1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j (at) w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10 #include "includes.h" 11 12 #include "common.h" 13 #include "eloop.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/wpa_ctrl.h" 17 #include "wps/wps_i.h" 18 #include "p2p/p2p.h" 19 #include "ap/hostapd.h" 20 #include "ap/ap_config.h" 21 #include "ap/sta_info.h" 22 #include "ap/ap_drv_ops.h" 23 #include "ap/wps_hostapd.h" 24 #include "ap/p2p_hostapd.h" 25 #include "ap/dfs.h" 26 #include "eapol_supp/eapol_supp_sm.h" 27 #include "rsn_supp/wpa.h" 28 #include "wpa_supplicant_i.h" 29 #include "driver_i.h" 30 #include "ap.h" 31 #include "config_ssid.h" 32 #include "config.h" 33 #include "notify.h" 34 #include "scan.h" 35 #include "bss.h" 36 #include "offchannel.h" 37 #include "wps_supplicant.h" 38 #include "p2p_supplicant.h" 39 #include "wifi_display.h" 40 41 42 /* 43 * How many times to try to scan to find the GO before giving up on join 44 * request. 45 */ 46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 47 48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5 49 50 /** 51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef P2P_MAX_CLIENT_IDLE 64 /* 65 * How many seconds to try to reconnect to the GO when connection in P2P client 66 * role has been lost. 67 */ 68 #define P2P_MAX_CLIENT_IDLE 10 69 #endif /* P2P_MAX_CLIENT_IDLE */ 70 71 #ifndef P2P_MAX_INITIAL_CONN_WAIT 72 /* 73 * How many seconds to wait for initial 4-way handshake to get completed after 74 * WPS provisioning step or after the re-invocation of a persistent group on a 75 * P2P Client. 76 */ 77 #define P2P_MAX_INITIAL_CONN_WAIT 10 78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 79 80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 81 /* 82 * How many seconds to wait for initial 4-way handshake to get completed after 83 * WPS provisioning step on the GO. This controls the extra time the P2P 84 * operation is considered to be in progress (e.g., to delay other scans) after 85 * WPS provisioning has been completed on the GO during group formation. 86 */ 87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10 88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 89 90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 91 /* 92 * How many seconds to wait for initial 4-way handshake to get completed after 93 * re-invocation of a persistent group on the GO when the client is expected 94 * to connect automatically (no user interaction). 95 */ 96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 98 99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 100 101 /* 102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 103 * was not possible. 104 */ 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30 106 107 enum p2p_group_removal_reason { 108 P2P_GROUP_REMOVAL_UNKNOWN, 109 P2P_GROUP_REMOVAL_SILENT, 110 P2P_GROUP_REMOVAL_FORMATION_FAILED, 111 P2P_GROUP_REMOVAL_REQUESTED, 112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 113 P2P_GROUP_REMOVAL_UNAVAILABLE, 114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 115 P2P_GROUP_REMOVAL_PSK_FAILURE, 116 P2P_GROUP_REMOVAL_FREQ_CONFLICT, 117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL 118 }; 119 120 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 122 static struct wpa_supplicant * 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 124 int go); 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 126 const u8 *ssid, size_t ssid_len); 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 128 int *force_freq, int *pref_freq, int go, 129 unsigned int *pref_freq_list, 130 unsigned int *num_pref_freq); 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 132 const u8 *ssid, size_t ssid_len); 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 135 const u8 *dev_addr, enum p2p_wps_method wps_method, 136 int auto_join, int freq, 137 const u8 *ssid, size_t ssid_len); 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 143 void *timeout_ctx); 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 146 int group_added); 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 148 static void wpas_stop_listen(void *ctx); 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 152 enum wpa_driver_if_type type); 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 154 int already_deleted); 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 156 struct wpa_used_freq_data *freqs, 157 unsigned int num); 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 160 static void 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 162 struct wpa_used_freq_data *freqs, unsigned int num, 163 enum wpas_p2p_channel_update_trig trig); 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx); 165 166 167 /* 168 * Get the number of concurrent channels that the HW can operate, but that are 169 * currently not in use by any of the wpa_supplicant interfaces. 170 */ 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 172 { 173 int *freqs; 174 int num, unused; 175 176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 177 if (!freqs) 178 return -1; 179 180 num = get_shared_radio_freqs(wpa_s, freqs, 181 wpa_s->num_multichan_concurrent); 182 os_free(freqs); 183 184 unused = wpa_s->num_multichan_concurrent - num; 185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 186 return unused; 187 } 188 189 190 /* 191 * Get the frequencies that are currently in use by one or more of the virtual 192 * interfaces, and that are also valid for P2P operation. 193 */ 194 static unsigned int 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 196 struct wpa_used_freq_data *p2p_freqs, 197 unsigned int len) 198 { 199 struct wpa_used_freq_data *freqs; 200 unsigned int num, i, j; 201 202 freqs = os_calloc(wpa_s->num_multichan_concurrent, 203 sizeof(struct wpa_used_freq_data)); 204 if (!freqs) 205 return 0; 206 207 num = get_shared_radio_freqs_data(wpa_s, freqs, 208 wpa_s->num_multichan_concurrent); 209 210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len); 211 212 for (i = 0, j = 0; i < num && j < len; i++) { 213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 214 p2p_freqs[j++] = freqs[i]; 215 } 216 217 os_free(freqs); 218 219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j); 220 221 return j; 222 } 223 224 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 226 int freq) 227 { 228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 229 return; 230 231 /* Use the wpa_s used to control the P2P Device operation */ 232 wpa_s = wpa_s->global->p2p_init_wpa_s; 233 234 if (wpa_s->conf->p2p_ignore_shared_freq && 235 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 236 wpas_p2p_num_unused_channels(wpa_s) > 0) { 237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 238 freq); 239 freq = 0; 240 } 241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 242 } 243 244 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 246 struct wpa_scan_results *scan_res) 247 { 248 size_t i; 249 250 if (wpa_s->p2p_scan_work) { 251 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 252 wpa_s->p2p_scan_work = NULL; 253 radio_work_done(work); 254 } 255 256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 257 return; 258 259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 260 (int) scan_res->num); 261 262 for (i = 0; i < scan_res->num; i++) { 263 struct wpa_scan_res *bss = scan_res->res[i]; 264 struct os_reltime time_tmp_age, entry_ts; 265 const u8 *ies; 266 size_t ies_len; 267 268 time_tmp_age.sec = bss->age / 1000; 269 time_tmp_age.usec = (bss->age % 1000) * 1000; 270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 271 272 ies = (const u8 *) (bss + 1); 273 ies_len = bss->ie_len; 274 if (bss->beacon_ie_len > 0 && 275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 278 MACSTR, MAC2STR(bss->bssid)); 279 ies = ies + ies_len; 280 ies_len = bss->beacon_ie_len; 281 } 282 283 284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 285 bss->freq, &entry_ts, bss->level, 286 ies, ies_len) > 0) 287 break; 288 } 289 290 p2p_scan_res_handled(wpa_s->global->p2p); 291 } 292 293 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 295 { 296 struct wpa_supplicant *wpa_s = work->wpa_s; 297 struct wpa_driver_scan_params *params = work->ctx; 298 int ret; 299 300 if (deinit) { 301 if (!work->started) { 302 wpa_scan_free_params(params); 303 return; 304 } 305 306 wpa_s->p2p_scan_work = NULL; 307 return; 308 } 309 310 if (wpa_s->clear_driver_scan_cache) { 311 wpa_printf(MSG_DEBUG, 312 "Request driver to clear scan cache due to local BSS flush"); 313 params->only_new_results = 1; 314 } 315 ret = wpa_drv_scan(wpa_s, params); 316 if (ret == 0) 317 wpa_s->curr_scan_cookie = params->scan_cookie; 318 wpa_scan_free_params(params); 319 work->ctx = NULL; 320 if (ret) { 321 radio_work_done(work); 322 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 323 return; 324 } 325 326 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 327 os_get_reltime(&wpa_s->scan_trigger_time); 328 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 329 wpa_s->own_scan_requested = 1; 330 wpa_s->clear_driver_scan_cache = 0; 331 wpa_s->p2p_scan_work = work; 332 } 333 334 335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s, 336 int freq) 337 { 338 if (wpa_s->global->p2p_24ghz_social_channels && 339 (freq == 2412 || freq == 2437 || freq == 2462)) { 340 /* 341 * Search all social channels regardless of whether these have 342 * been disabled for P2P operating channel use to avoid missing 343 * peers. 344 */ 345 return 1; 346 } 347 return p2p_supported_freq(wpa_s->global->p2p, freq); 348 } 349 350 351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 352 unsigned int num_req_dev_types, 353 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 354 { 355 struct wpa_supplicant *wpa_s = ctx; 356 struct wpa_driver_scan_params *params = NULL; 357 struct wpabuf *wps_ie, *ies; 358 unsigned int num_channels = 0; 359 int social_channels_freq[] = { 2412, 2437, 2462, 60480 }; 360 size_t ielen; 361 u8 *n, i; 362 unsigned int bands; 363 364 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 365 return -1; 366 367 if (wpa_s->p2p_scan_work) { 368 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 369 return -1; 370 } 371 372 params = os_zalloc(sizeof(*params)); 373 if (params == NULL) 374 return -1; 375 376 /* P2P Wildcard SSID */ 377 params->num_ssids = 1; 378 n = os_malloc(P2P_WILDCARD_SSID_LEN); 379 if (n == NULL) 380 goto fail; 381 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 382 params->ssids[0].ssid = n; 383 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 384 385 wpa_s->wps->dev.p2p = 1; 386 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 387 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 388 num_req_dev_types, req_dev_types); 389 if (wps_ie == NULL) 390 goto fail; 391 392 switch (type) { 393 case P2P_SCAN_SOCIAL: 394 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1, 395 sizeof(int)); 396 if (params->freqs == NULL) 397 goto fail; 398 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 399 if (wpas_p2p_search_social_channel( 400 wpa_s, social_channels_freq[i])) 401 params->freqs[num_channels++] = 402 social_channels_freq[i]; 403 } 404 params->freqs[num_channels++] = 0; 405 break; 406 case P2P_SCAN_FULL: 407 break; 408 case P2P_SCAN_SPECIFIC: 409 params->freqs = os_calloc(2, sizeof(int)); 410 if (params->freqs == NULL) 411 goto fail; 412 params->freqs[0] = freq; 413 params->freqs[1] = 0; 414 break; 415 case P2P_SCAN_SOCIAL_PLUS_ONE: 416 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2, 417 sizeof(int)); 418 if (params->freqs == NULL) 419 goto fail; 420 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 421 if (wpas_p2p_search_social_channel( 422 wpa_s, social_channels_freq[i])) 423 params->freqs[num_channels++] = 424 social_channels_freq[i]; 425 } 426 if (p2p_supported_freq(wpa_s->global->p2p, freq)) 427 params->freqs[num_channels++] = freq; 428 params->freqs[num_channels++] = 0; 429 break; 430 } 431 432 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 433 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 434 if (ies == NULL) { 435 wpabuf_free(wps_ie); 436 goto fail; 437 } 438 wpabuf_put_buf(ies, wps_ie); 439 wpabuf_free(wps_ie); 440 441 bands = wpas_get_bands(wpa_s, params->freqs); 442 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands); 443 444 params->p2p_probe = 1; 445 n = os_malloc(wpabuf_len(ies)); 446 if (n == NULL) { 447 wpabuf_free(ies); 448 goto fail; 449 } 450 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 451 params->extra_ies = n; 452 params->extra_ies_len = wpabuf_len(ies); 453 wpabuf_free(ies); 454 455 radio_remove_works(wpa_s, "p2p-scan", 0); 456 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 457 params) < 0) 458 goto fail; 459 return 0; 460 461 fail: 462 wpa_scan_free_params(params); 463 return -1; 464 } 465 466 467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 468 { 469 switch (p2p_group_interface) { 470 case P2P_GROUP_INTERFACE_PENDING: 471 return WPA_IF_P2P_GROUP; 472 case P2P_GROUP_INTERFACE_GO: 473 return WPA_IF_P2P_GO; 474 case P2P_GROUP_INTERFACE_CLIENT: 475 return WPA_IF_P2P_CLIENT; 476 } 477 478 return WPA_IF_P2P_GROUP; 479 } 480 481 482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 483 const u8 *ssid, 484 size_t ssid_len, int *go) 485 { 486 struct wpa_ssid *s; 487 488 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 489 for (s = wpa_s->conf->ssid; s; s = s->next) { 490 if (s->disabled != 0 || !s->p2p_group || 491 s->ssid_len != ssid_len || 492 os_memcmp(ssid, s->ssid, ssid_len) != 0) 493 continue; 494 if (s->mode == WPAS_MODE_P2P_GO && 495 s != wpa_s->current_ssid) 496 continue; 497 if (go) 498 *go = s->mode == WPAS_MODE_P2P_GO; 499 return wpa_s; 500 } 501 } 502 503 return NULL; 504 } 505 506 507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx) 508 { 509 struct wpa_supplicant *wpa_s = eloop_ctx; 510 wpa_printf(MSG_DEBUG, 511 "P2P: Complete previously requested removal of %s", 512 wpa_s->ifname); 513 wpas_p2p_disconnect(wpa_s); 514 } 515 516 517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s, 518 struct wpa_supplicant *calling_wpa_s) 519 { 520 if (calling_wpa_s == wpa_s && wpa_s && 521 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 522 /* 523 * The calling wpa_s instance is going to be removed. Do that 524 * from an eloop callback to keep the instance available until 525 * the caller has returned. This my be needed, e.g., to provide 526 * control interface responses on the per-interface socket. 527 */ 528 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect, 529 wpa_s, NULL) < 0) 530 return -1; 531 return 0; 532 } 533 534 return wpas_p2p_disconnect(wpa_s); 535 } 536 537 538 /* Determine total number of clients in active groups where we are the GO */ 539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s) 540 { 541 unsigned int count = 0; 542 struct wpa_ssid *s; 543 544 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 545 for (s = wpa_s->conf->ssid; s; s = s->next) { 546 wpa_printf(MSG_DEBUG, 547 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 548 wpa_s, s, s->disabled, s->p2p_group, 549 s->mode); 550 if (!s->disabled && s->p2p_group && 551 s->mode == WPAS_MODE_P2P_GO) { 552 count += p2p_get_group_num_members( 553 wpa_s->p2p_group); 554 } 555 } 556 } 557 558 return count; 559 } 560 561 562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s) 563 { 564 return !wpa_s->p2p_mgmt && wpa_s->current_ssid && 565 !wpa_s->current_ssid->disabled && 566 wpa_s->current_ssid->p2p_group && 567 wpa_s->current_ssid->p2p_persistent_group; 568 } 569 570 571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s) 572 { 573 return p2p_is_active_persistent_group(wpa_s) && 574 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO; 575 } 576 577 578 /* Find an interface for a P2P group where we are the GO */ 579 static struct wpa_supplicant * 580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s) 581 { 582 struct wpa_supplicant *save = NULL; 583 584 if (!wpa_s) 585 return NULL; 586 587 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 588 if (!p2p_is_active_persistent_go(wpa_s)) 589 continue; 590 591 /* Prefer a group with connected clients */ 592 if (p2p_get_group_num_members(wpa_s->p2p_group)) 593 return wpa_s; 594 save = wpa_s; 595 } 596 597 /* No group with connected clients, so pick the one without (if any) */ 598 return save; 599 } 600 601 602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s) 603 { 604 return p2p_is_active_persistent_group(wpa_s) && 605 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 606 } 607 608 609 /* Find an interface for a P2P group where we are the P2P Client */ 610 static struct wpa_supplicant * 611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s) 612 { 613 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 614 if (p2p_is_active_persistent_cli(wpa_s)) 615 return wpa_s; 616 } 617 618 return NULL; 619 } 620 621 622 /* Find a persistent group where we are the GO */ 623 static struct wpa_ssid * 624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s) 625 { 626 struct wpa_ssid *s; 627 628 for (s = wpa_s->conf->ssid; s; s = s->next) { 629 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO) 630 return s; 631 } 632 633 return NULL; 634 } 635 636 637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role, 638 unsigned int *force_freq, 639 unsigned int *pref_freq) 640 { 641 struct wpa_supplicant *wpa_s = ctx; 642 struct wpa_ssid *s; 643 u8 conncap = P2PS_SETUP_NONE; 644 unsigned int owned_members = 0; 645 struct wpa_supplicant *go_wpa_s, *cli_wpa_s; 646 struct wpa_ssid *persistent_go; 647 int p2p_no_group_iface; 648 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 649 650 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role); 651 652 if (force_freq) 653 *force_freq = 0; 654 if (pref_freq) 655 *pref_freq = 0; 656 657 size = P2P_MAX_PREF_CHANNELS; 658 if (force_freq && pref_freq && 659 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq, 660 (int *) pref_freq, 0, pref_freq_list, &size)) 661 wpas_p2p_set_own_freq_preference(wpa_s, 662 *force_freq ? *force_freq : 663 *pref_freq); 664 665 /* 666 * For non-concurrent capable devices: 667 * If persistent_go, then no new. 668 * If GO, then no client. 669 * If client, then no GO. 670 */ 671 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 672 if (go_wpa_s) 673 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group); 674 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 675 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s); 676 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s); 677 678 wpa_printf(MSG_DEBUG, 679 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p", 680 go_wpa_s, owned_members, cli_wpa_s, persistent_go); 681 682 /* If not concurrent, restrict our choices */ 683 if (p2p_no_group_iface) { 684 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface"); 685 686 if (cli_wpa_s) 687 return P2PS_SETUP_NONE; 688 689 if (go_wpa_s) { 690 if (role == P2PS_SETUP_CLIENT || 691 incoming == P2PS_SETUP_GROUP_OWNER || 692 p2p_client_limit_reached(go_wpa_s->p2p_group)) 693 return P2PS_SETUP_NONE; 694 695 return P2PS_SETUP_GROUP_OWNER; 696 } 697 698 if (persistent_go) { 699 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) { 700 if (!incoming) 701 return P2PS_SETUP_GROUP_OWNER | 702 P2PS_SETUP_CLIENT; 703 if (incoming == P2PS_SETUP_NEW) { 704 u8 r; 705 706 if (os_get_random(&r, sizeof(r)) < 0 || 707 (r & 1)) 708 return P2PS_SETUP_CLIENT; 709 return P2PS_SETUP_GROUP_OWNER; 710 } 711 } 712 } 713 } 714 715 /* If a required role has been specified, handle it here */ 716 if (role && role != P2PS_SETUP_NEW) { 717 switch (incoming) { 718 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 719 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 720 /* 721 * Peer has an active GO, so if the role allows it and 722 * we do not have any active roles, become client. 723 */ 724 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && 725 !cli_wpa_s) 726 return P2PS_SETUP_CLIENT; 727 728 /* fall through */ 729 730 case P2PS_SETUP_NONE: 731 case P2PS_SETUP_NEW: 732 conncap = role; 733 goto grp_owner; 734 735 case P2PS_SETUP_GROUP_OWNER: 736 /* 737 * Must be a complimentary role - cannot be a client to 738 * more than one peer. 739 */ 740 if (incoming == role || cli_wpa_s) 741 return P2PS_SETUP_NONE; 742 743 return P2PS_SETUP_CLIENT; 744 745 case P2PS_SETUP_CLIENT: 746 /* Must be a complimentary role */ 747 if (incoming != role) { 748 conncap = P2PS_SETUP_GROUP_OWNER; 749 goto grp_owner; 750 } 751 752 default: 753 return P2PS_SETUP_NONE; 754 } 755 } 756 757 /* 758 * For now, we only will support ownership of one group, and being a 759 * client of one group. Therefore, if we have either an existing GO 760 * group, or an existing client group, we will not do a new GO 761 * negotiation, but rather try to re-use the existing groups. 762 */ 763 switch (incoming) { 764 case P2PS_SETUP_NONE: 765 case P2PS_SETUP_NEW: 766 if (cli_wpa_s) 767 conncap = P2PS_SETUP_GROUP_OWNER; 768 else if (!owned_members) 769 conncap = P2PS_SETUP_NEW; 770 else if (incoming == P2PS_SETUP_NONE) 771 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT; 772 else 773 conncap = P2PS_SETUP_CLIENT; 774 break; 775 776 case P2PS_SETUP_CLIENT: 777 conncap = P2PS_SETUP_GROUP_OWNER; 778 break; 779 780 case P2PS_SETUP_GROUP_OWNER: 781 if (!cli_wpa_s) 782 conncap = P2PS_SETUP_CLIENT; 783 break; 784 785 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 786 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 787 if (cli_wpa_s) 788 conncap = P2PS_SETUP_GROUP_OWNER; 789 else { 790 u8 r; 791 792 if (os_get_random(&r, sizeof(r)) < 0 || 793 (r & 1)) 794 conncap = P2PS_SETUP_CLIENT; 795 else 796 conncap = P2PS_SETUP_GROUP_OWNER; 797 } 798 break; 799 800 default: 801 return P2PS_SETUP_NONE; 802 } 803 804 grp_owner: 805 if ((conncap & P2PS_SETUP_GROUP_OWNER) || 806 (!incoming && (conncap & P2PS_SETUP_NEW))) { 807 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group)) 808 conncap &= ~P2PS_SETUP_GROUP_OWNER; 809 810 s = wpas_p2p_get_persistent_go(wpa_s); 811 if (!s && !go_wpa_s && p2p_no_group_iface) { 812 p2p_set_intended_addr(wpa_s->global->p2p, 813 wpa_s->p2p_mgmt ? 814 wpa_s->parent->own_addr : 815 wpa_s->own_addr); 816 } else if (!s && !go_wpa_s) { 817 if (wpas_p2p_add_group_interface(wpa_s, 818 WPA_IF_P2P_GROUP) < 0) { 819 wpa_printf(MSG_ERROR, 820 "P2P: Failed to allocate a new interface for the group"); 821 return P2PS_SETUP_NONE; 822 } 823 wpa_s->global->pending_group_iface_for_p2ps = 1; 824 p2p_set_intended_addr(wpa_s->global->p2p, 825 wpa_s->pending_interface_addr); 826 } 827 } 828 829 return conncap; 830 } 831 832 833 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 834 enum p2p_group_removal_reason removal_reason) 835 { 836 struct wpa_ssid *ssid; 837 char *gtype; 838 const char *reason; 839 840 ssid = wpa_s->current_ssid; 841 if (ssid == NULL) { 842 /* 843 * The current SSID was not known, but there may still be a 844 * pending P2P group interface waiting for provisioning or a 845 * P2P group that is trying to reconnect. 846 */ 847 ssid = wpa_s->conf->ssid; 848 while (ssid) { 849 if (ssid->p2p_group && ssid->disabled != 2) 850 break; 851 ssid = ssid->next; 852 } 853 if (ssid == NULL && 854 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 855 { 856 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 857 "not found"); 858 return -1; 859 } 860 } 861 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 862 gtype = "GO"; 863 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 864 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 865 wpa_s->reassociate = 0; 866 wpa_s->disconnected = 1; 867 gtype = "client"; 868 } else 869 gtype = "GO"; 870 871 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 872 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 873 874 if (os_strcmp(gtype, "client") == 0) { 875 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 876 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal, 877 wpa_s, NULL)) { 878 wpa_printf(MSG_DEBUG, 879 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal"); 880 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE; 881 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, 882 wpa_s, NULL); 883 } 884 } 885 886 if (wpa_s->cross_connect_in_use) { 887 wpa_s->cross_connect_in_use = 0; 888 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 889 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 890 wpa_s->ifname, wpa_s->cross_connect_uplink); 891 } 892 switch (removal_reason) { 893 case P2P_GROUP_REMOVAL_REQUESTED: 894 reason = " reason=REQUESTED"; 895 break; 896 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 897 reason = " reason=FORMATION_FAILED"; 898 break; 899 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 900 reason = " reason=IDLE"; 901 break; 902 case P2P_GROUP_REMOVAL_UNAVAILABLE: 903 reason = " reason=UNAVAILABLE"; 904 break; 905 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 906 reason = " reason=GO_ENDING_SESSION"; 907 break; 908 case P2P_GROUP_REMOVAL_PSK_FAILURE: 909 reason = " reason=PSK_FAILURE"; 910 break; 911 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 912 reason = " reason=FREQ_CONFLICT"; 913 break; 914 default: 915 reason = ""; 916 break; 917 } 918 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 919 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 920 P2P_EVENT_GROUP_REMOVED "%s %s%s", 921 wpa_s->ifname, gtype, reason); 922 } 923 924 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 925 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 926 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 927 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 928 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 929 wpa_s->p2pdev, NULL) > 0) { 930 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 931 "timeout"); 932 wpa_s->p2p_in_provisioning = 0; 933 wpas_p2p_group_formation_failed(wpa_s, 1); 934 } 935 936 wpa_s->p2p_in_invitation = 0; 937 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 938 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL); 939 940 /* 941 * Make sure wait for the first client does not remain active after the 942 * group has been removed. 943 */ 944 wpa_s->global->p2p_go_wait_client.sec = 0; 945 946 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 947 struct wpa_global *global; 948 char *ifname; 949 enum wpa_driver_if_type type; 950 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 951 wpa_s->ifname); 952 global = wpa_s->global; 953 ifname = os_strdup(wpa_s->ifname); 954 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 955 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL); 956 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 957 wpa_s = global->ifaces; 958 if (wpa_s && ifname) 959 wpa_drv_if_remove(wpa_s, type, ifname); 960 os_free(ifname); 961 return 1; 962 } 963 964 /* 965 * The primary interface was used for P2P group operations, so 966 * need to reset its p2pdev. 967 */ 968 wpa_s->p2pdev = wpa_s->parent; 969 970 if (!wpa_s->p2p_go_group_formation_completed) { 971 wpa_s->global->p2p_group_formation = NULL; 972 wpa_s->p2p_in_provisioning = 0; 973 } 974 975 wpa_s->show_group_started = 0; 976 os_free(wpa_s->go_params); 977 wpa_s->go_params = NULL; 978 979 os_free(wpa_s->p2p_group_common_freqs); 980 wpa_s->p2p_group_common_freqs = NULL; 981 wpa_s->p2p_group_common_freqs_num = 0; 982 983 wpa_s->waiting_presence_resp = 0; 984 985 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 986 if (ssid && (ssid->p2p_group || 987 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 988 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 989 int id = ssid->id; 990 if (ssid == wpa_s->current_ssid) { 991 wpa_sm_set_config(wpa_s->wpa, NULL); 992 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 993 wpa_s->current_ssid = NULL; 994 } 995 /* 996 * Networks objects created during any P2P activities are not 997 * exposed out as they might/will confuse certain non-P2P aware 998 * applications since these network objects won't behave like 999 * regular ones. 1000 * 1001 * Likewise, we don't send out network removed signals for such 1002 * network objects. 1003 */ 1004 wpa_config_remove_network(wpa_s->conf, id); 1005 wpa_supplicant_clear_status(wpa_s); 1006 wpa_supplicant_cancel_sched_scan(wpa_s); 1007 } else { 1008 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 1009 "found"); 1010 } 1011 if (wpa_s->ap_iface) 1012 wpa_supplicant_ap_deinit(wpa_s); 1013 else 1014 wpa_drv_deinit_p2p_cli(wpa_s); 1015 1016 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1017 1018 return 0; 1019 } 1020 1021 1022 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 1023 u8 *go_dev_addr, 1024 const u8 *ssid, size_t ssid_len) 1025 { 1026 struct wpa_bss *bss; 1027 const u8 *bssid; 1028 struct wpabuf *p2p; 1029 u8 group_capab; 1030 const u8 *addr; 1031 1032 if (wpa_s->go_params) 1033 bssid = wpa_s->go_params->peer_interface_addr; 1034 else 1035 bssid = wpa_s->bssid; 1036 1037 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 1038 if (bss == NULL && wpa_s->go_params && 1039 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 1040 bss = wpa_bss_get_p2p_dev_addr( 1041 wpa_s, wpa_s->go_params->peer_device_addr); 1042 if (bss == NULL) { 1043 u8 iface_addr[ETH_ALEN]; 1044 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 1045 iface_addr) == 0) 1046 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 1047 } 1048 if (bss == NULL) { 1049 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1050 "group is persistent - BSS " MACSTR " not found", 1051 MAC2STR(bssid)); 1052 return 0; 1053 } 1054 1055 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1056 if (p2p == NULL) 1057 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 1058 P2P_IE_VENDOR_TYPE); 1059 if (p2p == NULL) { 1060 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1061 "group is persistent - BSS " MACSTR 1062 " did not include P2P IE", MAC2STR(bssid)); 1063 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 1064 (u8 *) (bss + 1), bss->ie_len); 1065 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 1066 ((u8 *) bss + 1) + bss->ie_len, 1067 bss->beacon_ie_len); 1068 return 0; 1069 } 1070 1071 group_capab = p2p_get_group_capab(p2p); 1072 addr = p2p_get_go_dev_addr(p2p); 1073 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 1074 "group_capab=0x%x", group_capab); 1075 if (addr) { 1076 os_memcpy(go_dev_addr, addr, ETH_ALEN); 1077 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 1078 MAC2STR(addr)); 1079 } else 1080 os_memset(go_dev_addr, 0, ETH_ALEN); 1081 wpabuf_free(p2p); 1082 1083 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 1084 "go_dev_addr=" MACSTR, 1085 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 1086 1087 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP); 1088 } 1089 1090 1091 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 1092 struct wpa_ssid *ssid, 1093 const u8 *go_dev_addr) 1094 { 1095 struct wpa_ssid *s; 1096 int changed = 0; 1097 1098 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 1099 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 1100 for (s = wpa_s->conf->ssid; s; s = s->next) { 1101 if (s->disabled == 2 && 1102 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 1103 s->ssid_len == ssid->ssid_len && 1104 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 1105 break; 1106 } 1107 1108 if (s) { 1109 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 1110 "entry"); 1111 if (ssid->passphrase && !s->passphrase) 1112 changed = 1; 1113 else if (ssid->passphrase && s->passphrase && 1114 os_strcmp(ssid->passphrase, s->passphrase) != 0) 1115 changed = 1; 1116 } else { 1117 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 1118 "entry"); 1119 changed = 1; 1120 s = wpa_config_add_network(wpa_s->conf); 1121 if (s == NULL) 1122 return -1; 1123 1124 /* 1125 * Instead of network_added we emit persistent_group_added 1126 * notification. Also to keep the defense checks in 1127 * persistent_group obj registration method, we set the 1128 * relevant flags in s to designate it as a persistent group. 1129 */ 1130 s->p2p_group = 1; 1131 s->p2p_persistent_group = 1; 1132 wpas_notify_persistent_group_added(wpa_s, s); 1133 wpa_config_set_network_defaults(s); 1134 } 1135 1136 s->p2p_group = 1; 1137 s->p2p_persistent_group = 1; 1138 s->disabled = 2; 1139 s->bssid_set = 1; 1140 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 1141 s->mode = ssid->mode; 1142 s->auth_alg = WPA_AUTH_ALG_OPEN; 1143 s->key_mgmt = WPA_KEY_MGMT_PSK; 1144 s->proto = WPA_PROTO_RSN; 1145 s->pbss = ssid->pbss; 1146 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 1147 s->export_keys = 1; 1148 if (ssid->passphrase) { 1149 os_free(s->passphrase); 1150 s->passphrase = os_strdup(ssid->passphrase); 1151 } 1152 if (ssid->psk_set) { 1153 s->psk_set = 1; 1154 os_memcpy(s->psk, ssid->psk, 32); 1155 } 1156 if (s->passphrase && !s->psk_set) 1157 wpa_config_update_psk(s); 1158 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 1159 os_free(s->ssid); 1160 s->ssid = os_malloc(ssid->ssid_len); 1161 } 1162 if (s->ssid) { 1163 s->ssid_len = ssid->ssid_len; 1164 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 1165 } 1166 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 1167 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 1168 wpa_s->global->add_psk = NULL; 1169 changed = 1; 1170 } 1171 1172 if (changed && wpa_s->conf->update_config && 1173 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 1174 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1175 } 1176 1177 return s->id; 1178 } 1179 1180 1181 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 1182 const u8 *addr) 1183 { 1184 struct wpa_ssid *ssid, *s; 1185 u8 *n; 1186 size_t i; 1187 int found = 0; 1188 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 1189 1190 ssid = wpa_s->current_ssid; 1191 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 1192 !ssid->p2p_persistent_group) 1193 return; 1194 1195 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 1196 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 1197 continue; 1198 1199 if (s->ssid_len == ssid->ssid_len && 1200 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 1201 break; 1202 } 1203 1204 if (s == NULL) 1205 return; 1206 1207 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 1208 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr, 1209 ETH_ALEN) != 0) 1210 continue; 1211 1212 if (i == s->num_p2p_clients - 1) 1213 return; /* already the most recent entry */ 1214 1215 /* move the entry to mark it most recent */ 1216 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 1217 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 1218 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 1219 os_memcpy(s->p2p_client_list + 1220 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr, 1221 ETH_ALEN); 1222 os_memset(s->p2p_client_list + 1223 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1224 0xff, ETH_ALEN); 1225 found = 1; 1226 break; 1227 } 1228 1229 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 1230 n = os_realloc_array(s->p2p_client_list, 1231 s->num_p2p_clients + 1, 2 * ETH_ALEN); 1232 if (n == NULL) 1233 return; 1234 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr, 1235 ETH_ALEN); 1236 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN, 1237 0xff, ETH_ALEN); 1238 s->p2p_client_list = n; 1239 s->num_p2p_clients++; 1240 } else if (!found && s->p2p_client_list) { 1241 /* Not enough room for an additional entry - drop the oldest 1242 * entry */ 1243 os_memmove(s->p2p_client_list, 1244 s->p2p_client_list + 2 * ETH_ALEN, 1245 (s->num_p2p_clients - 1) * 2 * ETH_ALEN); 1246 os_memcpy(s->p2p_client_list + 1247 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, 1248 addr, ETH_ALEN); 1249 os_memset(s->p2p_client_list + 1250 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1251 0xff, ETH_ALEN); 1252 } 1253 1254 if (p2p_wpa_s->conf->update_config && 1255 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 1256 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1257 } 1258 1259 1260 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s, 1261 int go, struct wpa_ssid *ssid, int freq, 1262 const u8 *psk, const char *passphrase, 1263 const u8 *go_dev_addr, int persistent, 1264 const char *extra) 1265 { 1266 const char *ssid_txt; 1267 char psk_txt[65]; 1268 1269 if (psk) 1270 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32); 1271 else 1272 psk_txt[0] = '\0'; 1273 1274 if (ssid) 1275 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 1276 else 1277 ssid_txt = ""; 1278 1279 if (passphrase && passphrase[0] == '\0') 1280 passphrase = NULL; 1281 1282 /* 1283 * Include PSK/passphrase only in the control interface message and 1284 * leave it out from the debug log entry. 