netdev - [PATCH 1/1] drivers:net: fix return value check in mlx5e_ipsec_remove

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Date: Mon, 17 Jul 2023 22:46:40 +0800
From: Yuanjun Gong <ruc_gongyuanjun@....com>
To: Yuanjun Gong <ruc_gongyuanjun@....com>,
	Saeed Mahameed <saeedm@...dia.com>,
	Boris Pismenny <borisp@...dia.com>,
	Leon Romanovsky <leon@...nel.org>,
	netdev@...r.kernel.org
Subject: [PATCH 1/1] drivers:net: fix return value check in mlx5e_ipsec_remove_trailer

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

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@....com>
---
 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 eab5bc718771..8d995e304869 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);
-- 
2.17.1