Benjamin Poirier fd52e1f8c0 net: mpls: Fix notifications when deleting a device ...

commit 7d4741eacd upstream.

There are various problems related to netlink notifications for mpls route
changes in response to interfaces being deleted:
* delete interface of only nexthop
	DELROUTE notification is missing RTA_OIF attribute
* delete interface of non-last nexthop
	NEWROUTE notification is missing entirely
* delete interface of last nexthop
	DELROUTE notification is missing nexthop

All of these problems stem from the fact that existing routes are modified
in-place before sending a notification. Restructure mpls_ifdown() to avoid
changing the route in the DELROUTE cases and to create a copy in the
NEWROUTE case.

Fixes: f8efb73c97 ("mpls: multipath route support")
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-12-08 09:03:23 +01:00

..

af_mpls.c

net: mpls: Fix notifications when deleting a device

2021-12-08 09:03:23 +01:00

internal.h

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Kconfig

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Makefile

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mpls_gso.c

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mpls_iptunnel.c

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