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gso: Fix support for linear packets 

When GRO/frag_list support was added to GSO, I made an error
which broke the support for segmenting linear GSO packets (GSO
packets are normally non-linear in the payload).

These days most of these packets are constructed by the tun
driver, which prefers to allocate linear memory if possible.
This is fixed in the latest kernel, but for 2.6.29 and earlier
it is still the norm.

Therefore this bug causes failures with GSO when used with tun
in 2.6.29.

Reported-by: James Huang <jamesclhuang@gmail.com>
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 2009-03-28 23:39:18 -07:00 committed by David S. Miller
parent 4b21cd4eed
commit 2f181855a0
1 changed files with 1 additions and 1 deletions
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2
net/core/skbuff.c
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@ -2579,7 +2579,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
skb_network_header_len(skb));
skb_copy_from_linear_data(skb, nskb->data, doffset);
if (pos >= offset + len)
if (fskb != skb_shinfo(skb)->frag_list)
continue;
if (!sg) {