Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * INET 802.1Q VLAN |
| 3 | * Ethernet-type device handling. |
| 4 | * |
| 5 | * Authors: Ben Greear <greearb@candelatech.com> |
Patrick McHardy | ad71208 | 2008-01-21 00:27:00 -0800 | [diff] [blame] | 6 | * Please send support related email to: netdev@vger.kernel.org |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 8 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * Fixes: |
| 10 | * Fix for packet capture - Nick Eggleston <nick@dccinc.com>; |
| 11 | * Add HW acceleration hooks - David S. Miller <davem@redhat.com>; |
| 12 | * Correct all the locking - David S. Miller <davem@redhat.com>; |
| 13 | * Use hash table for VLAN groups - David S. Miller <davem@redhat.com> |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License |
| 17 | * as published by the Free Software Foundation; either version |
| 18 | * 2 of the License, or (at your option) any later version. |
| 19 | */ |
| 20 | |
Joe Perches | afab2d2 | 2011-05-26 10:58:31 +0000 | [diff] [blame] | 21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 22 | |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 23 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | #include <linux/netdevice.h> |
| 26 | #include <linux/skbuff.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/init.h> |
Franck Bui-Huu | 8252474 | 2008-05-12 21:21:05 +0200 | [diff] [blame] | 29 | #include <linux/rculist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <net/p8022.h> |
| 31 | #include <net/arp.h> |
| 32 | #include <linux/rtnetlink.h> |
| 33 | #include <linux/notifier.h> |
Patrick McHardy | 6136276 | 2008-07-14 22:51:55 -0700 | [diff] [blame] | 34 | #include <net/rtnetlink.h> |
Eric W. Biederman | e9dc865 | 2007-09-12 13:02:17 +0200 | [diff] [blame] | 35 | #include <net/net_namespace.h> |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 36 | #include <net/netns/generic.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 37 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | #include <linux/if_vlan.h> |
| 40 | #include "vlan.h" |
| 41 | #include "vlanproc.h" |
| 42 | |
| 43 | #define DRV_VERSION "1.8" |
| 44 | |
| 45 | /* Global VLAN variables */ |
| 46 | |
Alexey Dobriyan | c7d03a0 | 2016-11-17 04:58:21 +0300 | [diff] [blame] | 47 | unsigned int vlan_net_id __read_mostly; |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 48 | |
Stephen Hemminger | b3020061 | 2008-10-28 22:12:36 -0700 | [diff] [blame] | 49 | const char vlan_fullname[] = "802.1Q VLAN Support"; |
| 50 | const char vlan_version[] = DRV_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | /* End of global variables definitions. */ |
| 53 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 54 | static int vlan_group_prealloc_vid(struct vlan_group *vg, |
| 55 | __be16 vlan_proto, u16 vlan_id) |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 56 | { |
| 57 | struct net_device **array; |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 58 | unsigned int pidx, vidx; |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 59 | unsigned int size; |
| 60 | |
| 61 | ASSERT_RTNL(); |
| 62 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 63 | pidx = vlan_proto_idx(vlan_proto); |
| 64 | vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN; |
| 65 | array = vg->vlan_devices_arrays[pidx][vidx]; |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 66 | if (array != NULL) |
| 67 | return 0; |
| 68 | |
| 69 | size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN; |
| 70 | array = kzalloc(size, GFP_KERNEL); |
| 71 | if (array == NULL) |
| 72 | return -ENOBUFS; |
| 73 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 74 | vg->vlan_devices_arrays[pidx][vidx] = array; |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 75 | return 0; |
Patrick McHardy | 42429aa | 2007-06-13 12:05:59 -0700 | [diff] [blame] | 76 | } |
| 77 | |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 78 | void unregister_vlan_dev(struct net_device *dev, struct list_head *head) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 80 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
Patrick McHardy | af30151 | 2008-01-21 00:25:50 -0800 | [diff] [blame] | 81 | struct net_device *real_dev = vlan->real_dev; |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 82 | struct vlan_info *vlan_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct vlan_group *grp; |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 84 | u16 vlan_id = vlan->vlan_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
| 86 | ASSERT_RTNL(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 88 | vlan_info = rtnl_dereference(real_dev->vlan_info); |
| 89 | BUG_ON(!vlan_info); |
| 90 | |
| 91 | grp = &vlan_info->grp; |
Patrick McHardy | acc5efb | 2008-01-21 00:25:31 -0800 | [diff] [blame] | 92 | |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 93 | grp->nr_vlan_devs--; |
Patrick McHardy | af30151 | 2008-01-21 00:25:50 -0800 | [diff] [blame] | 94 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 95 | if (vlan->flags & VLAN_FLAG_MVRP) |
| 96 | vlan_mvrp_request_leave(dev); |
Eric Dumazet | 55aee10 | 2011-05-10 12:22:54 -0700 | [diff] [blame] | 97 | if (vlan->flags & VLAN_FLAG_GVRP) |
| 98 | vlan_gvrp_request_leave(dev); |
| 99 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 100 | vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL); |
Veaceslav Falico | 47701a3 | 2013-09-25 09:20:30 +0200 | [diff] [blame] | 101 | |
| 102 | netdev_upper_dev_unlink(real_dev, dev); |
Eric Dumazet | 48752e1 | 2011-05-09 04:40:44 +0000 | [diff] [blame] | 103 | /* Because unregister_netdevice_queue() makes sure at least one rcu |
