Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1 | /* |
| 2 | * This is the new netlink-based wireless configuration interface. |
| 3 | * |
| 4 | * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> |
| 5 | */ |
| 6 | |
| 7 | #include <linux/if.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/err.h> |
| 10 | #include <linux/mutex.h> |
| 11 | #include <linux/list.h> |
| 12 | #include <linux/if_ether.h> |
| 13 | #include <linux/ieee80211.h> |
| 14 | #include <linux/nl80211.h> |
| 15 | #include <linux/rtnetlink.h> |
| 16 | #include <linux/netlink.h> |
| 17 | #include <net/genetlink.h> |
| 18 | #include <net/cfg80211.h> |
| 19 | #include "core.h" |
| 20 | #include "nl80211.h" |
| 21 | |
| 22 | /* the netlink family */ |
| 23 | static struct genl_family nl80211_fam = { |
| 24 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ |
| 25 | .name = "nl80211", /* have users key off the name instead */ |
| 26 | .hdrsize = 0, /* no private header */ |
| 27 | .version = 1, /* no particular meaning now */ |
| 28 | .maxattr = NL80211_ATTR_MAX, |
| 29 | }; |
| 30 | |
| 31 | /* internal helper: get drv and dev */ |
| 32 | static int get_drv_dev_by_info_ifindex(struct genl_info *info, |
| 33 | struct cfg80211_registered_device **drv, |
| 34 | struct net_device **dev) |
| 35 | { |
| 36 | int ifindex; |
| 37 | |
| 38 | if (!info->attrs[NL80211_ATTR_IFINDEX]) |
| 39 | return -EINVAL; |
| 40 | |
| 41 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
| 42 | *dev = dev_get_by_index(&init_net, ifindex); |
| 43 | if (!*dev) |
| 44 | return -ENODEV; |
| 45 | |
| 46 | *drv = cfg80211_get_dev_from_ifindex(ifindex); |
| 47 | if (IS_ERR(*drv)) { |
| 48 | dev_put(*dev); |
| 49 | return PTR_ERR(*drv); |
| 50 | } |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | /* policy for the attributes */ |
| 56 | static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { |
| 57 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, |
| 58 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, |
| 59 | .len = BUS_ID_SIZE-1 }, |
| 60 | |
| 61 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, |
| 62 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, |
| 63 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 64 | |
| 65 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, |
| 66 | |
| 67 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, |
| 68 | .len = WLAN_MAX_KEY_LEN }, |
| 69 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, |
| 70 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, |
| 71 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, |
Johannes Berg | ed1b6cc | 2007-12-19 02:03:32 +0100 | [diff] [blame] | 72 | |
| 73 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, |
| 74 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, |
| 75 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, |
| 76 | .len = IEEE80211_MAX_DATA_LEN }, |
| 77 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, |
| 78 | .len = IEEE80211_MAX_DATA_LEN }, |
Johannes Berg | 5727ef1 | 2007-12-19 02:03:34 +0100 | [diff] [blame] | 79 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
| 80 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, |
| 81 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, |
| 82 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, |
| 83 | .len = NL80211_MAX_SUPP_RATES }, |
| 84 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 85 | [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED }, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | /* message building helper */ |
| 89 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, |
| 90 | int flags, u8 cmd) |
| 91 | { |
| 92 | /* since there is no private header just add the generic one */ |
| 93 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); |
| 94 | } |
| 95 | |
| 96 | /* netlink command implementations */ |
| 97 | |
| 98 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| 99 | struct cfg80211_registered_device *dev) |
| 100 | { |
| 101 | void *hdr; |
Johannes Berg | ee688b00 | 2008-01-24 19:38:39 +0100 | [diff] [blame] | 102 | struct nlattr *nl_bands, *nl_band; |
| 103 | struct nlattr *nl_freqs, *nl_freq; |
| 104 | struct nlattr *nl_rates, *nl_rate; |
| 105 | enum ieee80211_band band; |
| 106 | struct ieee80211_channel *chan; |
| 107 | struct ieee80211_rate *rate; |
| 108 | int i; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 109 | |
| 110 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); |
| 111 | if (!hdr) |
| 112 | return -1; |
| 113 | |
| 114 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); |
| 115 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); |
Johannes Berg | ee688b00 | 2008-01-24 19:38:39 +0100 | [diff] [blame] | 116 | |
| 117 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); |
| 118 | if (!nl_bands) |
| 119 | goto nla_put_failure; |
| 120 | |
| 121 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 122 | if (!dev->wiphy.bands[band]) |
| 123 | continue; |
| 124 | |
| 125 | nl_band = nla_nest_start(msg, band); |
| 126 | if (!nl_band) |
| 127 | goto nla_put_failure; |
| 128 | |
| 129 | /* add frequencies */ |
