From 09546d7b01927b5e31fdb51eea1f4ccc3abac5d2 Mon Sep 17 00:00:00 2001 From: Jiawei Wang Date: Fri, 7 May 2021 12:42:12 +0300 Subject: [PATCH] net/mlx5: fix RSS flow item expansion for GRE key The support of RSS expansion for the flows with IPv6 GRE item was added to mlx5 PMD. And the GRE KEY item support in expansion was missed and the flows with GRE and GRE KEY items were expanded in the wrong way causing the flow creation failure. This patch adds the RSS expansion support for GRE KEY and mlx5 PMD performs RSS expansion correctly. Fixes: 048f0d45e342 ("net/mlx5: support RSS expansion for IPv6 GRE") Cc: stable@dpdk.org Signed-off-by: Jiawei Wang Acked-by: Xiaoyu Min Acked-by: Viacheslav Ovsiienko --- drivers/net/mlx5/mlx5_flow.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c index 2811537226..32634c9af7 100644 --- a/drivers/net/mlx5/mlx5_flow.c +++ b/drivers/net/mlx5/mlx5_flow.c @@ -99,6 +99,8 @@ struct mlx5_flow_expand_node { * RSS types bit-field associated with this node * (see ETH_RSS_* definitions). */ + uint8_t optional; + /**< optional expand field. Default 0 to expand, 1 not go deeper. */ }; /** Object returned by mlx5_flow_expand_rss(). */ @@ -212,7 +214,7 @@ mlx5_flow_expand_rss_item_complete(const struct rte_flow_item *item) return ret; } -#define MLX5_RSS_EXP_ELT_N 8 +#define MLX5_RSS_EXP_ELT_N 16 /** * Expand RSS flows into several possible flows according to the RSS hash @@ -366,7 +368,7 @@ mlx5_flow_expand_rss(struct mlx5_flow_expand_rss *buf, size_t size, } } /* Go deeper. */ - if (node->next) { + if (!node->optional && node->next) { next_node = node->next; if (stack_pos++ == MLX5_RSS_EXP_ELT_N) { rte_errno = E2BIG; @@ -405,6 +407,7 @@ enum mlx5_expansion { MLX5_EXPANSION_VXLAN, MLX5_EXPANSION_VXLAN_GPE, MLX5_EXPANSION_GRE, + MLX5_EXPANSION_GRE_KEY, MLX5_EXPANSION_MPLS, MLX5_EXPANSION_ETH, MLX5_EXPANSION_ETH_VLAN, @@ -513,9 +516,16 @@ static const struct mlx5_flow_expand_node mlx5_support_expansion[] = { }, [MLX5_EXPANSION_GRE] = { .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, - MLX5_EXPANSION_IPV6), + MLX5_EXPANSION_IPV6, + MLX5_EXPANSION_GRE_KEY), .type = RTE_FLOW_ITEM_TYPE_GRE, }, + [MLX5_EXPANSION_GRE_KEY] = { + .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_GRE_KEY, + .optional = 1, + }, [MLX5_EXPANSION_MPLS] = { .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, MLX5_EXPANSION_IPV6), -- 2.20.1