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 char *global_iface_path; 45 char *global_iface_name; 46 #ifndef CONFIG_NATIVE_WINDOWS 47 gid_t ctrl_iface_group; 48 #endif /* CONFIG_NATIVE_WINDOWS */ 49 struct hostapd_iface **iface; 50 51 size_t terminate_on_error; 52 }; 53 54 enum hostapd_chan_status { 55 HOSTAPD_CHAN_VALID = 0, /* channel is ready */ 56 HOSTAPD_CHAN_INVALID = 1, /* no usable channel found */ 57 HOSTAPD_CHAN_ACS = 2, /* ACS work being performed */ 58 }; 59 60 struct hostapd_probereq_cb { 61 int (*cb)(void *ctx, const u8 *sa, const u8 *da, const u8 *bssid, 62 const u8 *ie, size_t ie_len, int ssi_signal); 63 void *ctx; 64 }; 65 66 #define HOSTAPD_RATE_BASIC 0x00000001 67 68 struct hostapd_rate_data { 69 int rate; /* rate in 100 kbps */ 70 int flags; /* HOSTAPD_RATE_ flags */ 71 }; 72 73 struct hostapd_frame_info { 74 u32 channel; 75 u32 datarate; 76 int ssi_signal; /* dBm */ 77 }; 78 79 enum wps_status { 80 WPS_STATUS_SUCCESS = 1, 81 WPS_STATUS_FAILURE 82 }; 83 84 enum pbc_status { 85 WPS_PBC_STATUS_DISABLE, 86 WPS_PBC_STATUS_ACTIVE, 87 WPS_PBC_STATUS_TIMEOUT, 88 WPS_PBC_STATUS_OVERLAP 89 }; 90 91 struct wps_stat { 92 enum wps_status status; 93 enum wps_error_indication failure_reason; 94 enum pbc_status pbc_status; 95 u8 peer_addr[ETH_ALEN]; 96 }; 97 98 99 /** 100 * struct hostapd_data - hostapd per-BSS data structure 101 */ 102 struct hostapd_data { 103 struct hostapd_iface *iface; 104 struct hostapd_config *iconf; 105 struct hostapd_bss_config *conf; 106 int interface_added; /* virtual interface added for this BSS */ 107 unsigned int started:1; 108 unsigned int disabled:1; 109 unsigned int reenable_beacon:1; 110 111 u8 own_addr[ETH_ALEN]; 112 113 int num_sta; /* number of entries in sta_list */ 114 struct sta_info *sta_list; /* STA info list head */ 115 #define STA_HASH_SIZE 256 116 #define STA_HASH(sta) (sta[5]) 117 struct sta_info *sta_hash[STA_HASH_SIZE]; 118 119 /* 120 * Bitfield for indicating which AIDs are allocated. Only AID values 121 * 1-2007 are used and as such, the bit at index 0 corresponds to AID 122 * 1. 123 */ 124 #define AID_WORDS ((2008 + 31) / 32) 125 u32 sta_aid[AID_WORDS]; 126 127 const struct wpa_driver_ops *driver; 128 void *drv_priv; 129 130 void (*new_assoc_sta_cb)(struct hostapd_data *hapd, 131 struct sta_info *sta, int reassoc); 132 133 void *msg_ctx; /* ctx for wpa_msg() calls */ 134 void *msg_ctx_parent; /* parent interface ctx for wpa_msg() calls */ 135 136 struct radius_client_data *radius; 137 u32 acct_session_id_hi, acct_session_id_lo; 138 struct radius_das_data *radius_das; 139 140 struct iapp_data *iapp; 141 142 struct hostapd_cached_radius_acl *acl_cache; 143 struct hostapd_acl_query_data *acl_queries; 144 145 struct wpa_authenticator *wpa_auth; 146 struct eapol_authenticator *eapol_auth; 147 148 struct rsn_preauth_interface *preauth_iface; 149 struct os_reltime michael_mic_failure; 150 int michael_mic_failures; 151 int tkip_countermeasures; 152 153 int ctrl_sock; 154 struct wpa_ctrl_dst *ctrl_dst; 155 156 void *ssl_ctx; 157 void *eap_sim_db_priv; 158 struct radius_server_data *radius_srv; 159 struct dl_list erp_keys; /* struct eap_server_erp_key */ 160 161 int parameter_set_count; 162 163 /* Time