| 104 | * grace period is respected before device freeing, |
| 105 | * we dont need to call synchronize_net() here. |
| 106 | */ |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 107 | unregister_netdevice_queue(dev, head); |
Patrick McHardy | ce30500 | 2008-07-05 21:26:41 -0700 | [diff] [blame] | 108 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 109 | if (grp->nr_vlan_devs == 0) { |
| 110 | vlan_mvrp_uninit_applicant(real_dev); |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 111 | vlan_gvrp_uninit_applicant(real_dev); |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 112 | } |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 113 | |
Cong Wang | 4a7df34 | 2013-03-22 19:14:07 +0000 | [diff] [blame] | 114 | /* Take it out of our own structures, but be sure to interlock with |
| 115 | * HW accelerating devices or SW vlan input packet processing if |
| 116 | * VLAN is not 0 (leave it there for 802.1p). |
| 117 | */ |
| 118 | if (vlan_id) |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 119 | vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id); |
Cong Wang | 4a7df34 | 2013-03-22 19:14:07 +0000 | [diff] [blame] | 120 | |
Patrick McHardy | af30151 | 2008-01-21 00:25:50 -0800 | [diff] [blame] | 121 | /* Get rid of the vlan's reference to real_dev */ |
| 122 | dev_put(real_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 125 | int vlan_check_real_dev(struct net_device *real_dev, |
| 126 | __be16 protocol, u16 vlan_id) |
Patrick McHardy | c1d3ee99 | 2007-06-13 12:06:14 -0700 | [diff] [blame] | 127 | { |
Stephen Hemminger | 656299f | 2008-11-19 21:53:47 -0800 | [diff] [blame] | 128 | const char *name = real_dev->name; |
Patrick McHardy | 40f98e1 | 2008-01-21 00:24:30 -0800 | [diff] [blame] | 129 | |
Patrick McHardy | c1d3ee99 | 2007-06-13 12:06:14 -0700 | [diff] [blame] | 130 | if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { |
Joe Perches | afab2d2 | 2011-05-26 10:58:31 +0000 | [diff] [blame] | 131 | pr_info("VLANs not supported on %s\n", name); |
Patrick McHardy | c1d3ee99 | 2007-06-13 12:06:14 -0700 | [diff] [blame] | 132 | return -EOPNOTSUPP; |
| 133 | } |
| 134 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 135 | if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) |
Patrick McHardy | c1d3ee99 | 2007-06-13 12:06:14 -0700 | [diff] [blame] | 136 | return -EEXIST; |
Patrick McHardy | c1d3ee99 | 2007-06-13 12:06:14 -0700 | [diff] [blame] | 137 | |
| 138 | return 0; |
| 139 | } |
| 140 | |
Patrick McHardy | 07b5b17 | 2007-06-13 12:07:54 -0700 | [diff] [blame] | 141 | int register_vlan_dev(struct net_device *dev) |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 142 | { |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 143 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 144 | struct net_device *real_dev = vlan->real_dev; |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 145 | u16 vlan_id = vlan->vlan_id; |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 146 | struct vlan_info *vlan_info; |
| 147 | struct vlan_group *grp; |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 148 | int err; |
| 149 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 150 | err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id); |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 151 | if (err) |
| 152 | return err; |
| 153 | |
| 154 | vlan_info = rtnl_dereference(real_dev->vlan_info); |
| 155 | /* vlan_info should be there now. vlan_vid_add took care of it */ |
| 156 | BUG_ON(!vlan_info); |
| 157 | |
| 158 | grp = &vlan_info->grp; |
| 159 | if (grp->nr_vlan_devs == 0) { |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 160 | err = vlan_gvrp_init_applicant(real_dev); |
| 161 | if (err < 0) |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 162 | goto out_vid_del; |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 163 | err = vlan_mvrp_init_applicant(real_dev); |
| 164 | if (err < 0) |
| 165 | goto out_uninit_gvrp; |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 166 | } |
| 167 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 168 | err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id); |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 169 | if (err < 0) |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 170 | goto out_uninit_mvrp; |
Pavel Emelyanov | 6772718 | 2008-03-26 16:27:22 -0700 | [diff] [blame] | 171 | |
Sabrina Dubroca | 952fcfd | 2016-08-12 16:10:33 +0200 | [diff] [blame] | 172 | vlan->nest_level = dev_get_nest_level(real_dev) + 1; |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 173 | err = register_netdevice(dev); |
| 174 | if (err < 0) |
Veaceslav Falico | 5df27e6 | 2013-09-25 09:20:29 +0200 | [diff] [blame] | 175 | goto out_uninit_mvrp; |
| 176 | |
| 177 | err = netdev_upper_dev_link(real_dev, dev); |
| 178 | if (err) |
| 179 | goto out_unregister_netdev; |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 180 | |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 181 | /* Account for reference in struct vlan_dev_priv */ |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 182 | dev_hold(real_dev); |
| 183 | |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 184 | netif_stacked_transfer_operstate(real_dev, dev); |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 185 | linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */ |
| 186 | |
| 187 | /* So, got the sucker initialized, now lets place |
| 188 | * it into our local structure. |
