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 | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 39 | /* RCU-protected (and cfg80211_mutex 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 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 43 | DEFINE_MUTEX(cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 44 | |
| 45 | /* for debugfs */ |
| 46 | static struct dentry *ieee80211_debugfs_dir; |
| 47 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 48 | /* for the cleanup, scan and event works */ |
| 49 | struct workqueue_struct *cfg80211_wq; |
| 50 | |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 51 | static bool cfg80211_disable_40mhz_24ghz; |
| 52 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); |
| 53 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, |
| 54 | "Disable 40MHz support in the 2.4GHz band"); |
| 55 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 56 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 57 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 58 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 59 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 60 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 61 | assert_cfg80211_lock(); |
| 62 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 63 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 64 | if (rdev->wiphy_idx == wiphy_idx) { |
| 65 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 66 | break; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | return result; |
| 71 | } |
| 72 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 73 | int get_wiphy_idx(struct wiphy *wiphy) |
| 74 | { |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 75 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| 76 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 77 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 78 | } |
| 79 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 80 | /* requires cfg80211_rdev_mutex to be held! */ |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 81 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
| 82 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 83 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 84 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 85 | assert_cfg80211_lock(); |
| 86 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 87 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 88 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 89 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 90 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 91 | } |
| 92 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 93 | struct cfg80211_registered_device * |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 94 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 95 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 96 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 97 | struct net_device *dev; |
| 98 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 99 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 100 | dev = dev_get_by_index(net, ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 101 | if (!dev) |
| 102 | goto out; |
| 103 | if (dev->ieee80211_ptr) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 104 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 105 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 106 | } else |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 107 | rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 108 | dev_put(dev); |
| 109 | out: |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 110 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 111 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 112 | } |
| 113 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 114 | /* requires cfg80211_mutex to be held */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 115 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 116 | char *newname) |
| 117 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 118 | struct cfg80211_registered_device *rdev2; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 119 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 120 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 121 | assert_cfg80211_lock(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 122 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 123 | /* prohibit calling the thing phy%d when %d is not its number */ |
| 124 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 125 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 126 | /* count number of places needed to print wiphy_idx */ |
| 127 | digits = 1; |
| 128 | while (wiphy_idx /= 10) |
| 129 | digits++; |
| 130 | /* |
| 131 | * deny the name if it is phy<idx> where <idx> is printed |
| 132 | * without leading zeroes. taken == strlen(newname) here |
| 133 | */ |
| 134 | if (taken == strlen(PHY_NAME) + digits) |
| 135 | return -EINVAL; |
| 136 | } |
| 137 | |
| 138 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 139 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 140 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 141 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 142 | |
| 143 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 144 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 145 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 146 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 147 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 148 | result = device_rename(&rdev->wiphy.dev, newname); |
| 149 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 150 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 151 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 152 | if (rdev->wiphy.debugfsdir && |
| 153 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 154 | rdev->wiphy.debugfsdir, |
| 155 | rdev->wiphy.debugfsdir->d_parent, |
| 156 | newname)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 157 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 158 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 159 | nl80211_notify_dev_rename(rdev); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 160 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 161 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 162 | } |
| 163 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 164 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 165 | struct net *net) |
| 166 | { |
| 167 | struct wireless_dev *wdev; |
| 168 | int err = 0; |
| 169 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 170 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 171 | return -EOPNOTSUPP; |
| 172 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 173 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 174 | if (!wdev->netdev) |