| 130 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); |
| 131 | if (!nl_freqs) |
| 132 | goto nla_put_failure; |
| 133 | |
| 134 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { |
| 135 | nl_freq = nla_nest_start(msg, i); |
| 136 | if (!nl_freq) |
| 137 | goto nla_put_failure; |
| 138 | |
| 139 | chan = &dev->wiphy.bands[band]->channels[i]; |
| 140 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, |
| 141 | chan->center_freq); |
| 142 | |
| 143 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
| 144 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); |
| 145 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
| 146 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); |
| 147 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) |
| 148 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); |
| 149 | if (chan->flags & IEEE80211_CHAN_RADAR) |
| 150 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); |
| 151 | |
| 152 | nla_nest_end(msg, nl_freq); |
| 153 | } |
| 154 | |
| 155 | nla_nest_end(msg, nl_freqs); |
| 156 | |
| 157 | /* add bitrates */ |
| 158 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); |
| 159 | if (!nl_rates) |
| 160 | goto nla_put_failure; |
| 161 | |
| 162 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { |
| 163 | nl_rate = nla_nest_start(msg, i); |
| 164 | if (!nl_rate) |
| 165 | goto nla_put_failure; |
| 166 | |
| 167 | rate = &dev->wiphy.bands[band]->bitrates[i]; |
| 168 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, |
| 169 | rate->bitrate); |
| 170 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) |
| 171 | NLA_PUT_FLAG(msg, |
| 172 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); |
| 173 | |
| 174 | nla_nest_end(msg, nl_rate); |
| 175 | } |
| 176 | |
| 177 | nla_nest_end(msg, nl_rates); |
| 178 | |
| 179 | nla_nest_end(msg, nl_band); |
| 180 | } |
| 181 | nla_nest_end(msg, nl_bands); |
| 182 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 183 | return genlmsg_end(msg, hdr); |
| 184 | |
| 185 | nla_put_failure: |
| 186 | return genlmsg_cancel(msg, hdr); |
| 187 | } |
| 188 | |
| 189 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) |
| 190 | { |
| 191 | int idx = 0; |
| 192 | int start = cb->args[0]; |
| 193 | struct cfg80211_registered_device *dev; |
| 194 | |
| 195 | mutex_lock(&cfg80211_drv_mutex); |
| 196 | list_for_each_entry(dev, &cfg80211_drv_list, list) { |
| 197 | if (++idx < start) |
| 198 | continue; |
| 199 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, |
| 200 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| 201 | dev) < 0) |
| 202 | break; |
| 203 | } |
| 204 | mutex_unlock(&cfg80211_drv_mutex); |
| 205 | |
| 206 | cb->args[0] = idx; |
| 207 | |
| 208 | return skb->len; |
| 209 | } |
| 210 | |
| 211 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) |
| 212 | { |
| 213 | struct sk_buff *msg; |
| 214 | struct cfg80211_registered_device *dev; |
| 215 | |
| 216 | dev = cfg80211_get_dev_from_info(info); |
| 217 | if (IS_ERR(dev)) |
| 218 | return PTR_ERR(dev); |
| 219 | |
| 220 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 221 | if (!msg) |
| 222 | goto out_err; |
| 223 | |
| 224 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) |
| 225 | goto out_free; |
| 226 | |
| 227 | cfg80211_put_dev(dev); |
| 228 | |
| 229 | return genlmsg_unicast(msg, info->snd_pid); |
| 230 | |
| 231 | out_free: |
| 232 | nlmsg_free(msg); |
| 233 | out_err: |
| 234 | cfg80211_put_dev(dev); |
| 235 | return -ENOBUFS; |
| 236 | } |
| 237 | |
| 238 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
| 239 | { |
| 240 | struct cfg80211_registered_device *rdev; |
| 241 | int result; |
| 242 | |
| 243 | if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) |
| 244 | return -EINVAL; |
| 245 | |
| 246 | rdev = cfg80211_get_dev_from_info(info); |
| 247 | if (IS_ERR(rdev)) |
| 248 | return PTR_ERR(rdev); |
| 249 | |
| 250 | result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); |
| 251 | |
| 252 | cfg80211_put_dev(rdev); |
| 253 | return result; |
| 254 | } |
| 255 | |
| 256 | |
| 257 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| 258 | struct net_device *dev) |
| 259 | { |
| 260 | void *hdr; |
| 261 | |
| 262 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); |
| 263 | if (!hdr) |
| 264 | return -1; |
| 265 | |
| 266 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| 267 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); |
| 268 | /* TODO: interface type */ |
| 269 | return genlmsg_end(msg, hdr); |
| 270 | |
| 271 | nla_put_failure: |
| 272 | return genlmsg_cancel(msg, hdr); |
| 273 | } |
| 274 | |
| 275 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) |
| 276 | { |
| 277 | int wp_idx = 0; |
| 278 | int if_idx = 0; |
| 279 | int wp_start = cb->args[0]; |
| 280 | int if_start = cb->args[1]; |
| 281 | struct cfg80211_registered_device *dev; |
| 282 | struct wireless_dev *wdev; |
| 283 | |
| 284 | mutex_lock(&cfg80211_drv_mutex); |
| 285 | list_for_each_entry(dev, &cfg80211_drv_list, list) { |
| 286 | if (++wp_idx < wp_start) |
| 287 | continue; |
| 288 | if_idx = 0; |
| 289 | |
| 290 | mutex_lock(&dev->devlist_mtx); |
