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 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 49 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 50 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 51 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 52 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 53 | |
Luis R. Rodriguez | 85fd129 | 2009-02-21 00:04:20 -0500 | [diff] [blame] | 54 | if (!wiphy_idx_valid(wiphy_idx)) |
| 55 | return NULL; |
| 56 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 57 | assert_cfg80211_lock(); |
| 58 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 59 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 60 | if (rdev->wiphy_idx == wiphy_idx) { |
| 61 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 62 | break; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | return result; |
| 67 | } |
| 68 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 69 | int get_wiphy_idx(struct wiphy *wiphy) |
| 70 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 71 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 72 | if (!wiphy) |
| 73 | return WIPHY_IDX_STALE; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 74 | rdev = wiphy_to_dev(wiphy); |
| 75 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 76 | } |
| 77 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 78 | /* requires cfg80211_rdev_mutex to be held! */ |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 79 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
| 80 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 81 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 82 | |
| 83 | if (!wiphy_idx_valid(wiphy_idx)) |
| 84 | return NULL; |
| 85 | |
| 86 | assert_cfg80211_lock(); |
| 87 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 88 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 89 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 90 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 91 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 92 | } |
| 93 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 94 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 95 | struct cfg80211_registered_device * |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 96 | __cfg80211_rdev_from_info(struct genl_info *info) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 97 | { |
| 98 | int ifindex; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 99 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 100 | struct net_device *dev; |
| 101 | int err = -EINVAL; |
| 102 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 103 | assert_cfg80211_lock(); |
| 104 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 105 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 106 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 107 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
| 108 | err = -ENODEV; |
| 109 | } |
| 110 | |
| 111 | if (info->attrs[NL80211_ATTR_IFINDEX]) { |
| 112 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 113 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 114 | if (dev) { |
| 115 | if (dev->ieee80211_ptr) |
| 116 | byifidx = |
| 117 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 118 | dev_put(dev); |
| 119 | } |
| 120 | err = -ENODEV; |
| 121 | } |
| 122 | |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 123 | if (bywiphyidx && byifidx) { |
| 124 | if (bywiphyidx != byifidx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 125 | return ERR_PTR(-EINVAL); |
| 126 | else |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 127 | return bywiphyidx; /* == byifidx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 128 | } |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 129 | if (bywiphyidx) |
| 130 | return bywiphyidx; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 131 | |
| 132 | if (byifidx) |
| 133 | return byifidx; |
| 134 | |
| 135 | return ERR_PTR(err); |
| 136 | } |
| 137 | |
| 138 | struct cfg80211_registered_device * |
| 139 | cfg80211_get_dev_from_info(struct genl_info *info) |
| 140 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 141 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 142 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 143 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 144 | rdev = __cfg80211_rdev_from_info(info); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 145 | |
| 146 | /* if it is not an error we grab the lock on |
| 147 | * it to assure it won't be going away while |
| 148 | * we operate on it */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 149 | if (!IS_ERR(rdev)) |
| 150 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 151 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 152 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 153 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 154 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | struct cfg80211_registered_device * |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 158 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 159 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 160 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 161 | struct net_device *dev; |
| 162 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 163 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 164 | dev = dev_get_by_index(net, ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 165 | if (!dev) |
| 166 | goto out; |
| 167 | if (dev->ieee80211_ptr) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 168 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 169 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 170 | } else |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 171 | rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 172 | dev_put(dev); |
| 173 | out: |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 174 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 175 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 176 | } |
| 177 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 178 | /* requires cfg80211_mutex to be held */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 179 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 180 | char *newname) |
