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gro: Fix merging of paged packets 

The previous fix to paged packets broke the merging because it
reset the skb->len before we added it to the merged packet.  This
wasn't detected because it simply resulted in the truncation of
the packet while the missing bit is subsequently retransmitted.

The fix is to store skb->len before we clobber it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2009-01-17 19:48:13 +00:00 committed by David S. Miller
parent 9a8e47ffd9
commit 37fe4732b9
1 changed files with 5 additions and 4 deletions
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9
net/core/skbuff.c
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@ -2585,8 +2585,9 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
struct sk_buff *nskb;
unsigned int headroom;
unsigned int hlen = p->data - skb_mac_header(p);
unsigned int len = skb->len;
if (hlen + p->len + skb->len >= 65536)
if (hlen + p->len + len >= 65536)
return -E2BIG;
if (skb_shinfo(p)->frag_list)
@ -2648,9 +2649,9 @@ merge:
done:
NAPI_GRO_CB(p)->count++;
p->data_len += skb->len;
p->truesize += skb->len;
p->len += skb->len;
p->data_len += len;
p->truesize += len;
p->len += len;
NAPI_GRO_CB(skb)->same_flow = 1;
return 0;