David Miller <davem@xxxxxxxxxxxxx> wrote:
From: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Date: Fri, 08 Jan 2016 15:21:46 +0300
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@xxxxxxxxx>
If this works I definitely prefer this approach to the other patch
where the CB is copied back and forth.
I quite frankly don't care and just like you to apply one or the other;
use coin toss if needed :-}
I would prefer to use a on-stack state since there is no need to
use skb->cb (no queueing) but when I gave it a try it got out of hand
rather quick :-/