Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This is the linux wireless configuration interface. |
| 3 | * |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 8 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 9 | #include <linux/if.h> |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/err.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 12 | #include <linux/list.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 14 | #include <linux/nl80211.h> |
| 15 | #include <linux/debugfs.h> |
| 16 | #include <linux/notifier.h> |
| 17 | #include <linux/device.h> |
Zhu Yi | 16a832e | 2009-08-19 16:08:22 +0800 | [diff] [blame] | 18 | #include <linux/etherdevice.h> |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 19 | #include <linux/rtnetlink.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 20 | #include <linux/sched.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 21 | #include <net/genetlink.h> |
| 22 | #include <net/cfg80211.h> |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 23 | #include "nl80211.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 24 | #include "core.h" |
| 25 | #include "sysfs.h" |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 26 | #include "debugfs.h" |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 27 | #include "wext-compat.h" |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 28 | #include "ethtool.h" |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 29 | #include "rdev-ops.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 30 | |
| 31 | /* name for sysfs, %d is appended */ |
| 32 | #define PHY_NAME "phy" |
| 33 | |
| 34 | MODULE_AUTHOR("Johannes Berg"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | MODULE_DESCRIPTION("wireless configuration support"); |
Marcel Holtmann | fb4e156 | 2013-04-28 16:22:06 -0700 | [diff] [blame] | 37 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 38 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 39 | /* RCU-protected (and RTNL for writers) */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 40 | LIST_HEAD(cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 41 | int cfg80211_rdev_list_generation; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 42 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 43 | /* for debugfs */ |
| 44 | static struct dentry *ieee80211_debugfs_dir; |
| 45 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 46 | /* for the cleanup, scan and event works */ |
| 47 | struct workqueue_struct *cfg80211_wq; |
| 48 | |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 49 | static bool cfg80211_disable_40mhz_24ghz; |
| 50 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); |
| 51 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, |
| 52 | "Disable 40MHz support in the 2.4GHz band"); |
| 53 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 54 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 55 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 56 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 57 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 58 | ASSERT_RTNL(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 59 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 60 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 61 | if (rdev->wiphy_idx == wiphy_idx) { |
| 62 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 63 | break; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | return result; |
| 68 | } |
| 69 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 70 | int get_wiphy_idx(struct wiphy *wiphy) |
| 71 | { |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 72 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| 73 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 74 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 75 | } |
| 76 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 77 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
| 78 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 79 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 80 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 81 | ASSERT_RTNL(); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 82 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 83 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 84 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 85 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 86 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 87 | } |
| 88 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 89 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 90 | char *newname) |
| 91 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 92 | struct cfg80211_registered_device *rdev2; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 93 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 94 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 95 | ASSERT_RTNL(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 96 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 97 | /* prohibit calling the thing phy%d when %d is not its number */ |
| 98 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 99 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 100 | /* count number of places needed to print wiphy_idx */ |
| 101 | digits = 1; |
| 102 | while (wiphy_idx /= 10) |
| 103 | digits++; |
| 104 | /* |
| 105 | * deny the name if it is phy<idx> where <idx> is printed |
| 106 | * without leading zeroes. taken == strlen(newname) here |
| 107 | */ |
| 108 | if (taken == strlen(PHY_NAME) + digits) |
| 109 | return -EINVAL; |
| 110 | } |
| 111 | |
| 112 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 113 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 114 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 115 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 116 | |
| 117 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 118 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 119 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 120 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 121 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 122 | result = device_rename(&rdev->wiphy.dev, newname); |
| 123 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 124 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 125 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 126 | if (rdev->wiphy.debugfsdir && |
| 127 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 128 | rdev->wiphy.debugfsdir, |
| 129 | rdev->wiphy.debugfsdir->d_parent, |
