Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This is the linux wireless configuration interface. |
| 3 | * |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 8 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 9 | #include <linux/if.h> |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/err.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 12 | #include <linux/list.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 14 | #include <linux/nl80211.h> |
| 15 | #include <linux/debugfs.h> |
| 16 | #include <linux/notifier.h> |
| 17 | #include <linux/device.h> |
Zhu Yi | 16a832e | 2009-08-19 16:08:22 +0800 | [diff] [blame] | 18 | #include <linux/etherdevice.h> |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 19 | #include <linux/rtnetlink.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 20 | #include <linux/sched.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 21 | #include <net/genetlink.h> |
| 22 | #include <net/cfg80211.h> |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 23 | #include "nl80211.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 24 | #include "core.h" |
| 25 | #include "sysfs.h" |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 26 | #include "debugfs.h" |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 27 | #include "wext-compat.h" |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 28 | #include "ethtool.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 29 | |
| 30 | /* name for sysfs, %d is appended */ |
| 31 | #define PHY_NAME "phy" |
| 32 | |
| 33 | MODULE_AUTHOR("Johannes Berg"); |
| 34 | MODULE_LICENSE("GPL"); |
| 35 | MODULE_DESCRIPTION("wireless configuration support"); |
| 36 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 37 | /* RCU-protected (and cfg80211_mutex for writers) */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 38 | LIST_HEAD(cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 39 | int cfg80211_rdev_list_generation; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 40 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 41 | DEFINE_MUTEX(cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 42 | |
| 43 | /* for debugfs */ |
| 44 | static struct dentry *ieee80211_debugfs_dir; |
| 45 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 46 | /* for the cleanup, scan and event works */ |
| 47 | struct workqueue_struct *cfg80211_wq; |
| 48 | |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 49 | static bool cfg80211_disable_40mhz_24ghz; |
| 50 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); |
| 51 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, |
| 52 | "Disable 40MHz support in the 2.4GHz band"); |
| 53 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 54 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 55 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 56 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 57 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 58 | |
Luis R. Rodriguez | 85fd129 | 2009-02-21 00:04:20 -0500 | [diff] [blame] | 59 | if (!wiphy_idx_valid(wiphy_idx)) |
| 60 | return NULL; |
| 61 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 62 | assert_cfg80211_lock(); |
| 63 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 64 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 65 | if (rdev->wiphy_idx == wiphy_idx) { |
| 66 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 67 | break; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | return result; |
| 72 | } |
| 73 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 74 | int get_wiphy_idx(struct wiphy *wiphy) |
| 75 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 76 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 77 | if (!wiphy) |
| 78 | return WIPHY_IDX_STALE; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 79 | rdev = wiphy_to_dev(wiphy); |
| 80 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 81 | } |
| 82 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 83 | /* requires cfg80211_rdev_mutex to be held! */ |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 84 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
| 85 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 86 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 87 | |
| 88 | if (!wiphy_idx_valid(wiphy_idx)) |
| 89 | return NULL; |
| 90 | |
| 91 | assert_cfg80211_lock(); |
| 92 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 93 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 94 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 95 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 96 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 97 | } |
| 98 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 99 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 100 | struct cfg80211_registered_device * |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 101 | __cfg80211_rdev_from_info(struct genl_info *info) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 102 | { |
| 103 | int ifindex; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 104 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 105 | struct net_device *dev; |
| 106 | int err = -EINVAL; |
| 107 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 108 | assert_cfg80211_lock(); |
| 109 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 110 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 111 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 112 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
| 113 | err = -ENODEV; |
| 114 | } |
| 115 | |
| 116 | if (info->attrs[NL80211_ATTR_IFINDEX]) { |
| 117 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 118 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 119 | if (dev) { |
| 120 | if (dev->ieee80211_ptr) |
| 121 | byifidx = |
| 122 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 123 | dev_put(dev); |
| 124 | } |
| 125 | err = -ENODEV; |
| 126 | } |
| 127 | |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 128 | if (bywiphyidx && byifidx) { |
| 129 | if (bywiphyidx != byifidx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 130 | return ERR_PTR(-EINVAL); |