1285 */ 1286 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO, 1287 P2P_EVENT_GROUP_STARTED 1288 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr=" 1289 MACSTR "%s%s", 1290 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1291 psk ? " psk=" : "", psk_txt, 1292 passphrase ? " passphrase=\"" : "", 1293 passphrase ? passphrase : "", 1294 passphrase ? "\"" : "", 1295 MAC2STR(go_dev_addr), 1296 persistent ? " [PERSISTENT]" : "", extra); 1297 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED 1298 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s", 1299 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1300 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "", 1301 extra); 1302 } 1303 1304 1305 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 1306 int success, int already_deleted) 1307 { 1308 struct wpa_ssid *ssid; 1309 int client; 1310 int persistent; 1311 u8 go_dev_addr[ETH_ALEN]; 1312 1313 /* 1314 * This callback is likely called for the main interface. Update wpa_s 1315 * to use the group interface if a new interface was created for the 1316 * group. 1317 */ 1318 if (wpa_s->global->p2p_group_formation) 1319 wpa_s = wpa_s->global->p2p_group_formation; 1320 if (wpa_s->p2p_go_group_formation_completed) { 1321 wpa_s->global->p2p_group_formation = NULL; 1322 wpa_s->p2p_in_provisioning = 0; 1323 } else if (wpa_s->p2p_in_provisioning && !success) { 1324 wpa_msg(wpa_s, MSG_DEBUG, 1325 "P2P: Stop provisioning state due to failure"); 1326 wpa_s->p2p_in_provisioning = 0; 1327 } 1328 wpa_s->p2p_in_invitation = 0; 1329 wpa_s->group_formation_reported = 1; 1330 1331 if (!success) { 1332 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1333 P2P_EVENT_GROUP_FORMATION_FAILURE); 1334 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1335 if (already_deleted) 1336 return; 1337 wpas_p2p_group_delete(wpa_s, 1338 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1339 return; 1340 } 1341 1342 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1343 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1344 1345 ssid = wpa_s->current_ssid; 1346 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1347 ssid->mode = WPAS_MODE_P2P_GO; 1348 p2p_group_notif_formation_done(wpa_s->p2p_group); 1349 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1350 } 1351 1352 persistent = 0; 1353 if (ssid) { 1354 client = ssid->mode == WPAS_MODE_INFRA; 1355 if (ssid->mode == WPAS_MODE_P2P_GO) { 1356 persistent = ssid->p2p_persistent_group; 1357 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1358 ETH_ALEN); 1359 } else 1360 persistent = wpas_p2p_persistent_group(wpa_s, 1361 go_dev_addr, 1362 ssid->ssid, 1363 ssid->ssid_len); 1364 } else { 1365 client = wpa_s->p2p_group_interface == 1366 P2P_GROUP_INTERFACE_CLIENT; 1367 os_memset(go_dev_addr, 0, ETH_ALEN); 1368 } 1369 1370 wpa_s->show_group_started = 0; 1371 if (client) { 1372 /* 1373 * Indicate event only after successfully completed 4-way 1374 * handshake, i.e., when the interface is ready for data 1375 * packets. 1376 */ 1377 wpa_s->show_group_started = 1; 1378 } else { 1379 wpas_p2p_group_started(wpa_s, 1, ssid, 1380 ssid ? ssid->frequency : 0, 1381 ssid && ssid->passphrase == NULL && 1382 ssid->psk_set ? ssid->psk : NULL, 1383 ssid ? ssid->passphrase : NULL, 1384 go_dev_addr, persistent, ""); 1385 wpas_p2p_cross_connect_setup(wpa_s); 1386 wpas_p2p_set_group_idle_timeout(wpa_s); 1387 } 1388 1389 if (persistent) 1390 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 1391 ssid, go_dev_addr); 1392 else { 1393 os_free(wpa_s->global->add_psk); 1394 wpa_s->global->add_psk = NULL; 1395 } 1396 1397 if (!client) { 1398 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL); 1399 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1400 } 1401 } 1402 1403 1404 struct send_action_work { 1405 unsigned int freq; 1406 u8 dst[ETH_ALEN]; 1407 u8 src[ETH_ALEN]; 1408 u8 bssid[ETH_ALEN]; 1409 size_t len; 1410 unsigned int wait_time; 1411 u8 buf[0]; 1412 }; 1413 1414 1415 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s) 1416 { 1417 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx; 1418 1419 wpa_printf(MSG_DEBUG, 1420 "P2P: Free Action frame radio work @%p (freq=%u dst=" 1421 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)", 1422 wpa_s->p2p_send_action_work, awork->freq, 1423 MAC2STR(awork->dst), MAC2STR(awork->src), 1424 MAC2STR(awork->bssid), awork->wait_time); 1425 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame", 1426 awork->buf, awork->len); 1427 os_free(awork); 1428 wpa_s->p2p_send_action_work->ctx = NULL; 1429 radio_work_done(wpa_s->p2p_send_action_work); 1430 wpa_s->p2p_send_action_work = NULL; 1431 } 1432 1433 1434 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1435 void *timeout_ctx) 1436 { 1437 struct wpa_supplicant *wpa_s = eloop_ctx; 1438 1439 if (!wpa_s->p2p_send_action_work) 1440 return; 1441 1442 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1443 wpas_p2p_free_send_action_work(wpa_s); 1444 } 1445 1446 1447 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1448 { 1449 if (wpa_s->p2p_send_action_work) { 1450 struct send_action_work *awork; 1451 1452 awork = wpa_s->p2p_send_action_work->ctx; 1453 wpa_printf(MSG_DEBUG, 1454 "P2P: Clear Action TX work @%p (wait_time=%u)", 1455 wpa_s->p2p_send_action_work, awork->wait_time); 1456 if (awork->wait_time == 0) { 1457 wpas_p2p_free_send_action_work(wpa_s); 1458 } else { 1459 /* 1460 * In theory, this should not be needed, but number of 1461 * places in the P2P code is still using non-zero wait 1462 * time for the last Action frame in the sequence and 1463 * some of these do not call send_action_done(). 1464 */ 1465 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1466 wpa_s, NULL); 1467 eloop_register_timeout( 1468 0, awork->wait_time * 1000, 1469 wpas_p2p_send_action_work_timeout, 1470 wpa_s, NULL); 1471 } 1472 } 1473 } 1474 1475 1476 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1477 unsigned int freq, 1478 const u8 *dst, const u8 *src, 1479 const u8 *bssid, 1480 const u8 *data, size_t data_len, 1481 enum offchannel_send_action_result 1482 result) 1483 { 1484 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1485 1486 wpas_p2p_action_tx_clear(wpa_s); 1487 1488 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1489 return; 1490 1491 switch (result) { 1492 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1493 res = P2P_SEND_ACTION_SUCCESS; 1494 break; 1495 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1496 res = P2P_SEND_ACTION_NO_ACK; 1497 break; 1498 case OFFCHANNEL_SEND_ACTION_FAILED: 1499 res = P2P_SEND_ACTION_FAILED; 1500 break; 1501 } 1502 1503 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1504 1505 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1506 wpa_s->pending_pd_before_join && 1507 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1508 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1509 wpa_s->p2p_fallback_to_go_neg) { 1510 wpa_s->pending_pd_before_join = 0; 1511 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1512 "during p2p_connect-auto"); 1513 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1514 P2P_EVENT_FALLBACK_TO_GO_NEG 1515 "reason=no-ACK-to-PD-Req"); 1516 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1517 return; 1518 } 1519 } 1520 1521 1522 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1523 { 1524 struct wpa_supplicant *wpa_s = work->wpa_s; 1525 struct send_action_work *awork = work->ctx; 1526 1527 if (deinit) { 1528 if (work->started) { 1529 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1530 wpa_s, NULL); 1531 wpa_s->p2p_send_action_work = NULL; 1532 offchannel_send_action_done(wpa_s); 1533 } 1534 os_free(awork); 1535 return; 1536 } 1537 1538 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1539 awork->bssid, awork->buf, awork->len, 1540 awork->wait_time, 1541 wpas_p2p_send_action_tx_status, 1) < 0) { 1542 os_free(awork); 1543 radio_work_done(work); 1544 return; 1545 } 1546 wpa_s->p2p_send_action_work = work; 1547 } 1548 1549 1550 static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1551 unsigned int freq, const u8 *dst, 1552 const u8 *src, const u8 *bssid, const u8 *buf, 1553 size_t len, unsigned int wait_time) 1554 { 1555 struct send_action_work *awork; 1556 1557 if (wpa_s->p2p_send_action_work) { 1558 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1559 return -1; 1560 } 1561 1562 awork = os_zalloc(sizeof(*awork) + len); 1563 if (awork == NULL) 1564 return -1; 1565 1566 awork->freq = freq; 1567 os_memcpy(awork->dst, dst, ETH_ALEN); 1568 os_memcpy(awork->src, src, ETH_ALEN); 1569 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1570 awork->len = len; 1571 awork->wait_time = wait_time; 1572 os_memcpy(awork->buf, buf, len); 1573 1574 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1575 wpas_send_action_cb, awork) < 0) { 1576 os_free(awork); 1577 return -1; 1578 } 1579 1580 return 0; 1581 } 1582 1583 1584 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1585 const u8 *src, const u8 *bssid, const u8 *buf, 1586 size_t len, unsigned int wait_time) 1587 { 1588 struct wpa_supplicant *wpa_s = ctx; 1589 int listen_freq = -1, send_freq = -1; 1590 1591 if (wpa_s->p2p_listen_work) 1592 listen_freq = wpa_s->p2p_listen_work->freq; 1593 if (wpa_s->p2p_send_action_work) 1594 send_freq = wpa_s->p2p_send_action_work->freq; 1595 if (listen_freq != (int) freq && send_freq != (int) freq) { 1596 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1597 listen_freq, send_freq); 1598 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1599 len, wait_time); 1600 } 1601 1602 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1603 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1604 wait_time, 1605 wpas_p2p_send_action_tx_status, 1); 1606 } 1607 1608 1609 static void wpas_send_action_done(void *ctx) 1610 { 1611 struct wpa_supplicant *wpa_s = ctx; 1612 1613 if (wpa_s->p2p_send_action_work) { 1614 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1615 wpa_s, NULL); 1616 os_free(wpa_s->p2p_send_action_work->ctx); 1617 radio_work_done(wpa_s->p2p_send_action_work); 1618 wpa_s->p2p_send_action_work = NULL; 1619 } 1620 1621 offchannel_send_action_done(wpa_s); 1622 } 1623 1624 1625 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1626 struct p2p_go_neg_results *params) 1627 { 1628 if (wpa_s->go_params == NULL) { 1629 wpa_s->go_params = os_malloc(sizeof(*params)); 1630 if (wpa_s->go_params == NULL) 1631 return -1; 1632 } 1633 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1634 return 0; 1635 } 1636 1637 1638 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1639 struct p2p_go_neg_results *res) 1640 { 1641 wpa_s->group_formation_reported = 0; 1642 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1643 " dev_addr " MACSTR " wps_method %d", 1644 MAC2STR(res->peer_interface_addr), 1645 MAC2STR(res->peer_device_addr), res->wps_method); 1646 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1647 res->ssid, res->ssid_len); 1648 wpa_supplicant_ap_deinit(wpa_s); 1649 wpas_copy_go_neg_results(wpa_s, res); 1650 if (res->wps_method == WPS_PBC) { 1651 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1652 #ifdef CONFIG_WPS_NFC 1653 } else if (res->wps_method == WPS_NFC) { 1654 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1655 res->peer_interface_addr, 1656 wpa_s->p2pdev->p2p_oob_dev_pw, 1657 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1, 1658 wpa_s->p2pdev->p2p_oob_dev_pw_id == 1659 DEV_PW_NFC_CONNECTION_HANDOVER ? 1660 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : 1661 NULL, 1662 NULL, 0, 0); 1663 #endif /* CONFIG_WPS_NFC */ 1664 } else { 1665 u16 dev_pw_id = DEV_PW_DEFAULT; 1666 if (wpa_s->p2p_wps_method == WPS_P2PS) 1667 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1668 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1669 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1670 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1671 wpa_s->p2p_pin, 1, dev_pw_id); 1672 } 1673 } 1674 1675 1676 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1677 struct wpa_ssid *ssid) 1678 { 1679 struct wpa_ssid *persistent; 1680 struct psk_list_entry *psk; 1681 struct hostapd_data *hapd; 1682 1683 if (!wpa_s->ap_iface) 1684 return; 1685 1686 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 1687 ssid->ssid_len); 1688 if (persistent == NULL) 1689 return; 1690 1691 hapd = wpa_s->ap_iface->bss[0]; 1692 1693 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1694 list) { 1695 struct hostapd_wpa_psk *hpsk; 1696 1697 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1698 MACSTR " psk=%d", 1699 MAC2STR(psk->addr), psk->p2p); 1700 hpsk = os_zalloc(sizeof(*hpsk)); 1701 if (hpsk == NULL) 1702 break; 1703 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1704 if (psk->p2p) 1705 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1706 else 1707 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1708 hpsk->next = hapd->conf->ssid.wpa_psk; 1709 hapd->conf->ssid.wpa_psk = hpsk; 1710 } 1711 } 1712 1713 1714 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1715 { 1716 unsigned int i; 1717 1718 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):", 1719 wpa_s->p2p_group_common_freqs_num); 1720 1721 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) 1722 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d", 1723 i, wpa_s->p2p_group_common_freqs[i]); 1724 } 1725 1726 1727 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1728 struct p2p_go_neg_results *params) 1729 { 1730 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1731 1732 wpa_s->p2p_group_common_freqs_num = 0; 1733 os_free(wpa_s->p2p_group_common_freqs); 1734 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1735 if (!wpa_s->p2p_group_common_freqs) 1736 return; 1737 1738 for (i = 0; i < len; i++) { 1739 if (!wpa_s->go_params->freq_list[i]) 1740 break; 1741 wpa_s->p2p_group_common_freqs[i] = 1742 wpa_s->go_params->freq_list[i]; 1743 } 1744 wpa_s->p2p_group_common_freqs_num = i; 1745 } 1746 1747 1748 static void p2p_config_write(struct wpa_supplicant *wpa_s) 1749 { 1750 #ifndef CONFIG_NO_CONFIG_WRITE 1751 if (wpa_s->p2pdev->conf->update_config && 1752 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 1753 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1754 #endif /* CONFIG_NO_CONFIG_WRITE */ 1755 } 1756 1757 1758 static void p2p_go_configured(void *ctx, void *data) 1759 { 1760 struct wpa_supplicant *wpa_s = ctx; 1761 struct p2p_go_neg_results *params = data; 1762 struct wpa_ssid *ssid; 1763 1764 wpa_s->ap_configured_cb = NULL; 1765 wpa_s->ap_configured_cb_ctx = NULL; 1766 wpa_s->ap_configured_cb_data = NULL; 1767 if (!wpa_s->go_params) { 1768 wpa_printf(MSG_ERROR, 1769 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL"); 1770 return; 1771 } 1772 1773 p2p_go_save_group_common_freqs(wpa_s, params); 1774 p2p_go_dump_common_freqs(wpa_s); 1775 1776 ssid = wpa_s->current_ssid; 1777 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1778 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1779 if (wpa_s->global->p2p_group_formation == wpa_s) 1780 wpa_s->global->p2p_group_formation = NULL; 1781 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1782 params->passphrase[0] == '\0' ? 1783 params->psk : NULL, 1784 params->passphrase, 1785 wpa_s->global->p2p_dev_addr, 1786 params->persistent_group, ""); 1787 wpa_s->group_formation_reported = 1; 1788 1789 if (wpa_s->p2pdev->p2ps_method_config_any) { 1790 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) { 1791 wpa_dbg(wpa_s, MSG_DEBUG, 1792 "P2PS: Setting default PIN for ANY"); 1793 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1794 "12345670", NULL, 0, 1795 0); 1796 } else { 1797 wpa_dbg(wpa_s, MSG_DEBUG, 1798 "P2PS: Setting default PIN for " MACSTR, 1799 MAC2STR(wpa_s->p2pdev->p2ps_join_addr)); 1800 wpa_supplicant_ap_wps_pin( 1801 wpa_s, wpa_s->p2pdev->p2ps_join_addr, 1802 "12345670", NULL, 0, 0); 1803 } 1804 wpa_s->p2pdev->p2ps_method_config_any = 0; 1805 } 1806 1807 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1808 if (params->persistent_group) { 1809 wpas_p2p_store_persistent_group( 1810 wpa_s->p2pdev, ssid, 1811 wpa_s->global->p2p_dev_addr); 1812 wpas_p2p_add_psk_list(wpa_s, ssid); 1813 } 1814 1815 wpas_notify_p2p_group_started(wpa_s, ssid, 1816 params->persistent_group, 0, 1817 NULL); 1818 wpas_p2p_cross_connect_setup(wpa_s); 1819 wpas_p2p_set_group_idle_timeout(wpa_s); 1820 1821 if (wpa_s->p2p_first_connection_timeout) { 1822 wpa_dbg(wpa_s, MSG_DEBUG, 1823 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1824 wpa_s->p2p_first_connection_timeout); 1825 wpa_s->p2p_go_group_formation_completed = 0; 1826 wpa_s->global->p2p_group_formation = wpa_s; 1827 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1828 wpa_s->p2pdev, NULL); 1829 eloop_register_timeout( 1830 wpa_s->p2p_first_connection_timeout, 0, 1831 wpas_p2p_group_formation_timeout, 1832 wpa_s->p2pdev, NULL); 1833 } 1834 1835 return; 1836 } 1837 1838 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1839 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1840 params->peer_interface_addr)) { 1841 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1842 "filtering"); 1843 return; 1844 } 1845 if (params->wps_method == WPS_PBC) { 1846 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1847 params->peer_device_addr); 1848 #ifdef CONFIG_WPS_NFC 1849 } else if (params->wps_method == WPS_NFC) { 1850 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 1851 DEV_PW_NFC_CONNECTION_HANDOVER && 1852 !wpa_s->p2pdev->p2p_oob_dev_pw) { 1853 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1854 return; 1855 } 1856 wpas_ap_wps_add_nfc_pw( 1857 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 1858 wpa_s->p2pdev->p2p_oob_dev_pw, 1859 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 1860 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 1861 #endif /* CONFIG_WPS_NFC */ 1862 } else if (wpa_s->p2p_pin[0]) 1863 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1864 wpa_s->p2p_pin, NULL, 0, 0); 1865 os_free(wpa_s->go_params); 1866 wpa_s->go_params = NULL; 1867 } 1868 1869 1870 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1871 struct p2p_go_neg_results *params, 1872 int group_formation) 1873 { 1874 struct wpa_ssid *ssid; 1875 1876 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1877 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1878 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1879 "results"); 1880 return; 1881 } 1882 1883 ssid = wpa_config_add_network(wpa_s->conf); 1884 if (ssid == NULL) { 1885 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1886 return; 1887 } 1888 1889 wpa_s->show_group_started = 0; 1890 wpa_s->p2p_go_group_formation_completed = 0; 1891 wpa_s->group_formation_reported = 0; 1892 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1893 1894 wpa_config_set_network_defaults(ssid); 1895 ssid->temporary = 1; 1896 ssid->p2p_group = 1; 1897 ssid->p2p_persistent_group = !!params->persistent_group; 1898 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1899 WPAS_MODE_P2P_GO; 1900 ssid->frequency = params->freq; 1901 ssid->ht40 = params->ht40; 1902 ssid->vht = params->vht; 1903 ssid->max_oper_chwidth = params->max_oper_chwidth; 1904 ssid->vht_center_freq2 = params->vht_center_freq2; 1905 ssid->ssid = os_zalloc(params->ssid_len + 1); 1906 if (ssid->ssid) { 1907 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1908 ssid->ssid_len = params->ssid_len; 1909 } 1910 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1911 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1912 ssid->proto = WPA_PROTO_RSN; 1913 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1914 ssid->group_cipher = WPA_CIPHER_CCMP; 1915 if (params->freq > 56160) { 1916 /* 1917 * Enable GCMP instead of CCMP as pairwise_cipher and 1918 * group_cipher in 60 GHz. 1919 */ 1920 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1921 ssid->group_cipher = WPA_CIPHER_GCMP; 1922 /* P2P GO in 60 GHz is always a PCP (PBSS) */ 1923 ssid->pbss = 1; 1924 } 1925 if (os_strlen(params->passphrase) > 0) { 1926 ssid->passphrase = os_strdup(params->passphrase); 1927 if (ssid->passphrase == NULL) { 1928 wpa_msg_global(wpa_s, MSG_ERROR, 1929 "P2P: Failed to copy passphrase for GO"); 1930 wpa_config_remove_network(wpa_s->conf, ssid->id); 1931 return; 1932 } 1933 } else 1934 ssid->passphrase = NULL; 1935 ssid->psk_set = params->psk_set; 1936 if (ssid->psk_set) 1937 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1938 else if (ssid->passphrase) 1939 wpa_config_update_psk(ssid); 1940 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity; 1941 1942 wpa_s->ap_configured_cb = p2p_go_configured; 1943 wpa_s->ap_configured_cb_ctx = wpa_s; 1944 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1945 wpa_s->scan_req = NORMAL_SCAN_REQ; 1946 wpa_s->connect_without_scan = ssid; 1947 wpa_s->reassociate = 1; 1948 wpa_s->disconnected = 0; 1949 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1950 "start GO)"); 1951 wpa_supplicant_req_scan(wpa_s, 0, 0); 1952 } 1953 1954 1955 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1956 const struct wpa_supplicant *src) 1957 { 1958 struct wpa_config *d; 1959 const struct wpa_config *s; 1960 1961 d = dst->conf; 1962 s = src->conf; 1963 1964 #define C(n) \ 1965 do { \ 1966 if (s->n && !d->n) \ 1967 d->n = os_strdup(s->n); \ 1968 } while (0) 1969 1970 C(device_name); 1971 C(manufacturer); 1972 C(model_name); 1973 C(model_number); 1974 C(serial_number); 1975 C(config_methods); 1976 #undef C 1977 1978 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1979 os_memcpy(d->sec_device_type, s->sec_device_type, 1980 sizeof(d->sec_device_type)); 1981 d->num_sec_device_types = s->num_sec_device_types; 1982 1983 d->p2p_group_idle = s->p2p_group_idle; 1984 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 1985 d->p2p_intra_bss = s->p2p_intra_bss; 1986 d->persistent_reconnect = s->persistent_reconnect; 1987 d->max_num_sta = s->max_num_sta; 1988 d->pbc_in_m1 = s->pbc_in_m1; 1989 d->ignore_old_scan_res = s->ignore_old_scan_res; 1990 d->beacon_int = s->beacon_int; 1991 d->dtim_period = s->dtim_period; 1992 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 1993 d->disassoc_low_ack = s->disassoc_low_ack; 1994 d->disable_scan_offload = s->disable_scan_offload; 1995 d->passive_scan = s->passive_scan; 1996 1997 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey && 1998 !d->wps_nfc_pw_from_config) { 1999 wpabuf_free(d->wps_nfc_dh_privkey); 2000 wpabuf_free(d->wps_nfc_dh_pubkey); 2001 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 2002 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 2003 } 2004 d->p2p_cli_probe = s->p2p_cli_probe; 2005 d->go_interworking = s->go_interworking; 2006 d->go_access_network_type = s->go_access_network_type; 2007 d->go_internet = s->go_internet; 2008 d->go_venue_group = s->go_venue_group; 2009 d->go_venue_type = s->go_venue_type; 2010 } 2011 2012 2013 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 2014 char *ifname, size_t len) 2015 { 2016 char *ifname_ptr = wpa_s->ifname; 2017 2018 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 2019 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 2020 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 2021 } 2022 2023 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 2024 if (os_strlen(ifname) >= IFNAMSIZ && 2025 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 2026 int res; 2027 2028 /* Try to avoid going over the IFNAMSIZ length limit */ 2029 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 2030 if (os_snprintf_error(len, res) && len) 2031 ifname[len - 1] = '\0'; 2032 } 2033 } 2034 2035 2036 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 2037 enum wpa_driver_if_type type) 2038 { 2039 char ifname[120], force_ifname[120]; 2040 2041 if (wpa_s->pending_interface_name[0]) { 2042 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 2043 "- skip creation of a new one"); 2044 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 2045 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 2046 "unknown?! ifname='%s'", 2047 wpa_s->pending_interface_name); 2048 return -1; 2049 } 2050 return 0; 2051 } 2052 2053 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 2054 force_ifname[0] = '\0'; 2055 2056 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 2057 ifname); 2058 wpa_s->p2p_group_idx++; 2059 2060 wpa_s->pending_interface_type = type; 2061 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 2062 wpa_s->pending_interface_addr, NULL) < 0) { 2063 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 2064 "interface"); 2065 return -1; 2066 } 2067 2068 if (force_ifname[0]) { 2069 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 2070 force_ifname); 2071 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 2072 sizeof(wpa_s->pending_interface_name)); 2073 } else 2074 os_strlcpy(wpa_s->pending_interface_name, ifname, 2075 sizeof(wpa_s->pending_interface_name)); 2076 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 2077 MACSTR, wpa_s->pending_interface_name, 2078 MAC2STR(wpa_s->pending_interface_addr)); 2079 2080 return 0; 2081 } 2082 2083 2084 static void wpas_p2p_remove_pending_group_interface( 2085 struct wpa_supplicant *wpa_s) 2086 { 2087 if (!wpa_s->pending_interface_name[0] || 2088 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2089 return; /* No pending virtual interface */ 2090 2091 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2092 wpa_s->pending_interface_name); 2093 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2094 wpa_s->pending_interface_name); 2095 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2096 wpa_s->pending_interface_name[0] = '\0'; 2097 wpa_s->global->pending_group_iface_for_p2ps = 0; 2098 } 2099 2100 2101 static struct wpa_supplicant * 2102 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2103 { 2104 struct wpa_interface iface; 2105 struct wpa_supplicant *group_wpa_s; 2106 2107 if (!wpa_s->pending_interface_name[0]) { 2108 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2109 if (!wpas_p2p_create_iface(wpa_s)) 2110 return NULL; 2111 /* 2112 * Something has forced us to remove the pending interface; try 2113 * to create a new one and hope for the best that we will get 2114 * the same local address. 2115 */ 2116 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2117 WPA_IF_P2P_CLIENT) < 0) 2118 return NULL; 2119 } 2120 2121 os_memset(&iface, 0, sizeof(iface)); 2122 iface.ifname = wpa_s->pending_interface_name; 2123 iface.driver = wpa_s->driver->name; 2124 if (wpa_s->conf->ctrl_interface == NULL && 2125 wpa_s->parent != wpa_s && 2126 wpa_s->p2p_mgmt && 2127 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2128 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2129 else 2130 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2131 iface.driver_param = wpa_s->conf->driver_param; 2132 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2133 if (group_wpa_s == NULL) { 2134 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2135 "wpa_supplicant interface"); 2136 return NULL; 2137 } 2138 wpa_s->pending_interface_name[0] = '\0'; 2139 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2140 P2P_GROUP_INTERFACE_CLIENT; 2141 wpa_s->global->p2p_group_formation = group_wpa_s; 2142 wpa_s->global->pending_group_iface_for_p2ps = 0; 2143 2144 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2145 2146 return group_wpa_s; 2147 } 2148 2149 2150 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2151 void *timeout_ctx) 2152 { 2153 struct wpa_supplicant *wpa_s = eloop_ctx; 2154 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2155 wpas_p2p_group_formation_failed(wpa_s, 0); 2156 } 2157 2158 2159 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2160 int already_deleted) 2161 { 2162 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2163 wpa_s->p2pdev, NULL); 2164 if (wpa_s->global->p2p) 2165 p2p_group_formation_failed(wpa_s->global->p2p); 2166 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2167 } 2168 2169 2170 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2171 { 2172 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2173 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2174 wpa_s->p2pdev, NULL); 2175 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2176 wpa_s->p2pdev, NULL); 2177 wpa_s->global->p2p_fail_on_wps_complete = 0; 2178 } 2179 2180 2181 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2182 { 2183 if (wpa_s->global->p2p_group_formation != wpa_s) 2184 return; 2185 /* Speed up group formation timeout since this cannot succeed */ 2186 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2187 wpa_s->p2pdev, NULL); 2188 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2189 wpa_s->p2pdev, NULL); 2190 } 2191 2192 2193 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2194 { 2195 struct wpa_supplicant *wpa_s = ctx; 2196 struct wpa_supplicant *group_wpa_s; 2197 2198 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2199 wpa_drv_cancel_remain_on_channel(wpa_s); 2200 wpa_s->off_channel_freq = 0; 2201 wpa_s->roc_waiting_drv_freq = 0; 2202 } 2203 2204 if (res->status) { 2205 wpa_msg_global(wpa_s, MSG_INFO, 2206 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2207 res->status); 2208 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2209 wpas_p2p_remove_pending_group_interface(wpa_s); 2210 return; 2211 } 2212 2213 if (!res->role_go) { 2214 /* Inform driver of the operating channel of GO. */ 2215 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2216 } 2217 2218 if (wpa_s->p2p_go_ht40) 2219 res->ht40 = 1; 2220 if (wpa_s->p2p_go_vht) 2221 res->vht = 1; 2222 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2223 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2224 2225 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2226 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2227 " wps_method=%s", 2228 res->role_go ? "GO" : "client", res->freq, res->ht40, 2229 MAC2STR(res->peer_device_addr), 2230 MAC2STR(res->peer_interface_addr), 2231 p2p_wps_method_text(res->wps_method)); 2232 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2233 2234 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2235 struct wpa_ssid *ssid; 2236 ssid = wpa_config_get_network(wpa_s->conf, 2237 wpa_s->p2p_persistent_id); 2238 if (ssid && ssid->disabled == 2 && 2239 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2240 size_t len = os_strlen(ssid->passphrase); 2241 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2242 "on requested persistent group"); 2243 os_memcpy(res->passphrase, ssid->passphrase, len); 2244 res->passphrase[len] = '\0'; 2245 } 2246 } 2247 2248 if (wpa_s->create_p2p_iface) { 2249 group_wpa_s = 2250 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2251 if (group_wpa_s == NULL) { 2252 wpas_p2p_remove_pending_group_interface(wpa_s); 2253 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2254 wpa_s, NULL); 2255 wpas_p2p_group_formation_failed(wpa_s, 1); 2256 return; 2257 } 2258 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2259 wpa_s->pending_interface_name[0] = '\0'; 2260 } else { 2261 group_wpa_s = wpa_s->parent; 2262 wpa_s->global->p2p_group_formation = group_wpa_s; 2263 if (group_wpa_s != wpa_s) 2264 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2265 } 2266 2267 group_wpa_s->p2p_in_provisioning = 1; 2268 group_wpa_s->p2pdev = wpa_s; 2269 if (group_wpa_s != wpa_s) { 2270 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2271 sizeof(group_wpa_s->p2p_pin)); 2272 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2273 } 2274 if (res->role_go) { 2275 wpas_start_wps_go(group_wpa_s, res, 1); 2276 } else { 2277 os_get_reltime(&group_wpa_s->scan_min_time); 2278 wpas_start_wps_enrollee(group_wpa_s, res); 2279 } 2280 2281 wpa_s->p2p_long_listen = 0; 2282 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2283 2284 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2285 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2286 (res->peer_config_timeout % 100) * 10000, 2287 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2288 } 2289 2290 2291 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2292 u8 go_intent) 2293 { 2294 struct wpa_supplicant *wpa_s = ctx; 2295 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2296 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2297 dev_passwd_id, go_intent); 2298 2299 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2300 } 2301 2302 2303 static void wpas_dev_found(void *ctx, const u8 *addr, 2304 const struct p2p_peer_info *info, 2305 int new_device) 2306 { 2307 u8 *wfd_dev_info = NULL; 2308 u8 wfd_dev_info_len = 0; 2309 #ifndef CONFIG_NO_STDOUT_DEBUG 2310 struct wpa_supplicant *wpa_s = ctx; 2311 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2312 char *wfd_dev_info_hex = NULL; 2313 2314 #ifdef CONFIG_WIFI_DISPLAY 2315 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2316 WFD_SUBELEM_DEVICE_INFO); 2317 if (wfd_dev_info_hex) { 2318 wfd_dev_info_len = strlen(wfd_dev_info_hex) / 2; 2319 wfd_dev_info = os_zalloc(wfd_dev_info_len); 2320 // Only used for notification, so not handling error. 2321 hexstr2bin(wfd_dev_info_hex, wfd_dev_info, wfd_dev_info_len); 2322 } 2323 #endif /* CONFIG_WIFI_DISPLAY */ 2324 2325 if (info->p2ps_instance) { 2326 char str[256]; 2327 const u8 *buf = wpabuf_head(info->p2ps_instance); 2328 size_t len = wpabuf_len(info->p2ps_instance); 2329 2330 while (len) { 2331 u32 id; 2332 u16 methods; 2333 u8 str_len; 2334 2335 if (len < 4 + 2 + 1) 2336 break; 2337 id = WPA_GET_LE32(buf); 2338 buf += sizeof(u32); 2339 methods = WPA_GET_BE16(buf); 2340 buf += sizeof(u16); 2341 str_len = *buf++; 2342 if (str_len > len - 4 - 2 - 1) 2343 break; 2344 os_memcpy(str, buf, str_len); 2345 str[str_len] = '\0'; 2346 buf += str_len; 2347 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2348 2349 wpa_msg_global(wpa_s, MSG_INFO, 2350 P2P_EVENT_DEVICE_FOUND MACSTR 2351 " p2p_dev_addr=" MACSTR 2352 " pri_dev_type=%s name='%s'" 2353 " config_methods=0x%x" 2354 " dev_capab=0x%x" 2355 " group_capab=0x%x" 2356 " adv_id=%x asp_svc=%s%s", 2357 MAC2STR(addr), 2358 MAC2STR(info->p2p_device_addr), 2359 wps_dev_type_bin2str( 2360 info->pri_dev_type, 2361 devtype, sizeof(devtype)), 2362 info->device_name, methods, 2363 info->dev_capab, info->group_capab, 2364 id, str, 2365 info->vendor_elems ? 