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_priv *vlan = vlan_dev_priv(dev);
33	__be16 vlan_id = htons(vlan->vlan_id);
34
35	if (vlan->vlan_proto != htons(ETH_P_8021Q))
36		return 0;
37	return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
38				 &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
39}
40
41void vlan_gvrp_request_leave(const struct net_device *dev)
42{
43	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
44	__be16 vlan_id = htons(vlan->vlan_id);
45
46	if (vlan->vlan_proto != htons(ETH_P_8021Q))
47		return;
48	garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
49			   &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
50}
51
52int vlan_gvrp_init_applicant(struct net_device *dev)
53{
54	return garp_init_applicant(dev, &vlan_gvrp_app);
55}
56
57void vlan_gvrp_uninit_applicant(struct net_device *dev)
58{
59	garp_uninit_applicant(dev, &vlan_gvrp_app);
60}
61
62int __init vlan_gvrp_init(void)
63{
64	return garp_register_application(&vlan_gvrp_app);
65}
66
67void vlan_gvrp_uninit(void)
68{
69	garp_unregister_application(&vlan_gvrp_app);
70}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * 	IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
 4 *
 5 * 	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
 
 
 
 
 6 */
 7#include <linux/types.h>
 8#include <linux/if_vlan.h>
 9#include <net/garp.h>
10#include "vlan.h"
11
12#define GARP_GVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
13
14enum gvrp_attributes {
15	GVRP_ATTR_INVALID,
16	GVRP_ATTR_VID,
17	__GVRP_ATTR_MAX
18};
19#define GVRP_ATTR_MAX	(__GVRP_ATTR_MAX - 1)
20
21static struct garp_application vlan_gvrp_app __read_mostly = {
22	.proto.group_address	= GARP_GVRP_ADDRESS,
23	.maxattr		= GVRP_ATTR_MAX,
24	.type			= GARP_APPLICATION_GVRP,
25};
26
27int vlan_gvrp_request_join(const struct net_device *dev)
28{
29	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
30	__be16 vlan_id = htons(vlan->vlan_id);
31
32	if (vlan->vlan_proto != htons(ETH_P_8021Q))
33		return 0;
34	return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
35				 &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
36}
37
38void vlan_gvrp_request_leave(const struct net_device *dev)
39{
40	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
41	__be16 vlan_id = htons(vlan->vlan_id);
42
43	if (vlan->vlan_proto != htons(ETH_P_8021Q))
44		return;
45	garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
46			   &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
47}
48
49int vlan_gvrp_init_applicant(struct net_device *dev)
50{
51	return garp_init_applicant(dev, &vlan_gvrp_app);
52}
53
54void vlan_gvrp_uninit_applicant(struct net_device *dev)
55{
56	garp_uninit_applicant(dev, &vlan_gvrp_app);
57}
58
59int __init vlan_gvrp_init(void)
60{
61	return garp_register_application(&vlan_gvrp_app);
62}
63
64void vlan_gvrp_uninit(void)
65{
66	garp_unregister_application(&vlan_gvrp_app);
67}