net/mlx5: support match on IPv6 fragment packets

This patch adds to MLX5 PMD the support of matching on IPv6
fragmented and non-fragmented packets, using the new field
has_frag_ext, 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>

diff --git a/doc/guides/rel_notes/release_20_11.rst b/doc/guides/rel_notes/release_20_11.rst
index 72bd8d0..b2e5fcf 100644 (file)
--- a/doc/guides/rel_notes/release_20_11.rst
+++ b/doc/guides/rel_notes/release_20_11.rst
@@ -173,7 +173,7 @@ New Features
 
   Updated Mellanox mlx5 driver with new features and improvements, including:
 
-  * Added support for matching on fragmented/non-fragmented IPv4 packets.
+  * Added support for matching on fragmented/non-fragmented IPv4/IPv6 packets.
 
 * **Updated Solarflare network PMD.**
 

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index ff97f78..b61a361 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -5417,6 +5417,7 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
                        .proto = 0xff,
                        .hop_limits = 0xff,
                },
+               .has_frag_ext = 1,
        };
        const struct rte_flow_item_ecpri nic_ecpri_mask = {
                .hdr = {
@@ -6734,6 +6735,10 @@ flow_dv_translate_item_ipv6(void *matcher, void *key,
                 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->has_frag_ext));
+       MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
+                !!(ipv6_v->has_frag_ext & ipv6_m->has_frag_ext));
 }
 
 /**