Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This is the linux wireless configuration interface. |
| 3 | * |
Johannes Berg | 0864512 | 2009-05-11 13:54:58 +0200 | [diff] [blame] | 4 | * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <linux/if.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/err.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 10 | #include <linux/list.h> |
| 11 | #include <linux/nl80211.h> |
| 12 | #include <linux/debugfs.h> |
| 13 | #include <linux/notifier.h> |
| 14 | #include <linux/device.h> |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 15 | #include <linux/rtnetlink.h> |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 16 | #include <net/genetlink.h> |
| 17 | #include <net/cfg80211.h> |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 18 | #include "nl80211.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 19 | #include "core.h" |
| 20 | #include "sysfs.h" |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 21 | #include "debugfs.h" |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 22 | #include "wext-compat.h" |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 23 | |
| 24 | /* name for sysfs, %d is appended */ |
| 25 | #define PHY_NAME "phy" |
| 26 | |
| 27 | MODULE_AUTHOR("Johannes Berg"); |
| 28 | MODULE_LICENSE("GPL"); |
| 29 | MODULE_DESCRIPTION("wireless configuration support"); |
| 30 | |
| 31 | /* RCU might be appropriate here since we usually |
| 32 | * only read the list, and that can happen quite |
| 33 | * often because we need to do it for each command */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 34 | LIST_HEAD(cfg80211_rdev_list); |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 35 | |
| 36 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 37 | * This is used to protect the cfg80211_rdev_list, cfg80211_regdomain, |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 38 | * country_ie_regdomain, the reg_beacon_list and the the last regulatory |
| 39 | * request receipt (last_request). |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 40 | */ |
| 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 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 46 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 47 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 48 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 49 | struct cfg80211_registered_device *result = NULL, *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 50 | |
Luis R. Rodriguez | 85fd129 | 2009-02-21 00:04:20 -0500 | [diff] [blame] | 51 | if (!wiphy_idx_valid(wiphy_idx)) |
| 52 | return NULL; |
| 53 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 54 | assert_cfg80211_lock(); |
| 55 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 56 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 57 | if (rdev->wiphy_idx == wiphy_idx) { |
| 58 | result = rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 59 | break; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | return result; |
| 64 | } |
| 65 | |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 66 | int get_wiphy_idx(struct wiphy *wiphy) |
| 67 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 68 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 69 | if (!wiphy) |
| 70 | return WIPHY_IDX_STALE; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 71 | rdev = wiphy_to_dev(wiphy); |
| 72 | return rdev->wiphy_idx; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 73 | } |
| 74 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 75 | /* requires cfg80211_rdev_mutex to be held! */ |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 76 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
| 77 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 78 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 79 | |
| 80 | if (!wiphy_idx_valid(wiphy_idx)) |
| 81 | return NULL; |
| 82 | |
| 83 | assert_cfg80211_lock(); |
| 84 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 85 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
| 86 | if (!rdev) |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 87 | return NULL; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 88 | return &rdev->wiphy; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 89 | } |
| 90 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 91 | /* requires cfg80211_mutex to be held! */ |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 92 | struct cfg80211_registered_device * |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 93 | __cfg80211_rdev_from_info(struct genl_info *info) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 94 | { |
| 95 | int ifindex; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 96 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 97 | struct net_device *dev; |
| 98 | int err = -EINVAL; |
| 99 | |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 100 | assert_cfg80211_lock(); |
| 101 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 102 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 103 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 104 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
| 105 | err = -ENODEV; |
| 106 | } |
| 107 | |
| 108 | if (info->attrs[NL80211_ATTR_IFINDEX]) { |
| 109 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 110 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 111 | if (dev) { |
| 112 | if (dev->ieee80211_ptr) |
| 113 | byifidx = |
| 114 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 115 | dev_put(dev); |
| 116 | } |
| 117 | err = -ENODEV; |
| 118 | } |
| 119 | |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 120 | if (bywiphyidx && byifidx) { |
| 121 | if (bywiphyidx != byifidx) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 122 | return ERR_PTR(-EINVAL); |
