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authorHerbert Xu <herbert@gondor.apana.org.au>2006-03-20 22:43:56 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:43:56 -0800
commitcbb042f9e1292434e3cacb90e67d8d381aeac5a9 (patch)
treecc42f42232e56b68111cfebdc175197d8607bdd7 /include
parentecba320f2e95c9a0c35011d1ecb1db4419980536 (diff)
[NET]: Replace skb_pull/skb_postpull_rcsum with skb_pull_rcsum
We're now starting to have quite a number of places that do skb_pull followed immediately by an skb_postpull_rcsum. We can merge these two operations into one function with skb_pull_rcsum. This makes sense since most pull operations on receive skb's need to update the checksum. I've decided to make this out-of-line since it is fairly big and the fast path where hardware checksums are enabled need to call csum_partial anyway. Since this is a brand new function we get to add an extra check on the len argument. As it is most callers of skb_pull ignore its return value which essentially means that there is no check on the len argument. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/skbuff.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 75c963103b9..613b9513f8b 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1159,12 +1159,14 @@ static inline int skb_linearize(struct sk_buff *skb, gfp_t gfp)
*/
static inline void skb_postpull_rcsum(struct sk_buff *skb,
- const void *start, int len)
+ const void *start, unsigned int len)
{
if (skb->ip_summed == CHECKSUM_HW)
skb->csum = csum_sub(skb->csum, csum_partial(start, len, 0));
}
+unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len);
+
/**
* pskb_trim_rcsum - trim received skb and update checksum
* @skb: buffer to trim