net/mlx5: standardize on negative errno values
[dpdk.git] / drivers / net / mlx5 / mlx5_rxq.c
index 057156d..477aa26 100644 (file)
@@ -1,34 +1,6 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright 2015 6WIND S.A.
- *   Copyright 2015 Mellanox.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of 6WIND S.A. nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2015 6WIND S.A.
+ * Copyright 2015 Mellanox.
  */
 
 #include <stddef.h>
@@ -52,7 +24,7 @@
 
 #include <rte_mbuf.h>
 #include <rte_malloc.h>
-#include <rte_ethdev.h>
+#include <rte_ethdev_driver.h>
 #include <rte_common.h>
 #include <rte_interrupts.h>
 #include <rte_debug.h>
@@ -63,6 +35,7 @@
 #include "mlx5_utils.h"
 #include "mlx5_autoconf.h"
 #include "mlx5_defs.h"
+#include "mlx5_glue.h"
 
 /* Default RSS hash key also used for ConnectX-3. */
 uint8_t rss_hash_default_key[] = {
@@ -88,7 +61,7 @@ const size_t rss_hash_default_key_len = sizeof(rss_hash_default_key);
  *   Pointer to RX queue structure.
  *
  * @return
- *   0 on success, errno value on failure.
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 int
 rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
@@ -96,7 +69,7 @@ rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
        const unsigned int sges_n = 1 << rxq_ctrl->rxq.sges_n;
        unsigned int elts_n = 1 << rxq_ctrl->rxq.elts_n;
        unsigned int i;
-       int ret = 0;
+       int err;
 
        /* Iterate on segments. */
        for (i = 0; (i != elts_n); ++i) {
@@ -105,7 +78,7 @@ rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
                buf = rte_pktmbuf_alloc(rxq_ctrl->rxq.mp);
                if (buf == NULL) {
                        ERROR("%p: empty mbuf pool", (void *)rxq_ctrl);
-                       ret = ENOMEM;
+                       rte_errno = ENOMEM;
                        goto error;
                }
                /* Headroom is reserved by rte_pktmbuf_alloc(). */
@@ -124,7 +97,7 @@ rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
                (*rxq_ctrl->rxq.elts)[i] = buf;
        }
        /* If Rx vector is activated. */
-       if (rxq_check_vec_support(&rxq_ctrl->rxq) > 0) {
+       if (mlx5_rxq_check_vec_support(&rxq_ctrl->rxq) > 0) {
                struct mlx5_rxq_data *rxq = &rxq_ctrl->rxq;
                struct rte_mbuf *mbuf_init = &rxq->fake_mbuf;
                int j;
@@ -147,9 +120,9 @@ rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
        }
        DEBUG("%p: allocated and configured %u segments (max %u packets)",
              (void *)rxq_ctrl, elts_n, elts_n / (1 << rxq_ctrl->rxq.sges_n));
-       assert(ret == 0);
        return 0;
 error:
+       err = rte_errno; /* Save rte_errno before cleanup. */
        elts_n = i;
        for (i = 0; (i != elts_n); ++i) {
                if ((*rxq_ctrl->rxq.elts)[i] != NULL)
@@ -157,8 +130,8 @@ error:
                (*rxq_ctrl->rxq.elts)[i] = NULL;
        }
        DEBUG("%p: failed, freed everything", (void *)rxq_ctrl);
-       assert(ret > 0);
-       return ret;
+       rte_errno = err; /* Restore rte_errno. */
+       return -rte_errno;
 }
 
 /**
@@ -183,7 +156,7 @@ rxq_free_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
         * Some mbuf in the Ring belongs to the application.  They cannot be
         * freed.
         */
-       if (rxq_check_vec_support(rxq) > 0) {
+       if (mlx5_rxq_check_vec_support(rxq) > 0) {
                for (i = 0; i < used; ++i)
                        (*rxq->elts)[(rxq->rq_ci + i) & q_mask] = NULL;
                rxq->rq_pi = rxq->rq_ci;
@@ -208,10 +181,80 @@ mlx5_rxq_cleanup(struct mlx5_rxq_ctrl *rxq_ctrl)
 {
        DEBUG("cleaning up %p", (void *)rxq_ctrl);
        if (rxq_ctrl->ibv)
-               mlx5_priv_rxq_ibv_release(rxq_ctrl->priv, rxq_ctrl->ibv);
+               mlx5_rxq_ibv_release(rxq_ctrl->ibv);
        memset(rxq_ctrl, 0, sizeof(*rxq_ctrl));
 }
 
+/**
+ * Returns the per-queue supported offloads.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ *
+ * @return
+ *   Supported Rx offloads.
+ */
+uint64_t
+mlx5_get_rx_queue_offloads(struct rte_eth_dev *dev)
+{
+       struct priv *priv = dev->data->dev_private;
+       struct mlx5_dev_config *config = &priv->config;
+       uint64_t offloads = (DEV_RX_OFFLOAD_SCATTER |
+                            DEV_RX_OFFLOAD_TIMESTAMP |
+                            DEV_RX_OFFLOAD_JUMBO_FRAME);
+
+       if (config->hw_fcs_strip)
+               offloads |= DEV_RX_OFFLOAD_CRC_STRIP;
+       if (config->hw_csum)
+               offloads |= (DEV_RX_OFFLOAD_IPV4_CKSUM |
+                            DEV_RX_OFFLOAD_UDP_CKSUM |
+                            DEV_RX_OFFLOAD_TCP_CKSUM);
+       if (config->hw_vlan_strip)
+               offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+       return offloads;
+}
+
+
+/**
+ * Returns the per-port supported offloads.
+ *
+ * @return
+ *   Supported Rx offloads.
+ */
+uint64_t
+mlx5_get_rx_port_offloads(void)
+{
+       uint64_t offloads = DEV_RX_OFFLOAD_VLAN_FILTER;
+
+       return offloads;
+}
+
+/**
+ * Checks if the per-queue offload configuration is valid.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param offloads
+ *   Per-queue offloads configuration.
+ *
+ * @return
+ *   1 if the configuration is valid, 0 otherwise.
+ */
+static int
+mlx5_is_rx_queue_offloads_allowed(struct rte_eth_dev *dev, uint64_t offloads)
+{
+       uint64_t port_offloads = dev->data->dev_conf.rxmode.offloads;
+       uint64_t queue_supp_offloads = mlx5_get_rx_queue_offloads(dev);
+       uint64_t port_supp_offloads = mlx5_get_rx_port_offloads();
+
+       if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
+           offloads)
+               return 0;
+       if (((port_offloads ^ offloads) & port_supp_offloads))
+               return 0;
+       return 1;
+}
+
 /**
  *
  * @param dev
@@ -228,7 +271,7 @@ mlx5_rxq_cleanup(struct mlx5_rxq_ctrl *rxq_ctrl)
  *   Memory pool for buffer allocations.
  *
  * @return
- *   0 on success, negative errno value on failure.
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 int
 mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
@@ -239,10 +282,7 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
        struct mlx5_rxq_data *rxq = (*priv->rxqs)[idx];
        struct mlx5_rxq_ctrl *rxq_ctrl =
                container_of(rxq, struct mlx5_rxq_ctrl, rxq);
-       int ret = 0;
 
