From b78462ebc6a4ef9074aa80abebcdd470dc5f0ce0 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Wed, 2 Jun 2010 12:24:37 +0000 Subject: skbuff: add check for non-linear to warn_if_lro and needs_linearize We can avoid an unecessary cache miss by checking if the skb is non-linear before accessing gso_size/gso_type in skb_warn_if_lro, the same can also be done to avoid a cache miss on nr_frags if data_len is 0. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- include/linux/skbuff.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/skbuff.h') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index bf243fc54959..645e78d395fd 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2129,7 +2129,8 @@ static inline bool skb_warn_if_lro(const struct sk_buff *skb) /* LRO sets gso_size but not gso_type, whereas if GSO is really * wanted then gso_type will be set. */ struct skb_shared_info *shinfo = skb_shinfo(skb); - if (shinfo->gso_size != 0 && unlikely(shinfo->gso_type == 0)) { + if (skb_is_nonlinear(skb) && shinfo->gso_size != 0 && + unlikely(shinfo->gso_type == 0)) { __skb_warn_lro_forwarding(skb); return true; } -- cgit v1.2.3