| 175 | continue; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 176 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 177 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 178 | if (err) |
| 179 | break; |
| 180 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 181 | } |
| 182 | |
| 183 | if (err) { |
| 184 | /* failed -- clean up to old netns */ |
| 185 | net = wiphy_net(&rdev->wiphy); |
| 186 | |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 187 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 188 | list) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 189 | if (!wdev->netdev) |
| 190 | continue; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 191 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 192 | err = dev_change_net_namespace(wdev->netdev, net, |
| 193 | "wlan%d"); |
| 194 | WARN_ON(err); |
| 195 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 196 | } |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 197 | |
| 198 | return err; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | wiphy_net_set(&rdev->wiphy, net); |
| 202 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 203 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
| 204 | WARN_ON(err); |
| 205 | |
| 206 | return 0; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 207 | } |
| 208 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 209 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 210 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 211 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 212 | |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 213 | rdev_rfkill_poll(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 214 | } |
| 215 | |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 216 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
| 217 | struct wireless_dev *wdev) |
| 218 | { |
| 219 | lockdep_assert_held(&rdev->devlist_mtx); |
| 220 | lockdep_assert_held(&rdev->sched_scan_mtx); |
| 221 | |
| 222 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) |
| 223 | return; |
| 224 | |
| 225 | if (!wdev->p2p_started) |
| 226 | return; |
| 227 | |
| 228 | rdev_stop_p2p_device(rdev, wdev); |
| 229 | wdev->p2p_started = false; |
| 230 | |
| 231 | rdev->opencount--; |
| 232 | |
| 233 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
| 234 | bool busy = work_busy(&rdev->scan_done_wk); |
| 235 | |
| 236 | /* |
| 237 | * If the work isn't pending or running (in which case it would |
| 238 | * be waiting for the lock we hold) the driver didn't properly |
| 239 | * cancel the scan when the interface was removed. In this case |
| 240 | * warn and leak the scan request object to not crash later. |
| 241 | */ |
| 242 | WARN_ON(!busy); |
| 243 | |
| 244 | rdev->scan_req->aborted = true; |
| 245 | ___cfg80211_scan_done(rdev, !busy); |
| 246 | } |
| 247 | } |
| 248 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 249 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 250 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 251 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 252 | struct wireless_dev *wdev; |
| 253 | |
| 254 | if (!blocked) |
| 255 | return 0; |
| 256 | |
| 257 | rtnl_lock(); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 258 | |
| 259 | /* read-only iteration need not hold the devlist_mtx */ |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 260 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 261 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
| 262 | if (wdev->netdev) { |
Johannes Berg | ba22fb5 | 2012-06-15 18:00:00 +0200 | [diff] [blame] | 263 | dev_close(wdev->netdev); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 264 | continue; |
| 265 | } |
| 266 | /* otherwise, check iftype */ |
| 267 | switch (wdev->iftype) { |
| 268 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 269 | /* but this requires it */ |
| 270 | mutex_lock(&rdev->devlist_mtx); |
| 271 | mutex_lock(&rdev->sched_scan_mtx); |
| 272 | cfg80211_stop_p2p_device(rdev, wdev); |
| 273 | mutex_unlock(&rdev->sched_scan_mtx); |
| 274 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 275 | break; |
| 276 | default: |
| 277 | break; |
| 278 | } |
| 279 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 280 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 281 | rtnl_unlock(); |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 287 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 288 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 289 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 290 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 291 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 292 | } |
| 293 | |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 294 | static void cfg80211_event_work(struct work_struct *work) |
| 295 | { |
| 296 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 297 | |
| 298 | rdev = container_of(work, struct cfg80211_registered_device, |
| 299 | event_work); |
| 300 | |
| 301 | rtnl_lock(); |
| 302 | cfg80211_lock_rdev(rdev); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 303 | |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 304 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 305 | cfg80211_unlock_rdev(rdev); |
| 306 | rtnl_unlock(); |
| 307 | } |
| 308 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 309 | /* exported functions */ |
| 310 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 311 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 312 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 313 | static int wiphy_counter; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 314 | |
| 315 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 316 | int alloc_size; |
| 317 | |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 318 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 319 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 320 | WARN_ON(ops->connect && !ops->disconnect); |
| 321 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 322 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 323 | WARN_ON(ops->add_station && !ops->del_station); |
| 324 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 325 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 326 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 327 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 328 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 329 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 330 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 331 | return NULL; |
