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mlx5: fix get_ip_proto()

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[ 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>
This commit is contained in:
Cong Wang 2019-09-23 12:40:12 +00:00 committed by Greg Kroah-Hartman
parent 44da02576b
commit 8da68f79b3
1 changed files with 3 additions and 3 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
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@ -725,9 +725,9 @@ static u32 mlx5e_get_fcs(const struct sk_buff *skb)
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(struct net_device *netdev,
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;