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 21afab2d2999e9c12cf319e1f19da9a0a754560d80Joe Perches#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 22afab2d2999e9c12cf319e1f19da9a0a754560d80Joe Perches 234fc268d24ceb9f4150777c1b5b2b8e6214e56b2bRandy Dunlap#include <linux/capability.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/netdevice.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/skbuff.h> 275a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 2982524746c27fa418c250a56dd7606b9d3fc79826Franck Bui-Huu#include <linux/rculist.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/p8022.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/arp.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/rtnetlink.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/notifier.h> 3461362766d769c934a9d12d5516323c544c161908Patrick McHardy#include <net/rtnetlink.h> 35e9dc86534051b78e41e5b746cccc291b57a3a311Eric W. Biederman#include <net/net_namespace.h> 36d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov#include <net/netns/generic.h> 3761362766d769c934a9d12d5516323c544c161908Patrick McHardy#include <asm/uaccess.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_vlan.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "vlan.h" 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "vlanproc.h" 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRV_VERSION "1.8" 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Global VLAN variables */ 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 47f99189b186f3922ede4fa33c02f6edc735b8c981Eric Dumazetint vlan_net_id __read_mostly; 48d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 49b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerconst char vlan_fullname[] = "802.1Q VLAN Support"; 50b30200616f97a81243e6d0c644d8ab06bf0b8115Stephen Hemmingerconst char vlan_version[] = DRV_VERSION; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* End of global variables definitions. */ 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardystatic int vlan_group_prealloc_vid(struct vlan_group *vg, 551fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy __be16 vlan_proto, u16 vlan_id) 5667727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov{ 5767727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov struct net_device **array; 581fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy unsigned int pidx, vidx; 5967727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov unsigned int size; 6067727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 6167727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov ASSERT_RTNL(); 6267727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 631fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy pidx = vlan_proto_idx(vlan_proto); 641fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN; 651fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy array = vg->vlan_devices_arrays[pidx][vidx]; 6667727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (array != NULL) 6767727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return 0; 6867727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 6967727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN; 7067727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov array = kzalloc(size, GFP_KERNEL); 7167727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (array == NULL) 7267727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return -ENOBUFS; 7367727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 741fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vg->vlan_devices_arrays[pidx][vidx] = array; 7567727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov return 0; 7642429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy} 7742429aaee5eb44f4a48fdb056d77d0c06ef5aebcPatrick McHardy 7823289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazetvoid unregister_vlan_dev(struct net_device *dev, struct list_head *head) 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 807da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 81af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy struct net_device *real_dev = vlan->real_dev; 825b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko struct vlan_info *vlan_info; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_group *grp; 849bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy u16 vlan_id = vlan->vlan_id; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ASSERT_RTNL(); 87acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 885b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko vlan_info = rtnl_dereference(real_dev->vlan_info); 895b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko BUG_ON(!vlan_info); 905b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko 915b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko grp = &vlan_info->grp; 92acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 935b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko grp->nr_vlan_devs--; 94acc5efbcd2a023c8801f2bba39971cf93812ce7cPatrick McHardy 9586fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 9686fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward vlan_mvrp_request_leave(dev); 9755aee10dec477254241e4f72968f92e0543b33adEric Dumazet if (vlan->flags & VLAN_FLAG_GVRP) 9855aee10dec477254241e4f72968f92e0543b33adEric Dumazet vlan_gvrp_request_leave(dev); 9955aee10dec477254241e4f72968f92e0543b33adEric Dumazet 1001fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL); 10147701a36a3ed6d97e5bbe7ad72cceb49ca329d00Veaceslav Falico 10247701a36a3ed6d97e5bbe7ad72cceb49ca329d00Veaceslav Falico netdev_upper_dev_unlink(real_dev, dev); 10348752e1b1802231ef2a076f34d861918b7d571c3Eric Dumazet /* Because unregister_netdevice_queue() makes sure at least one rcu 10448752e1b1802231ef2a076f34d861918b7d571c3Eric Dumazet * grace period is respected