| 130 | newname)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 131 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 132 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 133 | nl80211_notify_dev_rename(rdev); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 134 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 135 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 136 | } |
| 137 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 138 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 139 | struct net *net) |
| 140 | { |
| 141 | struct wireless_dev *wdev; |
| 142 | int err = 0; |
| 143 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 144 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 145 | return -EOPNOTSUPP; |
| 146 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 147 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 148 | if (!wdev->netdev) |
| 149 | continue; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 150 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 151 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 152 | if (err) |
| 153 | break; |
| 154 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 155 | } |
| 156 | |
| 157 | if (err) { |
| 158 | /* failed -- clean up to old netns */ |
| 159 | net = wiphy_net(&rdev->wiphy); |
| 160 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 161 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 162 | list) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 163 | if (!wdev->netdev) |
| 164 | continue; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 165 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 166 | err = dev_change_net_namespace(wdev->netdev, net, |
| 167 | "wlan%d"); |
| 168 | WARN_ON(err); |
| 169 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 170 | } |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 171 | |
| 172 | return err; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | wiphy_net_set(&rdev->wiphy, net); |
| 176 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 177 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
| 178 | WARN_ON(err); |
| 179 | |
| 180 | return 0; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 181 | } |
| 182 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 183 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 184 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 185 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 186 | |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 187 | rdev_rfkill_poll(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 188 | } |
| 189 | |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 190 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
| 191 | struct wireless_dev *wdev) |
| 192 | { |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 193 | ASSERT_RTNL(); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 194 | |
| 195 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) |
| 196 | return; |
| 197 | |
| 198 | if (!wdev->p2p_started) |
| 199 | return; |
| 200 | |
| 201 | rdev_stop_p2p_device(rdev, wdev); |
| 202 | wdev->p2p_started = false; |
| 203 | |
| 204 | rdev->opencount--; |
| 205 | |
Johannes Berg | a617302 | 2014-01-22 11:14:18 +0200 | [diff] [blame] | 206 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
| 207 | if (WARN_ON(!rdev->scan_req->notified)) |
| 208 | rdev->scan_req->aborted = true; |
Johannes Berg | f9d15d1 | 2014-01-22 11:14:19 +0200 | [diff] [blame] | 209 | ___cfg80211_scan_done(rdev, false); |
Johannes Berg | a617302 | 2014-01-22 11:14:18 +0200 | [diff] [blame] | 210 | } |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 211 | } |
| 212 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 213 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 214 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 215 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 216 | struct wireless_dev *wdev; |
| 217 | |
| 218 | if (!blocked) |
| 219 | return 0; |
| 220 | |
| 221 | rtnl_lock(); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 222 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 223 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
| 224 | if (wdev->netdev) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 225 | dev_close(wdev->netdev); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 226 | continue; |
| 227 | } |
| 228 | /* otherwise, check iftype */ |
| 229 | switch (wdev->iftype) { |
| 230 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 231 | cfg80211_stop_p2p_device(rdev, wdev); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 232 | break; |
| 233 | default: |
| 234 | break; |
| 235 | } |
| 236 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 237 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 238 | rtnl_unlock(); |
| 239 | |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 244 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 245 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 246 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 247 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 248 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 249 | } |
| 250 | |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 251 | static void cfg80211_event_work(struct work_struct *work) |
| 252 | { |
| 253 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 254 | |
| 255 | rdev = container_of(work, struct cfg80211_registered_device, |
| 256 | event_work); |
| 257 | |
| 258 | rtnl_lock(); |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 259 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 260 | rtnl_unlock(); |
| 261 | } |
| 262 | |
Johannes Berg | 78f22b6 | 2014-03-24 17:57:27 +0100 | [diff] [blame] | 263 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
| 264 | { |
| 265 | struct cfg80211_iface_destroy *item; |
| 266 | |
| 267 | ASSERT_RTNL(); |
| 268 | |
| 269 | spin_lock_irq(&rdev->destroy_list_lock); |
| 270 | while ((item = list_first_entry_or_null(&rdev->destroy_list, |
| 271 | struct cfg80211_iface_destroy, |
| 272 | list))) { |
| 273 | struct wireless_dev *wdev, *tmp; |
| 274 | u32 nlportid = item->nlportid; |
| 275 | |
| 276 | list_del(&item->list); |
| 277 | kfree(item); |
| 278 | spin_unlock_irq(&rdev->destroy_list_lock); |
| 279 | |
| 280 | list_for_each_entry_safe(wdev, tmp, &rdev->wdev_list, list) { |
| 281 | if (nlportid == wdev->owner_nlportid) |
| 282 | rdev_del_virtual_intf(rdev, wdev); |
| 283 | } |
| 284 | |
| 285 | spin_lock_irq(&rdev->destroy_list_lock); |
| 286 | } |
| 287 | spin_unlock_irq(&rdev->destroy_list_lock); |
| 288 | } |
| 289 | |
| 290 | static void cfg80211_destroy_iface_wk(struct work_struct *work) |
| 291 | { |
| 292 | struct cfg80211_registered_device *rdev; |
| 293 | |
| 294 | rdev = container_of(work, struct cfg80211_registered_device, |
