Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This is the linux wireless configuration interface. |
| 3 | * |
Johannes Berg | 0864512 | 2009-05-11 13:54:58 +0200 | [diff] [blame] | 4 | * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <linux/if.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/err.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 10 | #include <linux/list.h> |
| 11 | #include <linux/nl80211.h> |
| 12 | #include <linux/debugfs.h> |
| 13 | #include <linux/notifier.h> |
| 14 | #include <linux/device.h> |
Zhu Yi | 16a832e | 2009-08-19 16:08:22 +0800 | [diff] [blame] | 15 | #include <linux/etherdevice.h> |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 16 | #include <linux/rtnetlink.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 17 | #include <net/genetlink.h> |
| 18 | #include <net/cfg80211.h> |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 19 | #include "nl80211.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 20 | #include "core.h" |
| 21 | #include "sysfs.h" |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 22 | #include "debugfs.h" |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 23 | #include "wext-compat.h" |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 24 | #include "ethtool.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 25 | |
| 26 | /* name for sysfs, %d is appended */ |
| 27 | #define PHY_NAME "phy" |
| 28 | |
| 29 | MODULE_AUTHOR("Johannes Berg"); |
| 30 | MODULE_LICENSE("GPL"); |
| 31 | MODULE_DESCRIPTION("wireless configuration support"); |
| 32 | |
| 33 | /* RCU might be appropriate here since we usually |
| 34 | * only read the list, and that can happen quite |
| 35 | * often because we need to do it for each command */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 36 | LIST_HEAD(cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 37 | int cfg80211_rdev_list_generation; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 38 | |
| 39 | /* |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 40 | * This is used to protect the cfg80211_rdev_list |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 41 | */ |
| 42 | DEFINE_MUTEX(cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 43 | |
| 44 | /* for debugfs */ |
| 45 | static struct dentry *ieee80211_debugfs_dir; |
| 46 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 47 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 48 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 49 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 50 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 51 | |
Luis R. Rodriguez | 85fd129 | 2009-02-21 00:04:20 -0500 | [diff] [blame] | 52 | if (!wiphy_idx_valid(wiphy_idx)) |
| 53 | return NULL; |
| 54 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 55 | assert_cfg80211_lock(); |
| 56 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 57 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 58 | if (rdev->wiphy_idx == wiphy_idx) { |
| 59 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 60 | break; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | return result; |
| 65 | } |
| 66 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 67 | int get_wiphy_idx(struct wiphy *wiphy) |
| 68 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 69 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 70 | if (!wiphy) |
| 71 | return WIPHY_IDX_STALE; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 72 | rdev = wiphy_to_dev(wiphy); |
| 73 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 74 | } |
| 75 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 76 | /* requires cfg80211_rdev_mutex to be held! */ |
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 | |
| 81 | if (!wiphy_idx_valid(wiphy_idx)) |
| 82 | return NULL; |
| 83 | |
| 84 | assert_cfg80211_lock(); |
| 85 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 86 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 87 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 88 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 89 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 90 | } |
| 91 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 92 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 93 | struct cfg80211_registered_device * |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 94 | __cfg80211_rdev_from_info(struct genl_info *info) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 95 | { |
| 96 | int ifindex; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 97 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 98 | struct net_device *dev; |
| 99 | int err = -EINVAL; |
| 100 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 101 | assert_cfg80211_lock(); |
| 102 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 103 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 104 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 105 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
| 106 | err = -ENODEV; |
| 107 | } |
| 108 | |
| 109 | if (info->attrs[NL80211_ATTR_IFINDEX]) { |
| 110 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 111 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 112 | if (dev) { |
| 113 | if (dev->ieee80211_ptr) |
| 114 | byifidx = |
| 115 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 116 | dev_put(dev); |
| 117 | } |
| 118 | err = -ENODEV; |
| 119 | } |
| 120 | |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 121 | if (bywiphyidx && byifidx) { |
| 122 | if (bywiphyidx != byifidx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 123 | return ERR_PTR(-EINVAL); |
| 124 | else |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 125 | return bywiphyidx; /* == byifidx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 126 | } |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 127 | if (bywiphyidx) |
| 128 | return bywiphyidx; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 129 | |
| 130 | if (byifidx) |
| 131 | return byifidx; |
| 132 | |
| 133 | return ERR_PTR(err); |
| 134 | } |
| 135 | |
| 136 | struct cfg80211_registered_device * |
| 137 | cfg80211_get_dev_from_info(struct genl_info *info) |
| 138 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 139 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 140 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 141 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 142 | rdev = __cfg80211_rdev_from_info(info); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 143 | |
| 144 | /* if it is not an error we grab the lock on |
| 145 | * it to assure it won't be going away while |
| 146 | * we operate on it */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 147 | if (!IS_ERR(rdev)) |
