include/net/cfg80211.h

   1 #ifndef __NET_CFG80211_H
   2 #define __NET_CFG80211_H
   3
   4 #include <linux/netlink.h>
   5 #include <linux/skbuff.h>
   6 #include <linux/nl80211.h>
   7 #include <net/genetlink.h>
   8 /* remove once we remove the wext stuff */
   9 #include <net/iw_handler.h>
  10
  11 /*
  12  * 802.11 configuration in-kernel interface
  13  *
  14  * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
  15  */
  16
  17 /**
  18  * struct vif_params - describes virtual interface parameters
  19  * @mesh_id: mesh ID to use
  20  * @mesh_id_len: length of the mesh ID
  21  */
  22 struct vif_params {
  23        u8 *mesh_id;
  24        int mesh_id_len;
  25 };
  26
  27 /* Radiotap header iteration
  28  *   implemented in net/wireless/radiotap.c
  29  *   docs in Documentation/networking/radiotap-headers.txt
  30  */
  31 /**
  32  * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
  33  * @rtheader: pointer to the radiotap header we are walking through
  34  * @max_length: length of radiotap header in cpu byte ordering
  35  * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg
  36  * @this_arg: pointer to current radiotap arg
  37  * @arg_index: internal next argument index
  38  * @arg: internal next argument pointer
  39  * @next_bitmap: internal pointer to next present u32
  40  * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
  41  */
  42
  43 struct ieee80211_radiotap_iterator {
  44         struct ieee80211_radiotap_header *rtheader;
  45         int max_length;
  46         int this_arg_index;
  47         u8 *this_arg;
  48
  49         int arg_index;
  50         u8 *arg;
  51         __le32 *next_bitmap;
  52         u32 bitmap_shifter;
  53 };
  54
  55 extern int ieee80211_radiotap_iterator_init(
  56    struct ieee80211_radiotap_iterator *iterator,
  57    struct ieee80211_radiotap_header *radiotap_header,
  58    int max_length);
  59
  60 extern int ieee80211_radiotap_iterator_next(
  61    struct ieee80211_radiotap_iterator *iterator);
  62
  63
  64  /**
  65  * struct key_params - key information
  66  *
  67  * Information about a key
  68  *
  69  * @key: key material
  70  * @key_len: length of key material
  71  * @cipher: cipher suite selector
  72  * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
  73  *      with the get_key() callback, must be in little endian,
  74  *      length given by @seq_len.
  75  */
  76 struct key_params {
  77         u8 *key;
  78         u8 *seq;
  79         int key_len;
  80         int seq_len;
  81         u32 cipher;
  82 };
  83
  84 /**
  85  * struct beacon_parameters - beacon parameters
  86  *
  87  * Used to configure the beacon for an interface.
  88  *
  89  * @head: head portion of beacon (before TIM IE)
  90  *     or %NULL if not changed
  91  * @tail: tail portion of beacon (after TIM IE)
  92  *     or %NULL if not changed
  93  * @interval: beacon interval or zero if not changed
  94  * @dtim_period: DTIM period or zero if not changed
  95  * @head_len: length of @head
  96  * @tail_len: length of @tail
  97  */
  98 struct beacon_parameters {
  99         u8 *head, *tail;
 100         int interval, dtim_period;
 101         int head_len, tail_len;
 102 };
 103
 104 /**
 105  * enum station_flags - station flags
 106  *
 107  * Station capability flags. Note that these must be the bits
 108  * according to the nl80211 flags.
 109  *
 110  * @STATION_FLAG_CHANGED: station flags were changed
 111  * @STATION_FLAG_AUTHORIZED: station is authorized to send frames (802.1X)
 112  * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
 113  *      with short preambles
 114  * @STATION_FLAG_WME: station is WME/QoS capable
 115  */
 116 enum station_flags {
 117         STATION_FLAG_CHANGED            = 1<<0,
 118         STATION_FLAG_AUTHORIZED         = 1<<NL80211_STA_FLAG_AUTHORIZED,
 119         STATION_FLAG_SHORT_PREAMBLE     = 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
 120         STATION_FLAG_WME                = 1<<NL80211_STA_FLAG_WME,
 121 };
 122
 123 /**
 124  * enum plink_action - actions to perform in mesh peers
 125  *
 126  * @PLINK_ACTION_INVALID: action 0 is reserved
 127  * @PLINK_ACTION_OPEN: start mesh peer link establishment
 128  * @PLINK_ACTION_BLOCL: block traffic from this mesh peer
 129  */
 130 enum plink_actions {
 131         PLINK_ACTION_INVALID,
 132         PLINK_ACTION_OPEN,
 133         PLINK_ACTION_BLOCK,
 134 };
 135
 136 /**
 137  * struct station_parameters - station parameters
 138  *
 139  * Used to change and create a new station.
