From: Willem de Bruijn <willemb@google.com>
Date: Tue, 12 Aug 2014 19:08:12 +0000 (-0400)
Subject: net-timestamp: fix missing tcp fragmentation cases
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~59^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=490cc7d03c21871eef5949ba77a18b0c7ef70ef5;p=pandora-kernel.git

net-timestamp: fix missing tcp fragmentation cases

Bytestream timestamps are correlated with a single byte in the skbuff,
recorded in skb_shinfo(skb)->tskey. When fragmenting skbuffs, ensure
that the tskey is set for the fragment in which the tskey falls
(seqno <= tskey < end_seqno).

The original implementation did not address fragmentation in
tcp_fragment or tso_fragment. Add code to inspect the sequence numbers
and move both tskey and the relevant tx_flags if necessary.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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