| 291 | list_for_each_entry(wdev, &dev->netdev_list, list) { |
| 292 | if (++if_idx < if_start) |
| 293 | continue; |
| 294 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
| 295 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| 296 | wdev->netdev) < 0) |
| 297 | break; |
| 298 | } |
| 299 | mutex_unlock(&dev->devlist_mtx); |
| 300 | } |
| 301 | mutex_unlock(&cfg80211_drv_mutex); |
| 302 | |
| 303 | cb->args[0] = wp_idx; |
| 304 | cb->args[1] = if_idx; |
| 305 | |
| 306 | return skb->len; |
| 307 | } |
| 308 | |
| 309 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) |
| 310 | { |
| 311 | struct sk_buff *msg; |
| 312 | struct cfg80211_registered_device *dev; |
| 313 | struct net_device *netdev; |
| 314 | int err; |
| 315 | |
| 316 | err = get_drv_dev_by_info_ifindex(info, &dev, &netdev); |
| 317 | if (err) |
| 318 | return err; |
| 319 | |
| 320 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 321 | if (!msg) |
| 322 | goto out_err; |
| 323 | |
| 324 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) |
| 325 | goto out_free; |
| 326 | |
| 327 | dev_put(netdev); |
| 328 | cfg80211_put_dev(dev); |
| 329 | |
| 330 | return genlmsg_unicast(msg, info->snd_pid); |
| 331 | |
| 332 | out_free: |
| 333 | nlmsg_free(msg); |
| 334 | out_err: |
| 335 | dev_put(netdev); |
| 336 | cfg80211_put_dev(dev); |
| 337 | return -ENOBUFS; |
| 338 | } |
| 339 | |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 340 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { |
| 341 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, |
| 342 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, |
| 343 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, |
| 344 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, |
| 345 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, |
| 346 | }; |
| 347 | |
| 348 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) |
| 349 | { |
| 350 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; |
| 351 | int flag; |
| 352 | |
| 353 | *mntrflags = 0; |
| 354 | |
| 355 | if (!nla) |
| 356 | return -EINVAL; |
| 357 | |
| 358 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, |
| 359 | nla, mntr_flags_policy)) |
| 360 | return -EINVAL; |
| 361 | |
| 362 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) |
| 363 | if (flags[flag]) |
| 364 | *mntrflags |= (1<<flag); |
| 365 | |
| 366 | return 0; |
| 367 | } |
| 368 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 369 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
| 370 | { |
| 371 | struct cfg80211_registered_device *drv; |
| 372 | int err, ifindex; |
| 373 | enum nl80211_iftype type; |
| 374 | struct net_device *dev; |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 375 | u32 flags; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 376 | |
| 377 | if (info->attrs[NL80211_ATTR_IFTYPE]) { |
| 378 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
| 379 | if (type > NL80211_IFTYPE_MAX) |
| 380 | return -EINVAL; |
| 381 | } else |
| 382 | return -EINVAL; |
| 383 | |
| 384 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 385 | if (err) |
| 386 | return err; |
| 387 | ifindex = dev->ifindex; |
| 388 | dev_put(dev); |
| 389 | |
| 390 | if (!drv->ops->change_virtual_intf) { |
| 391 | err = -EOPNOTSUPP; |
| 392 | goto unlock; |
| 393 | } |
| 394 | |
| 395 | rtnl_lock(); |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 396 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
| 397 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, |
| 398 | &flags); |
| 399 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, |
| 400 | type, err ? NULL : &flags); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 401 | rtnl_unlock(); |
| 402 | |
| 403 | unlock: |
| 404 | cfg80211_put_dev(drv); |
| 405 | return err; |
| 406 | } |
| 407 | |
| 408 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) |
| 409 | { |
| 410 | struct cfg80211_registered_device *drv; |
| 411 | int err; |
| 412 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 413 | u32 flags; |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 414 | |
| 415 | if (!info->attrs[NL80211_ATTR_IFNAME]) |
| 416 | return -EINVAL; |
| 417 | |
| 418 | if (info->attrs[NL80211_ATTR_IFTYPE]) { |
| 419 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
| 420 | if (type > NL80211_IFTYPE_MAX) |
| 421 | return -EINVAL; |
| 422 | } |
| 423 | |
| 424 | drv = cfg80211_get_dev_from_info(info); |
| 425 | if (IS_ERR(drv)) |
| 426 | return PTR_ERR(drv); |
| 427 | |
| 428 | if (!drv->ops->add_virtual_intf) { |
| 429 | err = -EOPNOTSUPP; |
| 430 | goto unlock; |
| 431 | } |
| 432 | |
| 433 | rtnl_lock(); |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 434 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
| 435 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, |
| 436 | &flags); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 437 | err = drv->ops->add_virtual_intf(&drv->wiphy, |
Michael Wu | 66f7ac5 | 2008-01-31 19:48:22 +0100 | [diff] [blame^] | 438 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
| 439 | type, err ? NULL : &flags); |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 440 | rtnl_unlock(); |
