contrib/wpa_supplicant/wpa_supplicant_i.h

   1 /*
   2  * wpa_supplicant - Internal definitions
   3  * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #ifndef WPA_SUPPLICANT_I_H
  16 #define WPA_SUPPLICANT_I_H
  17
  18 #include "driver.h"
  19
  20 struct wpa_blacklist {
  21         struct wpa_blacklist *next;
  22         u8 bssid[ETH_ALEN];
  23         int count;
  24 };
  25
  26
  27 struct wpa_scan_result;
  28 struct wpa_sm;
  29 struct wpa_supplicant;
  30
  31 /*
  32  * Forward declarations of private structures used within the ctrl_iface
  33  * backends. Other parts of wpa_supplicant do not have access to data stored in
  34  * these structures.
  35  */
  36 struct ctrl_iface_priv;
  37 struct ctrl_iface_global_priv;
  38 struct ctrl_iface_dbus_priv;
  39
  40 /**
  41  * struct wpa_interface - Parameters for wpa_supplicant_add_iface()
  42  */
  43 struct wpa_interface {
  44         /**
  45          * confname - Configuration name (file or profile) name
  46          *
  47          * This can also be %NULL when a configuration file is not used. In
  48          * that case, ctrl_interface must be set to allow the interface to be
  49          * configured.
  50          */
  51         const char *confname;
  52
  53         /**
  54          * ctrl_interface - Control interface parameter
  55          *
  56          * If a configuration file is not used, this variable can be used to
  57          * set the ctrl_interface parameter that would have otherwise been read
  58          * from the configuration file. If both confname and ctrl_interface are
  59          * set, ctrl_interface is used to override the value from configuration
  60          * file.
  61          */
  62         const char *ctrl_interface;
  63
  64         /**
  65          * driver - Driver interface name, or %NULL to use the default driver
  66          */
  67         const char *driver;
  68
  69         /**
  70          * driver_param - Driver interface parameters
  71          *
  72          * If a configuration file is not used, this variable can be used to
  73          * set the driver_param parameters that would have otherwise been read
  74          * from the configuration file. If both confname and driver_param are
  75          * set, driver_param is used to override the value from configuration
  76          * file.
  77          */
  78         const char *driver_param;
  79
  80         /**
  81          * ifname - Interface name
  82          */
  83         const char *ifname;
  84
  85         /**
  86          * bridge_ifname - Optional bridge interface name
  87          *
  88          * If the driver interface (ifname) is included in a Linux bridge
  89          * device, the bridge interface may need to be used for receiving EAPOL
  90          * frames. This can be enabled by setting this variable to enable
  91          * receiving of EAPOL frames from an additional interface.
  92          */
  93         const char *bridge_ifname;
  94 };
  95
  96 /**
  97  * struct wpa_params - Parameters for wpa_supplicant_init()
  98  */
  99 struct wpa_params {
 100         /**
 101          * daemonize - Run %wpa_supplicant in the background
 102          */
 103         int daemonize;
 104
 105         /**
 106          * wait_for_interface - Wait for the network interface to appear
 107          *
 108          * If set, %wpa_supplicant will wait until all the configured network
 109          * interfaces are available before starting processing. Please note
 110          * that in many cases, a better alternative would be to start
 111          * %wpa_supplicant without network interfaces and add the interfaces
 112          * dynamically whenever they become available.
 113          */
 114         int wait_for_interface;
 115
 116         /**
 117          * wait_for_monitor - Wait for a monitor program before starting
 118          */
 119         int wait_for_monitor;
 120
 121         /**
 122          * pid_file - Path to a PID (process ID) file
 123          *
 124          * If this and daemonize are set, process ID of the background process
 125          * will be written to the specified file.
 126          */
 127         char *pid_file;
 128
 129         /**
 130          * wpa_debug_level - Debugging verbosity level (e.g., MSG_INFO)
 131          */
 132         int wpa_debug_level;
 133
 134         /**
 135          * wpa_debug_show_keys - Whether keying material is included in debug
 136          *
 137          * This parameter can be used to allow keying material to be included
 138          * in debug messages. This is a security risk and this option should
 139          * not be enabled in normal configuration. If needed during
 140          * development or while troubleshooting, this option can provide more
 141          * details for figuring out what is happening.