| 181 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 182 | struct cfg80211_registered_device *rdev2; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 183 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 184 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 185 | assert_cfg80211_lock(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 186 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 187 | /* prohibit calling the thing phy%d when %d is not its number */ |
| 188 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 189 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 190 | /* count number of places needed to print wiphy_idx */ |
| 191 | digits = 1; |
| 192 | while (wiphy_idx /= 10) |
| 193 | digits++; |
| 194 | /* |
| 195 | * deny the name if it is phy<idx> where <idx> is printed |
| 196 | * without leading zeroes. taken == strlen(newname) here |
| 197 | */ |
| 198 | if (taken == strlen(PHY_NAME) + digits) |
| 199 | return -EINVAL; |
| 200 | } |
| 201 | |
| 202 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 203 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 204 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 205 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 206 | |
| 207 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 208 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 209 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 210 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 211 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 212 | result = device_rename(&rdev->wiphy.dev, newname); |
| 213 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 214 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 215 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 216 | if (rdev->wiphy.debugfsdir && |
| 217 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 218 | rdev->wiphy.debugfsdir, |
| 219 | rdev->wiphy.debugfsdir->d_parent, |
| 220 | newname)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 221 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 222 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 223 | nl80211_notify_dev_rename(rdev); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 224 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 225 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 226 | } |
| 227 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 228 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 229 | struct net *net) |
| 230 | { |
| 231 | struct wireless_dev *wdev; |
| 232 | int err = 0; |
| 233 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 234 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 235 | return -EOPNOTSUPP; |
| 236 | |
| 237 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
| 238 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 239 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 240 | if (err) |
| 241 | break; |
| 242 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 243 | } |
| 244 | |
| 245 | if (err) { |
| 246 | /* failed -- clean up to old netns */ |
| 247 | net = wiphy_net(&rdev->wiphy); |
| 248 | |
| 249 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, |
| 250 | list) { |
| 251 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 252 | err = dev_change_net_namespace(wdev->netdev, net, |
| 253 | "wlan%d"); |
| 254 | WARN_ON(err); |
| 255 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 256 | } |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 257 | |
| 258 | return err; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | wiphy_net_set(&rdev->wiphy, net); |
| 262 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 263 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
| 264 | WARN_ON(err); |
| 265 | |
| 266 | return 0; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 267 | } |
| 268 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 269 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 270 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 271 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 272 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 273 | rdev->ops->rfkill_poll(&rdev->wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 277 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 278 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 279 | struct wireless_dev *wdev; |
| 280 | |
| 281 | if (!blocked) |
| 282 | return 0; |
| 283 | |
| 284 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 285 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 286 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 287 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 288 | dev_close(wdev->netdev); |
| 289 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 290 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 291 | rtnl_unlock(); |
| 292 | |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 297 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 298 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 299 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 300 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 301 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 302 | } |
| 303 | |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 304 | static void cfg80211_event_work(struct work_struct *work) |
| 305 | { |
| 306 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 307 | |
| 308 | rdev = container_of(work, struct cfg80211_registered_device, |
| 309 | event_work); |
| 310 | |
| 311 | rtnl_lock(); |
| 312 | cfg80211_lock_rdev(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 313 | |
Johannes Berg | 3d54d25 | 2009-08-21 14:51:05 +0200 | [diff] [blame] | 314 | cfg80211_process_rdev_events(rdev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 315 | cfg80211_unlock_rdev(rdev); |
| 316 | rtnl_unlock(); |
| 317 | } |
| 318 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 319 | /* exported functions */ |
