1/*
 2 *	IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
 3 *
 4 *	Copyright (c) 2012 Massachusetts Institute of Technology
 5 *
 6 *	Adapted from code in net/8021q/vlan_gvrp.c
 7 *	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
 8 *
 9 *	This program is free software; you can redistribute it and/or
10 *	modify it under the terms of the GNU General Public License
11 *	version 2 as published by the Free Software Foundation.
12 */
13#include <linux/types.h>
14#include <linux/if_ether.h>
15#include <linux/if_vlan.h>
16#include <net/mrp.h>
17#include "vlan.h"
18
19#define MRP_MVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
20
21enum mvrp_attributes {
22	MVRP_ATTR_INVALID,
23	MVRP_ATTR_VID,
24	__MVRP_ATTR_MAX
25};
26#define MVRP_ATTR_MAX	(__MVRP_ATTR_MAX - 1)
27
28static struct mrp_application vlan_mrp_app __read_mostly = {
29	.type		= MRP_APPLICATION_MVRP,
30	.maxattr	= MVRP_ATTR_MAX,
31	.pkttype.type	= htons(ETH_P_MVRP),
32	.group_address	= MRP_MVRP_ADDRESS,
33	.version	= 0,
34};
35
36int vlan_mvrp_request_join(const struct net_device *dev)
37{
38	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
39	__be16 vlan_id = htons(vlan->vlan_id);
40
41	if (vlan->vlan_proto != htons(ETH_P_8021Q))
42		return 0;
43	return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
44				&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
45}
46
47void vlan_mvrp_request_leave(const struct net_device *dev)
48{
49	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
50	__be16 vlan_id = htons(vlan->vlan_id);
51
52	if (vlan->vlan_proto != htons(ETH_P_8021Q))
53		return;
54	mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
55			  &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
56}
57
58int vlan_mvrp_init_applicant(struct net_device *dev)
59{
60	return mrp_init_applicant(dev, &vlan_mrp_app);
61}
62
63void vlan_mvrp_uninit_applicant(struct net_device *dev)
64{
65	mrp_uninit_applicant(dev, &vlan_mrp_app);
66}
67
68int __init vlan_mvrp_init(void)
69{
70	return mrp_register_application(&vlan_mrp_app);
71}
72
73void vlan_mvrp_uninit(void)
74{
75	mrp_unregister_application(&vlan_mrp_app);
76}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *	IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
 4 *
 5 *	Copyright (c) 2012 Massachusetts Institute of Technology
 6 *
 7 *	Adapted from code in net/8021q/vlan_gvrp.c
 8 *	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
 
 
 
 
 9 */
10#include <linux/types.h>
11#include <linux/if_ether.h>
12#include <linux/if_vlan.h>
13#include <net/mrp.h>
14#include "vlan.h"
15
16#define MRP_MVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
17
18enum mvrp_attributes {
19	MVRP_ATTR_INVALID,
20	MVRP_ATTR_VID,
21	__MVRP_ATTR_MAX
22};
23#define MVRP_ATTR_MAX	(__MVRP_ATTR_MAX - 1)
24
25static struct mrp_application vlan_mrp_app __read_mostly = {
26	.type		= MRP_APPLICATION_MVRP,
27	.maxattr	= MVRP_ATTR_MAX,
28	.pkttype.type	= htons(ETH_P_MVRP),
29	.group_address	= MRP_MVRP_ADDRESS,
30	.version	= 0,
31};
32
33int vlan_mvrp_request_join(const struct net_device *dev)
34{
35	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
36	__be16 vlan_id = htons(vlan->vlan_id);
37
38	if (vlan->vlan_proto != htons(ETH_P_8021Q))
39		return 0;
40	return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
41				&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
42}
43
44void vlan_mvrp_request_leave(const struct net_device *dev)
45{
46	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
47	__be16 vlan_id = htons(vlan->vlan_id);
48
49	if (vlan->vlan_proto != htons(ETH_P_8021Q))
50		return;
51	mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
52			  &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
53}
54
55int vlan_mvrp_init_applicant(struct net_device *dev)
56{
57	return mrp_init_applicant(dev, &vlan_mrp_app);
58}
59
60void vlan_mvrp_uninit_applicant(struct net_device *dev)
61{
62	mrp_uninit_applicant(dev, &vlan_mrp_app);
63}
64
65int __init vlan_mvrp_init(void)
66{
67	return mrp_register_application(&vlan_mrp_app);
68}
69
70void vlan_mvrp_uninit(void)
71{
72	mrp_unregister_application(&vlan_mrp_app);
73}