before device freeing, 10548752e1b1802231ef2a076f34d861918b7d571c3Eric Dumazet * we dont need to call synchronize_net() here. 10648752e1b1802231ef2a076f34d861918b7d571c3Eric Dumazet */ 10723289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 108ce305002e1c9b90c2c151ce18bab0b895dd55ae6Patrick McHardy 10986fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward if (grp->nr_vlan_devs == 0) { 11086fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward vlan_mvrp_uninit_applicant(real_dev); 11170c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit_applicant(real_dev); 11286fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward } 11370c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 1144a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang /* Take it out of our own structures, but be sure to interlock with 1154a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang * HW accelerating devices or SW vlan input packet processing if 1164a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang * VLAN is not 0 (leave it there for 802.1p). 1174a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang */ 1184a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang if (vlan_id) 1191fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id); 1204a7df340ed1bac190c124c1601bfc10cde9fb4fbCong Wang 121af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy /* Get rid of the vlan's reference to real_dev */ 122af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy dev_put(real_dev); 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1251fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardyint vlan_check_real_dev(struct net_device *real_dev, 1261fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy __be16 protocol, u16 vlan_id) 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 128656299f706e52e0409733d704c2761f1b12d6954Stephen Hemminger const char *name = real_dev->name; 12940f98e1af4c6082f7f98391540a2a1ade030480aPatrick McHardy 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { 131afab2d2999e9c12cf319e1f19da9a0a754560d80Joe Perches pr_info("VLANs not supported on %s\n", name); 132c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EOPNOTSUPP; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) 136c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return -EEXIST; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 138c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy return 0; 139c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy} 140c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 14107b5b17e157b7018d0ca40ca0d1581a23096fb45Patrick McHardyint register_vlan_dev(struct net_device *dev) 142e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy{ 1437da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 144e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy struct net_device *real_dev = vlan->real_dev; 1459bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy u16 vlan_id = vlan->vlan_id; 1465b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko struct vlan_info *vlan_info; 1475b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko struct vlan_group *grp; 148e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy int err; 149e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 1501fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id); 1515b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko if (err) 1525b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko return err; 1535b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko 1545b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko vlan_info = rtnl_dereference(real_dev->vlan_info); 1555b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko /* vlan_info should be there now. vlan_vid_add took care of it */ 1565b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko BUG_ON(!vlan_info); 1575b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko 1585b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko grp = &vlan_info->grp; 1595b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko if (grp->nr_vlan_devs == 0) { 16070c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy err = vlan_gvrp_init_applicant(real_dev); 16170c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy if (err < 0) 1625b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko goto out_vid_del; 16386fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward err = vlan_mvrp_init_applicant(real_dev); 16486fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward if (err < 0) 16586fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward goto out_uninit_gvrp; 166e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy } 167e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 1681fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id); 16967727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov if (err < 0) 17086fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward goto out_uninit_mvrp; 17167727184f28c38d06013c6659560bb046c1d9f9cPavel Emelyanov 172d38569ab2bba6e6b3233acfc3a84cdbcfbd1f79fVlad Yasevich vlan->nest_level = dev_get_nest_level(real_dev, is_vlan_dev) + 1; 173e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy err = register_netdevice(dev); 174e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy if (err < 0) 1755df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico goto out_uninit_mvrp; 1765df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico 1775df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico err = netdev_upper_dev_link(real_dev, dev); 1785df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico if (err) 1795df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico goto out_unregister_netdev; 180e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 1817da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko /* Account for reference in struct vlan_dev_priv */ 182e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy dev_hold(real_dev); 183e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 184fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(real_dev, dev); 185e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */ 186e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 187e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy /* So, got the sucker initialized, now lets place 188e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy * it into our local structure. 