src/ap/hostapd.h

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #ifndef HOSTAPD_H
  10 #define HOSTAPD_H
  11
  12 #include "common/defs.h"
  13 #include "utils/list.h"
  14 #include "ap_config.h"
  15 #include "drivers/driver.h"
  16
  17 struct wpa_ctrl_dst;
  18 struct radius_server_data;
  19 struct upnp_wps_device_sm;
  20 struct hostapd_data;
  21 struct sta_info;
  22 struct ieee80211_ht_capabilities;
  23 struct full_dynamic_vlan;
  24 enum wps_event;
  25 union wps_event_data;
  26 #ifdef CONFIG_MESH
  27 struct mesh_conf;
  28 #endif /* CONFIG_MESH */
  29
  30 struct hostapd_iface;
  31
  32 struct hapd_interfaces {
  33         int (*reload_config)(struct hostapd_iface *iface);
  34         struct hostapd_config * (*config_read_cb)(const char *config_fname);
  35         int (*ctrl_iface_init)(struct hostapd_data *hapd);
  36         void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
  37         int (*for_each_interface)(struct hapd_interfaces *interfaces,
  38                                   int (*cb)(struct hostapd_iface *iface,
  39                                             void *ctx), void *ctx);
  40         int (*driver_init)(struct hostapd_iface *iface);
  41
  42         size_t count;
  43         int global_ctrl_sock;
  44         struct dl_list global_ctrl_dst;
  45         char *global_iface_path;
  46         char *global_iface_name;
  47 #ifndef CONFIG_NATIVE_WINDOWS
  48         gid_t ctrl_iface_group;
  49 #endif /* CONFIG_NATIVE_WINDOWS */
  50         struct hostapd_iface **iface;
  51
  52         size_t terminate_on_error;
  53 #ifndef CONFIG_NO_VLAN
  54         struct dynamic_iface *vlan_priv;
  55 #endif /* CONFIG_NO_VLAN */
  56 #ifdef CONFIG_ETH_P_OUI
  57         struct dl_list eth_p_oui; /* OUI Extended EtherType handlers */
  58 #endif /* CONFIG_ETH_P_OUI */
  59         int eloop_initialized;
  60 };
  61
  62 enum hostapd_chan_status {
  63         HOSTAPD_CHAN_VALID = 0, /* channel is ready */
  64         HOSTAPD_CHAN_INVALID = 1, /* no usable channel found */
  65         HOSTAPD_CHAN_ACS = 2, /* ACS work being performed */
  66 };
  67
  68 struct hostapd_probereq_cb {
  69         int (*cb)(void *ctx, const u8 *sa, const u8 *da, const u8 *bssid,
  70                   const u8 *ie, size_t ie_len, int ssi_signal);
  71         void *ctx;
  72 };
  73
  74 #define HOSTAPD_RATE_BASIC 0x00000001
  75
  76 struct hostapd_rate_data {
  77         int rate; /* rate in 100 kbps */
  78         int flags; /* HOSTAPD_RATE_ flags */
  79 };
  80
  81 struct hostapd_frame_info {
  82         u32 channel;
  83         u32 datarate;
  84         int ssi_signal; /* dBm */
  85 };
  86
  87 enum wps_status {
  88         WPS_STATUS_SUCCESS = 1,
  89         WPS_STATUS_FAILURE
  90 };
  91
  92 enum pbc_status {
  93         WPS_PBC_STATUS_DISABLE,
  94         WPS_PBC_STATUS_ACTIVE,
  95         WPS_PBC_STATUS_TIMEOUT,
  96         WPS_PBC_STATUS_OVERLAP
  97 };
  98
  99 struct wps_stat {
 100         enum wps_status status;
 101         enum wps_error_indication failure_reason;
 102         enum pbc_status pbc_status;
 103         u8 peer_addr[ETH_ALEN];
 104 };
 105
 106 struct hostapd_neighbor_entry {
 107         struct dl_list list;
 108         u8 bssid[ETH_ALEN];
 109         struct wpa_ssid_value ssid;
 110         struct wpabuf *nr;
 111         struct wpabuf *lci;
 112         struct wpabuf *civic;
 113         /* LCI update time */
 114         struct os_time lci_date;
 115         int stationary;
 116 };
 117
 118 /**
 119  * struct hostapd_data - hostapd per-BSS data structure
 120  */
 121 struct hostapd_data {
 122         struct hostapd_iface *iface;
 123         struct hostapd_config *iconf;
