1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j@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51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 #ifndef P2P_MAX_CLIENT_IDLE 57 /* 58 * How many seconds to try to reconnect to the GO when connection in P2P client 59 * role has been lost. 60 */ 61 #define P2P_MAX_CLIENT_IDLE 10 62 #endif /* P2P_MAX_CLIENT_IDLE */ 63 64 #ifndef P2P_MAX_INITIAL_CONN_WAIT 65 /* 66 * How many seconds to wait for initial 4-way handshake to get completed after 67 * WPS provisioning step or after the re-invocation of a persistent group on a 68 * P2P Client. 69 */ 70 #define P2P_MAX_INITIAL_CONN_WAIT 10 71 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 72 73 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 74 /* 75 * How many seconds to wait for initial 4-way handshake to get completed after 76 * WPS provisioning step on the GO. This controls the extra time the P2P 77 * operation is considered to be in progress (e.g., to delay other scans) after 78 * WPS provisioning has been completed on the GO during group formation. 79 */ 80 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10 81 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 82 83 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 84 /* 85 * How many seconds to wait for initial 4-way handshake to get completed after 86 * re-invocation of a persistent group on the GO when the client is expected 87 * to connect automatically (no user interaction). 88 */ 89 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 90 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 91 92 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 93 94 /* 95 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 96 * was not possible. 97 */ 98 #define P2P_RECONSIDER_GO_MOVE_DELAY 30 99 100 enum p2p_group_removal_reason { 101 P2P_GROUP_REMOVAL_UNKNOWN, 102 P2P_GROUP_REMOVAL_SILENT, 103 P2P_GROUP_REMOVAL_FORMATION_FAILED, 104 P2P_GROUP_REMOVAL_REQUESTED, 105 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 106 P2P_GROUP_REMOVAL_UNAVAILABLE, 107 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 108 P2P_GROUP_REMOVAL_PSK_FAILURE, 109 P2P_GROUP_REMOVAL_FREQ_CONFLICT, 110 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL 111 }; 112 113 114 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 115 static struct wpa_supplicant * 116 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 117 int go); 118 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 119 const u8 *ssid, size_t ssid_len); 120 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 121 const u8 *ssid, size_t ssid_len); 122 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 123 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 124 const u8 *dev_addr, enum p2p_wps_method wps_method, 125 int auto_join, int freq, 126 const u8 *ssid, size_t ssid_len); 127 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 128 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 129 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 130 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 131 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 132 void *timeout_ctx); 133 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 134 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 135 int group_added); 136 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 137 static void wpas_stop_listen(void *ctx); 138 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 139 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 140 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 141 enum wpa_driver_if_type type); 142 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 143 int already_deleted); 144 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 145 struct wpa_used_freq_data *freqs, 146 unsigned int num); 147 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 148 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 149 static void 150 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 151 struct wpa_used_freq_data *freqs, unsigned int num, 152 enum wpas_p2p_channel_update_trig trig); 153 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx); 154 155 156 /* 157 * Get the number of concurrent channels that the HW can operate, but that are 158 * currently not in use by any of the wpa_supplicant interfaces. 159 */ 160 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 161 { 162 int *freqs; 163 int num, unused; 164 165 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 166 if (!freqs) 167 return -1; 168 169 num = get_shared_radio_freqs(wpa_s, freqs, 170 wpa_s->num_multichan_concurrent); 171 os_free(freqs); 172 173 unused = wpa_s->num_multichan_concurrent - num; 174 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 175 return unused; 176 } 177 178 179 /* 180 * Get the frequencies that are currently in use by one or more of the virtual 181 * interfaces, and that are also valid for P2P operation. 182 */ 183 static unsigned int 184 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 185 struct wpa_used_freq_data *p2p_freqs, 186 unsigned int len) 187 { 188 struct wpa_used_freq_data *freqs; 189 unsigned int num, i, j; 190 191 freqs = os_calloc(wpa_s->num_multichan_concurrent, 192 sizeof(struct wpa_used_freq_data)); 193 if (!freqs) 194 return 0; 195 196 num = get_shared_radio_freqs_data(wpa_s, freqs, 197 wpa_s->num_multichan_concurrent); 198 199 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len); 200 201 for (i = 0, j = 0; i < num && j < len; i++) { 202 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 203 p2p_freqs[j++] = freqs[i]; 204 } 205 206 os_free(freqs); 207 208 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j); 209 210 return j; 211 } 212 213 214 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 215 int freq) 216 { 217 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 218 return; 219 220 /* Use the wpa_s used to control the P2P Device operation */ 221 wpa_s = wpa_s->global->p2p_init_wpa_s; 222 223 if (wpa_s->conf->p2p_ignore_shared_freq && 224 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 225 wpas_p2p_num_unused_channels(wpa_s) > 0) { 226 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 227 freq); 228 freq = 0; 229 } 230 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 231 } 232 233 234 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 235 struct wpa_scan_results *scan_res) 236 { 237 size_t i; 238 239 if (wpa_s->p2p_scan_work) { 240 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 241 wpa_s->p2p_scan_work = NULL; 242 radio_work_done(work); 243 } 244 245 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 246 return; 247 248 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 249 (int) scan_res->num); 250 251 for (i = 0; i < scan_res->num; i++) { 252 struct wpa_scan_res *bss = scan_res->res[i]; 253 struct os_reltime time_tmp_age, entry_ts; 254 const u8 *ies; 255 size_t ies_len; 256 257 time_tmp_age.sec = bss->age / 1000; 258 time_tmp_age.usec = (bss->age % 1000) * 1000; 259 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 260 261 ies = (const u8 *) (bss + 1); 262 ies_len = bss->ie_len; 263 if (bss->beacon_ie_len > 0 && 264 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 265 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 266 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 267 MACSTR, MAC2STR(bss->bssid)); 268 ies = ies + ies_len; 269 ies_len = bss->beacon_ie_len; 270 } 271 272 273 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 274 bss->freq, &entry_ts, bss->level, 275 ies, ies_len) > 0) 276 break; 277 } 278 279 p2p_scan_res_handled(wpa_s->global->p2p); 280 } 281 282 283 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 284 { 285 struct wpa_supplicant *wpa_s = work->wpa_s; 286 struct wpa_driver_scan_params *params = work->ctx; 287 int ret; 288 289 if (deinit) { 290 if (!work->started) { 291 wpa_scan_free_params(params); 292 return; 293 } 294 295 wpa_s->p2p_scan_work = NULL; 296 return; 297 } 298 299 ret = wpa_drv_scan(wpa_s, params); 300 wpa_scan_free_params(params); 301 work->ctx = NULL; 302 if (ret) { 303 radio_work_done(work); 304 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 305 return; 306 } 307 308 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 309 os_get_reltime(&wpa_s->scan_trigger_time); 310 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 311 wpa_s->own_scan_requested = 1; 312 wpa_s->p2p_scan_work = work; 313 } 314 315 316 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s, 317 int freq) 318 { 319 if (wpa_s->global->p2p_24ghz_social_channels && 320 (freq == 2412 || freq == 2437 || freq == 2462)) { 321 /* 322 * Search all social channels regardless of whether these have 323 * been disabled for P2P operating channel use to avoid missing 324 * peers. 325 */ 326 return 1; 327 } 328 return p2p_supported_freq(wpa_s->global->p2p, freq); 329 } 330 331 332 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 333 unsigned int num_req_dev_types, 334 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 335 { 336 struct wpa_supplicant *wpa_s = ctx; 337 struct wpa_driver_scan_params *params = NULL; 338 struct wpabuf *wps_ie, *ies; 339 unsigned int num_channels = 0; 340 int social_channels_freq[] = { 2412, 2437, 2462, 60480 }; 341 size_t ielen; 342 u8 *n, i; 343 344 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 345 return -1; 346 347 if (wpa_s->p2p_scan_work) { 348 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 349 return -1; 350 } 351 352 params = os_zalloc(sizeof(*params)); 353 if (params == NULL) 354 return -1; 355 356 /* P2P Wildcard SSID */ 357 params->num_ssids = 1; 358 n = os_malloc(P2P_WILDCARD_SSID_LEN); 359 if (n == NULL) 360 goto fail; 361 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 362 params->ssids[0].ssid = n; 363 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 364 365 wpa_s->wps->dev.p2p = 1; 366 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 367 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 368 num_req_dev_types, req_dev_types); 369 if (wps_ie == NULL) 370 goto fail; 371 372 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 373 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 374 if (ies == NULL) { 375 wpabuf_free(wps_ie); 376 goto fail; 377 } 378 wpabuf_put_buf(ies, wps_ie); 379 wpabuf_free(wps_ie); 380 381 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 382 383 params->p2p_probe = 1; 384 n = os_malloc(wpabuf_len(ies)); 385 if (n == NULL) { 386 wpabuf_free(ies); 387 goto fail; 388 } 389 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 390 params->extra_ies = n; 391 params->extra_ies_len = wpabuf_len(ies); 392 wpabuf_free(ies); 393 394 switch (type) { 395 case P2P_SCAN_SOCIAL: 396 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1, 397 sizeof(int)); 398 if (params->freqs == NULL) 399 goto fail; 400 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 401 if (wpas_p2p_search_social_channel( 402 wpa_s, social_channels_freq[i])) 403 params->freqs[num_channels++] = 404 social_channels_freq[i]; 405 } 406 params->freqs[num_channels++] = 0; 407 break; 408 case P2P_SCAN_FULL: 409 break; 410 case P2P_SCAN_SPECIFIC: 411 params->freqs = os_calloc(2, sizeof(int)); 412 if (params->freqs == NULL) 413 goto fail; 414 params->freqs[0] = freq; 415 params->freqs[1] = 0; 416 break; 417 case P2P_SCAN_SOCIAL_PLUS_ONE: 418 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2, 419 sizeof(int)); 420 if (params->freqs == NULL) 421 goto fail; 422 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 423 if (wpas_p2p_search_social_channel( 424 wpa_s, social_channels_freq[i])) 425 params->freqs[num_channels++] = 426 social_channels_freq[i]; 427 } 428 if (p2p_supported_freq(wpa_s->global->p2p, freq)) 429 params->freqs[num_channels++] = freq; 430 params->freqs[num_channels++] = 0; 431 break; 432 } 433 434 radio_remove_works(wpa_s, "p2p-scan", 0); 435 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 436 params) < 0) 437 goto fail; 438 return 0; 439 440 fail: 441 wpa_scan_free_params(params); 442 return -1; 443 } 444 445 446 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 447 { 448 switch (p2p_group_interface) { 449 case P2P_GROUP_INTERFACE_PENDING: 450 return WPA_IF_P2P_GROUP; 451 case P2P_GROUP_INTERFACE_GO: 452 return WPA_IF_P2P_GO; 453 case P2P_GROUP_INTERFACE_CLIENT: 454 return WPA_IF_P2P_CLIENT; 455 } 456 457 return WPA_IF_P2P_GROUP; 458 } 459 460 461 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 462 const u8 *ssid, 463 size_t ssid_len, int *go) 464 { 465 struct wpa_ssid *s; 466 467 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 468 for (s = wpa_s->conf->ssid; s; s = s->next) { 469 if (s->disabled != 0 || !s->p2p_group || 470 s->ssid_len != ssid_len || 471 os_memcmp(ssid, s->ssid, ssid_len) != 0) 472 continue; 473 if (s->mode == WPAS_MODE_P2P_GO && 474 s != wpa_s->current_ssid) 475 continue; 476 if (go) 477 *go = s->mode == WPAS_MODE_P2P_GO; 478 return wpa_s; 479 } 480 } 481 482 return NULL; 483 } 484 485 486 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx) 487 { 488 struct wpa_supplicant *wpa_s = eloop_ctx; 489 wpa_printf(MSG_DEBUG, 490 "P2P: Complete previously requested removal of %s", 491 wpa_s->ifname); 492 wpas_p2p_disconnect(wpa_s); 493 } 494 495 496 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s, 497 struct wpa_supplicant *calling_wpa_s) 498 { 499 if (calling_wpa_s == wpa_s && wpa_s && 500 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 501 /* 502 * The calling wpa_s instance is going to be removed. Do that 503 * from an eloop callback to keep the instance available until 504 * the caller has returned. This my be needed, e.g., to provide 505 * control interface responses on the per-interface socket. 506 */ 507 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect, 508 wpa_s, NULL) < 0) 509 return -1; 510 return 0; 511 } 512 513 return wpas_p2p_disconnect(wpa_s); 514 } 515 516 517 /* Determine total number of clients in active groups where we are the GO */ 518 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s) 519 { 520 unsigned int count = 0; 521 struct wpa_ssid *s; 522 523 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 524 for (s = wpa_s->conf->ssid; s; s = s->next) { 525 wpa_printf(MSG_DEBUG, 526 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 527 wpa_s, s, s->disabled, s->p2p_group, 528 s->mode); 529 if (!s->disabled && s->p2p_group && 530 s->mode == WPAS_MODE_P2P_GO) { 531 count += p2p_get_group_num_members( 532 wpa_s->p2p_group); 533 } 534 } 535 } 536 537 return count; 538 } 539 540 541 /* Find an interface for a P2P group where we are the GO */ 542 static struct wpa_supplicant * 543 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s) 544 { 545 struct wpa_supplicant *save = NULL; 546 struct wpa_ssid *s; 547 548 if (!wpa_s) 549 return NULL; 550 551 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 552 for (s = wpa_s->conf->ssid; s; s = s->next) { 553 if (s->disabled || !s->p2p_group || 554 s->mode != WPAS_MODE_P2P_GO) 555 continue; 556 557 /* Prefer a group with connected clients */ 558 if (p2p_get_group_num_members(wpa_s->p2p_group)) 559 return wpa_s; 560 save = wpa_s; 561 } 562 } 563 564 /* No group with connected clients, so pick the one without (if any) */ 565 return save; 566 } 567 568 569 /* Find an active P2P group where we are the GO */ 570 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s, 571 u8 *bssid) 572 { 573 struct wpa_ssid *s, *empty = NULL; 574 575 if (!wpa_s) 576 return 0; 577 578 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 579 for (s = wpa_s->conf->ssid; s; s = s->next) { 580 if (s->disabled || !s->p2p_group || 581 s->mode != WPAS_MODE_P2P_GO) 582 continue; 583 584 os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN); 585 if (p2p_get_group_num_members(wpa_s->p2p_group)) 586 return s; 587 empty = s; 588 } 589 } 590 591 return empty; 592 } 593 594 595 /* Find a persistent group where we are the GO */ 596 static struct wpa_ssid * 597 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s) 598 { 599 struct wpa_ssid *s; 600 601 for (s = wpa_s->conf->ssid; s; s = s->next) { 602 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO) 603 return s; 604 } 605 606 return NULL; 607 } 608 609 610 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role) 611 { 612 struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s; 613 struct wpa_ssid *s; 614 u8 conncap = P2PS_SETUP_NONE; 615 unsigned int owned_members = 0; 616 unsigned int owner = 0; 617 unsigned int client = 0; 618 struct wpa_supplicant *go_wpa_s; 619 struct wpa_ssid *persistent_go; 620 int p2p_no_group_iface; 621 622 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role); 623 624 /* 625 * For non-concurrent capable devices: 626 * If persistent_go, then no new. 627 * If GO, then no client. 628 * If client, then no GO. 629 */ 630 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 631 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 632 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s); 633 634 wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p", 635 go_wpa_s, persistent_go); 636 637 for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s; 638 tmp_wpa_s = tmp_wpa_s->next) { 639 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) { 640 wpa_printf(MSG_DEBUG, 641 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 642 tmp_wpa_s, s, s->disabled, 643 s->p2p_group, s->mode); 644 if (!s->disabled && s->p2p_group) { 645 if (s->mode == WPAS_MODE_P2P_GO) { 646 owned_members += 647 p2p_get_group_num_members( 648 tmp_wpa_s->p2p_group); 649 owner++; 650 } else 651 client++; 652 } 653 } 654 } 655 656 /* If not concurrent, restrict our choices */ 657 if (p2p_no_group_iface) { 658 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface"); 659 660 if (client) 661 return P2PS_SETUP_NONE; 662 663 if (go_wpa_s) { 664 if (role == P2PS_SETUP_CLIENT || 665 incoming == P2PS_SETUP_GROUP_OWNER || 666 p2p_client_limit_reached(go_wpa_s->p2p_group)) 667 return P2PS_SETUP_NONE; 668 669 return P2PS_SETUP_GROUP_OWNER; 670 } 671 672 if (persistent_go) { 673 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) { 674 if (!incoming) 675 return P2PS_SETUP_GROUP_OWNER | 676 P2PS_SETUP_CLIENT; 677 if (incoming == P2PS_SETUP_NEW) { 678 u8 r; 679 680 if (os_get_random(&r, sizeof(r)) < 0 || 681 (r & 1)) 682 return P2PS_SETUP_CLIENT; 683 return P2PS_SETUP_GROUP_OWNER; 684 } 685 } 686 } 687 } 688 689 /* If a required role has been specified, handle it here */ 690 if (role && role != P2PS_SETUP_NEW) { 691 switch (incoming) { 692 case P2PS_SETUP_NONE: 693 case P2PS_SETUP_NEW: 694 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 695 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 696 conncap = role; 697 goto grp_owner; 698 699 case P2PS_SETUP_GROUP_OWNER: 700 /* 701 * Must be a complimentary role - cannot be a client to 702 * more than one peer. 703 */ 704 if (incoming == role || client) 705 return P2PS_SETUP_NONE; 706 707 return P2PS_SETUP_CLIENT; 708 709 case P2PS_SETUP_CLIENT: 710 /* Must be a complimentary role */ 711 if (incoming != role) { 712 conncap = P2PS_SETUP_GROUP_OWNER; 713 goto grp_owner; 714 } 715 716 default: 717 return P2PS_SETUP_NONE; 718 } 719 } 720 721 /* 722 * For now, we only will support ownership of one group, and being a 723 * client of one group. Therefore, if we have either an existing GO 724 * group, or an existing client group, we will not do a new GO 725 * negotiation, but rather try to re-use the existing groups. 726 */ 727 switch (incoming) { 728 case P2PS_SETUP_NONE: 729 case P2PS_SETUP_NEW: 730 if (client) 731 conncap = P2PS_SETUP_GROUP_OWNER; 732 else if (!owned_members) 733 conncap = P2PS_SETUP_NEW; 734 else if (incoming == P2PS_SETUP_NONE) 735 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT; 736 else 737 conncap = P2PS_SETUP_CLIENT; 738 break; 739 740 case P2PS_SETUP_CLIENT: 741 conncap = P2PS_SETUP_GROUP_OWNER; 742 break; 743 744 case P2PS_SETUP_GROUP_OWNER: 745 if (!client) 746 conncap = P2PS_SETUP_CLIENT; 747 break; 748 749 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 750 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 751 if (client) 752 conncap = P2PS_SETUP_GROUP_OWNER; 753 else { 754 u8 r; 755 756 if (os_get_random(&r, sizeof(r)) < 0 || 757 (r & 1)) 758 conncap = P2PS_SETUP_CLIENT; 759 else 760 conncap = P2PS_SETUP_GROUP_OWNER; 761 } 762 break; 763 764 default: 765 return P2PS_SETUP_NONE; 766 } 767 768 grp_owner: 769 if ((conncap & P2PS_SETUP_GROUP_OWNER) || 770 (!incoming && (conncap & P2PS_SETUP_NEW))) { 771 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group)) 772 conncap &= ~P2PS_SETUP_GROUP_OWNER; 773 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d", 774 owner, owned_members, conncap); 775 776 s = wpas_p2p_get_persistent_go(wpa_s); 777 778 if (!s && !owner && p2p_no_group_iface) { 779 p2p_set_intended_addr(wpa_s->global->p2p, 780 wpa_s->own_addr); 781 } else if (!s && !owner) { 782 if (wpas_p2p_add_group_interface(wpa_s, 783 WPA_IF_P2P_GO) < 0) { 784 wpa_printf(MSG_ERROR, 785 "P2P: Failed to allocate a new interface for the group"); 786 return P2PS_SETUP_NONE; 787 } 788 wpa_s->global->pending_group_iface_for_p2ps = 1; 789 p2p_set_intended_addr(wpa_s->global->p2p, 790 wpa_s->pending_interface_addr); 791 } 792 } 793 794 return conncap; 795 } 796 797 798 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 799 enum p2p_group_removal_reason removal_reason) 800 { 801 struct wpa_ssid *ssid; 802 char *gtype; 803 const char *reason; 804 805 ssid = wpa_s->current_ssid; 806 if (ssid == NULL) { 807 /* 808 * The current SSID was not known, but there may still be a 809 * pending P2P group interface waiting for provisioning or a 810 * P2P group that is trying to reconnect. 811 */ 812 ssid = wpa_s->conf->ssid; 813 while (ssid) { 814 if (ssid->p2p_group && ssid->disabled != 2) 815 break; 816 ssid = ssid->next; 817 } 818 if (ssid == NULL && 819 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 820 { 821 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 822 "not found"); 823 return -1; 824 } 825 } 826 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 827 gtype = "GO"; 828 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 829 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 830 wpa_s->reassociate = 0; 831 wpa_s->disconnected = 1; 832 gtype = "client"; 833 } else 834 gtype = "GO"; 835 836 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 837 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 838 839 if (os_strcmp(gtype, "client") == 0) { 840 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 841 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal, 842 wpa_s, NULL)) { 843 wpa_printf(MSG_DEBUG, 844 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal"); 845 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE; 846 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, 847 wpa_s, NULL); 848 } 849 } 850 851 if (wpa_s->cross_connect_in_use) { 852 wpa_s->cross_connect_in_use = 0; 853 wpa_msg_global(wpa_s->parent, MSG_INFO, 854 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 855 wpa_s->ifname, wpa_s->cross_connect_uplink); 856 } 857 switch (removal_reason) { 858 case P2P_GROUP_REMOVAL_REQUESTED: 859 reason = " reason=REQUESTED"; 860 break; 861 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 862 reason = " reason=FORMATION_FAILED"; 863 break; 864 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 865 reason = " reason=IDLE"; 866 break; 867 case P2P_GROUP_REMOVAL_UNAVAILABLE: 868 reason = " reason=UNAVAILABLE"; 869 break; 870 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 871 reason = " reason=GO_ENDING_SESSION"; 872 break; 873 case P2P_GROUP_REMOVAL_PSK_FAILURE: 874 reason = " reason=PSK_FAILURE"; 875 break; 876 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 877 reason = " reason=FREQ_CONFLICT"; 878 break; 879 default: 880 reason = ""; 881 break; 882 } 883 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 884 wpa_msg_global(wpa_s->parent, MSG_INFO, 885 P2P_EVENT_GROUP_REMOVED "%s %s%s", 886 wpa_s->ifname, gtype, reason); 887 } 888 889 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 890 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 891 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 892 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 893 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 894 wpa_s->parent, NULL) > 0) { 895 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 896 "timeout"); 897 wpa_s->p2p_in_provisioning = 0; 898 wpas_p2p_group_formation_failed(wpa_s, 1); 899 } 900 901 wpa_s->p2p_in_invitation = 0; 902 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 903 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL); 904 905 /* 906 * Make sure wait for the first client does not remain active after the 907 * group has been removed. 908 */ 909 wpa_s->global->p2p_go_wait_client.sec = 0; 910 911 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 912 struct wpa_global *global; 913 char *ifname; 914 enum wpa_driver_if_type type; 915 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 916 wpa_s->ifname); 917 global = wpa_s->global; 918 ifname = os_strdup(wpa_s->ifname); 919 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 920 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL); 921 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 922 wpa_s = global->ifaces; 923 if (wpa_s && ifname) 924 wpa_drv_if_remove(wpa_s, type, ifname); 925 os_free(ifname); 926 return 1; 927 } 928 929 if (!wpa_s->p2p_go_group_formation_completed) { 930 wpa_s->global->p2p_group_formation = NULL; 931 wpa_s->p2p_in_provisioning = 0; 932 } 933 934 wpa_s->show_group_started = 0; 935 os_free(wpa_s->go_params); 936 wpa_s->go_params = NULL; 937 938 os_free(wpa_s->p2p_group_common_freqs); 939 wpa_s->p2p_group_common_freqs = NULL; 940 wpa_s->p2p_group_common_freqs_num = 0; 941 942 wpa_s->waiting_presence_resp = 0; 943 944 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 945 if (ssid && (ssid->p2p_group || 946 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 947 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 948 int id = ssid->id; 949 if (ssid == wpa_s->current_ssid) { 950 wpa_sm_set_config(wpa_s->wpa, NULL); 951 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 952 wpa_s->current_ssid = NULL; 953 } 954 /* 955 * Networks objects created during any P2P activities are not 956 * exposed out as they might/will confuse certain non-P2P aware 957 * applications since these network objects won't behave like 958 * regular ones. 959 * 960 * Likewise, we don't send out network removed signals for such 961 * network objects. 