| 295 | destroy_work); |
| 296 | |
| 297 | rtnl_lock(); |
| 298 | cfg80211_destroy_ifaces(rdev); |
| 299 | rtnl_unlock(); |
| 300 | } |
| 301 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 302 | /* exported functions */ |
| 303 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 304 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 305 | { |
Johannes Berg | 73810b7 | 2013-05-08 21:49:02 +0200 | [diff] [blame] | 306 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 307 | |
| 308 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 309 | int alloc_size; |
| 310 | |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 311 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 312 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 313 | WARN_ON(ops->connect && !ops->disconnect); |
| 314 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 315 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 316 | WARN_ON(ops->add_station && !ops->del_station); |
| 317 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 318 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 319 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 320 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 321 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 322 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 323 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 324 | return NULL; |
| 325 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 326 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 327 | |
Johannes Berg | 73810b7 | 2013-05-08 21:49:02 +0200 | [diff] [blame] | 328 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 329 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 330 | if (unlikely(rdev->wiphy_idx < 0)) { |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 331 | /* ugh, wrapped! */ |
Johannes Berg | 73810b7 | 2013-05-08 21:49:02 +0200 | [diff] [blame] | 332 | atomic_dec(&wiphy_counter); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 333 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 334 | return NULL; |
| 335 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 336 | |
Johannes Berg | 9b88196 | 2013-06-04 22:23:36 +0200 | [diff] [blame] | 337 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
| 338 | rdev->wiphy_idx--; |
| 339 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 340 | /* give it a proper name */ |
| 341 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
| 342 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 343 | INIT_LIST_HEAD(&rdev->wdev_list); |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 344 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
| 345 | spin_lock_init(&rdev->beacon_registrations_lock); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 346 | spin_lock_init(&rdev->bss_lock); |
| 347 | INIT_LIST_HEAD(&rdev->bss_list); |
| 348 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 349 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 350 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
| 351 | cfg80211_dfs_channels_update_work); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 352 | #ifdef CONFIG_CFG80211_WEXT |
| 353 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 354 | #endif |
| 355 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 356 | device_initialize(&rdev->wiphy.dev); |
| 357 | rdev->wiphy.dev.class = &ieee80211_class; |
| 358 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 359 | |
Johannes Berg | 78f22b6 | 2014-03-24 17:57:27 +0100 | [diff] [blame] | 360 | INIT_LIST_HEAD(&rdev->destroy_list); |
| 361 | spin_lock_init(&rdev->destroy_list_lock); |
| 362 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); |
| 363 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 364 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 365 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 366 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 367 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 368 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 369 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 370 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 371 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 372 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 373 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 374 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 375 | if (!rdev->rfkill) { |
| 376 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 377 | return NULL; |
| 378 | } |
| 379 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 380 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 381 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 382 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 383 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 384 | init_waitqueue_head(&rdev->dev_wait); |
| 385 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 386 | /* |
| 387 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 388 | * Fragmentation and RTS threshold are disabled by default with the |
| 389 | * special -1 value. |
| 390 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 391 | rdev->wiphy.retry_short = 7; |
| 392 | rdev->wiphy.retry_long = 4; |
| 393 | rdev->wiphy.frag_threshold = (u32) -1; |
| 394 | rdev->wiphy.rts_threshold = (u32) -1; |
Lukáš Turek | 81077e8 | 2009-12-21 22:50:47 +0100 | [diff] [blame] | 395 | rdev->wiphy.coverage_class = 0; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 396 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 397 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 398 | } |
| 399 | EXPORT_SYMBOL(wiphy_new); |
| 400 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 401 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
| 402 | { |
| 403 | const struct ieee80211_iface_combination *c; |
| 404 | int i, j; |
| 405 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 406 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
| 407 | u32 cnt = 0; |
| 408 | u16 all_iftypes = 0; |
| 409 | |
| 410 | c = &wiphy->iface_combinations[i]; |
| 411 | |
Simon Wunderlich | 11c4a07 | 2013-01-08 14:04:07 +0100 | [diff] [blame] | 412 | /* |
| 413 | * Combinations with just one interface aren't real, |
| 414 | * however we make an exception for DFS. |
| 415 | */ |
| 416 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 417 | return -EINVAL; |
| 418 | |
| 419 | /* Need at least one channel */ |
| 420 | if (WARN_ON(!c->num_different_channels)) |
| 421 | return -EINVAL; |
| 422 | |
Michal Kazior | d4e50c5 | 2012-06-29 12:47:07 +0200 | [diff] [blame] | 423 | /* |
| 424 | * Put a sane limit on maximum number of different |
