• David Ahern's avatar
    net: Propagate lookup failure in l3mdev_get_saddr to caller · b5bdacf3
    David Ahern authored
    Commands run in a vrf context are not failing as expected on a route lookup:
        root@kenny:~# ip ro ls table vrf-red
        unreachable default
    
        root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
        ping: Warning: source address might be selected on device other than vrf-red.
        PING 10.100.1.254 (10.100.1.254) from 0.0.0.0 vrf-red: 56(84) bytes of data.
    
        --- 10.100.1.254 ping statistics ---
        2 packets transmitted, 0 received, 100% packet loss, time 999ms
    
    Since the vrf table does not have a route for 10.100.1.254 the ping
    should have failed. The saddr lookup causes a full VRF table lookup.
    Propogating a lookup failure to the user allows the command to fail as
    expected:
    
        root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
        connect: No route to host
    Signed-off-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    b5bdacf3
udp.c 64.5 KB