src/ap/hostapd.h

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2013, 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 "ap_config.h"
  14 #include "drivers/driver.h"
  15
  16 struct wpa_ctrl_dst;
  17 struct radius_server_data;
  18 struct upnp_wps_device_sm;
  19 struct hostapd_data;
  20 struct sta_info;
  21 struct ieee80211_ht_capabilities;
  22 struct full_dynamic_vlan;
  23 enum wps_event;
  24 union wps_event_data;
  25
  26 struct hostapd_iface;
  27
  28 struct hapd_interfaces {
  29         int (*reload_config)(struct hostapd_iface *iface);
  30         struct hostapd_config * (*config_read_cb)(const char *config_fname);
  31         int (*ctrl_iface_init)(struct hostapd_data *hapd);
  32         void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
  33         int (*for_each_interface)(struct hapd_interfaces *interfaces,
  34                                   int (*cb)(struct hostapd_iface *iface,
  35                                             void *ctx), void *ctx);
  36         int (*driver_init)(struct hostapd_iface *iface);
  37
  38         size_t count;
  39         int global_ctrl_sock;
  40         char *global_iface_path;
  41         char *global_iface_name;
  42 #ifndef CONFIG_NATIVE_WINDOWS
  43         gid_t ctrl_iface_group;
  44 #endif /* CONFIG_NATIVE_WINDOWS */
  45         struct hostapd_iface **iface;
  46
  47         size_t terminate_on_error;
  48 };
  49
  50 enum hostapd_chan_status {
  51         HOSTAPD_CHAN_VALID = 0, /* channel is ready */
  52         HOSTAPD_CHAN_INVALID = 1, /* no usable channel found */
  53         HOSTAPD_CHAN_ACS = 2, /* ACS work being performed */
  54 };
  55
  56 struct hostapd_probereq_cb {
  57         int (*cb)(void *ctx, const u8 *sa, const u8 *da, const u8 *bssid,
  58                   const u8 *ie, size_t ie_len, int ssi_signal);
  59         void *ctx;
  60 };
  61
  62 #define HOSTAPD_RATE_BASIC 0x00000001
  63
  64 struct hostapd_rate_data {
  65         int rate; /* rate in 100 kbps */
  66         int flags; /* HOSTAPD_RATE_ flags */
  67 };
  68
  69 struct hostapd_frame_info {
  70         u32 channel;
  71         u32 datarate;
  72         int ssi_signal; /* dBm */
  73 };
  74
  75 enum wps_status {
  76         WPS_STATUS_SUCCESS = 1,
  77         WPS_STATUS_FAILURE
  78 };
  79
  80 enum pbc_status {
  81         WPS_PBC_STATUS_DISABLE,
  82         WPS_PBC_STATUS_ACTIVE,
  83         WPS_PBC_STATUS_TIMEOUT,
  84         WPS_PBC_STATUS_OVERLAP
  85 };
  86
  87 struct wps_stat {
  88         enum wps_status status;
  89         enum wps_error_indication failure_reason;
  90         enum pbc_status pbc_status;
  91         u8 peer_addr[ETH_ALEN];
  92 };
  93
  94
  95 /**
  96  * struct hostapd_data - hostapd per-BSS data structure
  97  */
  98 struct hostapd_data {
  99         struct hostapd_iface *iface;
 100         struct hostapd_config *iconf;
 101         struct hostapd_bss_config *conf;
 102         int interface_added; /* virtual interface added for this BSS */
 103         unsigned int started:1;
 104
 105         u8 own_addr[ETH_ALEN];
 106
 107         int num_sta; /* number of entries in sta_list */
 108         struct sta_info *sta_list; /* STA info list head */
 109 #define STA_HASH_SIZE 256
 110 #define STA_HASH(sta) (sta[5])
 111         struct sta_info *sta_hash[STA_HASH_SIZE];
 112
 113         /*
 114          * Bitfield for indicating which AIDs are allocated. Only AID values
 115          * 1-2007 are used and as such, the bit at index 0 corresponds to AID
 116          * 1.
