tree 9053fd455c6a19176174674e898ee05c37724827
parent 5d19c619ab3f0551864684f09c2a2f22ee972bef
author Konstantin Khlebnikov <koct9i@gmail.com> 1452255706 +0300
committer David S. Miller <davem@davemloft.net> 1452886524 -0500

net: preserve IP control block during GSO segmentation

Skb_gso_segment() uses skb control block during segmentation.
This patch adds 32-bytes room for previous control block which
will be copied into all resulting segments.

This patch fixes kernel crash during fragmenting forwarded packets.
Fragmentation requires valid IP CB in skb for clearing ip options.
Also patch removes custom save/restore in ovs code, now it's redundant.

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Link: http://lkml.kernel.org/r/CALYGNiP-0MZ-FExV2HutTvE9U-QQtkKSoE--KN=JQE5STYsjAA@mail.gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>