 124         struct hostapd_bss_config *conf;
 125         int interface_added; /* virtual interface added for this BSS */
 126         unsigned int started:1;
 127         unsigned int disabled:1;
 128         unsigned int reenable_beacon:1;
 129
 130         u8 own_addr[ETH_ALEN];
 131
 132         int num_sta; /* number of entries in sta_list */
 133         struct sta_info *sta_list; /* STA info list head */
 134 #define STA_HASH_SIZE 256
 135 #define STA_HASH(sta) (sta[5])
 136         struct sta_info *sta_hash[STA_HASH_SIZE];
 137
 138         /*
 139          * Bitfield for indicating which AIDs are allocated. Only AID values
 140          * 1-2007 are used and as such, the bit at index 0 corresponds to AID
 141          * 1.
 142          */
 143 #define AID_WORDS ((2008 + 31) / 32)
 144         u32 sta_aid[AID_WORDS];
 145
 146         const struct wpa_driver_ops *driver;
 147         void *drv_priv;
 148
 149         void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
 150                                  struct sta_info *sta, int reassoc);
 151
 152         void *msg_ctx; /* ctx for wpa_msg() calls */
 153         void *msg_ctx_parent; /* parent interface ctx for wpa_msg() calls */
 154
 155         struct radius_client_data *radius;
 156         u64 acct_session_id;
 157         struct radius_das_data *radius_das;
 158
 159         struct iapp_data *iapp;
 160
 161         struct hostapd_cached_radius_acl *acl_cache;
 162         struct hostapd_acl_query_data *acl_queries;
 163
 164         struct wpa_authenticator *wpa_auth;
 165         struct eapol_authenticator *eapol_auth;
 166
 167         struct rsn_preauth_interface *preauth_iface;
 168         struct os_reltime michael_mic_failure;
 169         int michael_mic_failures;
 170         int tkip_countermeasures;
 171
 172         int ctrl_sock;
 173         struct dl_list ctrl_dst;
 174
 175         void *ssl_ctx;
 176         void *eap_sim_db_priv;
 177         struct radius_server_data *radius_srv;
 178         struct dl_list erp_keys; /* struct eap_server_erp_key */
 179
 180         int parameter_set_count;
 181
 182         /* Time Advertisement */
 183         u8 time_update_counter;
 184         struct wpabuf *time_adv;
 185
 186 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 187         struct full_dynamic_vlan *full_dynamic_vlan;
 188 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 189
 190         struct l2_packet_data *l2;
 191
 192 #ifdef CONFIG_IEEE80211R_AP
 193         struct dl_list l2_queue;
 194         struct dl_list l2_oui_queue;
 195         struct eth_p_oui_ctx *oui_pull;
 196         struct eth_p_oui_ctx *oui_resp;
 197         struct eth_p_oui_ctx *oui_push;
 198         struct eth_p_oui_ctx *oui_sreq;
 199         struct eth_p_oui_ctx *oui_sresp;
 200 #endif /* CONFIG_IEEE80211R_AP */
 201
 202         struct wps_context *wps;
 203
 204         int beacon_set_done;
 205         struct wpabuf *wps_beacon_ie;
 206         struct wpabuf *wps_probe_resp_ie;
 207 #ifdef CONFIG_WPS
 208         unsigned int ap_pin_failures;
 209         unsigned int ap_pin_failures_consecutive;
 210         struct upnp_wps_device_sm *wps_upnp;
 211         unsigned int ap_pin_lockout_time;
 212
 213         struct wps_stat wps_stats;
 214 #endif /* CONFIG_WPS */
 215
 216         struct hostapd_probereq_cb *probereq_cb;
 217         size_t num_probereq_cb;
 218
 219         void (*public_action_cb)(void *ctx, const u8 *buf, size_t len,
 220                                  int freq);
 221         void *public_action_cb_ctx;
 222         void (*public_action_cb2)(void *ctx, const u8 *buf, size_t len,
 223                                   int freq);
 224         void *public_action_cb2_ctx;
 225