| 425 | * channels to simplify channel accounting code. |
| 426 | */ |
| 427 | if (WARN_ON(c->num_different_channels > |
| 428 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) |
| 429 | return -EINVAL; |
| 430 | |
Simon Wunderlich | 11c4a07 | 2013-01-08 14:04:07 +0100 | [diff] [blame] | 431 | /* DFS only works on one channel. */ |
| 432 | if (WARN_ON(c->radar_detect_widths && |
| 433 | (c->num_different_channels > 1))) |
| 434 | return -EINVAL; |
| 435 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 436 | if (WARN_ON(!c->n_limits)) |
| 437 | return -EINVAL; |
| 438 | |
| 439 | for (j = 0; j < c->n_limits; j++) { |
| 440 | u16 types = c->limits[j].types; |
| 441 | |
Luciano Coelho | b6a5501 | 2014-02-27 11:07:21 +0200 | [diff] [blame^] | 442 | /* interface types shouldn't overlap */ |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 443 | if (WARN_ON(types & all_iftypes)) |
| 444 | return -EINVAL; |
| 445 | all_iftypes |= types; |
| 446 | |
| 447 | if (WARN_ON(!c->limits[j].max)) |
| 448 | return -EINVAL; |
| 449 | |
| 450 | /* Shouldn't list software iftypes in combinations! */ |
| 451 | if (WARN_ON(wiphy->software_iftypes & types)) |
| 452 | return -EINVAL; |
| 453 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 454 | /* Only a single P2P_DEVICE can be allowed */ |
| 455 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && |
| 456 | c->limits[j].max > 1)) |
| 457 | return -EINVAL; |
| 458 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 459 | cnt += c->limits[j].max; |
| 460 | /* |
| 461 | * Don't advertise an unsupported type |
| 462 | * in a combination. |
| 463 | */ |
| 464 | if (WARN_ON((wiphy->interface_modes & types) != types)) |
| 465 | return -EINVAL; |
| 466 | } |
| 467 | |
| 468 | /* You can't even choose that many! */ |
| 469 | if (WARN_ON(cnt < c->max_interfaces)) |
| 470 | return -EINVAL; |
| 471 | } |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 476 | int wiphy_register(struct wiphy *wiphy) |
| 477 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 478 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 479 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 480 | enum ieee80211_band band; |
| 481 | struct ieee80211_supported_band *sband; |
| 482 | bool have_band = false; |
| 483 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 484 | u16 ifmodes = wiphy->interface_modes; |
| 485 | |
Simon Wunderlich | dda444d | 2013-11-26 16:07:26 +0100 | [diff] [blame] | 486 | /* |
| 487 | * There are major locking problems in nl80211/mac80211 for CSA, |
| 488 | * disable for all drivers until this has been reworked. |
| 489 | */ |
| 490 | wiphy->flags &= ~WIPHY_FLAG_HAS_CHANNEL_SWITCH; |
| 491 | |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 492 | #ifdef CONFIG_PM |
Johannes Berg | 964dc9e | 2013-06-03 17:25:34 +0200 | [diff] [blame] | 493 | if (WARN_ON(wiphy->wowlan && |
| 494 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && |
| 495 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) |
| 496 | return -EINVAL; |
| 497 | if (WARN_ON(wiphy->wowlan && |
| 498 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && |
| 499 | !wiphy->wowlan->tcp)) |
Johannes Berg | 77dbbb1 | 2011-07-13 10:48:55 +0200 | [diff] [blame] | 500 | return -EINVAL; |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 501 | #endif |
Johannes Berg | 77dbbb1 | 2011-07-13 10:48:55 +0200 | [diff] [blame] | 502 | |
Amitkumar Karwar | be29b99 | 2013-06-28 11:51:26 -0700 | [diff] [blame] | 503 | if (WARN_ON(wiphy->coalesce && |
| 504 | (!wiphy->coalesce->n_rules || |
| 505 | !wiphy->coalesce->n_patterns) && |
| 506 | (!wiphy->coalesce->pattern_min_len || |
| 507 | wiphy->coalesce->pattern_min_len > |
| 508 | wiphy->coalesce->pattern_max_len))) |
| 509 | return -EINVAL; |
| 510 | |
Johannes Berg | 562a748 | 2011-11-07 12:39:33 +0100 | [diff] [blame] | 511 | if (WARN_ON(wiphy->ap_sme_capa && |
| 512 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) |
| 513 | return -EINVAL; |
| 514 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 515 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
| 516 | return -EINVAL; |
| 517 | |
| 518 | if (WARN_ON(wiphy->addresses && |
| 519 | !is_zero_ether_addr(wiphy->perm_addr) && |
| 520 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, |
| 521 | ETH_ALEN))) |
| 522 | return -EINVAL; |
| 523 | |
Vasanthakumar Thiagarajan | 77765ea | 2013-01-18 11:18:45 +0530 | [diff] [blame] | 524 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
| 525 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || |
| 526 | !rdev->ops->set_mac_acl))) |
| 527 | return -EINVAL; |
| 528 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 529 | if (wiphy->addresses) |
| 530 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); |
| 531 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 532 | /* sanity check ifmodes */ |
| 533 | WARN_ON(!ifmodes); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 534 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 535 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 536 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 537 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 538 | res = wiphy_verify_combinations(wiphy); |
| 539 | if (res) |
| 540 | return res; |
| 541 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 542 | /* sanity check supported bands/channels */ |
| 543 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 544 | sband = wiphy->bands[band]; |
| 545 | if (!sband) |
| 546 | continue; |
| 547 | |
| 548 | sband->band = band; |
Vladimir Kondratiev | 3a0c52a | 2012-07-02 09:32:32 +0300 | [diff] [blame] | 549 | if (WARN_ON(!sband->n_channels)) |
| 550 | return -EINVAL; |
| 551 | /* |
| 552 | * on 60gHz band, there are no legacy rates, so |
| 553 | * n_bitrates is 0 |
| 554 | */ |
| 555 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && |
| 556 | !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 557 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 558 | |
| 559 | /* |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 560 | * Since cfg80211_disable_40mhz_24ghz is global, we can |
| 561 | * modify the sband's ht data even if the driver uses a |
| 562 | * global structure for that. |
| 563 | */ |
| 564 | if (cfg80211_disable_40mhz_24ghz && |
| 565 | band == IEEE80211_BAND_2GHZ && |
| 566 | sband->ht_cap.ht_supported) { |
| 567 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| 568 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 569 | } |
| 570 | |
| 571 | /* |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 572 | * Since we use a u32 for rate bitmaps in |
| 573 | * ieee80211_get_response_rate, we cannot |
