netifd: Link layer state awareness support on interface level

The link layer state is monitored for a given interface; an interface will be setup
when both enabled and link layer active. Likewise an interface will be teared down
when either disabled or link layer down.

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

1 files changed, 12 insertions, 4 deletions

diff --git a/alias.c b/alias.c
index 4e0a6be..cef125f 100644
--- a/alias.c
+++ b/alias.c
@@ -51,7 +51,7 @@ static void alias_set_device(struct alias_device *alias, struct device *dev)
 	device_remove_user(&alias->dep);
 	alias->dev.hidden = !dev;
 	if (dev) {
-		alias->dev.ifindex = dev->ifindex;
+		device_set_ifindex(&alias->dev, dev->ifindex);
 		strcpy(alias->dev.ifname, dev->ifname);
 		device_broadcast_event(&alias->dev, DEV_EVENT_UPDATE_IFNAME);
 		device_add_user(&alias->dep, dev);
@@ -83,14 +83,22 @@ alias_device_set_state(struct device *dev, bool state)
 static void alias_device_cb(struct device_user *dep, enum device_event ev)
 {
 	struct alias_device *alias;
-	bool present = false;
+	bool new_state = false;
 
 	alias = container_of(dep, struct alias_device, dep);
 	switch (ev) {
 	case DEV_EVENT_ADD:
-		present = true;
+		new_state = true;
 	case DEV_EVENT_REMOVE:
-		device_set_present(&alias->dev, present);
+		device_set_present(&alias->dev, new_state);
+		break;
+	case DEV_EVENT_LINK_UP:
+		new_state = true;
+	case DEV_EVENT_LINK_DOWN:
+		device_set_link(&alias->dev, new_state);
+		break;
+	case DEV_EVENT_UPDATE_IFINDEX:
+		device_set_ifindex(&alias->dev, dep->dev->ifindex);
 		break;
 	default:
 		device_broadcast_event(&alias->dev, ev);