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 | |
| 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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 11 | #include <linux/slab.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 12 | #include <linux/nl80211.h> |
| 13 | #include <linux/debugfs.h> |
| 14 | #include <linux/notifier.h> |
| 15 | #include <linux/device.h> |
Zhu Yi | 16a832e | 2009-08-19 16:08:22 +0800 | [diff] [blame] | 16 | #include <linux/etherdevice.h> |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 17 | #include <linux/rtnetlink.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 18 | #include <linux/sched.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 19 | #include <net/genetlink.h> |
| 20 | #include <net/cfg80211.h> |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 21 | #include "nl80211.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 22 | #include "core.h" |
| 23 | #include "sysfs.h" |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 24 | #include "debugfs.h" |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 25 | #include "wext-compat.h" |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 26 | #include "ethtool.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 27 | |
| 28 | /* name for sysfs, %d is appended */ |
| 29 | #define PHY_NAME "phy" |
| 30 | |
| 31 | MODULE_AUTHOR("Johannes Berg"); |
| 32 | MODULE_LICENSE("GPL"); |
| 33 | MODULE_DESCRIPTION("wireless configuration support"); |
| 34 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 35 | /* RCU-protected (and cfg80211_mutex for writers) */ |
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 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 39 | DEFINE_MUTEX(cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 40 | |
| 41 | /* for debugfs */ |
| 42 | static struct dentry *ieee80211_debugfs_dir; |
| 43 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 44 | /* for the cleanup, scan and event works */ |
| 45 | struct workqueue_struct *cfg80211_wq; |
| 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; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [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 | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 185 | /* prohibit calling the thing phy%d when %d is not its number */ |
| 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 */ |
| 189 | digits = 1; |
| 190 | while (wiphy_idx /= 10) |
| 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) |
| 197 | return -EINVAL; |
| 198 | } |
| 199 | |
| 200 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 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 | 7623225 | 2010-10-11 14:46:52 -0400 | [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 | } |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 256 | |
| 257 | return err; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | wiphy_net_set(&rdev->wiphy, net); |
| 261 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 262 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
| 263 | WARN_ON(err); |
| 264 | |
| 265 | return 0; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 266 | } |
| 267 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 268 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 269 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 270 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 271 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 272 | rdev->ops->rfkill_poll(&rdev->wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 276 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 277 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 278 | struct wireless_dev *wdev; |
| 279 | |
| 280 | if (!blocked) |
| 281 | return 0; |
| 282 | |
| 283 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 284 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 285 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 286 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 287 | dev_close(wdev->netdev); |
| 288 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 289 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 290 | rtnl_unlock(); |
| 291 | |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 296 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 297 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 298 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 299 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 300 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 301 | } |
| 302 | |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 303 | static void cfg80211_event_work(struct work_struct *work) |
| 304 | { |
| 305 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 306 | |
| 307 | rdev = container_of(work, struct cfg80211_registered_device, |
| 308 | event_work); |
| 309 | |
| 310 | rtnl_lock(); |
| 311 | cfg80211_lock_rdev(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 312 | |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 313 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 314 | cfg80211_unlock_rdev(rdev); |
| 315 | rtnl_unlock(); |
| 316 | } |
| 317 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 318 | /* exported functions */ |
| 319 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 320 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 321 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 322 | static int wiphy_counter; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 323 | |
| 324 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 325 | int alloc_size; |
| 326 | |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 327 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 328 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 329 | WARN_ON(ops->connect && !ops->disconnect); |
| 330 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 331 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 332 | WARN_ON(ops->add_station && !ops->del_station); |
| 333 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 334 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 335 | alloc_size = sizeof(*rdev) + sizeof_priv; |
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 = kzalloc(alloc_size, GFP_KERNEL); |
| 338 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 339 | return NULL; |
| 340 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 341 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 342 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 343 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 344 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 345 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 346 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 347 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 348 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 349 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 350 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 351 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 352 | return NULL; |