| 131 | else |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 132 | return bywiphyidx; /* == byifidx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 133 | } |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 134 | if (bywiphyidx) |
| 135 | return bywiphyidx; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 136 | |
| 137 | if (byifidx) |
| 138 | return byifidx; |
| 139 | |
| 140 | return ERR_PTR(err); |
| 141 | } |
| 142 | |
| 143 | struct cfg80211_registered_device * |
| 144 | cfg80211_get_dev_from_info(struct genl_info *info) |
| 145 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 146 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 147 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 148 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 149 | rdev = __cfg80211_rdev_from_info(info); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 150 | |
| 151 | /* if it is not an error we grab the lock on |
| 152 | * it to assure it won't be going away while |
| 153 | * we operate on it */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 154 | if (!IS_ERR(rdev)) |
| 155 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 156 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 157 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 158 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 159 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | struct cfg80211_registered_device * |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 163 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 164 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 165 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 166 | struct net_device *dev; |
| 167 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 168 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 169 | dev = dev_get_by_index(net, ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 170 | if (!dev) |
| 171 | goto out; |
| 172 | if (dev->ieee80211_ptr) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 173 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 174 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 175 | } else |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 176 | rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 177 | dev_put(dev); |
| 178 | out: |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 179 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 180 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 181 | } |
| 182 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 183 | /* requires cfg80211_mutex to be held */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 184 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 185 | char *newname) |
| 186 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 187 | struct cfg80211_registered_device *rdev2; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 188 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 189 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 190 | assert_cfg80211_lock(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 191 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 192 | /* prohibit calling the thing phy%d when %d is not its number */ |
| 193 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 194 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 195 | /* count number of places needed to print wiphy_idx */ |
| 196 | digits = 1; |
| 197 | while (wiphy_idx /= 10) |
| 198 | digits++; |
| 199 | /* |
| 200 | * deny the name if it is phy<idx> where <idx> is printed |
| 201 | * without leading zeroes. taken == strlen(newname) here |
| 202 | */ |
| 203 | if (taken == strlen(PHY_NAME) + digits) |
| 204 | return -EINVAL; |
| 205 | } |
| 206 | |
| 207 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 208 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 209 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 210 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 211 | |
| 212 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 213 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 214 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 215 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 216 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 217 | result = device_rename(&rdev->wiphy.dev, newname); |
| 218 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 219 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 220 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 221 | if (rdev->wiphy.debugfsdir && |
| 222 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 223 | rdev->wiphy.debugfsdir, |
| 224 | rdev->wiphy.debugfsdir->d_parent, |
| 225 | newname)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 226 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 227 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 228 | nl80211_notify_dev_rename(rdev); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 229 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 230 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 231 | } |
| 232 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 233 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 234 | struct net *net) |
| 235 | { |
| 236 | struct wireless_dev *wdev; |
| 237 | int err = 0; |
| 238 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 239 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 240 | return -EOPNOTSUPP; |
| 241 | |
| 242 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
| 243 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 244 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 245 | if (err) |
| 246 | break; |
| 247 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 248 | } |
| 249 | |
| 250 | if (err) { |
| 251 | /* failed -- clean up to old netns */ |
| 252 | net = wiphy_net(&rdev->wiphy); |
| 253 | |
| 254 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, |
| 255 | list) { |
| 256 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 257 | err = dev_change_net_namespace(wdev->netdev, net, |
| 258 | "wlan%d"); |
| 259 | WARN_ON(err); |
| 260 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 261 | } |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 262 | |
