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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-03-25 20:10:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:23:51 -0700 |
| commit | 759e5d006462d53fb708daa8284b4ad909415da1 (patch) | |
| tree | edcc4e9d975199b3fe5e2aadc3d1e06824755e75 /include/linux/skbuff.h | |
| parent | 1ab6eb62b02e0949a392fb19bf31ba59ae1022b1 (diff) | |
| download | op-kernel-dev-759e5d006462d53fb708daa8284b4ad909415da1.zip op-kernel-dev-759e5d006462d53fb708daa8284b4ad909415da1.tar.gz | |
[UDP]: Clean up UDP-Lite receive checksum
This patch eliminates some duplicate code for the verification of
receive checksums between UDP-Lite and UDP. It does this by
introducing __skb_checksum_complete_head which is identical to
__skb_checksum_complete_head apart from the fact that it takes
a length parameter rather than computing the first skb->len bytes.
As a result UDP-Lite will be able to use hardware checksum offload
for packets which do not use partial coverage checksums. It also
means that UDP-Lite loopback no longer does unnecessary checksum
verification.
If any NICs start support UDP-Lite this would also start working
automatically.
This patch removes the assumption that msg_flags has MSG_TRUNC clear
upon entry in recvmsg.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 30089ad..df229bd 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1372,6 +1372,7 @@ static inline void __net_timestamp(struct sk_buff *skb) } +extern __sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len); extern __sum16 __skb_checksum_complete(struct sk_buff *skb); /** |