| 148 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 149 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 150 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 151 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 152 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | struct cfg80211_registered_device * |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 156 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 157 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 158 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 159 | struct net_device *dev; |
| 160 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 161 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 162 | dev = dev_get_by_index(net, ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 163 | if (!dev) |
| 164 | goto out; |
| 165 | if (dev->ieee80211_ptr) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 166 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 167 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 168 | } else |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 169 | rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 170 | dev_put(dev); |
| 171 | out: |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 172 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 173 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 174 | } |
| 175 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 176 | /* requires cfg80211_mutex to be held */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 177 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 178 | char *newname) |
| 179 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 180 | struct cfg80211_registered_device *rdev2; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 181 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 182 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 183 | assert_cfg80211_lock(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 184 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 185 | /* prohibit calling the thing phy%d when %d is not its number */ |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 186 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 187 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 188 | /* count number of places needed to print wiphy_idx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 189 | digits = 1; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 190 | while (wiphy_idx /= 10) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 191 | digits++; |
| 192 | /* |
| 193 | * deny the name if it is phy<idx> where <idx> is printed |
| 194 | * without leading zeroes. taken == strlen(newname) here |
| 195 | */ |
| 196 | if (taken == strlen(PHY_NAME) + digits) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 197 | return -EINVAL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 198 | } |
| 199 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 200 | |
| 201 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 202 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 203 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 204 | |
| 205 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 206 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 207 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 208 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 209 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 210 | result = device_rename(&rdev->wiphy.dev, newname); |
| 211 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 212 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 213 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 214 | if (rdev->wiphy.debugfsdir && |
| 215 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 216 | rdev->wiphy.debugfsdir, |
| 217 | rdev->wiphy.debugfsdir->d_parent, |
| 218 | newname)) |
| 219 | printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", |
| 220 | newname); |
| 221 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 222 | nl80211_notify_dev_rename(rdev); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 223 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 224 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 225 | } |
| 226 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 227 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 228 | struct net *net) |
| 229 | { |
| 230 | struct wireless_dev *wdev; |
| 231 | int err = 0; |
| 232 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame^] | 233 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 234 | return -EOPNOTSUPP; |
| 235 | |
| 236 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
| 237 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 238 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 239 | if (err) |
| 240 | break; |
| 241 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 242 | } |
| 243 | |
| 244 | if (err) { |
| 245 | /* failed -- clean up to old netns */ |
| 246 | net = wiphy_net(&rdev->wiphy); |
| 247 | |
| 248 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, |
| 249 | list) { |
| 250 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 251 | err = dev_change_net_namespace(wdev->netdev, net, |
| 252 | "wlan%d"); |
| 253 | WARN_ON(err); |
| 254 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | wiphy_net_set(&rdev->wiphy, net); |
| 259 | |
| 260 | return err; |
| 261 | } |
| 262 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 263 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 264 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 265 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 266 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 267 | rdev->ops->rfkill_poll(&rdev->wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 271 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 272 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 273 | struct wireless_dev *wdev; |
| 274 | |
| 275 | if (!blocked) |
| 276 | return 0; |
| 277 | |
| 278 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 279 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 280 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 281 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 282 | dev_close(wdev->netdev); |
| 283 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 284 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 285 | rtnl_unlock(); |
| 286 | |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 291 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 292 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 293 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 294 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 295 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 296 | } |