189e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy */ 1901fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev); 1915b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko grp->nr_vlan_devs++; 192e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 193e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy return 0; 194e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 1955df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falicoout_unregister_netdev: 1965df27e6cb2d302e90366848bc3c2bb73c41287fbVeaceslav Falico unregister_netdevice(dev); 19786fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Wardout_uninit_mvrp: 19886fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward if (grp->nr_vlan_devs == 0) 19986fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward vlan_mvrp_uninit_applicant(real_dev); 20086fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Wardout_uninit_gvrp: 2015b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko if (grp->nr_vlan_devs == 0) 20270c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit_applicant(real_dev); 2035b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirkoout_vid_del: 2041fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id); 205e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy return err; 206e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy} 207e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy 208c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy/* Attach a VLAN device to a mac address (ie Ethernet Card). 2092ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy * Returns 0 if the device was created or a negative error code otherwise. 210c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy */ 2119bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardystatic int register_vlan_device(struct net_device *real_dev, u16 vlan_id) 212c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy{ 213c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy struct net_device *new_dev; 2140c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui struct vlan_dev_priv *vlan; 2157a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct net *net = dev_net(real_dev); 2167a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct vlan_net *vn = net_generic(net, vlan_net_id); 217c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy char name[IFNAMSIZ]; 2182ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy int err; 219c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 2209bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy if (vlan_id >= VLAN_VID_MASK) 2212ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return -ERANGE; 222c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 2231fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id); 2242ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy if (err < 0) 2252ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return err; 226c1d3ee9925ca714a5ed3f8fce01a7027137f4e3fPatrick McHardy 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Gotta set up the fields for the device. */ 2287a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov switch (vn->name_type) { 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_RAW_PLUS_VID: 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* name will look like: eth1.0005 */ 2319bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id); 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_PLUS_VID_NO_PAD: 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: vlan5 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2379bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "vlan%i", vlan_id); 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD: 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: eth0.5 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2439bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id); 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case VLAN_NAME_TYPE_PLUS_VID: 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put our vlan.VID in the name. 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Name will look like: vlan0005 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2509bb8582efb555521c7eec595ebd34e835ddc34b8Patrick McHardy snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id); 2513ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 252122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki 253c835a677331495cf137a7f8a023463afd9f032f8Tom Gundersen new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name, 254c835a677331495cf137a7f8a023463afd9f032f8Tom Gundersen NET_NAME_UNKNOWN, vlan_setup); 2555dd8d1e9eb8b51041505966fe96d081ecbe86efeArjan van de Ven 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_dev == NULL) 2572ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return -ENOBUFS; 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25965d292a2ef2df66fd1ab83447afee71ef3720dedPavel Emelyanov dev_net_set(new_dev, net); 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* need 4 bytes for extra VLAN header info, 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hope the underlying device can handle it. 