From f31d7a0171dade2db6f26d331c762c0324e24523 Mon Sep 17 00:00:00 2001 From: Dekel Peled Date: Thu, 16 Jan 2020 20:36:23 +0200 Subject: [PATCH] net/mlx5: support GTP This patch adds to MLX5 PMD support of matching on GTP item, fields msg_type and teid, according to RFC [1]. GTP item validation and translation functions are added and called. GTP tunnel type is added to supported tunnels. [1] http://mails.dpdk.org/archives/dev/2019-December/152799.html Signed-off-by: Dekel Peled Acked-by: Ori Kam --- doc/guides/nics/mlx5.rst | 10 +++ doc/guides/rel_notes/release_20_02.rst | 1 + drivers/net/mlx5/mlx5.h | 1 + drivers/net/mlx5/mlx5_devx_cmds.c | 3 + drivers/net/mlx5/mlx5_flow.c | 4 + drivers/net/mlx5/mlx5_flow.h | 5 +- drivers/net/mlx5/mlx5_flow_dv.c | 114 +++++++++++++++++++++++++ drivers/net/mlx5/mlx5_prm.h | 10 ++- drivers/net/mlx5/mlx5_rxtx.h | 2 +- 9 files changed, 146 insertions(+), 4 deletions(-) diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index b513cfc929..66997f1ae7 100644 --- a/doc/guides/nics/mlx5.rst +++ b/doc/guides/nics/mlx5.rst @@ -90,6 +90,7 @@ Features - Statistics query including Basic, Extended and per queue. - Rx HW timestamp. - Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP, Geneve. +- Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP, Geneve, GTP. - Tunnel HW offloads: packet type, inner/outer RSS, IP and UDP checksum verification. - NIC HW offloads: encapsulation (vxlan, gre, mplsoudp, mplsogre), NAT, routing, TTL increment/decrement, count, drop, mark. For details please see :ref:`mlx5_offloads_support`. @@ -159,6 +160,11 @@ Limitations - VF: flow rules created on VF devices can only match traffic targeted at the configured MAC addresses (see ``rte_eth_dev_mac_addr_add()``). +- Match on GTP tunnel header item supports the following fields only: + + - msg_type + - teid + .. note:: MAC addresses not already present in the bridge table of the associated @@ -788,6 +794,10 @@ Below are some firmware configurations listed. FLEX_PARSER_PROFILE_ENABLE=0 +- enable GTP flow matching:: + + FLEX_PARSER_PROFILE_ENABLE=3 + Prerequisites ------------- diff --git a/doc/guides/rel_notes/release_20_02.rst b/doc/guides/rel_notes/release_20_02.rst index 2748264616..50e2c14841 100644 --- a/doc/guides/rel_notes/release_20_02.rst +++ b/doc/guides/rel_notes/release_20_02.rst @@ -111,6 +111,7 @@ New Features Updated Mellanox mlx5 driver with new features and improvements, including: * Added support for RSS using L3/L4 source/destination only. + * Added support for matching on GTP tunnel header item. * **Updated testpmd application.** diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index ceb6de821e..01542e7e96 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -195,6 +195,7 @@ struct mlx5_hca_attr { uint32_t vport_inline_mode:3; uint32_t tunnel_stateless_geneve_rx:1; uint32_t geneve_max_opt_len:1; /* 0x0: 14DW, 0x1: 63DW */ + uint32_t tunnel_stateless_gtp:1; uint32_t lro_cap:1; uint32_t tunnel_lro_gre:1; uint32_t tunnel_lro_vxlan:1; diff --git a/drivers/net/mlx5/mlx5_devx_cmds.c b/drivers/net/mlx5/mlx5_devx_cmds.c index d6bf15689d..9985d303a2 100644 --- a/drivers/net/mlx5/mlx5_devx_cmds.c +++ b/drivers/net/mlx5/mlx5_devx_cmds.c @@ -415,6 +415,9 @@ mlx5_devx_cmd_query_hca_attr(struct ibv_context *ctx, hcattr, max_geneve_opt_len); attr->wqe_inline_mode = MLX5_GET(per_protocol_networking_offload_caps, hcattr, wqe_inline_mode); + attr->tunnel_stateless_gtp = MLX5_GET + (per_protocol_networking_offload_caps, + hcattr, tunnel_stateless_gtp); if (attr->wqe_inline_mode != MLX5_CAP_INLINE_MODE_VPORT_CONTEXT) return 0; if (attr->eth_virt) { diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c index 0126cd8f92..bb1f1f16a1 100644 --- a/drivers/net/mlx5/mlx5_flow.c +++ b/drivers/net/mlx5/mlx5_flow.c @@ -319,6 +319,10 @@ static struct mlx5_flow_tunnel_info tunnels_info[] = { .