From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 20 Sep 2005 01:18:38 +0000 (-0700)
Subject: [TCP]: Handle SACK'd packets properly in tcp_fragment().
X-Git-Tag: v2.6.14-rc2~2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e14c3caf605dfd29bd1aac3097e39db94afc9f07;p=pandora-kernel.git

[TCP]: Handle SACK'd packets properly in tcp_fragment().

The problem is that we're now calling tcp_fragment() in a context
where the packets might be marked as SACKED_ACKED or SACKED_RETRANS.
This was not possible before as you never retransmitted packets that
are so marked.

Because of this, we need to adjust sacked_out and retrans_out in
tcp_fragment().  This is exactly what the following patch does.

We also need to preserve the SACKED_ACKED/SACKED_RETRANS marking
if they exist.

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