2366 " vendor_elems=1" : ""); 2367 } 2368 goto done; 2369 } 2370 2371 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2372 " p2p_dev_addr=" MACSTR 2373 " pri_dev_type=%s name='%s' config_methods=0x%x " 2374 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2375 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2376 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2377 sizeof(devtype)), 2378 info->device_name, info->config_methods, 2379 info->dev_capab, info->group_capab, 2380 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2381 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2382 info->vendor_elems ? " vendor_elems=1" : "", 2383 new_device); 2384 2385 done: 2386 os_free(wfd_dev_info_hex); 2387 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2388 2389 wpas_notify_p2p_device_found(ctx, addr, info, wfd_dev_info, 2390 wfd_dev_info_len, new_device); 2391 os_free(wfd_dev_info); 2392 } 2393 2394 2395 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2396 { 2397 struct wpa_supplicant *wpa_s = ctx; 2398 2399 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2400 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2401 2402 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2403 } 2404 2405 2406 static void wpas_find_stopped(void *ctx) 2407 { 2408 struct wpa_supplicant *wpa_s = ctx; 2409 2410 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0) 2411 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed"); 2412 2413 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2414 wpas_notify_p2p_find_stopped(wpa_s); 2415 } 2416 2417 2418 struct wpas_p2p_listen_work { 2419 unsigned int freq; 2420 unsigned int duration; 2421 struct wpabuf *probe_resp_ie; 2422 }; 2423 2424 2425 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2426 { 2427 if (lwork == NULL) 2428 return; 2429 wpabuf_free(lwork->probe_resp_ie); 2430 os_free(lwork); 2431 } 2432 2433 2434 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2435 { 2436 struct wpas_p2p_listen_work *lwork; 2437 2438 if (!wpa_s->p2p_listen_work) 2439 return; 2440 2441 lwork = wpa_s->p2p_listen_work->ctx; 2442 wpas_p2p_listen_work_free(lwork); 2443 radio_work_done(wpa_s->p2p_listen_work); 2444 wpa_s->p2p_listen_work = NULL; 2445 } 2446 2447 2448 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2449 { 2450 struct wpa_supplicant *wpa_s = work->wpa_s; 2451 struct wpas_p2p_listen_work *lwork = work->ctx; 2452 unsigned int duration; 2453 2454 if (deinit) { 2455 if (work->started) { 2456 wpa_s->p2p_listen_work = NULL; 2457 wpas_stop_listen(wpa_s); 2458 } 2459 wpas_p2p_listen_work_free(lwork); 2460 return; 2461 } 2462 2463 wpa_s->p2p_listen_work = work; 2464 2465 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2466 2467 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2468 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2469 "report received Probe Request frames"); 2470 wpas_p2p_listen_work_done(wpa_s); 2471 return; 2472 } 2473 2474 wpa_s->pending_listen_freq = lwork->freq; 2475 wpa_s->pending_listen_duration = lwork->duration; 2476 2477 duration = lwork->duration; 2478 #ifdef CONFIG_TESTING_OPTIONS 2479 if (wpa_s->extra_roc_dur) { 2480 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2481 duration, duration + wpa_s->extra_roc_dur); 2482 duration += wpa_s->extra_roc_dur; 2483 } 2484 #endif /* CONFIG_TESTING_OPTIONS */ 2485 2486 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2487 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2488 "to remain on channel (%u MHz) for Listen " 2489 "state", lwork->freq); 2490 wpas_p2p_listen_work_done(wpa_s); 2491 wpa_s->pending_listen_freq = 0; 2492 return; 2493 } 2494 wpa_s->off_channel_freq = 0; 2495 wpa_s->roc_waiting_drv_freq = lwork->freq; 2496 } 2497 2498 2499 static int wpas_start_listen(void *ctx, unsigned int freq, 2500 unsigned int duration, 2501 const struct wpabuf *probe_resp_ie) 2502 { 2503 struct wpa_supplicant *wpa_s = ctx; 2504 struct wpas_p2p_listen_work *lwork; 2505 2506 if (wpa_s->p2p_listen_work) { 2507 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2508 return -1; 2509 } 2510 2511 lwork = os_zalloc(sizeof(*lwork)); 2512 if (lwork == NULL) 2513 return -1; 2514 lwork->freq = freq; 2515 lwork->duration = duration; 2516 if (probe_resp_ie) { 2517 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2518 if (lwork->probe_resp_ie == NULL) { 2519 wpas_p2p_listen_work_free(lwork); 2520 return -1; 2521 } 2522 } 2523 2524 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2525 lwork) < 0) { 2526 wpas_p2p_listen_work_free(lwork); 2527 return -1; 2528 } 2529 2530 return 0; 2531 } 2532 2533 2534 static void wpas_stop_listen(void *ctx) 2535 { 2536 struct wpa_supplicant *wpa_s = ctx; 2537 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2538 wpa_drv_cancel_remain_on_channel(wpa_s); 2539 wpa_s->off_channel_freq = 0; 2540 wpa_s->roc_waiting_drv_freq = 0; 2541 } 2542 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2543 2544 /* 2545 * Don't cancel Probe Request RX reporting for a connected P2P Client 2546 * handling Probe Request frames. 2547 */ 2548 if (!wpa_s->p2p_cli_probe) 2549 wpa_drv_probe_req_report(wpa_s, 0); 2550 2551 wpas_p2p_listen_work_done(wpa_s); 2552 } 2553 2554 2555 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2556 unsigned int freq) 2557 { 2558 struct wpa_supplicant *wpa_s = ctx; 2559 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2560 freq); 2561 } 2562 2563 2564 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2565 const u8 *peer, const char *params, 2566 unsigned int generated_pin) 2567 { 2568 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2569 " %08d%s", MAC2STR(peer), generated_pin, params); 2570 } 2571 2572 2573 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2574 const u8 *peer, const char *params) 2575 { 2576 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2577 "%s", MAC2STR(peer), params); 2578 } 2579 2580 2581 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2582 const u8 *dev_addr, const u8 *pri_dev_type, 2583 const char *dev_name, u16 supp_config_methods, 2584 u8 dev_capab, u8 group_capab, const u8 *group_id, 2585 size_t group_id_len) 2586 { 2587 struct wpa_supplicant *wpa_s = ctx; 2588 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2589 char params[300]; 2590 u8 empty_dev_type[8]; 2591 unsigned int generated_pin = 0; 2592 struct wpa_supplicant *group = NULL; 2593 int res; 2594 2595 if (group_id) { 2596 for (group = wpa_s->global->ifaces; group; group = group->next) 2597 { 2598 struct wpa_ssid *s = group->current_ssid; 2599 if (s != NULL && 2600 s->mode == WPAS_MODE_P2P_GO && 2601 group_id_len - ETH_ALEN == s->ssid_len && 2602 os_memcmp(group_id + ETH_ALEN, s->ssid, 2603 s->ssid_len) == 0) 2604 break; 2605 } 2606 } 2607 2608 if (pri_dev_type == NULL) { 2609 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2610 pri_dev_type = empty_dev_type; 2611 } 2612 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2613 " pri_dev_type=%s name='%s' config_methods=0x%x " 2614 "dev_capab=0x%x group_capab=0x%x%s%s", 2615 MAC2STR(dev_addr), 2616 wps_dev_type_bin2str(pri_dev_type, devtype, 2617 sizeof(devtype)), 2618 dev_name, supp_config_methods, dev_capab, group_capab, 2619 group ? " group=" : "", 2620 group ? group->ifname : ""); 2621 if (os_snprintf_error(sizeof(params), res)) 2622 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2623 params[sizeof(params) - 1] = '\0'; 2624 2625 if (config_methods & WPS_CONFIG_DISPLAY) { 2626 if (wps_generate_pin(&generated_pin) < 0) { 2627 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2628 wpas_notify_p2p_provision_discovery( 2629 wpa_s, peer, 0 /* response */, 2630 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2631 return; 2632 } 2633 wpas_prov_disc_local_display(wpa_s, peer, params, 2634 generated_pin); 2635 } else if (config_methods & WPS_CONFIG_KEYPAD) 2636 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2637 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2638 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2639 MACSTR "%s", MAC2STR(peer), params); 2640 2641 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2642 P2P_PROV_DISC_SUCCESS, 2643 config_methods, generated_pin); 2644 } 2645 2646 2647 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2648 { 2649 struct wpa_supplicant *wpa_s = ctx; 2650 unsigned int generated_pin = 0; 2651 char params[20]; 2652 2653 if (wpa_s->pending_pd_before_join && 2654 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2655 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2656 wpa_s->pending_pd_before_join = 0; 2657 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2658 "join-existing-group operation"); 2659 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2660 return; 2661 } 2662 2663 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2664 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2665 int res; 2666 2667 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2668 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2669 if (os_snprintf_error(sizeof(params), res)) 2670 params[sizeof(params) - 1] = '\0'; 2671 } else 2672 params[0] = '\0'; 2673 2674 if (config_methods & WPS_CONFIG_DISPLAY) 2675 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2676 else if (config_methods & WPS_CONFIG_KEYPAD) { 2677 if (wps_generate_pin(&generated_pin) < 0) { 2678 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2679 wpas_notify_p2p_provision_discovery( 2680 wpa_s, peer, 0 /* response */, 2681 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2682 return; 2683 } 2684 wpas_prov_disc_local_display(wpa_s, peer, params, 2685 generated_pin); 2686 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2687 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2688 MACSTR "%s", MAC2STR(peer), params); 2689 2690 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2691 P2P_PROV_DISC_SUCCESS, 2692 config_methods, generated_pin); 2693 } 2694 2695 2696 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2697 enum p2p_prov_disc_status status, 2698 u32 adv_id, const u8 *adv_mac, 2699 const char *deferred_session_resp) 2700 { 2701 struct wpa_supplicant *wpa_s = ctx; 2702 2703 if (wpa_s->p2p_fallback_to_go_neg) { 2704 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2705 "failed - fall back to GO Negotiation"); 2706 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 2707 P2P_EVENT_FALLBACK_TO_GO_NEG 2708 "reason=PD-failed"); 2709 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2710 return; 2711 } 2712 2713 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2714 wpa_s->pending_pd_before_join = 0; 2715 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2716 "join-existing-group operation (no ACK for PD " 2717 "Req attempts)"); 2718 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2719 return; 2720 } 2721 2722 if (adv_id && adv_mac && deferred_session_resp) { 2723 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2724 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2725 " deferred_session_resp='%s'", 2726 MAC2STR(peer), status, adv_id, 2727 deferred_session_resp); 2728 } else if (adv_id && adv_mac) { 2729 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2730 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2731 MAC2STR(peer), status, adv_id); 2732 } else { 2733 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2734 " p2p_dev_addr=" MACSTR " status=%d", 2735 MAC2STR(peer), status); 2736 } 2737 2738 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2739 status, 0, 0); 2740 } 2741 2742 2743 static int freq_included(struct wpa_supplicant *wpa_s, 2744 const struct p2p_channels *channels, 2745 unsigned int freq) 2746 { 2747 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2748 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2749 return 1; 2750 return 0; 2751 } 2752 2753 2754 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2755 { 2756 unsigned int num = P2P_MAX_CHANNELS; 2757 int *common_freqs; 2758 int ret; 2759 2760 p2p_go_dump_common_freqs(wpa_s); 2761 common_freqs = os_calloc(num, sizeof(int)); 2762 if (!common_freqs) 2763 return; 2764 2765 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2766 if (ret < 0) { 2767 wpa_dbg(wpa_s, MSG_DEBUG, 2768 "P2P: Failed to get group common freqs"); 2769 os_free(common_freqs); 2770 return; 2771 } 2772 2773 os_free(wpa_s->p2p_group_common_freqs); 2774 wpa_s->p2p_group_common_freqs = common_freqs; 2775 wpa_s->p2p_group_common_freqs_num = num; 2776 p2p_go_dump_common_freqs(wpa_s); 2777 } 2778 2779 2780 /* 2781 * Check if the given frequency is one of the possible operating frequencies 2782 * set after the completion of the GO Negotiation. 2783 */ 2784 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2785 { 2786 unsigned int i; 2787 2788 p2p_go_dump_common_freqs(wpa_s); 2789 2790 /* assume no restrictions */ 2791 if (!wpa_s->p2p_group_common_freqs_num) 2792 return 1; 2793 2794 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2795 if (wpa_s->p2p_group_common_freqs[i] == freq) 2796 return 1; 2797 } 2798 return 0; 2799 } 2800 2801 2802 static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2803 struct sta_info *sta, void *ctx) 2804 { 2805 int *ecsa_support = ctx; 2806 2807 *ecsa_support &= sta->ecsa_supported; 2808 2809 return 0; 2810 } 2811 2812 2813 /* Check if all the peers support eCSA */ 2814 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2815 { 2816 int ecsa_support = 1; 2817 2818 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2819 &ecsa_support); 2820 2821 return ecsa_support; 2822 } 2823 2824 2825 /** 2826 * Pick the best frequency to use from all the currently used frequencies. 2827 */ 2828 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2829 struct wpa_used_freq_data *freqs, 2830 unsigned int num) 2831 { 2832 unsigned int i, c; 2833 2834 /* find a candidate freq that is supported by P2P */ 2835 for (c = 0; c < num; c++) 2836 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2837 break; 2838 2839 if (c == num) 2840 return 0; 2841 2842 /* once we have a candidate, try to find a 'better' one */ 2843 for (i = c + 1; i < num; i++) { 2844 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2845 continue; 2846 2847 /* 2848 * 1. Infrastructure station interfaces have higher preference. 2849 * 2. P2P Clients have higher preference. 2850 * 3. All others. 2851 */ 2852 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2853 c = i; 2854 break; 2855 } 2856 2857 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2858 c = i; 2859 } 2860 return freqs[c].freq; 2861 } 2862 2863 2864 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2865 const u8 *go_dev_addr, const u8 *ssid, 2866 size_t ssid_len, int *go, u8 *group_bssid, 2867 int *force_freq, int persistent_group, 2868 const struct p2p_channels *channels, 2869 int dev_pw_id) 2870 { 2871 struct wpa_supplicant *wpa_s = ctx; 2872 struct wpa_ssid *s; 2873 struct wpa_used_freq_data *freqs; 2874 struct wpa_supplicant *grp; 2875 int best_freq; 2876 2877 if (!persistent_group) { 2878 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2879 " to join an active group (SSID: %s)", 2880 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2881 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2882 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2883 == 0 || 2884 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2885 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2886 "authorized invitation"); 2887 goto accept_inv; 2888 } 2889 2890 #ifdef CONFIG_WPS_NFC 2891 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2892 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2893 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2894 wpa_s->p2p_wps_method = WPS_NFC; 2895 wpa_s->pending_join_wps_method = WPS_NFC; 2896 os_memcpy(wpa_s->pending_join_dev_addr, 2897 go_dev_addr, ETH_ALEN); 2898 os_memcpy(wpa_s->pending_join_iface_addr, 2899 bssid, ETH_ALEN); 2900 goto accept_inv; 2901 } 2902 #endif /* CONFIG_WPS_NFC */ 2903 2904 /* 2905 * Do not accept the invitation automatically; notify user and 2906 * request approval. 2907 */ 2908 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2909 } 2910 2911 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2912 if (grp) { 2913 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2914 "running persistent group"); 2915 if (*go) 2916 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2917 goto accept_inv; 2918 } 2919 2920 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2921 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2922 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2923 "invitation to re-invoke a persistent group"); 2924 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2925 } else if (!wpa_s->conf->persistent_reconnect) 2926 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2927 2928 for (s = wpa_s->conf->ssid; s; s = s->next) { 2929 if (s->disabled == 2 && 2930 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2931 s->ssid_len == ssid_len && 2932 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2933 break; 2934 } 2935 2936 if (!s) { 2937 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2938 " requested reinvocation of an unknown group", 2939 MAC2STR(sa)); 2940 return P2P_SC_FAIL_UNKNOWN_GROUP; 2941 } 2942 2943 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2944 *go = 1; 2945 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2946 wpa_printf(MSG_DEBUG, "P2P: The only available " 2947 "interface is already in use - reject " 2948 "invitation"); 2949 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2950 } 2951 if (wpa_s->p2p_mgmt) 2952 os_memcpy(group_bssid, wpa_s->parent->own_addr, 2953 ETH_ALEN); 2954 else 2955 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2956 } else if (s->mode == WPAS_MODE_P2P_GO) { 2957 *go = 1; 2958 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2959 { 2960 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2961 "interface address for the group"); 2962 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2963 } 2964 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2965 ETH_ALEN); 2966 } 2967 2968 accept_inv: 2969 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2970 2971 best_freq = 0; 2972 freqs = os_calloc(wpa_s->num_multichan_concurrent, 2973 sizeof(struct wpa_used_freq_data)); 2974 if (freqs) { 2975 int num_channels = wpa_s->num_multichan_concurrent; 2976 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 2977 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 2978 os_free(freqs); 2979 } 2980 2981 /* Get one of the frequencies currently in use */ 2982 if (best_freq > 0) { 2983 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 2984 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 2985 2986 if (wpa_s->num_multichan_concurrent < 2 || 2987 wpas_p2p_num_unused_channels(wpa_s) < 1) { 2988 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 2989 *force_freq = best_freq; 2990 } 2991 } 2992 2993 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 2994 wpas_p2p_num_unused_channels(wpa_s) > 0) { 2995 if (*go == 0) { 2996 /* We are the client */ 2997 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 2998 "running a GO but we are capable of MCC, " 2999 "figure out the best channel to use"); 3000 *force_freq = 0; 3001 } else if (!freq_included(wpa_s, channels, *force_freq)) { 3002 /* We are the GO, and *force_freq is not in the 3003 * intersection */ 3004 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 3005 "in intersection but we are capable of MCC, " 3006 "figure out the best channel to use", 3007 *force_freq); 3008 *force_freq = 0; 3009 } 3010 } 3011 3012 return P2P_SC_SUCCESS; 3013 } 3014 3015 3016 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3017 const u8 *ssid, size_t ssid_len, 3018 const u8 *go_dev_addr, u8 status, 3019 int op_freq) 3020 { 3021 struct wpa_supplicant *wpa_s = ctx; 3022 struct wpa_ssid *s; 3023 3024 for (s = wpa_s->conf->ssid; s; s = s->next) { 3025 if (s->disabled == 2 && 3026 s->ssid_len == ssid_len && 3027 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3028 break; 3029 } 3030 3031 if (status == P2P_SC_SUCCESS) { 3032 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3033 " was accepted; op_freq=%d MHz, SSID=%s", 3034 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3035 if (s) { 3036 int go = s->mode == WPAS_MODE_P2P_GO; 3037 if (go) { 3038 wpa_msg_global(wpa_s, MSG_INFO, 3039 P2P_EVENT_INVITATION_ACCEPTED 3040 "sa=" MACSTR 3041 " persistent=%d freq=%d", 3042 MAC2STR(sa), s->id, op_freq); 3043 } else { 3044 wpa_msg_global(wpa_s, MSG_INFO, 3045 P2P_EVENT_INVITATION_ACCEPTED 3046 "sa=" MACSTR 3047 " persistent=%d", 3048 MAC2STR(sa), s->id); 3049 } 3050 wpas_p2p_group_add_persistent( 3051 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL, 3052 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 3053 1); 3054 } else if (bssid) { 3055 wpa_s->user_initiated_pd = 0; 3056 wpa_msg_global(wpa_s, MSG_INFO, 3057 P2P_EVENT_INVITATION_ACCEPTED 3058 "sa=" MACSTR " go_dev_addr=" MACSTR 3059 " bssid=" MACSTR " unknown-network", 3060 MAC2STR(sa), MAC2STR(go_dev_addr), 3061 MAC2STR(bssid)); 3062 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3063 wpa_s->p2p_wps_method, 0, op_freq, 3064 ssid, ssid_len); 3065 } 3066 return; 3067 } 3068 3069 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3070 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3071 " was rejected (status %u)", MAC2STR(sa), status); 3072 return; 3073 } 3074 3075 if (!s) { 3076 if (bssid) { 3077 wpa_msg_global(wpa_s, MSG_INFO, 3078 P2P_EVENT_INVITATION_RECEIVED 3079 "sa=" MACSTR " go_dev_addr=" MACSTR 3080 " bssid=" MACSTR " unknown-network", 3081 MAC2STR(sa), MAC2STR(go_dev_addr), 3082 MAC2STR(bssid)); 3083 } else { 3084 wpa_msg_global(wpa_s, MSG_INFO, 3085 P2P_EVENT_INVITATION_RECEIVED 3086 "sa=" MACSTR " go_dev_addr=" MACSTR 3087 " unknown-network", 3088 MAC2STR(sa), MAC2STR(go_dev_addr)); 3089 } 3090 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3091 bssid, 0, op_freq); 3092 return; 3093 } 3094 3095 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3096 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3097 "sa=" MACSTR " persistent=%d freq=%d", 3098 MAC2STR(sa), s->id, op_freq); 3099 } else { 3100 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3101 "sa=" MACSTR " persistent=%d", 3102 MAC2STR(sa), s->id); 3103 } 3104 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3105 s->id, op_freq); 3106 } 3107 3108 3109 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3110 struct wpa_ssid *ssid, 3111 const u8 *peer, int inv) 3112 { 3113 size_t i; 3114 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3115 3116 if (ssid == NULL) 3117 return; 3118 3119 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3120 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3121 ETH_ALEN) == 0) 3122 break; 3123 } 3124 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3125 if (ssid->mode != WPAS_MODE_P2P_GO && 3126 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3127 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3128 "due to invitation result", ssid->id); 3129 wpas_notify_network_removed(wpa_s, ssid); 3130 wpa_config_remove_network(wpa_s->conf, ssid->id); 3131 return; 3132 } 3133 return; /* Peer not found in client list */ 3134 } 3135 3136 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3137 "group %d client list%s", 3138 MAC2STR(peer), ssid->id, 3139 inv ? " due to invitation result" : ""); 3140 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3141 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3142 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3143 ssid->num_p2p_clients--; 3144 if (p2p_wpa_s->conf->update_config && 3145 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3146 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3147 } 3148 3149 3150 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3151 const u8 *peer) 3152 { 3153 struct wpa_ssid *ssid; 3154 3155 wpa_s = wpa_s->global->p2p_invite_group; 3156 if (wpa_s == NULL) 3157 return; /* No known invitation group */ 3158 ssid = wpa_s->current_ssid; 3159 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3160 !ssid->p2p_persistent_group) 3161 return; /* Not operating as a GO in persistent group */ 3162 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer, 3163 ssid->ssid, ssid->ssid_len); 3164 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3165 } 3166 3167 3168 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3169 const struct p2p_channels *channels, 3170 const u8 *peer, int neg_freq, 3171 int peer_oper_freq) 3172 { 3173 struct wpa_supplicant *wpa_s = ctx; 3174 struct wpa_ssid *ssid; 3175 int freq; 3176 3177 if (bssid) { 3178 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3179 "status=%d " MACSTR, 3180 status, MAC2STR(bssid)); 3181 } else { 3182 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3183 "status=%d ", status); 3184 } 3185 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3186 3187 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3188 status, MAC2STR(peer)); 3189 if (wpa_s->pending_invite_ssid_id == -1) { 3190 struct wpa_supplicant *group_if = 3191 wpa_s->global->p2p_invite_group; 3192 3193 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3194 wpas_remove_persistent_client(wpa_s, peer); 3195 3196 /* 3197 * Invitation to an active group. If this is successful and we 3198 * are the GO, set the client wait to postpone some concurrent 3199 * operations and to allow provisioning and connection to happen 3200 * more quickly. 3201 */ 3202 if (status == P2P_SC_SUCCESS && 3203 group_if && group_if->current_ssid && 3204 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3205 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3206 #ifdef CONFIG_TESTING_OPTIONS 3207 if (group_if->p2p_go_csa_on_inv) { 3208 wpa_printf(MSG_DEBUG, 3209 "Testing: force P2P GO CSA after invitation"); 3210 eloop_cancel_timeout( 3211 wpas_p2p_reconsider_moving_go, 3212 wpa_s, NULL); 3213 eloop_register_timeout( 3214 0, 50000, 3215 wpas_p2p_reconsider_moving_go, 3216 wpa_s, NULL); 3217 } 3218 #endif /* CONFIG_TESTING_OPTIONS */ 3219 } 3220 return; 3221 } 3222 3223 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3224 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3225 "invitation exchange to indicate readiness for " 3226 "re-invocation"); 3227 } 3228 3229 if (status != P2P_SC_SUCCESS) { 3230 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3231 ssid = wpa_config_get_network( 3232 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3233 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3234 } 3235 wpas_p2p_remove_pending_group_interface(wpa_s); 3236 return; 3237 } 3238 3239 ssid = wpa_config_get_network(wpa_s->conf, 3240 wpa_s->pending_invite_ssid_id); 3241 if (ssid == NULL) { 3242 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3243 "data matching with invitation"); 3244 return; 3245 } 3246 3247 /* 3248 * The peer could have missed our ctrl::ack frame for Invitation 3249 * Response and continue retransmitting the frame. To reduce the 3250 * likelihood of the peer not getting successful TX status for the 3251 * Invitation Response frame, wait a short time here before starting 3252 * the persistent group so that we will remain on the current channel to 3253 * acknowledge any possible retransmission from the peer. 3254 */ 3255 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3256 "starting persistent group"); 3257 os_sleep(0, 50000); 3258 3259 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3260 freq_included(wpa_s, channels, neg_freq)) 3261 freq = neg_freq; 3262 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3263 freq_included(wpa_s, channels, peer_oper_freq)) 3264 freq = peer_oper_freq; 3265 else 3266 freq = 0; 3267 3268 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3269 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3270 wpas_p2p_group_add_persistent(wpa_s, ssid, 3271 ssid->mode == WPAS_MODE_P2P_GO, 3272 wpa_s->p2p_persistent_go_freq, 3273 freq, 3274 wpa_s->p2p_go_vht_center_freq2, 3275 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3276 wpa_s->p2p_go_max_oper_chwidth, 3277 channels, 3278 ssid->mode == WPAS_MODE_P2P_GO ? 3279 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3280 0, 1); 3281 } 3282 3283 3284 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3285 unsigned int freq) 3286 { 3287 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3288 return 1; 3289 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3290 } 3291 3292 3293 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3294 { 3295 reg->channel[reg->channels] = chan; 3296 reg->channels++; 3297 } 3298 3299 3300 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3301 struct p2p_channels *chan, 3302 struct p2p_channels *cli_chan) 3303 { 3304 int i, cla = 0; 3305 3306 wpa_s->global->p2p_24ghz_social_channels = 1; 3307 3308 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3309 3310 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3311 "band"); 3312 3313 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3314 chan->reg_class[cla].reg_class = 81; 3315 chan->reg_class[cla].channels = 0; 3316 for (i = 0; i < 11; i++) { 3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3318 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3319 } 3320 if (chan->reg_class[cla].channels) 3321 cla++; 3322 3323 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3324 "band"); 3325 3326 /* Operating class 115 - 5 GHz, channels 36-48 */ 3327 chan->reg_class[cla].reg_class = 115; 3328 chan->reg_class[cla].channels = 0; 3329 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3330 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3331 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3332 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3333 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3334 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3335 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3336 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3337 if (chan->reg_class[cla].channels) 3338 cla++; 3339 3340 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3341 "band"); 3342 3343 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3344 chan->reg_class[cla].reg_class = 124; 3345 chan->reg_class[cla].channels = 0; 3346 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3347 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3348 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3349 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3350 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3351 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3352 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3353 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3354 if (chan->reg_class[cla].channels) 3355 cla++; 3356 3357 chan->reg_classes = cla; 3358 return 0; 3359 } 3360 3361 3362 static int has_channel(struct wpa_global *global, 3363 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3364 { 3365 int i; 3366 unsigned int freq; 3367 3368 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3369 chan * 5; 3370 if (wpas_p2p_disallowed_freq(global, freq)) 3371 return NOT_ALLOWED; 3372 3373 for (i = 0; i < mode->num_channels; i++) { 3374 if (mode->channels[i].chan == chan) { 3375 if (flags) 3376 *flags = mode->channels[i].flag; 3377 if (mode->channels[i].flag & 3378 (HOSTAPD_CHAN_DISABLED | 3379 HOSTAPD_CHAN_RADAR)) 3380 return NOT_ALLOWED; 3381 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3382 return NO_IR; 3383 return ALLOWED; 3384 } 3385 } 3386 3387 return NOT_ALLOWED; 3388 } 3389 3390 3391 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3392 struct hostapd_hw_modes *mode, 3393 u8 channel) 3394 { 3395 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3396 size_t i; 3397 3398 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3399 return 0; 3400 3401 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3402 /* 3403 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3404 * so the center channel is 6 channels away from the start/end. 3405 */ 3406 if (channel >= center_channels[i] - 6 && 3407 channel <= center_channels[i] + 6) 3408 return center_channels[i]; 3409 3410 return 0; 3411 } 3412 3413 3414 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3415 struct hostapd_hw_modes *mode, 3416 u8 channel, u8 bw) 3417 { 3418 u8 center_chan; 3419 int i, flags; 3420 enum chan_allowed res, ret = ALLOWED; 3421 3422 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3423 if (!center_chan) 3424 return NOT_ALLOWED; 3425 if (center_chan >= 58 && center_chan <= 138) 3426 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3427 3428 /* check all the channels are available */ 3429 for (i = 0; i < 4; i++) { 3430 int adj_chan = center_chan - 6 + i * 4; 3431 3432 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3433 if (res == NOT_ALLOWED) 3434 return NOT_ALLOWED; 3435 if (res == NO_IR) 3436 ret = NO_IR; 3437 3438 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3439 return NOT_ALLOWED; 3440 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3441 return NOT_ALLOWED; 3442 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3443 return NOT_ALLOWED; 3444 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3445 return NOT_ALLOWED; 3446 } 3447 3448 return ret; 3449 } 3450 3451 3452 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3453 struct hostapd_hw_modes *mode, 3454 u8 channel) 3455 { 3456 u8 center_channels[] = { 50, 114 }; 3457 unsigned int i; 3458 3459 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3460 return 0; 3461 3462 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3463 /* 3464 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3465 * so the center channel is 14 channels away from the start/end. 3466 */ 3467 if (channel >= center_channels[i] - 14 && 3468 channel <= center_channels[i] + 14) 3469 return center_channels[i]; 3470 3471 return 0; 3472 } 3473 3474 3475 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3476 struct hostapd_hw_modes *mode, 3477 u8 channel, u8 bw) 3478 { 3479 u8 center_chan; 3480 int i, flags; 3481 enum chan_allowed res, ret = ALLOWED; 3482 3483 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3484 if (!center_chan) 3485 return NOT_ALLOWED; 3486 /* VHT 160 MHz uses DFS channels in most countries. */ 3487 3488 /* Check all the channels are available */ 3489 for (i = 0; i < 8; i++) { 3490 int adj_chan = center_chan - 14 + i * 4; 3491 3492 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3493 if (res == NOT_ALLOWED) 3494 return NOT_ALLOWED; 3495 3496 if (res == NO_IR) 3497 ret = NO_IR; 3498 3499 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3500 return NOT_ALLOWED; 3501 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3502 return NOT_ALLOWED; 3503 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3504 return NOT_ALLOWED; 3505 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3506 return NOT_ALLOWED; 3507 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3508 return NOT_ALLOWED; 3509 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3510 return