| 320 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 321 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 322 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 323 | static int wiphy_counter; |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 324 | |
| 325 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 326 | int alloc_size; |
| 327 | |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 328 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 329 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 330 | WARN_ON(ops->connect && !ops->disconnect); |
| 331 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 332 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 333 | WARN_ON(ops->add_station && !ops->del_station); |
| 334 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame^] | 335 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 336 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 337 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 338 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 339 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 340 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 341 | return NULL; |
| 342 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 343 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 344 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 345 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 346 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 347 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 348 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 349 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 350 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 351 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 352 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 353 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 354 | return NULL; |
| 355 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 356 | |
Ben Greear | 5a254ff | 2010-09-27 09:07:26 -0700 | [diff] [blame] | 357 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 358 | |
Johannes Berg | 7623225 | 2010-10-11 14:46:52 -0400 | [diff] [blame] | 359 | /* give it a proper name */ |
| 360 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
| 361 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 362 | mutex_init(&rdev->mtx); |
| 363 | mutex_init(&rdev->devlist_mtx); |
| 364 | INIT_LIST_HEAD(&rdev->netdev_list); |
| 365 | spin_lock_init(&rdev->bss_lock); |
| 366 | INIT_LIST_HEAD(&rdev->bss_list); |
| 367 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 368 | |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 369 | #ifdef CONFIG_CFG80211_WEXT |
| 370 | rdev->wiphy.wext = &cfg80211_wext_handler; |
| 371 | #endif |
| 372 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 373 | device_initialize(&rdev->wiphy.dev); |
| 374 | rdev->wiphy.dev.class = &ieee80211_class; |
| 375 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 376 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 377 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
| 378 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 379 | #endif |
Johannes Berg | 16cb9d4 | 2009-08-12 23:33:20 +0200 | [diff] [blame] | 380 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 381 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 382 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 383 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 384 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 385 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 386 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 387 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 388 | if (!rdev->rfkill) { |
| 389 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 390 | return NULL; |
| 391 | } |
| 392 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 393 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 394 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 395 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 396 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 397 | init_waitqueue_head(&rdev->dev_wait); |
| 398 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 399 | /* |
| 400 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 401 | * Fragmentation and RTS threshold are disabled by default with the |
| 402 | * special -1 value. |
| 403 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 404 | rdev->wiphy.retry_short = 7; |
| 405 | rdev->wiphy.retry_long = 4; |
| 406 | rdev->wiphy.frag_threshold = (u32) -1; |
| 407 | rdev->wiphy.rts_threshold = (u32) -1; |
Lukáš Turek | 81077e8 | 2009-12-21 22:50:47 +0100 | [diff] [blame] | 408 | rdev->wiphy.coverage_class = 0; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 409 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 410 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 411 | } |
| 412 | EXPORT_SYMBOL(wiphy_new); |
| 413 | |
| 414 | int wiphy_register(struct wiphy *wiphy) |
| 415 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 416 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 417 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 418 | enum ieee80211_band band; |
| 419 | struct ieee80211_supported_band *sband; |
| 420 | bool have_band = false; |
| 421 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 422 | u16 ifmodes = wiphy->interface_modes; |
| 423 | |
Johannes Berg | ef15aac | 2010-01-20 12:02:33 +0100 | [diff] [blame] | 424 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
| 425 | return -EINVAL; |
| 426 | |
| 427 | if (WARN_ON(wiphy->addresses && |
| 428 | !is_zero_ether_addr(wiphy->perm_addr) && |
| 429 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, |
| 430 | ETH_ALEN))) |
| 431 | return -EINVAL; |
| 432 | |
| 433 | if (wiphy->addresses) |
| 434 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); |
| 435 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 436 | /* sanity check ifmodes */ |
| 437 | WARN_ON(!ifmodes); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 438 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 439 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 440 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 441 | |