| 332 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 333 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 334 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 335 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 336 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 337 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 338 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 339 | if (unlikely(rdev->wiphy_idx < 0)) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 340 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 341 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 342 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 343 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 344 | return NULL; |
| 345 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 346 | |
Ben Greear | 5a254ff | 2010-09-27 09:07:26 -0700 | [diff] [blame] | 347 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 348 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 349 | /* give it a proper name */ |
| 350 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
| 351 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 352 | mutex_init(&rdev->mtx); |
| 353 | mutex_init(&rdev->devlist_mtx); |
Luciano Coelho | c10841c | 2011-06-30 08:32:41 +0300 | [diff] [blame] | 354 | mutex_init(&rdev->sched_scan_mtx); |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 355 | INIT_LIST_HEAD(&rdev->wdev_list); |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 356 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
| 357 | spin_lock_init(&rdev->beacon_registrations_lock); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 358 | spin_lock_init(&rdev->bss_lock); |
| 359 | INIT_LIST_HEAD(&rdev->bss_list); |
| 360 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 361 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 362 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
| 363 | cfg80211_dfs_channels_update_work); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 364 | #ifdef CONFIG_CFG80211_WEXT |
| 365 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 366 | #endif |
| 367 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 368 | device_initialize(&rdev->wiphy.dev); |
| 369 | rdev->wiphy.dev.class = &ieee80211_class; |
| 370 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 371 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 372 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 373 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 374 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 375 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 376 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 377 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 378 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 379 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 380 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 381 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 382 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 383 | if (!rdev->rfkill) { |
| 384 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 385 | return NULL; |
| 386 | } |
| 387 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 388 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 389 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 390 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 391 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 392 | init_waitqueue_head(&rdev->dev_wait); |
| 393 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 394 | /* |
| 395 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 396 | * Fragmentation and RTS threshold are disabled by default with the |
| 397 | * special -1 value. |
| 398 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 399 | rdev->wiphy.retry_short = 7; |
| 400 | rdev->wiphy.retry_long = 4; |
| 401 | rdev->wiphy.frag_threshold = (u32) -1; |
| 402 | rdev->wiphy.rts_threshold = (u32) -1; |
Lukáš Turek | 81077e8 | 2009-12-21 22:50:47 +0100 | [diff] [blame] | 403 | rdev->wiphy.coverage_class = 0; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 404 | |
Johannes Berg | d0ae708 | 2013-02-27 15:08:28 +0100 | [diff] [blame] | 405 | rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH; |
Sam Leffler | 15d6030 | 2012-10-11 21:03:34 -0700 | [diff] [blame] | 406 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 407 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 408 | } |
| 409 | EXPORT_SYMBOL(wiphy_new); |
| 410 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 411 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
| 412 | { |
| 413 | const struct ieee80211_iface_combination *c; |
| 414 | int i, j; |
| 415 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 416 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
| 417 | u32 cnt = 0; |
| 418 | u16 all_iftypes = 0; |
| 419 | |
| 420 | c = &wiphy->iface_combinations[i]; |
| 421 | |
Simon Wunderlich | 11c4a07 | 2013-01-08 14:04:07 +0100 | [diff] [blame] | 422 | /* |
| 423 | * Combinations with just one interface aren't real, |
| 424 | * however we make an exception for DFS. |
| 425 | */ |
| 426 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 427 | return -EINVAL; |
| 428 | |
| 429 | /* Need at least one channel */ |
| 430 | if (WARN_ON(!c->num_different_channels)) |
| 431 | return -EINVAL; |
| 432 | |
Michal Kazior | d4e50c5 | 2012-06-29 12:47:07 +0200 | [diff] [blame] | 433 | /* |
| 434 | * Put a sane limit on maximum number of different |
| 435 | * channels to simplify channel accounting code. |
| 436 | */ |
| 437 | if (WARN_ON(c->num_different_channels > |
| 438 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) |
| 439 | return -EINVAL; |
| 440 | |
Simon Wunderlich | 11c4a07 | 2013-01-08 14:04:07 +0100 | [diff] [blame] | 441 | /* DFS only works on one channel. */ |
| 442 | if (WARN_ON(c->radar_detect_widths && |
| 443 | (c->num_different_channels > 1))) |
| 444 | return -EINVAL; |
| 445 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 446 | if (WARN_ON(!c->n_limits)) |
| 447 | return -EINVAL; |
| 448 | |
| 449 | for (j = 0; j < c->n_limits; j++) { |
| 450 | u16 types = c->limits[j].types; |
| 451 | |
| 452 | /* |
| 453 | * interface types shouldn't overlap, this is |
| 454 | * used in cfg80211_can_change_interface() |
| 455 | */ |
| 456 | if (WARN_ON(types & all_iftypes)) |
| 457 | return -EINVAL; |
| 458 | all_iftypes |= types; |
| 459 | |
| 460 | if (WARN_ON(!c->limits[j].max)) |
| 461 | return -EINVAL; |
| 462 | |
| 463 | /* Shouldn't list software iftypes in combinations! */ |
| 464 | if (WARN_ON(wiphy->software_iftypes & types)) |
| 465 | return -EINVAL; |
| 466 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 467 | /* Only a single P2P_DEVICE can be allowed */ |
| 468 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && |
| 469 | c->limits[j].max > 1)) |
| 470 | return -EINVAL; |
| 471 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 472 | cnt += c->limits[j].max; |
| 473 | /* |
| 474 | * Don't advertise an unsupported type |
| 475 | * in a combination. |
| 476 | */ |