-       (void)conf;
-       priv_lock(priv);
        if (!rte_is_power_of_2(desc)) {
                desc = 1 << log2above(desc);
                WARN("%p: increased number of descriptors in RX queue %u"
@@ -254,29 +294,37 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
        if (idx >= priv->rxqs_n) {
                ERROR("%p: queue index out of range (%u >= %u)",
                      (void *)dev, idx, priv->rxqs_n);
-               priv_unlock(priv);
-               return -EOVERFLOW;
+               rte_errno = EOVERFLOW;
+               return -rte_errno;
+       }
+       if (!mlx5_is_rx_queue_offloads_allowed(dev, conf->offloads)) {
+               ERROR("%p: Rx queue offloads 0x%" PRIx64 " don't match port "
+                     "offloads 0x%" PRIx64 " or supported offloads 0x%" PRIx64,
+                     (void *)dev, conf->offloads,
+                     dev->data->dev_conf.rxmode.offloads,
+                     (mlx5_get_rx_port_offloads() |
+                      mlx5_get_rx_queue_offloads(dev)));
+               rte_errno = ENOTSUP;
+               return -rte_errno;
        }
-       if (!mlx5_priv_rxq_releasable(priv, idx)) {
-               ret = EBUSY;
+       if (!mlx5_rxq_releasable(dev, idx)) {
                ERROR("%p: unable to release queue index %u",
                      (void *)dev, idx);
-               goto out;
+               rte_errno = EBUSY;
+               return -rte_errno;
        }
-       mlx5_priv_rxq_release(priv, idx);
-       rxq_ctrl = mlx5_priv_rxq_new(priv, idx, desc, socket, mp);
+       mlx5_rxq_release(dev, idx);
+       rxq_ctrl = mlx5_rxq_new(dev, idx, desc, socket, conf, mp);
        if (!rxq_ctrl) {
                ERROR("%p: unable to allocate queue index %u",
                      (void *)dev, idx);
-               ret = ENOMEM;
-               goto out;
+               rte_errno = ENOMEM;
+               return -rte_errno;
        }
        DEBUG("%p: adding RX queue %p to list",
              (void *)dev, (void *)rxq_ctrl);
        (*priv->rxqs)[idx] = &rxq_ctrl->rxq;
-out:
-       priv_unlock(priv);
-       return -ret;
+       return 0;
 }
 
 /**
@@ -296,26 +344,25 @@ mlx5_rx_queue_release(void *dpdk_rxq)
                return;
        rxq_ctrl = container_of(rxq, struct mlx5_rxq_ctrl, rxq);
        priv = rxq_ctrl->priv;
-       priv_lock(priv);
-       if (!mlx5_priv_rxq_releasable(priv, rxq_ctrl->rxq.stats.idx))
+       if (!mlx5_rxq_releasable(priv->dev, rxq_ctrl->rxq.stats.idx))
                rte_panic("Rx queue %p is still used by a flow and cannot be"
                          " removed\n", (void *)rxq_ctrl);
-       mlx5_priv_rxq_release(priv, rxq_ctrl->rxq.stats.idx);
-       priv_unlock(priv);
+       mlx5_rxq_release(priv->dev, rxq_ctrl->rxq.stats.idx);
 }
 
 /**
  * Allocate queue vector and fill epoll fd list for Rx interrupts.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
  * @return
- *   0 on success, negative on failure.
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 int
-priv_rx_intr_vec_enable(struct priv *priv)
+mlx5_rx_intr_vec_enable(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        unsigned int i;
        unsigned int rxqs_n = priv->rxqs_n;
        unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID);
@@ -324,17 +371,18 @@ priv_rx_intr_vec_enable(struct priv *priv)
 
        if (!priv->dev->data->dev_conf.intr_conf.rxq)
                return 0;
-       priv_rx_intr_vec_disable(priv);
+       mlx5_rx_intr_vec_disable(dev);
        intr_handle->intr_vec = malloc(n * sizeof(intr_handle->intr_vec[0]));
        if (intr_handle->intr_vec == NULL) {
                ERROR("failed to allocate memory for interrupt vector,"
                      " Rx interrupts will not be supported");
-               return -ENOMEM;
+               rte_errno = ENOMEM;
+               return -rte_errno;
        }
        intr_handle->type = RTE_INTR_HANDLE_EXT;
        for (i = 0; i != n; ++i) {
                /* This rxq ibv must not be released in this function. */
-               struct mlx5_rxq_ibv *rxq_ibv = mlx5_priv_rxq_ibv_get(priv, i);
+               struct mlx5_rxq_ibv *rxq_ibv = mlx5_rxq_ibv_get(dev, i);
                int fd;
                int flags;
                int rc;
@@ -351,24 +399,26 @@ priv_rx_intr_vec_enable(struct priv *priv)
                        ERROR("too many Rx queues for interrupt vector size"
                              " (%d), Rx interrupts cannot be enabled",
                              RTE_MAX_RXTX_INTR_VEC_ID);
-                       priv_rx_intr_vec_disable(priv);
-                       return -1;
+                       mlx5_rx_intr_vec_disable(dev);
+                       rte_errno = ENOMEM;
+                       return -rte_errno;
                }
                fd = rxq_ibv->channel->fd;
                flags = fcntl(fd, F_GETFL);
                rc = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
                if (rc < 0) {
+                       rte_errno = errno;
                        ERROR("failed to make Rx interrupt file descriptor"
                              " %d non-blocking for queue index %d", fd, i);
-                       priv_rx_intr_vec_disable(priv);
-                       return -1;
+                       mlx5_rx_intr_vec_disable(dev);
+                       return -rte_errno;
                }
                intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + count;
                intr_handle->efds[count] = fd;
                count++;
        }
        if (!count)
-               priv_rx_intr_vec_disable(priv);
+               mlx5_rx_intr_vec_disable(dev);
        else
                intr_handle->nb_efd = count;
        return 0;
@@ -377,12 +427,13 @@ priv_rx_intr_vec_enable(struct priv *priv)
 /**
  * Clean up Rx interrupts handler.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  */
 void
-priv_rx_intr_vec_disable(struct priv *priv)
+mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        struct rte_intr_handle *intr_handle = priv->dev->intr_handle;
        unsigned int i;
        unsigned int rxqs_n = priv->rxqs_n;
@@ -405,7 +456,7 @@ priv_rx_intr_vec_disable(struct priv *priv)
                 */
                rxq_data = (*priv->rxqs)[i];
                rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
-               mlx5_priv_rxq_ibv_release(priv, rxq_ctrl->ibv);
+               mlx5_rxq_ibv_release(rxq_ctrl->ibv);
        }
 free:
        rte_intr_free_epoll_fd(intr_handle);
@@ -436,7 +487,6 @@ mlx5_arm_cq(struct mlx5_rxq_data *rxq, int sq_n_rxq)
        doorbell = (uint64_t)doorbell_hi << 32;
        doorbell |=  rxq->cqn;
        rxq->cq_db[MLX5_CQ_ARM_DB] = rte_cpu_to_be_32(doorbell_hi);
-       rte_wmb();
        rte_write64(rte_cpu_to_be_64(doorbell), cq_db_reg);
 }
 
