[dpdk-dev] [PATCH] net/mlx5: fix flow director matching rules

[Nelio Laranjeiro]

Flow director API does not provide a layer 2 configuration when the filter
is for layer 3 and 4 causing the translation to generic flow API to be
wrong, as not providing a mask for layer ends by using the default one.  In
this case, the Ethernet mask layer is full whereas it must be empty.

Fixes: 4c3e9bcdd52e ("net/mlx5: support flow director")

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Acked-by: Yongseok Koh <yskoh at mellanox.com>
---
 drivers/net/mlx5/mlx5_flow.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index f392f1f65..567c7f675 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -479,6 +479,7 @@ struct mlx5_fdir {
 	struct rte_flow_action actions[2];
 	struct rte_flow_item items[4];
 	struct rte_flow_item_eth l2;
+	struct rte_flow_item_eth l2_mask;
 	union {
 		struct rte_flow_item_ipv4 ipv4;
 		struct rte_flow_item_ipv6 ipv6;
@@ -2615,6 +2616,7 @@ priv_fdir_filter_convert(struct priv *priv,
 	attributes->items[0] = (struct rte_flow_item) {
 		.type = RTE_FLOW_ITEM_TYPE_ETH,
 		.spec = &attributes->l2,
+		.mask = &attributes->l2_mask,
 	};
 	switch (fdir_filter->action.behavior) {
 	case RTE_ETH_FDIR_ACCEPT:
@@ -2778,6 +2780,11 @@ priv_fdir_filter_add(struct priv *priv,
 {
 	struct mlx5_fdir attributes = {
 		.attr.group = 0,
+		.l2_mask = {
+			.dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+			.src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+			.type = 0,
+		},
 	};
 	struct mlx5_flow_parse parser = {
 		.layer = HASH_RXQ_ETH,
-- 
2.11.0