| 189 | */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 190 | vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev); |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 191 | grp->nr_vlan_devs++; |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 192 | |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 193 | return 0; |
| 194 | |
Veaceslav Falico | 5df27e6 | 2013-09-25 09:20:29 +0200 | [diff] [blame] | 195 | out_unregister_netdev: |
| 196 | unregister_netdevice(dev); |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 197 | out_uninit_mvrp: |
| 198 | if (grp->nr_vlan_devs == 0) |
| 199 | vlan_mvrp_uninit_applicant(real_dev); |
| 200 | out_uninit_gvrp: |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 201 | if (grp->nr_vlan_devs == 0) |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 202 | vlan_gvrp_uninit_applicant(real_dev); |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 203 | out_vid_del: |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 204 | vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id); |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 205 | return err; |
| 206 | } |
| 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | /* Attach a VLAN device to a mac address (ie Ethernet Card). |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 209 | * Returns 0 if the device was created or a negative error code otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | */ |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 211 | static int register_vlan_device(struct net_device *real_dev, u16 vlan_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | struct net_device *new_dev; |
Wang Sheng-Hui | 0c0667a | 2013-08-03 16:54:50 +0800 | [diff] [blame] | 214 | struct vlan_dev_priv *vlan; |
Pavel Emelyanov | 7a17a2f | 2008-04-16 00:54:39 -0700 | [diff] [blame] | 215 | struct net *net = dev_net(real_dev); |
| 216 | struct vlan_net *vn = net_generic(net, vlan_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | char name[IFNAMSIZ]; |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 218 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 220 | if (vlan_id >= VLAN_VID_MASK) |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 221 | return -ERANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 223 | err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id); |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 224 | if (err < 0) |
| 225 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | /* Gotta set up the fields for the device. */ |
Pavel Emelyanov | 7a17a2f | 2008-04-16 00:54:39 -0700 | [diff] [blame] | 228 | switch (vn->name_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | case VLAN_NAME_TYPE_RAW_PLUS_VID: |
| 230 | /* name will look like: eth1.0005 */ |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 231 | snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | break; |
| 233 | case VLAN_NAME_TYPE_PLUS_VID_NO_PAD: |
| 234 | /* Put our vlan.VID in the name. |
| 235 | * Name will look like: vlan5 |
| 236 | */ |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 237 | snprintf(name, IFNAMSIZ, "vlan%i", vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | break; |
| 239 | case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD: |
| 240 | /* Put our vlan.VID in the name. |
| 241 | * Name will look like: eth0.5 |
| 242 | */ |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 243 | snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | break; |
| 245 | case VLAN_NAME_TYPE_PLUS_VID: |
| 246 | /* Put our vlan.VID in the name. |
| 247 | * Name will look like: vlan0005 |
| 248 | */ |
| 249 | default: |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 250 | snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id); |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 251 | } |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 252 | |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 253 | new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name, |
| 254 | NET_NAME_UNKNOWN, vlan_setup); |
Arjan van de Ven | 5dd8d1e | 2006-07-03 00:25:33 -0700 | [diff] [blame] | 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | if (new_dev == NULL) |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 257 | return -ENOBUFS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Pavel Emelyanov | 65d292a | 2008-04-16 00:55:06 -0700 | [diff] [blame] | 259 | dev_net_set(new_dev, net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | /* need 4 bytes for extra VLAN header info, |
| 261 | * hope the underlying device can handle it. |
| 262 | */ |
| 263 | new_dev->mtu = real_dev->mtu; |
| 264 | |
Wang Sheng-Hui | 0c0667a | 2013-08-03 16:54:50 +0800 | [diff] [blame] | 265 | vlan = vlan_dev_priv(new_dev); |
| 266 | vlan->vlan_proto = htons(ETH_P_8021Q); |
| 267 | vlan->vlan_id = vlan_id; |
| 268 | vlan->real_dev = real_dev; |
| 269 | vlan->dent = NULL; |
| 270 | vlan->flags = VLAN_FLAG_REORDER_HDR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Patrick McHardy | 07b5b17 | 2007-06-13 12:07:54 -0700 | [diff] [blame] | 272 | new_dev->rtnl_link_ops = &vlan_link_ops; |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 273 | err = register_vlan_dev(new_dev); |
| 274 | if (err < 0) |
Patrick McHardy | e89fe42 | 2007-06-13 12:06:29 -0700 | [diff] [blame] | 275 | goto out_free_newdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 277 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | out_free_newdev: |
| 280 | free_netdev(new_dev); |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 281 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 284 | static void vlan_sync_address(struct net_device *dev, |
