From: David Ahern Date: Mon, 5 Oct 2015 17:49:04 +0000 (-0700) Subject: net: Lookup actual route when oif is VRF device X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=deaa0a6a930edc79081268bf23b196d0340499af;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git net: Lookup actual route when oif is VRF device If the user specifies a VRF device in a get route query the custom route pointing to the VRF device is returned: $ ip route ls table vrf-red unreachable default broadcast 10.2.1.0 dev eth1 proto kernel scope link src 10.2.1.2 10.2.1.0/24 dev eth1 proto kernel scope link src 10.2.1.2 local 10.2.1.2 dev eth1 proto kernel scope host src 10.2.1.2 broadcast 10.2.1.255 dev eth1 proto kernel scope link src 10.2.1.2 $ ip route get oif vrf-red 10.2.1.40 10.2.1.40 dev vrf-red cache Add the flags to skip the custom route and go directly to the FIB. With this patch the actual route is returned: $ ip route get oif vrf-red 10.2.1.40 10.2.1.40 dev eth1 src 10.2.1.2 cache Signed-off-by: David Ahern Signed-off-by: David S. Miller --- diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 54e6f456a760..bf1486bd7e81 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2507,6 +2507,9 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh) fl4.flowi4_oif = tb[RTA_OIF] ? nla_get_u32(tb[RTA_OIF]) : 0; fl4.flowi4_mark = mark; + if (netif_index_is_l3_master(net, fl4.flowi4_oif)) + fl4.flowi4_flags = FLOWI_FLAG_L3MDEV_SRC | FLOWI_FLAG_SKIP_NH_OIF; + if (iif) { struct net_device *dev;