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tcp: Call skb_gro_checksum_validate

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In tcp[64]_gro_receive call skb_gro_checksum_validate to validate TCP
checksum in the gro context.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert
2014-08-22 13:34:30 -07:00
committed by David S. Miller
parent 758f75d1ff
commit 149d0774a7
2 changed files with 6 additions and 47 deletions
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27
net/ipv4/tcp_offload.c
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@@ -288,35 +288,14 @@ static int tcp_v4_gso_send_check(struct sk_buff *skb)
static struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
{
/* Use the IP hdr immediately proceeding for this transport */
const struct iphdr *iph = skb_gro_network_header(skb);
__wsum wsum;
/* Don't bother verifying checksum if we're going to flush anyway. */
if (NAPI_GRO_CB(skb)->flush)
goto skip_csum;
wsum = NAPI_GRO_CB(skb)->csum;
switch (skb->ip_summed) {
case CHECKSUM_NONE:
wsum = skb_checksum(skb, skb_gro_offset(skb), skb_gro_len(skb),
0);
/* fall through */
case CHECKSUM_COMPLETE:
if (!tcp_v4_check(skb_gro_len(skb), iph->saddr, iph->daddr,
wsum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
break;
}
if (!NAPI_GRO_CB(skb)->flush &&
skb_gro_checksum_validate(skb, IPPROTO_TCP,
inet_gro_compute_pseudo)) {
NAPI_GRO_CB(skb)->flush = 1;
return NULL;
}
skip_csum:
return tcp_gro_receive(head, skb);
}