| 477 | if (WARN_ON((wiphy->interface_modes & types) != types)) |
| 478 | return -EINVAL; |
| 479 | } |
| 480 | |
| 481 | /* You can't even choose that many! */ |
| 482 | if (WARN_ON(cnt < c->max_interfaces)) |
| 483 | return -EINVAL; |
| 484 | } |
| 485 | |
| 486 | return 0; |
| 487 | } |
| 488 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 489 | int wiphy_register(struct wiphy *wiphy) |
| 490 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 491 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 492 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 493 | enum ieee80211_band band; |
| 494 | struct ieee80211_supported_band *sband; |
| 495 | bool have_band = false; |
| 496 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 497 | u16 ifmodes = wiphy->interface_modes; |
| 498 | |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 499 | #ifdef CONFIG_PM |
Johannes Berg | 77dbbb1 | 2011-07-13 10:48:55 +0200 | [diff] [blame] | 500 | if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && |
| 501 | !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) |
| 502 | return -EINVAL; |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 503 | #endif |
Johannes Berg | 77dbbb1 | 2011-07-13 10:48:55 +0200 | [diff] [blame] | 504 | |
Johannes Berg | 562a748 | 2011-11-07 12:39:33 +0100 | [diff] [blame] | 505 | if (WARN_ON(wiphy->ap_sme_capa && |
| 506 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) |
| 507 | return -EINVAL; |
| 508 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 509 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
| 510 | return -EINVAL; |
| 511 | |
| 512 | if (WARN_ON(wiphy->addresses && |
| 513 | !is_zero_ether_addr(wiphy->perm_addr) && |
| 514 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, |
| 515 | ETH_ALEN))) |
| 516 | return -EINVAL; |
| 517 | |
Vasanthakumar Thiagarajan | 77765ea | 2013-01-18 11:18:45 +0530 | [diff] [blame] | 518 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
| 519 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || |
| 520 | !rdev->ops->set_mac_acl))) |
| 521 | return -EINVAL; |
| 522 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 523 | if (wiphy->addresses) |
| 524 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); |
| 525 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 526 | /* sanity check ifmodes */ |
| 527 | WARN_ON(!ifmodes); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 528 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 529 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 530 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 531 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 532 | res = wiphy_verify_combinations(wiphy); |
| 533 | if (res) |
| 534 | return res; |
| 535 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 536 | /* sanity check supported bands/channels */ |
| 537 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 538 | sband = wiphy->bands[band]; |
| 539 | if (!sband) |
| 540 | continue; |
| 541 | |
| 542 | sband->band = band; |
Vladimir Kondratiev | 3a0c52a | 2012-07-02 09:32:32 +0300 | [diff] [blame] | 543 | if (WARN_ON(!sband->n_channels)) |
| 544 | return -EINVAL; |
| 545 | /* |
| 546 | * on 60gHz band, there are no legacy rates, so |
| 547 | * n_bitrates is 0 |
| 548 | */ |
| 549 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && |
| 550 | !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 551 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 552 | |
| 553 | /* |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 554 | * Since cfg80211_disable_40mhz_24ghz is global, we can |
| 555 | * modify the sband's ht data even if the driver uses a |
| 556 | * global structure for that. |
| 557 | */ |
| 558 | if (cfg80211_disable_40mhz_24ghz && |
| 559 | band == IEEE80211_BAND_2GHZ && |
| 560 | sband->ht_cap.ht_supported) { |
| 561 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| 562 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 563 | } |
| 564 | |
| 565 | /* |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 566 | * Since we use a u32 for rate bitmaps in |
| 567 | * ieee80211_get_response_rate, we cannot |
| 568 | * have more than 32 legacy rates. |
| 569 | */ |
| 570 | if (WARN_ON(sband->n_bitrates > 32)) |
| 571 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 572 | |
| 573 | for (i = 0; i < sband->n_channels; i++) { |
| 574 | sband->channels[i].orig_flags = |
| 575 | sband->channels[i].flags; |
Felix Fietkau | c4a9faf | 2012-10-17 13:56:19 +0200 | [diff] [blame] | 576 | sband->channels[i].orig_mag = INT_MAX; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 577 | sband->channels[i].orig_mpwr = |
| 578 | sband->channels[i].max_power; |
| 579 | sband->channels[i].band = band; |
| 580 | } |
| 581 | |
| 582 | have_band = true; |
| 583 | } |
| 584 | |
| 585 | if (!have_band) { |
| 586 | WARN_ON(1); |
| 587 | return -EINVAL; |
| 588 | } |
| 589 | |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 590 | #ifdef CONFIG_PM |
Johannes Berg | ff1b6e6 | 2011-05-04 15:37:28 +0200 | [diff] [blame] | 591 | if (rdev->wiphy.wowlan.n_patterns) { |
| 592 | if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len || |
| 593 | rdev->wiphy.wowlan.pattern_min_len > |
| 594 | rdev->wiphy.wowlan.pattern_max_len)) |
| 595 | return -EINVAL; |
| 596 | } |
Johannes Berg | dfb89c5 | 2012-06-27 09:23:48 +0200 | [diff] [blame] | 597 | #endif |
Johannes Berg | ff1b6e6 | 2011-05-04 15:37:28 +0200 | [diff] [blame] | 598 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 599 | /* check and set up bitrates */ |
| 600 | ieee80211_set_bitrate_flags(wiphy); |
| 601 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 602 | mutex_lock(&cfg80211_mutex); |
| 603 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 604 | res = device_add(&rdev->wiphy.dev); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 605 | if (res) { |
| 606 | mutex_unlock(&cfg80211_mutex); |
| 607 | return res; |
| 608 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 609 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 610 | /* set up regulatory info */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 611 | wiphy_regulatory_register(wiphy); |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 612 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 613 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 614 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 615 | |
| 616 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 617 | rdev->wiphy.debugfsdir = |
| 618 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 619 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 620 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 621 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 622 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 623 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 624 | struct regulatory_request request; |
