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[NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY

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When a transmitted packet is looped back directly, CHECKSUM_PARTIAL
maps to the semantics of CHECKSUM_UNNECESSARY.  Therefore we should
treat it as such in the stack.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2007-04-09 11:59:39 -07:00 • committed by David S. Miller
parent 628592ccdb
commit 604763722c
13 changed files with 29 additions and 28 deletions
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2
net/core/netpoll.c
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@ -86,7 +86,7 @@ static __sum16 checksum_udp(struct sk_buff *skb, struct udphdr *uh,
{
__wsum psum;
if (uh->check == 0 || skb->ip_summed == CHECKSUM_UNNECESSARY)
if (uh->check == 0 || skb_csum_unnecessary(skb))
return 0;
psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);