| 441 | |
| 442 | unlock: |
| 443 | cfg80211_put_dev(drv); |
| 444 | return err; |
| 445 | } |
| 446 | |
| 447 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) |
| 448 | { |
| 449 | struct cfg80211_registered_device *drv; |
| 450 | int ifindex, err; |
| 451 | struct net_device *dev; |
| 452 | |
| 453 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 454 | if (err) |
| 455 | return err; |
| 456 | ifindex = dev->ifindex; |
| 457 | dev_put(dev); |
| 458 | |
| 459 | if (!drv->ops->del_virtual_intf) { |
| 460 | err = -EOPNOTSUPP; |
| 461 | goto out; |
| 462 | } |
| 463 | |
| 464 | rtnl_lock(); |
| 465 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); |
| 466 | rtnl_unlock(); |
| 467 | |
| 468 | out: |
| 469 | cfg80211_put_dev(drv); |
| 470 | return err; |
| 471 | } |
| 472 | |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 473 | struct get_key_cookie { |
| 474 | struct sk_buff *msg; |
| 475 | int error; |
| 476 | }; |
| 477 | |
| 478 | static void get_key_callback(void *c, struct key_params *params) |
| 479 | { |
| 480 | struct get_key_cookie *cookie = c; |
| 481 | |
| 482 | if (params->key) |
| 483 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, |
| 484 | params->key_len, params->key); |
| 485 | |
| 486 | if (params->seq) |
| 487 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, |
| 488 | params->seq_len, params->seq); |
| 489 | |
| 490 | if (params->cipher) |
| 491 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, |
| 492 | params->cipher); |
| 493 | |
| 494 | return; |
| 495 | nla_put_failure: |
| 496 | cookie->error = 1; |
| 497 | } |
| 498 | |
| 499 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) |
| 500 | { |
| 501 | struct cfg80211_registered_device *drv; |
| 502 | int err; |
| 503 | struct net_device *dev; |
| 504 | u8 key_idx = 0; |
| 505 | u8 *mac_addr = NULL; |
| 506 | struct get_key_cookie cookie = { |
| 507 | .error = 0, |
| 508 | }; |
| 509 | void *hdr; |
| 510 | struct sk_buff *msg; |
| 511 | |
| 512 | if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| 513 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| 514 | |
| 515 | if (key_idx > 3) |
| 516 | return -EINVAL; |
| 517 | |
| 518 | if (info->attrs[NL80211_ATTR_MAC]) |
| 519 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 520 | |
| 521 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 522 | if (err) |
| 523 | return err; |
| 524 | |
| 525 | if (!drv->ops->get_key) { |
| 526 | err = -EOPNOTSUPP; |
| 527 | goto out; |
| 528 | } |
| 529 | |
| 530 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 531 | if (!msg) { |
| 532 | err = -ENOMEM; |
| 533 | goto out; |
| 534 | } |
| 535 | |
| 536 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| 537 | NL80211_CMD_NEW_KEY); |
| 538 | |
| 539 | if (IS_ERR(hdr)) { |
| 540 | err = PTR_ERR(hdr); |
| 541 | goto out; |
| 542 | } |
| 543 | |
| 544 | cookie.msg = msg; |
| 545 | |
| 546 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| 547 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); |
| 548 | if (mac_addr) |
| 549 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| 550 | |
| 551 | rtnl_lock(); |
| 552 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, |
| 553 | &cookie, get_key_callback); |
| 554 | rtnl_unlock(); |
| 555 | |
| 556 | if (err) |
| 557 | goto out; |
| 558 | |
| 559 | if (cookie.error) |
| 560 | goto nla_put_failure; |
| 561 | |
| 562 | genlmsg_end(msg, hdr); |
| 563 | err = genlmsg_unicast(msg, info->snd_pid); |
| 564 | goto out; |
| 565 | |
| 566 | nla_put_failure: |
| 567 | err = -ENOBUFS; |
| 568 | nlmsg_free(msg); |
| 569 | out: |
| 570 | cfg80211_put_dev(drv); |
| 571 | dev_put(dev); |
| 572 | return err; |
| 573 | } |
| 574 | |
| 575 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) |
| 576 | { |
| 577 | struct cfg80211_registered_device *drv; |
| 578 | int err; |
| 579 | struct net_device *dev; |
| 580 | u8 key_idx; |
| 581 | |
| 582 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) |
| 583 | return -EINVAL; |
| 584 | |
| 585 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| 586 | |
| 587 | if (key_idx > 3) |
| 588 | return -EINVAL; |
| 589 | |
| 590 | /* currently only support setting default key */ |
| 591 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT]) |
| 592 | return -EINVAL; |
| 593 | |
| 594 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 595 | if (err) |
| 596 | return err; |
| 597 | |
| 598 | if (!drv->ops->set_default_key) { |
| 599 | err = -EOPNOTSUPP; |
| 600 | goto out; |
| 601 | } |
| 602 | |
| 603 | rtnl_lock(); |
| 604 | err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx); |
| 605 | rtnl_unlock(); |
| 606 | |
| 607 | out: |
| 608 | cfg80211_put_dev(drv); |
| 609 | dev_put(dev); |
| 610 | return err; |
| 611 | } |
| 612 | |
| 613 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) |
| 614 | { |
| 615 | struct cfg80211_registered_device *drv; |
| 616 | int err; |
| 617 | struct net_device *dev; |
| 618 | struct key_params params; |
| 619 | u8 key_idx = 0; |
| 620 | u8 *mac_addr = NULL; |
| 621 | |
| 622 | memset(¶ms, 0, sizeof(params)); |
| 623 | |