 140  *
 141  * @vlan: vlan interface station should belong to
 142  * @supported_rates: supported rates in IEEE 802.11 format
 143  *      (or NULL for no change)
 144  * @supported_rates_len: number of supported rates
 145  * @station_flags: station flags (see &enum station_flags)
 146  * @listen_interval: listen interval or -1 for no change
 147  * @aid: AID or zero for no change
 148  */
 149 struct station_parameters {
 150         u8 *supported_rates;
 151         struct net_device *vlan;
 152         u32 station_flags;
 153         int listen_interval;
 154         u16 aid;
 155         u8 supported_rates_len;
 156         u8 plink_action;
 157         struct ieee80211_ht_cap *ht_capa;
 158 };
 159
 160 /**
 161  * enum station_info_flags - station information flags
 162  *
 163  * Used by the driver to indicate which info in &struct station_info
 164  * it has filled in during get_station() or dump_station().
 165  *
 166  * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 167  * @STATION_INFO_RX_BYTES: @rx_bytes filled
 168  * @STATION_INFO_TX_BYTES: @tx_bytes filled
 169  * @STATION_INFO_LLID: @llid filled
 170  * @STATION_INFO_PLID: @plid filled
 171  * @STATION_INFO_PLINK_STATE: @plink_state filled
 172  * @STATION_INFO_SIGNAL: @signal filled
 173  * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled
 174  *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
 175  */
 176 enum station_info_flags {
 177         STATION_INFO_INACTIVE_TIME      = 1<<0,
 178         STATION_INFO_RX_BYTES           = 1<<1,
 179         STATION_INFO_TX_BYTES           = 1<<2,
 180         STATION_INFO_LLID               = 1<<3,
 181         STATION_INFO_PLID               = 1<<4,
 182         STATION_INFO_PLINK_STATE        = 1<<5,
 183         STATION_INFO_SIGNAL             = 1<<6,
 184         STATION_INFO_TX_BITRATE         = 1<<7,
 185 };
 186
 187 /**
 188  * enum station_info_rate_flags - bitrate info flags
 189  *
 190  * Used by the driver to indicate the specific rate transmission
 191  * type for 802.11n transmissions.
 192  *
 193  * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled
 194  * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission
 195  * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
 196  */
 197 enum rate_info_flags {
 198         RATE_INFO_FLAGS_MCS             = 1<<0,
 199         RATE_INFO_FLAGS_40_MHZ_WIDTH    = 1<<1,
 200         RATE_INFO_FLAGS_SHORT_GI        = 1<<2,
 201 };
 202
 203 /**
 204  * struct rate_info - bitrate information
 205  *
 206  * Information about a receiving or transmitting bitrate
 207  *
 208  * @flags: bitflag of flags from &enum rate_info_flags
 209  * @mcs: mcs index if struct describes a 802.11n bitrate
 210  * @legacy: bitrate in 100kbit/s for 802.11abg
 211  */
 212 struct rate_info {
 213         u8 flags;
 214         u8 mcs;
 215         u16 legacy;
 216 };
 217
 218 /**
 219  * struct station_info - station information
 220  *
 221  * Station information filled by driver for get_station() and dump_station.
 222  *
 223  * @filled: bitflag of flags from &enum station_info_flags
 224  * @inactive_time: time since last station activity (tx/rx) in milliseconds
 225  * @rx_bytes: bytes received from this station
 226  * @tx_bytes: bytes transmitted to this station
 227  * @llid: mesh local link id
 228  * @plid: mesh peer link id
 229  * @plink_state: mesh peer link state
 230  * @signal: signal strength of last received packet in dBm
 231  * @txrate: current unicast bitrate to this station
 232  */
 233 struct station_info {
 234         u32 filled;
 235         u32 inactive_time;
 236         u32 rx_bytes;
 237         u32 tx_bytes;
 238         u16 llid;
 239         u16 plid;
 240         u8 plink_state;
 241         s8 signal;
 242         struct rate_info txrate;
 243 };
 244
 245 /**
 246  * enum monitor_flags - monitor flags
 247  *
 248  * Monitor interface configuration flags. Note that these must be the bits
 249  * according to the nl80211 flags.