| 285 | struct net_device *vlandev) |
| 286 | { |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 287 | struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 288 | |
| 289 | /* May be called without an actual change */ |
Joe Perches | 53a2b3a | 2012-05-08 18:56:47 +0000 | [diff] [blame] | 290 | if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr)) |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 291 | return; |
| 292 | |
Mike Manning | 308453a | 2016-05-27 17:45:07 +0100 | [diff] [blame] | 293 | /* vlan continues to inherit address of lower device */ |
| 294 | if (vlan_dev_inherit_address(vlandev, dev)) |
| 295 | goto out; |
| 296 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 297 | /* vlan address was different from the old address and is equal to |
| 298 | * the new address */ |
Joe Perches | 53a2b3a | 2012-05-08 18:56:47 +0000 | [diff] [blame] | 299 | if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) && |
| 300 | ether_addr_equal(vlandev->dev_addr, dev->dev_addr)) |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 301 | dev_uc_del(dev, vlandev->dev_addr); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 302 | |
| 303 | /* vlan address was equal to the old address and is different from |
| 304 | * the new address */ |
Joe Perches | 53a2b3a | 2012-05-08 18:56:47 +0000 | [diff] [blame] | 305 | if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) && |
| 306 | !ether_addr_equal(vlandev->dev_addr, dev->dev_addr)) |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 307 | dev_uc_add(dev, vlandev->dev_addr); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 308 | |
Mike Manning | 308453a | 2016-05-27 17:45:07 +0100 | [diff] [blame] | 309 | out: |
Joe Perches | 07fc67b | 2014-01-20 09:52:14 -0800 | [diff] [blame] | 310 | ether_addr_copy(vlan->real_dev_addr, dev->dev_addr); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 311 | } |
| 312 | |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 313 | static void vlan_transfer_features(struct net_device *dev, |
| 314 | struct net_device *vlandev) |
| 315 | { |
Vlad Yasevich | fc0d48b | 2014-03-26 11:47:56 -0400 | [diff] [blame] | 316 | struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev); |
| 317 | |
Alexander Duyck | 1ae4be2 | 2008-09-11 20:17:05 -0700 | [diff] [blame] | 318 | vlandev->gso_max_size = dev->gso_max_size; |
Eric Dumazet | f6773c5 | 2016-03-16 21:59:49 -0700 | [diff] [blame] | 319 | vlandev->gso_max_segs = dev->gso_max_segs; |
John Fastabend | 029f5fc | 2010-10-30 14:22:32 +0000 | [diff] [blame] | 320 | |
Vlad Yasevich | fc0d48b | 2014-03-26 11:47:56 -0400 | [diff] [blame] | 321 | if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto)) |
John Fastabend | 029f5fc | 2010-10-30 14:22:32 +0000 | [diff] [blame] | 322 | vlandev->hard_header_len = dev->hard_header_len; |
| 323 | else |
| 324 | vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN; |
| 325 | |
Amerigo Wang | f4d5392 | 2012-10-29 17:22:28 +0000 | [diff] [blame] | 326 | #if IS_ENABLED(CONFIG_FCOE) |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 327 | vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid; |
| 328 | #endif |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 329 | |
| 330 | netdev_update_features(vlandev); |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 331 | } |
| 332 | |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 333 | static int __vlan_device_event(struct net_device *dev, unsigned long event) |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 334 | { |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 335 | int err = 0; |
| 336 | |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 337 | switch (event) { |
| 338 | case NETDEV_CHANGENAME: |
| 339 | vlan_proc_rem_dev(dev); |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 340 | err = vlan_proc_add_dev(dev); |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 341 | break; |
Pavel Emelyanov | 30688a9 | 2008-04-16 00:57:01 -0700 | [diff] [blame] | 342 | case NETDEV_REGISTER: |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 343 | err = vlan_proc_add_dev(dev); |
Pavel Emelyanov | 30688a9 | 2008-04-16 00:57:01 -0700 | [diff] [blame] | 344 | break; |
| 345 | case NETDEV_UNREGISTER: |
| 346 | vlan_proc_rem_dev(dev); |
| 347 | break; |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 348 | } |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 349 | |
| 350 | return err; |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 351 | } |
| 352 | |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 353 | static int vlan_device_event(struct notifier_block *unused, unsigned long event, |
| 354 | void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 356 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 357 | struct vlan_group *grp; |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 358 | struct vlan_info *vlan_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | int i, flgs; |
| 360 | struct net_device *vlandev; |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 361 | struct vlan_dev_priv *vlan; |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 362 | bool last = false; |
Patrick McHardy | 29906f6 | 2009-10-29 23:43:00 -0700 | [diff] [blame] | 363 | LIST_HEAD(list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
WANG Cong | 9c5ff24 | 2014-07-25 15:25:10 -0700 | [diff] [blame] | 365 | if (is_vlan_dev(dev)) { |
| 366 | int err = __vlan_device_event(dev, event); |
| 367 | |
| 368 | if (err) |
| 369 | return notifier_from_errno(err); |
| 370 | } |
Pavel Emelyanov | 802fb17 | 2008-04-02 00:08:01 -0700 | [diff] [blame] | 371 | |