Advertisement */ 164 u8 time_update_counter; 165 struct wpabuf *time_adv; 166 167 #ifdef CONFIG_FULL_DYNAMIC_VLAN 168 struct full_dynamic_vlan *full_dynamic_vlan; 169 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 170 171 struct l2_packet_data *l2; 172 struct wps_context *wps; 173 174 int beacon_set_done; 175 struct wpabuf *wps_beacon_ie; 176 struct wpabuf *wps_probe_resp_ie; 177 #ifdef CONFIG_WPS 178 unsigned int ap_pin_failures; 179 unsigned int ap_pin_failures_consecutive; 180 struct upnp_wps_device_sm *wps_upnp; 181 unsigned int ap_pin_lockout_time; 182 183 struct wps_stat wps_stats; 184 #endif /* CONFIG_WPS */ 185 186 struct hostapd_probereq_cb *probereq_cb; 187 size_t num_probereq_cb; 188 189 void (*public_action_cb)(void *ctx, const u8 *buf, size_t len, 190 int freq); 191 void *public_action_cb_ctx; 192 void (*public_action_cb2)(void *ctx, const u8 *buf, size_t len, 193 int freq); 194 void *public_action_cb2_ctx; 195 196 int (*vendor_action_cb)(void *ctx, const u8 *buf, size_t len, 197 int freq); 198 void *vendor_action_cb_ctx; 199 200 void (*wps_reg_success_cb)(void *ctx, const u8 *mac_addr, 201 const u8 *uuid_e); 202 void *wps_reg_success_cb_ctx; 203 204 void (*wps_event_cb)(void *ctx, enum wps_event event, 205 union wps_event_data *data); 206 void *wps_event_cb_ctx; 207 208 void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr, 209 int authorized, const u8 *p2p_dev_addr); 210 void *sta_authorized_cb_ctx; 211 212 void (*setup_complete_cb)(void *ctx); 213 void *setup_complete_cb_ctx; 214 215 void (*new_psk_cb)(void *ctx, const u8 *mac_addr, 216 const u8 *p2p_dev_addr, const u8 *psk, 217 size_t psk_len); 218 void *new_psk_cb_ctx; 219 220 /* channel switch parameters */ 221 struct hostapd_freq_params cs_freq_params; 222 u8 cs_count; 223 int cs_block_tx; 224 unsigned int cs_c_off_beacon; 225 unsigned int cs_c_off_proberesp; 226 int csa_in_progress; 227 228 /* BSS Load */ 229 unsigned int bss_load_update_timeout; 230 231 #ifdef CONFIG_P2P 232 struct p2p_data *p2p; 233 struct p2p_group *p2p_group; 234 struct wpabuf *p2p_beacon_ie; 235 struct wpabuf *p2p_probe_resp_ie; 236 237 /* Number of non-P2P association stations */ 238 int num_sta_no_p2p; 239 240 /* Periodic NoA (used only when no non-P2P clients in the group) */ 241 int noa_enabled; 242 int noa_start; 243 int noa_duration; 244 #endif /* CONFIG_P2P */ 245 #ifdef CONFIG_INTERWORKING 246 size_t gas_frag_limit; 247 #endif /* CONFIG_INTERWORKING */ 248 #ifdef CONFIG_PROXYARP 249 struct l2_packet_data *sock_dhcp; 250 struct l2_packet_data *sock_ndisc; 251 #endif /* CONFIG_PROXYARP */ 252 #ifdef CONFIG_MESH 253 int num_plinks; 254 int max_plinks; 255 void (*mesh_sta_free_cb)(struct sta_info *sta); 256 struct wpabuf *mesh_pending_auth; 257 struct os_reltime mesh_pending_auth_time; 258 #endif /* CONFIG_MESH */ 259 260 #ifdef CONFIG_SQLITE 261 struct hostapd_eap_user tmp_eap_user; 262 #endif /* CONFIG_SQLITE */ 263 264 #ifdef CONFIG_SAE 265 /** Key used for generating SAE anti-clogging tokens */ 266 u8 sae_token_key[8]; 267 struct os_reltime last_sae_token_key_update; 268 #endif /* CONFIG_SAE */ 269 270 #ifdef CONFIG_TESTING_OPTIONS 271 unsigned int ext_mgmt_frame_handling:1; 272 unsigned int ext_eapol_frame_io:1; 