[dpdk.git] / drivers / net / mlx5 / mlx5_flow_dv.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2018 Mellanox Technologies, Ltd
 */

#include <sys/queue.h>
#include <stdalign.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>

#include <rte_common.h>
#include <rte_ether.h>
#include <rte_ethdev_driver.h>
#include <rte_flow.h>
#include <rte_flow_driver.h>
#include <rte_malloc.h>
#include <rte_cycles.h>
#include <rte_ip.h>
#include <rte_gre.h>
#include <rte_vxlan.h>
#include <rte_gtp.h>
#include <rte_eal_paging.h>
#include <rte_mpls.h>

#include <mlx5_glue.h>
#include <mlx5_devx_cmds.h>
#include <mlx5_prm.h>
#include <mlx5_malloc.h>

#include "mlx5_defs.h"
#include "mlx5.h"
#include "mlx5_common_os.h"
#include "mlx5_flow.h"
#include "mlx5_flow_os.h"
#include "mlx5_rxtx.h"

#ifdef HAVE_IBV_FLOW_DV_SUPPORT

#ifndef HAVE_IBV_FLOW_DEVX_COUNTERS
#define MLX5DV_FLOW_ACTION_COUNTERS_DEVX 0
#endif

#ifndef HAVE_MLX5DV_DR_ESWITCH
#ifndef MLX5DV_FLOW_TABLE_TYPE_FDB
#define MLX5DV_FLOW_TABLE_TYPE_FDB 0
#endif
#endif

#ifndef HAVE_MLX5DV_DR
#define MLX5DV_DR_ACTION_FLAGS_ROOT_LEVEL 1
#endif

/* VLAN header definitions */
#define MLX5DV_FLOW_VLAN_PCP_SHIFT 13
#define MLX5DV_FLOW_VLAN_PCP_MASK (0x7 << MLX5DV_FLOW_VLAN_PCP_SHIFT)
#define MLX5DV_FLOW_VLAN_VID_MASK 0x0fff
#define MLX5DV_FLOW_VLAN_PCP_MASK_BE RTE_BE16(MLX5DV_FLOW_VLAN_PCP_MASK)
#define MLX5DV_FLOW_VLAN_VID_MASK_BE RTE_BE16(MLX5DV_FLOW_VLAN_VID_MASK)

union flow_dv_attr {
        struct {
                uint32_t valid:1;
                uint32_t ipv4:1;
                uint32_t ipv6:1;
                uint32_t tcp:1;
                uint32_t udp:1;
                uint32_t reserved:27;
        };
        uint32_t attr;
};

static int
flow_dv_tbl_resource_release(struct rte_eth_dev *dev,
                             struct mlx5_flow_tbl_resource *tbl);

static int
flow_dv_default_miss_resource_release(struct rte_eth_dev *dev);

static int
flow_dv_encap_decap_resource_release(struct rte_eth_dev *dev,
                                      uint32_t encap_decap_idx);

static int
flow_dv_port_id_action_resource_release(struct rte_eth_dev *dev,
                                        uint32_t port_id);

/**
 * Initialize flow attributes structure according to flow items' types.
 *
 * flow_dv_validate() avoids multiple L3/L4 layers cases other than tunnel
 * mode. For tunnel mode, the items to be modified are the outermost ones.
 *
 * @param[in] item
 *   Pointer to item specification.
 * @param[out] attr
 *   Pointer to flow attributes structure.
 * @param[in] dev_flow
 *   Pointer to the sub flow.
 * @param[in] tunnel_decap
 *   Whether action is after tunnel decapsulation.
 */
static void
flow_dv_attr_init(const struct rte_flow_item *item, union flow_dv_attr *attr,
                  struct mlx5_flow *dev_flow, bool tunnel_decap)
{
        uint64_t layers = dev_flow->handle->layers;

        /*
         * If layers is already initialized, it means this dev_flow is the
         * suffix flow, the layers flags is set by the prefix flow. Need to
         * use the layer flags from prefix flow as the suffix flow may not
         * have the user defined items as the flow is split.
         */
        if (layers) {
                if (layers & MLX5_FLOW_LAYER_OUTER_L3_IPV4)
                        attr->ipv4 = 1;
                else if (layers & MLX5_FLOW_LAYER_OUTER_L3_IPV6)
                        attr->ipv6 = 1;
                if (layers & MLX5_FLOW_LAYER_OUTER_L4_TCP)
                        attr->tcp = 1;
                else if (layers & MLX5_FLOW_LAYER_OUTER_L4_UDP)
                        attr->udp = 1;
                attr->valid = 1;
                return;
        }
        for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
                uint8_t next_protocol = 0xff;
                switch (item->type) {
                case RTE_FLOW_ITEM_TYPE_GRE:
                case RTE_FLOW_ITEM_TYPE_NVGRE:
                case RTE_FLOW_ITEM_TYPE_VXLAN:
                case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
                case RTE_FLOW_ITEM_TYPE_GENEVE:
                case RTE_FLOW_ITEM_TYPE_MPLS:
                        if (tunnel_decap)
                                attr->attr = 0;
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV4:
                        if (!attr->ipv6)
                                attr->ipv4 = 1;
                        if (item->mask != NULL &&
                            ((const struct rte_flow_item_ipv4 *)
                            item->mask)->hdr.next_proto_id)
                                next_protocol =
                                    ((const struct rte_flow_item_ipv4 *)
                                      (item->spec))->hdr.next_proto_id &
                                    ((const struct rte_flow_item_ipv4 *)
                                      (item->mask))->hdr.next_proto_id;
                        if ((next_protocol == IPPROTO_IPIP ||
                            next_protocol == IPPROTO_IPV6) && tunnel_decap)
                                attr->attr = 0;
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6:
                        if (!attr->ipv4)
                                attr->ipv6 = 1;
                        if (item->mask != NULL &&
                            ((const struct rte_flow_item_ipv6 *)
                            item->mask)->hdr.proto)
                                next_protocol =
                                    ((const struct rte_flow_item_ipv6 *)
                                      (item->spec))->hdr.proto &
                                    ((const struct rte_flow_item_ipv6 *)
                                      (item->mask))->hdr.proto;
                        if ((next_protocol == IPPROTO_IPIP ||
                            next_protocol == IPPROTO_IPV6) && tunnel_decap)
                                attr->attr = 0;
                        break;
                case RTE_FLOW_ITEM_TYPE_UDP:
                        if (!attr->tcp)
                                attr->udp = 1;
                        break;
                case RTE_FLOW_ITEM_TYPE_TCP:
                        if (!attr->udp)
                                attr->tcp = 1;
                        break;
                default:
                        break;
                }
        }
        attr->valid = 1;
}

/**
 * Convert rte_mtr_color to mlx5 color.
 *
 * @param[in] rcol
 *   rte_mtr_color.
 *
 * @return
 *   mlx5 color.
 */
static int
rte_col_2_mlx5_col(enum rte_color rcol)
{
        switch (rcol) {
        case RTE_COLOR_GREEN:
                return MLX5_FLOW_COLOR_GREEN;
        case RTE_COLOR_YELLOW:
                return MLX5_FLOW_COLOR_YELLOW;
        case RTE_COLOR_RED:
                return MLX5_FLOW_COLOR_RED;
        default:
                break;
        }
        return MLX5_FLOW_COLOR_UNDEFINED;
}

struct field_modify_info {
        uint32_t size; /* Size of field in protocol header, in bytes. */
        uint32_t offset; /* Offset of field in protocol header, in bytes. */
        enum mlx5_modification_field id;
};

struct field_modify_info modify_eth[] = {
        {4,  0, MLX5_MODI_OUT_DMAC_47_16},
        {2,  4, MLX5_MODI_OUT_DMAC_15_0},
        {4,  6, MLX5_MODI_OUT_SMAC_47_16},
        {2, 10, MLX5_MODI_OUT_SMAC_15_0},
        {0, 0, 0},
};

struct field_modify_info modify_vlan_out_first_vid[] = {
        /* Size in bits !!! */
        {12, 0, MLX5_MODI_OUT_FIRST_VID},
        {0, 0, 0},
};

struct field_modify_info modify_ipv4[] = {
        {1,  1, MLX5_MODI_OUT_IP_DSCP},
        {1,  8, MLX5_MODI_OUT_IPV4_TTL},
        {4, 12, MLX5_MODI_OUT_SIPV4},
        {4, 16, MLX5_MODI_OUT_DIPV4},
        {0, 0, 0},
};

struct field_modify_info modify_ipv6[] = {
        {1,  0, MLX5_MODI_OUT_IP_DSCP},
        {1,  7, MLX5_MODI_OUT_IPV6_HOPLIMIT},
        {4,  8, MLX5_MODI_OUT_SIPV6_127_96},
        {4, 12, MLX5_MODI_OUT_SIPV6_95_64},
        {4, 16, MLX5_MODI_OUT_SIPV6_63_32},
        {4, 20, MLX5_MODI_OUT_SIPV6_31_0},
        {4, 24, MLX5_MODI_OUT_DIPV6_127_96},
        {4, 28, MLX5_MODI_OUT_DIPV6_95_64},
        {4, 32, MLX5_MODI_OUT_DIPV6_63_32},
        {4, 36, MLX5_MODI_OUT_DIPV6_31_0},
        {0, 0, 0},
};

struct field_modify_info modify_udp[] = {
        {2, 0, MLX5_MODI_OUT_UDP_SPORT},
        {2, 2, MLX5_MODI_OUT_UDP_DPORT},
        {0, 0, 0},
};

struct field_modify_info modify_tcp[] = {
        {2, 0, MLX5_MODI_OUT_TCP_SPORT},
        {2, 2, MLX5_MODI_OUT_TCP_DPORT},
        {4, 4, MLX5_MODI_OUT_TCP_SEQ_NUM},
        {4, 8, MLX5_MODI_OUT_TCP_ACK_NUM},
        {0, 0, 0},
};

static void
mlx5_flow_tunnel_ip_check(const struct rte_flow_item *item __rte_unused,
                          uint8_t next_protocol, uint64_t *item_flags,
                          int *tunnel)
{
        MLX5_ASSERT(item->type == RTE_FLOW_ITEM_TYPE_IPV4 ||
                    item->type == RTE_FLOW_ITEM_TYPE_IPV6);
        if (next_protocol == IPPROTO_IPIP) {
                *item_flags |= MLX5_FLOW_LAYER_IPIP;
                *tunnel = 1;
        }
        if (next_protocol == IPPROTO_IPV6) {
                *item_flags |= MLX5_FLOW_LAYER_IPV6_ENCAP;
                *tunnel = 1;
        }
}

/**
 * Acquire the synchronizing object to protect multithreaded access
 * to shared dv context. Lock occurs only if context is actually
 * shared, i.e. we have multiport IB device and representors are
 * created.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 */
static void
flow_dv_shared_lock(struct rte_eth_dev *dev)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;

        if (sh->refcnt > 1) {
                int ret;

                ret = pthread_mutex_lock(&sh->dv_mutex);
                MLX5_ASSERT(!ret);
                (void)ret;
        }
}

static void
flow_dv_shared_unlock(struct rte_eth_dev *dev)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;

        if (sh->refcnt > 1) {
                int ret;

                ret = pthread_mutex_unlock(&sh->dv_mutex);
                MLX5_ASSERT(!ret);
                (void)ret;
        }
}

/* Update VLAN's VID/PCP based on input rte_flow_action.
 *
 * @param[in] action
 *   Pointer to struct rte_flow_action.
 * @param[out] vlan
 *   Pointer to struct rte_vlan_hdr.
 */
static void
mlx5_update_vlan_vid_pcp(const struct rte_flow_action *action,
                         struct rte_vlan_hdr *vlan)
{
        uint16_t vlan_tci;
        if (action->type == RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP) {
                vlan_tci =
                    ((const struct rte_flow_action_of_set_vlan_pcp *)
                                               action->conf)->vlan_pcp;
                vlan_tci = vlan_tci << MLX5DV_FLOW_VLAN_PCP_SHIFT;
                vlan->vlan_tci &= ~MLX5DV_FLOW_VLAN_PCP_MASK;
                vlan->vlan_tci |= vlan_tci;
        } else if (action->type == RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID) {
                vlan->vlan_tci &= ~MLX5DV_FLOW_VLAN_VID_MASK;
                vlan->vlan_tci |= rte_be_to_cpu_16
                    (((const struct rte_flow_action_of_set_vlan_vid *)
                                             action->conf)->vlan_vid);
        }
}

/**
 * Fetch 1, 2, 3 or 4 byte field from the byte array
 * and return as unsigned integer in host-endian format.
 *
 * @param[in] data
 *   Pointer to data array.
 * @param[in] size
 *   Size of field to extract.
 *
 * @return
 *   converted field in host endian format.
 */
static inline uint32_t
flow_dv_fetch_field(const uint8_t *data, uint32_t size)
{
        uint32_t ret;

        switch (size) {
        case 1:
                ret = *data;
                break;
        case 2:
                ret = rte_be_to_cpu_16(*(const unaligned_uint16_t *)data);
                break;
        case 3:
                ret = rte_be_to_cpu_16(*(const unaligned_uint16_t *)data);
                ret = (ret << 8) | *(data + sizeof(uint16_t));
                break;
        case 4:
                ret = rte_be_to_cpu_32(*(const unaligned_uint32_t *)data);
                break;
        default:
                MLX5_ASSERT(false);
                ret = 0;
                break;
        }
        return ret;
}

/**
 * Convert modify-header action to DV specification.
 *
 * Data length of each action is determined by provided field description
 * and the item mask. Data bit offset and width of each action is determined
 * by provided item mask.
 *
 * @param[in] item
 *   Pointer to item specification.
 * @param[in] field
 *   Pointer to field modification information.
 *     For MLX5_MODIFICATION_TYPE_SET specifies destination field.
 *     For MLX5_MODIFICATION_TYPE_ADD specifies destination field.
 *     For MLX5_MODIFICATION_TYPE_COPY specifies source field.
 * @param[in] dcopy
 *   Destination field info for MLX5_MODIFICATION_TYPE_COPY in @type.
 *   Negative offset value sets the same offset as source offset.
 *   size field is ignored, value is taken from source field.
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] type
 *   Type of modification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_modify_action(struct rte_flow_item *item,
                              struct field_modify_info *field,
                              struct field_modify_info *dcopy,
                              struct mlx5_flow_dv_modify_hdr_resource *resource,
                              uint32_t type, struct rte_flow_error *error)
{
        uint32_t i = resource->actions_num;
        struct mlx5_modification_cmd *actions = resource->actions;

        /*
         * The item and mask are provided in big-endian format.
         * The fields should be presented as in big-endian format either.
         * Mask must be always present, it defines the actual field width.
         */
        MLX5_ASSERT(item->mask);
        MLX5_ASSERT(field->size);
        do {
                unsigned int size_b;
                unsigned int off_b;
                uint32_t mask;
                uint32_t data;

                if (i >= MLX5_MAX_MODIFY_NUM)
                        return rte_flow_error_set(error, EINVAL,
                                 RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                 "too many items to modify");
                /* Fetch variable byte size mask from the array. */
                mask = flow_dv_fetch_field((const uint8_t *)item->mask +
                                           field->offset, field->size);
                if (!mask) {
                        ++field;
                        continue;
                }
                /* Deduce actual data width in bits from mask value. */
                off_b = rte_bsf32(mask);
                size_b = sizeof(uint32_t) * CHAR_BIT -
                         off_b - __builtin_clz(mask);
                MLX5_ASSERT(size_b);
                size_b = size_b == sizeof(uint32_t) * CHAR_BIT ? 0 : size_b;
                actions[i] = (struct mlx5_modification_cmd) {
                        .action_type = type,
                        .field = field->id,
                        .offset = off_b,
                        .length = size_b,
                };
                /* Convert entire record to expected big-endian format. */
                actions[i].data0 = rte_cpu_to_be_32(actions[i].data0);
                if (type == MLX5_MODIFICATION_TYPE_COPY) {
                        MLX5_ASSERT(dcopy);
                        actions[i].dst_field = dcopy->id;
                        actions[i].dst_offset =
                                (int)dcopy->offset < 0 ? off_b : dcopy->offset;
                        /* Convert entire record to big-endian format. */
                        actions[i].data1 = rte_cpu_to_be_32(actions[i].data1);
                } else {
                        MLX5_ASSERT(item->spec);
                        data = flow_dv_fetch_field((const uint8_t *)item->spec +
                                                   field->offset, field->size);
                        /* Shift out the trailing masked bits from data. */
                        data = (data & mask) >> off_b;
                        actions[i].data1 = rte_cpu_to_be_32(data);
                }
                ++i;
                ++field;
        } while (field->size);
        if (resource->actions_num == i)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "invalid modification flow item");
        resource->actions_num = i;
        return 0;
}

/**
 * Convert modify-header set IPv4 address action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_ipv4
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_set_ipv4 *conf =
                (const struct rte_flow_action_set_ipv4 *)(action->conf);
        struct rte_flow_item item = { .type = RTE_FLOW_ITEM_TYPE_IPV4 };
        struct rte_flow_item_ipv4 ipv4;
        struct rte_flow_item_ipv4 ipv4_mask;

        memset(&ipv4, 0, sizeof(ipv4));
        memset(&ipv4_mask, 0, sizeof(ipv4_mask));
        if (action->type == RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC) {
                ipv4.hdr.src_addr = conf->ipv4_addr;
                ipv4_mask.hdr.src_addr = rte_flow_item_ipv4_mask.hdr.src_addr;
        } else {
                ipv4.hdr.dst_addr = conf->ipv4_addr;
                ipv4_mask.hdr.dst_addr = rte_flow_item_ipv4_mask.hdr.dst_addr;
        }
        item.spec = &ipv4;
        item.mask = &ipv4_mask;
        return flow_dv_convert_modify_action(&item, modify_ipv4, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set IPv6 address action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_ipv6
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_set_ipv6 *conf =
                (const struct rte_flow_action_set_ipv6 *)(action->conf);
        struct rte_flow_item item = { .type = RTE_FLOW_ITEM_TYPE_IPV6 };
        struct rte_flow_item_ipv6 ipv6;
        struct rte_flow_item_ipv6 ipv6_mask;

        memset(&ipv6, 0, sizeof(ipv6));
        memset(&ipv6_mask, 0, sizeof(ipv6_mask));
        if (action->type == RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC) {
                memcpy(&ipv6.hdr.src_addr, &conf->ipv6_addr,
                       sizeof(ipv6.hdr.src_addr));
                memcpy(&ipv6_mask.hdr.src_addr,
                       &rte_flow_item_ipv6_mask.hdr.src_addr,
                       sizeof(ipv6.hdr.src_addr));
        } else {
                memcpy(&ipv6.hdr.dst_addr, &conf->ipv6_addr,
                       sizeof(ipv6.hdr.dst_addr));
                memcpy(&ipv6_mask.hdr.dst_addr,
                       &rte_flow_item_ipv6_mask.hdr.dst_addr,
                       sizeof(ipv6.hdr.dst_addr));
        }
        item.spec = &ipv6;
        item.mask = &ipv6_mask;
        return flow_dv_convert_modify_action(&item, modify_ipv6, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set MAC address action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_mac
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_set_mac *conf =
                (const struct rte_flow_action_set_mac *)(action->conf);
        struct rte_flow_item item = { .type = RTE_FLOW_ITEM_TYPE_ETH };
        struct rte_flow_item_eth eth;
        struct rte_flow_item_eth eth_mask;

        memset(&eth, 0, sizeof(eth));
        memset(&eth_mask, 0, sizeof(eth_mask));
        if (action->type == RTE_FLOW_ACTION_TYPE_SET_MAC_SRC) {
                memcpy(&eth.src.addr_bytes, &conf->mac_addr,
                       sizeof(eth.src.addr_bytes));
                memcpy(&eth_mask.src.addr_bytes,
                       &rte_flow_item_eth_mask.src.addr_bytes,
                       sizeof(eth_mask.src.addr_bytes));
        } else {
                memcpy(&eth.dst.addr_bytes, &conf->mac_addr,
                       sizeof(eth.dst.addr_bytes));
                memcpy(&eth_mask.dst.addr_bytes,
                       &rte_flow_item_eth_mask.dst.addr_bytes,
                       sizeof(eth_mask.dst.addr_bytes));
        }
        item.spec = &eth;
        item.mask = &eth_mask;
        return flow_dv_convert_modify_action(&item, modify_eth, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set VLAN VID action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_vlan_vid
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_of_set_vlan_vid *conf =
                (const struct rte_flow_action_of_set_vlan_vid *)(action->conf);
        int i = resource->actions_num;
        struct mlx5_modification_cmd *actions = resource->actions;
        struct field_modify_info *field = modify_vlan_out_first_vid;

        if (i >= MLX5_MAX_MODIFY_NUM)
                return rte_flow_error_set(error, EINVAL,
                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                         "too many items to modify");
        actions[i] = (struct mlx5_modification_cmd) {
                .action_type = MLX5_MODIFICATION_TYPE_SET,
                .field = field->id,
                .length = field->size,
                .offset = field->offset,
        };
        actions[i].data0 = rte_cpu_to_be_32(actions[i].data0);
        actions[i].data1 = conf->vlan_vid;
        actions[i].data1 = actions[i].data1 << 16;
        resource->actions_num = ++i;
        return 0;
}

/**
 * Convert modify-header set TP action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[in] items
 *   Pointer to rte_flow_item objects list.
 * @param[in] attr
 *   Pointer to flow attributes structure.
 * @param[in] dev_flow
 *   Pointer to the sub flow.
 * @param[in] tunnel_decap
 *   Whether action is after tunnel decapsulation.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_tp
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         const struct rte_flow_item *items,
                         union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
                         bool tunnel_decap, struct rte_flow_error *error)
{
        const struct rte_flow_action_set_tp *conf =
                (const struct rte_flow_action_set_tp *)(action->conf);
        struct rte_flow_item item;
        struct rte_flow_item_udp udp;
        struct rte_flow_item_udp udp_mask;
        struct rte_flow_item_tcp tcp;
        struct rte_flow_item_tcp tcp_mask;
        struct field_modify_info *field;

        if (!attr->valid)
                flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->udp) {
                memset(&udp, 0, sizeof(udp));
                memset(&udp_mask, 0, sizeof(udp_mask));
                if (action->type == RTE_FLOW_ACTION_TYPE_SET_TP_SRC) {
                        udp.hdr.src_port = conf->port;
                        udp_mask.hdr.src_port =
                                        rte_flow_item_udp_mask.hdr.src_port;
                } else {
                        udp.hdr.dst_port = conf->port;
                        udp_mask.hdr.dst_port =
                                        rte_flow_item_udp_mask.hdr.dst_port;
                }
                item.type = RTE_FLOW_ITEM_TYPE_UDP;
                item.spec = &udp;
                item.mask = &udp_mask;
                field = modify_udp;
        } else {
                MLX5_ASSERT(attr->tcp);
                memset(&tcp, 0, sizeof(tcp));
                memset(&tcp_mask, 0, sizeof(tcp_mask));
                if (action->type == RTE_FLOW_ACTION_TYPE_SET_TP_SRC) {
                        tcp.hdr.src_port = conf->port;
                        tcp_mask.hdr.src_port =
                                        rte_flow_item_tcp_mask.hdr.src_port;
                } else {
                        tcp.hdr.dst_port = conf->port;
                        tcp_mask.hdr.dst_port =
                                        rte_flow_item_tcp_mask.hdr.dst_port;
                }
                item.type = RTE_FLOW_ITEM_TYPE_TCP;
                item.spec = &tcp;
                item.mask = &tcp_mask;
                field = modify_tcp;
        }
        return flow_dv_convert_modify_action(&item, field, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set TTL action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[in] items
 *   Pointer to rte_flow_item objects list.
 * @param[in] attr
 *   Pointer to flow attributes structure.
 * @param[in] dev_flow
 *   Pointer to the sub flow.
 * @param[in] tunnel_decap
 *   Whether action is after tunnel decapsulation.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_ttl
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         const struct rte_flow_item *items,
                         union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
                         bool tunnel_decap, struct rte_flow_error *error)
{
        const struct rte_flow_action_set_ttl *conf =
                (const struct rte_flow_action_set_ttl *)(action->conf);
        struct rte_flow_item item;
        struct rte_flow_item_ipv4 ipv4;
        struct rte_flow_item_ipv4 ipv4_mask;
        struct rte_flow_item_ipv6 ipv6;
        struct rte_flow_item_ipv6 ipv6_mask;
        struct field_modify_info *field;

        if (!attr->valid)
                flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->ipv4) {
                memset(&ipv4, 0, sizeof(ipv4));
                memset(&ipv4_mask, 0, sizeof(ipv4_mask));
                ipv4.hdr.time_to_live = conf->ttl_value;
                ipv4_mask.hdr.time_to_live = 0xFF;
                item.type = RTE_FLOW_ITEM_TYPE_IPV4;
                item.spec = &ipv4;
                item.mask = &ipv4_mask;
                field = modify_ipv4;
        } else {
                MLX5_ASSERT(attr->ipv6);
                memset(&ipv6, 0, sizeof(ipv6));
                memset(&ipv6_mask, 0, sizeof(ipv6_mask));
                ipv6.hdr.hop_limits = conf->ttl_value;
                ipv6_mask.hdr.hop_limits = 0xFF;
                item.type = RTE_FLOW_ITEM_TYPE_IPV6;
                item.spec = &ipv6;
                item.mask = &ipv6_mask;
                field = modify_ipv6;
        }
        return flow_dv_convert_modify_action(&item, field, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header decrement TTL action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[in] items
 *   Pointer to rte_flow_item objects list.
 * @param[in] attr
 *   Pointer to flow attributes structure.
 * @param[in] dev_flow
 *   Pointer to the sub flow.
 * @param[in] tunnel_decap
 *   Whether action is after tunnel decapsulation.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_dec_ttl
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_item *items,
                         union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
                         bool tunnel_decap, struct rte_flow_error *error)
{
        struct rte_flow_item item;
        struct rte_flow_item_ipv4 ipv4;
        struct rte_flow_item_ipv4 ipv4_mask;
        struct rte_flow_item_ipv6 ipv6;
        struct rte_flow_item_ipv6 ipv6_mask;
        struct field_modify_info *field;

        if (!attr->valid)
                flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->ipv4) {
                memset(&ipv4, 0, sizeof(ipv4));
                memset(&ipv4_mask, 0, sizeof(ipv4_mask));
                ipv4.hdr.time_to_live = 0xFF;
                ipv4_mask.hdr.time_to_live = 0xFF;
                item.type = RTE_FLOW_ITEM_TYPE_IPV4;
                item.spec = &ipv4;
                item.mask = &ipv4_mask;
                field = modify_ipv4;
        } else {
                MLX5_ASSERT(attr->ipv6);
                memset(&ipv6, 0, sizeof(ipv6));
                memset(&ipv6_mask, 0, sizeof(ipv6_mask));
                ipv6.hdr.hop_limits = 0xFF;
                ipv6_mask.hdr.hop_limits = 0xFF;
                item.type = RTE_FLOW_ITEM_TYPE_IPV6;
                item.spec = &ipv6;
                item.mask = &ipv6_mask;
                field = modify_ipv6;
        }
        return flow_dv_convert_modify_action(&item, field, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_ADD, error);
}

/**
 * Convert modify-header increment/decrement TCP Sequence number
 * to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_tcp_seq
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const rte_be32_t *conf = (const rte_be32_t *)(action->conf);
        uint64_t value = rte_be_to_cpu_32(*conf);
        struct rte_flow_item item;
        struct rte_flow_item_tcp tcp;
        struct rte_flow_item_tcp tcp_mask;

        memset(&tcp, 0, sizeof(tcp));
        memset(&tcp_mask, 0, sizeof(tcp_mask));
        if (action->type == RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ)
                /*
                 * The HW has no decrement operation, only increment operation.
                 * To simulate decrement X from Y using increment operation
                 * we need to add UINT32_MAX X times to Y.
                 * Each adding of UINT32_MAX decrements Y by 1.
                 */
                value *= UINT32_MAX;
        tcp.hdr.sent_seq = rte_cpu_to_be_32((uint32_t)value);
        tcp_mask.hdr.sent_seq = RTE_BE32(UINT32_MAX);
        item.type = RTE_FLOW_ITEM_TYPE_TCP;
        item.spec = &tcp;
        item.mask = &tcp_mask;
        return flow_dv_convert_modify_action(&item, modify_tcp, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_ADD, error);
}

/**
 * Convert modify-header increment/decrement TCP Acknowledgment number
 * to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_tcp_ack
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const rte_be32_t *conf = (const rte_be32_t *)(action->conf);
        uint64_t value = rte_be_to_cpu_32(*conf);
        struct rte_flow_item item;
        struct rte_flow_item_tcp tcp;
        struct rte_flow_item_tcp tcp_mask;

        memset(&tcp, 0, sizeof(tcp));
        memset(&tcp_mask, 0, sizeof(tcp_mask));
        if (action->type == RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK)
                /*
                 * The HW has no decrement operation, only increment operation.
                 * To simulate decrement X from Y using increment operation
                 * we need to add UINT32_MAX X times to Y.
                 * Each adding of UINT32_MAX decrements Y by 1.
                 */
                value *= UINT32_MAX;
        tcp.hdr.recv_ack = rte_cpu_to_be_32((uint32_t)value);
        tcp_mask.hdr.recv_ack = RTE_BE32(UINT32_MAX);
        item.type = RTE_FLOW_ITEM_TYPE_TCP;
        item.spec = &tcp;
        item.mask = &tcp_mask;
        return flow_dv_convert_modify_action(&item, modify_tcp, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_ADD, error);
}

static enum mlx5_modification_field reg_to_field[] = {
        [REG_NON] = MLX5_MODI_OUT_NONE,
        [REG_A] = MLX5_MODI_META_DATA_REG_A,
        [REG_B] = MLX5_MODI_META_DATA_REG_B,
        [REG_C_0] = MLX5_MODI_META_REG_C_0,
        [REG_C_1] = MLX5_MODI_META_REG_C_1,
        [REG_C_2] = MLX5_MODI_META_REG_C_2,
        [REG_C_3] = MLX5_MODI_META_REG_C_3,
        [REG_C_4] = MLX5_MODI_META_REG_C_4,
        [REG_C_5] = MLX5_MODI_META_REG_C_5,
        [REG_C_6] = MLX5_MODI_META_REG_C_6,
        [REG_C_7] = MLX5_MODI_META_REG_C_7,
};

/**
 * Convert register set to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_set_reg
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct mlx5_rte_flow_action_set_tag *conf = action->conf;
        struct mlx5_modification_cmd *actions = resource->actions;
        uint32_t i = resource->actions_num;

        if (i >= MLX5_MAX_MODIFY_NUM)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "too many items to modify");
        MLX5_ASSERT(conf->id != REG_NON);
        MLX5_ASSERT(conf->id < RTE_DIM(reg_to_field));
        actions[i] = (struct mlx5_modification_cmd) {
                .action_type = MLX5_MODIFICATION_TYPE_SET,
                .field = reg_to_field[conf->id],
        };
        actions[i].data0 = rte_cpu_to_be_32(actions[i].data0);
        actions[i].data1 = rte_cpu_to_be_32(conf->data);
        ++i;
        resource->actions_num = i;
        return 0;
}

/**
 * Convert SET_TAG action to DV specification.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] conf
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_set_tag
                        (struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action_set_tag *conf,
                         struct rte_flow_error *error)
{
        rte_be32_t data = rte_cpu_to_be_32(conf->data);
        rte_be32_t mask = rte_cpu_to_be_32(conf->mask);
        struct rte_flow_item item = {
                .spec = &data,
                .mask = &mask,
        };
        struct field_modify_info reg_c_x[] = {
                [1] = {0, 0, 0},
        };
        enum mlx5_modification_field reg_type;
        int ret;

        ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, conf->index, error);
        if (ret < 0)
                return ret;
        MLX5_ASSERT(ret != REG_NON);
        MLX5_ASSERT((unsigned int)ret < RTE_DIM(reg_to_field));
        reg_type = reg_to_field[ret];
        MLX5_ASSERT(reg_type > 0);
        reg_c_x[0] = (struct field_modify_info){4, 0, reg_type};
        return flow_dv_convert_modify_action(&item, reg_c_x, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert internal COPY_REG action to DV specification.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in,out] res
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_copy_mreg(struct rte_eth_dev *dev,
                                 struct mlx5_flow_dv_modify_hdr_resource *res,
                                 const struct rte_flow_action *action,
                                 struct rte_flow_error *error)
{
        const struct mlx5_flow_action_copy_mreg *conf = action->conf;
        rte_be32_t mask = RTE_BE32(UINT32_MAX);
        struct rte_flow_item item = {
                .spec = NULL,
                .mask = &mask,
        };
        struct field_modify_info reg_src[] = {
                {4, 0, reg_to_field[conf->src]},
                {0, 0, 0},
        };
        struct field_modify_info reg_dst = {
                .offset = 0,
                .id = reg_to_field[conf->dst],
        };
        /* Adjust reg_c[0] usage according to reported mask. */
        if (conf->dst == REG_C_0 || conf->src == REG_C_0) {
                struct mlx5_priv *priv = dev->data->dev_private;
                uint32_t reg_c0 = priv->sh->dv_regc0_mask;

                MLX5_ASSERT(reg_c0);
                MLX5_ASSERT(priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY);
                if (conf->dst == REG_C_0) {
                        /* Copy to reg_c[0], within mask only. */
                        reg_dst.offset = rte_bsf32(reg_c0);
                        /*
                         * Mask is ignoring the enianness, because
                         * there is no conversion in datapath.
                         */
#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
                        /* Copy from destination lower bits to reg_c[0]. */
                        mask = reg_c0 >> reg_dst.offset;
#else
                        /* Copy from destination upper bits to reg_c[0]. */
                        mask = reg_c0 << (sizeof(reg_c0) * CHAR_BIT -
                                          rte_fls_u32(reg_c0));
#endif
                } else {
                        mask = rte_cpu_to_be_32(reg_c0);
#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
                        /* Copy from reg_c[0] to destination lower bits. */
                        reg_dst.offset = 0;
#else
                        /* Copy from reg_c[0] to destination upper bits. */
                        reg_dst.offset = sizeof(reg_c0) * CHAR_BIT -
                                         (rte_fls_u32(reg_c0) -
                                          rte_bsf32(reg_c0));
#endif
                }
        }
        return flow_dv_convert_modify_action(&item,
                                             reg_src, &reg_dst, res,
                                             MLX5_MODIFICATION_TYPE_COPY,
                                             error);
}

/**
 * Convert MARK action to DV specification. This routine is used
 * in extensive metadata only and requires metadata register to be
 * handled. In legacy mode hardware tag resource is engaged.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] conf
 *   Pointer to MARK action specification.
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_mark(struct rte_eth_dev *dev,
                            const struct rte_flow_action_mark *conf,
                            struct mlx5_flow_dv_modify_hdr_resource *resource,
                            struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        rte_be32_t mask = rte_cpu_to_be_32(MLX5_FLOW_MARK_MASK &
                                           priv->sh->dv_mark_mask);
        rte_be32_t data = rte_cpu_to_be_32(conf->id) & mask;
        struct rte_flow_item item = {
                .spec = &data,
                .mask = &mask,
        };
        struct field_modify_info reg_c_x[] = {
                [1] = {0, 0, 0},
        };
        int reg;

        if (!mask)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          NULL, "zero mark action mask");
        reg = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
        if (reg < 0)
                return reg;
        MLX5_ASSERT(reg > 0);
        if (reg == REG_C_0) {
                uint32_t msk_c0 = priv->sh->dv_regc0_mask;
                uint32_t shl_c0 = rte_bsf32(msk_c0);

                data = rte_cpu_to_be_32(rte_cpu_to_be_32(data) << shl_c0);
                mask = rte_cpu_to_be_32(mask) & msk_c0;
                mask = rte_cpu_to_be_32(mask << shl_c0);
        }
        reg_c_x[0] = (struct field_modify_info){4, 0, reg_to_field[reg]};
        return flow_dv_convert_modify_action(&item, reg_c_x, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Get metadata register index for specified steering domain.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] attr
 *   Attributes of flow to determine steering domain.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   positive index on success, a negative errno value otherwise
 *   and rte_errno is set.
 */
static enum modify_reg
flow_dv_get_metadata_reg(struct rte_eth_dev *dev,
                         const struct rte_flow_attr *attr,
                         struct rte_flow_error *error)
{
        int reg =
                mlx5_flow_get_reg_id(dev, attr->transfer ?
                                          MLX5_METADATA_FDB :
                                            attr->egress ?
                                            MLX5_METADATA_TX :
                                            MLX5_METADATA_RX, 0, error);
        if (reg < 0)
                return rte_flow_error_set(error,
                                          ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
                                          NULL, "unavailable "
                                          "metadata register");
        return reg;
}

/**
 * Convert SET_META action to DV specification.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[in] conf
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_set_meta
                        (struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_attr *attr,
                         const struct rte_flow_action_set_meta *conf,
                         struct rte_flow_error *error)
{
        uint32_t data = conf->data;
        uint32_t mask = conf->mask;
        struct rte_flow_item item = {
                .spec = &data,
                .mask = &mask,
        };
        struct field_modify_info reg_c_x[] = {
                [1] = {0, 0, 0},
        };
        int reg = flow_dv_get_metadata_reg(dev, attr, error);

        if (reg < 0)
                return reg;
        /*
         * In datapath code there is no endianness
         * coversions for perfromance reasons, all
         * pattern conversions are done in rte_flow.
         */
        if (reg == REG_C_0) {
                struct mlx5_priv *priv = dev->data->dev_private;
                uint32_t msk_c0 = priv->sh->dv_regc0_mask;
                uint32_t shl_c0;

                MLX5_ASSERT(msk_c0);
#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
                shl_c0 = rte_bsf32(msk_c0);
#else
                shl_c0 = sizeof(msk_c0) * CHAR_BIT - rte_fls_u32(msk_c0);
#endif
                mask <<= shl_c0;
                data <<= shl_c0;
                MLX5_ASSERT(!(~msk_c0 & rte_cpu_to_be_32(mask)));
        }
        reg_c_x[0] = (struct field_modify_info){4, 0, reg_to_field[reg]};
        /* The routine expects parameters in memory as big-endian ones. */
        return flow_dv_convert_modify_action(&item, reg_c_x, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set IPv4 DSCP action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_ipv4_dscp
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_set_dscp *conf =
                (const struct rte_flow_action_set_dscp *)(action->conf);
        struct rte_flow_item item = { .type = RTE_FLOW_ITEM_TYPE_IPV4 };
        struct rte_flow_item_ipv4 ipv4;
        struct rte_flow_item_ipv4 ipv4_mask;

        memset(&ipv4, 0, sizeof(ipv4));
        memset(&ipv4_mask, 0, sizeof(ipv4_mask));
        ipv4.hdr.type_of_service = conf->dscp;
        ipv4_mask.hdr.type_of_service = RTE_IPV4_HDR_DSCP_MASK >> 2;
        item.spec = &ipv4;
        item.mask = &ipv4_mask;
        return flow_dv_convert_modify_action(&item, modify_ipv4, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Convert modify-header set IPv6 DSCP action to DV specification.
 *
 * @param[in,out] resource
 *   Pointer to the modify-header resource.
 * @param[in] action
 *   Pointer to action specification.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_action_modify_ipv6_dscp
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         struct rte_flow_error *error)
{
        const struct rte_flow_action_set_dscp *conf =
                (const struct rte_flow_action_set_dscp *)(action->conf);
        struct rte_flow_item item = { .type = RTE_FLOW_ITEM_TYPE_IPV6 };
        struct rte_flow_item_ipv6 ipv6;
        struct rte_flow_item_ipv6 ipv6_mask;

        memset(&ipv6, 0, sizeof(ipv6));
        memset(&ipv6_mask, 0, sizeof(ipv6_mask));
        /*
         * Even though the DSCP bits offset of IPv6 is not byte aligned,
         * rdma-core only accept the DSCP bits byte aligned start from
         * bit 0 to 5 as to be compatible with IPv4. No need to shift the
         * bits in IPv6 case as rdma-core requires byte aligned value.
         */
        ipv6.hdr.vtc_flow = conf->dscp;
        ipv6_mask.hdr.vtc_flow = RTE_IPV6_HDR_DSCP_MASK >> 22;
        item.spec = &ipv6;
        item.mask = &ipv6_mask;
        return flow_dv_convert_modify_action(&item, modify_ipv6, NULL, resource,
                                             MLX5_MODIFICATION_TYPE_SET, error);
}

/**
 * Validate MARK item.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] item
 *   Item specification.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_mark(struct rte_eth_dev *dev,
                           const struct rte_flow_item *item,
                           const struct rte_flow_attr *attr __rte_unused,
                           struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *config = &priv->config;
        const struct rte_flow_item_mark *spec = item->spec;
        const struct rte_flow_item_mark *mask = item->mask;
        const struct rte_flow_item_mark nic_mask = {
                .id = priv->sh->dv_mark_mask,
        };
        int ret;

        if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "extended metadata feature"
                                          " isn't enabled");
        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "extended metadata register"
                                          " isn't supported");
        if (!nic_mask.id)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "extended metadata register"
                                          " isn't available");
        ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
        if (ret < 0)
                return ret;
        if (!spec)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
                                          item->spec,
                                          "data cannot be empty");
        if (spec->id >= (MLX5_FLOW_MARK_MAX & nic_mask.id))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          &spec->id,
                                          "mark id exceeds the limit");
        if (!mask)
                mask = &nic_mask;
        if (!mask->id)
                return rte_flow_error_set(error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ITEM_SPEC, NULL,
                                        "mask cannot be zero");

        ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
                                        (const uint8_t *)&nic_mask,
                                        sizeof(struct rte_flow_item_mark),
                                        MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
        if (ret < 0)
                return ret;
        return 0;
}

/**
 * Validate META item.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] item
 *   Item specification.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_meta(struct rte_eth_dev *dev __rte_unused,
                           const struct rte_flow_item *item,
                           const struct rte_flow_attr *attr,
                           struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *config = &priv->config;
        const struct rte_flow_item_meta *spec = item->spec;
        const struct rte_flow_item_meta *mask = item->mask;
        struct rte_flow_item_meta nic_mask = {
                .data = UINT32_MAX
        };
        int reg;
        int ret;

        if (!spec)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
                                          item->spec,
                                          "data cannot be empty");
        if (config->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
                if (!mlx5_flow_ext_mreg_supported(dev))
                        return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "extended metadata register"
                                          " isn't supported");
                reg = flow_dv_get_metadata_reg(dev, attr, error);
                if (reg < 0)
                        return reg;
                if (reg == REG_B)
                        return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "match on reg_b "
                                          "isn't supported");
                if (reg != REG_A)
                        nic_mask.data = priv->sh->dv_meta_mask;
        } else if (attr->transfer) {
                return rte_flow_error_set(error, ENOTSUP,
                                        RTE_FLOW_ERROR_TYPE_ITEM, item,
                                        "extended metadata feature "
                                        "should be enabled when "
                                        "meta item is requested "
                                        "with e-switch mode ");
        }
        if (!mask)
                mask = &rte_flow_item_meta_mask;
        if (!mask->data)
                return rte_flow_error_set(error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ITEM_SPEC, NULL,
                                        "mask cannot be zero");

        ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
                                        (const uint8_t *)&nic_mask,
                                        sizeof(struct rte_flow_item_meta),
                                        MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
        return ret;
}

/**
 * Validate TAG item.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] item
 *   Item specification.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_tag(struct rte_eth_dev *dev,
                          const struct rte_flow_item *item,
                          const struct rte_flow_attr *attr __rte_unused,
                          struct rte_flow_error *error)
{
        const struct rte_flow_item_tag *spec = item->spec;
        const struct rte_flow_item_tag *mask = item->mask;
        const struct rte_flow_item_tag nic_mask = {
                .data = RTE_BE32(UINT32_MAX),
                .index = 0xff,
        };
        int ret;

        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "extensive metadata register"
                                          " isn't supported");
        if (!spec)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
                                          item->spec,
                                          "data cannot be empty");
        if (!mask)
                mask = &rte_flow_item_tag_mask;
        if (!mask->data)
                return rte_flow_error_set(error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ITEM_SPEC, NULL,
                                        "mask cannot be zero");

        ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
                                        (const uint8_t *)&nic_mask,
                                        sizeof(struct rte_flow_item_tag),
                                        MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
        if (ret < 0)
                return ret;
        if (mask->index != 0xff)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC, NULL,
                                          "partial mask for tag index"
                                          " is not supported");
        ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, spec->index, error);
        if (ret < 0)
                return ret;
        MLX5_ASSERT(ret != REG_NON);
        return 0;
}

/**
 * Validate vport item.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] item
 *   Item specification.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_port_id(struct rte_eth_dev *dev,
                              const struct rte_flow_item *item,
                              const struct rte_flow_attr *attr,
                              uint64_t item_flags,
                              struct rte_flow_error *error)
{
        const struct rte_flow_item_port_id *spec = item->spec;
        const struct rte_flow_item_port_id *mask = item->mask;
        const struct rte_flow_item_port_id switch_mask = {
                        .id = 0xffffffff,
        };
        struct mlx5_priv *esw_priv;
        struct mlx5_priv *dev_priv;
        int ret;

        if (!attr->transfer)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM,
                                          NULL,
                                          "match on port id is valid only"
                                          " when transfer flag is enabled");
        if (item_flags & MLX5_FLOW_ITEM_PORT_ID)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "multiple source ports are not"
                                          " supported");
        if (!mask)
                mask = &switch_mask;
        if (mask->id != 0xffffffff)
                return rte_flow_error_set(error, ENOTSUP,
                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK,
                                           mask,
                                           "no support for partial mask on"
                                           " \"id\" field");
        ret = mlx5_flow_item_acceptable
                                (item, (const uint8_t *)mask,
                                 (const uint8_t *)&rte_flow_item_port_id_mask,
                                 sizeof(struct rte_flow_item_port_id),
                                 MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
        if (ret)
                return ret;
        if (!spec)
                return 0;
        esw_priv = mlx5_port_to_eswitch_info(spec->id, false);
        if (!esw_priv)
                return rte_flow_error_set(error, rte_errno,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC, spec,
                                          "failed to obtain E-Switch info for"
                                          " port");
        dev_priv = mlx5_dev_to_eswitch_info(dev);
        if (!dev_priv)
                return rte_flow_error_set(error, rte_errno,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "failed to obtain E-Switch info");
        if (esw_priv->domain_id != dev_priv->domain_id)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC, spec,
                                          "cannot match on a port from a"
                                          " different E-Switch");
        return 0;
}

/**
 * Validate VLAN item.
 *
 * @param[in] item
 *   Item specification.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[in] dev
 *   Ethernet device flow is being created on.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_vlan(const struct rte_flow_item *item,
                           uint64_t item_flags,
                           struct rte_eth_dev *dev,
                           struct rte_flow_error *error)
{
        const struct rte_flow_item_vlan *mask = item->mask;
        const struct rte_flow_item_vlan nic_mask = {
                .tci = RTE_BE16(UINT16_MAX),
                .inner_type = RTE_BE16(UINT16_MAX),
        };
        const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
        int ret;
        const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
                                        MLX5_FLOW_LAYER_INNER_L4) :
                                       (MLX5_FLOW_LAYER_OUTER_L3 |
                                        MLX5_FLOW_LAYER_OUTER_L4);
        const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
                                        MLX5_FLOW_LAYER_OUTER_VLAN;

        if (item_flags & vlanm)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "multiple VLAN layers not supported");
        else if ((item_flags & l34m) != 0)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "VLAN cannot follow L3/L4 layer");
        if (!mask)
                mask = &rte_flow_item_vlan_mask;
        ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
                                        (const uint8_t *)&nic_mask,
                                        sizeof(struct rte_flow_item_vlan),
                                        MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
        if (ret)
                return ret;
        if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
                struct mlx5_priv *priv = dev->data->dev_private;

                if (priv->vmwa_context) {
                        /*
                         * Non-NULL context means we have a virtual machine
                         * and SR-IOV enabled, we have to create VLAN interface
                         * to make hypervisor to setup E-Switch vport
                         * context correctly. We avoid creating the multiple
                         * VLAN interfaces, so we cannot support VLAN tag mask.
                         */
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  item,
                                                  "VLAN tag mask is not"
                                                  " supported in virtual"
                                                  " environment");
                }
        }
        return 0;
}

/*
 * GTP flags are contained in 1 byte of the format:
 * -------------------------------------------
 * | bit   | 0 - 2   | 3  | 4   | 5 | 6 | 7  |
 * |-----------------------------------------|
 * | value | Version | PT | Res | E | S | PN |
 * -------------------------------------------
 *
 * Matching is supported only for GTP flags E, S, PN.
 */
#define MLX5_GTP_FLAGS_MASK     0x07

/**
 * Validate GTP item.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] item
 *   Item specification.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_gtp(struct rte_eth_dev *dev,
                          const struct rte_flow_item *item,
                          uint64_t item_flags,
                          struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_item_gtp *spec = item->spec;
        const struct rte_flow_item_gtp *mask = item->mask;
        const struct rte_flow_item_gtp nic_mask = {
                .v_pt_rsv_flags = MLX5_GTP_FLAGS_MASK,
                .msg_type = 0xff,
                .teid = RTE_BE32(0xffffffff),
        };

        if (!priv->config.hca_attr.tunnel_stateless_gtp)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "GTP support is not enabled");
        if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "multiple tunnel layers not"
                                          " supported");
        if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "no outer UDP layer found");
        if (!mask)
                mask = &rte_flow_item_gtp_mask;
        if (spec && spec->v_pt_rsv_flags & ~MLX5_GTP_FLAGS_MASK)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "Match is supported for GTP"
                                          " flags only");
        return mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
                                         (const uint8_t *)&nic_mask,
                                         sizeof(struct rte_flow_item_gtp),
                                         MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
}

/**
 * Validate IPV4 item.
 * Use existing validation function mlx5_flow_validate_item_ipv4(), and
 * add specific validation of fragment_offset field,
 *
 * @param[in] item
 *   Item specification.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_ipv4(const struct rte_flow_item *item,
                           uint64_t item_flags,
                           uint64_t last_item,
                           uint16_t ether_type,
                           struct rte_flow_error *error)
{
        int ret;
        const struct rte_flow_item_ipv4 *spec = item->spec;
        const struct rte_flow_item_ipv4 *last = item->last;
        const struct rte_flow_item_ipv4 *mask = item->mask;
        rte_be16_t fragment_offset_spec = 0;
        rte_be16_t fragment_offset_last = 0;
        const struct rte_flow_item_ipv4 nic_ipv4_mask = {
                .hdr = {
                        .src_addr = RTE_BE32(0xffffffff),
                        .dst_addr = RTE_BE32(0xffffffff),
                        .type_of_service = 0xff,
                        .fragment_offset = RTE_BE16(0xffff),
                        .next_proto_id = 0xff,
                        .time_to_live = 0xff,
                },
        };

        ret = mlx5_flow_validate_item_ipv4(item, item_flags, last_item,
                                           ether_type, &nic_ipv4_mask,
                                           MLX5_ITEM_RANGE_ACCEPTED, error);
        if (ret < 0)
                return ret;
        if (spec && mask)
                fragment_offset_spec = spec->hdr.fragment_offset &
                                       mask->hdr.fragment_offset;
        if (!fragment_offset_spec)
                return 0;
        /*
         * spec and mask are valid, enforce using full mask to make sure the
         * complete value is used correctly.
         */
        if ((mask->hdr.fragment_offset & RTE_BE16(MLX5_IPV4_FRAG_OFFSET_MASK))
                        != RTE_BE16(MLX5_IPV4_FRAG_OFFSET_MASK))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_MASK,
                                          item, "must use full mask for"
                                          " fragment_offset");
        /*
         * Match on fragment_offset 0x2000 means MF is 1 and frag-offset is 0,
         * indicating this is 1st fragment of fragmented packet.
         * This is not yet supported in MLX5, return appropriate error message.
         */
        if (fragment_offset_spec == RTE_BE16(RTE_IPV4_HDR_MF_FLAG))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "match on first fragment not "
                                          "supported");
        if (fragment_offset_spec && !last)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "specified value not supported");
        /* spec and last are valid, validate the specified range. */
        fragment_offset_last = last->hdr.fragment_offset &
                               mask->hdr.fragment_offset;
        /*
         * Match on fragment_offset spec 0x2001 and last 0x3fff
         * means MF is 1 and frag-offset is > 0.
         * This packet is fragment 2nd and onward, excluding last.
         * This is not yet supported in MLX5, return appropriate
         * error message.
         */
        if (fragment_offset_spec == RTE_BE16(RTE_IPV4_HDR_MF_FLAG + 1) &&
            fragment_offset_last == RTE_BE16(MLX5_IPV4_FRAG_OFFSET_MASK))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM_LAST,
                                          last, "match on following "
                                          "fragments not supported");
        /*
         * Match on fragment_offset spec 0x0001 and last 0x1fff
         * means MF is 0 and frag-offset is > 0.
         * This packet is last fragment of fragmented packet.
         * This is not yet supported in MLX5, return appropriate
         * error message.
         */
        if (fragment_offset_spec == RTE_BE16(1) &&
            fragment_offset_last == RTE_BE16(RTE_IPV4_HDR_OFFSET_MASK))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM_LAST,
                                          last, "match on last "
                                          "fragment not supported");
        /*
         * Match on fragment_offset spec 0x0001 and last 0x3fff
         * means MF and/or frag-offset is not 0.
         * This is a fragmented packet.
         * Other range values are invalid and rejected.
         */
        if (!(fragment_offset_spec == RTE_BE16(1) &&
              fragment_offset_last == RTE_BE16(MLX5_IPV4_FRAG_OFFSET_MASK)))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM_LAST, last,
                                          "specified range not supported");
        return 0;
}

/**
 * Validate IPV6 fragment extension item.
 *
 * @param[in] item
 *   Item specification.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_item_ipv6_frag_ext(const struct rte_flow_item *item,
                                    uint64_t item_flags,
                                    struct rte_flow_error *error)
{
        const struct rte_flow_item_ipv6_frag_ext *spec = item->spec;
        const struct rte_flow_item_ipv6_frag_ext *last = item->last;
        const struct rte_flow_item_ipv6_frag_ext *mask = item->mask;
        rte_be16_t frag_data_spec = 0;
        rte_be16_t frag_data_last = 0;
        const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
        const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
                                      MLX5_FLOW_LAYER_OUTER_L4;
        int ret = 0;
        struct rte_flow_item_ipv6_frag_ext nic_mask = {
                .hdr = {
                        .next_header = 0xff,
                        .frag_data = RTE_BE16(0xffff),
                },
        };

        if (item_flags & l4m)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "ipv6 fragment extension item cannot "
                                          "follow L4 item.");
        if ((tunnel && !(item_flags & MLX5_FLOW_LAYER_INNER_L3_IPV6)) ||
            (!tunnel && !(item_flags & MLX5_FLOW_LAYER_OUTER_L3_IPV6)))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "ipv6 fragment extension item must "
                                          "follow ipv6 item");
        if (spec && mask)
                frag_data_spec = spec->hdr.frag_data & mask->hdr.frag_data;
        if (!frag_data_spec)
                return 0;
        /*
         * spec and mask are valid, enforce using full mask to make sure the
         * complete value is used correctly.
         */
        if ((mask->hdr.frag_data & RTE_BE16(RTE_IPV6_FRAG_USED_MASK)) !=
                                RTE_BE16(RTE_IPV6_FRAG_USED_MASK))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM_MASK,
                                          item, "must use full mask for"
                                          " frag_data");
        /*
         * Match on frag_data 0x00001 means M is 1 and frag-offset is 0.
         * This is 1st fragment of fragmented packet.
         */
        if (frag_data_spec == RTE_BE16(RTE_IPV6_EHDR_MF_MASK))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "match on first fragment not "
                                          "supported");
        if (frag_data_spec && !last)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "specified value not supported");
        ret = mlx5_flow_item_acceptable
                                (item, (const uint8_t *)mask,
                                 (const uint8_t *)&nic_mask,
                                 sizeof(struct rte_flow_item_ipv6_frag_ext),
                                 MLX5_ITEM_RANGE_ACCEPTED, error);
        if (ret)
                return ret;
        /* spec and last are valid, validate the specified range. */
        frag_data_last = last->hdr.frag_data & mask->hdr.frag_data;
        /*
         * Match on frag_data spec 0x0009 and last 0xfff9
         * means M is 1 and frag-offset is > 0.
         * This packet is fragment 2nd and onward, excluding last.
         * This is not yet supported in MLX5, return appropriate
         * error message.
         */
        if (frag_data_spec == RTE_BE16(RTE_IPV6_EHDR_FO_ALIGN |
                                       RTE_IPV6_EHDR_MF_MASK) &&
            frag_data_last == RTE_BE16(RTE_IPV6_FRAG_USED_MASK))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM_LAST,
                                          last, "match on following "
                                          "fragments not supported");
        /*
         * Match on frag_data spec 0x0008 and last 0xfff8
         * means M is 0 and frag-offset is > 0.
         * This packet is last fragment of fragmented packet.
         * This is not yet supported in MLX5, return appropriate
         * error message.
         */
        if (frag_data_spec == RTE_BE16(RTE_IPV6_EHDR_FO_ALIGN) &&
            frag_data_last == RTE_BE16(RTE_IPV6_EHDR_FO_MASK))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM_LAST,
                                          last, "match on last "
                                          "fragment not supported");
        /* Other range values are invalid and rejected. */
        return rte_flow_error_set(error, EINVAL,
                                  RTE_FLOW_ERROR_TYPE_ITEM_LAST, last,
                                  "specified range not supported");
}

/**
 * Validate the pop VLAN action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the pop vlan action.
 * @param[in] item_flags
 *   The items found in this flow rule.
 * @param[in] attr
 *   Pointer to flow attributes.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_pop_vlan(struct rte_eth_dev *dev,
                                 uint64_t action_flags,
                                 const struct rte_flow_action *action,
                                 uint64_t item_flags,
                                 const struct rte_flow_attr *attr,
                                 struct rte_flow_error *error)
{
        const struct mlx5_priv *priv = dev->data->dev_private;

        (void)action;
        (void)attr;
        if (!priv->sh->pop_vlan_action)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "pop vlan action is not supported");
        if (attr->egress)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
                                          NULL,
                                          "pop vlan action not supported for "
                                          "egress");
        if (action_flags & MLX5_FLOW_VLAN_ACTIONS)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "no support for multiple VLAN "
                                          "actions");
        /* Pop VLAN with preceding Decap requires inner header with VLAN. */
        if ((action_flags & MLX5_FLOW_ACTION_DECAP) &&
            !(item_flags & MLX5_FLOW_LAYER_INNER_VLAN))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "cannot pop vlan after decap without "
                                          "match on inner vlan in the flow");
        /* Pop VLAN without preceding Decap requires outer header with VLAN. */
        if (!(action_flags & MLX5_FLOW_ACTION_DECAP) &&
            !(item_flags & MLX5_FLOW_LAYER_OUTER_VLAN))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "cannot pop vlan without a "
                                          "match on (outer) vlan in the flow");
        if (action_flags & MLX5_FLOW_ACTION_PORT_ID)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, port_id should "
                                          "be after pop VLAN action");
        if (!attr->transfer && priv->representor)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "pop vlan action for VF representor "
                                          "not supported on NIC table");
        return 0;
}

/**
 * Get VLAN default info from vlan match info.
 *
 * @param[in] items
 *   the list of item specifications.
 * @param[out] vlan
 *   pointer VLAN info to fill to.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static void
flow_dev_get_vlan_info_from_items(const struct rte_flow_item *items,
                                  struct rte_vlan_hdr *vlan)
{
        const struct rte_flow_item_vlan nic_mask = {
                .tci = RTE_BE16(MLX5DV_FLOW_VLAN_PCP_MASK |
                                MLX5DV_FLOW_VLAN_VID_MASK),
                .inner_type = RTE_BE16(0xffff),
        };

        if (items == NULL)
                return;
        for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
                int type = items->type;

                if (type == RTE_FLOW_ITEM_TYPE_VLAN ||
                    type == MLX5_RTE_FLOW_ITEM_TYPE_VLAN)
                        break;
        }
        if (items->type != RTE_FLOW_ITEM_TYPE_END) {
                const struct rte_flow_item_vlan *vlan_m = items->mask;
                const struct rte_flow_item_vlan *vlan_v = items->spec;

                /* If VLAN item in pattern doesn't contain data, return here. */
                if (!vlan_v)
                        return;
                if (!vlan_m)
                        vlan_m = &nic_mask;
                /* Only full match values are accepted */
                if ((vlan_m->tci & MLX5DV_FLOW_VLAN_PCP_MASK_BE) ==
                     MLX5DV_FLOW_VLAN_PCP_MASK_BE) {
                        vlan->vlan_tci &= ~MLX5DV_FLOW_VLAN_PCP_MASK;
                        vlan->vlan_tci |=
                                rte_be_to_cpu_16(vlan_v->tci &
                                                 MLX5DV_FLOW_VLAN_PCP_MASK_BE);
                }
                if ((vlan_m->tci & MLX5DV_FLOW_VLAN_VID_MASK_BE) ==
                     MLX5DV_FLOW_VLAN_VID_MASK_BE) {
                        vlan->vlan_tci &= ~MLX5DV_FLOW_VLAN_VID_MASK;
                        vlan->vlan_tci |=
                                rte_be_to_cpu_16(vlan_v->tci &
                                                 MLX5DV_FLOW_VLAN_VID_MASK_BE);
                }
                if (vlan_m->inner_type == nic_mask.inner_type)
                        vlan->eth_proto = rte_be_to_cpu_16(vlan_v->inner_type &
                                                           vlan_m->inner_type);
        }
}

/**
 * Validate the push VLAN action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] item_flags
 *   The items found in this flow rule.
 * @param[in] action
 *   Pointer to the action structure.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_push_vlan(struct rte_eth_dev *dev,
                                  uint64_t action_flags,
                                  const struct rte_flow_item_vlan *vlan_m,
                                  const struct rte_flow_action *action,
                                  const struct rte_flow_attr *attr,
                                  struct rte_flow_error *error)
{
        const struct rte_flow_action_of_push_vlan *push_vlan = action->conf;
        const struct mlx5_priv *priv = dev->data->dev_private;

        if (push_vlan->ethertype != RTE_BE16(RTE_ETHER_TYPE_VLAN) &&
            push_vlan->ethertype != RTE_BE16(RTE_ETHER_TYPE_QINQ))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "invalid vlan ethertype");
        if (action_flags & MLX5_FLOW_ACTION_PORT_ID)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, port_id should "
                                          "be after push VLAN");
        if (!attr->transfer && priv->representor)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "push vlan action for VF representor "
                                          "not supported on NIC table");
        if (vlan_m &&
            (vlan_m->tci & MLX5DV_FLOW_VLAN_PCP_MASK_BE) &&
            (vlan_m->tci & MLX5DV_FLOW_VLAN_PCP_MASK_BE) !=
                MLX5DV_FLOW_VLAN_PCP_MASK_BE &&
            !(action_flags & MLX5_FLOW_ACTION_OF_SET_VLAN_PCP) &&
            !(mlx5_flow_find_action
                (action + 1, RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP)))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "not full match mask on VLAN PCP and "
                                          "there is no of_set_vlan_pcp action, "
                                          "push VLAN action cannot figure out "
                                          "PCP value");
        if (vlan_m &&
            (vlan_m->tci & MLX5DV_FLOW_VLAN_VID_MASK_BE) &&
            (vlan_m->tci & MLX5DV_FLOW_VLAN_VID_MASK_BE) !=
                MLX5DV_FLOW_VLAN_VID_MASK_BE &&
            !(action_flags & MLX5_FLOW_ACTION_OF_SET_VLAN_VID) &&
            !(mlx5_flow_find_action
                (action + 1, RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID)))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "not full match mask on VLAN VID and "
                                          "there is no of_set_vlan_vid action, "
                                          "push VLAN action cannot figure out "
                                          "VID value");
        (void)attr;
        return 0;
}

/**
 * Validate the set VLAN PCP.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] actions
 *   Pointer to the list of actions remaining in the flow rule.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_set_vlan_pcp(uint64_t action_flags,
                                     const struct rte_flow_action actions[],
                                     struct rte_flow_error *error)
{
        const struct rte_flow_action *action = actions;
        const struct rte_flow_action_of_set_vlan_pcp *conf = action->conf;

        if (conf->vlan_pcp > 7)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "VLAN PCP value is too big");
        if (!(action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "set VLAN PCP action must follow "
                                          "the push VLAN action");
        if (action_flags & MLX5_FLOW_ACTION_OF_SET_VLAN_PCP)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "Multiple VLAN PCP modification are "
                                          "not supported");
        if (action_flags & MLX5_FLOW_ACTION_PORT_ID)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, port_id should "
                                          "be after set VLAN PCP");
        return 0;
}

/**
 * Validate the set VLAN VID.
 *
 * @param[in] item_flags
 *   Holds the items detected in this rule.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] actions
 *   Pointer to the list of actions remaining in the flow rule.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_set_vlan_vid(uint64_t item_flags,
                                     uint64_t action_flags,
                                     const struct rte_flow_action actions[],
                                     struct rte_flow_error *error)
{
        const struct rte_flow_action *action = actions;
        const struct rte_flow_action_of_set_vlan_vid *conf = action->conf;

        if (rte_be_to_cpu_16(conf->vlan_vid) > 0xFFE)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "VLAN VID value is too big");
        if (!(action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN) &&
            !(item_flags & MLX5_FLOW_LAYER_OUTER_VLAN))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "set VLAN VID action must follow push"
                                          " VLAN action or match on VLAN item");
        if (action_flags & MLX5_FLOW_ACTION_OF_SET_VLAN_VID)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "Multiple VLAN VID modifications are "
                                          "not supported");
        if (action_flags & MLX5_FLOW_ACTION_PORT_ID)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, port_id should "
                                          "be after set VLAN VID");
        return 0;
}

/*
 * Validate the FLAG action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_flag(struct rte_eth_dev *dev,
                             uint64_t action_flags,
                             const struct rte_flow_attr *attr,
                             struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *config = &priv->config;
        int ret;

        /* Fall back if no extended metadata register support. */
        if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
                return mlx5_flow_validate_action_flag(action_flags, attr,
                                                      error);
        /* Extensive metadata mode requires registers. */
        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "no metadata registers "
                                          "to support flag action");
        if (!(priv->sh->dv_mark_mask & MLX5_FLOW_MARK_DEFAULT))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "extended metadata register"
                                          " isn't available");
        ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
        if (ret < 0)
                return ret;
        MLX5_ASSERT(ret > 0);
        if (action_flags & MLX5_FLOW_ACTION_MARK)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't mark and flag in same flow");
        if (action_flags & MLX5_FLOW_ACTION_FLAG)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't have 2 flag"
                                          " actions in same flow");
        return 0;
}

/**
 * Validate MARK action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action
 *   Pointer to action.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_mark(struct rte_eth_dev *dev,
                             const struct rte_flow_action *action,
                             uint64_t action_flags,
                             const struct rte_flow_attr *attr,
                             struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *config = &priv->config;
        const struct rte_flow_action_mark *mark = action->conf;
        int ret;

        /* Fall back if no extended metadata register support. */
        if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
                return mlx5_flow_validate_action_mark(action, action_flags,
                                                      attr, error);
        /* Extensive metadata mode requires registers. */
        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "no metadata registers "
                                          "to support mark action");
        if (!priv->sh->dv_mark_mask)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "extended metadata register"
                                          " isn't available");
        ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
        if (ret < 0)
                return ret;
        MLX5_ASSERT(ret > 0);
        if (!mark)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be null");
        if (mark->id >= (MLX5_FLOW_MARK_MAX & priv->sh->dv_mark_mask))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          &mark->id,
                                          "mark id exceeds the limit");
        if (action_flags & MLX5_FLOW_ACTION_FLAG)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't flag and mark in same flow");
        if (action_flags & MLX5_FLOW_ACTION_MARK)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't have 2 mark actions in same"
                                          " flow");
        return 0;
}

/**
 * Validate SET_META action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action
 *   Pointer to the action structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_set_meta(struct rte_eth_dev *dev,
                                 const struct rte_flow_action *action,
                                 uint64_t action_flags __rte_unused,
                                 const struct rte_flow_attr *attr,
                                 struct rte_flow_error *error)
{
        const struct rte_flow_action_set_meta *conf;
        uint32_t nic_mask = UINT32_MAX;
        int reg;

        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "extended metadata register"
                                          " isn't supported");
        reg = flow_dv_get_metadata_reg(dev, attr, error);
        if (reg < 0)
                return reg;
        if (reg != REG_A && reg != REG_B) {
                struct mlx5_priv *priv = dev->data->dev_private;

                nic_mask = priv->sh->dv_meta_mask;
        }
        if (!(action->conf))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be null");
        conf = (const struct rte_flow_action_set_meta *)action->conf;
        if (!conf->mask)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "zero mask doesn't have any effect");
        if (conf->mask & ~nic_mask)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "meta data must be within reg C0");
        return 0;
}

/**
 * Validate SET_TAG action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action
 *   Pointer to the action structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_set_tag(struct rte_eth_dev *dev,
                                const struct rte_flow_action *action,
                                uint64_t action_flags,
                                const struct rte_flow_attr *attr,
                                struct rte_flow_error *error)
{
        const struct rte_flow_action_set_tag *conf;
        const uint64_t terminal_action_flags =
                MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE |
                MLX5_FLOW_ACTION_RSS;
        int ret;

        if (!mlx5_flow_ext_mreg_supported(dev))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "extensive metadata register"
                                          " isn't supported");
        if (!(action->conf))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be null");
        conf = (const struct rte_flow_action_set_tag *)action->conf;
        if (!conf->mask)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "zero mask doesn't have any effect");
        ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, conf->index, error);
        if (ret < 0)
                return ret;
        if (!attr->transfer && attr->ingress &&
            (action_flags & terminal_action_flags))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "set_tag has no effect"
                                          " with terminal actions");
        return 0;
}

/**
 * Validate count action.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_count(struct rte_eth_dev *dev,
                              struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;

        if (!priv->config.devx)
                goto notsup_err;
#ifdef HAVE_IBV_FLOW_DEVX_COUNTERS
        return 0;
#endif
notsup_err:
        return rte_flow_error_set
                      (error, ENOTSUP,
                       RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                       NULL,
                       "count action not supported");
}

/**
 * Validate the L2 encap action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the action structure.
 * @param[in] attr
 *   Pointer to flow attributes.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_l2_encap(struct rte_eth_dev *dev,
                                 uint64_t action_flags,
                                 const struct rte_flow_action *action,
                                 const struct rte_flow_attr *attr,
                                 struct rte_flow_error *error)
{
        const struct mlx5_priv *priv = dev->data->dev_private;

        if (!(action->conf))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be null");
        if (action_flags & MLX5_FLOW_ACTION_ENCAP)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can only have a single encap action "
                                          "in a flow");
        if (!attr->transfer && priv->representor)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "encap action for VF representor "
                                          "not supported on NIC table");
        return 0;
}

/**
 * Validate a decap action.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_decap(struct rte_eth_dev *dev,
                              uint64_t action_flags,
                              const struct rte_flow_attr *attr,
                              struct rte_flow_error *error)
{
        const struct mlx5_priv *priv = dev->data->dev_private;

        if (priv->config.hca_attr.scatter_fcs_w_decap_disable &&
            !priv->config.decap_en)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "decap is not enabled");
        if (action_flags & MLX5_FLOW_XCAP_ACTIONS)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          action_flags &
                                          MLX5_FLOW_ACTION_DECAP ? "can only "
                                          "have a single decap action" : "decap "
                                          "after encap is not supported");
        if (action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't have decap action after"
                                          " modify action");
        if (attr->egress)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
                                          NULL,
                                          "decap action not supported for "
                                          "egress");
        if (!attr->transfer && priv->representor)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "decap action for VF representor "
                                          "not supported on NIC table");
        return 0;
}

const struct rte_flow_action_raw_decap empty_decap = {.data = NULL, .size = 0,};

/**
 * Validate the raw encap and decap actions.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] decap
 *   Pointer to the decap action.
 * @param[in] encap
 *   Pointer to the encap action.
 * @param[in] attr
 *   Pointer to flow attributes
 * @param[in/out] action_flags
 *   Holds the actions detected until now.
 * @param[out] actions_n
 *   pointer to the number of actions counter.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_raw_encap_decap
        (struct rte_eth_dev *dev,
         const struct rte_flow_action_raw_decap *decap,
         const struct rte_flow_action_raw_encap *encap,
         const struct rte_flow_attr *attr, uint64_t *action_flags,
         int *actions_n, struct rte_flow_error *error)
{
        const struct mlx5_priv *priv = dev->data->dev_private;
        int ret;

        if (encap && (!encap->size || !encap->data))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "raw encap data cannot be empty");
        if (decap && encap) {
                if (decap->size <= MLX5_ENCAPSULATION_DECISION_SIZE &&
                    encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
                        /* L3 encap. */
                        decap = NULL;
                else if (encap->size <=
                           MLX5_ENCAPSULATION_DECISION_SIZE &&
                           decap->size >
                           MLX5_ENCAPSULATION_DECISION_SIZE)
                        /* L3 decap. */
                        encap = NULL;
                else if (encap->size >
                           MLX5_ENCAPSULATION_DECISION_SIZE &&
                           decap->size >
                           MLX5_ENCAPSULATION_DECISION_SIZE)
                        /* 2 L2 actions: encap and decap. */
                        ;
                else
                        return rte_flow_error_set(error,
                                ENOTSUP,
                                RTE_FLOW_ERROR_TYPE_ACTION,
                                NULL, "unsupported too small "
                                "raw decap and too small raw "
                                "encap combination");
        }
        if (decap) {
                ret = flow_dv_validate_action_decap(dev, *action_flags, attr,
                                                    error);
                if (ret < 0)
                        return ret;
                *action_flags |= MLX5_FLOW_ACTION_DECAP;
                ++(*actions_n);
        }
        if (encap) {
                if (encap->size <= MLX5_ENCAPSULATION_DECISION_SIZE)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "small raw encap size");
                if (*action_flags & MLX5_FLOW_ACTION_ENCAP)
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "more than one encap action");
                if (!attr->transfer && priv->representor)
                        return rte_flow_error_set
                                        (error, ENOTSUP,
                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                         "encap action for VF representor "
                                         "not supported on NIC table");
                *action_flags |= MLX5_FLOW_ACTION_ENCAP;
                ++(*actions_n);
        }
        return 0;
}

/**
 * Match encap_decap resource.
 *
 * @param entry
 *   Pointer to exist resource entry object.
 * @param ctx
 *   Pointer to new encap_decap resource.
 *
 * @return
 *   0 on matching, -1 otherwise.
 */
static int
flow_dv_encap_decap_resource_match(struct mlx5_hlist_entry *entry, void *ctx)
{
        struct mlx5_flow_dv_encap_decap_resource *resource;
        struct mlx5_flow_dv_encap_decap_resource *cache_resource;

        resource = (struct mlx5_flow_dv_encap_decap_resource *)ctx;
        cache_resource = container_of(entry,
                                      struct mlx5_flow_dv_encap_decap_resource,
                                      entry);
        if (resource->entry.key == cache_resource->entry.key &&
            resource->reformat_type == cache_resource->reformat_type &&
            resource->ft_type == cache_resource->ft_type &&
            resource->flags == cache_resource->flags &&
            resource->size == cache_resource->size &&
            !memcmp((const void *)resource->buf,
                    (const void *)cache_resource->buf,
                    resource->size))
                return 0;
        return -1;
}

/**
 * Find existing encap/decap resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] resource
 *   Pointer to encap/decap resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_encap_decap_resource_register
                        (struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_encap_decap_resource *resource,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_encap_decap_resource *cache_resource;
        struct mlx5dv_dr_domain *domain;
        struct mlx5_hlist_entry *entry;
        union mlx5_flow_encap_decap_key encap_decap_key = {
                {
                        .ft_type = resource->ft_type,
                        .refmt_type = resource->reformat_type,
                        .buf_size = resource->size,
                        .table_level = !!dev_flow->dv.group,
                        .cksum = 0,
                }
        };
        int ret;

        resource->flags = dev_flow->dv.group ? 0 : 1;
        if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB)
                domain = sh->fdb_domain;
        else if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_NIC_RX)
                domain = sh->rx_domain;
        else
                domain = sh->tx_domain;
        encap_decap_key.cksum = __rte_raw_cksum(resource->buf,
                                                resource->size, 0);
        resource->entry.key = encap_decap_key.v64;
        /* Lookup a matching resource from cache. */
        entry = mlx5_hlist_lookup_ex(sh->encaps_decaps, resource->entry.key,
                                     flow_dv_encap_decap_resource_match,
                                     (void *)resource);
        if (entry) {
                cache_resource = container_of(entry,
                        struct mlx5_flow_dv_encap_decap_resource, entry);
                DRV_LOG(DEBUG, "encap/decap resource %p: refcnt %d++",
                        (void *)cache_resource,
                        rte_atomic32_read(&cache_resource->refcnt));
                rte_atomic32_inc(&cache_resource->refcnt);
                dev_flow->handle->dvh.rix_encap_decap = cache_resource->idx;
                dev_flow->dv.encap_decap = cache_resource;
                return 0;
        }
        /* Register new encap/decap resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_DECAP_ENCAP],
                                       &dev_flow->handle->dvh.rix_encap_decap);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        cache_resource->idx = dev_flow->handle->dvh.rix_encap_decap;
        ret = mlx5_flow_os_create_flow_action_packet_reformat
                                        (sh->ctx, domain, cache_resource,
                                         &cache_resource->action);
        if (ret) {
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create action");
        }
        rte_atomic32_init(&cache_resource->refcnt);
        rte_atomic32_inc(&cache_resource->refcnt);
        if (mlx5_hlist_insert_ex(sh->encaps_decaps, &cache_resource->entry,
                                 flow_dv_encap_decap_resource_match,
                                 (void *)cache_resource)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_DECAP_ENCAP],
                                cache_resource->idx);
                return rte_flow_error_set(error, EEXIST,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "action exist");
        }
        dev_flow->dv.encap_decap = cache_resource;
        DRV_LOG(DEBUG, "new encap/decap resource %p: refcnt %d++",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        return 0;
}

/**
 * Find existing table jump resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] tbl
 *   Pointer to flow table resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_jump_tbl_resource_register
                        (struct rte_eth_dev *dev __rte_unused,
                         struct mlx5_flow_tbl_resource *tbl,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_flow_tbl_data_entry *tbl_data =
                container_of(tbl, struct mlx5_flow_tbl_data_entry, tbl);
        int cnt, ret;

        MLX5_ASSERT(tbl);
        cnt = rte_atomic32_read(&tbl_data->jump.refcnt);
        if (!cnt) {
                ret = mlx5_flow_os_create_flow_action_dest_flow_tbl
                                (tbl->obj, &tbl_data->jump.action);
                if (ret)
                        return rte_flow_error_set(error, ENOMEM,
                                        RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                        NULL, "cannot create jump action");
                DRV_LOG(DEBUG, "new jump table resource %p: refcnt %d++",
                        (void *)&tbl_data->jump, cnt);
        } else {
                /* old jump should not make the table ref++. */
                flow_dv_tbl_resource_release(dev, &tbl_data->tbl);
                MLX5_ASSERT(tbl_data->jump.action);
                DRV_LOG(DEBUG, "existed jump table resource %p: refcnt %d++",
                        (void *)&tbl_data->jump, cnt);
        }
        rte_atomic32_inc(&tbl_data->jump.refcnt);
        dev_flow->handle->rix_jump = tbl_data->idx;
        dev_flow->dv.jump = &tbl_data->jump;
        return 0;
}

/**
 * Find existing default miss resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_default_miss_resource_register(struct rte_eth_dev *dev,
                struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_default_miss_resource *cache_resource =
                        &sh->default_miss;
        int cnt = rte_atomic32_read(&cache_resource->refcnt);

        if (!cnt) {
                MLX5_ASSERT(cache_resource->action);
                cache_resource->action =
                mlx5_glue->dr_create_flow_action_default_miss();
                if (!cache_resource->action)
                        return rte_flow_error_set(error, ENOMEM,
                                        RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                        "cannot create default miss action");
                DRV_LOG(DEBUG, "new default miss resource %p: refcnt %d++",
                                (void *)cache_resource->action, cnt);
        }
        rte_atomic32_inc(&cache_resource->refcnt);
        return 0;
}

/**
 * Find existing table port ID resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] resource
 *   Pointer to port ID action resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_port_id_action_resource_register
                        (struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_port_id_action_resource *resource,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_port_id_action_resource *cache_resource;
        uint32_t idx = 0;
        int ret;

        /* Lookup a matching resource from cache. */
        ILIST_FOREACH(sh->ipool[MLX5_IPOOL_PORT_ID], sh->port_id_action_list,
                      idx, cache_resource, next) {
                if (resource->port_id == cache_resource->port_id) {
                        DRV_LOG(DEBUG, "port id action resource resource %p: "
                                "refcnt %d++",
                                (void *)cache_resource,
                                rte_atomic32_read(&cache_resource->refcnt));
                        rte_atomic32_inc(&cache_resource->refcnt);
                        dev_flow->handle->rix_port_id_action = idx;
                        dev_flow->dv.port_id_action = cache_resource;
                        return 0;
                }
        }
        /* Register new port id action resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_PORT_ID],
                                       &dev_flow->handle->rix_port_id_action);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        ret = mlx5_flow_os_create_flow_action_dest_port
                                (priv->sh->fdb_domain, resource->port_id,
                                 &cache_resource->action);
        if (ret) {
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create action");
        }
        rte_atomic32_init(&cache_resource->refcnt);
        rte_atomic32_inc(&cache_resource->refcnt);
        ILIST_INSERT(sh->ipool[MLX5_IPOOL_PORT_ID], &sh->port_id_action_list,
                     dev_flow->handle->rix_port_id_action, cache_resource,
                     next);
        dev_flow->dv.port_id_action = cache_resource;
        DRV_LOG(DEBUG, "new port id action resource %p: refcnt %d++",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        return 0;
}

/**
 * Find existing push vlan resource or create and register a new one.
 *
 * @param [in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] resource
 *   Pointer to port ID action resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_push_vlan_action_resource_register
                       (struct rte_eth_dev *dev,
                        struct mlx5_flow_dv_push_vlan_action_resource *resource,
                        struct mlx5_flow *dev_flow,
                        struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_push_vlan_action_resource *cache_resource;
        struct mlx5dv_dr_domain *domain;
        uint32_t idx = 0;
        int ret;

        /* Lookup a matching resource from cache. */
        ILIST_FOREACH(sh->ipool[MLX5_IPOOL_PUSH_VLAN],
                      sh->push_vlan_action_list, idx, cache_resource, next) {
                if (resource->vlan_tag == cache_resource->vlan_tag &&
                    resource->ft_type == cache_resource->ft_type) {
                        DRV_LOG(DEBUG, "push-VLAN action resource resource %p: "
                                "refcnt %d++",
                                (void *)cache_resource,
                                rte_atomic32_read(&cache_resource->refcnt));
                        rte_atomic32_inc(&cache_resource->refcnt);
                        dev_flow->handle->dvh.rix_push_vlan = idx;
                        dev_flow->dv.push_vlan_res = cache_resource;
                        return 0;
                }
        }
        /* Register new push_vlan action resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_PUSH_VLAN],
                                       &dev_flow->handle->dvh.rix_push_vlan);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB)
                domain = sh->fdb_domain;
        else if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_NIC_RX)
                domain = sh->rx_domain;
        else
                domain = sh->tx_domain;
        ret = mlx5_flow_os_create_flow_action_push_vlan
                                        (domain, resource->vlan_tag,
                                         &cache_resource->action);
        if (ret) {
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create action");
        }
        rte_atomic32_init(&cache_resource->refcnt);
        rte_atomic32_inc(&cache_resource->refcnt);
        ILIST_INSERT(sh->ipool[MLX5_IPOOL_PUSH_VLAN],
                     &sh->push_vlan_action_list,
                     dev_flow->handle->dvh.rix_push_vlan,
                     cache_resource, next);
        dev_flow->dv.push_vlan_res = cache_resource;
        DRV_LOG(DEBUG, "new push vlan action resource %p: refcnt %d++",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        return 0;
}
/**
 * Get the size of specific rte_flow_item_type hdr size
 *
 * @param[in] item_type
 *   Tested rte_flow_item_type.
 *
 * @return
 *   sizeof struct item_type, 0 if void or irrelevant.
 */
static size_t
flow_dv_get_item_hdr_len(const enum rte_flow_item_type item_type)
{
        size_t retval;

        switch (item_type) {
        case RTE_FLOW_ITEM_TYPE_ETH:
                retval = sizeof(struct rte_ether_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_VLAN:
                retval = sizeof(struct rte_vlan_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_IPV4:
                retval = sizeof(struct rte_ipv4_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_IPV6:
                retval = sizeof(struct rte_ipv6_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_UDP:
                retval = sizeof(struct rte_udp_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_TCP:
                retval = sizeof(struct rte_tcp_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_VXLAN:
        case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
                retval = sizeof(struct rte_vxlan_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_GRE:
        case RTE_FLOW_ITEM_TYPE_NVGRE:
                retval = sizeof(struct rte_gre_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_MPLS:
                retval = sizeof(struct rte_mpls_hdr);
                break;
        case RTE_FLOW_ITEM_TYPE_VOID: /* Fall through. */
        default:
                retval = 0;
                break;
        }
        return retval;
}

#define MLX5_ENCAP_IPV4_VERSION         0x40
#define MLX5_ENCAP_IPV4_IHL_MIN         0x05
#define MLX5_ENCAP_IPV4_TTL_DEF         0x40
#define MLX5_ENCAP_IPV6_VTC_FLOW        0x60000000
#define MLX5_ENCAP_IPV6_HOP_LIMIT       0xff
#define MLX5_ENCAP_VXLAN_FLAGS          0x08000000
#define MLX5_ENCAP_VXLAN_GPE_FLAGS      0x04

