1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2012 Massachusetts Institute of Technology
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Adapted from code in net/8021q/vlan_gvrp.c
8*4882a593Smuzhiyun * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun #include <linux/types.h>
11*4882a593Smuzhiyun #include <linux/if_ether.h>
12*4882a593Smuzhiyun #include <linux/if_vlan.h>
13*4882a593Smuzhiyun #include <net/mrp.h>
14*4882a593Smuzhiyun #include "vlan.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define MRP_MVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun enum mvrp_attributes {
19*4882a593Smuzhiyun MVRP_ATTR_INVALID,
20*4882a593Smuzhiyun MVRP_ATTR_VID,
21*4882a593Smuzhiyun __MVRP_ATTR_MAX
22*4882a593Smuzhiyun };
23*4882a593Smuzhiyun #define MVRP_ATTR_MAX (__MVRP_ATTR_MAX - 1)
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static struct mrp_application vlan_mrp_app __read_mostly = {
26*4882a593Smuzhiyun .type = MRP_APPLICATION_MVRP,
27*4882a593Smuzhiyun .maxattr = MVRP_ATTR_MAX,
28*4882a593Smuzhiyun .pkttype.type = htons(ETH_P_MVRP),
29*4882a593Smuzhiyun .group_address = MRP_MVRP_ADDRESS,
30*4882a593Smuzhiyun .version = 0,
31*4882a593Smuzhiyun };
32*4882a593Smuzhiyun
vlan_mvrp_request_join(const struct net_device * dev)33*4882a593Smuzhiyun int vlan_mvrp_request_join(const struct net_device *dev)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
36*4882a593Smuzhiyun __be16 vlan_id = htons(vlan->vlan_id);
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun if (vlan->vlan_proto != htons(ETH_P_8021Q))
39*4882a593Smuzhiyun return 0;
40*4882a593Smuzhiyun return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
41*4882a593Smuzhiyun &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
vlan_mvrp_request_leave(const struct net_device * dev)44*4882a593Smuzhiyun void vlan_mvrp_request_leave(const struct net_device *dev)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
47*4882a593Smuzhiyun __be16 vlan_id = htons(vlan->vlan_id);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun if (vlan->vlan_proto != htons(ETH_P_8021Q))
50*4882a593Smuzhiyun return;
51*4882a593Smuzhiyun mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
52*4882a593Smuzhiyun &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
vlan_mvrp_init_applicant(struct net_device * dev)55*4882a593Smuzhiyun int vlan_mvrp_init_applicant(struct net_device *dev)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun return mrp_init_applicant(dev, &vlan_mrp_app);
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
vlan_mvrp_uninit_applicant(struct net_device * dev)60*4882a593Smuzhiyun void vlan_mvrp_uninit_applicant(struct net_device *dev)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun mrp_uninit_applicant(dev, &vlan_mrp_app);
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
vlan_mvrp_init(void)65*4882a593Smuzhiyun int __init vlan_mvrp_init(void)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun return mrp_register_application(&vlan_mrp_app);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
vlan_mvrp_uninit(void)70*4882a593Smuzhiyun void vlan_mvrp_uninit(void)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun mrp_unregister_application(&vlan_mrp_app);
73*4882a593Smuzhiyun }
74