| 263 | return err; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | wiphy_net_set(&rdev->wiphy, net); |
| 267 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 268 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
| 269 | WARN_ON(err); |
| 270 | |
| 271 | return 0; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 272 | } |
| 273 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 274 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 275 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 276 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 277 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 278 | rdev->ops->rfkill_poll(&rdev->wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 282 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 283 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 284 | struct wireless_dev *wdev; |
| 285 | |
| 286 | if (!blocked) |
| 287 | return 0; |
| 288 | |
| 289 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 290 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 291 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 292 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 293 | dev_close(wdev->netdev); |
| 294 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 295 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 296 | rtnl_unlock(); |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 302 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 303 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 304 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 305 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 306 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 307 | } |
| 308 | |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 309 | static void cfg80211_event_work(struct work_struct *work) |
| 310 | { |
| 311 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 312 | |
| 313 | rdev = container_of(work, struct cfg80211_registered_device, |
| 314 | event_work); |
| 315 | |
| 316 | rtnl_lock(); |
| 317 | cfg80211_lock_rdev(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 318 | |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 319 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 320 | cfg80211_unlock_rdev(rdev); |
| 321 | rtnl_unlock(); |
| 322 | } |
| 323 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 324 | /* exported functions */ |
| 325 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 326 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 327 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 328 | static int wiphy_counter; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 329 | |
| 330 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 331 | int alloc_size; |
| 332 | |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 333 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 334 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 335 | WARN_ON(ops->connect && !ops->disconnect); |
| 336 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 337 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 338 | WARN_ON(ops->add_station && !ops->del_station); |
| 339 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 340 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 341 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 342 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 343 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 344 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 345 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 346 | return NULL; |
| 347 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 348 | rdev->ops = ops; |
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_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 351 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 352 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 353 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 354 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 355 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 356 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 357 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 358 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 359 | return NULL; |
| 360 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 361 | |
Ben Greear | 5a254ff | 2010-09-27 09:07:26 -0700 | [diff] [blame] | 362 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 363 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 364 | /* give it a proper name */ |
| 365 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
| 366 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 367 | mutex_init(&rdev->mtx); |
| 368 | mutex_init(&rdev->devlist_mtx); |
| 369 | INIT_LIST_HEAD(&rdev->netdev_list); |
| 370 | spin_lock_init(&rdev->bss_lock); |
| 371 | INIT_LIST_HEAD(&rdev->bss_list); |
| 372 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 373 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 374 | #ifdef CONFIG_CFG80211_WEXT |
| 375 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 376 | #endif |
| 377 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 378 | device_initialize(&rdev->wiphy.dev); |
| 379 | rdev->wiphy.dev.class = &ieee80211_class; |
| 380 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 381 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 382 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 383 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 384 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 385 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 386 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 387 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 388 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 389 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 390 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 391 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 392 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 393 | if (!rdev->rfkill) { |
| 394 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 395 | return NULL; |
