tree 4882f2b114f7bb497e9844e21fe8bff4f8160def
parent 1619cca2921f6927f4240e03f413d4165c7002fc
author Herbert Xu <herbert@gondor.apana.org.au> 1126756235 -0700
committer David S. Miller <davem@davemloft.net> 1126756235 -0700

[TCP]: Compute in_sacked properly when we split up a TSO frame.

The problem is that the SACK fragmenting code may incorrectly call
tcp_fragment() with a length larger than the skb->len.  This happens
when the skb on the transmit queue completely falls to the LHS of the
SACK.

And add a BUG() check to tcp_fragment() so we can spot this kind of
error more quickly in the future.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>