| 574 | * have more than 32 legacy rates. |
| 575 | */ |
| 576 | if (WARN_ON(sband->n_bitrates > 32)) |
| 577 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 578 | |
| 579 | for (i = 0; i < sband->n_channels; i++) { |
| 580 | sband->channels[i].orig_flags = |
| 581 | sband->channels[i].flags; |
Felix Fietkau | c4a9faf | 2012-10-17 13:56:19 +0200 | [diff] [blame] | 582 | sband->channels[i].orig_mag = INT_MAX; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 583 | sband->channels[i].orig_mpwr = |
| 584 | sband->channels[i].max_power; |
| 585 | sband->channels[i].band = band; |
| 586 | } |
| 587 | |
| 588 | have_band = true; |
| 589 | } |
| 590 | |
| 591 | if (!have_band) { |
| 592 | WARN_ON(1); |
| 593 | return -EINVAL; |
| 594 | } |
| 595 | |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 596 | #ifdef CONFIG_PM |
Johannes Berg | 964dc9e | 2013-06-03 17:25:34 +0200 | [diff] [blame] | 597 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
| 598 | (!rdev->wiphy.wowlan->pattern_min_len || |
| 599 | rdev->wiphy.wowlan->pattern_min_len > |
| 600 | rdev->wiphy.wowlan->pattern_max_len))) |
| 601 | return -EINVAL; |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 602 | #endif |
Johannes Berg | ff1b6e6 | 2011-05-04 15:37:28 +0200 | [diff] [blame] | 603 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 604 | /* check and set up bitrates */ |
| 605 | ieee80211_set_bitrate_flags(wiphy); |
| 606 | |
Johannes Berg | 00c3a6e | 2013-10-26 17:14:38 +0200 | [diff] [blame] | 607 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
| 608 | |
Johannes Berg | aa5f66d | 2013-09-26 20:03:45 +0200 | [diff] [blame] | 609 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 610 | res = device_add(&rdev->wiphy.dev); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 611 | if (res) { |
Johannes Berg | aa5f66d | 2013-09-26 20:03:45 +0200 | [diff] [blame] | 612 | rtnl_unlock(); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 613 | return res; |
| 614 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 615 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 616 | /* set up regulatory info */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 617 | wiphy_regulatory_register(wiphy); |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 618 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 619 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 620 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 621 | |
| 622 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 623 | rdev->wiphy.debugfsdir = |
| 624 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 625 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 626 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 627 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 628 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 629 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 630 | struct regulatory_request request; |
| 631 | |
| 632 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 633 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 634 | request.alpha2[0] = '9'; |
| 635 | request.alpha2[1] = '9'; |
| 636 | |
| 637 | nl80211_send_reg_change_event(&request); |
| 638 | } |
| 639 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 640 | cfg80211_debugfs_rdev_add(rdev); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 641 | |
Stanislaw Gruszka | ecb4433 | 2011-08-12 14:00:59 +0200 | [diff] [blame] | 642 | rdev->wiphy.registered = true; |
| 643 | rtnl_unlock(); |
Johannes Berg | aa5f66d | 2013-09-26 20:03:45 +0200 | [diff] [blame] | 644 | |
| 645 | res = rfkill_register(rdev->rfkill); |
| 646 | if (res) { |
| 647 | rfkill_destroy(rdev->rfkill); |
| 648 | rdev->rfkill = NULL; |
| 649 | wiphy_unregister(&rdev->wiphy); |
| 650 | return res; |
| 651 | } |
| 652 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 653 | return 0; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 654 | } |
| 655 | EXPORT_SYMBOL(wiphy_register); |
| 656 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 657 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 658 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 659 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 660 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 661 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 662 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 663 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 664 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 665 | } |
| 666 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 667 | |
| 668 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 669 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 670 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 671 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 672 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 673 | } |
| 674 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 675 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 676 | void wiphy_unregister(struct wiphy *wiphy) |
| 677 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 678 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 679 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 680 | wait_event(rdev->dev_wait, ({ |
| 681 | int __count; |
| 682 | rtnl_lock(); |
| 683 | __count = rdev->opencount; |
| 684 | rtnl_unlock(); |
| 685 | __count == 0; })); |
| 686 | |
Johannes Berg | aa5f66d | 2013-09-26 20:03:45 +0200 | [diff] [blame] | 687 | if (rdev->rfkill) |
| 688 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 256c90d | 2013-06-04 19:21:08 +0200 | [diff] [blame] | 689 | |
Stanislaw Gruszka | ecb4433 | 2011-08-12 14:00:59 +0200 | [diff] [blame] | 690 | rtnl_lock(); |
| 691 | rdev->wiphy.registered = false; |
Stanislaw Gruszka | ecb4433 | 2011-08-12 14:00:59 +0200 | [diff] [blame] | 692 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 693 | BUG_ON(!list_empty(&rdev->wdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 694 | |
| 695 | /* |
| 696 | * First remove the hardware from everywhere, this makes |
| 697 | * it impossible to find from userspace. |
| 698 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 699 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 700 | list_del_rcu(&rdev->list); |
| 701 | synchronize_rcu(); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 702 | |
| 703 | /* |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 704 | * If this device got a regulatory hint tell core its |
| 705 | * free to listen now to a new shiny device regulatory hint |
| 706 | */ |