@@ -449,7 +499,7 @@ mlx5_arm_cq(struct mlx5_rxq_data *rxq, int sq_n_rxq)
  *   Rx queue number.
  *
  * @return
- *   0 on success, negative on failure.
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 int
 mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
@@ -457,31 +507,25 @@ mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
        struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_data *rxq_data;
        struct mlx5_rxq_ctrl *rxq_ctrl;
-       int ret = 0;
 
-       priv_lock(priv);
        rxq_data = (*priv->rxqs)[rx_queue_id];
        if (!rxq_data) {
-               ret = EINVAL;
-               goto exit;
+               rte_errno = EINVAL;
+               return -rte_errno;
        }
        rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
        if (rxq_ctrl->irq) {
                struct mlx5_rxq_ibv *rxq_ibv;
 
-               rxq_ibv = mlx5_priv_rxq_ibv_get(priv, rx_queue_id);
+               rxq_ibv = mlx5_rxq_ibv_get(dev, rx_queue_id);
                if (!rxq_ibv) {
-                       ret = EINVAL;
-                       goto exit;
+                       rte_errno = EINVAL;
+                       return -rte_errno;
                }
                mlx5_arm_cq(rxq_data, rxq_data->cq_arm_sn);
-               mlx5_priv_rxq_ibv_release(priv, rxq_ibv);
+               mlx5_rxq_ibv_release(rxq_ibv);
        }
-exit:
-       priv_unlock(priv);
-       if (ret)
-               WARN("unable to arm interrupt on rx queue %d", rx_queue_id);
-       return -ret;
+       return 0;
 }
 
 /**
@@ -493,7 +537,7 @@ exit:
  *   Rx queue number.
  *
  * @return
- *   0 on success, negative on failure.
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 int
 mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
@@ -504,53 +548,53 @@ mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
        struct mlx5_rxq_ibv *rxq_ibv = NULL;
        struct ibv_cq *ev_cq;
        void *ev_ctx;
-       int ret = 0;
+       int ret;
 
-       priv_lock(priv);
        rxq_data = (*priv->rxqs)[rx_queue_id];
        if (!rxq_data) {
-               ret = EINVAL;
-               goto exit;
+               rte_errno = EINVAL;
+               return -rte_errno;
        }
        rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
        if (!rxq_ctrl->irq)
-               goto exit;
-       rxq_ibv = mlx5_priv_rxq_ibv_get(priv, rx_queue_id);
+               return 0;
+       rxq_ibv = mlx5_rxq_ibv_get(dev, rx_queue_id);
        if (!rxq_ibv) {
-               ret = EINVAL;
-               goto exit;
+               rte_errno = EINVAL;
+               return -rte_errno;
        }
-       ret = ibv_get_cq_event(rxq_ibv->channel, &ev_cq, &ev_ctx);
+       ret = mlx5_glue->get_cq_event(rxq_ibv->channel, &ev_cq, &ev_ctx);
        if (ret || ev_cq != rxq_ibv->cq) {
-               ret = EINVAL;
+               rte_errno = EINVAL;
                goto exit;
        }
        rxq_data->cq_arm_sn++;
-       ibv_ack_cq_events(rxq_ibv->cq, 1);
+       mlx5_glue->ack_cq_events(rxq_ibv->cq, 1);
+       return 0;
 exit:
+       ret = rte_errno; /* Save rte_errno before cleanup. */
        if (rxq_ibv)
-               mlx5_priv_rxq_ibv_release(priv, rxq_ibv);
-       priv_unlock(priv);
-       if (ret)
-               WARN("unable to disable interrupt on rx queue %d",
-                    rx_queue_id);
-       return -ret;
+               mlx5_rxq_ibv_release(rxq_ibv);
+       WARN("unable to disable interrupt on rx queue %d", rx_queue_id);
+       rte_errno = ret; /* Restore rte_errno. */
+       return -rte_errno;
 }
 
 /**
  * Create the Rx queue Verbs object.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   Queue index in DPDK Rx queue array
  *
  * @return
- *   The Verbs object initialised if it can be created.
+ *   The Verbs object initialised, NULL otherwise and rte_errno is set.
  */
-struct mlx5_rxq_ibv*
-mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
+struct mlx5_rxq_ibv *
+mlx5_rxq_ibv_new(struct rte_eth_dev *dev, uint16_t idx)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
        struct mlx5_rxq_ctrl *rxq_ctrl =
                container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
@@ -574,28 +618,32 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
 
