vlan.c revision 29906f6a427d2004a515ebbcdc7b28bae8f6c19c
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * INET 802.1Q VLAN 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Ethernet-type device handling. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Authors: Ben Greear <greearb@candelatech.com> 6ad712087f78469a783281d0d15657edfbff69594Patrick McHardy * Please send support related email to: netdev@vger.kernel.org 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html 8122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Fixes: 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Fix for packet capture - Nick Eggleston <nick@dccinc.com>; 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Add HW acceleration hooks - David S. Miller <davem@redhat.com>; 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Correct all the locking - David S. Miller <davem@redhat.com>; 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Use hash table for VLAN groups - David S. Miller <davem@redhat.com> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modify it under the terms of the GNU General Public License 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as published by the Free Software Foundation; either version 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 of the License, or (at your option) any later version. 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 214fc268d24ceb9f4150777c1b5b2b8e6214e56b2bRandy Dunlap#include <linux/capability.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/netdevice.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/skbuff.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 2682524746c27fa418c250a56dd7606b9d3fc79826Franck Bui-Huu#include <linux/rculist.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/p8022.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/arp.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/rtnetlink.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/notifier.h> 3161362766d769c934a9d12d5516323c544c161908Patrick McHardy#include <net/rtnetlink.h> 32e9dc86534051b78e41e5b746cccc291b57a3a311Eric W. Biederman#include <net/net_namespace.h> 33d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov#include <net/netns/generic.h> 3461362766d769c934a9d12d5516323c544c161908Patrick McHardy#include <asm/uaccess.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_vlan.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "vlan.h" 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "vlanproc.h" 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRV_VERSION "1.8" 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Global VLAN variables */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanovint vlan_net_id; 45d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Our listing of VLAN group(s) */ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct hlist_head vlan_group_hash[VLAN_GRP_HASH_SIZE]; 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 49b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerconst char vlan_fullname[] = "802.1Q VLAN Support"; 50b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerconst char vlan_version[] = DRV_VERSION; 51b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerstatic const char vlan_copyright[] = "Ben Greear <greearb@candelatech.com>"; 52b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerstatic const char vlan_buggyright[] = "David S. Miller <davem@redhat.com>"; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 547546dd97d27306d939c13e03318aae695badaa88Stephen Hemmingerstatic struct packet_type vlan_packet_type __read_mostly = { 5509640e6365c679b5642b1c41b6d7078f51689ddfHarvey Harrison .type = cpu_to_be16(ETH_P_8021Q), 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .func = vlan_skb_recv, /* VLAN receive method */ 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* End of global variables definitions. */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 612029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardystatic inline unsigned int vlan_grp_hashfn(unsigned int idx) 622029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy{ 632029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy return ((idx >> VLAN_GRP_HASH_SHIFT) ^ idx) & VLAN_GRP_HASH_MASK; 642029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy} 652029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Must be invoked with RCU read lock (no preempt) */ 67a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanovstatic struct vlan_group *__vlan_find_group(struct net_device *real_dev) 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_group *grp; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct hlist_node *n; 71a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov int hash = vlan_grp_hashfn(real_dev->ifindex); 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hlist_for_each_entry_rcu(grp, n, &vlan_group_hash[hash], hlist) { 74a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov if (grp->real_dev == real_dev) 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return grp; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Find the protocol handler. Assumes VID < VLAN_VID_MASK. 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Must be invoked with RCU read lock (no preempt) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 859bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardystruct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id) 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 87a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov struct vlan_group *grp = __vlan_find_group(real_dev); 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (grp) 909bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy return vlan_group_get_device(grp, vlan_id); 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 955c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Alonistatic void vlan_group_free(struct vlan_group *grp) 965c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni{ 975c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni int i; 985c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni 992029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy for (i = 0; i < VLAN_GROUP_ARRAY_SPLIT_PARTS; i++) 1005c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni kfree(grp->vlan_devices_arrays[i]); 1015c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni kfree(grp); 1025c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni} 1035c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni 104a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanovstatic struct vlan_group *vlan_group_alloc(struct net_device *real_dev) 10542429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy{ 10642429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy struct vlan_group *grp; 10742429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy 10842429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL); 10942429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy if (!grp) 11042429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy return NULL; 11142429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy 112a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov grp->real_dev = real_dev; 11342429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy hlist_add_head_rcu(&grp->hlist, 114a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov &vlan_group_hash[vlan_grp_hashfn(real_dev->ifindex)]); 11542429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy return grp; 11667727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov} 