| 624 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) |
| 625 | return -EINVAL; |
| 626 | |
| 627 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { |
| 628 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); |
| 629 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); |
| 630 | } |
| 631 | |
| 632 | if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| 633 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| 634 | |
| 635 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); |
| 636 | |
| 637 | if (info->attrs[NL80211_ATTR_MAC]) |
| 638 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 639 | |
| 640 | if (key_idx > 3) |
| 641 | return -EINVAL; |
| 642 | |
| 643 | /* |
| 644 | * Disallow pairwise keys with non-zero index unless it's WEP |
| 645 | * (because current deployments use pairwise WEP keys with |
| 646 | * non-zero indizes but 802.11i clearly specifies to use zero) |
| 647 | */ |
| 648 | if (mac_addr && key_idx && |
| 649 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && |
| 650 | params.cipher != WLAN_CIPHER_SUITE_WEP104) |
| 651 | return -EINVAL; |
| 652 | |
| 653 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ |
| 654 | switch (params.cipher) { |
| 655 | case WLAN_CIPHER_SUITE_WEP40: |
| 656 | if (params.key_len != 5) |
| 657 | return -EINVAL; |
| 658 | break; |
| 659 | case WLAN_CIPHER_SUITE_TKIP: |
| 660 | if (params.key_len != 32) |
| 661 | return -EINVAL; |
| 662 | break; |
| 663 | case WLAN_CIPHER_SUITE_CCMP: |
| 664 | if (params.key_len != 16) |
| 665 | return -EINVAL; |
| 666 | break; |
| 667 | case WLAN_CIPHER_SUITE_WEP104: |
| 668 | if (params.key_len != 13) |
| 669 | return -EINVAL; |
| 670 | break; |
| 671 | default: |
| 672 | return -EINVAL; |
| 673 | } |
| 674 | |
| 675 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 676 | if (err) |
| 677 | return err; |
| 678 | |
| 679 | if (!drv->ops->add_key) { |
| 680 | err = -EOPNOTSUPP; |
| 681 | goto out; |
| 682 | } |
| 683 | |
| 684 | rtnl_lock(); |
| 685 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); |
| 686 | rtnl_unlock(); |
| 687 | |
| 688 | out: |
| 689 | cfg80211_put_dev(drv); |
| 690 | dev_put(dev); |
| 691 | return err; |
| 692 | } |
| 693 | |
| 694 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) |
| 695 | { |
| 696 | struct cfg80211_registered_device *drv; |
| 697 | int err; |
| 698 | struct net_device *dev; |
| 699 | u8 key_idx = 0; |
| 700 | u8 *mac_addr = NULL; |
| 701 | |
| 702 | if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| 703 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| 704 | |
| 705 | if (key_idx > 3) |
| 706 | return -EINVAL; |
| 707 | |
| 708 | if (info->attrs[NL80211_ATTR_MAC]) |
| 709 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 710 | |
| 711 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 712 | if (err) |
| 713 | return err; |
| 714 | |
| 715 | if (!drv->ops->del_key) { |
| 716 | err = -EOPNOTSUPP; |
| 717 | goto out; |
| 718 | } |
| 719 | |
| 720 | rtnl_lock(); |
| 721 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); |
| 722 | rtnl_unlock(); |
| 723 | |
| 724 | out: |
| 725 | cfg80211_put_dev(drv); |
| 726 | dev_put(dev); |
| 727 | return err; |
| 728 | } |
| 729 | |
Johannes Berg | ed1b6cc | 2007-12-19 02:03:32 +0100 | [diff] [blame] | 730 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
| 731 | { |
| 732 | int (*call)(struct wiphy *wiphy, struct net_device *dev, |
| 733 | struct beacon_parameters *info); |
| 734 | struct cfg80211_registered_device *drv; |
| 735 | int err; |
| 736 | struct net_device *dev; |
| 737 | struct beacon_parameters params; |
| 738 | int haveinfo = 0; |
| 739 | |
| 740 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 741 | if (err) |
| 742 | return err; |
| 743 | |
| 744 | switch (info->genlhdr->cmd) { |
| 745 | case NL80211_CMD_NEW_BEACON: |
| 746 | /* these are required for NEW_BEACON */ |
| 747 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || |
| 748 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || |
| 749 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
| 750 | err = -EINVAL; |
| 751 | goto out; |
| 752 | } |
| 753 | |
| 754 | call = drv->ops->add_beacon; |
| 755 | break; |
| 756 | case NL80211_CMD_SET_BEACON: |
| 757 | call = drv->ops->set_beacon; |
| 758 | break; |
| 759 | default: |
| 760 | WARN_ON(1); |
| 761 | err = -EOPNOTSUPP; |
| 762 | goto out; |
| 763 | } |
| 764 | |
| 765 | if (!call) { |
| 766 | err = -EOPNOTSUPP; |
| 767 | goto out; |
| 768 | } |
| 769 | |
| 770 | memset(¶ms, 0, sizeof(params)); |
| 771 | |
| 772 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { |
| 773 | params.interval = |
| 774 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
| 775 | haveinfo = 1; |
| 776 | } |
| 777 | |
| 778 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { |
| 779 | params.dtim_period = |
| 780 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); |
| 781 | haveinfo = 1; |
| 782 | } |
| 783 | |
| 784 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
| 785 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
| 786 | params.head_len = |
| 787 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
