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net: add gro_compute_pseudo functions

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Add inet_gro_compute_pseudo and ip6_gro_compute_pseudo. These are
the logical equivalents of inet_compute_pseudo and ip6_compute_pseudo
for GRO path. The IP header is taken from skb_gro_network_header.

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 13:34:04 -07:00
committed by David S. Miller
parent 573e8fca25
commit 1933a7852c
2 changed files with 16 additions and 0 deletions
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8
include/net/ip6_checksum.h
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@@ -48,6 +48,14 @@ static inline __wsum ip6_compute_pseudo(struct sk_buff *skb, int proto)
skb->len, proto, 0));
}
static inline __wsum ip6_gro_compute_pseudo(struct sk_buff *skb, int proto)
{
const struct ipv6hdr *iph = skb_gro_network_header(skb);
return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr,
skb_gro_len(skb), proto, 0));
}
static __inline__ __sum16 tcp_v6_check(int len,
const struct in6_addr *saddr,
const struct in6_addr *daddr,