From 6030e1d452e21d728f3f875a25f80bd714fd5273 Mon Sep 17 00:00:00 2001 From: Eli Britstein Date: Sun, 3 May 2020 10:47:55 +0000 Subject: [PATCH] net/mlx5: optimize IPv4/IPv6 matching The HW is optimized for IPv4/IPv6. For such cases avoid matching on ethertype, and use ip_version field instead. Signed-off-by: Eli Britstein Acked-by: Viacheslav Ovsiienko Acked-by: Matan Azrad --- drivers/net/mlx5/mlx5_flow_dv.c | 53 +++++++++++++++++++++++++-------- 1 file changed, 41 insertions(+), 12 deletions(-) diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c index f388ab9f92..aa5c353a3b 100644 --- a/drivers/net/mlx5/mlx5_flow_dv.c +++ b/drivers/net/mlx5/mlx5_flow_dv.c @@ -5635,6 +5635,8 @@ flow_dv_set_match_ip_version(uint32_t group, 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); } /** @@ -5651,7 +5653,8 @@ flow_dv_set_match_ip_version(uint32_t group, */ static void flow_dv_translate_item_eth(void *matcher, void *key, - const struct rte_flow_item *item, int inner) + 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; @@ -5706,11 +5709,22 @@ flow_dv_translate_item_eth(void *matcher, void *key, * 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. */ - 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; + 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; + } } /** @@ -5731,7 +5745,7 @@ static void flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow, void *matcher, void *key, const struct rte_flow_item *item, - int inner) + 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; @@ -5769,10 +5783,23 @@ flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow, 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); - 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)); + /* + * 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)); + } } /** @@ -8155,7 +8182,8 @@ __flow_dv_translate(struct rte_eth_dev *dev, break; case RTE_FLOW_ITEM_TYPE_ETH: flow_dv_translate_item_eth(match_mask, match_value, - items, tunnel); + items, tunnel, + dev_flow->dv.group); matcher.priority = MLX5_PRIORITY_MAP_L2; last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L2 : MLX5_FLOW_LAYER_OUTER_L2; @@ -8163,7 +8191,8 @@ __flow_dv_translate(struct rte_eth_dev *dev, case RTE_FLOW_ITEM_TYPE_VLAN: flow_dv_translate_item_vlan(dev_flow, match_mask, match_value, - items, tunnel); + 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) : -- 2.20.1