lwtunnel: ip tunnel: fix multiple routes with different encap
authorJiri Benc <jbenc@redhat.com>
Tue, 18 Aug 2015 16:42:09 +0000 (18:42 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 19 Aug 2015 02:11:20 +0000 (19:11 -0700)
commit2d79849903e00fb445038ddd8afb2acfbf89eb7f
treeeb953da9a29b775a36b8f8c036b4330b461b4317
parentdf383e6240ef222703648072dafd2a1ae21b0d2a
lwtunnel: ip tunnel: fix multiple routes with different encap

Currently, two routes going through the same tunnel interface are considered
the same even when they are routed to a different host after encapsulation.
This causes all routes added after the first one to have incorrect
encapsulation parameters.

This is nicely visible by doing:

  # ip r a 192.168.1.2/32 dev vxlan0 tunnel dst 10.0.0.2
  # ip r a 192.168.1.3/32 dev vxlan0 tunnel dst 10.0.0.3
  # ip r
  [...]
  192.168.1.2/32 tunnel id 0 src 0.0.0.0 dst 10.0.0.2 [...]
  192.168.1.3/32 tunnel id 0 src 0.0.0.0 dst 10.0.0.2 [...]

Implement the missing comparison function.

Fixes: 3093fbe7ff4bc ("route: Per route IP tunnel metadata via lightweight tunnel")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ip_tunnel_core.c