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dev->mtu = real_dev->mtu; 2646e22ce2c6e4315522526279365d6e86e8f67a5faYi Zou new_dev->priv_flags |= (real_dev->priv_flags & IFF_UNICAST_FLT); 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2660c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan = vlan_dev_priv(new_dev); 2670c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan->vlan_proto = htons(ETH_P_8021Q); 2680c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan->vlan_id = vlan_id; 2690c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan->real_dev = real_dev; 2700c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan->dent = NULL; 2710c0667a8548ef2985038a5a1d0fa0f64e2774694Wang Sheng-Hui vlan->flags = VLAN_FLAG_REORDER_HDR; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27307b5b17e157b7018d0ca40ca0d1581a23096fb45Patrick McHardy new_dev->rtnl_link_ops = &vlan_link_ops; 2742ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy err = register_vlan_dev(new_dev); 2752ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy if (err < 0) 276e89fe42cd03c8fd3686df82d8390a235717a66dePatrick McHardy goto out_free_newdev; 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2782ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return 0; 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_free_newdev: 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(new_dev); 2822ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy return err; 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2858c979c26a0f093c13290320edda799d8335e50aePatrick McHardystatic void vlan_sync_address(struct net_device *dev, 2868c979c26a0f093c13290320edda799d8335e50aePatrick McHardy struct net_device *vlandev) 2878c979c26a0f093c13290320edda799d8335e50aePatrick McHardy{ 2887da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev); 2898c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 2908c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* May be called without an actual change */ 29153a2b3a18d7ec8fc026bbcb59ed722f780b5abccJoe Perches if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr)) 2928c979c26a0f093c13290320edda799d8335e50aePatrick McHardy return; 2938c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 2948c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* vlan address was different from the old address and is equal to 2958c979c26a0f093c13290320edda799d8335e50aePatrick McHardy * the new address */ 29653a2b3a18d7ec8fc026bbcb59ed722f780b5abccJoe Perches if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) && 29753a2b3a18d7ec8fc026bbcb59ed722f780b5abccJoe Perches ether_addr_equal(vlandev->dev_addr, dev->dev_addr)) 298a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(dev, vlandev->dev_addr); 2998c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3008c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* vlan address was equal to the old address and is different from 3018c979c26a0f093c13290320edda799d8335e50aePatrick McHardy * the new address */ 30253a2b3a18d7ec8fc026bbcb59ed722f780b5abccJoe Perches if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) && 30353a2b3a18d7ec8fc026bbcb59ed722f780b5abccJoe Perches !ether_addr_equal(vlandev->dev_addr, dev->dev_addr)) 304a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_add(dev, vlandev->dev_addr); 3058c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 30607fc67befd2e843da8ad01785d559d9c257d7fd4Joe Perches ether_addr_copy(vlan->real_dev_addr, dev->dev_addr); 3078c979c26a0f093c13290320edda799d8335e50aePatrick McHardy} 3088c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 3095fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardystatic void vlan_transfer_features(struct net_device *dev, 3105fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy struct net_device *vlandev) 3115fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy{ 312fc0d48b8fb449ca007b2057328abf736cb516168Vlad Yasevich struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev); 313fc0d48b8fb449ca007b2057328abf736cb516168Vlad Yasevich 3141ae4be22f64326a6784acd7083b9590c9f4215a2Alexander Duyck vlandev->gso_max_size = dev->gso_max_size; 315029f5fc31cdb35d6c8a7fe9a54bf21556e175988John Fastabend 316fc0d48b8fb449ca007b2057328abf736cb516168Vlad Yasevich if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto)) 317029f5fc31cdb35d6c8a7fe9a54bf21556e175988John Fastabend vlandev->hard_header_len = dev->hard_header_len; 318029f5fc31cdb35d6c8a7fe9a54bf21556e175988John Fastabend else 319029f5fc31cdb35d6c8a7fe9a54bf21556e175988John Fastabend vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN; 320029f5fc31cdb35d6c8a7fe9a54bf21556e175988John Fastabend 321f4d5392e5ff58bf706c47906b54cc4b7333fc22eAmerigo Wang#if IS_ENABLED(CONFIG_FCOE) 322b85daa5324a3c9e560a4351c17d18f49c647eb5cVasu Dev vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid; 323b85daa5324a3c9e560a4351c17d18f49c647eb5cVasu Dev#endif 3248a0427bb688eae86a8bb939b6a74e5aa00aa035aMichał Mirosław 3258a0427bb688eae86a8bb939b6a74e5aa00aa035aMichał Mirosław netdev_update_features(vlandev); 3265fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy} 3275fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 3289c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Congstatic int __vlan_device_event(struct net_device *dev, unsigned long event) 329802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov{ 3309c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong int err = 0; 3319c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong 332802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov switch (event) { 333802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov case NETDEV_CHANGENAME: 334802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov vlan_proc_rem_dev(dev); 3359c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong err = vlan_proc_add_dev(dev); 336802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov break; 33730688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov case NETDEV_REGISTER: 3389c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong err = vlan_proc_add_dev(dev); 33930688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov break; 34030688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov case NETDEV_UNREGISTER: 34130688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov vlan_proc_rem_dev(dev); 34230688a9a3e06d83d187658bd1c15f0e306bed38bPavel Emelyanov break; 343802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov } 3449c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong 3459c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong return err; 346802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov} 347802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov 3482029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardystatic int vlan_device_event(struct notifier_block *unused, unsigned long event, 3492029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy void *ptr) 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 351351638e7deeed2ec8ce451b53d33921b3da68f83Jiri Pirko struct net_device *dev = netdev_notifier_info_to_dev(ptr); 352802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov struct vlan_group *grp; 3535b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko struct vlan_info *vlan_info; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, flgs; 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *vlandev; 3567da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko struct vlan_dev_priv *vlan; 3571fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy bool last = false; 35829906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy LIST_HEAD(list); 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3609c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong if (is_vlan_dev(dev)) { 3619c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong int err = __vlan_device_event(dev, event); 3629c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong 3639c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong if (err) 3649c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong return notifier_from_errno(err); 3659c5ff24f963919965155cf0c4a2323b22a0c5c84WANG Cong } 366802fb176d8c635ae42da31b80841c26e8c7338a0Pavel Emelyanov 367ad1afb00393915a51c21b1ae8704562bf036855fPedro Garcia if ((event == NETDEV_UP) && 368f646968f8f7c624587de729115d802372b9063ddPatrick McHardy (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) { 369afab2d2999e9c12cf319e1f19da9a0a754560d80Joe Perches pr_info("adding VLAN 0 to HW filter on device %s\n", 370ad1afb00393915a51c21b1ae8704562bf036855fPedro Garcia dev->name); 37180d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_add(dev, htons(ETH_P_8021Q), 0); 372ad1afb00393915a51c21b1ae8704562bf036855fPedro Garcia } 373ad1afb00393915a51c21b1ae8704562bf036855fPedro Garcia 3745b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko vlan_info = rtnl_dereference(dev->vlan_info); 3755b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko if (!vlan_info) 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3775b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko grp = &vlan_info->grp; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It is OK that we do not hold the group lock right now, 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as we run under the RTNL lock. 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (event) { 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_CHANGE: 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Propagate real device state to vlan devices */ 3861fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) 387fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(dev, vlandev); 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3908c979c26a0f093c13290320edda799d8335e50aePatrick McHardy case NETDEV_CHANGEADDR: 3918c979c26a0f093c13290320edda799d8335e50aePatrick McHardy /* Adjust unicast filters on underlying device */ 3921fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) { 393d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy flgs = vlandev->flags; 394d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy if (!(flgs & IFF_UP)) 395d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy continue; 396d932e04a5e7b146c5f9bf517714b986a432a7594Patrick McHardy 3978c979c26a0f093c13290320edda799d8335e50aePatrick McHardy vlan_sync_address(dev, vlandev); 3988c979c26a0f093c13290320edda799d8335e50aePatrick McHardy } 3992e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu break; 4002e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu 4012e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu case NETDEV_CHANGEMTU: 4021fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) { 4032e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu if (vlandev->mtu <= dev->mtu) 4042e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu continue; 4052e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu 4062e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu dev_set_mtu(vlandev, dev->mtu); 4072e477c9bd2bb6a1606e498adb53ba913378ecdf2Herbert Xu } 4088c979c26a0f093c13290320edda799d8335e50aePatrick McHardy break; 4098c979c26a0f093c13290320edda799d8335e50aePatrick McHardy 4105fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy case NETDEV_FEAT_CHANGE: 4115fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy /* Propagate device features to underlying device */ 4121fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) 4135fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy vlan_transfer_features(dev, vlandev); 4145fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy break; 4155fb13570543f4ae022996c9d7c0c099c8abf22ddPatrick McHardy 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_DOWN: 417f646968f8f7c624587de729115d802372b9063ddPatrick McHardy if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER) 41880d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_del(dev, htons(ETH_P_8021Q), 