| 297 | |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 298 | static void cfg80211_event_work(struct work_struct *work) |
| 299 | { |
| 300 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 301 | |
| 302 | rdev = container_of(work, struct cfg80211_registered_device, |
| 303 | event_work); |
| 304 | |
| 305 | rtnl_lock(); |
| 306 | cfg80211_lock_rdev(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 307 | |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 308 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 309 | cfg80211_unlock_rdev(rdev); |
| 310 | rtnl_unlock(); |
| 311 | } |
| 312 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 313 | /* exported functions */ |
| 314 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 315 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 316 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 317 | static int wiphy_counter; |
| 318 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 319 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 320 | int alloc_size; |
| 321 | |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 322 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 323 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 324 | WARN_ON(ops->connect && !ops->disconnect); |
| 325 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 326 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 327 | WARN_ON(ops->add_station && !ops->del_station); |
| 328 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 329 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 330 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 331 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 332 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 333 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 334 | return NULL; |
| 335 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 336 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 337 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 338 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 339 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 340 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 341 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 342 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 343 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 344 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 345 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 346 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 347 | return NULL; |
| 348 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 349 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 350 | mutex_unlock(&cfg80211_mutex); |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 351 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 352 | /* give it a proper name */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 353 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 354 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 355 | mutex_init(&rdev->mtx); |
| 356 | mutex_init(&rdev->devlist_mtx); |
| 357 | INIT_LIST_HEAD(&rdev->netdev_list); |
| 358 | spin_lock_init(&rdev->bss_lock); |
| 359 | INIT_LIST_HEAD(&rdev->bss_list); |
| 360 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 361 | |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 362 | #ifdef CONFIG_CFG80211_WEXT |
| 363 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 364 | #endif |
| 365 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 366 | device_initialize(&rdev->wiphy.dev); |
| 367 | rdev->wiphy.dev.class = &ieee80211_class; |
| 368 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 369 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame^] | 370 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 371 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 372 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 373 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 374 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 375 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 376 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 377 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 378 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 379 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 380 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 381 | if (!rdev->rfkill) { |
| 382 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 383 | return NULL; |
| 384 | } |
| 385 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 386 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 387 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 388 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 389 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 390 | init_waitqueue_head(&rdev->dev_wait); |
| 391 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 392 | /* |
| 393 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 394 | * Fragmentation and RTS threshold are disabled by default with the |
| 395 | * special -1 value. |
| 396 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 397 | rdev->wiphy.retry_short = 7; |
| 398 | rdev->wiphy.retry_long = 4; |
| 399 | rdev->wiphy.frag_threshold = (u32) -1; |
| 400 | rdev->wiphy.rts_threshold = (u32) -1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 401 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 402 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 403 | } |
| 404 | EXPORT_SYMBOL(wiphy_new); |
| 405 | |
| 406 | int wiphy_register(struct wiphy *wiphy) |
| 407 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 408 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 409 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 410 | enum ieee80211_band band; |
| 411 | struct ieee80211_supported_band *sband; |
| 412 | bool have_band = false; |
| 413 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 414 | u16 ifmodes = wiphy->interface_modes; |
| 415 | |
| 416 | /* sanity check ifmodes */ |
| 417 | WARN_ON(!ifmodes); |
| 418 | ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; |
| 419 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 420 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 421 | |
| 422 | /* sanity check supported bands/channels */ |
| 423 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 424 | sband = wiphy->bands[band]; |
| 425 | if (!sband) |
| 426 | continue; |
| 427 | |
| 428 | sband->band = band; |
| 429 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 430 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 431 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 432 | |
| 433 | /* |
| 434 | * Since we use a u32 for rate bitmaps in |
| 435 | * ieee80211_get_response_rate, we cannot |
| 436 | * have more than 32 legacy rates. |
| 437 | */ |
