[PATCH v9 1/2] ethdev: support RSS based on RoCEv2 header

[kirankumark at marvell.com]

From: Kiran Kumar K <kirankumark at marvell.com>

On supporting hardware, RoCEv2 header can be used to
perform RSS in the ingress path.

Signed-off-by: Kiran Kumar K <kirankumark at marvell.com>
---
V9 Changes:
* Fix checkpatch warnings.
V8 Changes:
* Fixed doc
V7 Changes;
* Addressed review comments related to rss_type_table.
 app/test-pmd/config.c                  | 4 +++-
 doc/guides/rel_notes/release_25_07.rst | 5 +++++
 lib/ethdev/rte_ethdev.h                | 2 ++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index e89af21cec..26fd920a36 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -92,7 +92,8 @@ const struct rss_type_info rss_type_table[] = {
 	{ "all", RTE_ETH_RSS_ETH | RTE_ETH_RSS_VLAN | RTE_ETH_RSS_IP | RTE_ETH_RSS_TCP |
 		RTE_ETH_RSS_UDP | RTE_ETH_RSS_SCTP | RTE_ETH_RSS_L2_PAYLOAD |
 		RTE_ETH_RSS_L2TPV3 | RTE_ETH_RSS_ESP | RTE_ETH_RSS_AH | RTE_ETH_RSS_PFCP |
-		RTE_ETH_RSS_GTPU | RTE_ETH_RSS_ECPRI | RTE_ETH_RSS_MPLS | RTE_ETH_RSS_L2TPV2},
+		RTE_ETH_RSS_GTPU | RTE_ETH_RSS_ECPRI | RTE_ETH_RSS_MPLS | RTE_ETH_RSS_L2TPV2 |
+		RTE_ETH_RSS_IB_BTH},
 	{ "none", 0 },
 	{ "ip", RTE_ETH_RSS_IP },
 	{ "udp", RTE_ETH_RSS_UDP },
@@ -149,6 +150,7 @@ const struct rss_type_info rss_type_table[] = {
 	{ "l3-dst-only", RTE_ETH_RSS_L3_DST_ONLY },
 	{ "l3-src-only", RTE_ETH_RSS_L3_SRC_ONLY },
 	{ "ipv6-flow-label", RTE_ETH_RSS_IPV6_FLOW_LABEL },
+	{ "ib-bth", RTE_ETH_RSS_IB_BTH },
 	{ NULL, 0},
 };

diff --git a/doc/guides/rel_notes/release_25_07.rst b/doc/guides/rel_notes/release_25_07.rst
index 6b070801de..9a3677f972 100644
--- a/doc/guides/rel_notes/release_25_07.rst
+++ b/doc/guides/rel_notes/release_25_07.rst
@@ -55,6 +55,11 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================

+* **Added new RSS offload types for IB_BTH in RSS flow.**
+
+  Added ``RTE_ETH_RSS_IB_BTH`` macro so that the RoCE Infiniband base transport header
+  can be used as input set for RSS.
+
 * **Added burst mode query function to Intel drivers.**

   Added support for Rx and Tx burst mode query to the following drivers:
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index ea7f8c4a1a..8e0c89581e 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -602,6 +602,8 @@ struct rte_eth_rss_conf {

 #define RTE_ETH_RSS_L2TPV2             RTE_BIT64(36)
 #define RTE_ETH_RSS_IPV6_FLOW_LABEL    RTE_BIT64(37)
+/** RoCE InfiniBand Base Transport Header */
+#define RTE_ETH_RSS_IB_BTH RTE_BIT64(38)

 /*
  * We use the following macros to combine with above RTE_ETH_RSS_* for
--
2.48.1