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