From bdf79ec8dc772d492dc75a4cb75525431230fadb Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Thu, 4 Jan 2007 03:09:28 +0000
Subject: Use hotplug support to notify persistent reference holders when a
 net_device is unregistered.

---
 src/net/netdevice.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/net')

diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index 3f8e54bb1..3949d26de 100644
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -161,6 +161,7 @@ struct net_device * alloc_netdev ( size_t priv_size ) {
 
 	netdev = calloc ( 1, sizeof ( *netdev ) + priv_size );
 	if ( netdev ) {
+		INIT_LIST_HEAD ( &netdev->references );
 		INIT_LIST_HEAD ( &netdev->rx_queue );
 		netdev->priv = ( ( ( void * ) netdev ) + sizeof ( *netdev ) );
 	}
@@ -201,6 +202,9 @@ void unregister_netdev ( struct net_device *netdev ) {
 		free_pkb ( pkb );
 	}
 
+	/* Kill off any persistent references to this device */
+	forget_references ( &netdev->references );
+
 	/* Remove from device list */
 	list_del ( &netdev->list );
 	DBG ( "%s unregistered\n", netdev_name ( netdev ) );
-- 
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