blob: 36dcee8fc84a27dc29785e9a1adfecb8f021ee57 [file] [log] [blame]
Jesse Grossccb13522011-10-25 19:26:31 -07001/*
Raju Subramaniancaf2ee12012-05-03 18:55:23 -07002 * Copyright (c) 2007-2012 Nicira, Inc.
Jesse Grossccb13522011-10-25 19:26:31 -07003 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301, USA
17 */
18
19#include <linux/netdevice.h>
20#include <net/genetlink.h>
21
22#include "datapath.h"
23#include "vport-internal_dev.h"
24#include "vport-netdev.h"
25
26static int dp_device_event(struct notifier_block *unused, unsigned long event,
27 void *ptr)
28{
29 struct net_device *dev = ptr;
30 struct vport *vport;
31
32 if (ovs_is_internal_dev(dev))
33 vport = ovs_internal_dev_get_vport(dev);
34 else
35 vport = ovs_netdev_get_vport(dev);
36
37 if (!vport)
38 return NOTIFY_DONE;
39
40 switch (event) {
41 case NETDEV_UNREGISTER:
42 if (!ovs_is_internal_dev(dev)) {
43 struct sk_buff *notify;
44
45 notify = ovs_vport_cmd_build_info(vport, 0, 0,
46 OVS_VPORT_CMD_DEL);
47 ovs_dp_detach_port(vport);
48 if (IS_ERR(notify)) {
49 netlink_set_err(init_net.genl_sock, 0,
50 ovs_dp_vport_multicast_group.id,
51 PTR_ERR(notify));
52 break;
53 }
54
55 genlmsg_multicast(notify, 0, ovs_dp_vport_multicast_group.id,
56 GFP_KERNEL);
57 }
58 break;
59 }
60
61 return NOTIFY_DONE;
62}
63
64struct notifier_block ovs_dp_device_notifier = {
65 .notifier_call = dp_device_event
66};