netdev - [PATCH] net/mlx5e: fix ingress_ifindex check in mlx5e_flower_parse

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Date:   Fri,  9 Apr 2021 13:33:48 +0800
From:   wenxu@...oud.cn
To:     saeed@...nel.org
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org
Subject: [PATCH] net/mlx5e: fix ingress_ifindex check in mlx5e_flower_parse_meta

From: wenxu <wenxu@...oud.cn>

In the nft_offload there is the mate flow_dissector with no
ingress_ifindex but with ingress_iftype that only be used
in the software. So if the mask of ingress_ifindex in meta is
0, this meta check should be bypass.

Fixes: 6d65bc64e232 ("net/mlx5e: Add mlx5e_flower_parse_meta support")
Signed-off-by: wenxu <wenxu@...oud.cn>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index df2a0af..d675107d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1895,6 +1895,9 @@ static int mlx5e_flower_parse_meta(struct net_device *filter_dev,
 		return 0;
 
 	flow_rule_match_meta(rule, &match);
+	if (!match.mask->ingress_ifindex)
+		return 0;
+
 	if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
 		NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
 		return -EOPNOTSUPP;
-- 
1.8.3.1