 117          */
 118 #define AID_WORDS ((2008 + 31) / 32)
 119         u32 sta_aid[AID_WORDS];
 120
 121         const struct wpa_driver_ops *driver;
 122         void *drv_priv;
 123
 124         void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
 125                                  struct sta_info *sta, int reassoc);
 126
 127         void *msg_ctx; /* ctx for wpa_msg() calls */
 128         void *msg_ctx_parent; /* parent interface ctx for wpa_msg() calls */
 129
 130         struct radius_client_data *radius;
 131         u32 acct_session_id_hi, acct_session_id_lo;
 132         struct radius_das_data *radius_das;
 133
 134         struct iapp_data *iapp;
 135
 136         struct hostapd_cached_radius_acl *acl_cache;
 137         struct hostapd_acl_query_data *acl_queries;
 138
 139         struct wpa_authenticator *wpa_auth;
 140         struct eapol_authenticator *eapol_auth;
 141
 142         struct rsn_preauth_interface *preauth_iface;
 143         struct os_reltime michael_mic_failure;
 144         int michael_mic_failures;
 145         int tkip_countermeasures;
 146
 147         int ctrl_sock;
 148         struct wpa_ctrl_dst *ctrl_dst;
 149
 150         void *ssl_ctx;
 151         void *eap_sim_db_priv;
 152         struct radius_server_data *radius_srv;
 153
 154         int parameter_set_count;
 155
 156         /* Time Advertisement */
 157         u8 time_update_counter;
 158         struct wpabuf *time_adv;
 159
 160 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 161         struct full_dynamic_vlan *full_dynamic_vlan;
 162 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 163
 164         struct l2_packet_data *l2;
 165         struct wps_context *wps;
 166
 167         int beacon_set_done;
 168         struct wpabuf *wps_beacon_ie;
 169         struct wpabuf *wps_probe_resp_ie;
 170 #ifdef CONFIG_WPS
 171         unsigned int ap_pin_failures;
 172         unsigned int ap_pin_failures_consecutive;
 173         struct upnp_wps_device_sm *wps_upnp;
 174         unsigned int ap_pin_lockout_time;
 175
 176         struct wps_stat wps_stats;
 177 #endif /* CONFIG_WPS */
 178
 179         struct hostapd_probereq_cb *probereq_cb;
 180         size_t num_probereq_cb;
 181
 182         void (*public_action_cb)(void *ctx, const u8 *buf, size_t len,
 183                                  int freq);
 184         void *public_action_cb_ctx;
 185         void (*public_action_cb2)(void *ctx, const u8 *buf, size_t len,
 186                                   int freq);
 187         void *public_action_cb2_ctx;
 188
 189         int (*vendor_action_cb)(void *ctx, const u8 *buf, size_t len,
 190                                 int freq);
 191         void *vendor_action_cb_ctx;
 192
 193         void (*wps_reg_success_cb)(void *ctx, const u8 *mac_addr,
 194                                    const u8 *uuid_e);
 195         void *wps_reg_success_cb_ctx;
 196
 197         void (*wps_event_cb)(void *ctx, enum wps_event event,
 198                              union wps_event_data *data);
 199         void *wps_event_cb_ctx;
 200
 201         void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr,
 202                                   int authorized, const u8 *p2p_dev_addr);
 203         void *sta_authorized_cb_ctx;
 204
 205         void (*setup_complete_cb)(void *ctx);
 206         void *setup_complete_cb_ctx;
 207
 208         void (*new_psk_cb)(void *ctx, const u8 *mac_addr,
 209                            const u8 *p2p_dev_addr, const u8 *psk,
 210                            size_t psk_len);
 211         void *new_psk_cb_ctx;
 212
 213         /* channel switch parameters */
 214         struct hostapd_freq_params cs_freq_params;
 215         u8 cs_count;
 216         int cs_block_tx;
 217         unsigned int cs_c_off_beacon;
 218         unsigned int cs_c_off_proberesp;
 219         int csa_in_progress;
 220
 221 #ifdef CONFIG_P2P
 222         struct p2p_data *p2p;
 223         struct p2p_group *p2p_group;
 224         struct wpabuf *p2p_beacon_ie;
 225         struct wpabuf *p2p_probe_resp_ie;
