tree 848d1134aedf7b4a52efb58863675e90a8b4925a
parent de508f8b5a1eb965c63ac6741acb19b703005cb6
author David Ahern <dsahern@gmail.com> 1531005326 -0700
committer David S. Miller <davem@davemloft.net> 1531014898 +0900

net/ipv4: Set oif in fib_compute_spec_dst

Xin reported that icmp replies may not use the address on the device the
echo request is received if the destination address is broadcast. Instead
a route lookup is done without considering VRF context. Fix by setting
oif in flow struct to the master device if it is enslaved. That directs
the lookup to the VRF table. If the device is not enslaved, oif is still
0 so no affect.

Fixes: cd2fbe1b6b51 ("net: Use VRF device index for lookups on RX")
Reported-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>