netdev - Re: [PATCH V3 net 1/2] openvswitch: Properly set L4 keys on "later" IP fragments

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Date:   Wed, 28 Aug 2019 14:54:09 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gvrose8192@...il.com
Cc:     netdev@...r.kernel.org, pshelar@....org, joe@...d.net.nz
Subject: Re: [PATCH V3 net 1/2] openvswitch: Properly set L4 keys on
 "later" IP fragments

From: Greg Rose <gvrose8192@...il.com>
Date: Tue, 27 Aug 2019 07:58:09 -0700

> When IP fragments are reassembled before being sent to conntrack, the
> key from the last fragment is used.  Unless there are reordering
> issues, the last fragment received will not contain the L4 ports, so the
> key for the reassembled datagram won't contain them.  This patch updates
> the key once we have a reassembled datagram.
> 
> The handle_fragments() function works on L3 headers so we pull the L3/L4
> flow key update code from key_extract into a new function
> 'key_extract_l3l4'.  Then we add a another new function
> ovs_flow_key_update_l3l4() and export it so that it is accessible by
> handle_fragments() for conntrack packet reassembly.
> 
> Co-authored by: Justin Pettit <jpettit@....org>
> Signed-off-by: Greg Rose <gvrose8192@...il.com>

Applied with Co-authored-by fixed.