| 625 | |
| 626 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 627 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 628 | request.alpha2[0] = '9'; |
| 629 | request.alpha2[1] = '9'; |
| 630 | |
| 631 | nl80211_send_reg_change_event(&request); |
| 632 | } |
| 633 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 634 | cfg80211_debugfs_rdev_add(rdev); |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 635 | mutex_unlock(&cfg80211_mutex); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 636 | |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 637 | /* |
| 638 | * due to a locking dependency this has to be outside of the |
| 639 | * cfg80211_mutex lock |
| 640 | */ |
| 641 | res = rfkill_register(rdev->rfkill); |
| 642 | if (res) |
| 643 | goto out_rm_dev; |
| 644 | |
Stanislaw Gruszka | ecb4433 | 2011-08-12 14:00:59 +0200 | [diff] [blame] | 645 | rtnl_lock(); |
| 646 | rdev->wiphy.registered = true; |
| 647 | rtnl_unlock(); |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 648 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 649 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 650 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 651 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 652 | return res; |
| 653 | } |
| 654 | EXPORT_SYMBOL(wiphy_register); |
| 655 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 656 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 657 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 658 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 659 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 660 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 661 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 662 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 663 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 664 | } |
| 665 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 666 | |
| 667 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 668 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 669 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 670 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 671 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 672 | } |
| 673 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 674 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 675 | void wiphy_unregister(struct wiphy *wiphy) |
| 676 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 677 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 678 | |
Stanislaw Gruszka | ecb4433 | 2011-08-12 14:00:59 +0200 | [diff] [blame] | 679 | rtnl_lock(); |
| 680 | rdev->wiphy.registered = false; |
| 681 | rtnl_unlock(); |
| 682 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 683 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 684 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 685 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 686 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 687 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 688 | wait_event(rdev->dev_wait, ({ |
| 689 | int __count; |
| 690 | mutex_lock(&rdev->devlist_mtx); |
| 691 | __count = rdev->opencount; |
| 692 | mutex_unlock(&rdev->devlist_mtx); |
Cristian Chilipirea | c4f6084 | 2012-05-08 12:38:53 +0300 | [diff] [blame] | 693 | __count == 0; })); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 694 | |
| 695 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 696 | BUG_ON(!list_empty(&rdev->wdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 697 | mutex_unlock(&rdev->devlist_mtx); |
| 698 | |
| 699 | /* |
| 700 | * First remove the hardware from everywhere, this makes |
| 701 | * it impossible to find from userspace. |
| 702 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 703 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 704 | list_del_rcu(&rdev->list); |
| 705 | synchronize_rcu(); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 706 | |
| 707 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 708 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 709 | * hopefully the driver will refuse it since it's tearing |
| 710 | * down the device already. We wait for this command to complete |
| 711 | * before unlinking the item from the list. |
| 712 | * Note: as codified by the BUG_ON above we cannot get here if |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 713 | * a virtual interface is still present. Hence, we can only get |
| 714 | * to lock contention here if userspace issues a command that |
| 715 | * identified the hardware by wiphy index. |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 716 | */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 717 | cfg80211_lock_rdev(rdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 718 | /* nothing */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 719 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 720 | |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 721 | /* |
| 722 | * If this device got a regulatory hint tell core its |
| 723 | * free to listen now to a new shiny device regulatory hint |
| 724 | */ |
| 725 | wiphy_regulatory_deregister(wiphy); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 726 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 727 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 728 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 729 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 730 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 731 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 732 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 733 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 734 | flush_work(&rdev->event_work); |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 735 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
Johannes Berg | 6d52563 | 2012-04-04 15:05:25 +0200 | [diff] [blame] | 736 | |
| 737 | if (rdev->wowlan && rdev->ops->set_wakeup) |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 738 | rdev_set_wakeup(rdev, false); |
Johannes Berg | 6d52563 | 2012-04-04 15:05:25 +0200 | [diff] [blame] | 739 | cfg80211_rdev_free_wowlan(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 740 | } |
| 741 | EXPORT_SYMBOL(wiphy_unregister); |
| 742 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 743 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 744 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 745 | struct cfg80211_internal_bss *scan, *tmp; |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 746 | struct cfg80211_beacon_registration *reg, *treg; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 747 | rfkill_destroy(rdev->rfkill); |
| 748 | mutex_destroy(&rdev->mtx); |
| 749 | mutex_destroy(&rdev->devlist_mtx); |
Luciano Coelho | c10841c | 2011-06-30 08:32:41 +0300 | [diff] [blame] | 750 | mutex_destroy(&rdev->sched_scan_mtx); |