        assert(rxq_data);
        assert(!rxq_ctrl->ibv);
+       priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_RX_QUEUE;
+       priv->verbs_alloc_ctx.obj = rxq_ctrl;
        tmpl = rte_calloc_socket(__func__, 1, sizeof(*tmpl), 0,
                                 rxq_ctrl->socket);
        if (!tmpl) {
                ERROR("%p: cannot allocate verbs resources",
                       (void *)rxq_ctrl);
+               rte_errno = ENOMEM;
                goto error;
        }
        tmpl->rxq_ctrl = rxq_ctrl;
        /* Use the entire RX mempool as the memory region. */
-       tmpl->mr = priv_mr_get(priv, rxq_data->mp);
+       tmpl->mr = mlx5_mr_get(dev, rxq_data->mp);
        if (!tmpl->mr) {
-               tmpl->mr = priv_mr_new(priv, rxq_data->mp);
+               tmpl->mr = mlx5_mr_new(dev, rxq_data->mp);
                if (!tmpl->mr) {
                        ERROR("%p: MR creation failure", (void *)rxq_ctrl);
                        goto error;
                }
        }
        if (rxq_ctrl->irq) {
-               tmpl->channel = ibv_create_comp_channel(priv->ctx);
+               tmpl->channel = mlx5_glue->create_comp_channel(priv->ctx);
                if (!tmpl->channel) {
                        ERROR("%p: Comp Channel creation failure",
                              (void *)rxq_ctrl);
+                       rte_errno = ENOMEM;
                        goto error;
                }
        }
@@ -615,15 +663,17 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
                 * For vectorized Rx, it must not be doubled in order to
                 * make cq_ci and rq_ci aligned.
                 */
-               if (rxq_check_vec_support(rxq_data) < 0)
+               if (mlx5_rxq_check_vec_support(rxq_data) < 0)
                        attr.cq.ibv.cqe *= 2;
        } else if (config->cqe_comp && rxq_data->hw_timestamp) {
                DEBUG("Rx CQE compression is disabled for HW timestamp");
        }
-       tmpl->cq = ibv_cq_ex_to_cq(mlx5dv_create_cq(priv->ctx, &attr.cq.ibv,
-                                                   &attr.cq.mlx5));
+       tmpl->cq = mlx5_glue->cq_ex_to_cq
+               (mlx5_glue->dv_create_cq(priv->ctx, &attr.cq.ibv,
+                                        &attr.cq.mlx5));
        if (tmpl->cq == NULL) {
                ERROR("%p: CQ creation failure", (void *)rxq_ctrl);
+               rte_errno = ENOMEM;
                goto error;
        }
        DEBUG("priv->device_attr.max_qp_wr is %d",
@@ -657,9 +707,10 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
                attr.wq.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
        }
 #endif
-       tmpl->wq = ibv_create_wq(priv->ctx, &attr.wq);
+       tmpl->wq = mlx5_glue->create_wq(priv->ctx, &attr.wq);
        if (tmpl->wq == NULL) {
                ERROR("%p: WQ creation failure", (void *)rxq_ctrl);
+               rte_errno = ENOMEM;
                goto error;
        }
        /*
@@ -674,6 +725,7 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
                      ((1 << rxq_data->elts_n) >> rxq_data->sges_n),
                      (1 << rxq_data->sges_n),
                      attr.wq.max_wr, attr.wq.max_sge);
+               rte_errno = EINVAL;
                goto error;
        }
        /* Change queue state to ready. */
@@ -681,22 +733,26 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
                .attr_mask = IBV_WQ_ATTR_STATE,
                .wq_state = IBV_WQS_RDY,
        };
-       ret = ibv_modify_wq(tmpl->wq, &mod);
+       ret = mlx5_glue->modify_wq(tmpl->wq, &mod);
        if (ret) {
                ERROR("%p: WQ state to IBV_WQS_RDY failed",
                      (void *)rxq_ctrl);
+               rte_errno = ret;
                goto error;
        }
        obj.cq.in = tmpl->cq;
        obj.cq.out = &cq_info;
        obj.rwq.in = tmpl->wq;
        obj.rwq.out = &rwq;
-       ret = mlx5dv_init_obj(&obj, MLX5DV_OBJ_CQ | MLX5DV_OBJ_RWQ);
-       if (ret != 0)
+       ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ | MLX5DV_OBJ_RWQ);
+       if (ret) {
+               rte_errno = ret;
                goto error;
+       }
        if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) {
                ERROR("Wrong MLX5_CQE_SIZE environment variable value: "
                      "it should be set to %u", RTE_CACHE_LINE_SIZE);
+               rte_errno = EINVAL;
                goto error;
        }
        /* Fill the rings. */
@@ -734,36 +790,41 @@ mlx5_priv_rxq_ibv_new(struct priv *priv, uint16_t idx)
        *rxq_data->rq_db = rte_cpu_to_be_32(rxq_data->rq_ci);
        DEBUG("%p: rxq updated with %p", (void *)rxq_ctrl, (void *)&tmpl);
        rte_atomic32_inc(&tmpl->refcnt);
-       DEBUG("%p: Verbs Rx queue %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Verbs Rx queue %p: refcnt %d", (void *)dev,
              (void *)tmpl, rte_atomic32_read(&tmpl->refcnt));
        LIST_INSERT_HEAD(&priv->rxqsibv, tmpl, next);
+       priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE;
        return tmpl;
 error:
+       ret = rte_errno; /* Save rte_errno before cleanup. */
        if (tmpl->wq)
-               claim_zero(ibv_destroy_wq(tmpl->wq));
+               claim_zero(mlx5_glue->destroy_wq(tmpl->wq));
        if (tmpl->cq)
-               claim_zero(ibv_destroy_cq(tmpl->cq));
+               claim_zero(mlx5_glue->destroy_cq(tmpl->cq));
        if (tmpl->channel)
-               claim_zero(ibv_destroy_comp_channel(tmpl->channel));
+               claim_zero(mlx5_glue->destroy_comp_channel(tmpl->channel));
        if (tmpl->mr)
-               priv_mr_release(priv, tmpl->mr);
+               mlx5_mr_release(tmpl->mr);
+       priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE;
+       rte_errno = ret; /* Restore rte_errno. */
        return NULL;
 }
 
 /**
  * Get an Rx queue Verbs object.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   Queue index in DPDK Rx queue array
  *
  * @return
  *   The Verbs object if it exists.
  */
-struct mlx5_rxq_ibv*
-mlx5_priv_rxq_ibv_get(struct priv *priv, uint16_t idx)
+struct mlx5_rxq_ibv *
+mlx5_rxq_ibv_get(struct rte_eth_dev *dev, uint16_t idx)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
        struct mlx5_rxq_ctrl *rxq_ctrl;
 
@@ -773,9 +834,9 @@ mlx5_priv_rxq_ibv_get(struct priv *priv, uint16_t idx)
                return NULL;
        rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
        if (rxq_ctrl->ibv) {
-               priv_mr_get(priv, rxq_data->mp);
+               mlx5_mr_get(dev, rxq_data->mp);
                rte_atomic32_inc(&rxq_ctrl->ibv->refcnt);
-               DEBUG("%p: Verbs Rx queue %p: refcnt %d", (void *)priv,
+               DEBUG("%p: Verbs Rx queue %p: refcnt %d", (void *)dev,
                      (void *)rxq_ctrl->ibv,
                      rte_atomic32_read(&rxq_ctrl->ibv->refcnt));
        }
@@ -785,16 +846,14 @@ mlx5_priv_rxq_ibv_get(struct priv *priv, uint16_t idx)
 /**
  * Release an Rx verbs queue object.
  *
- * @param priv
- *   Pointer to private structure.
  * @param rxq_ibv
  *   Verbs Rx queue object.
  *
  * @return
- *   0 on success, errno value on failure.
+ *   1 while a reference on it exists, 0 when freed.
  */
 int
-mlx5_priv_rxq_ibv_release(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
+mlx5_rxq_ibv_release(struct mlx5_rxq_ibv *rxq_ibv)
 {
        int ret;
 