| 396 | } |
| 397 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 398 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 399 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 400 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 401 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 402 | init_waitqueue_head(&rdev->dev_wait); |
| 403 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 404 | /* |
| 405 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 406 | * Fragmentation and RTS threshold are disabled by default with the |
| 407 | * special -1 value. |
| 408 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 409 | rdev->wiphy.retry_short = 7; |
| 410 | rdev->wiphy.retry_long = 4; |
| 411 | rdev->wiphy.frag_threshold = (u32) -1; |
| 412 | rdev->wiphy.rts_threshold = (u32) -1; |
Lukáš Turek | 81077e8 | 2009-12-21 22:50:47 +0100 | [diff] [blame] | 413 | rdev->wiphy.coverage_class = 0; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 414 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 415 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 416 | } |
| 417 | EXPORT_SYMBOL(wiphy_new); |
| 418 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame^] | 419 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
| 420 | { |
| 421 | const struct ieee80211_iface_combination *c; |
| 422 | int i, j; |
| 423 | |
| 424 | /* If we have combinations enforce them */ |
| 425 | if (wiphy->n_iface_combinations) |
| 426 | wiphy->flags |= WIPHY_FLAG_ENFORCE_COMBINATIONS; |
| 427 | |
| 428 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
| 429 | u32 cnt = 0; |
| 430 | u16 all_iftypes = 0; |
| 431 | |
| 432 | c = &wiphy->iface_combinations[i]; |
| 433 | |
| 434 | /* Combinations with just one interface aren't real */ |
| 435 | if (WARN_ON(c->max_interfaces < 2)) |
| 436 | return -EINVAL; |
| 437 | |
| 438 | /* Need at least one channel */ |
| 439 | if (WARN_ON(!c->num_different_channels)) |
| 440 | return -EINVAL; |
| 441 | |
| 442 | if (WARN_ON(!c->n_limits)) |
| 443 | return -EINVAL; |
| 444 | |
| 445 | for (j = 0; j < c->n_limits; j++) { |
| 446 | u16 types = c->limits[j].types; |
| 447 | |
| 448 | /* |
| 449 | * interface types shouldn't overlap, this is |
| 450 | * used in cfg80211_can_change_interface() |
| 451 | */ |
| 452 | if (WARN_ON(types & all_iftypes)) |
| 453 | return -EINVAL; |
| 454 | all_iftypes |= types; |
| 455 | |
| 456 | if (WARN_ON(!c->limits[j].max)) |
| 457 | return -EINVAL; |
| 458 | |
| 459 | /* Shouldn't list software iftypes in combinations! */ |
| 460 | if (WARN_ON(wiphy->software_iftypes & types)) |
| 461 | return -EINVAL; |
| 462 | |
| 463 | cnt += c->limits[j].max; |
| 464 | /* |
| 465 | * Don't advertise an unsupported type |
| 466 | * in a combination. |
| 467 | */ |
| 468 | if (WARN_ON((wiphy->interface_modes & types) != types)) |
| 469 | return -EINVAL; |
| 470 | } |
| 471 | |
| 472 | /* You can't even choose that many! */ |
| 473 | if (WARN_ON(cnt < c->max_interfaces)) |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | return 0; |
| 478 | } |
| 479 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 480 | int wiphy_register(struct wiphy *wiphy) |
| 481 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 482 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 483 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 484 | enum ieee80211_band band; |
| 485 | struct ieee80211_supported_band *sband; |
| 486 | bool have_band = false; |
| 487 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 488 | u16 ifmodes = wiphy->interface_modes; |
| 489 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 490 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
| 491 | return -EINVAL; |
| 492 | |
| 493 | if (WARN_ON(wiphy->addresses && |
| 494 | !is_zero_ether_addr(wiphy->perm_addr) && |
| 495 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, |
| 496 | ETH_ALEN))) |
| 497 | return -EINVAL; |
| 498 | |
| 499 | if (wiphy->addresses) |
| 500 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); |
| 501 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 502 | /* sanity check ifmodes */ |
| 503 | WARN_ON(!ifmodes); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 504 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 505 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 506 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 507 | |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame^] | 508 | res = wiphy_verify_combinations(wiphy); |
| 509 | if (res) |
| 510 | return res; |
| 511 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 512 | /* sanity check supported bands/channels */ |
| 513 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 514 | sband = wiphy->bands[band]; |
| 515 | if (!sband) |
| 516 | continue; |
| 517 | |
| 518 | sband->band = band; |
| 519 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 520 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 521 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 522 | |
| 523 | /* |
Amitkumar Karwar | 40db6c7 | 2011-04-21 14:10:27 -0700 | [diff] [blame] | 524 | * Since cfg80211_disable_40mhz_24ghz is global, we can |
| 525 | * modify the sband's ht data even if the driver uses a |
| 526 | * global structure for that. |
| 527 | */ |
| 528 | if (cfg80211_disable_40mhz_24ghz && |
| 529 | band == IEEE80211_BAND_2GHZ && |
| 530 | sband->ht_cap.ht_supported) { |
| 531 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| 532 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 533 | } |
| 534 | |
| 535 | /* |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 536 | * Since we use a u32 for rate bitmaps in |
| 537 | * ieee80211_get_response_rate, we cannot |
| 538 | * have more than 32 legacy rates. |
| 539 | */ |
| 540 | if (WARN_ON(sband->n_bitrates > 32)) |
| 541 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 542 | |
| 543 | for (i = 0; i < sband->n_channels; i++) { |
| 544 | sband->channels[i].orig_flags = |
| 545 | sband->channels[i].flags; |
| 546 | sband->channels[i].orig_mag = |
| 547 | sband->channels[i].max_antenna_gain; |
| 548 | sband->channels[i].orig_mpwr = |
| 549 | sband->channels[i].max_power; |