| 707 | wiphy_regulatory_deregister(wiphy); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 708 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 709 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 710 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 711 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 712 | rtnl_unlock(); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 713 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 714 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 715 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 716 | flush_work(&rdev->event_work); |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 717 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
Johannes Berg | 78f22b6 | 2014-03-24 17:57:27 +0100 | [diff] [blame] | 718 | flush_work(&rdev->destroy_work); |
Johannes Berg | 6d52563 | 2012-04-04 15:05:25 +0200 | [diff] [blame] | 719 | |
Johannes Berg | 6abb9cb | 2013-05-15 09:30:07 +0200 | [diff] [blame] | 720 | #ifdef CONFIG_PM |
| 721 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 722 | rdev_set_wakeup(rdev, false); |
Johannes Berg | 6abb9cb | 2013-05-15 09:30:07 +0200 | [diff] [blame] | 723 | #endif |
Johannes Berg | 6d52563 | 2012-04-04 15:05:25 +0200 | [diff] [blame] | 724 | cfg80211_rdev_free_wowlan(rdev); |
Amitkumar Karwar | be29b99 | 2013-06-28 11:51:26 -0700 | [diff] [blame] | 725 | cfg80211_rdev_free_coalesce(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 726 | } |
| 727 | EXPORT_SYMBOL(wiphy_unregister); |
| 728 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 729 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 730 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 731 | struct cfg80211_internal_bss *scan, *tmp; |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 732 | struct cfg80211_beacon_registration *reg, *treg; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 733 | rfkill_destroy(rdev->rfkill); |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 734 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
| 735 | list_del(®->list); |
| 736 | kfree(reg); |
| 737 | } |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 738 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 5b112d3 | 2013-02-01 01:49:58 +0100 | [diff] [blame] | 739 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 740 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | void wiphy_free(struct wiphy *wiphy) |
| 744 | { |
| 745 | put_device(&wiphy->dev); |
| 746 | } |
| 747 | EXPORT_SYMBOL(wiphy_free); |
| 748 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 749 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 750 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 751 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 752 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 753 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 754 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 755 | } |
| 756 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 757 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 758 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
| 759 | { |
| 760 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
| 761 | |
| 762 | ASSERT_RTNL(); |
| 763 | |
| 764 | if (WARN_ON(wdev->netdev)) |
| 765 | return; |
| 766 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 767 | list_del_rcu(&wdev->list); |
| 768 | rdev->devlist_generation++; |
| 769 | |
| 770 | switch (wdev->iftype) { |
| 771 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 772 | cfg80211_stop_p2p_device(rdev, wdev); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 773 | break; |
| 774 | default: |
| 775 | WARN_ON_ONCE(1); |
| 776 | break; |
| 777 | } |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 778 | } |
| 779 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
| 780 | |
Johannes Berg | f1e3d55 | 2014-01-21 00:00:56 +0100 | [diff] [blame] | 781 | static const struct device_type wiphy_type = { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 782 | .name = "wlan", |
| 783 | }; |
| 784 | |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 785 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
| 786 | enum nl80211_iftype iftype, int num) |
| 787 | { |
Johannes Berg | c5a7e58 | 2012-07-04 13:28:18 +0200 | [diff] [blame] | 788 | ASSERT_RTNL(); |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 789 | |
| 790 | rdev->num_running_ifaces += num; |
| 791 | if (iftype == NL80211_IFTYPE_MONITOR) |
| 792 | rdev->num_running_monitor_ifaces += num; |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 793 | } |
| 794 | |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 795 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 796 | struct wireless_dev *wdev) |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 797 | { |
| 798 | struct net_device *dev = wdev->netdev; |
| 799 | |
Barak Bercovitz | 24d584d | 2013-12-05 11:21:26 +0200 | [diff] [blame] | 800 | ASSERT_RTNL(); |
| 801 | |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 802 | switch (wdev->iftype) { |
| 803 | case NL80211_IFTYPE_ADHOC: |
| 804 | cfg80211_leave_ibss(rdev, dev, true); |
| 805 | break; |
| 806 | case NL80211_IFTYPE_P2P_CLIENT: |
| 807 | case NL80211_IFTYPE_STATION: |
Barak Bercovitz | 24d584d | 2013-12-05 11:21:26 +0200 | [diff] [blame] | 808 | if (rdev->sched_scan_req && dev == rdev->sched_scan_req->dev) |
| 809 | __cfg80211_stop_sched_scan(rdev, false); |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 810 | |
| 811 | wdev_lock(wdev); |
| 812 | #ifdef CONFIG_CFG80211_WEXT |
| 813 | kfree(wdev->wext.ie); |
| 814 | wdev->wext.ie = NULL; |
| 815 | wdev->wext.ie_len = 0; |
| 816 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
| 817 | #endif |
Johannes Berg | 83739b0 | 2013-05-15 17:44:01 +0200 | [diff] [blame] | 818 | cfg80211_disconnect(rdev, dev, |
| 819 | WLAN_REASON_DEAUTH_LEAVING, true); |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 820 | wdev_unlock(wdev); |
| 821 | break; |
| 822 | case NL80211_IFTYPE_MESH_POINT: |
| 823 | cfg80211_leave_mesh(rdev, dev); |
| 824 | break; |
| 825 | case NL80211_IFTYPE_AP: |
Johannes Berg | 74418ed | 2013-07-30 10:11:25 +0200 | [diff] [blame] | 826 | case NL80211_IFTYPE_P2P_GO: |
Ilan Peer | 7c8d5e0 | 2014-02-25 15:33:38 +0200 | [diff] [blame] | 827 | cfg80211_stop_ap(rdev, dev, true); |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 828 | break; |
| 829 | default: |
| 830 | break; |
| 831 | } |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 832 | } |
| 833 | |
Cristian Chilipirea | c4f6084 | 2012-05-08 12:38:53 +0300 | [diff] [blame] | 834 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 835 | unsigned long state, void *ptr) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 836 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 837 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 838 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 839 | struct cfg80211_registered_device *rdev; |