 226         int (*vendor_action_cb)(void *ctx, const u8 *buf, size_t len,
 227                                 int freq);
 228         void *vendor_action_cb_ctx;
 229
 230         void (*wps_reg_success_cb)(void *ctx, const u8 *mac_addr,
 231                                    const u8 *uuid_e);
 232         void *wps_reg_success_cb_ctx;
 233
 234         void (*wps_event_cb)(void *ctx, enum wps_event event,
 235                              union wps_event_data *data);
 236         void *wps_event_cb_ctx;
 237
 238         void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr,
 239                                   int authorized, const u8 *p2p_dev_addr);
 240         void *sta_authorized_cb_ctx;
 241
 242         void (*setup_complete_cb)(void *ctx);
 243         void *setup_complete_cb_ctx;
 244
 245         void (*new_psk_cb)(void *ctx, const u8 *mac_addr,
 246                            const u8 *p2p_dev_addr, const u8 *psk,
 247                            size_t psk_len);
 248         void *new_psk_cb_ctx;
 249
 250         /* channel switch parameters */
 251         struct hostapd_freq_params cs_freq_params;
 252         u8 cs_count;
 253         int cs_block_tx;
 254         unsigned int cs_c_off_beacon;
 255         unsigned int cs_c_off_proberesp;
 256         int csa_in_progress;
 257         unsigned int cs_c_off_ecsa_beacon;
 258         unsigned int cs_c_off_ecsa_proberesp;
 259
 260         /* BSS Load */
 261         unsigned int bss_load_update_timeout;
 262
 263 #ifdef CONFIG_P2P
 264         struct p2p_data *p2p;
 265         struct p2p_group *p2p_group;
 266         struct wpabuf *p2p_beacon_ie;
 267         struct wpabuf *p2p_probe_resp_ie;
 268
 269         /* Number of non-P2P association stations */
 270         int num_sta_no_p2p;
 271
 272         /* Periodic NoA (used only when no non-P2P clients in the group) */
 273         int noa_enabled;
 274         int noa_start;
 275         int noa_duration;
 276 #endif /* CONFIG_P2P */
 277 #ifdef CONFIG_PROXYARP
 278         struct l2_packet_data *sock_dhcp;
 279         struct l2_packet_data *sock_ndisc;
 280 #endif /* CONFIG_PROXYARP */
 281 #ifdef CONFIG_MESH
 282         int num_plinks;
 283         int max_plinks;
 284         void (*mesh_sta_free_cb)(struct hostapd_data *hapd,
 285                                  struct sta_info *sta);
 286         struct wpabuf *mesh_pending_auth;
 287         struct os_reltime mesh_pending_auth_time;
 288         u8 mesh_required_peer[ETH_ALEN];
 289 #endif /* CONFIG_MESH */
 290
 291 #ifdef CONFIG_SQLITE
 292         struct hostapd_eap_user tmp_eap_user;
 293 #endif /* CONFIG_SQLITE */
 294
 295 #ifdef CONFIG_SAE
 296         /** Key used for generating SAE anti-clogging tokens */
 297         u8 sae_token_key[8];
 298         struct os_reltime last_sae_token_key_update;
 299         int dot11RSNASAERetransPeriod; /* msec */
 300 #endif /* CONFIG_SAE */
 301
 302 #ifdef CONFIG_TESTING_OPTIONS
 303         unsigned int ext_mgmt_frame_handling:1;
 304         unsigned int ext_eapol_frame_io:1;
 305
 306         struct l2_packet_data *l2_test;
 307
 308         enum wpa_alg last_gtk_alg;
 309         int last_gtk_key_idx;
 310         u8 last_gtk[WPA_GTK_MAX_LEN];
 311         size_t last_gtk_len;
 312
 313 #ifdef CONFIG_IEEE80211W
 314         enum wpa_alg last_igtk_alg;
 315         int last_igtk_key_idx;
 316         u8 last_igtk[WPA_IGTK_MAX_LEN];
 317         size_t last_igtk_len;
 318 #endif /* CONFIG_IEEE80211W */
 319 #endif /* CONFIG_TESTING_OPTIONS */
 320
 321 #ifdef CONFIG_MBO
 322         unsigned int mbo_assoc_disallow;
 323         /**
 324          * enable_oce - Enable OCE if it is enabled by user and device also
 325          *              supports OCE.
