1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <linux/types.h>
8*4882a593Smuzhiyun #include <linux/if_vlan.h>
9*4882a593Smuzhiyun #include <net/garp.h>
10*4882a593Smuzhiyun #include "vlan.h"
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #define GARP_GVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun enum gvrp_attributes {
15*4882a593Smuzhiyun GVRP_ATTR_INVALID,
16*4882a593Smuzhiyun GVRP_ATTR_VID,
17*4882a593Smuzhiyun __GVRP_ATTR_MAX
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun #define GVRP_ATTR_MAX (__GVRP_ATTR_MAX - 1)
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun static struct garp_application vlan_gvrp_app __read_mostly = {
22*4882a593Smuzhiyun .proto.group_address = GARP_GVRP_ADDRESS,
23*4882a593Smuzhiyun .maxattr = GVRP_ATTR_MAX,
24*4882a593Smuzhiyun .type = GARP_APPLICATION_GVRP,
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
vlan_gvrp_request_join(const struct net_device * dev)27*4882a593Smuzhiyun int vlan_gvrp_request_join(const struct net_device *dev)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
30*4882a593Smuzhiyun __be16 vlan_id = htons(vlan->vlan_id);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun if (vlan->vlan_proto != htons(ETH_P_8021Q))
33*4882a593Smuzhiyun return 0;
34*4882a593Smuzhiyun return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
35*4882a593Smuzhiyun &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
vlan_gvrp_request_leave(const struct net_device * dev)38*4882a593Smuzhiyun void vlan_gvrp_request_leave(const struct net_device *dev)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
41*4882a593Smuzhiyun __be16 vlan_id = htons(vlan->vlan_id);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if (vlan->vlan_proto != htons(ETH_P_8021Q))
44*4882a593Smuzhiyun return;
45*4882a593Smuzhiyun garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
46*4882a593Smuzhiyun &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
vlan_gvrp_init_applicant(struct net_device * dev)49*4882a593Smuzhiyun int vlan_gvrp_init_applicant(struct net_device *dev)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun return garp_init_applicant(dev, &vlan_gvrp_app);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
vlan_gvrp_uninit_applicant(struct net_device * dev)54*4882a593Smuzhiyun void vlan_gvrp_uninit_applicant(struct net_device *dev)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun garp_uninit_applicant(dev, &vlan_gvrp_app);
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
vlan_gvrp_init(void)59*4882a593Smuzhiyun int __init vlan_gvrp_init(void)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun return garp_register_application(&vlan_gvrp_app);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
vlan_gvrp_uninit(void)64*4882a593Smuzhiyun void vlan_gvrp_uninit(void)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun garp_unregister_application(&vlan_gvrp_app);
67*4882a593Smuzhiyun }
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