| 550 | sband->channels[i].band = band; |
| 551 | } |
| 552 | |
| 553 | have_band = true; |
| 554 | } |
| 555 | |
| 556 | if (!have_band) { |
| 557 | WARN_ON(1); |
| 558 | return -EINVAL; |
| 559 | } |
| 560 | |
Johannes Berg | ff1b6e6 | 2011-05-04 15:37:28 +0200 | [diff] [blame] | 561 | if (rdev->wiphy.wowlan.n_patterns) { |
| 562 | if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len || |
| 563 | rdev->wiphy.wowlan.pattern_min_len > |
| 564 | rdev->wiphy.wowlan.pattern_max_len)) |
| 565 | return -EINVAL; |
| 566 | } |
| 567 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 568 | /* check and set up bitrates */ |
| 569 | ieee80211_set_bitrate_flags(wiphy); |
| 570 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 571 | mutex_lock(&cfg80211_mutex); |
| 572 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 573 | res = device_add(&rdev->wiphy.dev); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 574 | if (res) { |
| 575 | mutex_unlock(&cfg80211_mutex); |
| 576 | return res; |
| 577 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 578 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 579 | /* set up regulatory info */ |
| 580 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); |
| 581 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 582 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 583 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 584 | |
| 585 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 586 | rdev->wiphy.debugfsdir = |
| 587 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 588 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 589 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 590 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 591 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 592 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 593 | struct regulatory_request request; |
| 594 | |
| 595 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 596 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 597 | request.alpha2[0] = '9'; |
| 598 | request.alpha2[1] = '9'; |
| 599 | |
| 600 | nl80211_send_reg_change_event(&request); |
| 601 | } |
| 602 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 603 | cfg80211_debugfs_rdev_add(rdev); |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 604 | mutex_unlock(&cfg80211_mutex); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 605 | |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 606 | /* |
| 607 | * due to a locking dependency this has to be outside of the |
| 608 | * cfg80211_mutex lock |
| 609 | */ |
| 610 | res = rfkill_register(rdev->rfkill); |
| 611 | if (res) |
| 612 | goto out_rm_dev; |
| 613 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 614 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 615 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 616 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 617 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 618 | return res; |
| 619 | } |
| 620 | EXPORT_SYMBOL(wiphy_register); |
| 621 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 622 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 623 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 624 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 625 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 626 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 627 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 628 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 629 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 630 | } |
| 631 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 632 | |
| 633 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 634 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 635 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 636 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 637 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 638 | } |
| 639 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 640 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 641 | void wiphy_unregister(struct wiphy *wiphy) |
| 642 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 643 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 644 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 645 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 646 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 647 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 648 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 649 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 650 | wait_event(rdev->dev_wait, ({ |
| 651 | int __count; |
| 652 | mutex_lock(&rdev->devlist_mtx); |
| 653 | __count = rdev->opencount; |
| 654 | mutex_unlock(&rdev->devlist_mtx); |
| 655 | __count == 0;})); |
| 656 | |
| 657 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 658 | BUG_ON(!list_empty(&rdev->netdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 659 | mutex_unlock(&rdev->devlist_mtx); |
| 660 | |
| 661 | /* |
| 662 | * First remove the hardware from everywhere, this makes |
| 663 | * it impossible to find from userspace. |
| 664 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 665 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 666 | list_del_rcu(&rdev->list); |
| 667 | synchronize_rcu(); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 668 | |
| 669 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 670 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 671 | * hopefully the driver will refuse it since it's tearing |
| 672 | * down the device already. We wait for this command to complete |
| 673 | * before unlinking the item from the list. |
| 674 | * 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] | 675 | * a virtual interface is still present. Hence, we can only get |
| 676 | * to lock contention here if userspace issues a command that |
| 677 | * identified the hardware by wiphy index. |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 678 | */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 679 | cfg80211_lock_rdev(rdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 680 | /* nothing */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 681 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 682 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 683 | /* If this device got a regulatory hint tell core its |