| 442 | /* sanity check supported bands/channels */ |
| 443 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 444 | sband = wiphy->bands[band]; |
| 445 | if (!sband) |
| 446 | continue; |
| 447 | |
| 448 | sband->band = band; |
| 449 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 450 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 451 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 452 | |
| 453 | /* |
| 454 | * Since we use a u32 for rate bitmaps in |
| 455 | * ieee80211_get_response_rate, we cannot |
| 456 | * have more than 32 legacy rates. |
| 457 | */ |
| 458 | if (WARN_ON(sband->n_bitrates > 32)) |
| 459 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 460 | |
| 461 | for (i = 0; i < sband->n_channels; i++) { |
| 462 | sband->channels[i].orig_flags = |
| 463 | sband->channels[i].flags; |
| 464 | sband->channels[i].orig_mag = |
| 465 | sband->channels[i].max_antenna_gain; |
| 466 | sband->channels[i].orig_mpwr = |
| 467 | sband->channels[i].max_power; |
| 468 | sband->channels[i].band = band; |
| 469 | } |
| 470 | |
| 471 | have_band = true; |
| 472 | } |
| 473 | |
| 474 | if (!have_band) { |
| 475 | WARN_ON(1); |
| 476 | return -EINVAL; |
| 477 | } |
| 478 | |
| 479 | /* check and set up bitrates */ |
| 480 | ieee80211_set_bitrate_flags(wiphy); |
| 481 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 482 | mutex_lock(&cfg80211_mutex); |
| 483 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 484 | res = device_add(&rdev->wiphy.dev); |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 485 | if (res) { |
| 486 | mutex_unlock(&cfg80211_mutex); |
| 487 | return res; |
| 488 | } |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 489 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 490 | /* set up regulatory info */ |
| 491 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); |
| 492 | |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 493 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 494 | cfg80211_rdev_list_generation++; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 495 | |
| 496 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 497 | rdev->wiphy.debugfsdir = |
| 498 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 499 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 500 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 501 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 502 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 503 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 504 | struct regulatory_request request; |
| 505 | |
| 506 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 507 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 508 | request.alpha2[0] = '9'; |
| 509 | request.alpha2[1] = '9'; |
| 510 | |
| 511 | nl80211_send_reg_change_event(&request); |
| 512 | } |
| 513 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 514 | cfg80211_debugfs_rdev_add(rdev); |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 515 | mutex_unlock(&cfg80211_mutex); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 516 | |
John W. Linville | c3d34d5 | 2010-08-30 17:36:40 -0400 | [diff] [blame] | 517 | /* |
| 518 | * due to a locking dependency this has to be outside of the |
| 519 | * cfg80211_mutex lock |
| 520 | */ |
| 521 | res = rfkill_register(rdev->rfkill); |
| 522 | if (res) |
| 523 | goto out_rm_dev; |
| 524 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 525 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 526 | |
Maxime Bizon | 5a65205 | 2010-07-21 17:21:38 +0200 | [diff] [blame] | 527 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 528 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 529 | return res; |
| 530 | } |
| 531 | EXPORT_SYMBOL(wiphy_register); |
| 532 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 533 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 534 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 535 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 536 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 537 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 538 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 539 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 540 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 541 | } |
| 542 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 543 | |
| 544 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 545 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 546 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 547 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 548 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 549 | } |
| 550 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 551 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 552 | void wiphy_unregister(struct wiphy *wiphy) |
| 553 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 554 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 555 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 556 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 557 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 558 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 559 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 560 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 561 | wait_event(rdev->dev_wait, ({ |
| 562 | int __count; |
| 563 | mutex_lock(&rdev->devlist_mtx); |
| 564 | __count = rdev->opencount; |
| 565 | mutex_unlock(&rdev->devlist_mtx); |
| 566 | __count == 0;})); |
| 567 | |
| 568 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 569 | BUG_ON(!list_empty(&rdev->netdev_list)); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 570 | mutex_unlock(&rdev->devlist_mtx); |
| 571 | |
| 572 | /* |
| 573 | * First remove the hardware from everywhere, this makes |
| 574 | * it impossible to find from userspace. |
| 575 | */ |
Johannes Berg | 7bcfaf2 | 2009-10-27 12:59:03 +0100 | [diff] [blame] | 576 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 577 | list_del_rcu(&rdev->list); |
| 578 | synchronize_rcu(); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 579 | |