 142          */
 143         int wpa_debug_show_keys;
 144
 145         /**
 146          * wpa_debug_timestamp - Whether to include timestamp in debug messages
 147          */
 148         int wpa_debug_timestamp;
 149
 150         /**
 151          * ctrl_interface - Global ctrl_iface path/parameter
 152          */
 153         char *ctrl_interface;
 154
 155         /**
 156          * dbus_ctrl_interface - Enable the DBus control interface
 157          */
 158         int dbus_ctrl_interface;
 159
 160         /**
 161          * wpa_debug_file_path - Path of debug file or %NULL to use stdout
 162          */
 163         const char *wpa_debug_file_path;
 164
 165         /**
 166          * wpa_debug_syslog - Enable log output through syslog
 167          */
 168         const char *wpa_debug_syslog;
 169 };
 170
 171 /**
 172  * struct wpa_global - Internal, global data for all %wpa_supplicant interfaces
 173  *
 174  * This structure is initialized by calling wpa_supplicant_init() when starting
 175  * %wpa_supplicant.
 176  */
 177 struct wpa_global {
 178         struct wpa_supplicant *ifaces;
 179         struct wpa_params params;
 180         struct ctrl_iface_global_priv *ctrl_iface;
 181         struct ctrl_iface_dbus_priv *dbus_ctrl_iface;
 182 };
 183
 184
 185 struct wpa_client_mlme {
 186 #ifdef CONFIG_CLIENT_MLME
 187         enum {
 188                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 189                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 190                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 191         } state;
 192         u8 prev_bssid[ETH_ALEN];
 193         u8 ssid[32];
 194         size_t ssid_len;
 195         u16 aid;
 196         u16 ap_capab, capab;
 197         u8 *extra_ie; /* to be added to the end of AssocReq */
 198         size_t extra_ie_len;
 199         wpa_key_mgmt key_mgmt;
 200
 201         /* The last AssocReq/Resp IEs */
 202         u8 *assocreq_ies, *assocresp_ies;
 203         size_t assocreq_ies_len, assocresp_ies_len;
 204
 205         int auth_tries, assoc_tries;
 206
 207         unsigned int ssid_set:1;
 208         unsigned int bssid_set:1;
 209         unsigned int prev_bssid_set:1;
 210         unsigned int authenticated:1;
 211         unsigned int associated:1;
 212         unsigned int probereq_poll:1;
 213         unsigned int use_protection:1;
 214         unsigned int create_ibss:1;
 215         unsigned int mixed_cell:1;
 216         unsigned int wmm_enabled:1;
 217
 218         struct os_time last_probe;
 219
 220 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
 221 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
 222 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
 223         unsigned int auth_algs; /* bitfield of allowed auth algs */
 224         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 225         int auth_transaction;
 226
 227         struct os_time ibss_join_req;
 228         u8 *probe_resp; /* ProbeResp template for IBSS */
 229         size_t probe_resp_len;
 230         u32 supp_rates_bits;
 231
 232         int wmm_last_param_set;
 233
 234         int sta_scanning;
 235         int scan_hw_mode_idx;
 236         int scan_channel_idx;
 237         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 238         struct os_time last_scan_completed;
 239         int scan_oper_channel;
 240         int scan_oper_freq;
 241         int scan_oper_phymode;
 242         u8 scan_ssid[32];
 243         size_t scan_ssid_len;
 244         int scan_skip_11b;
 245
 246         struct ieee80211_sta_bss *sta_bss_list;
 247 #define STA_HASH_SIZE 256
 248 #define STA_HASH(sta) (sta[5])
 249         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 250
 251         int cts_protect_erp_frames;
 252
 253         int phymode; /* current mode; WPA_MODE_IEEE80211A, .. */
 254         struct wpa_hw_modes *modes;
 255         size_t num_modes;
 256         unsigned int hw_modes; /* bitfield of allowed hardware modes;
 257                                 * (1 << MODE_*) */
 258         int num_curr_rates;
 259         struct wpa_rate_data *curr_rates;
 260         int freq; /* The current frequency in MHz */
 261         int channel; /* The current IEEE 802.11 channel number */
 262 #else /* CONFIG_CLIENT_MLME */
 263         int dummy; /* to keep MSVC happy */
 264 #endif /* CONFIG_CLIENT_MLME */
 265 };
 266
 267 /**
 268  * struct wpa_supplicant - Internal data for wpa_supplicant interface
 269  *
 270  * This structure contains the internal data for core wpa_supplicant code. This
 271  * should be only used directly from the core code. However, a pointer to this
 272  * data is used from other files as an arbitrary context pointer in calls to
 273  * core functions.
