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

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Message-ID: <CAOrHB_DXXSoe9rjamp_OSxDonsqTADrbV4GdUdct=uq_eOXN-Q@mail.gmail.com>
Date:   Tue, 27 Aug 2019 17:33:36 -0700
From:   Pravin Shelar <pshelar@....org>
To:     Greg Rose <gvrose8192@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Joe Stringer <joe@...d.net.nz>
Subject: Re: [PATCH V3 net 1/2] openvswitch: Properly set L4 keys on "later"
 IP fragments

On Tue, Aug 27, 2019 at 7:58 AM Greg Rose <gvrose8192@...il.com> wrote:
>
> 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>
>
Looks good to me.

Acked-by: Pravin B Shelar <pshelar@....org>

Thanks,
Pravin.