Pedro Garcia | ad1afb0 | 2010-07-18 15:38:44 -0700 | [diff] [blame] | 372 | if ((event == NETDEV_UP) && |
Patrick McHardy | f646968 | 2013-04-19 02:04:27 +0000 | [diff] [blame] | 373 | (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) { |
Joe Perches | afab2d2 | 2011-05-26 10:58:31 +0000 | [diff] [blame] | 374 | pr_info("adding VLAN 0 to HW filter on device %s\n", |
Pedro Garcia | ad1afb0 | 2010-07-18 15:38:44 -0700 | [diff] [blame] | 375 | dev->name); |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 376 | vlan_vid_add(dev, htons(ETH_P_8021Q), 0); |
Pedro Garcia | ad1afb0 | 2010-07-18 15:38:44 -0700 | [diff] [blame] | 377 | } |
| 378 | |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 379 | vlan_info = rtnl_dereference(dev->vlan_info); |
| 380 | if (!vlan_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | goto out; |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 382 | grp = &vlan_info->grp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
| 384 | /* It is OK that we do not hold the group lock right now, |
| 385 | * as we run under the RTNL lock. |
| 386 | */ |
| 387 | |
| 388 | switch (event) { |
| 389 | case NETDEV_CHANGE: |
| 390 | /* Propagate real device state to vlan devices */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 391 | vlan_group_for_each_dev(grp, i, vlandev) |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 392 | netif_stacked_transfer_operstate(dev, vlandev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | break; |
| 394 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 395 | case NETDEV_CHANGEADDR: |
| 396 | /* Adjust unicast filters on underlying device */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 397 | vlan_group_for_each_dev(grp, i, vlandev) { |
Patrick McHardy | d932e04 | 2007-11-10 21:51:40 -0800 | [diff] [blame] | 398 | flgs = vlandev->flags; |
| 399 | if (!(flgs & IFF_UP)) |
| 400 | continue; |
| 401 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 402 | vlan_sync_address(dev, vlandev); |
| 403 | } |
| 404 | break; |
| 405 | |
Herbert Xu | 2e477c9 | 2009-07-20 07:35:37 -0700 | [diff] [blame] | 406 | case NETDEV_CHANGEMTU: |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 407 | vlan_group_for_each_dev(grp, i, vlandev) { |
Herbert Xu | 2e477c9 | 2009-07-20 07:35:37 -0700 | [diff] [blame] | 408 | if (vlandev->mtu <= dev->mtu) |
| 409 | continue; |
| 410 | |
| 411 | dev_set_mtu(vlandev, dev->mtu); |
| 412 | } |
| 413 | break; |
| 414 | |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 415 | case NETDEV_FEAT_CHANGE: |
| 416 | /* Propagate device features to underlying device */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 417 | vlan_group_for_each_dev(grp, i, vlandev) |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 418 | vlan_transfer_features(dev, vlandev); |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 419 | break; |
| 420 | |
David S. Miller | 99c4a26 | 2015-03-18 22:52:33 -0400 | [diff] [blame] | 421 | case NETDEV_DOWN: { |
| 422 | struct net_device *tmp; |
| 423 | LIST_HEAD(close_list); |
| 424 | |
Patrick McHardy | f646968 | 2013-04-19 02:04:27 +0000 | [diff] [blame] | 425 | if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER) |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 426 | vlan_vid_del(dev, htons(ETH_P_8021Q), 0); |
Amir Hanania | efc73f4 | 2012-07-09 20:47:19 +0000 | [diff] [blame] | 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | /* Put all VLANs for this dev in the down state too. */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 429 | vlan_group_for_each_dev(grp, i, vlandev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | flgs = vlandev->flags; |
| 431 | if (!(flgs & IFF_UP)) |
| 432 | continue; |
| 433 | |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 434 | vlan = vlan_dev_priv(vlandev); |
Patrick McHardy | 5e75659 | 2009-11-25 07:54:54 +0000 | [diff] [blame] | 435 | if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) |
David S. Miller | 99c4a26 | 2015-03-18 22:52:33 -0400 | [diff] [blame] | 436 | list_add(&vlandev->close_list, &close_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
David S. Miller | 99c4a26 | 2015-03-18 22:52:33 -0400 | [diff] [blame] | 439 | dev_close_many(&close_list, false); |
| 440 | |
| 441 | list_for_each_entry_safe(vlandev, tmp, &close_list, close_list) { |
| 442 | netif_stacked_transfer_operstate(dev, vlandev); |
| 443 | list_del_init(&vlandev->close_list); |
| 444 | } |
| 445 | list_del(&close_list); |
| 446 | break; |
| 447 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | case NETDEV_UP: |
| 449 | /* Put all VLANs for this dev in the up state too. */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 450 | vlan_group_for_each_dev(grp, i, vlandev) { |
Vlad Yasevich | be346ff | 2015-05-12 20:53:14 -0400 | [diff] [blame] | 451 | flgs = dev_get_flags(vlandev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | if (flgs & IFF_UP) |
| 453 | continue; |
| 454 | |
Jiri Pirko | 7da82c0 | 2011-12-08 04:11:15 +0000 | [diff] [blame] | 455 | vlan = vlan_dev_priv(vlandev); |
Patrick McHardy | 5e75659 | 2009-11-25 07:54:54 +0000 | [diff] [blame] | 456 | if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) |
| 457 | dev_change_flags(vlandev, flgs | IFF_UP); |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 458 | netif_stacked_transfer_operstate(dev, vlandev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
| 460 | break; |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | case NETDEV_UNREGISTER: |
David Lamparter | 3b27e10 | 2010-09-17 03:22:19 +0000 | [diff] [blame] | 463 | /* twiddle thumbs on netns device moves */ |