962 */ 963 wpa_config_remove_network(wpa_s->conf, id); 964 wpa_supplicant_clear_status(wpa_s); 965 wpa_supplicant_cancel_sched_scan(wpa_s); 966 } else { 967 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 968 "found"); 969 } 970 if (wpa_s->ap_iface) 971 wpa_supplicant_ap_deinit(wpa_s); 972 else 973 wpa_drv_deinit_p2p_cli(wpa_s); 974 975 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 976 977 return 0; 978 } 979 980 981 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 982 u8 *go_dev_addr, 983 const u8 *ssid, size_t ssid_len) 984 { 985 struct wpa_bss *bss; 986 const u8 *bssid; 987 struct wpabuf *p2p; 988 u8 group_capab; 989 const u8 *addr; 990 991 if (wpa_s->go_params) 992 bssid = wpa_s->go_params->peer_interface_addr; 993 else 994 bssid = wpa_s->bssid; 995 996 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 997 if (bss == NULL && wpa_s->go_params && 998 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 999 bss = wpa_bss_get_p2p_dev_addr( 1000 wpa_s, wpa_s->go_params->peer_device_addr); 1001 if (bss == NULL) { 1002 u8 iface_addr[ETH_ALEN]; 1003 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 1004 iface_addr) == 0) 1005 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 1006 } 1007 if (bss == NULL) { 1008 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1009 "group is persistent - BSS " MACSTR " not found", 1010 MAC2STR(bssid)); 1011 return 0; 1012 } 1013 1014 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1015 if (p2p == NULL) 1016 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 1017 P2P_IE_VENDOR_TYPE); 1018 if (p2p == NULL) { 1019 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1020 "group is persistent - BSS " MACSTR 1021 " did not include P2P IE", MAC2STR(bssid)); 1022 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 1023 (u8 *) (bss + 1), bss->ie_len); 1024 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 1025 ((u8 *) bss + 1) + bss->ie_len, 1026 bss->beacon_ie_len); 1027 return 0; 1028 } 1029 1030 group_capab = p2p_get_group_capab(p2p); 1031 addr = p2p_get_go_dev_addr(p2p); 1032 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 1033 "group_capab=0x%x", group_capab); 1034 if (addr) { 1035 os_memcpy(go_dev_addr, addr, ETH_ALEN); 1036 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 1037 MAC2STR(addr)); 1038 } else 1039 os_memset(go_dev_addr, 0, ETH_ALEN); 1040 wpabuf_free(p2p); 1041 1042 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 1043 "go_dev_addr=" MACSTR, 1044 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 1045 1046 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1047 } 1048 1049 1050 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 1051 struct wpa_ssid *ssid, 1052 const u8 *go_dev_addr) 1053 { 1054 struct wpa_ssid *s; 1055 int changed = 0; 1056 1057 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 1058 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 1059 for (s = wpa_s->conf->ssid; s; s = s->next) { 1060 if (s->disabled == 2 && 1061 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 1062 s->ssid_len == ssid->ssid_len && 1063 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 1064 break; 1065 } 1066 1067 if (s) { 1068 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 1069 "entry"); 1070 if (ssid->passphrase && !s->passphrase) 1071 changed = 1; 1072 else if (ssid->passphrase && s->passphrase && 1073 os_strcmp(ssid->passphrase, s->passphrase) != 0) 1074 changed = 1; 1075 } else { 1076 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 1077 "entry"); 1078 changed = 1; 1079 s = wpa_config_add_network(wpa_s->conf); 1080 if (s == NULL) 1081 return -1; 1082 1083 /* 1084 * Instead of network_added we emit persistent_group_added 1085 * notification. Also to keep the defense checks in 1086 * persistent_group obj registration method, we set the 1087 * relevant flags in s to designate it as a persistent group. 1088 */ 1089 s->p2p_group = 1; 1090 s->p2p_persistent_group = 1; 1091 wpas_notify_persistent_group_added(wpa_s, s); 1092 wpa_config_set_network_defaults(s); 1093 } 1094 1095 s->p2p_group = 1; 1096 s->p2p_persistent_group = 1; 1097 s->disabled = 2; 1098 s->bssid_set = 1; 1099 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 1100 s->mode = ssid->mode; 1101 s->auth_alg = WPA_AUTH_ALG_OPEN; 1102 s->key_mgmt = WPA_KEY_MGMT_PSK; 1103 s->proto = WPA_PROTO_RSN; 1104 s->pairwise_cipher = WPA_CIPHER_CCMP; 1105 s->export_keys = 1; 1106 if (ssid->passphrase) { 1107 os_free(s->passphrase); 1108 s->passphrase = os_strdup(ssid->passphrase); 1109 } 1110 if (ssid->psk_set) { 1111 s->psk_set = 1; 1112 os_memcpy(s->psk, ssid->psk, 32); 1113 } 1114 if (s->passphrase && !s->psk_set) 1115 wpa_config_update_psk(s); 1116 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 1117 os_free(s->ssid); 1118 s->ssid = os_malloc(ssid->ssid_len); 1119 } 1120 if (s->ssid) { 1121 s->ssid_len = ssid->ssid_len; 1122 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 1123 } 1124 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 1125 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 1126 wpa_s->global->add_psk = NULL; 1127 changed = 1; 1128 } 1129 1130 if (changed && wpa_s->conf->update_config && 1131 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 1132 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1133 } 1134 1135 return s->id; 1136 } 1137 1138 1139 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 1140 const u8 *addr) 1141 { 1142 struct wpa_ssid *ssid, *s; 1143 u8 *n; 1144 size_t i; 1145 int found = 0; 1146 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 1147 1148 ssid = wpa_s->current_ssid; 1149 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 1150 !ssid->p2p_persistent_group) 1151 return; 1152 1153 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 1154 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 1155 continue; 1156 1157 if (s->ssid_len == ssid->ssid_len && 1158 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 1159 break; 1160 } 1161 1162 if (s == NULL) 1163 return; 1164 1165 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 1166 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr, 1167 ETH_ALEN) != 0) 1168 continue; 1169 1170 if (i == s->num_p2p_clients - 1) 1171 return; /* already the most recent entry */ 1172 1173 /* move the entry to mark it most recent */ 1174 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 1175 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 1176 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 1177 os_memcpy(s->p2p_client_list + 1178 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr, 1179 ETH_ALEN); 1180 os_memset(s->p2p_client_list + 1181 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1182 0xff, ETH_ALEN); 1183 found = 1; 1184 break; 1185 } 1186 1187 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 1188 n = os_realloc_array(s->p2p_client_list, 1189 s->num_p2p_clients + 1, 2 * ETH_ALEN); 1190 if (n == NULL) 1191 return; 1192 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr, 1193 ETH_ALEN); 1194 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN, 1195 0xff, ETH_ALEN); 1196 s->p2p_client_list = n; 1197 s->num_p2p_clients++; 1198 } else if (!found && s->p2p_client_list) { 1199 /* Not enough room for an additional entry - drop the oldest 1200 * entry */ 1201 os_memmove(s->p2p_client_list, 1202 s->p2p_client_list + 2 * ETH_ALEN, 1203 (s->num_p2p_clients - 1) * 2 * ETH_ALEN); 1204 os_memcpy(s->p2p_client_list + 1205 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, 1206 addr, ETH_ALEN); 1207 os_memset(s->p2p_client_list + 1208 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1209 0xff, ETH_ALEN); 1210 } 1211 1212 if (p2p_wpa_s->conf->update_config && 1213 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 1214 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1215 } 1216 1217 1218 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s, 1219 int go, struct wpa_ssid *ssid, int freq, 1220 const u8 *psk, const char *passphrase, 1221 const u8 *go_dev_addr, int persistent, 1222 const char *extra) 1223 { 1224 const char *ssid_txt; 1225 char psk_txt[65]; 1226 1227 if (psk) 1228 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32); 1229 else 1230 psk_txt[0] = '\0'; 1231 1232 if (ssid) 1233 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 1234 else 1235 ssid_txt = ""; 1236 1237 if (passphrase && passphrase[0] == '\0') 1238 passphrase = NULL; 1239 1240 /* 1241 * Include PSK/passphrase only in the control interface message and 1242 * leave it out from the debug log entry. 1243 */ 1244 wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO, 1245 P2P_EVENT_GROUP_STARTED 1246 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr=" 1247 MACSTR "%s%s", 1248 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1249 psk ? " psk=" : "", psk_txt, 1250 passphrase ? " passphrase=\"" : "", 1251 passphrase ? passphrase : "", 1252 passphrase ? "\"" : "", 1253 MAC2STR(go_dev_addr), 1254 persistent ? " [PERSISTENT]" : "", extra); 1255 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED 1256 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s", 1257 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1258 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "", 1259 extra); 1260 } 1261 1262 1263 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 1264 int success, int already_deleted) 1265 { 1266 struct wpa_ssid *ssid; 1267 int client; 1268 int persistent; 1269 u8 go_dev_addr[ETH_ALEN]; 1270 int network_id = -1; 1271 1272 /* 1273 * This callback is likely called for the main interface. Update wpa_s 1274 * to use the group interface if a new interface was created for the 1275 * group. 1276 */ 1277 if (wpa_s->global->p2p_group_formation) 1278 wpa_s = wpa_s->global->p2p_group_formation; 1279 if (wpa_s->p2p_go_group_formation_completed) { 1280 wpa_s->global->p2p_group_formation = NULL; 1281 wpa_s->p2p_in_provisioning = 0; 1282 } 1283 wpa_s->p2p_in_invitation = 0; 1284 wpa_s->group_formation_reported = 1; 1285 1286 if (!success) { 1287 wpa_msg_global(wpa_s->parent, MSG_INFO, 1288 P2P_EVENT_GROUP_FORMATION_FAILURE); 1289 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1290 if (already_deleted) 1291 return; 1292 wpas_p2p_group_delete(wpa_s, 1293 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1294 return; 1295 } 1296 1297 wpa_msg_global(wpa_s->parent, MSG_INFO, 1298 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1299 1300 ssid = wpa_s->current_ssid; 1301 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1302 ssid->mode = WPAS_MODE_P2P_GO; 1303 p2p_group_notif_formation_done(wpa_s->p2p_group); 1304 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1305 } 1306 1307 persistent = 0; 1308 if (ssid) { 1309 client = ssid->mode == WPAS_MODE_INFRA; 1310 if (ssid->mode == WPAS_MODE_P2P_GO) { 1311 persistent = ssid->p2p_persistent_group; 1312 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1313 ETH_ALEN); 1314 } else 1315 persistent = wpas_p2p_persistent_group(wpa_s, 1316 go_dev_addr, 1317 ssid->ssid, 1318 ssid->ssid_len); 1319 } else { 1320 client = wpa_s->p2p_group_interface == 1321 P2P_GROUP_INTERFACE_CLIENT; 1322 os_memset(go_dev_addr, 0, ETH_ALEN); 1323 } 1324 1325 wpa_s->show_group_started = 0; 1326 if (client) { 1327 /* 1328 * Indicate event only after successfully completed 4-way 1329 * handshake, i.e., when the interface is ready for data 1330 * packets. 1331 */ 1332 wpa_s->show_group_started = 1; 1333 } else { 1334 wpas_p2p_group_started(wpa_s, 1, ssid, 1335 ssid ? ssid->frequency : 0, 1336 ssid && ssid->passphrase == NULL && 1337 ssid->psk_set ? ssid->psk : NULL, 1338 ssid ? ssid->passphrase : NULL, 1339 go_dev_addr, persistent, ""); 1340 wpas_p2p_cross_connect_setup(wpa_s); 1341 wpas_p2p_set_group_idle_timeout(wpa_s); 1342 } 1343 1344 if (persistent) 1345 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 1346 ssid, go_dev_addr); 1347 else { 1348 os_free(wpa_s->global->add_psk); 1349 wpa_s->global->add_psk = NULL; 1350 } 1351 if (network_id < 0 && ssid) 1352 network_id = ssid->id; 1353 if (!client) { 1354 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1355 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1356 } 1357 } 1358 1359 1360 struct send_action_work { 1361 unsigned int freq; 1362 u8 dst[ETH_ALEN]; 1363 u8 src[ETH_ALEN]; 1364 u8 bssid[ETH_ALEN]; 1365 size_t len; 1366 unsigned int wait_time; 1367 u8 buf[0]; 1368 }; 1369 1370 1371 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1372 void *timeout_ctx) 1373 { 1374 struct wpa_supplicant *wpa_s = eloop_ctx; 1375 1376 if (!wpa_s->p2p_send_action_work) 1377 return; 1378 1379 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1380 os_free(wpa_s->p2p_send_action_work->ctx); 1381 radio_work_done(wpa_s->p2p_send_action_work); 1382 wpa_s->p2p_send_action_work = NULL; 1383 } 1384 1385 1386 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1387 { 1388 if (wpa_s->p2p_send_action_work) { 1389 struct send_action_work *awork; 1390 awork = wpa_s->p2p_send_action_work->ctx; 1391 if (awork->wait_time == 0) { 1392 os_free(awork); 1393 radio_work_done(wpa_s->p2p_send_action_work); 1394 wpa_s->p2p_send_action_work = NULL; 1395 } else { 1396 /* 1397 * In theory, this should not be needed, but number of 1398 * places in the P2P code is still using non-zero wait 1399 * time for the last Action frame in the sequence and 1400 * some of these do not call send_action_done(). 1401 */ 1402 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1403 wpa_s, NULL); 1404 eloop_register_timeout( 1405 0, awork->wait_time * 1000, 1406 wpas_p2p_send_action_work_timeout, 1407 wpa_s, NULL); 1408 } 1409 } 1410 } 1411 1412 1413 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1414 unsigned int freq, 1415 const u8 *dst, const u8 *src, 1416 const u8 *bssid, 1417 const u8 *data, size_t data_len, 1418 enum offchannel_send_action_result 1419 result) 1420 { 1421 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1422 1423 wpas_p2p_action_tx_clear(wpa_s); 1424 1425 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1426 return; 1427 1428 switch (result) { 1429 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1430 res = P2P_SEND_ACTION_SUCCESS; 1431 break; 1432 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1433 res = P2P_SEND_ACTION_NO_ACK; 1434 break; 1435 case OFFCHANNEL_SEND_ACTION_FAILED: 1436 res = P2P_SEND_ACTION_FAILED; 1437 break; 1438 } 1439 1440 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1441 1442 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1443 wpa_s->pending_pd_before_join && 1444 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1445 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1446 wpa_s->p2p_fallback_to_go_neg) { 1447 wpa_s->pending_pd_before_join = 0; 1448 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1449 "during p2p_connect-auto"); 1450 wpa_msg_global(wpa_s->parent, MSG_INFO, 1451 P2P_EVENT_FALLBACK_TO_GO_NEG 1452 "reason=no-ACK-to-PD-Req"); 1453 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1454 return; 1455 } 1456 } 1457 1458 1459 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1460 { 1461 struct wpa_supplicant *wpa_s = work->wpa_s; 1462 struct send_action_work *awork = work->ctx; 1463 1464 if (deinit) { 1465 if (work->started) { 1466 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1467 wpa_s, NULL); 1468 wpa_s->p2p_send_action_work = NULL; 1469 offchannel_send_action_done(wpa_s); 1470 } 1471 os_free(awork); 1472 return; 1473 } 1474 1475 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1476 awork->bssid, awork->buf, awork->len, 1477 awork->wait_time, 1478 wpas_p2p_send_action_tx_status, 1) < 0) { 1479 os_free(awork); 1480 radio_work_done(work); 1481 return; 1482 } 1483 wpa_s->p2p_send_action_work = work; 1484 } 1485 1486 1487 static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1488 unsigned int freq, const u8 *dst, 1489 const u8 *src, const u8 *bssid, const u8 *buf, 1490 size_t len, unsigned int wait_time) 1491 { 1492 struct send_action_work *awork; 1493 1494 if (wpa_s->p2p_send_action_work) { 1495 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1496 return -1; 1497 } 1498 1499 awork = os_zalloc(sizeof(*awork) + len); 1500 if (awork == NULL) 1501 return -1; 1502 1503 awork->freq = freq; 1504 os_memcpy(awork->dst, dst, ETH_ALEN); 1505 os_memcpy(awork->src, src, ETH_ALEN); 1506 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1507 awork->len = len; 1508 awork->wait_time = wait_time; 1509 os_memcpy(awork->buf, buf, len); 1510 1511 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1512 wpas_send_action_cb, awork) < 0) { 1513 os_free(awork); 1514 return -1; 1515 } 1516 1517 return 0; 1518 } 1519 1520 1521 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1522 const u8 *src, const u8 *bssid, const u8 *buf, 1523 size_t len, unsigned int wait_time) 1524 { 1525 struct wpa_supplicant *wpa_s = ctx; 1526 int listen_freq = -1, send_freq = -1; 1527 1528 if (wpa_s->p2p_listen_work) 1529 listen_freq = wpa_s->p2p_listen_work->freq; 1530 if (wpa_s->p2p_send_action_work) 1531 send_freq = wpa_s->p2p_send_action_work->freq; 1532 if (listen_freq != (int) freq && send_freq != (int) freq) { 1533 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1534 listen_freq, send_freq); 1535 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1536 len, wait_time); 1537 } 1538 1539 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1540 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1541 wait_time, 1542 wpas_p2p_send_action_tx_status, 1); 1543 } 1544 1545 1546 static void wpas_send_action_done(void *ctx) 1547 { 1548 struct wpa_supplicant *wpa_s = ctx; 1549 1550 if (wpa_s->p2p_send_action_work) { 1551 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1552 wpa_s, NULL); 1553 os_free(wpa_s->p2p_send_action_work->ctx); 1554 radio_work_done(wpa_s->p2p_send_action_work); 1555 wpa_s->p2p_send_action_work = NULL; 1556 } 1557 1558 offchannel_send_action_done(wpa_s); 1559 } 1560 1561 1562 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1563 struct p2p_go_neg_results *params) 1564 { 1565 if (wpa_s->go_params == NULL) { 1566 wpa_s->go_params = os_malloc(sizeof(*params)); 1567 if (wpa_s->go_params == NULL) 1568 return -1; 1569 } 1570 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1571 return 0; 1572 } 1573 1574 1575 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1576 struct p2p_go_neg_results *res) 1577 { 1578 wpa_s->group_formation_reported = 0; 1579 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1580 " dev_addr " MACSTR " wps_method %d", 1581 MAC2STR(res->peer_interface_addr), 1582 MAC2STR(res->peer_device_addr), res->wps_method); 1583 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1584 res->ssid, res->ssid_len); 1585 wpa_supplicant_ap_deinit(wpa_s); 1586 wpas_copy_go_neg_results(wpa_s, res); 1587 if (res->wps_method == WPS_PBC) { 1588 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1589 #ifdef CONFIG_WPS_NFC 1590 } else if (res->wps_method == WPS_NFC) { 1591 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1592 res->peer_interface_addr, 1593 wpa_s->parent->p2p_oob_dev_pw, 1594 wpa_s->parent->p2p_oob_dev_pw_id, 1, 1595 wpa_s->parent->p2p_oob_dev_pw_id == 1596 DEV_PW_NFC_CONNECTION_HANDOVER ? 1597 wpa_s->parent->p2p_peer_oob_pubkey_hash : 1598 NULL, 1599 NULL, 0, 0); 1600 #endif /* CONFIG_WPS_NFC */ 1601 } else { 1602 u16 dev_pw_id = DEV_PW_DEFAULT; 1603 if (wpa_s->p2p_wps_method == WPS_P2PS) 1604 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1605 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1606 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1607 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1608 wpa_s->p2p_pin, 1, dev_pw_id); 1609 } 1610 } 1611 1612 1613 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1614 struct wpa_ssid *ssid) 1615 { 1616 struct wpa_ssid *persistent; 1617 struct psk_list_entry *psk; 1618 struct hostapd_data *hapd; 1619 1620 if (!wpa_s->ap_iface) 1621 return; 1622 1623 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 1624 ssid->ssid_len); 1625 if (persistent == NULL) 1626 return; 1627 1628 hapd = wpa_s->ap_iface->bss[0]; 1629 1630 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1631 list) { 1632 struct hostapd_wpa_psk *hpsk; 1633 1634 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1635 MACSTR " psk=%d", 1636 MAC2STR(psk->addr), psk->p2p); 1637 hpsk = os_zalloc(sizeof(*hpsk)); 1638 if (hpsk == NULL) 1639 break; 1640 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1641 if (psk->p2p) 1642 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1643 else 1644 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1645 hpsk->next = hapd->conf->ssid.wpa_psk; 1646 hapd->conf->ssid.wpa_psk = hpsk; 1647 } 1648 } 1649 1650 1651 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1652 { 1653 unsigned int i; 1654 1655 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):", 1656 wpa_s->p2p_group_common_freqs_num); 1657 1658 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) 1659 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d", 1660 i, wpa_s->p2p_group_common_freqs[i]); 1661 } 1662 1663 1664 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1665 struct p2p_go_neg_results *params) 1666 { 1667 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1668 1669 wpa_s->p2p_group_common_freqs_num = 0; 1670 os_free(wpa_s->p2p_group_common_freqs); 1671 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1672 if (!wpa_s->p2p_group_common_freqs) 1673 return; 1674 1675 for (i = 0; i < len; i++) { 1676 if (!wpa_s->go_params->freq_list[i]) 1677 break; 1678 wpa_s->p2p_group_common_freqs[i] = 1679 wpa_s->go_params->freq_list[i]; 1680 } 1681 wpa_s->p2p_group_common_freqs_num = i; 1682 } 1683 1684 1685 static void p2p_config_write(struct wpa_supplicant *wpa_s) 1686 { 1687 #ifndef CONFIG_NO_CONFIG_WRITE 1688 if (wpa_s->parent->conf->update_config && 1689 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 1690 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1691 #endif /* CONFIG_NO_CONFIG_WRITE */ 1692 } 1693 1694 1695 static void p2p_go_configured(void *ctx, void *data) 1696 { 1697 struct wpa_supplicant *wpa_s = ctx; 1698 struct p2p_go_neg_results *params = data; 1699 struct wpa_ssid *ssid; 1700 int network_id = -1; 1701 1702 p2p_go_save_group_common_freqs(wpa_s, params); 1703 p2p_go_dump_common_freqs(wpa_s); 1704 1705 ssid = wpa_s->current_ssid; 1706 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1707 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1708 if (wpa_s->global->p2p_group_formation == wpa_s) 1709 wpa_s->global->p2p_group_formation = NULL; 1710 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1711 params->passphrase[0] == '\0' ? 1712 params->psk : NULL, 1713 params->passphrase, 1714 wpa_s->global->p2p_dev_addr, 1715 params->persistent_group, ""); 1716 wpa_s->group_formation_reported = 1; 1717 1718 if (wpa_s->parent->p2ps_method_config_any) { 1719 if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) { 1720 wpa_dbg(wpa_s, MSG_DEBUG, 1721 "P2PS: Setting default PIN for ANY"); 1722 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1723 "12345670", NULL, 0, 1724 0); 1725 } else { 1726 wpa_dbg(wpa_s, MSG_DEBUG, 1727 "P2PS: Setting default PIN for " MACSTR, 1728 MAC2STR(wpa_s->parent->p2ps_join_addr)); 1729 wpa_supplicant_ap_wps_pin( 1730 wpa_s, wpa_s->parent->p2ps_join_addr, 1731 "12345670", NULL, 0, 0); 1732 } 1733 wpa_s->parent->p2ps_method_config_any = 0; 1734 } 1735 1736 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1737 if (params->persistent_group) { 1738 network_id = wpas_p2p_store_persistent_group( 1739 wpa_s->parent, ssid, 1740 wpa_s->global->p2p_dev_addr); 1741 wpas_p2p_add_psk_list(wpa_s, ssid); 1742 } 1743 if (network_id < 0) 1744 network_id = ssid->id; 1745 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1746 wpas_p2p_cross_connect_setup(wpa_s); 1747 wpas_p2p_set_group_idle_timeout(wpa_s); 1748 1749 if (wpa_s->p2p_first_connection_timeout) { 1750 wpa_dbg(wpa_s, MSG_DEBUG, 1751 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1752 wpa_s->p2p_first_connection_timeout); 1753 wpa_s->p2p_go_group_formation_completed = 0; 1754 wpa_s->global->p2p_group_formation = wpa_s; 1755 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1756 wpa_s->parent, NULL); 1757 eloop_register_timeout( 1758 wpa_s->p2p_first_connection_timeout, 0, 1759 wpas_p2p_group_formation_timeout, 1760 wpa_s->parent, NULL); 1761 } 1762 1763 return; 1764 } 1765 1766 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1767 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1768 params->peer_interface_addr)) { 1769 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1770 "filtering"); 1771 return; 1772 } 1773 if (params->wps_method == WPS_PBC) { 1774 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1775 params->peer_device_addr); 1776 #ifdef CONFIG_WPS_NFC 1777 } else if (params->wps_method == WPS_NFC) { 1778 if (wpa_s->parent->p2p_oob_dev_pw_id != 1779 DEV_PW_NFC_CONNECTION_HANDOVER && 1780 !wpa_s->parent->p2p_oob_dev_pw) { 1781 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1782 return; 1783 } 1784 wpas_ap_wps_add_nfc_pw( 1785 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 1786 wpa_s->parent->p2p_oob_dev_pw, 1787 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 1788 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 1789 #endif /* CONFIG_WPS_NFC */ 1790 } else if (wpa_s->p2p_pin[0]) 1791 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1792 wpa_s->p2p_pin, NULL, 0, 0); 1793 os_free(wpa_s->go_params); 1794 wpa_s->go_params = NULL; 1795 } 1796 1797 1798 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1799 struct p2p_go_neg_results *params, 1800 int group_formation) 1801 { 1802 struct wpa_ssid *ssid; 1803 1804 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1805 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1806 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1807 "results"); 1808 return; 1809 } 1810 1811 ssid = wpa_config_add_network(wpa_s->conf); 1812 if (ssid == NULL) { 1813 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1814 return; 1815 } 1816 1817 wpa_s->show_group_started = 0; 1818 wpa_s->p2p_go_group_formation_completed = 0; 1819 wpa_s->group_formation_reported = 0; 1820 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1821 1822 wpa_config_set_network_defaults(ssid); 1823 ssid->temporary = 1; 1824 ssid->p2p_group = 1; 1825 ssid->p2p_persistent_group = params->persistent_group; 1826 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1827 WPAS_MODE_P2P_GO; 1828 ssid->frequency = params->freq; 1829 ssid->ht40 = params->ht40; 1830 ssid->vht = params->vht; 1831 ssid->ssid = os_zalloc(params->ssid_len + 1); 1832 if (ssid->ssid) { 1833 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1834 ssid->ssid_len = params->ssid_len; 1835 } 1836 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1837 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1838 ssid->proto = WPA_PROTO_RSN; 1839 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1840 ssid->group_cipher = WPA_CIPHER_CCMP; 1841 if (params->freq > 56160) { 1842 /* 1843 * Enable GCMP instead of CCMP as pairwise_cipher and 1844 * group_cipher in 60 GHz. 1845 */ 1846 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1847 ssid->group_cipher = WPA_CIPHER_GCMP; 1848 } 1849 if (os_strlen(params->passphrase) > 0) { 1850 ssid->passphrase = os_strdup(params->passphrase); 1851 if (ssid->passphrase == NULL) { 1852 wpa_msg_global(wpa_s, MSG_ERROR, 1853 "P2P: Failed to copy passphrase for GO"); 1854 wpa_config_remove_network(wpa_s->conf, ssid->id); 1855 return; 1856 } 1857 } else 1858 ssid->passphrase = NULL; 1859 ssid->psk_set = params->psk_set; 1860 if (ssid->psk_set) 1861 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1862 else if (ssid->passphrase) 1863 wpa_config_update_psk(ssid); 1864 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 1865 1866 wpa_s->ap_configured_cb = p2p_go_configured; 1867 wpa_s->ap_configured_cb_ctx = wpa_s; 1868 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1869 wpa_s->scan_req = NORMAL_SCAN_REQ; 1870 wpa_s->connect_without_scan = ssid; 1871 wpa_s->reassociate = 1; 1872 wpa_s->disconnected = 0; 1873 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1874 "start GO)"); 1875 wpa_supplicant_req_scan(wpa_s, 0, 0); 1876 } 1877 1878 1879 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1880 const struct wpa_supplicant *src) 1881 { 1882 struct wpa_config *d; 1883 const struct wpa_config *s; 1884 1885 d = dst->conf; 1886 s = src->conf; 1887 1888 #define C(n) if (s->n) d->n = os_strdup(s->n) 1889 C(device_name); 1890 C(manufacturer); 1891 C(model_name); 1892 C(model_number); 1893 C(serial_number); 1894 C(config_methods); 1895 #undef C 1896 1897 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1898 os_memcpy(d->sec_device_type, s->sec_device_type, 1899 sizeof(d->sec_device_type)); 1900 d->num_sec_device_types = s->num_sec_device_types; 1901 1902 d->p2p_group_idle = s->p2p_group_idle; 1903 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 1904 d->p2p_intra_bss = s->p2p_intra_bss; 1905 d->persistent_reconnect = s->persistent_reconnect; 1906 d->max_num_sta = s->max_num_sta; 1907 d->pbc_in_m1 = s->pbc_in_m1; 1908 d->ignore_old_scan_res = s->ignore_old_scan_res; 1909 d->beacon_int = s->beacon_int; 1910 d->dtim_period = s->dtim_period; 1911 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 1912 d->disassoc_low_ack = s->disassoc_low_ack; 1913 d->disable_scan_offload = s->disable_scan_offload; 1914 d->passive_scan = s->passive_scan; 1915 1916 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) { 1917 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 1918 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 1919 } 1920 d->p2p_cli_probe = s->p2p_cli_probe; 1921 } 1922 1923 1924 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 1925 char *ifname, size_t len) 1926 { 1927 char *ifname_ptr = wpa_s->ifname; 1928 1929 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 1930 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 1931 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 1932 } 1933 1934 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 1935 if (os_strlen(ifname) >= IFNAMSIZ && 1936 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 1937 int res; 1938 1939 /* Try to avoid going over the IFNAMSIZ length limit */ 1940 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 1941 if (os_snprintf_error(len, res) && len) 1942 ifname[len - 1] = '\0'; 1943 } 1944 } 1945 1946 1947 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 1948 enum wpa_driver_if_type type) 1949 { 1950 char ifname[120], force_ifname[120]; 1951 1952 if (wpa_s->pending_interface_name[0]) { 1953 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 1954 "- skip creation of a new one"); 1955 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 1956 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 1957 "unknown?! ifname='%s'", 1958 wpa_s->pending_interface_name); 1959 return -1; 1960 } 1961 return 0; 1962 } 1963 1964 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 1965 force_ifname[0] = '\0'; 1966 1967 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 1968 ifname); 1969 wpa_s->p2p_group_idx++; 1970 1971 wpa_s->pending_interface_type = type; 1972 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 1973 wpa_s->pending_interface_addr, NULL) < 0) { 1974 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 1975 "interface"); 1976 return -1; 1977 } 1978 1979 if (force_ifname[0]) { 1980 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 1981 force_ifname); 1982 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 1983 sizeof(wpa_s->pending_interface_name)); 1984 } else 1985 os_strlcpy(wpa_s->pending_interface_name, ifname, 1986 sizeof(wpa_s->pending_interface_name)); 1987 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 1988 MACSTR, wpa_s->pending_interface_name, 1989 MAC2STR(wpa_s->pending_interface_addr)); 1990 1991 return 0; 1992 } 1993 1994 1995 static void wpas_p2p_remove_pending_group_interface( 1996 struct wpa_supplicant *wpa_s) 1997 { 1998 if (!wpa_s->pending_interface_name[0] || 1999 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2000 return; /* No pending virtual interface */ 2001 2002 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2003 wpa_s->pending_interface_name); 2004 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2005 wpa_s->pending_interface_name); 2006 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2007 wpa_s->pending_interface_name[0] = '\0'; 2008 wpa_s->global->pending_group_iface_for_p2ps = 0; 2009 } 2010 2011 2012 static struct wpa_supplicant * 2013 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2014 { 2015 struct wpa_interface iface; 2016 struct wpa_supplicant *group_wpa_s; 2017 2018 if (!wpa_s->pending_interface_name[0]) { 2019 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2020 if (!wpas_p2p_create_iface(wpa_s)) 2021 return NULL; 2022 /* 2023 * Something has forced us to remove the pending interface; try 2024 * to create a new one and hope for the best that we will get 2025 * the same local address. 