@@ -802,40 +861,43 @@ mlx5_priv_rxq_ibv_release(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
        assert(rxq_ibv->wq);
        assert(rxq_ibv->cq);
        assert(rxq_ibv->mr);
-       ret = priv_mr_release(priv, rxq_ibv->mr);
+       ret = mlx5_mr_release(rxq_ibv->mr);
        if (!ret)
                rxq_ibv->mr = NULL;
-       DEBUG("%p: Verbs Rx queue %p: refcnt %d", (void *)priv,
+       DEBUG("Verbs Rx queue %p: refcnt %d",
              (void *)rxq_ibv, rte_atomic32_read(&rxq_ibv->refcnt));
        if (rte_atomic32_dec_and_test(&rxq_ibv->refcnt)) {
                rxq_free_elts(rxq_ibv->rxq_ctrl);
-               claim_zero(ibv_destroy_wq(rxq_ibv->wq));
-               claim_zero(ibv_destroy_cq(rxq_ibv->cq));
+               claim_zero(mlx5_glue->destroy_wq(rxq_ibv->wq));
+               claim_zero(mlx5_glue->destroy_cq(rxq_ibv->cq));
                if (rxq_ibv->channel)
-                       claim_zero(ibv_destroy_comp_channel(rxq_ibv->channel));
+                       claim_zero(mlx5_glue->destroy_comp_channel
+                                  (rxq_ibv->channel));
                LIST_REMOVE(rxq_ibv, next);
                rte_free(rxq_ibv);
                return 0;
        }
-       return EBUSY;
+       return 1;
 }
 
 /**
  * Verify the Verbs Rx queue list is empty
  *
- * @param priv
- *  Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
- * @return the number of object not released.
+ * @return
+ *   The number of object not released.
  */
 int
-mlx5_priv_rxq_ibv_verify(struct priv *priv)
+mlx5_rxq_ibv_verify(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        int ret = 0;
        struct mlx5_rxq_ibv *rxq_ibv;
 
        LIST_FOREACH(rxq_ibv, &priv->rxqsibv, next) {
-               DEBUG("%p: Verbs Rx queue %p still referenced", (void *)priv,
+               DEBUG("%p: Verbs Rx queue %p still referenced", (void *)dev,
                      (void *)rxq_ibv);
                ++ret;
        }
@@ -845,15 +907,12 @@ mlx5_priv_rxq_ibv_verify(struct priv *priv)
 /**
  * Return true if a single reference exists on the object.
  *
- * @param priv
- *   Pointer to private structure.
  * @param rxq_ibv
  *   Verbs Rx queue object.
  */
 int
-mlx5_priv_rxq_ibv_releasable(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
+mlx5_rxq_ibv_releasable(struct mlx5_rxq_ibv *rxq_ibv)
 {
-       (void)priv;
        assert(rxq_ibv);
        return (rte_atomic32_read(&rxq_ibv->refcnt) == 1);
 }
@@ -861,8 +920,8 @@ mlx5_priv_rxq_ibv_releasable(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
 /**
  * Create a DPDK Rx queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   TX queue index.
  * @param desc
@@ -871,13 +930,14 @@ mlx5_priv_rxq_ibv_releasable(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
  *   NUMA socket on which memory must be allocated.
  *
  * @return
- *   A DPDK queue object on success.
+ *   A DPDK queue object on success, NULL otherwise and rte_errno is set.
  */
-struct mlx5_rxq_ctrl*
-mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
-                 unsigned int socket, struct rte_mempool *mp)
+struct mlx5_rxq_ctrl *
+mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
+            unsigned int socket, const struct rte_eth_rxconf *conf,
+            struct rte_mempool *mp)
 {
-       struct rte_eth_dev *dev = priv->dev;
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_ctrl *tmpl;
        unsigned int mb_len = rte_pktmbuf_data_room_size(mp);
        struct mlx5_dev_config *config = &priv->config;
@@ -892,8 +952,10 @@ mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
                                 sizeof(*tmpl) +
                                 desc_n * sizeof(struct rte_mbuf *),
                                 0, socket);
-       if (!tmpl)
+       if (!tmpl) {
+               rte_errno = ENOMEM;
                return NULL;
+       }
        tmpl->socket = socket;
        if (priv->dev->data->dev_conf.intr_conf.rxq)
                tmpl->irq = 1;
@@ -902,7 +964,7 @@ mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
        if (dev->data->dev_conf.rxmode.max_rx_pkt_len <=
            (mb_len - RTE_PKTMBUF_HEADROOM)) {
                tmpl->rxq.sges_n = 0;
-       } else if (dev->data->dev_conf.rxmode.enable_scatter) {
+       } else if (conf->offloads & DEV_RX_OFFLOAD_SCATTER) {
                unsigned int size =
                        RTE_PKTMBUF_HEADROOM +
                        dev->data->dev_conf.rxmode.max_rx_pkt_len;
@@ -923,6 +985,7 @@ mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
                              (void *)dev,
                              1 << sges_n,
                              dev->data->dev_conf.rxmode.max_rx_pkt_len);
+                       rte_errno = EOVERFLOW;
                        goto error;
                }
        } else {
@@ -941,21 +1004,18 @@ mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
                      (void *)dev,
                      desc,
                      1 << tmpl->rxq.sges_n);
+               rte_errno = EINVAL;
                goto error;
        }
        /* Toggle RX checksum offload if hardware supports it. */
-       if (config->hw_csum)
-               tmpl->rxq.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
-       if (config->hw_csum_l2tun)
-               tmpl->rxq.csum_l2tun =
-                       !!dev->data->dev_conf.rxmode.hw_ip_checksum;
-       tmpl->rxq.hw_timestamp =
-                       !!dev->data->dev_conf.rxmode.hw_timestamp;
+       tmpl->rxq.csum = !!(conf->offloads & DEV_RX_OFFLOAD_CHECKSUM);
+       tmpl->rxq.csum_l2tun = (!!(conf->offloads & DEV_RX_OFFLOAD_CHECKSUM) &&
+                               priv->config.tunnel_en);
+       tmpl->rxq.hw_timestamp = !!(conf->offloads & DEV_RX_OFFLOAD_TIMESTAMP);
        /* Configure VLAN stripping. */
-       tmpl->rxq.vlan_strip = (config->hw_vlan_strip &&
-                              !!dev->data->dev_conf.rxmode.hw_vlan_strip);
+       tmpl->rxq.vlan_strip = !!(conf->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
        /* By default, FCS (CRC) is stripped by hardware. */
-       if (dev->data->dev_conf.rxmode.hw_strip_crc) {
+       if (conf->offloads & DEV_RX_OFFLOAD_CRC_STRIP) {
                tmpl->rxq.crc_present = 0;
        } else if (config->hw_fcs_strip) {
                tmpl->rxq.crc_present = 1;
@@ -981,7 +1041,7 @@ mlx5_priv_rxq_new(struct priv *priv, uint16_t idx, uint16_t desc,
        tmpl->rxq.elts =
                (struct rte_mbuf *(*)[1 << tmpl->rxq.elts_n])(tmpl + 1);
        rte_atomic32_inc(&tmpl->refcnt);
-       DEBUG("%p: Rx queue %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Rx queue %p: refcnt %d", (void *)dev,
              (void *)tmpl, rte_atomic32_read(&tmpl->refcnt));
        LIST_INSERT_HEAD(&priv->rxqsctrl, tmpl, next);
        return tmpl;
@@ -993,27 +1053,27 @@ error:
 /**
  * Get a Rx queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   TX queue index.
  *
  * @return
- *   A pointer to the queue if it exists.
+ *   A pointer to the queue if it exists, NULL otherwise.
  */
-struct mlx5_rxq_ctrl*
-mlx5_priv_rxq_get(struct priv *priv, uint16_t idx)
+struct mlx5_rxq_ctrl *
+mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_ctrl *rxq_ctrl = NULL;
 