| 353 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 354 | |
Ben Greear | 5a254ff | 2010-09-27 09:07:26 -0700 | [diff] [blame] | 355 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 356 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 357 | /* give it a proper name */ |
| 358 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
| 359 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 360 | mutex_init(&rdev->mtx); |
| 361 | mutex_init(&rdev->devlist_mtx); |
| 362 | INIT_LIST_HEAD(&rdev->netdev_list); |
| 363 | spin_lock_init(&rdev->bss_lock); |
| 364 | INIT_LIST_HEAD(&rdev->bss_list); |
| 365 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 366 | |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 367 | #ifdef CONFIG_CFG80211_WEXT |
| 368 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 369 | #endif |
| 370 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 371 | device_initialize(&rdev->wiphy.dev); |
| 372 | rdev->wiphy.dev.class = &ieee80211_class; |
| 373 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 374 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 375 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 376 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 377 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 378 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 379 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 380 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 381 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 382 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 383 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 384 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 385 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 386 | if (!rdev->rfkill) { |
| 387 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 388 | return NULL; |
| 389 | } |
| 390 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 391 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 392 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 393 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 394 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 395 | init_waitqueue_head(&rdev->dev_wait); |
| 396 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 397 | /* |
| 398 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 399 | * Fragmentation and RTS threshold are disabled by default with the |
| 400 | * special -1 value. |
| 401 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 402 | rdev->wiphy.retry_short = 7; |
| 403 | rdev->wiphy.retry_long = 4; |
| 404 | rdev->wiphy.frag_threshold = (u32) -1; |
| 405 | rdev->wiphy.rts_threshold = (u32) -1; |
Lukáš Turek | 81077e8 | 2009-12-21 22:50:47 +0100 | [diff] [blame] | 406 | rdev->wiphy.coverage_class = 0; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 407 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 408 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 409 | } |
| 410 | EXPORT_SYMBOL(wiphy_new); |
| 411 | |
| 412 | int wiphy_register(struct wiphy *wiphy) |
| 413 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 414 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 415 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 416 | enum ieee80211_band band; |
| 417 | struct ieee80211_supported_band *sband; |
| 418 | bool have_band = false; |
| 419 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 420 | u16 ifmodes = wiphy->interface_modes; |
| 421 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 422 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
| 423 | return -EINVAL; |
| 424 | |
| 425 | if (WARN_ON(wiphy->addresses && |
| 426 | !is_zero_ether_addr(wiphy->perm_addr) && |
| 427 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, |
| 428 | ETH_ALEN))) |
| 429 | return -EINVAL; |
| 430 | |
| 431 | if (wiphy->addresses) |
| 432 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); |
| 433 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 434 | /* sanity check ifmodes */ |
| 435 | WARN_ON(!ifmodes); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 436 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 437 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 438 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 439 | |
| 440 | /* sanity check supported bands/channels */ |
| 441 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 442 | sband = wiphy->bands[band]; |
| 443 | if (!sband) |
| 444 | continue; |
| 445 | |
| 446 | sband->band = band; |
| 447 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 448 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 449 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 450 | |
| 451 | /* |
| 452 | * Since we use a u32 for rate bitmaps in |
| 453 | * ieee80211_get_response_rate, we cannot |
| 454 | * have more than 32 legacy rates. |
| 455 | */ |
| 456 | if (WARN_ON(sband->n_bitrates > 32)) |
| 457 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 458 | |
| 459 | for (i = 0; i < sband->n_channels; i++) { |
| 460 | sband->channels[i].orig_flags = |
| 461 | sband->channels[i].flags; |
| 462 | sband->channels[i].orig_mag = |
| 463 | sband->channels[i].max_antenna_gain; |
| 464 | sband->channels[i].orig_mpwr = |
| 465 | sband->channels[i].max_power; |
| 466 | sband->channels[i].band = band; |
| 467 | } |
| 468 | |
| 469 | have_band = true; |
| 470 | } |
| 471 | |
| 472 | if (!have_band) { |
| 473 | WARN_ON(1); |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | /* check and set up bitrates */ |
| 478 | ieee80211_set_bitrate_flags(wiphy); |
| 479 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 480 | mutex_lock(&cfg80211_mutex); |
| 481 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 482 | res = device_add(&rdev->wiphy.dev); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 483 | if (res) { |
| 484 | mutex_unlock(&cfg80211_mutex); |
| 485 | return res; |
| 486 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 487 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 488 | /* set up regulatory info */ |
| 489 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); |
| 490 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 491 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 492 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 493 | |
| 494 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 495 | rdev->wiphy.debugfsdir = |
| 496 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 497 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 498 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 499 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 500 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 501 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 502 | struct regulatory_request request; |
