[dpdk-dev] [PATCH v5 08/11] net/mlx5: support match on IPv6 fragment packets

[Dekel Peled <dekelp@nvidia.com>]

This patch adds to MLX5 PMD the support of matching on IPv6
fragmented and non-fragmented packets, using the new field
frag_ext_exist, added to rte_flow following RFC [1].

[1] https://mails.dpdk.org/archives/dev/2020-August/177257.html

Signed-off-by: Dekel Peled <dekelp@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 08e6f74..49bfa5f 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -5211,6 +5211,7 @@ struct field_modify_info modify_tcp[] = {
 			.proto = 0xff,
 			.hop_limits = 0xff,
 		},
+		.frag_ext_exist = 1,
 	};
 	const struct rte_flow_item_ecpri nic_ecpri_mask = {
 		.hdr = {
@@ -6519,6 +6520,10 @@ struct field_modify_info modify_tcp[] = {
 		 ipv6_m->hdr.hop_limits);
 	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ttl_hoplimit,
 		 ipv6_v->hdr.hop_limits & ipv6_m->hdr.hop_limits);
+	MLX5_SET(fte_match_set_lyr_2_4, headers_m, frag,
+		 !!(ipv6_m->frag_ext_exist));
+	MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
+		 !!(ipv6_v->frag_ext_exist & ipv6_m->frag_ext_exist));
 }
 
 /**
-- 
1.8.3.1