 274  */
 275 struct wpa_supplicant {
 276         struct wpa_global *global;
 277         struct wpa_supplicant *next;
 278         struct l2_packet_data *l2;
 279         struct l2_packet_data *l2_br;
 280         unsigned char own_addr[ETH_ALEN];
 281         char ifname[100];
 282 #ifdef CONFIG_CTRL_IFACE_DBUS
 283         char *dbus_path;
 284 #endif /* CONFIG_CTRL_IFACE_DBUS */
 285         char bridge_ifname[16];
 286
 287         char *confname;
 288         struct wpa_config *conf;
 289         int countermeasures;
 290         os_time_t last_michael_mic_error;
 291         u8 bssid[ETH_ALEN];
 292         u8 pending_bssid[ETH_ALEN]; /* If wpa_state == WPA_ASSOCIATING, this
 293                                      * field contains the targer BSSID. */
 294         int reassociate; /* reassociation requested */
 295         int disconnected; /* all connections disabled; i.e., do no reassociate
 296                            * before this has been cleared */
 297         struct wpa_ssid *current_ssid;
 298
 299         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
 300         int pairwise_cipher;
 301         int group_cipher;
 302         int key_mgmt;
 303         int mgmt_group_cipher;
 304
 305         void *drv_priv; /* private data used by driver_ops */
 306
 307         struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
 308                                           * NULL = not yet initialized (start
 309                                           * with broadcast SSID)
 310                                           * BROADCAST_SSID_SCAN = broadcast
 311                                           * SSID was used in the previous scan
 312                                           */
 313 #define BROADCAST_SSID_SCAN ((struct wpa_ssid *) 1)
 314
 315         struct wpa_scan_result *scan_results;
 316         int num_scan_results;
 317
 318         struct wpa_driver_ops *driver;
 319         int interface_removed; /* whether the network interface has been
 320                                 * removed */
 321         struct wpa_sm *wpa;
 322         struct eapol_sm *eapol;
 323
 324         struct ctrl_iface_priv *ctrl_iface;
 325
 326         wpa_states wpa_state;
 327         int new_connection;
 328         int reassociated_connection;
 329
 330         int eapol_received; /* number of EAPOL packets received after the
 331                              * previous association event */
 332
 333         struct scard_data *scard;
 334
 335         unsigned char last_eapol_src[ETH_ALEN];
 336
 337         int keys_cleared;
 338
 339         struct wpa_blacklist *blacklist;
 340
 341         int scan_req; /* manual scan request; this forces a scan even if there
 342                        * are no enabled networks in the configuration */
 343         int scan_res_tried; /* whether ap_scan=1 mode has tried to fetch scan
 344                              * results without a new scan request; this is used
 345                              * to speed up the first association if the driver
 346                              * has already available scan results. */
 347
 348         struct wpa_client_mlme mlme;
 349         int use_client_mlme;
 350 };
 351
 352
 353 /* wpa_supplicant.c */
 354 void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s);
 355
 356 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s);
 357
 358 const char * wpa_supplicant_state_txt(int state);
 359 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s,
 360                                int wait_for_interface);
 361 struct wpa_blacklist * wpa_blacklist_get(struct wpa_supplicant *wpa_s,
 362                                          const u8 *bssid);
 363 int wpa_blacklist_add(struct wpa_supplicant *wpa_s, const u8 *bssid);
 364 void wpa_blacklist_clear(struct wpa_supplicant *wpa_s);
 365 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 366                               struct wpa_scan_result *bss,
 367                               struct wpa_ssid *ssid,
 368                               u8 *wpa_ie, size_t *wpa_ie_len);
 369 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 370                               struct wpa_scan_result *bss,
 371                               struct wpa_ssid *ssid);
 372 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 373                                        struct wpa_ssid *ssid);