        if ((*priv->rxqs)[idx]) {
                rxq_ctrl = container_of((*priv->rxqs)[idx],
                                        struct mlx5_rxq_ctrl,
                                        rxq);
-
-               mlx5_priv_rxq_ibv_get(priv, idx);
+               mlx5_rxq_ibv_get(dev, idx);
                rte_atomic32_inc(&rxq_ctrl->refcnt);
-               DEBUG("%p: Rx queue %p: refcnt %d", (void *)priv,
+               DEBUG("%p: Rx queue %p: refcnt %d", (void *)dev,
                      (void *)rxq_ctrl, rte_atomic32_read(&rxq_ctrl->refcnt));
        }
        return rxq_ctrl;
@@ -1022,31 +1082,27 @@ mlx5_priv_rxq_get(struct priv *priv, uint16_t idx)
 /**
  * Release a Rx queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   TX queue index.
  *
  * @return
- *   0 on success, errno value on failure.
+ *   1 while a reference on it exists, 0 when freed.
  */
 int
-mlx5_priv_rxq_release(struct priv *priv, uint16_t idx)
+mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_ctrl *rxq_ctrl;
 
        if (!(*priv->rxqs)[idx])
                return 0;
        rxq_ctrl = container_of((*priv->rxqs)[idx], struct mlx5_rxq_ctrl, rxq);
        assert(rxq_ctrl->priv);
-       if (rxq_ctrl->ibv) {
-               int ret;
-
-               ret = mlx5_priv_rxq_ibv_release(rxq_ctrl->priv, rxq_ctrl->ibv);
-               if (!ret)
-                       rxq_ctrl->ibv = NULL;
-       }
-       DEBUG("%p: Rx queue %p: refcnt %d", (void *)priv,
+       if (rxq_ctrl->ibv && !mlx5_rxq_ibv_release(rxq_ctrl->ibv))
+               rxq_ctrl->ibv = NULL;
+       DEBUG("%p: Rx queue %p: refcnt %d", (void *)dev,
              (void *)rxq_ctrl, rte_atomic32_read(&rxq_ctrl->refcnt));
        if (rte_atomic32_dec_and_test(&rxq_ctrl->refcnt)) {
                LIST_REMOVE(rxq_ctrl, next);
@@ -1054,27 +1110,31 @@ mlx5_priv_rxq_release(struct priv *priv, uint16_t idx)
                (*priv->rxqs)[idx] = NULL;
                return 0;
        }
-       return EBUSY;
+       return 1;
 }
 
 /**
  * Verify if the queue can be released.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param idx
  *   TX queue index.
  *
  * @return
- *   1 if the queue can be released.
+ *   1 if the queue can be released, negative errno otherwise and rte_errno is
+ *   set.
  */
 int
-mlx5_priv_rxq_releasable(struct priv *priv, uint16_t idx)
+mlx5_rxq_releasable(struct rte_eth_dev *dev, uint16_t idx)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_ctrl *rxq_ctrl;
 
-       if (!(*priv->rxqs)[idx])
-               return -1;
+       if (!(*priv->rxqs)[idx]) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
        rxq_ctrl = container_of((*priv->rxqs)[idx], struct mlx5_rxq_ctrl, rxq);
        return (rte_atomic32_read(&rxq_ctrl->refcnt) == 1);
 }
@@ -1082,19 +1142,21 @@ mlx5_priv_rxq_releasable(struct priv *priv, uint16_t idx)
 /**
  * Verify the Rx Queue list is empty
  *
- * @param priv
- *  Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
- * @return the number of object not released.
+ * @return
+ *   The number of object not released.
  */
 int
-mlx5_priv_rxq_verify(struct priv *priv)
+mlx5_rxq_verify(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_rxq_ctrl *rxq_ctrl;
        int ret = 0;
 
        LIST_FOREACH(rxq_ctrl, &priv->rxqsctrl, next) {
-               DEBUG("%p: Rx Queue %p still referenced", (void *)priv,
+               DEBUG("%p: Rx Queue %p still referenced", (void *)dev,
                      (void *)rxq_ctrl);
                ++ret;
        }
@@ -1104,35 +1166,37 @@ mlx5_priv_rxq_verify(struct priv *priv)
 /**
  * Create an indirection table.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param queues
  *   Queues entering in the indirection table.
  * @param queues_n
  *   Number of queues in the array.
  *
  * @return
- *   A new indirection table.
+ *   The Verbs object initialised, NULL otherwise and rte_errno is set.
  */
-struct mlx5_ind_table_ibv*
-mlx5_priv_ind_table_ibv_new(struct priv *priv, uint16_t queues[],
-                           uint16_t queues_n)
+struct mlx5_ind_table_ibv *
+mlx5_ind_table_ibv_new(struct rte_eth_dev *dev, uint16_t queues[],
+                      uint16_t queues_n)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_ind_table_ibv *ind_tbl;
        const unsigned int wq_n = rte_is_power_of_2(queues_n) ?
                log2above(queues_n) :
-               log2above(priv->ind_table_max_size);
+               log2above(priv->config.ind_table_max_size);
        struct ibv_wq *wq[1 << wq_n];
        unsigned int i;
        unsigned int j;
 
