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enic: Check inner ip proto for pseudo header csum 

To compute pseudo IP header csum, we need to check the inner header for
encap pkt, not outer IP header.

Also add pseudo csum for IPv6 inner pkt.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Govindarajulu Varadarajan 2018-03-01 11:07:19 -08:00 committed by David S. Miller
parent 129fbeecbc
commit 4a464a2b06
1 changed files with 14 additions and 1 deletions
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15
drivers/net/ethernet/cisco/enic/enic_main.c
View File

@ -635,12 +635,25 @@ static int enic_queue_wq_skb_csum_l4(struct enic *enic, struct vnic_wq *wq,
static void enic_preload_tcp_csum_encap(struct sk_buff *skb)
{
if (skb->protocol == cpu_to_be16(ETH_P_IP)) {
const struct ethhdr *eth = (struct ethhdr *)skb_inner_mac_header(skb);
switch (eth->h_proto) {
case ntohs(ETH_P_IP):
inner_ip_hdr(skb)->check = 0;
inner_tcp_hdr(skb)->check =
~csum_tcpudp_magic(inner_ip_hdr(skb)->saddr,
inner_ip_hdr(skb)->daddr, 0,
IPPROTO_TCP, 0);
break;
case ntohs(ETH_P_IPV6):
inner_tcp_hdr(skb)->check =
~csum_ipv6_magic(&inner_ipv6_hdr(skb)->saddr,
&inner_ipv6_hdr(skb)->daddr, 0,
IPPROTO_TCP, 0);
break;
default:
WARN_ONCE(1, "Non ipv4/ipv6 inner pkt for encap offload");
break;
}
}