| 684 | * free to listen now to a new shiny device regulatory hint */ |
| 685 | reg_device_remove(wiphy); |
| 686 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 687 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 688 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 689 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 690 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 691 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 692 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 693 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 694 | flush_work(&rdev->event_work); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 695 | } |
| 696 | EXPORT_SYMBOL(wiphy_unregister); |
| 697 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 698 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 699 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 700 | struct cfg80211_internal_bss *scan, *tmp; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 701 | rfkill_destroy(rdev->rfkill); |
| 702 | mutex_destroy(&rdev->mtx); |
| 703 | mutex_destroy(&rdev->devlist_mtx); |
| 704 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 78c1c7e | 2009-02-10 21:25:57 +0100 | [diff] [blame] | 705 | cfg80211_put_bss(&scan->pub); |
Johannes Berg | ff1b6e6 | 2011-05-04 15:37:28 +0200 | [diff] [blame] | 706 | cfg80211_rdev_free_wowlan(rdev); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 707 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | void wiphy_free(struct wiphy *wiphy) |
| 711 | { |
| 712 | put_device(&wiphy->dev); |
| 713 | } |
| 714 | EXPORT_SYMBOL(wiphy_free); |
| 715 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 716 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 717 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 718 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 719 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 720 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 721 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 722 | } |
| 723 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 724 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 725 | static void wdev_cleanup_work(struct work_struct *work) |
| 726 | { |
| 727 | struct wireless_dev *wdev; |
| 728 | struct cfg80211_registered_device *rdev; |
| 729 | |
| 730 | wdev = container_of(work, struct wireless_dev, cleanup_work); |
| 731 | rdev = wiphy_to_dev(wdev->wiphy); |
| 732 | |
| 733 | cfg80211_lock_rdev(rdev); |
| 734 | |
| 735 | if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { |
| 736 | rdev->scan_req->aborted = true; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 737 | ___cfg80211_scan_done(rdev, true); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 738 | } |
| 739 | |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 740 | if (WARN_ON(rdev->sched_scan_req && |
| 741 | rdev->sched_scan_req->dev == wdev->netdev)) { |
| 742 | __cfg80211_stop_sched_scan(rdev, false); |
| 743 | } |
| 744 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 745 | cfg80211_unlock_rdev(rdev); |
| 746 | |
| 747 | mutex_lock(&rdev->devlist_mtx); |
| 748 | rdev->opencount--; |
| 749 | mutex_unlock(&rdev->devlist_mtx); |
| 750 | wake_up(&rdev->dev_wait); |
| 751 | |
| 752 | dev_put(wdev->netdev); |
| 753 | } |
| 754 | |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 755 | static struct device_type wiphy_type = { |
| 756 | .name = "wlan", |
| 757 | }; |
| 758 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 759 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
| 760 | unsigned long state, |
| 761 | void *ndev) |
| 762 | { |
| 763 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 764 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 765 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame^] | 766 | int ret; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 767 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 768 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 769 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 770 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 771 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 772 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 773 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 774 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 775 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 776 | case NETDEV_POST_INIT: |
| 777 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 778 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 779 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 780 | /* |
| 781 | * NB: cannot take rdev->mtx here because this may be |
| 782 | * called within code protected by it when interfaces |
| 783 | * are added with nl80211. |
| 784 | */ |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 785 | mutex_init(&wdev->mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 786 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 787 | INIT_LIST_HEAD(&wdev->event_list); |
| 788 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 789 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
| 790 | spin_lock_init(&wdev->mgmt_registrations_lock); |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 791 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 792 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 793 | list_add_rcu(&wdev->list, &rdev->netdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 794 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 795 | /* can only change netns with wiphy */ |
| 796 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 797 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 798 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 799 | "phy80211")) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 800 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 801 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 802 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 803 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 804 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 805 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 806 | wdev->wext.default_key = -1; |