 250  *
 251  * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
 252  * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
 253  * @MONITOR_FLAG_CONTROL: pass control frames
 254  * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
 255  * @MONITOR_FLAG_COOK_FRAMES: report frames after processing
 256  */
 257 enum monitor_flags {
 258         MONITOR_FLAG_FCSFAIL            = 1<<NL80211_MNTR_FLAG_FCSFAIL,
 259         MONITOR_FLAG_PLCPFAIL           = 1<<NL80211_MNTR_FLAG_PLCPFAIL,
 260         MONITOR_FLAG_CONTROL            = 1<<NL80211_MNTR_FLAG_CONTROL,
 261         MONITOR_FLAG_OTHER_BSS          = 1<<NL80211_MNTR_FLAG_OTHER_BSS,
 262         MONITOR_FLAG_COOK_FRAMES        = 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
 263 };
 264
 265 /**
 266  * enum mpath_info_flags -  mesh path information flags
 267  *
 268  * Used by the driver to indicate which info in &struct mpath_info it has filled
 269  * in during get_station() or dump_station().
 270  *
 271  * MPATH_INFO_FRAME_QLEN: @frame_qlen filled
 272  * MPATH_INFO_DSN: @dsn filled
 273  * MPATH_INFO_METRIC: @metric filled
 274  * MPATH_INFO_EXPTIME: @exptime filled
 275  * MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
 276  * MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
 277  * MPATH_INFO_FLAGS: @flags filled
 278  */
 279 enum mpath_info_flags {
 280         MPATH_INFO_FRAME_QLEN           = BIT(0),
 281         MPATH_INFO_DSN                  = BIT(1),
 282         MPATH_INFO_METRIC               = BIT(2),
 283         MPATH_INFO_EXPTIME              = BIT(3),
 284         MPATH_INFO_DISCOVERY_TIMEOUT    = BIT(4),
 285         MPATH_INFO_DISCOVERY_RETRIES    = BIT(5),
 286         MPATH_INFO_FLAGS                = BIT(6),
 287 };
 288
 289 /**
 290  * struct mpath_info - mesh path information
 291  *
 292  * Mesh path information filled by driver for get_mpath() and dump_mpath().
 293  *
 294  * @filled: bitfield of flags from &enum mpath_info_flags
 295  * @frame_qlen: number of queued frames for this destination
 296  * @dsn: destination sequence number
 297  * @metric: metric (cost) of this mesh path
 298  * @exptime: expiration time for the mesh path from now, in msecs
 299  * @flags: mesh path flags
 300  * @discovery_timeout: total mesh path discovery timeout, in msecs
 301  * @discovery_retries: mesh path discovery retries
 302  */
 303 struct mpath_info {
 304         u32 filled;
 305         u32 frame_qlen;
 306         u32 dsn;
 307         u32 metric;
 308         u32 exptime;
 309         u32 discovery_timeout;
 310         u8 discovery_retries;
 311         u8 flags;
 312 };
 313
 314 /**
 315  * struct bss_parameters - BSS parameters
 316  *
 317  * Used to change BSS parameters (mainly for AP mode).
 318  *
 319  * @use_cts_prot: Whether to use CTS protection
 320  *      (0 = no, 1 = yes, -1 = do not change)
 321  * @use_short_preamble: Whether the use of short preambles is allowed
 322  *      (0 = no, 1 = yes, -1 = do not change)
 323  * @use_short_slot_time: Whether the use of short slot time is allowed
 324  *      (0 = no, 1 = yes, -1 = do not change)
 325  * @basic_rates: basic rates in IEEE 802.11 format
 326  *      (or NULL for no change)
 327  * @basic_rates_len: number of basic rates
 328  */
 329 struct bss_parameters {
 330         int use_cts_prot;
 331         int use_short_preamble;
 332         int use_short_slot_time;
 333         u8 *basic_rates;
 334         u8 basic_rates_len;
 335 };
 336
 337 /**
 338  * enum reg_set_by - Indicates who is trying to set the regulatory domain
 339  * @REGDOM_SET_BY_INIT: regulatory domain was set by initialization. We will be
 340  *      using a static world regulatory domain by default.
 341  * @REGDOM_SET_BY_CORE: Core queried CRDA for a dynamic world regulatory domain.
 342  * @REGDOM_SET_BY_USER: User asked the wireless core to set the
 343  *      regulatory domain.
 344  * @REGDOM_SET_BY_DRIVER: a wireless drivers has hinted to the wireless core
 345  *      it thinks its knows the regulatory domain we should be in.
 346  * @REGDOM_SET_BY_COUNTRY_IE: the wireless core has received an 802.11 country
 347  *      information element with regulatory information it thinks we
 348  *      should consider.