Ben Greear | 37c73b5 | 2012-10-26 14:49:25 -0700 | [diff] [blame] | 751 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
| 752 | list_del(®->list); |
| 753 | kfree(reg); |
| 754 | } |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 755 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 5b112d3 | 2013-02-01 01:49:58 +0100 | [diff] [blame] | 756 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 757 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | void wiphy_free(struct wiphy *wiphy) |
| 761 | { |
| 762 | put_device(&wiphy->dev); |
| 763 | } |
| 764 | EXPORT_SYMBOL(wiphy_free); |
| 765 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 766 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 767 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 768 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 769 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 770 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 771 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 772 | } |
| 773 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 774 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 775 | static void wdev_cleanup_work(struct work_struct *work) |
| 776 | { |
| 777 | struct wireless_dev *wdev; |
| 778 | struct cfg80211_registered_device *rdev; |
| 779 | |
| 780 | wdev = container_of(work, struct wireless_dev, cleanup_work); |
| 781 | rdev = wiphy_to_dev(wdev->wiphy); |
| 782 | |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 783 | mutex_lock(&rdev->sched_scan_mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 784 | |
Johannes Berg | fd01428 | 2012-06-18 19:17:03 +0200 | [diff] [blame] | 785 | if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) { |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 786 | rdev->scan_req->aborted = true; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 787 | ___cfg80211_scan_done(rdev, true); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 788 | } |
| 789 | |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 790 | if (WARN_ON(rdev->sched_scan_req && |
| 791 | rdev->sched_scan_req->dev == wdev->netdev)) { |
| 792 | __cfg80211_stop_sched_scan(rdev, false); |
| 793 | } |
| 794 | |
Luciano Coelho | c10841c | 2011-06-30 08:32:41 +0300 | [diff] [blame] | 795 | mutex_unlock(&rdev->sched_scan_mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 796 | |
| 797 | mutex_lock(&rdev->devlist_mtx); |
| 798 | rdev->opencount--; |
| 799 | mutex_unlock(&rdev->devlist_mtx); |
| 800 | wake_up(&rdev->dev_wait); |
| 801 | |
| 802 | dev_put(wdev->netdev); |
| 803 | } |
| 804 | |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 805 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
| 806 | { |
| 807 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
| 808 | |
| 809 | ASSERT_RTNL(); |
| 810 | |
| 811 | if (WARN_ON(wdev->netdev)) |
| 812 | return; |
| 813 | |
| 814 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 815 | mutex_lock(&rdev->sched_scan_mtx); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 816 | list_del_rcu(&wdev->list); |
| 817 | rdev->devlist_generation++; |
| 818 | |
| 819 | switch (wdev->iftype) { |
| 820 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 821 | cfg80211_stop_p2p_device(rdev, wdev); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 822 | break; |
| 823 | default: |
| 824 | WARN_ON_ONCE(1); |
| 825 | break; |
| 826 | } |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 827 | mutex_unlock(&rdev->sched_scan_mtx); |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 828 | mutex_unlock(&rdev->devlist_mtx); |
| 829 | } |
| 830 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
| 831 | |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 832 | static struct device_type wiphy_type = { |
| 833 | .name = "wlan", |
| 834 | }; |
| 835 | |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 836 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
| 837 | enum nl80211_iftype iftype, int num) |
| 838 | { |
Johannes Berg | c5a7e58 | 2012-07-04 13:28:18 +0200 | [diff] [blame] | 839 | ASSERT_RTNL(); |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 840 | |
| 841 | rdev->num_running_ifaces += num; |
| 842 | if (iftype == NL80211_IFTYPE_MONITOR) |
| 843 | rdev->num_running_monitor_ifaces += num; |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 844 | } |
| 845 | |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 846 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
| 847 | struct wireless_dev *wdev) |
| 848 | { |
| 849 | struct net_device *dev = wdev->netdev; |
| 850 | |
| 851 | switch (wdev->iftype) { |
| 852 | case NL80211_IFTYPE_ADHOC: |
| 853 | cfg80211_leave_ibss(rdev, dev, true); |
| 854 | break; |
| 855 | case NL80211_IFTYPE_P2P_CLIENT: |
| 856 | case NL80211_IFTYPE_STATION: |
| 857 | mutex_lock(&rdev->sched_scan_mtx); |
| 858 | __cfg80211_stop_sched_scan(rdev, false); |
| 859 | mutex_unlock(&rdev->sched_scan_mtx); |
| 860 | |
| 861 | wdev_lock(wdev); |
| 862 | #ifdef CONFIG_CFG80211_WEXT |
| 863 | kfree(wdev->wext.ie); |
| 864 | wdev->wext.ie = NULL; |
| 865 | wdev->wext.ie_len = 0; |
| 866 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
| 867 | #endif |
| 868 | __cfg80211_disconnect(rdev, dev, |
| 869 | WLAN_REASON_DEAUTH_LEAVING, true); |
| 870 | cfg80211_mlme_down(rdev, dev); |
| 871 | wdev_unlock(wdev); |
| 872 | break; |
| 873 | case NL80211_IFTYPE_MESH_POINT: |
| 874 | cfg80211_leave_mesh(rdev, dev); |
| 875 | break; |
| 876 | case NL80211_IFTYPE_AP: |
| 877 | cfg80211_stop_ap(rdev, dev); |
| 878 | break; |
| 879 | default: |
| 880 | break; |
| 881 | } |
| 882 | |
| 883 | wdev->beacon_interval = 0; |
| 884 | } |
| 885 | |
Cristian Chilipirea | c4f6084 | 2012-05-08 12:38:53 +0300 | [diff] [blame] | 886 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 887 | unsigned long state, |
| 888 | void *ndev) |
| 889 | { |
| 890 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 891 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 892 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 893 | int ret; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 894 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 895 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 896 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 897 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 898 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 899 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 900 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 901 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 902 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 903 | case NETDEV_POST_INIT: |
| 904 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 905 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 906 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 907 | /* |