 326          */
 327         u8 enable_oce;
 328 #endif /* CONFIG_MBO */
 329
 330         struct dl_list nr_db;
 331
 332         u8 beacon_req_token;
 333         u8 lci_req_token;
 334         u8 range_req_token;
 335         unsigned int lci_req_active:1;
 336         unsigned int range_req_active:1;
 337
 338         int dhcp_sock; /* UDP socket used with the DHCP server */
 339
 340 #ifdef CONFIG_DPP
 341         struct dl_list dpp_bootstrap; /* struct dpp_bootstrap_info */
 342         struct dl_list dpp_configurator; /* struct dpp_configurator */
 343         int dpp_init_done;
 344         struct dpp_authentication *dpp_auth;
 345         u8 dpp_allowed_roles;
 346         int dpp_qr_mutual;
 347         int dpp_auth_ok_on_ack;
 348         struct gas_query_ap *gas;
 349         struct dpp_pkex *dpp_pkex;
 350         struct dpp_bootstrap_info *dpp_pkex_bi;
 351         char *dpp_pkex_code;
 352         char *dpp_pkex_identifier;
 353         char *dpp_pkex_auth_cmd;
 354         char *dpp_configurator_params;
 355 #ifdef CONFIG_TESTING_OPTIONS
 356         char *dpp_config_obj_override;
 357         char *dpp_discovery_override;
 358         char *dpp_groups_override;
 359         unsigned int dpp_ignore_netaccesskey_mismatch:1;
 360 #endif /* CONFIG_TESTING_OPTIONS */
 361 #endif /* CONFIG_DPP */
 362 };
 363
 364
 365 struct hostapd_sta_info {
 366         struct dl_list list;
 367         u8 addr[ETH_ALEN];
 368         struct os_reltime last_seen;
 369         int ssi_signal;
 370 #ifdef CONFIG_TAXONOMY
 371         struct wpabuf *probe_ie_taxonomy;
 372 #endif /* CONFIG_TAXONOMY */
 373 };
 374
 375 /**
 376  * struct hostapd_iface - hostapd per-interface data structure
 377  */
 378 struct hostapd_iface {
 379         struct hapd_interfaces *interfaces;
 380         void *owner;
 381         char *config_fname;
 382         struct hostapd_config *conf;
 383         char phy[16]; /* Name of the PHY (radio) */
 384
 385         enum hostapd_iface_state {
 386                 HAPD_IFACE_UNINITIALIZED,
 387                 HAPD_IFACE_DISABLED,
 388                 HAPD_IFACE_COUNTRY_UPDATE,
 389                 HAPD_IFACE_ACS,
 390                 HAPD_IFACE_HT_SCAN,
 391                 HAPD_IFACE_DFS,
 392                 HAPD_IFACE_ENABLED
 393         } state;
 394
 395 #ifdef CONFIG_MESH
 396         struct mesh_conf *mconf;
 397 #endif /* CONFIG_MESH */
 398
 399         size_t num_bss;
 400         struct hostapd_data **bss;
 401
 402         unsigned int wait_channel_update:1;
 403         unsigned int cac_started:1;
 404 #ifdef CONFIG_FST
 405         struct fst_iface *fst;
 406         const struct wpabuf *fst_ies;
 407 #endif /* CONFIG_FST */
 408
 409         /*
 410          * When set, indicates that the driver will handle the AP
 411          * teardown: delete global keys, station keys, and stations.