/**
 * Convert the encap action data from list of rte_flow_item to raw buffer
 *
 * @param[in] items
 *   Pointer to rte_flow_item objects list.
 * @param[out] buf
 *   Pointer to the output buffer.
 * @param[out] size
 *   Pointer to the output buffer size.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_convert_encap_data(const struct rte_flow_item *items, uint8_t *buf,
                           size_t *size, struct rte_flow_error *error)
{
        struct rte_ether_hdr *eth = NULL;
        struct rte_vlan_hdr *vlan = NULL;
        struct rte_ipv4_hdr *ipv4 = NULL;
        struct rte_ipv6_hdr *ipv6 = NULL;
        struct rte_udp_hdr *udp = NULL;
        struct rte_vxlan_hdr *vxlan = NULL;
        struct rte_vxlan_gpe_hdr *vxlan_gpe = NULL;
        struct rte_gre_hdr *gre = NULL;
        size_t len;
        size_t temp_size = 0;

        if (!items)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "invalid empty data");
        for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
                len = flow_dv_get_item_hdr_len(items->type);
                if (len + temp_size > MLX5_ENCAP_MAX_LEN)
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  (void *)items->type,
                                                  "items total size is too big"
                                                  " for encap action");
                rte_memcpy((void *)&buf[temp_size], items->spec, len);
                switch (items->type) {
                case RTE_FLOW_ITEM_TYPE_ETH:
                        eth = (struct rte_ether_hdr *)&buf[temp_size];
                        break;
                case RTE_FLOW_ITEM_TYPE_VLAN:
                        vlan = (struct rte_vlan_hdr *)&buf[temp_size];
                        if (!eth)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "eth header not found");
                        if (!eth->ether_type)
                                eth->ether_type = RTE_BE16(RTE_ETHER_TYPE_VLAN);
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV4:
                        ipv4 = (struct rte_ipv4_hdr *)&buf[temp_size];
                        if (!vlan && !eth)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "neither eth nor vlan"
                                                " header found");
                        if (vlan && !vlan->eth_proto)
                                vlan->eth_proto = RTE_BE16(RTE_ETHER_TYPE_IPV4);
                        else if (eth && !eth->ether_type)
                                eth->ether_type = RTE_BE16(RTE_ETHER_TYPE_IPV4);
                        if (!ipv4->version_ihl)
                                ipv4->version_ihl = MLX5_ENCAP_IPV4_VERSION |
                                                    MLX5_ENCAP_IPV4_IHL_MIN;
                        if (!ipv4->time_to_live)
                                ipv4->time_to_live = MLX5_ENCAP_IPV4_TTL_DEF;
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6:
                        ipv6 = (struct rte_ipv6_hdr *)&buf[temp_size];
                        if (!vlan && !eth)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "neither eth nor vlan"
                                                " header found");
                        if (vlan && !vlan->eth_proto)
                                vlan->eth_proto = RTE_BE16(RTE_ETHER_TYPE_IPV6);
                        else if (eth && !eth->ether_type)
                                eth->ether_type = RTE_BE16(RTE_ETHER_TYPE_IPV6);
                        if (!ipv6->vtc_flow)
                                ipv6->vtc_flow =
                                        RTE_BE32(MLX5_ENCAP_IPV6_VTC_FLOW);
                        if (!ipv6->hop_limits)
                                ipv6->hop_limits = MLX5_ENCAP_IPV6_HOP_LIMIT;
                        break;
                case RTE_FLOW_ITEM_TYPE_UDP:
                        udp = (struct rte_udp_hdr *)&buf[temp_size];
                        if (!ipv4 && !ipv6)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "ip header not found");
                        if (ipv4 && !ipv4->next_proto_id)
                                ipv4->next_proto_id = IPPROTO_UDP;
                        else if (ipv6 && !ipv6->proto)
                                ipv6->proto = IPPROTO_UDP;
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN:
                        vxlan = (struct rte_vxlan_hdr *)&buf[temp_size];
                        if (!udp)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "udp header not found");
                        if (!udp->dst_port)
                                udp->dst_port = RTE_BE16(MLX5_UDP_PORT_VXLAN);
                        if (!vxlan->vx_flags)
                                vxlan->vx_flags =
                                        RTE_BE32(MLX5_ENCAP_VXLAN_FLAGS);
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
                        vxlan_gpe = (struct rte_vxlan_gpe_hdr *)&buf[temp_size];
                        if (!udp)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "udp header not found");
                        if (!vxlan_gpe->proto)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "next protocol not found");
                        if (!udp->dst_port)
                                udp->dst_port =
                                        RTE_BE16(MLX5_UDP_PORT_VXLAN_GPE);
                        if (!vxlan_gpe->vx_flags)
                                vxlan_gpe->vx_flags =
                                                MLX5_ENCAP_VXLAN_GPE_FLAGS;
                        break;
                case RTE_FLOW_ITEM_TYPE_GRE:
                case RTE_FLOW_ITEM_TYPE_NVGRE:
                        gre = (struct rte_gre_hdr *)&buf[temp_size];
                        if (!gre->proto)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "next protocol not found");
                        if (!ipv4 && !ipv6)
                                return rte_flow_error_set(error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                (void *)items->type,
                                                "ip header not found");
                        if (ipv4 && !ipv4->next_proto_id)
                                ipv4->next_proto_id = IPPROTO_GRE;
                        else if (ipv6 && !ipv6->proto)
                                ipv6->proto = IPPROTO_GRE;
                        break;
                case RTE_FLOW_ITEM_TYPE_VOID:
                        break;
                default:
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  (void *)items->type,
                                                  "unsupported item type");
                        break;
                }
                temp_size += len;
        }
        *size = temp_size;
        return 0;
}

static int
flow_dv_zero_encap_udp_csum(void *data, struct rte_flow_error *error)
{
        struct rte_ether_hdr *eth = NULL;
        struct rte_vlan_hdr *vlan = NULL;
        struct rte_ipv6_hdr *ipv6 = NULL;
        struct rte_udp_hdr *udp = NULL;
        char *next_hdr;
        uint16_t proto;

        eth = (struct rte_ether_hdr *)data;
        next_hdr = (char *)(eth + 1);
        proto = RTE_BE16(eth->ether_type);

        /* VLAN skipping */
        while (proto == RTE_ETHER_TYPE_VLAN || proto == RTE_ETHER_TYPE_QINQ) {
                vlan = (struct rte_vlan_hdr *)next_hdr;
                proto = RTE_BE16(vlan->eth_proto);
                next_hdr += sizeof(struct rte_vlan_hdr);
        }

        /* HW calculates IPv4 csum. no need to proceed */
        if (proto == RTE_ETHER_TYPE_IPV4)
                return 0;

        /* non IPv4/IPv6 header. not supported */
        if (proto != RTE_ETHER_TYPE_IPV6) {
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "Cannot offload non IPv4/IPv6");
        }

        ipv6 = (struct rte_ipv6_hdr *)next_hdr;

        /* ignore non UDP */
        if (ipv6->proto != IPPROTO_UDP)
                return 0;

        udp = (struct rte_udp_hdr *)(ipv6 + 1);
        udp->dgram_cksum = 0;

        return 0;
}

/**
 * Convert L2 encap action to DV specification.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action
 *   Pointer to action structure.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] transfer
 *   Mark if the flow is E-Switch flow.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_create_action_l2_encap(struct rte_eth_dev *dev,
                               const struct rte_flow_action *action,
                               struct mlx5_flow *dev_flow,
                               uint8_t transfer,
                               struct rte_flow_error *error)
{
        const struct rte_flow_item *encap_data;
        const struct rte_flow_action_raw_encap *raw_encap_data;
        struct mlx5_flow_dv_encap_decap_resource res = {
                .reformat_type =
                        MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL,
                .ft_type = transfer ? MLX5DV_FLOW_TABLE_TYPE_FDB :
                                      MLX5DV_FLOW_TABLE_TYPE_NIC_TX,
        };

        if (action->type == RTE_FLOW_ACTION_TYPE_RAW_ENCAP) {
                raw_encap_data =
                        (const struct rte_flow_action_raw_encap *)action->conf;
                res.size = raw_encap_data->size;
                memcpy(res.buf, raw_encap_data->data, res.size);
        } else {
                if (action->type == RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP)
                        encap_data =
                                ((const struct rte_flow_action_vxlan_encap *)
                                                action->conf)->definition;
                else
                        encap_data =
                                ((const struct rte_flow_action_nvgre_encap *)
                                                action->conf)->definition;
                if (flow_dv_convert_encap_data(encap_data, res.buf,
                                               &res.size, error))
                        return -rte_errno;
        }
        if (flow_dv_zero_encap_udp_csum(res.buf, error))
                return -rte_errno;
        if (flow_dv_encap_decap_resource_register(dev, &res, dev_flow, error))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "can't create L2 encap action");
        return 0;
}

/**
 * Convert L2 decap action to DV specification.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] transfer
 *   Mark if the flow is E-Switch flow.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_create_action_l2_decap(struct rte_eth_dev *dev,
                               struct mlx5_flow *dev_flow,
                               uint8_t transfer,
                               struct rte_flow_error *error)
{
        struct mlx5_flow_dv_encap_decap_resource res = {
                .size = 0,
                .reformat_type =
                        MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2,
                .ft_type = transfer ? MLX5DV_FLOW_TABLE_TYPE_FDB :
                                      MLX5DV_FLOW_TABLE_TYPE_NIC_RX,
        };

        if (flow_dv_encap_decap_resource_register(dev, &res, dev_flow, error))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "can't create L2 decap action");
        return 0;
}

/**
 * Convert raw decap/encap (L3 tunnel) action to DV specification.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action
 *   Pointer to action structure.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_create_action_raw_encap(struct rte_eth_dev *dev,
                                const struct rte_flow_action *action,
                                struct mlx5_flow *dev_flow,
                                const struct rte_flow_attr *attr,
                                struct rte_flow_error *error)
{
        const struct rte_flow_action_raw_encap *encap_data;
        struct mlx5_flow_dv_encap_decap_resource res;

        memset(&res, 0, sizeof(res));
        encap_data = (const struct rte_flow_action_raw_encap *)action->conf;
        res.size = encap_data->size;
        memcpy(res.buf, encap_data->data, res.size);
        res.reformat_type = res.size < MLX5_ENCAPSULATION_DECISION_SIZE ?
                MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2 :
                MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
        if (attr->transfer)
                res.ft_type = MLX5DV_FLOW_TABLE_TYPE_FDB;
        else
                res.ft_type = attr->egress ? MLX5DV_FLOW_TABLE_TYPE_NIC_TX :
                                             MLX5DV_FLOW_TABLE_TYPE_NIC_RX;
        if (flow_dv_encap_decap_resource_register(dev, &res, dev_flow, error))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "can't create encap action");
        return 0;
}

/**
 * Create action push VLAN.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in] vlan
 *   Pointer to the vlan to push to the Ethernet header.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_create_action_push_vlan(struct rte_eth_dev *dev,
                                const struct rte_flow_attr *attr,
                                const struct rte_vlan_hdr *vlan,
                                struct mlx5_flow *dev_flow,
                                struct rte_flow_error *error)
{
        struct mlx5_flow_dv_push_vlan_action_resource res;

        memset(&res, 0, sizeof(res));
        res.vlan_tag =
                rte_cpu_to_be_32(((uint32_t)vlan->eth_proto) << 16 |
                                 vlan->vlan_tci);
        if (attr->transfer)
                res.ft_type = MLX5DV_FLOW_TABLE_TYPE_FDB;
        else
                res.ft_type = attr->egress ? MLX5DV_FLOW_TABLE_TYPE_NIC_TX :
                                             MLX5DV_FLOW_TABLE_TYPE_NIC_RX;
        return flow_dv_push_vlan_action_resource_register
                                            (dev, &res, dev_flow, error);
}

static int fdb_mirror;

/**
 * Validate the modify-header actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_hdr(const uint64_t action_flags,
                                   const struct rte_flow_action *action,
                                   struct rte_flow_error *error)
{
        if (action->type != RTE_FLOW_ACTION_TYPE_DEC_TTL && !action->conf)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          NULL, "action configuration not set");
        if (action_flags & MLX5_FLOW_ACTION_ENCAP)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't have encap action before"
                                          " modify action");
        if ((action_flags & MLX5_FLOW_ACTION_SAMPLE) && fdb_mirror)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't support sample action before"
                                          " modify action for E-Switch"
                                          " mirroring");
        return 0;
}

/**
 * Validate the modify-header MAC address actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_mac(const uint64_t action_flags,
                                   const struct rte_flow_action *action,
                                   const uint64_t item_flags,
                                   struct rte_flow_error *error)
{
        int ret = 0;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                if (!(item_flags & MLX5_FLOW_LAYER_L2))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no L2 item in pattern");
        }
        return ret;
}

/**
 * Validate the modify-header IPv4 address actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_ipv4(const uint64_t action_flags,
                                    const struct rte_flow_action *action,
                                    const uint64_t item_flags,
                                    struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L3_IPV4 :
                                 MLX5_FLOW_LAYER_OUTER_L3_IPV4;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no ipv4 item in pattern");
        }
        return ret;
}

/**
 * Validate the modify-header IPv6 address actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_ipv6(const uint64_t action_flags,
                                    const struct rte_flow_action *action,
                                    const uint64_t item_flags,
                                    struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L3_IPV6 :
                                 MLX5_FLOW_LAYER_OUTER_L3_IPV6;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no ipv6 item in pattern");
        }
        return ret;
}

/**
 * Validate the modify-header TP actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_tp(const uint64_t action_flags,
                                  const struct rte_flow_action *action,
                                  const uint64_t item_flags,
                                  struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L4 :
                                 MLX5_FLOW_LAYER_OUTER_L4;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "no transport layer "
                                                  "in pattern");
        }
        return ret;
}

/**
 * Validate the modify-header actions of increment/decrement
 * TCP Sequence-number.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_tcp_seq(const uint64_t action_flags,
                                       const struct rte_flow_action *action,
                                       const uint64_t item_flags,
                                       struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L4_TCP :
                                 MLX5_FLOW_LAYER_OUTER_L4_TCP;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "no TCP item in"
                                                  " pattern");
                if ((action->type == RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ &&
                        (action_flags & MLX5_FLOW_ACTION_DEC_TCP_SEQ)) ||
                    (action->type == RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ &&
                        (action_flags & MLX5_FLOW_ACTION_INC_TCP_SEQ)))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "cannot decrease and increase"
                                                  " TCP sequence number"
                                                  " at the same time");
        }
        return ret;
}

/**
 * Validate the modify-header actions of increment/decrement
 * TCP Acknowledgment number.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_tcp_ack(const uint64_t action_flags,
                                       const struct rte_flow_action *action,
                                       const uint64_t item_flags,
                                       struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L4_TCP :
                                 MLX5_FLOW_LAYER_OUTER_L4_TCP;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "no TCP item in"
                                                  " pattern");
                if ((action->type == RTE_FLOW_ACTION_TYPE_INC_TCP_ACK &&
                        (action_flags & MLX5_FLOW_ACTION_DEC_TCP_ACK)) ||
                    (action->type == RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK &&
                        (action_flags & MLX5_FLOW_ACTION_INC_TCP_ACK)))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "cannot decrease and increase"
                                                  " TCP acknowledgment number"
                                                  " at the same time");
        }
        return ret;
}

/**
 * Validate the modify-header TTL actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_ttl(const uint64_t action_flags,
                                   const struct rte_flow_action *action,
                                   const uint64_t item_flags,
                                   struct rte_flow_error *error)
{
        int ret = 0;
        uint64_t layer;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                layer = (action_flags & MLX5_FLOW_ACTION_DECAP) ?
                                 MLX5_FLOW_LAYER_INNER_L3 :
                                 MLX5_FLOW_LAYER_OUTER_L3;
                if (!(item_flags & layer))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no IP protocol in pattern");
        }
        return ret;
}

/**
 * Validate jump action.
 *
 * @param[in] action
 *   Pointer to the jump action.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] attributes
 *   Pointer to flow attributes
 * @param[in] external
 *   Action belongs to flow rule created by request external to PMD.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_jump(struct rte_eth_dev *dev,
                             const struct mlx5_flow_tunnel *tunnel,
                             const struct rte_flow_action *action,
                             uint64_t action_flags,
                             const struct rte_flow_attr *attributes,
                             bool external, struct rte_flow_error *error)
{
        uint32_t target_group, table;
        int ret = 0;
        struct flow_grp_info grp_info = {
                .external = !!external,
                .transfer = !!attributes->transfer,
                .fdb_def_rule = 1,
                .std_tbl_fix = 0
        };
        if (action_flags & (MLX5_FLOW_FATE_ACTIONS |
                            MLX5_FLOW_FATE_ESWITCH_ACTIONS))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can't have 2 fate actions in"
                                          " same flow");
        if (action_flags & MLX5_FLOW_ACTION_METER)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "jump with meter not support");
        if ((action_flags & MLX5_FLOW_ACTION_SAMPLE) && fdb_mirror)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "E-Switch mirroring can't support"
                                          " Sample action and jump action in"
                                          " same flow now");
        if (!action->conf)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          NULL, "action configuration not set");
        target_group =
                ((const struct rte_flow_action_jump *)action->conf)->group;
        ret = mlx5_flow_group_to_table(dev, tunnel, target_group, &table,
                                       grp_info, error);
        if (ret)
                return ret;
        if (attributes->group == target_group &&
            !(action_flags & (MLX5_FLOW_ACTION_TUNNEL_SET |
                              MLX5_FLOW_ACTION_TUNNEL_MATCH)))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "target group must be other than"
                                          " the current flow group");
        return 0;
}

/*
 * Validate the port_id action.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action_flags
 *   Bit-fields that holds the actions detected until now.
 * @param[in] action
 *   Port_id RTE action structure.
 * @param[in] attr
 *   Attributes of flow that includes this action.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_port_id(struct rte_eth_dev *dev,
                                uint64_t action_flags,
                                const struct rte_flow_action *action,
                                const struct rte_flow_attr *attr,
                                struct rte_flow_error *error)
{
        const struct rte_flow_action_port_id *port_id;
        struct mlx5_priv *act_priv;
        struct mlx5_priv *dev_priv;
        uint16_t port;

        if (!attr->transfer)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "port id action is valid in transfer"
                                          " mode only");
        if (!action || !action->conf)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION_CONF,
                                          NULL,
                                          "port id action parameters must be"
                                          " specified");
        if (action_flags & (MLX5_FLOW_FATE_ACTIONS |
                            MLX5_FLOW_FATE_ESWITCH_ACTIONS))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "can have only one fate actions in"
                                          " a flow");
        dev_priv = mlx5_dev_to_eswitch_info(dev);
        if (!dev_priv)
                return rte_flow_error_set(error, rte_errno,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "failed to obtain E-Switch info");
        port_id = action->conf;
        port = port_id->original ? dev->data->port_id : port_id->id;
        act_priv = mlx5_port_to_eswitch_info(port, false);
        if (!act_priv)
                return rte_flow_error_set
                                (error, rte_errno,
                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF, port_id,
                                 "failed to obtain E-Switch port id for port");
        if (act_priv->domain_id != dev_priv->domain_id)
                return rte_flow_error_set
                                (error, EINVAL,
                                 RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                 "port does not belong to"
                                 " E-Switch being configured");
        return 0;
}

/**
 * Get the maximum number of modify header actions.
 *
 * @param dev
 *   Pointer to rte_eth_dev structure.
 * @param flags
 *   Flags bits to check if root level.
 *
 * @return
 *   Max number of modify header actions device can support.
 */
static inline unsigned int
flow_dv_modify_hdr_action_max(struct rte_eth_dev *dev __rte_unused,
                              uint64_t flags)
{
        /*
         * There's no way to directly query the max capacity from FW.
         * The maximal value on root table should be assumed to be supported.
         */
        if (!(flags & MLX5DV_DR_ACTION_FLAGS_ROOT_LEVEL))
                return MLX5_MAX_MODIFY_NUM;
        else
                return MLX5_ROOT_TBL_MODIFY_NUM;
}

/**
 * Validate the meter action.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action_flags
 *   Bit-fields that holds the actions detected until now.
 * @param[in] action
 *   Pointer to the meter action.
 * @param[in] attr
 *   Attributes of flow that includes this action.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_ernno is set.
 */
static int
mlx5_flow_validate_action_meter(struct rte_eth_dev *dev,
                                uint64_t action_flags,
                                const struct rte_flow_action *action,
                                const struct rte_flow_attr *attr,
                                struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_action_meter *am = action->conf;
        struct mlx5_flow_meter *fm;

        if (!am)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "meter action conf is NULL");

        if (action_flags & MLX5_FLOW_ACTION_METER)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "meter chaining not support");
        if (action_flags & MLX5_FLOW_ACTION_JUMP)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "meter with jump not support");
        if (!priv->mtr_en)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "meter action not supported");
        fm = mlx5_flow_meter_find(priv, am->mtr_id);
        if (!fm)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "Meter not found");
        if (fm->ref_cnt && (!(fm->transfer == attr->transfer ||
              (!fm->ingress && !attr->ingress && attr->egress) ||
              (!fm->egress && !attr->egress && attr->ingress))))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "Flow attributes are either invalid "
                                          "or have a conflict with current "
                                          "meter attributes");
        return 0;
}

/**
 * Validate the age action.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the age action.
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_age(uint64_t action_flags,
                            const struct rte_flow_action *action,
                            struct rte_eth_dev *dev,
                            struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_action_age *age = action->conf;

        if (!priv->config.devx || priv->sh->cmng.counter_fallback)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "age action not supported");
        if (!(action->conf))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be null");
        if (!(age->timeout))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "invalid timeout value 0");
        if (action_flags & MLX5_FLOW_ACTION_AGE)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "duplicate age actions set");
        return 0;
}

/**
 * Validate the modify-header IPv4 DSCP actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_ipv4_dscp(const uint64_t action_flags,
                                         const struct rte_flow_action *action,
                                         const uint64_t item_flags,
                                         struct rte_flow_error *error)
{
        int ret = 0;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                if (!(item_flags & MLX5_FLOW_LAYER_L3_IPV4))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no ipv4 item in pattern");
        }
        return ret;
}

/**
 * Validate the modify-header IPv6 DSCP actions.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the modify action.
 * @param[in] item_flags
 *   Holds the items detected.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_modify_ipv6_dscp(const uint64_t action_flags,
                                         const struct rte_flow_action *action,
                                         const uint64_t item_flags,
                                         struct rte_flow_error *error)
{
        int ret = 0;

        ret = flow_dv_validate_action_modify_hdr(action_flags, action, error);
        if (!ret) {
                if (!(item_flags & MLX5_FLOW_LAYER_L3_IPV6))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "no ipv6 item in pattern");
        }
        return ret;
}

/**
 * Match modify-header resource.
 *
 * @param entry
 *   Pointer to exist resource entry object.
 * @param ctx
 *   Pointer to new modify-header resource.
 *
 * @return
 *   0 on matching, -1 otherwise.
 */
static int
flow_dv_modify_hdr_resource_match(struct mlx5_hlist_entry *entry, void *ctx)
{
        struct mlx5_flow_dv_modify_hdr_resource *resource;
        struct mlx5_flow_dv_modify_hdr_resource *cache_resource;
        uint32_t actions_len;

        resource = (struct mlx5_flow_dv_modify_hdr_resource *)ctx;
        cache_resource = container_of(entry,
                                      struct mlx5_flow_dv_modify_hdr_resource,
                                      entry);
        actions_len = resource->actions_num * sizeof(resource->actions[0]);
        if (resource->entry.key == cache_resource->entry.key &&
            resource->ft_type == cache_resource->ft_type &&
            resource->actions_num == cache_resource->actions_num &&
            resource->flags == cache_resource->flags &&
            !memcmp((const void *)resource->actions,
                    (const void *)cache_resource->actions,
                    actions_len))
                return 0;
        return -1;
}

/**
 * Validate the sample action.
 *
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[in] action
 *   Pointer to the sample action.
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] attr
 *   Attributes of flow that includes this action.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_action_sample(uint64_t action_flags,
                               const struct rte_flow_action *action,
                               struct rte_eth_dev *dev,
                               const struct rte_flow_attr *attr,
                               struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *dev_conf = &priv->config;
        const struct rte_flow_action_sample *sample = action->conf;
        const struct rte_flow_action *act;
        uint64_t sub_action_flags = 0;
        uint16_t queue_index = 0xFFFF;
        int actions_n = 0;
        int ret;
        fdb_mirror = 0;

        if (!sample)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "configuration cannot be NULL");
        if (sample->ratio == 0)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "ratio value starts from 1");
        if (!priv->config.devx || (sample->ratio > 0 && !priv->sampler_en))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "sample action not supported");
        if (action_flags & MLX5_FLOW_ACTION_SAMPLE)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "Multiple sample actions not "
                                          "supported");
        if (action_flags & MLX5_FLOW_ACTION_METER)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, meter should "
                                          "be after sample action");
        if (action_flags & MLX5_FLOW_ACTION_JUMP)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "wrong action order, jump should "
                                          "be after sample action");
        act = sample->actions;
        for (; act->type != RTE_FLOW_ACTION_TYPE_END; act++) {
                if (actions_n == MLX5_DV_MAX_NUMBER_OF_ACTIONS)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  act, "too many actions");
                switch (act->type) {
                case RTE_FLOW_ACTION_TYPE_QUEUE:
                        ret = mlx5_flow_validate_action_queue(act,
                                                              sub_action_flags,
                                                              dev,
                                                              attr, error);
                        if (ret < 0)
                                return ret;
                        queue_index = ((const struct rte_flow_action_queue *)
                                                        (act->conf))->index;
                        sub_action_flags |= MLX5_FLOW_ACTION_QUEUE;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_MARK:
                        ret = flow_dv_validate_action_mark(dev, act,
                                                           sub_action_flags,
                                                           attr, error);
                        if (ret < 0)
                                return ret;
                        if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY)
                                sub_action_flags |= MLX5_FLOW_ACTION_MARK |
                                                MLX5_FLOW_ACTION_MARK_EXT;
                        else
                                sub_action_flags |= MLX5_FLOW_ACTION_MARK;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_COUNT:
                        ret = flow_dv_validate_action_count(dev, error);
                        if (ret < 0)
                                return ret;
                        sub_action_flags |= MLX5_FLOW_ACTION_COUNT;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_PORT_ID:
                        ret = flow_dv_validate_action_port_id(dev,
                                                              sub_action_flags,
                                                              act,
                                                              attr,
                                                              error);
                        if (ret)
                                return ret;
                        sub_action_flags |= MLX5_FLOW_ACTION_PORT_ID;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
                        ret = flow_dv_validate_action_raw_encap_decap
                                (dev, NULL, act->conf, attr, &sub_action_flags,
                                 &actions_n, error);
                        if (ret < 0)
                                return ret;
                        ++actions_n;
                        break;
                default:
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "Doesn't support optional "
                                                  "action");
                }
        }
        if (attr->ingress && !attr->transfer) {
                if (!(sub_action_flags & MLX5_FLOW_ACTION_QUEUE))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "Ingress must has a dest "
                                                  "QUEUE for Sample");
        } else if (attr->egress && !attr->transfer) {
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "Sample Only support Ingress "
                                          "or E-Switch");
        } else if (sample->actions->type != RTE_FLOW_ACTION_TYPE_END) {
                MLX5_ASSERT(attr->transfer);
                if (sample->ratio > 1)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "E-Switch doesn't support "
                                                  "any optional action "
                                                  "for sampling");
                fdb_mirror = 1;
                if (sub_action_flags & MLX5_FLOW_ACTION_QUEUE)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "unsupported action QUEUE");
                if (!(sub_action_flags & MLX5_FLOW_ACTION_PORT_ID))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "E-Switch must has a dest "
                                                  "port for mirroring");
        }
        /* Continue validation for Xcap actions.*/
        if ((sub_action_flags & MLX5_FLOW_XCAP_ACTIONS) &&
            (queue_index == 0xFFFF ||
             mlx5_rxq_get_type(dev, queue_index) != MLX5_RXQ_TYPE_HAIRPIN)) {
                if ((sub_action_flags & MLX5_FLOW_XCAP_ACTIONS) ==
                     MLX5_FLOW_XCAP_ACTIONS)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "encap and decap "
                                                  "combination aren't "
                                                  "supported");
                if (!attr->transfer && attr->ingress && (sub_action_flags &
                                                        MLX5_FLOW_ACTION_ENCAP))
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "encap is not supported"
                                                  " for ingress traffic");
        }
        return 0;
}

/**
 * Find existing modify-header resource or create and register a new one.
 *
 * @param dev[in, out]
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] resource
 *   Pointer to modify-header resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_modify_hdr_resource_register
                        (struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_modify_hdr_resource *resource,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_modify_hdr_resource *cache_resource;
        struct mlx5dv_dr_domain *ns;
        uint32_t actions_len;
        struct mlx5_hlist_entry *entry;
        union mlx5_flow_modify_hdr_key hdr_mod_key = {
                {
                        .ft_type = resource->ft_type,
                        .actions_num = resource->actions_num,
                        .group = dev_flow->dv.group,
                        .cksum = 0,
                }
        };
        int ret;

        resource->flags = dev_flow->dv.group ? 0 :
                          MLX5DV_DR_ACTION_FLAGS_ROOT_LEVEL;
        if (resource->actions_num > flow_dv_modify_hdr_action_max(dev,
                                    resource->flags))
                return rte_flow_error_set(error, EOVERFLOW,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "too many modify header items");
        if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB)
                ns = sh->fdb_domain;
        else if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_NIC_TX)
                ns = sh->tx_domain;
        else
                ns = sh->rx_domain;
        /* Lookup a matching resource from cache. */
        actions_len = resource->actions_num * sizeof(resource->actions[0]);
        hdr_mod_key.cksum = __rte_raw_cksum(resource->actions, actions_len, 0);
        resource->entry.key = hdr_mod_key.v64;
        entry = mlx5_hlist_lookup_ex(sh->modify_cmds, resource->entry.key,
                                     flow_dv_modify_hdr_resource_match,
                                     (void *)resource);
        if (entry) {
                cache_resource = container_of(entry,
                                        struct mlx5_flow_dv_modify_hdr_resource,
                                        entry);
                DRV_LOG(DEBUG, "modify-header resource %p: refcnt %d++",
                        (void *)cache_resource,
                        rte_atomic32_read(&cache_resource->refcnt));
                rte_atomic32_inc(&cache_resource->refcnt);
                dev_flow->handle->dvh.modify_hdr = cache_resource;
                return 0;

        }
        /* Register new modify-header resource. */
        cache_resource = mlx5_malloc(MLX5_MEM_ZERO,
                                    sizeof(*cache_resource) + actions_len, 0,
                                    SOCKET_ID_ANY);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        rte_memcpy(cache_resource->actions, resource->actions, actions_len);
        ret = mlx5_flow_os_create_flow_action_modify_header
                                        (sh->ctx, ns, cache_resource,
                                         actions_len, &cache_resource->action);
        if (ret) {
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create action");
        }
        rte_atomic32_init(&cache_resource->refcnt);
        rte_atomic32_inc(&cache_resource->refcnt);
        if (mlx5_hlist_insert_ex(sh->modify_cmds, &cache_resource->entry,
                                 flow_dv_modify_hdr_resource_match,
                                 (void *)cache_resource)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, EEXIST,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "action exist");
        }
        dev_flow->handle->dvh.modify_hdr = cache_resource;
        DRV_LOG(DEBUG, "new modify-header resource %p: refcnt %d++",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        return 0;
}

/**
 * Get DV flow counter by index.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] idx
 *   mlx5 flow counter index in the container.
 * @param[out] ppool
 *   mlx5 flow counter pool in the container,
 *
 * @return
 *   Pointer to the counter, NULL otherwise.
 */
static struct mlx5_flow_counter *
flow_dv_counter_get_by_idx(struct rte_eth_dev *dev,
                           uint32_t idx,
                           struct mlx5_flow_counter_pool **ppool)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_mng *cmng = &priv->sh->cmng;
        struct mlx5_flow_counter_pool *pool;

        /* Decrease to original index and clear shared bit. */
        idx = (idx - 1) & (MLX5_CNT_SHARED_OFFSET - 1);
        MLX5_ASSERT(idx / MLX5_COUNTERS_PER_POOL < cmng->n);
        pool = cmng->pools[idx / MLX5_COUNTERS_PER_POOL];
        MLX5_ASSERT(pool);
        if (ppool)
                *ppool = pool;
        return MLX5_POOL_GET_CNT(pool, idx % MLX5_COUNTERS_PER_POOL);
}

/**
 * Check the devx counter belongs to the pool.
 *
 * @param[in] pool
 *   Pointer to the counter pool.
 * @param[in] id
 *   The counter devx ID.
 *
 * @return
 *   True if counter belongs to the pool, false otherwise.
 */
static bool
flow_dv_is_counter_in_pool(struct mlx5_flow_counter_pool *pool, int id)
{
        int base = (pool->min_dcs->id / MLX5_COUNTERS_PER_POOL) *
                   MLX5_COUNTERS_PER_POOL;

        if (id >= base && id < base + MLX5_COUNTERS_PER_POOL)
                return true;
        return false;
}

/**
 * Get a pool by devx counter ID.
 *
 * @param[in] cmng
 *   Pointer to the counter management.
 * @param[in] id
 *   The counter devx ID.
 *
 * @return
 *   The counter pool pointer if exists, NULL otherwise,
 */
static struct mlx5_flow_counter_pool *
flow_dv_find_pool_by_id(struct mlx5_flow_counter_mng *cmng, int id)
{
        uint32_t i;
        struct mlx5_flow_counter_pool *pool = NULL;

        rte_spinlock_lock(&cmng->pool_update_sl);
        /* Check last used pool. */
        if (cmng->last_pool_idx != POOL_IDX_INVALID &&
            flow_dv_is_counter_in_pool(cmng->pools[cmng->last_pool_idx], id)) {
                pool = cmng->pools[cmng->last_pool_idx];
                goto out;
        }
        /* ID out of range means no suitable pool in the container. */
        if (id > cmng->max_id || id < cmng->min_id)
                goto out;
        /*
         * Find the pool from the end of the container, since mostly counter
         * ID is sequence increasing, and the last pool should be the needed
         * one.
         */
        i = cmng->n_valid;
        while (i--) {
                struct mlx5_flow_counter_pool *pool_tmp = cmng->pools[i];

                if (flow_dv_is_counter_in_pool(pool_tmp, id)) {
                        pool = pool_tmp;
                        break;
                }
        }
out:
        rte_spinlock_unlock(&cmng->pool_update_sl);
        return pool;
}

/**
 * Resize a counter container.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 *
 * @return
 *   0 on success, otherwise negative errno value and rte_errno is set.
 */
static int
flow_dv_container_resize(struct rte_eth_dev *dev)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_mng *cmng = &priv->sh->cmng;
        void *old_pools = cmng->pools;
        uint32_t resize = cmng->n + MLX5_CNT_CONTAINER_RESIZE;
        uint32_t mem_size = sizeof(struct mlx5_flow_counter_pool *) * resize;
        void *pools = mlx5_malloc(MLX5_MEM_ZERO, mem_size, 0, SOCKET_ID_ANY);

        if (!pools) {
                rte_errno = ENOMEM;
                return -ENOMEM;
        }
        if (old_pools)
                memcpy(pools, old_pools, cmng->n *
                                       sizeof(struct mlx5_flow_counter_pool *));
        cmng->n = resize;
        cmng->pools = pools;
        if (old_pools)
                mlx5_free(old_pools);
        return 0;
}

/**
 * Query a devx flow counter.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] cnt
 *   Index to the flow counter.
 * @param[out] pkts
 *   The statistics value of packets.
 * @param[out] bytes
 *   The statistics value of bytes.
 *
 * @return
 *   0 on success, otherwise a negative errno value and rte_errno is set.
 */
static inline int
_flow_dv_query_count(struct rte_eth_dev *dev, uint32_t counter, uint64_t *pkts,
                     uint64_t *bytes)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_pool *pool = NULL;
        struct mlx5_flow_counter *cnt;
        int offset;

        cnt = flow_dv_counter_get_by_idx(dev, counter, &pool);
        MLX5_ASSERT(pool);
        if (priv->sh->cmng.counter_fallback)
                return mlx5_devx_cmd_flow_counter_query(cnt->dcs_when_active, 0,
                                        0, pkts, bytes, 0, NULL, NULL, 0);
        rte_spinlock_lock(&pool->sl);
        if (!pool->raw) {
                *pkts = 0;
                *bytes = 0;
        } else {
                offset = MLX5_CNT_ARRAY_IDX(pool, cnt);
                *pkts = rte_be_to_cpu_64(pool->raw->data[offset].hits);
                *bytes = rte_be_to_cpu_64(pool->raw->data[offset].bytes);
        }
        rte_spinlock_unlock(&pool->sl);
        return 0;
}

/**
 * Create and initialize a new counter pool.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[out] dcs
 *   The devX counter handle.
 * @param[in] age
 *   Whether the pool is for counter that was allocated for aging.
 * @param[in/out] cont_cur
 *   Pointer to the container pointer, it will be update in pool resize.
 *
 * @return
 *   The pool container pointer on success, NULL otherwise and rte_errno is set.
 */
static struct mlx5_flow_counter_pool *
flow_dv_pool_create(struct rte_eth_dev *dev, struct mlx5_devx_obj *dcs,
                    uint32_t age)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_pool *pool;
        struct mlx5_flow_counter_mng *cmng = &priv->sh->cmng;
        bool fallback = priv->sh->cmng.counter_fallback;
        uint32_t size = sizeof(*pool);

        size += MLX5_COUNTERS_PER_POOL * MLX5_CNT_SIZE;
        size += (!age ? 0 : MLX5_COUNTERS_PER_POOL * MLX5_AGE_SIZE);
        pool = mlx5_malloc(MLX5_MEM_ZERO, size, 0, SOCKET_ID_ANY);
        if (!pool) {
                rte_errno = ENOMEM;
                return NULL;
        }
        pool->raw = NULL;
        pool->is_aged = !!age;
        pool->query_gen = 0;
        pool->min_dcs = dcs;
        rte_spinlock_init(&pool->sl);
        rte_spinlock_init(&pool->csl);
        TAILQ_INIT(&pool->counters[0]);
        TAILQ_INIT(&pool->counters[1]);
        pool->time_of_last_age_check = MLX5_CURR_TIME_SEC;
        rte_spinlock_lock(&cmng->pool_update_sl);
        pool->index = cmng->n_valid;
        if (pool->index == cmng->n && flow_dv_container_resize(dev)) {
                mlx5_free(pool);
                rte_spinlock_unlock(&cmng->pool_update_sl);
                return NULL;
        }
        cmng->pools[pool->index] = pool;
        cmng->n_valid++;
        if (unlikely(fallback)) {
                int base = RTE_ALIGN_FLOOR(dcs->id, MLX5_COUNTERS_PER_POOL);

                if (base < cmng->min_id)
                        cmng->min_id = base;
                if (base > cmng->max_id)
                        cmng->max_id = base + MLX5_COUNTERS_PER_POOL - 1;
                cmng->last_pool_idx = pool->index;
        }
        rte_spinlock_unlock(&cmng->pool_update_sl);
        return pool;
}

/**
 * Prepare a new counter and/or a new counter pool.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[out] cnt_free
 *   Where to put the pointer of a new counter.
 * @param[in] age
 *   Whether the pool is for counter that was allocated for aging.
 *
 * @return
 *   The counter pool pointer and @p cnt_free is set on success,
 *   NULL otherwise and rte_errno is set.
 */
static struct mlx5_flow_counter_pool *
flow_dv_counter_pool_prepare(struct rte_eth_dev *dev,
                             struct mlx5_flow_counter **cnt_free,
                             uint32_t age)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_mng *cmng = &priv->sh->cmng;
        struct mlx5_flow_counter_pool *pool;
        struct mlx5_counters tmp_tq;
        struct mlx5_devx_obj *dcs = NULL;
        struct mlx5_flow_counter *cnt;
        enum mlx5_counter_type cnt_type =
                        age ? MLX5_COUNTER_TYPE_AGE : MLX5_COUNTER_TYPE_ORIGIN;
        bool fallback = priv->sh->cmng.counter_fallback;
        uint32_t i;

        if (fallback) {
                /* bulk_bitmap must be 0 for single counter allocation. */
                dcs = mlx5_devx_cmd_flow_counter_alloc(priv->sh->ctx, 0);
                if (!dcs)
                        return NULL;
                pool = flow_dv_find_pool_by_id(cmng, dcs->id);
                if (!pool) {
                        pool = flow_dv_pool_create(dev, dcs, age);
                        if (!pool) {
                                mlx5_devx_cmd_destroy(dcs);
                                return NULL;
                        }
                }
                i = dcs->id % MLX5_COUNTERS_PER_POOL;
                cnt = MLX5_POOL_GET_CNT(pool, i);
                cnt->pool = pool;
                cnt->dcs_when_free = dcs;
                *cnt_free = cnt;
                return pool;
        }
        dcs = mlx5_devx_cmd_flow_counter_alloc(priv->sh->ctx, 0x4);
        if (!dcs) {
                rte_errno = ENODATA;
                return NULL;
        }
        pool = flow_dv_pool_create(dev, dcs, age);
        if (!pool) {
                mlx5_devx_cmd_destroy(dcs);
                return NULL;
        }
        TAILQ_INIT(&tmp_tq);
        for (i = 1; i < MLX5_COUNTERS_PER_POOL; ++i) {
                cnt = MLX5_POOL_GET_CNT(pool, i);
                cnt->pool = pool;
                TAILQ_INSERT_HEAD(&tmp_tq, cnt, next);
        }
        rte_spinlock_lock(&cmng->csl[cnt_type]);
        TAILQ_CONCAT(&cmng->counters[cnt_type], &tmp_tq, next);
        rte_spinlock_unlock(&cmng->csl[cnt_type]);
        *cnt_free = MLX5_POOL_GET_CNT(pool, 0);
        (*cnt_free)->pool = pool;
        return pool;
}

/**
 * Allocate a flow counter.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] age
 *   Whether the counter was allocated for aging.
 *
 * @return
 *   Index to flow counter on success, 0 otherwise and rte_errno is set.
 */
static uint32_t
flow_dv_counter_alloc(struct rte_eth_dev *dev, uint32_t age)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_pool *pool = NULL;
        struct mlx5_flow_counter *cnt_free = NULL;
        bool fallback = priv->sh->cmng.counter_fallback;
        struct mlx5_flow_counter_mng *cmng = &priv->sh->cmng;
        enum mlx5_counter_type cnt_type =
                        age ? MLX5_COUNTER_TYPE_AGE : MLX5_COUNTER_TYPE_ORIGIN;
        uint32_t cnt_idx;

        if (!priv->config.devx) {
                rte_errno = ENOTSUP;
                return 0;
        }
        /* Get free counters from container. */
        rte_spinlock_lock(&cmng->csl[cnt_type]);
        cnt_free = TAILQ_FIRST(&cmng->counters[cnt_type]);
        if (cnt_free)
                TAILQ_REMOVE(&cmng->counters[cnt_type], cnt_free, next);
        rte_spinlock_unlock(&cmng->csl[cnt_type]);
        if (!cnt_free && !flow_dv_counter_pool_prepare(dev, &cnt_free, age))
                goto err;
        pool = cnt_free->pool;
        if (fallback)
                cnt_free->dcs_when_active = cnt_free->dcs_when_free;
        /* Create a DV counter action only in the first time usage. */
        if (!cnt_free->action) {
                uint16_t offset;
                struct mlx5_devx_obj *dcs;
                int ret;

                if (!fallback) {
                        offset = MLX5_CNT_ARRAY_IDX(pool, cnt_free);
                        dcs = pool->min_dcs;
                } else {
                        offset = 0;
                        dcs = cnt_free->dcs_when_free;
                }
                ret = mlx5_flow_os_create_flow_action_count(dcs->obj, offset,
                                                            &cnt_free->action);
                if (ret) {
                        rte_errno = errno;
                        goto err;
                }
        }
        cnt_idx = MLX5_MAKE_CNT_IDX(pool->index,
                                MLX5_CNT_ARRAY_IDX(pool, cnt_free));
        /* Update the counter reset values. */
        if (_flow_dv_query_count(dev, cnt_idx, &cnt_free->hits,
                                 &cnt_free->bytes))
                goto err;
        if (!fallback && !priv->sh->cmng.query_thread_on)
                /* Start the asynchronous batch query by the host thread. */
                mlx5_set_query_alarm(priv->sh);
        return cnt_idx;
err:
        if (cnt_free) {
                cnt_free->pool = pool;
                if (fallback)
                        cnt_free->dcs_when_free = cnt_free->dcs_when_active;
                rte_spinlock_lock(&cmng->csl[cnt_type]);
                TAILQ_INSERT_TAIL(&cmng->counters[cnt_type], cnt_free, next);
                rte_spinlock_unlock(&cmng->csl[cnt_type]);
        }
        return 0;
}

/**
 * Allocate a shared flow counter.
 *
 * @param[in] ctx
 *   Pointer to the shared counter configuration.
 * @param[in] data
 *   Pointer to save the allocated counter index.
 *
 * @return
 *   Index to flow counter on success, 0 otherwise and rte_errno is set.
 */

static int32_t
flow_dv_counter_alloc_shared_cb(void *ctx, union mlx5_l3t_data *data)
{
        struct mlx5_shared_counter_conf *conf = ctx;
        struct rte_eth_dev *dev = conf->dev;
        struct mlx5_flow_counter *cnt;

        data->dword = flow_dv_counter_alloc(dev, 0);
        data->dword |= MLX5_CNT_SHARED_OFFSET;
        cnt = flow_dv_counter_get_by_idx(dev, data->dword, NULL);
        cnt->shared_info.id = conf->id;
        return 0;
}

/**
 * Get a shared flow counter.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] id
 *   Counter identifier.
 *
 * @return
 *   Index to flow counter on success, 0 otherwise and rte_errno is set.
 */
static uint32_t
flow_dv_counter_get_shared(struct rte_eth_dev *dev, uint32_t id)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_shared_counter_conf conf = {
                .dev = dev,
                .id = id,
        };
        union mlx5_l3t_data data = {
                .dword = 0,
        };

        mlx5_l3t_prepare_entry(priv->sh->cnt_id_tbl, id, &data,
                               flow_dv_counter_alloc_shared_cb, &conf);
        return data.dword;
}

/**
 * Get age param from counter index.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] counter
 *   Index to the counter handler.
 *
 * @return
 *   The aging parameter specified for the counter index.
 */
static struct mlx5_age_param*
flow_dv_counter_idx_get_age(struct rte_eth_dev *dev,
                                uint32_t counter)
{
        struct mlx5_flow_counter *cnt;
        struct mlx5_flow_counter_pool *pool = NULL;

        flow_dv_counter_get_by_idx(dev, counter, &pool);
        counter = (counter - 1) % MLX5_COUNTERS_PER_POOL;
        cnt = MLX5_POOL_GET_CNT(pool, counter);
        return MLX5_CNT_TO_AGE(cnt);
}