11742429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy 1189bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardystatic int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id) 11967727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov{ 12067727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov struct net_device **array; 12167727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov unsigned int size; 12267727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 12367727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov ASSERT_RTNL(); 12467727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 1259bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; 12667727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (array != NULL) 12767727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return 0; 12867727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 12967727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN; 13067727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov array = kzalloc(size, GFP_KERNEL); 13167727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (array == NULL) 13267727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return -ENOBUFS; 13367727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 1349bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN] = array; 13567727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return 0; 13642429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy} 13742429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void vlan_rcu_free(struct rcu_head *rcu) 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1405c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni vlan_group_free(container_of(rcu, struct vlan_group, rcu)); 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14323289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazetvoid unregister_vlan_dev(struct net_device *dev, struct list_head *head) 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1459dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 146af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy struct net_device *real_dev = vlan->real_dev; 147656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_group *grp; 1499bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy u16 vlan_id = vlan->vlan_id; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ASSERT_RTNL(); 152acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 153a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov grp = __vlan_find_group(real_dev); 154af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy BUG_ON(!grp); 155acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 156acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy /* Take it out of our own structures, but be sure to interlock with 157acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy * HW accelerating devices or SW vlan input packet processing. 158acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy */ 159acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_FILTER) 160656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id); 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 162af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy grp->nr_vlans--; 163acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 16429906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy vlan_group_set_device(grp, vlan_id, NULL); 16529906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy if (!grp->killall) 16663c8099d90096db56ee1c66c31f05d4fcfbc1c69Eric Dumazet synchronize_net(); 16729906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy 16823289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 169ce305002e1c9b90c2c151ce18bab0b895dd55ae6Patrick McHardy 170acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy /* If the group is now empty, kill off the group. */ 171af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy if (grp->nr_vlans == 0) { 17270c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit_applicant(real_dev); 17370c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 174acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_RX) 175656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger ops->ndo_vlan_rx_register(real_dev, NULL); 176acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 177acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy hlist_del_rcu(&grp->hlist); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 179acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy /* Free the group, after all cpu's are done. */ 180acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy call_rcu(&grp->rcu, vlan_rcu_free); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 183af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy /* Get rid of the vlan's reference to real_dev */ 184af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy dev_put(real_dev); 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1872029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardystatic void vlan_transfer_operstate(const struct net_device *dev, 1882029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy struct net_device *vlandev) 189ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf{ 190ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf /* Have to respect userspace enforced dormant state 191ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf * of real device, also must allow supplicant running 192ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf * on VLAN device 193ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf */ 194ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf if (dev->operstate == IF_OPER_DORMANT) 195ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf netif_dormant_on(vlandev); 196ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf else 197ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf netif_dormant_off(vlandev); 198ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf 199ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf if (netif_carrier_ok(dev)) { 200ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf if (!netif_carrier_ok(vlandev)) 201ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf netif_carrier_on(vlandev); 202ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf } else { 203ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf if (netif_carrier_ok(vlandev)) 204ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf netif_carrier_off(vlandev); 205ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf } 206ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf} 207ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf 2089bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardyint vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 210656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger const char *name = real_dev->name; 211656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 21240f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { 21440f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy pr_info("8021q: VLANs not supported on %s\n", name); 215c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EOPNOTSUPP; 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 218656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger if ((real_dev->features & NETIF_F_HW_VLAN_RX) && !ops->ndo_vlan_rx_register) { 21940f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy pr_info("8021q: device %s has buggy VLAN hw accel\n", name); 220c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EOPNOTSUPP; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) && 224656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger (!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) { 22540f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy pr_info("8021q: Device %s has buggy VLAN hw accel\n", name); 226c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EOPNOTSUPP; 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22940f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy if (__find_vlan_dev(real_dev, vlan_id) != NULL) 230c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EEXIST; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 232c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return 0; 233c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy} 234c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 23507b5b17e157b7018d0ca40ca0d1581a23096fb45Patrick McHardyint register_vlan_dev(struct net_device *dev) 236e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy{ 2379dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 238e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy struct net_device *real_dev = vlan->real_dev; 239656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 2409bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy u16 vlan_id = vlan->vlan_id; 241e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy struct vlan_group *grp, *ngrp = NULL; 242e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy int err; 243e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 244a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov grp = __vlan_find_group(real_dev); 245e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (!grp) { 246a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov ngrp = grp = vlan_group_alloc(real_dev); 247e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (!grp) 248e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy return -ENOBUFS; 24970c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy err = vlan_gvrp_init_applicant(real_dev); 25070c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy if (err < 0) 25170c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy goto out_free_group; 252e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy } 253e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 25467727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov err = vlan_group_prealloc_vid(grp, vlan_id); 25567727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (err < 0) 25670c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy goto out_uninit_applicant; 25767727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 258e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy err = register_netdevice(dev); 259e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (err < 0) 26070c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy goto out_uninit_applicant; 261e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 262e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy /* Account for reference in struct vlan_dev_info */ 263e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy dev_hold(real_dev); 264e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 265e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy vlan_transfer_operstate(real_dev, dev); 266e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */ 267e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 268e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy /* So, got the sucker initialized, now lets place 269e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy * it into our local structure. 270e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy */ 271e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy vlan_group_set_device(grp, vlan_id, dev); 272af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy grp->nr_vlans++; 273af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy 274e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (ngrp && real_dev->features & NETIF_F_HW_VLAN_RX) 275656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger ops->ndo_vlan_rx_register(real_dev, ngrp); 276e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_FILTER) 277656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger ops->ndo_vlan_rx_add_vid(real_dev, vlan_id); 278e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 279e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy return 0; 280e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 28170c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardyout_uninit_applicant: 28270c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy if (ngrp) 28370c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit_applicant(real_dev); 284e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardyout_free_group: 285e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (ngrp) 286e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy vlan_group_free(ngrp); 287e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy return err; 288e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy} 289e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 290c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy/* Attach a VLAN device to a mac address (ie Ethernet Card). 2912ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy * Returns 0 if the device was created or a negative error code otherwise. 292c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy */ 2939bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardystatic int register_vlan_device(struct net_device *real_dev, u16 vlan_id) 294c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy{ 295c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy struct net_device *new_dev; 2967a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct net *net = dev_net(real_dev); 2977a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct vlan_net *vn = net_generic(net, vlan_net_id); 298c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy char name[IFNAMSIZ]; 2992ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy int err; 300c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 3019bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy if (vlan_id >= VLAN_VID_MASK) 3022ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return -ERANGE; 303c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 3049bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy err = vlan_check_real_dev(real_dev, vlan_id); 3052ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy if (err < 0) 3062ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return err; 307c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Gotta set up the fields for the device. */ 3097a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov switch (vn->name_type) { 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_RAW_PLUS_VID: 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* name will look like: eth1.0005 */ 3129bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id); 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_PLUS_VID_NO_PAD: 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: vlan5 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3189bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "vlan%i", vlan_id); 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD: 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: eth0.5 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3249bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_PLUS_VID: 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: vlan0005 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3319bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id); 3323ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 333122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki 3342e59af3dcbdf11635c03f22bfc9706744465d589Eric Dumazet new_dev = alloc_netdev_mq(sizeof(struct vlan_dev_info), name, 3352e59af3dcbdf11635c03f22bfc9706744465d589Eric Dumazet vlan_setup, real_dev->num_tx_queues); 3365dd8d1e9eb8b51041505966fe96d081ecbe86efeArjan van de Ven 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_dev == NULL) 3382ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return -ENOBUFS; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3402e59af3dcbdf11635c03f22bfc9706744465d589Eric Dumazet new_dev->real_num_tx_queues = real_dev->real_num_tx_queues; 34165d292a2ef2df66fd1ab83447afee71ef3720dedPavel Emelyanov dev_net_set(new_dev, net); 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* need 4 bytes for extra VLAN header info, 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hope the underlying device can handle it. 