273 274 struct l2_packet_data *l2_test; 275 #endif /* CONFIG_TESTING_OPTIONS */ 276 }; 277 278 279 /** 280 * struct hostapd_iface - hostapd per-interface data structure 281 */ 282 struct hostapd_iface { 283 struct hapd_interfaces *interfaces; 284 void *owner; 285 char *config_fname; 286 struct hostapd_config *conf; 287 char phy[16]; /* Name of the PHY (radio) */ 288 289 enum hostapd_iface_state { 290 HAPD_IFACE_UNINITIALIZED, 291 HAPD_IFACE_DISABLED, 292 HAPD_IFACE_COUNTRY_UPDATE, 293 HAPD_IFACE_ACS, 294 HAPD_IFACE_HT_SCAN, 295 HAPD_IFACE_DFS, 296 HAPD_IFACE_ENABLED 297 } state; 298 299 #ifdef CONFIG_MESH 300 struct mesh_conf *mconf; 301 #endif /* CONFIG_MESH */ 302 303 size_t num_bss; 304 struct hostapd_data **bss; 305 306 unsigned int wait_channel_update:1; 307 unsigned int cac_started:1; 308 309 /* 310 * When set, indicates that the driver will handle the AP 311 * teardown: delete global keys, station keys, and stations. 312 */ 313 unsigned int driver_ap_teardown:1; 314 315 int num_ap; /* number of entries in ap_list */ 316 struct ap_info *ap_list; /* AP info list head */ 317 struct ap_info *ap_hash[STA_HASH_SIZE]; 318 319 u64 drv_flags; 320 321 /* SMPS modes supported by the driver (WPA_DRIVER_SMPS_MODE_*) */ 322 unsigned int smps_modes; 323 324 /* 325 * A bitmap of supported protocols for probe response offload. See 326 * struct wpa_driver_capa in driver.h 327 */ 328 unsigned int probe_resp_offloads; 329 330 /* extended capabilities supported by the driver */ 331 const u8 *extended_capa, *extended_capa_mask; 332 unsigned int extended_capa_len; 333 334 unsigned int drv_max_acl_mac_addrs; 335 336 struct hostapd_hw_modes *hw_features; 337 int num_hw_features; 338 struct hostapd_hw_modes *current_mode; 339 /* Rates that are currently used (i.e., filtered copy of 340 * current_mode->channels */ 341 int num_rates; 342 struct hostapd_rate_data *current_rates; 343 int *basic_rates; 344 int freq; 345 346 u16 hw_flags; 347 348 /* Number of associated Non-ERP stations (i.e., stations using 802.11b 349 * in 802.11g BSS) */ 350 int num_sta_non_erp; 351 352 /* Number of associated stations that do not support Short Slot Time */ 353 int num_sta_no_short_slot_time; 354 355 /* Number of associated stations that do not support Short Preamble */ 356 int num_sta_no_short_preamble; 357 358 int olbc; /* Overlapping Legacy BSS Condition */ 359 360 /* Number of HT associated stations that do not support greenfield */ 361 int num_sta_ht_no_gf; 362 363 /* Number of associated non-HT stations */ 364 int num_sta_no_ht; 365 366 /* Number of HT associated stations 20 MHz */ 367 int num_sta_ht_20mhz; 368 369 /* Number of HT40 intolerant stations */ 370 int num_sta_ht40_intolerant; 371 372 /* Overlapping BSS information */ 373 int olbc_ht; 374 375 u16 ht_op_mode; 376 377 /* surveying helpers */ 378 379 /* number of channels surveyed */ 380 unsigned int chans_surveyed; 381 382 /* lowest observed noise floor in dBm */ 383 s8 lowest_nf; 384 385 /* channel utilization calculation */ 386 u64 last_channel_time; 387 u64 last_channel_time_busy; 388 u8 channel_utilization; 389 390 unsigned int dfs_cac_ms; 391 struct os_reltime dfs_cac_start; 392 393 /* Latched with the actual secondary channel