Currently PMD needs previous layer information in order to set
corresponding match field for MPLSoGRE or MPLSoUDP.
GRE_KEY item is missing as supported previous layer when translate
item MPLS, which causes flow[1] cannot match MPLS over GRE traffic.
According to RFC4023, MPLS over GRE tunnel with optional key
field needs to be supported too.
By adding missing GRE_KEY as supported previous layer fix problem.
[1]:
flow create 0 ingress pattern eth / ipv6 / gre k_bit is 1 / gre_key /
mpls label is 966138 / end actions queue index 1 / mark id 0xa / end
Fixes: a7a0365565a4 ("net/mlx5: match GRE key and present bits")
Cc: sta...@dpdk.org
Signed-off-by: Xiaoyu Min <jack...@nvidia.com>
---
drivers/net/mlx5/mlx5_flow_dv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index a04a3c2bb8..feeeaf6a1d 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -9027,6 +9027,8 @@ flow_dv_translate_item_mpls(void *matcher, void *key,
MLX5_UDP_PORT_MPLS);
break;
case MLX5_FLOW_LAYER_GRE:
+ /* Fall-through. */
+ case MLX5_FLOW_LAYER_GRE_KEY:
MLX5_SET(fte_match_set_misc, misc_m, gre_protocol, 0xffff);
MLX5_SET(fte_match_set_misc, misc_v, gre_protocol,
RTE_ETHER_TYPE_MPLS);
--
2.32.0
