From 6104e112f4a613506ba1ea9d4b974279f888006b Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 12 Oct 2016 13:20:11 -0700 Subject: net: ipv4: Do not drop to make_route if oif is l3mdev Commit e0d56fdd7342 was a bit aggressive removing l3mdev calls in the IPv4 stack. If the fib_lookup fails we do not want to drop to make_route if the oif is an l3mdev device. Also reverts 19664c6a0009 ("net: l3mdev: Remove netif_index_is_l3_master") which removed netif_index_is_l3_master. Fixes: e0d56fdd7342 ("net: l3mdev: remove redundant calls") Signed-off-by: David Ahern Signed-off-by: David S. Miller --- include/net/l3mdev.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/net') diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h index b220dabeab45..3832099289c5 100644 --- a/include/net/l3mdev.h +++ b/include/net/l3mdev.h @@ -114,6 +114,25 @@ static inline u32 l3mdev_fib_table(const struct net_device *dev) return tb_id; } +static inline bool netif_index_is_l3_master(struct net *net, int ifindex) +{ + struct net_device *dev; + bool rc = false; + + if (ifindex == 0) + return false; + + rcu_read_lock(); + + dev = dev_get_by_index_rcu(net, ifindex); + if (dev) + rc = netif_is_l3_master(dev); + + rcu_read_unlock(); + + return rc; +} + struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6); static inline @@ -207,6 +226,11 @@ static inline u32 l3mdev_fib_table_by_index(struct net *net, int ifindex) return 0; } +static inline bool netif_index_is_l3_master(struct net *net, int ifindex) +{ + return false; +} + static inline struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6) { -- cgit v1.2.3