/**
 * Remove a flow counter from aged counter list.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] counter
 *   Index to the counter handler.
 * @param[in] cnt
 *   Pointer to the counter handler.
 */
static void
flow_dv_counter_remove_from_age(struct rte_eth_dev *dev,
                                uint32_t counter, struct mlx5_flow_counter *cnt)
{
        struct mlx5_age_info *age_info;
        struct mlx5_age_param *age_param;
        struct mlx5_priv *priv = dev->data->dev_private;
        uint16_t expected = AGE_CANDIDATE;

        age_info = GET_PORT_AGE_INFO(priv);
        age_param = flow_dv_counter_idx_get_age(dev, counter);
        if (!__atomic_compare_exchange_n(&age_param->state, &expected,
                                         AGE_FREE, false, __ATOMIC_RELAXED,
                                         __ATOMIC_RELAXED)) {
                /**
                 * We need the lock even it is age timeout,
                 * since counter may still in process.
                 */
                rte_spinlock_lock(&age_info->aged_sl);
                TAILQ_REMOVE(&age_info->aged_counters, cnt, next);
                rte_spinlock_unlock(&age_info->aged_sl);
                __atomic_store_n(&age_param->state, AGE_FREE, __ATOMIC_RELAXED);
        }
}

/**
 * Release a flow counter.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] counter
 *   Index to the counter handler.
 */
static void
flow_dv_counter_release(struct rte_eth_dev *dev, uint32_t counter)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter_pool *pool = NULL;
        struct mlx5_flow_counter *cnt;
        enum mlx5_counter_type cnt_type;

        if (!counter)
                return;
        cnt = flow_dv_counter_get_by_idx(dev, counter, &pool);
        MLX5_ASSERT(pool);
        if (IS_SHARED_CNT(counter) &&
            mlx5_l3t_clear_entry(priv->sh->cnt_id_tbl, cnt->shared_info.id))
                return;
        if (pool->is_aged)
                flow_dv_counter_remove_from_age(dev, counter, cnt);
        cnt->pool = pool;
        /*
         * Put the counter back to list to be updated in none fallback mode.
         * Currently, we are using two list alternately, while one is in query,
         * add the freed counter to the other list based on the pool query_gen
         * value. After query finishes, add counter the list to the global
         * container counter list. The list changes while query starts. In
         * this case, lock will not be needed as query callback and release
         * function both operate with the different list.
         *
         */
        if (!priv->sh->cmng.counter_fallback) {
                rte_spinlock_lock(&pool->csl);
                TAILQ_INSERT_TAIL(&pool->counters[pool->query_gen], cnt, next);
                rte_spinlock_unlock(&pool->csl);
        } else {
                cnt->dcs_when_free = cnt->dcs_when_active;
                cnt_type = pool->is_aged ? MLX5_COUNTER_TYPE_AGE :
                                           MLX5_COUNTER_TYPE_ORIGIN;
                rte_spinlock_lock(&priv->sh->cmng.csl[cnt_type]);
                TAILQ_INSERT_TAIL(&priv->sh->cmng.counters[cnt_type],
                                  cnt, next);
                rte_spinlock_unlock(&priv->sh->cmng.csl[cnt_type]);
        }
}

/**
 * Verify the @p attributes will be correctly understood by the NIC and store
 * them in the @p flow if everything is correct.
 *
 * @param[in] dev
 *   Pointer to dev struct.
 * @param[in] attributes
 *   Pointer to flow attributes
 * @param[in] external
 *   This flow rule is created by request external to PMD.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   - 0 on success and non root table.
 *   - 1 on success and root table.
 *   - a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate_attributes(struct rte_eth_dev *dev,
                            const struct mlx5_flow_tunnel *tunnel,
                            const struct rte_flow_attr *attributes,
                            struct flow_grp_info grp_info,
                            struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t priority_max = priv->config.flow_prio - 1;
        int ret = 0;

#ifndef HAVE_MLX5DV_DR
        RTE_SET_USED(tunnel);
        RTE_SET_USED(grp_info);
        if (attributes->group)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
                                          NULL,
                                          "groups are not supported");
#else
        uint32_t table = 0;

        ret = mlx5_flow_group_to_table(dev, tunnel, attributes->group, &table,
                                       grp_info, error);
        if (ret)
                return ret;
        if (!table)
                ret = MLX5DV_DR_ACTION_FLAGS_ROOT_LEVEL;
#endif
        if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
            attributes->priority >= priority_max)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
                                          NULL,
                                          "priority out of range");
        if (attributes->transfer) {
                if (!priv->config.dv_esw_en)
                        return rte_flow_error_set
                                (error, ENOTSUP,
                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                 "E-Switch dr is not supported");
                if (!(priv->representor || priv->master))
                        return rte_flow_error_set
                                (error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                 NULL, "E-Switch configuration can only be"
                                 " done by a master or a representor device");
                if (attributes->egress)
                        return rte_flow_error_set
                                (error, ENOTSUP,
                                 RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, attributes,
                                 "egress is not supported");
        }
        if (!(attributes->egress ^ attributes->ingress))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ATTR, NULL,
                                          "must specify exactly one of "
                                          "ingress or egress");
        return ret;
}

/**
 * Internal validation function. For validating both actions and items.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in] items
 *   Pointer to the list of items.
 * @param[in] actions
 *   Pointer to the list of actions.
 * @param[in] external
 *   This flow rule is created by request external to PMD.
 * @param[in] hairpin
 *   Number of hairpin TX actions, 0 means classic flow.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
                 const struct rte_flow_item items[],
                 const struct rte_flow_action actions[],
                 bool external, int hairpin, struct rte_flow_error *error)
{
        int ret;
        uint64_t action_flags = 0;
        uint64_t item_flags = 0;
        uint64_t last_item = 0;
        uint8_t next_protocol = 0xff;
        uint16_t ether_type = 0;
        int actions_n = 0;
        uint8_t item_ipv6_proto = 0;
        const struct rte_flow_item *gre_item = NULL;
        const struct rte_flow_action_raw_decap *decap;
        const struct rte_flow_action_raw_encap *encap;
        const struct rte_flow_action_rss *rss;
        const struct rte_flow_item_tcp nic_tcp_mask = {
                .hdr = {
                        .tcp_flags = 0xFF,
                        .src_port = RTE_BE16(UINT16_MAX),
                        .dst_port = RTE_BE16(UINT16_MAX),
                }
        };
        const struct rte_flow_item_ipv6 nic_ipv6_mask = {
                .hdr = {
                        .src_addr =
                        "\xff\xff\xff\xff\xff\xff\xff\xff"
                        "\xff\xff\xff\xff\xff\xff\xff\xff",
                        .dst_addr =
                        "\xff\xff\xff\xff\xff\xff\xff\xff"
                        "\xff\xff\xff\xff\xff\xff\xff\xff",
                        .vtc_flow = RTE_BE32(0xffffffff),
                        .proto = 0xff,
                        .hop_limits = 0xff,
                },
                .has_frag_ext = 1,
        };
        const struct rte_flow_item_ecpri nic_ecpri_mask = {
                .hdr = {
                        .common = {
                                .u32 =
                                RTE_BE32(((const struct rte_ecpri_common_hdr) {
                                        .type = 0xFF,
                                        }).u32),
                        },
                        .dummy[0] = 0xffffffff,
                },
        };
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *dev_conf = &priv->config;
        uint16_t queue_index = 0xFFFF;
        const struct rte_flow_item_vlan *vlan_m = NULL;
        int16_t rw_act_num = 0;
        uint64_t is_root;
        const struct mlx5_flow_tunnel *tunnel;
        struct flow_grp_info grp_info = {
                .external = !!external,
                .transfer = !!attr->transfer,
                .fdb_def_rule = !!priv->fdb_def_rule,
        };

        if (items == NULL)
                return -1;
        if (is_flow_tunnel_match_rule(dev, attr, items, actions)) {
                tunnel = flow_items_to_tunnel(items);
                action_flags |= MLX5_FLOW_ACTION_TUNNEL_MATCH |
                                MLX5_FLOW_ACTION_DECAP;
        } else if (is_flow_tunnel_steer_rule(dev, attr, items, actions)) {
                tunnel = flow_actions_to_tunnel(actions);
                action_flags |= MLX5_FLOW_ACTION_TUNNEL_SET;
        } else {
                tunnel = NULL;
        }
        grp_info.std_tbl_fix = tunnel_use_standard_attr_group_translate
                                (dev, tunnel, attr, items, actions);
        ret = flow_dv_validate_attributes(dev, tunnel, attr, grp_info, error);
        if (ret < 0)
                return ret;
        is_root = (uint64_t)ret;
        for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
                int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
                int type = items->type;

                if (!mlx5_flow_os_item_supported(type))
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  NULL, "item not supported");
                switch (type) {
                case MLX5_RTE_FLOW_ITEM_TYPE_TUNNEL:
                        if (items[0].type != (typeof(items[0].type))
                                                MLX5_RTE_FLOW_ITEM_TYPE_TUNNEL)
                                return rte_flow_error_set
                                                (error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ITEM,
                                                NULL, "MLX5 private items "
                                                "must be the first");
                        break;
                case RTE_FLOW_ITEM_TYPE_VOID:
                        break;
                case RTE_FLOW_ITEM_TYPE_PORT_ID:
                        ret = flow_dv_validate_item_port_id
                                        (dev, items, attr, item_flags, error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_ITEM_PORT_ID;
                        break;
                case RTE_FLOW_ITEM_TYPE_ETH:
                        ret = mlx5_flow_validate_item_eth(items, item_flags,
                                                          error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
                                             MLX5_FLOW_LAYER_OUTER_L2;
                        if (items->mask != NULL && items->spec != NULL) {
                                ether_type =
                                        ((const struct rte_flow_item_eth *)
                                         items->spec)->type;
                                ether_type &=
                                        ((const struct rte_flow_item_eth *)
                                         items->mask)->type;
                                ether_type = rte_be_to_cpu_16(ether_type);
                        } else {
                                ether_type = 0;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_VLAN:
                        ret = flow_dv_validate_item_vlan(items, item_flags,
                                                         dev, error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
                                             MLX5_FLOW_LAYER_OUTER_VLAN;
                        if (items->mask != NULL && items->spec != NULL) {
                                ether_type =
                                        ((const struct rte_flow_item_vlan *)
                                         items->spec)->inner_type;
                                ether_type &=
                                        ((const struct rte_flow_item_vlan *)
                                         items->mask)->inner_type;
                                ether_type = rte_be_to_cpu_16(ether_type);
                        } else {
                                ether_type = 0;
                        }
                        /* Store outer VLAN mask for of_push_vlan action. */
                        if (!tunnel)
                                vlan_m = items->mask;
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV4:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        ret = flow_dv_validate_item_ipv4(items, item_flags,
                                                         last_item, ether_type,
                                                         error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
                                             MLX5_FLOW_LAYER_OUTER_L3_IPV4;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv4 *)
                             items->mask)->hdr.next_proto_id) {
                                next_protocol =
                                        ((const struct rte_flow_item_ipv4 *)
                                         (items->spec))->hdr.next_proto_id;
                                next_protocol &=
                                        ((const struct rte_flow_item_ipv4 *)
                                         (items->mask))->hdr.next_proto_id;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        ret = mlx5_flow_validate_item_ipv6(items, item_flags,
                                                           last_item,
                                                           ether_type,
                                                           &nic_ipv6_mask,
                                                           error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
                                             MLX5_FLOW_LAYER_OUTER_L3_IPV6;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv6 *)
                             items->mask)->hdr.proto) {
                                item_ipv6_proto =
                                        ((const struct rte_flow_item_ipv6 *)
                                         items->spec)->hdr.proto;
                                next_protocol =
                                        ((const struct rte_flow_item_ipv6 *)
                                         items->spec)->hdr.proto;
                                next_protocol &=
                                        ((const struct rte_flow_item_ipv6 *)
                                         items->mask)->hdr.proto;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
                        ret = flow_dv_validate_item_ipv6_frag_ext(items,
                                                                  item_flags,
                                                                  error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ?
                                        MLX5_FLOW_LAYER_INNER_L3_IPV6_FRAG_EXT :
                                        MLX5_FLOW_LAYER_OUTER_L3_IPV6_FRAG_EXT;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv6_frag_ext *)
                             items->mask)->hdr.next_header) {
                                next_protocol =
                                ((const struct rte_flow_item_ipv6_frag_ext *)
                                 items->spec)->hdr.next_header;
                                next_protocol &=
                                ((const struct rte_flow_item_ipv6_frag_ext *)
                                 items->mask)->hdr.next_header;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_TCP:
                        ret = mlx5_flow_validate_item_tcp
                                                (items, item_flags,
                                                 next_protocol,
                                                 &nic_tcp_mask,
                                                 error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L4_TCP :
                                             MLX5_FLOW_LAYER_OUTER_L4_TCP;
                        break;
                case RTE_FLOW_ITEM_TYPE_UDP:
                        ret = mlx5_flow_validate_item_udp(items, item_flags,
                                                          next_protocol,
                                                          error);
                        if (ret < 0)
                                return ret;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L4_UDP :
                                             MLX5_FLOW_LAYER_OUTER_L4_UDP;
                        break;
                case RTE_FLOW_ITEM_TYPE_GRE:
                        ret = mlx5_flow_validate_item_gre(items, item_flags,
                                                          next_protocol, error);
                        if (ret < 0)
                                return ret;
                        gre_item = items;
                        last_item = MLX5_FLOW_LAYER_GRE;
                        break;
                case RTE_FLOW_ITEM_TYPE_NVGRE:
                        ret = mlx5_flow_validate_item_nvgre(items, item_flags,
                                                            next_protocol,
                                                            error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_NVGRE;
                        break;
                case RTE_FLOW_ITEM_TYPE_GRE_KEY:
                        ret = mlx5_flow_validate_item_gre_key
                                (items, item_flags, gre_item, error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_GRE_KEY;
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN:
                        ret = mlx5_flow_validate_item_vxlan(items, item_flags,
                                                            error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_VXLAN;
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
                        ret = mlx5_flow_validate_item_vxlan_gpe(items,
                                                                item_flags, dev,
                                                                error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_VXLAN_GPE;
                        break;
                case RTE_FLOW_ITEM_TYPE_GENEVE:
                        ret = mlx5_flow_validate_item_geneve(items,
                                                             item_flags, dev,
                                                             error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_GENEVE;
                        break;
                case RTE_FLOW_ITEM_TYPE_MPLS:
                        ret = mlx5_flow_validate_item_mpls(dev, items,
                                                           item_flags,
                                                           last_item, error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_MPLS;
                        break;

                case RTE_FLOW_ITEM_TYPE_MARK:
                        ret = flow_dv_validate_item_mark(dev, items, attr,
                                                         error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_ITEM_MARK;
                        break;
                case RTE_FLOW_ITEM_TYPE_META:
                        ret = flow_dv_validate_item_meta(dev, items, attr,
                                                         error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_ITEM_METADATA;
                        break;
                case RTE_FLOW_ITEM_TYPE_ICMP:
                        ret = mlx5_flow_validate_item_icmp(items, item_flags,
                                                           next_protocol,
                                                           error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_ICMP;
                        break;
                case RTE_FLOW_ITEM_TYPE_ICMP6:
                        ret = mlx5_flow_validate_item_icmp6(items, item_flags,
                                                            next_protocol,
                                                            error);
                        if (ret < 0)
                                return ret;
                        item_ipv6_proto = IPPROTO_ICMPV6;
                        last_item = MLX5_FLOW_LAYER_ICMP6;
                        break;
                case RTE_FLOW_ITEM_TYPE_TAG:
                        ret = flow_dv_validate_item_tag(dev, items,
                                                        attr, error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_ITEM_TAG;
                        break;
                case MLX5_RTE_FLOW_ITEM_TYPE_TAG:
                case MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE:
                        break;
                case RTE_FLOW_ITEM_TYPE_GTP:
                        ret = flow_dv_validate_item_gtp(dev, items, item_flags,
                                                        error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_GTP;
                        break;
                case RTE_FLOW_ITEM_TYPE_ECPRI:
                        /* Capacity will be checked in the translate stage. */
                        ret = mlx5_flow_validate_item_ecpri(items, item_flags,
                                                            last_item,
                                                            ether_type,
                                                            &nic_ecpri_mask,
                                                            error);
                        if (ret < 0)
                                return ret;
                        last_item = MLX5_FLOW_LAYER_ECPRI;
                        break;
                default:
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  NULL, "item not supported");
                }
                item_flags |= last_item;
        }
        for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
                int type = actions->type;

                if (!mlx5_flow_os_action_supported(type))
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "action not supported");
                if (actions_n == MLX5_DV_MAX_NUMBER_OF_ACTIONS)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions, "too many actions");
                switch (type) {
                case RTE_FLOW_ACTION_TYPE_VOID:
                        break;
                case RTE_FLOW_ACTION_TYPE_PORT_ID:
                        ret = flow_dv_validate_action_port_id(dev,
                                                              action_flags,
                                                              actions,
                                                              attr,
                                                              error);
                        if (ret)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_PORT_ID;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_FLAG:
                        ret = flow_dv_validate_action_flag(dev, action_flags,
                                                           attr, error);
                        if (ret < 0)
                                return ret;
                        if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
                                /* Count all modify-header actions as one. */
                                if (!(action_flags &
                                      MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                        ++actions_n;
                                action_flags |= MLX5_FLOW_ACTION_FLAG |
                                                MLX5_FLOW_ACTION_MARK_EXT;
                        } else {
                                action_flags |= MLX5_FLOW_ACTION_FLAG;
                                ++actions_n;
                        }
                        rw_act_num += MLX5_ACT_NUM_SET_MARK;
                        break;
                case RTE_FLOW_ACTION_TYPE_MARK:
                        ret = flow_dv_validate_action_mark(dev, actions,
                                                           action_flags,
                                                           attr, error);
                        if (ret < 0)
                                return ret;
                        if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
                                /* Count all modify-header actions as one. */
                                if (!(action_flags &
                                      MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                        ++actions_n;
                                action_flags |= MLX5_FLOW_ACTION_MARK |
                                                MLX5_FLOW_ACTION_MARK_EXT;
                        } else {
                                action_flags |= MLX5_FLOW_ACTION_MARK;
                                ++actions_n;
                        }
                        rw_act_num += MLX5_ACT_NUM_SET_MARK;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_META:
                        ret = flow_dv_validate_action_set_meta(dev, actions,
                                                               action_flags,
                                                               attr, error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= MLX5_FLOW_ACTION_SET_META;
                        rw_act_num += MLX5_ACT_NUM_SET_META;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_TAG:
                        ret = flow_dv_validate_action_set_tag(dev, actions,
                                                              action_flags,
                                                              attr, error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= MLX5_FLOW_ACTION_SET_TAG;
                        rw_act_num += MLX5_ACT_NUM_SET_TAG;
                        break;
                case RTE_FLOW_ACTION_TYPE_DROP:
                        ret = mlx5_flow_validate_action_drop(action_flags,
                                                             attr, error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_DROP;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_QUEUE:
                        ret = mlx5_flow_validate_action_queue(actions,
                                                              action_flags, dev,
                                                              attr, error);
                        if (ret < 0)
                                return ret;
                        queue_index = ((const struct rte_flow_action_queue *)
                                                        (actions->conf))->index;
                        action_flags |= MLX5_FLOW_ACTION_QUEUE;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_RSS:
                        rss = actions->conf;
                        ret = mlx5_flow_validate_action_rss(actions,
                                                            action_flags, dev,
                                                            attr, item_flags,
                                                            error);
                        if (ret < 0)
                                return ret;
                        if (rss != NULL && rss->queue_num)
                                queue_index = rss->queue[0];
                        action_flags |= MLX5_FLOW_ACTION_RSS;
                        ++actions_n;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_DEFAULT_MISS:
                        ret =
                        mlx5_flow_validate_action_default_miss(action_flags,
                                        attr, error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_DEFAULT_MISS;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_COUNT:
                        ret = flow_dv_validate_action_count(dev, error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_COUNT;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
                        if (flow_dv_validate_action_pop_vlan(dev,
                                                             action_flags,
                                                             actions,
                                                             item_flags, attr,
                                                             error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_OF_POP_VLAN;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
                        ret = flow_dv_validate_action_push_vlan(dev,
                                                                action_flags,
                                                                vlan_m,
                                                                actions, attr,
                                                                error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_OF_PUSH_VLAN;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
                        ret = flow_dv_validate_action_set_vlan_pcp
                                                (action_flags, actions, error);
                        if (ret < 0)
                                return ret;
                        /* Count PCP with push_vlan command. */
                        action_flags |= MLX5_FLOW_ACTION_OF_SET_VLAN_PCP;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
                        ret = flow_dv_validate_action_set_vlan_vid
                                                (item_flags, action_flags,
                                                 actions, error);
                        if (ret < 0)
                                return ret;
                        /* Count VID with push_vlan command. */
                        action_flags |= MLX5_FLOW_ACTION_OF_SET_VLAN_VID;
                        rw_act_num += MLX5_ACT_NUM_MDF_VID;
                        break;
                case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
                case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
                        ret = flow_dv_validate_action_l2_encap(dev,
                                                               action_flags,
                                                               actions, attr,
                                                               error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_ENCAP;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
                case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
                        ret = flow_dv_validate_action_decap(dev, action_flags,
                                                            attr, error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_DECAP;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
                        ret = flow_dv_validate_action_raw_encap_decap
                                (dev, NULL, actions->conf, attr, &action_flags,
                                 &actions_n, error);
                        if (ret < 0)
                                return ret;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
                        decap = actions->conf;
                        while ((++actions)->type == RTE_FLOW_ACTION_TYPE_VOID)
                                ;
                        if (actions->type != RTE_FLOW_ACTION_TYPE_RAW_ENCAP) {
                                encap = NULL;
                                actions--;
                        } else {
                                encap = actions->conf;
                        }
                        ret = flow_dv_validate_action_raw_encap_decap
                                           (dev,
                                            decap ? decap : &empty_decap, encap,
                                            attr, &action_flags, &actions_n,
                                            error);
                        if (ret < 0)
                                return ret;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_MAC_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_MAC_DST:
                        ret = flow_dv_validate_action_modify_mac(action_flags,
                                                                 actions,
                                                                 item_flags,
                                                                 error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_MAC_SRC ?
                                                MLX5_FLOW_ACTION_SET_MAC_SRC :
                                                MLX5_FLOW_ACTION_SET_MAC_DST;
                        /*
                         * Even if the source and destination MAC addresses have
                         * overlap in the header with 4B alignment, the convert
                         * function will handle them separately and 4 SW actions
                         * will be created. And 2 actions will be added each
                         * time no matter how many bytes of address will be set.
                         */
                        rw_act_num += MLX5_ACT_NUM_MDF_MAC;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
                        ret = flow_dv_validate_action_modify_ipv4(action_flags,
                                                                  actions,
                                                                  item_flags,
                                                                  error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC ?
                                                MLX5_FLOW_ACTION_SET_IPV4_SRC :
                                                MLX5_FLOW_ACTION_SET_IPV4_DST;
                        rw_act_num += MLX5_ACT_NUM_MDF_IPV4;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
                        ret = flow_dv_validate_action_modify_ipv6(action_flags,
                                                                  actions,
                                                                  item_flags,
                                                                  error);
                        if (ret < 0)
                                return ret;
                        if (item_ipv6_proto == IPPROTO_ICMPV6)
                                return rte_flow_error_set(error, ENOTSUP,
                                        RTE_FLOW_ERROR_TYPE_ACTION,
                                        actions,
                                        "Can't change header "
                                        "with ICMPv6 proto");
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC ?
                                                MLX5_FLOW_ACTION_SET_IPV6_SRC :
                                                MLX5_FLOW_ACTION_SET_IPV6_DST;
                        rw_act_num += MLX5_ACT_NUM_MDF_IPV6;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
                        ret = flow_dv_validate_action_modify_tp(action_flags,
                                                                actions,
                                                                item_flags,
                                                                error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_TP_SRC ?
                                                MLX5_FLOW_ACTION_SET_TP_SRC :
                                                MLX5_FLOW_ACTION_SET_TP_DST;
                        rw_act_num += MLX5_ACT_NUM_MDF_PORT;
                        break;
                case RTE_FLOW_ACTION_TYPE_DEC_TTL:
                case RTE_FLOW_ACTION_TYPE_SET_TTL:
                        ret = flow_dv_validate_action_modify_ttl(action_flags,
                                                                 actions,
                                                                 item_flags,
                                                                 error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_TTL ?
                                                MLX5_FLOW_ACTION_SET_TTL :
                                                MLX5_FLOW_ACTION_DEC_TTL;
                        rw_act_num += MLX5_ACT_NUM_MDF_TTL;
                        break;
                case RTE_FLOW_ACTION_TYPE_JUMP:
                        ret = flow_dv_validate_action_jump(dev, tunnel, actions,
                                                           action_flags,
                                                           attr, external,
                                                           error);
                        if (ret)
                                return ret;
                        ++actions_n;
                        action_flags |= MLX5_FLOW_ACTION_JUMP;
                        break;
                case RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ:
                case RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ:
                        ret = flow_dv_validate_action_modify_tcp_seq
                                                                (action_flags,
                                                                 actions,
                                                                 item_flags,
                                                                 error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ ?
                                                MLX5_FLOW_ACTION_INC_TCP_SEQ :
                                                MLX5_FLOW_ACTION_DEC_TCP_SEQ;
                        rw_act_num += MLX5_ACT_NUM_MDF_TCPSEQ;
                        break;
                case RTE_FLOW_ACTION_TYPE_INC_TCP_ACK:
                case RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK:
                        ret = flow_dv_validate_action_modify_tcp_ack
                                                                (action_flags,
                                                                 actions,
                                                                 item_flags,
                                                                 error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_INC_TCP_ACK ?
                                                MLX5_FLOW_ACTION_INC_TCP_ACK :
                                                MLX5_FLOW_ACTION_DEC_TCP_ACK;
                        rw_act_num += MLX5_ACT_NUM_MDF_TCPACK;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_MARK:
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_TAG:
                case MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG:
                        rw_act_num += MLX5_ACT_NUM_SET_TAG;
                        break;
                case RTE_FLOW_ACTION_TYPE_METER:
                        ret = mlx5_flow_validate_action_meter(dev,
                                                              action_flags,
                                                              actions, attr,
                                                              error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_METER;
                        ++actions_n;
                        /* Meter action will add one more TAG action. */
                        rw_act_num += MLX5_ACT_NUM_SET_TAG;
                        break;
                case RTE_FLOW_ACTION_TYPE_AGE:
                        ret = flow_dv_validate_action_age(action_flags,
                                                          actions, dev,
                                                          error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_AGE;
                        ++actions_n;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_DSCP:
                        ret = flow_dv_validate_action_modify_ipv4_dscp
                                                         (action_flags,
                                                          actions,
                                                          item_flags,
                                                          error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= MLX5_FLOW_ACTION_SET_IPV4_DSCP;
                        rw_act_num += MLX5_ACT_NUM_SET_DSCP;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
                        ret = flow_dv_validate_action_modify_ipv6_dscp
                                                                (action_flags,
                                                                 actions,
                                                                 item_flags,
                                                                 error);
                        if (ret < 0)
                                return ret;
                        /* Count all modify-header actions as one action. */
                        if (!(action_flags & MLX5_FLOW_MODIFY_HDR_ACTIONS))
                                ++actions_n;
                        action_flags |= MLX5_FLOW_ACTION_SET_IPV6_DSCP;
                        rw_act_num += MLX5_ACT_NUM_SET_DSCP;
                        break;
                case RTE_FLOW_ACTION_TYPE_SAMPLE:
                        ret = flow_dv_validate_action_sample(action_flags,
                                                             actions, dev,
                                                             attr, error);
                        if (ret < 0)
                                return ret;
                        action_flags |= MLX5_FLOW_ACTION_SAMPLE;
                        ++actions_n;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_TUNNEL_SET:
                        if (actions[0].type != (typeof(actions[0].type))
                                MLX5_RTE_FLOW_ACTION_TYPE_TUNNEL_SET)
                                return rte_flow_error_set
                                                (error, EINVAL,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                NULL, "MLX5 private action "
                                                "must be the first");

                        action_flags |= MLX5_FLOW_ACTION_TUNNEL_SET;
                        break;
                default:
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "action not supported");
                }
        }
        /*
         * Validate actions in flow rules
         * - Explicit decap action is prohibited by the tunnel offload API.
         * - Drop action in tunnel steer rule is prohibited by the API.
         * - Application cannot use MARK action because it's value can mask
         *   tunnel default miss nitification.
         * - JUMP in tunnel match rule has no support in current PMD
         *   implementation.
         * - TAG & META are reserved for future uses.
         */
        if (action_flags & MLX5_FLOW_ACTION_TUNNEL_SET) {
                uint64_t bad_actions_mask = MLX5_FLOW_ACTION_DECAP    |
                                            MLX5_FLOW_ACTION_MARK     |
                                            MLX5_FLOW_ACTION_SET_TAG  |
                                            MLX5_FLOW_ACTION_SET_META |
                                            MLX5_FLOW_ACTION_DROP;

                if (action_flags & bad_actions_mask)
                        return rte_flow_error_set
                                        (error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                        "Invalid RTE action in tunnel "
                                        "set decap rule");
                if (!(action_flags & MLX5_FLOW_ACTION_JUMP))
                        return rte_flow_error_set
                                        (error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                        "tunnel set decap rule must terminate "
                                        "with JUMP");
                if (!attr->ingress)
                        return rte_flow_error_set
                                        (error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                        "tunnel flows for ingress traffic only");
        }
        if (action_flags & MLX5_FLOW_ACTION_TUNNEL_MATCH) {
                uint64_t bad_actions_mask = MLX5_FLOW_ACTION_JUMP    |
                                            MLX5_FLOW_ACTION_MARK    |
                                            MLX5_FLOW_ACTION_SET_TAG |
                                            MLX5_FLOW_ACTION_SET_META;

                if (action_flags & bad_actions_mask)
                        return rte_flow_error_set
                                        (error, EINVAL,
                                        RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                        "Invalid RTE action in tunnel "
                                        "set match rule");
        }
        /*
         * Validate the drop action mutual exclusion with other actions.
         * Drop action is mutually-exclusive with any other action, except for
         * Count action.
         */
        if ((action_flags & MLX5_FLOW_ACTION_DROP) &&
            (action_flags & ~(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_COUNT)))
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "Drop action is mutually-exclusive "
                                          "with any other action, except for "
                                          "Count action");
        /* Eswitch has few restrictions on using items and actions */
        if (attr->transfer) {
                if (!mlx5_flow_ext_mreg_supported(dev) &&
                    action_flags & MLX5_FLOW_ACTION_FLAG)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "unsupported action FLAG");
                if (!mlx5_flow_ext_mreg_supported(dev) &&
                    action_flags & MLX5_FLOW_ACTION_MARK)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "unsupported action MARK");
                if (action_flags & MLX5_FLOW_ACTION_QUEUE)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "unsupported action QUEUE");
                if (action_flags & MLX5_FLOW_ACTION_RSS)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "unsupported action RSS");
                if (!(action_flags & MLX5_FLOW_FATE_ESWITCH_ACTIONS))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "no fate action is found");
        } else {
                if (!(action_flags & MLX5_FLOW_FATE_ACTIONS) && attr->ingress)
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "no fate action is found");
        }
        /* Continue validation for Xcap and VLAN actions.*/
        if ((action_flags & (MLX5_FLOW_XCAP_ACTIONS |
                             MLX5_FLOW_VLAN_ACTIONS)) &&
            (queue_index == 0xFFFF ||
             mlx5_rxq_get_type(dev, queue_index) != MLX5_RXQ_TYPE_HAIRPIN)) {
                if ((action_flags & MLX5_FLOW_XCAP_ACTIONS) ==
                    MLX5_FLOW_XCAP_ACTIONS)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "encap and decap "
                                                  "combination aren't supported");
                if (!attr->transfer && attr->ingress) {
                        if (action_flags & MLX5_FLOW_ACTION_ENCAP)
                                return rte_flow_error_set
                                                (error, ENOTSUP,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL, "encap is not supported"
                                                 " for ingress traffic");
                        else if (action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN)
                                return rte_flow_error_set
                                                (error, ENOTSUP,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL, "push VLAN action not "
                                                 "supported for ingress");
                        else if ((action_flags & MLX5_FLOW_VLAN_ACTIONS) ==
                                        MLX5_FLOW_VLAN_ACTIONS)
                                return rte_flow_error_set
                                                (error, ENOTSUP,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL, "no support for "
                                                 "multiple VLAN actions");
                }
        }
        /* Hairpin flow will add one more TAG action. */
        if (hairpin > 0)
                rw_act_num += MLX5_ACT_NUM_SET_TAG;
        /* extra metadata enabled: one more TAG action will be add. */
        if (dev_conf->dv_flow_en &&
            dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
            mlx5_flow_ext_mreg_supported(dev))
                rw_act_num += MLX5_ACT_NUM_SET_TAG;
        if ((uint32_t)rw_act_num >
                        flow_dv_modify_hdr_action_max(dev, is_root)) {
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL, "too many header modify"
                                          " actions to support");
        }
        return 0;
}

/**
 * Internal preparation function. Allocates the DV flow size,
 * this size is constant.
 *
 * @param[in] dev
 *   Pointer to the rte_eth_dev structure.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in] items
 *   Pointer to the list of items.
 * @param[in] actions
 *   Pointer to the list of actions.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   Pointer to mlx5_flow object on success,
 *   otherwise NULL and rte_errno is set.
 */
static struct mlx5_flow *
flow_dv_prepare(struct rte_eth_dev *dev,
                const struct rte_flow_attr *attr __rte_unused,
                const struct rte_flow_item items[] __rte_unused,
                const struct rte_flow_action actions[] __rte_unused,
                struct rte_flow_error *error)
{
        uint32_t handle_idx = 0;
        struct mlx5_flow *dev_flow;
        struct mlx5_flow_handle *dev_handle;
        struct mlx5_priv *priv = dev->data->dev_private;

        /* In case of corrupting the memory. */
        if (priv->flow_idx >= MLX5_NUM_MAX_DEV_FLOWS) {
                rte_flow_error_set(error, ENOSPC,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                   "not free temporary device flow");
                return NULL;
        }
        dev_handle = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW],
                                   &handle_idx);
        if (!dev_handle) {
                rte_flow_error_set(error, ENOMEM,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                   "not enough memory to create flow handle");
                return NULL;
        }
        /* No multi-thread supporting. */
        dev_flow = &((struct mlx5_flow *)priv->inter_flows)[priv->flow_idx++];
        dev_flow->handle = dev_handle;
        dev_flow->handle_idx = handle_idx;
        /*
         * In some old rdma-core releases, before continuing, a check of the
         * length of matching parameter will be done at first. It needs to use
         * the length without misc4 param. If the flow has misc4 support, then
         * the length needs to be adjusted accordingly. Each param member is
         * aligned with a 64B boundary naturally.
         */
        dev_flow->dv.value.size = MLX5_ST_SZ_BYTES(fte_match_param) -
                                  MLX5_ST_SZ_BYTES(fte_match_set_misc4);
        /*
         * The matching value needs to be cleared to 0 before using. In the
         * past, it will be automatically cleared when using rte_*alloc
         * API. The time consumption will be almost the same as before.
         */
        memset(dev_flow->dv.value.buf, 0, MLX5_ST_SZ_BYTES(fte_match_param));
        dev_flow->ingress = attr->ingress;
        dev_flow->dv.transfer = attr->transfer;
        return dev_flow;
}

#ifdef RTE_LIBRTE_MLX5_DEBUG
/**
 * Sanity check for match mask and value. Similar to check_valid_spec() in
 * kernel driver. If unmasked bit is present in value, it returns failure.
 *
 * @param match_mask
 *   pointer to match mask buffer.
 * @param match_value
 *   pointer to match value buffer.
 *
 * @return
 *   0 if valid, -EINVAL otherwise.
 */
static int
flow_dv_check_valid_spec(void *match_mask, void *match_value)
{
        uint8_t *m = match_mask;
        uint8_t *v = match_value;
        unsigned int i;

        for (i = 0; i < MLX5_ST_SZ_BYTES(fte_match_param); ++i) {
                if (v[i] & ~m[i]) {
                        DRV_LOG(ERR,
                                "match_value differs from match_criteria"
                                " %p[%u] != %p[%u]",
                                match_value, i, match_mask, i);
                        return -EINVAL;
                }
        }
        return 0;
}
#endif

/**
 * Add match of ip_version.
 *
 * @param[in] group
 *   Flow group.
 * @param[in] headers_v
 *   Values header pointer.
 * @param[in] headers_m
 *   Masks header pointer.
 * @param[in] ip_version
 *   The IP version to set.
 */
static inline void
flow_dv_set_match_ip_version(uint32_t group,
                             void *headers_v,
                             void *headers_m,
                             uint8_t ip_version)
{
        if (group == 0)
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_version, 0xf);
        else
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_version,
                         ip_version);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version, ip_version);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, 0);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype, 0);
}

/**
 * Add Ethernet item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_eth(void *matcher, void *key,
                           const struct rte_flow_item *item, int inner,
                           uint32_t group)
{
        const struct rte_flow_item_eth *eth_m = item->mask;
        const struct rte_flow_item_eth *eth_v = item->spec;
        const struct rte_flow_item_eth nic_mask = {
                .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
                .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
                .type = RTE_BE16(0xffff),
        };
        void *headers_m;
        void *headers_v;
        char *l24_v;
        unsigned int i;

        if (!eth_v)
                return;
        if (!eth_m)
                eth_m = &nic_mask;
        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m, dmac_47_16),
               &eth_m->dst, sizeof(eth_m->dst));
        /* The value must be in the range of the mask. */
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dmac_47_16);
        for (i = 0; i < sizeof(eth_m->dst); ++i)
                l24_v[i] = eth_m->dst.addr_bytes[i] & eth_v->dst.addr_bytes[i];
        memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m, smac_47_16),
               &eth_m->src, sizeof(eth_m->src));
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, smac_47_16);
        /* The value must be in the range of the mask. */
        for (i = 0; i < sizeof(eth_m->dst); ++i)
                l24_v[i] = eth_m->src.addr_bytes[i] & eth_v->src.addr_bytes[i];
        if (eth_v->type) {
                /* When ethertype is present set mask for tagged VLAN. */
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
                /* Set value for tagged VLAN if ethertype is 802.1Q. */
                if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_VLAN) ||
                    eth_v->type == RTE_BE16(RTE_ETHER_TYPE_QINQ)) {
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag,
                                 1);
                        /* Return here to avoid setting match on ethertype. */
                        return;
                }
        }
        /*
         * HW supports match on one Ethertype, the Ethertype following the last
         * VLAN tag of the packet (see PRM).
         * Set match on ethertype only if ETH header is not followed by VLAN.
         * HW is optimized for IPv4/IPv6. In such cases, avoid setting
         * ethertype, and use ip_version field instead.
         * eCPRI over Ether layer will use type value 0xAEFE.
         */
        if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_IPV4) &&
            eth_m->type == 0xFFFF) {
                flow_dv_set_match_ip_version(group, headers_v, headers_m, 4);
        } else if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_IPV6) &&
                   eth_m->type == 0xFFFF) {
                flow_dv_set_match_ip_version(group, headers_v, headers_m, 6);
        } else {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
                         rte_be_to_cpu_16(eth_m->type));
                l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                     ethertype);
                *(uint16_t *)(l24_v) = eth_m->type & eth_v->type;
        }
}

/**
 * Add VLAN item to matcher and to the value.
 *
 * @param[in, out] dev_flow
 *   Flow descriptor.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow,
                            void *matcher, void *key,
                            const struct rte_flow_item *item,
                            int inner, uint32_t group)
{
        const struct rte_flow_item_vlan *vlan_m = item->mask;
        const struct rte_flow_item_vlan *vlan_v = item->spec;
        void *headers_m;
        void *headers_v;
        uint16_t tci_m;
        uint16_t tci_v;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
                /*
                 * This is workaround, masks are not supported,
                 * and pre-validated.
                 */
                if (vlan_v)
                        dev_flow->handle->vf_vlan.tag =
                                        rte_be_to_cpu_16(vlan_v->tci) & 0x0fff;
        }
        /*
         * When VLAN item exists in flow, mark packet as tagged,
         * even if TCI is not specified.
         */
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
        if (!vlan_v)
                return;
        if (!vlan_m)
                vlan_m = &rte_flow_item_vlan_mask;
        tci_m = rte_be_to_cpu_16(vlan_m->tci);
        tci_v = rte_be_to_cpu_16(vlan_m->tci & vlan_v->tci);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, first_vid, tci_m);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, tci_v);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, first_cfi, tci_m >> 12);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_cfi, tci_v >> 12);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, first_prio, tci_m >> 13);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, tci_v >> 13);
        /*
         * HW is optimized for IPv4/IPv6. In such cases, avoid setting
         * ethertype, and use ip_version field instead.
         */
        if (vlan_v->inner_type == RTE_BE16(RTE_ETHER_TYPE_IPV4) &&
            vlan_m->inner_type == 0xFFFF) {
                flow_dv_set_match_ip_version(group, headers_v, headers_m, 4);
        } else if (vlan_v->inner_type == RTE_BE16(RTE_ETHER_TYPE_IPV6) &&
                   vlan_m->inner_type == 0xFFFF) {
                flow_dv_set_match_ip_version(group, headers_v, headers_m, 6);
        } else {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
                         rte_be_to_cpu_16(vlan_m->inner_type));
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
                         rte_be_to_cpu_16(vlan_m->inner_type &
                                          vlan_v->inner_type));
        }
}

/**
 * Add IPV4 item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[in] inner
 *   Item is inner pattern.
 * @param[in] group
 *   The group to insert the rule.
 */
static void
flow_dv_translate_item_ipv4(void *matcher, void *key,
                            const struct rte_flow_item *item,
                            const uint64_t item_flags,
                            int inner, uint32_t group)
{
        const struct rte_flow_item_ipv4 *ipv4_m = item->mask;
        const struct rte_flow_item_ipv4 *ipv4_v = item->spec;
        const struct rte_flow_item_ipv4 nic_mask = {
                .hdr = {
                        .src_addr = RTE_BE32(0xffffffff),
                        .dst_addr = RTE_BE32(0xffffffff),
                        .type_of_service = 0xff,
                        .next_proto_id = 0xff,
                        .time_to_live = 0xff,
                },
        };
        void *headers_m;
        void *headers_v;
        char *l24_m;
        char *l24_v;
        uint8_t tos;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        flow_dv_set_match_ip_version(group, headers_v, headers_m, 4);
        /*
         * On outer header (which must contains L2), or inner header with L2,
         * set cvlan_tag mask bit to mark this packet as untagged.
         * This should be done even if item->spec is empty.
         */
        if (!inner || item_flags & MLX5_FLOW_LAYER_INNER_L2)
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
        if (!ipv4_v)
                return;
        if (!ipv4_m)
                ipv4_m = &nic_mask;
        l24_m = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m,
                             dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                             dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
        *(uint32_t *)l24_m = ipv4_m->hdr.dst_addr;
        *(uint32_t *)l24_v = ipv4_m->hdr.dst_addr & ipv4_v->hdr.dst_addr;
        l24_m = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m,
                          src_ipv4_src_ipv6.ipv4_layout.ipv4);
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                          src_ipv4_src_ipv6.ipv4_layout.ipv4);
        *(uint32_t *)l24_m = ipv4_m->hdr.src_addr;
        *(uint32_t *)l24_v = ipv4_m->hdr.src_addr & ipv4_v->hdr.src_addr;
        tos = ipv4_m->hdr.type_of_service & ipv4_v->hdr.type_of_service;
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ecn,
                 ipv4_m->hdr.type_of_service);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, tos);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_dscp,
                 ipv4_m->hdr.type_of_service >> 2);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, tos >> 2);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol,
                 ipv4_m->hdr.next_proto_id);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                 ipv4_v->hdr.next_proto_id & ipv4_m->hdr.next_proto_id);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ttl_hoplimit,
                 ipv4_m->hdr.time_to_live);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ttl_hoplimit,
                 ipv4_v->hdr.time_to_live & ipv4_m->hdr.time_to_live);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, frag,
                 !!(ipv4_m->hdr.fragment_offset));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
                 !!(ipv4_v->hdr.fragment_offset & ipv4_m->hdr.fragment_offset));
}

