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 return mrp_request_join(vlan->real_dev, &vlan_mrp_app, 42 &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID); 43 } 44 45 void vlan_mvrp_request_leave(const struct net_device *dev) 46 { 47 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 48 __be16 vlan_id = htons(vlan->vlan_id); 49 50 mrp_request_leave(vlan->real_dev, &vlan_mrp_app, 51 &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID); 52 } 53 54 int vlan_mvrp_init_applicant(struct net_device *dev) 55 { 56 return mrp_init_applicant(dev, &vlan_mrp_app); 57 } 58 59 void vlan_mvrp_uninit_applicant(struct net_device *dev) 60 { 61 mrp_uninit_applicant(dev, &vlan_mrp_app); 62 } 63 64 int __init vlan_mvrp_init(void) 65 { 66 return mrp_register_application(&vlan_mrp_app); 67 } 68 69 void vlan_mvrp_uninit(void) 70 { 71 mrp_unregister_application(&vlan_mrp_app); 72 } 73