| 438 | if (WARN_ON(sband->n_bitrates > 32)) |
| 439 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 440 | |
| 441 | for (i = 0; i < sband->n_channels; i++) { |
| 442 | sband->channels[i].orig_flags = |
| 443 | sband->channels[i].flags; |
| 444 | sband->channels[i].orig_mag = |
| 445 | sband->channels[i].max_antenna_gain; |
| 446 | sband->channels[i].orig_mpwr = |
| 447 | sband->channels[i].max_power; |
| 448 | sband->channels[i].band = band; |
| 449 | } |
| 450 | |
| 451 | have_band = true; |
| 452 | } |
| 453 | |
| 454 | if (!have_band) { |
| 455 | WARN_ON(1); |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | |
| 459 | /* check and set up bitrates */ |
| 460 | ieee80211_set_bitrate_flags(wiphy); |
| 461 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 462 | res = device_add(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 463 | if (res) |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 464 | return res; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 465 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 466 | res = rfkill_register(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 467 | if (res) |
| 468 | goto out_rm_dev; |
| 469 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 470 | mutex_lock(&cfg80211_mutex); |
| 471 | |
| 472 | /* set up regulatory info */ |
| 473 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); |
| 474 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 475 | list_add(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 476 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 477 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 478 | mutex_unlock(&cfg80211_mutex); |
| 479 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 480 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 481 | rdev->wiphy.debugfsdir = |
| 482 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 483 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 484 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 485 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 486 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame^] | 487 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 488 | struct regulatory_request request; |
| 489 | |
| 490 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 491 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 492 | request.alpha2[0] = '9'; |
| 493 | request.alpha2[1] = '9'; |
| 494 | |
| 495 | nl80211_send_reg_change_event(&request); |
| 496 | } |
| 497 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 498 | cfg80211_debugfs_rdev_add(rdev); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 499 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 500 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 501 | |
| 502 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 503 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 504 | return res; |
| 505 | } |
| 506 | EXPORT_SYMBOL(wiphy_register); |
| 507 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 508 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 509 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 510 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 511 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 512 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 513 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 514 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 515 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 516 | } |
| 517 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 518 | |
| 519 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 520 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 521 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 522 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 523 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 524 | } |
| 525 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 526 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 527 | void wiphy_unregister(struct wiphy *wiphy) |
| 528 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 529 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 530 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 531 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 532 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 533 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 534 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 535 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 536 | wait_event(rdev->dev_wait, ({ |
| 537 | int __count; |
| 538 | mutex_lock(&rdev->devlist_mtx); |
| 539 | __count = rdev->opencount; |
| 540 | mutex_unlock(&rdev->devlist_mtx); |
| 541 | __count == 0;})); |
| 542 | |
| 543 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 544 | BUG_ON(!list_empty(&rdev->netdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 545 | mutex_unlock(&rdev->devlist_mtx); |
| 546 | |
| 547 | /* |
| 548 | * First remove the hardware from everywhere, this makes |
| 549 | * it impossible to find from userspace. |
| 550 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 551 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 552 | list_del(&rdev->list); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 553 | |
| 554 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 555 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 556 | * hopefully the driver will refuse it since it's tearing |
| 557 | * down the device already. We wait for this command to complete |
| 558 | * before unlinking the item from the list. |
| 559 | * 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] | 560 | * a virtual interface is still present. Hence, we can only get |
| 561 | * to lock contention here if userspace issues a command that |
| 562 | * identified the hardware by wiphy index. |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 563 | */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 564 | cfg80211_lock_rdev(rdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 565 | /* nothing */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 566 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 567 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 568 | /* If this device got a regulatory hint tell core its |
| 569 | * free to listen now to a new shiny device regulatory hint */ |
| 570 | reg_device_remove(wiphy); |
| 571 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 572 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 573 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 574 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 575 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 576 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 577 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 578 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 579 | flush_work(&rdev->event_work); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 580 | } |