/**
 * Add IPV6 item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] item_flags
 *   Bit-fields that holds the items detected until now.
 * @param[in] inner
 *   Item is inner pattern.
 * @param[in] group
 *   The group to insert the rule.
 */
static void
flow_dv_translate_item_ipv6(void *matcher, void *key,
                            const struct rte_flow_item *item,
                            const uint64_t item_flags,
                            int inner, uint32_t group)
{
        const struct rte_flow_item_ipv6 *ipv6_m = item->mask;
        const struct rte_flow_item_ipv6 *ipv6_v = item->spec;
        const struct rte_flow_item_ipv6 nic_mask = {
                .hdr = {
                        .src_addr =
                                "\xff\xff\xff\xff\xff\xff\xff\xff"
                                "\xff\xff\xff\xff\xff\xff\xff\xff",
                        .dst_addr =
                                "\xff\xff\xff\xff\xff\xff\xff\xff"
                                "\xff\xff\xff\xff\xff\xff\xff\xff",
                        .vtc_flow = RTE_BE32(0xffffffff),
                        .proto = 0xff,
                        .hop_limits = 0xff,
                },
        };
        void *headers_m;
        void *headers_v;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        char *l24_m;
        char *l24_v;
        uint32_t vtc_m;
        uint32_t vtc_v;
        int i;
        int size;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        flow_dv_set_match_ip_version(group, headers_v, headers_m, 6);
        /*
         * On outer header (which must contains L2), or inner header with L2,
         * set cvlan_tag mask bit to mark this packet as untagged.
         * This should be done even if item->spec is empty.
         */
        if (!inner || item_flags & MLX5_FLOW_LAYER_INNER_L2)
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
        if (!ipv6_v)
                return;
        if (!ipv6_m)
                ipv6_m = &nic_mask;
        size = sizeof(ipv6_m->hdr.dst_addr);
        l24_m = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m,
                             dst_ipv4_dst_ipv6.ipv6_layout.ipv6);
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                             dst_ipv4_dst_ipv6.ipv6_layout.ipv6);
        memcpy(l24_m, ipv6_m->hdr.dst_addr, size);
        for (i = 0; i < size; ++i)
                l24_v[i] = l24_m[i] & ipv6_v->hdr.dst_addr[i];
        l24_m = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_m,
                             src_ipv4_src_ipv6.ipv6_layout.ipv6);
        l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                             src_ipv4_src_ipv6.ipv6_layout.ipv6);
        memcpy(l24_m, ipv6_m->hdr.src_addr, size);
        for (i = 0; i < size; ++i)
                l24_v[i] = l24_m[i] & ipv6_v->hdr.src_addr[i];
        /* TOS. */
        vtc_m = rte_be_to_cpu_32(ipv6_m->hdr.vtc_flow);
        vtc_v = rte_be_to_cpu_32(ipv6_m->hdr.vtc_flow & ipv6_v->hdr.vtc_flow);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ecn, vtc_m >> 20);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, vtc_v >> 20);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_dscp, vtc_m >> 22);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, vtc_v >> 22);
        /* Label. */
        if (inner) {
                MLX5_SET(fte_match_set_misc, misc_m, inner_ipv6_flow_label,
                         vtc_m);
                MLX5_SET(fte_match_set_misc, misc_v, inner_ipv6_flow_label,
                         vtc_v);
        } else {
                MLX5_SET(fte_match_set_misc, misc_m, outer_ipv6_flow_label,
                         vtc_m);
                MLX5_SET(fte_match_set_misc, misc_v, outer_ipv6_flow_label,
                         vtc_v);
        }
        /* Protocol. */
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol,
                 ipv6_m->hdr.proto);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                 ipv6_v->hdr.proto & ipv6_m->hdr.proto);
        /* Hop limit. */
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ttl_hoplimit,
                 ipv6_m->hdr.hop_limits);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ttl_hoplimit,
                 ipv6_v->hdr.hop_limits & ipv6_m->hdr.hop_limits);
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, frag,
                 !!(ipv6_m->has_frag_ext));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
                 !!(ipv6_v->has_frag_ext & ipv6_m->has_frag_ext));
}

/**
 * Add IPV6 fragment extension item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_ipv6_frag_ext(void *matcher, void *key,
                                     const struct rte_flow_item *item,
                                     int inner)
{
        const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_ext_m = item->mask;
        const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_ext_v = item->spec;
        const struct rte_flow_item_ipv6_frag_ext nic_mask = {
                .hdr = {
                        .next_header = 0xff,
                        .frag_data = RTE_BE16(0xffff),
                },
        };
        void *headers_m;
        void *headers_v;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        /* IPv6 fragment extension item exists, so packet is IP fragment. */
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, frag, 1);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 1);
        if (!ipv6_frag_ext_v)
                return;
        if (!ipv6_frag_ext_m)
                ipv6_frag_ext_m = &nic_mask;
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol,
                 ipv6_frag_ext_m->hdr.next_header);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                 ipv6_frag_ext_v->hdr.next_header &
                 ipv6_frag_ext_m->hdr.next_header);
}

/**
 * Add TCP item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_tcp(void *matcher, void *key,
                           const struct rte_flow_item *item,
                           int inner)
{
        const struct rte_flow_item_tcp *tcp_m = item->mask;
        const struct rte_flow_item_tcp *tcp_v = item->spec;
        void *headers_m;
        void *headers_v;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xff);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_TCP);
        if (!tcp_v)
                return;
        if (!tcp_m)
                tcp_m = &rte_flow_item_tcp_mask;
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, tcp_sport,
                 rte_be_to_cpu_16(tcp_m->hdr.src_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
                 rte_be_to_cpu_16(tcp_v->hdr.src_port & tcp_m->hdr.src_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, tcp_dport,
                 rte_be_to_cpu_16(tcp_m->hdr.dst_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
                 rte_be_to_cpu_16(tcp_v->hdr.dst_port & tcp_m->hdr.dst_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, tcp_flags,
                 tcp_m->hdr.tcp_flags);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
                 (tcp_v->hdr.tcp_flags & tcp_m->hdr.tcp_flags));
}

/**
 * Add UDP item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_udp(void *matcher, void *key,
                           const struct rte_flow_item *item,
                           int inner)
{
        const struct rte_flow_item_udp *udp_m = item->mask;
        const struct rte_flow_item_udp *udp_v = item->spec;
        void *headers_m;
        void *headers_v;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xff);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
        if (!udp_v)
                return;
        if (!udp_m)
                udp_m = &rte_flow_item_udp_mask;
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_sport,
                 rte_be_to_cpu_16(udp_m->hdr.src_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
                 rte_be_to_cpu_16(udp_v->hdr.src_port & udp_m->hdr.src_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport,
                 rte_be_to_cpu_16(udp_m->hdr.dst_port));
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
                 rte_be_to_cpu_16(udp_v->hdr.dst_port & udp_m->hdr.dst_port));
}

/**
 * Add GRE optional Key item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_gre_key(void *matcher, void *key,
                                   const struct rte_flow_item *item)
{
        const rte_be32_t *key_m = item->mask;
        const rte_be32_t *key_v = item->spec;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);

        /* GRE K bit must be on and should already be validated */
        MLX5_SET(fte_match_set_misc, misc_m, gre_k_present, 1);
        MLX5_SET(fte_match_set_misc, misc_v, gre_k_present, 1);
        if (!key_v)
                return;
        if (!key_m)
                key_m = &gre_key_default_mask;
        MLX5_SET(fte_match_set_misc, misc_m, gre_key_h,
                 rte_be_to_cpu_32(*key_m) >> 8);
        MLX5_SET(fte_match_set_misc, misc_v, gre_key_h,
                 rte_be_to_cpu_32((*key_v) & (*key_m)) >> 8);
        MLX5_SET(fte_match_set_misc, misc_m, gre_key_l,
                 rte_be_to_cpu_32(*key_m) & 0xFF);
        MLX5_SET(fte_match_set_misc, misc_v, gre_key_l,
                 rte_be_to_cpu_32((*key_v) & (*key_m)) & 0xFF);
}

/**
 * Add GRE item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_gre(void *matcher, void *key,
                           const struct rte_flow_item *item,
                           int inner)
{
        const struct rte_flow_item_gre *gre_m = item->mask;
        const struct rte_flow_item_gre *gre_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        struct {
                union {
                        __extension__
                        struct {
                                uint16_t version:3;
                                uint16_t rsvd0:9;
                                uint16_t s_present:1;
                                uint16_t k_present:1;
                                uint16_t rsvd_bit1:1;
                                uint16_t c_present:1;
                        };
                        uint16_t value;
                };
        } gre_crks_rsvd0_ver_m, gre_crks_rsvd0_ver_v;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xff);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_GRE);
        if (!gre_v)
                return;
        if (!gre_m)
                gre_m = &rte_flow_item_gre_mask;
        MLX5_SET(fte_match_set_misc, misc_m, gre_protocol,
                 rte_be_to_cpu_16(gre_m->protocol));
        MLX5_SET(fte_match_set_misc, misc_v, gre_protocol,
                 rte_be_to_cpu_16(gre_v->protocol & gre_m->protocol));
        gre_crks_rsvd0_ver_m.value = rte_be_to_cpu_16(gre_m->c_rsvd0_ver);
        gre_crks_rsvd0_ver_v.value = rte_be_to_cpu_16(gre_v->c_rsvd0_ver);
        MLX5_SET(fte_match_set_misc, misc_m, gre_c_present,
                 gre_crks_rsvd0_ver_m.c_present);
        MLX5_SET(fte_match_set_misc, misc_v, gre_c_present,
                 gre_crks_rsvd0_ver_v.c_present &
                 gre_crks_rsvd0_ver_m.c_present);
        MLX5_SET(fte_match_set_misc, misc_m, gre_k_present,
                 gre_crks_rsvd0_ver_m.k_present);
        MLX5_SET(fte_match_set_misc, misc_v, gre_k_present,
                 gre_crks_rsvd0_ver_v.k_present &
                 gre_crks_rsvd0_ver_m.k_present);
        MLX5_SET(fte_match_set_misc, misc_m, gre_s_present,
                 gre_crks_rsvd0_ver_m.s_present);
        MLX5_SET(fte_match_set_misc, misc_v, gre_s_present,
                 gre_crks_rsvd0_ver_v.s_present &
                 gre_crks_rsvd0_ver_m.s_present);
}

/**
 * Add NVGRE item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_nvgre(void *matcher, void *key,
                             const struct rte_flow_item *item,
                             int inner)
{
        const struct rte_flow_item_nvgre *nvgre_m = item->mask;
        const struct rte_flow_item_nvgre *nvgre_v = item->spec;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        const char *tni_flow_id_m;
        const char *tni_flow_id_v;
        char *gre_key_m;
        char *gre_key_v;
        int size;
        int i;

        /* For NVGRE, GRE header fields must be set with defined values. */
        const struct rte_flow_item_gre gre_spec = {
                .c_rsvd0_ver = RTE_BE16(0x2000),
                .protocol = RTE_BE16(RTE_ETHER_TYPE_TEB)
        };
        const struct rte_flow_item_gre gre_mask = {
                .c_rsvd0_ver = RTE_BE16(0xB000),
                .protocol = RTE_BE16(UINT16_MAX),
        };
        const struct rte_flow_item gre_item = {
                .spec = &gre_spec,
                .mask = &gre_mask,
                .last = NULL,
        };
        flow_dv_translate_item_gre(matcher, key, &gre_item, inner);
        if (!nvgre_v)
                return;
        if (!nvgre_m)
                nvgre_m = &rte_flow_item_nvgre_mask;
        tni_flow_id_m = (const char *)nvgre_m->tni;
        tni_flow_id_v = (const char *)nvgre_v->tni;
        size = sizeof(nvgre_m->tni) + sizeof(nvgre_m->flow_id);
        gre_key_m = MLX5_ADDR_OF(fte_match_set_misc, misc_m, gre_key_h);
        gre_key_v = MLX5_ADDR_OF(fte_match_set_misc, misc_v, gre_key_h);
        memcpy(gre_key_m, tni_flow_id_m, size);
        for (i = 0; i < size; ++i)
                gre_key_v[i] = gre_key_m[i] & tni_flow_id_v[i];
}

/**
 * Add VXLAN item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_vxlan(void *matcher, void *key,
                             const struct rte_flow_item *item,
                             int inner)
{
        const struct rte_flow_item_vxlan *vxlan_m = item->mask;
        const struct rte_flow_item_vxlan *vxlan_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        char *vni_m;
        char *vni_v;
        uint16_t dport;
        int size;
        int i;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        dport = item->type == RTE_FLOW_ITEM_TYPE_VXLAN ?
                MLX5_UDP_PORT_VXLAN : MLX5_UDP_PORT_VXLAN_GPE;
        if (!MLX5_GET16(fte_match_set_lyr_2_4, headers_v, udp_dport)) {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport, 0xFFFF);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, dport);
        }
        if (!vxlan_v)
                return;
        if (!vxlan_m)
                vxlan_m = &rte_flow_item_vxlan_mask;
        size = sizeof(vxlan_m->vni);
        vni_m = MLX5_ADDR_OF(fte_match_set_misc, misc_m, vxlan_vni);
        vni_v = MLX5_ADDR_OF(fte_match_set_misc, misc_v, vxlan_vni);
        memcpy(vni_m, vxlan_m->vni, size);
        for (i = 0; i < size; ++i)
                vni_v[i] = vni_m[i] & vxlan_v->vni[i];
}

/**
 * Add VXLAN-GPE item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */

static void
flow_dv_translate_item_vxlan_gpe(void *matcher, void *key,
                                 const struct rte_flow_item *item, int inner)
{
        const struct rte_flow_item_vxlan_gpe *vxlan_m = item->mask;
        const struct rte_flow_item_vxlan_gpe *vxlan_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc_m =
                MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters_3);
        void *misc_v =
                MLX5_ADDR_OF(fte_match_param, key, misc_parameters_3);
        char *vni_m;
        char *vni_v;
        uint16_t dport;
        int size;
        int i;
        uint8_t flags_m = 0xff;
        uint8_t flags_v = 0xc;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        dport = item->type == RTE_FLOW_ITEM_TYPE_VXLAN ?
                MLX5_UDP_PORT_VXLAN : MLX5_UDP_PORT_VXLAN_GPE;
        if (!MLX5_GET16(fte_match_set_lyr_2_4, headers_v, udp_dport)) {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport, 0xFFFF);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, dport);
        }
        if (!vxlan_v)
                return;
        if (!vxlan_m)
                vxlan_m = &rte_flow_item_vxlan_gpe_mask;
        size = sizeof(vxlan_m->vni);
        vni_m = MLX5_ADDR_OF(fte_match_set_misc3, misc_m, outer_vxlan_gpe_vni);
        vni_v = MLX5_ADDR_OF(fte_match_set_misc3, misc_v, outer_vxlan_gpe_vni);
        memcpy(vni_m, vxlan_m->vni, size);
        for (i = 0; i < size; ++i)
                vni_v[i] = vni_m[i] & vxlan_v->vni[i];
        if (vxlan_m->flags) {
                flags_m = vxlan_m->flags;
                flags_v = vxlan_v->flags;
        }
        MLX5_SET(fte_match_set_misc3, misc_m, outer_vxlan_gpe_flags, flags_m);
        MLX5_SET(fte_match_set_misc3, misc_v, outer_vxlan_gpe_flags, flags_v);
        MLX5_SET(fte_match_set_misc3, misc_m, outer_vxlan_gpe_next_protocol,
                 vxlan_m->protocol);
        MLX5_SET(fte_match_set_misc3, misc_v, outer_vxlan_gpe_next_protocol,
                 vxlan_v->protocol);
}

/**
 * Add Geneve item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */

static void
flow_dv_translate_item_geneve(void *matcher, void *key,
                              const struct rte_flow_item *item, int inner)
{
        const struct rte_flow_item_geneve *geneve_m = item->mask;
        const struct rte_flow_item_geneve *geneve_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        uint16_t dport;
        uint16_t gbhdr_m;
        uint16_t gbhdr_v;
        char *vni_m;
        char *vni_v;
        size_t size, i;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        dport = MLX5_UDP_PORT_GENEVE;
        if (!MLX5_GET16(fte_match_set_lyr_2_4, headers_v, udp_dport)) {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport, 0xFFFF);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, dport);
        }
        if (!geneve_v)
                return;
        if (!geneve_m)
                geneve_m = &rte_flow_item_geneve_mask;
        size = sizeof(geneve_m->vni);
        vni_m = MLX5_ADDR_OF(fte_match_set_misc, misc_m, geneve_vni);
        vni_v = MLX5_ADDR_OF(fte_match_set_misc, misc_v, geneve_vni);
        memcpy(vni_m, geneve_m->vni, size);
        for (i = 0; i < size; ++i)
                vni_v[i] = vni_m[i] & geneve_v->vni[i];
        MLX5_SET(fte_match_set_misc, misc_m, geneve_protocol_type,
                 rte_be_to_cpu_16(geneve_m->protocol));
        MLX5_SET(fte_match_set_misc, misc_v, geneve_protocol_type,
                 rte_be_to_cpu_16(geneve_v->protocol & geneve_m->protocol));
        gbhdr_m = rte_be_to_cpu_16(geneve_m->ver_opt_len_o_c_rsvd0);
        gbhdr_v = rte_be_to_cpu_16(geneve_v->ver_opt_len_o_c_rsvd0);
        MLX5_SET(fte_match_set_misc, misc_m, geneve_oam,
                 MLX5_GENEVE_OAMF_VAL(gbhdr_m));
        MLX5_SET(fte_match_set_misc, misc_v, geneve_oam,
                 MLX5_GENEVE_OAMF_VAL(gbhdr_v) & MLX5_GENEVE_OAMF_VAL(gbhdr_m));
        MLX5_SET(fte_match_set_misc, misc_m, geneve_opt_len,
                 MLX5_GENEVE_OPTLEN_VAL(gbhdr_m));
        MLX5_SET(fte_match_set_misc, misc_v, geneve_opt_len,
                 MLX5_GENEVE_OPTLEN_VAL(gbhdr_v) &
                 MLX5_GENEVE_OPTLEN_VAL(gbhdr_m));
}

/**
 * Add MPLS item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] prev_layer
 *   The protocol layer indicated in previous item.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_mpls(void *matcher, void *key,
                            const struct rte_flow_item *item,
                            uint64_t prev_layer,
                            int inner)
{
        const uint32_t *in_mpls_m = item->mask;
        const uint32_t *in_mpls_v = item->spec;
        uint32_t *out_mpls_m = 0;
        uint32_t *out_mpls_v = 0;
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        void *misc2_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                     misc_parameters_2);
        void *misc2_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters_2);
        void *headers_m = MLX5_ADDR_OF(fte_match_param, matcher, outer_headers);
        void *headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);

        switch (prev_layer) {
        case MLX5_FLOW_LAYER_OUTER_L4_UDP:
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport, 0xffff);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
                         MLX5_UDP_PORT_MPLS);
                break;
        case MLX5_FLOW_LAYER_GRE:
                MLX5_SET(fte_match_set_misc, misc_m, gre_protocol, 0xffff);
                MLX5_SET(fte_match_set_misc, misc_v, gre_protocol,
                         RTE_ETHER_TYPE_MPLS);
                break;
        default:
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xff);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                         IPPROTO_MPLS);
                break;
        }
        if (!in_mpls_v)
                return;
        if (!in_mpls_m)
                in_mpls_m = (const uint32_t *)&rte_flow_item_mpls_mask;
        switch (prev_layer) {
        case MLX5_FLOW_LAYER_OUTER_L4_UDP:
                out_mpls_m =
                        (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2, misc2_m,
                                                 outer_first_mpls_over_udp);
                out_mpls_v =
                        (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2, misc2_v,
                                                 outer_first_mpls_over_udp);
                break;
        case MLX5_FLOW_LAYER_GRE:
                out_mpls_m =
                        (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2, misc2_m,
                                                 outer_first_mpls_over_gre);
                out_mpls_v =
                        (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2, misc2_v,
                                                 outer_first_mpls_over_gre);
                break;
        default:
                /* Inner MPLS not over GRE is not supported. */
                if (!inner) {
                        out_mpls_m =
                                (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2,
                                                         misc2_m,
                                                         outer_first_mpls);
                        out_mpls_v =
                                (uint32_t *)MLX5_ADDR_OF(fte_match_set_misc2,
                                                         misc2_v,
                                                         outer_first_mpls);
                }
                break;
        }
        if (out_mpls_m && out_mpls_v) {
                *out_mpls_m = *in_mpls_m;
                *out_mpls_v = *in_mpls_v & *in_mpls_m;
        }
}

/**
 * Add metadata register item to matcher
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] reg_type
 *   Type of device metadata register
 * @param[in] value
 *   Register value
 * @param[in] mask
 *   Register mask
 */
static void
flow_dv_match_meta_reg(void *matcher, void *key,
                       enum modify_reg reg_type,
                       uint32_t data, uint32_t mask)
{
        void *misc2_m =
                MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters_2);
        void *misc2_v =
                MLX5_ADDR_OF(fte_match_param, key, misc_parameters_2);
        uint32_t temp;

        data &= mask;
        switch (reg_type) {
        case REG_A:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_a, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_a, data);
                break;
        case REG_B:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_b, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_b, data);
                break;
        case REG_C_0:
                /*
                 * The metadata register C0 field might be divided into
                 * source vport index and META item value, we should set
                 * this field according to specified mask, not as whole one.
                 */
                temp = MLX5_GET(fte_match_set_misc2, misc2_m, metadata_reg_c_0);
                temp |= mask;
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_0, temp);
                temp = MLX5_GET(fte_match_set_misc2, misc2_v, metadata_reg_c_0);
                temp &= ~mask;
                temp |= data;
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_0, temp);
                break;
        case REG_C_1:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_1, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_1, data);
                break;
        case REG_C_2:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_2, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_2, data);
                break;
        case REG_C_3:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_3, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_3, data);
                break;
        case REG_C_4:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_4, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_4, data);
                break;
        case REG_C_5:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_5, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_5, data);
                break;
        case REG_C_6:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_6, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_6, data);
                break;
        case REG_C_7:
                MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_7, mask);
                MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_7, data);
                break;
        default:
                MLX5_ASSERT(false);
                break;
        }
}

/**
 * Add MARK item to matcher
 *
 * @param[in] dev
 *   The device to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 */
static void
flow_dv_translate_item_mark(struct rte_eth_dev *dev,
                            void *matcher, void *key,
                            const struct rte_flow_item *item)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_item_mark *mark;
        uint32_t value;
        uint32_t mask;

        mark = item->mask ? (const void *)item->mask :
                            &rte_flow_item_mark_mask;
        mask = mark->id & priv->sh->dv_mark_mask;
        mark = (const void *)item->spec;
        MLX5_ASSERT(mark);
        value = mark->id & priv->sh->dv_mark_mask & mask;
        if (mask) {
                enum modify_reg reg;

                /* Get the metadata register index for the mark. */
                reg = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, NULL);
                MLX5_ASSERT(reg > 0);
                if (reg == REG_C_0) {
                        struct mlx5_priv *priv = dev->data->dev_private;
                        uint32_t msk_c0 = priv->sh->dv_regc0_mask;
                        uint32_t shl_c0 = rte_bsf32(msk_c0);

                        mask &= msk_c0;
                        mask <<= shl_c0;
                        value <<= shl_c0;
                }
                flow_dv_match_meta_reg(matcher, key, reg, value, mask);
        }
}

/**
 * Add META item to matcher
 *
 * @param[in] dev
 *   The devich to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[in] item
 *   Flow pattern to translate.
 */
static void
flow_dv_translate_item_meta(struct rte_eth_dev *dev,
                            void *matcher, void *key,
                            const struct rte_flow_attr *attr,
                            const struct rte_flow_item *item)
{
        const struct rte_flow_item_meta *meta_m;
        const struct rte_flow_item_meta *meta_v;

        meta_m = (const void *)item->mask;
        if (!meta_m)
                meta_m = &rte_flow_item_meta_mask;
        meta_v = (const void *)item->spec;
        if (meta_v) {
                int reg;
                uint32_t value = meta_v->data;
                uint32_t mask = meta_m->data;

                reg = flow_dv_get_metadata_reg(dev, attr, NULL);
                if (reg < 0)
                        return;
                /*
                 * In datapath code there is no endianness
                 * coversions for perfromance reasons, all
                 * pattern conversions are done in rte_flow.
                 */
                value = rte_cpu_to_be_32(value);
                mask = rte_cpu_to_be_32(mask);
                if (reg == REG_C_0) {
                        struct mlx5_priv *priv = dev->data->dev_private;
                        uint32_t msk_c0 = priv->sh->dv_regc0_mask;
                        uint32_t shl_c0 = rte_bsf32(msk_c0);
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
                        uint32_t shr_c0 = __builtin_clz(priv->sh->dv_meta_mask);

                        value >>= shr_c0;
                        mask >>= shr_c0;
#endif
                        value <<= shl_c0;
                        mask <<= shl_c0;
                        MLX5_ASSERT(msk_c0);
                        MLX5_ASSERT(!(~msk_c0 & mask));
                }
                flow_dv_match_meta_reg(matcher, key, reg, value, mask);
        }
}

/**
 * Add vport metadata Reg C0 item to matcher
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] reg
 *   Flow pattern to translate.
 */
static void
flow_dv_translate_item_meta_vport(void *matcher, void *key,
                                  uint32_t value, uint32_t mask)
{
        flow_dv_match_meta_reg(matcher, key, REG_C_0, value, mask);
}

/**
 * Add tag item to matcher
 *
 * @param[in] dev
 *   The devich to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 */
static void
flow_dv_translate_mlx5_item_tag(struct rte_eth_dev *dev,
                                void *matcher, void *key,
                                const struct rte_flow_item *item)
{
        const struct mlx5_rte_flow_item_tag *tag_v = item->spec;
        const struct mlx5_rte_flow_item_tag *tag_m = item->mask;
        uint32_t mask, value;

        MLX5_ASSERT(tag_v);
        value = tag_v->data;
        mask = tag_m ? tag_m->data : UINT32_MAX;
        if (tag_v->id == REG_C_0) {
                struct mlx5_priv *priv = dev->data->dev_private;
                uint32_t msk_c0 = priv->sh->dv_regc0_mask;
                uint32_t shl_c0 = rte_bsf32(msk_c0);

                mask &= msk_c0;
                mask <<= shl_c0;
                value <<= shl_c0;
        }
        flow_dv_match_meta_reg(matcher, key, tag_v->id, value, mask);
}

/**
 * Add TAG item to matcher
 *
 * @param[in] dev
 *   The devich to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 */
static void
flow_dv_translate_item_tag(struct rte_eth_dev *dev,
                           void *matcher, void *key,
                           const struct rte_flow_item *item)
{
        const struct rte_flow_item_tag *tag_v = item->spec;
        const struct rte_flow_item_tag *tag_m = item->mask;
        enum modify_reg reg;

        MLX5_ASSERT(tag_v);
        tag_m = tag_m ? tag_m : &rte_flow_item_tag_mask;
        /* Get the metadata register index for the tag. */
        reg = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, tag_v->index, NULL);
        MLX5_ASSERT(reg > 0);
        flow_dv_match_meta_reg(matcher, key, reg, tag_v->data, tag_m->data);
}

/**
 * Add source vport match to the specified matcher.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] port
 *   Source vport value to match
 * @param[in] mask
 *   Mask
 */
static void
flow_dv_translate_item_source_vport(void *matcher, void *key,
                                    int16_t port, uint16_t mask)
{
        void *misc_m = MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters);

        MLX5_SET(fte_match_set_misc, misc_m, source_port, mask);
        MLX5_SET(fte_match_set_misc, misc_v, source_port, port);
}

/**
 * Translate port-id item to eswitch match on  port-id.
 *
 * @param[in] dev
 *   The devich to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 *
 * @return
 *   0 on success, a negative errno value otherwise.
 */
static int
flow_dv_translate_item_port_id(struct rte_eth_dev *dev, void *matcher,
                               void *key, const struct rte_flow_item *item)
{
        const struct rte_flow_item_port_id *pid_m = item ? item->mask : NULL;
        const struct rte_flow_item_port_id *pid_v = item ? item->spec : NULL;
        struct mlx5_priv *priv;
        uint16_t mask, id;

        mask = pid_m ? pid_m->id : 0xffff;
        id = pid_v ? pid_v->id : dev->data->port_id;
        priv = mlx5_port_to_eswitch_info(id, item == NULL);
        if (!priv)
                return -rte_errno;
        /* Translate to vport field or to metadata, depending on mode. */
        if (priv->vport_meta_mask)
                flow_dv_translate_item_meta_vport(matcher, key,
                                                  priv->vport_meta_tag,
                                                  priv->vport_meta_mask);
        else
                flow_dv_translate_item_source_vport(matcher, key,
                                                    priv->vport_id, mask);
        return 0;
}

/**
 * Add ICMP6 item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_icmp6(void *matcher, void *key,
                              const struct rte_flow_item *item,
                              int inner)
{
        const struct rte_flow_item_icmp6 *icmp6_m = item->mask;
        const struct rte_flow_item_icmp6 *icmp6_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc3_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                     misc_parameters_3);
        void *misc3_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters_3);
        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xFF);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_ICMPV6);
        if (!icmp6_v)
                return;
        if (!icmp6_m)
                icmp6_m = &rte_flow_item_icmp6_mask;
        MLX5_SET(fte_match_set_misc3, misc3_m, icmpv6_type, icmp6_m->type);
        MLX5_SET(fte_match_set_misc3, misc3_v, icmpv6_type,
                 icmp6_v->type & icmp6_m->type);
        MLX5_SET(fte_match_set_misc3, misc3_m, icmpv6_code, icmp6_m->code);
        MLX5_SET(fte_match_set_misc3, misc3_v, icmpv6_code,
                 icmp6_v->code & icmp6_m->code);
}

/**
 * Add ICMP item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_icmp(void *matcher, void *key,
                            const struct rte_flow_item *item,
                            int inner)
{
        const struct rte_flow_item_icmp *icmp_m = item->mask;
        const struct rte_flow_item_icmp *icmp_v = item->spec;
        uint32_t icmp_header_data_m = 0;
        uint32_t icmp_header_data_v = 0;
        void *headers_m;
        void *headers_v;
        void *misc3_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                     misc_parameters_3);
        void *misc3_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters_3);
        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xFF);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_ICMP);
        if (!icmp_v)
                return;
        if (!icmp_m)
                icmp_m = &rte_flow_item_icmp_mask;
        MLX5_SET(fte_match_set_misc3, misc3_m, icmp_type,
                 icmp_m->hdr.icmp_type);
        MLX5_SET(fte_match_set_misc3, misc3_v, icmp_type,
                 icmp_v->hdr.icmp_type & icmp_m->hdr.icmp_type);
        MLX5_SET(fte_match_set_misc3, misc3_m, icmp_code,
                 icmp_m->hdr.icmp_code);
        MLX5_SET(fte_match_set_misc3, misc3_v, icmp_code,
                 icmp_v->hdr.icmp_code & icmp_m->hdr.icmp_code);
        icmp_header_data_m = rte_be_to_cpu_16(icmp_m->hdr.icmp_seq_nb);
        icmp_header_data_m |= rte_be_to_cpu_16(icmp_m->hdr.icmp_ident) << 16;
        if (icmp_header_data_m) {
                icmp_header_data_v = rte_be_to_cpu_16(icmp_v->hdr.icmp_seq_nb);
                icmp_header_data_v |=
                         rte_be_to_cpu_16(icmp_v->hdr.icmp_ident) << 16;
                MLX5_SET(fte_match_set_misc3, misc3_m, icmp_header_data,
                         icmp_header_data_m);
                MLX5_SET(fte_match_set_misc3, misc3_v, icmp_header_data,
                         icmp_header_data_v & icmp_header_data_m);
        }
}

/**
 * Add GTP item to matcher and to the value.
 *
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_gtp(void *matcher, void *key,
                           const struct rte_flow_item *item, int inner)
{
        const struct rte_flow_item_gtp *gtp_m = item->mask;
        const struct rte_flow_item_gtp *gtp_v = item->spec;
        void *headers_m;
        void *headers_v;
        void *misc3_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                     misc_parameters_3);
        void *misc3_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters_3);
        uint16_t dport = RTE_GTPU_UDP_PORT;

        if (inner) {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         inner_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, inner_headers);
        } else {
                headers_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                         outer_headers);
                headers_v = MLX5_ADDR_OF(fte_match_param, key, outer_headers);
        }
        if (!MLX5_GET16(fte_match_set_lyr_2_4, headers_v, udp_dport)) {
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, udp_dport, 0xFFFF);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, dport);
        }
        if (!gtp_v)
                return;
        if (!gtp_m)
                gtp_m = &rte_flow_item_gtp_mask;
        MLX5_SET(fte_match_set_misc3, misc3_m, gtpu_msg_flags,
                 gtp_m->v_pt_rsv_flags);
        MLX5_SET(fte_match_set_misc3, misc3_v, gtpu_msg_flags,
                 gtp_v->v_pt_rsv_flags & gtp_m->v_pt_rsv_flags);
        MLX5_SET(fte_match_set_misc3, misc3_m, gtpu_msg_type, gtp_m->msg_type);
        MLX5_SET(fte_match_set_misc3, misc3_v, gtpu_msg_type,
                 gtp_v->msg_type & gtp_m->msg_type);
        MLX5_SET(fte_match_set_misc3, misc3_m, gtpu_teid,
                 rte_be_to_cpu_32(gtp_m->teid));
        MLX5_SET(fte_match_set_misc3, misc3_v, gtpu_teid,
                 rte_be_to_cpu_32(gtp_v->teid & gtp_m->teid));
}

/**
 * Add eCPRI item to matcher and to the value.
 *
 * @param[in] dev
 *   The devich to configure through.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] samples
 *   Sample IDs to be used in the matching.
 */
static void
flow_dv_translate_item_ecpri(struct rte_eth_dev *dev, void *matcher,
                             void *key, const struct rte_flow_item *item)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_item_ecpri *ecpri_m = item->mask;
        const struct rte_flow_item_ecpri *ecpri_v = item->spec;
        void *misc4_m = MLX5_ADDR_OF(fte_match_param, matcher,
                                     misc_parameters_4);
        void *misc4_v = MLX5_ADDR_OF(fte_match_param, key, misc_parameters_4);
        uint32_t *samples;
        void *dw_m;
        void *dw_v;

        if (!ecpri_v)
                return;
        if (!ecpri_m)
                ecpri_m = &rte_flow_item_ecpri_mask;
        /*
         * Maximal four DW samples are supported in a single matching now.
         * Two are used now for a eCPRI matching:
         * 1. Type: one byte, mask should be 0x00ff0000 in network order
         * 2. ID of a message: one or two bytes, mask 0xffff0000 or 0xff000000
         *    if any.
         */
        if (!ecpri_m->hdr.common.u32)
                return;
        samples = priv->sh->fp[MLX5_FLEX_PARSER_ECPRI_0].ids;
        /* Need to take the whole DW as the mask to fill the entry. */
        dw_m = MLX5_ADDR_OF(fte_match_set_misc4, misc4_m,
                            prog_sample_field_value_0);
        dw_v = MLX5_ADDR_OF(fte_match_set_misc4, misc4_v,
                            prog_sample_field_value_0);
        /* Already big endian (network order) in the header. */
        *(uint32_t *)dw_m = ecpri_m->hdr.common.u32;
        *(uint32_t *)dw_v = ecpri_v->hdr.common.u32;
        /* Sample#0, used for matching type, offset 0. */
        MLX5_SET(fte_match_set_misc4, misc4_m,
                 prog_sample_field_id_0, samples[0]);
        /* It makes no sense to set the sample ID in the mask field. */
        MLX5_SET(fte_match_set_misc4, misc4_v,
                 prog_sample_field_id_0, samples[0]);
        /*
         * Checking if message body part needs to be matched.
         * Some wildcard rules only matching type field should be supported.
         */
        if (ecpri_m->hdr.dummy[0]) {
                switch (ecpri_v->hdr.common.type) {
                case RTE_ECPRI_MSG_TYPE_IQ_DATA:
                case RTE_ECPRI_MSG_TYPE_RTC_CTRL:
                case RTE_ECPRI_MSG_TYPE_DLY_MSR:
                        dw_m = MLX5_ADDR_OF(fte_match_set_misc4, misc4_m,
                                            prog_sample_field_value_1);
                        dw_v = MLX5_ADDR_OF(fte_match_set_misc4, misc4_v,
                                            prog_sample_field_value_1);
                        *(uint32_t *)dw_m = ecpri_m->hdr.dummy[0];
                        *(uint32_t *)dw_v = ecpri_v->hdr.dummy[0];
                        /* Sample#1, to match message body, offset 4. */
                        MLX5_SET(fte_match_set_misc4, misc4_m,
                                 prog_sample_field_id_1, samples[1]);
                        MLX5_SET(fte_match_set_misc4, misc4_v,
                                 prog_sample_field_id_1, samples[1]);
                        break;
                default:
                        /* Others, do not match any sample ID. */
                        break;
                }
        }
}

static uint32_t matcher_zero[MLX5_ST_SZ_DW(fte_match_param)] = { 0 };

#define HEADER_IS_ZERO(match_criteria, headers)                              \
        !(memcmp(MLX5_ADDR_OF(fte_match_param, match_criteria, headers),     \
                 matcher_zero, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \

/**
 * Calculate flow matcher enable bitmap.
 *
 * @param match_criteria
 *   Pointer to flow matcher criteria.
 *
 * @return
 *   Bitmap of enabled fields.
 */
static uint8_t
flow_dv_matcher_enable(uint32_t *match_criteria)
{
        uint8_t match_criteria_enable;

        match_criteria_enable =
                (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
                MLX5_MATCH_CRITERIA_ENABLE_OUTER_BIT;
        match_criteria_enable |=
                (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
                MLX5_MATCH_CRITERIA_ENABLE_MISC_BIT;
        match_criteria_enable |=
                (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
                MLX5_MATCH_CRITERIA_ENABLE_INNER_BIT;
        match_criteria_enable |=
                (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
                MLX5_MATCH_CRITERIA_ENABLE_MISC2_BIT;
        match_criteria_enable |=
                (!HEADER_IS_ZERO(match_criteria, misc_parameters_3)) <<
                MLX5_MATCH_CRITERIA_ENABLE_MISC3_BIT;
        match_criteria_enable |=
                (!HEADER_IS_ZERO(match_criteria, misc_parameters_4)) <<
                MLX5_MATCH_CRITERIA_ENABLE_MISC4_BIT;
        return match_criteria_enable;
}


/**
 * Get a flow table.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] table_id
 *   Table id to use.
 * @param[in] egress
 *   Direction of the table.
 * @param[in] transfer
 *   E-Switch or NIC flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   Returns tables resource based on the index, NULL in case of failed.
 */
static struct mlx5_flow_tbl_resource *
flow_dv_tbl_resource_get(struct rte_eth_dev *dev,
                         uint32_t table_id, uint8_t egress,
                         uint8_t transfer,
                         bool external,
                         const struct mlx5_flow_tunnel *tunnel,
                         uint32_t group_id,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_tbl_resource *tbl;
        union mlx5_flow_tbl_key table_key = {
                {
                        .table_id = table_id,
                        .reserved = 0,
                        .domain = !!transfer,
                        .direction = !!egress,
                }
        };
        struct mlx5_hlist_entry *pos = mlx5_hlist_lookup(sh->flow_tbls,
                                                         table_key.v64);
        struct mlx5_flow_tbl_data_entry *tbl_data;
        uint32_t idx = 0;
        int ret;
        void *domain;

        if (pos) {
                tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry,
                                        entry);
                tbl = &tbl_data->tbl;
                rte_atomic32_inc(&tbl->refcnt);
                return tbl;
        }
        tbl_data = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_JUMP], &idx);
        if (!tbl_data) {
                rte_flow_error_set(error, ENOMEM,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                   NULL,
                                   "cannot allocate flow table data entry");
                return NULL;
        }
        tbl_data->idx = idx;
        tbl_data->tunnel = tunnel;
        tbl_data->group_id = group_id;
        tbl_data->external = external;
        tbl = &tbl_data->tbl;
        pos = &tbl_data->entry;
        if (transfer)
                domain = sh->fdb_domain;
        else if (egress)
                domain = sh->tx_domain;
        else
                domain = sh->rx_domain;
        ret = mlx5_flow_os_create_flow_tbl(domain, table_id, &tbl->obj);
        if (ret) {
                rte_flow_error_set(error, ENOMEM,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                   NULL, "cannot create flow table object");
                mlx5_ipool_free(sh->ipool[MLX5_IPOOL_JUMP], idx);
                return NULL;
        }
        /*
         * No multi-threads now, but still better to initialize the reference
         * count before insert it into the hash list.
         */
        rte_atomic32_init(&tbl->refcnt);
        /* Jump action reference count is initialized here. */
        rte_atomic32_init(&tbl_data->jump.refcnt);
        pos->key = table_key.v64;
        ret = mlx5_hlist_insert(sh->flow_tbls, pos);
        if (ret < 0) {
                rte_flow_error_set(error, -ret,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                   "cannot insert flow table data entry");
                mlx5_flow_os_destroy_flow_tbl(tbl->obj);
                mlx5_ipool_free(sh->ipool[MLX5_IPOOL_JUMP], idx);
        }
        rte_atomic32_inc(&tbl->refcnt);
        return tbl;
}

/**
 * Release a flow table.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] tbl
 *   Table resource to be released.
 *
 * @return
 *   Returns 0 if table was released, else return 1;
 */
static int
flow_dv_tbl_resource_release(struct rte_eth_dev *dev,
                             struct mlx5_flow_tbl_resource *tbl)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_tbl_data_entry *tbl_data =
                container_of(tbl, struct mlx5_flow_tbl_data_entry, tbl);

        if (!tbl)
                return 0;
        if (rte_atomic32_dec_and_test(&tbl->refcnt)) {
                struct mlx5_hlist_entry *pos = &tbl_data->entry;

                mlx5_flow_os_destroy_flow_tbl(tbl->obj);
                tbl->obj = NULL;
                if (is_tunnel_offload_active(dev) && tbl_data->external) {
                        struct mlx5_hlist_entry *he;
                        struct mlx5_hlist *tunnel_grp_hash;
                        struct mlx5_flow_tunnel_hub *thub =
                                                        mlx5_tunnel_hub(dev);
                        union tunnel_tbl_key tunnel_key = {
                                .tunnel_id = tbl_data->tunnel ?
                                                tbl_data->tunnel->tunnel_id : 0,
                                .group = tbl_data->group_id
                        };
                        union mlx5_flow_tbl_key table_key = {
                                .v64 = pos->key
                        };
                        uint32_t table_id = table_key.table_id;

                        tunnel_grp_hash = tbl_data->tunnel ?
                                                tbl_data->tunnel->groups :
                                                thub->groups;
                        he = mlx5_hlist_lookup(tunnel_grp_hash, tunnel_key.val);
                        if (he) {
                                struct tunnel_tbl_entry *tte;
                                tte = container_of(he, typeof(*tte), hash);
                                MLX5_ASSERT(tte->flow_table == table_id);
                                mlx5_hlist_remove(tunnel_grp_hash, he);
                                mlx5_free(tte);
                        }
                        mlx5_flow_id_release(mlx5_tunnel_hub(dev)->table_ids,
                                             tunnel_flow_tbl_to_id(table_id));
                        DRV_LOG(DEBUG,
                                "port %u release table_id %#x tunnel %u group %u",
                                dev->data->port_id, table_id,
                                tbl_data->tunnel ?
                                tbl_data->tunnel->tunnel_id : 0,
                                tbl_data->group_id);
                }
                /* remove the entry from the hash list and free memory. */
                mlx5_hlist_remove(sh->flow_tbls, pos);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_JUMP],
                                tbl_data->idx);
                return 0;
        }
        return 1;
}