2026 */ 2027 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2028 WPA_IF_P2P_CLIENT) < 0) 2029 return NULL; 2030 } 2031 2032 os_memset(&iface, 0, sizeof(iface)); 2033 iface.ifname = wpa_s->pending_interface_name; 2034 iface.driver = wpa_s->driver->name; 2035 if (wpa_s->conf->ctrl_interface == NULL && 2036 wpa_s->parent != wpa_s && 2037 wpa_s->p2p_mgmt && 2038 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2039 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2040 else 2041 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2042 iface.driver_param = wpa_s->conf->driver_param; 2043 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2044 if (group_wpa_s == NULL) { 2045 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2046 "wpa_supplicant interface"); 2047 return NULL; 2048 } 2049 wpa_s->pending_interface_name[0] = '\0'; 2050 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2051 P2P_GROUP_INTERFACE_CLIENT; 2052 wpa_s->global->p2p_group_formation = group_wpa_s; 2053 wpa_s->global->pending_group_iface_for_p2ps = 0; 2054 2055 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2056 2057 return group_wpa_s; 2058 } 2059 2060 2061 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2062 void *timeout_ctx) 2063 { 2064 struct wpa_supplicant *wpa_s = eloop_ctx; 2065 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2066 wpas_p2p_group_formation_failed(wpa_s, 0); 2067 } 2068 2069 2070 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2071 int already_deleted) 2072 { 2073 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2074 wpa_s->parent, NULL); 2075 if (wpa_s->global->p2p) 2076 p2p_group_formation_failed(wpa_s->global->p2p); 2077 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2078 } 2079 2080 2081 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2082 { 2083 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2084 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2085 wpa_s->parent, NULL); 2086 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2087 wpa_s->parent, NULL); 2088 wpa_s->global->p2p_fail_on_wps_complete = 0; 2089 } 2090 2091 2092 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2093 { 2094 if (wpa_s->global->p2p_group_formation != wpa_s) 2095 return; 2096 /* Speed up group formation timeout since this cannot succeed */ 2097 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2098 wpa_s->parent, NULL); 2099 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2100 wpa_s->parent, NULL); 2101 } 2102 2103 2104 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2105 { 2106 struct wpa_supplicant *wpa_s = ctx; 2107 2108 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2109 wpa_drv_cancel_remain_on_channel(wpa_s); 2110 wpa_s->off_channel_freq = 0; 2111 wpa_s->roc_waiting_drv_freq = 0; 2112 } 2113 2114 if (res->status) { 2115 wpa_msg_global(wpa_s, MSG_INFO, 2116 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2117 res->status); 2118 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2119 wpas_p2p_remove_pending_group_interface(wpa_s); 2120 return; 2121 } 2122 2123 if (!res->role_go) { 2124 /* Inform driver of the operating channel of GO. */ 2125 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2126 } 2127 2128 if (wpa_s->p2p_go_ht40) 2129 res->ht40 = 1; 2130 if (wpa_s->p2p_go_vht) 2131 res->vht = 1; 2132 2133 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2134 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2135 " wps_method=%s", 2136 res->role_go ? "GO" : "client", res->freq, res->ht40, 2137 MAC2STR(res->peer_device_addr), 2138 MAC2STR(res->peer_interface_addr), 2139 p2p_wps_method_text(res->wps_method)); 2140 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2141 2142 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2143 struct wpa_ssid *ssid; 2144 ssid = wpa_config_get_network(wpa_s->conf, 2145 wpa_s->p2p_persistent_id); 2146 if (ssid && ssid->disabled == 2 && 2147 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2148 size_t len = os_strlen(ssid->passphrase); 2149 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2150 "on requested persistent group"); 2151 os_memcpy(res->passphrase, ssid->passphrase, len); 2152 res->passphrase[len] = '\0'; 2153 } 2154 } 2155 2156 if (wpa_s->create_p2p_iface) { 2157 struct wpa_supplicant *group_wpa_s = 2158 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2159 if (group_wpa_s == NULL) { 2160 wpas_p2p_remove_pending_group_interface(wpa_s); 2161 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2162 wpa_s, NULL); 2163 wpas_p2p_group_formation_failed(wpa_s, 1); 2164 return; 2165 } 2166 if (group_wpa_s != wpa_s) { 2167 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2168 sizeof(group_wpa_s->p2p_pin)); 2169 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2170 } 2171 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2172 wpa_s->pending_interface_name[0] = '\0'; 2173 group_wpa_s->p2p_in_provisioning = 1; 2174 2175 if (res->role_go) { 2176 wpas_start_wps_go(group_wpa_s, res, 1); 2177 } else { 2178 os_get_reltime(&group_wpa_s->scan_min_time); 2179 wpas_start_wps_enrollee(group_wpa_s, res); 2180 } 2181 } else { 2182 wpa_s->p2p_in_provisioning = 1; 2183 wpa_s->global->p2p_group_formation = wpa_s; 2184 2185 if (res->role_go) { 2186 wpas_start_wps_go(wpa_s, res, 1); 2187 } else { 2188 os_get_reltime(&wpa_s->scan_min_time); 2189 wpas_start_wps_enrollee(ctx, res); 2190 } 2191 } 2192 2193 wpa_s->p2p_long_listen = 0; 2194 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2195 2196 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2197 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2198 (res->peer_config_timeout % 100) * 10000, 2199 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2200 } 2201 2202 2203 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2204 u8 go_intent) 2205 { 2206 struct wpa_supplicant *wpa_s = ctx; 2207 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2208 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2209 dev_passwd_id, go_intent); 2210 2211 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2212 } 2213 2214 2215 static void wpas_dev_found(void *ctx, const u8 *addr, 2216 const struct p2p_peer_info *info, 2217 int new_device) 2218 { 2219 #ifndef CONFIG_NO_STDOUT_DEBUG 2220 struct wpa_supplicant *wpa_s = ctx; 2221 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2222 char *wfd_dev_info_hex = NULL; 2223 2224 #ifdef CONFIG_WIFI_DISPLAY 2225 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2226 WFD_SUBELEM_DEVICE_INFO); 2227 #endif /* CONFIG_WIFI_DISPLAY */ 2228 2229 if (info->p2ps_instance) { 2230 char str[256]; 2231 const u8 *buf = wpabuf_head(info->p2ps_instance); 2232 size_t len = wpabuf_len(info->p2ps_instance); 2233 2234 while (len) { 2235 u32 id; 2236 u16 methods; 2237 u8 str_len; 2238 2239 if (len < 4 + 2 + 1) 2240 break; 2241 id = WPA_GET_LE32(buf); 2242 buf += sizeof(u32); 2243 methods = WPA_GET_BE16(buf); 2244 buf += sizeof(u16); 2245 str_len = *buf++; 2246 if (str_len > len - 4 - 2 - 1) 2247 break; 2248 os_memcpy(str, buf, str_len); 2249 str[str_len] = '\0'; 2250 buf += str_len; 2251 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2252 2253 wpa_msg_global(wpa_s, MSG_INFO, 2254 P2P_EVENT_DEVICE_FOUND MACSTR 2255 " p2p_dev_addr=" MACSTR 2256 " pri_dev_type=%s name='%s'" 2257 " config_methods=0x%x" 2258 " dev_capab=0x%x" 2259 " group_capab=0x%x" 2260 " adv_id=%x asp_svc=%s%s", 2261 MAC2STR(addr), 2262 MAC2STR(info->p2p_device_addr), 2263 wps_dev_type_bin2str( 2264 info->pri_dev_type, 2265 devtype, sizeof(devtype)), 2266 info->device_name, methods, 2267 info->dev_capab, info->group_capab, 2268 id, str, 2269 info->vendor_elems ? 2270 " vendor_elems=1" : ""); 2271 } 2272 goto done; 2273 } 2274 2275 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2276 " p2p_dev_addr=" MACSTR 2277 " pri_dev_type=%s name='%s' config_methods=0x%x " 2278 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2279 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2280 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2281 sizeof(devtype)), 2282 info->device_name, info->config_methods, 2283 info->dev_capab, info->group_capab, 2284 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2285 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2286 info->vendor_elems ? " vendor_elems=1" : "", 2287 new_device); 2288 2289 done: 2290 os_free(wfd_dev_info_hex); 2291 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2292 2293 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2294 } 2295 2296 2297 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2298 { 2299 struct wpa_supplicant *wpa_s = ctx; 2300 2301 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2302 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2303 2304 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2305 } 2306 2307 2308 static void wpas_find_stopped(void *ctx) 2309 { 2310 struct wpa_supplicant *wpa_s = ctx; 2311 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2312 wpas_notify_p2p_find_stopped(wpa_s); 2313 } 2314 2315 2316 struct wpas_p2p_listen_work { 2317 unsigned int freq; 2318 unsigned int duration; 2319 struct wpabuf *probe_resp_ie; 2320 }; 2321 2322 2323 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2324 { 2325 if (lwork == NULL) 2326 return; 2327 wpabuf_free(lwork->probe_resp_ie); 2328 os_free(lwork); 2329 } 2330 2331 2332 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2333 { 2334 struct wpas_p2p_listen_work *lwork; 2335 2336 if (!wpa_s->p2p_listen_work) 2337 return; 2338 2339 lwork = wpa_s->p2p_listen_work->ctx; 2340 wpas_p2p_listen_work_free(lwork); 2341 radio_work_done(wpa_s->p2p_listen_work); 2342 wpa_s->p2p_listen_work = NULL; 2343 } 2344 2345 2346 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2347 { 2348 struct wpa_supplicant *wpa_s = work->wpa_s; 2349 struct wpas_p2p_listen_work *lwork = work->ctx; 2350 unsigned int duration; 2351 2352 if (deinit) { 2353 if (work->started) { 2354 wpa_s->p2p_listen_work = NULL; 2355 wpas_stop_listen(wpa_s); 2356 } 2357 wpas_p2p_listen_work_free(lwork); 2358 return; 2359 } 2360 2361 wpa_s->p2p_listen_work = work; 2362 2363 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2364 2365 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2366 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2367 "report received Probe Request frames"); 2368 wpas_p2p_listen_work_done(wpa_s); 2369 return; 2370 } 2371 2372 wpa_s->pending_listen_freq = lwork->freq; 2373 wpa_s->pending_listen_duration = lwork->duration; 2374 2375 duration = lwork->duration; 2376 #ifdef CONFIG_TESTING_OPTIONS 2377 if (wpa_s->extra_roc_dur) { 2378 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2379 duration, duration + wpa_s->extra_roc_dur); 2380 duration += wpa_s->extra_roc_dur; 2381 } 2382 #endif /* CONFIG_TESTING_OPTIONS */ 2383 2384 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2385 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2386 "to remain on channel (%u MHz) for Listen " 2387 "state", lwork->freq); 2388 wpas_p2p_listen_work_done(wpa_s); 2389 wpa_s->pending_listen_freq = 0; 2390 return; 2391 } 2392 wpa_s->off_channel_freq = 0; 2393 wpa_s->roc_waiting_drv_freq = lwork->freq; 2394 } 2395 2396 2397 static int wpas_start_listen(void *ctx, unsigned int freq, 2398 unsigned int duration, 2399 const struct wpabuf *probe_resp_ie) 2400 { 2401 struct wpa_supplicant *wpa_s = ctx; 2402 struct wpas_p2p_listen_work *lwork; 2403 2404 if (wpa_s->p2p_listen_work) { 2405 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2406 return -1; 2407 } 2408 2409 lwork = os_zalloc(sizeof(*lwork)); 2410 if (lwork == NULL) 2411 return -1; 2412 lwork->freq = freq; 2413 lwork->duration = duration; 2414 if (probe_resp_ie) { 2415 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2416 if (lwork->probe_resp_ie == NULL) { 2417 wpas_p2p_listen_work_free(lwork); 2418 return -1; 2419 } 2420 } 2421 2422 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2423 lwork) < 0) { 2424 wpas_p2p_listen_work_free(lwork); 2425 return -1; 2426 } 2427 2428 return 0; 2429 } 2430 2431 2432 static void wpas_stop_listen(void *ctx) 2433 { 2434 struct wpa_supplicant *wpa_s = ctx; 2435 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2436 wpa_drv_cancel_remain_on_channel(wpa_s); 2437 wpa_s->off_channel_freq = 0; 2438 wpa_s->roc_waiting_drv_freq = 0; 2439 } 2440 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2441 2442 /* 2443 * Don't cancel Probe Request RX reporting for a connected P2P Client 2444 * handling Probe Request frames. 2445 */ 2446 if (!wpa_s->p2p_cli_probe) 2447 wpa_drv_probe_req_report(wpa_s, 0); 2448 2449 wpas_p2p_listen_work_done(wpa_s); 2450 } 2451 2452 2453 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2454 unsigned int freq) 2455 { 2456 struct wpa_supplicant *wpa_s = ctx; 2457 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2458 freq); 2459 } 2460 2461 2462 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2463 const u8 *peer, const char *params, 2464 unsigned int generated_pin) 2465 { 2466 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2467 " %08d%s", MAC2STR(peer), generated_pin, params); 2468 } 2469 2470 2471 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2472 const u8 *peer, const char *params) 2473 { 2474 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2475 "%s", MAC2STR(peer), params); 2476 } 2477 2478 2479 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2480 const u8 *dev_addr, const u8 *pri_dev_type, 2481 const char *dev_name, u16 supp_config_methods, 2482 u8 dev_capab, u8 group_capab, const u8 *group_id, 2483 size_t group_id_len) 2484 { 2485 struct wpa_supplicant *wpa_s = ctx; 2486 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2487 char params[300]; 2488 u8 empty_dev_type[8]; 2489 unsigned int generated_pin = 0; 2490 struct wpa_supplicant *group = NULL; 2491 int res; 2492 2493 if (group_id) { 2494 for (group = wpa_s->global->ifaces; group; group = group->next) 2495 { 2496 struct wpa_ssid *s = group->current_ssid; 2497 if (s != NULL && 2498 s->mode == WPAS_MODE_P2P_GO && 2499 group_id_len - ETH_ALEN == s->ssid_len && 2500 os_memcmp(group_id + ETH_ALEN, s->ssid, 2501 s->ssid_len) == 0) 2502 break; 2503 } 2504 } 2505 2506 if (pri_dev_type == NULL) { 2507 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2508 pri_dev_type = empty_dev_type; 2509 } 2510 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2511 " pri_dev_type=%s name='%s' config_methods=0x%x " 2512 "dev_capab=0x%x group_capab=0x%x%s%s", 2513 MAC2STR(dev_addr), 2514 wps_dev_type_bin2str(pri_dev_type, devtype, 2515 sizeof(devtype)), 2516 dev_name, supp_config_methods, dev_capab, group_capab, 2517 group ? " group=" : "", 2518 group ? group->ifname : ""); 2519 if (os_snprintf_error(sizeof(params), res)) 2520 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2521 params[sizeof(params) - 1] = '\0'; 2522 2523 if (config_methods & WPS_CONFIG_DISPLAY) { 2524 generated_pin = wps_generate_pin(); 2525 wpas_prov_disc_local_display(wpa_s, peer, params, 2526 generated_pin); 2527 } else if (config_methods & WPS_CONFIG_KEYPAD) 2528 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2529 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2530 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2531 MACSTR "%s", MAC2STR(peer), params); 2532 2533 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2534 P2P_PROV_DISC_SUCCESS, 2535 config_methods, generated_pin); 2536 } 2537 2538 2539 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2540 { 2541 struct wpa_supplicant *wpa_s = ctx; 2542 unsigned int generated_pin = 0; 2543 char params[20]; 2544 2545 if (wpa_s->pending_pd_before_join && 2546 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2547 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2548 wpa_s->pending_pd_before_join = 0; 2549 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2550 "join-existing-group operation"); 2551 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2552 return; 2553 } 2554 2555 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2556 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2557 int res; 2558 2559 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2560 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2561 if (os_snprintf_error(sizeof(params), res)) 2562 params[sizeof(params) - 1] = '\0'; 2563 } else 2564 params[0] = '\0'; 2565 2566 if (config_methods & WPS_CONFIG_DISPLAY) 2567 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2568 else if (config_methods & WPS_CONFIG_KEYPAD) { 2569 generated_pin = wps_generate_pin(); 2570 wpas_prov_disc_local_display(wpa_s, peer, params, 2571 generated_pin); 2572 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2573 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2574 MACSTR "%s", MAC2STR(peer), params); 2575 2576 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2577 P2P_PROV_DISC_SUCCESS, 2578 config_methods, generated_pin); 2579 } 2580 2581 2582 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2583 enum p2p_prov_disc_status status, 2584 u32 adv_id, const u8 *adv_mac, 2585 const char *deferred_session_resp) 2586 { 2587 struct wpa_supplicant *wpa_s = ctx; 2588 2589 if (wpa_s->p2p_fallback_to_go_neg) { 2590 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2591 "failed - fall back to GO Negotiation"); 2592 wpa_msg_global(wpa_s->parent, MSG_INFO, 2593 P2P_EVENT_FALLBACK_TO_GO_NEG 2594 "reason=PD-failed"); 2595 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2596 return; 2597 } 2598 2599 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2600 wpa_s->pending_pd_before_join = 0; 2601 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2602 "join-existing-group operation (no ACK for PD " 2603 "Req attempts)"); 2604 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2605 return; 2606 } 2607 2608 if (adv_id && adv_mac && deferred_session_resp) { 2609 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2610 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2611 " deferred_session_resp='%s'", 2612 MAC2STR(peer), status, adv_id, 2613 deferred_session_resp); 2614 } else if (adv_id && adv_mac) { 2615 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2616 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2617 MAC2STR(peer), status, adv_id); 2618 } else { 2619 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2620 " p2p_dev_addr=" MACSTR " status=%d", 2621 MAC2STR(peer), status); 2622 } 2623 2624 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2625 status, 0, 0); 2626 } 2627 2628 2629 static int freq_included(struct wpa_supplicant *wpa_s, 2630 const struct p2p_channels *channels, 2631 unsigned int freq) 2632 { 2633 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2634 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2635 return 1; 2636 return 0; 2637 } 2638 2639 2640 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2641 { 2642 unsigned int num = P2P_MAX_CHANNELS; 2643 int *common_freqs; 2644 int ret; 2645 2646 p2p_go_dump_common_freqs(wpa_s); 2647 common_freqs = os_calloc(num, sizeof(int)); 2648 if (!common_freqs) 2649 return; 2650 2651 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2652 if (ret < 0) { 2653 wpa_dbg(wpa_s, MSG_DEBUG, 2654 "P2P: Failed to get group common freqs"); 2655 os_free(common_freqs); 2656 return; 2657 } 2658 2659 os_free(wpa_s->p2p_group_common_freqs); 2660 wpa_s->p2p_group_common_freqs = common_freqs; 2661 wpa_s->p2p_group_common_freqs_num = num; 2662 p2p_go_dump_common_freqs(wpa_s); 2663 } 2664 2665 2666 /* 2667 * Check if the given frequency is one of the possible operating frequencies 2668 * set after the completion of the GO Negotiation. 2669 */ 2670 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2671 { 2672 unsigned int i; 2673 2674 p2p_go_dump_common_freqs(wpa_s); 2675 2676 /* assume no restrictions */ 2677 if (!wpa_s->p2p_group_common_freqs_num) 2678 return 1; 2679 2680 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2681 if (wpa_s->p2p_group_common_freqs[i] == freq) 2682 return 1; 2683 } 2684 return 0; 2685 } 2686 2687 2688 /** 2689 * Pick the best frequency to use from all the currently used frequencies. 2690 */ 2691 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2692 struct wpa_used_freq_data *freqs, 2693 unsigned int num) 2694 { 2695 unsigned int i, c; 2696 2697 /* find a candidate freq that is supported by P2P */ 2698 for (c = 0; c < num; c++) 2699 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2700 break; 2701 2702 if (c == num) 2703 return 0; 2704 2705 /* once we have a candidate, try to find a 'better' one */ 2706 for (i = c + 1; i < num; i++) { 2707 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2708 continue; 2709 2710 /* 2711 * 1. Infrastructure station interfaces have higher preference. 2712 * 2. P2P Clients have higher preference. 2713 * 3. All others. 2714 */ 2715 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2716 c = i; 2717 break; 2718 } 2719 2720 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2721 c = i; 2722 } 2723 return freqs[c].freq; 2724 } 2725 2726 2727 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2728 const u8 *go_dev_addr, const u8 *ssid, 2729 size_t ssid_len, int *go, u8 *group_bssid, 2730 int *force_freq, int persistent_group, 2731 const struct p2p_channels *channels, 2732 int dev_pw_id) 2733 { 2734 struct wpa_supplicant *wpa_s = ctx; 2735 struct wpa_ssid *s; 2736 struct wpa_used_freq_data *freqs; 2737 struct wpa_supplicant *grp; 2738 int best_freq; 2739 2740 if (!persistent_group) { 2741 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2742 " to join an active group (SSID: %s)", 2743 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2744 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2745 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2746 == 0 || 2747 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2748 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2749 "authorized invitation"); 2750 goto accept_inv; 2751 } 2752 2753 #ifdef CONFIG_WPS_NFC 2754 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2755 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2756 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2757 wpa_s->p2p_wps_method = WPS_NFC; 2758 wpa_s->pending_join_wps_method = WPS_NFC; 2759 os_memcpy(wpa_s->pending_join_dev_addr, 2760 go_dev_addr, ETH_ALEN); 2761 os_memcpy(wpa_s->pending_join_iface_addr, 2762 bssid, ETH_ALEN); 2763 goto accept_inv; 2764 } 2765 #endif /* CONFIG_WPS_NFC */ 2766 2767 /* 2768 * Do not accept the invitation automatically; notify user and 2769 * request approval. 