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Commit 4a464a2b authored by Govindarajulu Varadarajan's avatar Govindarajulu Varadarajan Committed by David S. Miller
Browse files

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: default avatarGovindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 129fbeec

drivers/net/ethernet/cisco/enic/enic_main.c

+14 −1
Original line number Diff line number Diff line
@@ -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;

	}

}