| 580 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 581 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 582 | * hopefully the driver will refuse it since it's tearing |
| 583 | * down the device already. We wait for this command to complete |
| 584 | * before unlinking the item from the list. |
| 585 | * 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] | 586 | * a virtual interface is still present. Hence, we can only get |
| 587 | * to lock contention here if userspace issues a command that |
| 588 | * identified the hardware by wiphy index. |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 589 | */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 590 | cfg80211_lock_rdev(rdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 591 | /* nothing */ |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 592 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 593 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 594 | /* If this device got a regulatory hint tell core its |
| 595 | * free to listen now to a new shiny device regulatory hint */ |
| 596 | reg_device_remove(wiphy); |
| 597 | |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 598 | cfg80211_rdev_list_generation++; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 599 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 600 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 601 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 602 | |
Johannes Berg | 36e6fea | 2009-08-12 22:21:21 +0200 | [diff] [blame] | 603 | flush_work(&rdev->scan_done_wk); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 604 | cancel_work_sync(&rdev->conn_work); |
Johannes Berg | 6682588 | 2009-07-13 13:24:44 +0200 | [diff] [blame] | 605 | flush_work(&rdev->event_work); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 606 | } |
| 607 | EXPORT_SYMBOL(wiphy_unregister); |
| 608 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 609 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 610 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 611 | struct cfg80211_internal_bss *scan, *tmp; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 612 | rfkill_destroy(rdev->rfkill); |
| 613 | mutex_destroy(&rdev->mtx); |
| 614 | mutex_destroy(&rdev->devlist_mtx); |
| 615 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 78c1c7e | 2009-02-10 21:25:57 +0100 | [diff] [blame] | 616 | cfg80211_put_bss(&scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 617 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 618 | } |
| 619 | |
| 620 | void wiphy_free(struct wiphy *wiphy) |
| 621 | { |
| 622 | put_device(&wiphy->dev); |
| 623 | } |
| 624 | EXPORT_SYMBOL(wiphy_free); |
| 625 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 626 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 627 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 628 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 629 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 630 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 631 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 632 | } |
| 633 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 634 | |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 635 | static void wdev_cleanup_work(struct work_struct *work) |
| 636 | { |
| 637 | struct wireless_dev *wdev; |
| 638 | struct cfg80211_registered_device *rdev; |
| 639 | |
| 640 | wdev = container_of(work, struct wireless_dev, cleanup_work); |
| 641 | rdev = wiphy_to_dev(wdev->wiphy); |
| 642 | |
| 643 | cfg80211_lock_rdev(rdev); |
| 644 | |
| 645 | if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { |
| 646 | rdev->scan_req->aborted = true; |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 647 | ___cfg80211_scan_done(rdev, true); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | cfg80211_unlock_rdev(rdev); |
| 651 | |
| 652 | mutex_lock(&rdev->devlist_mtx); |
| 653 | rdev->opencount--; |
| 654 | mutex_unlock(&rdev->devlist_mtx); |
| 655 | wake_up(&rdev->dev_wait); |
| 656 | |
| 657 | dev_put(wdev->netdev); |
| 658 | } |
| 659 | |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 660 | static struct device_type wiphy_type = { |
| 661 | .name = "wlan", |
| 662 | }; |
| 663 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 664 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
| 665 | unsigned long state, |
| 666 | void *ndev) |
| 667 | { |
| 668 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 669 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 670 | struct cfg80211_registered_device *rdev; |
| 671 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 672 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 673 | return NOTIFY_DONE; |
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 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 676 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 677 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 678 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 679 | switch (state) { |
Marcel Holtmann | 053a93d | 2009-10-02 05:15:28 +0000 | [diff] [blame] | 680 | case NETDEV_POST_INIT: |
| 681 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); |
| 682 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 683 | case NETDEV_REGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 684 | /* |
| 685 | * NB: cannot take rdev->mtx here because this may be |
| 686 | * called within code protected by it when interfaces |
| 687 | * are added with nl80211. |
| 688 | */ |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 689 | mutex_init(&wdev->mtx); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 690 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 691 | INIT_LIST_HEAD(&wdev->event_list); |
| 692 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 693 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
| 694 | spin_lock_init(&wdev->mgmt_registrations_lock); |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 695 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 696 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 697 | list_add_rcu(&wdev->list, &rdev->netdev_list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 698 | rdev->devlist_generation++; |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 699 | /* can only change netns with wiphy */ |
