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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 | |
21 | enum 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 | |
28 | static 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 | |
36 | int 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 | |
47 | void 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 | |
58 | int vlan_mvrp_init_applicant(struct net_device *dev) |
59 | { |
60 | return mrp_init_applicant(dev, &vlan_mrp_app); |
61 | } |
62 | |
63 | void vlan_mvrp_uninit_applicant(struct net_device *dev) |
64 | { |
65 | mrp_uninit_applicant(dev, &vlan_mrp_app); |
66 | } |
67 | |
68 | int __init vlan_mvrp_init(void) |
69 | { |
70 | return mrp_register_application(&vlan_mrp_app); |
71 | } |
72 | |
73 | void vlan_mvrp_uninit(void) |
74 | { |
75 | mrp_unregister_application(&vlan_mrp_app); |
76 | } |
77 |
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