NOT_ALLOWED; 3511 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3512 return NOT_ALLOWED; 3513 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3514 return NOT_ALLOWED; 3515 } 3516 3517 return ret; 3518 } 3519 3520 3521 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3522 struct hostapd_hw_modes *mode, 3523 u8 channel, u8 bw) 3524 { 3525 int flag = 0; 3526 enum chan_allowed res, res2; 3527 3528 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3529 if (bw == BW40MINUS) { 3530 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3531 return NOT_ALLOWED; 3532 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3533 } else if (bw == BW40PLUS) { 3534 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3535 return NOT_ALLOWED; 3536 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3537 } else if (bw == BW80) { 3538 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3539 } else if (bw == BW160) { 3540 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3541 } 3542 3543 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3544 return NOT_ALLOWED; 3545 if (res == NO_IR || res2 == NO_IR) 3546 return NO_IR; 3547 return res; 3548 } 3549 3550 3551 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3552 struct p2p_channels *chan, 3553 struct p2p_channels *cli_chan) 3554 { 3555 struct hostapd_hw_modes *mode; 3556 int cla, op, cli_cla; 3557 3558 if (wpa_s->hw.modes == NULL) { 3559 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3560 "of all supported channels; assume dualband " 3561 "support"); 3562 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3563 } 3564 3565 cla = cli_cla = 0; 3566 3567 for (op = 0; global_op_class[op].op_class; op++) { 3568 const struct oper_class_map *o = &global_op_class[op]; 3569 u8 ch; 3570 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3571 3572 if (o->p2p == NO_P2P_SUPP) 3573 continue; 3574 3575 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3576 if (mode == NULL) 3577 continue; 3578 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3579 wpa_s->global->p2p_24ghz_social_channels = 1; 3580 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3581 enum chan_allowed res; 3582 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3583 if (res == ALLOWED) { 3584 if (reg == NULL) { 3585 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3586 o->op_class); 3587 reg = &chan->reg_class[cla]; 3588 cla++; 3589 reg->reg_class = o->op_class; 3590 } 3591 reg->channel[reg->channels] = ch; 3592 reg->channels++; 3593 } else if (res == NO_IR && 3594 wpa_s->conf->p2p_add_cli_chan) { 3595 if (cli_reg == NULL) { 3596 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3597 o->op_class); 3598 cli_reg = &cli_chan->reg_class[cli_cla]; 3599 cli_cla++; 3600 cli_reg->reg_class = o->op_class; 3601 } 3602 cli_reg->channel[cli_reg->channels] = ch; 3603 cli_reg->channels++; 3604 } 3605 } 3606 if (reg) { 3607 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3608 reg->channel, reg->channels); 3609 } 3610 if (cli_reg) { 3611 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3612 cli_reg->channel, cli_reg->channels); 3613 } 3614 } 3615 3616 chan->reg_classes = cla; 3617 cli_chan->reg_classes = cli_cla; 3618 3619 return 0; 3620 } 3621 3622 3623 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3624 struct hostapd_hw_modes *mode, u8 channel) 3625 { 3626 int op; 3627 enum chan_allowed ret; 3628 3629 for (op = 0; global_op_class[op].op_class; op++) { 3630 const struct oper_class_map *o = &global_op_class[op]; 3631 u8 ch; 3632 3633 if (o->p2p == NO_P2P_SUPP) 3634 continue; 3635 3636 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3637 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3638 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3639 ch != channel) 3640 continue; 3641 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3642 if (ret == ALLOWED) 3643 return (o->bw == BW40MINUS) ? -1 : 1; 3644 } 3645 } 3646 return 0; 3647 } 3648 3649 3650 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3651 struct hostapd_hw_modes *mode, u8 channel) 3652 { 3653 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3654 return 0; 3655 3656 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3657 } 3658 3659 3660 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3661 struct hostapd_hw_modes *mode, u8 channel) 3662 { 3663 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3664 return 0; 3665 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3666 } 3667 3668 3669 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3670 size_t buf_len) 3671 { 3672 struct wpa_supplicant *wpa_s = ctx; 3673 3674 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3675 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3676 break; 3677 } 3678 if (wpa_s == NULL) 3679 return -1; 3680 3681 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3682 } 3683 3684 3685 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3686 const u8 *ssid, size_t ssid_len) 3687 { 3688 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3689 struct wpa_ssid *s = wpa_s->current_ssid; 3690 if (s == NULL) 3691 continue; 3692 if (s->mode != WPAS_MODE_P2P_GO && 3693 s->mode != WPAS_MODE_AP && 3694 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3695 continue; 3696 if (s->ssid_len != ssid_len || 3697 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3698 continue; 3699 return wpa_s; 3700 } 3701 3702 return NULL; 3703 3704 } 3705 3706 3707 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3708 const u8 *peer_dev_addr) 3709 { 3710 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3711 struct wpa_ssid *ssid = wpa_s->current_ssid; 3712 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3713 continue; 3714 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3715 return wpa_s; 3716 } 3717 3718 return NULL; 3719 } 3720 3721 3722 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3723 { 3724 struct wpa_supplicant *wpa_s = ctx; 3725 3726 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3727 } 3728 3729 3730 static int wpas_is_concurrent_session_active(void *ctx) 3731 { 3732 struct wpa_supplicant *wpa_s = ctx; 3733 struct wpa_supplicant *ifs; 3734 3735 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3736 if (ifs == wpa_s) 3737 continue; 3738 if (ifs->wpa_state > WPA_ASSOCIATED) 3739 return 1; 3740 } 3741 return 0; 3742 } 3743 3744 3745 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3746 { 3747 struct wpa_supplicant *wpa_s = ctx; 3748 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3749 } 3750 3751 3752 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3753 const char *conf_p2p_dev) 3754 { 3755 struct wpa_interface iface; 3756 struct wpa_supplicant *p2pdev_wpa_s; 3757 char ifname[100]; 3758 char force_name[100]; 3759 int ret; 3760 3761 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3762 wpa_s->ifname); 3763 if (os_snprintf_error(sizeof(ifname), ret)) 3764 return -1; 3765 force_name[0] = '\0'; 3766 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3767 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3768 force_name, wpa_s->pending_interface_addr, NULL); 3769 if (ret < 0) { 3770 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3771 return ret; 3772 } 3773 os_strlcpy(wpa_s->pending_interface_name, ifname, 3774 sizeof(wpa_s->pending_interface_name)); 3775 3776 os_memset(&iface, 0, sizeof(iface)); 3777 iface.p2p_mgmt = 1; 3778 iface.ifname = wpa_s->pending_interface_name; 3779 iface.driver = wpa_s->driver->name; 3780 iface.driver_param = wpa_s->conf->driver_param; 3781 3782 /* 3783 * If a P2P Device configuration file was given, use it as the interface 3784 * configuration file (instead of using parent's configuration file. 3785 */ 3786 if (conf_p2p_dev) { 3787 iface.confname = conf_p2p_dev; 3788 iface.ctrl_interface = NULL; 3789 } else { 3790 iface.confname = wpa_s->confname; 3791 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3792 } 3793 3794 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3795 if (!p2pdev_wpa_s) { 3796 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3797 return -1; 3798 } 3799 3800 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s; 3801 wpa_s->pending_interface_name[0] = '\0'; 3802 return 0; 3803 } 3804 3805 3806 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3807 const u8 *noa, size_t noa_len) 3808 { 3809 struct wpa_supplicant *wpa_s, *intf = ctx; 3810 char hex[100]; 3811 3812 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3813 if (wpa_s->waiting_presence_resp) 3814 break; 3815 } 3816 if (!wpa_s) { 3817 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3818 return; 3819 } 3820 wpa_s->waiting_presence_resp = 0; 3821 3822 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3824 " status=%u noa=%s", MAC2STR(src), status, hex); 3825 } 3826 3827 3828 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3829 size_t ssid_len, u8 *go_dev_addr, 3830 u8 *ret_ssid, size_t *ret_ssid_len, 3831 u8 *intended_iface_addr) 3832 { 3833 struct wpa_supplicant *wpa_s = ctx; 3834 struct wpa_ssid *s; 3835 3836 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3837 if (s) { 3838 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3839 *ret_ssid_len = s->ssid_len; 3840 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3841 3842 if (s->mode != WPAS_MODE_P2P_GO) { 3843 os_memset(intended_iface_addr, 0, ETH_ALEN); 3844 } else if (wpas_p2p_create_iface(wpa_s)) { 3845 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3846 return 0; 3847 3848 os_memcpy(intended_iface_addr, 3849 wpa_s->pending_interface_addr, ETH_ALEN); 3850 } else { 3851 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3852 ETH_ALEN); 3853 } 3854 return 1; 3855 } 3856 3857 return 0; 3858 } 3859 3860 3861 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3862 u8 *ssid, size_t *ssid_len, int *group_iface, 3863 unsigned int *freq) 3864 { 3865 struct wpa_supplicant *wpa_s = ctx; 3866 struct wpa_supplicant *go; 3867 struct wpa_ssid *s; 3868 3869 /* 3870 * group_iface will be set to 1 only if a dedicated interface for P2P 3871 * role is required. First, we try to reuse an active GO. However, 3872 * if it is not present, we will try to reactivate an existing 3873 * persistent group and set group_iface to 1, so the caller will know 3874 * that the pending interface should be used. 3875 */ 3876 *group_iface = 0; 3877 3878 if (freq) 3879 *freq = 0; 3880 3881 go = wpas_p2p_get_go_group(wpa_s); 3882 if (!go) { 3883 s = wpas_p2p_get_persistent_go(wpa_s); 3884 *group_iface = wpas_p2p_create_iface(wpa_s); 3885 if (s) 3886 os_memcpy(intended_addr, s->bssid, ETH_ALEN); 3887 else 3888 return 0; 3889 } else { 3890 s = go->current_ssid; 3891 os_memcpy(intended_addr, go->own_addr, ETH_ALEN); 3892 if (freq) 3893 *freq = go->assoc_freq; 3894 } 3895 3896 os_memcpy(ssid, s->ssid, s->ssid_len); 3897 *ssid_len = s->ssid_len; 3898 3899 return 1; 3900 } 3901 3902 3903 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3904 const u8 *ssid, size_t ssid_len) 3905 { 3906 struct wpa_supplicant *wpa_s = ctx; 3907 struct wpa_ssid *s; 3908 int save_config = 0; 3909 size_t i; 3910 3911 /* Start with our first choice of Persistent Groups */ 3912 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3913 if (go && ssid && ssid_len && 3914 s->ssid_len == ssid_len && 3915 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3916 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3917 break; 3918 3919 /* Remove stale persistent group */ 3920 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3921 wpa_config_remove_network(wpa_s->conf, s->id); 3922 save_config = 1; 3923 continue; 3924 } 3925 3926 for (i = 0; i < s->num_p2p_clients; i++) { 3927 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3928 peer, ETH_ALEN) != 0) 3929 continue; 3930 3931 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3932 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3933 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3934 break; 3935 } 3936 s->num_p2p_clients--; 3937 save_config = 1; 3938 } 3939 3940 if (save_config) 3941 p2p_config_write(wpa_s); 3942 3943 /* Return TRUE if valid SSID remains */ 3944 return s != NULL; 3945 } 3946 3947 3948 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3949 const u8 *feat_cap, size_t feat_cap_len) 3950 { 3951 static const char pref[] = " feature_cap="; 3952 int ret; 3953 3954 buf[0] = '\0'; 3955 3956 /* 3957 * We expect a feature capability to contain at least one byte to be 3958 * reported. The string buffer provided by the caller function is 3959 * expected to be big enough to contain all bytes of the attribute for 3960 * known specifications. This function truncates the reported bytes if 3961 * the feature capability data exceeds the string buffer size. 3962 */ 3963 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 3964 return; 3965 3966 os_memcpy(buf, pref, sizeof(pref)); 3967 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 3968 buf_len - sizeof(pref) + 1, 3969 feat_cap, feat_cap_len); 3970 3971 if (ret != (2 * (int) feat_cap_len)) 3972 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 3973 } 3974 3975 3976 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 3977 const u8 *adv_mac, const u8 *ses_mac, 3978 const u8 *grp_mac, u32 adv_id, u32 ses_id, 3979 u8 conncap, int passwd_id, 3980 const u8 *persist_ssid, 3981 size_t persist_ssid_size, int response_done, 3982 int prov_start, const char *session_info, 3983 const u8 *feat_cap, size_t feat_cap_len, 3984 unsigned int freq, 3985 const u8 *group_ssid, size_t group_ssid_len) 3986 { 3987 struct wpa_supplicant *wpa_s = ctx; 3988 u8 mac[ETH_ALEN]; 3989 struct wpa_ssid *persistent_go, *stale, *s = NULL; 3990 int save_config = 0; 3991 struct wpa_supplicant *go_wpa_s; 3992 char feat_cap_str[256]; 3993 3994 if (!dev) 3995 return; 3996 3997 os_memset(mac, 0, ETH_ALEN); 3998 if (!adv_mac) 3999 adv_mac = mac; 4000 if (!ses_mac) 4001 ses_mac = mac; 4002 if (!grp_mac) 4003 grp_mac = mac; 4004 4005 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 4006 feat_cap, feat_cap_len); 4007 4008 if (prov_start) { 4009 if (session_info == NULL) { 4010 wpa_msg_global(wpa_s, MSG_INFO, 4011 P2P_EVENT_P2PS_PROVISION_START MACSTR 4012 " adv_id=%x conncap=%x" 4013 " adv_mac=" MACSTR 4014 " session=%x mac=" MACSTR 4015 " dev_passwd_id=%d%s", 4016 MAC2STR(dev), adv_id, conncap, 4017 MAC2STR(adv_mac), 4018 ses_id, MAC2STR(ses_mac), 4019 passwd_id, feat_cap_str); 4020 } else { 4021 wpa_msg_global(wpa_s, MSG_INFO, 4022 P2P_EVENT_P2PS_PROVISION_START MACSTR 4023 " adv_id=%x conncap=%x" 4024 " adv_mac=" MACSTR 4025 " session=%x mac=" MACSTR 4026 " dev_passwd_id=%d info='%s'%s", 4027 MAC2STR(dev), adv_id, conncap, 4028 MAC2STR(adv_mac), 4029 ses_id, MAC2STR(ses_mac), 4030 passwd_id, session_info, feat_cap_str); 4031 } 4032 return; 4033 } 4034 4035 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4036 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4037 4038 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4039 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4040 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4041 4042 if (persistent_go && !persistent_go->num_p2p_clients) { 4043 /* remove empty persistent GO */ 4044 wpa_config_remove_network(wpa_s->conf, 4045 persistent_go->id); 4046 } 4047 4048 wpa_msg_global(wpa_s, MSG_INFO, 4049 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4050 " status=%d" 4051 " adv_id=%x adv_mac=" MACSTR 4052 " session=%x mac=" MACSTR "%s", 4053 MAC2STR(dev), status, 4054 adv_id, MAC2STR(adv_mac), 4055 ses_id, MAC2STR(ses_mac), feat_cap_str); 4056 return; 4057 } 4058 4059 /* Clean up stale persistent groups with this device */ 4060 if (persist_ssid && persist_ssid_size) 4061 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4062 persist_ssid_size); 4063 4064 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4065 is_zero_ether_addr(grp_mac)) { 4066 wpa_dbg(wpa_s, MSG_ERROR, 4067 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4068 return; 4069 } 4070 4071 for (;;) { 4072 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4073 if (!stale) 4074 break; 4075 4076 if (s && s->ssid_len == stale->ssid_len && 4077 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4078 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4079 break; 4080 4081 /* Remove stale persistent group */ 4082 if (stale->mode != WPAS_MODE_P2P_GO || 4083 stale->num_p2p_clients <= 1) { 4084 wpa_config_remove_network(wpa_s->conf, stale->id); 4085 } else { 4086 size_t i; 4087 4088 for (i = 0; i < stale->num_p2p_clients; i++) { 4089 if (os_memcmp(stale->p2p_client_list + 4090 i * ETH_ALEN, 4091 dev, ETH_ALEN) == 0) { 4092 os_memmove(stale->p2p_client_list + 4093 i * ETH_ALEN, 4094 stale->p2p_client_list + 4095 (i + 1) * ETH_ALEN, 4096 (stale->num_p2p_clients - 4097 i - 1) * ETH_ALEN); 4098 break; 4099 } 4100 } 4101 stale->num_p2p_clients--; 4102 } 4103 save_config = 1; 4104 } 4105 4106 if (save_config) 4107 p2p_config_write(wpa_s); 4108 4109 if (s) { 4110 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4111 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4112 4113 if (persistent_go && s != persistent_go && 4114 !persistent_go->num_p2p_clients) { 4115 /* remove empty persistent GO */ 4116 wpa_config_remove_network(wpa_s->conf, 4117 persistent_go->id); 4118 /* Save config */ 4119 } 4120 4121 wpa_msg_global(wpa_s, MSG_INFO, 4122 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4123 " status=%d" 4124 " adv_id=%x adv_mac=" MACSTR 4125 " session=%x mac=" MACSTR 4126 " persist=%d%s", 4127 MAC2STR(dev), status, 4128 adv_id, MAC2STR(adv_mac), 4129 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4130 return; 4131 } 4132 4133 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4134 /* 4135 * We need to copy the interface name. Simply saving a 4136 * pointer isn't enough, since if we use pending_interface_name 4137 * it will be overwritten when the group is added. 4138 */ 4139 char go_ifname[100]; 4140 4141 go_ifname[0] = '\0'; 4142 if (!go_wpa_s) { 4143 wpa_s->global->pending_p2ps_group = 1; 4144 wpa_s->global->pending_p2ps_group_freq = freq; 4145 4146 if (!wpas_p2p_create_iface(wpa_s)) 4147 os_memcpy(go_ifname, wpa_s->ifname, 4148 sizeof(go_ifname)); 4149 else if (wpa_s->pending_interface_name[0]) 4150 os_memcpy(go_ifname, 4151 wpa_s->pending_interface_name, 4152 sizeof(go_ifname)); 4153 4154 if (!go_ifname[0]) { 4155 wpas_p2ps_prov_complete( 4156 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4157 dev, adv_mac, ses_mac, 4158 grp_mac, adv_id, ses_id, 0, 0, 4159 NULL, 0, 0, 0, NULL, NULL, 0, 0, 4160 NULL, 0); 4161 return; 4162 } 4163 4164 /* If PD Resp complete, start up the GO */ 4165 if (response_done && persistent_go) { 4166 wpas_p2p_group_add_persistent( 4167 wpa_s, persistent_go, 4168 0, 0, freq, 0, 0, 0, 0, NULL, 4169 persistent_go->mode == 4170 WPAS_MODE_P2P_GO ? 4171 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4172 0, 0); 4173 } else if (response_done) { 4174 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4175 } 4176 4177 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4178 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4179 ETH_ALEN); 4180 wpa_s->p2ps_method_config_any = 1; 4181 } 4182 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4183 os_memcpy(go_ifname, go_wpa_s->ifname, 4184 sizeof(go_ifname)); 4185 4186 if (is_zero_ether_addr(grp_mac)) { 4187 wpa_dbg(go_wpa_s, MSG_DEBUG, 4188 "P2P: Setting PIN-1 for ANY"); 4189 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4190 "12345670", NULL, 0, 4191 0); 4192 } else { 4193 wpa_dbg(go_wpa_s, MSG_DEBUG, 4194 "P2P: Setting PIN-1 for " MACSTR, 4195 MAC2STR(grp_mac)); 4196 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4197 "12345670", NULL, 0, 4198 0); 4199 } 4200 4201 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4202 wpa_s->p2ps_method_config_any = 1; 4203 } 4204 4205 wpa_msg_global(wpa_s, MSG_INFO, 4206 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4207 " status=%d conncap=%x" 4208 " adv_id=%x adv_mac=" MACSTR 4209 " session=%x mac=" MACSTR 4210 " dev_passwd_id=%d go=%s%s", 4211 MAC2STR(dev), status, conncap, 4212 adv_id, MAC2STR(adv_mac), 4213 ses_id, MAC2STR(ses_mac), 4214 passwd_id, go_ifname, feat_cap_str); 4215 return; 4216 } 4217 4218 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4219 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4220 4221 if (persistent_go && !persistent_go->num_p2p_clients) { 4222 /* remove empty persistent GO */ 4223 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4224 } 4225 4226 if (conncap == P2PS_SETUP_CLIENT) { 4227 char ssid_hex[32 * 2 + 1]; 4228 4229 if (group_ssid) 4230 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex), 4231 group_ssid, group_ssid_len); 4232 else 4233 ssid_hex[0] = '\0'; 4234 wpa_msg_global(wpa_s, MSG_INFO, 4235 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4236 " status=%d conncap=%x" 4237 " adv_id=%x adv_mac=" MACSTR 4238 " session=%x mac=" MACSTR 4239 " dev_passwd_id=%d join=" MACSTR "%s%s%s", 4240 MAC2STR(dev), status, conncap, 4241 adv_id, MAC2STR(adv_mac), 4242 ses_id, MAC2STR(ses_mac), 4243 passwd_id, MAC2STR(grp_mac), feat_cap_str, 4244 group_ssid ? " group_ssid=" : "", ssid_hex); 4245 } else { 4246 wpa_msg_global(wpa_s, MSG_INFO, 4247 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4248 " status=%d conncap=%x" 4249 " adv_id=%x adv_mac=" MACSTR 4250 " session=%x mac=" MACSTR 4251 " dev_passwd_id=%d%s", 4252 MAC2STR(dev), status, conncap, 4253 adv_id, MAC2STR(adv_mac), 4254 ses_id, MAC2STR(ses_mac), 4255 passwd_id, feat_cap_str); 4256 } 4257 } 4258 4259 4260 static int _wpas_p2p_in_progress(void *ctx) 4261 { 4262 struct wpa_supplicant *wpa_s = ctx; 4263 return wpas_p2p_in_progress(wpa_s); 4264 } 4265 4266 4267 static int wpas_prov_disc_resp_cb(void *ctx) 4268 { 4269 struct wpa_supplicant *wpa_s = ctx; 4270 struct wpa_ssid *persistent_go; 4271 unsigned int freq; 4272 4273 if (!wpa_s->global->pending_p2ps_group) 4274 return 0; 4275 4276 freq = wpa_s->global->pending_p2ps_group_freq; 4277 wpa_s->global->pending_p2ps_group_freq = 0; 4278 wpa_s->global->pending_p2ps_group = 0; 4279 4280 if (wpas_p2p_get_go_group(wpa_s)) 4281 return 0; 4282 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4283 4284 if (persistent_go) { 4285 wpas_p2p_group_add_persistent( 4286 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL, 4287 persistent_go->mode == WPAS_MODE_P2P_GO ? 4288 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4289 } else { 4290 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4291 } 4292 4293 return 1; 4294 } 4295 4296 4297 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4298 unsigned int *len, 4299 unsigned int *freq_list) 4300 { 4301 struct wpa_supplicant *wpa_s = ctx; 4302 4303 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4304 WPA_IF_P2P_CLIENT, len, freq_list); 4305 } 4306 4307 4308 /** 4309 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4310 * @global: Pointer to global data from wpa_supplicant_init() 4311 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4312 * Returns: 0 on success, -1 on failure 4313 */ 4314 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4315 { 4316 struct p2p_config p2p; 4317 int i; 4318 4319 if (wpa_s->conf->p2p_disabled) 4320 return 0; 4321 4322 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4323 return 0; 4324 4325 if (global->p2p) 4326 return 0; 4327 4328 os_memset(&p2p, 0, sizeof(p2p)); 4329 p2p.cb_ctx = wpa_s; 4330 p2p.debug_print = wpas_p2p_debug_print; 4331 p2p.p2p_scan = wpas_p2p_scan; 4332 p2p.send_action = wpas_send_action; 4333 p2p.send_action_done = wpas_send_action_done; 4334 p2p.go_neg_completed = wpas_go_neg_completed; 4335 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4336 p2p.dev_found = wpas_dev_found; 4337 p2p.dev_lost = wpas_dev_lost; 4338 p2p.find_stopped = wpas_find_stopped; 4339 p2p.start_listen = wpas_start_listen; 4340 p2p.stop_listen = wpas_stop_listen; 4341 p2p.send_probe_resp = wpas_send_probe_resp; 4342 p2p.sd_request = wpas_sd_request; 4343 p2p.sd_response = wpas_sd_response; 4344 p2p.prov_disc_req = wpas_prov_disc_req; 4345 p2p.prov_disc_resp = wpas_prov_disc_resp; 4346 p2p.prov_disc_fail = wpas_prov_disc_fail; 4347 p2p.invitation_process = wpas_invitation_process; 4348 p2p.invitation_received = wpas_invitation_received; 4349 p2p.invitation_result = wpas_invitation_result; 4350 p2p.get_noa = wpas_get_noa; 4351 p2p.go_connected = wpas_go_connected; 4352 p2p.presence_resp = wpas_presence_resp; 4353 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4354 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4355 p2p.get_persistent_group = wpas_get_persistent_group; 4356 p2p.get_go_info = wpas_get_go_info; 4357 p2p.remove_stale_groups = wpas_remove_stale_groups; 4358 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4359 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4360 p2p.p2ps_group_capability = p2ps_group_capability; 4361 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4362 4363 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4364 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4365 p2p.dev_name = wpa_s->conf->device_name; 4366 p2p.manufacturer = wpa_s->conf->manufacturer; 4367 p2p.model_name = wpa_s->conf->model_name; 4368 p2p.model_number = wpa_s->conf->model_number; 4369 p2p.serial_number = wpa_s->conf->serial_number; 4370 if (wpa_s->wps) { 4371 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4372 p2p.config_methods = wpa_s->wps->config_methods; 4373 } 4374 4375 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4376 wpa_printf(MSG_ERROR, 4377 "P2P: Failed to configure supported channel list"); 4378 return -1; 4379 } 4380 4381 if (wpa_s->conf->p2p_listen_reg_class && 4382 wpa_s->conf->p2p_listen_channel) { 4383 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4384 p2p.channel = wpa_s->conf->p2p_listen_channel; 4385 p2p.channel_forced = 1; 4386 } else { 4387 /* 4388 * Pick one of the social channels randomly as the listen 4389 * channel. 4390 */ 4391 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4392 &p2p.channel) != 0) { 4393 wpa_printf(MSG_INFO, 4394 "P2P: No social channels supported by the driver - do not enable P2P"); 4395 return 0; 4396 } 4397 p2p.channel_forced = 0; 4398 } 4399 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4400 p2p.reg_class, p2p.channel); 4401 4402 if (wpa_s->conf->p2p_oper_reg_class && 4403 wpa_s->conf->p2p_oper_channel) { 4404 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4405 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4406 p2p.cfg_op_channel = 1; 4407 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4408 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4409 4410 } else { 4411 /* 4412 * Use random operation channel from 2.4 GHz band social 4413 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4414 * other preference is indicated. 4415 */ 4416 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4417 &p2p.op_channel) != 0) { 4418 wpa_printf(MSG_ERROR, 4419 "P2P: Failed to select random social channel as operation channel"); 4420 return -1; 4421 } 4422 p2p.cfg_op_channel = 0; 4423 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4424 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4425 } 4426 4427 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4428 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4429 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4430 } 4431 4432 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4433 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4434 p2p.country[2] = 0x04; 4435 } else 4436 os_memcpy(p2p.country, "XX\x04", 3); 4437 4438 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4439 WPS_DEV_TYPE_LEN); 4440 4441 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4442 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4443 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4444 4445 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4446 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4447 4448 p2p.max_peers = 100; 4449 4450 if (wpa_s->conf->p2p_ssid_postfix) { 4451 p2p.ssid_postfix_len = 4452 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4453 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4454 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4455 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4456 p2p.ssid_postfix_len); 4457 } 4458 4459 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4460 4461 p2p.max_listen = wpa_s->max_remain_on_chan; 4462 4463 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4464 wpa_s->conf->p2p_passphrase_len <= 63) 4465 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4466 else 4467 p2p.passphrase_len = 8; 4468 4469 global->p2p = p2p_init(&p2p); 4470 if (global->p2p == NULL) 4471 return -1; 4472 global->p2p_init_wpa_s = wpa_s; 4473 4474 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4475 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4476 continue; 4477 p2p_add_wps_vendor_extension( 4478 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4479 } 4480 4481 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4482 4483 return 0; 4484 } 4485 4486 4487 /** 4488 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4489 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4490 * 4491 * This function deinitialize per-interface P2P data. 4492 */ 4493 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4494 { 4495 if (wpa_s->driver && wpa_s->drv_priv) 4496 wpa_drv_probe_req_report(wpa_s, 0); 4497 4498 if (wpa_s->go_params) { 4499 /* Clear any stored provisioning info */ 4500 p2p_clear_provisioning_info( 4501 wpa_s->global->p2p, 4502 wpa_s->go_params->peer_device_addr); 4503 } 4504 4505 os_free(wpa_s->go_params); 4506 wpa_s->go_params = NULL; 4507 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4508 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4509 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4510 wpa_s->p2p_long_listen = 0; 4511 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4512 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4513 wpas_p2p_remove_pending_group_interface(wpa_s); 4514 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4515 wpas_p2p_listen_work_done(wpa_s); 4516 if (wpa_s->p2p_send_action_work) { 4517 os_free(wpa_s->p2p_send_action_work->ctx); 4518 radio_work_done(wpa_s->p2p_send_action_work); 4519 wpa_s->p2p_send_action_work = NULL; 4520 } 4521 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4522 4523 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4524 wpa_s->p2p_oob_dev_pw = NULL; 4525 4526 os_free(wpa_s->p2p_group_common_freqs); 4527 wpa_s->p2p_group_common_freqs = NULL; 4528 wpa_s->p2p_group_common_freqs_num = 0; 4529 4530 /* TODO: remove group interface from the driver if this wpa_s instance 4531 * is on top of a P2P group interface */ 4532 } 4533 4534 4535 /** 4536 * wpas_p2p_deinit_global - Deinitialize global P2P module 4537 * @global: Pointer to global data from wpa_supplicant_init() 4538 * 4539 * This function deinitializes the global (per device) P2P module. 4540 */ 4541 static void wpas_p2p_deinit_global(struct wpa_global *global) 4542 { 4543 struct wpa_supplicant *wpa_s, *tmp; 4544 4545 wpa_s = global->ifaces; 4546 4547 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4548 4549 /* Remove remaining P2P group interfaces */ 4550 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4551 wpa_s = wpa_s->next; 4552 while (wpa_s) { 4553 tmp = global->ifaces; 4554 while (tmp && 4555 (tmp == wpa_s || 4556 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4557 tmp = tmp->next; 4558 } 4559 if (tmp == NULL) 4560 break; 4561 /* Disconnect from the P2P group and deinit the interface */ 4562 wpas_p2p_disconnect(tmp); 4563 } 4564 4565 /* 4566 * Deinit GO data on any possibly remaining interface (if main 4567 * interface is used as GO). 4568 */ 4569 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4570 if (wpa_s->ap_iface) 4571 wpas_p2p_group_deinit(wpa_s); 4572 } 4573 4574 p2p_deinit(global->p2p); 4575 global->p2p = NULL; 4576 global->p2p_init_wpa_s = NULL; 4577 } 4578 4579 4580 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4581 { 4582 if (wpa_s->conf->p2p_no_group_iface) 4583 return 0; /* separate interface disabled per configuration */ 4584 if (wpa_s->drv_flags & 4585 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4586 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4587 return 1; /* P2P group requires a new interface in every case 4588 */ 4589 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4590 return 0; /* driver does not support concurrent operations */ 4591 if (wpa_s->global->ifaces->next) 4592 return 1; /* more that one interface already in use */ 4593 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4594 return 1; /* this interface is already in use */ 4595 return 0; 4596 } 4597 4598 4599 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4600 const u8 *peer_addr, 4601 enum p2p_wps_method wps_method, 4602 int go_intent, const u8 *own_interface_addr, 4603 unsigned int force_freq, int persistent_group, 4604 struct wpa_ssid *ssid, unsigned int pref_freq) 4605 { 4606 if (persistent_group && wpa_s->conf->persistent_reconnect) 4607 persistent_group = 2; 4608 4609 /* 4610 * Increase GO config timeout if HT40 is used since it takes some time 4611 * to scan channels for coex purposes before the BSS can be started. 4612 */ 4613 p2p_set_config_timeout(wpa_s->global->p2p, 4614 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4615 4616 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4617 go_intent, own_interface_addr, force_freq, 4618 persistent_group, ssid ? ssid->ssid : NULL, 4619 ssid ? ssid->ssid_len : 0, 4620 wpa_s->p2p_pd_before_go_neg, pref_freq, 4621 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4622 0); 4623 } 4624 4625 4626 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4627 const u8 *peer_addr, 4628 enum p2p_wps_method wps_method, 4629 int go_intent, const u8 *own_interface_addr, 4630 unsigned int force_freq, int persistent_group, 4631 struct wpa_ssid *ssid, unsigned int pref_freq) 4632 { 4633 if (persistent_group && wpa_s->conf->persistent_reconnect) 4634 persistent_group = 2; 4635 4636 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4637 go_intent, own_interface_addr, force_freq, 4638 persistent_group, ssid ? ssid->ssid : NULL, 4639 ssid ? ssid->ssid_len : 0, pref_freq, 4640 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4641 0); 4642 } 4643 4644 4645 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4646 { 4647 wpa_s->p2p_join_scan_count++; 4648 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4649 wpa_s->p2p_join_scan_count); 4650 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4651 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4652 " for join operationg - stop join attempt", 4653 MAC2STR(wpa_s->pending_join_iface_addr)); 4654 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4655 if (wpa_s->p2p_auto_pd) { 4656 wpa_s->p2p_auto_pd = 0; 4657 wpa_msg_global(wpa_s, MSG_INFO, 4658 P2P_EVENT_PROV_DISC_FAILURE 4659 " p2p_dev_addr=" MACSTR " status=N/A", 4660 MAC2STR(wpa_s->pending_join_dev_addr)); 4661 return; 4662 } 4663 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4664 P2P_EVENT_GROUP_FORMATION_FAILURE); 4665 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4666 } 4667 } 4668 4669 4670 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4671 { 4672 int res; 4673 unsigned int num, i; 4674 struct wpa_used_freq_data *freqs; 4675 4676 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4677 /* Multiple channels are supported and not all are in use */ 4678 return 0; 4679 } 4680 4681 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4682 sizeof(struct wpa_used_freq_data)); 4683 if (!freqs) 4684 return 1; 4685 4686 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4687 wpa_s->num_multichan_concurrent); 4688 4689 for (i = 0; i < num; i++) { 4690 if (freqs[i].freq == freq) { 4691 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4692 freq); 4693 res = 0; 4694 goto exit_free; 4695 } 4696 } 4697 4698 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4699 res = 1; 4700 4701 exit_free: 4702 os_free(freqs); 4703 return res; 4704 } 4705 4706 4707 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4708 const u8 *peer_dev_addr) 4709 { 4710 struct wpa_bss *bss; 4711 int updated; 4712 4713 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4714 if (bss == NULL) 4715 return -1; 4716 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4717 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4718 "last scan"); 4719 return 0; 4720 } 4721 4722 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4723 &bss->last_update); 4724 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4725 "%ld.