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dev->mtu = real_dev->mtu; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3479bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy vlan_dev_info(new_dev)->vlan_id = vlan_id; 3489dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy vlan_dev_info(new_dev)->real_dev = real_dev; 3499dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy vlan_dev_info(new_dev)->dent = NULL; 3509dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy vlan_dev_info(new_dev)->flags = VLAN_FLAG_REORDER_HDR; 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35207b5b17e157b7018d0ca40ca0d1581a23096fb45Patrick McHardy new_dev->rtnl_link_ops = &vlan_link_ops; 3532ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy err = register_vlan_dev(new_dev); 3542ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy if (err < 0) 355e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy goto out_free_newdev; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3572ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return 0; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_free_newdev: 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(new_dev); 3612ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return err; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3648c979c26a0f093c13290320edda799d8335e50aePatrick McHardystatic void vlan_sync_address(struct net_device *dev, 3658c979c26a0f093c13290320edda799d8335e50aePatrick McHardy struct net_device *vlandev) 3668c979c26a0f093c13290320edda799d8335e50aePatrick McHardy{ 3679dfebcc6479c55c001e4bb5fe7cc16b6799c43a7Patrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(vlandev); 3688c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3698c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* May be called without an actual change */ 3708c979c26a0f093c13290320edda799d8335e50aePatrick McHardy if (!compare_ether_addr(vlan->real_dev_addr, dev->dev_addr)) 3718c979c26a0f093c13290320edda799d8335e50aePatrick McHardy return; 3728c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3738c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* vlan address was different from the old address and is equal to 3748c979c26a0f093c13290320edda799d8335e50aePatrick McHardy * the new address */ 3758c979c26a0f093c13290320edda799d8335e50aePatrick McHardy if (compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) && 3768c979c26a0f093c13290320edda799d8335e50aePatrick McHardy !compare_ether_addr(vlandev->dev_addr, dev->dev_addr)) 377ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(dev, vlandev->dev_addr); 3788c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3798c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* vlan address was equal to the old address and is different from 3808c979c26a0f093c13290320edda799d8335e50aePatrick McHardy * the new address */ 3818c979c26a0f093c13290320edda799d8335e50aePatrick McHardy if (!compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) && 3828c979c26a0f093c13290320edda799d8335e50aePatrick McHardy compare_ether_addr(vlandev->dev_addr, dev->dev_addr)) 383ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_add(dev, vlandev->dev_addr); 3848c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3858c979c26a0f093c13290320edda799d8335e50aePatrick McHardy memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN); 3868c979c26a0f093c13290320edda799d8335e50aePatrick McHardy} 3878c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3885fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardystatic void vlan_transfer_features(struct net_device *dev, 3895fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy struct net_device *vlandev) 3905fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy{ 3915fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy unsigned long old_features = vlandev->features; 3925fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 393289c79a4bd350e8a25065102563ad1a183d1b402Patrick McHardy vlandev->features &= ~dev->vlan_features; 394289c79a4bd350e8a25065102563ad1a183d1b402Patrick McHardy vlandev->features |= dev->features & dev->vlan_features; 3951ae4be22f64326a6784acd7083b9590c9f4215a2Alexander Duyck vlandev->gso_max_size = dev->gso_max_size; 396b85daa5324a3c9e560a4351c17d18f49c647eb5cVasu Dev#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 397b85daa5324a3c9e560a4351c17d18f49c647eb5cVasu Dev vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid; 398b85daa5324a3c9e560a4351c17d18f49c647eb5cVasu Dev#endif 3995fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 4005fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy if (old_features != vlandev->features) 4015fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy netdev_features_change(vlandev); 4025fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy} 4035fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 404802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanovstatic void __vlan_device_event(struct net_device *dev, unsigned long event) 405802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov{ 406802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov switch (event) { 407802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov case NETDEV_CHANGENAME: 408802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov vlan_proc_rem_dev(dev); 409802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov if (vlan_proc_add_dev(dev) < 0) 410802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov pr_warning("8021q: failed to change proc name for %s\n", 411802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov dev->name); 412802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov break; 41330688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov case NETDEV_REGISTER: 41430688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov if (vlan_proc_add_dev(dev) < 0) 41530688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov pr_warning("8021q: failed to add proc entry for %s\n", 41630688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov dev->name); 41730688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov break; 41830688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov case NETDEV_UNREGISTER: 41930688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov vlan_proc_rem_dev(dev); 42030688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov break; 421802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov } 422802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov} 423802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov 