tree 1c715c26a58ccdf144f8ff5cd64d7ff5ab1bf36b
parent 57a574993d94671b495cdbe8aeb78b745abfe14f
author Timo Teras <timo.teras@iki.fi> 1232414532 -0800
committer David S. Miller <davem@davemloft.net> 1232577294 -0800

gre: strict physical device binding

Check the device on receive path and allow otherwise identical devices
as long as the physical device differs.

This is useful for NBMA tunnels, where you want to use different gre IP
for each public IP available via different physical devices.

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>