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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 | |
17 | enum 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 | |
24 | static 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 | |
30 | int vlan_gvrp_request_join(const struct net_device *dev) |
31 | { |
32 | const struct vlan_dev_info *vlan = vlan_dev_info(dev); |
33 | __be16 vlan_id = htons(vlan->vlan_id); |
34 | |
35 | return garp_request_join(vlan->real_dev, &vlan_gvrp_app, |
36 | &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID); |
37 | } |
38 | |
39 | void vlan_gvrp_request_leave(const struct net_device *dev) |
40 | { |
41 | const struct vlan_dev_info *vlan = vlan_dev_info(dev); |
42 | __be16 vlan_id = htons(vlan->vlan_id); |
43 | |
44 | garp_request_leave(vlan->real_dev, &vlan_gvrp_app, |
45 | &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID); |
46 | } |
47 | |
48 | int vlan_gvrp_init_applicant(struct net_device *dev) |
49 | { |
50 | return garp_init_applicant(dev, &vlan_gvrp_app); |
51 | } |
52 | |
53 | void vlan_gvrp_uninit_applicant(struct net_device *dev) |
54 | { |
55 | garp_uninit_applicant(dev, &vlan_gvrp_app); |
56 | } |
57 | |
58 | int __init vlan_gvrp_init(void) |
59 | { |
60 | return garp_register_application(&vlan_gvrp_app); |
61 | } |
62 | |
63 | void vlan_gvrp_uninit(void) |
64 | { |
65 | garp_unregister_application(&vlan_gvrp_app); |
66 | } |
67 |
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