| 503 | |
| 504 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 505 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 506 | request.alpha2[0] = '9'; |
| 507 | request.alpha2[1] = '9'; |
| 508 | |
| 509 | nl80211_send_reg_change_event(&request); |
| 510 | } |
| 511 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 512 | cfg80211_debugfs_rdev_add(rdev); |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 513 | mutex_unlock(&cfg80211_mutex); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 514 | |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 515 | /* |
| 516 | * due to a locking dependency this has to be outside of the |
| 517 | * cfg80211_mutex lock |
| 518 | */ |
| 519 | res = rfkill_register(rdev->rfkill); |
| 520 | if (res) |
| 521 | goto out_rm_dev; |
| 522 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 523 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 524 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 525 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 526 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 527 | return res; |
| 528 | } |
| 529 | EXPORT_SYMBOL(wiphy_register); |
| 530 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 531 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 532 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 533 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 534 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 535 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 536 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 537 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 538 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 539 | } |
| 540 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 541 | |
| 542 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 543 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 544 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 545 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 546 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 547 | } |
| 548 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 549 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 550 | void wiphy_unregister(struct wiphy *wiphy) |
| 551 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 552 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 553 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 554 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 555 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 556 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 557 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 558 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 559 | wait_event(rdev->dev_wait, ({ |
| 560 | int __count; |
| 561 | mutex_lock(&rdev->devlist_mtx); |
| 562 | __count = rdev->opencount; |
| 563 | mutex_unlock(&rdev->devlist_mtx); |
| 564 | __count == 0;})); |
| 565 | |
| 566 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 567 | BUG_ON(!list_empty(&rdev->netdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 568 | mutex_unlock(&rdev->devlist_mtx); |
| 569 | |
| 570 | /* |
| 571 | * First remove the hardware from everywhere, this makes |
| 572 | * it impossible to find from userspace. |
| 573 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 574 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 575 | list_del_rcu(&rdev->list); |
| 576 | synchronize_rcu(); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 577 | |
| 578 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 579 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 580 | * hopefully the driver will refuse it since it's tearing |
| 581 | * down the device already. We wait for this command to complete |
| 582 | * before unlinking the item from the list. |
| 583 | * 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] | 584 | * a virtual interface is still present. Hence, we can only get |
| 585 | * to lock contention here if userspace issues a command that |
| 586 | * identified the hardware by wiphy index. |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 587 | */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 588 | cfg80211_lock_rdev(rdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 589 | /* nothing */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 590 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 591 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 592 | /* If this device got a regulatory hint tell core its |
| 593 | * free to listen now to a new shiny device regulatory hint */ |
| 594 | reg_device_remove(wiphy); |
| 595 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 596 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 597 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 598 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 599 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 600 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 601 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 602 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 603 | flush_work(&rdev->event_work); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 604 | } |
| 605 | EXPORT_SYMBOL(wiphy_unregister); |
| 606 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 607 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 608 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 609 | struct cfg80211_internal_bss *scan, *tmp; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 610 | rfkill_destroy(rdev->rfkill); |
| 611 | mutex_destroy(&rdev->mtx); |
| 612 | mutex_destroy(&rdev->devlist_mtx); |
| 613 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 78c1c7e | 2009-02-10 21:25:57 +0100 | [diff] [blame] | 614 | cfg80211_put_bss(&scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 615 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | void wiphy_free(struct wiphy *wiphy) |
| 619 | { |
| 620 | put_device(&wiphy->dev); |
| 621 | } |
| 622 | EXPORT_SYMBOL(wiphy_free); |
| 623 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 624 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 625 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 626 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 627 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 628 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 629 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 630 | } |
| 631 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 632 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 633 | static void wdev_cleanup_work(struct work_struct *work) |
| 634 | { |
| 635 | struct wireless_dev *wdev; |
| 636 | struct cfg80211_registered_device *rdev; |
| 637 | |
| 638 | wdev = container_of(work, struct wireless_dev, cleanup_work); |
| 639 | rdev = wiphy_to_dev(wdev->wiphy); |
| 640 | |
| 641 | cfg80211_lock_rdev(rdev); |