2770 */ 2771 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2772 } 2773 2774 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2775 if (grp) { 2776 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2777 "running persistent group"); 2778 if (*go) 2779 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2780 goto accept_inv; 2781 } 2782 2783 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2784 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2785 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2786 "invitation to re-invoke a persistent group"); 2787 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2788 } else if (!wpa_s->conf->persistent_reconnect) 2789 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2790 2791 for (s = wpa_s->conf->ssid; s; s = s->next) { 2792 if (s->disabled == 2 && 2793 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2794 s->ssid_len == ssid_len && 2795 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2796 break; 2797 } 2798 2799 if (!s) { 2800 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2801 " requested reinvocation of an unknown group", 2802 MAC2STR(sa)); 2803 return P2P_SC_FAIL_UNKNOWN_GROUP; 2804 } 2805 2806 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2807 *go = 1; 2808 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2809 wpa_printf(MSG_DEBUG, "P2P: The only available " 2810 "interface is already in use - reject " 2811 "invitation"); 2812 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2813 } 2814 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2815 } else if (s->mode == WPAS_MODE_P2P_GO) { 2816 *go = 1; 2817 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2818 { 2819 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2820 "interface address for the group"); 2821 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2822 } 2823 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2824 ETH_ALEN); 2825 } 2826 2827 accept_inv: 2828 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2829 2830 best_freq = 0; 2831 freqs = os_calloc(wpa_s->num_multichan_concurrent, 2832 sizeof(struct wpa_used_freq_data)); 2833 if (freqs) { 2834 int num_channels = wpa_s->num_multichan_concurrent; 2835 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 2836 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 2837 os_free(freqs); 2838 } 2839 2840 /* Get one of the frequencies currently in use */ 2841 if (best_freq > 0) { 2842 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 2843 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 2844 2845 if (wpa_s->num_multichan_concurrent < 2 || 2846 wpas_p2p_num_unused_channels(wpa_s) < 1) { 2847 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 2848 *force_freq = best_freq; 2849 } 2850 } 2851 2852 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 2853 wpas_p2p_num_unused_channels(wpa_s) > 0) { 2854 if (*go == 0) { 2855 /* We are the client */ 2856 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 2857 "running a GO but we are capable of MCC, " 2858 "figure out the best channel to use"); 2859 *force_freq = 0; 2860 } else if (!freq_included(wpa_s, channels, *force_freq)) { 2861 /* We are the GO, and *force_freq is not in the 2862 * intersection */ 2863 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 2864 "in intersection but we are capable of MCC, " 2865 "figure out the best channel to use", 2866 *force_freq); 2867 *force_freq = 0; 2868 } 2869 } 2870 2871 return P2P_SC_SUCCESS; 2872 } 2873 2874 2875 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2876 const u8 *ssid, size_t ssid_len, 2877 const u8 *go_dev_addr, u8 status, 2878 int op_freq) 2879 { 2880 struct wpa_supplicant *wpa_s = ctx; 2881 struct wpa_ssid *s; 2882 2883 for (s = wpa_s->conf->ssid; s; s = s->next) { 2884 if (s->disabled == 2 && 2885 s->ssid_len == ssid_len && 2886 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2887 break; 2888 } 2889 2890 if (status == P2P_SC_SUCCESS) { 2891 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2892 " was accepted; op_freq=%d MHz, SSID=%s", 2893 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 2894 if (s) { 2895 int go = s->mode == WPAS_MODE_P2P_GO; 2896 wpas_p2p_group_add_persistent( 2897 wpa_s, s, go, 0, op_freq, 0, 0, NULL, 2898 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 2899 1); 2900 } else if (bssid) { 2901 wpa_s->user_initiated_pd = 0; 2902 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2903 wpa_s->p2p_wps_method, 0, op_freq, 2904 ssid, ssid_len); 2905 } 2906 return; 2907 } 2908 2909 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2910 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2911 " was rejected (status %u)", MAC2STR(sa), status); 2912 return; 2913 } 2914 2915 if (!s) { 2916 if (bssid) { 2917 wpa_msg_global(wpa_s, MSG_INFO, 2918 P2P_EVENT_INVITATION_RECEIVED 2919 "sa=" MACSTR " go_dev_addr=" MACSTR 2920 " bssid=" MACSTR " unknown-network", 2921 MAC2STR(sa), MAC2STR(go_dev_addr), 2922 MAC2STR(bssid)); 2923 } else { 2924 wpa_msg_global(wpa_s, MSG_INFO, 2925 P2P_EVENT_INVITATION_RECEIVED 2926 "sa=" MACSTR " go_dev_addr=" MACSTR 2927 " unknown-network", 2928 MAC2STR(sa), MAC2STR(go_dev_addr)); 2929 } 2930 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 2931 bssid, 0, op_freq); 2932 return; 2933 } 2934 2935 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 2936 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2937 "sa=" MACSTR " persistent=%d freq=%d", 2938 MAC2STR(sa), s->id, op_freq); 2939 } else { 2940 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2941 "sa=" MACSTR " persistent=%d", 2942 MAC2STR(sa), s->id); 2943 } 2944 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 2945 s->id, op_freq); 2946 } 2947 2948 2949 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 2950 struct wpa_ssid *ssid, 2951 const u8 *peer, int inv) 2952 { 2953 size_t i; 2954 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 2955 2956 if (ssid == NULL) 2957 return; 2958 2959 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 2960 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 2961 ETH_ALEN) == 0) 2962 break; 2963 } 2964 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 2965 if (ssid->mode != WPAS_MODE_P2P_GO && 2966 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 2967 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 2968 "due to invitation result", ssid->id); 2969 wpas_notify_network_removed(wpa_s, ssid); 2970 wpa_config_remove_network(wpa_s->conf, ssid->id); 2971 return; 2972 } 2973 return; /* Peer not found in client list */ 2974 } 2975 2976 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 2977 "group %d client list%s", 2978 MAC2STR(peer), ssid->id, 2979 inv ? " due to invitation result" : ""); 2980 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 2981 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 2982 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 2983 ssid->num_p2p_clients--; 2984 if (p2p_wpa_s->conf->update_config && 2985 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 2986 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 2987 } 2988 2989 2990 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 2991 const u8 *peer) 2992 { 2993 struct wpa_ssid *ssid; 2994 2995 wpa_s = wpa_s->global->p2p_invite_group; 2996 if (wpa_s == NULL) 2997 return; /* No known invitation group */ 2998 ssid = wpa_s->current_ssid; 2999 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3000 !ssid->p2p_persistent_group) 3001 return; /* Not operating as a GO in persistent group */ 3002 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer, 3003 ssid->ssid, ssid->ssid_len); 3004 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3005 } 3006 3007 3008 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3009 const struct p2p_channels *channels, 3010 const u8 *peer, int neg_freq, 3011 int peer_oper_freq) 3012 { 3013 struct wpa_supplicant *wpa_s = ctx; 3014 struct wpa_ssid *ssid; 3015 int freq; 3016 3017 if (bssid) { 3018 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3019 "status=%d " MACSTR, 3020 status, MAC2STR(bssid)); 3021 } else { 3022 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3023 "status=%d ", status); 3024 } 3025 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3026 3027 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3028 status, MAC2STR(peer)); 3029 if (wpa_s->pending_invite_ssid_id == -1) { 3030 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3031 wpas_remove_persistent_client(wpa_s, peer); 3032 return; /* Invitation to active group */ 3033 } 3034 3035 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3036 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3037 "invitation exchange to indicate readiness for " 3038 "re-invocation"); 3039 } 3040 3041 if (status != P2P_SC_SUCCESS) { 3042 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3043 ssid = wpa_config_get_network( 3044 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3045 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3046 } 3047 wpas_p2p_remove_pending_group_interface(wpa_s); 3048 return; 3049 } 3050 3051 ssid = wpa_config_get_network(wpa_s->conf, 3052 wpa_s->pending_invite_ssid_id); 3053 if (ssid == NULL) { 3054 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3055 "data matching with invitation"); 3056 return; 3057 } 3058 3059 /* 3060 * The peer could have missed our ctrl::ack frame for Invitation 3061 * Response and continue retransmitting the frame. To reduce the 3062 * likelihood of the peer not getting successful TX status for the 3063 * Invitation Response frame, wait a short time here before starting 3064 * the persistent group so that we will remain on the current channel to 3065 * acknowledge any possible retransmission from the peer. 3066 */ 3067 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3068 "starting persistent group"); 3069 os_sleep(0, 50000); 3070 3071 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3072 freq_included(wpa_s, channels, neg_freq)) 3073 freq = neg_freq; 3074 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3075 freq_included(wpa_s, channels, peer_oper_freq)) 3076 freq = peer_oper_freq; 3077 else 3078 freq = 0; 3079 3080 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3081 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3082 wpas_p2p_group_add_persistent(wpa_s, ssid, 3083 ssid->mode == WPAS_MODE_P2P_GO, 3084 wpa_s->p2p_persistent_go_freq, 3085 freq, 3086 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3087 channels, 3088 ssid->mode == WPAS_MODE_P2P_GO ? 3089 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3090 0, 1); 3091 } 3092 3093 3094 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3095 unsigned int freq) 3096 { 3097 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3098 return 1; 3099 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3100 } 3101 3102 3103 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3104 { 3105 reg->channel[reg->channels] = chan; 3106 reg->channels++; 3107 } 3108 3109 3110 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3111 struct p2p_channels *chan, 3112 struct p2p_channels *cli_chan) 3113 { 3114 int i, cla = 0; 3115 3116 wpa_s->global->p2p_24ghz_social_channels = 1; 3117 3118 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3119 3120 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3121 "band"); 3122 3123 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3124 chan->reg_class[cla].reg_class = 81; 3125 chan->reg_class[cla].channels = 0; 3126 for (i = 0; i < 11; i++) { 3127 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3128 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3129 } 3130 if (chan->reg_class[cla].channels) 3131 cla++; 3132 3133 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3134 "band"); 3135 3136 /* Operating class 115 - 5 GHz, channels 36-48 */ 3137 chan->reg_class[cla].reg_class = 115; 3138 chan->reg_class[cla].channels = 0; 3139 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3140 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3141 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3142 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3143 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3144 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3145 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3146 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3147 if (chan->reg_class[cla].channels) 3148 cla++; 3149 3150 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3151 "band"); 3152 3153 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3154 chan->reg_class[cla].reg_class = 124; 3155 chan->reg_class[cla].channels = 0; 3156 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3157 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3158 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3159 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3160 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3161 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3162 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3163 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3164 if (chan->reg_class[cla].channels) 3165 cla++; 3166 3167 chan->reg_classes = cla; 3168 return 0; 3169 } 3170 3171 3172 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 3173 u16 num_modes, 3174 enum hostapd_hw_mode mode) 3175 { 3176 u16 i; 3177 3178 for (i = 0; i < num_modes; i++) { 3179 if (modes[i].mode == mode) 3180 return &modes[i]; 3181 } 3182 3183 return NULL; 3184 } 3185 3186 3187 enum chan_allowed { 3188 NOT_ALLOWED, NO_IR, ALLOWED 3189 }; 3190 3191 static int has_channel(struct wpa_global *global, 3192 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3193 { 3194 int i; 3195 unsigned int freq; 3196 3197 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3198 chan * 5; 3199 if (wpas_p2p_disallowed_freq(global, freq)) 3200 return NOT_ALLOWED; 3201 3202 for (i = 0; i < mode->num_channels; i++) { 3203 if (mode->channels[i].chan == chan) { 3204 if (flags) 3205 *flags = mode->channels[i].flag; 3206 if (mode->channels[i].flag & 3207 (HOSTAPD_CHAN_DISABLED | 3208 HOSTAPD_CHAN_RADAR)) 3209 return NOT_ALLOWED; 3210 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3211 return NO_IR; 3212 return ALLOWED; 3213 } 3214 } 3215 3216 return NOT_ALLOWED; 3217 } 3218 3219 3220 struct p2p_oper_class_map { 3221 enum hostapd_hw_mode mode; 3222 u8 op_class; 3223 u8 min_chan; 3224 u8 max_chan; 3225 u8 inc; 3226 enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw; 3227 }; 3228 3229 static const struct p2p_oper_class_map op_class[] = { 3230 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 3231 #if 0 /* Do not enable HT40 on 2 GHz for now */ 3232 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 3233 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 3234 #endif 3235 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 3236 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 3237 { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 }, 3238 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 3239 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 3240 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 3241 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 3242 3243 /* 3244 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center 3245 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of 3246 * 80 MHz, but currently use the following definition for simplicity 3247 * (these center frequencies are not actual channels, which makes 3248 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of 3249 * removing invalid channels. 3250 */ 3251 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 }, 3252 { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 }, 3253 { -1, 0, 0, 0, 0, BW20 } 3254 }; 3255 3256 3257 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3258 struct hostapd_hw_modes *mode, 3259 u8 channel) 3260 { 3261 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3262 unsigned int i; 3263 3264 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3265 return 0; 3266 3267 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3268 /* 3269 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3270 * so the center channel is 6 channels away from the start/end. 3271 */ 3272 if (channel >= center_channels[i] - 6 && 3273 channel <= center_channels[i] + 6) 3274 return center_channels[i]; 3275 3276 return 0; 3277 } 3278 3279 3280 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3281 struct hostapd_hw_modes *mode, 3282 u8 channel, u8 bw) 3283 { 3284 u8 center_chan; 3285 int i, flags; 3286 enum chan_allowed res, ret = ALLOWED; 3287 3288 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3289 if (!center_chan) 3290 return NOT_ALLOWED; 3291 if (center_chan >= 58 && center_chan <= 138) 3292 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3293 3294 /* check all the channels are available */ 3295 for (i = 0; i < 4; i++) { 3296 int adj_chan = center_chan - 6 + i * 4; 3297 3298 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3299 if (res == NOT_ALLOWED) 3300 return NOT_ALLOWED; 3301 if (res == NO_IR) 3302 ret = NO_IR; 3303 3304 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3305 return NOT_ALLOWED; 3306 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3307 return NOT_ALLOWED; 3308 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3309 return NOT_ALLOWED; 3310 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3311 return NOT_ALLOWED; 3312 } 3313 3314 return ret; 3315 } 3316 3317 3318 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3319 struct hostapd_hw_modes *mode, 3320 u8 channel, u8 bw) 3321 { 3322 int flag = 0; 3323 enum chan_allowed res, res2; 3324 3325 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3326 if (bw == BW40MINUS) { 3327 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3328 return NOT_ALLOWED; 3329 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3330 } else if (bw == BW40PLUS) { 3331 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3332 return NOT_ALLOWED; 3333 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3334 } else if (bw == BW80) { 3335 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3336 } 3337 3338 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3339 return NOT_ALLOWED; 3340 if (res == NO_IR || res2 == NO_IR) 3341 return NO_IR; 3342 return res; 3343 } 3344 3345 3346 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3347 struct p2p_channels *chan, 3348 struct p2p_channels *cli_chan) 3349 { 3350 struct hostapd_hw_modes *mode; 3351 int cla, op, cli_cla; 3352 3353 if (wpa_s->hw.modes == NULL) { 3354 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3355 "of all supported channels; assume dualband " 3356 "support"); 3357 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3358 } 3359 3360 cla = cli_cla = 0; 3361 3362 for (op = 0; op_class[op].op_class; op++) { 3363 const struct p2p_oper_class_map *o = &op_class[op]; 3364 u8 ch; 3365 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3366 3367 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3368 if (mode == NULL) 3369 continue; 3370 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3371 wpa_s->global->p2p_24ghz_social_channels = 1; 3372 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3373 enum chan_allowed res; 3374 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3375 if (res == ALLOWED) { 3376 if (reg == NULL) { 3377 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3378 o->op_class); 3379 reg = &chan->reg_class[cla]; 3380 cla++; 3381 reg->reg_class = o->op_class; 3382 } 3383 reg->channel[reg->channels] = ch; 3384 reg->channels++; 3385 } else if (res == NO_IR && 3386 wpa_s->conf->p2p_add_cli_chan) { 3387 if (cli_reg == NULL) { 3388 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3389 o->op_class); 3390 cli_reg = &cli_chan->reg_class[cli_cla]; 3391 cli_cla++; 3392 cli_reg->reg_class = o->op_class; 3393 } 3394 cli_reg->channel[cli_reg->channels] = ch; 3395 cli_reg->channels++; 3396 } 3397 } 3398 if (reg) { 3399 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3400 reg->channel, reg->channels); 3401 } 3402 if (cli_reg) { 3403 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3404 cli_reg->channel, cli_reg->channels); 3405 } 3406 } 3407 3408 chan->reg_classes = cla; 3409 cli_chan->reg_classes = cli_cla; 3410 3411 return 0; 3412 } 3413 3414 3415 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3416 struct hostapd_hw_modes *mode, u8 channel) 3417 { 3418 int op; 3419 enum chan_allowed ret; 3420 3421 for (op = 0; op_class[op].op_class; op++) { 3422 const struct p2p_oper_class_map *o = &op_class[op]; 3423 u8 ch; 3424 3425 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3426 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3427 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3428 ch != channel) 3429 continue; 3430 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3431 if (ret == ALLOWED) 3432 return (o->bw == BW40MINUS) ? -1 : 1; 3433 } 3434 } 3435 return 0; 3436 } 3437 3438 3439 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3440 struct hostapd_hw_modes *mode, u8 channel) 3441 { 3442 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3443 return 0; 3444 3445 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3446 } 3447 3448 3449 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3450 size_t buf_len) 3451 { 3452 struct wpa_supplicant *wpa_s = ctx; 3453 3454 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3455 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3456 break; 3457 } 3458 if (wpa_s == NULL) 3459 return -1; 3460 3461 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3462 } 3463 3464 3465 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3466 const u8 *ssid, size_t ssid_len) 3467 { 3468 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3469 struct wpa_ssid *s = wpa_s->current_ssid; 3470 if (s == NULL) 3471 continue; 3472 if (s->mode != WPAS_MODE_P2P_GO && 3473 s->mode != WPAS_MODE_AP && 3474 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3475 continue; 3476 if (s->ssid_len != ssid_len || 3477 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3478 continue; 3479 return wpa_s; 3480 } 3481 3482 return NULL; 3483 3484 } 3485 3486 3487 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3488 const u8 *peer_dev_addr) 3489 { 3490 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3491 struct wpa_ssid *ssid = wpa_s->current_ssid; 3492 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3493 continue; 3494 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3495 return wpa_s; 3496 } 3497 3498 return NULL; 3499 } 3500 3501 3502 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3503 { 3504 struct wpa_supplicant *wpa_s = ctx; 3505 3506 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3507 } 3508 3509 3510 static int wpas_is_concurrent_session_active(void *ctx) 3511 { 3512 struct wpa_supplicant *wpa_s = ctx; 3513 struct wpa_supplicant *ifs; 3514 3515 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3516 if (ifs == wpa_s) 3517 continue; 3518 if (ifs->wpa_state > WPA_ASSOCIATED) 3519 return 1; 3520 } 3521 return 0; 3522 } 3523 3524 3525 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3526 { 3527 struct wpa_supplicant *wpa_s = ctx; 3528 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3529 } 3530 3531 3532 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3533 const char *conf_p2p_dev) 3534 { 3535 struct wpa_interface iface; 3536 struct wpa_supplicant *p2pdev_wpa_s; 3537 char ifname[100]; 3538 char force_name[100]; 3539 int ret; 3540 3541 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3542 wpa_s->ifname); 3543 if (os_snprintf_error(sizeof(ifname), ret)) 3544 return -1; 3545 force_name[0] = '\0'; 3546 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3547 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3548 force_name, wpa_s->pending_interface_addr, NULL); 3549 if (ret < 0) { 3550 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3551 return ret; 3552 } 3553 os_strlcpy(wpa_s->pending_interface_name, ifname, 3554 sizeof(wpa_s->pending_interface_name)); 3555 3556 os_memset(&iface, 0, sizeof(iface)); 3557 iface.p2p_mgmt = 1; 3558 iface.ifname = wpa_s->pending_interface_name; 3559 iface.driver = wpa_s->driver->name; 3560 iface.driver_param = wpa_s->conf->driver_param; 3561 3562 /* 3563 * If a P2P Device configuration file was given, use it as the interface 3564 * configuration file (instead of using parent's configuration file. 3565 */ 3566 if (conf_p2p_dev) { 3567 iface.confname = conf_p2p_dev; 3568 iface.ctrl_interface = NULL; 3569 } else { 3570 iface.confname = wpa_s->confname; 3571 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3572 } 3573 3574 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3575 if (!p2pdev_wpa_s) { 3576 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3577 return -1; 3578 } 3579 3580 wpa_s->pending_interface_name[0] = '\0'; 3581 return 0; 3582 } 3583 3584 3585 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3586 const u8 *noa, size_t noa_len) 3587 { 3588 struct wpa_supplicant *wpa_s, *intf = ctx; 3589 char hex[100]; 3590 3591 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3592 if (wpa_s->waiting_presence_resp) 3593 break; 3594 } 3595 if (!wpa_s) { 3596 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3597 return; 3598 } 3599 wpa_s->waiting_presence_resp = 0; 3600 3601 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3602 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3603 " status=%u noa=%s", MAC2STR(src), status, hex); 3604 } 3605 3606 3607 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3608 size_t ssid_len, u8 *go_dev_addr, 3609 u8 *ret_ssid, size_t *ret_ssid_len, 3610 u8 *intended_iface_addr) 3611 { 3612 struct wpa_supplicant *wpa_s = ctx; 3613 struct wpa_ssid *s; 3614 3615 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3616 if (s) { 3617 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3618 *ret_ssid_len = s->ssid_len; 3619 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3620 3621 if (s->mode != WPAS_MODE_P2P_GO) { 3622 os_memset(intended_iface_addr, 0, ETH_ALEN); 3623 } else if (wpas_p2p_create_iface(wpa_s)) { 3624 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3625 return 0; 3626 3627 os_memcpy(intended_iface_addr, 3628 wpa_s->pending_interface_addr, ETH_ALEN); 3629 } else { 3630 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3631 ETH_ALEN); 3632 } 3633 return 1; 3634 } 3635 3636 return 0; 3637 } 3638 3639 3640 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3641 u8 *ssid, size_t *ssid_len, int *group_iface) 3642 { 3643 struct wpa_supplicant *wpa_s = ctx; 3644 struct wpa_ssid *s; 3645 u8 bssid[ETH_ALEN]; 3646 3647 /* 3648 * group_iface will be set to 1 only if a dedicated interface for P2P 3649 * role is required. First, we try to reuse an active GO. However, 3650 * if it is not present, we will try to reactivate an existing 3651 * persistent group and set group_iface to 1, so the caller will know 3652 * that the pending interface should be used. 3653 */ 3654 *group_iface = 0; 3655 s = wpas_p2p_group_go_ssid(wpa_s, bssid); 3656 if (!s) { 3657 s = wpas_p2p_get_persistent_go(wpa_s); 3658 *group_iface = wpas_p2p_create_iface(wpa_s); 3659 if (s) 3660 os_memcpy(bssid, s->bssid, ETH_ALEN); 3661 else 3662 return 0; 3663 } 3664 3665 os_memcpy(intended_addr, bssid, ETH_ALEN); 3666 os_memcpy(ssid, s->ssid, s->ssid_len); 3667 *ssid_len = s->ssid_len; 3668 3669 return 1; 3670 } 3671 3672 3673 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3674 const u8 *ssid, size_t ssid_len) 3675 { 3676 struct wpa_supplicant *wpa_s = ctx; 3677 struct wpa_ssid *s; 3678 int save_config = 0; 3679 size_t i; 3680 3681 /* Start with our first choice of Persistent Groups */ 3682 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3683 if (go && ssid && ssid_len && 3684 s->ssid_len == ssid_len && 3685 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3686 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3687 break; 3688 3689 /* Remove stale persistent group */ 3690 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3691 wpa_config_remove_network(wpa_s->conf, s->id); 3692 save_config = 1; 3693 continue; 3694 } 3695 3696 for (i = 0; i < s->num_p2p_clients; i++) { 3697 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3698 peer, ETH_ALEN) != 0) 3699 continue; 3700 3701 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3702 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3703 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3704 break; 3705 } 3706 s->num_p2p_clients--; 3707 save_config = 1; 3708 } 3709 3710 if (save_config) 3711 p2p_config_write(wpa_s); 3712 3713 /* Return TRUE if valid SSID remains */ 3714 return s != NULL; 3715 } 3716 3717 3718 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3719 const u8 *feat_cap, size_t feat_cap_len) 3720 { 3721 static const char pref[] = " feature_cap="; 3722 int ret; 3723 3724 buf[0] = '\0'; 3725 3726 /* 3727 * We expect a feature capability to contain at least one byte to be 3728 * reported. The string buffer provided by the caller function is 3729 * expected to be big enough to contain all bytes of the attribute for 3730 * known specifications. This function truncates the reported bytes if 3731 * the feature capability data exceeds the string buffer size. 3732 */ 3733 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 3734 return; 3735 3736 os_memcpy(buf, pref, sizeof(pref)); 3737 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 3738 buf_len - sizeof(pref) + 1, 3739 feat_cap, feat_cap_len); 3740 3741 if (ret != (2 * (int) feat_cap_len)) 3742 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 3743 } 3744 3745 3746 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 3747 const u8 *adv_mac, const u8 *ses_mac, 3748 const u8 *grp_mac, u32 adv_id, u32 ses_id, 3749 u8 conncap, int passwd_id, 3750 const u8 *persist_ssid, 3751 size_t persist_ssid_size, int response_done, 3752 int prov_start, const char *session_info, 3753 const u8 *feat_cap, size_t feat_cap_len) 3754 { 3755 struct wpa_supplicant *wpa_s = ctx; 3756 u8 mac[ETH_ALEN]; 3757 struct wpa_ssid *persistent_go, *stale, *s; 3758 int save_config = 0; 3759 struct wpa_supplicant *go_wpa_s; 3760 char feat_cap_str[256]; 3761 3762 if (!dev) 3763 return; 3764 3765 os_memset(mac, 0, ETH_ALEN); 3766 if (!adv_mac) 3767 adv_mac = mac; 3768 if (!ses_mac) 3769 ses_mac = mac; 3770 if (!grp_mac) 3771 grp_mac = mac; 3772 3773 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 3774 feat_cap, feat_cap_len); 3775 3776 if (prov_start) { 3777 if (session_info == NULL) { 3778 wpa_msg_global(wpa_s, MSG_INFO, 3779 P2P_EVENT_P2PS_PROVISION_START MACSTR 3780 " adv_id=%x conncap=%x" 3781 " adv_mac=" MACSTR 3782 " session=%x mac=" MACSTR 3783 " dev_passwd_id=%d%s", 3784 MAC2STR(dev), adv_id, conncap, 3785 MAC2STR(adv_mac), 3786 ses_id, MAC2STR(ses_mac), 3787 passwd_id, feat_cap_str); 3788 } else { 3789 wpa_msg_global(wpa_s, MSG_INFO, 3790 P2P_EVENT_P2PS_PROVISION_START MACSTR 3791 " adv_id=%x conncap=%x" 3792 " adv_mac=" MACSTR 3793 " session=%x mac=" MACSTR 3794 " dev_passwd_id=%d info='%s'%s", 3795 MAC2STR(dev), adv_id, conncap, 3796 MAC2STR(adv_mac), 3797 ses_id, MAC2STR(ses_mac), 3798 passwd_id, session_info, feat_cap_str); 3799 } 3800 return; 3801 } 3802 3803 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 3804 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 3805 3806 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 3807 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 3808 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 3809 3810 if (persistent_go && !persistent_go->num_p2p_clients) { 3811 /* remove empty persistent GO */ 3812 wpa_config_remove_network(wpa_s->conf, 3813 persistent_go->id); 3814 } 3815 3816 wpa_msg_global(wpa_s, MSG_INFO, 3817 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 3818 " status=%d" 3819 " adv_id=%x adv_mac=" MACSTR 3820 " session=%x mac=" MACSTR "%s", 3821 MAC2STR(dev), status, 3822 adv_id, MAC2STR(adv_mac), 3823 ses_id, MAC2STR(ses_mac), feat_cap_str); 3824 return; 3825 } 3826 3827 /* Clean up stale persistent groups with this device */ 3828 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 3829 persist_ssid_size); 3830 3831 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 3832 is_zero_ether_addr(grp_mac)) { 3833 wpa_dbg(wpa_s, MSG_ERROR, 3834 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 3835 return; 3836 } 3837 3838 for (;;) { 3839 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 3840 if (!stale) 3841 break; 3842 3843 if (s && s->ssid_len == stale->ssid_len && 3844 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 3845 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 3846 break; 3847 3848 /* Remove stale persistent group */ 3849 if (stale->mode != WPAS_MODE_P2P_GO || 3850 stale->num_p2p_clients <= 1) { 3851 wpa_config_remove_network(wpa_s->conf, stale->id); 3852 } else { 3853 size_t i; 3854 3855 for (i = 0; i < stale->num_p2p_clients; i++) { 3856 if (os_memcmp(stale->p2p_client_list + 3857 i * ETH_ALEN, 3858 dev, ETH_ALEN) == 0) { 3859 os_memmove(stale->p2p_client_list + 3860 i * ETH_ALEN, 3861 stale->p2p_client_list + 3862 (i + 1) * ETH_ALEN, 3863 (stale->num_p2p_clients - 3864 i - 1) * ETH_ALEN); 3865 break; 3866 } 3867 } 3868 stale->num_p2p_clients--; 3869 } 3870 save_config = 1; 3871 } 3872 3873 if (save_config) 3874 p2p_config_write(wpa_s); 3875 3876 if (s) { 3877 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 3878 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 3879 3880 if (persistent_go && s != persistent_go && 3881 !persistent_go->num_p2p_clients) { 3882 /* remove empty persistent GO */ 3883 wpa_config_remove_network(wpa_s->conf, 3884 persistent_go->id); 3885 /* Save config */ 3886 } 3887 3888 wpa_msg_global(wpa_s, MSG_INFO, 3889 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 3890 " status=%d" 3891 " adv_id=%x adv_mac=" MACSTR 3892 " session=%x mac=" MACSTR 3893 " persist=%d%s", 3894 MAC2STR(dev), status, 3895 adv_id, MAC2STR(adv_mac), 3896 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 3897 return; 3898 } 3899 3900 if (conncap == P2PS_SETUP_GROUP_OWNER) { 3901 /* 3902 * We need to copy the interface name. Simply saving a 3903 * pointer isn't enough, since if we use pending_interface_name 3904 * it will be overwritten when the group is added. 