[dpdk-dev] [PATCH v3 1/2] net/iavf: fix default RSS field for IP fragment packets

[Wenjun Wu]

Previously, hash value is calculated by src IP address, dst IP address
and IP ID. However, default RSS field only needs src and dst IP address.

This patch removes IP ID from default RSS field for IP fragment packets to
improve default RSS configuration.

Fixes: 9e29a278bc0c ("net/iavf: support default RSS for IP fragment")

Signed-off-by: Wenjun Wu <wenjun1...@intel.com>
---
 drivers/net/iavf/iavf_hash.c | 26 ++------------------------
 1 file changed, 2 insertions(+), 24 deletions(-)

diff --git a/drivers/net/iavf/iavf_hash.c b/drivers/net/iavf/iavf_hash.c
index 2b03dad858..eba55ecea5 100644
--- a/drivers/net/iavf/iavf_hash.c
+++ b/drivers/net/iavf/iavf_hash.c
@@ -624,34 +624,12 @@ iavf_rss_hash_set(struct iavf_adapter *ad, uint64_t 
rss_hf, bool add)
        }
 
        if (rss_hf & ETH_RSS_FRAG_IPV4) {
-               struct virtchnl_proto_hdrs hdr = {
-                       .tunnel_level = TUNNEL_LEVEL_OUTER,
-                       .count = 3,
-                       .proto_hdr = {
-                               proto_hdr_eth,
-                               proto_hdr_ipv4,
-                               {
-                                       VIRTCHNL_PROTO_HDR_IPV4_FRAG,
-                                       
FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_FRAG_PKID),
-                                       {BUFF_NOUSED},
-                               },
-                       },
-               };
-               rss_cfg.proto_hdrs = hdr;
+               rss_cfg.proto_hdrs = outer_ipv4_tmplt;
                iavf_add_del_rss_cfg(ad, &rss_cfg, add);
        }
 
        if (rss_hf & ETH_RSS_FRAG_IPV6) {
-               struct virtchnl_proto_hdrs hdr = {
-                       .tunnel_level = TUNNEL_LEVEL_OUTER,
-                       .count = 3,
-                       .proto_hdr = {
-                               proto_hdr_eth,
-                               proto_hdr_ipv6,
-                               proto_hdr_ipv6_frag,
-                       },
-               };
-               rss_cfg.proto_hdrs = hdr;
+               rss_cfg.proto_hdrs = outer_ipv6_tmplt;
                iavf_add_del_rss_cfg(ad, &rss_cfg, add);
        }
 
-- 
2.25.1