Subject: [PATCH net] ipv6: Default fib6_type to RTN_UNICAST when not set

From: David Ahern <[email-masked]>
Date: Wed, 19 Jun 2019 10:50:24 -0700

From: David Ahern <[email-masked]>

A user reported that routes are getting installed with type 0 (RTN_UNSPEC)
where before the routes were RTN_UNICAST. One example is from accel-ppp
which apparently still uses the ioctl interface and does not set
rtmsg_type. Another is the netlink interface where ipv6 does not require
rtm_type to be set (v4 does). Prior to the commit in the Fixes tag the
ipv6 stack converted type 0 to RTN_UNICAST, so restore that behavior.

Fixes: e8478e80e5a7 ("net/ipv6: Save route type in rt6_info")
Signed-off-by: David Ahern <[email-masked]>
---
 net/ipv6/route.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0f60eb3a2873..11ad62effd56 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3184,7 +3184,7 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
 
 	rt->fib6_table = table;
 	rt->fib6_metric = cfg->fc_metric;
-	rt->fib6_type = cfg->fc_type;
+	rt->fib6_type = cfg->fc_type ? : RTN_UNICAST;
 	rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY;
 
 	ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
-- 
2.11.0