 374 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s);
 375 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s);
 376 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr);
 377 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 378                                      int sec, int usec);
 379 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state);
 380 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s);
 381 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s);
 382 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
 383                                    int reason_code);
 384 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
 385                                  int reason_code);
 386 void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec);
 387
 388 void wpa_show_license(void);
 389
 390 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
 391                                                  struct wpa_interface *iface);
 392 int wpa_supplicant_remove_iface(struct wpa_global *global,
 393                                 struct wpa_supplicant *wpa_s);
 394 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
 395                                                  const char *ifname);
 396 struct wpa_global * wpa_supplicant_init(struct wpa_params *params);
 397 int wpa_supplicant_run(struct wpa_global *global);
 398 void wpa_supplicant_deinit(struct wpa_global *global);
 399
 400 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 401                               struct wpa_ssid *ssid);
 402
 403 /* events.c */
 404 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s);
 405
 406 /* driver_ops */
 407 static inline void * wpa_drv_init(struct wpa_supplicant *wpa_s,
 408                                   const char *ifname)
 409 {
 410         if (wpa_s->driver->init) {
 411                 return wpa_s->driver->init(wpa_s, ifname);
 412         }
 413         return NULL;
 414 }
 415
 416 static inline void wpa_drv_deinit(struct wpa_supplicant *wpa_s)
 417 {
 418         if (wpa_s->driver->deinit)
 419                 wpa_s->driver->deinit(wpa_s->drv_priv);
 420 }
 421
 422 static inline int wpa_drv_set_param(struct wpa_supplicant *wpa_s,
 423                                     const char *param)
 424 {
 425         if (wpa_s->driver->set_param)
 426                 return wpa_s->driver->set_param(wpa_s->drv_priv, param);
 427         return 0;
 428 }
 429
 430 static inline int wpa_drv_set_drop_unencrypted(struct wpa_supplicant *wpa_s,
 431                                                int enabled)
 432 {
 433         if (wpa_s->driver->set_drop_unencrypted) {
 434                 return wpa_s->driver->set_drop_unencrypted(wpa_s->drv_priv,
 435                                                            enabled);
 436         }
 437         return -1;
 438 }
 439
 440 static inline int wpa_drv_set_countermeasures(struct wpa_supplicant *wpa_s,
 441                                               int enabled)
 442 {
 443         if (wpa_s->driver->set_countermeasures) {
 444                 return wpa_s->driver->set_countermeasures(wpa_s->drv_priv,
 445                                                           enabled);
 446         }
 447         return -1;
 448 }
 449
 450 static inline int wpa_drv_set_auth_alg(struct wpa_supplicant *wpa_s,
 451                                        int auth_alg)
 452 {
 453         if (wpa_s->driver->set_auth_alg) {
 454                 return wpa_s->driver->set_auth_alg(wpa_s->drv_priv,
 455                                                    auth_alg);
 456         }
 457         return -1;
 458 }
 459
 460 static inline int wpa_drv_set_wpa(struct wpa_supplicant *wpa_s, int enabled)
 461 {
 462         if (wpa_s->driver->set_wpa) {
 463                 return wpa_s->driver->set_wpa(wpa_s->drv_priv, enabled);
 464         }
 465         return 0;
 466 }
 467
 468 static inline int wpa_drv_associate(struct wpa_supplicant *wpa_s,
 469                                     struct wpa_driver_associate_params *params)
 470 {
 471         if (wpa_s->driver->associate) {
 472                 return wpa_s->driver->associate(wpa_s->drv_priv, params);
 473         }
 474         return -1;
 475 }
 476
 477 static inline int wpa_drv_scan(struct wpa_supplicant *wpa_s, const u8 *ssid,
 478                                size_t ssid_len)