| 788 | haveinfo = 1; |
| 789 | } |
| 790 | |
| 791 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { |
| 792 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
| 793 | params.tail_len = |
| 794 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
| 795 | haveinfo = 1; |
| 796 | } |
| 797 | |
| 798 | if (!haveinfo) { |
| 799 | err = -EINVAL; |
| 800 | goto out; |
| 801 | } |
| 802 | |
| 803 | rtnl_lock(); |
| 804 | err = call(&drv->wiphy, dev, ¶ms); |
| 805 | rtnl_unlock(); |
| 806 | |
| 807 | out: |
| 808 | cfg80211_put_dev(drv); |
| 809 | dev_put(dev); |
| 810 | return err; |
| 811 | } |
| 812 | |
| 813 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) |
| 814 | { |
| 815 | struct cfg80211_registered_device *drv; |
| 816 | int err; |
| 817 | struct net_device *dev; |
| 818 | |
| 819 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 820 | if (err) |
| 821 | return err; |
| 822 | |
| 823 | if (!drv->ops->del_beacon) { |
| 824 | err = -EOPNOTSUPP; |
| 825 | goto out; |
| 826 | } |
| 827 | |
| 828 | rtnl_lock(); |
| 829 | err = drv->ops->del_beacon(&drv->wiphy, dev); |
| 830 | rtnl_unlock(); |
| 831 | |
| 832 | out: |
| 833 | cfg80211_put_dev(drv); |
| 834 | dev_put(dev); |
| 835 | return err; |
| 836 | } |
| 837 | |
Johannes Berg | 5727ef1 | 2007-12-19 02:03:34 +0100 | [diff] [blame] | 838 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
| 839 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, |
| 840 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, |
| 841 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, |
| 842 | }; |
| 843 | |
| 844 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) |
| 845 | { |
| 846 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; |
| 847 | int flag; |
| 848 | |
| 849 | *staflags = 0; |
| 850 | |
| 851 | if (!nla) |
| 852 | return 0; |
| 853 | |
| 854 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, |
| 855 | nla, sta_flags_policy)) |
| 856 | return -EINVAL; |
| 857 | |
| 858 | *staflags = STATION_FLAG_CHANGED; |
| 859 | |
| 860 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) |
| 861 | if (flags[flag]) |
| 862 | *staflags |= (1<<flag); |
| 863 | |
| 864 | return 0; |
| 865 | } |
| 866 | |
Johannes Berg | fd5b74d | 2007-12-19 02:03:36 +0100 | [diff] [blame] | 867 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
| 868 | int flags, struct net_device *dev, |
| 869 | u8 *mac_addr, struct station_stats *stats) |
| 870 | { |
| 871 | void *hdr; |
| 872 | struct nlattr *statsattr; |
| 873 | |
| 874 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); |
| 875 | if (!hdr) |
| 876 | return -1; |
| 877 | |
| 878 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| 879 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| 880 | |
| 881 | statsattr = nla_nest_start(msg, NL80211_ATTR_STA_STATS); |
| 882 | if (!statsattr) |
| 883 | goto nla_put_failure; |
| 884 | if (stats->filled & STATION_STAT_INACTIVE_TIME) |
| 885 | NLA_PUT_U32(msg, NL80211_STA_STAT_INACTIVE_TIME, |
| 886 | stats->inactive_time); |
| 887 | if (stats->filled & STATION_STAT_RX_BYTES) |
| 888 | NLA_PUT_U32(msg, NL80211_STA_STAT_RX_BYTES, |
| 889 | stats->rx_bytes); |
| 890 | if (stats->filled & STATION_STAT_TX_BYTES) |
| 891 | NLA_PUT_U32(msg, NL80211_STA_STAT_TX_BYTES, |
| 892 | stats->tx_bytes); |
| 893 | |
| 894 | nla_nest_end(msg, statsattr); |
| 895 | |
| 896 | return genlmsg_end(msg, hdr); |
| 897 | |
| 898 | nla_put_failure: |
| 899 | return genlmsg_cancel(msg, hdr); |
| 900 | } |
| 901 | |
| 902 | |
Johannes Berg | 5727ef1 | 2007-12-19 02:03:34 +0100 | [diff] [blame] | 903 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
| 904 | { |
Johannes Berg | fd5b74d | 2007-12-19 02:03:36 +0100 | [diff] [blame] | 905 | struct cfg80211_registered_device *drv; |
| 906 | int err; |
| 907 | struct net_device *dev; |
| 908 | struct station_stats stats; |
| 909 | struct sk_buff *msg; |
| 910 | u8 *mac_addr = NULL; |
| 911 | |
| 912 | memset(&stats, 0, sizeof(stats)); |
| 913 | |
| 914 | if (!info->attrs[NL80211_ATTR_MAC]) |
| 915 | return -EINVAL; |
| 916 | |
| 917 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 918 | |
| 919 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 920 | if (err) |
| 921 | return err; |
| 922 | |
| 923 | if (!drv->ops->get_station) { |
| 924 | err = -EOPNOTSUPP; |
| 925 | goto out; |
| 926 | } |
| 927 | |
| 928 | rtnl_lock(); |
| 929 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &stats); |
| 930 | rtnl_unlock(); |
| 931 | |
| 932 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 933 | if (!msg) |
| 934 | goto out; |
| 935 | |
| 936 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, |
| 937 | dev, mac_addr, &stats) < 0) |
| 938 | goto out_free; |
| 939 | |
| 940 | err = genlmsg_unicast(msg, info->snd_pid); |
| 941 | goto out; |
| 942 | |
| 943 | out_free: |
| 944 | nlmsg_free(msg); |
| 945 | |
| 946 | out: |
| 947 | cfg80211_put_dev(drv); |
| 948 | dev_put(dev); |
| 949 | return err; |
Johannes Berg | 5727ef1 | 2007-12-19 02:03:34 +0100 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | /* |
| 953 | * Get vlan interface making sure it is on the right wiphy. |