| 840 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 841 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 842 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 843 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 844 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 845 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 846 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 847 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 848 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 849 | case NETDEV_POST_INIT: |
| 850 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 851 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 852 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 853 | /* |
| 854 | * NB: cannot take rdev->mtx here because this may be |
| 855 | * called within code protected by it when interfaces |
| 856 | * are added with nl80211. |
| 857 | */ |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 858 | mutex_init(&wdev->mtx); |
| 859 | INIT_LIST_HEAD(&wdev->event_list); |
| 860 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 861 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
| 862 | spin_lock_init(&wdev->mgmt_registrations_lock); |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 863 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 864 | wdev->identifier = ++rdev->wdev_id; |
| 865 | list_add_rcu(&wdev->list, &rdev->wdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 866 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 867 | /* can only change netns with wiphy */ |
| 868 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 869 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 870 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 871 | "phy80211")) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 872 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 873 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 874 | wdev->netdev = dev; |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 875 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 876 | wdev->wext.default_key = -1; |
| 877 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 878 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 879 | #endif |
| 880 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 881 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 882 | wdev->ps = true; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 883 | else |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 884 | wdev->ps = false; |
Juuso Oikarinen | 9043f3b | 2010-04-27 12:47:41 +0300 | [diff] [blame] | 885 | /* allow mac80211 to determine the timeout */ |
| 886 | wdev->ps_timeout = -1; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 887 | |
Stanislaw Gruszka | d07d750 | 2013-01-10 23:19:10 +0000 | [diff] [blame] | 888 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 889 | |
| 890 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 891 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 892 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
| 893 | dev->priv_flags |= IFF_DONT_BRIDGE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 894 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 895 | case NETDEV_GOING_DOWN: |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 896 | cfg80211_leave(rdev, wdev); |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 897 | break; |
| 898 | case NETDEV_DOWN: |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 899 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
Johannes Berg | a617302 | 2014-01-22 11:14:18 +0200 | [diff] [blame] | 900 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
| 901 | if (WARN_ON(!rdev->scan_req->notified)) |
| 902 | rdev->scan_req->aborted = true; |
Johannes Berg | f9d15d1 | 2014-01-22 11:14:19 +0200 | [diff] [blame] | 903 | ___cfg80211_scan_done(rdev, false); |
Johannes Berg | a617302 | 2014-01-22 11:14:18 +0200 | [diff] [blame] | 904 | } |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 905 | |
| 906 | if (WARN_ON(rdev->sched_scan_req && |
| 907 | rdev->sched_scan_req->dev == wdev->netdev)) { |
| 908 | __cfg80211_stop_sched_scan(rdev, false); |
| 909 | } |
| 910 | |
| 911 | rdev->opencount--; |
| 912 | wake_up(&rdev->dev_wait); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 913 | break; |
| 914 | case NETDEV_UP: |
Johannes Berg | 4290cb4 | 2012-07-12 22:19:48 +0200 | [diff] [blame] | 915 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 916 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 917 | switch (wdev->iftype) { |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 918 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 919 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 920 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 921 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 922 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 923 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 924 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 925 | #endif |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 926 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 927 | case NL80211_IFTYPE_MESH_POINT: |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 928 | { |
| 929 | /* backward compat code... */ |
| 930 | struct mesh_setup setup; |
| 931 | memcpy(&setup, &default_mesh_setup, |
| 932 | sizeof(setup)); |
| 933 | /* back compat only needed for mesh_id */ |
| 934 | setup.mesh_id = wdev->ssid; |
| 935 | setup.mesh_id_len = wdev->mesh_id_up_len; |
| 936 | if (wdev->mesh_id_up_len) |
| 937 | __cfg80211_join_mesh(rdev, dev, |
| 938 | &setup, |
| 939 | &default_mesh_config); |
| 940 | break; |
| 941 | } |
| 942 | #endif |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 943 | default: |
| 944 | break; |
| 945 | } |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 946 | wdev_unlock(wdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 947 | rdev->opencount++; |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 948 | |
| 949 | /* |
| 950 | * Configure power management to the driver here so that its |
| 951 | * correctly set also after interface type changes etc. |
| 952 | */ |
Eliad Peller | 5966f2d | 2011-07-19 12:57:13 +0300 | [diff] [blame] | 953 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
| 954 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 955 | rdev->ops->set_power_mgmt) |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 956 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