 226
 227         /* Number of non-P2P association stations */
 228         int num_sta_no_p2p;
 229
 230         /* Periodic NoA (used only when no non-P2P clients in the group) */
 231         int noa_enabled;
 232         int noa_start;
 233         int noa_duration;
 234 #endif /* CONFIG_P2P */
 235 #ifdef CONFIG_INTERWORKING
 236         size_t gas_frag_limit;
 237 #endif /* CONFIG_INTERWORKING */
 238
 239 #ifdef CONFIG_SQLITE
 240         struct hostapd_eap_user tmp_eap_user;
 241 #endif /* CONFIG_SQLITE */
 242
 243 #ifdef CONFIG_SAE
 244         /** Key used for generating SAE anti-clogging tokens */
 245         u8 sae_token_key[8];
 246         struct os_reltime last_sae_token_key_update;
 247 #endif /* CONFIG_SAE */
 248
 249 #ifdef CONFIG_TESTING_OPTIONS
 250         int ext_mgmt_frame_handling;
 251 #endif /* CONFIG_TESTING_OPTIONS */
 252 };
 253
 254
 255 /**
 256  * struct hostapd_iface - hostapd per-interface data structure
 257  */
 258 struct hostapd_iface {
 259         struct hapd_interfaces *interfaces;
 260         void *owner;
 261         char *config_fname;
 262         struct hostapd_config *conf;
 263         char phy[16]; /* Name of the PHY (radio) */
 264
 265         enum hostapd_iface_state {
 266                 HAPD_IFACE_UNINITIALIZED,
 267                 HAPD_IFACE_DISABLED,
 268                 HAPD_IFACE_COUNTRY_UPDATE,
 269                 HAPD_IFACE_ACS,
 270                 HAPD_IFACE_HT_SCAN,
 271                 HAPD_IFACE_DFS,
 272                 HAPD_IFACE_ENABLED
 273         } state;
 274
 275         size_t num_bss;
 276         struct hostapd_data **bss;
 277
 278         unsigned int wait_channel_update:1;
 279         unsigned int cac_started:1;
 280
 281         /*
 282          * When set, indicates that the driver will handle the AP
 283          * teardown: delete global keys, station keys, and stations.
 284          */
 285         unsigned int driver_ap_teardown:1;
 286
 287         int num_ap; /* number of entries in ap_list */
 288         struct ap_info *ap_list; /* AP info list head */
 289         struct ap_info *ap_hash[STA_HASH_SIZE];
 290
 291         unsigned int drv_flags;
 292
 293         /*
 294          * A bitmap of supported protocols for probe response offload. See
 295          * struct wpa_driver_capa in driver.h
 296          */
 297         unsigned int probe_resp_offloads;
 298
 299         /* extended capabilities supported by the driver */
 300         const u8 *extended_capa, *extended_capa_mask;
 301         unsigned int extended_capa_len;
 302
 303         unsigned int drv_max_acl_mac_addrs;
 304
 305         struct hostapd_hw_modes *hw_features;
 306         int num_hw_features;
 307         struct hostapd_hw_modes *current_mode;
 308         /* Rates that are currently used (i.e., filtered copy of
 309          * current_mode->channels */
 310         int num_rates;
 311         struct hostapd_rate_data *current_rates;
 312         int *basic_rates;
 313         int freq;
 314
 315         u16 hw_flags;
 316
 317         /* Number of associated Non-ERP stations (i.e., stations using 802.11b
 318          * in 802.11g BSS) */
 319         int num_sta_non_erp;
 320
 321         /* Number of associated stations that do not support Short Slot Time */
 322         int num_sta_no_short_slot_time;
 323
 324         /* Number of associated stations that do not support Short Preamble */
 325         int num_sta_no_short_preamble;
 326
 327         int olbc; /* Overlapping Legacy BSS Condition */
 328
 329         /* Number of HT associated stations that do not support greenfield */
 330         int num_sta_ht_no_gf;
 331
 332         /* Number of associated non-HT stations */
 333         int num_sta_no_ht;
 334
 335         /* Number of HT associated stations 20 MHz */
 336         int num_sta_ht_20mhz;
 337
 338         /* Number of HT40 intolerant stations */
 339         int num_sta_ht40_intolerant;
 340
 341         /* Overlapping BSS information */
 342         int olbc_ht;
 343
 344         u16 ht_op_mode;
 345
 346         /* surveying helpers */