| 464 | if (dev->reg_state != NETREG_UNREGISTERING) |
| 465 | break; |
| 466 | |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 467 | vlan_group_for_each_dev(grp, i, vlandev) { |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 468 | /* removal of last vid destroys vlan_info, abort |
Patrick McHardy | 29906f6 | 2009-10-29 23:43:00 -0700 | [diff] [blame] | 469 | * afterwards */ |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 470 | if (vlan_info->nr_vids == 1) |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 471 | last = true; |
Patrick McHardy | 29906f6 | 2009-10-29 23:43:00 -0700 | [diff] [blame] | 472 | |
| 473 | unregister_vlan_dev(vlandev, &list); |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 474 | if (last) |
| 475 | break; |
Patrick McHardy | 29906f6 | 2009-10-29 23:43:00 -0700 | [diff] [blame] | 476 | } |
| 477 | unregister_netdevice_many(&list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | break; |
Jiri Pirko | 1c01fe1 | 2010-03-10 10:30:19 +0000 | [diff] [blame] | 479 | |
| 480 | case NETDEV_PRE_TYPE_CHANGE: |
| 481 | /* Forbid underlaying device to change its type. */ |
Jiri Pirko | 18c22a0 | 2012-10-17 01:37:36 +0000 | [diff] [blame] | 482 | if (vlan_uses_dev(dev)) |
| 483 | return NOTIFY_BAD; |
| 484 | break; |
Ben Hutchings | 9960647 | 2011-04-15 13:46:49 +0000 | [diff] [blame] | 485 | |
| 486 | case NETDEV_NOTIFY_PEERS: |
Ben Hutchings | 7c89943 | 2011-04-15 13:47:51 +0000 | [diff] [blame] | 487 | case NETDEV_BONDING_FAILOVER: |
Jiri Pirko | 4aa5dee | 2013-07-20 12:13:53 +0200 | [diff] [blame] | 488 | case NETDEV_RESEND_IGMP: |
Ben Hutchings | 9960647 | 2011-04-15 13:46:49 +0000 | [diff] [blame] | 489 | /* Propagate to vlan devices */ |
Patrick McHardy | 1fd9b1f | 2013-04-19 02:04:29 +0000 | [diff] [blame] | 490 | vlan_group_for_each_dev(grp, i, vlandev) |
Ben Hutchings | 7c89943 | 2011-04-15 13:47:51 +0000 | [diff] [blame] | 491 | call_netdevice_notifiers(event, vlandev); |
Ben Hutchings | 9960647 | 2011-04-15 13:46:49 +0000 | [diff] [blame] | 492 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 493 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
| 495 | out: |
| 496 | return NOTIFY_DONE; |
| 497 | } |
| 498 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 499 | static struct notifier_block vlan_notifier_block __read_mostly = { |
| 500 | .notifier_call = vlan_device_event, |
| 501 | }; |
| 502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | /* |
| 504 | * VLAN IOCTL handler. |
| 505 | * o execute requested action or pass command to the device driver |
| 506 | * arg is really a struct vlan_ioctl_args __user *. |
| 507 | */ |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 508 | static int vlan_ioctl_handler(struct net *net, void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 510 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | struct vlan_ioctl_args args; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 512 | struct net_device *dev = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args))) |
| 515 | return -EFAULT; |
| 516 | |
| 517 | /* Null terminate this sucker, just in case. */ |
Gao Feng | 9c403b6 | 2016-10-18 08:57:50 +0800 | [diff] [blame] | 518 | args.device1[sizeof(args.device1) - 1] = 0; |
| 519 | args.u.device2[sizeof(args.u.device2) - 1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 521 | rtnl_lock(); |
| 522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | switch (args.cmd) { |
| 524 | case SET_VLAN_INGRESS_PRIORITY_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 525 | case SET_VLAN_EGRESS_PRIORITY_CMD: |
| 526 | case SET_VLAN_FLAG_CMD: |
| 527 | case ADD_VLAN_CMD: |
| 528 | case DEL_VLAN_CMD: |
| 529 | case GET_VLAN_REALDEV_NAME_CMD: |
| 530 | case GET_VLAN_VID_CMD: |
| 531 | err = -ENODEV; |
Pavel Emelyanov | 65d292a | 2008-04-16 00:55:06 -0700 | [diff] [blame] | 532 | dev = __dev_get_by_name(net, args.device1); |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 533 | if (!dev) |
| 534 | goto out; |
| 535 | |
| 536 | err = -EINVAL; |
Joonwoo Park | 26a2523 | 2008-07-08 03:22:16 -0700 | [diff] [blame] | 537 | if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 538 | goto out; |
| 539 | } |
| 540 | |
| 541 | switch (args.cmd) { |
| 542 | case SET_VLAN_INGRESS_PRIORITY_CMD: |
| 543 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 544 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 545 | break; |
| 546 | vlan_dev_set_ingress_priority(dev, |
| 547 | args.u.skb_priority, |
| 548 | args.vlan_qos); |
Patrick McHardy | fffe470 | 2007-11-07 01:31:32 -0800 | [diff] [blame] | 549 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | break; |
| 551 | |
| 552 | case SET_VLAN_EGRESS_PRIORITY_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 553 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 554 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 555 | break; |
| 556 | err = vlan_dev_set_egress_priority(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | args.u.skb_priority, |
| 558 | args.vlan_qos); |
| 559 | break; |
| 560 | |
| 561 | case SET_VLAN_FLAG_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 562 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 563 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 564 | break; |
Patrick McHardy | b3ce032 | 2008-07-05 21:26:27 -0700 | [diff] [blame] | 565 | err = vlan_dev_change_flags(dev, |
| 566 | args.vlan_qos ? args.u.flag : 0, |
| 567 | args.u.flag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | break; |
| 569 | |