| 642 | |
| 643 | if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { |
| 644 | rdev->scan_req->aborted = true; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 645 | ___cfg80211_scan_done(rdev, true); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | cfg80211_unlock_rdev(rdev); |
| 649 | |
| 650 | mutex_lock(&rdev->devlist_mtx); |
| 651 | rdev->opencount--; |
| 652 | mutex_unlock(&rdev->devlist_mtx); |
| 653 | wake_up(&rdev->dev_wait); |
| 654 | |
| 655 | dev_put(wdev->netdev); |
| 656 | } |
| 657 | |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 658 | static struct device_type wiphy_type = { |
| 659 | .name = "wlan", |
| 660 | }; |
| 661 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 662 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
| 663 | unsigned long state, |
| 664 | void *ndev) |
| 665 | { |
| 666 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 667 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 668 | struct cfg80211_registered_device *rdev; |
| 669 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 670 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 671 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 672 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 673 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 674 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 675 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 676 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 677 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 678 | case NETDEV_POST_INIT: |
| 679 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 680 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 681 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 682 | /* |
| 683 | * NB: cannot take rdev->mtx here because this may be |
| 684 | * called within code protected by it when interfaces |
| 685 | * are added with nl80211. |
| 686 | */ |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 687 | mutex_init(&wdev->mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 688 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 689 | INIT_LIST_HEAD(&wdev->event_list); |
| 690 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 691 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
| 692 | spin_lock_init(&wdev->mgmt_registrations_lock); |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 693 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 694 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 695 | list_add_rcu(&wdev->list, &rdev->netdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 696 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 697 | /* can only change netns with wiphy */ |
| 698 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 699 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 700 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 701 | "phy80211")) { |
| 702 | printk(KERN_ERR "wireless: failed to add phy80211 " |
| 703 | "symlink to netdev!\n"); |
| 704 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 705 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 706 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 707 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 708 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 709 | wdev->wext.default_key = -1; |
| 710 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 711 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 712 | #endif |
| 713 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 714 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 715 | wdev->ps = true; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 716 | else |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 717 | wdev->ps = false; |
Juuso Oikarinen | 9043f3b | 2010-04-27 12:47:41 +0300 | [diff] [blame] | 718 | /* allow mac80211 to determine the timeout */ |
| 719 | wdev->ps_timeout = -1; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 720 | if (rdev->ops->set_power_mgmt) |
| 721 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 722 | wdev->ps, |
| 723 | wdev->ps_timeout)) { |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 724 | /* assume this means it's off */ |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 725 | wdev->ps = false; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 726 | } |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 727 | |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 728 | if (!dev->ethtool_ops) |
| 729 | dev->ethtool_ops = &cfg80211_ethtool_ops; |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 730 | |
| 731 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 732 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 733 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
| 734 | dev->priv_flags |= IFF_DONT_BRIDGE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 735 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 736 | case NETDEV_GOING_DOWN: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 737 | switch (wdev->iftype) { |
| 738 | case NL80211_IFTYPE_ADHOC: |
| 739 | cfg80211_leave_ibss(rdev, dev, true); |
| 740 | break; |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 741 | case NL80211_IFTYPE_P2P_CLIENT: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 742 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 743 | wdev_lock(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 744 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 745 | kfree(wdev->wext.ie); |
| 746 | wdev->wext.ie = NULL; |
| 747 | wdev->wext.ie_len = 0; |
Johannes Berg | 0eb1464 | 2009-07-02 15:49:03 +0200 | [diff] [blame] | 748 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 749 | #endif |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 750 | __cfg80211_disconnect(rdev, dev, |
| 751 | WLAN_REASON_DEAUTH_LEAVING, true); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame] | 752 | cfg80211_mlme_down(rdev, dev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 753 | wdev_unlock(wdev); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 754 | break; |
| 755 | default: |
| 756 | break; |
| 757 | } |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 758 | break; |
| 759 | case NETDEV_DOWN: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 760 | dev_hold(dev); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 761 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 762 | break; |
| 763 | case NETDEV_UP: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 764 | /* |
| 765 | * If we have a really quick DOWN/UP succession we may |
| 766 | * have this work still pending ... cancel it and see |
| 767 | * if it was pending, in which case we need to account |
| 768 | * for some of the work it would have done. |
| 769 | */ |
| 770 | if (cancel_work_sync(&wdev->cleanup_work)) { |
| 771 | mutex_lock(&rdev->devlist_mtx); |
| 772 | rdev->opencount--; |