| 123 | else |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 124 | return bywiphyidx; /* == byifidx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 125 | } |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 126 | if (bywiphyidx) |
| 127 | return bywiphyidx; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 128 | |
| 129 | if (byifidx) |
| 130 | return byifidx; |
| 131 | |
| 132 | return ERR_PTR(err); |
| 133 | } |
| 134 | |
| 135 | struct cfg80211_registered_device * |
| 136 | cfg80211_get_dev_from_info(struct genl_info *info) |
| 137 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 138 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 139 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 140 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 141 | rdev = __cfg80211_rdev_from_info(info); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 142 | |
| 143 | /* if it is not an error we grab the lock on |
| 144 | * it to assure it won't be going away while |
| 145 | * we operate on it */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 146 | if (!IS_ERR(rdev)) |
| 147 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 148 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 149 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 150 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 151 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | struct cfg80211_registered_device * |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 155 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 156 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 157 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 158 | struct net_device *dev; |
| 159 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 160 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 161 | dev = dev_get_by_index(net, ifindex); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 162 | if (!dev) |
| 163 | goto out; |
| 164 | if (dev->ieee80211_ptr) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 165 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
| 166 | mutex_lock(&rdev->mtx); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 167 | } else |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 168 | rdev = ERR_PTR(-ENODEV); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 169 | dev_put(dev); |
| 170 | out: |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 171 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 172 | return rdev; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 173 | } |
| 174 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 175 | /* requires cfg80211_mutex to be held */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 176 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
| 177 | char *newname) |
| 178 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 179 | struct cfg80211_registered_device *rdev2; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 180 | int wiphy_idx, taken = -1, result, digits; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 181 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 182 | assert_cfg80211_lock(); |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 183 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 184 | /* prohibit calling the thing phy%d when %d is not its number */ |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 185 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
| 186 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { |
| 187 | /* count number of places needed to print wiphy_idx */ |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 188 | digits = 1; |
Luis R. Rodriguez | b5850a7 | 2009-02-21 00:04:19 -0500 | [diff] [blame] | 189 | while (wiphy_idx /= 10) |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 190 | digits++; |
| 191 | /* |
| 192 | * deny the name if it is phy<idx> where <idx> is printed |
| 193 | * without leading zeroes. taken == strlen(newname) here |
| 194 | */ |
| 195 | if (taken == strlen(PHY_NAME) + digits) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 196 | return -EINVAL; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 197 | } |
| 198 | |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 199 | |
| 200 | /* Ignore nop renames */ |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 201 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 202 | return 0; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 203 | |
| 204 | /* Ensure another device does not already have this name. */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 205 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
| 206 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 207 | return -EINVAL; |
Eric W. Biederman | 2940bb6 | 2008-05-08 14:30:18 -0700 | [diff] [blame] | 208 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 209 | result = device_rename(&rdev->wiphy.dev, newname); |
| 210 | if (result) |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 211 | return result; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 212 | |
Johannes Berg | 33c0360 | 2008-10-08 10:23:48 +0200 | [diff] [blame] | 213 | if (rdev->wiphy.debugfsdir && |
| 214 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 215 | rdev->wiphy.debugfsdir, |
| 216 | rdev->wiphy.debugfsdir->d_parent, |
| 217 | newname)) |
| 218 | printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", |
| 219 | newname); |
| 220 | |
Johannes Berg | 4bbf4d5 | 2009-03-24 09:35:46 +0100 | [diff] [blame] | 221 | nl80211_notify_dev_rename(rdev); |
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 | return 0; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 224 | } |
| 225 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 226 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
| 227 | struct net *net) |