3905 */ 3906 char go_ifname[100]; 3907 3908 go_ifname[0] = '\0'; 3909 if (!go_wpa_s) { 3910 wpa_s->global->pending_p2ps_group = 1; 3911 3912 if (!wpas_p2p_create_iface(wpa_s)) 3913 os_memcpy(go_ifname, wpa_s->ifname, 3914 sizeof(go_ifname)); 3915 else if (wpa_s->pending_interface_name[0]) 3916 os_memcpy(go_ifname, 3917 wpa_s->pending_interface_name, 3918 sizeof(go_ifname)); 3919 3920 if (!go_ifname[0]) { 3921 wpas_p2ps_prov_complete( 3922 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 3923 dev, adv_mac, ses_mac, 3924 grp_mac, adv_id, ses_id, 0, 0, 3925 NULL, 0, 0, 0, NULL, NULL, 0); 3926 return; 3927 } 3928 3929 /* If PD Resp complete, start up the GO */ 3930 if (response_done && persistent_go) { 3931 wpas_p2p_group_add_persistent( 3932 wpa_s, persistent_go, 3933 0, 0, 0, 0, 0, NULL, 3934 persistent_go->mode == 3935 WPAS_MODE_P2P_GO ? 3936 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3937 0, 0); 3938 } else if (response_done) { 3939 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0); 3940 } 3941 3942 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 3943 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 3944 ETH_ALEN); 3945 wpa_s->p2ps_method_config_any = 1; 3946 } 3947 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 3948 os_memcpy(go_ifname, go_wpa_s->ifname, 3949 sizeof(go_ifname)); 3950 3951 if (is_zero_ether_addr(grp_mac)) { 3952 wpa_dbg(go_wpa_s, MSG_DEBUG, 3953 "P2P: Setting PIN-1 for ANY"); 3954 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 3955 "12345670", NULL, 0, 3956 0); 3957 } else { 3958 wpa_dbg(go_wpa_s, MSG_DEBUG, 3959 "P2P: Setting PIN-1 for " MACSTR, 3960 MAC2STR(grp_mac)); 3961 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 3962 "12345670", NULL, 0, 3963 0); 3964 } 3965 3966 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 3967 wpa_s->p2ps_method_config_any = 1; 3968 } 3969 3970 wpa_msg_global(wpa_s, MSG_INFO, 3971 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 3972 " status=%d conncap=%x" 3973 " adv_id=%x adv_mac=" MACSTR 3974 " session=%x mac=" MACSTR 3975 " dev_passwd_id=%d go=%s%s", 3976 MAC2STR(dev), status, conncap, 3977 adv_id, MAC2STR(adv_mac), 3978 ses_id, MAC2STR(ses_mac), 3979 passwd_id, go_ifname, feat_cap_str); 3980 return; 3981 } 3982 3983 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 3984 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 3985 3986 if (persistent_go && !persistent_go->num_p2p_clients) { 3987 /* remove empty persistent GO */ 3988 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 3989 } 3990 3991 if (conncap == P2PS_SETUP_CLIENT) { 3992 wpa_msg_global(wpa_s, MSG_INFO, 3993 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 3994 " status=%d conncap=%x" 3995 " adv_id=%x adv_mac=" MACSTR 3996 " session=%x mac=" MACSTR 3997 " dev_passwd_id=%d join=" MACSTR "%s", 3998 MAC2STR(dev), status, conncap, 3999 adv_id, MAC2STR(adv_mac), 4000 ses_id, MAC2STR(ses_mac), 4001 passwd_id, MAC2STR(grp_mac), feat_cap_str); 4002 } else { 4003 wpa_msg_global(wpa_s, MSG_INFO, 4004 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4005 " status=%d conncap=%x" 4006 " adv_id=%x adv_mac=" MACSTR 4007 " session=%x mac=" MACSTR 4008 " dev_passwd_id=%d%s", 4009 MAC2STR(dev), status, conncap, 4010 adv_id, MAC2STR(adv_mac), 4011 ses_id, MAC2STR(ses_mac), 4012 passwd_id, feat_cap_str); 4013 } 4014 } 4015 4016 4017 static int _wpas_p2p_in_progress(void *ctx) 4018 { 4019 struct wpa_supplicant *wpa_s = ctx; 4020 return wpas_p2p_in_progress(wpa_s); 4021 } 4022 4023 4024 static int wpas_prov_disc_resp_cb(void *ctx) 4025 { 4026 struct wpa_supplicant *wpa_s = ctx; 4027 struct wpa_ssid *persistent_go; 4028 4029 if (!wpa_s->global->pending_p2ps_group) 4030 return 0; 4031 4032 wpa_s->global->pending_p2ps_group = 0; 4033 4034 if (wpas_p2p_get_go_group(wpa_s)) 4035 return 0; 4036 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4037 4038 if (persistent_go) { 4039 wpas_p2p_group_add_persistent( 4040 wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL, 4041 persistent_go->mode == WPAS_MODE_P2P_GO ? 4042 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4043 } else { 4044 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0); 4045 } 4046 4047 return 1; 4048 } 4049 4050 4051 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4052 unsigned int *len, 4053 unsigned int *freq_list) 4054 { 4055 struct wpa_supplicant *wpa_s = ctx; 4056 4057 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4058 WPA_IF_P2P_CLIENT, len, freq_list); 4059 } 4060 4061 4062 /** 4063 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4064 * @global: Pointer to global data from wpa_supplicant_init() 4065 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4066 * Returns: 0 on success, -1 on failure 4067 */ 4068 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4069 { 4070 struct p2p_config p2p; 4071 int i; 4072 4073 if (wpa_s->conf->p2p_disabled) 4074 return 0; 4075 4076 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4077 return 0; 4078 4079 if (global->p2p) 4080 return 0; 4081 4082 os_memset(&p2p, 0, sizeof(p2p)); 4083 p2p.cb_ctx = wpa_s; 4084 p2p.debug_print = wpas_p2p_debug_print; 4085 p2p.p2p_scan = wpas_p2p_scan; 4086 p2p.send_action = wpas_send_action; 4087 p2p.send_action_done = wpas_send_action_done; 4088 p2p.go_neg_completed = wpas_go_neg_completed; 4089 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4090 p2p.dev_found = wpas_dev_found; 4091 p2p.dev_lost = wpas_dev_lost; 4092 p2p.find_stopped = wpas_find_stopped; 4093 p2p.start_listen = wpas_start_listen; 4094 p2p.stop_listen = wpas_stop_listen; 4095 p2p.send_probe_resp = wpas_send_probe_resp; 4096 p2p.sd_request = wpas_sd_request; 4097 p2p.sd_response = wpas_sd_response; 4098 p2p.prov_disc_req = wpas_prov_disc_req; 4099 p2p.prov_disc_resp = wpas_prov_disc_resp; 4100 p2p.prov_disc_fail = wpas_prov_disc_fail; 4101 p2p.invitation_process = wpas_invitation_process; 4102 p2p.invitation_received = wpas_invitation_received; 4103 p2p.invitation_result = wpas_invitation_result; 4104 p2p.get_noa = wpas_get_noa; 4105 p2p.go_connected = wpas_go_connected; 4106 p2p.presence_resp = wpas_presence_resp; 4107 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4108 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4109 p2p.get_persistent_group = wpas_get_persistent_group; 4110 p2p.get_go_info = wpas_get_go_info; 4111 p2p.remove_stale_groups = wpas_remove_stale_groups; 4112 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4113 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4114 p2p.p2ps_group_capability = p2ps_group_capability; 4115 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4116 4117 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4118 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4119 p2p.dev_name = wpa_s->conf->device_name; 4120 p2p.manufacturer = wpa_s->conf->manufacturer; 4121 p2p.model_name = wpa_s->conf->model_name; 4122 p2p.model_number = wpa_s->conf->model_number; 4123 p2p.serial_number = wpa_s->conf->serial_number; 4124 if (wpa_s->wps) { 4125 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4126 p2p.config_methods = wpa_s->wps->config_methods; 4127 } 4128 4129 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4130 wpa_printf(MSG_ERROR, 4131 "P2P: Failed to configure supported channel list"); 4132 return -1; 4133 } 4134 4135 if (wpa_s->conf->p2p_listen_reg_class && 4136 wpa_s->conf->p2p_listen_channel) { 4137 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4138 p2p.channel = wpa_s->conf->p2p_listen_channel; 4139 p2p.channel_forced = 1; 4140 } else { 4141 /* 4142 * Pick one of the social channels randomly as the listen 4143 * channel. 4144 */ 4145 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4146 &p2p.channel) != 0) { 4147 wpa_printf(MSG_INFO, 4148 "P2P: No social channels supported by the driver - do not enable P2P"); 4149 return 0; 4150 } 4151 p2p.channel_forced = 0; 4152 } 4153 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4154 p2p.reg_class, p2p.channel); 4155 4156 if (wpa_s->conf->p2p_oper_reg_class && 4157 wpa_s->conf->p2p_oper_channel) { 4158 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4159 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4160 p2p.cfg_op_channel = 1; 4161 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4162 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4163 4164 } else { 4165 /* 4166 * Use random operation channel from 2.4 GHz band social 4167 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4168 * other preference is indicated. 4169 */ 4170 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4171 &p2p.op_channel) != 0) { 4172 wpa_printf(MSG_ERROR, 4173 "P2P: Failed to select random social channel as operation channel"); 4174 return -1; 4175 } 4176 p2p.cfg_op_channel = 0; 4177 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4178 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4179 } 4180 4181 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4182 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4183 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4184 } 4185 4186 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4187 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4188 p2p.country[2] = 0x04; 4189 } else 4190 os_memcpy(p2p.country, "XX\x04", 3); 4191 4192 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4193 WPS_DEV_TYPE_LEN); 4194 4195 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4196 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4197 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4198 4199 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4200 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4201 4202 p2p.max_peers = 100; 4203 4204 if (wpa_s->conf->p2p_ssid_postfix) { 4205 p2p.ssid_postfix_len = 4206 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4207 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4208 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4209 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4210 p2p.ssid_postfix_len); 4211 } 4212 4213 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4214 4215 p2p.max_listen = wpa_s->max_remain_on_chan; 4216 4217 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4218 wpa_s->conf->p2p_passphrase_len <= 63) 4219 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4220 else 4221 p2p.passphrase_len = 8; 4222 4223 global->p2p = p2p_init(&p2p); 4224 if (global->p2p == NULL) 4225 return -1; 4226 global->p2p_init_wpa_s = wpa_s; 4227 4228 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4229 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4230 continue; 4231 p2p_add_wps_vendor_extension( 4232 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4233 } 4234 4235 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4236 4237 return 0; 4238 } 4239 4240 4241 /** 4242 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4243 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4244 * 4245 * This function deinitialize per-interface P2P data. 4246 */ 4247 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4248 { 4249 if (wpa_s->driver && wpa_s->drv_priv) 4250 wpa_drv_probe_req_report(wpa_s, 0); 4251 4252 if (wpa_s->go_params) { 4253 /* Clear any stored provisioning info */ 4254 p2p_clear_provisioning_info( 4255 wpa_s->global->p2p, 4256 wpa_s->go_params->peer_device_addr); 4257 } 4258 4259 os_free(wpa_s->go_params); 4260 wpa_s->go_params = NULL; 4261 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4262 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4263 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4264 wpa_s->p2p_long_listen = 0; 4265 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4266 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4267 wpas_p2p_remove_pending_group_interface(wpa_s); 4268 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4269 wpas_p2p_listen_work_done(wpa_s); 4270 if (wpa_s->p2p_send_action_work) { 4271 os_free(wpa_s->p2p_send_action_work->ctx); 4272 radio_work_done(wpa_s->p2p_send_action_work); 4273 wpa_s->p2p_send_action_work = NULL; 4274 } 4275 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4276 4277 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4278 wpa_s->p2p_oob_dev_pw = NULL; 4279 4280 os_free(wpa_s->p2p_group_common_freqs); 4281 wpa_s->p2p_group_common_freqs = NULL; 4282 wpa_s->p2p_group_common_freqs_num = 0; 4283 4284 /* TODO: remove group interface from the driver if this wpa_s instance 4285 * is on top of a P2P group interface */ 4286 } 4287 4288 4289 /** 4290 * wpas_p2p_deinit_global - Deinitialize global P2P module 4291 * @global: Pointer to global data from wpa_supplicant_init() 4292 * 4293 * This function deinitializes the global (per device) P2P module. 4294 */ 4295 static void wpas_p2p_deinit_global(struct wpa_global *global) 4296 { 4297 struct wpa_supplicant *wpa_s, *tmp; 4298 4299 wpa_s = global->ifaces; 4300 4301 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4302 4303 /* Remove remaining P2P group interfaces */ 4304 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4305 wpa_s = wpa_s->next; 4306 while (wpa_s) { 4307 tmp = global->ifaces; 4308 while (tmp && 4309 (tmp == wpa_s || 4310 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4311 tmp = tmp->next; 4312 } 4313 if (tmp == NULL) 4314 break; 4315 /* Disconnect from the P2P group and deinit the interface */ 4316 wpas_p2p_disconnect(tmp); 4317 } 4318 4319 /* 4320 * Deinit GO data on any possibly remaining interface (if main 4321 * interface is used as GO). 4322 */ 4323 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4324 if (wpa_s->ap_iface) 4325 wpas_p2p_group_deinit(wpa_s); 4326 } 4327 4328 p2p_deinit(global->p2p); 4329 global->p2p = NULL; 4330 global->p2p_init_wpa_s = NULL; 4331 } 4332 4333 4334 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4335 { 4336 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 4337 wpa_s->conf->p2p_no_group_iface) 4338 return 0; /* separate interface disabled per configuration */ 4339 if (wpa_s->drv_flags & 4340 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4341 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4342 return 1; /* P2P group requires a new interface in every case 4343 */ 4344 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4345 return 0; /* driver does not support concurrent operations */ 4346 if (wpa_s->global->ifaces->next) 4347 return 1; /* more that one interface already in use */ 4348 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4349 return 1; /* this interface is already in use */ 4350 return 0; 4351 } 4352 4353 4354 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4355 const u8 *peer_addr, 4356 enum p2p_wps_method wps_method, 4357 int go_intent, const u8 *own_interface_addr, 4358 unsigned int force_freq, int persistent_group, 4359 struct wpa_ssid *ssid, unsigned int pref_freq) 4360 { 4361 if (persistent_group && wpa_s->conf->persistent_reconnect) 4362 persistent_group = 2; 4363 4364 /* 4365 * Increase GO config timeout if HT40 is used since it takes some time 4366 * to scan channels for coex purposes before the BSS can be started. 4367 */ 4368 p2p_set_config_timeout(wpa_s->global->p2p, 4369 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4370 4371 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4372 go_intent, own_interface_addr, force_freq, 4373 persistent_group, ssid ? ssid->ssid : NULL, 4374 ssid ? ssid->ssid_len : 0, 4375 wpa_s->p2p_pd_before_go_neg, pref_freq, 4376 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4377 0); 4378 } 4379 4380 4381 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4382 const u8 *peer_addr, 4383 enum p2p_wps_method wps_method, 4384 int go_intent, const u8 *own_interface_addr, 4385 unsigned int force_freq, int persistent_group, 4386 struct wpa_ssid *ssid, unsigned int pref_freq) 4387 { 4388 if (persistent_group && wpa_s->conf->persistent_reconnect) 4389 persistent_group = 2; 4390 4391 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4392 go_intent, own_interface_addr, force_freq, 4393 persistent_group, ssid ? ssid->ssid : NULL, 4394 ssid ? ssid->ssid_len : 0, pref_freq, 4395 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4396 0); 4397 } 4398 4399 4400 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4401 { 4402 wpa_s->p2p_join_scan_count++; 4403 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4404 wpa_s->p2p_join_scan_count); 4405 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4406 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4407 " for join operationg - stop join attempt", 4408 MAC2STR(wpa_s->pending_join_iface_addr)); 4409 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4410 if (wpa_s->p2p_auto_pd) { 4411 wpa_s->p2p_auto_pd = 0; 4412 wpa_msg_global(wpa_s, MSG_INFO, 4413 P2P_EVENT_PROV_DISC_FAILURE 4414 " p2p_dev_addr=" MACSTR " status=N/A", 4415 MAC2STR(wpa_s->pending_join_dev_addr)); 4416 return; 4417 } 4418 wpa_msg_global(wpa_s->parent, MSG_INFO, 4419 P2P_EVENT_GROUP_FORMATION_FAILURE); 4420 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4421 } 4422 } 4423 4424 4425 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4426 { 4427 int res; 4428 unsigned int num, i; 4429 struct wpa_used_freq_data *freqs; 4430 4431 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4432 /* Multiple channels are supported and not all are in use */ 4433 return 0; 4434 } 4435 4436 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4437 sizeof(struct wpa_used_freq_data)); 4438 if (!freqs) 4439 return 1; 4440 4441 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4442 wpa_s->num_multichan_concurrent); 4443 4444 for (i = 0; i < num; i++) { 4445 if (freqs[i].freq == freq) { 4446 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4447 freq); 4448 res = 0; 4449 goto exit_free; 4450 } 4451 } 4452 4453 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4454 res = 1; 4455 4456 exit_free: 4457 os_free(freqs); 4458 return res; 4459 } 4460 4461 4462 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4463 const u8 *peer_dev_addr) 4464 { 4465 struct wpa_bss *bss; 4466 int updated; 4467 4468 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4469 if (bss == NULL) 4470 return -1; 4471 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4472 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4473 "last scan"); 4474 return 0; 4475 } 4476 4477 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4478 &bss->last_update); 4479 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4480 "%ld.%06ld (%supdated in last scan)", 4481 bss->last_update.sec, bss->last_update.usec, 4482 updated ? "": "not "); 4483 4484 return updated; 4485 } 4486 4487 4488 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4489 struct wpa_scan_results *scan_res) 4490 { 4491 struct wpa_bss *bss = NULL; 4492 int freq; 4493 u8 iface_addr[ETH_ALEN]; 4494 4495 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4496 4497 if (wpa_s->global->p2p_disabled) 4498 return; 4499 4500 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4501 scan_res ? (int) scan_res->num : -1, 4502 wpa_s->p2p_auto_join ? "auto_" : ""); 4503 4504 if (scan_res) 4505 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4506 4507 if (wpa_s->p2p_auto_pd) { 4508 int join = wpas_p2p_peer_go(wpa_s, 4509 wpa_s->pending_join_dev_addr); 4510 if (join == 0 && 4511 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4512 wpa_s->auto_pd_scan_retry++; 4513 bss = wpa_bss_get_bssid_latest( 4514 wpa_s, wpa_s->pending_join_dev_addr); 4515 if (bss) { 4516 freq = bss->freq; 4517 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4518 "the peer " MACSTR " at %d MHz", 4519 wpa_s->auto_pd_scan_retry, 4520 MAC2STR(wpa_s-> 4521 pending_join_dev_addr), 4522 freq); 4523 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4524 return; 4525 } 4526 } 4527 4528 if (join < 0) 4529 join = 0; 4530 4531 wpa_s->p2p_auto_pd = 0; 4532 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4533 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4534 MAC2STR(wpa_s->pending_join_dev_addr), join); 4535 if (p2p_prov_disc_req(wpa_s->global->p2p, 4536 wpa_s->pending_join_dev_addr, NULL, 4537 wpa_s->pending_pd_config_methods, join, 4538 0, wpa_s->user_initiated_pd) < 0) { 4539 wpa_s->p2p_auto_pd = 0; 4540 wpa_msg_global(wpa_s, MSG_INFO, 4541 P2P_EVENT_PROV_DISC_FAILURE 4542 " p2p_dev_addr=" MACSTR " status=N/A", 4543 MAC2STR(wpa_s->pending_join_dev_addr)); 4544 } 4545 return; 4546 } 4547 4548 if (wpa_s->p2p_auto_join) { 4549 int join = wpas_p2p_peer_go(wpa_s, 4550 wpa_s->pending_join_dev_addr); 4551 if (join < 0) { 4552 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4553 "running a GO -> use GO Negotiation"); 4554 wpa_msg_global(wpa_s->parent, MSG_INFO, 4555 P2P_EVENT_FALLBACK_TO_GO_NEG 4556 "reason=peer-not-running-GO"); 4557 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4558 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4559 wpa_s->p2p_persistent_group, 0, 0, 0, 4560 wpa_s->p2p_go_intent, 4561 wpa_s->p2p_connect_freq, 4562 wpa_s->p2p_persistent_id, 4563 wpa_s->p2p_pd_before_go_neg, 4564 wpa_s->p2p_go_ht40, 4565 wpa_s->p2p_go_vht); 4566 return; 4567 } 4568 4569 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4570 "try to join the group", join ? "" : 4571 " in older scan"); 4572 if (!join) { 4573 wpa_msg_global(wpa_s->parent, MSG_INFO, 4574 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4575 wpa_s->p2p_fallback_to_go_neg = 1; 4576 } 4577 } 4578 4579 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4580 wpa_s->pending_join_iface_addr); 4581 if (freq < 0 && 4582 p2p_get_interface_addr(wpa_s->global->p2p, 4583 wpa_s->pending_join_dev_addr, 4584 iface_addr) == 0 && 4585 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4586 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4587 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4588 "address for join from " MACSTR " to " MACSTR 4589 " based on newly discovered P2P peer entry", 4590 MAC2STR(wpa_s->pending_join_iface_addr), 4591 MAC2STR(iface_addr)); 4592 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4593 ETH_ALEN); 4594 4595 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4596 wpa_s->pending_join_iface_addr); 4597 } 4598 if (freq >= 0) { 4599 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4600 "from P2P peer table: %d MHz", freq); 4601 } 4602 if (wpa_s->p2p_join_ssid_len) { 4603 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4604 MACSTR " and SSID %s", 4605 MAC2STR(wpa_s->pending_join_iface_addr), 4606 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4607 wpa_s->p2p_join_ssid_len)); 4608 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4609 wpa_s->p2p_join_ssid, 4610 wpa_s->p2p_join_ssid_len); 4611 } 4612 if (!bss) { 4613 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4614 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4615 bss = wpa_bss_get_bssid_latest(wpa_s, 4616 wpa_s->pending_join_iface_addr); 4617 } 4618 if (bss) { 4619 u8 dev_addr[ETH_ALEN]; 4620 4621 freq = bss->freq; 4622 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4623 "from BSS table: %d MHz (SSID %s)", freq, 4624 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4625 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 4626 dev_addr) == 0 && 4627 os_memcmp(wpa_s->pending_join_dev_addr, 4628 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 4629 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 4630 ETH_ALEN) != 0) { 4631 wpa_printf(MSG_DEBUG, 4632 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 4633 MAC2STR(dev_addr), 4634 MAC2STR(wpa_s->pending_join_dev_addr)); 4635 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 4636 ETH_ALEN); 4637 } 4638 } 4639 if (freq > 0) { 4640 u16 method; 4641 4642 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4643 wpa_msg_global(wpa_s->parent, MSG_INFO, 4644 P2P_EVENT_GROUP_FORMATION_FAILURE 4645 "reason=FREQ_CONFLICT"); 4646 wpas_notify_p2p_group_formation_failure( 4647 wpa_s, "FREQ_CONFLICT"); 4648 return; 4649 } 4650 4651 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4652 "prior to joining an existing group (GO " MACSTR 4653 " freq=%u MHz)", 4654 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4655 wpa_s->pending_pd_before_join = 1; 4656 4657 switch (wpa_s->pending_join_wps_method) { 4658 case WPS_PIN_DISPLAY: 4659 method = WPS_CONFIG_KEYPAD; 4660 break; 4661 case WPS_PIN_KEYPAD: 4662 method = WPS_CONFIG_DISPLAY; 4663 break; 4664 case WPS_PBC: 4665 method = WPS_CONFIG_PUSHBUTTON; 4666 break; 4667 case WPS_P2PS: 4668 method = WPS_CONFIG_P2PS; 4669 break; 4670 default: 4671 method = 0; 4672 break; 4673 } 4674 4675 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4676 wpa_s->pending_join_dev_addr) == 4677 method)) { 4678 /* 4679 * We have already performed provision discovery for 4680 * joining the group. Proceed directly to join 4681 * operation without duplicated provision discovery. */ 4682 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4683 "with " MACSTR " already done - proceed to " 4684 "join", 4685 MAC2STR(wpa_s->pending_join_dev_addr)); 4686 wpa_s->pending_pd_before_join = 0; 4687 goto start; 4688 } 4689 4690 if (p2p_prov_disc_req(wpa_s->global->p2p, 4691 wpa_s->pending_join_dev_addr, 4692 NULL, method, 1, 4693 freq, wpa_s->user_initiated_pd) < 0) { 4694 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4695 "Discovery Request before joining an " 4696 "existing group"); 4697 wpa_s->pending_pd_before_join = 0; 4698 goto start; 4699 } 4700 return; 4701 } 4702 4703 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4704 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4705 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4706 wpas_p2p_check_join_scan_limit(wpa_s); 4707 return; 4708 4709 start: 4710 /* Start join operation immediately */ 4711 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 4712 } 4713 4714 4715 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4716 const u8 *ssid, size_t ssid_len) 4717 { 4718 int ret; 4719 struct wpa_driver_scan_params params; 4720 struct wpabuf *wps_ie, *ies; 4721 size_t ielen; 4722 int freqs[2] = { 0, 0 }; 4723 4724 os_memset(¶ms, 0, sizeof(params)); 4725 4726 /* P2P Wildcard SSID */ 4727 params.num_ssids = 1; 4728 if (ssid && ssid_len) { 4729 params.ssids[0].ssid = ssid; 4730 params.ssids[0].ssid_len = ssid_len; 4731 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4732 wpa_s->p2p_join_ssid_len = ssid_len; 4733 } else { 4734 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4735 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4736 wpa_s->p2p_join_ssid_len = 0; 4737 } 4738 4739 wpa_s->wps->dev.p2p = 1; 4740 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4741 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4742 NULL); 4743 if (wps_ie == NULL) { 4744 wpas_p2p_scan_res_join(wpa_s, NULL); 4745 return; 4746 } 4747 4748 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 4749 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 4750 if (ies == NULL) { 4751 wpabuf_free(wps_ie); 4752 wpas_p2p_scan_res_join(wpa_s, NULL); 4753 return; 4754 } 4755 wpabuf_put_buf(ies, wps_ie); 4756 wpabuf_free(wps_ie); 4757 4758 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4759 4760 params.p2p_probe = 1; 4761 params.extra_ies = wpabuf_head(ies); 4762 params.extra_ies_len = wpabuf_len(ies); 4763 4764 if (!freq) { 4765 int oper_freq; 4766 /* 4767 * If freq is not provided, check the operating freq of the GO 4768 * and use a single channel scan on if possible. 