[dpdk-dev] [PATCH V2 1/1] net/mlx5: fix IPv6 next proto validation

Eli Britstein elibr at nvidia.com
Tue Oct 20 15:19:13 CEST 2020


Previous patch added validation of the IPv6 next proto field, in order
to overcome a known limitation.
One of the values checked is IPPROTO_HOPOPTS, which is defined as 0.
If proto field is not specified for matching, or mask=0, as in the
following, a wrong validation takes place.
flow create 0 ingress pattern eth / ipv6 has_frag_ext is 0 / end actions
drop / end
Fix the validation only on proto asked by the user.

Fixes: 55e4c1d1ba73 ("net/mlx5: enforce limitation on IPv6 next proto")

Signed-off-by: Eli Britstein <elibr at nvidia.com>
Acked-by: Dekel Peled <dekelp at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index c56dac89f9..e0ca8e06b1 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1977,7 +1977,7 @@ mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
 					  RTE_FLOW_ERROR_TYPE_ITEM, item,
 					  "IPv6 cannot follow L2/VLAN layer "
 					  "which ether type is not IPv6");
-	if (mask && spec)
+	if (mask && mask->hdr.proto && spec)
 		next_proto = mask->hdr.proto & spec->hdr.proto;
 	if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
 		if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
-- 
2.28.0.546.g385c171



More information about the dev mailing list