From: Hans Dedecker <dedeckeh@gmail.com>
Date: Wed, 7 May 2014 09:19:07 +0000 (+0000)
Subject: netifd: Effectively apply configured route mtu
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5dc8988377cccbdd9a520f21000d2cea1fc76f7f;p=project%2Fnetifd.git

netifd: Effectively apply configured route mtu

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/interface-ip.c b/interface-ip.c
index a82d8e7..33b5d43 100644
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -581,7 +581,7 @@ interface_update_proto_route(struct vlist_tree *tree,
 
 	if (node_old && node_new)
 		keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop)) &&
-			!route_old->failed;
+			(route_old->mtu == route_new->mtu) && !route_old->failed;
 
 	if (node_old) {
 		if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
diff --git a/system-linux.c b/system-linux.c
index 8f46705..b513948 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -1260,7 +1260,22 @@ static int system_rt(struct device *dev, struct device_route *route, int cmd)
 	if (table >= 256)
 		nla_put_u32(msg, RTA_TABLE, table);
 
+	if (route->flags & DEVROUTE_MTU) {
+		struct nlattr *metrics;
+
+		if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
+			goto nla_put_failure;
+
+		nla_put_u32(msg, RTAX_MTU, route->mtu);
+
+		nla_nest_end(msg, metrics);
+	}
+
 	return system_rtnl_call(msg);
+
+nla_put_failure:
+	nlmsg_free(msg);
+	return -ENOMEM;
 }
 
 int system_add_route(struct device *dev, struct device_route *route)