 349  */
 350 enum reg_set_by {
 351         REGDOM_SET_BY_INIT,
 352         REGDOM_SET_BY_CORE,
 353         REGDOM_SET_BY_USER,
 354         REGDOM_SET_BY_DRIVER,
 355         REGDOM_SET_BY_COUNTRY_IE,
 356 };
 357
 358 struct ieee80211_freq_range {
 359         u32 start_freq_khz;
 360         u32 end_freq_khz;
 361         u32 max_bandwidth_khz;
 362 };
 363
 364 struct ieee80211_power_rule {
 365         u32 max_antenna_gain;
 366         u32 max_eirp;
 367 };
 368
 369 struct ieee80211_reg_rule {
 370         struct ieee80211_freq_range freq_range;
 371         struct ieee80211_power_rule power_rule;
 372         u32 flags;
 373 };
 374
 375 struct ieee80211_regdomain {
 376         u32 n_reg_rules;
 377         char alpha2[2];
 378         struct ieee80211_reg_rule reg_rules[];
 379 };
 380
 381 #define MHZ_TO_KHZ(freq) ((freq) * 1000)
 382 #define KHZ_TO_MHZ(freq) ((freq) / 1000)
 383 #define DBI_TO_MBI(gain) ((gain) * 100)
 384 #define MBI_TO_DBI(gain) ((gain) / 100)
 385 #define DBM_TO_MBM(gain) ((gain) * 100)
 386 #define MBM_TO_DBM(gain) ((gain) / 100)
 387
 388 #define REG_RULE(start, end, bw, gain, eirp, reg_flags) { \
 389         .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
 390         .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \
 391         .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
 392         .power_rule.max_antenna_gain = DBI_TO_MBI(gain), \
 393         .power_rule.max_eirp = DBM_TO_MBM(eirp), \
 394         .flags = reg_flags, \
 395         }
 396
 397 struct mesh_config {
 398         /* Timeouts in ms */
 399         /* Mesh plink management parameters */
 400         u16 dot11MeshRetryTimeout;
 401         u16 dot11MeshConfirmTimeout;
 402         u16 dot11MeshHoldingTimeout;
 403         u16 dot11MeshMaxPeerLinks;
 404         u8  dot11MeshMaxRetries;
 405         u8  dot11MeshTTL;
 406         bool auto_open_plinks;
 407         /* HWMP parameters */
 408         u8  dot11MeshHWMPmaxPREQretries;
 409         u32 path_refresh_time;
 410         u16 min_discovery_timeout;
 411         u32 dot11MeshHWMPactivePathTimeout;
 412         u16 dot11MeshHWMPpreqMinInterval;
 413         u16 dot11MeshHWMPnetDiameterTraversalTime;
 414 };
 415
 416 /**
 417  * struct ieee80211_txq_params - TX queue parameters
 418  * @queue: TX queue identifier (NL80211_TXQ_Q_*)
 419  * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled
 420  * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range
 421  *      1..32767]
 422  * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range
 423  *      1..32767]
 424  * @aifs: Arbitration interframe space [0..255]
 425  */
 426 struct ieee80211_txq_params {
 427         enum nl80211_txq_q queue;
 428         u16 txop;
 429         u16 cwmin;
 430         u16 cwmax;
 431         u8 aifs;
 432 };
 433
 434 /* from net/wireless.h */
 435 struct wiphy;
 436
 437 /* from net/ieee80211.h */
 438 struct ieee80211_channel;
 439
 440 /**
 441  * struct cfg80211_ops - backend description for wireless configuration
 442  *
 443  * This struct is registered by fullmac card drivers and/or wireless stacks
 444  * in order to handle configuration requests on their interfaces.
 445  *
 446  * All callbacks except where otherwise noted should return 0
 447  * on success or a negative error code.
 448  *
 449  * All operations are currently invoked under rtnl for consistency with the
 450  * wireless extensions but this is subject to reevaluation as soon as this
 451  * code is used more widely and we have a first user without wext.
 452  *
 453  * @add_virtual_intf: create a new virtual interface with the given name,
 454  *      must set the struct wireless_dev's iftype.
 455  *
 456  * @del_virtual_intf: remove the virtual interface determined by ifindex.
 457  *
 458  * @change_virtual_intf: change type/configuration of virtual interface,
 459  *      keep the struct wireless_dev's iftype updated.
 460  *
 461  * @add_key: add a key with the given parameters. @mac_addr will be %NULL
 462  *      when adding a group key.
 463  *
 464  * @get_key: get information about the key with the given parameters.
 465  *      @mac_addr will be %NULL when requesting information for a group
 466  *      key. All pointers given to the @callback function need not be valid
 467  *      after it returns.
