diff options
author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-01-29 14:19:52 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-01-30 00:33:04 (GMT) |
commit | 80595d59ba9917227856e663da249c2276a8628d (patch) | |
tree | 4e1a175110c7ea8ee33a59a6d18cc72775332d3e /net/core/dev.c | |
parent | 81705ad1b2f926d2ef15ed95074a9c1fa9fb4dc4 (diff) | |
download | linux-fsl-qoriq-80595d59ba9917227856e663da249c2276a8628d.tar.xz |
gro: Open-code memcpy in napi_fraginfo_skb
This patch optimises napi_fraginfo_skb to only copy the bits
necessary. We also open-code the memcpy so that the alignment
information is always available to gcc.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
-rw-r--r-- | net/core/dev.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index df406dc..ec5be1c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2533,6 +2533,8 @@ struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi, struct net_device *dev = napi->dev; struct sk_buff *skb = napi->skb; struct ethhdr *eth; + skb_frag_t *frag; + int i; napi->skb = NULL; @@ -2545,8 +2547,14 @@ struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi, } BUG_ON(info->nr_frags > MAX_SKB_FRAGS); + frag = &info->frags[info->nr_frags - 1]; + + for (i = skb_shinfo(skb)->nr_frags; i < info->nr_frags; i++) { + skb_fill_page_desc(skb, i, frag->page, frag->page_offset, + frag->size); + frag++; + } skb_shinfo(skb)->nr_frags = info->nr_frags; - memcpy(skb_shinfo(skb)->frags, info->frags, sizeof(info->frags)); skb->data_len = info->len; skb->len += info->len; |