| 228 | { |
| 229 | struct wireless_dev *wdev; |
| 230 | int err = 0; |
| 231 | |
| 232 | if (!rdev->wiphy.netnsok) |
| 233 | return -EOPNOTSUPP; |
| 234 | |
| 235 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
| 236 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 237 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); |
| 238 | if (err) |
| 239 | break; |
| 240 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 241 | } |
| 242 | |
| 243 | if (err) { |
| 244 | /* failed -- clean up to old netns */ |
| 245 | net = wiphy_net(&rdev->wiphy); |
| 246 | |
| 247 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, |
| 248 | list) { |
| 249 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
| 250 | err = dev_change_net_namespace(wdev->netdev, net, |
| 251 | "wlan%d"); |
| 252 | WARN_ON(err); |
| 253 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | wiphy_net_set(&rdev->wiphy, net); |
| 258 | |
| 259 | return err; |
| 260 | } |
| 261 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 262 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
| 263 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 264 | struct cfg80211_registered_device *rdev = data; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 265 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 266 | rdev->ops->rfkill_poll(&rdev->wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
| 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 | struct wireless_dev *wdev; |
| 273 | |
| 274 | if (!blocked) |
| 275 | return 0; |
| 276 | |
| 277 | rtnl_lock(); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 278 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 279 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 280 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 281 | dev_close(wdev->netdev); |
| 282 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 283 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 284 | rtnl_unlock(); |
| 285 | |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static void cfg80211_rfkill_sync_work(struct work_struct *work) |
| 290 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 291 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 292 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 293 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
| 294 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 295 | } |
| 296 | |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 297 | static void cfg80211_process_events(struct wireless_dev *wdev) |
| 298 | { |
| 299 | struct cfg80211_event *ev; |
| 300 | unsigned long flags; |
| 301 | |
| 302 | spin_lock_irqsave(&wdev->event_lock, flags); |
| 303 | while (!list_empty(&wdev->event_list)) { |
| 304 | ev = list_first_entry(&wdev->event_list, |
| 305 | struct cfg80211_event, list); |
| 306 | list_del(&ev->list); |
| 307 | spin_unlock_irqrestore(&wdev->event_lock, flags); |
| 308 | |
| 309 | wdev_lock(wdev); |
| 310 | switch (ev->type) { |
| 311 | case EVENT_CONNECT_RESULT: |
| 312 | __cfg80211_connect_result( |
| 313 | wdev->netdev, ev->cr.bssid, |
| 314 | ev->cr.req_ie, ev->cr.req_ie_len, |
| 315 | ev->cr.resp_ie, ev->cr.resp_ie_len, |
| 316 | ev->cr.status, |
Johannes Berg | df7fc0f | 2009-07-29 11:23:49 +0200 | [diff] [blame^] | 317 | ev->cr.status == WLAN_STATUS_SUCCESS, |
| 318 | NULL); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 319 | break; |
| 320 | case EVENT_ROAMED: |
| 321 | __cfg80211_roamed(wdev, ev->rm.bssid, |
| 322 | ev->rm.req_ie, ev->rm.req_ie_len, |
| 323 | ev->rm.resp_ie, ev->rm.resp_ie_len); |
| 324 | break; |
| 325 | case EVENT_DISCONNECTED: |
| 326 | __cfg80211_disconnected(wdev->netdev, |
| 327 | ev->dc.ie, ev->dc.ie_len, |
| 328 | ev->dc.reason, true); |
| 329 | break; |
| 330 | case EVENT_IBSS_JOINED: |
| 331 | __cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid); |
| 332 | break; |
| 333 | } |
| 334 | wdev_unlock(wdev); |
| 335 | |
| 336 | kfree(ev); |
| 337 | |
| 338 | spin_lock_irqsave(&wdev->event_lock, flags); |
| 339 | } |
| 340 | spin_unlock_irqrestore(&wdev->event_lock, flags); |
| 341 | } |
| 342 | |
| 343 | static void cfg80211_event_work(struct work_struct *work) |
| 344 | { |
| 345 | struct cfg80211_registered_device *rdev; |
| 346 | struct wireless_dev *wdev; |
| 347 | |
| 348 | rdev = container_of(work, struct cfg80211_registered_device, |
| 349 | event_work); |
| 350 | |
| 351 | rtnl_lock(); |
| 352 | cfg80211_lock_rdev(rdev); |
| 353 | mutex_lock(&rdev->devlist_mtx); |
| 354 | |
| 355 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
| 356 | cfg80211_process_events(wdev); |
| 357 | |
| 358 | mutex_unlock(&rdev->devlist_mtx); |
| 359 | cfg80211_unlock_rdev(rdev); |
| 360 | rtnl_unlock(); |
| 361 | } |
| 362 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 363 | /* exported functions */ |
| 364 | |
David Kilroy | 3dcf670 | 2009-05-16 23:13:46 +0100 | [diff] [blame] | 365 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 366 | { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 367 | static int wiphy_counter; |
| 368 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 369 | struct cfg80211_registered_device *rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 370 | int alloc_size; |
| 371 | |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 372 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
| 373 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); |
| 374 | WARN_ON(ops->connect && !ops->disconnect); |
| 375 | WARN_ON(ops->join_ibss && !ops->leave_ibss); |
| 376 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); |
| 377 | WARN_ON(ops->add_station && !ops->del_station); |
