[PATCH 6.4 031/165] net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer()

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From: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>

[ Upstream commit e5bcb7564d3bd0c88613c76963c5349be9c511c5 ]

mlx5e_ipsec_remove_trailer() should return an error code if function
pskb_trim() returns an unexpected value.

Fixes: 2ac9cfe78223 ("net/mlx5e: IPSec, Add Innova IPSec offload TX data path")
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
index eab5bc718771f..8d995e3048692 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
@@ -58,7 +58,9 @@ static int mlx5e_ipsec_remove_trailer(struct sk_buff *skb, struct xfrm_state *x)
 
 	trailer_len = alen + plen + 2;
 
-	pskb_trim(skb, skb->len - trailer_len);
+	ret = pskb_trim(skb, skb->len - trailer_len);
+	if (unlikely(ret))
+		return ret;
 	if (skb->protocol == htons(ETH_P_IP)) {
 		ipv4hdr->tot_len = htons(ntohs(ipv4hdr->tot_len) - trailer_len);
 		ip_send_check(ipv4hdr);
-- 
2.40.1






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