 412          */
 413         unsigned int driver_ap_teardown:1;
 414
 415         /*
 416          * When set, indicates that this interface is part of list of
 417          * interfaces that need to be started together (synchronously).
 418          */
 419         unsigned int need_to_start_in_sync:1;
 420
 421         /* Ready to start but waiting for other interfaces to become ready. */
 422         unsigned int ready_to_start_in_sync:1;
 423
 424         int num_ap; /* number of entries in ap_list */
 425         struct ap_info *ap_list; /* AP info list head */
 426         struct ap_info *ap_hash[STA_HASH_SIZE];
 427
 428         u64 drv_flags;
 429
 430         /* SMPS modes supported by the driver (WPA_DRIVER_SMPS_MODE_*) */
 431         unsigned int smps_modes;
 432
 433         /*
 434          * A bitmap of supported protocols for probe response offload. See
 435          * struct wpa_driver_capa in driver.h
 436          */
 437         unsigned int probe_resp_offloads;
 438
 439         /* extended capabilities supported by the driver */
 440         const u8 *extended_capa, *extended_capa_mask;
 441         unsigned int extended_capa_len;
 442
 443         unsigned int drv_max_acl_mac_addrs;
 444
 445         struct hostapd_hw_modes *hw_features;
 446         int num_hw_features;
 447         struct hostapd_hw_modes *current_mode;
 448         /* Rates that are currently used (i.e., filtered copy of
 449          * current_mode->channels */
 450         int num_rates;
 451         struct hostapd_rate_data *current_rates;
 452         int *basic_rates;
 453         int freq;
 454
 455         u16 hw_flags;
 456
 457         /* Number of associated Non-ERP stations (i.e., stations using 802.11b
 458          * in 802.11g BSS) */
 459         int num_sta_non_erp;
 460
 461         /* Number of associated stations that do not support Short Slot Time */
 462         int num_sta_no_short_slot_time;
 463
 464         /* Number of associated stations that do not support Short Preamble */
 465         int num_sta_no_short_preamble;
 466
 467         int olbc; /* Overlapping Legacy BSS Condition */
 468
 469         /* Number of HT associated stations that do not support greenfield */
 470         int num_sta_ht_no_gf;
 471
 472         /* Number of associated non-HT stations */
 473         int num_sta_no_ht;
 474
 475         /* Number of HT associated stations 20 MHz */
 476         int num_sta_ht_20mhz;
 477
 478         /* Number of HT40 intolerant stations */
 479         int num_sta_ht40_intolerant;
 480
 481         /* Overlapping BSS information */
 482         int olbc_ht;
 483
 484         u16 ht_op_mode;
 485
 486         /* surveying helpers */
 487
 488         /* number of channels surveyed */
 489         unsigned int chans_surveyed;
 490
 491         /* lowest observed noise floor in dBm */
 492         s8 lowest_nf;
 493
 494         /* channel utilization calculation */
 495         u64 last_channel_time;
 496         u64 last_channel_time_busy;
 497         u8 channel_utilization;
 498
 499         /* eCSA IE will be added only if operating class is specified */
 500         u8 cs_oper_class;
 501
 502         unsigned int dfs_cac_ms;
 503         struct os_reltime dfs_cac_start;
 504
 505         /* Latched with the actual secondary channel information and will be
 506          * used while juggling between HT20 and HT40 modes. */
 507         int secondary_ch;
 508
 509 #ifdef CONFIG_ACS
 510         unsigned int acs_num_completed_scans;
 511 #endif /* CONFIG_ACS */
 512
 513         void (*scan_cb)(struct hostapd_iface *iface);
 514         int num_ht40_scan_tries;
 515
 516         struct dl_list sta_seen; /* struct hostapd_sta_info */
 517         unsigned int num_sta_seen;
 518
 519         u8 dfs_domain;
 520 };
 521
 522 /* hostapd.c */
 523 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
 524                                int (*cb)(struct hostapd_iface *iface,
 525                                          void *ctx), void *ctx);
 526 int hostapd_reload_config(struct hostapd_iface *iface);
 527 struct hostapd_data *
 528 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