| 378 | WARN_ON(ops->add_mpath && !ops->del_mpath); |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 379 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 380 | alloc_size = sizeof(*rdev) + sizeof_priv; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 381 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 382 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
| 383 | if (!rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 384 | return NULL; |
| 385 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 386 | rdev->ops = ops; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 387 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 388 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 389 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 390 | rdev->wiphy_idx = wiphy_counter++; |
Johannes Berg | a4d73ee | 2007-04-26 20:50:35 -0700 | [diff] [blame] | 391 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 392 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 393 | wiphy_counter--; |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 394 | mutex_unlock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 395 | /* ugh, wrapped! */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 396 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 397 | return NULL; |
| 398 | } |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 399 | |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 400 | mutex_unlock(&cfg80211_mutex); |
Denis ChengRq | 638af07 | 2008-09-23 02:35:37 +0800 | [diff] [blame] | 401 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 402 | /* give it a proper name */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 403 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 404 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 405 | mutex_init(&rdev->mtx); |
| 406 | mutex_init(&rdev->devlist_mtx); |
| 407 | INIT_LIST_HEAD(&rdev->netdev_list); |
| 408 | spin_lock_init(&rdev->bss_lock); |
| 409 | INIT_LIST_HEAD(&rdev->bss_list); |
| 410 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 411 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 412 | device_initialize(&rdev->wiphy.dev); |
| 413 | rdev->wiphy.dev.class = &ieee80211_class; |
| 414 | rdev->wiphy.dev.platform_data = rdev; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 415 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 416 | wiphy_net_set(&rdev->wiphy, &init_net); |
| 417 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 418 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
| 419 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
| 420 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, |
| 421 | &rdev->rfkill_ops, rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 422 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 423 | if (!rdev->rfkill) { |
| 424 | kfree(rdev); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 425 | return NULL; |
| 426 | } |
| 427 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 428 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
| 429 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
| 430 | INIT_WORK(&rdev->event_work, cfg80211_event_work); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 431 | |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 432 | /* |
| 433 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. |
| 434 | * Fragmentation and RTS threshold are disabled by default with the |
| 435 | * special -1 value. |
| 436 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 437 | rdev->wiphy.retry_short = 7; |
| 438 | rdev->wiphy.retry_long = 4; |
| 439 | rdev->wiphy.frag_threshold = (u32) -1; |
| 440 | rdev->wiphy.rts_threshold = (u32) -1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 441 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 442 | return &rdev->wiphy; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 443 | } |
| 444 | EXPORT_SYMBOL(wiphy_new); |
| 445 | |
| 446 | int wiphy_register(struct wiphy *wiphy) |
| 447 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 448 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 449 | int res; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 450 | enum ieee80211_band band; |
| 451 | struct ieee80211_supported_band *sband; |
| 452 | bool have_band = false; |
| 453 | int i; |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 454 | u16 ifmodes = wiphy->interface_modes; |
| 455 | |
| 456 | /* sanity check ifmodes */ |
| 457 | WARN_ON(!ifmodes); |
| 458 | ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; |
| 459 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
| 460 | wiphy->interface_modes = ifmodes; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 461 | |
| 462 | /* sanity check supported bands/channels */ |
| 463 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 464 | sband = wiphy->bands[band]; |
| 465 | if (!sband) |
| 466 | continue; |
| 467 | |
| 468 | sband->band = band; |
| 469 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 470 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 471 | return -EINVAL; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 472 | |
| 473 | /* |
| 474 | * Since we use a u32 for rate bitmaps in |
| 475 | * ieee80211_get_response_rate, we cannot |
| 476 | * have more than 32 legacy rates. |
| 477 | */ |
| 478 | if (WARN_ON(sband->n_bitrates > 32)) |
| 479 | return -EINVAL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 480 | |
| 481 | for (i = 0; i < sband->n_channels; i++) { |
| 482 | sband->channels[i].orig_flags = |
| 483 | sband->channels[i].flags; |
| 484 | sband->channels[i].orig_mag = |
| 485 | sband->channels[i].max_antenna_gain; |
| 486 | sband->channels[i].orig_mpwr = |
| 487 | sband->channels[i].max_power; |
| 488 | sband->channels[i].band = band; |
| 489 | } |
| 490 | |
| 491 | have_band = true; |
| 492 | } |
| 493 | |
| 494 | if (!have_band) { |
| 495 | WARN_ON(1); |
| 496 | return -EINVAL; |
| 497 | } |
| 498 | |
