1/*
2 * 	IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
3 *
4 * 	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
5 *
6 *	This program is free software; you can redistribute it and/or
7 *	modify it under the terms of the GNU General Public License
8 *	version 2 as published by the Free Software Foundation.
9 */
10#include <linux/types.h>
11#include <linux/if_vlan.h>
12#include <net/garp.h>
13#include "vlan.h"
14
15#define GARP_GVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
16
17enum gvrp_attributes {
18	GVRP_ATTR_INVALID,
19	GVRP_ATTR_VID,
20	__GVRP_ATTR_MAX
21};
22#define GVRP_ATTR_MAX	(__GVRP_ATTR_MAX - 1)
23
24static struct garp_application vlan_gvrp_app __read_mostly = {
25	.proto.group_address	= GARP_GVRP_ADDRESS,
26	.maxattr		= GVRP_ATTR_MAX,
27	.type			= GARP_APPLICATION_GVRP,
28};
29
30int vlan_gvrp_request_join(const struct net_device *dev)
31{
32	const struct vlan_dev_info *vlan = vlan_dev_info(dev);
33	__be16 vlan_id = htons(vlan->vlan_id);
34
35	return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
36				 &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
37}
38
39void vlan_gvrp_request_leave(const struct net_device *dev)
40{
41	const struct vlan_dev_info *vlan = vlan_dev_info(dev);
42	__be16 vlan_id = htons(vlan->vlan_id);
43
44	garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
45			   &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
46}
47
48int vlan_gvrp_init_applicant(struct net_device *dev)
49{
50	return garp_init_applicant(dev, &vlan_gvrp_app);
51}
52
53void vlan_gvrp_uninit_applicant(struct net_device *dev)
54{
55	garp_uninit_applicant(dev, &vlan_gvrp_app);
56}
57
58int __init vlan_gvrp_init(void)
59{
60	return garp_register_application(&vlan_gvrp_app);
61}
62
63void vlan_gvrp_uninit(void)
64{
65	garp_unregister_application(&vlan_gvrp_app);
66}
67