| 581 | EXPORT_SYMBOL(wiphy_unregister); |
| 582 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 583 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 584 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 585 | struct cfg80211_internal_bss *scan, *tmp; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 586 | rfkill_destroy(rdev->rfkill); |
| 587 | mutex_destroy(&rdev->mtx); |
| 588 | mutex_destroy(&rdev->devlist_mtx); |
| 589 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 78c1c7e | 2009-02-10 21:25:57 +0100 | [diff] [blame] | 590 | cfg80211_put_bss(&scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 591 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | void wiphy_free(struct wiphy *wiphy) |
| 595 | { |
| 596 | put_device(&wiphy->dev); |
| 597 | } |
| 598 | EXPORT_SYMBOL(wiphy_free); |
| 599 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 600 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 601 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 602 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 603 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 604 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 605 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 606 | } |
| 607 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 608 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 609 | static void wdev_cleanup_work(struct work_struct *work) |
| 610 | { |
| 611 | struct wireless_dev *wdev; |
| 612 | struct cfg80211_registered_device *rdev; |
| 613 | |
| 614 | wdev = container_of(work, struct wireless_dev, cleanup_work); |
| 615 | rdev = wiphy_to_dev(wdev->wiphy); |
| 616 | |
| 617 | cfg80211_lock_rdev(rdev); |
| 618 | |
| 619 | if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { |
| 620 | rdev->scan_req->aborted = true; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 621 | ___cfg80211_scan_done(rdev, true); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | cfg80211_unlock_rdev(rdev); |
| 625 | |
| 626 | mutex_lock(&rdev->devlist_mtx); |
| 627 | rdev->opencount--; |
| 628 | mutex_unlock(&rdev->devlist_mtx); |
| 629 | wake_up(&rdev->dev_wait); |
| 630 | |
| 631 | dev_put(wdev->netdev); |
| 632 | } |
| 633 | |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 634 | static struct device_type wiphy_type = { |
| 635 | .name = "wlan", |
| 636 | }; |
| 637 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 638 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
| 639 | unsigned long state, |
| 640 | void *ndev) |
| 641 | { |
| 642 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 643 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 644 | struct cfg80211_registered_device *rdev; |
| 645 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 646 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 647 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 648 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 649 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 650 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 651 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 652 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 653 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 654 | case NETDEV_POST_INIT: |
| 655 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 656 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 657 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 658 | /* |
| 659 | * NB: cannot take rdev->mtx here because this may be |
| 660 | * called within code protected by it when interfaces |
| 661 | * are added with nl80211. |
| 662 | */ |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 663 | mutex_init(&wdev->mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 664 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 665 | INIT_LIST_HEAD(&wdev->event_list); |
| 666 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 667 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 668 | list_add(&wdev->list, &rdev->netdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 669 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 670 | /* can only change netns with wiphy */ |
| 671 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 672 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 673 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 674 | "phy80211")) { |
| 675 | printk(KERN_ERR "wireless: failed to add phy80211 " |
| 676 | "symlink to netdev!\n"); |
| 677 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 678 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 679 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 680 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 681 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 682 | wdev->wext.default_key = -1; |
| 683 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 684 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame^] | 685 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
| 686 | wdev->wext.ps = true; |
| 687 | else |
| 688 | wdev->wext.ps = false; |
Johannes Berg | 75e6c3b | 2009-07-31 11:18:13 +0200 | [diff] [blame] | 689 | wdev->wext.ps_timeout = 100; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 690 | if (rdev->ops->set_power_mgmt) |
| 691 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, |
| 692 | wdev->wext.ps, |
| 693 | wdev->wext.ps_timeout)) { |
| 694 | /* assume this means it's off */ |
| 695 | wdev->wext.ps = false; |
| 696 | } |
Johannes Berg | 0864512 | 2009-05-11 13:54:58 +0200 | [diff] [blame] | 697 | #endif |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 698 | if (!dev->ethtool_ops) |
| 699 | dev->ethtool_ops = &cfg80211_ethtool_ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 700 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 701 | case NETDEV_GOING_DOWN: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 702 | switch (wdev->iftype) { |
| 703 | case NL80211_IFTYPE_ADHOC: |
| 704 | cfg80211_leave_ibss(rdev, dev, true); |
| 705 | break; |
| 706 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 707 | wdev_lock(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 708 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 709 | kfree(wdev->wext.ie); |
| 710 | wdev->wext.ie = NULL; |
| 711 | wdev->wext.ie_len = 0; |
Johannes Berg | 0eb1464 | 2009-07-02 15:49:03 +0200 | [diff] [blame] | 712 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 713 | #endif |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 714 | __cfg80211_disconnect(rdev, dev, |