4769 */ 4770 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 4771 wpa_s->pending_join_iface_addr); 4772 if (oper_freq > 0) 4773 freq = oper_freq; 4774 } 4775 if (freq > 0) { 4776 freqs[0] = freq; 4777 params.freqs = freqs; 4778 } 4779 4780 /* 4781 * Run a scan to update BSS table and start Provision Discovery once 4782 * the new scan results become available. 4783 */ 4784 ret = wpa_drv_scan(wpa_s, ¶ms); 4785 if (!ret) { 4786 os_get_reltime(&wpa_s->scan_trigger_time); 4787 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 4788 wpa_s->own_scan_requested = 1; 4789 } 4790 4791 wpabuf_free(ies); 4792 4793 if (ret) { 4794 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 4795 "try again later"); 4796 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4797 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4798 wpas_p2p_check_join_scan_limit(wpa_s); 4799 } 4800 } 4801 4802 4803 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 4804 { 4805 struct wpa_supplicant *wpa_s = eloop_ctx; 4806 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 4807 } 4808 4809 4810 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 4811 const u8 *dev_addr, enum p2p_wps_method wps_method, 4812 int auto_join, int op_freq, 4813 const u8 *ssid, size_t ssid_len) 4814 { 4815 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 4816 MACSTR " dev " MACSTR " op_freq=%d)%s", 4817 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 4818 auto_join ? " (auto_join)" : ""); 4819 if (ssid && ssid_len) { 4820 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 4821 wpa_ssid_txt(ssid, ssid_len)); 4822 } 4823 4824 wpa_s->p2p_auto_pd = 0; 4825 wpa_s->p2p_auto_join = !!auto_join; 4826 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 4827 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 4828 wpa_s->pending_join_wps_method = wps_method; 4829 4830 /* Make sure we are not running find during connection establishment */ 4831 wpas_p2p_stop_find(wpa_s); 4832 4833 wpa_s->p2p_join_scan_count = 0; 4834 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 4835 return 0; 4836 } 4837 4838 4839 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 4840 const u8 *ssid, size_t ssid_len) 4841 { 4842 struct wpa_supplicant *group; 4843 struct p2p_go_neg_results res; 4844 struct wpa_bss *bss; 4845 4846 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 4847 if (group == NULL) 4848 return -1; 4849 if (group != wpa_s) { 4850 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 4851 sizeof(group->p2p_pin)); 4852 group->p2p_wps_method = wpa_s->p2p_wps_method; 4853 } else { 4854 /* 4855 * Need to mark the current interface for p2p_group_formation 4856 * when a separate group interface is not used. This is needed 4857 * to allow p2p_cancel stop a pending p2p_connect-join. 4858 * wpas_p2p_init_group_interface() addresses this for the case 4859 * where a separate group interface is used. 4860 */ 4861 wpa_s->global->p2p_group_formation = wpa_s; 4862 } 4863 4864 group->p2p_in_provisioning = 1; 4865 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 4866 4867 os_memset(&res, 0, sizeof(res)); 4868 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 4869 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 4870 ETH_ALEN); 4871 res.wps_method = wpa_s->pending_join_wps_method; 4872 if (freq && ssid && ssid_len) { 4873 res.freq = freq; 4874 res.ssid_len = ssid_len; 4875 os_memcpy(res.ssid, ssid, ssid_len); 4876 } else { 4877 bss = wpa_bss_get_bssid_latest(wpa_s, 4878 wpa_s->pending_join_iface_addr); 4879 if (bss) { 4880 res.freq = bss->freq; 4881 res.ssid_len = bss->ssid_len; 4882 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 4883 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 4884 bss->freq, 4885 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4886 } 4887 } 4888 4889 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 4890 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 4891 "starting client"); 4892 wpa_drv_cancel_remain_on_channel(wpa_s); 4893 wpa_s->off_channel_freq = 0; 4894 wpa_s->roc_waiting_drv_freq = 0; 4895 } 4896 wpas_start_wps_enrollee(group, &res); 4897 4898 /* 4899 * Allow a longer timeout for join-a-running-group than normal 15 4900 * second group formation timeout since the GO may not have authorized 4901 * our connection yet. 4902 */ 4903 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4904 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 4905 wpa_s, NULL); 4906 4907 return 0; 4908 } 4909 4910 4911 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 4912 int *force_freq, int *pref_freq, int go, 4913 unsigned int *pref_freq_list, 4914 unsigned int *num_pref_freq) 4915 { 4916 struct wpa_used_freq_data *freqs; 4917 int res, best_freq, num_unused; 4918 unsigned int freq_in_use = 0, num, i, max_pref_freq; 4919 4920 max_pref_freq = *num_pref_freq; 4921 *num_pref_freq = 0; 4922 4923 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4924 sizeof(struct wpa_used_freq_data)); 4925 if (!freqs) 4926 return -1; 4927 4928 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4929 wpa_s->num_multichan_concurrent); 4930 4931 /* 4932 * It is possible that the total number of used frequencies is bigger 4933 * than the number of frequencies used for P2P, so get the system wide 4934 * number of unused frequencies. 4935 */ 4936 num_unused = wpas_p2p_num_unused_channels(wpa_s); 4937 4938 wpa_printf(MSG_DEBUG, 4939 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 4940 freq, wpa_s->num_multichan_concurrent, num, num_unused); 4941 4942 if (freq > 0) { 4943 int ret; 4944 if (go) 4945 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 4946 else 4947 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 4948 if (!ret) { 4949 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 4950 ieee80211_is_dfs(freq)) { 4951 /* 4952 * If freq is a DFS channel and DFS is offloaded 4953 * to the driver, allow P2P GO to use it. 4954 */ 4955 wpa_printf(MSG_DEBUG, 4956 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 4957 freq); 4958 } else { 4959 wpa_printf(MSG_DEBUG, 4960 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 4961 freq); 4962 res = -3; 4963 goto exit_free; 4964 } 4965 } 4966 4967 for (i = 0; i < num; i++) { 4968 if (freqs[i].freq == freq) 4969 freq_in_use = 1; 4970 } 4971 4972 if (num_unused <= 0 && !freq_in_use) { 4973 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 4974 freq); 4975 res = -2; 4976 goto exit_free; 4977 } 4978 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 4979 "requested channel (%u MHz)", freq); 4980 *force_freq = freq; 4981 goto exit_ok; 4982 } 4983 4984 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 4985 4986 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 4987 enum wpa_driver_if_type iface_type; 4988 4989 if (go) 4990 iface_type = WPA_IF_P2P_GO; 4991 else 4992 iface_type = WPA_IF_P2P_CLIENT; 4993 4994 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 4995 best_freq, go); 4996 4997 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 4998 &max_pref_freq, 4999 pref_freq_list); 5000 if (!res && max_pref_freq > 0) { 5001 *num_pref_freq = max_pref_freq; 5002 i = 0; 5003 while (wpas_p2p_disallowed_freq(wpa_s->global, 5004 pref_freq_list[i]) && 5005 i < *num_pref_freq) { 5006 wpa_printf(MSG_DEBUG, 5007 "P2P: preferred_freq_list[%d]=%d is disallowed", 5008 i, pref_freq_list[i]); 5009 i++; 5010 } 5011 if (i != *num_pref_freq) { 5012 best_freq = pref_freq_list[i]; 5013 wpa_printf(MSG_DEBUG, 5014 "P2P: Using preferred_freq_list[%d]=%d", 5015 i, best_freq); 5016 } else { 5017 wpa_printf(MSG_DEBUG, 5018 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5019 *num_pref_freq = 0; 5020 } 5021 } else { 5022 wpa_printf(MSG_DEBUG, 5023 "P2P: No preferred frequency list available"); 5024 } 5025 } 5026 5027 /* We have a candidate frequency to use */ 5028 if (best_freq > 0) { 5029 if (*pref_freq == 0 && num_unused > 0) { 5030 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5031 best_freq); 5032 *pref_freq = best_freq; 5033 } else { 5034 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5035 best_freq); 5036 *force_freq = best_freq; 5037 } 5038 } else if (num_unused > 0) { 5039 wpa_printf(MSG_DEBUG, 5040 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5041 *force_freq = 0; 5042 } else { 5043 wpa_printf(MSG_DEBUG, 5044 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5045 res = -2; 5046 goto exit_free; 5047 } 5048 5049 exit_ok: 5050 res = 0; 5051 exit_free: 5052 os_free(freqs); 5053 return res; 5054 } 5055 5056 5057 /** 5058 * wpas_p2p_connect - Request P2P Group Formation to be started 5059 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5060 * @peer_addr: Address of the peer P2P Device 5061 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5062 * @persistent_group: Whether to create a persistent group 5063 * @auto_join: Whether to select join vs. GO Negotiation automatically 5064 * @join: Whether to join an existing group (as a client) instead of starting 5065 * Group Owner negotiation; @peer_addr is BSSID in that case 5066 * @auth: Whether to only authorize the connection instead of doing that and 5067 * initiating Group Owner negotiation 5068 * @go_intent: GO Intent or -1 to use default 5069 * @freq: Frequency for the group or 0 for auto-selection 5070 * @persistent_id: Persistent group credentials to use for forcing GO 5071 * parameters or -1 to generate new values (SSID/passphrase) 5072 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5073 * interoperability workaround when initiating group formation 5074 * @ht40: Start GO with 40 MHz channel width 5075 * @vht: Start GO with VHT support 5076 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5077 * failure, -2 on failure due to channel not currently available, 5078 * -3 if forced channel is not supported 5079 */ 5080 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5081 const char *pin, enum p2p_wps_method wps_method, 5082 int persistent_group, int auto_join, int join, int auth, 5083 int go_intent, int freq, int persistent_id, int pd, 5084 int ht40, int vht) 5085 { 5086 int force_freq = 0, pref_freq = 0; 5087 int ret = 0, res; 5088 enum wpa_driver_if_type iftype; 5089 const u8 *if_addr; 5090 struct wpa_ssid *ssid = NULL; 5091 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5092 5093 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5094 return -1; 5095 5096 if (persistent_id >= 0) { 5097 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5098 if (ssid == NULL || ssid->disabled != 2 || 5099 ssid->mode != WPAS_MODE_P2P_GO) 5100 return -1; 5101 } 5102 5103 os_free(wpa_s->global->add_psk); 5104 wpa_s->global->add_psk = NULL; 5105 5106 wpa_s->global->p2p_fail_on_wps_complete = 0; 5107 wpa_s->global->pending_p2ps_group = 0; 5108 wpa_s->p2ps_method_config_any = 0; 5109 5110 if (go_intent < 0) 5111 go_intent = wpa_s->conf->p2p_go_intent; 5112 5113 if (!auth) 5114 wpa_s->p2p_long_listen = 0; 5115 5116 wpa_s->p2p_wps_method = wps_method; 5117 wpa_s->p2p_persistent_group = !!persistent_group; 5118 wpa_s->p2p_persistent_id = persistent_id; 5119 wpa_s->p2p_go_intent = go_intent; 5120 wpa_s->p2p_connect_freq = freq; 5121 wpa_s->p2p_fallback_to_go_neg = 0; 5122 wpa_s->p2p_pd_before_go_neg = !!pd; 5123 wpa_s->p2p_go_ht40 = !!ht40; 5124 wpa_s->p2p_go_vht = !!vht; 5125 5126 if (pin) 5127 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5128 else if (wps_method == WPS_PIN_DISPLAY) { 5129 ret = wps_generate_pin(); 5130 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5131 "%08d", ret); 5132 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5133 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5134 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5135 wpa_s->p2p_pin); 5136 } else 5137 wpa_s->p2p_pin[0] = '\0'; 5138 5139 if (join || auto_join) { 5140 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5141 if (auth) { 5142 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5143 "connect a running group from " MACSTR, 5144 MAC2STR(peer_addr)); 5145 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5146 return ret; 5147 } 5148 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5149 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5150 iface_addr) < 0) { 5151 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5152 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5153 dev_addr); 5154 } 5155 if (auto_join) { 5156 os_get_reltime(&wpa_s->p2p_auto_started); 5157 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5158 "%ld.%06ld", 5159 wpa_s->p2p_auto_started.sec, 5160 wpa_s->p2p_auto_started.usec); 5161 } 5162 wpa_s->user_initiated_pd = 1; 5163 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5164 auto_join, freq, NULL, 0) < 0) 5165 return -1; 5166 return ret; 5167 } 5168 5169 size = P2P_MAX_PREF_CHANNELS; 5170 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5171 go_intent == 15, pref_freq_list, &size); 5172 if (res) 5173 return res; 5174 wpas_p2p_set_own_freq_preference(wpa_s, 5175 force_freq ? force_freq : pref_freq); 5176 5177 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5178 5179 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5180 5181 if (wpa_s->create_p2p_iface) { 5182 /* Prepare to add a new interface for the group */ 5183 iftype = WPA_IF_P2P_GROUP; 5184 if (go_intent == 15) 5185 iftype = WPA_IF_P2P_GO; 5186 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5187 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5188 "interface for the group"); 5189 return -1; 5190 } 5191 5192 if_addr = wpa_s->pending_interface_addr; 5193 } else { 5194 if_addr = wpa_s->own_addr; 5195 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5196 } 5197 5198 if (auth) { 5199 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5200 go_intent, if_addr, 5201 force_freq, persistent_group, ssid, 5202 pref_freq) < 0) 5203 return -1; 5204 return ret; 5205 } 5206 5207 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5208 go_intent, if_addr, force_freq, 5209 persistent_group, ssid, pref_freq) < 0) { 5210 if (wpa_s->create_p2p_iface) 5211 wpas_p2p_remove_pending_group_interface(wpa_s); 5212 return -1; 5213 } 5214 return ret; 5215 } 5216 5217 5218 /** 5219 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5220 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5221 * @freq: Frequency of the channel in MHz 5222 * @duration: Duration of the stay on the channel in milliseconds 5223 * 5224 * This callback is called when the driver indicates that it has started the 5225 * requested remain-on-channel duration. 5226 */ 5227 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5228 unsigned int freq, unsigned int duration) 5229 { 5230 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5231 return; 5232 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)", 5233 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5234 wpa_s->roc_waiting_drv_freq, freq, duration); 5235 if (wpa_s->off_channel_freq && 5236 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5237 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5238 wpa_s->pending_listen_duration); 5239 wpa_s->pending_listen_freq = 0; 5240 } else { 5241 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5242 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5243 freq, duration); 5244 } 5245 } 5246 5247 5248 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5249 { 5250 /* Limit maximum Listen state time based on driver limitation. */ 5251 if (timeout > wpa_s->max_remain_on_chan) 5252 timeout = wpa_s->max_remain_on_chan; 5253 5254 return p2p_listen(wpa_s->global->p2p, timeout); 5255 } 5256 5257 5258 /** 5259 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5260 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5261 * @freq: Frequency of the channel in MHz 5262 * 5263 * This callback is called when the driver indicates that a remain-on-channel 5264 * operation has been completed, i.e., the duration on the requested channel 5265 * has timed out. 5266 */ 5267 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5268 unsigned int freq) 5269 { 5270 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5271 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5272 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5273 wpas_p2p_listen_work_done(wpa_s); 5274 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5275 return; 5276 if (wpa_s->p2p_long_listen > 0) 5277 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5278 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5279 return; /* P2P module started a new operation */ 5280 if (offchannel_pending_action_tx(wpa_s)) 5281 return; 5282 if (wpa_s->p2p_long_listen > 0) { 5283 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5284 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5285 } else { 5286 /* 5287 * When listen duration is over, stop listen & update p2p_state 5288 * to IDLE. 5289 */ 5290 p2p_stop_listen(wpa_s->global->p2p); 5291 } 5292 } 5293 5294 5295 /** 5296 * wpas_p2p_group_remove - Remove a P2P group 5297 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5298 * @ifname: Network interface name of the group interface or "*" to remove all 5299 * groups 5300 * Returns: 0 on success, -1 on failure 5301 * 5302 * This function is used to remove a P2P group. This can be used to disconnect 5303 * from a group in which the local end is a P2P Client or to end a P2P Group in 5304 * case the local end is the Group Owner. If a virtual network interface was 5305 * created for this group, that interface will be removed. Otherwise, only the 5306 * configured P2P group network will be removed from the interface. 5307 */ 5308 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5309 { 5310 struct wpa_global *global = wpa_s->global; 5311 struct wpa_supplicant *calling_wpa_s = wpa_s; 5312 5313 if (os_strcmp(ifname, "*") == 0) { 5314 struct wpa_supplicant *prev; 5315 wpa_s = global->ifaces; 5316 while (wpa_s) { 5317 prev = wpa_s; 5318 wpa_s = wpa_s->next; 5319 if (prev->p2p_group_interface != 5320 NOT_P2P_GROUP_INTERFACE || 5321 (prev->current_ssid && 5322 prev->current_ssid->p2p_group)) 5323 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5324 } 5325 return 0; 5326 } 5327 5328 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5329 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5330 break; 5331 } 5332 5333 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5334 } 5335 5336 5337 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5338 { 5339 unsigned int r; 5340 5341 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5342 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5343 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5344 int res; 5345 5346 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5347 &size, pref_freq_list); 5348 if (!res && size > 0) { 5349 i = 0; 5350 while (wpas_p2p_disallowed_freq(wpa_s->global, 5351 pref_freq_list[i]) && 5352 i < size) { 5353 wpa_printf(MSG_DEBUG, 5354 "P2P: preferred_freq_list[%d]=%d is disallowed", 5355 i, pref_freq_list[i]); 5356 i++; 5357 } 5358 if (i != size) { 5359 freq = pref_freq_list[i]; 5360 wpa_printf(MSG_DEBUG, 5361 "P2P: Using preferred_freq_list[%d]=%d", 5362 i, freq); 5363 } else { 5364 wpa_printf(MSG_DEBUG, 5365 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5366 } 5367 } else { 5368 wpa_printf(MSG_DEBUG, 5369 "P2P: No preferred frequency list available"); 5370 } 5371 } 5372 5373 if (freq == 2) { 5374 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5375 "band"); 5376 if (wpa_s->best_24_freq > 0 && 5377 p2p_supported_freq_go(wpa_s->global->p2p, 5378 wpa_s->best_24_freq)) { 5379 freq = wpa_s->best_24_freq; 5380 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5381 "channel: %d MHz", freq); 5382 } else { 5383 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5384 return -1; 5385 freq = 2412 + (r % 3) * 25; 5386 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5387 "channel: %d MHz", freq); 5388 } 5389 } 5390 5391 if (freq == 5) { 5392 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5393 "band"); 5394 if (wpa_s->best_5_freq > 0 && 5395 p2p_supported_freq_go(wpa_s->global->p2p, 5396 wpa_s->best_5_freq)) { 5397 freq = wpa_s->best_5_freq; 5398 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5399 "channel: %d MHz", freq); 5400 } else { 5401 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5402 return -1; 5403 freq = 5180 + (r % 4) * 20; 5404 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5405 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5406 "5 GHz channel for P2P group"); 5407 return -1; 5408 } 5409 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5410 "channel: %d MHz", freq); 5411 } 5412 } 5413 5414 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5415 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5416 ieee80211_is_dfs(freq)) { 5417 /* 5418 * If freq is a DFS channel and DFS is offloaded to the 5419 * driver, allow P2P GO to use it. 5420 */ 5421 wpa_printf(MSG_DEBUG, "P2P: " 5422 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5423 __func__, freq); 5424 return freq; 5425 } 5426 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5427 "(%u MHz) is not supported for P2P uses", 5428 freq); 5429 return -1; 5430 } 5431 5432 return freq; 5433 } 5434 5435 5436 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5437 const struct p2p_channels *channels, 5438 int freq) 5439 { 5440 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5441 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5442 freq_included(wpa_s, channels, freq)) 5443 return 1; 5444 return 0; 5445 } 5446 5447 5448 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5449 struct p2p_go_neg_results *params, 5450 const struct p2p_channels *channels) 5451 { 5452 unsigned int i, r; 5453 5454 /* first try some random selection of the social channels */ 5455 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5456 return; 5457 5458 for (i = 0; i < 3; i++) { 5459 params->freq = 2412 + ((r + i) % 3) * 25; 5460 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5461 goto out; 5462 } 5463 5464 /* try all other channels in operating class 81 */ 5465 for (i = 0; i < 11; i++) { 5466 params->freq = 2412 + i * 5; 5467 5468 /* skip social channels; covered in the previous loop */ 5469 if (params->freq == 2412 || 5470 params->freq == 2437 || 5471 params->freq == 2462) 5472 continue; 5473 5474 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5475 goto out; 5476 } 5477 5478 /* try all channels in operating class 115 */ 5479 for (i = 0; i < 4; i++) { 5480 params->freq = 5180 + i * 20; 5481 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5482 freq_included(wpa_s, channels, params->freq) && 5483 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5484 goto out; 5485 } 5486 5487 /* try all channels in operating class 124 */ 5488 for (i = 0; i < 4; i++) { 5489 params->freq = 5745 + i * 20; 5490 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5491 freq_included(wpa_s, channels, params->freq) && 5492 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5493 goto out; 5494 } 5495 5496 /* try social channel class 180 channel 2 */ 5497 params->freq = 58320 + 1 * 2160; 5498 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5499 freq_included(wpa_s, channels, params->freq) && 5500 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5501 goto out; 5502 5503 /* try all channels in reg. class 180 */ 5504 for (i = 0; i < 4; i++) { 5505 params->freq = 58320 + i * 2160; 5506 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5507 freq_included(wpa_s, channels, params->freq) && 5508 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5509 goto out; 5510 } 5511 5512 params->freq = 0; 5513 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5514 return; 5515 out: 5516 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5517 params->freq); 5518 } 5519 5520 5521 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5522 struct p2p_go_neg_results *params, 5523 int freq, int ht40, int vht, 5524 const struct p2p_channels *channels) 5525 { 5526 struct wpa_used_freq_data *freqs; 5527 unsigned int cand; 5528 unsigned int num, i; 5529 5530 os_memset(params, 0, sizeof(*params)); 5531 params->role_go = 1; 5532 params->ht40 = ht40; 5533 params->vht = vht; 5534 5535 if (wpa_s->p2p_group_common_freqs_num) 5536 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5537 __func__); 5538 5539 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5540 sizeof(struct wpa_used_freq_data)); 5541 if (!freqs) 5542 return -1; 5543 5544 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5545 wpa_s->num_multichan_concurrent); 5546 5547 /* try using the forced freq */ 5548 if (freq) { 5549 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) { 5550 wpa_printf(MSG_DEBUG, 5551 "P2P: Forced GO freq %d MHz not accepted", 5552 freq); 5553 goto fail; 5554 } 5555 5556 for (i = 0; i < num; i++) { 5557 if (freqs[i].freq == freq) { 5558 wpa_printf(MSG_DEBUG, 5559 "P2P: forced freq (%d MHz) is also shared", 5560 freq); 5561 params->freq = freq; 5562 goto success; 5563 } 5564 } 5565 5566 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) { 5567 wpa_printf(MSG_DEBUG, 5568 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 5569 freq); 5570 goto fail; 5571 } 5572 5573 wpa_printf(MSG_DEBUG, 5574 "P2P: force GO freq (%d MHz) on a free channel", 5575 freq); 5576 params->freq = freq; 5577 goto success; 5578 } 5579 5580 /* consider using one of the shared frequencies */ 5581 if (num) { 5582 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5583 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5584 wpa_printf(MSG_DEBUG, 5585 "P2P: Use shared freq (%d