| 807 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 808 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 809 | #endif |
| 810 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 811 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 812 | wdev->ps = true; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 813 | else |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 814 | wdev->ps = false; |
Juuso Oikarinen | 9043f3b | 2010-04-27 12:47:41 +0300 | [diff] [blame] | 815 | /* allow mac80211 to determine the timeout */ |
| 816 | wdev->ps_timeout = -1; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 817 | |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 818 | if (!dev->ethtool_ops) |
| 819 | dev->ethtool_ops = &cfg80211_ethtool_ops; |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 820 | |
| 821 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 822 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 823 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
| 824 | dev->priv_flags |= IFF_DONT_BRIDGE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 825 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 826 | case NETDEV_GOING_DOWN: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 827 | switch (wdev->iftype) { |
| 828 | case NL80211_IFTYPE_ADHOC: |
| 829 | cfg80211_leave_ibss(rdev, dev, true); |
| 830 | break; |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 831 | case NL80211_IFTYPE_P2P_CLIENT: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 832 | case NL80211_IFTYPE_STATION: |
Luciano Coelho | 807f8a8 | 2011-05-11 17:09:35 +0300 | [diff] [blame] | 833 | cfg80211_lock_rdev(rdev); |
| 834 | __cfg80211_stop_sched_scan(rdev, false); |
| 835 | cfg80211_unlock_rdev(rdev); |
| 836 | |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 837 | wdev_lock(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 838 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 839 | kfree(wdev->wext.ie); |
| 840 | wdev->wext.ie = NULL; |
| 841 | wdev->wext.ie_len = 0; |
Johannes Berg | 0eb1464 | 2009-07-02 15:49:03 +0200 | [diff] [blame] | 842 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 843 | #endif |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 844 | __cfg80211_disconnect(rdev, dev, |
| 845 | WLAN_REASON_DEAUTH_LEAVING, true); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame] | 846 | cfg80211_mlme_down(rdev, dev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 847 | wdev_unlock(wdev); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 848 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 849 | case NL80211_IFTYPE_MESH_POINT: |
| 850 | cfg80211_leave_mesh(rdev, dev); |
| 851 | break; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 852 | default: |
| 853 | break; |
| 854 | } |
Johannes Berg | 56d1893 | 2011-05-09 18:41:15 +0200 | [diff] [blame] | 855 | wdev->beacon_interval = 0; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 856 | break; |
| 857 | case NETDEV_DOWN: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 858 | dev_hold(dev); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 859 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 860 | break; |
| 861 | case NETDEV_UP: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 862 | /* |
| 863 | * If we have a really quick DOWN/UP succession we may |
| 864 | * have this work still pending ... cancel it and see |
| 865 | * if it was pending, in which case we need to account |
| 866 | * for some of the work it would have done. |
| 867 | */ |
| 868 | if (cancel_work_sync(&wdev->cleanup_work)) { |
| 869 | mutex_lock(&rdev->devlist_mtx); |
| 870 | rdev->opencount--; |
| 871 | mutex_unlock(&rdev->devlist_mtx); |
| 872 | dev_put(dev); |
| 873 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 874 | cfg80211_lock_rdev(rdev); |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 875 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 876 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 877 | switch (wdev->iftype) { |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 878 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 879 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 880 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 881 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 882 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 883 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 884 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 885 | #endif |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 886 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 887 | case NL80211_IFTYPE_MESH_POINT: |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 888 | { |
| 889 | /* backward compat code... */ |
| 890 | struct mesh_setup setup; |
| 891 | memcpy(&setup, &default_mesh_setup, |
| 892 | sizeof(setup)); |
| 893 | /* back compat only needed for mesh_id */ |
| 894 | setup.mesh_id = wdev->ssid; |
| 895 | setup.mesh_id_len = wdev->mesh_id_up_len; |
| 896 | if (wdev->mesh_id_up_len) |
| 897 | __cfg80211_join_mesh(rdev, dev, |
| 898 | &setup, |
| 899 | &default_mesh_config); |
| 900 | break; |
| 901 | } |
| 902 | #endif |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 903 | default: |
| 904 | break; |
| 905 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 906 | wdev_unlock(wdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 907 | rdev->opencount++; |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 908 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 909 | cfg80211_unlock_rdev(rdev); |
Juuso Oikarinen | bf6a057 | 2011-01-31 15:52:58 +0200 | [diff] [blame] | 910 | |
| 911 | /* |
| 912 | * Configure power management to the driver here so that its |
| 913 | * correctly set also after interface type changes etc. |
| 914 | */ |
| 915 | if (wdev->iftype == NL80211_IFTYPE_STATION && |
| 916 | rdev->ops->set_power_mgmt) |