4242029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardystatic int vlan_device_event(struct notifier_block *unused, unsigned long event, 4252029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy void *ptr) 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev = ptr; 428802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov struct vlan_group *grp; 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, flgs; 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *vlandev; 43129906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy LIST_HEAD(list); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43381d85346b3fcd8b3167eac8b5fb415a210bd4345Patrick McHardy if (is_vlan_dev(dev)) 434802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov __vlan_device_event(dev, event); 435802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov 436a9fde2607895667823e9d1172fc193087125ef68Pavel Emelyanov grp = __vlan_find_group(dev); 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!grp) 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It is OK that we do not hold the group lock right now, 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as we run under the RTNL lock. 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (event) { 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_CHANGE: 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Propagate real device state to vlan devices */ 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 4485c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni vlandev = vlan_group_get_device(grp, i); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!vlandev) 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 452ddd7bf9fe4e59afc0a041378f82b6e1aa88f714bStefan Rompf vlan_transfer_operstate(dev, vlandev); 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4568c979c26a0f093c13290320edda799d8335e50aePatrick McHardy case NETDEV_CHANGEADDR: 4578c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* Adjust unicast filters on underlying device */ 4588c979c26a0f093c13290320edda799d8335e50aePatrick McHardy for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 4598c979c26a0f093c13290320edda799d8335e50aePatrick McHardy vlandev = vlan_group_get_device(grp, i); 4608c979c26a0f093c13290320edda799d8335e50aePatrick McHardy if (!vlandev) 4618c979c26a0f093c13290320edda799d8335e50aePatrick McHardy continue; 4628c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 463d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy flgs = vlandev->flags; 464d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy if (!(flgs & IFF_UP)) 465d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy continue; 466d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy 4678c979c26a0f093c13290320edda799d8335e50aePatrick McHardy vlan_sync_address(dev, vlandev); 4688c979c26a0f093c13290320edda799d8335e50aePatrick McHardy } 4692e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu break; 4702e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu 4712e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu case NETDEV_CHANGEMTU: 4722e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 4732e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu vlandev = vlan_group_get_device(grp, i); 4742e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu if (!vlandev) 4752e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu continue; 4762e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu 4772e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu if (vlandev->mtu <= dev->mtu) 4782e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu continue; 4792e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu 4802e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu dev_set_mtu(vlandev, dev->mtu); 4812e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu } 4828c979c26a0f093c13290320edda799d8335e50aePatrick McHardy break; 4838c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 4845fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy case NETDEV_FEAT_CHANGE: 4855fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy /* Propagate device features to underlying device */ 4865fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 4875fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy vlandev = vlan_group_get_device(grp, i); 4885fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy if (!vlandev) 4895fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy continue; 4905fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 4915fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy vlan_transfer_features(dev, vlandev); 4925fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy } 4935fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 4945fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy break; 4955fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_DOWN: 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put all VLANs for this dev in the down state too. */ 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 4995c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni vlandev = vlan_group_get_device(grp, i); 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!vlandev) 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flgs = vlandev->flags; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(flgs & IFF_UP)) 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_change_flags(vlandev, flgs & ~IFF_UP); 508adc667e84f086aa110d810f3476c494e48eaabaaJay Vosburgh vlan_transfer_operstate(dev, vlandev); 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_UP: 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put all VLANs for this dev in the up state too. */ 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 5155c15bdec5c38f4ccf73ef2585fc80a6164de9554Dan Aloni vlandev = vlan_group_get_device(grp, i); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!vlandev) 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 518122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flgs = vlandev->flags; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flgs & IFF_UP) 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_change_flags(vlandev, flgs | IFF_UP); 524adc667e84f086aa110d810f3476c494e48eaabaaJay Vosburgh vlan_transfer_operstate(dev, vlandev); 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 527122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_UNREGISTER: 52929906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy /* Delete all VLANs for this dev. */ 53029906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy grp->killall = 1; 53129906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy 53229906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { 53329906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy vlandev = vlan_group_get_device(grp, i); 53429906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy if (!vlandev) 53529906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy continue; 53629906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy 53729906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy /* unregistration of last vlan destroys group, abort 53829906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy * afterwards */ 53929906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy if (grp->nr_vlans == 1) 54029906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy i = VLAN_GROUP_ARRAY_LEN; 54129906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy 54229906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy unregister_vlan_dev(vlandev, &list); 54329906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy } 54429906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy unregister_netdevice_many(&list); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5463ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NOTIFY_DONE; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic struct notifier_block vlan_notifier_block __read_mostly = { 55369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy .notifier_call = vlan_device_event, 55469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy}; 55569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * VLAN IOCTL handler. 