%06ld (%supdated in last scan)", 4726 bss->last_update.sec, bss->last_update.usec, 4727 updated ? "": "not "); 4728 4729 return updated; 4730 } 4731 4732 4733 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4734 struct wpa_scan_results *scan_res) 4735 { 4736 struct wpa_bss *bss = NULL; 4737 int freq; 4738 u8 iface_addr[ETH_ALEN]; 4739 4740 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4741 4742 if (wpa_s->global->p2p_disabled) 4743 return; 4744 4745 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4746 scan_res ? (int) scan_res->num : -1, 4747 wpa_s->p2p_auto_join ? "auto_" : ""); 4748 4749 if (scan_res) 4750 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4751 4752 if (wpa_s->p2p_auto_pd) { 4753 int join = wpas_p2p_peer_go(wpa_s, 4754 wpa_s->pending_join_dev_addr); 4755 if (join == 0 && 4756 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4757 wpa_s->auto_pd_scan_retry++; 4758 bss = wpa_bss_get_bssid_latest( 4759 wpa_s, wpa_s->pending_join_dev_addr); 4760 if (bss) { 4761 freq = bss->freq; 4762 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4763 "the peer " MACSTR " at %d MHz", 4764 wpa_s->auto_pd_scan_retry, 4765 MAC2STR(wpa_s-> 4766 pending_join_dev_addr), 4767 freq); 4768 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4769 return; 4770 } 4771 } 4772 4773 if (join < 0) 4774 join = 0; 4775 4776 wpa_s->p2p_auto_pd = 0; 4777 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4778 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4779 MAC2STR(wpa_s->pending_join_dev_addr), join); 4780 if (p2p_prov_disc_req(wpa_s->global->p2p, 4781 wpa_s->pending_join_dev_addr, NULL, 4782 wpa_s->pending_pd_config_methods, join, 4783 0, wpa_s->user_initiated_pd) < 0) { 4784 wpa_s->p2p_auto_pd = 0; 4785 wpa_msg_global(wpa_s, MSG_INFO, 4786 P2P_EVENT_PROV_DISC_FAILURE 4787 " p2p_dev_addr=" MACSTR " status=N/A", 4788 MAC2STR(wpa_s->pending_join_dev_addr)); 4789 } 4790 return; 4791 } 4792 4793 if (wpa_s->p2p_auto_join) { 4794 int join = wpas_p2p_peer_go(wpa_s, 4795 wpa_s->pending_join_dev_addr); 4796 if (join < 0) { 4797 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4798 "running a GO -> use GO Negotiation"); 4799 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4800 P2P_EVENT_FALLBACK_TO_GO_NEG 4801 "reason=peer-not-running-GO"); 4802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4803 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4804 wpa_s->p2p_persistent_group, 0, 0, 0, 4805 wpa_s->p2p_go_intent, 4806 wpa_s->p2p_connect_freq, 4807 wpa_s->p2p_go_vht_center_freq2, 4808 wpa_s->p2p_persistent_id, 4809 wpa_s->p2p_pd_before_go_neg, 4810 wpa_s->p2p_go_ht40, 4811 wpa_s->p2p_go_vht, 4812 wpa_s->p2p_go_max_oper_chwidth, 4813 NULL, 0); 4814 return; 4815 } 4816 4817 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4818 "try to join the group", join ? "" : 4819 " in older scan"); 4820 if (!join) { 4821 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4822 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4823 wpa_s->p2p_fallback_to_go_neg = 1; 4824 } 4825 } 4826 4827 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4828 wpa_s->pending_join_iface_addr); 4829 if (freq < 0 && 4830 p2p_get_interface_addr(wpa_s->global->p2p, 4831 wpa_s->pending_join_dev_addr, 4832 iface_addr) == 0 && 4833 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4834 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4835 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4836 "address for join from " MACSTR " to " MACSTR 4837 " based on newly discovered P2P peer entry", 4838 MAC2STR(wpa_s->pending_join_iface_addr), 4839 MAC2STR(iface_addr)); 4840 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4841 ETH_ALEN); 4842 4843 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4844 wpa_s->pending_join_iface_addr); 4845 } 4846 if (freq >= 0) { 4847 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4848 "from P2P peer table: %d MHz", freq); 4849 } 4850 if (wpa_s->p2p_join_ssid_len) { 4851 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4852 MACSTR " and SSID %s", 4853 MAC2STR(wpa_s->pending_join_iface_addr), 4854 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4855 wpa_s->p2p_join_ssid_len)); 4856 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4857 wpa_s->p2p_join_ssid, 4858 wpa_s->p2p_join_ssid_len); 4859 } else if (!bss) { 4860 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4861 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4862 bss = wpa_bss_get_bssid_latest(wpa_s, 4863 wpa_s->pending_join_iface_addr); 4864 } 4865 if (bss) { 4866 u8 dev_addr[ETH_ALEN]; 4867 4868 freq = bss->freq; 4869 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4870 "from BSS table: %d MHz (SSID %s)", freq, 4871 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4872 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 4873 dev_addr) == 0 && 4874 os_memcmp(wpa_s->pending_join_dev_addr, 4875 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 4876 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 4877 ETH_ALEN) != 0) { 4878 wpa_printf(MSG_DEBUG, 4879 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 4880 MAC2STR(dev_addr), 4881 MAC2STR(wpa_s->pending_join_dev_addr)); 4882 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 4883 ETH_ALEN); 4884 } 4885 } 4886 if (freq > 0) { 4887 u16 method; 4888 4889 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4890 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4891 P2P_EVENT_GROUP_FORMATION_FAILURE 4892 "reason=FREQ_CONFLICT"); 4893 wpas_notify_p2p_group_formation_failure( 4894 wpa_s, "FREQ_CONFLICT"); 4895 return; 4896 } 4897 4898 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4899 "prior to joining an existing group (GO " MACSTR 4900 " freq=%u MHz)", 4901 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4902 wpa_s->pending_pd_before_join = 1; 4903 4904 switch (wpa_s->pending_join_wps_method) { 4905 case WPS_PIN_DISPLAY: 4906 method = WPS_CONFIG_KEYPAD; 4907 break; 4908 case WPS_PIN_KEYPAD: 4909 method = WPS_CONFIG_DISPLAY; 4910 break; 4911 case WPS_PBC: 4912 method = WPS_CONFIG_PUSHBUTTON; 4913 break; 4914 case WPS_P2PS: 4915 method = WPS_CONFIG_P2PS; 4916 break; 4917 default: 4918 method = 0; 4919 break; 4920 } 4921 4922 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4923 wpa_s->pending_join_dev_addr) == 4924 method)) { 4925 /* 4926 * We have already performed provision discovery for 4927 * joining the group. Proceed directly to join 4928 * operation without duplicated provision discovery. */ 4929 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4930 "with " MACSTR " already done - proceed to " 4931 "join", 4932 MAC2STR(wpa_s->pending_join_dev_addr)); 4933 wpa_s->pending_pd_before_join = 0; 4934 goto start; 4935 } 4936 4937 if (p2p_prov_disc_req(wpa_s->global->p2p, 4938 wpa_s->pending_join_dev_addr, 4939 NULL, method, 1, 4940 freq, wpa_s->user_initiated_pd) < 0) { 4941 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4942 "Discovery Request before joining an " 4943 "existing group"); 4944 wpa_s->pending_pd_before_join = 0; 4945 goto start; 4946 } 4947 return; 4948 } 4949 4950 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4951 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4952 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4953 wpas_p2p_check_join_scan_limit(wpa_s); 4954 return; 4955 4956 start: 4957 /* Start join operation immediately */ 4958 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid, 4959 wpa_s->p2p_join_ssid_len); 4960 } 4961 4962 4963 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4964 const u8 *ssid, size_t ssid_len) 4965 { 4966 int ret; 4967 struct wpa_driver_scan_params params; 4968 struct wpabuf *wps_ie, *ies; 4969 size_t ielen; 4970 int freqs[2] = { 0, 0 }; 4971 unsigned int bands; 4972 4973 os_memset(¶ms, 0, sizeof(params)); 4974 4975 /* P2P Wildcard SSID */ 4976 params.num_ssids = 1; 4977 if (ssid && ssid_len) { 4978 params.ssids[0].ssid = ssid; 4979 params.ssids[0].ssid_len = ssid_len; 4980 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4981 wpa_s->p2p_join_ssid_len = ssid_len; 4982 } else { 4983 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4984 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4985 wpa_s->p2p_join_ssid_len = 0; 4986 } 4987 4988 wpa_s->wps->dev.p2p = 1; 4989 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4990 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4991 NULL); 4992 if (wps_ie == NULL) { 4993 wpas_p2p_scan_res_join(wpa_s, NULL); 4994 return; 4995 } 4996 4997 if (!freq) { 4998 int oper_freq; 4999 /* 5000 * If freq is not provided, check the operating freq of the GO 5001 * and use a single channel scan on if possible. 5002 */ 5003 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 5004 wpa_s->pending_join_iface_addr); 5005 if (oper_freq > 0) 5006 freq = oper_freq; 5007 } 5008 if (freq > 0) { 5009 freqs[0] = freq; 5010 params.freqs = freqs; 5011 } 5012 5013 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 5014 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 5015 if (ies == NULL) { 5016 wpabuf_free(wps_ie); 5017 wpas_p2p_scan_res_join(wpa_s, NULL); 5018 return; 5019 } 5020 wpabuf_put_buf(ies, wps_ie); 5021 wpabuf_free(wps_ie); 5022 5023 bands = wpas_get_bands(wpa_s, freqs); 5024 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 5025 5026 params.p2p_probe = 1; 5027 params.extra_ies = wpabuf_head(ies); 5028 params.extra_ies_len = wpabuf_len(ies); 5029 5030 if (wpa_s->clear_driver_scan_cache) { 5031 wpa_printf(MSG_DEBUG, 5032 "Request driver to clear scan cache due to local BSS flush"); 5033 params.only_new_results = 1; 5034 } 5035 5036 /* 5037 * Run a scan to update BSS table and start Provision Discovery once 5038 * the new scan results become available. 5039 */ 5040 ret = wpa_drv_scan(wpa_s, ¶ms); 5041 if (!ret) { 5042 os_get_reltime(&wpa_s->scan_trigger_time); 5043 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 5044 wpa_s->own_scan_requested = 1; 5045 wpa_s->clear_driver_scan_cache = 0; 5046 } 5047 5048 wpabuf_free(ies); 5049 5050 if (ret) { 5051 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5052 "try again later"); 5053 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5054 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5055 wpas_p2p_check_join_scan_limit(wpa_s); 5056 } 5057 } 5058 5059 5060 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5061 { 5062 struct wpa_supplicant *wpa_s = eloop_ctx; 5063 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5064 } 5065 5066 5067 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5068 const u8 *dev_addr, enum p2p_wps_method wps_method, 5069 int auto_join, int op_freq, 5070 const u8 *ssid, size_t ssid_len) 5071 { 5072 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5073 MACSTR " dev " MACSTR " op_freq=%d)%s", 5074 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5075 auto_join ? " (auto_join)" : ""); 5076 if (ssid && ssid_len) { 5077 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5078 wpa_ssid_txt(ssid, ssid_len)); 5079 } 5080 5081 wpa_s->p2p_auto_pd = 0; 5082 wpa_s->p2p_auto_join = !!auto_join; 5083 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5084 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5085 wpa_s->pending_join_wps_method = wps_method; 5086 5087 /* Make sure we are not running find during connection establishment */ 5088 wpas_p2p_stop_find(wpa_s); 5089 5090 wpa_s->p2p_join_scan_count = 0; 5091 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5092 return 0; 5093 } 5094 5095 5096 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5097 const u8 *ssid, size_t ssid_len) 5098 { 5099 struct wpa_supplicant *group; 5100 struct p2p_go_neg_results res; 5101 struct wpa_bss *bss; 5102 5103 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5104 if (group == NULL) 5105 return -1; 5106 if (group != wpa_s) { 5107 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5108 sizeof(group->p2p_pin)); 5109 group->p2p_wps_method = wpa_s->p2p_wps_method; 5110 } else { 5111 /* 5112 * Need to mark the current interface for p2p_group_formation 5113 * when a separate group interface is not used. This is needed 5114 * to allow p2p_cancel stop a pending p2p_connect-join. 5115 * wpas_p2p_init_group_interface() addresses this for the case 5116 * where a separate group interface is used. 5117 */ 5118 wpa_s->global->p2p_group_formation = wpa_s; 5119 } 5120 5121 group->p2p_in_provisioning = 1; 5122 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5123 5124 os_memset(&res, 0, sizeof(res)); 5125 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5126 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5127 ETH_ALEN); 5128 res.wps_method = wpa_s->pending_join_wps_method; 5129 if (freq && ssid && ssid_len) { 5130 res.freq = freq; 5131 res.ssid_len = ssid_len; 5132 os_memcpy(res.ssid, ssid, ssid_len); 5133 } else { 5134 if (ssid && ssid_len) { 5135 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 5136 ssid, ssid_len); 5137 } else { 5138 bss = wpa_bss_get_bssid_latest( 5139 wpa_s, wpa_s->pending_join_iface_addr); 5140 } 5141 if (bss) { 5142 res.freq = bss->freq; 5143 res.ssid_len = bss->ssid_len; 5144 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5145 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5146 bss->freq, 5147 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5148 } else if (ssid && ssid_len) { 5149 res.ssid_len = ssid_len; 5150 os_memcpy(res.ssid, ssid, ssid_len); 5151 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)", 5152 wpa_ssid_txt(ssid, ssid_len)); 5153 } 5154 } 5155 5156 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5157 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5158 "starting client"); 5159 wpa_drv_cancel_remain_on_channel(wpa_s); 5160 wpa_s->off_channel_freq = 0; 5161 wpa_s->roc_waiting_drv_freq = 0; 5162 } 5163 wpas_start_wps_enrollee(group, &res); 5164 5165 /* 5166 * Allow a longer timeout for join-a-running-group than normal 15 5167 * second group formation timeout since the GO may not have authorized 5168 * our connection yet. 5169 */ 5170 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5171 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5172 wpa_s, NULL); 5173 5174 return 0; 5175 } 5176 5177 5178 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5179 int *force_freq, int *pref_freq, int go, 5180 unsigned int *pref_freq_list, 5181 unsigned int *num_pref_freq) 5182 { 5183 struct wpa_used_freq_data *freqs; 5184 int res, best_freq, num_unused; 5185 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5186 5187 max_pref_freq = *num_pref_freq; 5188 *num_pref_freq = 0; 5189 5190 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5191 sizeof(struct wpa_used_freq_data)); 5192 if (!freqs) 5193 return -1; 5194 5195 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5196 wpa_s->num_multichan_concurrent); 5197 5198 /* 5199 * It is possible that the total number of used frequencies is bigger 5200 * than the number of frequencies used for P2P, so get the system wide 5201 * number of unused frequencies. 5202 */ 5203 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5204 5205 wpa_printf(MSG_DEBUG, 5206 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5207 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5208 5209 if (freq > 0) { 5210 int ret; 5211 if (go) 5212 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5213 else 5214 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5215 if (!ret) { 5216 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5217 ieee80211_is_dfs(freq)) { 5218 /* 5219 * If freq is a DFS channel and DFS is offloaded 5220 * to the driver, allow P2P GO to use it. 5221 */ 5222 wpa_printf(MSG_DEBUG, 5223 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5224 freq); 5225 } else { 5226 wpa_printf(MSG_DEBUG, 5227 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5228 freq); 5229 res = -3; 5230 goto exit_free; 5231 } 5232 } 5233 5234 for (i = 0; i < num; i++) { 5235 if (freqs[i].freq == freq) 5236 freq_in_use = 1; 5237 } 5238 5239 if (num_unused <= 0 && !freq_in_use) { 5240 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5241 freq); 5242 res = -2; 5243 goto exit_free; 5244 } 5245 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5246 "requested channel (%u MHz)", freq); 5247 *force_freq = freq; 5248 goto exit_ok; 5249 } 5250 5251 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5252 5253 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5254 enum wpa_driver_if_type iface_type; 5255 5256 if (go) 5257 iface_type = WPA_IF_P2P_GO; 5258 else 5259 iface_type = WPA_IF_P2P_CLIENT; 5260 5261 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5262 best_freq, go); 5263 5264 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5265 &max_pref_freq, 5266 pref_freq_list); 5267 if (!res && max_pref_freq > 0) { 5268 *num_pref_freq = max_pref_freq; 5269 i = 0; 5270 while (i < *num_pref_freq && 5271 (!p2p_supported_freq(wpa_s->global->p2p, 5272 pref_freq_list[i]) || 5273 wpas_p2p_disallowed_freq(wpa_s->global, 5274 pref_freq_list[i]))) { 5275 wpa_printf(MSG_DEBUG, 5276 "P2P: preferred_freq_list[%d]=%d is disallowed", 5277 i, pref_freq_list[i]); 5278 i++; 5279 } 5280 if (i != *num_pref_freq) { 5281 best_freq = pref_freq_list[i]; 5282 wpa_printf(MSG_DEBUG, 5283 "P2P: Using preferred_freq_list[%d]=%d", 5284 i, best_freq); 5285 } else { 5286 wpa_printf(MSG_DEBUG, 5287 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5288 *num_pref_freq = 0; 5289 } 5290 } else { 5291 wpa_printf(MSG_DEBUG, 5292 "P2P: No preferred frequency list available"); 5293 } 5294 } 5295 5296 /* We have a candidate frequency to use */ 5297 if (best_freq > 0) { 5298 if (*pref_freq == 0 && num_unused > 0) { 5299 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5300 best_freq); 5301 *pref_freq = best_freq; 5302 } else { 5303 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5304 best_freq); 5305 *force_freq = best_freq; 5306 } 5307 } else if (num_unused > 0) { 5308 wpa_printf(MSG_DEBUG, 5309 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5310 *force_freq = 0; 5311 } else { 5312 wpa_printf(MSG_DEBUG, 5313 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5314 res = -2; 5315 goto exit_free; 5316 } 5317 5318 exit_ok: 5319 res = 0; 5320 exit_free: 5321 os_free(freqs); 5322 return res; 5323 } 5324 5325 5326 /** 5327 * wpas_p2p_connect - Request P2P Group Formation to be started 5328 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5329 * @peer_addr: Address of the peer P2P Device 5330 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5331 * @persistent_group: Whether to create a persistent group 5332 * @auto_join: Whether to select join vs. GO Negotiation automatically 5333 * @join: Whether to join an existing group (as a client) instead of starting 5334 * Group Owner negotiation; @peer_addr is BSSID in that case 5335 * @auth: Whether to only authorize the connection instead of doing that and 5336 * initiating Group Owner negotiation 5337 * @go_intent: GO Intent or -1 to use default 5338 * @freq: Frequency for the group or 0 for auto-selection 5339 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5340 * @persistent_id: Persistent group credentials to use for forcing GO 5341 * parameters or -1 to generate new values (SSID/passphrase) 5342 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5343 * interoperability workaround when initiating group formation 5344 * @ht40: Start GO with 40 MHz channel width 5345 * @vht: Start GO with VHT support 5346 * @vht_chwidth: Channel width supported by GO operating with VHT support 5347 * (VHT_CHANWIDTH_*). 5348 * @group_ssid: Specific Group SSID for join or %NULL if not set 5349 * @group_ssid_len: Length of @group_ssid in octets 5350 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5351 * failure, -2 on failure due to channel not currently available, 5352 * -3 if forced channel is not supported 5353 */ 5354 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5355 const char *pin, enum p2p_wps_method wps_method, 5356 int persistent_group, int auto_join, int join, int auth, 5357 int go_intent, int freq, unsigned int vht_center_freq2, 5358 int persistent_id, int pd, int ht40, int vht, 5359 unsigned int vht_chwidth, const u8 *group_ssid, 5360 size_t group_ssid_len) 5361 { 5362 int force_freq = 0, pref_freq = 0; 5363 int ret = 0, res; 5364 enum wpa_driver_if_type iftype; 5365 const u8 *if_addr; 5366 struct wpa_ssid *ssid = NULL; 5367 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5368 5369 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5370 return -1; 5371 5372 if (persistent_id >= 0) { 5373 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5374 if (ssid == NULL || ssid->disabled != 2 || 5375 ssid->mode != WPAS_MODE_P2P_GO) 5376 return -1; 5377 } 5378 5379 os_free(wpa_s->global->add_psk); 5380 wpa_s->global->add_psk = NULL; 5381 5382 wpa_s->global->p2p_fail_on_wps_complete = 0; 5383 wpa_s->global->pending_p2ps_group = 0; 5384 wpa_s->global->pending_p2ps_group_freq = 0; 5385 wpa_s->p2ps_method_config_any = 0; 5386 5387 if (go_intent < 0) 5388 go_intent = wpa_s->conf->p2p_go_intent; 5389 5390 if (!auth) 5391 wpa_s->p2p_long_listen = 0; 5392 5393 wpa_s->p2p_wps_method = wps_method; 5394 wpa_s->p2p_persistent_group = !!persistent_group; 5395 wpa_s->p2p_persistent_id = persistent_id; 5396 wpa_s->p2p_go_intent = go_intent; 5397 wpa_s->p2p_connect_freq = freq; 5398 wpa_s->p2p_fallback_to_go_neg = 0; 5399 wpa_s->p2p_pd_before_go_neg = !!pd; 5400 wpa_s->p2p_go_ht40 = !!ht40; 5401 wpa_s->p2p_go_vht = !!vht; 5402 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5403 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5404 5405 if (pin) 5406 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5407 else if (wps_method == WPS_PIN_DISPLAY) { 5408 if (wps_generate_pin((unsigned int *) &ret) < 0) 5409 return -1; 5410 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5411 "%08d", ret); 5412 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5413 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5414 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5415 wpa_s->p2p_pin); 5416 } else if (wps_method == WPS_P2PS) { 5417 /* Force the P2Ps default PIN to be used */ 5418 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin)); 5419 } else 5420 wpa_s->p2p_pin[0] = '\0'; 5421 5422 if (join || auto_join) { 5423 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5424 if (auth) { 5425 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5426 "connect a running group from " MACSTR, 5427 MAC2STR(peer_addr)); 5428 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5429 return ret; 5430 } 5431 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5432 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5433 iface_addr) < 0) { 5434 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5435 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5436 dev_addr); 5437 } 5438 if (auto_join) { 5439 os_get_reltime(&wpa_s->p2p_auto_started); 5440 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5441 "%ld.%06ld", 5442 wpa_s->p2p_auto_started.sec, 5443 wpa_s->p2p_auto_started.usec); 5444 } 5445 wpa_s->user_initiated_pd = 1; 5446 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5447 auto_join, freq, 5448 group_ssid, group_ssid_len) < 0) 5449 return -1; 5450 return ret; 5451 } 5452 5453 size = P2P_MAX_PREF_CHANNELS; 5454 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5455 go_intent == 15, pref_freq_list, &size); 5456 if (res) 5457 return res; 5458 wpas_p2p_set_own_freq_preference(wpa_s, 5459 force_freq ? force_freq : pref_freq); 5460 5461 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5462 5463 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5464 5465 if (wpa_s->create_p2p_iface) { 5466 /* Prepare to add a new interface for the group */ 5467 iftype = WPA_IF_P2P_GROUP; 5468 if (go_intent == 15) 5469 iftype = WPA_IF_P2P_GO; 5470 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5471 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5472 "interface for the group"); 5473 return -1; 5474 } 5475 5476 if_addr = wpa_s->pending_interface_addr; 5477 } else { 5478 if (wpa_s->p2p_mgmt) 5479 if_addr = wpa_s->parent->own_addr; 5480 else 5481 if_addr = wpa_s->own_addr; 5482 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5483 } 5484 5485 if (auth) { 5486 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5487 go_intent, if_addr, 5488 force_freq, persistent_group, ssid, 5489 pref_freq) < 0) 5490 return -1; 5491 return ret; 5492 } 5493 5494 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5495 go_intent, if_addr, force_freq, 5496 persistent_group, ssid, pref_freq) < 0) { 5497 if (wpa_s->create_p2p_iface) 5498 wpas_p2p_remove_pending_group_interface(wpa_s); 5499 return -1; 5500 } 5501 return ret; 5502 } 5503 5504 5505 /** 5506 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5507 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5508 * @freq: Frequency of the channel in MHz 5509 * @duration: Duration of the stay on the channel in milliseconds 5510 * 5511 * This callback is called when the driver indicates that it has started the 5512 * requested remain-on-channel duration. 5513 */ 5514 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5515 unsigned int freq, unsigned int duration) 5516 { 5517 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5518 return; 5519 wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)", 5520 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5521 wpa_s->roc_waiting_drv_freq, freq, duration); 5522 if (wpa_s->off_channel_freq && 5523 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5524 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5525 wpa_s->pending_listen_duration); 5526 wpa_s->pending_listen_freq = 0; 5527 } else { 5528 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5529 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5530 freq, duration); 5531 } 5532 } 5533 5534 5535 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5536 { 5537 /* Limit maximum Listen state time based on driver limitation. */ 5538 if (timeout > wpa_s->max_remain_on_chan) 5539 timeout = wpa_s->max_remain_on_chan; 5540 5541 return p2p_listen(wpa_s->global->p2p, timeout); 5542 } 5543 5544 5545 /** 5546 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5547 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5548 * @freq: Frequency of the channel in MHz 5549 * 5550 * This callback is called when the driver indicates that a remain-on-channel 5551 * operation has been completed, i.e., the duration on the requested channel 5552 * has timed out. 5553 */ 5554 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5555 unsigned int freq) 5556 { 5557 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5558 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5559 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5560 wpas_p2p_listen_work_done(wpa_s); 5561 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5562 return; 5563 if (wpa_s->p2p_long_listen > 0) 5564 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5565 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5566 return; /* P2P module started a new operation */ 5567 if (offchannel_pending_action_tx(wpa_s)) 5568 return; 5569 if (wpa_s->p2p_long_listen > 0) { 5570 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5571 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5572 } else { 5573 /* 5574 * When listen duration is over, stop listen & update p2p_state 5575 * to IDLE. 5576 */ 5577 p2p_stop_listen(wpa_s->global->p2p); 5578 } 5579 } 5580 5581 5582 /** 5583 * wpas_p2p_group_remove - Remove a P2P group 5584 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5585 * @ifname: Network interface name of the group interface or "*" to remove all 5586 * groups 5587 * Returns: 0 on success, -1 on failure 5588 * 5589 * This function is used to remove a P2P group. This can be used to disconnect 5590 * from a group in which the local end is a P2P Client or to end a P2P Group in 5591 * case the local end is the Group Owner. If a virtual network interface was 5592 * created for this group, that interface will be removed. Otherwise, only the 5593 * configured P2P group network will be removed from the interface. 5594 */ 5595 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5596 { 5597 struct wpa_global *global = wpa_s->global; 5598 struct wpa_supplicant *calling_wpa_s = wpa_s; 5599 5600 if (os_strcmp(ifname, "*") == 0) { 5601 struct wpa_supplicant *prev; 5602 wpa_s = global->ifaces; 5603 while (wpa_s) { 5604 prev = wpa_s; 5605 wpa_s = wpa_s->next; 5606 if (prev->p2p_group_interface != 5607 NOT_P2P_GROUP_INTERFACE || 5608 (prev->current_ssid && 5609 prev->current_ssid->p2p_group)) 5610 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5611 } 5612 return 0; 5613 } 5614 5615 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5616 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5617 break; 5618 } 5619 5620 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5621 } 5622 5623 5624 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5625 { 5626 unsigned int r; 5627 5628 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5629 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5630 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5631 int res; 5632 5633 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5634 &size, pref_freq_list); 5635 if (!res && size > 0) { 5636 i = 0; 5637 while (i < size && 5638 (!p2p_supported_freq(wpa_s->global->p2p, 5639 pref_freq_list[i]) || 5640 wpas_p2p_disallowed_freq(wpa_s->global, 5641 pref_freq_list[i]))) { 5642 wpa_printf(MSG_DEBUG, 5643 "P2P: preferred_freq_list[%d]=%d is disallowed", 5644 i, pref_freq_list[i]); 5645 i++; 5646 } 5647 if (i != size) { 5648 freq = pref_freq_list[i]; 5649 wpa_printf(MSG_DEBUG, 5650 "P2P: Using preferred_freq_list[%d]=%d", 5651 i, freq); 5652 } else { 5653 wpa_printf(MSG_DEBUG, 5654 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5655 } 5656 } else { 5657 wpa_printf(MSG_DEBUG, 5658 "P2P: No preferred frequency list available"); 5659 } 5660 } 5661 5662 if (freq == 2) { 5663 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5664 "band"); 5665 if (wpa_s->best_24_freq > 0 && 5666 p2p_supported_freq_go(wpa_s->global->p2p, 5667 wpa_s->best_24_freq)) { 5668 freq = wpa_s->best_24_freq; 5669 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5670 "channel: %d MHz", freq); 5671 } else { 5672 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5673 return -1; 5674 freq = 2412 + (r % 3) * 25; 5675 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5676 "channel: %d MHz", freq); 5677 } 5678 } 5679 5680 if (freq == 5) { 5681 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5682 "band"); 5683 if (wpa_s->best_5_freq > 0 && 5684 p2p_supported_freq_go(wpa_s->global->p2p, 5685 wpa_s->best_5_freq)) { 5686 freq = wpa_s->best_5_freq; 5687 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5688 "channel: %d MHz", freq); 5689 } else { 5690 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5691 return -1; 5692 freq = 5180 + (r % 4) * 20; 5693 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5694 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5695 "5 GHz channel for P2P group"); 5696 return -1; 5697 } 5698 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5699 "channel: %d MHz", freq); 5700 } 5701 } 5702 5703 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5704 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5705 ieee80211_is_dfs(freq)) { 5706 /* 5707 * If freq is a DFS channel and DFS is offloaded to the 5708 * driver, allow P2P GO to use it. 5709 */ 5710 wpa_printf(MSG_DEBUG, "P2P: " 5711 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5712 __func__, freq); 5713 return freq; 5714 } 5715 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5716 "(%u MHz) is not supported for P2P uses", 5717 freq); 5718 return -1; 5719 } 5720 5721 return freq; 5722 } 5723 5724 5725 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5726 const struct p2p_channels *channels, 5727 int freq) 5728 { 5729 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5730 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5731 freq_included(wpa_s, channels, freq)) 5732 return 1; 5733 return 0; 5734 } 5735 5736 5737 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5738 struct p2p_go_neg_results *params, 5739 const struct p2p_channels *channels) 5740 { 5741 unsigned int i, r; 5742 5743 /* try all channels in operating class 115 */ 5744 for (i = 0; i < 4; i++) { 5745 params->freq = 5180 + i * 20; 5746 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5747 freq_included(wpa_s, channels, params->freq) && 5748 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5749 goto out; 5750 } 5751 5752 /* try all channels in operating class 124 */ 5753 for (i = 0; i < 4; i++) { 5754 params->freq = 5745 + i * 20; 5755 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5756 freq_included(wpa_s, channels, params->freq) && 5757 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5758 goto out; 5759 } 5760 5761 /* try social channel class 180 channel 2 */ 5762 params->freq = 58320 + 1 * 2160; 5763 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5764 freq_included(wpa_s, channels, params->freq) && 5765 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5766 goto out; 5767 5768 /* try all channels in reg. class 180 */ 5769 for (i = 0; i < 4; i++) { 5770 params->freq = 58320 + i * 2160; 5771 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5772 freq_included(wpa_s, channels, params->freq) && 5773 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5774 goto out; 5775 } 5776 5777 /* try some random selection of the social channels */ 5778 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5779 return; 5780 5781 for (i = 0; i < 3; i++) { 5782 params->freq = 2412 + ((r + i) % 3) * 25; 5783 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5784 goto out; 5785 } 5786 5787 /* try all other channels in operating class 81 */ 5788 for (i = 0; i < 11; i++) { 5789 params->freq = 2412 + i * 5; 5790 5791 /* skip social channels; covered in the previous loop */ 5792 if (params->freq == 2412 || 5793 params->freq == 2437 || 5794 params->freq == 2462) 5795 continue; 5796 5797 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5798 goto out; 5799 } 5800 5801 params->freq = 0; 5802 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5803 return; 5804 out: 5805 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5806 params->freq); 5807 } 5808 5809 5810 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5811 struct p2p_go_neg_results *params, 5812 int freq, int vht_center_freq2, int ht40, 5813 int vht, int max_oper_chwidth, 5814 const struct p2p_channels *channels) 5815 { 5816 struct wpa_used_freq_data *freqs; 5817 unsigned int cand; 5818 unsigned int num, i; 5819 int ignore_no_freqs = 0; 5820 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0; 5821 5822 os_memset(params, 0, sizeof(*params)); 5823 params->role_go = 1; 5824 params->ht40 = ht40; 5825 params->vht = vht; 5826 params->max_oper_chwidth = max_oper_chwidth; 5827 params->vht_center_freq2 = vht_center_freq2; 5828 5829 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5830 sizeof(struct wpa_used_freq_data)); 5831 if (!freqs) 5832 return -1; 5833 5834 num = get_shared_radio_freqs_data(wpa_s, freqs, 5835 wpa_s->num_multichan_concurrent); 5836 5837 if (wpa_s->current_ssid && 5838 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5839 wpa_s->wpa_state == WPA_COMPLETED) { 5840 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5841 __func__); 5842 5843 /* 5844 * If the frequency selection is done for an active P2P GO that 5845 * is not sharing a frequency, allow to select a new frequency 5846 * even if there are no unused frequencies as we are about to 5847 * move the P2P GO so its frequency can be re-used. 5848 */ 5849 for (i = 0; i < num; i++) { 5850 if (freqs[i].freq == wpa_s->current_ssid->frequency && 5851 freqs[i].flags == 0) { 5852 ignore_no_freqs = 1; 5853 break; 5854 } 5855 } 5856 } 5857 5858 /* try using the forced freq */ 5859 if (freq) { 5860 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) || 5861 !freq_included(wpa_s, channels, freq)) { 5862 wpa_printf(MSG_DEBUG, 5863 "P2P: Forced GO freq %d MHz disallowed", 5864 freq); 5865 goto fail; 5866 } 5867 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5868 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5869 ieee80211_is_dfs(freq)) { 5870 /* 5871 * If freq is a DFS channel and DFS is offloaded 5872 * to the driver, allow P2P GO to use it. 5873 */ 5874 wpa_printf(MSG_DEBUG, 5875 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded", 5876 __func__, freq); 5877 } else { 5878 wpa_printf(MSG_DEBUG, 5879 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses", 5880 freq); 5881 goto fail; 5882 } 5883 } 5884 5885 for (i = 0; i < num; i++) { 5886 if (freqs[i].freq == freq) { 5887 wpa_printf(MSG_DEBUG, 5888 "P2P: forced freq (%d MHz) is also shared", 5889 freq); 5890 params->freq = freq; 5891 goto success; 5892 } 5893 } 5894 5895 if (!ignore_no_freqs && !unused_channels) { 5896 wpa_printf(MSG_DEBUG, 5897 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 5898 freq); 5899 goto fail; 5900 } 5901 5902 wpa_printf(MSG_DEBUG, 5903 "P2P: force GO freq (%d MHz) on a free channel", 5904 freq); 5905 params->freq = freq; 5906 goto success; 5907 } 5908 5909 /* consider using one of the shared frequencies */ 5910 if (num && 5911 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) { 5912 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5913 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5914 wpa_printf(MSG_DEBUG, 5915 "P2P: Use shared freq (%d MHz) for GO", 5916 cand); 5917 params->freq = cand; 5918 goto success; 5919 } 5920 5921 /* try using one of the shared freqs */ 5922 for (i = 0; i < num; i++) { 5923 if (wpas_p2p_supported_freq_go(wpa_s, channels, 5924 freqs[i].freq)) { 5925 wpa_printf(MSG_DEBUG, 5926 "P2P: Use shared freq (%d MHz) for GO", 5927 freqs[i].freq); 5928 params->freq = freqs[i].freq; 5929 goto success; 5930 } 5931 } 5932 } 5933 5934 if (!ignore_no_freqs && !unused_channels) { 5935 wpa_printf(MSG_DEBUG, 5936 "P2P: Cannot force GO on any of the channels we are already using"); 5937 goto fail; 5938 } 5939 5940 /* try using the setting from the configuration file */ 5941 if (wpa_s->conf->p2p_oper_reg_class == 81 && 5942 wpa_s->conf->p2p_oper_channel >= 1 && 5943 wpa_s->conf->p2p_oper_channel <= 11 && 5944 wpas_p2p_supported_freq_go( 5945 wpa_s, channels, 5946 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 5947 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 5948 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5949 "frequency %d MHz", params->freq); 5950 goto success; 5951 } 5952 5953 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 5954 wpa_s->conf->p2p_oper_reg_class == 116 || 5955 wpa_s->conf->p2p_oper_reg_class == 117 || 5956 wpa_s->conf->p2p_oper_reg_class == 124 || 5957 wpa_s->conf->p2p_oper_reg_class == 125 || 5958 wpa_s->conf->p2p_oper_reg_class == 126 || 5959 wpa_s->conf->p2p_oper_reg_class == 127) && 5960 wpas_p2p_supported_freq_go(wpa_s, channels, 5961 5000 + 5962 5 * wpa_s->conf->p2p_oper_channel)) { 5963 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 5964 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5965 "frequency %d MHz", params->freq); 5966 goto success; 5967 } 5968 5969 /* Try using best channels */ 5970 if (wpa_s->conf->p2p_oper_channel == 0 && 5971 wpa_s->best_overall_freq > 0 && 5972 wpas_p2p_supported_freq_go(wpa_s, channels, 5973 wpa_s->best_overall_freq)) { 5974 params->freq = wpa_s->best_overall_freq; 5975 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5976 "channel %d MHz", params->freq); 5977 goto success; 5978 } 5979 5980 if (wpa_s->conf->p2p_oper_channel == 0 && 5981 wpa_s->best_24_freq > 0 && 5982 wpas_p2p_supported_freq_go(wpa_s, channels, 5983 wpa_s->best_24_freq)) { 5984 params->freq = wpa_s->best_24_freq; 5985 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 5986 "channel %d MHz", params->freq); 5987 goto success; 5988 } 5989 5990 if (wpa_s->conf->p2p_oper_channel == 0 && 5991 wpa_s->best_5_freq > 0 && 5992 wpas_p2p_supported_freq_go(wpa_s, channels, 5993 wpa_s->best_5_freq)) { 5994 params->freq = wpa_s->best_5_freq; 5995 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 5996 "channel %d MHz", params->freq); 5997 goto success; 5998 } 5999 6000 /* try using preferred channels */ 6001 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 6002 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6003 params->freq = cand; 6004 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 6005 "channels", params->freq); 6006 goto success; 6007 } 6008 6009 /* Try using one of the group common freqs */ 6010 if (wpa_s->p2p_group_common_freqs) { 6011 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6012 cand = wpa_s->p2p_group_common_freqs[i]; 6013 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6014 params->freq = cand; 6015 wpa_printf(MSG_DEBUG, 6016 "P2P: Use freq %d MHz common with the peer", 6017 params->freq); 6018 goto success; 6019 } 6020 } 6021 } 6022 6023 /* no preference, select some channel */ 6024 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 6025 6026 if (params->freq == 0) { 6027 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 6028 goto fail; 6029 } 6030 6031 success: 6032 os_free(freqs); 6033 return 0; 6034 fail: 6035 os_free(freqs); 6036 return -1; 6037 } 6038 6039 6040 static struct wpa_supplicant * 6041 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 6042 int go) 6043 { 6044 struct wpa_supplicant *group_wpa_s; 6045 6046 if (!wpas_p2p_create_iface(wpa_s)) { 6047 if (wpa_s->p2p_mgmt) { 6048 /* 6049 * We may be called on the p2p_dev interface which 6050 * cannot be used for group operations, so always use 6051 * the primary interface. 6052 */ 6053 wpa_s->parent->p2pdev = wpa_s; 6054 wpa_s = wpa_s->parent; 6055 } 6056 wpa_dbg(wpa_s, MSG_DEBUG, 6057 "P2P: Use primary interface for group operations"); 6058 wpa_s->p2p_first_connection_timeout = 0; 6059 if (wpa_s != wpa_s->p2pdev) 6060 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev); 6061 return wpa_s; 6062 } 6063 6064 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 6065 WPA_IF_P2P_CLIENT) < 0) { 6066 wpa_msg_global(wpa_s, MSG_ERROR, 6067 "P2P: Failed to add group interface"); 6068 return NULL; 6069 } 6070 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 6071 if (group_wpa_s == NULL) { 6072 wpa_msg_global(wpa_s, MSG_ERROR, 6073 "P2P: Failed to initialize group interface"); 6074 wpas_p2p_remove_pending_group_interface(wpa_s); 6075 return NULL; 6076 } 6077 6078 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 6079 group_wpa_s->ifname); 6080 group_wpa_s->p2p_first_connection_timeout = 0; 6081 return group_wpa_s; 6082 } 6083 6084 6085 /** 6086 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 6087 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 6088 * @persistent_group: Whether to create a persistent group 6089 * @freq: Frequency for the group or 0 to indicate no hardcoding 6090 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 6091 * @ht40: Start GO with 40 MHz channel width 6092 * @vht: Start GO with VHT support 6093 * @vht_chwidth: channel bandwidth for GO operating with VHT support 6094 * Returns: 0 on success, -1 on failure 6095 * 6096 * This function creates a new P2P group with the local end as the Group Owner, 6097 * i.e., without using Group Owner Negotiation. 6098 */ 6099 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 6100 int freq, int vht_center_freq2, int ht40, int vht, 6101 int max_oper_chwidth) 6102 { 6103 struct p2p_go_neg_results params; 6104 6105 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6106 return -1; 6107 6108 os_free(wpa_s->global->add_psk); 6109 wpa_s->global->add_psk = NULL; 6110 6111 /* Make sure we are not running find during connection establishment */ 6112 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6113 wpas_p2p_stop_find_oper(wpa_s); 6114 6115 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6116 if (freq < 0) 6117 return -1; 6118 6119 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6120 ht40, vht, max_oper_chwidth, NULL)) 6121 return -1; 6122 6123 p2p_go_params(wpa_s->global->p2p, ¶ms); 6124 params.persistent_group = persistent_group; 6125 6126 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6127 if (wpa_s == NULL) 6128 return -1; 6129 wpas_start_wps_go(wpa_s, ¶ms, 0); 6130 6131 return 0; 6132 } 6133 6134 6135 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6136 struct wpa_ssid *params, int addr_allocated, 6137 int freq, int force_scan) 6138 { 6139 struct wpa_ssid *ssid; 6140 6141 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6142 if (wpa_s == NULL) 6143 return -1; 6144 if (force_scan) 6145 os_get_reltime(&wpa_s->scan_min_time); 6146 wpa_s->p2p_last_4way_hs_fail = NULL; 6147 6148 wpa_supplicant_ap_deinit(wpa_s); 6149 6150 ssid = wpa_config_add_network(wpa_s->conf); 6151 if (ssid == NULL) 6152 return -1; 6153 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6154 wpa_config_set_network_defaults(ssid); 6155 ssid->temporary = 1; 6156 ssid->proto = WPA_PROTO_RSN; 6157 ssid->pbss = params->pbss; 6158 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP : 6159 WPA_CIPHER_CCMP; 6160 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 6161 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6162 ssid->ssid = os_malloc(params->ssid_len); 6163 if (ssid->ssid == NULL) { 6164 wpa_config_remove_network(wpa_s->conf, ssid->id); 6165 return -1; 6166 } 6167 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6168 ssid->ssid_len = params->ssid_len; 6169 ssid->p2p_group = 1; 6170 ssid->export_keys = 1; 6171 if (params->psk_set) { 6172 os_memcpy(ssid->psk, params->psk, 32); 6173 ssid->psk_set = 1; 6174 } 6175 if (params->passphrase) 6176 ssid->passphrase = os_strdup(params->passphrase); 6177 6178 wpa_s->show_group_started = 1; 6179 wpa_s->p2p_in_invitation = 1; 6180 wpa_s->p2p_invite_go_freq = freq; 6181 wpa_s->p2p_go_group_formation_completed = 0; 6182 wpa_s->global->p2p_group_formation = wpa_s; 6183 6184 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6185 NULL); 6186 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6187 wpas_p2p_group_formation_timeout, 6188 wpa_s->p2pdev, NULL); 6189 wpa_supplicant_select_network(wpa_s, ssid); 6190 6191 return 0; 6192 } 6193 6194 6195 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6196 struct wpa_ssid *ssid, int addr_allocated, 6197 int force_freq, int neg_freq, 6198 int vht_center_freq2, int ht40, 6199 int vht, int max_oper_chwidth, 6200 const struct p2p_channels *channels, 6201 int connection_timeout, int force_scan) 6202 { 6203 struct p2p_go_neg_results params; 6204 int go = 0, freq; 6205 6206 if (ssid->disabled != 2 || ssid->ssid == NULL) 6207 return -1; 6208 6209 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6210 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6211 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6212 "already running"); 6213 if (go == 0 && 6214 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6215 wpa_s->p2pdev, NULL)) { 6216 /* 6217 * This can happen if Invitation Response frame was lost 6218 * and the peer (GO of a persistent group) tries to 6219 * invite us again. Reschedule the timeout to avoid 6220 * terminating the wait for the connection too early 6221 * since we now know that the peer is still trying to 6222 * invite us instead of having already started the GO. 6223 */ 6224 wpa_printf(MSG_DEBUG, 6225 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6226 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6227 wpas_p2p_group_formation_timeout, 6228 wpa_s->p2pdev, NULL); 6229 } 6230 return 0; 6231 } 6232 6233 os_free(wpa_s->global->add_psk); 6234 wpa_s->global->add_psk = NULL; 6235 6236 /* Make sure we are not running find during connection establishment */ 6237 wpas_p2p_stop_find_oper(wpa_s); 6238 6239 wpa_s->p2p_fallback_to_go_neg = 0; 6240 6241 if (ssid->mode == WPAS_MODE_P2P_GO) { 6242 if (force_freq > 0) { 6243 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6244 if (freq < 0) 6245 return -1; 6246 } else { 6247 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6248 if (freq < 0 || 6249 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6250 freq = 0; 6251 } 6252 } else if (ssid->mode == WPAS_MODE_INFRA) { 6253 freq = neg_freq; 6254 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6255 struct os_reltime now; 6256 struct wpa_bss *bss = 6257 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6258 6259 os_get_reltime(&now); 6260 if (bss && 6261 !os_reltime_expired(&now, &bss->last_update, 5) && 6262 freq_included(wpa_s, channels, bss->freq)) 6263 freq = bss->freq; 6264 else 6265 freq = 0; 6266 } 6267 6268 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6269 force_scan); 6270 } else { 6271 return -1; 6272 } 6273 6274 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6275 ht40, vht, max_oper_chwidth, channels)) 6276 return -1; 6277 6278 params.role_go = 1; 6279 params.psk_set = ssid->psk_set; 6280 if (params.psk_set) 6281 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6282 if (ssid->passphrase) { 6283 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6284 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6285 "persistent group"); 6286 return -1; 6287 } 6288 os_strlcpy(params.passphrase, ssid->passphrase, 6289 sizeof(params.passphrase)); 6290 } 6291 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6292 params.ssid_len = ssid->ssid_len; 6293 params.persistent_group = 1; 6294 6295 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6296 if (wpa_s == NULL) 6297 return -1; 6298 6299 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6300 6301 wpa_s->p2p_first_connection_timeout = connection_timeout; 6302 wpas_start_wps_go(wpa_s, ¶ms, 0); 6303 6304 return 0; 6305 } 6306 6307 6308 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6309 struct wpabuf *proberesp_ies) 6310 { 6311 struct wpa_supplicant *wpa_s = ctx; 6312 if (wpa_s->ap_iface) { 6313 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6314 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6315 wpabuf_free(beacon_ies); 6316 wpabuf_free(proberesp_ies); 6317 return; 6318 } 6319 if (beacon_ies) { 6320 wpabuf_free(hapd->p2p_beacon_ie); 6321 hapd->p2p_beacon_ie = beacon_ies; 6322 } 6323 wpabuf_free(hapd->p2p_probe_resp_ie); 6324 hapd->p2p_probe_resp_ie = proberesp_ies; 6325 } else { 6326 wpabuf_free(beacon_ies); 6327 wpabuf_free(proberesp_ies); 6328 } 6329 wpa_supplicant_ap_update_beacon(wpa_s); 6330 } 6331 6332 6333 static void wpas_p2p_idle_update(void *ctx, int idle) 6334 { 6335 struct wpa_supplicant *wpa_s = ctx; 6336 if (!wpa_s->ap_iface) 6337 return; 6338 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6339 if (idle) { 6340 if (wpa_s->global->p2p_fail_on_wps_complete && 6341 wpa_s->p2p_in_provisioning) { 6342 wpas_p2p_grpform_fail_after_wps(wpa_s); 6343 return; 6344 } 6345 wpas_p2p_set_group_idle_timeout(wpa_s); 6346 } else 6347 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6348 } 6349 6350 6351 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6352 struct wpa_ssid *ssid) 6353 { 6354 struct p2p_group *group; 6355 struct p2p_group_config *cfg; 6356 6357 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6358 !ssid->p2p_group) 6359 return NULL; 6360 6361 cfg = os_zalloc(sizeof(*cfg)); 6362 if (cfg == NULL) 6363 return NULL; 6364 6365 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6366 cfg->persistent_group = 2; 6367 else if (ssid->p2p_persistent_group) 6368 cfg->persistent_group = 1; 6369 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6370 if (wpa_s->max_stations && 6371 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6372 cfg->max_clients = wpa_s->max_stations; 6373 else 6374 cfg->max_clients = wpa_s->conf->max_num_sta; 6375 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6376 cfg->ssid_len = ssid->ssid_len; 6377 cfg->freq = ssid->frequency; 6378 cfg->cb_ctx = wpa_s; 6379 cfg->ie_update = wpas_p2p_ie_update; 6380 cfg->idle_update = wpas_p2p_idle_update; 6381 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start) 6382 != 0; 6383 6384 group = p2p_group_init(wpa_s->global->p2p, cfg); 6385 if (group == NULL) 6386 os_free(cfg); 6387 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6388 p2p_group_notif_formation_done(group); 6389 wpa_s->p2p_group = group; 6390 return group; 6391 } 6392 6393 6394 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6395 int registrar) 6396 { 6397 struct wpa_ssid *ssid = wpa_s->current_ssid; 6398 6399 if (!wpa_s->p2p_in_provisioning) { 6400 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6401 "provisioning not in progress"); 6402 return; 6403 } 6404 6405 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6406 u8 go_dev_addr[ETH_ALEN]; 6407 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6408 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6409 ssid->ssid_len); 6410 /* Clear any stored provisioning info */ 6411 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6412 } 6413 6414 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6415 NULL); 6416 wpa_s->p2p_go_group_formation_completed = 1; 6417 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6418 /* 6419 * Use a separate timeout for initial data connection to 6420 * complete to allow the group to be removed automatically if 6421 * something goes wrong in this step before the P2P group idle 6422 * timeout mechanism is taken into use. 6423 */ 6424 wpa_dbg(wpa_s, MSG_DEBUG, 6425 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6426 P2P_MAX_INITIAL_CONN_WAIT); 6427 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6428 wpas_p2p_group_formation_timeout, 6429 wpa_s->p2pdev, NULL); 6430 /* Complete group formation on successful data connection. */ 6431 wpa_s->p2p_go_group_formation_completed = 0; 6432 } else if (ssid) { 6433 /* 6434 * Use a separate timeout for initial data connection to 6435 * complete to allow the group to be removed automatically if 6436 * the client does not complete data connection successfully. 6437 */ 6438 wpa_dbg(wpa_s, MSG_DEBUG, 6439 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6440 P2P_MAX_INITIAL_CONN_WAIT_GO); 6441 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6442 wpas_p2p_group_formation_timeout, 6443 wpa_s->p2pdev, NULL); 6444 /* 6445 * Complete group formation on first successful data connection 6446 */ 6447 wpa_s->p2p_go_group_formation_completed = 0; 6448 } 6449 if (wpa_s->global->p2p) 6450 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6451 wpas_group_formation_completed(wpa_s, 1, 0); 6452 } 6453 6454 6455 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6456 struct wps_event_fail *fail) 6457 { 6458 if (!wpa_s->p2p_in_provisioning) { 6459 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6460 "provisioning not in progress"); 6461 return; 6462 } 6463 6464 if (wpa_s->go_params) { 6465 p2p_clear_provisioning_info( 6466 wpa_s->global->p2p, 6467 wpa_s->go_params->peer_device_addr); 6468 } 6469 6470 wpas_notify_p2p_wps_failed(wpa_s, fail); 6471 6472 if (wpa_s == wpa_s->global->p2p_group_formation) { 6473 /* 6474 * Allow some time for the failed WPS negotiation exchange to 6475 * complete, but remove the group since group formation cannot 6476 * succeed after provisioning failure. 6477 */ 6478 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6479 wpa_s->global->p2p_fail_on_wps_complete = 1; 6480 eloop_deplete_timeout(0, 50000, 6481 wpas_p2p_group_formation_timeout, 6482 wpa_s->p2pdev, NULL); 6483 } 6484 } 6485 6486 6487 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6488 { 6489 if (!wpa_s->global->p2p_fail_on_wps_complete || 6490 !wpa_s->p2p_in_provisioning) 6491 return 0; 6492 6493 wpas_p2p_grpform_fail_after_wps(wpa_s); 6494 6495 return 1; 6496 } 6497 6498 6499 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6500 const char *config_method, 6501 enum wpas_p2p_prov_disc_use use, 6502 struct p2ps_provision *p2ps_prov) 6503 { 6504 u16 config_methods; 6505 6506 wpa_s->global->pending_p2ps_group = 0; 6507 wpa_s->global->pending_p2ps_group_freq = 0; 6508 wpa_s->p2p_fallback_to_go_neg = 0; 6509 wpa_s->pending_pd_use = NORMAL_PD; 6510 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6511 p2ps_prov->conncap = p2ps_group_capability( 6512 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6513 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6514 6515 wpa_printf(MSG_DEBUG, 6516 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6517 __func__, p2ps_prov->conncap, 6518 p2ps_prov->adv_id, p2ps_prov->conncap, 6519 p2ps_prov->status, p2ps_prov->info); 6520 6521 config_methods = 0; 6522 } else if (os_strncmp(config_method, "display", 7) == 0) 6523 config_methods = WPS_CONFIG_DISPLAY; 6524 else if (os_strncmp(config_method, "keypad", 6) == 0) 6525 config_methods = WPS_CONFIG_KEYPAD; 6526 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6527 os_strncmp(config_method, "pushbutton", 10) == 0) 6528 config_methods = WPS_CONFIG_PUSHBUTTON; 6529 else { 6530 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6531 os_free(p2ps_prov); 6532 return -1; 6533 } 6534 6535 if (use == WPAS_P2P_PD_AUTO) { 6536 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6537 wpa_s->pending_pd_config_methods = config_methods; 6538 wpa_s->p2p_auto_pd = 1; 6539 wpa_s->p2p_auto_join = 0; 6540 wpa_s->pending_pd_before_join = 0; 6541 wpa_s->auto_pd_scan_retry = 0; 6542 wpas_p2p_stop_find(wpa_s); 6543 wpa_s->p2p_join_scan_count = 0; 6544 os_get_reltime(&wpa_s->p2p_auto_started); 6545 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6546 wpa_s->p2p_auto_started.sec, 6547 wpa_s->p2p_auto_started.usec); 6548 wpas_p2p_join_scan(wpa_s, NULL); 6549 return 0; 6550 } 6551 6552 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6553 os_free(p2ps_prov); 6554 return -1; 6555 } 6556 6557 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6558 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6559 0, 1); 6560 } 6561 6562 6563 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6564 char *end) 6565 { 6566 return p2p_scan_result_text(ies, ies_len, buf, end); 6567 } 6568 6569 6570 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6571 { 6572 if (!offchannel_pending_action_tx(wpa_s)) 6573 return; 6574 6575 if (wpa_s->p2p_send_action_work) { 6576 wpas_p2p_free_send_action_work(wpa_s); 6577 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 6578 wpa_s, NULL); 6579 offchannel_send_action_done(wpa_s); 6580 } 6581 6582 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6583 "operation request"); 6584 offchannel_clear_pending_action_tx(wpa_s); 6585 } 6586 6587 6588 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6589 enum p2p_discovery_type type, 6590 unsigned int num_req_dev_types, const u8 *req_dev_types, 6591 const u8 *dev_id, unsigned int search_delay, 6592 u8 seek_cnt, const char **seek_string, int freq) 6593 { 6594 wpas_p2p_clear_pending_action_tx(wpa_s); 6595 wpa_s->p2p_long_listen = 0; 6596 6597 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6598 wpa_s->p2p_in_provisioning) { 6599 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s", 6600 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ? 6601 " (P2P disabled)" : "", 6602 wpa_s->p2p_in_provisioning ? 6603 " (p2p_in_provisioning)" : ""); 6604 return -1; 6605 } 6606 6607 wpa_supplicant_cancel_sched_scan(wpa_s); 6608 6609 return p2p_find(wpa_s->global->p2p, timeout, type, 6610 num_req_dev_types, req_dev_types, dev_id, 6611 search_delay, seek_cnt, seek_string, freq); 6612 } 6613 6614 6615 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6616 struct wpa_scan_results *scan_res) 6617 { 6618 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6619 6620 if (wpa_s->p2p_scan_work) { 6621 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6622 wpa_s->p2p_scan_work = NULL; 6623 radio_work_done(work); 6624 } 6625 6626 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6627 return; 6628 6629 /* 6630 * Indicate that results have been processed so that the P2P module can 6631 * continue pending tasks. 6632 */ 6633 p2p_scan_res_handled(wpa_s->global->p2p); 6634 } 6635 6636 6637 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6638 { 6639 wpas_p2p_clear_pending_action_tx(wpa_s); 6640 wpa_s->p2p_long_listen = 0; 6641 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6642 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6643 6644 if (wpa_s->global->p2p) 6645 p2p_stop_find(wpa_s->global->p2p); 6646 6647 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6648 wpa_printf(MSG_DEBUG, 6649 "P2P: Do not consider the scan results after stop_find"); 6650 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6651 } 6652 } 6653 6654 6655 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6656 { 6657 wpas_p2p_stop_find_oper(wpa_s); 6658 if (!wpa_s->global->pending_group_iface_for_p2ps) 6659 wpas_p2p_remove_pending_group_interface(wpa_s); 6660 } 6661 6662 6663 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6664 { 6665 struct wpa_supplicant *wpa_s = eloop_ctx; 6666 wpa_s->p2p_long_listen = 0; 6667 } 6668 6669 6670 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6671 { 6672 int res; 6673 6674 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6675 return -1; 6676 6677 if (wpa_s->p2p_lo_started) { 6678 wpa_printf(MSG_DEBUG, 6679 "P2P: Cannot start P2P listen, it is offloaded"); 6680 return -1; 6681 } 6682 6683 wpa_supplicant_cancel_sched_scan(wpa_s); 6684 wpas_p2p_clear_pending_action_tx(wpa_s); 6685 6686 if (timeout == 0) { 6687 /* 6688 * This is a request for unlimited Listen state. However, at 6689 * least for now, this is mapped to a Listen state for one 6690 * hour. 6691 */ 6692 timeout = 3600; 6693 } 6694 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6695 wpa_s->p2p_long_listen = 0; 6696 6697 /* 6698 * Stop previous find/listen operation to avoid trying to request a new 6699 * remain-on-channel operation while the driver is still running the 6700 * previous one. 6701 */ 6702 if (wpa_s->global->p2p) 6703 p2p_stop_find(wpa_s->global->p2p); 6704 6705 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6706 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6707 wpa_s->p2p_long_listen = timeout * 1000; 6708 eloop_register_timeout(timeout, 0, 6709 wpas_p2p_long_listen_timeout, 6710 wpa_s, NULL); 6711 } 6712 6713 return res; 6714 } 6715 6716 6717 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6718 u8 *buf, size_t len, int p2p_group) 6719 { 6720 struct wpabuf *p2p_ie; 6721 int ret; 6722 6723 if (wpa_s->global->p2p_disabled) 6724 return -1; 6725 /* 6726 * Advertize mandatory cross connection capability even on 6727 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6728 */ 6729 if (wpa_s->conf->p2p_disabled && p2p_group) 6730 return -1; 6731 if (wpa_s->global->p2p == NULL) 6732 return -1; 6733 if (bss == NULL) 6734 return -1; 6735 6736 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6737 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6738 p2p_group, p2p_ie); 6739 wpabuf_free(p2p_ie); 6740 6741 return ret; 6742 } 6743 6744 6745 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6746 const u8 *dst, const u8 *bssid, 6747 const u8 *ie, size_t ie_len, 6748 unsigned int rx_freq, int ssi_signal) 6749 { 6750 if (wpa_s->global->p2p_disabled) 6751 return 0; 6752 if (wpa_s->global->p2p == NULL) 6753 return 0; 6754 6755 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6756 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) { 6757 case P2P_PREQ_NOT_P2P: 6758 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6759 ssi_signal); 6760 /* fall through */ 6761 case P2P_PREQ_MALFORMED: 6762 case P2P_PREQ_NOT_LISTEN: 6763 case P2P_PREQ_NOT_PROCESSED: 6764 default: /* make gcc happy */ 6765 return 0; 6766 case P2P_PREQ_PROCESSED: 6767 return 1; 6768 } 6769 } 6770 6771 6772 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 6773 const u8 *sa, const u8 *bssid, 6774 u8 category, const u8 *data, size_t len, int freq) 6775 { 6776 if (wpa_s->global->p2p_disabled) 6777 return; 6778 if (wpa_s->global->p2p == NULL) 6779 return; 6780 6781 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 6782 freq); 6783 } 6784 6785 6786 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 6787 { 6788 unsigned int bands; 6789 6790 if (wpa_s->global->p2p_disabled) 6791 return; 6792 if (wpa_s->global->p2p == NULL) 6793 return; 6794 6795 bands = wpas_get_bands(wpa_s, NULL); 6796 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 6797 } 6798 6799 6800 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 6801 { 6802 p2p_group_deinit(wpa_s->p2p_group); 6803 wpa_s->p2p_group = NULL; 6804 6805 wpa_s->ap_configured_cb = NULL; 6806 wpa_s->ap_configured_cb_ctx = NULL; 6807 wpa_s->ap_configured_cb_data = NULL; 6808 wpa_s->connect_without_scan = NULL; 6809 } 6810 6811 6812 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 6813 { 6814 wpa_s->p2p_long_listen = 0; 6815 6816 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6817 return -1; 6818 6819 return p2p_reject(wpa_s->global->p2p, addr); 6820 } 6821 6822 6823 /* Invite to reinvoke a persistent group */ 6824 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6825 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 6826 int vht_center_freq2, int ht40, int vht, int max_chwidth, 6827 int pref_freq) 6828 { 6829 enum p2p_invite_role role; 6830 u8 *bssid = NULL; 6831 int force_freq = 0; 6832 int res; 6833 int no_pref_freq_given = pref_freq == 0; 6834 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6835 6836 wpa_s->global->p2p_invite_group = NULL; 6837 if (peer_addr) 6838 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 6839 else 6840 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 6841 6842 wpa_s->p2p_persistent_go_freq = freq; 6843 wpa_s->p2p_go_ht40 = !!ht40; 6844 wpa_s->p2p_go_vht = !!vht; 6845 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 6846 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 6847 if (ssid->mode == WPAS_MODE_P2P_GO) { 6848 role = P2P_INVITE_ROLE_GO; 6849 if (peer_addr == NULL) { 6850 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 6851 "address in invitation command"); 6852 return -1; 6853 } 6854 if (wpas_p2p_create_iface(wpa_s)) { 6855 if (wpas_p2p_add_group_interface(wpa_s, 6856 WPA_IF_P2P_GO) < 0) { 6857 wpa_printf(MSG_ERROR, "P2P: Failed to " 6858 "allocate a new interface for the " 6859 "group"); 6860 return -1; 6861 } 6862 bssid = wpa_s->pending_interface_addr; 6863 } else if (wpa_s->p2p_mgmt) 6864 bssid = wpa_s->parent->own_addr; 6865 else 6866 bssid = wpa_s->own_addr; 6867 } else { 6868 role = P2P_INVITE_ROLE_CLIENT; 6869 peer_addr = ssid->bssid; 6870 } 6871 wpa_s->pending_invite_ssid_id = ssid->id; 6872 6873 size = P2P_MAX_PREF_CHANNELS; 6874 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6875 role == P2P_INVITE_ROLE_GO, 6876 pref_freq_list, &size); 6877 if (res) 6878 return res; 6879 6880 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6881 return -1; 6882 6883 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 6884 6885 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 6886 no_pref_freq_given && pref_freq > 0 && 6887 wpa_s->num_multichan_concurrent > 1 && 6888 wpas_p2p_num_unused_channels(wpa_s) > 0) { 6889 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 6890 pref_freq); 6891 pref_freq = 0; 6892 } 6893 6894 /* 6895 * Stop any find/listen operations before invitation and possibly 6896 * connection establishment. 