| 715 | WLAN_REASON_DEAUTH_LEAVING, true); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame] | 716 | cfg80211_mlme_down(rdev, dev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 717 | wdev_unlock(wdev); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 718 | break; |
| 719 | default: |
| 720 | break; |
| 721 | } |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 722 | break; |
| 723 | case NETDEV_DOWN: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 724 | dev_hold(dev); |
| 725 | schedule_work(&wdev->cleanup_work); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 726 | break; |
| 727 | case NETDEV_UP: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 728 | /* |
| 729 | * If we have a really quick DOWN/UP succession we may |
| 730 | * have this work still pending ... cancel it and see |
| 731 | * if it was pending, in which case we need to account |
| 732 | * for some of the work it would have done. |
| 733 | */ |
| 734 | if (cancel_work_sync(&wdev->cleanup_work)) { |
| 735 | mutex_lock(&rdev->devlist_mtx); |
| 736 | rdev->opencount--; |
| 737 | mutex_unlock(&rdev->devlist_mtx); |
| 738 | dev_put(dev); |
| 739 | } |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 740 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 741 | cfg80211_lock_rdev(rdev); |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 742 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 743 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 744 | switch (wdev->iftype) { |
| 745 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 746 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 747 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 748 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 749 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 750 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 751 | default: |
| 752 | break; |
| 753 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 754 | wdev_unlock(wdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 755 | rdev->opencount++; |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 756 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 757 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 758 | #endif |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 759 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 760 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 761 | /* |
| 762 | * NB: cannot take rdev->mtx here because this may be |
| 763 | * called within code protected by it when interfaces |
| 764 | * are removed with nl80211. |
| 765 | */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 766 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 767 | /* |
| 768 | * It is possible to get NETDEV_UNREGISTER |
| 769 | * multiple times. To detect that, check |
| 770 | * that the interface is still on the list |
| 771 | * of registered interfaces, and only then |
| 772 | * remove and clean it up. |
| 773 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 774 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 775 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 776 | list_del_init(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 777 | rdev->devlist_generation++; |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 778 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 779 | kfree(wdev->wext.keys); |
| 780 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 781 | } |
| 782 | mutex_unlock(&rdev->devlist_mtx); |
| 783 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 784 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 785 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 786 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 787 | if (rfkill_blocked(rdev->rfkill)) |
| 788 | return notifier_from_errno(-ERFKILL); |
| 789 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 792 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | static struct notifier_block cfg80211_netdev_notifier = { |
| 796 | .notifier_call = cfg80211_netdev_notifier_call, |
| 797 | }; |
| 798 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 799 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 800 | { |
| 801 | struct cfg80211_registered_device *rdev; |
| 802 | |
| 803 | rtnl_lock(); |
| 804 | mutex_lock(&cfg80211_mutex); |
| 805 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 806 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 807 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 808 | } |
| 809 | mutex_unlock(&cfg80211_mutex); |
| 810 | rtnl_unlock(); |
| 811 | } |
| 812 | |
| 813 | static struct pernet_operations cfg80211_pernet_ops = { |
| 814 | .exit = cfg80211_pernet_exit, |
| 815 | }; |
| 816 | |
| 817 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 818 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 819 | int err; |
| 820 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 821 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 822 | if (err) |
| 823 | goto out_fail_pernet; |
| 824 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 825 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 826 | if (err) |
| 827 | goto out_fail_sysfs; |
| 828 | |
| 829 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 830 | if (err) |
| 831 | goto out_fail_notifier; |
| 832 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 833 | err = nl80211_init(); |
| 834 | if (err) |
| 835 | goto out_fail_nl80211; |
| 836 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 837 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 838 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 839 | err = regulatory_init(); |
| 840 | if (err) |
| 841 | goto out_fail_reg; |
| 842 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 843 | return 0; |
| 844 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 845 | out_fail_reg: |
| 846 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 847 | out_fail_nl80211: |
| 848 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 849 | out_fail_notifier: |
| 850 | wiphy_sysfs_exit(); |
| 851 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 852 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 853 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 854 | return err; |
| 855 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 856 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 857 | |
| 858 | static void cfg80211_exit(void) |
| 859 | { |
| 860 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 861 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 862 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 863 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 864 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 865 | unregister_pernet_device(&cfg80211_pernet_ops); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 866 | } |
| 867 | module_exit(cfg80211_exit); |