 479 {
 480         if (wpa_s->driver->scan) {
 481                 return wpa_s->driver->scan(wpa_s->drv_priv, ssid, ssid_len);
 482         }
 483         return -1;
 484 }
 485
 486 static inline int wpa_drv_get_scan_results(struct wpa_supplicant *wpa_s,
 487                                            struct wpa_scan_result *results,
 488                                            size_t max_size)
 489 {
 490         if (wpa_s->driver->get_scan_results) {
 491                 return wpa_s->driver->get_scan_results(wpa_s->drv_priv,
 492                                                        results, max_size);
 493         }
 494         return -1;
 495 }
 496
 497 static inline int wpa_drv_get_bssid(struct wpa_supplicant *wpa_s, u8 *bssid)
 498 {
 499         if (wpa_s->driver->get_bssid) {
 500                 return wpa_s->driver->get_bssid(wpa_s->drv_priv, bssid);
 501         }
 502         return -1;
 503 }
 504
 505 static inline int wpa_drv_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid)
 506 {
 507         if (wpa_s->driver->get_ssid) {
 508                 return wpa_s->driver->get_ssid(wpa_s->drv_priv, ssid);
 509         }
 510         return -1;
 511 }
 512
 513 static inline int wpa_drv_set_key(struct wpa_supplicant *wpa_s, wpa_alg alg,
 514                                    const u8 *addr, int key_idx, int set_tx,
 515                                    const u8 *seq, size_t seq_len,
 516                                    const u8 *key, size_t key_len)
 517 {
 518         if (wpa_s->driver->set_key) {
 519                 wpa_s->keys_cleared = 0;
 520                 return wpa_s->driver->set_key(wpa_s->drv_priv, alg, addr,
 521                                               key_idx, set_tx, seq, seq_len,
 522                                               key, key_len);
 523         }
 524         return -1;
 525 }
 526
 527 static inline int wpa_drv_deauthenticate(struct wpa_supplicant *wpa_s,
 528                                          const u8 *addr, int reason_code)
 529 {
 530         if (wpa_s->driver->deauthenticate) {
 531                 return wpa_s->driver->deauthenticate(wpa_s->drv_priv, addr,
 532                                                      reason_code);
 533         }
 534         return -1;
 535 }
 536
 537 static inline int wpa_drv_disassociate(struct wpa_supplicant *wpa_s,
 538                                        const u8 *addr, int reason_code)
 539 {
 540         if (wpa_s->driver->disassociate) {
 541                 return wpa_s->driver->disassociate(wpa_s->drv_priv, addr,
 542                                                    reason_code);
 543         }
 544         return -1;
 545 }
 546
 547 static inline int wpa_drv_add_pmkid(struct wpa_supplicant *wpa_s,
 548                                     const u8 *bssid, const u8 *pmkid)
 549 {
 550         if (wpa_s->driver->add_pmkid) {
 551                 return wpa_s->driver->add_pmkid(wpa_s->drv_priv, bssid, pmkid);
 552         }
 553         return -1;
 554 }
 555
 556 static inline int wpa_drv_remove_pmkid(struct wpa_supplicant *wpa_s,
 557                                        const u8 *bssid, const u8 *pmkid)
 558 {
 559         if (wpa_s->driver->remove_pmkid) {
 560                 return wpa_s->driver->remove_pmkid(wpa_s->drv_priv, bssid,
 561                                                    pmkid);
 562         }
 563         return -1;
 564 }
 565
 566 static inline int wpa_drv_flush_pmkid(struct wpa_supplicant *wpa_s)
 567 {
 568         if (wpa_s->driver->flush_pmkid) {
 569                 return wpa_s->driver->flush_pmkid(wpa_s->drv_priv);
 570         }
 571         return -1;
 572 }
 573
 574 static inline int wpa_drv_get_capa(struct wpa_supplicant *wpa_s,
 575                                    struct wpa_driver_capa *capa)
 576 {
 577         if (wpa_s->driver->get_capa) {
 578                 return wpa_s->driver->get_capa(wpa_s->drv_priv, capa);
 579         }
 580         return -1;
 581 }
 582
 583 static inline void wpa_drv_poll(struct wpa_supplicant *wpa_s)
 584 {
 585         if (wpa_s->driver->poll) {
 586                 wpa_s->driver->poll(wpa_s->drv_priv);
 587         }
 588 }
 589
 590 static inline const char * wpa_drv_get_ifname(struct wpa_supplicant *wpa_s)
 591 {
 592         if (wpa_s->driver->get_ifname) {
 593                 return wpa_s->driver->get_ifname(wpa_s->drv_priv);
