[dpdk-dev] [PATCH v3 2/2] net/iavf: support IPv4/L4 checksum RSS offload

[Alvin Zhang]

Add supports for RSS_IPV4_CHKSUM & RSS_L4_CHKSUM RSS offload types
in RSS flow.

Signed-off-by: Alvin Zhang <alvinx.zhang at intel.com>
---

v2: rebase to dpdk-next-net-intel
v3: add release note
---
 doc/guides/rel_notes/release_21_11.rst |  4 ++++
 drivers/net/iavf/iavf_hash.c           | 38 +++++++++++++++++++++++++++-------
 2 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index eeb1e3d..dcff939 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -73,6 +73,10 @@ New Features
   * Implement support for tunnel offload.
   * Updated HWRM API to version 1.10.2.44
 
+* **Updated Intel iavf driver.**
+
+  * Added IPv4 and L4(TCP/UDP/SCTP) checksum hash support in RSS flow.
+
 * **Updated Intel ice driver.**
 
   * Added 1PPS out support by a devargs.
diff --git a/drivers/net/iavf/iavf_hash.c b/drivers/net/iavf/iavf_hash.c
index 03dae5d..01b8c08 100644
--- a/drivers/net/iavf/iavf_hash.c
+++ b/drivers/net/iavf/iavf_hash.c
@@ -342,23 +342,30 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 
 /* IPv4 outer */
 #define IAVF_RSS_TYPE_OUTER_IPV4	(ETH_RSS_ETH | ETH_RSS_IPV4 | \
-					 ETH_RSS_FRAG_IPV4)
+					 ETH_RSS_FRAG_IPV4 | \
+					 ETH_RSS_IPV4_CHKSUM)
 #define IAVF_RSS_TYPE_OUTER_IPV4_UDP	(IAVF_RSS_TYPE_OUTER_IPV4 | \
-					 ETH_RSS_NONFRAG_IPV4_UDP)
+					 ETH_RSS_NONFRAG_IPV4_UDP | \
+					 ETH_RSS_L4_CHKSUM)
 #define IAVF_RSS_TYPE_OUTER_IPV4_TCP	(IAVF_RSS_TYPE_OUTER_IPV4 | \
-					 ETH_RSS_NONFRAG_IPV4_TCP)
+					 ETH_RSS_NONFRAG_IPV4_TCP | \
+					 ETH_RSS_L4_CHKSUM)
 #define IAVF_RSS_TYPE_OUTER_IPV4_SCTP	(IAVF_RSS_TYPE_OUTER_IPV4 | \
-					 ETH_RSS_NONFRAG_IPV4_SCTP)
+					 ETH_RSS_NONFRAG_IPV4_SCTP | \
+					 ETH_RSS_L4_CHKSUM)
 /* IPv6 outer */
 #define IAVF_RSS_TYPE_OUTER_IPV6	(ETH_RSS_ETH | ETH_RSS_IPV6)
 #define IAVF_RSS_TYPE_OUTER_IPV6_FRAG	(IAVF_RSS_TYPE_OUTER_IPV6 | \
 					 ETH_RSS_FRAG_IPV6)
 #define IAVF_RSS_TYPE_OUTER_IPV6_UDP	(IAVF_RSS_TYPE_OUTER_IPV6 | \
-					 ETH_RSS_NONFRAG_IPV6_UDP)
+					 ETH_RSS_NONFRAG_IPV6_UDP | \
+					 ETH_RSS_L4_CHKSUM)
 #define IAVF_RSS_TYPE_OUTER_IPV6_TCP	(IAVF_RSS_TYPE_OUTER_IPV6 | \
-					 ETH_RSS_NONFRAG_IPV6_TCP)
+					 ETH_RSS_NONFRAG_IPV6_TCP | \
+					 ETH_RSS_L4_CHKSUM)
 #define IAVF_RSS_TYPE_OUTER_IPV6_SCTP	(IAVF_RSS_TYPE_OUTER_IPV6 | \
-					 ETH_RSS_NONFRAG_IPV6_SCTP)
+					 ETH_RSS_NONFRAG_IPV6_SCTP | \
+					 ETH_RSS_L4_CHKSUM)
 /* VLAN IPV4 */
 #define IAVF_RSS_TYPE_VLAN_IPV4		(IAVF_RSS_TYPE_OUTER_IPV4 | \
 					 ETH_RSS_S_VLAN | ETH_RSS_C_VLAN)
@@ -800,6 +807,10 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 			} else {
 				hdr->field_selector = 0;
 			}
+
+			if (rss_type & ETH_RSS_IPV4_CHKSUM)
+				REFINE_PROTO_FLD(ADD, IPV4_CHKSUM);
+
 			break;
 		case VIRTCHNL_PROTO_HDR_IPV4_FRAG:
 			if (rss_type &
@@ -812,6 +823,10 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 			} else {
 				hdr->field_selector = 0;
 			}
+
+			if (rss_type & ETH_RSS_IPV4_CHKSUM)
+				REFINE_PROTO_FLD(ADD, IPV4_CHKSUM);
+
 			break;
 		case VIRTCHNL_PROTO_HDR_IPV6:
 			if (rss_type &
@@ -863,6 +878,9 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 			} else {
 				hdr->field_selector = 0;
 			}
+
+			if (rss_type & ETH_RSS_L4_CHKSUM)
+				REFINE_PROTO_FLD(ADD, UDP_CHKSUM);
 			break;
 		case VIRTCHNL_PROTO_HDR_TCP:
 			if (rss_type &
@@ -879,6 +897,9 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 			} else {
 				hdr->field_selector = 0;
 			}
+
+			if (rss_type & ETH_RSS_L4_CHKSUM)
+				REFINE_PROTO_FLD(ADD, TCP_CHKSUM);
 			break;
 		case VIRTCHNL_PROTO_HDR_SCTP:
 			if (rss_type &
@@ -895,6 +916,9 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 			} else {
 				hdr->field_selector = 0;
 			}
+
+			if (rss_type & ETH_RSS_L4_CHKSUM)
+				REFINE_PROTO_FLD(ADD, SCTP_CHKSUM);
 			break;
 		case VIRTCHNL_PROTO_HDR_S_VLAN:
 			if (!(rss_type & ETH_RSS_S_VLAN))
-- 
1.8.3.1