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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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4
net/ipv4/udp.c
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@@ -848,7 +848,7 @@ try_again:
goto csum_copy_err;
}
if (skb->ip_summed == CHECKSUM_UNNECESSARY)
if (skb_csum_unnecessary(skb))
err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
msg->msg_iov, copied );
else {
@@ -1190,7 +1190,7 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,
proto, skb->csum))
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
if (skb->ip_summed != CHECKSUM_UNNECESSARY)
if (!skb_csum_unnecessary(skb))
skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
skb->len, proto, 0);
/* Probably, we should checksum udp header (it should be in cache