| 908 | * NB: cannot take rdev->mtx here because this may be |
| 909 | * called within code protected by it when interfaces |
| 910 | * are added with nl80211. |
| 911 | */ |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 912 | mutex_init(&wdev->mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 913 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 914 | INIT_LIST_HEAD(&wdev->event_list); |
| 915 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 916 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
| 917 | spin_lock_init(&wdev->mgmt_registrations_lock); |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 918 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 919 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 89a54e4 | 2012-06-15 14:33:17 +0200 | [diff] [blame] | 920 | wdev->identifier = ++rdev->wdev_id; |
| 921 | list_add_rcu(&wdev->list, &rdev->wdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 922 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 923 | /* can only change netns with wiphy */ |
| 924 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 925 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 926 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 927 | "phy80211")) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 928 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 929 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 930 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 931 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 932 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 933 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 934 | wdev->wext.default_key = -1; |
| 935 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 936 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 937 | #endif |
| 938 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 939 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 940 | wdev->ps = true; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 941 | else |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 942 | wdev->ps = false; |
Juuso Oikarinen | 9043f3b | 2010-04-27 12:47:41 +0300 | [diff] [blame] | 943 | /* allow mac80211 to determine the timeout */ |
| 944 | wdev->ps_timeout = -1; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 945 | |
Stanislaw Gruszka | d07d750 | 2013-01-10 23:19:10 +0000 | [diff] [blame] | 946 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 947 | |
| 948 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 949 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 950 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
| 951 | dev->priv_flags |= IFF_DONT_BRIDGE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 952 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 953 | case NETDEV_GOING_DOWN: |
Stanislaw Gruszka | 8125696 | 2013-02-28 10:55:25 +0100 | [diff] [blame] | 954 | cfg80211_leave(rdev, wdev); |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 955 | break; |
| 956 | case NETDEV_DOWN: |
Michal Kazior | dbbae26 | 2012-06-29 12:47:01 +0200 | [diff] [blame] | 957 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
Johannes Berg | c5a7e58 | 2012-07-04 13:28:18 +0200 | [diff] [blame] | 958 | dev_hold(dev); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 959 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 960 | break; |
| 961 | case NETDEV_UP: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 962 | /* |
| 963 | * If we have a really quick DOWN/UP succession we may |
| 964 | * have this work still pending ... cancel it and see |
| 965 | * if it was pending, in which case we need to account |
| 966 | * for some of the work it would have done. |
| 967 | */ |
| 968 | if (cancel_work_sync(&wdev->cleanup_work)) { |
| 969 | mutex_lock(&rdev->devlist_mtx); |
| 970 | rdev->opencount--; |
| 971 | mutex_unlock(&rdev->devlist_mtx); |
| 972 | dev_put(dev); |
| 973 | } |
Johannes Berg | 4290cb4 | 2012-07-12 22:19:48 +0200 | [diff] [blame] | 974 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 975 | cfg80211_lock_rdev(rdev); |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 976 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 977 | mutex_lock(&rdev->sched_scan_mtx); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 978 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 979 | switch (wdev->iftype) { |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 980 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 981 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 982 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 983 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 984 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 985 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 986 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 987 | #endif |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 988 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 989 | case NL80211_IFTYPE_MESH_POINT: |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 990 | { |
| 991 | /* backward compat code... */ |
| 992 | struct mesh_setup setup; |
| 993 | memcpy(&setup, &default_mesh_setup, |
| 994 | sizeof(setup)); |
| 995 | /* back compat only needed for mesh_id */ |
| 996 | setup.mesh_id = wdev->ssid; |
| 997 | setup.mesh_id_len = wdev->mesh_id_up_len; |
| 998 | if (wdev->mesh_id_up_len) |
| 999 | __cfg80211_join_mesh(rdev, dev, |
| 1000 | &setup, |
| 1001 | &default_mesh_config); |
| 1002 | break; |
| 1003 | } |
| 1004 | #endif |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 1005 | default: |
| 1006 | break; |
| 1007 | } |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 1008 | wdev_unlock(wdev); |
Johannes Berg | f9f4752 | 2013-03-19 15:04:07 +0100 | [diff] [blame] | 1009 | mutex_unlock(&rdev->sched_scan_mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 1010 | rdev->opencount++; |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 1011 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 1012 | cfg80211_unlock_rdev(rdev); |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 1013 | |
| 1014 | /* |
| 1015 | * Configure power management to the driver here so that its |
| 1016 | * correctly set also after interface type changes etc. |
| 1017 | */ |
Eliad Peller | 5966f2d | 2011-07-19 12:57:13 +0300 | [diff] [blame] | 1018 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
| 1019 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 1020 | rdev->ops->set_power_mgmt) |
Hila Gonen | e35e4d2 | 2012-06-27 17:19:42 +0300 | [diff] [blame] | 1021 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
| 1022 | wdev->ps_timeout)) { |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 1023 | /* assume this means it's off */ |
| 1024 | wdev->ps = false; |