 529                        struct hostapd_config *conf,
 530                        struct hostapd_bss_config *bss);
 531 int hostapd_setup_interface(struct hostapd_iface *iface);
 532 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
 533 void hostapd_interface_deinit(struct hostapd_iface *iface);
 534 void hostapd_interface_free(struct hostapd_iface *iface);
 535 struct hostapd_iface * hostapd_alloc_iface(void);
 536 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
 537                                     const char *config_file);
 538 struct hostapd_iface *
 539 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
 540                            const char *config_fname, int debug);
 541 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 542                            int reassoc);
 543 void hostapd_interface_deinit_free(struct hostapd_iface *iface);
 544 int hostapd_enable_iface(struct hostapd_iface *hapd_iface);
 545 int hostapd_reload_iface(struct hostapd_iface *hapd_iface);
 546 int hostapd_disable_iface(struct hostapd_iface *hapd_iface);
 547 int hostapd_add_iface(struct hapd_interfaces *ifaces, char *buf);
 548 int hostapd_remove_iface(struct hapd_interfaces *ifaces, char *buf);
 549 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator);
 550 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s);
 551 const char * hostapd_state_text(enum hostapd_iface_state s);
 552 int hostapd_csa_in_progress(struct hostapd_iface *iface);
 553 int hostapd_switch_channel(struct hostapd_data *hapd,
 554                            struct csa_settings *settings);
 555 void
 556 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
 557                                 const struct hostapd_freq_params *freq_params);
 558 void hostapd_cleanup_cs_params(struct hostapd_data *hapd);
 559 void hostapd_periodic_iface(struct hostapd_iface *iface);
 560 int hostapd_owe_trans_get_info(struct hostapd_data *hapd);
 561
 562 /* utils.c */
 563 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
 564                                  int (*cb)(void *ctx, const u8 *sa,
 565                                            const u8 *da, const u8 *bssid,
 566                                            const u8 *ie, size_t ie_len,
 567                                            int ssi_signal),
 568                                  void *ctx);
 569 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
 570
 571 /* drv_callbacks.c (TODO: move to somewhere else?) */
 572 void hostapd_notify_assoc_fils_finish(struct hostapd_data *hapd,
 573                                       struct sta_info *sta);
 574 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
 575                         const u8 *ie, size_t ielen, int reassoc);
 576 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr);
 577 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr);
 578 void hostapd_event_connect_failed_reason(struct hostapd_data *hapd,
 579                                          const u8 *addr, int reason_code);
 580 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
 581                          const u8 *bssid, const u8 *ie, size_t ie_len,
 582                          int ssi_signal);
 583 void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
 584                              int offset, int width, int cf1, int cf2);
 585 struct survey_results;
 586 void hostapd_event_get_survey(struct hostapd_iface *iface,
 587                               struct survey_results *survey_results);
 588 void hostapd_acs_channel_selected(struct hostapd_data *hapd,
 589                                   struct acs_selected_channels *acs_res);
 590
 591 const struct hostapd_eap_user *
 592 hostapd_get_eap_user(struct hostapd_data *hapd, const u8 *identity,
 593                      size_t identity_len, int phase2);
 594
 595 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
 596                                         const char *ifname);
 597
 598 #ifdef CONFIG_FST
 599 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
 600                                 struct fst_wpa_obj *iface_obj);
 601 #endif /* CONFIG_FST */
 602
 603 #endif /* HOSTAPD_H */