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * o execute requested action or pass command to the device driver 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * arg is really a struct vlan_ioctl_args __user *. 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 561881d966b48b035ab3f3aeaae0f3d3f9b584f45b2Eric W. Biedermanstatic int vlan_ioctl_handler(struct net *net, void __user *arg) 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 563c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy int err; 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_ioctl_args args; 565c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy struct net_device *dev = NULL; 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args))) 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Null terminate this sucker, just in case. */ 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.device1[23] = 0; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.u.device2[23] = 0; 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 574c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy rtnl_lock(); 575c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (args.cmd) { 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_INGRESS_PRIORITY_CMD: 578c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_EGRESS_PRIORITY_CMD: 579c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_FLAG_CMD: 580c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case ADD_VLAN_CMD: 581c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case DEL_VLAN_CMD: 582c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case GET_VLAN_REALDEV_NAME_CMD: 583c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case GET_VLAN_VID_CMD: 584c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -ENODEV; 58565d292a2ef2df66fd1ab83447afee71ef3720dedPavel Emelyanov dev = __dev_get_by_name(net, args.device1); 586c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy if (!dev) 587c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy goto out; 588c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 589c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EINVAL; 59026a25239d7a660cc7162e2463b48b40d544364d0Joonwoo Park if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev)) 591c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy goto out; 592c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy } 593c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 594c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy switch (args.cmd) { 595c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_INGRESS_PRIORITY_CMD: 596c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 598c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 599c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy vlan_dev_set_ingress_priority(dev, 600c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy args.u.skb_priority, 601c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy args.vlan_qos); 602fffe470a803e7f7b74c016291e542a0162761209Patrick McHardy err = 0; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_EGRESS_PRIORITY_CMD: 606c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 608c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 609c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = vlan_dev_set_egress_priority(dev, 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.u.skb_priority, 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.vlan_qos); 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_FLAG_CMD: 615c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 617c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 618b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy err = vlan_dev_change_flags(dev, 619b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy args.vlan_qos ? args.u.flag : 0, 620b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy args.u.flag); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_NAME_TYPE_CMD: 624c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 626e35de02615f97b785dc6f73cba421cea06bcbd10Pavel Emelyanov break; 627c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy if ((args.u.name_type >= 0) && 628c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) { 6297a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct vlan_net *vn; 6307a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov 6317a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn = net_generic(net, vlan_net_id); 6327a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn->name_type = args.u.name_type; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = 0; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ADD_VLAN_CMD: 640c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 642c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 6432ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy err = register_vlan_device(dev, args.u.VID); 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DEL_VLAN_CMD: 647c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!capable(CAP_NET_ADMIN)) 649c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 65023289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_vlan_dev(dev, NULL); 651af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy err = 0; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GET_VLAN_REALDEV_NAME_CMD: 6553f5f4346b6d3c8bc33780a941da2473c4be2c989Andrew Morton err = 0; 656c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy vlan_dev_get_realdev_name(dev, args.u.device2); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(arg, &args, 6582029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy sizeof(struct vlan_ioctl_args))) 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GET_VLAN_VID_CMD: 6633f5f4346b6d3c8bc33780a941da2473c4be2c989Andrew Morton err = 0; 66422d1ba74bbafa96d3f425cc12714d3fe8675183fPatrick McHardy args.u.VID = vlan_dev_vlan_id(dev); 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(arg, &args, 6662029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy sizeof(struct vlan_ioctl_args))) 667122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki err = -EFAULT; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 671198a291ce3a9103f4738600e3cf5416b66e009d9Patrick McHardy err = -EOPNOTSUPP; 672c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 6733ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 6747eb1b3d372a53fe9220b9e3b579886db0fe2f897Mika Kukkonenout: 675c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy rtnl_unlock(); 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 679d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanovstatic int vlan_init_net(struct net *net) 680d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov{ 681d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov int err; 682d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov struct vlan_net *vn; 683d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 684d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov err = -ENOMEM; 685d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov vn = kzalloc(sizeof(struct vlan_net), GFP_KERNEL); 686d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov if (vn == NULL) 687d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov goto err_alloc; 688d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 689d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov err = net_assign_generic(net, vlan_net_id, vn); 690d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov if (err < 0) 691d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov goto err_assign; 692d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 6937a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD; 6947a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov 695cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov err = vlan_proc_init(net); 696cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov if (err < 0) 697cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov goto err_proc; 698cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov 699d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov return 0; 700d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 701cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanoverr_proc: 702cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov /* nothing */ 703d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanoverr_assign: 704d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov kfree(vn); 705d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanoverr_alloc: 706d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov return err; 707d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov} 708d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 709d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanovstatic void vlan_exit_net(struct net *net) 710d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov{ 711d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov struct vlan_net *vn; 712d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 713d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov vn = net_generic(net, vlan_net_id); 71465d292a2ef2df66fd1ab83447afee71ef3720dedPavel Emelyanov rtnl_kill_links(net, &vlan_link_ops); 715cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov vlan_proc_cleanup(net); 716d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov kfree(vn); 717d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov} 718d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 719d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanovstatic struct pernet_operations vlan_net_ops = { 720d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov .init = vlan_init_net, 721d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov .exit = vlan_exit_net, 722d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov}; 723d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 72469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic int __init vlan_proto_init(void) 72569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy{ 72669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy int err; 72769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 72869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright); 72969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy pr_info("All bugs added by %s\n", vlan_buggyright); 73069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 731d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov err = register_pernet_gen_device(&vlan_net_id, &vlan_net_ops); 732d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov if (err < 0) 733d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov goto err0; 734d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 73569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy err = register_netdevice_notifier(&vlan_notifier_block); 73669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy if (err < 0) 73769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy goto err2; 73869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 73970c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy err = vlan_gvrp_init(); 74069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy if (err < 0) 74169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy goto err3; 74269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 74370c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy err = vlan_netlink_init(); 74470c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy if (err < 0) 74570c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy goto err4; 74670c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 74769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy dev_add_pack(&vlan_packet_type); 74869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_ioctl_set(vlan_ioctl_handler); 74969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy return 0; 75069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 75170c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardyerr4: 75270c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit(); 75369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardyerr3: 75469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy unregister_netdevice_notifier(&vlan_notifier_block); 75569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardyerr2: 756d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops); 757d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanoverr0: 75869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy return err; 75969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy} 76069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 76169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic void __exit vlan_cleanup_module(void) 76269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy{ 76369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy unsigned int i; 76469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 76569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_ioctl_set(NULL); 76669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_netlink_fini(); 76769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 76869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy unregister_netdevice_notifier(&vlan_notifier_block); 76969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 77069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy dev_remove_pack(&vlan_packet_type); 77169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 77269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy /* This table must be empty if there are no module references left. */ 77369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy for (i = 0; i < VLAN_GRP_HASH_SIZE; i++) 77469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy BUG_ON(!hlist_empty(&vlan_group_hash[i])); 77569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 776d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops); 7776e327c11a91d190650df9aabe7d3694d4838bfa1Jesper Dangaard Brouer rcu_barrier(); /* Wait for completion of call_rcu()'s */ 77870c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 77970c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit(); 78069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy} 78169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 78269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardymodule_init(vlan_proto_init); 78369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardymodule_exit(vlan_cleanup_module); 78469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_VERSION(DRV_VERSION); 787