6897 */ 6898 wpas_p2p_stop_find_oper(wpa_s); 6899 6900 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6901 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 6902 1, pref_freq, -1); 6903 } 6904 6905 6906 /* Invite to join an active group */ 6907 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 6908 const u8 *peer_addr, const u8 *go_dev_addr) 6909 { 6910 struct wpa_global *global = wpa_s->global; 6911 enum p2p_invite_role role; 6912 u8 *bssid = NULL; 6913 struct wpa_ssid *ssid; 6914 int persistent; 6915 int freq = 0, force_freq = 0, pref_freq = 0; 6916 int res; 6917 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6918 6919 wpa_s->p2p_persistent_go_freq = 0; 6920 wpa_s->p2p_go_ht40 = 0; 6921 wpa_s->p2p_go_vht = 0; 6922 wpa_s->p2p_go_vht_center_freq2 = 0; 6923 wpa_s->p2p_go_max_oper_chwidth = 0; 6924 6925 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 6926 if (os_strcmp(wpa_s->ifname, ifname) == 0) 6927 break; 6928 } 6929 if (wpa_s == NULL) { 6930 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 6931 return -1; 6932 } 6933 6934 ssid = wpa_s->current_ssid; 6935 if (ssid == NULL) { 6936 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 6937 "invitation"); 6938 return -1; 6939 } 6940 6941 wpa_s->global->p2p_invite_group = wpa_s; 6942 persistent = ssid->p2p_persistent_group && 6943 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr, 6944 ssid->ssid, ssid->ssid_len); 6945 6946 if (ssid->mode == WPAS_MODE_P2P_GO) { 6947 role = P2P_INVITE_ROLE_ACTIVE_GO; 6948 bssid = wpa_s->own_addr; 6949 if (go_dev_addr == NULL) 6950 go_dev_addr = wpa_s->global->p2p_dev_addr; 6951 freq = ssid->frequency; 6952 } else { 6953 role = P2P_INVITE_ROLE_CLIENT; 6954 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 6955 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 6956 "invite to current group"); 6957 return -1; 6958 } 6959 bssid = wpa_s->bssid; 6960 if (go_dev_addr == NULL && 6961 !is_zero_ether_addr(wpa_s->go_dev_addr)) 6962 go_dev_addr = wpa_s->go_dev_addr; 6963 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6964 (int) wpa_s->assoc_freq; 6965 } 6966 wpa_s->p2pdev->pending_invite_ssid_id = -1; 6967 6968 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6969 return -1; 6970 6971 size = P2P_MAX_PREF_CHANNELS; 6972 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6973 role == P2P_INVITE_ROLE_ACTIVE_GO, 6974 pref_freq_list, &size); 6975 if (res) 6976 return res; 6977 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 6978 6979 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6980 ssid->ssid, ssid->ssid_len, force_freq, 6981 go_dev_addr, persistent, pref_freq, -1); 6982 } 6983 6984 6985 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 6986 { 6987 struct wpa_ssid *ssid = wpa_s->current_ssid; 6988 u8 go_dev_addr[ETH_ALEN]; 6989 int persistent; 6990 int freq; 6991 u8 ip[3 * 4]; 6992 char ip_addr[100]; 6993 6994 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 6995 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6996 wpa_s->p2pdev, NULL); 6997 } 6998 6999 if (!wpa_s->show_group_started || !ssid) 7000 return; 7001 7002 wpa_s->show_group_started = 0; 7003 if (!wpa_s->p2p_go_group_formation_completed && 7004 wpa_s->global->p2p_group_formation == wpa_s) { 7005 wpa_dbg(wpa_s, MSG_DEBUG, 7006 "P2P: Marking group formation completed on client on data connection"); 7007 wpa_s->p2p_go_group_formation_completed = 1; 7008 wpa_s->global->p2p_group_formation = NULL; 7009 wpa_s->p2p_in_provisioning = 0; 7010 wpa_s->p2p_in_invitation = 0; 7011 } 7012 7013 os_memset(go_dev_addr, 0, ETH_ALEN); 7014 if (ssid->bssid_set) 7015 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 7016 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 7017 ssid->ssid_len); 7018 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 7019 7020 if (wpa_s->global->p2p_group_formation == wpa_s) 7021 wpa_s->global->p2p_group_formation = NULL; 7022 7023 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7024 (int) wpa_s->assoc_freq; 7025 7026 ip_addr[0] = '\0'; 7027 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 7028 int res; 7029 7030 res = os_snprintf(ip_addr, sizeof(ip_addr), 7031 " ip_addr=%u.%u.%u.%u " 7032 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 7033 ip[0], ip[1], ip[2], ip[3], 7034 ip[4], ip[5], ip[6], ip[7], 7035 ip[8], ip[9], ip[10], ip[11]); 7036 if (os_snprintf_error(sizeof(ip_addr), res)) 7037 ip_addr[0] = '\0'; 7038 } 7039 7040 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 7041 ssid->passphrase == NULL && ssid->psk_set ? 7042 ssid->psk : NULL, 7043 ssid->passphrase, go_dev_addr, persistent, 7044 ip_addr); 7045 7046 if (persistent) 7047 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 7048 ssid, go_dev_addr); 7049 7050 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip); 7051 } 7052 7053 7054 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 7055 u32 interval1, u32 duration2, u32 interval2) 7056 { 7057 int ret; 7058 7059 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7060 return -1; 7061 7062 if (wpa_s->wpa_state < WPA_ASSOCIATED || 7063 wpa_s->current_ssid == NULL || 7064 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 7065 return -1; 7066 7067 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 7068 wpa_s->own_addr, wpa_s->assoc_freq, 7069 duration1, interval1, duration2, interval2); 7070 if (ret == 0) 7071 wpa_s->waiting_presence_resp = 1; 7072 7073 return ret; 7074 } 7075 7076 7077 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 7078 unsigned int interval) 7079 { 7080 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7081 return -1; 7082 7083 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 7084 } 7085 7086 7087 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 7088 { 7089 if (wpa_s->current_ssid == NULL) { 7090 /* 7091 * current_ssid can be cleared when P2P client interface gets 7092 * disconnected, so assume this interface was used as P2P 7093 * client. 7094 */ 7095 return 1; 7096 } 7097 return wpa_s->current_ssid->p2p_group && 7098 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 7099 } 7100 7101 7102 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 7103 { 7104 struct wpa_supplicant *wpa_s = eloop_ctx; 7105 7106 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 7107 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 7108 "disabled"); 7109 return; 7110 } 7111 7112 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7113 "group"); 7114 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7115 } 7116 7117 7118 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7119 { 7120 int timeout; 7121 7122 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7123 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7124 7125 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7126 return; 7127 7128 timeout = wpa_s->conf->p2p_group_idle; 7129 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7130 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7131 timeout = P2P_MAX_CLIENT_IDLE; 7132 7133 if (timeout == 0) 7134 return; 7135 7136 if (timeout < 0) { 7137 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7138 timeout = 0; /* special client mode no-timeout */ 7139 else 7140 return; 7141 } 7142 7143 if (wpa_s->p2p_in_provisioning) { 7144 /* 7145 * Use the normal group formation timeout during the 7146 * provisioning phase to avoid terminating this process too 7147 * early due to group idle timeout. 7148 */ 7149 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7150 "during provisioning"); 7151 return; 7152 } 7153 7154 if (wpa_s->show_group_started) { 7155 /* 7156 * Use the normal group formation timeout between the end of 7157 * the provisioning phase and completion of 4-way handshake to 7158 * avoid terminating this process too early due to group idle 7159 * timeout. 7160 */ 7161 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7162 "while waiting for initial 4-way handshake to " 7163 "complete"); 7164 return; 7165 } 7166 7167 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7168 timeout); 7169 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7170 wpa_s, NULL); 7171 } 7172 7173 7174 /* Returns 1 if the interface was removed */ 7175 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7176 u16 reason_code, const u8 *ie, size_t ie_len, 7177 int locally_generated) 7178 { 7179 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7180 return 0; 7181 7182 if (!locally_generated) 7183 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7184 ie_len); 7185 7186 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7187 wpa_s->current_ssid && 7188 wpa_s->current_ssid->p2p_group && 7189 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7190 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7191 "session is ending"); 7192 if (wpas_p2p_group_delete(wpa_s, 7193 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7194 > 0) 7195 return 1; 7196 } 7197 7198 return 0; 7199 } 7200 7201 7202 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7203 u16 reason_code, const u8 *ie, size_t ie_len, 7204 int locally_generated) 7205 { 7206 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7207 return; 7208 7209 if (!locally_generated) 7210 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7211 ie_len); 7212 } 7213 7214 7215 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7216 { 7217 struct p2p_data *p2p = wpa_s->global->p2p; 7218 7219 if (p2p == NULL) 7220 return; 7221 7222 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7223 return; 7224 7225 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7226 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7227 7228 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7229 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7230 7231 if (wpa_s->wps && 7232 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7233 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7234 7235 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7236 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7237 7238 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7239 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7240 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7241 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7242 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7243 } 7244 7245 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7246 p2p_set_sec_dev_types(p2p, 7247 (void *) wpa_s->conf->sec_device_type, 7248 wpa_s->conf->num_sec_device_types); 7249 7250 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7251 int i; 7252 p2p_remove_wps_vendor_extensions(p2p); 7253 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7254 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7255 continue; 7256 p2p_add_wps_vendor_extension( 7257 p2p, wpa_s->conf->wps_vendor_ext[i]); 7258 } 7259 } 7260 7261 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7262 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7263 char country[3]; 7264 country[0] = wpa_s->conf->country[0]; 7265 country[1] = wpa_s->conf->country[1]; 7266 country[2] = 0x04; 7267 p2p_set_country(p2p, country); 7268 } 7269 7270 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7271 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7272 wpa_s->conf->p2p_ssid_postfix ? 7273 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7274 0); 7275 } 7276 7277 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7278 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7279 7280 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7281 u8 reg_class, channel; 7282 int ret; 7283 unsigned int r; 7284 u8 channel_forced; 7285 7286 if (wpa_s->conf->p2p_listen_reg_class && 7287 wpa_s->conf->p2p_listen_channel) { 7288 reg_class = wpa_s->conf->p2p_listen_reg_class; 7289 channel = wpa_s->conf->p2p_listen_channel; 7290 channel_forced = 1; 7291 } else { 7292 reg_class = 81; 7293 /* 7294 * Pick one of the social channels randomly as the 7295 * listen channel. 7296 */ 7297 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7298 channel = 1; 7299 else 7300 channel = 1 + (r % 3) * 5; 7301 channel_forced = 0; 7302 } 7303 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7304 channel_forced); 7305 if (ret) 7306 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7307 "failed: %d", ret); 7308 } 7309 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7310 u8 op_reg_class, op_channel, cfg_op_channel; 7311 int ret = 0; 7312 unsigned int r; 7313 if (wpa_s->conf->p2p_oper_reg_class && 7314 wpa_s->conf->p2p_oper_channel) { 7315 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7316 op_channel = wpa_s->conf->p2p_oper_channel; 7317 cfg_op_channel = 1; 7318 } else { 7319 op_reg_class = 81; 7320 /* 7321 * Use random operation channel from (1, 6, 11) 7322 *if no other preference is indicated. 7323 */ 7324 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7325 op_channel = 1; 7326 else 7327 op_channel = 1 + (r % 3) * 5; 7328 cfg_op_channel = 0; 7329 } 7330 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7331 cfg_op_channel); 7332 if (ret) 7333 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7334 "failed: %d", ret); 7335 } 7336 7337 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7338 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7339 wpa_s->conf->p2p_pref_chan) < 0) { 7340 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7341 "update failed"); 7342 } 7343 7344 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7345 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7346 "update failed"); 7347 } 7348 } 7349 7350 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7351 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7352 } 7353 7354 7355 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7356 int duration) 7357 { 7358 if (!wpa_s->ap_iface) 7359 return -1; 7360 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7361 duration); 7362 } 7363 7364 7365 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7366 { 7367 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7368 return -1; 7369 7370 wpa_s->global->cross_connection = enabled; 7371 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7372 7373 if (!enabled) { 7374 struct wpa_supplicant *iface; 7375 7376 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7377 { 7378 if (iface->cross_connect_enabled == 0) 7379 continue; 7380 7381 iface->cross_connect_enabled = 0; 7382 iface->cross_connect_in_use = 0; 7383 wpa_msg_global(iface->p2pdev, MSG_INFO, 7384 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7385 iface->ifname, 7386 iface->cross_connect_uplink); 7387 } 7388 } 7389 7390 return 0; 7391 } 7392 7393 7394 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7395 { 7396 struct wpa_supplicant *iface; 7397 7398 if (!uplink->global->cross_connection) 7399 return; 7400 7401 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7402 if (!iface->cross_connect_enabled) 7403 continue; 7404 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7405 0) 7406 continue; 7407 if (iface->ap_iface == NULL) 7408 continue; 7409 if (iface->cross_connect_in_use) 7410 continue; 7411 7412 iface->cross_connect_in_use = 1; 7413 wpa_msg_global(iface->p2pdev, MSG_INFO, 7414 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7415 iface->ifname, iface->cross_connect_uplink); 7416 } 7417 } 7418 7419 7420 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7421 { 7422 struct wpa_supplicant *iface; 7423 7424 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7425 if (!iface->cross_connect_enabled) 7426 continue; 7427 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7428 0) 7429 continue; 7430 if (!iface->cross_connect_in_use) 7431 continue; 7432 7433 wpa_msg_global(iface->p2pdev, MSG_INFO, 7434 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7435 iface->ifname, iface->cross_connect_uplink); 7436 iface->cross_connect_in_use = 0; 7437 } 7438 } 7439 7440 7441 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7442 { 7443 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7444 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7445 wpa_s->cross_connect_disallowed) 7446 wpas_p2p_disable_cross_connect(wpa_s); 7447 else 7448 wpas_p2p_enable_cross_connect(wpa_s); 7449 if (!wpa_s->ap_iface && 7450 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7451 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7452 } 7453 7454 7455 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7456 { 7457 wpas_p2p_disable_cross_connect(wpa_s); 7458 if (!wpa_s->ap_iface && 7459 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7460 wpa_s, NULL)) 7461 wpas_p2p_set_group_idle_timeout(wpa_s); 7462 } 7463 7464 7465 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7466 { 7467 struct wpa_supplicant *iface; 7468 7469 if (!wpa_s->global->cross_connection) 7470 return; 7471 7472 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7473 if (iface == wpa_s) 7474 continue; 7475 if (iface->drv_flags & 7476 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7477 continue; 7478 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7479 iface != wpa_s->parent) 7480 continue; 7481 7482 wpa_s->cross_connect_enabled = 1; 7483 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7484 sizeof(wpa_s->cross_connect_uplink)); 7485 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7486 "%s to %s whenever uplink is available", 7487 wpa_s->ifname, wpa_s->cross_connect_uplink); 7488 7489 if (iface->ap_iface || iface->current_ssid == NULL || 7490 iface->current_ssid->mode != WPAS_MODE_INFRA || 7491 iface->cross_connect_disallowed || 7492 iface->wpa_state != WPA_COMPLETED) 7493 break; 7494 7495 wpa_s->cross_connect_in_use = 1; 7496 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 7497 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7498 wpa_s->ifname, wpa_s->cross_connect_uplink); 7499 break; 7500 } 7501 } 7502 7503 7504 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7505 { 7506 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7507 !wpa_s->p2p_in_provisioning) 7508 return 0; /* not P2P client operation */ 7509 7510 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7511 "session overlap"); 7512 if (wpa_s != wpa_s->p2pdev) 7513 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP); 7514 wpas_p2p_group_formation_failed(wpa_s, 0); 7515 return 1; 7516 } 7517 7518 7519 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7520 { 7521 struct wpa_supplicant *wpa_s = eloop_ctx; 7522 wpas_p2p_notif_pbc_overlap(wpa_s); 7523 } 7524 7525 7526 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7527 enum wpas_p2p_channel_update_trig trig) 7528 { 7529 struct p2p_channels chan, cli_chan; 7530 struct wpa_used_freq_data *freqs = NULL; 7531 unsigned int num = wpa_s->num_multichan_concurrent; 7532 7533 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7534 return; 7535 7536 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7537 if (!freqs) 7538 return; 7539 7540 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7541 7542 os_memset(&chan, 0, sizeof(chan)); 7543 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7544 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7545 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7546 "channel list"); 7547 return; 7548 } 7549 7550 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7551 7552 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7553 7554 /* 7555 * The used frequencies map changed, so it is possible that a GO is 7556 * using a channel that is no longer valid for P2P use. It is also 7557 * possible that due to policy consideration, it would be preferable to 7558 * move it to a frequency already used by other station interfaces. 7559 */ 7560 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7561 7562 os_free(freqs); 7563 } 7564 7565 7566 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7567 struct wpa_scan_results *scan_res) 7568 { 7569 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7570 } 7571 7572 7573 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7574 { 7575 struct wpa_global *global = wpa_s->global; 7576 int found = 0; 7577 const u8 *peer; 7578 7579 if (global->p2p == NULL) 7580 return -1; 7581 7582 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7583 7584 if (wpa_s->pending_interface_name[0] && 7585 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7586 found = 1; 7587 7588 peer = p2p_get_go_neg_peer(global->p2p); 7589 if (peer) { 7590 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7591 MACSTR, MAC2STR(peer)); 7592 p2p_unauthorize(global->p2p, peer); 7593 found = 1; 7594 } 7595 7596 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7597 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7598 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7599 found = 1; 7600 } 7601 7602 if (wpa_s->pending_pd_before_join) { 7603 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7604 wpa_s->pending_pd_before_join = 0; 7605 found = 1; 7606 } 7607 7608 wpas_p2p_stop_find(wpa_s); 7609 7610 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7611 if (wpa_s == global->p2p_group_formation && 7612 (wpa_s->p2p_in_provisioning || 7613 wpa_s->parent->pending_interface_type == 7614 WPA_IF_P2P_CLIENT)) { 7615 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7616 "formation found - cancelling", 7617 wpa_s->ifname); 7618 found = 1; 7619 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7620 wpa_s->p2pdev, NULL); 7621 if (wpa_s->p2p_in_provisioning) { 7622 wpas_group_formation_completed(wpa_s, 0, 0); 7623 break; 7624 } 7625 wpas_p2p_group_delete(wpa_s, 7626 P2P_GROUP_REMOVAL_REQUESTED); 7627 break; 7628 } else if (wpa_s->p2p_in_invitation) { 7629 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7630 wpa_s->ifname); 7631 found = 1; 7632 wpas_p2p_group_formation_failed(wpa_s, 0); 7633 break; 7634 } 7635 } 7636 7637 if (!found) { 7638 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7639 return -1; 7640 } 7641 7642 return 0; 7643 } 7644 7645 7646 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7647 { 7648 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7649 return; 7650 7651 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7652 "being available anymore"); 7653 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7654 } 7655 7656 7657 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7658 int freq_24, int freq_5, int freq_overall) 7659 { 7660 struct p2p_data *p2p = wpa_s->global->p2p; 7661 if (p2p == NULL) 7662 return; 7663 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7664 } 7665 7666 7667 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7668 { 7669 u8 peer[ETH_ALEN]; 7670 struct p2p_data *p2p = wpa_s->global->p2p; 7671 7672 if (p2p == NULL) 7673 return -1; 7674 7675 if (hwaddr_aton(addr, peer)) 7676 return -1; 7677 7678 return p2p_unauthorize(p2p, peer); 7679 } 7680 7681 7682 /** 7683 * wpas_p2p_disconnect - Disconnect from a P2P Group 7684 * @wpa_s: Pointer to wpa_supplicant data 7685 * Returns: 0 on success, -1 on failure 7686 * 7687 * This can be used to disconnect from a group in which the local end is a P2P 7688 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7689 * virtual network interface was created for this group, that interface will be 7690 * removed. Otherwise, only the configured P2P group network will be removed 7691 * from the interface. 7692 */ 7693 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7694 { 7695 7696 if (wpa_s == NULL) 7697 return -1; 7698 7699 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7700 -1 : 0; 7701 } 7702 7703 7704 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7705 { 7706 int ret; 7707 7708 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7709 return 0; 7710 7711 ret = p2p_in_progress(wpa_s->global->p2p); 7712 if (ret == 0) { 7713 /* 7714 * Check whether there is an ongoing WPS provisioning step (or 7715 * other parts of group formation) on another interface since 7716 * p2p_in_progress() does not report this to avoid issues for 7717 * scans during such provisioning step. 7718 */ 7719 if (wpa_s->global->p2p_group_formation && 7720 wpa_s->global->p2p_group_formation != wpa_s) { 7721 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7722 "in group formation", 7723 wpa_s->global->p2p_group_formation->ifname); 7724 ret = 1; 7725 } 7726 } 7727 7728 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7729 struct os_reltime now; 7730 os_get_reltime(&now); 7731 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7732 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7733 /* Wait for the first client has expired */ 7734 wpa_s->global->p2p_go_wait_client.sec = 0; 7735 } else { 7736 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7737 ret = 1; 7738 } 7739 } 7740 7741 return ret; 7742 } 7743 7744 7745 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7746 struct wpa_ssid *ssid) 7747 { 7748 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7749 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7750 wpa_s->p2pdev, NULL) > 0) { 7751 /** 7752 * Remove the network by scheduling the group formation 7753 * timeout to happen immediately. The teardown code 7754 * needs to be scheduled to run asynch later so that we 7755 * don't delete data from under ourselves unexpectedly. 7756 * Calling wpas_p2p_group_formation_timeout directly 7757 * causes a series of crashes in WPS failure scenarios. 7758 */ 7759 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7760 "P2P group network getting removed"); 7761 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7762 wpa_s->p2pdev, NULL); 7763 } 7764 } 7765 7766 7767 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 7768 const u8 *addr, const u8 *ssid, 7769 size_t ssid_len) 7770 { 7771 struct wpa_ssid *s; 7772 size_t i; 7773 7774 for (s = wpa_s->conf->ssid; s; s = s->next) { 7775 if (s->disabled != 2) 7776 continue; 7777 if (ssid && 7778 (ssid_len != s->ssid_len || 7779 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 7780 continue; 7781 if (addr == NULL) { 7782 if (s->mode == WPAS_MODE_P2P_GO) 7783 return s; 7784 continue; 7785 } 7786 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 7787 return s; /* peer is GO in the persistent group */ 7788 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 7789 continue; 7790 for (i = 0; i < s->num_p2p_clients; i++) { 7791 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 7792 addr, ETH_ALEN) == 0) 7793 return s; /* peer is P2P client in persistent 7794 * group */ 7795 } 7796 } 7797 7798 return NULL; 7799 } 7800 7801 7802 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 7803 const u8 *addr) 7804 { 7805 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7806 wpa_s->p2pdev, NULL) > 0) { 7807 /* 7808 * This can happen if WPS provisioning step is not terminated 7809 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 7810 * peer was able to connect, there is no need to time out group 7811 * formation after this, though. In addition, this is used with 7812 * the initial connection wait on the GO as a separate formation 7813 * timeout and as such, expected to be hit after the initial WPS 7814 * provisioning step. 7815 */ 7816 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 7817 7818 if (!wpa_s->p2p_go_group_formation_completed && 7819 !wpa_s->group_formation_reported) { 7820 /* 7821 * GO has not yet notified group formation success since 7822 * the WPS step was not completed cleanly. Do that 7823 * notification now since the P2P Client was able to 7824 * connect and as such, must have received the 7825 * credential from the WPS step. 7826 */ 7827 if (wpa_s->global->p2p) 7828 p2p_wps_success_cb(wpa_s->global->p2p, addr); 7829 wpas_group_formation_completed(wpa_s, 1, 0); 7830 } 7831 } 7832 if (!wpa_s->p2p_go_group_formation_completed) { 7833 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 7834 wpa_s->p2p_go_group_formation_completed = 1; 7835 wpa_s->global->p2p_group_formation = NULL; 7836 wpa_s->p2p_in_provisioning = 0; 7837 wpa_s->p2p_in_invitation = 0; 7838 } 7839 wpa_s->global->p2p_go_wait_client.sec = 0; 7840 if (addr == NULL) 7841 return; 7842 wpas_p2p_add_persistent_group_client(wpa_s, addr); 7843 } 7844 7845 7846 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 7847 int group_added) 7848 { 7849 struct wpa_supplicant *group = wpa_s; 7850 int ret = 0; 7851 7852 if (wpa_s->global->p2p_group_formation) 7853 group = wpa_s->global->p2p_group_formation; 7854 wpa_s = wpa_s->global->p2p_init_wpa_s; 7855 offchannel_send_action_done(wpa_s); 7856 if (group_added) 7857 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 7858 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 7859 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 7860 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 7861 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 7862 wpa_s->p2p_go_vht_center_freq2, 7863 wpa_s->p2p_persistent_id, 7864 wpa_s->p2p_pd_before_go_neg, 7865 wpa_s->p2p_go_ht40, 7866 wpa_s->p2p_go_vht, 7867 wpa_s->p2p_go_max_oper_chwidth, NULL, 0); 7868 return ret; 7869 } 7870 7871 7872 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 7873 { 7874 int res; 7875 7876 if (!wpa_s->p2p_fallback_to_go_neg || 7877 wpa_s->p2p_in_provisioning <= 5) 7878 return 0; 7879 7880 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 7881 return 0; /* peer operating as a GO */ 7882 7883 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 7884 "fallback to GO Negotiation"); 7885 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 7886 "reason=GO-not-found"); 7887 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 7888 7889 return res == 1 ? 2 : 1; 7890 } 7891 7892 7893 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 7894 { 7895 struct wpa_supplicant *ifs; 7896 7897 if (wpa_s->wpa_state > WPA_SCANNING) { 7898 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 7899 "concurrent operation", 7900 wpa_s->conf->p2p_search_delay); 7901 return wpa_s->conf->p2p_search_delay; 7902 } 7903 7904 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 7905 radio_list) { 7906 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 7907 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 7908 "delay due to concurrent operation on " 7909 "interface %s", 7910 wpa_s->conf->p2p_search_delay, 7911 ifs->ifname); 7912 return wpa_s->conf->p2p_search_delay; 7913 } 7914 } 7915 7916 return 0; 7917 } 7918 7919 7920 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 7921 struct wpa_ssid *s, const u8 *addr, 7922 int iface_addr) 7923 { 7924 struct psk_list_entry *psk, *tmp; 7925 int changed = 0; 7926 7927 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 7928 list) { 7929 if ((iface_addr && !psk->p2p && 7930 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 7931 (!iface_addr && psk->p2p && 7932 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 7933 wpa_dbg(wpa_s, MSG_DEBUG, 7934 "P2P: Remove persistent group PSK list entry for " 7935 MACSTR " p2p=%u", 7936 MAC2STR(psk->addr), psk->p2p); 7937 dl_list_del(&psk->list); 7938 os_free(psk); 7939 changed++; 7940 } 7941 } 7942 7943 return changed; 7944 } 7945 7946 7947 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 7948 const u8 *p2p_dev_addr, 7949 const u8 *psk, size_t psk_len) 7950 { 7951 struct wpa_ssid *ssid = wpa_s->current_ssid; 7952 struct wpa_ssid *persistent; 7953 struct psk_list_entry *p, *last; 7954 7955 if (psk_len != sizeof(p->psk)) 7956 return; 7957 7958 if (p2p_dev_addr) { 7959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 7960 " p2p_dev_addr=" MACSTR, 7961 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 7962 if (is_zero_ether_addr(p2p_dev_addr)) 7963 p2p_dev_addr = NULL; 7964 } else { 7965 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 7966 MAC2STR(mac_addr)); 7967 } 7968 7969 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 7970 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 7971 /* To be added to persistent group once created */ 7972 if (wpa_s->global->add_psk == NULL) { 7973 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 7974 if (wpa_s->global->add_psk == NULL) 7975 return; 7976 } 7977 p = wpa_s->global->add_psk; 7978 if (p2p_dev_addr) { 7979 p->p2p = 1; 7980 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7981 } else { 7982 p->p2p = 0; 7983 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7984 } 7985 os_memcpy(p->psk, psk, psk_len); 7986 return; 7987 } 7988 7989 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 7990 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 7991 return; 7992 } 7993 7994 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 7995 ssid->ssid_len); 7996 if (!persistent) { 7997 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 7998 return; 7999 } 8000 8001 p = os_zalloc(sizeof(*p)); 8002 if (p == NULL) 8003 return; 8004 if (p2p_dev_addr) { 8005 p->p2p = 1; 8006 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8007 } else { 8008 p->p2p = 0; 8009 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8010 } 8011 os_memcpy(p->psk, psk, psk_len); 8012 8013 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 8014 (last = dl_list_last(&persistent->psk_list, 8015 struct psk_list_entry, list))) { 8016 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 8017 MACSTR " (p2p=%u) to make room for a new one", 8018 MAC2STR(last->addr), last->p2p); 8019 dl_list_del(&last->list); 8020 os_free(last); 8021 } 8022 8023 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent, 8024 p2p_dev_addr ? p2p_dev_addr : mac_addr, 8025 p2p_dev_addr == NULL); 8026 if (p2p_dev_addr) { 8027 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 8028 MACSTR, MAC2STR(p2p_dev_addr)); 8029 } else { 8030 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 8031 MAC2STR(mac_addr)); 8032 } 8033 dl_list_add(&persistent->psk_list, &p->list); 8034 8035 if (wpa_s->p2pdev->conf->update_config && 8036 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 8037 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 8038 } 8039 8040 8041 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 8042 struct wpa_ssid *s, const u8 *addr, 8043 int iface_addr) 8044 { 8045 int res; 8046 8047 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 8048 if (res > 0 && wpa_s->conf->update_config && 8049 wpa_config_write(wpa_s->confname, wpa_s->conf)) 8050 wpa_dbg(wpa_s, MSG_DEBUG, 8051 "P2P: Failed to update configuration"); 8052 } 8053 8054 8055 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 8056 const u8 *peer, int iface_addr) 8057 { 8058 struct hostapd_data *hapd; 8059 struct hostapd_wpa_psk *psk, *prev, *rem; 8060 struct sta_info *sta; 8061 8062 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 8063 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 8064 return; 8065 8066 /* Remove per-station PSK entry */ 8067 hapd = wpa_s->ap_iface->bss[0]; 8068 prev = NULL; 8069 psk = hapd->conf->ssid.wpa_psk; 8070 while (psk) { 8071 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 8072 (!iface_addr && 8073 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 8074 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 8075 MACSTR " iface_addr=%d", 8076 MAC2STR(peer), iface_addr); 8077 if (prev) 8078 prev->next = psk->next; 8079 else 8080 hapd->conf->ssid.wpa_psk = psk->next; 8081 rem = psk; 8082 psk = psk->next; 8083 os_free(rem); 8084 } else { 8085 prev = psk; 8086 psk = psk->next; 8087 } 8088 } 8089 8090 /* Disconnect from group */ 8091 if (iface_addr) 8092 sta = ap_get_sta(hapd, peer); 8093 else 8094 sta = ap_get_sta_p2p(hapd, peer); 8095 if (sta) { 8096 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 8097 " (iface_addr=%d) from group", 8098 MAC2STR(peer), iface_addr); 8099 hostapd_drv_sta_deauth(hapd, sta->addr, 8100 WLAN_REASON_DEAUTH_LEAVING); 8101 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 8102 } 8103 } 8104 8105 8106 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 8107 int iface_addr) 8108 { 8109 struct wpa_ssid *s; 8110 struct wpa_supplicant *w; 8111 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8112 8113 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8114 8115 /* Remove from any persistent group */ 8116 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8117 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8118 continue; 8119 if (!iface_addr) 8120 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8121 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8122 } 8123 8124 /* Remove from any operating group */ 8125 for (w = wpa_s->global->ifaces; w; w = w->next) 8126 wpas_p2p_remove_client_go(w, peer, iface_addr); 8127 } 8128 8129 8130 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8131 { 8132 struct wpa_supplicant *wpa_s = eloop_ctx; 8133 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8134 } 8135 8136 8137 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8138 { 8139 struct wpa_supplicant *wpa_s = eloop_ctx; 8140 8141 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8142 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8143 } 8144 8145 8146 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8147 struct wpa_ssid *ssid) 8148 { 8149 struct wpa_supplicant *iface; 8150 8151 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8152 if (!iface->current_ssid || 8153 iface->current_ssid->frequency == freq || 8154 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8155 !iface->current_ssid->p2p_group)) 8156 continue; 8157 8158 /* Remove the connection with least priority */ 8159 if (!wpas_is_p2p_prioritized(iface)) { 8160 /* STA connection has priority over existing 8161 * P2P connection, so remove the interface. */ 8162 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8163 eloop_register_timeout(0, 0, 8164 wpas_p2p_group_freq_conflict, 8165 iface, NULL); 8166 /* If connection in progress is P2P connection, do not 8167 * proceed for the connection. */ 8168 if (wpa_s == iface) 8169 return -1; 8170 else 8171 return 0; 8172 } else { 8173 /* P2P connection has priority, disable the STA network 8174 */ 8175 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8176 ssid); 8177 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8178 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8179 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8180 ETH_ALEN); 8181 /* If P2P connection is in progress, continue 8182 * connecting...