0); 419efc73f4bbc238d4f579fb612c04c8e1dd8a82979Amir Hanania 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put all VLANs for this dev in the down state too. */ 4211fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) { 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flgs = vlandev->flags; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(flgs & IFF_UP)) 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4267da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko vlan = vlan_dev_priv(vlandev); 4275e7565930524410f097f5b04f8aba663089a6ffcPatrick McHardy if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 4285e7565930524410f097f5b04f8aba663089a6ffcPatrick McHardy dev_change_flags(vlandev, flgs & ~IFF_UP); 429fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(dev, vlandev); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_UP: 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Put all VLANs for this dev in the up state too. */ 4351fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) { 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flgs = vlandev->flags; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flgs & IFF_UP) 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4407da82c06ded105bf601bfa0eafc92e84eb0ceeedJiri Pirko vlan = vlan_dev_priv(vlandev); 4415e7565930524410f097f5b04f8aba663089a6ffcPatrick McHardy if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 4425e7565930524410f097f5b04f8aba663089a6ffcPatrick McHardy dev_change_flags(vlandev, flgs | IFF_UP); 443fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(dev, vlandev); 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 446122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case NETDEV_UNREGISTER: 4483b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 4493b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 4503b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 4513b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 4521fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) { 4535b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko /* removal of last vid destroys vlan_info, abort 45429906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy * afterwards */ 4555b9ea6e022e9ba0fe39cb349ac40361f78d5da5bJiri Pirko if (vlan_info->nr_vids == 1) 4561fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy last = true; 45729906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy 45829906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy unregister_vlan_dev(vlandev, &list); 4591fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy if (last) 4601fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy break; 46129906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy } 46229906f6a427d2004a515ebbcdc7b28bae8f6c19cPatrick McHardy unregister_netdevice_many(&list); 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4641c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko 4651c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 4661c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 46718c22a03a2187bcbda7d3a7fa1061584a6348e7bJiri Pirko if (vlan_uses_dev(dev)) 46818c22a03a2187bcbda7d3a7fa1061584a6348e7bJiri Pirko return NOTIFY_BAD; 46918c22a03a2187bcbda7d3a7fa1061584a6348e7bJiri Pirko break; 47099606477a5888b0ead0284fecb13417b1da8e3afBen Hutchings 47199606477a5888b0ead0284fecb13417b1da8e3afBen Hutchings case NETDEV_NOTIFY_PEERS: 4727c89943236750537d26421d9bbb6f6575e2d1e1bBen Hutchings case NETDEV_BONDING_FAILOVER: 4734aa5dee4d9997879adff858514844efab5a15a01Jiri Pirko case NETDEV_RESEND_IGMP: 47499606477a5888b0ead0284fecb13417b1da8e3afBen Hutchings /* Propagate to vlan devices */ 4751fd9b1fc310314911f66d2f14a8e4f0ef37bf47bPatrick McHardy vlan_group_for_each_dev(grp, i, vlandev) 4767c89943236750537d26421d9bbb6f6575e2d1e1bBen Hutchings call_netdevice_notifiers(event, vlandev); 47799606477a5888b0ead0284fecb13417b1da8e3afBen Hutchings break; 4783ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NOTIFY_DONE; 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic struct notifier_block vlan_notifier_block __read_mostly = { 48569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy .notifier_call = vlan_device_event, 48669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy}; 48769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * VLAN IOCTL handler. 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * o execute requested action or pass command to the device driver 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * arg is really a struct vlan_ioctl_args __user *. 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 493881d966b48b035ab3f3aeaae0f3d3f9b584f45b2Eric W. Biedermanstatic int vlan_ioctl_handler(struct net *net, void __user *arg) 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 495c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy int err; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_ioctl_args args; 497c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy struct net_device *dev = NULL; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args))) 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Null terminate this sucker, just in case. */ 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.device1[23] = 0; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.u.device2[23] = 0; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 506c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy rtnl_lock(); 507c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (args.cmd) { 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_INGRESS_PRIORITY_CMD: 510c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_EGRESS_PRIORITY_CMD: 511c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_FLAG_CMD: 512c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case ADD_VLAN_CMD: 513c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case