| 499 | /* check and set up bitrates */ |
| 500 | ieee80211_set_bitrate_flags(wiphy); |
| 501 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 502 | res = device_add(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 503 | if (res) |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 504 | return res; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 505 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 506 | res = rfkill_register(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 507 | if (res) |
| 508 | goto out_rm_dev; |
| 509 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 510 | mutex_lock(&cfg80211_mutex); |
| 511 | |
| 512 | /* set up regulatory info */ |
| 513 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); |
| 514 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 515 | list_add(&rdev->list, &cfg80211_rdev_list); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 516 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 517 | mutex_unlock(&cfg80211_mutex); |
| 518 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 519 | /* add to debugfs */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 520 | rdev->wiphy.debugfsdir = |
| 521 | debugfs_create_dir(wiphy_name(&rdev->wiphy), |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 522 | ieee80211_debugfs_dir); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 523 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
| 524 | rdev->wiphy.debugfsdir = NULL; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 525 | |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 526 | if (wiphy->custom_regulatory) { |
| 527 | struct regulatory_request request; |
| 528 | |
| 529 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 530 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 531 | request.alpha2[0] = '9'; |
| 532 | request.alpha2[1] = '9'; |
| 533 | |
| 534 | nl80211_send_reg_change_event(&request); |
| 535 | } |
| 536 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 537 | cfg80211_debugfs_rdev_add(rdev); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 538 | |
Johannes Berg | 2f0accc | 2009-06-10 16:50:29 +0200 | [diff] [blame] | 539 | return 0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 540 | |
| 541 | out_rm_dev: |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 542 | device_del(&rdev->wiphy.dev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 543 | return res; |
| 544 | } |
| 545 | EXPORT_SYMBOL(wiphy_register); |
| 546 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 547 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
| 548 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 549 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 550 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 551 | if (!rdev->ops->rfkill_poll) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 552 | return; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 553 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
| 554 | rfkill_resume_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 555 | } |
| 556 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); |
| 557 | |
| 558 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) |
| 559 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 560 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 561 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 562 | rfkill_pause_polling(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 563 | } |
| 564 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); |
| 565 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 566 | void wiphy_unregister(struct wiphy *wiphy) |
| 567 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 568 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 569 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 570 | rfkill_unregister(rdev->rfkill); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 571 | |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 572 | /* protect the device list */ |
Luis R. Rodriguez | a179439 | 2009-02-21 00:04:21 -0500 | [diff] [blame] | 573 | mutex_lock(&cfg80211_mutex); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 574 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 575 | BUG_ON(!list_empty(&rdev->netdev_list)); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 576 | |
| 577 | /* |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 578 | * Try to grab rdev->mtx. If a command is still in progress, |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 579 | * hopefully the driver will refuse it since it's tearing |
| 580 | * down the device already. We wait for this command to complete |
| 581 | * before unlinking the item from the list. |
| 582 | * Note: as codified by the BUG_ON above we cannot get here if |
| 583 | * a virtual interface is still associated. Hence, we can only |
| 584 | * get to lock contention here if userspace issues a command |
| 585 | * that identified the hardware by wiphy index. |
| 586 | */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 587 | mutex_lock(&rdev->mtx); |
Johannes Berg | f16bfc1 | 2007-04-26 20:51:12 -0700 | [diff] [blame] | 588 | /* unlock again before freeing */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 589 | mutex_unlock(&rdev->mtx); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 590 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 591 | cfg80211_debugfs_rdev_del(rdev); |
Luis R. Rodriguez | 1ac6130 | 2009-05-02 00:37:21 -0400 | [diff] [blame] | 592 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 593 | /* If this device got a regulatory hint tell core its |
| 594 | * free to listen now to a new shiny device regulatory hint */ |
| 595 | reg_device_remove(wiphy); |
| 596 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 597 | list_del(&rdev->list); |