| 570 | case SET_VLAN_NAME_TYPE_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 571 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 572 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Pavel Emelyanov | e35de02 | 2007-12-06 22:52:16 -0800 | [diff] [blame] | 573 | break; |
Tobias Klauser | 403f072 | 2016-10-18 08:44:17 +0200 | [diff] [blame] | 574 | if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) { |
Pavel Emelyanov | 7a17a2f | 2008-04-16 00:54:39 -0700 | [diff] [blame] | 575 | struct vlan_net *vn; |
| 576 | |
| 577 | vn = net_generic(net, vlan_net_id); |
| 578 | vn->name_type = args.u.name_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | err = 0; |
| 580 | } else { |
| 581 | err = -EINVAL; |
| 582 | } |
| 583 | break; |
| 584 | |
| 585 | case ADD_VLAN_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 586 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 587 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 588 | break; |
Patrick McHardy | 2ae0bf6 | 2007-06-13 12:06:43 -0700 | [diff] [blame] | 589 | err = register_vlan_device(dev, args.u.VID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | break; |
| 591 | |
| 592 | case DEL_VLAN_CMD: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 593 | err = -EPERM; |
Eric W. Biederman | 276996f | 2012-11-16 03:03:09 +0000 | [diff] [blame] | 594 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 595 | break; |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 596 | unregister_vlan_dev(dev, NULL); |
Patrick McHardy | af30151 | 2008-01-21 00:25:50 -0800 | [diff] [blame] | 597 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | break; |
| 599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | case GET_VLAN_REALDEV_NAME_CMD: |
Andrew Morton | 3f5f434 | 2007-07-24 15:37:11 -0700 | [diff] [blame] | 601 | err = 0; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 602 | vlan_dev_get_realdev_name(dev, args.u.device2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (copy_to_user(arg, &args, |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 604 | sizeof(struct vlan_ioctl_args))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | break; |
| 607 | |
| 608 | case GET_VLAN_VID_CMD: |
Andrew Morton | 3f5f434 | 2007-07-24 15:37:11 -0700 | [diff] [blame] | 609 | err = 0; |
Patrick McHardy | 22d1ba7 | 2008-07-08 03:23:57 -0700 | [diff] [blame] | 610 | args.u.VID = vlan_dev_vlan_id(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | if (copy_to_user(arg, &args, |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 612 | sizeof(struct vlan_ioctl_args))) |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 613 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | break; |
| 615 | |
| 616 | default: |
Patrick McHardy | 198a291 | 2008-01-21 00:24:59 -0800 | [diff] [blame] | 617 | err = -EOPNOTSUPP; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 618 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 619 | } |
Mika Kukkonen | 7eb1b3d | 2005-12-21 18:39:49 -0800 | [diff] [blame] | 620 | out: |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 621 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | return err; |
| 623 | } |
| 624 | |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 625 | static struct sk_buff **vlan_gro_receive(struct sk_buff **head, |
| 626 | struct sk_buff *skb) |
| 627 | { |
| 628 | struct sk_buff *p, **pp = NULL; |
| 629 | struct vlan_hdr *vhdr; |
| 630 | unsigned int hlen, off_vlan; |
| 631 | const struct packet_offload *ptype; |
| 632 | __be16 type; |
| 633 | int flush = 1; |
| 634 | |
| 635 | off_vlan = skb_gro_offset(skb); |
| 636 | hlen = off_vlan + sizeof(*vhdr); |
| 637 | vhdr = skb_gro_header_fast(skb, off_vlan); |
| 638 | if (skb_gro_header_hard(skb, hlen)) { |
| 639 | vhdr = skb_gro_header_slow(skb, hlen, off_vlan); |
| 640 | if (unlikely(!vhdr)) |
| 641 | goto out; |
| 642 | } |
| 643 | |
| 644 | type = vhdr->h_vlan_encapsulated_proto; |
| 645 | |
| 646 | rcu_read_lock(); |
| 647 | ptype = gro_find_receive_by_type(type); |
| 648 | if (!ptype) |
| 649 | goto out_unlock; |
| 650 | |
| 651 | flush = 0; |
| 652 | |
| 653 | for (p = *head; p; p = p->next) { |
| 654 | struct vlan_hdr *vhdr2; |
| 655 | |
| 656 | if (!NAPI_GRO_CB(p)->same_flow) |
| 657 | continue; |
| 658 | |
| 659 | vhdr2 = (struct vlan_hdr *)(p->data + off_vlan); |
| 660 | if (compare_vlan_header(vhdr, vhdr2)) |
| 661 | NAPI_GRO_CB(p)->same_flow = 0; |
| 662 | } |
| 663 | |
| 664 | skb_gro_pull(skb, sizeof(*vhdr)); |
| 665 | skb_gro_postpull_rcsum(skb, vhdr, sizeof(*vhdr)); |
Sabrina Dubroca | fcd91dd | 2016-10-20 15:58:02 +0200 | [diff] [blame] | 666 | pp = call_gro_receive(ptype->callbacks.gro_receive, head, skb); |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 667 | |
| 668 | out_unlock: |
| 669 | rcu_read_unlock(); |
| 670 | out: |
| 671 | NAPI_GRO_CB(skb)->flush |= flush; |
| 672 | |
| 673 | return pp; |
| 674 | } |
| 675 | |
| 676 | static int vlan_gro_complete(struct sk_buff *skb, int nhoff) |
| 677 | { |
| 678 | struct vlan_hdr *vhdr = (struct vlan_hdr *)(skb->data + nhoff); |
| 679 | __be16 type = vhdr->h_vlan_encapsulated_proto; |
| 680 | struct packet_offload *ptype; |
| 681 | int err = -ENOENT; |
| 682 | |
| 683 | rcu_read_lock(); |
| 684 | ptype = gro_find_complete_by_type(type); |
| 685 | if (ptype) |
| 686 | err = ptype->callbacks.gro_complete(skb, nhoff + sizeof(*vhdr)); |
| 687 | |
| 688 | rcu_read_unlock(); |
| 689 | return err; |
| 690 | } |
| 691 | |
| 692 | static struct packet_offload vlan_packet_offloads[] __read_mostly = { |
| 693 | { |
| 694 | .type = cpu_to_be16(ETH_P_8021Q), |
| 695 | .priority = 10, |
| 696 | .callbacks = { |
| 697 | .gro_receive = vlan_gro_receive, |