| 957 | wdev->ps_timeout)) { |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 958 | /* assume this means it's off */ |
| 959 | wdev->ps = false; |
| 960 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 961 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 962 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 963 | /* |
Johannes Berg | e40cbdac | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 964 | * It is possible to get NETDEV_UNREGISTER |
| 965 | * multiple times. To detect that, check |
| 966 | * that the interface is still on the list |
| 967 | * of registered interfaces, and only then |
| 968 | * remove and clean it up. |
| 969 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 970 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 971 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 972 | list_del_rcu(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 973 | rdev->devlist_generation++; |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 974 | cfg80211_mlme_purge_registrations(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 975 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbdac | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 976 | kfree(wdev->wext.keys); |
| 977 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 978 | } |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 979 | /* |
| 980 | * synchronise (so that we won't find this netdev |
| 981 | * from other code any more) and then clear the list |
| 982 | * head so that the above code can safely check for |
| 983 | * !list_empty() to avoid double-cleanup. |
| 984 | */ |
| 985 | synchronize_rcu(); |
| 986 | INIT_LIST_HEAD(&wdev->list); |
Daniel Drake | 1f6fc43 | 2012-08-02 18:41:48 +0100 | [diff] [blame] | 987 | /* |
| 988 | * Ensure that all events have been processed and |
| 989 | * freed. |
| 990 | */ |
| 991 | cfg80211_process_wdev_events(wdev); |
Ben Greear | f9bef3d | 2013-06-19 14:06:26 -0700 | [diff] [blame] | 992 | |
| 993 | if (WARN_ON(wdev->current_bss)) { |
| 994 | cfg80211_unhold_bss(wdev->current_bss); |
| 995 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
| 996 | wdev->current_bss = NULL; |
| 997 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 998 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 999 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 1000 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 1001 | return notifier_from_errno(-EOPNOTSUPP); |
Luciano Coelho | b6a5501 | 2014-02-27 11:07:21 +0200 | [diff] [blame^] | 1002 | if (rfkill_blocked(rdev->rfkill)) |
| 1003 | return notifier_from_errno(-ERFKILL); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1004 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1005 | } |
| 1006 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1007 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1008 | } |
| 1009 | |
| 1010 | static struct notifier_block cfg80211_netdev_notifier = { |
| 1011 | .notifier_call = cfg80211_netdev_notifier_call, |
| 1012 | }; |
| 1013 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1014 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 1015 | { |
| 1016 | struct cfg80211_registered_device *rdev; |
| 1017 | |
| 1018 | rtnl_lock(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1019 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1020 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 1021 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 1022 | } |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1023 | rtnl_unlock(); |
| 1024 | } |
| 1025 | |
| 1026 | static struct pernet_operations cfg80211_pernet_ops = { |
| 1027 | .exit = cfg80211_pernet_exit, |
| 1028 | }; |
| 1029 | |
| 1030 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1031 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1032 | int err; |
| 1033 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1034 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 1035 | if (err) |
| 1036 | goto out_fail_pernet; |
| 1037 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1038 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1039 | if (err) |
| 1040 | goto out_fail_sysfs; |
| 1041 | |
| 1042 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1043 | if (err) |
| 1044 | goto out_fail_notifier; |
| 1045 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1046 | err = nl80211_init(); |
| 1047 | if (err) |
| 1048 | goto out_fail_nl80211; |
| 1049 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1050 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 1051 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1052 | err = regulatory_init(); |
| 1053 | if (err) |
| 1054 | goto out_fail_reg; |
| 1055 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1056 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
Wei Yongjun | f00f188 | 2013-03-20 20:22:54 +0800 | [diff] [blame] | 1057 | if (!cfg80211_wq) { |
| 1058 | err = -ENOMEM; |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1059 | goto out_fail_wq; |
Wei Yongjun | f00f188 | 2013-03-20 20:22:54 +0800 | [diff] [blame] | 1060 | } |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1061 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1062 | return 0; |
| 1063 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1064 | out_fail_wq: |
| 1065 | regulatory_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1066 | out_fail_reg: |
| 1067 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1068 | out_fail_nl80211: |
| 1069 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1070 | out_fail_notifier: |
| 1071 | wiphy_sysfs_exit(); |
| 1072 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1073 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 1074 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1075 | return err; |
| 1076 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 1077 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1078 | |
Uwe Kleine-König | f884e38 | 2010-06-18 09:38:54 +0200 | [diff] [blame] | 1079 | static void __exit cfg80211_exit(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1080 | { |
| 1081 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1082 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1083 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1084 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1085 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1086 | unregister_pernet_device(&cfg80211_pernet_ops); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1087 | destroy_workqueue(cfg80211_wq); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1088 | } |
| 1089 | module_exit(cfg80211_exit); |