net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer()

[ 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@163.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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 4614ddfa91ebc10f0255fc5c90c86f8018c10191..3803e7f23299e55105d88b5d2eac70adc7b5b96c 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
@@ -119,7 +119,9 @@ 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);