 594         }
 595         return NULL;
 596 }
 597
 598 static inline const u8 * wpa_drv_get_mac_addr(struct wpa_supplicant *wpa_s)
 599 {
 600         if (wpa_s->driver->get_mac_addr) {
 601                 return wpa_s->driver->get_mac_addr(wpa_s->drv_priv);
 602         }
 603         return NULL;
 604 }
 605
 606 static inline int wpa_drv_send_eapol(struct wpa_supplicant *wpa_s,
 607                                      const u8 *dst, u16 proto,
 608                                      const u8 *data, size_t data_len)
 609 {
 610         if (wpa_s->driver->send_eapol)
 611                 return wpa_s->driver->send_eapol(wpa_s->drv_priv, dst, proto,
 612                                                  data, data_len);
 613         return -1;
 614 }
 615
 616 static inline int wpa_drv_set_operstate(struct wpa_supplicant *wpa_s,
 617                                         int state)
 618 {
 619         if (wpa_s->driver->set_operstate)
 620                 return wpa_s->driver->set_operstate(wpa_s->drv_priv, state);
 621         return 0;
 622 }
 623
 624 static inline int wpa_drv_mlme_setprotection(struct wpa_supplicant *wpa_s,
 625                                              const u8 *addr, int protect_type,
 626                                              int key_type)
 627 {
 628         if (wpa_s->driver->mlme_setprotection)
 629                 return wpa_s->driver->mlme_setprotection(wpa_s->drv_priv, addr,
 630                                                          protect_type,
 631                                                          key_type);
 632         return 0;
 633 }
 634
 635 static inline struct wpa_hw_modes *
 636 wpa_drv_get_hw_feature_data(struct wpa_supplicant *wpa_s, u16 *num_modes,
 637                             u16 *flags)
 638 {
 639         if (wpa_s->driver->get_hw_feature_data)
 640                 return wpa_s->driver->get_hw_feature_data(wpa_s->drv_priv,
 641                                                           num_modes, flags);
 642         return NULL;
 643 }
 644
 645 static inline int wpa_drv_set_channel(struct wpa_supplicant *wpa_s,
 646                                       wpa_hw_mode phymode, int chan,
 647                                       int freq)
 648 {
 649         if (wpa_s->driver->set_channel)
 650                 return wpa_s->driver->set_channel(wpa_s->drv_priv, phymode,
 651                                                   chan, freq);
 652         return -1;
 653 }
 654
 655 static inline int wpa_drv_set_ssid(struct wpa_supplicant *wpa_s,
 656                                    const u8 *ssid, size_t ssid_len)
 657 {
 658         if (wpa_s->driver->set_ssid) {
 659                 return wpa_s->driver->set_ssid(wpa_s->drv_priv, ssid,
 660                                                ssid_len);
 661         }
 662         return -1;
 663 }
 664
 665 static inline int wpa_drv_set_bssid(struct wpa_supplicant *wpa_s,
 666                                     const u8 *bssid)
 667 {
 668         if (wpa_s->driver->set_bssid) {
 669                 return wpa_s->driver->set_bssid(wpa_s->drv_priv, bssid);
 670         }
 671         return -1;
 672 }
 673
 674 static inline int wpa_drv_send_mlme(struct wpa_supplicant *wpa_s,
 675                                     const u8 *data, size_t data_len)
 676 {
 677         if (wpa_s->driver->send_mlme)
 678                 return wpa_s->driver->send_mlme(wpa_s->drv_priv,
 679                                                 data, data_len);
 680         return -1;
 681 }
 682
 683 static inline int wpa_drv_mlme_add_sta(struct wpa_supplicant *wpa_s,
 684                                        const u8 *addr, const u8 *supp_rates,
 685                                        size_t supp_rates_len)
 686 {
 687         if (wpa_s->driver->mlme_add_sta)
 688                 return wpa_s->driver->mlme_add_sta(wpa_s->drv_priv, addr,
 689                                                    supp_rates, supp_rates_len);
 690         return -1;
 691 }
 692
 693 static inline int wpa_drv_mlme_remove_sta(struct wpa_supplicant *wpa_s,
 694                                           const u8 *addr)
 695 {
 696         if (wpa_s->driver->mlme_remove_sta)
 697                 return wpa_s->driver->mlme_remove_sta(wpa_s->drv_priv, addr);
 698         return -1;
 699 }
 700
 701 #endif /* WPA_SUPPLICANT_I_H */