From: Suman Ghosh <sumang@marvell.com>
Date: Wed, 3 May 2023 12:39:39 +0530
Subject: [PATCH] octeontx2-af: Update correct mask to filter IPv4 fragments
References: bsc#1012628
Patch-mainline: 6.3.3
Git-commit: 2075bf150ddf320df02c05e242774dc0f73be1a1

[ Upstream commit 2075bf150ddf320df02c05e242774dc0f73be1a1 ]

During the initial design, the IPv4 ip_flag mask was set to 0xff.
Which results to filter only fragmets with (fragment_offset == 0).
As part of the fix, updated the mask to 0x20 to filter all the
fragmented packets irrespective of the fragment_offset value.

Fixes: c672e3727989 ("octeontx2-pf: Add support to filter packet based on IP fragment")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index 044cc211..8392f63e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -544,7 +544,7 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
 		if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
 			if (ntohs(flow_spec->etype) == ETH_P_IP) {
 				flow_spec->ip_flag = IPV4_FLAG_MORE;
-				flow_mask->ip_flag = 0xff;
+				flow_mask->ip_flag = IPV4_FLAG_MORE;
 				req->features |= BIT_ULL(NPC_IPFRAG_IPV4);
 			} else if (ntohs(flow_spec->etype) == ETH_P_IPV6) {
 				flow_spec->next_header = IPPROTO_FRAGMENT;
-- 
2.35.3