[PATCH net-next 2/2] octeontx2-af: Add RSS hashing support based on RoCEv2 header

[<nshettyj@marvell.com>]

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

Add NIX_FLOW_KEY_TYPE_ROCEV2 flow key type to support RSS hashing on
the RoCEv2 destination Queue Pair (QP) field, allowing RoCEv2 traffic
to be distributed across receive queues.

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Signed-off-by: Nitin Shetty J <nshettyj@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/mbox.h    | 1 +
 drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 3761ceb830c3..7e2b20b4ad0d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1269,6 +1269,7 @@ struct nix_rss_flowkey_cfg {
 #define NIX_FLOW_KEY_TYPE_IPV4_PROTO	BIT(21)
 #define NIX_FLOW_KEY_TYPE_AH		BIT(22)
 #define NIX_FLOW_KEY_TYPE_ESP		BIT(23)
+#define NIX_FLOW_KEY_TYPE_ROCEV2 BIT(24)
 #define NIX_FLOW_KEY_TYPE_L4_DST_ONLY BIT(28)
 #define NIX_FLOW_KEY_TYPE_L4_SRC_ONLY BIT(29)
 #define NIX_FLOW_KEY_TYPE_L3_DST_ONLY BIT(30)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 2cb79c5bf689..5c64c4fc3941 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -4300,6 +4300,13 @@ static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
 				keyoff_marker = false;
 			}
 			break;
+		case NIX_FLOW_KEY_TYPE_ROCEV2:
+			field->hdr_offset = 5;
+			field->bytesm1 = 2; /* Destination QP */
+			field->ltype_mask = 0xF;
+			field->lid = NPC_LID_LE;
+			field->ltype_match = NPC_LT_LE_ROCEV2;
+			break;
 		}
 		field->ena = 1;
 
-- 
2.48.1