| 700 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 701 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 702 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 703 | "phy80211")) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 704 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 705 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 706 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 707 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 708 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 709 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 710 | wdev->wext.default_key = -1; |
| 711 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 712 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 713 | #endif |
| 714 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 715 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 716 | wdev->ps = true; |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 717 | else |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 718 | wdev->ps = false; |
Juuso Oikarinen | 9043f3b | 2010-04-27 12:47:41 +0300 | [diff] [blame] | 719 | /* allow mac80211 to determine the timeout */ |
| 720 | wdev->ps_timeout = -1; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 721 | if (rdev->ops->set_power_mgmt) |
| 722 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 723 | wdev->ps, |
| 724 | wdev->ps_timeout)) { |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 725 | /* assume this means it's off */ |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 726 | wdev->ps = false; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 727 | } |
Kalle Valo | ffb9eb3 | 2010-02-17 17:58:10 +0200 | [diff] [blame] | 728 | |
John W. Linville | 4890e3b | 2009-09-30 14:50:17 -0400 | [diff] [blame] | 729 | if (!dev->ethtool_ops) |
| 730 | dev->ethtool_ops = &cfg80211_ethtool_ops; |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 731 | |
| 732 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 733 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
Johannes Berg | ad4bb6f | 2009-11-19 00:56:30 +0100 | [diff] [blame] | 734 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
| 735 | dev->priv_flags |= IFF_DONT_BRIDGE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 736 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 737 | case NETDEV_GOING_DOWN: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 738 | switch (wdev->iftype) { |
| 739 | case NL80211_IFTYPE_ADHOC: |
| 740 | cfg80211_leave_ibss(rdev, dev, true); |
| 741 | break; |
Johannes Berg | 074ac8d | 2010-09-16 14:58:22 +0200 | [diff] [blame] | 742 | case NL80211_IFTYPE_P2P_CLIENT: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 743 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 744 | wdev_lock(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 745 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 746 | kfree(wdev->wext.ie); |
| 747 | wdev->wext.ie = NULL; |
| 748 | wdev->wext.ie_len = 0; |
Johannes Berg | 0eb1464 | 2009-07-02 15:49:03 +0200 | [diff] [blame] | 749 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 750 | #endif |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 751 | __cfg80211_disconnect(rdev, dev, |
| 752 | WLAN_REASON_DEAUTH_LEAVING, true); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame] | 753 | cfg80211_mlme_down(rdev, dev); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 754 | wdev_unlock(wdev); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 755 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame^] | 756 | case NL80211_IFTYPE_MESH_POINT: |
| 757 | cfg80211_leave_mesh(rdev, dev); |
| 758 | break; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 759 | default: |
| 760 | break; |
| 761 | } |
Johannes Berg | 01a0ac4 | 2009-08-20 21:36:16 +0200 | [diff] [blame] | 762 | break; |
| 763 | case NETDEV_DOWN: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 764 | dev_hold(dev); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 765 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 766 | break; |
| 767 | case NETDEV_UP: |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 768 | /* |
| 769 | * If we have a really quick DOWN/UP succession we may |
| 770 | * have this work still pending ... cancel it and see |
| 771 | * if it was pending, in which case we need to account |
| 772 | * for some of the work it would have done. |
| 773 | */ |
| 774 | if (cancel_work_sync(&wdev->cleanup_work)) { |
| 775 | mutex_lock(&rdev->devlist_mtx); |
| 776 | rdev->opencount--; |
| 777 | mutex_unlock(&rdev->devlist_mtx); |
| 778 | dev_put(dev); |
| 779 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 780 | cfg80211_lock_rdev(rdev); |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 781 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 782 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 783 | switch (wdev->iftype) { |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame^] | 784 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 785 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 786 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 787 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 788 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 789 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 790 | break; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame^] | 791 | #endif |
| 792 | case NL80211_IFTYPE_MESH_POINT: |
| 793 | /* backward compat code ... */ |
| 794 | if (wdev->mesh_id_up_len) |
| 795 | __cfg80211_join_mesh(rdev, dev, wdev->ssid, |
| 796 | wdev->mesh_id_up_len, |
| 797 | &default_mesh_config); |
| 798 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 799 | default: |
| 800 | break; |
| 801 | } |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 802 | wdev_unlock(wdev); |
Johannes Berg | ad00239 | 2009-08-18 19:51:57 +0200 | [diff] [blame] | 803 | rdev->opencount++; |