 468  *
 469  * @del_key: remove a key given the @mac_addr (%NULL for a group key)
 470  *      and @key_index
 471  *
 472  * @set_default_key: set the default key on an interface
 473  *
 474  * @add_beacon: Add a beacon with given parameters, @head, @interval
 475  *      and @dtim_period will be valid, @tail is optional.
 476  * @set_beacon: Change the beacon parameters for an access point mode
 477  *      interface. This should reject the call when no beacon has been
 478  *      configured.
 479  * @del_beacon: Remove beacon configuration and stop sending the beacon.
 480  *
 481  * @add_station: Add a new station.
 482  *
 483  * @del_station: Remove a station; @mac may be NULL to remove all stations.
 484  *
 485  * @change_station: Modify a given station.
 486  *
 487  * @get_mesh_params: Put the current mesh parameters into *params
 488  *
 489  * @set_mesh_params: Set mesh parameters.
 490  *      The mask is a bitfield which tells us which parameters to
 491  *      set, and which to leave alone.
 492  *
 493  * @set_mesh_cfg: set mesh parameters (by now, just mesh id)
 494  *
 495  * @change_bss: Modify parameters for a given BSS.
 496  *
 497  * @set_txq_params: Set TX queue parameters
 498  *
 499  * @set_channel: Set channel
 500  */
 501 struct cfg80211_ops {
 502         int     (*add_virtual_intf)(struct wiphy *wiphy, char *name,
 503                                     enum nl80211_iftype type, u32 *flags,
 504                                     struct vif_params *params);
 505         int     (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
 506         int     (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
 507                                        enum nl80211_iftype type, u32 *flags,
 508                                        struct vif_params *params);
 509
 510         int     (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
 511                            u8 key_index, u8 *mac_addr,
 512                            struct key_params *params);
 513         int     (*get_key)(struct wiphy *wiphy, struct net_device *netdev,
 514                            u8 key_index, u8 *mac_addr, void *cookie,
 515                            void (*callback)(void *cookie, struct key_params*));
 516         int     (*del_key)(struct wiphy *wiphy, struct net_device *netdev,
 517                            u8 key_index, u8 *mac_addr);
 518         int     (*set_default_key)(struct wiphy *wiphy,
 519                                    struct net_device *netdev,
 520                                    u8 key_index);
 521
 522         int     (*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
 523                               struct beacon_parameters *info);
 524         int     (*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
 525                               struct beacon_parameters *info);
 526         int     (*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
 527
 528
 529         int     (*add_station)(struct wiphy *wiphy, struct net_device *dev,
 530                                u8 *mac, struct station_parameters *params);
 531         int     (*del_station)(struct wiphy *wiphy, struct net_device *dev,
 532                                u8 *mac);
 533         int     (*change_station)(struct wiphy *wiphy, struct net_device *dev,
 534                                   u8 *mac, struct station_parameters *params);
 535         int     (*get_station)(struct wiphy *wiphy, struct net_device *dev,
 536                                u8 *mac, struct station_info *sinfo);
 537         int     (*dump_station)(struct wiphy *wiphy, struct net_device *dev,
 538                                int idx, u8 *mac, struct station_info *sinfo);
 539
 540         int     (*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
 541                                u8 *dst, u8 *next_hop);
 542         int     (*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
 543                                u8 *dst);
 544         int     (*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
 545                                   u8 *dst, u8 *next_hop);
 546         int     (*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
 547                                u8 *dst, u8 *next_hop,
 548                                struct mpath_info *pinfo);
 549         int     (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
 550                                int idx, u8 *dst, u8 *next_hop,
 551                                struct mpath_info *pinfo);
 552         int     (*get_mesh_params)(struct wiphy *wiphy,
 553                                 struct net_device *dev,
 554                                 struct mesh_config *conf);
 555         int     (*set_mesh_params)(struct wiphy *wiphy,
 556                                 struct net_device *dev,
 557                                 const struct mesh_config *nconf, u32 mask);
 558         int     (*change_bss)(struct wiphy *wiphy, struct net_device *dev,
 559                               struct bss_parameters *params);
 560
 561         int     (*set_txq_params)(struct wiphy *wiphy,
 562                                   struct ieee80211_txq_params *params);
 563
 564         int     (*set_channel)(struct wiphy *wiphy,
 565                                struct ieee80211_channel *chan,
 566                                enum nl80211_channel_type channel_type);
 567 };
 568
 569 /* temporary wext handlers */
 570 int cfg80211_wext_giwname(struct net_device *dev,
 571                           struct iw_request_info *info,
 572                           char *name, char *extra);
 573 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 574                           u32 *mode, char *extra);
 575 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 576                           u32 *mode, char *extra);
 577
 578 #endif /* __NET_CFG80211_H */