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authorDavid Ahern <dsa@cumulusnetworks.com>2016-01-04 09:09:27 -0800
committerDavid S. Miller <davem@davemloft.net>2016-01-04 22:58:30 -0500
commitb5bdacf3bb027ba0af4d61b38ec289bfc8b64372 (patch)
tree1346f43639075874a2c82c5d67dad70a3b95e493 /include/net/route.h
parent7ec2541aa7a026874930d6117e86fe2e76fb1587 (diff)
downloadlinux-b5bdacf3bb027ba0af4d61b38ec289bfc8b64372.tar.bz2
net: Propagate lookup failure in l3mdev_get_saddr to caller
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: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/route.h')
-rw-r--r--include/net/route.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/net/route.h b/include/net/route.h
index ee81307863d5..a3b9ef74a389 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -283,7 +283,12 @@ static inline struct rtable *ip_route_connect(struct flowi4 *fl4,
sport, dport, sk);
if (!src && oif) {
- l3mdev_get_saddr(net, oif, fl4);
+ int rc;
+
+ rc = l3mdev_get_saddr(net, oif, fl4);
+ if (rc < 0)
+ return ERR_PTR(rc);
+
src = fl4->saddr;
}
if (!dst || !src) {