DEL_VLAN_CMD: 514c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case GET_VLAN_REALDEV_NAME_CMD: 515c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case GET_VLAN_VID_CMD: 516c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -ENODEV; 51765d292a2ef2df66fd1ab83447afee71ef3720dedPavel Emelyanov dev = __dev_get_by_name(net, args.device1); 518c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy if (!dev) 519c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy goto out; 520c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 521c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EINVAL; 52226a25239d7a660cc7162e2463b48b40d544364d0Joonwoo Park if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev)) 523c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy goto out; 524c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy } 525c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy 526c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy switch (args.cmd) { 527c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy case SET_VLAN_INGRESS_PRIORITY_CMD: 528c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 529276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 530c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 531c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy vlan_dev_set_ingress_priority(dev, 532c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy args.u.skb_priority, 533c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy args.vlan_qos); 534fffe470a803e7f7b74c016291e542a0162761209Patrick McHardy err = 0; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_EGRESS_PRIORITY_CMD: 538c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 539276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 540c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 541c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = vlan_dev_set_egress_priority(dev, 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.u.skb_priority, 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds args.vlan_qos); 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_FLAG_CMD: 547c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 548276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 549c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 550b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy err = vlan_dev_change_flags(dev, 551b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy args.vlan_qos ? args.u.flag : 0, 552b3ce0325f2bf1bb737cb8fc7c349ce8fefdd9e40Patrick McHardy args.u.flag); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SET_VLAN_NAME_TYPE_CMD: 556c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 557276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 558e35de02615f97b785dc6f73cba421cea06bcbd10Pavel Emelyanov break; 559c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy if ((args.u.name_type >= 0) && 560c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) { 5617a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov struct vlan_net *vn; 5627a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov 5637a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn = net_generic(net, vlan_net_id); 5647a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn->name_type = args.u.name_type; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = 0; 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ADD_VLAN_CMD: 572c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 573276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 574c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 5752ae0bf69b716d07126f0a9c17fcc2d76da172cb6Patrick McHardy err = register_vlan_device(dev, args.u.VID); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DEL_VLAN_CMD: 579c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy err = -EPERM; 580276996fda0f33bd5e5e028c426f852ecd119372bEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 581c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 58223289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_vlan_dev(dev, NULL); 583af30151709bcace1ca844d4bb8b7e2e392ff81ebPatrick McHardy err = 0; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GET_VLAN_REALDEV_NAME_CMD: 5873f5f4346b6d3c8bc33780a941da2473c4be2c989Andrew Morton err = 0; 588c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy vlan_dev_get_realdev_name(dev, args.u.device2); 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(arg, &args, 5902029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy sizeof(struct vlan_ioctl_args))) 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GET_VLAN_VID_CMD: 5953f5f4346b6d3c8bc33780a941da2473c4be2c989Andrew Morton err = 0; 59622d1ba74bbafa96d3f425cc12714d3fe8675183fPatrick McHardy args.u.VID = vlan_dev_vlan_id(dev); 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(arg, &args, 5982029cc2c84fb1169c80c6cf6fc375f11194ed8b5Patrick McHardy sizeof(struct vlan_ioctl_args))) 599122952fc2d6b5ca865e8475ec471d8944fa921c7YOSHIFUJI Hideaki err = -EFAULT; 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 603198a291ce3a9103f4738600e3cf5416b66e009d9Patrick McHardy err = -EOPNOTSUPP; 604c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy break; 6053ff50b7997fe06cd5d276b229967bb52d6b3b6c1Stephen Hemminger } 6067eb1b3d372a53fe9220b9e3b579886db0fe2f897Mika Kukkonenout: 607c17d8874f9959070552fddf1b4e1d73c0c144c0fPatrick McHardy rtnl_unlock(); 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6112c8c1e7297e19bdef3c178c3ea41d898a7716e3eAlexey Dobriyanstatic int __net_init vlan_init_net(struct net *net) 612d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov{ 613946d1a9298c9e592b189a168326603c92d782b5fEric W. Biederman struct vlan_net *vn = net_generic(net, vlan_net_id); 614d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov int err; 615d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 