From e64619267d7b4e5f5fec57718c0e11e7844dc9ee Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 4 May 2012 15:01:22 +0200
Subject: [PATCH] convert interface event queueing to global interface notifier

---
 interface-event.c | 28 ++++++++++++++++++++++++++--
 interface.c       |  3 ---
 interface.h       |  3 ---
 3 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/interface-event.c b/interface-event.c
index 5ab6240..8a92ee7 100644
--- a/interface-event.c
+++ b/interface-event.c
@@ -80,7 +80,7 @@ task_complete(struct uloop_process *proc, int ret)
  * When queueing an event that is the same as the one waiting for
  * completion, remove the interface from the queue
  */
-void
+static void
 interface_queue_event(struct interface *iface, enum interface_event ev)
 {
 	enum interface_event last_ev;
@@ -102,7 +102,7 @@ interface_queue_event(struct interface *iface, enum interface_event ev)
 		call_hotplug();
 }
 
-void
+static void
 interface_dequeue_event(struct interface *iface)
 {
 	if (iface == current)
@@ -111,3 +111,27 @@ interface_dequeue_event(struct interface *iface)
 	if (!list_empty(&iface->hotplug_list))
 		list_del_init(&iface->hotplug_list);
 }
+
+static void interface_event_cb(struct interface_user *dep, struct interface *iface,
+			       enum interface_event ev)
+{
+	switch (ev) {
+		case IFEV_UP:
+		case IFEV_DOWN:
+			interface_queue_event(iface, ev);
+			break;
+		case IFEV_FREE:
+		case IFEV_RELOAD:
+			interface_dequeue_event(iface);
+			break;
+	}
+}
+
+static struct interface_user event_user = {
+	.cb = interface_event_cb
+};
+
+static void __init interface_event_init(void)
+{
+	interface_add_user(&event_user, NULL);
+}
diff --git a/interface.c b/interface.c
index 892dade..e43791c 100644
--- a/interface.c
+++ b/interface.c
@@ -127,8 +127,6 @@ interface_event(struct interface *iface, enum interface_event ev)
 
 	list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
 		dep->cb(dep, iface, ev);
-
-	interface_queue_event(iface, ev);
 }
 
 static void
@@ -252,7 +250,6 @@ interface_cleanup(struct interface *iface, bool reload)
 	list_for_each_entry_safe(dep, tmp, &iface->users, list)
 		interface_remove_user(dep);
 
-	interface_dequeue_event(iface);
 	interface_ip_flush(&iface->config_ip);
 	interface_flush_state(iface);
 	interface_clear_errors(iface);
diff --git a/interface.h b/interface.h
index 4b4326a..bfdc28e 100644
--- a/interface.h
+++ b/interface.h
@@ -139,9 +139,6 @@ int interface_add_data(struct interface *iface, const struct blob_attr *data);
 void interface_update_start(struct interface *iface);
 void interface_update_complete(struct interface *iface);
 
-void interface_queue_event(struct interface *iface, enum interface_event ev);
-void interface_dequeue_event(struct interface *iface);
-
 void interface_start_pending(void);
 
 #endif
-- 
2.25.1