MHz) for GO", 5586 freq); 5587 params->freq = cand; 5588 goto success; 5589 } 5590 5591 /* try using one of the shared freqs */ 5592 for (i = 0; i < num; i++) { 5593 if (wpas_p2p_supported_freq_go(wpa_s, channels, 5594 freqs[i].freq)) { 5595 wpa_printf(MSG_DEBUG, 5596 "P2P: Use shared freq (%d MHz) for GO", 5597 freq); 5598 params->freq = freqs[i].freq; 5599 goto success; 5600 } 5601 } 5602 } 5603 5604 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) { 5605 wpa_printf(MSG_DEBUG, 5606 "P2P: Cannot force GO on any of the channels we are already using"); 5607 goto fail; 5608 } 5609 5610 /* try using the setting from the configuration file */ 5611 if (wpa_s->conf->p2p_oper_reg_class == 81 && 5612 wpa_s->conf->p2p_oper_channel >= 1 && 5613 wpa_s->conf->p2p_oper_channel <= 11 && 5614 wpas_p2p_supported_freq_go( 5615 wpa_s, channels, 5616 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 5617 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 5618 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5619 "frequency %d MHz", params->freq); 5620 goto success; 5621 } 5622 5623 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 5624 wpa_s->conf->p2p_oper_reg_class == 116 || 5625 wpa_s->conf->p2p_oper_reg_class == 117 || 5626 wpa_s->conf->p2p_oper_reg_class == 124 || 5627 wpa_s->conf->p2p_oper_reg_class == 125 || 5628 wpa_s->conf->p2p_oper_reg_class == 126 || 5629 wpa_s->conf->p2p_oper_reg_class == 127) && 5630 wpas_p2p_supported_freq_go(wpa_s, channels, 5631 5000 + 5632 5 * wpa_s->conf->p2p_oper_channel)) { 5633 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 5634 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5635 "frequency %d MHz", params->freq); 5636 goto success; 5637 } 5638 5639 /* Try using best channels */ 5640 if (wpa_s->conf->p2p_oper_channel == 0 && 5641 wpa_s->best_overall_freq > 0 && 5642 wpas_p2p_supported_freq_go(wpa_s, channels, 5643 wpa_s->best_overall_freq)) { 5644 params->freq = wpa_s->best_overall_freq; 5645 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5646 "channel %d MHz", params->freq); 5647 goto success; 5648 } 5649 5650 if (wpa_s->conf->p2p_oper_channel == 0 && 5651 wpa_s->best_24_freq > 0 && 5652 wpas_p2p_supported_freq_go(wpa_s, channels, 5653 wpa_s->best_24_freq)) { 5654 params->freq = wpa_s->best_24_freq; 5655 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 5656 "channel %d MHz", params->freq); 5657 goto success; 5658 } 5659 5660 if (wpa_s->conf->p2p_oper_channel == 0 && 5661 wpa_s->best_5_freq > 0 && 5662 wpas_p2p_supported_freq_go(wpa_s, channels, 5663 wpa_s->best_5_freq)) { 5664 params->freq = wpa_s->best_5_freq; 5665 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 5666 "channel %d MHz", params->freq); 5667 goto success; 5668 } 5669 5670 /* try using preferred channels */ 5671 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 5672 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5673 params->freq = cand; 5674 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 5675 "channels", params->freq); 5676 goto success; 5677 } 5678 5679 /* Try using one of the group common freqs */ 5680 if (wpa_s->p2p_group_common_freqs) { 5681 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 5682 cand = wpa_s->p2p_group_common_freqs[i]; 5683 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5684 params->freq = cand; 5685 wpa_printf(MSG_DEBUG, 5686 "P2P: Use freq %d MHz common with the peer", 5687 params->freq); 5688 goto success; 5689 } 5690 } 5691 } 5692 5693 /* no preference, select some channel */ 5694 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 5695 5696 if (params->freq == 0) { 5697 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 5698 goto fail; 5699 } 5700 5701 success: 5702 os_free(freqs); 5703 return 0; 5704 fail: 5705 os_free(freqs); 5706 return -1; 5707 } 5708 5709 5710 static struct wpa_supplicant * 5711 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 5712 int go) 5713 { 5714 struct wpa_supplicant *group_wpa_s; 5715 5716 if (!wpas_p2p_create_iface(wpa_s)) { 5717 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 5718 "operations"); 5719 wpa_s->p2p_first_connection_timeout = 0; 5720 return wpa_s; 5721 } 5722 5723 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 5724 WPA_IF_P2P_CLIENT) < 0) { 5725 wpa_msg_global(wpa_s, MSG_ERROR, 5726 "P2P: Failed to add group interface"); 5727 return NULL; 5728 } 5729 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 5730 if (group_wpa_s == NULL) { 5731 wpa_msg_global(wpa_s, MSG_ERROR, 5732 "P2P: Failed to initialize group interface"); 5733 wpas_p2p_remove_pending_group_interface(wpa_s); 5734 return NULL; 5735 } 5736 5737 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 5738 group_wpa_s->ifname); 5739 group_wpa_s->p2p_first_connection_timeout = 0; 5740 return group_wpa_s; 5741 } 5742 5743 5744 /** 5745 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 5746 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5747 * @persistent_group: Whether to create a persistent group 5748 * @freq: Frequency for the group or 0 to indicate no hardcoding 5749 * @ht40: Start GO with 40 MHz channel width 5750 * @vht: Start GO with VHT support 5751 * Returns: 0 on success, -1 on failure 5752 * 5753 * This function creates a new P2P group with the local end as the Group Owner, 5754 * i.e., without using Group Owner Negotiation. 5755 */ 5756 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 5757 int freq, int ht40, int vht) 5758 { 5759 struct p2p_go_neg_results params; 5760 5761 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5762 return -1; 5763 5764 os_free(wpa_s->global->add_psk); 5765 wpa_s->global->add_psk = NULL; 5766 5767 /* Make sure we are not running find during connection establishment */ 5768 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 5769 wpas_p2p_stop_find_oper(wpa_s); 5770 5771 freq = wpas_p2p_select_go_freq(wpa_s, freq); 5772 if (freq < 0) 5773 return -1; 5774 5775 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, NULL)) 5776 return -1; 5777 if (params.freq && 5778 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 5779 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5780 ieee80211_is_dfs(params.freq)) { 5781 /* 5782 * If freq is a DFS channel and DFS is offloaded to the 5783 * driver, allow P2P GO to use it. 5784 */ 5785 wpa_printf(MSG_DEBUG, 5786 "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver", 5787 __func__, params.freq); 5788 } else { 5789 wpa_printf(MSG_DEBUG, 5790 "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses", 5791 params.freq); 5792 return -1; 5793 } 5794 } 5795 p2p_go_params(wpa_s->global->p2p, ¶ms); 5796 params.persistent_group = persistent_group; 5797 5798 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 5799 if (wpa_s == NULL) 5800 return -1; 5801 wpas_start_wps_go(wpa_s, ¶ms, 0); 5802 5803 return 0; 5804 } 5805 5806 5807 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 5808 struct wpa_ssid *params, int addr_allocated, 5809 int freq, int force_scan) 5810 { 5811 struct wpa_ssid *ssid; 5812 5813 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 5814 if (wpa_s == NULL) 5815 return -1; 5816 if (force_scan) 5817 os_get_reltime(&wpa_s->scan_min_time); 5818 wpa_s->p2p_last_4way_hs_fail = NULL; 5819 5820 wpa_supplicant_ap_deinit(wpa_s); 5821 5822 ssid = wpa_config_add_network(wpa_s->conf); 5823 if (ssid == NULL) 5824 return -1; 5825 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5826 wpa_config_set_network_defaults(ssid); 5827 ssid->temporary = 1; 5828 ssid->proto = WPA_PROTO_RSN; 5829 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 5830 ssid->group_cipher = WPA_CIPHER_CCMP; 5831 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 5832 ssid->ssid = os_malloc(params->ssid_len); 5833 if (ssid->ssid == NULL) { 5834 wpa_config_remove_network(wpa_s->conf, ssid->id); 5835 return -1; 5836 } 5837 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 5838 ssid->ssid_len = params->ssid_len; 5839 ssid->p2p_group = 1; 5840 ssid->export_keys = 1; 5841 if (params->psk_set) { 5842 os_memcpy(ssid->psk, params->psk, 32); 5843 ssid->psk_set = 1; 5844 } 5845 if (params->passphrase) 5846 ssid->passphrase = os_strdup(params->passphrase); 5847 5848 wpa_s->show_group_started = 1; 5849 wpa_s->p2p_in_invitation = 1; 5850 wpa_s->p2p_invite_go_freq = freq; 5851 5852 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 5853 NULL); 5854 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 5855 wpas_p2p_group_formation_timeout, 5856 wpa_s->parent, NULL); 5857 wpa_supplicant_select_network(wpa_s, ssid); 5858 5859 return 0; 5860 } 5861 5862 5863 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 5864 struct wpa_ssid *ssid, int addr_allocated, 5865 int force_freq, int neg_freq, int ht40, 5866 int vht, const struct p2p_channels *channels, 5867 int connection_timeout, int force_scan) 5868 { 5869 struct p2p_go_neg_results params; 5870 int go = 0, freq; 5871 5872 if (ssid->disabled != 2 || ssid->ssid == NULL) 5873 return -1; 5874 5875 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 5876 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 5877 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 5878 "already running"); 5879 if (go == 0 && 5880 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5881 wpa_s->parent, NULL)) { 5882 /* 5883 * This can happen if Invitation Response frame was lost 5884 * and the peer (GO of a persistent group) tries to 5885 * invite us again. Reschedule the timeout to avoid 5886 * terminating the wait for the connection too early 5887 * since we now know that the peer is still trying to 5888 * invite us instead of having already started the GO. 5889 */ 5890 wpa_printf(MSG_DEBUG, 5891 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 5892 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 5893 wpas_p2p_group_formation_timeout, 5894 wpa_s->parent, NULL); 5895 } 5896 return 0; 5897 } 5898 5899 os_free(wpa_s->global->add_psk); 5900 wpa_s->global->add_psk = NULL; 5901 5902 /* Make sure we are not running find during connection establishment */ 5903 wpas_p2p_stop_find_oper(wpa_s); 5904 5905 wpa_s->p2p_fallback_to_go_neg = 0; 5906 5907 if (ssid->mode == WPAS_MODE_P2P_GO) { 5908 if (force_freq > 0) { 5909 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 5910 if (freq < 0) 5911 return -1; 5912 } else { 5913 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 5914 if (freq < 0 || 5915 (freq > 0 && !freq_included(wpa_s, channels, freq))) 5916 freq = 0; 5917 } 5918 } else if (ssid->mode == WPAS_MODE_INFRA) { 5919 freq = neg_freq; 5920 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 5921 struct os_reltime now; 5922 struct wpa_bss *bss = 5923 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 5924 5925 os_get_reltime(&now); 5926 if (bss && 5927 !os_reltime_expired(&now, &bss->last_update, 5) && 5928 freq_included(wpa_s, channels, bss->freq)) 5929 freq = bss->freq; 5930 else 5931 freq = 0; 5932 } 5933 5934 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 5935 force_scan); 5936 } else { 5937 return -1; 5938 } 5939 5940 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, channels)) 5941 return -1; 5942 5943 params.role_go = 1; 5944 params.psk_set = ssid->psk_set; 5945 if (params.psk_set) 5946 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 5947 if (ssid->passphrase) { 5948 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 5949 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 5950 "persistent group"); 5951 return -1; 5952 } 5953 os_strlcpy(params.passphrase, ssid->passphrase, 5954 sizeof(params.passphrase)); 5955 } 5956 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 5957 params.ssid_len = ssid->ssid_len; 5958 params.persistent_group = 1; 5959 5960 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 5961 if (wpa_s == NULL) 5962 return -1; 5963 5964 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 5965 5966 wpa_s->p2p_first_connection_timeout = connection_timeout; 5967 wpas_start_wps_go(wpa_s, ¶ms, 0); 5968 5969 return 0; 5970 } 5971 5972 5973 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 5974 struct wpabuf *proberesp_ies) 5975 { 5976 struct wpa_supplicant *wpa_s = ctx; 5977 if (wpa_s->ap_iface) { 5978 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 5979 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 5980 wpabuf_free(beacon_ies); 5981 wpabuf_free(proberesp_ies); 5982 return; 5983 } 5984 if (beacon_ies) { 5985 wpabuf_free(hapd->p2p_beacon_ie); 5986 hapd->p2p_beacon_ie = beacon_ies; 5987 } 5988 wpabuf_free(hapd->p2p_probe_resp_ie); 5989 hapd->p2p_probe_resp_ie = proberesp_ies; 5990 } else { 5991 wpabuf_free(beacon_ies); 5992 wpabuf_free(proberesp_ies); 5993 } 5994 wpa_supplicant_ap_update_beacon(wpa_s); 5995 } 5996 5997 5998 static void wpas_p2p_idle_update(void *ctx, int idle) 5999 { 6000 struct wpa_supplicant *wpa_s = ctx; 6001 if (!wpa_s->ap_iface) 6002 return; 6003 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6004 if (idle) { 6005 if (wpa_s->global->p2p_fail_on_wps_complete && 6006 wpa_s->p2p_in_provisioning) { 6007 wpas_p2p_grpform_fail_after_wps(wpa_s); 6008 return; 6009 } 6010 wpas_p2p_set_group_idle_timeout(wpa_s); 6011 } else 6012 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6013 } 6014 6015 6016 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6017 struct wpa_ssid *ssid) 6018 { 6019 struct p2p_group *group; 6020 struct p2p_group_config *cfg; 6021 6022 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6023 return NULL; 6024 6025 cfg = os_zalloc(sizeof(*cfg)); 6026 if (cfg == NULL) 6027 return NULL; 6028 6029 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6030 cfg->persistent_group = 2; 6031 else if (ssid->p2p_persistent_group) 6032 cfg->persistent_group = 1; 6033 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6034 if (wpa_s->max_stations && 6035 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6036 cfg->max_clients = wpa_s->max_stations; 6037 else 6038 cfg->max_clients = wpa_s->conf->max_num_sta; 6039 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6040 cfg->ssid_len = ssid->ssid_len; 6041 cfg->freq = ssid->frequency; 6042 cfg->cb_ctx = wpa_s; 6043 cfg->ie_update = wpas_p2p_ie_update; 6044 cfg->idle_update = wpas_p2p_idle_update; 6045 6046 group = p2p_group_init(wpa_s->global->p2p, cfg); 6047 if (group == NULL) 6048 os_free(cfg); 6049 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6050 p2p_group_notif_formation_done(group); 6051 wpa_s->p2p_group = group; 6052 return group; 6053 } 6054 6055 6056 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6057 int registrar) 6058 { 6059 struct wpa_ssid *ssid = wpa_s->current_ssid; 6060 6061 if (!wpa_s->p2p_in_provisioning) { 6062 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6063 "provisioning not in progress"); 6064 return; 6065 } 6066 6067 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6068 u8 go_dev_addr[ETH_ALEN]; 6069 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6070 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6071 ssid->ssid_len); 6072 /* Clear any stored provisioning info */ 6073 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6074 } 6075 6076 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 6077 NULL); 6078 wpa_s->p2p_go_group_formation_completed = 1; 6079 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6080 /* 6081 * Use a separate timeout for initial data connection to 6082 * complete to allow the group to be removed automatically if 6083 * something goes wrong in this step before the P2P group idle 6084 * timeout mechanism is taken into use. 6085 */ 6086 wpa_dbg(wpa_s, MSG_DEBUG, 6087 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6088 P2P_MAX_INITIAL_CONN_WAIT); 6089 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6090 wpas_p2p_group_formation_timeout, 6091 wpa_s->parent, NULL); 6092 } else if (ssid) { 6093 /* 6094 * Use a separate timeout for initial data connection to 6095 * complete to allow the group to be removed automatically if 6096 * the client does not complete data connection successfully. 6097 */ 6098 wpa_dbg(wpa_s, MSG_DEBUG, 6099 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6100 P2P_MAX_INITIAL_CONN_WAIT_GO); 6101 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6102 wpas_p2p_group_formation_timeout, 6103 wpa_s->parent, NULL); 6104 /* 6105 * Complete group formation on first successful data connection 6106 */ 6107 wpa_s->p2p_go_group_formation_completed = 0; 6108 } 6109 if (wpa_s->global->p2p) 6110 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6111 wpas_group_formation_completed(wpa_s, 1, 0); 6112 } 6113 6114 6115 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6116 struct wps_event_fail *fail) 6117 { 6118 if (!wpa_s->p2p_in_provisioning) { 6119 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6120 "provisioning not in progress"); 6121 return; 6122 } 6123 6124 if (wpa_s->go_params) { 6125 p2p_clear_provisioning_info( 6126 wpa_s->global->p2p, 6127 wpa_s->go_params->peer_device_addr); 6128 } 6129 6130 wpas_notify_p2p_wps_failed(wpa_s, fail); 6131 6132 if (wpa_s == wpa_s->global->p2p_group_formation) { 6133 /* 6134 * Allow some time for the failed WPS negotiation exchange to 6135 * complete, but remove the group since group formation cannot 6136 * succeed after provisioning failure. 6137 */ 6138 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6139 wpa_s->global->p2p_fail_on_wps_complete = 1; 6140 eloop_deplete_timeout(0, 50000, 6141 wpas_p2p_group_formation_timeout, 6142 wpa_s->parent, NULL); 6143 } 6144 } 6145 6146 6147 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6148 { 6149 if (!wpa_s->global->p2p_fail_on_wps_complete || 6150 !wpa_s->p2p_in_provisioning) 6151 return 0; 6152 6153 wpas_p2p_grpform_fail_after_wps(wpa_s); 6154 6155 return 1; 6156 } 6157 6158 6159 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6160 const char *config_method, 6161 enum wpas_p2p_prov_disc_use use, 6162 struct p2ps_provision *p2ps_prov) 6163 { 6164 u16 config_methods; 6165 6166 wpa_s->global->pending_p2ps_group = 0; 6167 wpa_s->p2p_fallback_to_go_neg = 0; 6168 wpa_s->pending_pd_use = NORMAL_PD; 6169 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6170 p2ps_prov->conncap = p2ps_group_capability( 6171 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role); 6172 wpa_printf(MSG_DEBUG, 6173 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6174 __func__, p2ps_prov->conncap, 6175 p2ps_prov->adv_id, p2ps_prov->conncap, 6176 p2ps_prov->status, p2ps_prov->info); 6177 6178 config_methods = 0; 6179 } else if (os_strncmp(config_method, "display", 7) == 0) 6180 config_methods = WPS_CONFIG_DISPLAY; 6181 else if (os_strncmp(config_method, "keypad", 6) == 0) 6182 config_methods = WPS_CONFIG_KEYPAD; 6183 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6184 os_strncmp(config_method, "pushbutton", 10) == 0) 6185 config_methods = WPS_CONFIG_PUSHBUTTON; 6186 else { 6187 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6188 os_free(p2ps_prov); 6189 return -1; 6190 } 6191 6192 if (use == WPAS_P2P_PD_AUTO) { 6193 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6194 wpa_s->pending_pd_config_methods = config_methods; 6195 wpa_s->p2p_auto_pd = 1; 6196 wpa_s->p2p_auto_join = 0; 6197 wpa_s->pending_pd_before_join = 0; 6198 wpa_s->auto_pd_scan_retry = 0; 6199 wpas_p2p_stop_find(wpa_s); 6200 wpa_s->p2p_join_scan_count = 0; 6201 os_get_reltime(&wpa_s->p2p_auto_started); 6202 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6203 wpa_s->p2p_auto_started.sec, 6204 wpa_s->p2p_auto_started.usec); 6205 wpas_p2p_join_scan(wpa_s, NULL); 6206 return 0; 6207 } 6208 6209 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6210 os_free(p2ps_prov); 6211 return -1; 6212 } 6213 6214 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6215 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6216 0, 1); 6217 } 6218 6219 6220 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6221 char *end) 6222 { 6223 return p2p_scan_result_text(ies, ies_len, buf, end); 6224 } 6225 6226 6227 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6228 { 6229 if (!offchannel_pending_action_tx(wpa_s)) 6230 return; 6231 6232 wpas_p2p_action_tx_clear(wpa_s); 6233 6234 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6235 "operation request"); 6236 offchannel_clear_pending_action_tx(wpa_s); 6237 } 6238 6239 6240 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6241 enum p2p_discovery_type type, 6242 unsigned int num_req_dev_types, const u8 *req_dev_types, 6243 const u8 *dev_id, unsigned int search_delay, 6244 u8 seek_cnt, const char **seek_string, int freq) 6245 { 6246 wpas_p2p_clear_pending_action_tx(wpa_s); 6247 wpa_s->p2p_long_listen = 0; 6248 6249 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6250 wpa_s->p2p_in_provisioning) 6251 return -1; 6252 6253 wpa_supplicant_cancel_sched_scan(wpa_s); 6254 6255 return p2p_find(wpa_s->global->p2p, timeout, type, 6256 num_req_dev_types, req_dev_types, dev_id, 6257 search_delay, seek_cnt, seek_string, freq); 6258 } 6259 6260 6261 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6262 struct wpa_scan_results *scan_res) 6263 { 6264 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6265 6266 if (wpa_s->p2p_scan_work) { 6267 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6268 wpa_s->p2p_scan_work = NULL; 6269 radio_work_done(work); 6270 } 6271 6272 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6273 return; 6274 6275 /* 6276 * Indicate that results have been processed so that the P2P module can 6277 * continue pending tasks. 6278 */ 6279 p2p_scan_res_handled(wpa_s->global->p2p); 6280 } 6281 6282 6283 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6284 { 6285 wpas_p2p_clear_pending_action_tx(wpa_s); 6286 wpa_s->p2p_long_listen = 0; 6287 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6288 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6289 6290 if (wpa_s->global->p2p) 6291 p2p_stop_find(wpa_s->global->p2p); 6292 6293 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6294 wpa_printf(MSG_DEBUG, 6295 "P2P: Do not consider the scan results after stop_find"); 6296 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6297 } 6298 } 6299 6300 6301 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6302 { 6303 wpas_p2p_stop_find_oper(wpa_s); 6304 if (!wpa_s->global->pending_group_iface_for_p2ps) 6305 wpas_p2p_remove_pending_group_interface(wpa_s); 6306 } 6307 6308 6309 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6310 { 6311 struct wpa_supplicant *wpa_s = eloop_ctx; 6312 wpa_s->p2p_long_listen = 0; 6313 } 6314 6315 6316 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6317 { 6318 int res; 6319 6320 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6321 return -1; 6322 6323 wpa_supplicant_cancel_sched_scan(wpa_s); 6324 wpas_p2p_clear_pending_action_tx(wpa_s); 6325 6326 if (timeout == 0) { 6327 /* 6328 * This is a request for unlimited Listen state. However, at 6329 * least for now, this is mapped to a Listen state for one 6330 * hour. 6331 */ 6332 timeout = 3600; 6333 } 6334 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6335 wpa_s->p2p_long_listen = 0; 6336 6337 /* 6338 * Stop previous find/listen operation to avoid trying to request a new 6339 * remain-on-channel operation while the driver is still running the 6340 * previous one. 6341 */ 6342 if (wpa_s->global->p2p) 6343 p2p_stop_find(wpa_s->global->p2p); 6344 6345 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6346 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6347 wpa_s->p2p_long_listen = timeout * 1000; 6348 eloop_register_timeout(timeout, 0, 6349 wpas_p2p_long_listen_timeout, 6350 wpa_s, NULL); 6351 } 6352 6353 return res; 6354 } 6355 6356 6357 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6358 u8 *buf, size_t len, int p2p_group) 6359 { 6360 struct wpabuf *p2p_ie; 6361 int ret; 6362 6363 if (wpa_s->global->p2p_disabled) 6364 return -1; 6365 /* 6366 * Advertize mandatory cross connection capability even on 6367 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6368 */ 6369 if (wpa_s->conf->p2p_disabled && p2p_group) 6370 return -1; 6371 if (wpa_s->global->p2p == NULL) 6372 return -1; 6373 if (bss == NULL) 6374 return -1; 6375 6376 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6377 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6378 p2p_group, p2p_ie); 6379 wpabuf_free(p2p_ie); 6380 6381 return ret; 6382 } 6383 6384 6385 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6386 const u8 *dst, const u8 *bssid, 6387 const u8 *ie, size_t ie_len, 6388 unsigned int rx_freq, int ssi_signal) 6389 { 6390 if (wpa_s->global->p2p_disabled) 6391 return 0; 6392 if (wpa_s->global->p2p == NULL) 6393 return 0; 6394 6395 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6396 ie, ie_len, rx_freq)) { 6397 case P2P_PREQ_NOT_P2P: 6398 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6399 ssi_signal); 6400 /* fall through */ 6401 case P2P_PREQ_MALFORMED: 6402 case P2P_PREQ_NOT_LISTEN: 6403 case P2P_PREQ_NOT_PROCESSED: 6404 default: /* make gcc happy */ 6405 return 0; 6406 case P2P_PREQ_PROCESSED: 6407 return 1; 6408 } 6409 } 6410 6411 6412 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 6413 const u8 *sa, const u8 *bssid, 6414 u8 category, const u8 *data, size_t len, int freq) 6415 { 6416 if (wpa_s->global->p2p_disabled) 6417 return; 6418 if (wpa_s->global->p2p == NULL) 6419 return; 6420 6421 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 6422 freq); 6423 } 6424 6425 6426 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 6427 { 6428 if (wpa_s->global->p2p_disabled) 6429 return; 6430 if (wpa_s->global->p2p == NULL) 6431 return; 6432 6433 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 6434 } 6435 6436 6437 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 6438 { 6439 p2p_group_deinit(wpa_s->p2p_group); 6440 wpa_s->p2p_group = NULL; 6441 6442 wpa_s->ap_configured_cb = NULL; 6443 wpa_s->ap_configured_cb_ctx = NULL; 6444 wpa_s->ap_configured_cb_data = NULL; 6445 wpa_s->connect_without_scan = NULL; 6446 } 6447 6448 6449 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 6450 { 6451 wpa_s->p2p_long_listen = 0; 6452 6453 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6454 return -1; 6455 6456 return p2p_reject(wpa_s->global->p2p, addr); 6457 } 6458 6459 6460 /* Invite to reinvoke a persistent group */ 6461 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6462 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 6463 int ht40, int vht, int pref_freq) 6464 { 6465 enum p2p_invite_role role; 6466 u8 *bssid = NULL; 6467 int force_freq = 0; 6468 int res; 6469 int no_pref_freq_given = pref_freq == 0; 6470 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6471 6472 wpa_s->global->p2p_invite_group = NULL; 6473 if (peer_addr) 6474 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 6475 else 6476 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 6477 6478 wpa_s->p2p_persistent_go_freq = freq; 6479 wpa_s->p2p_go_ht40 = !!ht40; 6480 if (ssid->mode == WPAS_MODE_P2P_GO) { 6481 role = P2P_INVITE_ROLE_GO; 6482 if (peer_addr == NULL) { 6483 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 6484 "address in invitation command"); 6485 return -1; 6486 } 6487 if (wpas_p2p_create_iface(wpa_s)) { 6488 if (wpas_p2p_add_group_interface(wpa_s, 6489 WPA_IF_P2P_GO) < 0) { 6490 wpa_printf(MSG_ERROR, "P2P: Failed to " 6491 "allocate a new interface for the " 6492 "group"); 6493 return -1; 6494 } 6495 bssid = wpa_s->pending_interface_addr; 6496 } else 6497 bssid = wpa_s->own_addr; 6498 } else { 6499 role = P2P_INVITE_ROLE_CLIENT; 6500 peer_addr = ssid->bssid; 6501 } 6502 wpa_s->pending_invite_ssid_id = ssid->id; 6503 6504 size = P2P_MAX_PREF_CHANNELS; 6505 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6506 role == P2P_INVITE_ROLE_GO, 6507 pref_freq_list, &size); 6508 if (res) 6509 return res; 6510 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 6511 6512 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6513 return -1; 6514 6515 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 6516 no_pref_freq_given && pref_freq > 0 && 6517 wpa_s->num_multichan_concurrent > 1 && 6518 wpas_p2p_num_unused_channels(wpa_s) > 0) { 6519 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 6520 pref_freq); 6521 pref_freq = 0; 6522 } 6523 6524 /* 6525 * Stop any find/listen operations before invitation and possibly 6526 * connection establishment. 