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

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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@xxxxxxxxxxxxxxxxxxx>

[ 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@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: David Ahern <dsahern@xxxxxxxxx>
Tested-by: David Ahern <dsahern@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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



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