| 598 | device_del(&rdev->wiphy.dev); |
| 599 | debugfs_remove(rdev->wiphy.debugfsdir); |
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 | |
| 603 | cancel_work_sync(&rdev->conn_work); |
| 604 | cancel_work_sync(&rdev->scan_done_wk); |
| 605 | kfree(rdev->scan_req); |
| 606 | flush_work(&rdev->event_work); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 607 | } |
| 608 | EXPORT_SYMBOL(wiphy_unregister); |
| 609 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 610 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 611 | { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 612 | struct cfg80211_internal_bss *scan, *tmp; |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 613 | rfkill_destroy(rdev->rfkill); |
| 614 | mutex_destroy(&rdev->mtx); |
| 615 | mutex_destroy(&rdev->devlist_mtx); |
| 616 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
Johannes Berg | 78c1c7e | 2009-02-10 21:25:57 +0100 | [diff] [blame] | 617 | cfg80211_put_bss(&scan->pub); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 618 | kfree(rdev); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | void wiphy_free(struct wiphy *wiphy) |
| 622 | { |
| 623 | put_device(&wiphy->dev); |
| 624 | } |
| 625 | EXPORT_SYMBOL(wiphy_free); |
| 626 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 627 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
| 628 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 629 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 630 | |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 631 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
| 632 | schedule_work(&rdev->rfkill_sync); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 633 | } |
| 634 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); |
| 635 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 636 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
| 637 | unsigned long state, |
| 638 | void *ndev) |
| 639 | { |
| 640 | struct net_device *dev = ndev; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 641 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 642 | struct cfg80211_registered_device *rdev; |
| 643 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 644 | if (!wdev) |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 645 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 646 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 647 | rdev = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 648 | |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 649 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 650 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 651 | switch (state) { |
| 652 | case NETDEV_REGISTER: |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 653 | mutex_init(&wdev->mtx); |
| 654 | INIT_LIST_HEAD(&wdev->event_list); |
| 655 | spin_lock_init(&wdev->event_lock); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 656 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 657 | list_add(&wdev->list, &rdev->netdev_list); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 658 | /* can only change netns with wiphy */ |
| 659 | dev->features |= NETIF_F_NETNS_LOCAL; |
| 660 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 661 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
| 662 | "phy80211")) { |
| 663 | printk(KERN_ERR "wireless: failed to add phy80211 " |
| 664 | "symlink to netdev!\n"); |
| 665 | } |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 666 | wdev->netdev = dev; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 667 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 668 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 0864512 | 2009-05-11 13:54:58 +0200 | [diff] [blame] | 669 | #ifdef CONFIG_WIRELESS_EXT |
Johannes Berg | a9a1162 | 2009-07-27 12:01:53 +0200 | [diff] [blame] | 670 | if (!dev->wireless_handlers) |
| 671 | dev->wireless_handlers = &cfg80211_wext_handler; |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 672 | wdev->wext.default_key = -1; |
| 673 | wdev->wext.default_mgmt_key = -1; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 674 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | bc92afd | 2009-07-01 21:26:57 +0200 | [diff] [blame] | 675 | wdev->wext.ps = CONFIG_CFG80211_DEFAULT_PS_VALUE; |
| 676 | wdev->wext.ps_timeout = 500; |
| 677 | if (rdev->ops->set_power_mgmt) |
| 678 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, |
| 679 | wdev->wext.ps, |
| 680 | wdev->wext.ps_timeout)) { |
| 681 | /* assume this means it's off */ |
| 682 | wdev->wext.ps = false; |
| 683 | } |
Johannes Berg | 0864512 | 2009-05-11 13:54:58 +0200 | [diff] [blame] | 684 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 685 | break; |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 686 | case NETDEV_GOING_DOWN: |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 687 | switch (wdev->iftype) { |
| 688 | case NL80211_IFTYPE_ADHOC: |
| 689 | cfg80211_leave_ibss(rdev, dev, true); |
| 690 | break; |
| 691 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 692 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 693 | #ifdef CONFIG_WIRELESS_EXT |
| 694 | kfree(wdev->wext.ie); |
| 695 | wdev->wext.ie = NULL; |
| 696 | wdev->wext.ie_len = 0; |
Johannes Berg | 0eb1464 | 2009-07-02 15:49:03 +0200 | [diff] [blame] | 697 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 698 | #endif |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 699 | __cfg80211_disconnect(rdev, dev, |
| 700 | WLAN_REASON_DEAUTH_LEAVING, true); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame] | 701 | cfg80211_mlme_down(rdev, dev); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 702 | wdev_unlock(wdev); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 703 | break; |
| 704 | default: |
| 705 | break; |