        ind_tbl = rte_calloc(__func__, 1, sizeof(*ind_tbl) +
                             queues_n * sizeof(uint16_t), 0);
-       if (!ind_tbl)
+       if (!ind_tbl) {
+               rte_errno = ENOMEM;
                return NULL;
+       }
        for (i = 0; i != queues_n; ++i) {
-               struct mlx5_rxq_ctrl *rxq =
-                       mlx5_priv_rxq_get(priv, queues[i]);
+               struct mlx5_rxq_ctrl *rxq = mlx5_rxq_get(dev, queues[i]);
 
                if (!rxq)
                        goto error;
@@ -1143,31 +1207,33 @@ mlx5_priv_ind_table_ibv_new(struct priv *priv, uint16_t queues[],
        /* Finalise indirection table. */
        for (j = 0; i != (unsigned int)(1 << wq_n); ++i, ++j)
                wq[i] = wq[j];
-       ind_tbl->ind_table = ibv_create_rwq_ind_table(
-               priv->ctx,
-               &(struct ibv_rwq_ind_table_init_attr){
+       ind_tbl->ind_table = mlx5_glue->create_rwq_ind_table
+               (priv->ctx,
+                &(struct ibv_rwq_ind_table_init_attr){
                        .log_ind_tbl_size = wq_n,
                        .ind_tbl = wq,
                        .comp_mask = 0,
-               });
-       if (!ind_tbl->ind_table)
+                });
+       if (!ind_tbl->ind_table) {
+               rte_errno = errno;
                goto error;
+       }
        rte_atomic32_inc(&ind_tbl->refcnt);
        LIST_INSERT_HEAD(&priv->ind_tbls, ind_tbl, next);
-       DEBUG("%p: Indirection table %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Indirection table %p: refcnt %d", (void *)dev,
              (void *)ind_tbl, rte_atomic32_read(&ind_tbl->refcnt));
        return ind_tbl;
 error:
        rte_free(ind_tbl);
-       DEBUG("%p cannot create indirection table", (void *)priv);
+       DEBUG("%p cannot create indirection table", (void *)dev);
        return NULL;
 }
 
 /**
  * Get an indirection table.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param queues
  *   Queues entering in the indirection table.
  * @param queues_n
@@ -1176,10 +1242,11 @@ error:
  * @return
  *   An indirection table if found.
  */
-struct mlx5_ind_table_ibv*
-mlx5_priv_ind_table_ibv_get(struct priv *priv, uint16_t queues[],
-                           uint16_t queues_n)
+struct mlx5_ind_table_ibv *
+mlx5_ind_table_ibv_get(struct rte_eth_dev *dev, uint16_t queues[],
+                      uint16_t queues_n)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_ind_table_ibv *ind_tbl;
 
        LIST_FOREACH(ind_tbl, &priv->ind_tbls, next) {
@@ -1193,10 +1260,10 @@ mlx5_priv_ind_table_ibv_get(struct priv *priv, uint16_t queues[],
                unsigned int i;
 
                rte_atomic32_inc(&ind_tbl->refcnt);
-               DEBUG("%p: Indirection table %p: refcnt %d", (void *)priv,
+               DEBUG("%p: Indirection table %p: refcnt %d", (void *)dev,
                      (void *)ind_tbl, rte_atomic32_read(&ind_tbl->refcnt));
                for (i = 0; i != ind_tbl->queues_n; ++i)
-                       mlx5_priv_rxq_get(priv, ind_tbl->queues[i]);
+                       mlx5_rxq_get(dev, ind_tbl->queues[i]);
        }
        return ind_tbl;
 }
@@ -1204,51 +1271,54 @@ mlx5_priv_ind_table_ibv_get(struct priv *priv, uint16_t queues[],
 /**
  * Release an indirection table.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param ind_table
  *   Indirection table to release.
  *
  * @return
- *   0 on success, errno value on failure.
+ *   1 while a reference on it exists, 0 when freed.
  */
 int
-mlx5_priv_ind_table_ibv_release(struct priv *priv,
-                               struct mlx5_ind_table_ibv *ind_tbl)
+mlx5_ind_table_ibv_release(struct rte_eth_dev *dev,
+                          struct mlx5_ind_table_ibv *ind_tbl)
 {
        unsigned int i;
 
-       DEBUG("%p: Indirection table %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Indirection table %p: refcnt %d", (void *)dev,
              (void *)ind_tbl, rte_atomic32_read(&ind_tbl->refcnt));
        if (rte_atomic32_dec_and_test(&ind_tbl->refcnt))
-               claim_zero(ibv_destroy_rwq_ind_table(ind_tbl->ind_table));
+               claim_zero(mlx5_glue->destroy_rwq_ind_table
+                          (ind_tbl->ind_table));
        for (i = 0; i != ind_tbl->queues_n; ++i)
-               claim_nonzero(mlx5_priv_rxq_release(priv, ind_tbl->queues[i]));
+               claim_nonzero(mlx5_rxq_release(dev, ind_tbl->queues[i]));
        if (!rte_atomic32_read(&ind_tbl->refcnt)) {
                LIST_REMOVE(ind_tbl, next);
                rte_free(ind_tbl);
                return 0;
        }
-       return EBUSY;
+       return 1;
 }
 
 /**
  * Verify the Rx Queue list is empty
  *
- * @param priv
- *  Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
- * @return the number of object not released.
+ * @return
+ *   The number of object not released.
  */
 int
-mlx5_priv_ind_table_ibv_verify(struct priv *priv)
+mlx5_ind_table_ibv_verify(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_ind_table_ibv *ind_tbl;
        int ret = 0;
 