| 954 | */ |
| 955 | static int get_vlan(struct nlattr *vlanattr, |
| 956 | struct cfg80211_registered_device *rdev, |
| 957 | struct net_device **vlan) |
| 958 | { |
| 959 | *vlan = NULL; |
| 960 | |
| 961 | if (vlanattr) { |
| 962 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); |
| 963 | if (!*vlan) |
| 964 | return -ENODEV; |
| 965 | if (!(*vlan)->ieee80211_ptr) |
| 966 | return -EINVAL; |
| 967 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) |
| 968 | return -EINVAL; |
| 969 | } |
| 970 | return 0; |
| 971 | } |
| 972 | |
| 973 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) |
| 974 | { |
| 975 | struct cfg80211_registered_device *drv; |
| 976 | int err; |
| 977 | struct net_device *dev; |
| 978 | struct station_parameters params; |
| 979 | u8 *mac_addr = NULL; |
| 980 | |
| 981 | memset(¶ms, 0, sizeof(params)); |
| 982 | |
| 983 | params.listen_interval = -1; |
| 984 | |
| 985 | if (info->attrs[NL80211_ATTR_STA_AID]) |
| 986 | return -EINVAL; |
| 987 | |
| 988 | if (!info->attrs[NL80211_ATTR_MAC]) |
| 989 | return -EINVAL; |
| 990 | |
| 991 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 992 | |
| 993 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { |
| 994 | params.supported_rates = |
| 995 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| 996 | params.supported_rates_len = |
| 997 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| 998 | } |
| 999 | |
| 1000 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
| 1001 | params.listen_interval = |
| 1002 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
| 1003 | |
| 1004 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], |
| 1005 | ¶ms.station_flags)) |
| 1006 | return -EINVAL; |
| 1007 | |
| 1008 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 1009 | if (err) |
| 1010 | return err; |
| 1011 | |
| 1012 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); |
| 1013 | if (err) |
| 1014 | goto out; |
| 1015 | |
| 1016 | if (!drv->ops->change_station) { |
| 1017 | err = -EOPNOTSUPP; |
| 1018 | goto out; |
| 1019 | } |
| 1020 | |
| 1021 | rtnl_lock(); |
| 1022 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); |
| 1023 | rtnl_unlock(); |
| 1024 | |
| 1025 | out: |
| 1026 | if (params.vlan) |
| 1027 | dev_put(params.vlan); |
| 1028 | cfg80211_put_dev(drv); |
| 1029 | dev_put(dev); |
| 1030 | return err; |
| 1031 | } |
| 1032 | |
| 1033 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) |
| 1034 | { |
| 1035 | struct cfg80211_registered_device *drv; |
| 1036 | int err; |
| 1037 | struct net_device *dev; |
| 1038 | struct station_parameters params; |
| 1039 | u8 *mac_addr = NULL; |
| 1040 | |
| 1041 | memset(¶ms, 0, sizeof(params)); |
| 1042 | |
| 1043 | if (!info->attrs[NL80211_ATTR_MAC]) |
| 1044 | return -EINVAL; |
| 1045 | |
| 1046 | if (!info->attrs[NL80211_ATTR_STA_AID]) |
| 1047 | return -EINVAL; |
| 1048 | |
| 1049 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
| 1050 | return -EINVAL; |
| 1051 | |
| 1052 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) |
| 1053 | return -EINVAL; |
| 1054 | |
| 1055 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 1056 | params.supported_rates = |
| 1057 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| 1058 | params.supported_rates_len = |
| 1059 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| 1060 | params.listen_interval = |
| 1061 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
| 1062 | params.listen_interval = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
| 1063 | |
| 1064 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], |
| 1065 | ¶ms.station_flags)) |
| 1066 | return -EINVAL; |
| 1067 | |
| 1068 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 1069 | if (err) |
| 1070 | return err; |
| 1071 | |
| 1072 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); |
| 1073 | if (err) |
| 1074 | goto out; |
| 1075 | |
| 1076 | if (!drv->ops->add_station) { |
| 1077 | err = -EOPNOTSUPP; |
| 1078 | goto out; |
| 1079 | } |
| 1080 | |
| 1081 | rtnl_lock(); |
| 1082 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); |
| 1083 | rtnl_unlock(); |
| 1084 | |
| 1085 | out: |
| 1086 | if (params.vlan) |
| 1087 | dev_put(params.vlan); |
| 1088 | cfg80211_put_dev(drv); |
| 1089 | dev_put(dev); |
| 1090 | return err; |
| 1091 | } |
| 1092 | |
| 1093 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) |
| 1094 | { |
| 1095 | struct cfg80211_registered_device *drv; |
| 1096 | int err; |
| 1097 | struct net_device *dev; |
| 1098 | u8 *mac_addr = NULL; |
| 1099 | |
| 1100 | if (info->attrs[NL80211_ATTR_MAC]) |
| 1101 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| 1102 | |
| 1103 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); |
| 1104 | if (err) |
| 1105 | return err; |
| 1106 | |
| 1107 | if (!drv->ops->del_station) { |
| 1108 | err = -EOPNOTSUPP; |
| 1109 | goto out; |
| 1110 | } |
| 1111 | |
| 1112 | rtnl_lock(); |
| 1113 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); |
| 1114 | rtnl_unlock(); |
| 1115 | |
| 1116 | out: |
| 1117 | cfg80211_put_dev(drv); |
| 1118 | dev_put(dev); |
| 1119 | return err; |
| 1120 | } |