 347
 348         /* number of channels surveyed */
 349         unsigned int chans_surveyed;
 350
 351         /* lowest observed noise floor in dBm */
 352         s8 lowest_nf;
 353
 354         unsigned int dfs_cac_ms;
 355         struct os_reltime dfs_cac_start;
 356
 357         /* Latched with the actual secondary channel information and will be
 358          * used while juggling between HT20 and HT40 modes. */
 359         int secondary_ch;
 360
 361 #ifdef CONFIG_ACS
 362         unsigned int acs_num_completed_scans;
 363 #endif /* CONFIG_ACS */
 364
 365         void (*scan_cb)(struct hostapd_iface *iface);
 366         int num_ht40_scan_tries;
 367 };
 368
 369 /* hostapd.c */
 370 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
 371                                int (*cb)(struct hostapd_iface *iface,
 372                                          void *ctx), void *ctx);
 373 int hostapd_reload_config(struct hostapd_iface *iface);
 374 struct hostapd_data *
 375 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
 376                        struct hostapd_config *conf,
 377                        struct hostapd_bss_config *bss);
 378 int hostapd_setup_interface(struct hostapd_iface *iface);
 379 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
 380 void hostapd_interface_deinit(struct hostapd_iface *iface);
 381 void hostapd_interface_free(struct hostapd_iface *iface);
 382 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
 383                                     const char *config_file);
 384 struct hostapd_iface *
 385 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
 386                            const char *config_fname, int debug);
 387 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 388                            int reassoc);
 389 void hostapd_interface_deinit_free(struct hostapd_iface *iface);
 390 int hostapd_enable_iface(struct hostapd_iface *hapd_iface);
 391 int hostapd_reload_iface(struct hostapd_iface *hapd_iface);
 392 int hostapd_disable_iface(struct hostapd_iface *hapd_iface);
 393 int hostapd_add_iface(struct hapd_interfaces *ifaces, char *buf);
 394 int hostapd_remove_iface(struct hapd_interfaces *ifaces, char *buf);
 395 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator);
 396 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s);
 397 const char * hostapd_state_text(enum hostapd_iface_state s);
 398 int hostapd_switch_channel(struct hostapd_data *hapd,
 399                            struct csa_settings *settings);
 400 void hostapd_cleanup_cs_params(struct hostapd_data *hapd);
 401
 402 /* utils.c */
 403 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
 404                                  int (*cb)(void *ctx, const u8 *sa,
 405                                            const u8 *da, const u8 *bssid,
 406                                            const u8 *ie, size_t ie_len,
 407                                            int ssi_signal),
 408                                  void *ctx);
 409 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
 410
 411 /* drv_callbacks.c (TODO: move to somewhere else?) */
 412 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
 413                         const u8 *ie, size_t ielen, int reassoc);
 414 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr);
 415 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr);
 416 void hostapd_event_connect_failed_reason(struct hostapd_data *hapd,
 417                                          const u8 *addr, int reason_code);
 418 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
 419                          const u8 *bssid, const u8 *ie, size_t ie_len,
 420                          int ssi_signal);
 421 void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
 422                              int offset, int width, int cf1, int cf2);
 423
 424 const struct hostapd_eap_user *
 425 hostapd_get_eap_user(struct hostapd_data *hapd, const u8 *identity,
 426                      size_t identity_len, int phase2);
 427
 428 #endif /* HOSTAPD_H */