        LIST_FOREACH(ind_tbl, &priv->ind_tbls, next) {
                DEBUG("%p: Verbs indirection table %p still referenced",
-                     (void *)priv, (void *)ind_tbl);
+                     (void *)dev, (void *)ind_tbl);
                ++ret;
        }
        return ret;
@@ -1257,8 +1327,8 @@ mlx5_priv_ind_table_ibv_verify(struct priv *priv)
 /**
  * Create an Rx Hash queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param rss_key
  *   RSS key for the Rx hash queue.
  * @param rss_key_len
@@ -1272,25 +1342,29 @@ mlx5_priv_ind_table_ibv_verify(struct priv *priv)
  *   Number of queues.
  *
  * @return
- *   An hash Rx queue on success.
+ *   The Verbs object initialised, NULL otherwise and rte_errno is set.
  */
-struct mlx5_hrxq*
-mlx5_priv_hrxq_new(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
-                  uint64_t hash_fields, uint16_t queues[], uint16_t queues_n)
+struct mlx5_hrxq *
+mlx5_hrxq_new(struct rte_eth_dev *dev, uint8_t *rss_key, uint8_t rss_key_len,
+             uint64_t hash_fields, uint16_t queues[], uint16_t queues_n)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_hrxq *hrxq;
        struct mlx5_ind_table_ibv *ind_tbl;
        struct ibv_qp *qp;
+       int err;
 
        queues_n = hash_fields ? queues_n : 1;
-       ind_tbl = mlx5_priv_ind_table_ibv_get(priv, queues, queues_n);
-       if (!ind_tbl)
-               ind_tbl = mlx5_priv_ind_table_ibv_new(priv, queues, queues_n);
+       ind_tbl = mlx5_ind_table_ibv_get(dev, queues, queues_n);
        if (!ind_tbl)
+               ind_tbl = mlx5_ind_table_ibv_new(dev, queues, queues_n);
+       if (!ind_tbl) {
+               rte_errno = ENOMEM;
                return NULL;
-       qp = ibv_create_qp_ex(
-               priv->ctx,
-               &(struct ibv_qp_init_attr_ex){
+       }
+       qp = mlx5_glue->create_qp_ex
+               (priv->ctx,
+                &(struct ibv_qp_init_attr_ex){
                        .qp_type = IBV_QPT_RAW_PACKET,
                        .comp_mask =
                                IBV_QP_INIT_ATTR_PD |
@@ -1304,9 +1378,11 @@ mlx5_priv_hrxq_new(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
                        },
                        .rwq_ind_tbl = ind_tbl->ind_table,
                        .pd = priv->pd,
-               });
-       if (!qp)
+                });
+       if (!qp) {
+               rte_errno = errno;
                goto error;
+       }
        hrxq = rte_calloc(__func__, 1, sizeof(*hrxq) + rss_key_len, 0);
        if (!hrxq)
                goto error;
@@ -1317,21 +1393,23 @@ mlx5_priv_hrxq_new(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
        memcpy(hrxq->rss_key, rss_key, rss_key_len);
        rte_atomic32_inc(&hrxq->refcnt);
        LIST_INSERT_HEAD(&priv->hrxqs, hrxq, next);
-       DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)dev,
              (void *)hrxq, rte_atomic32_read(&hrxq->refcnt));
        return hrxq;
 error:
-       mlx5_priv_ind_table_ibv_release(priv, ind_tbl);
+       err = rte_errno; /* Save rte_errno before cleanup. */
+       mlx5_ind_table_ibv_release(dev, ind_tbl);
        if (qp)
-               claim_zero(ibv_destroy_qp(qp));
+               claim_zero(mlx5_glue->destroy_qp(qp));
+       rte_errno = err; /* Restore rte_errno. */
        return NULL;
 }
 
 /**
  * Get an Rx Hash queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param rss_conf
  *   RSS configuration for the Rx hash queue.
  * @param queues
@@ -1343,10 +1421,11 @@ error:
  * @return
  *   An hash Rx queue on success.
  */
-struct mlx5_hrxq*
-mlx5_priv_hrxq_get(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
-                  uint64_t hash_fields, uint16_t queues[], uint16_t queues_n)
+struct mlx5_hrxq *
+mlx5_hrxq_get(struct rte_eth_dev *dev, uint8_t *rss_key, uint8_t rss_key_len,
+             uint64_t hash_fields, uint16_t queues[], uint16_t queues_n)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_hrxq *hrxq;
 
        queues_n = hash_fields ? queues_n : 1;
@@ -1359,15 +1438,15 @@ mlx5_priv_hrxq_get(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
                        continue;
                if (hrxq->hash_fields != hash_fields)
                        continue;
-               ind_tbl = mlx5_priv_ind_table_ibv_get(priv, queues, queues_n);
+               ind_tbl = mlx5_ind_table_ibv_get(dev, queues, queues_n);
                if (!ind_tbl)
                        continue;
                if (ind_tbl != hrxq->ind_table) {
-                       mlx5_priv_ind_table_ibv_release(priv, ind_tbl);
+                       mlx5_ind_table_ibv_release(dev, ind_tbl);
                        continue;
                }
                rte_atomic32_inc(&hrxq->refcnt);
-               DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)priv,
+               DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)dev,
                      (void *)hrxq, rte_atomic32_read(&hrxq->refcnt));
                return hrxq;
        }
@@ -1377,47 +1456,49 @@ mlx5_priv_hrxq_get(struct priv *priv, uint8_t *rss_key, uint8_t rss_key_len,
 /**
  * Release the hash Rx queue.
  *
- * @param priv
- *   Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  * @param hrxq
  *   Pointer to Hash Rx queue to release.
  *
  * @return
- *   0 on success, errno value on failure.
+ *   1 while a reference on it exists, 0 when freed.
  */
 int
-mlx5_priv_hrxq_release(struct priv *priv, struct mlx5_hrxq *hrxq)
+mlx5_hrxq_release(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq)
 {
-       DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)priv,
+       DEBUG("%p: Hash Rx queue %p: refcnt %d", (void *)dev,
              (void *)hrxq, rte_atomic32_read(&hrxq->refcnt));
        if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
-               claim_zero(ibv_destroy_qp(hrxq->qp));
-               mlx5_priv_ind_table_ibv_release(priv, hrxq->ind_table);
+               claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
+               mlx5_ind_table_ibv_release(dev, hrxq->ind_table);
                LIST_REMOVE(hrxq, next);
                rte_free(hrxq);
                return 0;
        }
-       claim_nonzero(mlx5_priv_ind_table_ibv_release(priv, hrxq->ind_table));
-       return EBUSY;
+       claim_nonzero(mlx5_ind_table_ibv_release(dev, hrxq->ind_table));
+       return 1;
 }
 
 /**
  * Verify the Rx Queue list is empty
  *
- * @param priv
- *  Pointer to private structure.
+ * @param dev
+ *   Pointer to Ethernet device.
  *
- * @return the number of object not released.
+ * @return
+ *   The number of object not released.
  */
 int
-mlx5_priv_hrxq_ibv_verify(struct priv *priv)
+mlx5_hrxq_ibv_verify(struct rte_eth_dev *dev)
 {
+       struct priv *priv = dev->data->dev_private;
        struct mlx5_hrxq *hrxq;
        int ret = 0;
 
        LIST_FOREACH(hrxq, &priv->hrxqs, next) {
                DEBUG("%p: Verbs Hash Rx queue %p still referenced",
-                     (void *)priv, (void *)hrxq);
+                     (void *)dev, (void *)hrxq);
                ++ret;
        }
        return ret;