[PATCH v3 1/2] ethdev: support RSS based on RoCEv2 header

[<kirankumark@marvell.com>]

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

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

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
---
V3 Changes:
* Adopted review changes related to formating

 app/test-pmd/config.c                  | 5 ++++-
 doc/guides/rel_notes/release_25_07.rst | 3 +++
 lib/ethdev/rte_ethdev.h                | 1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index e89af21cec..9023e430ca 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -92,7 +92,9 @@ 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 +151,7 @@ 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 093b85d206..1da999685f 100644
--- a/doc/guides/rel_notes/release_25_07.rst
+++ b/doc/guides/rel_notes/release_25_07.rst
@@ -54,6 +54,9 @@ New Features
      This section is a comment. Do not overwrite or remove it.
      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 IB BTH header can be used as input set for RSS.


 Removed Items
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index ea7f8c4a1a..5359625548 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -602,6 +602,7 @@ struct rte_eth_rss_conf {

 #define RTE_ETH_RSS_L2TPV2             RTE_BIT64(36)
 #define RTE_ETH_RSS_IPV6_FLOW_LABEL    RTE_BIT64(37)
+#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