/**
 * Register the flow matcher.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] matcher
 *   Pointer to flow matcher.
 * @param[in, out] key
 *   Pointer to flow table key.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_matcher_register(struct rte_eth_dev *dev,
                         struct mlx5_flow_dv_matcher *matcher,
                         union mlx5_flow_tbl_key *key,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_matcher *cache_matcher;
        struct mlx5dv_flow_matcher_attr dv_attr = {
                .type = IBV_FLOW_ATTR_NORMAL,
                .match_mask = (void *)&matcher->mask,
        };
        struct mlx5_flow_tbl_resource *tbl;
        struct mlx5_flow_tbl_data_entry *tbl_data;
        int ret;

        tbl = flow_dv_tbl_resource_get(dev, key->table_id, key->direction,
                                       key->domain, false, NULL, 0, error);
        if (!tbl)
                return -rte_errno;      /* No need to refill the error info */
        tbl_data = container_of(tbl, struct mlx5_flow_tbl_data_entry, tbl);
        /* Lookup from cache. */
        LIST_FOREACH(cache_matcher, &tbl_data->matchers, next) {
                if (matcher->crc == cache_matcher->crc &&
                    matcher->priority == cache_matcher->priority &&
                    !memcmp((const void *)matcher->mask.buf,
                            (const void *)cache_matcher->mask.buf,
                            cache_matcher->mask.size)) {
                        DRV_LOG(DEBUG,
                                "%s group %u priority %hd use %s "
                                "matcher %p: refcnt %d++",
                                key->domain ? "FDB" : "NIC", key->table_id,
                                cache_matcher->priority,
                                key->direction ? "tx" : "rx",
                                (void *)cache_matcher,
                                rte_atomic32_read(&cache_matcher->refcnt));
                        rte_atomic32_inc(&cache_matcher->refcnt);
                        dev_flow->handle->dvh.matcher = cache_matcher;
                        /* old matcher should not make the table ref++. */
                        flow_dv_tbl_resource_release(dev, tbl);
                        return 0;
                }
        }
        /* Register new matcher. */
        cache_matcher = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*cache_matcher), 0,
                                    SOCKET_ID_ANY);
        if (!cache_matcher) {
                flow_dv_tbl_resource_release(dev, tbl);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate matcher memory");
        }
        *cache_matcher = *matcher;
        dv_attr.match_criteria_enable =
                flow_dv_matcher_enable(cache_matcher->mask.buf);
        dv_attr.priority = matcher->priority;
        if (key->direction)
                dv_attr.flags |= IBV_FLOW_ATTR_FLAGS_EGRESS;
        ret = mlx5_flow_os_create_flow_matcher(sh->ctx, &dv_attr, tbl->obj,
                                               &cache_matcher->matcher_object);
        if (ret) {
                mlx5_free(cache_matcher);
#ifdef HAVE_MLX5DV_DR
                flow_dv_tbl_resource_release(dev, tbl);
#endif
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create matcher");
        }
        /* Save the table information */
        cache_matcher->tbl = tbl;
        rte_atomic32_init(&cache_matcher->refcnt);
        /* only matcher ref++, table ref++ already done above in get API. */
        rte_atomic32_inc(&cache_matcher->refcnt);
        LIST_INSERT_HEAD(&tbl_data->matchers, cache_matcher, next);
        dev_flow->handle->dvh.matcher = cache_matcher;
        DRV_LOG(DEBUG, "%s group %u priority %hd new %s matcher %p: refcnt %d",
                key->domain ? "FDB" : "NIC", key->table_id,
                cache_matcher->priority,
                key->direction ? "tx" : "rx", (void *)cache_matcher,
                rte_atomic32_read(&cache_matcher->refcnt));
        return 0;
}

/**
 * Find existing tag resource or create and register a new one.
 *
 * @param dev[in, out]
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] tag_be24
 *   Tag value in big endian then R-shift 8.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_tag_resource_register
                        (struct rte_eth_dev *dev,
                         uint32_t tag_be24,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_tag_resource *cache_resource;
        struct mlx5_hlist_entry *entry;
        int ret;

        /* Lookup a matching resource from cache. */
        entry = mlx5_hlist_lookup(sh->tag_table, (uint64_t)tag_be24);
        if (entry) {
                cache_resource = container_of
                        (entry, struct mlx5_flow_dv_tag_resource, entry);
                rte_atomic32_inc(&cache_resource->refcnt);
                dev_flow->handle->dvh.rix_tag = cache_resource->idx;
                dev_flow->dv.tag_resource = cache_resource;
                DRV_LOG(DEBUG, "cached tag resource %p: refcnt now %d++",
                        (void *)cache_resource,
                        rte_atomic32_read(&cache_resource->refcnt));
                return 0;
        }
        /* Register new resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_TAG],
                                       &dev_flow->handle->dvh.rix_tag);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                          "cannot allocate resource memory");
        cache_resource->entry.key = (uint64_t)tag_be24;
        ret = mlx5_flow_os_create_flow_action_tag(tag_be24,
                                                  &cache_resource->action);
        if (ret) {
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot create action");
        }
        rte_atomic32_init(&cache_resource->refcnt);
        rte_atomic32_inc(&cache_resource->refcnt);
        if (mlx5_hlist_insert(sh->tag_table, &cache_resource->entry)) {
                mlx5_flow_os_destroy_flow_action(cache_resource->action);
                mlx5_free(cache_resource);
                return rte_flow_error_set(error, EEXIST,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL, "cannot insert tag");
        }
        dev_flow->dv.tag_resource = cache_resource;
        DRV_LOG(DEBUG, "new tag resource %p: refcnt now %d++",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        return 0;
}

/**
 * Release the tag.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param tag_idx
 *   Tag index.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_tag_release(struct rte_eth_dev *dev,
                    uint32_t tag_idx)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_tag_resource *tag;

        tag = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_TAG], tag_idx);
        if (!tag)
                return 0;
        DRV_LOG(DEBUG, "port %u tag %p: refcnt %d--",
                dev->data->port_id, (void *)tag,
                rte_atomic32_read(&tag->refcnt));
        if (rte_atomic32_dec_and_test(&tag->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action(tag->action));
                mlx5_hlist_remove(sh->tag_table, &tag->entry);
                DRV_LOG(DEBUG, "port %u tag %p: removed",
                        dev->data->port_id, (void *)tag);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_TAG], tag_idx);
                return 0;
        }
        return 1;
}

/**
 * Translate port ID action to vport.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action
 *   Pointer to the port ID action.
 * @param[out] dst_port_id
 *   The target port ID.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_translate_action_port_id(struct rte_eth_dev *dev,
                                 const struct rte_flow_action *action,
                                 uint32_t *dst_port_id,
                                 struct rte_flow_error *error)
{
        uint32_t port;
        struct mlx5_priv *priv;
        const struct rte_flow_action_port_id *conf =
                        (const struct rte_flow_action_port_id *)action->conf;

        port = conf->original ? dev->data->port_id : conf->id;
        priv = mlx5_port_to_eswitch_info(port, false);
        if (!priv)
                return rte_flow_error_set(error, -rte_errno,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "No eswitch info was found for port");
#ifdef HAVE_MLX5DV_DR_DEVX_PORT
        /*
         * This parameter is transferred to
         * mlx5dv_dr_action_create_dest_ib_port().
         */
        *dst_port_id = priv->dev_port;
#else
        /*
         * Legacy mode, no LAG configurations is supported.
         * This parameter is transferred to
         * mlx5dv_dr_action_create_dest_vport().
         */
        *dst_port_id = priv->vport_id;
#endif
        return 0;
}

/**
 * Create a counter with aging configuration.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[out] count
 *   Pointer to the counter action configuration.
 * @param[in] age
 *   Pointer to the aging action configuration.
 *
 * @return
 *   Index to flow counter on success, 0 otherwise.
 */
static uint32_t
flow_dv_translate_create_counter(struct rte_eth_dev *dev,
                                struct mlx5_flow *dev_flow,
                                const struct rte_flow_action_count *count,
                                const struct rte_flow_action_age *age)
{
        uint32_t counter;
        struct mlx5_age_param *age_param;

        if (count && count->shared)
                counter = flow_dv_counter_get_shared(dev, count->id);
        else
                counter = flow_dv_counter_alloc(dev, !!age);
        if (!counter || age == NULL)
                return counter;
        age_param  = flow_dv_counter_idx_get_age(dev, counter);
        age_param->context = age->context ? age->context :
                (void *)(uintptr_t)(dev_flow->flow_idx);
        age_param->timeout = age->timeout;
        age_param->port_id = dev->data->port_id;
        __atomic_store_n(&age_param->sec_since_last_hit, 0, __ATOMIC_RELAXED);
        __atomic_store_n(&age_param->state, AGE_CANDIDATE, __ATOMIC_RELAXED);
        return counter;
}
/**
 * Add Tx queue matcher
 *
 * @param[in] dev
 *   Pointer to the dev struct.
 * @param[in, out] matcher
 *   Flow matcher.
 * @param[in, out] key
 *   Flow matcher value.
 * @param[in] item
 *   Flow pattern to translate.
 * @param[in] inner
 *   Item is inner pattern.
 */
static void
flow_dv_translate_item_tx_queue(struct rte_eth_dev *dev,
                                void *matcher, void *key,
                                const struct rte_flow_item *item)
{
        const struct mlx5_rte_flow_item_tx_queue *queue_m;
        const struct mlx5_rte_flow_item_tx_queue *queue_v;
        void *misc_m =
                MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters);
        void *misc_v =
                MLX5_ADDR_OF(fte_match_param, key, misc_parameters);
        struct mlx5_txq_ctrl *txq;
        uint32_t queue;


        queue_m = (const void *)item->mask;
        if (!queue_m)
                return;
        queue_v = (const void *)item->spec;
        if (!queue_v)
                return;
        txq = mlx5_txq_get(dev, queue_v->queue);
        if (!txq)
                return;
        queue = txq->obj->sq->id;
        MLX5_SET(fte_match_set_misc, misc_m, source_sqn, queue_m->queue);
        MLX5_SET(fte_match_set_misc, misc_v, source_sqn,
                 queue & queue_m->queue);
        mlx5_txq_release(dev, queue_v->queue);
}

/**
 * Set the hash fields according to the @p flow information.
 *
 * @param[in] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] rss_desc
 *   Pointer to the mlx5_flow_rss_desc.
 */
static void
flow_dv_hashfields_set(struct mlx5_flow *dev_flow,
                       struct mlx5_flow_rss_desc *rss_desc)
{
        uint64_t items = dev_flow->handle->layers;
        int rss_inner = 0;
        uint64_t rss_types = rte_eth_rss_hf_refine(rss_desc->types);

        dev_flow->hash_fields = 0;
#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
        if (rss_desc->level >= 2) {
                dev_flow->hash_fields |= IBV_RX_HASH_INNER;
                rss_inner = 1;
        }
#endif
        if ((rss_inner && (items & MLX5_FLOW_LAYER_INNER_L3_IPV4)) ||
            (!rss_inner && (items & MLX5_FLOW_LAYER_OUTER_L3_IPV4))) {
                if (rss_types & MLX5_IPV4_LAYER_TYPES) {
                        if (rss_types & ETH_RSS_L3_SRC_ONLY)
                                dev_flow->hash_fields |= IBV_RX_HASH_SRC_IPV4;
                        else if (rss_types & ETH_RSS_L3_DST_ONLY)
                                dev_flow->hash_fields |= IBV_RX_HASH_DST_IPV4;
                        else
                                dev_flow->hash_fields |= MLX5_IPV4_IBV_RX_HASH;
                }
        } else if ((rss_inner && (items & MLX5_FLOW_LAYER_INNER_L3_IPV6)) ||
                   (!rss_inner && (items & MLX5_FLOW_LAYER_OUTER_L3_IPV6))) {
                if (rss_types & MLX5_IPV6_LAYER_TYPES) {
                        if (rss_types & ETH_RSS_L3_SRC_ONLY)
                                dev_flow->hash_fields |= IBV_RX_HASH_SRC_IPV6;
                        else if (rss_types & ETH_RSS_L3_DST_ONLY)
                                dev_flow->hash_fields |= IBV_RX_HASH_DST_IPV6;
                        else
                                dev_flow->hash_fields |= MLX5_IPV6_IBV_RX_HASH;
                }
        }
        if ((rss_inner && (items & MLX5_FLOW_LAYER_INNER_L4_UDP)) ||
            (!rss_inner && (items & MLX5_FLOW_LAYER_OUTER_L4_UDP))) {
                if (rss_types & ETH_RSS_UDP) {
                        if (rss_types & ETH_RSS_L4_SRC_ONLY)
                                dev_flow->hash_fields |=
                                                IBV_RX_HASH_SRC_PORT_UDP;
                        else if (rss_types & ETH_RSS_L4_DST_ONLY)
                                dev_flow->hash_fields |=
                                                IBV_RX_HASH_DST_PORT_UDP;
                        else
                                dev_flow->hash_fields |= MLX5_UDP_IBV_RX_HASH;
                }
        } else if ((rss_inner && (items & MLX5_FLOW_LAYER_INNER_L4_TCP)) ||
                   (!rss_inner && (items & MLX5_FLOW_LAYER_OUTER_L4_TCP))) {
                if (rss_types & ETH_RSS_TCP) {
                        if (rss_types & ETH_RSS_L4_SRC_ONLY)
                                dev_flow->hash_fields |=
                                                IBV_RX_HASH_SRC_PORT_TCP;
                        else if (rss_types & ETH_RSS_L4_DST_ONLY)
                                dev_flow->hash_fields |=
                                                IBV_RX_HASH_DST_PORT_TCP;
                        else
                                dev_flow->hash_fields |= MLX5_TCP_IBV_RX_HASH;
                }
        }
}

/**
 * Create an Rx Hash queue.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param[in] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] rss_desc
 *   Pointer to the mlx5_flow_rss_desc.
 * @param[out] hrxq_idx
 *   Hash Rx queue index.
 *
 * @return
 *   The Verbs/DevX object initialised, NULL otherwise and rte_errno is set.
 */
static struct mlx5_hrxq *
flow_dv_handle_rx_queue(struct rte_eth_dev *dev,
                        struct mlx5_flow *dev_flow,
                        struct mlx5_flow_rss_desc *rss_desc,
                        uint32_t *hrxq_idx)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_handle *dh = dev_flow->handle;
        struct mlx5_hrxq *hrxq;

        MLX5_ASSERT(rss_desc->queue_num);
        *hrxq_idx = mlx5_hrxq_get(dev, rss_desc->key, MLX5_RSS_HASH_KEY_LEN,
                                  dev_flow->hash_fields,
                                  rss_desc->queue, rss_desc->queue_num);
        if (!*hrxq_idx) {
                *hrxq_idx = mlx5_hrxq_new
                                (dev, rss_desc->key, MLX5_RSS_HASH_KEY_LEN,
                                 dev_flow->hash_fields,
                                 rss_desc->queue, rss_desc->queue_num,
                                 !!(dh->layers & MLX5_FLOW_LAYER_TUNNEL),
                                 false);
                if (!*hrxq_idx)
                        return NULL;
        }
        hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
                              *hrxq_idx);
        return hrxq;
}

/**
 * Find existing sample resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[in] resource
 *   Pointer to sample resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[in, out] sample_dv_actions
 *   Pointer to sample actions list.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_sample_resource_register(struct rte_eth_dev *dev,
                         const struct rte_flow_attr *attr,
                         struct mlx5_flow_dv_sample_resource *resource,
                         struct mlx5_flow *dev_flow,
                         void **sample_dv_actions,
                         struct rte_flow_error *error)
{
        struct mlx5_flow_dv_sample_resource *cache_resource;
        struct mlx5dv_dr_flow_sampler_attr sampler_attr;
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_tbl_resource *tbl;
        uint32_t idx = 0;
        const uint32_t next_ft_step = 1;
        uint32_t next_ft_id = resource->ft_id + next_ft_step;

        /* Lookup a matching resource from cache. */
        ILIST_FOREACH(sh->ipool[MLX5_IPOOL_SAMPLE], sh->sample_action_list,
                      idx, cache_resource, next) {
                if (resource->ratio == cache_resource->ratio &&
                    resource->ft_type == cache_resource->ft_type &&
                    resource->ft_id == cache_resource->ft_id &&
                    resource->set_action == cache_resource->set_action &&
                    !memcmp((void *)&resource->sample_act,
                            (void *)&cache_resource->sample_act,
                            sizeof(struct mlx5_flow_sub_actions_list))) {
                        DRV_LOG(DEBUG, "sample resource %p: refcnt %d++",
                                (void *)cache_resource,
                                __atomic_load_n(&cache_resource->refcnt,
                                                __ATOMIC_RELAXED));
                        __atomic_fetch_add(&cache_resource->refcnt, 1,
                                           __ATOMIC_RELAXED);
                        dev_flow->handle->dvh.rix_sample = idx;
                        dev_flow->dv.sample_res = cache_resource;
                        return 0;
                }
        }
        /* Register new sample resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_SAMPLE],
                                       &dev_flow->handle->dvh.rix_sample);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        /* Create normal path table level */
        tbl = flow_dv_tbl_resource_get(dev, next_ft_id,
                                        attr->egress, attr->transfer,
                                        dev_flow->external, NULL, 0, error);
        if (!tbl) {
                rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "fail to create normal path table "
                                          "for sample");
                goto error;
        }
        cache_resource->normal_path_tbl = tbl;
        if (resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB) {
                cache_resource->default_miss =
                                mlx5_glue->dr_create_flow_action_default_miss();
                if (!cache_resource->default_miss) {
                        rte_flow_error_set(error, ENOMEM,
                                                RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                                NULL,
                                                "cannot create default miss "
                                                "action");
                        goto error;
                }
                sample_dv_actions[resource->sample_act.actions_num++] =
                                                cache_resource->default_miss;
        }
        /* Create a DR sample action */
        sampler_attr.sample_ratio = cache_resource->ratio;
        sampler_attr.default_next_table = tbl->obj;
        sampler_attr.num_sample_actions = resource->sample_act.actions_num;
        sampler_attr.sample_actions = (struct mlx5dv_dr_action **)
                                                        &sample_dv_actions[0];
        sampler_attr.action = cache_resource->set_action;
        cache_resource->verbs_action =
                mlx5_glue->dr_create_flow_action_sampler(&sampler_attr);
        if (!cache_resource->verbs_action) {
                rte_flow_error_set(error, ENOMEM,
                                        RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                        NULL, "cannot create sample action");
                goto error;
        }
        __atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
        ILIST_INSERT(sh->ipool[MLX5_IPOOL_SAMPLE], &sh->sample_action_list,
                     dev_flow->handle->dvh.rix_sample, cache_resource,
                     next);
        dev_flow->dv.sample_res = cache_resource;
        DRV_LOG(DEBUG, "new sample resource %p: refcnt %d++",
                (void *)cache_resource,
                __atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
        return 0;
error:
        if (cache_resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB) {
                if (cache_resource->default_miss)
                        claim_zero(mlx5_glue->destroy_flow_action
                                (cache_resource->default_miss));
        } else {
                if (cache_resource->sample_idx.rix_hrxq &&
                    !mlx5_hrxq_release(dev,
                                cache_resource->sample_idx.rix_hrxq))
                        cache_resource->sample_idx.rix_hrxq = 0;
                if (cache_resource->sample_idx.rix_tag &&
                    !flow_dv_tag_release(dev,
                                cache_resource->sample_idx.rix_tag))
                        cache_resource->sample_idx.rix_tag = 0;
                if (cache_resource->sample_idx.cnt) {
                        flow_dv_counter_release(dev,
                                cache_resource->sample_idx.cnt);
                        cache_resource->sample_idx.cnt = 0;
                }
        }
        if (cache_resource->normal_path_tbl)
                flow_dv_tbl_resource_release(dev,
                                cache_resource->normal_path_tbl);
        mlx5_ipool_free(sh->ipool[MLX5_IPOOL_SAMPLE],
                                dev_flow->handle->dvh.rix_sample);
        dev_flow->handle->dvh.rix_sample = 0;
        return -rte_errno;
}

/**
 * Find existing destination array resource or create and register a new one.
 *
 * @param[in, out] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] attr
 *   Attributes of flow that includes this item.
 * @param[in] resource
 *   Pointer to destination array resource.
 * @parm[in, out] dev_flow
 *   Pointer to the dev_flow.
 * @param[out] error
 *   pointer to error structure.
 *
 * @return
 *   0 on success otherwise -errno and errno is set.
 */
static int
flow_dv_dest_array_resource_register(struct rte_eth_dev *dev,
                         const struct rte_flow_attr *attr,
                         struct mlx5_flow_dv_dest_array_resource *resource,
                         struct mlx5_flow *dev_flow,
                         struct rte_flow_error *error)
{
        struct mlx5_flow_dv_dest_array_resource *cache_resource;
        struct mlx5dv_dr_action_dest_attr *dest_attr[MLX5_MAX_DEST_NUM] = { 0 };
        struct mlx5dv_dr_action_dest_reformat dest_reformat[MLX5_MAX_DEST_NUM];
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_sub_actions_list *sample_act;
        struct mlx5dv_dr_domain *domain;
        uint32_t idx = 0;

        /* Lookup a matching resource from cache. */
        ILIST_FOREACH(sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                      sh->dest_array_list,
                      idx, cache_resource, next) {
                if (resource->num_of_dest == cache_resource->num_of_dest &&
                    resource->ft_type == cache_resource->ft_type &&
                    !memcmp((void *)cache_resource->sample_act,
                            (void *)resource->sample_act,
                           (resource->num_of_dest *
                           sizeof(struct mlx5_flow_sub_actions_list)))) {
                        DRV_LOG(DEBUG, "dest array resource %p: refcnt %d++",
                                (void *)cache_resource,
                                __atomic_load_n(&cache_resource->refcnt,
                                                __ATOMIC_RELAXED));
                        __atomic_fetch_add(&cache_resource->refcnt, 1,
                                           __ATOMIC_RELAXED);
                        dev_flow->handle->dvh.rix_dest_array = idx;
                        dev_flow->dv.dest_array_res = cache_resource;
                        return 0;
                }
        }
        /* Register new destination array resource. */
        cache_resource = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                                       &dev_flow->handle->dvh.rix_dest_array);
        if (!cache_resource)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "cannot allocate resource memory");
        *cache_resource = *resource;
        if (attr->transfer)
                domain = sh->fdb_domain;
        else if (attr->ingress)
                domain = sh->rx_domain;
        else
                domain = sh->tx_domain;
        for (idx = 0; idx < resource->num_of_dest; idx++) {
                dest_attr[idx] = (struct mlx5dv_dr_action_dest_attr *)
                                 mlx5_malloc(MLX5_MEM_ZERO,
                                 sizeof(struct mlx5dv_dr_action_dest_attr),
                                 0, SOCKET_ID_ANY);
                if (!dest_attr[idx]) {
                        rte_flow_error_set(error, ENOMEM,
                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                           NULL,
                                           "cannot allocate resource memory");
                        goto error;
                }
                dest_attr[idx]->type = MLX5DV_DR_ACTION_DEST;
                sample_act = &resource->sample_act[idx];
                if (sample_act->action_flags == MLX5_FLOW_ACTION_QUEUE) {
                        dest_attr[idx]->dest = sample_act->dr_queue_action;
                } else if (sample_act->action_flags ==
                          (MLX5_FLOW_ACTION_PORT_ID | MLX5_FLOW_ACTION_ENCAP)) {
                        dest_attr[idx]->type = MLX5DV_DR_ACTION_DEST_REFORMAT;
                        dest_attr[idx]->dest_reformat = &dest_reformat[idx];
                        dest_attr[idx]->dest_reformat->reformat =
                                        sample_act->dr_encap_action;
                        dest_attr[idx]->dest_reformat->dest =
                                        sample_act->dr_port_id_action;
                } else if (sample_act->action_flags ==
                           MLX5_FLOW_ACTION_PORT_ID) {
                        dest_attr[idx]->dest = sample_act->dr_port_id_action;
                }
        }
        /* create a dest array actioin */
        cache_resource->action = mlx5_glue->dr_create_flow_action_dest_array
                                                (domain,
                                                 cache_resource->num_of_dest,
                                                 dest_attr);
        if (!cache_resource->action) {
                rte_flow_error_set(error, ENOMEM,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                   NULL,
                                   "cannot create destination array action");
                goto error;
        }
        __atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
        ILIST_INSERT(sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                     &sh->dest_array_list,
                     dev_flow->handle->dvh.rix_dest_array, cache_resource,
                     next);
        dev_flow->dv.dest_array_res = cache_resource;
        DRV_LOG(DEBUG, "new destination array resource %p: refcnt %d++",
                (void *)cache_resource,
                __atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
        for (idx = 0; idx < resource->num_of_dest; idx++)
                mlx5_free(dest_attr[idx]);
        return 0;
error:
        for (idx = 0; idx < resource->num_of_dest; idx++) {
                struct mlx5_flow_sub_actions_idx *act_res =
                                        &cache_resource->sample_idx[idx];
                if (act_res->rix_hrxq &&
                    !mlx5_hrxq_release(dev,
                                act_res->rix_hrxq))
                        act_res->rix_hrxq = 0;
                if (act_res->rix_encap_decap &&
                        !flow_dv_encap_decap_resource_release(dev,
                                act_res->rix_encap_decap))
                        act_res->rix_encap_decap = 0;
                if (act_res->rix_port_id_action &&
                        !flow_dv_port_id_action_resource_release(dev,
                                act_res->rix_port_id_action))
                        act_res->rix_port_id_action = 0;
                if (dest_attr[idx])
                        mlx5_free(dest_attr[idx]);
        }

        mlx5_ipool_free(sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                                dev_flow->handle->dvh.rix_dest_array);
        dev_flow->handle->dvh.rix_dest_array = 0;
        return -rte_errno;
}

/**
 * Convert Sample action to DV specification.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in] action
 *   Pointer to action structure.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in, out] num_of_dest
 *   Pointer to the num of destination.
 * @param[in, out] sample_actions
 *   Pointer to sample actions list.
 * @param[in, out] res
 *   Pointer to sample resource.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_translate_action_sample(struct rte_eth_dev *dev,
                                const struct rte_flow_action *action,
                                struct mlx5_flow *dev_flow,
                                const struct rte_flow_attr *attr,
                                uint32_t *num_of_dest,
                                void **sample_actions,
                                struct mlx5_flow_dv_sample_resource *res,
                                struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        const struct rte_flow_action_sample *sample_action;
        const struct rte_flow_action *sub_actions;
        const struct rte_flow_action_queue *queue;
        struct mlx5_flow_sub_actions_list *sample_act;
        struct mlx5_flow_sub_actions_idx *sample_idx;
        struct mlx5_flow_rss_desc *rss_desc = &((struct mlx5_flow_rss_desc *)
                                              priv->rss_desc)
                                              [!!priv->flow_nested_idx];
        uint64_t action_flags = 0;

        sample_act = &res->sample_act;
        sample_idx = &res->sample_idx;
        sample_action = (const struct rte_flow_action_sample *)action->conf;
        res->ratio = sample_action->ratio;
        sub_actions = sample_action->actions;
        for (; sub_actions->type != RTE_FLOW_ACTION_TYPE_END; sub_actions++) {
                int type = sub_actions->type;
                uint32_t pre_rix = 0;
                void *pre_r;
                switch (type) {
                case RTE_FLOW_ACTION_TYPE_QUEUE:
                {
                        struct mlx5_hrxq *hrxq;
                        uint32_t hrxq_idx;

                        queue = sub_actions->conf;
                        rss_desc->queue_num = 1;
                        rss_desc->queue[0] = queue->index;
                        hrxq = flow_dv_handle_rx_queue(dev, dev_flow,
                                        rss_desc, &hrxq_idx);
                        if (!hrxq)
                                return rte_flow_error_set
                                        (error, rte_errno,
                                         RTE_FLOW_ERROR_TYPE_ACTION,
                                         NULL,
                                         "cannot create fate queue");
                        sample_act->dr_queue_action = hrxq->action;
                        sample_idx->rix_hrxq = hrxq_idx;
                        sample_actions[sample_act->actions_num++] =
                                                hrxq->action;
                        (*num_of_dest)++;
                        action_flags |= MLX5_FLOW_ACTION_QUEUE;
                        if (action_flags & MLX5_FLOW_ACTION_MARK)
                                dev_flow->handle->rix_hrxq = hrxq_idx;
                        dev_flow->handle->fate_action =
                                        MLX5_FLOW_FATE_QUEUE;
                        break;
                }
                case RTE_FLOW_ACTION_TYPE_MARK:
                {
                        uint32_t tag_be = mlx5_flow_mark_set
                                (((const struct rte_flow_action_mark *)
                                (sub_actions->conf))->id);

                        dev_flow->handle->mark = 1;
                        pre_rix = dev_flow->handle->dvh.rix_tag;
                        /* Save the mark resource before sample */
                        pre_r = dev_flow->dv.tag_resource;
                        if (flow_dv_tag_resource_register(dev, tag_be,
                                                  dev_flow, error))
                                return -rte_errno;
                        MLX5_ASSERT(dev_flow->dv.tag_resource);
                        sample_act->dr_tag_action =
                                dev_flow->dv.tag_resource->action;
                        sample_idx->rix_tag =
                                dev_flow->handle->dvh.rix_tag;
                        sample_actions[sample_act->actions_num++] =
                                                sample_act->dr_tag_action;
                        /* Recover the mark resource after sample */
                        dev_flow->dv.tag_resource = pre_r;
                        dev_flow->handle->dvh.rix_tag = pre_rix;
                        action_flags |= MLX5_FLOW_ACTION_MARK;
                        break;
                }
                case RTE_FLOW_ACTION_TYPE_COUNT:
                {
                        uint32_t counter;

                        counter = flow_dv_translate_create_counter(dev,
                                        dev_flow, sub_actions->conf, 0);
                        if (!counter)
                                return rte_flow_error_set
                                                (error, rte_errno,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL,
                                                 "cannot create counter"
                                                 " object.");
                        sample_idx->cnt = counter;
                        sample_act->dr_cnt_action =
                                  (flow_dv_counter_get_by_idx(dev,
                                  counter, NULL))->action;
                        sample_actions[sample_act->actions_num++] =
                                                sample_act->dr_cnt_action;
                        action_flags |= MLX5_FLOW_ACTION_COUNT;
                        break;
                }
                case RTE_FLOW_ACTION_TYPE_PORT_ID:
                {
                        struct mlx5_flow_dv_port_id_action_resource
                                        port_id_resource;
                        uint32_t port_id = 0;

                        memset(&port_id_resource, 0, sizeof(port_id_resource));
                        /* Save the port id resource before sample */
                        pre_rix = dev_flow->handle->rix_port_id_action;
                        pre_r = dev_flow->dv.port_id_action;
                        if (flow_dv_translate_action_port_id(dev, sub_actions,
                                                             &port_id, error))
                                return -rte_errno;
                        port_id_resource.port_id = port_id;
                        if (flow_dv_port_id_action_resource_register
                            (dev, &port_id_resource, dev_flow, error))
                                return -rte_errno;
                        sample_act->dr_port_id_action =
                                dev_flow->dv.port_id_action->action;
                        sample_idx->rix_port_id_action =
                                dev_flow->handle->rix_port_id_action;
                        sample_actions[sample_act->actions_num++] =
                                                sample_act->dr_port_id_action;
                        /* Recover the port id resource after sample */
                        dev_flow->dv.port_id_action = pre_r;
                        dev_flow->handle->rix_port_id_action = pre_rix;
                        (*num_of_dest)++;
                        action_flags |= MLX5_FLOW_ACTION_PORT_ID;
                        break;
                }
                case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
                        /* Save the encap resource before sample */
                        pre_rix = dev_flow->handle->dvh.rix_encap_decap;
                        pre_r = dev_flow->dv.encap_decap;
                        if (flow_dv_create_action_l2_encap(dev, sub_actions,
                                                           dev_flow,
                                                           attr->transfer,
                                                           error))
                                return -rte_errno;
                        sample_act->dr_encap_action =
                                dev_flow->dv.encap_decap->action;
                        sample_idx->rix_encap_decap =
                                dev_flow->handle->dvh.rix_encap_decap;
                        sample_actions[sample_act->actions_num++] =
                                                sample_act->dr_encap_action;
                        /* Recover the encap resource after sample */
                        dev_flow->dv.encap_decap = pre_r;
                        dev_flow->handle->dvh.rix_encap_decap = pre_rix;
                        action_flags |= MLX5_FLOW_ACTION_ENCAP;
                        break;
                default:
                        return rte_flow_error_set(error, EINVAL,
                                RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                NULL,
                                "Not support for sampler action");
                }
        }
        sample_act->action_flags = action_flags;
        res->ft_id = dev_flow->dv.group;
        if (attr->transfer) {
                union {
                        uint32_t action_in[MLX5_ST_SZ_DW(set_action_in)];
                        uint64_t set_action;
                } action_ctx = { .set_action = 0 };

                res->ft_type = MLX5DV_FLOW_TABLE_TYPE_FDB;
                MLX5_SET(set_action_in, action_ctx.action_in, action_type,
                         MLX5_MODIFICATION_TYPE_SET);
                MLX5_SET(set_action_in, action_ctx.action_in, field,
                         MLX5_MODI_META_REG_C_0);
                MLX5_SET(set_action_in, action_ctx.action_in, data,
                         priv->vport_meta_tag);
                res->set_action = action_ctx.set_action;
        } else if (attr->ingress) {
                res->ft_type = MLX5DV_FLOW_TABLE_TYPE_NIC_RX;
        }
        return 0;
}

/**
 * Convert Sample action to DV specification.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] dev_flow
 *   Pointer to the mlx5_flow.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in] num_of_dest
 *   The num of destination.
 * @param[in, out] res
 *   Pointer to sample resource.
 * @param[in, out] mdest_res
 *   Pointer to destination array resource.
 * @param[in] sample_actions
 *   Pointer to sample path actions list.
 * @param[in] action_flags
 *   Holds the actions detected until now.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_create_action_sample(struct rte_eth_dev *dev,
                             struct mlx5_flow *dev_flow,
                             const struct rte_flow_attr *attr,
                             uint32_t num_of_dest,
                             struct mlx5_flow_dv_sample_resource *res,
                             struct mlx5_flow_dv_dest_array_resource *mdest_res,
                             void **sample_actions,
                             uint64_t action_flags,
                             struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        /* update normal path action resource into last index of array */
        uint32_t dest_index = MLX5_MAX_DEST_NUM - 1;
        struct mlx5_flow_sub_actions_list *sample_act =
                                        &mdest_res->sample_act[dest_index];
        struct mlx5_flow_rss_desc *rss_desc = &((struct mlx5_flow_rss_desc *)
                                              priv->rss_desc)
                                              [!!priv->flow_nested_idx];
        uint32_t normal_idx = 0;
        struct mlx5_hrxq *hrxq;
        uint32_t hrxq_idx;

        if (num_of_dest > 1) {
                if (sample_act->action_flags & MLX5_FLOW_ACTION_QUEUE) {
                        /* Handle QP action for mirroring */
                        hrxq = flow_dv_handle_rx_queue(dev, dev_flow,
                                                       rss_desc, &hrxq_idx);
                        if (!hrxq)
                                return rte_flow_error_set
                                     (error, rte_errno,
                                      RTE_FLOW_ERROR_TYPE_ACTION,
                                      NULL,
                                      "cannot create rx queue");
                        normal_idx++;
                        mdest_res->sample_idx[dest_index].rix_hrxq = hrxq_idx;
                        sample_act->dr_queue_action = hrxq->action;
                        if (action_flags & MLX5_FLOW_ACTION_MARK)
                                dev_flow->handle->rix_hrxq = hrxq_idx;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_QUEUE;
                }
                if (sample_act->action_flags & MLX5_FLOW_ACTION_ENCAP) {
                        normal_idx++;
                        mdest_res->sample_idx[dest_index].rix_encap_decap =
                                dev_flow->handle->dvh.rix_encap_decap;
                        sample_act->dr_encap_action =
                                dev_flow->dv.encap_decap->action;
                }
                if (sample_act->action_flags & MLX5_FLOW_ACTION_PORT_ID) {
                        normal_idx++;
                        mdest_res->sample_idx[dest_index].rix_port_id_action =
                                dev_flow->handle->rix_port_id_action;
                        sample_act->dr_port_id_action =
                                dev_flow->dv.port_id_action->action;
                }
                sample_act->actions_num = normal_idx;
                /* update sample action resource into first index of array */
                mdest_res->ft_type = res->ft_type;
                memcpy(&mdest_res->sample_idx[0], &res->sample_idx,
                                sizeof(struct mlx5_flow_sub_actions_idx));
                memcpy(&mdest_res->sample_act[0], &res->sample_act,
                                sizeof(struct mlx5_flow_sub_actions_list));
                mdest_res->num_of_dest = num_of_dest;
                if (flow_dv_dest_array_resource_register(dev, attr, mdest_res,
                                                         dev_flow, error))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "can't create sample "
                                                  "action");
        } else {
                if (flow_dv_sample_resource_register(dev, attr, res, dev_flow,
                                                     sample_actions, error))
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL,
                                                  "can't create sample action");
        }
        return 0;
}

/**
 * Fill the flow with DV spec, lock free
 * (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 * @param[in, out] dev_flow
 *   Pointer to the sub flow.
 * @param[in] attr
 *   Pointer to the flow attributes.
 * @param[in] items
 *   Pointer to the list of items.
 * @param[in] actions
 *   Pointer to the list of actions.
 * @param[out] error
 *   Pointer to the error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
__flow_dv_translate(struct rte_eth_dev *dev,
                    struct mlx5_flow *dev_flow,
                    const struct rte_flow_attr *attr,
                    const struct rte_flow_item items[],
                    const struct rte_flow_action actions[],
                    struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *dev_conf = &priv->config;
        struct rte_flow *flow = dev_flow->flow;
        struct mlx5_flow_handle *handle = dev_flow->handle;
        struct mlx5_flow_rss_desc *rss_desc = &((struct mlx5_flow_rss_desc *)
                                              priv->rss_desc)
                                              [!!priv->flow_nested_idx];
        uint64_t item_flags = 0;
        uint64_t last_item = 0;
        uint64_t action_flags = 0;
        uint64_t priority = attr->priority;
        struct mlx5_flow_dv_matcher matcher = {
                .mask = {
                        .size = sizeof(matcher.mask.buf) -
                                MLX5_ST_SZ_BYTES(fte_match_set_misc4),
                },
        };
        int actions_n = 0;
        bool actions_end = false;
        union {
                struct mlx5_flow_dv_modify_hdr_resource res;
                uint8_t len[sizeof(struct mlx5_flow_dv_modify_hdr_resource) +
                            sizeof(struct mlx5_modification_cmd) *
                            (MLX5_MAX_MODIFY_NUM + 1)];
        } mhdr_dummy;
        struct mlx5_flow_dv_modify_hdr_resource *mhdr_res = &mhdr_dummy.res;
        const struct rte_flow_action_count *count = NULL;
        const struct rte_flow_action_age *age = NULL;
        union flow_dv_attr flow_attr = { .attr = 0 };
        uint32_t tag_be;
        union mlx5_flow_tbl_key tbl_key;
        uint32_t modify_action_position = UINT32_MAX;
        void *match_mask = matcher.mask.buf;
        void *match_value = dev_flow->dv.value.buf;
        uint8_t next_protocol = 0xff;
        struct rte_vlan_hdr vlan = { 0 };
        struct mlx5_flow_dv_dest_array_resource mdest_res;
        struct mlx5_flow_dv_sample_resource sample_res;
        void *sample_actions[MLX5_DV_MAX_NUMBER_OF_ACTIONS] = {0};
        struct mlx5_flow_sub_actions_list *sample_act;
        uint32_t sample_act_pos = UINT32_MAX;
        uint32_t num_of_dest = 0;
        int tmp_actions_n = 0;
        uint32_t table;
        int ret = 0;
        const struct mlx5_flow_tunnel *tunnel;
        struct flow_grp_info grp_info = {
                .external = !!dev_flow->external,
                .transfer = !!attr->transfer,
                .fdb_def_rule = !!priv->fdb_def_rule,
        };

        memset(&mdest_res, 0, sizeof(struct mlx5_flow_dv_dest_array_resource));
        memset(&sample_res, 0, sizeof(struct mlx5_flow_dv_sample_resource));
        mhdr_res->ft_type = attr->egress ? MLX5DV_FLOW_TABLE_TYPE_NIC_TX :
                                           MLX5DV_FLOW_TABLE_TYPE_NIC_RX;
        /* update normal path action resource into last index of array */
        sample_act = &mdest_res.sample_act[MLX5_MAX_DEST_NUM - 1];
        tunnel = is_flow_tunnel_match_rule(dev, attr, items, actions) ?
                 flow_items_to_tunnel(items) :
                 is_flow_tunnel_steer_rule(dev, attr, items, actions) ?
                 flow_actions_to_tunnel(actions) :
                 dev_flow->tunnel ? dev_flow->tunnel : NULL;
        mhdr_res->ft_type = attr->egress ? MLX5DV_FLOW_TABLE_TYPE_NIC_TX :
                                           MLX5DV_FLOW_TABLE_TYPE_NIC_RX;
        grp_info.std_tbl_fix = tunnel_use_standard_attr_group_translate
                                (dev, tunnel, attr, items, actions);
        ret = mlx5_flow_group_to_table(dev, tunnel, attr->group, &table,
                                       grp_info, error);
        if (ret)
                return ret;
        dev_flow->dv.group = table;
        if (attr->transfer)
                mhdr_res->ft_type = MLX5DV_FLOW_TABLE_TYPE_FDB;
        if (priority == MLX5_FLOW_PRIO_RSVD)
                priority = dev_conf->flow_prio - 1;
        /* number of actions must be set to 0 in case of dirty stack. */
        mhdr_res->actions_num = 0;
        if (is_flow_tunnel_match_rule(dev, attr, items, actions)) {
                /*
                 * do not add decap action if match rule drops packet
                 * HW rejects rules with decap & drop
                 */
                bool add_decap = true;
                const struct rte_flow_action *ptr = actions;
                struct mlx5_flow_tbl_resource *tbl;

                for (; ptr->type != RTE_FLOW_ACTION_TYPE_END; ptr++) {
                        if (ptr->type == RTE_FLOW_ACTION_TYPE_DROP) {
                                add_decap = false;
                                break;
                        }
                }
                if (add_decap) {
                        if (flow_dv_create_action_l2_decap(dev, dev_flow,
                                                           attr->transfer,
                                                           error))
                                return -rte_errno;
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        action_flags |= MLX5_FLOW_ACTION_DECAP;
                }
                /*
                 * bind table_id with <group, table> for tunnel match rule.
                 * Tunnel set rule establishes that bind in JUMP action handler.
                 * Required for scenario when application creates tunnel match
                 * rule before tunnel set rule.
                 */
                tbl = flow_dv_tbl_resource_get(dev, table, attr->egress,
                                               attr->transfer,
                                               !!dev_flow->external, tunnel,
                                               attr->group, error);
                if (!tbl)
                        return rte_flow_error_set
                               (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
                               actions, "cannot register tunnel group");
        }
        for (; !actions_end ; actions++) {
                const struct rte_flow_action_queue *queue;
                const struct rte_flow_action_rss *rss;
                const struct rte_flow_action *action = actions;
                const uint8_t *rss_key;
                const struct rte_flow_action_meter *mtr;
                struct mlx5_flow_tbl_resource *tbl;
                uint32_t port_id = 0;
                struct mlx5_flow_dv_port_id_action_resource port_id_resource;
                int action_type = actions->type;
                const struct rte_flow_action *found_action = NULL;
                struct mlx5_flow_meter *fm = NULL;
                uint32_t jump_group = 0;

                if (!mlx5_flow_os_action_supported(action_type))
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "action not supported");
                switch (action_type) {
                case MLX5_RTE_FLOW_ACTION_TYPE_TUNNEL_SET:
                        action_flags |= MLX5_FLOW_ACTION_TUNNEL_SET;
                        break;
                case RTE_FLOW_ACTION_TYPE_VOID:
                        break;
                case RTE_FLOW_ACTION_TYPE_PORT_ID:
                        if (flow_dv_translate_action_port_id(dev, action,
                                                             &port_id, error))
                                return -rte_errno;
                        port_id_resource.port_id = port_id;
                        MLX5_ASSERT(!handle->rix_port_id_action);
                        if (flow_dv_port_id_action_resource_register
                            (dev, &port_id_resource, dev_flow, error))
                                return -rte_errno;
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.port_id_action->action;
                        action_flags |= MLX5_FLOW_ACTION_PORT_ID;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_PORT_ID;
                        sample_act->action_flags |= MLX5_FLOW_ACTION_PORT_ID;
                        num_of_dest++;
                        break;
                case RTE_FLOW_ACTION_TYPE_FLAG:
                        action_flags |= MLX5_FLOW_ACTION_FLAG;
                        dev_flow->handle->mark = 1;
                        if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
                                struct rte_flow_action_mark mark = {
                                        .id = MLX5_FLOW_MARK_DEFAULT,
                                };

