From 9aaa156cf9b7e9d9ed899f254283b91c4e3c36c8 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 26 May 2009 18:50:33 +0000 Subject: gro: Store shinfo in local variable in skb_gro_receive This patch stores the two shinfo pointers in local variables because they're used over and over again in skb_gro_receive. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/core/skbuff.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'net') diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 19afb18..8e815e6 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -2664,6 +2664,8 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) { struct sk_buff *p = *head; struct sk_buff *nskb; + struct skb_shared_info *skbinfo = skb_shinfo(skb); + struct skb_shared_info *pinfo = skb_shinfo(p); unsigned int headroom; unsigned int len = skb_gro_len(skb); unsigned int offset = skb_gro_offset(skb); @@ -2672,24 +2674,24 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) if (p->len + len >= 65536) return -E2BIG; - if (skb_shinfo(p)->frag_list) + if (pinfo->frag_list) goto merge; else if (headlen <= offset) { skb_frag_t *frag; skb_frag_t *frag2; - int i = skb_shinfo(skb)->nr_frags; - int nr_frags = skb_shinfo(p)->nr_frags + i; + int i = skbinfo->nr_frags; + int nr_frags = pinfo->nr_frags + i; offset -= headlen; if (nr_frags > MAX_SKB_FRAGS) return -E2BIG; - skb_shinfo(p)->nr_frags = nr_frags; - skb_shinfo(skb)->nr_frags = 0; + pinfo->nr_frags = nr_frags; + skbinfo->nr_frags = 0; - frag = skb_shinfo(p)->frags + nr_frags; - frag2 = skb_shinfo(skb)->frags + i; + frag = pinfo->frags + nr_frags; + frag2 = skbinfo->frags + i; do { *--frag = *--frag2; } while (--i); @@ -2726,7 +2728,7 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) *NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p); skb_shinfo(nskb)->frag_list = p; - skb_shinfo(nskb)->gso_size = skb_shinfo(p)->gso_size; + skb_shinfo(nskb)->gso_size = pinfo->gso_size; skb_header_release(p); nskb->prev = p; @@ -2742,8 +2744,8 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) merge: if (offset > headlen) { - skb_shinfo(skb)->frags[0].page_offset += offset - headlen; - skb_shinfo(skb)->frags[0].size -= offset - headlen; + skbinfo->frags[0].page_offset += offset - headlen; + skbinfo->frags[0].size -= offset - headlen; offset = headlen; } -- cgit v1.1