| 917 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, |
| 918 | wdev->ps, |
| 919 | wdev->ps_timeout)) { |
| 920 | /* assume this means it's off */ |
| 921 | wdev->ps = false; |
| 922 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 923 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 924 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 925 | /* |
| 926 | * NB: cannot take rdev->mtx here because this may be |
| 927 | * called within code protected by it when interfaces |
| 928 | * are removed with nl80211. |
| 929 | */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 930 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 931 | /* |
| 932 | * It is possible to get NETDEV_UNREGISTER |
| 933 | * multiple times. To detect that, check |
| 934 | * that the interface is still on the list |
| 935 | * of registered interfaces, and only then |
| 936 | * remove and clean it up. |
| 937 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 938 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 939 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 940 | list_del_rcu(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 941 | rdev->devlist_generation++; |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 942 | cfg80211_mlme_purge_registrations(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 943 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 944 | kfree(wdev->wext.keys); |
| 945 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 946 | } |
| 947 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 948 | /* |
| 949 | * synchronise (so that we won't find this netdev |
| 950 | * from other code any more) and then clear the list |
| 951 | * head so that the above code can safely check for |
| 952 | * !list_empty() to avoid double-cleanup. |
| 953 | */ |
| 954 | synchronize_rcu(); |
| 955 | INIT_LIST_HEAD(&wdev->list); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 956 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 957 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 958 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 959 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 960 | if (rfkill_blocked(rdev->rfkill)) |
| 961 | return notifier_from_errno(-ERFKILL); |
Johannes Berg | 7527a78 | 2011-05-13 10:58:57 +0200 | [diff] [blame^] | 962 | ret = cfg80211_can_add_interface(rdev, wdev->iftype); |
| 963 | if (ret) |
| 964 | return notifier_from_errno(ret); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 965 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 966 | } |
| 967 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 968 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | static struct notifier_block cfg80211_netdev_notifier = { |
| 972 | .notifier_call = cfg80211_netdev_notifier_call, |
| 973 | }; |
| 974 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 975 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 976 | { |
| 977 | struct cfg80211_registered_device *rdev; |
| 978 | |
| 979 | rtnl_lock(); |
| 980 | mutex_lock(&cfg80211_mutex); |
| 981 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 982 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 983 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 984 | } |
| 985 | mutex_unlock(&cfg80211_mutex); |
| 986 | rtnl_unlock(); |
| 987 | } |
| 988 | |
| 989 | static struct pernet_operations cfg80211_pernet_ops = { |
| 990 | .exit = cfg80211_pernet_exit, |
| 991 | }; |
| 992 | |
| 993 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 994 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 995 | int err; |
| 996 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 997 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 998 | if (err) |
| 999 | goto out_fail_pernet; |
| 1000 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1001 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1002 | if (err) |
| 1003 | goto out_fail_sysfs; |
| 1004 | |
| 1005 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1006 | if (err) |
| 1007 | goto out_fail_notifier; |
| 1008 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1009 | err = nl80211_init(); |
| 1010 | if (err) |
| 1011 | goto out_fail_nl80211; |
| 1012 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1013 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 1014 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1015 | err = regulatory_init(); |
| 1016 | if (err) |
| 1017 | goto out_fail_reg; |
| 1018 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1019 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
| 1020 | if (!cfg80211_wq) |
| 1021 | goto out_fail_wq; |
| 1022 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1023 | return 0; |
| 1024 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1025 | out_fail_wq: |
| 1026 | regulatory_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1027 | out_fail_reg: |
| 1028 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1029 | out_fail_nl80211: |
| 1030 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1031 | out_fail_notifier: |
| 1032 | wiphy_sysfs_exit(); |
| 1033 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1034 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 1035 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1036 | return err; |
| 1037 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 1038 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1039 | |
Uwe Kleine-König | f884e38 | 2010-06-18 09:38:54 +0200 | [diff] [blame] | 1040 | static void __exit cfg80211_exit(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1041 | { |
| 1042 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1043 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1044 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 1045 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1046 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 1047 | unregister_pernet_device(&cfg80211_pernet_ops); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 1048 | destroy_workqueue(cfg80211_wq); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1049 | } |
| 1050 | module_exit(cfg80211_exit); |