Johannes Berg | aee83ea | 2009-08-09 11:51:29 +0200 | [diff] [blame] | 804 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503d | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 805 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 806 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 807 | case NETDEV_UNREGISTER: |
Johannes Berg | 0ff6ce7 | 2009-08-17 12:25:37 +0200 | [diff] [blame] | 808 | /* |
| 809 | * NB: cannot take rdev->mtx here because this may be |
| 810 | * called within code protected by it when interfaces |
| 811 | * are removed with nl80211. |
| 812 | */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 813 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 814 | /* |
| 815 | * It is possible to get NETDEV_UNREGISTER |
| 816 | * multiple times. To detect that, check |
| 817 | * that the interface is still on the list |
| 818 | * of registered interfaces, and only then |
| 819 | * remove and clean it up. |
| 820 | */ |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 821 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 822 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 823 | list_del_rcu(&wdev->list); |
Johannes Berg | f5ea912 | 2009-08-07 16:17:38 +0200 | [diff] [blame] | 824 | rdev->devlist_generation++; |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 825 | cfg80211_mlme_purge_registrations(wdev); |
Johannes Berg | 3d23e34 | 2009-09-29 23:27:28 +0200 | [diff] [blame] | 826 | #ifdef CONFIG_CFG80211_WEXT |
Johannes Berg | e40cbda | 2009-07-30 14:04:01 +0200 | [diff] [blame] | 827 | kfree(wdev->wext.keys); |
| 828 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 829 | } |
| 830 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 5f2aa25 | 2010-01-17 15:49:02 +0100 | [diff] [blame] | 831 | /* |
| 832 | * synchronise (so that we won't find this netdev |
| 833 | * from other code any more) and then clear the list |
| 834 | * head so that the above code can safely check for |
| 835 | * !list_empty() to avoid double-cleanup. |
| 836 | */ |
| 837 | synchronize_rcu(); |
| 838 | INIT_LIST_HEAD(&wdev->list); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 839 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 840 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633 | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 841 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 842 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 843 | if (rfkill_blocked(rdev->rfkill)) |
| 844 | return notifier_from_errno(-ERFKILL); |
| 845 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 846 | } |
| 847 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 848 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 849 | } |
| 850 | |
| 851 | static struct notifier_block cfg80211_netdev_notifier = { |
| 852 | .notifier_call = cfg80211_netdev_notifier_call, |
| 853 | }; |
| 854 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 855 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 856 | { |
| 857 | struct cfg80211_registered_device *rdev; |
| 858 | |
| 859 | rtnl_lock(); |
| 860 | mutex_lock(&cfg80211_mutex); |
| 861 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 862 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 863 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 864 | } |
| 865 | mutex_unlock(&cfg80211_mutex); |
| 866 | rtnl_unlock(); |
| 867 | } |
| 868 | |
| 869 | static struct pernet_operations cfg80211_pernet_ops = { |
| 870 | .exit = cfg80211_pernet_exit, |
| 871 | }; |
| 872 | |
| 873 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 874 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 875 | int err; |
| 876 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 877 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 878 | if (err) |
| 879 | goto out_fail_pernet; |
| 880 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 881 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 882 | if (err) |
| 883 | goto out_fail_sysfs; |
| 884 | |
| 885 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 886 | if (err) |
| 887 | goto out_fail_notifier; |
| 888 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 889 | err = nl80211_init(); |
| 890 | if (err) |
| 891 | goto out_fail_nl80211; |
| 892 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 893 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 894 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 895 | err = regulatory_init(); |
| 896 | if (err) |
| 897 | goto out_fail_reg; |
| 898 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 899 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
| 900 | if (!cfg80211_wq) |
| 901 | goto out_fail_wq; |
| 902 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 903 | return 0; |
| 904 | |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 905 | out_fail_wq: |
| 906 | regulatory_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 907 | out_fail_reg: |
| 908 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 909 | out_fail_nl80211: |
| 910 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 911 | out_fail_notifier: |
| 912 | wiphy_sysfs_exit(); |
| 913 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 914 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 915 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 916 | return err; |
| 917 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 918 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 919 | |
Uwe Kleine-König | f884e38 | 2010-06-18 09:38:54 +0200 | [diff] [blame] | 920 | static void __exit cfg80211_exit(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 921 | { |
| 922 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 923 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 924 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 925 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 926 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 927 | unregister_pernet_device(&cfg80211_pernet_ops); |
Alban Browaeys | e60d744 | 2009-11-25 15:13:00 +0100 | [diff] [blame] | 928 | destroy_workqueue(cfg80211_wq); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 929 | } |
| 930 | module_exit(cfg80211_exit); |