| 1025 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 1026 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1027 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 1028 | /* |
| 1029 | * NB: cannot take rdev->mtx here because this may be |
| 1030 | * called within code protected by it when interfaces |
| 1031 | * are removed with nl80211. |
| 1032 | */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1033 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | e40cbdac | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 1034 | /* |
| 1035 | * It is possible to get NETDEV_UNREGISTER |
| 1036 | * multiple times. To detect that, check |
| 1037 | * that the interface is still on the list |
| 1038 | * of registered interfaces, and only then |
| 1039 | * remove and clean it up. |
| 1040 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 1041 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1042 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 1043 | list_del_rcu(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 1044 | rdev->devlist_generation++; |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1045 | cfg80211_mlme_purge_registrations(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 1046 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbdac | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 1047 | kfree(wdev->wext.keys); |
| 1048 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1049 | } |
| 1050 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 1051 | /* |
| 1052 | * synchronise (so that we won't find this netdev |
| 1053 | * from other code any more) and then clear the list |
| 1054 | * head so that the above code can safely check for |
| 1055 | * !list_empty() to avoid double-cleanup. |
| 1056 | */ |
| 1057 | synchronize_rcu(); |
| 1058 | INIT_LIST_HEAD(&wdev->list); |
Daniel Drake | 1f6fc43 | 2012-08-02 18:41:48 +0100 | [diff] [blame] | 1059 | /* |
| 1060 | * Ensure that all events have been processed and |
| 1061 | * freed. |
| 1062 | */ |
| 1063 | cfg80211_process_wdev_events(wdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1064 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1065 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 1066 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 1067 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1068 | if (rfkill_blocked(rdev->rfkill)) |
| 1069 | return notifier_from_errno(-ERFKILL); |
Michal Kazior | e4e3245 | 2012-06-29 12:47:08 +0200 | [diff] [blame] | 1070 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 1071 | ret = cfg80211_can_add_interface(rdev, wdev->iftype); |
Michal Kazior | e4e3245 | 2012-06-29 12:47:08 +0200 | [diff] [blame] | 1072 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame] | 1073 | if (ret) |
| 1074 | return notifier_from_errno(ret); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1075 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1076 | } |
| 1077 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1078 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1079 | } |
| 1080 | |
| 1081 | static struct notifier_block cfg80211_netdev_notifier = { |
| 1082 | .notifier_call = cfg80211_netdev_notifier_call, |
| 1083 | }; |
| 1084 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1085 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 1086 | { |
| 1087 | struct cfg80211_registered_device *rdev; |
| 1088 | |
| 1089 | rtnl_lock(); |
| 1090 | mutex_lock(&cfg80211_mutex); |
| 1091 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1092 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 1093 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 1094 | } |
| 1095 | mutex_unlock(&cfg80211_mutex); |
| 1096 | rtnl_unlock(); |
| 1097 | } |
| 1098 | |
| 1099 | static struct pernet_operations cfg80211_pernet_ops = { |
| 1100 | .exit = cfg80211_pernet_exit, |
| 1101 | }; |
| 1102 | |
| 1103 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1104 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1105 | int err; |
| 1106 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1107 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 1108 | if (err) |
| 1109 | goto out_fail_pernet; |
| 1110 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1111 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1112 | if (err) |
| 1113 | goto out_fail_sysfs; |
| 1114 | |
| 1115 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1116 | if (err) |
| 1117 | goto out_fail_notifier; |
| 1118 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1119 | err = nl80211_init(); |
| 1120 | if (err) |
| 1121 | goto out_fail_nl80211; |
| 1122 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1123 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 1124 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1125 | err = regulatory_init(); |
| 1126 | if (err) |
| 1127 | goto out_fail_reg; |
| 1128 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1129 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
Wei Yongjun | f00f188 | 2013-03-20 20:22:54 +0800 | [diff] [blame] | 1130 | if (!cfg80211_wq) { |
| 1131 | err = -ENOMEM; |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1132 | goto out_fail_wq; |
Wei Yongjun | f00f188 | 2013-03-20 20:22:54 +0800 | [diff] [blame] | 1133 | } |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1134 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1135 | return 0; |
| 1136 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1137 | out_fail_wq: |
| 1138 | regulatory_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1139 | out_fail_reg: |
| 1140 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1141 | out_fail_nl80211: |
| 1142 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1143 | out_fail_notifier: |
| 1144 | wiphy_sysfs_exit(); |
| 1145 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1146 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 1147 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1148 | return err; |
| 1149 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 1150 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1151 | |
Uwe Kleine-König | f884e38 | 2010-06-18 09:38:54 +0200 | [diff] [blame] | 1152 | static void __exit cfg80211_exit(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1153 | { |
| 1154 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1155 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1156 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1157 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1158 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1159 | unregister_pernet_device(&cfg80211_pernet_ops); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1160 | destroy_workqueue(cfg80211_wq); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1161 | } |
| 1162 | module_exit(cfg80211_exit); |