[PATCH 5.13 261/300] octeontx2-af: Set proper errorcode for IPv4 checksum errors

Greg Kroah-Hartman
2021-09-13T14:15:50Z

From: Sunil Goutham <sgoutham@marvell.com>

[ Upstream commit 1e4428b6dba9b683dc2ec0a56ed7879de3200cce ]

With current config, for packets with IPv4 checksum errors,
errorcode is being set to UNKNOWN. Hence added a separate
errorcodes for outer and inner IPv4 checksum and changed
NPC configuration accordingly.

Also turn on L2 multicast address check in NPC protocol check block.

Fixes: 6b3321bacc5a ("octeontx2-af: Enable packet length and csum validation")
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index 4427abbc3aad..d413078fc043 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -1619,14 +1619,15 @@ int rvu_npc_init(struct rvu *rvu)

/* Enable below for Rx pkts.
* - Outer IPv4 header checksum validation.
- * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2M].
+ * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2B].
+ * - Detect outer L2 multicast 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(32) | BIT_ULL(24) | BIT_ULL(6) |
- BIT_ULL(2) | BIT_ULL(1));
+ ((u64)NPC_EC_OIP4_CSUM << 32) | (NPC_EC_IIP4_CSUM << 24) |
+ BIT_ULL(7) | BIT_ULL(6) | BIT_ULL(2) | BIT_ULL(1));

rvu_npc_setup_interfaces(rvu, blkaddr);

--
2.30.2