| 1121 | |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1122 | static struct genl_ops nl80211_ops[] = { |
| 1123 | { |
| 1124 | .cmd = NL80211_CMD_GET_WIPHY, |
| 1125 | .doit = nl80211_get_wiphy, |
| 1126 | .dumpit = nl80211_dump_wiphy, |
| 1127 | .policy = nl80211_policy, |
| 1128 | /* can be retrieved by unprivileged users */ |
| 1129 | }, |
| 1130 | { |
| 1131 | .cmd = NL80211_CMD_SET_WIPHY, |
| 1132 | .doit = nl80211_set_wiphy, |
| 1133 | .policy = nl80211_policy, |
| 1134 | .flags = GENL_ADMIN_PERM, |
| 1135 | }, |
| 1136 | { |
| 1137 | .cmd = NL80211_CMD_GET_INTERFACE, |
| 1138 | .doit = nl80211_get_interface, |
| 1139 | .dumpit = nl80211_dump_interface, |
| 1140 | .policy = nl80211_policy, |
| 1141 | /* can be retrieved by unprivileged users */ |
| 1142 | }, |
| 1143 | { |
| 1144 | .cmd = NL80211_CMD_SET_INTERFACE, |
| 1145 | .doit = nl80211_set_interface, |
| 1146 | .policy = nl80211_policy, |
| 1147 | .flags = GENL_ADMIN_PERM, |
| 1148 | }, |
| 1149 | { |
| 1150 | .cmd = NL80211_CMD_NEW_INTERFACE, |
| 1151 | .doit = nl80211_new_interface, |
| 1152 | .policy = nl80211_policy, |
| 1153 | .flags = GENL_ADMIN_PERM, |
| 1154 | }, |
| 1155 | { |
| 1156 | .cmd = NL80211_CMD_DEL_INTERFACE, |
| 1157 | .doit = nl80211_del_interface, |
| 1158 | .policy = nl80211_policy, |
| 1159 | .flags = GENL_ADMIN_PERM, |
| 1160 | }, |
Johannes Berg | 41ade00 | 2007-12-19 02:03:29 +0100 | [diff] [blame] | 1161 | { |
| 1162 | .cmd = NL80211_CMD_GET_KEY, |
| 1163 | .doit = nl80211_get_key, |
| 1164 | .policy = nl80211_policy, |
| 1165 | .flags = GENL_ADMIN_PERM, |
| 1166 | }, |
| 1167 | { |
| 1168 | .cmd = NL80211_CMD_SET_KEY, |
| 1169 | .doit = nl80211_set_key, |
| 1170 | .policy = nl80211_policy, |
| 1171 | .flags = GENL_ADMIN_PERM, |
| 1172 | }, |
| 1173 | { |
| 1174 | .cmd = NL80211_CMD_NEW_KEY, |
| 1175 | .doit = nl80211_new_key, |
| 1176 | .policy = nl80211_policy, |
| 1177 | .flags = GENL_ADMIN_PERM, |
| 1178 | }, |
| 1179 | { |
| 1180 | .cmd = NL80211_CMD_DEL_KEY, |
| 1181 | .doit = nl80211_del_key, |
| 1182 | .policy = nl80211_policy, |
| 1183 | .flags = GENL_ADMIN_PERM, |
| 1184 | }, |
Johannes Berg | ed1b6cc | 2007-12-19 02:03:32 +0100 | [diff] [blame] | 1185 | { |
| 1186 | .cmd = NL80211_CMD_SET_BEACON, |
| 1187 | .policy = nl80211_policy, |
| 1188 | .flags = GENL_ADMIN_PERM, |
| 1189 | .doit = nl80211_addset_beacon, |
| 1190 | }, |
| 1191 | { |
| 1192 | .cmd = NL80211_CMD_NEW_BEACON, |
| 1193 | .policy = nl80211_policy, |
| 1194 | .flags = GENL_ADMIN_PERM, |
| 1195 | .doit = nl80211_addset_beacon, |
| 1196 | }, |
| 1197 | { |
| 1198 | .cmd = NL80211_CMD_DEL_BEACON, |
| 1199 | .policy = nl80211_policy, |
| 1200 | .flags = GENL_ADMIN_PERM, |
| 1201 | .doit = nl80211_del_beacon, |
| 1202 | }, |
Johannes Berg | 5727ef1 | 2007-12-19 02:03:34 +0100 | [diff] [blame] | 1203 | { |
| 1204 | .cmd = NL80211_CMD_GET_STATION, |
| 1205 | .doit = nl80211_get_station, |
| 1206 | /* TODO: implement dumpit */ |
| 1207 | .policy = nl80211_policy, |
| 1208 | .flags = GENL_ADMIN_PERM, |
| 1209 | }, |
| 1210 | { |
| 1211 | .cmd = NL80211_CMD_SET_STATION, |
| 1212 | .doit = nl80211_set_station, |
| 1213 | .policy = nl80211_policy, |
| 1214 | .flags = GENL_ADMIN_PERM, |
| 1215 | }, |
| 1216 | { |
| 1217 | .cmd = NL80211_CMD_NEW_STATION, |
| 1218 | .doit = nl80211_new_station, |
| 1219 | .policy = nl80211_policy, |
| 1220 | .flags = GENL_ADMIN_PERM, |
| 1221 | }, |
| 1222 | { |
| 1223 | .cmd = NL80211_CMD_DEL_STATION, |
| 1224 | .doit = nl80211_del_station, |
| 1225 | .policy = nl80211_policy, |
| 1226 | .flags = GENL_ADMIN_PERM, |
| 1227 | }, |
Johannes Berg | 5568296 | 2007-09-20 13:09:35 -0400 | [diff] [blame] | 1228 | }; |
| 1229 | |
| 1230 | /* multicast groups */ |
| 1231 | static struct genl_multicast_group nl80211_config_mcgrp = { |
| 1232 | .name = "config", |
| 1233 | }; |
| 1234 | |
| 1235 | /* notification functions */ |
| 1236 | |
| 1237 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) |
| 1238 | { |
| 1239 | struct sk_buff *msg; |
| 1240 | |
| 1241 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 1242 | if (!msg) |
| 1243 | return; |
| 1244 | |
| 1245 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { |
| 1246 | nlmsg_free(msg); |
| 1247 | return; |
| 1248 | } |
| 1249 | |
| 1250 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); |
| 1251 | } |
| 1252 | |
| 1253 | /* initialisation/exit functions */ |
| 1254 | |
| 1255 | int nl80211_init(void) |
| 1256 | { |
| 1257 | int err, i; |
| 1258 | |
| 1259 | err = genl_register_family(&nl80211_fam); |
| 1260 | if (err) |
| 1261 | return err; |
| 1262 | |
| 1263 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { |
| 1264 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); |
| 1265 | if (err) |
| 1266 | goto err_out; |
| 1267 | } |
| 1268 | |
| 1269 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); |
| 1270 | if (err) |
| 1271 | goto err_out; |
| 1272 | |
| 1273 | return 0; |
| 1274 | err_out: |
| 1275 | genl_unregister_family(&nl80211_fam); |
| 1276 | return err; |
| 1277 | } |
| 1278 | |
| 1279 | void nl80211_exit(void) |
| 1280 | { |
| 1281 | genl_unregister_family(&nl80211_fam); |
| 1282 | } |