netdev - [PATCH v1 net-next 07/14] octeontx2-af: Enable inner IPv4 checksum and its error code

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Message-Id: <20181201091403.30166-8-jerinjacobk@gmail.com>
Date:   Sat,  1 Dec 2018 14:43:56 +0530
From:   Jerin Jacob <jerinjacobk@...il.com>
To:     netdev@...r.kernel.org, davem@...emloft.net
Cc:     sgoutham@...vell.com, lcherian@...vell.com, gakula@...vell.com,
        jerinj@...vell.com
Subject: [PATCH v1 net-next 07/14] octeontx2-af: Enable inner IPv4 checksum and its error code

From: Jerin Jacob <jerinj@...vell.com>

This patch enables the inner IPv4 checksum and
defines the error code for Rx inner and outer checksum errors.
Setting ERRCODE as 1 so that CQE descriptor can be embedded
valid checksum error code and the driver can interpret
checksum error as ERRLEV = LID + 1 and ERRCODE = 1.

Signed-off-by: Jerin Jacob <jerinj@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index ee2600d93d54..c203d3fddde9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -1008,13 +1008,20 @@ int rvu_npc_init(struct rvu *rvu)
 	rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OIP4,
 		    (NPC_LID_LC << 8) | (NPC_LT_LC_IP << 4) | 0x0F);
 
+	/* Config Inner IPV4 NPC layer info */
+	rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_IIP4,
+		    (NPC_LID_LF << 8) | (NPC_LT_LF_TU_IP << 4) | 0x0F);
+
 	/* Enable below for Rx pkts.
 	 * - Outer IPv4 header checksum validation.
 	 * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2M].
+	 * - Inner IPv4 header checksum validation.
+	 * - Set non zero checksum error code value
 	 */
 	rvu_write64(rvu, blkaddr, NPC_AF_PCK_CFG,
 		    rvu_read64(rvu, blkaddr, NPC_AF_PCK_CFG) |
-		    BIT_ULL(6) | BIT_ULL(2));
+		    BIT_ULL(32) | BIT_ULL(24) | BIT_ULL(6) |
+		    BIT_ULL(2) | BIT_ULL(1));
 
 	/* Set RX and TX side MCAM search key size.
 	 * LA..LD (ltype only) + Channel
-- 
2.19.2