                                if (flow_dv_convert_action_mark(dev, &mark,
                                                                mhdr_res,
                                                                error))
                                        return -rte_errno;
                                action_flags |= MLX5_FLOW_ACTION_MARK_EXT;
                                break;
                        }
                        tag_be = mlx5_flow_mark_set(MLX5_FLOW_MARK_DEFAULT);
                        /*
                         * Only one FLAG or MARK is supported per device flow
                         * right now. So the pointer to the tag resource must be
                         * zero before the register process.
                         */
                        MLX5_ASSERT(!handle->dvh.rix_tag);
                        if (flow_dv_tag_resource_register(dev, tag_be,
                                                          dev_flow, error))
                                return -rte_errno;
                        MLX5_ASSERT(dev_flow->dv.tag_resource);
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.tag_resource->action;
                        break;
                case RTE_FLOW_ACTION_TYPE_MARK:
                        action_flags |= MLX5_FLOW_ACTION_MARK;
                        dev_flow->handle->mark = 1;
                        if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
                                const struct rte_flow_action_mark *mark =
                                        (const struct rte_flow_action_mark *)
                                                actions->conf;

                                if (flow_dv_convert_action_mark(dev, mark,
                                                                mhdr_res,
                                                                error))
                                        return -rte_errno;
                                action_flags |= MLX5_FLOW_ACTION_MARK_EXT;
                                break;
                        }
                        /* Fall-through */
                case MLX5_RTE_FLOW_ACTION_TYPE_MARK:
                        /* Legacy (non-extensive) MARK action. */
                        tag_be = mlx5_flow_mark_set
                              (((const struct rte_flow_action_mark *)
                               (actions->conf))->id);
                        MLX5_ASSERT(!handle->dvh.rix_tag);
                        if (flow_dv_tag_resource_register(dev, tag_be,
                                                          dev_flow, error))
                                return -rte_errno;
                        MLX5_ASSERT(dev_flow->dv.tag_resource);
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.tag_resource->action;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_META:
                        if (flow_dv_convert_action_set_meta
                                (dev, mhdr_res, attr,
                                 (const struct rte_flow_action_set_meta *)
                                  actions->conf, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_META;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_TAG:
                        if (flow_dv_convert_action_set_tag
                                (dev, mhdr_res,
                                 (const struct rte_flow_action_set_tag *)
                                  actions->conf, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_TAG;
                        break;
                case RTE_FLOW_ACTION_TYPE_DROP:
                        action_flags |= MLX5_FLOW_ACTION_DROP;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_DROP;
                        break;
                case RTE_FLOW_ACTION_TYPE_QUEUE:
                        queue = actions->conf;
                        rss_desc->queue_num = 1;
                        rss_desc->queue[0] = queue->index;
                        action_flags |= MLX5_FLOW_ACTION_QUEUE;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_QUEUE;
                        sample_act->action_flags |= MLX5_FLOW_ACTION_QUEUE;
                        num_of_dest++;
                        break;
                case RTE_FLOW_ACTION_TYPE_RSS:
                        rss = actions->conf;
                        memcpy(rss_desc->queue, rss->queue,
                               rss->queue_num * sizeof(uint16_t));
                        rss_desc->queue_num = rss->queue_num;
                        /* NULL RSS key indicates default RSS key. */
                        rss_key = !rss->key ? rss_hash_default_key : rss->key;
                        memcpy(rss_desc->key, rss_key, MLX5_RSS_HASH_KEY_LEN);
                        /*
                         * rss->level and rss.types should be set in advance
                         * when expanding items for RSS.
                         */
                        action_flags |= MLX5_FLOW_ACTION_RSS;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_QUEUE;
                        break;
                case RTE_FLOW_ACTION_TYPE_AGE:
                case RTE_FLOW_ACTION_TYPE_COUNT:
                        if (!dev_conf->devx) {
                                return rte_flow_error_set
                                              (error, ENOTSUP,
                                               RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                               NULL,
                                               "count action not supported");
                        }
                        /* Save information first, will apply later. */
                        if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT)
                                count = action->conf;
                        else
                                age = action->conf;
                        action_flags |= MLX5_FLOW_ACTION_COUNT;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
                        dev_flow->dv.actions[actions_n++] =
                                                priv->sh->pop_vlan_action;
                        action_flags |= MLX5_FLOW_ACTION_OF_POP_VLAN;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
                        if (!(action_flags &
                              MLX5_FLOW_ACTION_OF_SET_VLAN_VID))
                                flow_dev_get_vlan_info_from_items(items, &vlan);
                        vlan.eth_proto = rte_be_to_cpu_16
                             ((((const struct rte_flow_action_of_push_vlan *)
                                                   actions->conf)->ethertype));
                        found_action = mlx5_flow_find_action
                                        (actions + 1,
                                         RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID);
                        if (found_action)
                                mlx5_update_vlan_vid_pcp(found_action, &vlan);
                        found_action = mlx5_flow_find_action
                                        (actions + 1,
                                         RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP);
                        if (found_action)
                                mlx5_update_vlan_vid_pcp(found_action, &vlan);
                        if (flow_dv_create_action_push_vlan
                                            (dev, attr, &vlan, dev_flow, error))
                                return -rte_errno;
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.push_vlan_res->action;
                        action_flags |= MLX5_FLOW_ACTION_OF_PUSH_VLAN;
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
                        /* of_vlan_push action handled this action */
                        MLX5_ASSERT(action_flags &
                                    MLX5_FLOW_ACTION_OF_PUSH_VLAN);
                        break;
                case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
                        if (action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN)
                                break;
                        flow_dev_get_vlan_info_from_items(items, &vlan);
                        mlx5_update_vlan_vid_pcp(actions, &vlan);
                        /* If no VLAN push - this is a modify header action */
                        if (flow_dv_convert_action_modify_vlan_vid
                                                (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_OF_SET_VLAN_VID;
                        break;
                case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
                case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
                        if (flow_dv_create_action_l2_encap(dev, actions,
                                                           dev_flow,
                                                           attr->transfer,
                                                           error))
                                return -rte_errno;
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        action_flags |= MLX5_FLOW_ACTION_ENCAP;
                        if (action_flags & MLX5_FLOW_ACTION_SAMPLE)
                                sample_act->action_flags |=
                                                        MLX5_FLOW_ACTION_ENCAP;
                        break;
                case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
                case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
                        if (flow_dv_create_action_l2_decap(dev, dev_flow,
                                                           attr->transfer,
                                                           error))
                                return -rte_errno;
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        action_flags |= MLX5_FLOW_ACTION_DECAP;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
                        /* Handle encap with preceding decap. */
                        if (action_flags & MLX5_FLOW_ACTION_DECAP) {
                                if (flow_dv_create_action_raw_encap
                                        (dev, actions, dev_flow, attr, error))
                                        return -rte_errno;
                                dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        } else {
                                /* Handle encap without preceding decap. */
                                if (flow_dv_create_action_l2_encap
                                    (dev, actions, dev_flow, attr->transfer,
                                     error))
                                        return -rte_errno;
                                dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        }
                        action_flags |= MLX5_FLOW_ACTION_ENCAP;
                        if (action_flags & MLX5_FLOW_ACTION_SAMPLE)
                                sample_act->action_flags |=
                                                        MLX5_FLOW_ACTION_ENCAP;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
                        while ((++action)->type == RTE_FLOW_ACTION_TYPE_VOID)
                                ;
                        if (action->type != RTE_FLOW_ACTION_TYPE_RAW_ENCAP) {
                                if (flow_dv_create_action_l2_decap
                                    (dev, dev_flow, attr->transfer, error))
                                        return -rte_errno;
                                dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.encap_decap->action;
                        }
                        /* If decap is followed by encap, handle it at encap. */
                        action_flags |= MLX5_FLOW_ACTION_DECAP;
                        break;
                case RTE_FLOW_ACTION_TYPE_JUMP:
                        jump_group = ((const struct rte_flow_action_jump *)
                                                        action->conf)->group;
                        grp_info.std_tbl_fix = 0;
                        ret = mlx5_flow_group_to_table(dev, tunnel,
                                                       jump_group,
                                                       &table,
                                                       grp_info, error);
                        if (ret)
                                return ret;
                        tbl = flow_dv_tbl_resource_get(dev, table, attr->egress,
                                                       attr->transfer,
                                                       !!dev_flow->external,
                                                       tunnel, jump_group,
                                                       error);
                        if (!tbl)
                                return rte_flow_error_set
                                                (error, errno,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL,
                                                 "cannot create jump action.");
                        if (flow_dv_jump_tbl_resource_register
                            (dev, tbl, dev_flow, error)) {
                                flow_dv_tbl_resource_release(dev, tbl);
                                return rte_flow_error_set
                                                (error, errno,
                                                 RTE_FLOW_ERROR_TYPE_ACTION,
                                                 NULL,
                                                 "cannot create jump action.");
                        }
                        dev_flow->dv.actions[actions_n++] =
                                        dev_flow->dv.jump->action;
                        action_flags |= MLX5_FLOW_ACTION_JUMP;
                        dev_flow->handle->fate_action = MLX5_FLOW_FATE_JUMP;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_MAC_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_MAC_DST:
                        if (flow_dv_convert_action_modify_mac
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_MAC_SRC ?
                                        MLX5_FLOW_ACTION_SET_MAC_SRC :
                                        MLX5_FLOW_ACTION_SET_MAC_DST;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
                        if (flow_dv_convert_action_modify_ipv4
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC ?
                                        MLX5_FLOW_ACTION_SET_IPV4_SRC :
                                        MLX5_FLOW_ACTION_SET_IPV4_DST;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
                        if (flow_dv_convert_action_modify_ipv6
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC ?
                                        MLX5_FLOW_ACTION_SET_IPV6_SRC :
                                        MLX5_FLOW_ACTION_SET_IPV6_DST;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
                case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
                        if (flow_dv_convert_action_modify_tp
                                        (mhdr_res, actions, items,
                                         &flow_attr, dev_flow, !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_SET_TP_SRC ?
                                        MLX5_FLOW_ACTION_SET_TP_SRC :
                                        MLX5_FLOW_ACTION_SET_TP_DST;
                        break;
                case RTE_FLOW_ACTION_TYPE_DEC_TTL:
                        if (flow_dv_convert_action_modify_dec_ttl
                                        (mhdr_res, items, &flow_attr, dev_flow,
                                         !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_DEC_TTL;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_TTL:
                        if (flow_dv_convert_action_modify_ttl
                                        (mhdr_res, actions, items, &flow_attr,
                                         dev_flow, !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_TTL;
                        break;
                case RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ:
                case RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ:
                        if (flow_dv_convert_action_modify_tcp_seq
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ ?
                                        MLX5_FLOW_ACTION_INC_TCP_SEQ :
                                        MLX5_FLOW_ACTION_DEC_TCP_SEQ;
                        break;

                case RTE_FLOW_ACTION_TYPE_INC_TCP_ACK:
                case RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK:
                        if (flow_dv_convert_action_modify_tcp_ack
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= actions->type ==
                                        RTE_FLOW_ACTION_TYPE_INC_TCP_ACK ?
                                        MLX5_FLOW_ACTION_INC_TCP_ACK :
                                        MLX5_FLOW_ACTION_DEC_TCP_ACK;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_TAG:
                        if (flow_dv_convert_action_set_reg
                                        (mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_TAG;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG:
                        if (flow_dv_convert_action_copy_mreg
                                        (dev, mhdr_res, actions, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_TAG;
                        break;
                case MLX5_RTE_FLOW_ACTION_TYPE_DEFAULT_MISS:
                        action_flags |= MLX5_FLOW_ACTION_DEFAULT_MISS;
                        dev_flow->handle->fate_action =
                                        MLX5_FLOW_FATE_DEFAULT_MISS;
                        break;
                case RTE_FLOW_ACTION_TYPE_METER:
                        mtr = actions->conf;
                        if (!flow->meter) {
                                fm = mlx5_flow_meter_attach(priv, mtr->mtr_id,
                                                            attr, error);
                                if (!fm)
                                        return rte_flow_error_set(error,
                                                rte_errno,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                NULL,
                                                "meter not found "
                                                "or invalid parameters");
                                flow->meter = fm->idx;
                        }
                        /* Set the meter action. */
                        if (!fm) {
                                fm = mlx5_ipool_get(priv->sh->ipool
                                                [MLX5_IPOOL_MTR], flow->meter);
                                if (!fm)
                                        return rte_flow_error_set(error,
                                                rte_errno,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                NULL,
                                                "meter not found "
                                                "or invalid parameters");
                        }
                        dev_flow->dv.actions[actions_n++] =
                                fm->mfts->meter_action;
                        action_flags |= MLX5_FLOW_ACTION_METER;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV4_DSCP:
                        if (flow_dv_convert_action_modify_ipv4_dscp(mhdr_res,
                                                              actions, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_IPV4_DSCP;
                        break;
                case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
                        if (flow_dv_convert_action_modify_ipv6_dscp(mhdr_res,
                                                              actions, error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_IPV6_DSCP;
                        break;
                case RTE_FLOW_ACTION_TYPE_SAMPLE:
                        sample_act_pos = actions_n;
                        ret = flow_dv_translate_action_sample(dev,
                                                              actions,
                                                              dev_flow, attr,
                                                              &num_of_dest,
                                                              sample_actions,
                                                              &sample_res,
                                                              error);
                        if (ret < 0)
                                return ret;
                        actions_n++;
                        action_flags |= MLX5_FLOW_ACTION_SAMPLE;
                        /* put encap action into group if work with port id */
                        if ((action_flags & MLX5_FLOW_ACTION_ENCAP) &&
                            (action_flags & MLX5_FLOW_ACTION_PORT_ID))
                                sample_act->action_flags |=
                                                        MLX5_FLOW_ACTION_ENCAP;
                        break;
                case RTE_FLOW_ACTION_TYPE_END:
                        actions_end = true;
                        if (mhdr_res->actions_num) {
                                /* create modify action if needed. */
                                if (flow_dv_modify_hdr_resource_register
                                        (dev, mhdr_res, dev_flow, error))
                                        return -rte_errno;
                                dev_flow->dv.actions[modify_action_position] =
                                        handle->dvh.modify_hdr->action;
                        }
                        if (action_flags & MLX5_FLOW_ACTION_COUNT) {
                                flow->counter =
                                        flow_dv_translate_create_counter(dev,
                                                dev_flow, count, age);

                                if (!flow->counter)
                                        return rte_flow_error_set
                                                (error, rte_errno,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                NULL,
                                                "cannot create counter"
                                                " object.");
                                dev_flow->dv.actions[actions_n] =
                                          (flow_dv_counter_get_by_idx(dev,
                                          flow->counter, NULL))->action;
                                actions_n++;
                        }
                        if (action_flags & MLX5_FLOW_ACTION_SAMPLE) {
                                ret = flow_dv_create_action_sample(dev,
                                                          dev_flow, attr,
                                                          num_of_dest,
                                                          &sample_res,
                                                          &mdest_res,
                                                          sample_actions,
                                                          action_flags,
                                                          error);
                                if (ret < 0)
                                        return rte_flow_error_set
                                                (error, rte_errno,
                                                RTE_FLOW_ERROR_TYPE_ACTION,
                                                NULL,
                                                "cannot create sample action");
                                if (num_of_dest > 1) {
                                        dev_flow->dv.actions[sample_act_pos] =
                                        dev_flow->dv.dest_array_res->action;
                                } else {
                                        dev_flow->dv.actions[sample_act_pos] =
                                        dev_flow->dv.sample_res->verbs_action;
                                }
                        }
                        break;
                default:
                        break;
                }
                if (mhdr_res->actions_num &&
                    modify_action_position == UINT32_MAX)
                        modify_action_position = actions_n++;
        }
        /*
         * For multiple destination (sample action with ratio=1), the encap
         * action and port id action will be combined into group action.
         * So need remove the original these actions in the flow and only
         * use the sample action instead of.
         */
        if (num_of_dest > 1 && sample_act->dr_port_id_action) {
                int i;
                void *temp_actions[MLX5_DV_MAX_NUMBER_OF_ACTIONS] = {0};

                for (i = 0; i < actions_n; i++) {
                        if ((sample_act->dr_encap_action &&
                                sample_act->dr_encap_action ==
                                dev_flow->dv.actions[i]) ||
                                (sample_act->dr_port_id_action &&
                                sample_act->dr_port_id_action ==
                                dev_flow->dv.actions[i]))
                                continue;
                        temp_actions[tmp_actions_n++] = dev_flow->dv.actions[i];
                }
                memcpy((void *)dev_flow->dv.actions,
                                (void *)temp_actions,
                                tmp_actions_n * sizeof(void *));
                actions_n = tmp_actions_n;
        }
        dev_flow->dv.actions_n = actions_n;
        dev_flow->act_flags = action_flags;
        for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
                int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
                int item_type = items->type;

                if (!mlx5_flow_os_item_supported(item_type))
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  NULL, "item not supported");
                switch (item_type) {
                case RTE_FLOW_ITEM_TYPE_PORT_ID:
                        flow_dv_translate_item_port_id(dev, match_mask,
                                                       match_value, items);
                        last_item = MLX5_FLOW_ITEM_PORT_ID;
                        break;
                case RTE_FLOW_ITEM_TYPE_ETH:
                        flow_dv_translate_item_eth(match_mask, match_value,
                                                   items, tunnel,
                                                   dev_flow->dv.group);
                        matcher.priority = action_flags &
                                        MLX5_FLOW_ACTION_DEFAULT_MISS &&
                                        !dev_flow->external ?
                                        MLX5_PRIORITY_MAP_L3 :
                                        MLX5_PRIORITY_MAP_L2;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
                                             MLX5_FLOW_LAYER_OUTER_L2;
                        break;
                case RTE_FLOW_ITEM_TYPE_VLAN:
                        flow_dv_translate_item_vlan(dev_flow,
                                                    match_mask, match_value,
                                                    items, tunnel,
                                                    dev_flow->dv.group);
                        matcher.priority = MLX5_PRIORITY_MAP_L2;
                        last_item = tunnel ? (MLX5_FLOW_LAYER_INNER_L2 |
                                              MLX5_FLOW_LAYER_INNER_VLAN) :
                                             (MLX5_FLOW_LAYER_OUTER_L2 |
                                              MLX5_FLOW_LAYER_OUTER_VLAN);
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV4:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        flow_dv_translate_item_ipv4(match_mask, match_value,
                                                    items, item_flags, tunnel,
                                                    dev_flow->dv.group);
                        matcher.priority = MLX5_PRIORITY_MAP_L3;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
                                             MLX5_FLOW_LAYER_OUTER_L3_IPV4;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv4 *)
                             items->mask)->hdr.next_proto_id) {
                                next_protocol =
                                        ((const struct rte_flow_item_ipv4 *)
                                         (items->spec))->hdr.next_proto_id;
                                next_protocol &=
                                        ((const struct rte_flow_item_ipv4 *)
                                         (items->mask))->hdr.next_proto_id;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        flow_dv_translate_item_ipv6(match_mask, match_value,
                                                    items, item_flags, tunnel,
                                                    dev_flow->dv.group);
                        matcher.priority = MLX5_PRIORITY_MAP_L3;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
                                             MLX5_FLOW_LAYER_OUTER_L3_IPV6;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv6 *)
                             items->mask)->hdr.proto) {
                                next_protocol =
                                        ((const struct rte_flow_item_ipv6 *)
                                         items->spec)->hdr.proto;
                                next_protocol &=
                                        ((const struct rte_flow_item_ipv6 *)
                                         items->mask)->hdr.proto;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
                        flow_dv_translate_item_ipv6_frag_ext(match_mask,
                                                             match_value,
                                                             items, tunnel);
                        last_item = tunnel ?
                                        MLX5_FLOW_LAYER_INNER_L3_IPV6_FRAG_EXT :
                                        MLX5_FLOW_LAYER_OUTER_L3_IPV6_FRAG_EXT;
                        if (items->mask != NULL &&
                            ((const struct rte_flow_item_ipv6_frag_ext *)
                             items->mask)->hdr.next_header) {
                                next_protocol =
                                ((const struct rte_flow_item_ipv6_frag_ext *)
                                 items->spec)->hdr.next_header;
                                next_protocol &=
                                ((const struct rte_flow_item_ipv6_frag_ext *)
                                 items->mask)->hdr.next_header;
                        } else {
                                /* Reset for inner layer. */
                                next_protocol = 0xff;
                        }
                        break;
                case RTE_FLOW_ITEM_TYPE_TCP:
                        flow_dv_translate_item_tcp(match_mask, match_value,
                                                   items, tunnel);
                        matcher.priority = MLX5_PRIORITY_MAP_L4;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L4_TCP :
                                             MLX5_FLOW_LAYER_OUTER_L4_TCP;
                        break;
                case RTE_FLOW_ITEM_TYPE_UDP:
                        flow_dv_translate_item_udp(match_mask, match_value,
                                                   items, tunnel);
                        matcher.priority = MLX5_PRIORITY_MAP_L4;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L4_UDP :
                                             MLX5_FLOW_LAYER_OUTER_L4_UDP;
                        break;
                case RTE_FLOW_ITEM_TYPE_GRE:
                        flow_dv_translate_item_gre(match_mask, match_value,
                                                   items, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_GRE;
                        break;
                case RTE_FLOW_ITEM_TYPE_GRE_KEY:
                        flow_dv_translate_item_gre_key(match_mask,
                                                       match_value, items);
                        last_item = MLX5_FLOW_LAYER_GRE_KEY;
                        break;
                case RTE_FLOW_ITEM_TYPE_NVGRE:
                        flow_dv_translate_item_nvgre(match_mask, match_value,
                                                     items, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_GRE;
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN:
                        flow_dv_translate_item_vxlan(match_mask, match_value,
                                                     items, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_VXLAN;
                        break;
                case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
                        flow_dv_translate_item_vxlan_gpe(match_mask,
                                                         match_value, items,
                                                         tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_VXLAN_GPE;
                        break;
                case RTE_FLOW_ITEM_TYPE_GENEVE:
                        flow_dv_translate_item_geneve(match_mask, match_value,
                                                      items, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_GENEVE;
                        break;
                case RTE_FLOW_ITEM_TYPE_MPLS:
                        flow_dv_translate_item_mpls(match_mask, match_value,
                                                    items, last_item, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_MPLS;
                        break;
                case RTE_FLOW_ITEM_TYPE_MARK:
                        flow_dv_translate_item_mark(dev, match_mask,
                                                    match_value, items);
                        last_item = MLX5_FLOW_ITEM_MARK;
                        break;
                case RTE_FLOW_ITEM_TYPE_META:
                        flow_dv_translate_item_meta(dev, match_mask,
                                                    match_value, attr, items);
                        last_item = MLX5_FLOW_ITEM_METADATA;
                        break;
                case RTE_FLOW_ITEM_TYPE_ICMP:
                        flow_dv_translate_item_icmp(match_mask, match_value,
                                                    items, tunnel);
                        last_item = MLX5_FLOW_LAYER_ICMP;
                        break;
                case RTE_FLOW_ITEM_TYPE_ICMP6:
                        flow_dv_translate_item_icmp6(match_mask, match_value,
                                                      items, tunnel);
                        last_item = MLX5_FLOW_LAYER_ICMP6;
                        break;
                case RTE_FLOW_ITEM_TYPE_TAG:
                        flow_dv_translate_item_tag(dev, match_mask,
                                                   match_value, items);
                        last_item = MLX5_FLOW_ITEM_TAG;
                        break;
                case MLX5_RTE_FLOW_ITEM_TYPE_TAG:
                        flow_dv_translate_mlx5_item_tag(dev, match_mask,
                                                        match_value, items);
                        last_item = MLX5_FLOW_ITEM_TAG;
                        break;
                case MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE:
                        flow_dv_translate_item_tx_queue(dev, match_mask,
                                                        match_value,
                                                        items);
                        last_item = MLX5_FLOW_ITEM_TX_QUEUE;
                        break;
                case RTE_FLOW_ITEM_TYPE_GTP:
                        flow_dv_translate_item_gtp(match_mask, match_value,
                                                   items, tunnel);
                        matcher.priority = MLX5_TUNNEL_PRIO_GET(rss_desc);
                        last_item = MLX5_FLOW_LAYER_GTP;
                        break;
                case RTE_FLOW_ITEM_TYPE_ECPRI:
                        if (!mlx5_flex_parser_ecpri_exist(dev)) {
                                /* Create it only the first time to be used. */
                                ret = mlx5_flex_parser_ecpri_alloc(dev);
                                if (ret)
                                        return rte_flow_error_set
                                                (error, -ret,
                                                RTE_FLOW_ERROR_TYPE_ITEM,
                                                NULL,
                                                "cannot create eCPRI parser");
                        }
                        /* Adjust the length matcher and device flow value. */
                        matcher.mask.size = MLX5_ST_SZ_BYTES(fte_match_param);
                        dev_flow->dv.value.size =
                                        MLX5_ST_SZ_BYTES(fte_match_param);
                        flow_dv_translate_item_ecpri(dev, match_mask,
                                                     match_value, items);
                        /* No other protocol should follow eCPRI layer. */
                        last_item = MLX5_FLOW_LAYER_ECPRI;
                        break;
                default:
                        break;
                }
                item_flags |= last_item;
        }
        /*
         * When E-Switch mode is enabled, we have two cases where we need to
         * set the source port manually.
         * The first one, is in case of Nic steering rule, and the second is
         * E-Switch rule where no port_id item was found. In both cases
         * the source port is set according the current port in use.
         */
        if (!(item_flags & MLX5_FLOW_ITEM_PORT_ID) &&
            (priv->representor || priv->master)) {
                if (flow_dv_translate_item_port_id(dev, match_mask,
                                                   match_value, NULL))
                        return -rte_errno;
        }
#ifdef RTE_LIBRTE_MLX5_DEBUG
        MLX5_ASSERT(!flow_dv_check_valid_spec(matcher.mask.buf,
                                              dev_flow->dv.value.buf));
#endif
        /*
         * Layers may be already initialized from prefix flow if this dev_flow
         * is the suffix flow.
         */
        handle->layers |= item_flags;
        if (action_flags & MLX5_FLOW_ACTION_RSS)
                flow_dv_hashfields_set(dev_flow, rss_desc);
        /* Register matcher. */
        matcher.crc = rte_raw_cksum((const void *)matcher.mask.buf,
                                    matcher.mask.size);
        matcher.priority = mlx5_flow_adjust_priority(dev, priority,
                                                     matcher.priority);
        /* reserved field no needs to be set to 0 here. */
        tbl_key.domain = attr->transfer;
        tbl_key.direction = attr->egress;
        tbl_key.table_id = dev_flow->dv.group;
        if (flow_dv_matcher_register(dev, &matcher, &tbl_key, dev_flow, error))
                return -rte_errno;
        return 0;
}

/**
 * Set hash RX queue by hash fields (see enum ibv_rx_hash_fields)
 * and tunnel.
 *
 * @param[in, out] action
 *   Shred RSS action holding hash RX queue objects.
 * @param[in] hash_fields
 *   Defines combination of packet fields to participate in RX hash.
 * @param[in] tunnel
 *   Tunnel type
 * @param[in] hrxq_idx
 *   Hash RX queue index to set.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
__flow_dv_action_rss_hrxq_set(struct mlx5_shared_action_rss *action,
                              const uint64_t hash_fields,
                              const int tunnel,
                              uint32_t hrxq_idx)
{
        uint32_t *hrxqs = tunnel ? action->hrxq : action->hrxq_tunnel;

        switch (hash_fields & ~IBV_RX_HASH_INNER) {
        case MLX5_RSS_HASH_IPV4:
                hrxqs[0] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_IPV4_TCP:
                hrxqs[1] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_IPV4_UDP:
                hrxqs[2] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_IPV6:
                hrxqs[3] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_IPV6_TCP:
                hrxqs[4] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_IPV6_UDP:
                hrxqs[5] = hrxq_idx;
                return 0;
        case MLX5_RSS_HASH_NONE:
                hrxqs[6] = hrxq_idx;
                return 0;
        default:
                return -1;
        }
}

/**
 * Look up for hash RX queue by hash fields (see enum ibv_rx_hash_fields)
 * and tunnel.
 *
 * @param[in] action
 *   Shred RSS action holding hash RX queue objects.
 * @param[in] hash_fields
 *   Defines combination of packet fields to participate in RX hash.
 * @param[in] tunnel
 *   Tunnel type
 *
 * @return
 *   Valid hash RX queue index, otherwise 0.
 */
static uint32_t
__flow_dv_action_rss_hrxq_lookup(const struct mlx5_shared_action_rss *action,
                                 const uint64_t hash_fields,
                                 const int tunnel)
{
        const uint32_t *hrxqs = tunnel ? action->hrxq : action->hrxq_tunnel;

        switch (hash_fields & ~IBV_RX_HASH_INNER) {
        case MLX5_RSS_HASH_IPV4:
                return hrxqs[0];
        case MLX5_RSS_HASH_IPV4_TCP:
                return hrxqs[1];
        case MLX5_RSS_HASH_IPV4_UDP:
                return hrxqs[2];
        case MLX5_RSS_HASH_IPV6:
                return hrxqs[3];
        case MLX5_RSS_HASH_IPV6_TCP:
                return hrxqs[4];
        case MLX5_RSS_HASH_IPV6_UDP:
                return hrxqs[5];
        case MLX5_RSS_HASH_NONE:
                return hrxqs[6];
        default:
                return 0;
        }
}

/**
 * Retrieves hash RX queue suitable for the *flow*.
 * If shared action configured for *flow* suitable hash RX queue will be
 * retrieved from attached shared action.
 *
 * @param[in] flow
 *   Shred RSS action holding hash RX queue objects.
 * @param[in] dev_flow
 *   Pointer to the sub flow.
 * @param[out] hrxq
 *   Pointer to retrieved hash RX queue object.
 *
 * @return
 *   Valid hash RX queue index, otherwise 0 and rte_errno is set.
 */
static uint32_t
__flow_dv_rss_get_hrxq(struct rte_eth_dev *dev, struct rte_flow *flow,
                           struct mlx5_flow *dev_flow,
                           struct mlx5_hrxq **hrxq)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t hrxq_idx;

        if (flow->shared_rss) {
                hrxq_idx = __flow_dv_action_rss_hrxq_lookup
                                (flow->shared_rss, dev_flow->hash_fields,
                                 !!(dev_flow->handle->layers &
                                    MLX5_FLOW_LAYER_TUNNEL));
                if (hrxq_idx) {
                        *hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
                                               hrxq_idx);
                        rte_atomic32_inc(&(*hrxq)->refcnt);
                }
        } else {
                struct mlx5_flow_rss_desc *rss_desc =
                                &((struct mlx5_flow_rss_desc *)priv->rss_desc)
                                [!!priv->flow_nested_idx];

                MLX5_ASSERT(rss_desc->queue_num);
                hrxq_idx = mlx5_hrxq_get(dev, rss_desc->key,
                                         MLX5_RSS_HASH_KEY_LEN,
                                         dev_flow->hash_fields,
                                         rss_desc->queue, rss_desc->queue_num);
                if (!hrxq_idx) {
                        hrxq_idx = mlx5_hrxq_new(dev,
                                                 rss_desc->key,
                                                 MLX5_RSS_HASH_KEY_LEN,
                                                 dev_flow->hash_fields,
                                                 rss_desc->queue,
                                                 rss_desc->queue_num,
                                                 !!(dev_flow->handle->layers &
                                                 MLX5_FLOW_LAYER_TUNNEL),
                                                 false);
                }
                *hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
                                       hrxq_idx);
        }
        return hrxq_idx;
}

/**
 * Apply the flow to the NIC, lock free,
 * (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in, out] flow
 *   Pointer to flow structure.
 * @param[out] error
 *   Pointer to error structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
__flow_dv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
                struct rte_flow_error *error)
{
        struct mlx5_flow_dv_workspace *dv;
        struct mlx5_flow_handle *dh;
        struct mlx5_flow_handle_dv *dv_h;
        struct mlx5_flow *dev_flow;
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t handle_idx;
        int n;
        int err;
        int idx;

        for (idx = priv->flow_idx - 1; idx >= priv->flow_nested_idx; idx--) {
                dev_flow = &((struct mlx5_flow *)priv->inter_flows)[idx];
                dv = &dev_flow->dv;
                dh = dev_flow->handle;
                dv_h = &dh->dvh;
                n = dv->actions_n;
                if (dh->fate_action == MLX5_FLOW_FATE_DROP) {
                        if (dv->transfer) {
                                dv->actions[n++] = priv->sh->esw_drop_action;
                        } else {
                                struct mlx5_hrxq *drop_hrxq;
                                drop_hrxq = mlx5_drop_action_create(dev);
                                if (!drop_hrxq) {
                                        rte_flow_error_set
                                                (error, errno,
                                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                                 NULL,
                                                 "cannot get drop hash queue");
                                        goto error;
                                }
                                /*
                                 * Drop queues will be released by the specify
                                 * mlx5_drop_action_destroy() function. Assign
                                 * the special index to hrxq to mark the queue
                                 * has been allocated.
                                 */
                                dh->rix_hrxq = UINT32_MAX;
                                dv->actions[n++] = drop_hrxq->action;
                        }
                } else if (dh->fate_action == MLX5_FLOW_FATE_QUEUE &&
                           !dv_h->rix_sample && !dv_h->rix_dest_array) {
                        struct mlx5_hrxq *hrxq = NULL;
                        uint32_t hrxq_idx = __flow_dv_rss_get_hrxq
                                                (dev, flow, dev_flow, &hrxq);

                        if (!hrxq) {
                                rte_flow_error_set
                                        (error, rte_errno,
                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                         "cannot get hash queue");
                                goto error;
                        }
                        dh->rix_hrxq = hrxq_idx;
                        dv->actions[n++] = hrxq->action;
                } else if (dh->fate_action == MLX5_FLOW_FATE_DEFAULT_MISS) {
                        if (flow_dv_default_miss_resource_register
                                        (dev, error)) {
                                rte_flow_error_set
                                        (error, rte_errno,
                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                         "cannot create default miss resource");
                                goto error_default_miss;
                        }
                        dh->rix_default_fate =  MLX5_FLOW_FATE_DEFAULT_MISS;
                        dv->actions[n++] = priv->sh->default_miss.action;
                }
                err = mlx5_flow_os_create_flow(dv_h->matcher->matcher_object,
                                               (void *)&dv->value, n,
                                               dv->actions, &dh->drv_flow);
                if (err) {
                        rte_flow_error_set(error, errno,
                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                           NULL,
                                           "hardware refuses to create flow");
                        goto error;
                }
                if (priv->vmwa_context &&
                    dh->vf_vlan.tag && !dh->vf_vlan.created) {
                        /*
                         * The rule contains the VLAN pattern.
                         * For VF we are going to create VLAN
                         * interface to make hypervisor set correct
                         * e-Switch vport context.
                         */
                        mlx5_vlan_vmwa_acquire(dev, &dh->vf_vlan);
                }
        }
        return 0;
error:
        if (dh->fate_action == MLX5_FLOW_FATE_DEFAULT_MISS)
                flow_dv_default_miss_resource_release(dev);
error_default_miss:
        err = rte_errno; /* Save rte_errno before cleanup. */
        SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
                       handle_idx, dh, next) {
                /* hrxq is union, don't clear it if the flag is not set. */
                if (dh->rix_hrxq) {
                        if (dh->fate_action == MLX5_FLOW_FATE_DROP) {
                                mlx5_drop_action_destroy(dev);
                                dh->rix_hrxq = 0;
                        } else if (dh->fate_action == MLX5_FLOW_FATE_QUEUE) {
                                mlx5_hrxq_release(dev, dh->rix_hrxq);
                                dh->rix_hrxq = 0;
                        }
                }
                if (dh->vf_vlan.tag && dh->vf_vlan.created)
                        mlx5_vlan_vmwa_release(dev, &dh->vf_vlan);
        }
        rte_errno = err; /* Restore rte_errno. */
        return -rte_errno;
}

/**
 * Release the flow matcher.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_matcher_release(struct rte_eth_dev *dev,
                        struct mlx5_flow_handle *handle)
{
        struct mlx5_flow_dv_matcher *matcher = handle->dvh.matcher;

        MLX5_ASSERT(matcher->matcher_object);
        DRV_LOG(DEBUG, "port %u matcher %p: refcnt %d--",
                dev->data->port_id, (void *)matcher,
                rte_atomic32_read(&matcher->refcnt));
        if (rte_atomic32_dec_and_test(&matcher->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (matcher->matcher_object));
                LIST_REMOVE(matcher, next);
                /* table ref-- in release interface. */
                flow_dv_tbl_resource_release(dev, matcher->tbl);
                mlx5_free(matcher);
                DRV_LOG(DEBUG, "port %u matcher %p: removed",
                        dev->data->port_id, (void *)matcher);
                return 0;
        }
        return 1;
}

/**
 * Release an encap/decap resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param encap_decap_idx
 *   Index of encap decap resource.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_encap_decap_resource_release(struct rte_eth_dev *dev,
                                     uint32_t encap_decap_idx)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t idx = encap_decap_idx;
        struct mlx5_flow_dv_encap_decap_resource *cache_resource;

        cache_resource = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_DECAP_ENCAP],
                         idx);
        if (!cache_resource)
                return 0;
        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "encap/decap resource %p: refcnt %d--",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                mlx5_hlist_remove(priv->sh->encaps_decaps,
                                  &cache_resource->entry);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_DECAP_ENCAP], idx);
                DRV_LOG(DEBUG, "encap/decap resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release an jump to table action resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_jump_tbl_resource_release(struct rte_eth_dev *dev,
                                  struct mlx5_flow_handle *handle)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_dv_jump_tbl_resource *cache_resource;
        struct mlx5_flow_tbl_data_entry *tbl_data;

        tbl_data = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_JUMP],
                             handle->rix_jump);
        if (!tbl_data)
                return 0;
        cache_resource = &tbl_data->jump;
        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "jump table resource %p: refcnt %d--",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                /* jump action memory free is inside the table release. */
                flow_dv_tbl_resource_release(dev, &tbl_data->tbl);
                DRV_LOG(DEBUG, "jump table resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release a default miss resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_default_miss_resource_release(struct rte_eth_dev *dev)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_default_miss_resource *cache_resource =
                        &sh->default_miss;

        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "default miss resource %p: refcnt %d--",
                        (void *)cache_resource->action,
                        rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_glue->destroy_flow_action
                                (cache_resource->action));
                DRV_LOG(DEBUG, "default miss resource %p: removed",
                                (void *)cache_resource->action);
                return 0;
        }
        return 1;
}

/**
 * Release a modify-header resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_modify_hdr_resource_release(struct rte_eth_dev *dev,
                                    struct mlx5_flow_handle *handle)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_dv_modify_hdr_resource *cache_resource =
                                                        handle->dvh.modify_hdr;

        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "modify-header resource %p: refcnt %d--",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                mlx5_hlist_remove(priv->sh->modify_cmds,
                                  &cache_resource->entry);
                mlx5_free(cache_resource);
                DRV_LOG(DEBUG, "modify-header resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release port ID action resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_port_id_action_resource_release(struct rte_eth_dev *dev,
                                        uint32_t port_id)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_dv_port_id_action_resource *cache_resource;
        uint32_t idx = port_id;

        cache_resource = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_PORT_ID],
                                        idx);
        if (!cache_resource)
                return 0;
        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "port ID action resource %p: refcnt %d--",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_PORT_ID],
                             &priv->sh->port_id_action_list, idx,
                             cache_resource, next);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_PORT_ID], idx);
                DRV_LOG(DEBUG, "port id action resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release push vlan action resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_push_vlan_action_resource_release(struct rte_eth_dev *dev,
                                          struct mlx5_flow_handle *handle)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t idx = handle->dvh.rix_push_vlan;
        struct mlx5_flow_dv_push_vlan_action_resource *cache_resource;

        cache_resource = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_PUSH_VLAN],
                                        idx);
        if (!cache_resource)
                return 0;
        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "push VLAN action resource %p: refcnt %d--",
                (void *)cache_resource,
                rte_atomic32_read(&cache_resource->refcnt));
        if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
                claim_zero(mlx5_flow_os_destroy_flow_action
                                                (cache_resource->action));
                ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_PUSH_VLAN],
                             &priv->sh->push_vlan_action_list, idx,
                             cache_resource, next);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_PUSH_VLAN], idx);
                DRV_LOG(DEBUG, "push vlan action resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release the fate resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 */
static void
flow_dv_fate_resource_release(struct rte_eth_dev *dev,
                               struct mlx5_flow_handle *handle)
{
        if (!handle->rix_fate)
                return;
        switch (handle->fate_action) {
        case MLX5_FLOW_FATE_DROP:
                mlx5_drop_action_destroy(dev);
                break;
        case MLX5_FLOW_FATE_QUEUE:
                mlx5_hrxq_release(dev, handle->rix_hrxq);
                break;
        case MLX5_FLOW_FATE_JUMP:
                flow_dv_jump_tbl_resource_release(dev, handle);
                break;
        case MLX5_FLOW_FATE_PORT_ID:
                flow_dv_port_id_action_resource_release(dev,
                                handle->rix_port_id_action);
                break;
        case MLX5_FLOW_FATE_DEFAULT_MISS:
                flow_dv_default_miss_resource_release(dev);
                break;
        default:
                DRV_LOG(DEBUG, "Incorrect fate action:%d", handle->fate_action);
                break;
        }
        handle->rix_fate = 0;
}

/**
 * Release an sample resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_sample_resource_release(struct rte_eth_dev *dev,
                                     struct mlx5_flow_handle *handle)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        uint32_t idx = handle->dvh.rix_sample;
        struct mlx5_flow_dv_sample_resource *cache_resource;

        cache_resource = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_SAMPLE],
                         idx);
        if (!cache_resource)
                return 0;
        MLX5_ASSERT(cache_resource->verbs_action);
        DRV_LOG(DEBUG, "sample resource %p: refcnt %d--",
                (void *)cache_resource,
                __atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
        if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
                               __ATOMIC_RELAXED) == 0) {
                if (cache_resource->verbs_action)
                        claim_zero(mlx5_glue->destroy_flow_action
                                        (cache_resource->verbs_action));
                if (cache_resource->ft_type == MLX5DV_FLOW_TABLE_TYPE_FDB) {
                        if (cache_resource->default_miss)
                                claim_zero(mlx5_glue->destroy_flow_action
                                  (cache_resource->default_miss));
                }
                if (cache_resource->normal_path_tbl)
                        flow_dv_tbl_resource_release(dev,
                                cache_resource->normal_path_tbl);
        }
        if (cache_resource->sample_idx.rix_hrxq &&
                !mlx5_hrxq_release(dev,
                        cache_resource->sample_idx.rix_hrxq))
                cache_resource->sample_idx.rix_hrxq = 0;
        if (cache_resource->sample_idx.rix_tag &&
                !flow_dv_tag_release(dev,
                        cache_resource->sample_idx.rix_tag))
                cache_resource->sample_idx.rix_tag = 0;
        if (cache_resource->sample_idx.cnt) {
                flow_dv_counter_release(dev,
                        cache_resource->sample_idx.cnt);
                cache_resource->sample_idx.cnt = 0;
        }
        if (!__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED)) {
                ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_SAMPLE],
                             &priv->sh->sample_action_list, idx,
                             cache_resource, next);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_SAMPLE], idx);
                DRV_LOG(DEBUG, "sample resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Release an destination array resource.
 *
 * @param dev
 *   Pointer to Ethernet device.
 * @param handle
 *   Pointer to mlx5_flow_handle.
 *
 * @return
 *   1 while a reference on it exists, 0 when freed.
 */
static int
flow_dv_dest_array_resource_release(struct rte_eth_dev *dev,
                                     struct mlx5_flow_handle *handle)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_dv_dest_array_resource *cache_resource;
        struct mlx5_flow_sub_actions_idx *mdest_act_res;
        uint32_t idx = handle->dvh.rix_dest_array;
        uint32_t i = 0;

        cache_resource = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                         idx);
        if (!cache_resource)
                return 0;
        MLX5_ASSERT(cache_resource->action);
        DRV_LOG(DEBUG, "destination array resource %p: refcnt %d--",
                (void *)cache_resource,
                __atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
        if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
                               __ATOMIC_RELAXED) == 0) {
                if (cache_resource->action)
                        claim_zero(mlx5_glue->destroy_flow_action
                                                (cache_resource->action));
                for (; i < cache_resource->num_of_dest; i++) {
                        mdest_act_res = &cache_resource->sample_idx[i];
                        if (mdest_act_res->rix_hrxq) {
                                mlx5_hrxq_release(dev,
                                        mdest_act_res->rix_hrxq);
                                mdest_act_res->rix_hrxq = 0;
                        }
                        if (mdest_act_res->rix_encap_decap) {
                                flow_dv_encap_decap_resource_release(dev,
                                        mdest_act_res->rix_encap_decap);
                                mdest_act_res->rix_encap_decap = 0;
                        }
                        if (mdest_act_res->rix_port_id_action) {
                                flow_dv_port_id_action_resource_release(dev,
                                        mdest_act_res->rix_port_id_action);
                                mdest_act_res->rix_port_id_action = 0;
                        }
                        if (mdest_act_res->rix_tag) {
                                flow_dv_tag_release(dev,
                                        mdest_act_res->rix_tag);
                                mdest_act_res->rix_tag = 0;
                        }
                }
                ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_DEST_ARRAY],
                             &priv->sh->dest_array_list, idx,
                             cache_resource, next);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_DEST_ARRAY], idx);
                DRV_LOG(DEBUG, "destination array resource %p: removed",
                        (void *)cache_resource);
                return 0;
        }
        return 1;
}

