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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
86fbe9bb DW |
2 | /* |
3 | * IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP) | |
4 | * | |
5 | * Copyright (c) 2012 Massachusetts Institute of Technology | |
6 | * | |
7 | * Adapted from code in net/8021q/vlan_gvrp.c | |
8 | * Copyright (c) 2008 Patrick McHardy <kaber@trash.net> | |
86fbe9bb DW |
9 | */ |
10 | #include <linux/types.h> | |
11 | #include <linux/if_ether.h> | |
12 | #include <linux/if_vlan.h> | |
13 | #include <net/mrp.h> | |
14 | #include "vlan.h" | |
15 | ||
16 | #define MRP_MVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 } | |
17 | ||
18 | enum mvrp_attributes { | |
19 | MVRP_ATTR_INVALID, | |
20 | MVRP_ATTR_VID, | |
21 | __MVRP_ATTR_MAX | |
22 | }; | |
23 | #define MVRP_ATTR_MAX (__MVRP_ATTR_MAX - 1) | |
24 | ||
25 | static struct mrp_application vlan_mrp_app __read_mostly = { | |
26 | .type = MRP_APPLICATION_MVRP, | |
27 | .maxattr = MVRP_ATTR_MAX, | |
28 | .pkttype.type = htons(ETH_P_MVRP), | |
29 | .group_address = MRP_MVRP_ADDRESS, | |
30 | .version = 0, | |
31 | }; | |
32 | ||
33 | int vlan_mvrp_request_join(const struct net_device *dev) | |
34 | { | |
35 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); | |
36 | __be16 vlan_id = htons(vlan->vlan_id); | |
37 | ||
1fd9b1fc PM |
38 | if (vlan->vlan_proto != htons(ETH_P_8021Q)) |
39 | return 0; | |
86fbe9bb DW |
40 | return mrp_request_join(vlan->real_dev, &vlan_mrp_app, |
41 | &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID); | |
42 | } | |
43 | ||
44 | void vlan_mvrp_request_leave(const struct net_device *dev) | |
45 | { | |
46 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); | |
47 | __be16 vlan_id = htons(vlan->vlan_id); | |
48 | ||
1fd9b1fc PM |
49 | if (vlan->vlan_proto != htons(ETH_P_8021Q)) |
50 | return; | |
86fbe9bb DW |
51 | mrp_request_leave(vlan->real_dev, &vlan_mrp_app, |
52 | &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID); | |
53 | } | |
54 | ||
55 | int vlan_mvrp_init_applicant(struct net_device *dev) | |
56 | { | |
57 | return mrp_init_applicant(dev, &vlan_mrp_app); | |
58 | } | |
59 | ||
60 | void vlan_mvrp_uninit_applicant(struct net_device *dev) | |
61 | { | |
62 | mrp_uninit_applicant(dev, &vlan_mrp_app); | |
63 | } | |
64 | ||
65 | int __init vlan_mvrp_init(void) | |
66 | { | |
67 | return mrp_register_application(&vlan_mrp_app); | |
68 | } | |
69 | ||
70 | void vlan_mvrp_uninit(void) | |
71 | { | |
72 | mrp_unregister_application(&vlan_mrp_app); | |
73 | } |