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David Ward86fbe9b2013-02-08 17:17:07 +00001/*
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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000041 if (vlan->vlan_proto != htons(ETH_P_8021Q))
42 return 0;
David Ward86fbe9b2013-02-08 17:17:07 +000043 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
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000052 if (vlan->vlan_proto != htons(ETH_P_8021Q))
53 return;
David Ward86fbe9b2013-02-08 17:17:07 +000054 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}