*/ 8183 if (wpa_s == iface) 8184 return 0; 8185 else 8186 return -1; 8187 } 8188 } 8189 8190 return 0; 8191 } 8192 8193 8194 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8195 { 8196 struct wpa_ssid *ssid = wpa_s->current_ssid; 8197 8198 if (ssid == NULL || !ssid->p2p_group) 8199 return 0; 8200 8201 if (wpa_s->p2p_last_4way_hs_fail && 8202 wpa_s->p2p_last_4way_hs_fail == ssid) { 8203 u8 go_dev_addr[ETH_ALEN]; 8204 struct wpa_ssid *persistent; 8205 8206 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8207 ssid->ssid, 8208 ssid->ssid_len) <= 0) { 8209 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8210 goto disconnect; 8211 } 8212 8213 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8214 MACSTR, MAC2STR(go_dev_addr)); 8215 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr, 8216 ssid->ssid, 8217 ssid->ssid_len); 8218 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8219 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8220 goto disconnect; 8221 } 8222 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 8223 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8224 persistent->id); 8225 disconnect: 8226 wpa_s->p2p_last_4way_hs_fail = NULL; 8227 /* 8228 * Remove the group from a timeout to avoid issues with caller 8229 * continuing to use the interface if this is on a P2P group 8230 * interface. 8231 */ 8232 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8233 wpa_s, NULL); 8234 return 1; 8235 } 8236 8237 wpa_s->p2p_last_4way_hs_fail = ssid; 8238 return 0; 8239 } 8240 8241 8242 #ifdef CONFIG_WPS_NFC 8243 8244 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8245 struct wpabuf *p2p) 8246 { 8247 struct wpabuf *ret; 8248 size_t wsc_len; 8249 8250 if (p2p == NULL) { 8251 wpabuf_free(wsc); 8252 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8253 return NULL; 8254 } 8255 8256 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8257 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8258 if (ret == NULL) { 8259 wpabuf_free(wsc); 8260 wpabuf_free(p2p); 8261 return NULL; 8262 } 8263 8264 wpabuf_put_be16(ret, wsc_len); 8265 if (wsc) 8266 wpabuf_put_buf(ret, wsc); 8267 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8268 wpabuf_put_buf(ret, p2p); 8269 8270 wpabuf_free(wsc); 8271 wpabuf_free(p2p); 8272 wpa_hexdump_buf(MSG_DEBUG, 8273 "P2P: Generated NFC connection handover message", ret); 8274 8275 if (ndef && ret) { 8276 struct wpabuf *tmp; 8277 tmp = ndef_build_p2p(ret); 8278 wpabuf_free(ret); 8279 if (tmp == NULL) { 8280 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8281 return NULL; 8282 } 8283 ret = tmp; 8284 } 8285 8286 return ret; 8287 } 8288 8289 8290 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8291 struct wpa_ssid **ssid, u8 *go_dev_addr) 8292 { 8293 struct wpa_supplicant *iface; 8294 8295 if (go_dev_addr) 8296 os_memset(go_dev_addr, 0, ETH_ALEN); 8297 if (ssid) 8298 *ssid = NULL; 8299 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8300 if (iface->wpa_state < WPA_ASSOCIATING || 8301 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8302 !iface->current_ssid->p2p_group || 8303 iface->current_ssid->mode != WPAS_MODE_INFRA) 8304 continue; 8305 if (ssid) 8306 *ssid = iface->current_ssid; 8307 if (go_dev_addr) 8308 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8309 return iface->assoc_freq; 8310 } 8311 return 0; 8312 } 8313 8314 8315 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8316 int ndef) 8317 { 8318 struct wpabuf *wsc, *p2p; 8319 struct wpa_ssid *ssid; 8320 u8 go_dev_addr[ETH_ALEN]; 8321 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8322 8323 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8324 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8325 return NULL; 8326 } 8327 8328 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8329 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8330 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8331 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8332 return NULL; 8333 } 8334 8335 if (cli_freq == 0) { 8336 wsc = wps_build_nfc_handover_req_p2p( 8337 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8338 } else 8339 wsc = NULL; 8340 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8341 go_dev_addr, ssid ? ssid->ssid : NULL, 8342 ssid ? ssid->ssid_len : 0); 8343 8344 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8345 } 8346 8347 8348 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8349 int ndef, int tag) 8350 { 8351 struct wpabuf *wsc, *p2p; 8352 struct wpa_ssid *ssid; 8353 u8 go_dev_addr[ETH_ALEN]; 8354 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8355 8356 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8357 return NULL; 8358 8359 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8360 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8361 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8362 return NULL; 8363 8364 if (cli_freq == 0) { 8365 wsc = wps_build_nfc_handover_sel_p2p( 8366 wpa_s->parent->wps, 8367 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8368 DEV_PW_NFC_CONNECTION_HANDOVER, 8369 wpa_s->conf->wps_nfc_dh_pubkey, 8370 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8371 } else 8372 wsc = NULL; 8373 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8374 go_dev_addr, ssid ? ssid->ssid : NULL, 8375 ssid ? ssid->ssid_len : 0); 8376 8377 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8378 } 8379 8380 8381 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8382 struct p2p_nfc_params *params) 8383 { 8384 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8385 "connection handover (freq=%d)", 8386 params->go_freq); 8387 8388 if (params->go_freq && params->go_ssid_len) { 8389 wpa_s->p2p_wps_method = WPS_NFC; 8390 wpa_s->pending_join_wps_method = WPS_NFC; 8391 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8392 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8393 ETH_ALEN); 8394 return wpas_p2p_join_start(wpa_s, params->go_freq, 8395 params->go_ssid, 8396 params->go_ssid_len); 8397 } 8398 8399 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8400 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8401 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8402 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8403 params->go_ssid_len ? params->go_ssid : NULL, 8404 params->go_ssid_len); 8405 } 8406 8407 8408 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8409 struct p2p_nfc_params *params, int tag) 8410 { 8411 int res, persistent; 8412 struct wpa_ssid *ssid; 8413 8414 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8415 "connection handover"); 8416 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8417 ssid = wpa_s->current_ssid; 8418 if (ssid == NULL) 8419 continue; 8420 if (ssid->mode != WPAS_MODE_P2P_GO) 8421 continue; 8422 if (wpa_s->ap_iface == NULL) 8423 continue; 8424 break; 8425 } 8426 if (wpa_s == NULL) { 8427 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8428 return -1; 8429 } 8430 8431 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 8432 DEV_PW_NFC_CONNECTION_HANDOVER && 8433 !wpa_s->p2pdev->p2p_oob_dev_pw) { 8434 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8435 return -1; 8436 } 8437 res = wpas_ap_wps_add_nfc_pw( 8438 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 8439 wpa_s->p2pdev->p2p_oob_dev_pw, 8440 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 8441 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 8442 if (res) 8443 return res; 8444 8445 if (!tag) { 8446 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8447 return 0; 8448 } 8449 8450 if (!params->peer || 8451 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8452 return 0; 8453 8454 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8455 " to join", MAC2STR(params->peer->p2p_device_addr)); 8456 8457 wpa_s->global->p2p_invite_group = wpa_s; 8458 persistent = ssid->p2p_persistent_group && 8459 wpas_p2p_get_persistent(wpa_s->p2pdev, 8460 params->peer->p2p_device_addr, 8461 ssid->ssid, ssid->ssid_len); 8462 wpa_s->p2pdev->pending_invite_ssid_id = -1; 8463 8464 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8465 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8466 ssid->ssid, ssid->ssid_len, ssid->frequency, 8467 wpa_s->global->p2p_dev_addr, persistent, 0, 8468 wpa_s->p2pdev->p2p_oob_dev_pw_id); 8469 } 8470 8471 8472 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8473 struct p2p_nfc_params *params, 8474 int forced_freq) 8475 { 8476 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8477 "connection handover"); 8478 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8479 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8480 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8481 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8482 NULL, 0); 8483 } 8484 8485 8486 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8487 struct p2p_nfc_params *params, 8488 int forced_freq) 8489 { 8490 int res; 8491 8492 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8493 "connection handover"); 8494 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8495 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8496 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8497 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8498 NULL, 0); 8499 if (res) 8500 return res; 8501 8502 res = wpas_p2p_listen(wpa_s, 60); 8503 if (res) { 8504 p2p_unauthorize(wpa_s->global->p2p, 8505 params->peer->p2p_device_addr); 8506 } 8507 8508 return res; 8509 } 8510 8511 8512 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8513 const struct wpabuf *data, 8514 int sel, int tag, int forced_freq) 8515 { 8516 const u8 *pos, *end; 8517 u16 len, id; 8518 struct p2p_nfc_params params; 8519 int res; 8520 8521 os_memset(¶ms, 0, sizeof(params)); 8522 params.sel = sel; 8523 8524 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8525 8526 pos = wpabuf_head(data); 8527 end = pos + wpabuf_len(data); 8528 8529 if (end - pos < 2) { 8530 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8531 "attributes"); 8532 return -1; 8533 } 8534 len = WPA_GET_BE16(pos); 8535 pos += 2; 8536 if (len > end - pos) { 8537 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8538 "attributes"); 8539 return -1; 8540 } 8541 params.wsc_attr = pos; 8542 params.wsc_len = len; 8543 pos += len; 8544 8545 if (end - pos < 2) { 8546 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8547 "attributes"); 8548 return -1; 8549 } 8550 len = WPA_GET_BE16(pos); 8551 pos += 2; 8552 if (len > end - pos) { 8553 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8554 "attributes"); 8555 return -1; 8556 } 8557 params.p2p_attr = pos; 8558 params.p2p_len = len; 8559 pos += len; 8560 8561 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8562 params.wsc_attr, params.wsc_len); 8563 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8564 params.p2p_attr, params.p2p_len); 8565 if (pos < end) { 8566 wpa_hexdump(MSG_DEBUG, 8567 "P2P: Ignored extra data after P2P attributes", 8568 pos, end - pos); 8569 } 8570 8571 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8572 if (res) 8573 return res; 8574 8575 if (params.next_step == NO_ACTION) 8576 return 0; 8577 8578 if (params.next_step == BOTH_GO) { 8579 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8580 MAC2STR(params.peer->p2p_device_addr)); 8581 return 0; 8582 } 8583 8584 if (params.next_step == PEER_CLIENT) { 8585 if (!is_zero_ether_addr(params.go_dev_addr)) { 8586 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8587 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8588 " ssid=\"%s\"", 8589 MAC2STR(params.peer->p2p_device_addr), 8590 params.go_freq, 8591 MAC2STR(params.go_dev_addr), 8592 wpa_ssid_txt(params.go_ssid, 8593 params.go_ssid_len)); 8594 } else { 8595 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8596 "peer=" MACSTR " freq=%d", 8597 MAC2STR(params.peer->p2p_device_addr), 8598 params.go_freq); 8599 } 8600 return 0; 8601 } 8602 8603 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8604 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8605 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8606 return 0; 8607 } 8608 8609 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8610 wpa_s->p2p_oob_dev_pw = NULL; 8611 8612 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8613 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8614 "received"); 8615 return -1; 8616 } 8617 8618 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8619 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8620 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8621 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8622 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8623 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8624 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8625 8626 if (tag) { 8627 if (id < 0x10) { 8628 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8629 "peer OOB Device Password Id %u", id); 8630 return -1; 8631 } 8632 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8633 "Device Password Id %u", id); 8634 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8635 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8636 params.oob_dev_pw_len - 8637 WPS_OOB_PUBKEY_HASH_LEN - 2); 8638 wpa_s->p2p_oob_dev_pw_id = id; 8639 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8640 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8641 params.oob_dev_pw_len - 8642 WPS_OOB_PUBKEY_HASH_LEN - 2); 8643 if (wpa_s->p2p_oob_dev_pw == NULL) 8644 return -1; 8645 8646 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8647 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8648 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8649 return -1; 8650 } else { 8651 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8652 "without Device Password"); 8653 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8654 } 8655 8656 switch (params.next_step) { 8657 case NO_ACTION: 8658 case BOTH_GO: 8659 case PEER_CLIENT: 8660 /* already covered above */ 8661 return 0; 8662 case JOIN_GROUP: 8663 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8664 case AUTH_JOIN: 8665 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8666 case INIT_GO_NEG: 8667 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8668 case RESP_GO_NEG: 8669 /* TODO: use own OOB Dev Pw */ 8670 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8671 } 8672 8673 return -1; 8674 } 8675 8676 8677 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8678 const struct wpabuf *data, int forced_freq) 8679 { 8680 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8681 return -1; 8682 8683 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8684 } 8685 8686 8687 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8688 const struct wpabuf *req, 8689 const struct wpabuf *sel, int forced_freq) 8690 { 8691 struct wpabuf *tmp; 8692 int ret; 8693 8694 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8695 return -1; 8696 8697 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8698 8699 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8700 wpabuf_head(req), wpabuf_len(req)); 8701 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8702 wpabuf_head(sel), wpabuf_len(sel)); 8703 if (forced_freq) 8704 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8705 tmp = ndef_parse_p2p(init ? sel : req); 8706 if (tmp == NULL) { 8707 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8708 return -1; 8709 } 8710 8711 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8712 forced_freq); 8713 wpabuf_free(tmp); 8714 8715 return ret; 8716 } 8717 8718 8719 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8720 { 8721 const u8 *if_addr; 8722 int go_intent = wpa_s->conf->p2p_go_intent; 8723 struct wpa_supplicant *iface; 8724 8725 if (wpa_s->global->p2p == NULL) 8726 return -1; 8727 8728 if (!enabled) { 8729 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8730 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8731 { 8732 if (!iface->ap_iface) 8733 continue; 8734 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8735 } 8736 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8737 0, NULL); 8738 if (wpa_s->p2p_nfc_tag_enabled) 8739 wpas_p2p_remove_pending_group_interface(wpa_s); 8740 wpa_s->p2p_nfc_tag_enabled = 0; 8741 return 0; 8742 } 8743 8744 if (wpa_s->global->p2p_disabled) 8745 return -1; 8746 8747 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8748 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8749 wpa_s->conf->wps_nfc_dev_pw == NULL || 8750 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8751 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8752 "to allow static handover cases"); 8753 return -1; 8754 } 8755 8756 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8757 8758 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8759 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8760 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8761 if (wpa_s->p2p_oob_dev_pw == NULL) 8762 return -1; 8763 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8764 8765 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 8766 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 8767 /* 8768 * P2P Group Interface present and the command came on group 8769 * interface, so enable the token for the current interface. 8770 */ 8771 wpa_s->create_p2p_iface = 0; 8772 } else { 8773 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 8774 } 8775 8776 if (wpa_s->create_p2p_iface) { 8777 enum wpa_driver_if_type iftype; 8778 /* Prepare to add a new interface for the group */ 8779 iftype = WPA_IF_P2P_GROUP; 8780 if (go_intent == 15) 8781 iftype = WPA_IF_P2P_GO; 8782 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 8783 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 8784 "interface for the group"); 8785 return -1; 8786 } 8787 8788 if_addr = wpa_s->pending_interface_addr; 8789 } else if (wpa_s->p2p_mgmt) 8790 if_addr = wpa_s->parent->own_addr; 8791 else 8792 if_addr = wpa_s->own_addr; 8793 8794 wpa_s->p2p_nfc_tag_enabled = enabled; 8795 8796 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8797 struct hostapd_data *hapd; 8798 if (iface->ap_iface == NULL) 8799 continue; 8800 hapd = iface->ap_iface->bss[0]; 8801 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 8802 hapd->conf->wps_nfc_dh_pubkey = 8803 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 8804 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 8805 hapd->conf->wps_nfc_dh_privkey = 8806 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 8807 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 8808 hapd->conf->wps_nfc_dev_pw = 8809 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8810 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8811 8812 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 8813 wpa_dbg(iface, MSG_DEBUG, 8814 "P2P: Failed to enable NFC Tag for GO"); 8815 } 8816 } 8817 p2p_set_authorized_oob_dev_pw_id( 8818 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 8819 if_addr); 8820 8821 return 0; 8822 } 8823 8824 #endif /* CONFIG_WPS_NFC */ 8825 8826 8827 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 8828 struct wpa_used_freq_data *freqs, 8829 unsigned int num) 8830 { 8831 u8 curr_chan, cand, chan; 8832 unsigned int i; 8833 8834 /* 8835 * If possible, optimize the Listen channel to be a channel that is 8836 * already used by one of the other interfaces. 8837 */ 8838 if (!wpa_s->conf->p2p_optimize_listen_chan) 8839 return; 8840 8841 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 8842 return; 8843 8844 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 8845 for (i = 0, cand = 0; i < num; i++) { 8846 ieee80211_freq_to_chan(freqs[i].freq, &chan); 8847 if (curr_chan == chan) { 8848 cand = 0; 8849 break; 8850 } 8851 8852 if (chan == 1 || chan == 6 || chan == 11) 8853 cand = chan; 8854 } 8855 8856 if (cand) { 8857 wpa_dbg(wpa_s, MSG_DEBUG, 8858 "P2P: Update Listen channel to %u based on operating channel", 8859 cand); 8860 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 8861 } 8862 } 8863 8864 8865 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 8866 { 8867 struct hostapd_config *conf; 8868 struct p2p_go_neg_results params; 8869 struct csa_settings csa_settings; 8870 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8871 int old_freq = current_ssid->frequency; 8872 int ret; 8873 8874 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 8875 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 8876 return -1; 8877 } 8878 8879 /* 8880 * TODO: This function may not always work correctly. For example, 8881 * when we have a running GO and a BSS on a DFS channel. 8882 */ 8883 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8884 wpa_dbg(wpa_s, MSG_DEBUG, 8885 "P2P CSA: Failed to select new frequency for GO"); 8886 return -1; 8887 } 8888 8889 if (current_ssid->frequency == params.freq) { 8890 wpa_dbg(wpa_s, MSG_DEBUG, 8891 "P2P CSA: Selected same frequency - not moving GO"); 8892 return 0; 8893 } 8894 8895 conf = hostapd_config_defaults(); 8896 if (!conf) { 8897 wpa_dbg(wpa_s, MSG_DEBUG, 8898 "P2P CSA: Failed to allocate default config"); 8899 return -1; 8900 } 8901 8902 current_ssid->frequency = params.freq; 8903 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 8904 wpa_dbg(wpa_s, MSG_DEBUG, 8905 "P2P CSA: Failed to create new GO config"); 8906 ret = -1; 8907 goto out; 8908 } 8909 8910 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 8911 wpa_dbg(wpa_s, MSG_DEBUG, 8912 "P2P CSA: CSA to a different band is not supported"); 8913 ret = -1; 8914 goto out; 8915 } 8916 8917 os_memset(&csa_settings, 0, sizeof(csa_settings)); 8918 csa_settings.cs_count = P2P_GO_CSA_COUNT; 8919 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 8920 csa_settings.freq_params.freq = params.freq; 8921 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 8922 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 8923 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 8924 8925 if (conf->ieee80211ac) { 8926 int freq1 = 0, freq2 = 0; 8927 u8 chan, opclass; 8928 8929 if (ieee80211_freq_to_channel_ext(params.freq, 8930 conf->secondary_channel, 8931 conf->vht_oper_chwidth, 8932 &opclass, &chan) == 8933 NUM_HOSTAPD_MODES) { 8934 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 8935 ret = -1; 8936 goto out; 8937 } 8938 8939 if (conf->vht_oper_centr_freq_seg0_idx) 8940 freq1 = ieee80211_chan_to_freq( 8941 NULL, opclass, 8942 conf->vht_oper_centr_freq_seg0_idx); 8943 8944 if (conf->vht_oper_centr_freq_seg1_idx) 8945 freq2 = ieee80211_chan_to_freq( 8946 NULL, opclass, 8947 conf->vht_oper_centr_freq_seg1_idx); 8948 8949 if (freq1 < 0 || freq2 < 0) { 8950 wpa_dbg(wpa_s, MSG_DEBUG, 8951 "P2P CSA: Selected invalid VHT center freqs"); 8952 ret = -1; 8953 goto out; 8954 } 8955 8956 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 8957 csa_settings.freq_params.center_freq1 = freq1; 8958 csa_settings.freq_params.center_freq2 = freq2; 8959 8960 switch (conf->vht_oper_chwidth) { 8961 case VHT_CHANWIDTH_80MHZ: 8962 case VHT_CHANWIDTH_80P80MHZ: 8963 csa_settings.freq_params.bandwidth = 80; 8964 break; 8965 case VHT_CHANWIDTH_160MHZ: 8966 csa_settings.freq_params.bandwidth = 160; 8967 break; 8968 } 8969 } 8970 8971 ret = ap_switch_channel(wpa_s, &csa_settings); 8972 out: 8973 current_ssid->frequency = old_freq; 8974 hostapd_config_free(conf); 8975 return ret; 8976 } 8977 8978 8979 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 8980 { 8981 struct p2p_go_neg_results params; 8982 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8983 8984 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 8985 8986 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 8987 current_ssid->frequency); 8988 8989 /* Stop the AP functionality */ 8990 /* TODO: Should do this in a way that does not indicated to possible 8991 * P2P Clients in the group that the group is terminated. */ 8992 wpa_supplicant_ap_deinit(wpa_s); 8993 8994 /* Reselect the GO frequency */ 8995 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8996 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 8997 wpas_p2p_group_delete(wpa_s, 8998 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8999 return; 9000 } 9001 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 9002 params.freq); 9003 9004 if (params.freq && 9005 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 9006 wpa_printf(MSG_DEBUG, 9007 "P2P: Selected freq (%u MHz) is not valid for P2P", 9008 params.freq); 9009 wpas_p2p_group_delete(wpa_s, 9010 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9011 return; 9012 } 9013 9014 /* Update the frequency */ 9015 current_ssid->frequency = params.freq; 9016 wpa_s->connect_without_scan = current_ssid; 9017 wpa_s->reassociate = 1; 9018 wpa_s->disconnected = 0; 9019 wpa_supplicant_req_scan(wpa_s, 0, 0); 9020 } 9021 9022 9023 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 9024 { 9025 struct wpa_supplicant *wpa_s = eloop_ctx; 9026 9027 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 9028 return; 9029 9030 wpas_p2p_go_update_common_freqs(wpa_s); 9031 9032 /* Do not move GO in the middle of a CSA */ 9033 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9034 wpa_printf(MSG_DEBUG, 9035 "P2P: CSA is in progress - not moving GO"); 9036 return; 9037 } 9038 9039 /* 9040 * First, try a channel switch flow. If it is not supported or fails, 9041 * take down the GO and bring it up again. 9042 */ 9043 if (wpas_p2p_move_go_csa(wpa_s) < 0) 9044 wpas_p2p_move_go_no_csa(wpa_s); 9045 } 9046 9047 9048 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 9049 { 9050 struct wpa_supplicant *wpa_s = eloop_ctx; 9051 struct wpa_used_freq_data *freqs = NULL; 9052 unsigned int num = wpa_s->num_multichan_concurrent; 9053 9054 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 9055 if (!freqs) 9056 return; 9057 9058 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 9059 9060 /* Previous attempt to move a GO was not possible -- try again. */ 9061 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 9062 WPAS_P2P_CHANNEL_UPDATE_ANY); 9063 9064 os_free(freqs); 9065 } 9066 9067 9068 /* 9069 * Consider moving a GO from its currently used frequency: 9070 * 1. It is possible that due to regulatory consideration the frequency 9071 * can no longer be used and there is a need to evacuate the GO. 9072 * 2. It is possible that due to MCC considerations, it would be preferable 9073 * to move the GO to a channel that is currently used by some other 9074 * station interface. 9075 * 9076 * In case a frequency that became invalid is once again valid, cancel a 9077 * previously initiated GO frequency change. 9078 */ 9079 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 9080 struct wpa_used_freq_data *freqs, 9081 unsigned int num) 9082 { 9083 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 9084 unsigned int timeout; 9085 int freq; 9086 int dfs_offload; 9087 9088 wpas_p2p_go_update_common_freqs(wpa_s); 9089 9090 freq = wpa_s->current_ssid->frequency; 9091 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 9092 ieee80211_is_dfs(freq); 9093 for (i = 0, invalid_freq = 0; i < num; i++) { 9094 if (freqs[i].freq == freq) { 9095 flags = freqs[i].flags; 9096 9097 /* The channel is invalid, must change it */ 9098 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) && 9099 !dfs_offload) { 9100 wpa_dbg(wpa_s, MSG_DEBUG, 9101 "P2P: Freq=%d MHz no longer valid for GO", 9102 freq); 9103 invalid_freq = 1; 9104 } 9105 } else if (freqs[i].flags == 0) { 9106 /* Freq is not used by any other station interface */ 9107 continue; 9108 } else if (!p2p_supported_freq(wpa_s->global->p2p, 9109 freqs[i].freq) && !dfs_offload) { 9110 /* Freq is not valid for P2P use cases */ 9111 continue; 9112 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9113 P2P_GO_FREQ_MOVE_SCM) { 9114 policy_move = 1; 9115 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9116 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 9117 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9118 policy_move = 1; 9119 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 9120 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9121 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9122 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9123 policy_move = 1; 9124 } else if ((wpa_s->drv_flags & 9125 WPA_DRIVER_FLAGS_AP_CSA) && 9126 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9127 u8 chan; 9128 9129 /* 9130 * We do not support CSA between bands, so move 9131 * GO only within the same band. 9132 */ 9133 if (wpa_s->ap_iface->current_mode->mode == 9134 ieee80211_freq_to_chan(freqs[i].freq, 9135 &chan)) 9136 policy_move = 1; 9137 } 9138 } 9139 } 9140 9141 wpa_dbg(wpa_s, MSG_DEBUG, 9142 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9143 invalid_freq, policy_move, flags); 9144 9145 /* 9146 * The channel is valid, or we are going to have a policy move, so 9147 * cancel timeout. 9148 */ 9149 if (!invalid_freq || policy_move) { 9150 wpa_dbg(wpa_s, MSG_DEBUG, 9151 "P2P: Cancel a GO move from freq=%d MHz", freq); 9152 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9153 9154 if (wpas_p2p_in_progress(wpa_s)) { 9155 wpa_dbg(wpa_s, MSG_DEBUG, 9156 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9157 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9158 wpa_s, NULL); 9159 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9160 wpas_p2p_reconsider_moving_go, 9161 wpa_s, NULL); 9162 return; 9163 } 9164 } 9165 9166 if (!invalid_freq && (!policy_move || flags != 0)) { 9167 wpa_dbg(wpa_s, MSG_DEBUG, 9168 "P2P: Not initiating a GO frequency change"); 9169 return; 9170 } 9171 9172 /* 9173 * Do not consider moving GO if it is in the middle of a CSA. When the 9174 * CSA is finished this flow should be retriggered. 9175 */ 9176 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9177 wpa_dbg(wpa_s, MSG_DEBUG, 9178 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9179 return; 9180 } 9181 9182 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9183 timeout = P2P_GO_FREQ_CHANGE_TIME; 9184 else 9185 timeout = 0; 9186 9187 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9188 freq, timeout); 9189 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9190 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9191 } 9192 9193 9194 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9195 struct wpa_used_freq_data *freqs, 9196 unsigned int num, 9197 enum wpas_p2p_channel_update_trig trig) 9198 { 9199 struct wpa_supplicant *ifs; 9200 9201 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9202 NULL); 9203 9204 /* 9205 * Travers all the radio interfaces, and for each GO interface, check 9206 * if there is a need to move the GO from the frequency it is using, 9207 * or in case the frequency is valid again, cancel the evacuation flow. 9208 */ 9209 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9210 radio_list) { 9211 if (ifs->current_ssid == NULL || 9212 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9213 continue; 9214 9215 /* 9216 * The GO was just started or completed channel switch, no need 9217 * to move it. 9218 */ 9219 if (wpa_s == ifs && 9220 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9221 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9222 wpa_dbg(wpa_s, MSG_DEBUG, 9223 "P2P: GO move - schedule re-consideration"); 9224 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9225 wpas_p2p_reconsider_moving_go, 9226 wpa_s, NULL); 9227 continue; 9228 } 9229 9230 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9231 } 9232 } 9233 9234 9235 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9236 { 9237 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9238 return; 9239 9240 wpas_p2p_update_channel_list(wpa_s, 9241 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9242 } 9243 9244 9245 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9246 { 9247 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9248 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9249 "the management interface is being removed"); 9250 wpas_p2p_deinit_global(wpa_s->global); 9251 } 9252 } 9253 9254 9255 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9256 { 9257 if (wpa_s->ap_iface->bss) 9258 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9259 wpas_p2p_group_deinit(wpa_s); 9260 } 9261 9262 9263 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq, 9264 unsigned int period, unsigned int interval, 9265 unsigned int count) 9266 { 9267 struct p2p_data *p2p = wpa_s->global->p2p; 9268 u8 *device_types; 9269 size_t dev_types_len; 9270 struct wpabuf *buf; 9271 int ret; 9272 9273 if (wpa_s->p2p_lo_started) { 9274 wpa_dbg(wpa_s, MSG_DEBUG, 9275 "P2P Listen offload is already started"); 9276 return 0; 9277 } 9278 9279 if (wpa_s->global->p2p == NULL || 9280 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) { 9281 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported"); 9282 return -1; 9283 } 9284 9285 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 9286 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u", 9287 freq); 9288 return -1; 9289 } 9290 9291 /* Get device type */ 9292 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) * 9293 WPS_DEV_TYPE_LEN; 9294 device_types = os_malloc(dev_types_len); 9295 if (!device_types) 9296 return -1; 9297 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN); 9298 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type, 9299 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN); 9300 9301 /* Get Probe Response IE(s) */ 9302 buf = p2p_build_probe_resp_template(p2p, freq); 9303 if (!buf) { 9304 os_free(device_types); 9305 return -1; 9306 } 9307 9308 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count, 9309 device_types, dev_types_len, 9310 wpabuf_mhead_u8(buf), wpabuf_len(buf)); 9311 if (ret < 0) 9312 wpa_dbg(wpa_s, MSG_DEBUG, 9313 "P2P: Failed to start P2P listen offload"); 9314 9315 os_free(device_types); 9316 wpabuf_free(buf); 9317 9318 if (ret == 0) { 9319 wpa_s->p2p_lo_started = 1; 9320 9321 /* Stop current P2P listen if any */ 9322 wpas_stop_listen(wpa_s); 9323 } 9324 9325 return ret; 9326 } 9327 9328 9329 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s) 9330 { 9331 int ret; 9332 9333 if (!wpa_s->p2p_lo_started) 9334 return 0; 9335 9336 ret = wpa_drv_p2p_lo_stop(wpa_s); 9337 if (ret < 0) 9338 wpa_dbg(wpa_s, MSG_DEBUG, 9339 "P2P: Failed to stop P2P listen offload"); 9340 9341 wpa_s->p2p_lo_started = 0; 9342 return ret; 9343 } 9344