linux-kernel - Re: [PATCH AUTOSEL 4.9 89/99] vrf: mark skb for multicast or link-local as enslaved to VRF

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Message-ID: <20191125143518.GF5861@sasha-vm>
Date:   Mon, 25 Nov 2019 09:35:18 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Mike Manning <mmanning@...tta.att-mail.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.9 89/99] vrf: mark skb for multicast or
 link-local as enslaved to VRF

On Sun, Nov 17, 2019 at 09:44:38AM -0700, David Ahern wrote:
>On 11/16/19 8:50 AM, Sasha Levin wrote:
>> From: Mike Manning <mmanning@...tta.att-mail.com>
>>
>> [ Upstream commit 6f12fa775530195a501fb090d092c637f32d0cc5 ]
>>
>> The skb for packets that are multicast or to a link-local address are
>> not marked as being enslaved to a VRF, if they are received on a socket
>> bound to the VRF. This is needed for ND and it is preferable for the
>> kernel not to have to deal with the additional use-cases if ll or mcast
>> packets are handled as enslaved. However, this does not allow service
>> instances listening on unbound and bound to VRF sockets to distinguish
>> the VRF used, if packets are sent as multicast or to a link-local
>> address. The fix is for the VRF driver to also mark these skb as being
>> enslaved to the VRF.
>>
>> Signed-off-by: Mike Manning <mmanning@...tta.att-mail.com>
>> Reviewed-by: David Ahern <dsahern@...il.com>
>> Tested-by: David Ahern <dsahern@...il.com>
>> Signed-off-by: David S. Miller <davem@...emloft.net>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>> ---
>>  drivers/net/vrf.c | 19 +++++++++----------
>>  1 file changed, 9 insertions(+), 10 deletions(-)
>>
>
>backporting this patch and it's bug fix, "ipv6: Fix handling of LLA with
>VRF and sockets bound to VRF" to 4.14 is a bit questionable. They
>definitely do not need to come back to 4.9.

I'll drop it, thanks.

-- 
Thanks,
Sasha