From: Cong Wang xiyou.wangcong@gmail.com
[ Upstream commit ef6fcd455278c2be3032a346cc66d9dd9866b787 ]
IP header is not necessarily located right after struct ethhdr, there could be multiple 802.1Q headers in between, this is why we call __vlan_get_protocol().
Fixes: fe1dc069990c ("net/mlx5e: don't set CHECKSUM_COMPLETE on SCTP packets") Cc: Alaa Hleihel alaa@mellanox.com Cc: Or Gerlitz ogerlitz@mellanox.com Cc: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Cong Wang xiyou.wangcong@gmail.com Reviewed-by: Tariq Toukan tariqt@mellanox.com Acked-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -725,9 +725,9 @@ static u32 mlx5e_get_fcs(const struct sk return __get_unaligned_cpu32(fcs_bytes); }
-static u8 get_ip_proto(struct sk_buff *skb, __be16 proto) +static u8 get_ip_proto(struct sk_buff *skb, int network_depth, __be16 proto) { - void *ip_p = skb->data + sizeof(struct ethhdr); + void *ip_p = skb->data + network_depth;
return (proto == htons(ETH_P_IP)) ? ((struct iphdr *)ip_p)->protocol : ((struct ipv6hdr *)ip_p)->nexthdr; @@ -766,7 +766,7 @@ static inline void mlx5e_handle_csum(str goto csum_unnecessary;
if (likely(is_last_ethertype_ip(skb, &network_depth, &proto))) { - if (unlikely(get_ip_proto(skb, proto) == IPPROTO_SCTP)) + if (unlikely(get_ip_proto(skb, network_depth, proto) == IPPROTO_SCTP)) goto csum_unnecessary;
skb->ip_summed = CHECKSUM_COMPLETE;