| 773 | mutex_unlock(&rdev->devlist_mtx); |
| 774 | dev_put(dev); |
| 775 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 776 | cfg80211_lock_rdev(rdev); |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 777 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 8c5d980 | 2010-01-11 16:14:57 +0100 | [diff] [blame] | 778 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 779 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 780 | switch (wdev->iftype) { |
| 781 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 782 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 783 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 784 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 785 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 786 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 787 | default: |
| 788 | break; |
| 789 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 790 | wdev_unlock(wdev); |
Johannes Berg | 8c5d980 | 2010-01-11 16:14:57 +0100 | [diff] [blame] | 791 | #endif |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 792 | rdev->opencount++; |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 793 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 794 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 795 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 796 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 797 | /* |
| 798 | * NB: cannot take rdev->mtx here because this may be |
| 799 | * called within code protected by it when interfaces |
| 800 | * are removed with nl80211. |
| 801 | */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 802 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 803 | /* |
| 804 | * It is possible to get NETDEV_UNREGISTER |
| 805 | * multiple times. To detect that, check |
| 806 | * that the interface is still on the list |
| 807 | * of registered interfaces, and only then |
| 808 | * remove and clean it up. |
| 809 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 810 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 811 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 812 | list_del_rcu(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 813 | rdev->devlist_generation++; |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 814 | cfg80211_mlme_purge_registrations(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 815 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 816 | kfree(wdev->wext.keys); |
| 817 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 818 | } |
| 819 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 820 | /* |
| 821 | * synchronise (so that we won't find this netdev |
| 822 | * from other code any more) and then clear the list |
| 823 | * head so that the above code can safely check for |
| 824 | * !list_empty() to avoid double-cleanup. |
| 825 | */ |
| 826 | synchronize_rcu(); |
| 827 | INIT_LIST_HEAD(&wdev->list); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 828 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 829 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 830 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 831 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 832 | if (rfkill_blocked(rdev->rfkill)) |
| 833 | return notifier_from_errno(-ERFKILL); |
| 834 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 835 | } |
| 836 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 837 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | static struct notifier_block cfg80211_netdev_notifier = { |
| 841 | .notifier_call = cfg80211_netdev_notifier_call, |
| 842 | }; |
| 843 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 844 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 845 | { |
| 846 | struct cfg80211_registered_device *rdev; |
| 847 | |
| 848 | rtnl_lock(); |
| 849 | mutex_lock(&cfg80211_mutex); |
| 850 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 851 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 852 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 853 | } |
| 854 | mutex_unlock(&cfg80211_mutex); |
| 855 | rtnl_unlock(); |
| 856 | } |
| 857 | |
| 858 | static struct pernet_operations cfg80211_pernet_ops = { |
| 859 | .exit = cfg80211_pernet_exit, |
| 860 | }; |
| 861 | |
| 862 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 863 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 864 | int err; |
| 865 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 866 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 867 | if (err) |
| 868 | goto out_fail_pernet; |
| 869 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 870 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 871 | if (err) |
| 872 | goto out_fail_sysfs; |
| 873 | |
| 874 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 875 | if (err) |
| 876 | goto out_fail_notifier; |
| 877 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 878 | err = nl80211_init(); |
| 879 | if (err) |
| 880 | goto out_fail_nl80211; |
| 881 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 882 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 883 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 884 | err = regulatory_init(); |
| 885 | if (err) |
| 886 | goto out_fail_reg; |
| 887 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 888 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
| 889 | if (!cfg80211_wq) |
| 890 | goto out_fail_wq; |
| 891 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 892 | return 0; |
| 893 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 894 | out_fail_wq: |
| 895 | regulatory_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 896 | out_fail_reg: |
| 897 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 898 | out_fail_nl80211: |
| 899 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 900 | out_fail_notifier: |
| 901 | wiphy_sysfs_exit(); |
| 902 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 903 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 904 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 905 | return err; |
| 906 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 907 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 908 | |
Uwe Kleine-König | f884e38 | 2010-06-18 09:38:54 +0200 | [diff] [blame] | 909 | static void __exit cfg80211_exit(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 910 | { |
| 911 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 912 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 913 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 914 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 915 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 916 | unregister_pernet_device(&cfg80211_pernet_ops); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 917 | destroy_workqueue(cfg80211_wq); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 918 | } |
| 919 | module_exit(cfg80211_exit); |