/**
 * Remove the flow from the NIC but keeps it in memory.
 * Lock free, (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in, out] flow
 *   Pointer to flow structure.
 */
static void
__flow_dv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
{
        struct mlx5_flow_handle *dh;
        uint32_t handle_idx;
        struct mlx5_priv *priv = dev->data->dev_private;

        if (!flow)
                return;
        handle_idx = flow->dev_handles;
        while (handle_idx) {
                dh = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW],
                                    handle_idx);
                if (!dh)
                        return;
                if (dh->drv_flow) {
                        claim_zero(mlx5_flow_os_destroy_flow(dh->drv_flow));
                        dh->drv_flow = NULL;
                }
                if (dh->fate_action == MLX5_FLOW_FATE_DROP ||
                    dh->fate_action == MLX5_FLOW_FATE_QUEUE ||
                    dh->fate_action == MLX5_FLOW_FATE_DEFAULT_MISS)
                        flow_dv_fate_resource_release(dev, dh);
                if (dh->vf_vlan.tag && dh->vf_vlan.created)
                        mlx5_vlan_vmwa_release(dev, &dh->vf_vlan);
                handle_idx = dh->next.next;
        }
}

/**
 * Remove the flow from the NIC and the memory.
 * Lock free, (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in, out] flow
 *   Pointer to flow structure.
 */
static void
__flow_dv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
{
        struct rte_flow_shared_action *shared;
        struct mlx5_flow_handle *dev_handle;
        struct mlx5_priv *priv = dev->data->dev_private;

        if (!flow)
                return;
        __flow_dv_remove(dev, flow);
        shared = mlx5_flow_get_shared_rss(flow);
        if (shared)
                __atomic_sub_fetch(&shared->refcnt, 1, __ATOMIC_RELAXED);
        if (flow->counter) {
                flow_dv_counter_release(dev, flow->counter);
                flow->counter = 0;
        }
        if (flow->meter) {
                struct mlx5_flow_meter *fm;

                fm = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MTR],
                                    flow->meter);
                if (fm)
                        mlx5_flow_meter_detach(fm);
                flow->meter = 0;
        }
        while (flow->dev_handles) {
                uint32_t tmp_idx = flow->dev_handles;

                dev_handle = mlx5_ipool_get(priv->sh->ipool
                                            [MLX5_IPOOL_MLX5_FLOW], tmp_idx);
                if (!dev_handle)
                        return;
                flow->dev_handles = dev_handle->next.next;
                if (dev_handle->dvh.matcher)
                        flow_dv_matcher_release(dev, dev_handle);
                if (dev_handle->dvh.rix_sample)
                        flow_dv_sample_resource_release(dev, dev_handle);
                if (dev_handle->dvh.rix_dest_array)
                        flow_dv_dest_array_resource_release(dev, dev_handle);
                if (dev_handle->dvh.rix_encap_decap)
                        flow_dv_encap_decap_resource_release(dev,
                                dev_handle->dvh.rix_encap_decap);
                if (dev_handle->dvh.modify_hdr)
                        flow_dv_modify_hdr_resource_release(dev, dev_handle);
                if (dev_handle->dvh.rix_push_vlan)
                        flow_dv_push_vlan_action_resource_release(dev,
                                                                  dev_handle);
                if (dev_handle->dvh.rix_tag)
                        flow_dv_tag_release(dev,
                                            dev_handle->dvh.rix_tag);
                flow_dv_fate_resource_release(dev, dev_handle);
                mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW],
                           tmp_idx);
        }
}

/**
 * Release array of hash RX queue objects.
 * Helper function.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in, out] hrxqs
 *   Array of hash RX queue objects.
 *
 * @return
 *   Total number of references to hash RX queue objects in *hrxqs* array
 *   after this operation.
 */
static int
__flow_dv_hrxqs_release(struct rte_eth_dev *dev,
                        uint32_t (*hrxqs)[MLX5_RSS_HASH_FIELDS_LEN])
{
        size_t i;
        int remaining = 0;

        for (i = 0; i < RTE_DIM(*hrxqs); i++) {
                int ret = mlx5_hrxq_release(dev, (*hrxqs)[i]);

                if (!ret)
                        (*hrxqs)[i] = 0;
                remaining += ret;
        }
        return remaining;
}

/**
 * Release all hash RX queue objects representing shared RSS action.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in, out] action
 *   Shared RSS action to remove hash RX queue objects from.
 *
 * @return
 *   Total number of references to hash RX queue objects stored in *action*
 *   after this operation.
 *   Expected to be 0 if no external references held.
 */
static int
__flow_dv_action_rss_hrxqs_release(struct rte_eth_dev *dev,
                                 struct mlx5_shared_action_rss *action)
{
        return __flow_dv_hrxqs_release(dev, &action->hrxq) +
                __flow_dv_hrxqs_release(dev, &action->hrxq_tunnel);
}

/**
 * Setup shared RSS action.
 * Prepare set of hash RX queue objects sufficient to handle all valid
 * hash_fields combinations (see enum ibv_rx_hash_fields).
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in, out] action
 *   Partially initialized shared RSS action.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
__flow_dv_action_rss_setup(struct rte_eth_dev *dev,
                        struct mlx5_shared_action_rss *action,
                        struct rte_flow_error *error)
{
        size_t i;
        int err;

        for (i = 0; i < MLX5_RSS_HASH_FIELDS_LEN; i++) {
                uint32_t hrxq_idx;
                uint64_t hash_fields = mlx5_rss_hash_fields[i];
                int tunnel;

                for (tunnel = 0; tunnel < 2; tunnel++) {
                        hrxq_idx = mlx5_hrxq_new(dev, action->origin.key,
                                        MLX5_RSS_HASH_KEY_LEN,
                                        hash_fields,
                                        action->origin.queue,
                                        action->origin.queue_num,
                                        tunnel, true);
                        if (!hrxq_idx) {
                                rte_flow_error_set
                                        (error, rte_errno,
                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                         "cannot get hash queue");
                                goto error_hrxq_new;
                        }
                        err = __flow_dv_action_rss_hrxq_set
                                (action, hash_fields, tunnel, hrxq_idx);
                        MLX5_ASSERT(!err);
                }
        }
        return 0;
error_hrxq_new:
        err = rte_errno;
        __flow_dv_action_rss_hrxqs_release(dev, action);
        rte_errno = err;
        return -rte_errno;
}

/**
 * Create shared RSS action.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] conf
 *   Shared action configuration.
 * @param[in] rss
 *   RSS action specification used to create shared action.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   A valid shared action handle in case of success, NULL otherwise and
 *   rte_errno is set.
 */
static struct rte_flow_shared_action *
__flow_dv_action_rss_create(struct rte_eth_dev *dev,
                            const struct rte_flow_shared_action_conf *conf,
                            const struct rte_flow_action_rss *rss,
                            struct rte_flow_error *error)
{
        struct rte_flow_shared_action *shared_action = NULL;
        void *queue = NULL;
        struct mlx5_shared_action_rss *shared_rss;
        struct rte_flow_action_rss *origin;
        const uint8_t *rss_key;
        uint32_t queue_size = rss->queue_num * sizeof(uint16_t);

        RTE_SET_USED(conf);
        queue = mlx5_malloc(0, RTE_ALIGN_CEIL(queue_size, sizeof(void *)),
                            0, SOCKET_ID_ANY);
        shared_action = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*shared_action), 0,
                                    SOCKET_ID_ANY);
        if (!shared_action || !queue) {
                rte_flow_error_set(error, ENOMEM,
                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
                                   "cannot allocate resource memory");
                goto error_rss_init;
        }
        shared_rss = &shared_action->rss;
        shared_rss->queue = queue;
        origin = &shared_rss->origin;
        origin->func = rss->func;
        origin->level = rss->level;
        /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
        origin->types = !rss->types ? ETH_RSS_IP : rss->types;
        /* NULL RSS key indicates default RSS key. */
        rss_key = !rss->key ? rss_hash_default_key : rss->key;
        memcpy(shared_rss->key, rss_key, MLX5_RSS_HASH_KEY_LEN);
        origin->key = &shared_rss->key[0];
        origin->key_len = MLX5_RSS_HASH_KEY_LEN;
        memcpy(shared_rss->queue, rss->queue, queue_size);
        origin->queue = shared_rss->queue;
        origin->queue_num = rss->queue_num;
        if (__flow_dv_action_rss_setup(dev, shared_rss, error))
                goto error_rss_init;
        shared_action->type = MLX5_RTE_FLOW_ACTION_TYPE_SHARED_RSS;
        return shared_action;
error_rss_init:
        mlx5_free(shared_action);
        mlx5_free(queue);
        return NULL;
}

/**
 * Destroy the shared RSS action.
 * Release related hash RX queue objects.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] shared_rss
 *   The shared RSS action object to be removed.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
__flow_dv_action_rss_release(struct rte_eth_dev *dev,
                         struct mlx5_shared_action_rss *shared_rss,
                         struct rte_flow_error *error)
{
        struct rte_flow_shared_action *shared_action = NULL;
        uint32_t old_refcnt = 1;
        int remaining = __flow_dv_action_rss_hrxqs_release(dev, shared_rss);

        if (remaining) {
                return rte_flow_error_set(error, ETOOMANYREFS,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "shared rss hrxq has references");
        }
        shared_action = container_of(shared_rss,
                                     struct rte_flow_shared_action, rss);
        if (!__atomic_compare_exchange_n(&shared_action->refcnt, &old_refcnt,
                                         0, 0,
                                         __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) {
                return rte_flow_error_set(error, ETOOMANYREFS,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "shared rss has references");
        }
        rte_free(shared_rss->queue);
        return 0;
}

/**
 * Create shared action, lock free,
 * (mutex should be acquired by caller).
 * Dispatcher for action type specific call.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] conf
 *   Shared action configuration.
 * @param[in] action
 *   Action specification used to create shared action.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   A valid shared action handle in case of success, NULL otherwise and
 *   rte_errno is set.
 */
static struct rte_flow_shared_action *
__flow_dv_action_create(struct rte_eth_dev *dev,
                        const struct rte_flow_shared_action_conf *conf,
                        const struct rte_flow_action *action,
                        struct rte_flow_error *error)
{
        struct rte_flow_shared_action *shared_action = NULL;
        struct mlx5_priv *priv = dev->data->dev_private;

        switch (action->type) {
        case RTE_FLOW_ACTION_TYPE_RSS:
                shared_action = __flow_dv_action_rss_create(dev, conf,
                                                            action->conf,
                                                            error);
                break;
        default:
                rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
                                   NULL, "action type not supported");
                break;
        }
        if (shared_action) {
                __atomic_add_fetch(&shared_action->refcnt, 1,
                                   __ATOMIC_RELAXED);
                LIST_INSERT_HEAD(&priv->shared_actions, shared_action, next);
        }
        return shared_action;
}

/**
 * Destroy the shared action.
 * Release action related resources on the NIC and the memory.
 * Lock free, (mutex should be acquired by caller).
 * Dispatcher for action type specific call.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] action
 *   The shared action object to be removed.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
__flow_dv_action_destroy(struct rte_eth_dev *dev,
                         struct rte_flow_shared_action *action,
                         struct rte_flow_error *error)
{
        int ret;

        switch (action->type) {
        case MLX5_RTE_FLOW_ACTION_TYPE_SHARED_RSS:
                ret = __flow_dv_action_rss_release(dev, &action->rss, error);
                break;
        default:
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "action type not supported");
        }
        if (ret)
                return ret;
        LIST_REMOVE(action, next);
        rte_free(action);
        return 0;
}

/**
 * Updates in place shared RSS action configuration.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] shared_rss
 *   The shared RSS action object to be updated.
 * @param[in] action_conf
 *   RSS action specification used to modify *shared_rss*.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 * @note: currently only support update of RSS queues.
 */
static int
__flow_dv_action_rss_update(struct rte_eth_dev *dev,
                            struct mlx5_shared_action_rss *shared_rss,
                            const struct rte_flow_action_rss *action_conf,
                            struct rte_flow_error *error)
{
        size_t i;
        int ret;
        void *queue = NULL;
        const uint8_t *rss_key;
        uint32_t rss_key_len;
        uint32_t queue_size = action_conf->queue_num * sizeof(uint16_t);

        queue = mlx5_malloc(MLX5_MEM_ZERO,
                            RTE_ALIGN_CEIL(queue_size, sizeof(void *)),
                            0, SOCKET_ID_ANY);
        if (!queue)
                return rte_flow_error_set(error, ENOMEM,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "cannot allocate resource memory");
        if (action_conf->key) {
                rss_key = action_conf->key;
                rss_key_len = action_conf->key_len;
        } else {
                rss_key = rss_hash_default_key;
                rss_key_len = MLX5_RSS_HASH_KEY_LEN;
        }
        for (i = 0; i < MLX5_RSS_HASH_FIELDS_LEN; i++) {
                uint32_t hrxq_idx;
                uint64_t hash_fields = mlx5_rss_hash_fields[i];
                int tunnel;

                for (tunnel = 0; tunnel < 2; tunnel++) {
                        hrxq_idx = __flow_dv_action_rss_hrxq_lookup
                                        (shared_rss, hash_fields, tunnel);
                        MLX5_ASSERT(hrxq_idx);
                        ret = mlx5_hrxq_modify
                                (dev, hrxq_idx,
                                 rss_key, rss_key_len,
                                 hash_fields,
                                 action_conf->queue, action_conf->queue_num);
                        if (ret) {
                                mlx5_free(queue);
                                return rte_flow_error_set
                                        (error, rte_errno,
                                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                         "cannot update hash queue");
                        }
                }
        }
        mlx5_free(shared_rss->queue);
        shared_rss->queue = queue;
        memcpy(shared_rss->queue, action_conf->queue, queue_size);
        shared_rss->origin.queue = shared_rss->queue;
        shared_rss->origin.queue_num = action_conf->queue_num;
        return 0;
}

/**
 * Updates in place shared action configuration, lock free,
 * (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] action
 *   The shared action object to be updated.
 * @param[in] action_conf
 *   Action specification used to modify *action*.
 *   *action_conf* should be of type correlating with type of the *action*,
 *   otherwise considered as invalid.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
__flow_dv_action_update(struct rte_eth_dev *dev,
                        struct rte_flow_shared_action *action,
                        const void *action_conf,
                        struct rte_flow_error *error)
{
        switch (action->type) {
        case MLX5_RTE_FLOW_ACTION_TYPE_SHARED_RSS:
                return __flow_dv_action_rss_update(dev, &action->rss,
                                                   action_conf, error);
        default:
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "action type not supported");
        }
}
/**
 * Query a dv flow  rule for its statistics via devx.
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] flow
 *   Pointer to the sub flow.
 * @param[out] data
 *   data retrieved by the query.
 * @param[out] error
 *   Perform verbose error reporting if not NULL.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_query_count(struct rte_eth_dev *dev, struct rte_flow *flow,
                    void *data, struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct rte_flow_query_count *qc = data;

        if (!priv->config.devx)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "counters are not supported");
        if (flow->counter) {
                uint64_t pkts, bytes;
                struct mlx5_flow_counter *cnt;

                cnt = flow_dv_counter_get_by_idx(dev, flow->counter,
                                                 NULL);
                int err = _flow_dv_query_count(dev, flow->counter, &pkts,
                                               &bytes);

                if (err)
                        return rte_flow_error_set(error, -err,
                                        RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                        NULL, "cannot read counters");
                qc->hits_set = 1;
                qc->bytes_set = 1;
                qc->hits = pkts - cnt->hits;
                qc->bytes = bytes - cnt->bytes;
                if (qc->reset) {
                        cnt->hits = pkts;
                        cnt->bytes = bytes;
                }
                return 0;
        }
        return rte_flow_error_set(error, EINVAL,
                                  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                  NULL,
                                  "counters are not available");
}

/**
 * Query a flow rule AGE action for aging information.
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] flow
 *   Pointer to the sub flow.
 * @param[out] data
 *   data retrieved by the query.
 * @param[out] error
 *   Perform verbose error reporting if not NULL.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
static int
flow_dv_query_age(struct rte_eth_dev *dev, struct rte_flow *flow,
                  void *data, struct rte_flow_error *error)
{
        struct rte_flow_query_age *resp = data;

        if (flow->counter) {
                struct mlx5_age_param *age_param =
                                flow_dv_counter_idx_get_age(dev, flow->counter);

                if (!age_param || !age_param->timeout)
                        return rte_flow_error_set
                                        (error, EINVAL,
                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                         NULL, "cannot read age data");
                resp->aged = __atomic_load_n(&age_param->state,
                                             __ATOMIC_RELAXED) ==
                                                        AGE_TMOUT ? 1 : 0;
                resp->sec_since_last_hit_valid = !resp->aged;
                if (resp->sec_since_last_hit_valid)
                        resp->sec_since_last_hit =
                                __atomic_load_n(&age_param->sec_since_last_hit,
                                                __ATOMIC_RELAXED);
                return 0;
        }
        return rte_flow_error_set(error, EINVAL,
                                  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                  NULL,
                                  "age data not available");
}

/**
 * Query a flow.
 *
 * @see rte_flow_query()
 * @see rte_flow_ops
 */
static int
flow_dv_query(struct rte_eth_dev *dev,
              struct rte_flow *flow __rte_unused,
              const struct rte_flow_action *actions __rte_unused,
              void *data __rte_unused,
              struct rte_flow_error *error __rte_unused)
{
        int ret = -EINVAL;

        for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
                switch (actions->type) {
                case RTE_FLOW_ACTION_TYPE_VOID:
                        break;
                case RTE_FLOW_ACTION_TYPE_COUNT:
                        ret = flow_dv_query_count(dev, flow, data, error);
                        break;
                case RTE_FLOW_ACTION_TYPE_AGE:
                        ret = flow_dv_query_age(dev, flow, data, error);
                        break;
                default:
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  actions,
                                                  "action not supported");
                }
        }
        return ret;
}

/**
 * Destroy the meter table set.
 * Lock free, (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] tbl
 *   Pointer to the meter table set.
 *
 * @return
 *   Always 0.
 */
static int
flow_dv_destroy_mtr_tbl(struct rte_eth_dev *dev,
                        struct mlx5_meter_domains_infos *tbl)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_meter_domains_infos *mtd =
                                (struct mlx5_meter_domains_infos *)tbl;

        if (!mtd || !priv->config.dv_flow_en)
                return 0;
        if (mtd->ingress.policer_rules[RTE_MTR_DROPPED])
                claim_zero(mlx5_flow_os_destroy_flow
                           (mtd->ingress.policer_rules[RTE_MTR_DROPPED]));
        if (mtd->egress.policer_rules[RTE_MTR_DROPPED])
                claim_zero(mlx5_flow_os_destroy_flow
                           (mtd->egress.policer_rules[RTE_MTR_DROPPED]));
        if (mtd->transfer.policer_rules[RTE_MTR_DROPPED])
                claim_zero(mlx5_flow_os_destroy_flow
                           (mtd->transfer.policer_rules[RTE_MTR_DROPPED]));
        if (mtd->egress.color_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->egress.color_matcher));
        if (mtd->egress.any_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->egress.any_matcher));
        if (mtd->egress.tbl)
                flow_dv_tbl_resource_release(dev, mtd->egress.tbl);
        if (mtd->egress.sfx_tbl)
                flow_dv_tbl_resource_release(dev, mtd->egress.sfx_tbl);
        if (mtd->ingress.color_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->ingress.color_matcher));
        if (mtd->ingress.any_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->ingress.any_matcher));
        if (mtd->ingress.tbl)
                flow_dv_tbl_resource_release(dev, mtd->ingress.tbl);
        if (mtd->ingress.sfx_tbl)
                flow_dv_tbl_resource_release(dev, mtd->ingress.sfx_tbl);
        if (mtd->transfer.color_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->transfer.color_matcher));
        if (mtd->transfer.any_matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher
                           (mtd->transfer.any_matcher));
        if (mtd->transfer.tbl)
                flow_dv_tbl_resource_release(dev, mtd->transfer.tbl);
        if (mtd->transfer.sfx_tbl)
                flow_dv_tbl_resource_release(dev, mtd->transfer.sfx_tbl);
        if (mtd->drop_actn)
                claim_zero(mlx5_flow_os_destroy_flow_action(mtd->drop_actn));
        mlx5_free(mtd);
        return 0;
}

/* Number of meter flow actions, count and jump or count and drop. */
#define METER_ACTIONS 2

/**
 * Create specify domain meter table and suffix table.
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in,out] mtb
 *   Pointer to DV meter table set.
 * @param[in] egress
 *   Table attribute.
 * @param[in] transfer
 *   Table attribute.
 * @param[in] color_reg_c_idx
 *   Reg C index for color match.
 *
 * @return
 *   0 on success, -1 otherwise and rte_errno is set.
 */
static int
flow_dv_prepare_mtr_tables(struct rte_eth_dev *dev,
                           struct mlx5_meter_domains_infos *mtb,
                           uint8_t egress, uint8_t transfer,
                           uint32_t color_reg_c_idx)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_match_params mask = {
                .size = sizeof(mask.buf),
        };
        struct mlx5_flow_dv_match_params value = {
                .size = sizeof(value.buf),
        };
        struct mlx5dv_flow_matcher_attr dv_attr = {
                .type = IBV_FLOW_ATTR_NORMAL,
                .priority = 0,
                .match_criteria_enable = 0,
                .match_mask = (void *)&mask,
        };
        void *actions[METER_ACTIONS];
        struct mlx5_meter_domain_info *dtb;
        struct rte_flow_error error;
        int i = 0;
        int ret;

        if (transfer)
                dtb = &mtb->transfer;
        else if (egress)
                dtb = &mtb->egress;
        else
                dtb = &mtb->ingress;
        /* Create the meter table with METER level. */
        dtb->tbl = flow_dv_tbl_resource_get(dev, MLX5_FLOW_TABLE_LEVEL_METER,
                                            egress, transfer, false, NULL, 0,
                                            &error);
        if (!dtb->tbl) {
                DRV_LOG(ERR, "Failed to create meter policer table.");
                return -1;
        }
        /* Create the meter suffix table with SUFFIX level. */
        dtb->sfx_tbl = flow_dv_tbl_resource_get(dev,
                                            MLX5_FLOW_TABLE_LEVEL_SUFFIX,
                                            egress, transfer, false, NULL, 0,
                                            &error);
        if (!dtb->sfx_tbl) {
                DRV_LOG(ERR, "Failed to create meter suffix table.");
                return -1;
        }
        /* Create matchers, Any and Color. */
        dv_attr.priority = 3;
        dv_attr.match_criteria_enable = 0;
        ret = mlx5_flow_os_create_flow_matcher(sh->ctx, &dv_attr, dtb->tbl->obj,
                                               &dtb->any_matcher);
        if (ret) {
                DRV_LOG(ERR, "Failed to create meter"
                             " policer default matcher.");
                goto error_exit;
        }
        dv_attr.priority = 0;
        dv_attr.match_criteria_enable =
                                1 << MLX5_MATCH_CRITERIA_ENABLE_MISC2_BIT;
        flow_dv_match_meta_reg(mask.buf, value.buf, color_reg_c_idx,
                               rte_col_2_mlx5_col(RTE_COLORS), UINT8_MAX);
        ret = mlx5_flow_os_create_flow_matcher(sh->ctx, &dv_attr, dtb->tbl->obj,
                                               &dtb->color_matcher);
        if (ret) {
                DRV_LOG(ERR, "Failed to create meter policer color matcher.");
                goto error_exit;
        }
        if (mtb->count_actns[RTE_MTR_DROPPED])
                actions[i++] = mtb->count_actns[RTE_MTR_DROPPED];
        actions[i++] = mtb->drop_actn;
        /* Default rule: lowest priority, match any, actions: drop. */
        ret = mlx5_flow_os_create_flow(dtb->any_matcher, (void *)&value, i,
                                       actions,
                                       &dtb->policer_rules[RTE_MTR_DROPPED]);
        if (ret) {
                DRV_LOG(ERR, "Failed to create meter policer drop rule.");
                goto error_exit;
        }
        return 0;
error_exit:
        return -1;
}

/**
 * Create the needed meter and suffix tables.
 * Lock free, (mutex should be acquired by caller).
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] fm
 *   Pointer to the flow meter.
 *
 * @return
 *   Pointer to table set on success, NULL otherwise and rte_errno is set.
 */
static struct mlx5_meter_domains_infos *
flow_dv_create_mtr_tbl(struct rte_eth_dev *dev,
                       const struct mlx5_flow_meter *fm)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_meter_domains_infos *mtb;
        int ret;
        int i;

        if (!priv->mtr_en) {
                rte_errno = ENOTSUP;
                return NULL;
        }
        mtb = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*mtb), 0, SOCKET_ID_ANY);
        if (!mtb) {
                DRV_LOG(ERR, "Failed to allocate memory for meter.");
                return NULL;
        }
        /* Create meter count actions */
        for (i = 0; i <= RTE_MTR_DROPPED; i++) {
                struct mlx5_flow_counter *cnt;
                if (!fm->policer_stats.cnt[i])
                        continue;
                cnt = flow_dv_counter_get_by_idx(dev,
                      fm->policer_stats.cnt[i], NULL);
                mtb->count_actns[i] = cnt->action;
        }
        /* Create drop action. */
        ret = mlx5_flow_os_create_flow_action_drop(&mtb->drop_actn);
        if (ret) {
                DRV_LOG(ERR, "Failed to create drop action.");
                goto error_exit;
        }
        /* Egress meter table. */
        ret = flow_dv_prepare_mtr_tables(dev, mtb, 1, 0, priv->mtr_color_reg);
        if (ret) {
                DRV_LOG(ERR, "Failed to prepare egress meter table.");
                goto error_exit;
        }
        /* Ingress meter table. */
        ret = flow_dv_prepare_mtr_tables(dev, mtb, 0, 0, priv->mtr_color_reg);
        if (ret) {
                DRV_LOG(ERR, "Failed to prepare ingress meter table.");
                goto error_exit;
        }
        /* FDB meter table. */
        if (priv->config.dv_esw_en) {
                ret = flow_dv_prepare_mtr_tables(dev, mtb, 0, 1,
                                                 priv->mtr_color_reg);
                if (ret) {
                        DRV_LOG(ERR, "Failed to prepare fdb meter table.");
                        goto error_exit;
                }
        }
        return mtb;
error_exit:
        flow_dv_destroy_mtr_tbl(dev, mtb);
        return NULL;
}

/**
 * Destroy domain policer rule.
 *
 * @param[in] dt
 *   Pointer to domain table.
 */
static void
flow_dv_destroy_domain_policer_rule(struct mlx5_meter_domain_info *dt)
{
        int i;

        for (i = 0; i < RTE_MTR_DROPPED; i++) {
                if (dt->policer_rules[i]) {
                        claim_zero(mlx5_flow_os_destroy_flow
                                   (dt->policer_rules[i]));
                        dt->policer_rules[i] = NULL;
                }
        }
        if (dt->jump_actn) {
                claim_zero(mlx5_flow_os_destroy_flow_action(dt->jump_actn));
                dt->jump_actn = NULL;
        }
}

/**
 * Destroy policer rules.
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] fm
 *   Pointer to flow meter structure.
 * @param[in] attr
 *   Pointer to flow attributes.
 *
 * @return
 *   Always 0.
 */
static int
flow_dv_destroy_policer_rules(struct rte_eth_dev *dev __rte_unused,
                              const struct mlx5_flow_meter *fm,
                              const struct rte_flow_attr *attr)
{
        struct mlx5_meter_domains_infos *mtb = fm ? fm->mfts : NULL;

        if (!mtb)
                return 0;
        if (attr->egress)
                flow_dv_destroy_domain_policer_rule(&mtb->egress);
        if (attr->ingress)
                flow_dv_destroy_domain_policer_rule(&mtb->ingress);
        if (attr->transfer)
                flow_dv_destroy_domain_policer_rule(&mtb->transfer);
        return 0;
}

/**
 * Create specify domain meter policer rule.
 *
 * @param[in] fm
 *   Pointer to flow meter structure.
 * @param[in] mtb
 *   Pointer to DV meter table set.
 * @param[in] mtr_reg_c
 *   Color match REG_C.
 *
 * @return
 *   0 on success, -1 otherwise.
 */
static int
flow_dv_create_policer_forward_rule(struct mlx5_flow_meter *fm,
                                    struct mlx5_meter_domain_info *dtb,
                                    uint8_t mtr_reg_c)
{
        struct mlx5_flow_dv_match_params matcher = {
                .size = sizeof(matcher.buf),
        };
        struct mlx5_flow_dv_match_params value = {
                .size = sizeof(value.buf),
        };
        struct mlx5_meter_domains_infos *mtb = fm->mfts;
        void *actions[METER_ACTIONS];
        int i;
        int ret = 0;

        /* Create jump action. */
        if (!dtb->jump_actn)
                ret = mlx5_flow_os_create_flow_action_dest_flow_tbl
                                (dtb->sfx_tbl->obj, &dtb->jump_actn);
        if (ret) {
                DRV_LOG(ERR, "Failed to create policer jump action.");
                goto error;
        }
        for (i = 0; i < RTE_MTR_DROPPED; i++) {
                int j = 0;

                flow_dv_match_meta_reg(matcher.buf, value.buf, mtr_reg_c,
                                       rte_col_2_mlx5_col(i), UINT8_MAX);
                if (mtb->count_actns[i])
                        actions[j++] = mtb->count_actns[i];
                if (fm->action[i] == MTR_POLICER_ACTION_DROP)
                        actions[j++] = mtb->drop_actn;
                else
                        actions[j++] = dtb->jump_actn;
                ret = mlx5_flow_os_create_flow(dtb->color_matcher,
                                               (void *)&value, j, actions,
                                               &dtb->policer_rules[i]);
                if (ret) {
                        DRV_LOG(ERR, "Failed to create policer rule.");
                        goto error;
                }
        }
        return 0;
error:
        rte_errno = errno;
        return -1;
}

/**
 * Create policer rules.
 *
 * @param[in] dev
 *   Pointer to Ethernet device.
 * @param[in] fm
 *   Pointer to flow meter structure.
 * @param[in] attr
 *   Pointer to flow attributes.
 *
 * @return
 *   0 on success, -1 otherwise.
 */
static int
flow_dv_create_policer_rules(struct rte_eth_dev *dev,
                             struct mlx5_flow_meter *fm,
                             const struct rte_flow_attr *attr)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_meter_domains_infos *mtb = fm->mfts;
        int ret;

        if (attr->egress) {
                ret = flow_dv_create_policer_forward_rule(fm, &mtb->egress,
                                                priv->mtr_color_reg);
                if (ret) {
                        DRV_LOG(ERR, "Failed to create egress policer.");
                        goto error;
                }
        }
        if (attr->ingress) {
                ret = flow_dv_create_policer_forward_rule(fm, &mtb->ingress,
                                                priv->mtr_color_reg);
                if (ret) {
                        DRV_LOG(ERR, "Failed to create ingress policer.");
                        goto error;
                }
        }
        if (attr->transfer) {
                ret = flow_dv_create_policer_forward_rule(fm, &mtb->transfer,
                                                priv->mtr_color_reg);
                if (ret) {
                        DRV_LOG(ERR, "Failed to create transfer policer.");
                        goto error;
                }
        }
        return 0;
error:
        flow_dv_destroy_policer_rules(dev, fm, attr);
        return -1;
}

/**
 * Validate the batch counter support in root table.
 *
 * Create a simple flow with invalid counter and drop action on root table to
 * validate if batch counter with offset on root table is supported or not.
 *
 * @param[in] dev
 *   Pointer to rte_eth_dev structure.
 *
 * @return
 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
int
mlx5_flow_dv_discover_counter_offset_support(struct rte_eth_dev *dev)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_ctx_shared *sh = priv->sh;
        struct mlx5_flow_dv_match_params mask = {
                .size = sizeof(mask.buf),
        };
        struct mlx5_flow_dv_match_params value = {
                .size = sizeof(value.buf),
        };
        struct mlx5dv_flow_matcher_attr dv_attr = {
                .type = IBV_FLOW_ATTR_NORMAL,
                .priority = 0,
                .match_criteria_enable = 0,
                .match_mask = (void *)&mask,
        };
        void *actions[2] = { 0 };
        struct mlx5_flow_tbl_resource *tbl = NULL, *dest_tbl = NULL;
        struct mlx5_devx_obj *dcs = NULL;
        void *matcher = NULL;
        void *flow = NULL;
        int i, ret = -1;

        tbl = flow_dv_tbl_resource_get(dev, 0, 0, 0, false, NULL, 0, NULL);
        if (!tbl)
                goto err;
        dest_tbl = flow_dv_tbl_resource_get(dev, 1, 0, 0, false, NULL, 0, NULL);
        if (!dest_tbl)
                goto err;
        dcs = mlx5_devx_cmd_flow_counter_alloc(priv->sh->ctx, 0x4);
        if (!dcs)
                goto err;
        ret = mlx5_flow_os_create_flow_action_count(dcs->obj, UINT16_MAX,
                                                    &actions[0]);
        if (ret)
                goto err;
        ret = mlx5_flow_os_create_flow_action_dest_flow_tbl
                                (dest_tbl->obj, &actions[1]);
        if (ret)
                goto err;
        dv_attr.match_criteria_enable = flow_dv_matcher_enable(mask.buf);
        ret = mlx5_flow_os_create_flow_matcher(sh->ctx, &dv_attr, tbl->obj,
                                               &matcher);
        if (ret)
                goto err;
        ret = mlx5_flow_os_create_flow(matcher, (void *)&value, 2,
                                       actions, &flow);
err:
        /*
         * If batch counter with offset is not supported, the driver will not
         * validate the invalid offset value, flow create should success.
         * In this case, it means batch counter is not supported in root table.
         *
         * Otherwise, if flow create is failed, counter offset is supported.
         */
        if (flow) {
                DRV_LOG(INFO, "Batch counter is not supported in root "
                              "table. Switch to fallback mode.");
                rte_errno = ENOTSUP;
                ret = -rte_errno;
                claim_zero(mlx5_flow_os_destroy_flow(flow));
        } else {
                /* Check matcher to make sure validate fail at flow create. */
                if (!matcher || (matcher && errno != EINVAL))
                        DRV_LOG(ERR, "Unexpected error in counter offset "
                                     "support detection");
                ret = 0;
        }
        for (i = 0; i < 2; i++) {
                if (actions[i])
                        claim_zero(mlx5_flow_os_destroy_flow_action
                                   (actions[i]));
        }
        if (matcher)
                claim_zero(mlx5_flow_os_destroy_flow_matcher(matcher));
        if (tbl)
                flow_dv_tbl_resource_release(dev, tbl);
        if (dest_tbl)
                flow_dv_tbl_resource_release(dev, dest_tbl);
        if (dcs)
                claim_zero(mlx5_devx_cmd_destroy(dcs));
        return ret;
}

/**
 * Query a devx counter.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] cnt
 *   Index to the flow counter.
 * @param[in] clear
 *   Set to clear the counter statistics.
 * @param[out] pkts
 *   The statistics value of packets.
 * @param[out] bytes
 *   The statistics value of bytes.
 *
 * @return
 *   0 on success, otherwise return -1.
 */
static int
flow_dv_counter_query(struct rte_eth_dev *dev, uint32_t counter, bool clear,
                      uint64_t *pkts, uint64_t *bytes)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_flow_counter *cnt;
        uint64_t inn_pkts, inn_bytes;
        int ret;

        if (!priv->config.devx)
                return -1;

        ret = _flow_dv_query_count(dev, counter, &inn_pkts, &inn_bytes);
        if (ret)
                return -1;
        cnt = flow_dv_counter_get_by_idx(dev, counter, NULL);
        *pkts = inn_pkts - cnt->hits;
        *bytes = inn_bytes - cnt->bytes;
        if (clear) {
                cnt->hits = inn_pkts;
                cnt->bytes = inn_bytes;
        }
        return 0;
}

/**
 * Get aged-out flows.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] context
 *   The address of an array of pointers to the aged-out flows contexts.
 * @param[in] nb_contexts
 *   The length of context array pointers.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   how many contexts get in success, otherwise negative errno value.
 *   if nb_contexts is 0, return the amount of all aged contexts.
 *   if nb_contexts is not 0 , return the amount of aged flows reported
 *   in the context array.
 * @note: only stub for now
 */
static int
flow_get_aged_flows(struct rte_eth_dev *dev,
                    void **context,
                    uint32_t nb_contexts,
                    struct rte_flow_error *error)
{
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_age_info *age_info;
        struct mlx5_age_param *age_param;
        struct mlx5_flow_counter *counter;
        int nb_flows = 0;

        if (nb_contexts && !context)
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
                                          NULL,
                                          "Should assign at least one flow or"
                                          " context to get if nb_contexts != 0");
        age_info = GET_PORT_AGE_INFO(priv);
        rte_spinlock_lock(&age_info->aged_sl);
        TAILQ_FOREACH(counter, &age_info->aged_counters, next) {
                nb_flows++;
                if (nb_contexts) {
                        age_param = MLX5_CNT_TO_AGE(counter);
                        context[nb_flows - 1] = age_param->context;
                        if (!(--nb_contexts))
                                break;
                }
        }
        rte_spinlock_unlock(&age_info->aged_sl);
        MLX5_AGE_SET(age_info, MLX5_AGE_TRIGGER);
        return nb_flows;
}

/*
 * Mutex-protected thunk to lock-free  __flow_dv_translate().
 */
static int
flow_dv_translate(struct rte_eth_dev *dev,
                  struct mlx5_flow *dev_flow,
                  const struct rte_flow_attr *attr,
                  const struct rte_flow_item items[],
                  const struct rte_flow_action actions[],
                  struct rte_flow_error *error)
{
        int ret;

        flow_dv_shared_lock(dev);
        ret = __flow_dv_translate(dev, dev_flow, attr, items, actions, error);
        flow_dv_shared_unlock(dev);
        return ret;
}

/*
 * Mutex-protected thunk to lock-free  __flow_dv_apply().
 */
static int
flow_dv_apply(struct rte_eth_dev *dev,
              struct rte_flow *flow,
              struct rte_flow_error *error)
{
        int ret;

        flow_dv_shared_lock(dev);
        ret = __flow_dv_apply(dev, flow, error);
        flow_dv_shared_unlock(dev);
        return ret;
}

/*
 * Mutex-protected thunk to lock-free __flow_dv_remove().
 */
static void
flow_dv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
{
        flow_dv_shared_lock(dev);
        __flow_dv_remove(dev, flow);
        flow_dv_shared_unlock(dev);
}

/*
 * Mutex-protected thunk to lock-free __flow_dv_destroy().
 */
static void
flow_dv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
{
        flow_dv_shared_lock(dev);
        __flow_dv_destroy(dev, flow);
        flow_dv_shared_unlock(dev);
}

/*
 * Mutex-protected thunk to lock-free flow_dv_counter_alloc().
 */
static uint32_t
flow_dv_counter_allocate(struct rte_eth_dev *dev)
{
        uint32_t cnt;

        flow_dv_shared_lock(dev);
        cnt = flow_dv_counter_alloc(dev, 0);
        flow_dv_shared_unlock(dev);
        return cnt;
}

/*
 * Mutex-protected thunk to lock-free flow_dv_counter_release().
 */
static void
flow_dv_counter_free(struct rte_eth_dev *dev, uint32_t cnt)
{
        flow_dv_shared_lock(dev);
        flow_dv_counter_release(dev, cnt);
        flow_dv_shared_unlock(dev);
}

/**
 * Validate shared action.
 * Dispatcher for action type specific validation.
 *
 * @param[in] dev
 *   Pointer to the Ethernet device structure.
 * @param[in] conf
 *   Shared action configuration.
 * @param[in] action
 *   The shared action object to validate.
 * @param[out] error
 *   Perform verbose error reporting if not NULL. Initialized in case of
 *   error only.
 *
 * @return
 *   0 on success, otherwise negative errno value.
 */
static int
flow_dv_action_validate(struct rte_eth_dev *dev,
                        const struct rte_flow_shared_action_conf *conf,
                        const struct rte_flow_action *action,
                        struct rte_flow_error *error)
{
        RTE_SET_USED(conf);
        switch (action->type) {
        case RTE_FLOW_ACTION_TYPE_RSS:
                return mlx5_validate_action_rss(dev, action, error);
        default:
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ACTION,
                                          NULL,
                                          "action type not supported");
        }
}

/*
 * Mutex-protected thunk to lock-free  __flow_dv_action_create().
 */
static struct rte_flow_shared_action *
flow_dv_action_create(struct rte_eth_dev *dev,
                      const struct rte_flow_shared_action_conf *conf,
                      const struct rte_flow_action *action,
                      struct rte_flow_error *error)
{
        struct rte_flow_shared_action *shared_action = NULL;

        flow_dv_shared_lock(dev);
        shared_action = __flow_dv_action_create(dev, conf, action, error);
        flow_dv_shared_unlock(dev);
        return shared_action;
}

/*
 * Mutex-protected thunk to lock-free  __flow_dv_action_destroy().
 */
static int
flow_dv_action_destroy(struct rte_eth_dev *dev,
                       struct rte_flow_shared_action *action,
                       struct rte_flow_error *error)
{
        int ret;

        flow_dv_shared_lock(dev);
        ret = __flow_dv_action_destroy(dev, action, error);
        flow_dv_shared_unlock(dev);
        return ret;
}

/*
 * Mutex-protected thunk to lock-free  __flow_dv_action_update().
 */
static int
flow_dv_action_update(struct rte_eth_dev *dev,
                      struct rte_flow_shared_action *action,
                      const void *action_conf,
                      struct rte_flow_error *error)
{
        int ret;

        flow_dv_shared_lock(dev);
        ret = __flow_dv_action_update(dev, action, action_conf,
                                      error);
        flow_dv_shared_unlock(dev);
        return ret;
}

const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops = {
        .validate = flow_dv_validate,
        .prepare = flow_dv_prepare,
        .translate = flow_dv_translate,
        .apply = flow_dv_apply,
        .remove = flow_dv_remove,
        .destroy = flow_dv_destroy,
        .query = flow_dv_query,
        .create_mtr_tbls = flow_dv_create_mtr_tbl,
        .destroy_mtr_tbls = flow_dv_destroy_mtr_tbl,
        .create_policer_rules = flow_dv_create_policer_rules,
        .destroy_policer_rules = flow_dv_destroy_policer_rules,
        .counter_alloc = flow_dv_counter_allocate,
        .counter_free = flow_dv_counter_free,
        .counter_query = flow_dv_counter_query,
        .get_aged_flows = flow_get_aged_flows,
        .action_validate = flow_dv_action_validate,
        .action_create = flow_dv_action_create,
        .action_destroy = flow_dv_action_destroy,
        .action_update = flow_dv_action_update,
};

#endif /* HAVE_IBV_FLOW_DV_SUPPORT */