net/mlx5: fix missing RSS expansion of IPv6 frag

IPV6_FRAG_EXT item is missed for RSS expansion which causes wrongly
expanded flows:
flow create 0 ingress pattern eth / ipv6 / udp dst is 250 / vxlan-gpe /
ipv6 / ipv6_frag_ext / end actions rss level 2 types ip end / end

Different from other items, IPV6_FRAG_EXT hasn't next field because HW
only support to do hash of UDP/TCP for non-fragment.

This MLX5_EXPANSION_IPV6_FRAG_EXT node in RSS expansion graph only helps
RSS expansion function to locate right node in graph from which start
to expand.

Fixes: 0e5a0d8f7556 ("net/mlx5: support match on IPv6 fragment extension")
Cc: stable@dpdk.org
Signed-off-by: Xiaoyu Min <jackmin@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index f534bf7..347e8c1 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -134,6 +134,7 @@ mlx5_flow_is_rss_expandable_item(const struct rte_flow_item *item)
        case RTE_FLOW_ITEM_TYPE_MPLS:
        case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
        case RTE_FLOW_ITEM_TYPE_GRE_KEY:
+       case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
                return true;
        default:
                break;
@@ -453,6 +454,7 @@ enum mlx5_expansion {
        MLX5_EXPANSION_IPV6,
        MLX5_EXPANSION_IPV6_UDP,
        MLX5_EXPANSION_IPV6_TCP,
+       MLX5_EXPANSION_IPV6_FRAG_EXT,
 };
 
 /** Supported expansion of items. */
@@ -607,7 +609,8 @@ static const struct mlx5_flow_expand_node mlx5_support_expansion[] = {
        },
        [MLX5_EXPANSION_IPV6] = {
                .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
-                                                 MLX5_EXPANSION_IPV6_TCP),
+                                                 MLX5_EXPANSION_IPV6_TCP,
+                                                 MLX5_EXPANSION_IPV6_FRAG_EXT),
                .type = RTE_FLOW_ITEM_TYPE_IPV6,
                .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
                        ETH_RSS_NONFRAG_IPV6_OTHER,
@@ -620,6 +623,9 @@ static const struct mlx5_flow_expand_node mlx5_support_expansion[] = {
                .type = RTE_FLOW_ITEM_TYPE_TCP,
                .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
        },
+       [MLX5_EXPANSION_IPV6_FRAG_EXT] = {
+               .type = RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT,
+       },
 };
 
 static struct rte_flow_action_handle *