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_priv *vlan = vlan_dev_priv(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_priv *vlan = vlan_dev_priv(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