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP, .ptype = RTE_PTYPE_TUNNEL_IP, }, + { + .tunnel = MLX5_FLOW_LAYER_GTP, + .ptype = RTE_PTYPE_TUNNEL_GTPU, + }, }; /** diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h index e42c98a3b9..a1c7b67488 100644 --- a/drivers/net/mlx5/mlx5_flow.h +++ b/drivers/net/mlx5/mlx5_flow.h @@ -122,6 +122,9 @@ enum mlx5_feature_name { /* Queue items. */ #define MLX5_FLOW_ITEM_TX_QUEUE (1u << 27) +/* Pattern tunnel Layer bits (continued). */ +#define MLX5_FLOW_LAYER_GTP (1u << 28) + /* Outer Masks. */ #define MLX5_FLOW_LAYER_OUTER_L3 \ (MLX5_FLOW_LAYER_OUTER_L3_IPV4 | MLX5_FLOW_LAYER_OUTER_L3_IPV6) @@ -136,7 +139,7 @@ enum mlx5_feature_name { (MLX5_FLOW_LAYER_VXLAN | MLX5_FLOW_LAYER_VXLAN_GPE | \ MLX5_FLOW_LAYER_GRE | MLX5_FLOW_LAYER_NVGRE | MLX5_FLOW_LAYER_MPLS | \ MLX5_FLOW_LAYER_IPIP | MLX5_FLOW_LAYER_IPV6_ENCAP | \ - MLX5_FLOW_LAYER_GENEVE) + MLX5_FLOW_LAYER_GENEVE | MLX5_FLOW_LAYER_GTP) /* Inner Masks. */ #define MLX5_FLOW_LAYER_INNER_L3 \ diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c index c02517aaf3..26dbaaf329 100644 --- a/drivers/net/mlx5/mlx5_flow_dv.c +++ b/drivers/net/mlx5/mlx5_flow_dv.c @@ -27,6 +27,7 @@ #include #include #include +#include #include "mlx5.h" #include "mlx5_defs.h" @@ -1551,6 +1552,56 @@ flow_dv_validate_item_port_id(struct rte_eth_dev *dev, return 0; } +/** + * 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 *mask = item->mask; + const struct rte_flow_item_gtp nic_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; + return mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_gtp), + error); +} + /** * Validate the pop VLAN action. * @@ -4629,6 +4680,13 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr, 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; default: return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, @@ -6337,6 +6395,57 @@ flow_dv_translate_item_icmp(void *matcher, void *key, icmp_v->hdr.icmp_code & icmp_m->hdr.icmp_code); } +/** + * 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_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)); +} + static uint32_t matcher_zero[MLX5_ST_SZ_DW(fte_match_param)] = { 0 }; #define HEADER_IS_ZERO(match_criteria, headers) \ @@ -7515,6 +7624,11 @@ cnt_err: 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); + last_item = MLX5_FLOW_LAYER_GTP; + break; default: break; } diff --git a/drivers/net/mlx5/mlx5_prm.h b/drivers/net/mlx5/mlx5_prm.h index a805363757..6ad214b16f 100644 --- a/drivers/net/mlx5/mlx5_prm.h +++ b/drivers/net/mlx5/mlx5_prm.h @@ -682,7 +682,11 @@ struct mlx5_ifc_fte_match_set_misc3_bits { u8 icmp_code[0x8]; u8 icmpv6_type[0x8]; u8 icmpv6_code[0x8]; - u8 reserved_at_1a0[0xe0]; + u8 reserved_at_120[0x20]; + u8 gtpu_teid[0x20]; + u8 gtpu_msg_type[0x08]; + u8 gtpu_msg_flags[0x08]; + u8 reserved_at_170[0x90]; }; /* Flow matcher. */ @@ -1235,7 +1239,9 @@ struct mlx5_ifc_per_protocol_networking_offload_caps_bits { u8 swp[0x1]; u8 swp_csum[0x1]; u8 swp_lso[0x1]; - u8 reserved_at_23[0xd]; + u8 reserved_at_23[0x8]; + u8 tunnel_stateless_gtp[0x1]; + u8 reserved_at_25[0x4]; u8 max_vxlan_udp_ports[0x8]; u8 reserved_at_38[0x6]; u8 max_geneve_opt_len[0x1]; diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h index 24fa038dc4..3f659d293c 100644 --- a/drivers/net/mlx5/mlx5_rxtx.h +++ b/drivers/net/mlx5/mlx5_rxtx.h @@ -40,7 +40,7 @@ #include "mlx5_glue.h" /* Support tunnel matching. */ -#define MLX5_FLOW_TUNNEL 9 +#define MLX5_FLOW_TUNNEL 10 struct mlx5_rxq_stats { #ifdef MLX5_PMD_SOFT_COUNTERS -- 2.20.1