gro: Avoid copying headers of unmerged packets

[safe/jmp/linux-2.6] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 743f554..d6770f2 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1253,10 +1253,10 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
        int proto;
        int id;
 
-       if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
+       iph = skb_gro_header(skb, sizeof(*iph));
+       if (unlikely(!iph))
                goto out;
 
-       iph = ip_hdr(skb);
        proto = iph->protocol & (MAX_INET_PROTOS - 1);
 
        rcu_read_lock();
@@ -1270,7 +1270,7 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
        if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
                goto out_unlock;
 
-       flush = ntohs(iph->tot_len) != skb->len ||
+       flush = ntohs(iph->tot_len) != skb_gro_len(skb) ||
                iph->frag_off != htons(IP_DF);
        id = ntohs(iph->id);
 
@@ -1298,8 +1298,8 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
        }
 
        NAPI_GRO_CB(skb)->flush |= flush;
-       __skb_pull(skb, sizeof(*iph));
-       skb_reset_transport_header(skb);
+       skb_gro_pull(skb, sizeof(*iph));
+       skb_set_transport_header(skb, skb_gro_offset(skb));
 
        pp = ops->gro_receive(head, skb);