6167a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD; 6177a17a2f79f54a988d08ffa33ec9e1038bffec42bPavel Emelyanov 618cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov err = vlan_proc_init(net); 619cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov 620d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov return err; 621d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov} 622d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 6232c8c1e7297e19bdef3c178c3ea41d898a7716e3eAlexey Dobriyanstatic void __net_exit vlan_exit_net(struct net *net) 624d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov{ 625cd1c701432fbf84ad5ea1d8012ddd398a560bcccPavel Emelyanov vlan_proc_cleanup(net); 626d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov} 627d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 628d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanovstatic struct pernet_operations vlan_net_ops = { 629d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov .init = vlan_init_net, 630d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov .exit = vlan_exit_net, 631946d1a9298c9e592b189a168326603c92d782b5fEric W. Biederman .id = &vlan_net_id, 632946d1a9298c9e592b189a168326603c92d782b5fEric W. Biederman .size = sizeof(struct vlan_net), 633d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov}; 634d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 63569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic int __init vlan_proto_init(void) 63669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy{ 63769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy int err; 63869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 639da7c06c4a773b7903d3c09a25edbcb20bdc4af22Justin Mattock pr_info("%s v%s\n", vlan_fullname, vlan_version); 64069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 64191e2ff3528ac90b9dbcb04b76488e8ad74e3d3d9Eric W. Biederman err = register_pernet_subsys(&vlan_net_ops); 642d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov if (err < 0) 643d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov goto err0; 644d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanov 64569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy err = register_netdevice_notifier(&vlan_notifier_block); 64669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy if (err < 0) 64769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy goto err2; 64869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 64970c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy err = vlan_gvrp_init(); 65069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy if (err < 0) 65169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy goto err3; 65269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 65386fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward err = vlan_mvrp_init(); 65470c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy if (err < 0) 65570c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy goto err4; 65670c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 65786fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward err = vlan_netlink_init(); 65886fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward if (err < 0) 65986fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward goto err5; 66086fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward 66169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_ioctl_set(vlan_ioctl_handler); 66269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy return 0; 66369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 66486fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Warderr5: 66586fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward vlan_mvrp_uninit(); 66670c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardyerr4: 66770c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit(); 66869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardyerr3: 66969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy unregister_netdevice_notifier(&vlan_notifier_block); 67069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardyerr2: 67191e2ff3528ac90b9dbcb04b76488e8ad74e3d3d9Eric W. Biederman unregister_pernet_subsys(&vlan_net_ops); 672d9ed0f0e2dba45eec79ffbdd841757f87712349bPavel Emelyanoverr0: 67369ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy return err; 67469ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy} 67569ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 67669ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardystatic void __exit vlan_cleanup_module(void) 67769ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy{ 67869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_ioctl_set(NULL); 67969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy vlan_netlink_fini(); 68069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 68169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy unregister_netdevice_notifier(&vlan_notifier_block); 68269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 68391e2ff3528ac90b9dbcb04b76488e8ad74e3d3d9Eric W. Biederman unregister_pernet_subsys(&vlan_net_ops); 6846e327c11a91d190650df9aabe7d3694d4838bfa1Jesper Dangaard Brouer rcu_barrier(); /* Wait for completion of call_rcu()'s */ 68570c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy 68686fbe9bb599fcaf7e92e38dbfdad0414a2d68f7dDavid Ward vlan_mvrp_uninit(); 68770c03b49b80ba3634958acc31853771019c0ebd3Patrick McHardy vlan_gvrp_uninit(); 68869ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy} 68969ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 69069ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardymodule_init(vlan_proto_init); 69169ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardymodule_exit(vlan_cleanup_module); 69269ab4b7d6db68396dbfa827daa8d6f30f9b546a8Patrick McHardy 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_VERSION(DRV_VERSION); 695