| 706 | } |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 707 | break; |
| 708 | case NETDEV_UP: |
| 709 | #ifdef CONFIG_WIRELESS_EXT |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 710 | cfg80211_lock_rdev(rdev); |
| 711 | wdev_lock(wdev); |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 712 | switch (wdev->iftype) { |
| 713 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 714 | cfg80211_ibss_wext_join(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 715 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 716 | case NL80211_IFTYPE_STATION: |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 717 | cfg80211_mgd_wext_connect(rdev, wdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 718 | break; |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 719 | default: |
| 720 | break; |
| 721 | } |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 722 | wdev_unlock(wdev); |
| 723 | cfg80211_unlock_rdev(rdev); |
Johannes Berg | 04a773a | 2009-04-19 21:24:32 +0200 | [diff] [blame] | 724 | #endif |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 725 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 726 | case NETDEV_UNREGISTER: |
| 727 | mutex_lock(&rdev->devlist_mtx); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 728 | if (!list_empty(&wdev->list)) { |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 729 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
Johannes Berg | 2a783c1 | 2009-07-01 21:26:45 +0200 | [diff] [blame] | 730 | list_del_init(&wdev->list); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 731 | } |
| 732 | mutex_unlock(&rdev->devlist_mtx); |
Johannes Berg | 667503dd | 2009-07-07 03:56:11 +0200 | [diff] [blame] | 733 | mutex_destroy(&wdev->mtx); |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 734 | #ifdef CONFIG_WIRELESS_EXT |
| 735 | kfree(wdev->wext.keys); |
| 736 | #endif |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 737 | break; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 738 | case NETDEV_PRE_UP: |
Johannes Berg | 0b20633d | 2009-07-07 03:56:13 +0200 | [diff] [blame] | 739 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
| 740 | return notifier_from_errno(-EOPNOTSUPP); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 741 | if (rfkill_blocked(rdev->rfkill)) |
| 742 | return notifier_from_errno(-ERFKILL); |
| 743 | break; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 744 | } |
| 745 | |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 746 | return NOTIFY_DONE; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | static struct notifier_block cfg80211_netdev_notifier = { |
| 750 | .notifier_call = cfg80211_netdev_notifier_call, |
| 751 | }; |
| 752 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 753 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
| 754 | { |
| 755 | struct cfg80211_registered_device *rdev; |
| 756 | |
| 757 | rtnl_lock(); |
| 758 | mutex_lock(&cfg80211_mutex); |
| 759 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 760 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
| 761 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); |
| 762 | } |
| 763 | mutex_unlock(&cfg80211_mutex); |
| 764 | rtnl_unlock(); |
| 765 | } |
| 766 | |
| 767 | static struct pernet_operations cfg80211_pernet_ops = { |
| 768 | .exit = cfg80211_pernet_exit, |
| 769 | }; |
| 770 | |
| 771 | static int __init cfg80211_init(void) |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 772 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 773 | int err; |
| 774 | |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 775 | err = register_pernet_device(&cfg80211_pernet_ops); |
| 776 | if (err) |
| 777 | goto out_fail_pernet; |
| 778 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 779 | err = wiphy_sysfs_init(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 780 | if (err) |
| 781 | goto out_fail_sysfs; |
| 782 | |
| 783 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); |
| 784 | if (err) |
| 785 | goto out_fail_notifier; |
| 786 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 787 | err = nl80211_init(); |
| 788 | if (err) |
| 789 | goto out_fail_nl80211; |
| 790 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 791 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
| 792 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 793 | err = regulatory_init(); |
| 794 | if (err) |
| 795 | goto out_fail_reg; |
| 796 | |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 797 | return 0; |
| 798 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 799 | out_fail_reg: |
| 800 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 801 | out_fail_nl80211: |
| 802 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 803 | out_fail_notifier: |
| 804 | wiphy_sysfs_exit(); |
| 805 | out_fail_sysfs: |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 806 | unregister_pernet_device(&cfg80211_pernet_ops); |
| 807 | out_fail_pernet: |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 808 | return err; |
| 809 | } |
Johannes Berg | 3a46246 | 2007-09-10 13:44:45 +0200 | [diff] [blame] | 810 | subsys_initcall(cfg80211_init); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 811 | |
| 812 | static void cfg80211_exit(void) |
| 813 | { |
| 814 | debugfs_remove(ieee80211_debugfs_dir); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 815 | nl80211_exit(); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 816 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
| 817 | wiphy_sysfs_exit(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 818 | regulatory_exit(); |
Johannes Berg | 463d018 | 2009-07-14 00:33:35 +0200 | [diff] [blame] | 819 | unregister_pernet_device(&cfg80211_pernet_ops); |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 820 | } |
| 821 | module_exit(cfg80211_exit); |