| 698 | .gro_complete = vlan_gro_complete, |
| 699 | }, |
| 700 | }, |
| 701 | { |
| 702 | .type = cpu_to_be16(ETH_P_8021AD), |
| 703 | .priority = 10, |
| 704 | .callbacks = { |
| 705 | .gro_receive = vlan_gro_receive, |
| 706 | .gro_complete = vlan_gro_complete, |
| 707 | }, |
| 708 | }, |
| 709 | }; |
| 710 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 711 | static int __net_init vlan_init_net(struct net *net) |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 712 | { |
Eric W. Biederman | 946d1a9 | 2009-11-29 15:46:05 +0000 | [diff] [blame] | 713 | struct vlan_net *vn = net_generic(net, vlan_net_id); |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 714 | int err; |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 715 | |
Pavel Emelyanov | 7a17a2f | 2008-04-16 00:54:39 -0700 | [diff] [blame] | 716 | vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD; |
| 717 | |
Pavel Emelyanov | cd1c701 | 2008-04-16 00:51:12 -0700 | [diff] [blame] | 718 | err = vlan_proc_init(net); |
Pavel Emelyanov | cd1c701 | 2008-04-16 00:51:12 -0700 | [diff] [blame] | 719 | |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 720 | return err; |
| 721 | } |
| 722 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 723 | static void __net_exit vlan_exit_net(struct net *net) |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 724 | { |
Pavel Emelyanov | cd1c701 | 2008-04-16 00:51:12 -0700 | [diff] [blame] | 725 | vlan_proc_cleanup(net); |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | static struct pernet_operations vlan_net_ops = { |
| 729 | .init = vlan_init_net, |
| 730 | .exit = vlan_exit_net, |
Eric W. Biederman | 946d1a9 | 2009-11-29 15:46:05 +0000 | [diff] [blame] | 731 | .id = &vlan_net_id, |
| 732 | .size = sizeof(struct vlan_net), |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 733 | }; |
| 734 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 735 | static int __init vlan_proto_init(void) |
| 736 | { |
| 737 | int err; |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 738 | unsigned int i; |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 739 | |
Justin Mattock | da7c06c | 2011-05-23 20:43:48 +0000 | [diff] [blame] | 740 | pr_info("%s v%s\n", vlan_fullname, vlan_version); |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 741 | |
Eric W. Biederman | 91e2ff3 | 2009-12-02 13:19:08 +0000 | [diff] [blame] | 742 | err = register_pernet_subsys(&vlan_net_ops); |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 743 | if (err < 0) |
| 744 | goto err0; |
| 745 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 746 | err = register_netdevice_notifier(&vlan_notifier_block); |
| 747 | if (err < 0) |
| 748 | goto err2; |
| 749 | |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 750 | err = vlan_gvrp_init(); |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 751 | if (err < 0) |
| 752 | goto err3; |
| 753 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 754 | err = vlan_mvrp_init(); |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 755 | if (err < 0) |
| 756 | goto err4; |
| 757 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 758 | err = vlan_netlink_init(); |
| 759 | if (err < 0) |
| 760 | goto err5; |
| 761 | |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 762 | for (i = 0; i < ARRAY_SIZE(vlan_packet_offloads); i++) |
| 763 | dev_add_offload(&vlan_packet_offloads[i]); |
| 764 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 765 | vlan_ioctl_set(vlan_ioctl_handler); |
| 766 | return 0; |
| 767 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 768 | err5: |
| 769 | vlan_mvrp_uninit(); |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 770 | err4: |
| 771 | vlan_gvrp_uninit(); |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 772 | err3: |
| 773 | unregister_netdevice_notifier(&vlan_notifier_block); |
| 774 | err2: |
Eric W. Biederman | 91e2ff3 | 2009-12-02 13:19:08 +0000 | [diff] [blame] | 775 | unregister_pernet_subsys(&vlan_net_ops); |
Pavel Emelyanov | d9ed0f0 | 2008-04-16 00:49:09 -0700 | [diff] [blame] | 776 | err0: |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 777 | return err; |
| 778 | } |
| 779 | |
| 780 | static void __exit vlan_cleanup_module(void) |
| 781 | { |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 782 | unsigned int i; |
| 783 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 784 | vlan_ioctl_set(NULL); |
Toshiaki Makita | 66e5133 | 2015-06-01 21:55:06 +0900 | [diff] [blame] | 785 | |
| 786 | for (i = 0; i < ARRAY_SIZE(vlan_packet_offloads); i++) |
| 787 | dev_remove_offload(&vlan_packet_offloads[i]); |
| 788 | |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 789 | vlan_netlink_fini(); |
| 790 | |
| 791 | unregister_netdevice_notifier(&vlan_notifier_block); |
| 792 | |
Eric W. Biederman | 91e2ff3 | 2009-12-02 13:19:08 +0000 | [diff] [blame] | 793 | unregister_pernet_subsys(&vlan_net_ops); |
Jesper Dangaard Brouer | 6e327c1 | 2009-06-08 03:11:28 +0000 | [diff] [blame] | 794 | rcu_barrier(); /* Wait for completion of call_rcu()'s */ |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 795 | |
David Ward | 86fbe9b | 2013-02-08 17:17:07 +0000 | [diff] [blame] | 796 | vlan_mvrp_uninit(); |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 797 | vlan_gvrp_uninit(); |
Patrick McHardy | 69ab4b7 | 2008-01-21 00:25:15 -0800 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | module_init(vlan_proto_init); |
| 801 | module_exit(vlan_cleanup_module); |
| 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | MODULE_LICENSE("GPL"); |
| 804 | MODULE_VERSION(DRV_VERSION); |