information and will be 394 * used while juggling between HT20 and HT40 modes. */ 395 int secondary_ch; 396 397 #ifdef CONFIG_ACS 398 unsigned int acs_num_completed_scans; 399 #endif /* CONFIG_ACS */ 400 401 void (*scan_cb)(struct hostapd_iface *iface); 402 int num_ht40_scan_tries; 403 }; 404 405 /* hostapd.c */ 406 int hostapd_for_each_interface(struct hapd_interfaces *interfaces, 407 int (*cb)(struct hostapd_iface *iface, 408 void *ctx), void *ctx); 409 int hostapd_reload_config(struct hostapd_iface *iface); 410 struct hostapd_data * 411 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface, 412 struct hostapd_config *conf, 413 struct hostapd_bss_config *bss); 414 int hostapd_setup_interface(struct hostapd_iface *iface); 415 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err); 416 void hostapd_interface_deinit(struct hostapd_iface *iface); 417 void hostapd_interface_free(struct hostapd_iface *iface); 418 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces, 419 const char *config_file); 420 struct hostapd_iface * 421 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy, 422 const char *config_fname, int debug); 423 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta, 424 int reassoc); 425 void hostapd_interface_deinit_free(struct hostapd_iface *iface); 426 int hostapd_enable_iface(struct hostapd_iface *hapd_iface); 427 int hostapd_reload_iface(struct hostapd_iface *hapd_iface); 428 int hostapd_disable_iface(struct hostapd_iface *hapd_iface); 429 int hostapd_add_iface(struct hapd_interfaces *ifaces, char *buf); 430 int hostapd_remove_iface(struct hapd_interfaces *ifaces, char *buf); 431 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator); 432 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s); 433 const char * hostapd_state_text(enum hostapd_iface_state s); 434 int hostapd_switch_channel(struct hostapd_data *hapd, 435 struct csa_settings *settings); 436 void 437 hostapd_switch_channel_fallback(struct hostapd_iface *iface, 438 const struct hostapd_freq_params *freq_params); 439 void hostapd_cleanup_cs_params(struct hostapd_data *hapd); 440 441 /* utils.c */ 442 int hostapd_register_probereq_cb(struct hostapd_data *hapd, 443 int (*cb)(void *ctx, const u8 *sa, 444 const u8 *da, const u8 *bssid, 445 const u8 *ie, size_t ie_len, 446 int ssi_signal), 447 void *ctx); 448 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr); 449 450 /* drv_callbacks.c (TODO: move to somewhere else?) */ 451 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr, 452 const u8 *ie, size_t ielen, int reassoc); 453 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr); 454 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr); 455 void hostapd_event_connect_failed_reason(struct hostapd_data *hapd, 456 const u8 *addr, int reason_code); 457 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da, 458 const u8 *bssid, const u8 *ie, size_t ie_len, 459 int ssi_signal); 460 void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht, 461 int offset, int width, int cf1, int cf2); 462 463 const struct hostapd_eap_user * 464 hostapd_get_eap_user(struct hostapd_data *hapd, const u8 *identity, 465 size_t identity_len, int phase2); 466 467 #endif /* HOSTAPD_H */ 468