From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sun, 28 Jun 2009 18:03:30 +0000 (+0000)
Subject: tcp: Stop non-TSO packets morphing into TSO
X-Git-Tag: v2.6.31-rc2~26^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e5b9dda99cc86bdbd822935fcc37c5808e271b3;p=pandora-kernel.git

tcp: Stop non-TSO packets morphing into TSO

If a socket starts out on a non-TSO route, and then switches to
a TSO route, then the tail on the tx queue can morph into a TSO
packet, causing mischief because the rest of the stack does not
expect a partially linear TSO packet.

This patch fixes this by ensuring that skb->ip_summed is set to
CHECKSUM_PARTIAL before declaring a packet as TSO.

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