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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-05-26 20:50:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-27 12:25:55 +0200 |
| commit | 67147ba99aeb48f2863e03b68e090088a34c1b5d (patch) | |
| tree | 08bb9375134fe553c991f5f160957330de13f414 /net/core | |
| parent | gro: Inline skb_gro_header and cache frag0 virtual address (diff) | |
| download | linux-67147ba99aeb48f2863e03b68e090088a34c1b5d.tar.xz linux-67147ba99aeb48f2863e03b68e090088a34c1b5d.zip | |
gro: Localise offset/headlen in skb_gro_offset
This patch stores the offset/headlen in local variables as they're
used repeatedly in skb_gro_offset.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/skbuff.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c88426b51140..168e949df6a1 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -2666,13 +2666,15 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) struct sk_buff *nskb; unsigned int headroom; unsigned int len = skb_gro_len(skb); + unsigned int offset = skb_gro_offset(skb); + unsigned int headlen = skb_headlen(skb); if (p->len + len >= 65536) return -E2BIG; if (skb_shinfo(p)->frag_list) goto merge; - else if (skb_headlen(skb) <= skb_gro_offset(skb)) { + else if (headlen <= offset) { skb_frag_t *frag; int i; @@ -2680,10 +2682,8 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) MAX_SKB_FRAGS) return -E2BIG; - skb_shinfo(skb)->frags[0].page_offset += - skb_gro_offset(skb) - skb_headlen(skb); - skb_shinfo(skb)->frags[0].size -= - skb_gro_offset(skb) - skb_headlen(skb); + skb_shinfo(skb)->frags[0].page_offset += offset - headlen; + skb_shinfo(skb)->frags[0].size -= offset - headlen; frag = skb_shinfo(p)->frags + skb_shinfo(p)->nr_frags; for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) @@ -2736,16 +2736,13 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) p = nskb; merge: - if (skb_gro_offset(skb) > skb_headlen(skb)) { - skb_shinfo(skb)->frags[0].page_offset += - skb_gro_offset(skb) - skb_headlen(skb); - skb_shinfo(skb)->frags[0].size -= - skb_gro_offset(skb) - skb_headlen(skb); - skb_gro_reset_offset(skb); - skb_gro_pull(skb, skb_headlen(skb)); + if (offset > headlen) { + skb_shinfo(skb)->frags[0].page_offset += offset - headlen; + skb_shinfo(skb)->frags[0].size -= offset - headlen; + offset = headlen; } - __skb_pull(skb, skb_gro_offset(skb)); + __skb_pull(skb, offset); p->prev->next = skb; p->prev = skb; |