6527 */ 6528 wpas_p2p_stop_find_oper(wpa_s); 6529 6530 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6531 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 6532 1, pref_freq, -1); 6533 } 6534 6535 6536 /* Invite to join an active group */ 6537 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 6538 const u8 *peer_addr, const u8 *go_dev_addr) 6539 { 6540 struct wpa_global *global = wpa_s->global; 6541 enum p2p_invite_role role; 6542 u8 *bssid = NULL; 6543 struct wpa_ssid *ssid; 6544 int persistent; 6545 int freq = 0, force_freq = 0, pref_freq = 0; 6546 int res; 6547 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6548 6549 wpa_s->p2p_persistent_go_freq = 0; 6550 wpa_s->p2p_go_ht40 = 0; 6551 wpa_s->p2p_go_vht = 0; 6552 6553 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 6554 if (os_strcmp(wpa_s->ifname, ifname) == 0) 6555 break; 6556 } 6557 if (wpa_s == NULL) { 6558 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 6559 return -1; 6560 } 6561 6562 ssid = wpa_s->current_ssid; 6563 if (ssid == NULL) { 6564 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 6565 "invitation"); 6566 return -1; 6567 } 6568 6569 wpa_s->global->p2p_invite_group = wpa_s; 6570 persistent = ssid->p2p_persistent_group && 6571 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 6572 ssid->ssid, ssid->ssid_len); 6573 6574 if (ssid->mode == WPAS_MODE_P2P_GO) { 6575 role = P2P_INVITE_ROLE_ACTIVE_GO; 6576 bssid = wpa_s->own_addr; 6577 if (go_dev_addr == NULL) 6578 go_dev_addr = wpa_s->global->p2p_dev_addr; 6579 freq = ssid->frequency; 6580 } else { 6581 role = P2P_INVITE_ROLE_CLIENT; 6582 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 6583 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 6584 "invite to current group"); 6585 return -1; 6586 } 6587 bssid = wpa_s->bssid; 6588 if (go_dev_addr == NULL && 6589 !is_zero_ether_addr(wpa_s->go_dev_addr)) 6590 go_dev_addr = wpa_s->go_dev_addr; 6591 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6592 (int) wpa_s->assoc_freq; 6593 } 6594 wpa_s->parent->pending_invite_ssid_id = -1; 6595 6596 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6597 return -1; 6598 6599 size = P2P_MAX_PREF_CHANNELS; 6600 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6601 role == P2P_INVITE_ROLE_ACTIVE_GO, 6602 pref_freq_list, &size); 6603 if (res) 6604 return res; 6605 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 6606 6607 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6608 ssid->ssid, ssid->ssid_len, force_freq, 6609 go_dev_addr, persistent, pref_freq, -1); 6610 } 6611 6612 6613 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 6614 { 6615 struct wpa_ssid *ssid = wpa_s->current_ssid; 6616 u8 go_dev_addr[ETH_ALEN]; 6617 int network_id = -1; 6618 int persistent; 6619 int freq; 6620 u8 ip[3 * 4]; 6621 char ip_addr[100]; 6622 6623 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 6624 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6625 wpa_s->parent, NULL); 6626 } 6627 6628 if (!wpa_s->show_group_started || !ssid) 6629 return; 6630 6631 wpa_s->show_group_started = 0; 6632 6633 os_memset(go_dev_addr, 0, ETH_ALEN); 6634 if (ssid->bssid_set) 6635 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 6636 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6637 ssid->ssid_len); 6638 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 6639 6640 if (wpa_s->global->p2p_group_formation == wpa_s) 6641 wpa_s->global->p2p_group_formation = NULL; 6642 6643 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6644 (int) wpa_s->assoc_freq; 6645 6646 ip_addr[0] = '\0'; 6647 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 6648 int res; 6649 6650 res = os_snprintf(ip_addr, sizeof(ip_addr), 6651 " ip_addr=%u.%u.%u.%u " 6652 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 6653 ip[0], ip[1], ip[2], ip[3], 6654 ip[4], ip[5], ip[6], ip[7], 6655 ip[8], ip[9], ip[10], ip[11]); 6656 if (os_snprintf_error(sizeof(ip_addr), res)) 6657 ip_addr[0] = '\0'; 6658 } 6659 6660 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 6661 ssid->passphrase == NULL && ssid->psk_set ? 6662 ssid->psk : NULL, 6663 ssid->passphrase, go_dev_addr, persistent, 6664 ip_addr); 6665 6666 if (persistent) 6667 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 6668 ssid, go_dev_addr); 6669 if (network_id < 0) 6670 network_id = ssid->id; 6671 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 6672 } 6673 6674 6675 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 6676 u32 interval1, u32 duration2, u32 interval2) 6677 { 6678 int ret; 6679 6680 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6681 return -1; 6682 6683 if (wpa_s->wpa_state < WPA_ASSOCIATED || 6684 wpa_s->current_ssid == NULL || 6685 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 6686 return -1; 6687 6688 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 6689 wpa_s->own_addr, wpa_s->assoc_freq, 6690 duration1, interval1, duration2, interval2); 6691 if (ret == 0) 6692 wpa_s->waiting_presence_resp = 1; 6693 6694 return ret; 6695 } 6696 6697 6698 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 6699 unsigned int interval) 6700 { 6701 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6702 return -1; 6703 6704 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 6705 } 6706 6707 6708 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 6709 { 6710 if (wpa_s->current_ssid == NULL) { 6711 /* 6712 * current_ssid can be cleared when P2P client interface gets 6713 * disconnected, so assume this interface was used as P2P 6714 * client. 6715 */ 6716 return 1; 6717 } 6718 return wpa_s->current_ssid->p2p_group && 6719 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 6720 } 6721 6722 6723 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 6724 { 6725 struct wpa_supplicant *wpa_s = eloop_ctx; 6726 6727 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 6728 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 6729 "disabled"); 6730 return; 6731 } 6732 6733 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 6734 "group"); 6735 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 6736 } 6737 6738 6739 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 6740 { 6741 int timeout; 6742 6743 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 6744 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 6745 6746 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 6747 return; 6748 6749 timeout = wpa_s->conf->p2p_group_idle; 6750 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 6751 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 6752 timeout = P2P_MAX_CLIENT_IDLE; 6753 6754 if (timeout == 0) 6755 return; 6756 6757 if (timeout < 0) { 6758 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 6759 timeout = 0; /* special client mode no-timeout */ 6760 else 6761 return; 6762 } 6763 6764 if (wpa_s->p2p_in_provisioning) { 6765 /* 6766 * Use the normal group formation timeout during the 6767 * provisioning phase to avoid terminating this process too 6768 * early due to group idle timeout. 6769 */ 6770 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 6771 "during provisioning"); 6772 return; 6773 } 6774 6775 if (wpa_s->show_group_started) { 6776 /* 6777 * Use the normal group formation timeout between the end of 6778 * the provisioning phase and completion of 4-way handshake to 6779 * avoid terminating this process too early due to group idle 6780 * timeout. 6781 */ 6782 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 6783 "while waiting for initial 4-way handshake to " 6784 "complete"); 6785 return; 6786 } 6787 6788 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 6789 timeout); 6790 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 6791 wpa_s, NULL); 6792 } 6793 6794 6795 /* Returns 1 if the interface was removed */ 6796 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 6797 u16 reason_code, const u8 *ie, size_t ie_len, 6798 int locally_generated) 6799 { 6800 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6801 return 0; 6802 6803 if (!locally_generated) 6804 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 6805 ie_len); 6806 6807 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 6808 wpa_s->current_ssid && 6809 wpa_s->current_ssid->p2p_group && 6810 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 6811 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 6812 "session is ending"); 6813 if (wpas_p2p_group_delete(wpa_s, 6814 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 6815 > 0) 6816 return 1; 6817 } 6818 6819 return 0; 6820 } 6821 6822 6823 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 6824 u16 reason_code, const u8 *ie, size_t ie_len, 6825 int locally_generated) 6826 { 6827 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6828 return; 6829 6830 if (!locally_generated) 6831 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 6832 ie_len); 6833 } 6834 6835 6836 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 6837 { 6838 struct p2p_data *p2p = wpa_s->global->p2p; 6839 6840 if (p2p == NULL) 6841 return; 6842 6843 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 6844 return; 6845 6846 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 6847 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 6848 6849 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 6850 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 6851 6852 if (wpa_s->wps && 6853 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 6854 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 6855 6856 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 6857 p2p_set_uuid(p2p, wpa_s->wps->uuid); 6858 6859 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 6860 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 6861 p2p_set_model_name(p2p, wpa_s->conf->model_name); 6862 p2p_set_model_number(p2p, wpa_s->conf->model_number); 6863 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 6864 } 6865 6866 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 6867 p2p_set_sec_dev_types(p2p, 6868 (void *) wpa_s->conf->sec_device_type, 6869 wpa_s->conf->num_sec_device_types); 6870 6871 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 6872 int i; 6873 p2p_remove_wps_vendor_extensions(p2p); 6874 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 6875 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 6876 continue; 6877 p2p_add_wps_vendor_extension( 6878 p2p, wpa_s->conf->wps_vendor_ext[i]); 6879 } 6880 } 6881 6882 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 6883 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 6884 char country[3]; 6885 country[0] = wpa_s->conf->country[0]; 6886 country[1] = wpa_s->conf->country[1]; 6887 country[2] = 0x04; 6888 p2p_set_country(p2p, country); 6889 } 6890 6891 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 6892 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 6893 wpa_s->conf->p2p_ssid_postfix ? 6894 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 6895 0); 6896 } 6897 6898 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 6899 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 6900 6901 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 6902 u8 reg_class, channel; 6903 int ret; 6904 unsigned int r; 6905 u8 channel_forced; 6906 6907 if (wpa_s->conf->p2p_listen_reg_class && 6908 wpa_s->conf->p2p_listen_channel) { 6909 reg_class = wpa_s->conf->p2p_listen_reg_class; 6910 channel = wpa_s->conf->p2p_listen_channel; 6911 channel_forced = 1; 6912 } else { 6913 reg_class = 81; 6914 /* 6915 * Pick one of the social channels randomly as the 6916 * listen channel. 6917 */ 6918 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 6919 channel = 1; 6920 else 6921 channel = 1 + (r % 3) * 5; 6922 channel_forced = 0; 6923 } 6924 ret = p2p_set_listen_channel(p2p, reg_class, channel, 6925 channel_forced); 6926 if (ret) 6927 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 6928 "failed: %d", ret); 6929 } 6930 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 6931 u8 op_reg_class, op_channel, cfg_op_channel; 6932 int ret = 0; 6933 unsigned int r; 6934 if (wpa_s->conf->p2p_oper_reg_class && 6935 wpa_s->conf->p2p_oper_channel) { 6936 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 6937 op_channel = wpa_s->conf->p2p_oper_channel; 6938 cfg_op_channel = 1; 6939 } else { 6940 op_reg_class = 81; 6941 /* 6942 * Use random operation channel from (1, 6, 11) 6943 *if no other preference is indicated. 6944 */ 6945 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 6946 op_channel = 1; 6947 else 6948 op_channel = 1 + (r % 3) * 5; 6949 cfg_op_channel = 0; 6950 } 6951 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 6952 cfg_op_channel); 6953 if (ret) 6954 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 6955 "failed: %d", ret); 6956 } 6957 6958 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 6959 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 6960 wpa_s->conf->p2p_pref_chan) < 0) { 6961 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 6962 "update failed"); 6963 } 6964 6965 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 6966 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 6967 "update failed"); 6968 } 6969 } 6970 6971 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 6972 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 6973 } 6974 6975 6976 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 6977 int duration) 6978 { 6979 if (!wpa_s->ap_iface) 6980 return -1; 6981 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 6982 duration); 6983 } 6984 6985 6986 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 6987 { 6988 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6989 return -1; 6990 6991 wpa_s->global->cross_connection = enabled; 6992 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 6993 6994 if (!enabled) { 6995 struct wpa_supplicant *iface; 6996 6997 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 6998 { 6999 if (iface->cross_connect_enabled == 0) 7000 continue; 7001 7002 iface->cross_connect_enabled = 0; 7003 iface->cross_connect_in_use = 0; 7004 wpa_msg_global(iface->parent, MSG_INFO, 7005 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7006 iface->ifname, 7007 iface->cross_connect_uplink); 7008 } 7009 } 7010 7011 return 0; 7012 } 7013 7014 7015 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7016 { 7017 struct wpa_supplicant *iface; 7018 7019 if (!uplink->global->cross_connection) 7020 return; 7021 7022 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7023 if (!iface->cross_connect_enabled) 7024 continue; 7025 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7026 0) 7027 continue; 7028 if (iface->ap_iface == NULL) 7029 continue; 7030 if (iface->cross_connect_in_use) 7031 continue; 7032 7033 iface->cross_connect_in_use = 1; 7034 wpa_msg_global(iface->parent, MSG_INFO, 7035 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7036 iface->ifname, iface->cross_connect_uplink); 7037 } 7038 } 7039 7040 7041 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7042 { 7043 struct wpa_supplicant *iface; 7044 7045 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7046 if (!iface->cross_connect_enabled) 7047 continue; 7048 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7049 0) 7050 continue; 7051 if (!iface->cross_connect_in_use) 7052 continue; 7053 7054 wpa_msg_global(iface->parent, MSG_INFO, 7055 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7056 iface->ifname, iface->cross_connect_uplink); 7057 iface->cross_connect_in_use = 0; 7058 } 7059 } 7060 7061 7062 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7063 { 7064 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7065 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7066 wpa_s->cross_connect_disallowed) 7067 wpas_p2p_disable_cross_connect(wpa_s); 7068 else 7069 wpas_p2p_enable_cross_connect(wpa_s); 7070 if (!wpa_s->ap_iface && 7071 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7072 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7073 } 7074 7075 7076 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7077 { 7078 wpas_p2p_disable_cross_connect(wpa_s); 7079 if (!wpa_s->ap_iface && 7080 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7081 wpa_s, NULL)) 7082 wpas_p2p_set_group_idle_timeout(wpa_s); 7083 } 7084 7085 7086 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7087 { 7088 struct wpa_supplicant *iface; 7089 7090 if (!wpa_s->global->cross_connection) 7091 return; 7092 7093 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7094 if (iface == wpa_s) 7095 continue; 7096 if (iface->drv_flags & 7097 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7098 continue; 7099 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7100 iface != wpa_s->parent) 7101 continue; 7102 7103 wpa_s->cross_connect_enabled = 1; 7104 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7105 sizeof(wpa_s->cross_connect_uplink)); 7106 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7107 "%s to %s whenever uplink is available", 7108 wpa_s->ifname, wpa_s->cross_connect_uplink); 7109 7110 if (iface->ap_iface || iface->current_ssid == NULL || 7111 iface->current_ssid->mode != WPAS_MODE_INFRA || 7112 iface->cross_connect_disallowed || 7113 iface->wpa_state != WPA_COMPLETED) 7114 break; 7115 7116 wpa_s->cross_connect_in_use = 1; 7117 wpa_msg_global(wpa_s->parent, MSG_INFO, 7118 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7119 wpa_s->ifname, wpa_s->cross_connect_uplink); 7120 break; 7121 } 7122 } 7123 7124 7125 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7126 { 7127 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7128 !wpa_s->p2p_in_provisioning) 7129 return 0; /* not P2P client operation */ 7130 7131 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7132 "session overlap"); 7133 if (wpa_s != wpa_s->parent) 7134 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 7135 wpas_p2p_group_formation_failed(wpa_s, 0); 7136 return 1; 7137 } 7138 7139 7140 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7141 { 7142 struct wpa_supplicant *wpa_s = eloop_ctx; 7143 wpas_p2p_notif_pbc_overlap(wpa_s); 7144 } 7145 7146 7147 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7148 enum wpas_p2p_channel_update_trig trig) 7149 { 7150 struct p2p_channels chan, cli_chan; 7151 struct wpa_used_freq_data *freqs = NULL; 7152 unsigned int num = wpa_s->num_multichan_concurrent; 7153 7154 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7155 return; 7156 7157 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7158 if (!freqs) 7159 return; 7160 7161 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7162 7163 os_memset(&chan, 0, sizeof(chan)); 7164 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7165 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7166 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7167 "channel list"); 7168 return; 7169 } 7170 7171 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7172 7173 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7174 7175 /* 7176 * The used frequencies map changed, so it is possible that a GO is 7177 * using a channel that is no longer valid for P2P use. It is also 7178 * possible that due to policy consideration, it would be preferable to 7179 * move it to a frequency already used by other station interfaces. 7180 */ 7181 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7182 7183 os_free(freqs); 7184 } 7185 7186 7187 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7188 struct wpa_scan_results *scan_res) 7189 { 7190 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7191 } 7192 7193 7194 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7195 { 7196 struct wpa_global *global = wpa_s->global; 7197 int found = 0; 7198 const u8 *peer; 7199 7200 if (global->p2p == NULL) 7201 return -1; 7202 7203 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7204 7205 if (wpa_s->pending_interface_name[0] && 7206 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7207 found = 1; 7208 7209 peer = p2p_get_go_neg_peer(global->p2p); 7210 if (peer) { 7211 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7212 MACSTR, MAC2STR(peer)); 7213 p2p_unauthorize(global->p2p, peer); 7214 found = 1; 7215 } 7216 7217 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7218 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7219 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7220 found = 1; 7221 } 7222 7223 if (wpa_s->pending_pd_before_join) { 7224 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7225 wpa_s->pending_pd_before_join = 0; 7226 found = 1; 7227 } 7228 7229 wpas_p2p_stop_find(wpa_s); 7230 7231 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7232 if (wpa_s == global->p2p_group_formation && 7233 (wpa_s->p2p_in_provisioning || 7234 wpa_s->parent->pending_interface_type == 7235 WPA_IF_P2P_CLIENT)) { 7236 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7237 "formation found - cancelling", 7238 wpa_s->ifname); 7239 found = 1; 7240 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7241 wpa_s->parent, NULL); 7242 if (wpa_s->p2p_in_provisioning) { 7243 wpas_group_formation_completed(wpa_s, 0, 0); 7244 break; 7245 } 7246 wpas_p2p_group_delete(wpa_s, 7247 P2P_GROUP_REMOVAL_REQUESTED); 7248 break; 7249 } else if (wpa_s->p2p_in_invitation) { 7250 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7251 wpa_s->ifname); 7252 found = 1; 7253 wpas_p2p_group_formation_failed(wpa_s, 0); 7254 } 7255 } 7256 7257 if (!found) { 7258 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7259 return -1; 7260 } 7261 7262 return 0; 7263 } 7264 7265 7266 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7267 { 7268 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7269 return; 7270 7271 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7272 "being available anymore"); 7273 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7274 } 7275 7276 7277 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7278 int freq_24, int freq_5, int freq_overall) 7279 { 7280 struct p2p_data *p2p = wpa_s->global->p2p; 7281 if (p2p == NULL) 7282 return; 7283 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7284 } 7285 7286 7287 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7288 { 7289 u8 peer[ETH_ALEN]; 7290 struct p2p_data *p2p = wpa_s->global->p2p; 7291 7292 if (p2p == NULL) 7293 return -1; 7294 7295 if (hwaddr_aton(addr, peer)) 7296 return -1; 7297 7298 return p2p_unauthorize(p2p, peer); 7299 } 7300 7301 7302 /** 7303 * wpas_p2p_disconnect - Disconnect from a P2P Group 7304 * @wpa_s: Pointer to wpa_supplicant data 7305 * Returns: 0 on success, -1 on failure 7306 * 7307 * This can be used to disconnect from a group in which the local end is a P2P 7308 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7309 * virtual network interface was created for this group, that interface will be 7310 * removed. Otherwise, only the configured P2P group network will be removed 7311 * from the interface. 7312 */ 7313 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7314 { 7315 7316 if (wpa_s == NULL) 7317 return -1; 7318 7319 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7320 -1 : 0; 7321 } 7322 7323 7324 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7325 { 7326 int ret; 7327 7328 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7329 return 0; 7330 7331 ret = p2p_in_progress(wpa_s->global->p2p); 7332 if (ret == 0) { 7333 /* 7334 * Check whether there is an ongoing WPS provisioning step (or 7335 * other parts of group formation) on another interface since 7336 * p2p_in_progress() does not report this to avoid issues for 7337 * scans during such provisioning step. 7338 */ 7339 if (wpa_s->global->p2p_group_formation && 7340 wpa_s->global->p2p_group_formation != wpa_s) { 7341 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7342 "in group formation", 7343 wpa_s->global->p2p_group_formation->ifname); 7344 ret = 1; 7345 } 7346 } 7347 7348 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7349 struct os_reltime now; 7350 os_get_reltime(&now); 7351 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7352 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7353 /* Wait for the first client has expired */ 7354 wpa_s->global->p2p_go_wait_client.sec = 0; 7355 } else { 7356 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7357 ret = 1; 7358 } 7359 } 7360 7361 return ret; 7362 } 7363 7364 7365 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7366 struct wpa_ssid *ssid) 7367 { 7368 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7369 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7370 wpa_s->parent, NULL) > 0) { 7371 /** 7372 * Remove the network by scheduling the group formation 7373 * timeout to happen immediately. The teardown code 7374 * needs to be scheduled to run asynch later so that we 7375 * don't delete data from under ourselves unexpectedly. 7376 * Calling wpas_p2p_group_formation_timeout directly 7377 * causes a series of crashes in WPS failure scenarios. 7378 */ 7379 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7380 "P2P group network getting removed"); 7381 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7382 wpa_s->parent, NULL); 7383 } 7384 } 7385 7386 7387 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 7388 const u8 *addr, const u8 *ssid, 7389 size_t ssid_len) 7390 { 7391 struct wpa_ssid *s; 7392 size_t i; 7393 7394 for (s = wpa_s->conf->ssid; s; s = s->next) { 7395 if (s->disabled != 2) 7396 continue; 7397 if (ssid && 7398 (ssid_len != s->ssid_len || 7399 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 7400 continue; 7401 if (addr == NULL) { 7402 if (s->mode == WPAS_MODE_P2P_GO) 7403 return s; 7404 continue; 7405 } 7406 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 7407 return s; /* peer is GO in the persistent group */ 7408 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 7409 continue; 7410 for (i = 0; i < s->num_p2p_clients; i++) { 7411 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 7412 addr, ETH_ALEN) == 0) 7413 return s; /* peer is P2P client in persistent 7414 * group */ 7415 } 7416 } 7417 7418 return NULL; 7419 } 7420 7421 7422 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 7423 const u8 *addr) 7424 { 7425 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7426 wpa_s->parent, NULL) > 0) { 7427 /* 7428 * This can happen if WPS provisioning step is not terminated 7429 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 7430 * peer was able to connect, there is no need to time out group 7431 * formation after this, though. In addition, this is used with 7432 * the initial connection wait on the GO as a separate formation 7433 * timeout and as such, expected to be hit after the initial WPS 7434 * provisioning step. 7435 */ 7436 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 7437 7438 if (!wpa_s->p2p_go_group_formation_completed && 7439 !wpa_s->group_formation_reported) { 7440 /* 7441 * GO has not yet notified group formation success since 7442 * the WPS step was not completed cleanly. Do that 7443 * notification now since the P2P Client was able to 7444 * connect and as such, must have received the 7445 * credential from the WPS step. 7446 */ 7447 if (wpa_s->global->p2p) 7448 p2p_wps_success_cb(wpa_s->global->p2p, addr); 7449 wpas_group_formation_completed(wpa_s, 1, 0); 7450 } 7451 } 7452 if (!wpa_s->p2p_go_group_formation_completed) { 7453 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 7454 wpa_s->p2p_go_group_formation_completed = 1; 7455 wpa_s->global->p2p_group_formation = NULL; 7456 wpa_s->p2p_in_provisioning = 0; 7457 wpa_s->p2p_in_invitation = 0; 7458 } 7459 wpa_s->global->p2p_go_wait_client.sec = 0; 7460 if (addr == NULL) 7461 return; 7462 wpas_p2p_add_persistent_group_client(wpa_s, addr); 7463 } 7464 7465 7466 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 7467 int group_added) 7468 { 7469 struct wpa_supplicant *group = wpa_s; 7470 int ret = 0; 7471 7472 if (wpa_s->global->p2p_group_formation) 7473 group = wpa_s->global->p2p_group_formation; 7474 wpa_s = wpa_s->global->p2p_init_wpa_s; 7475 offchannel_send_action_done(wpa_s); 7476 if (group_added) 7477 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 7478 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 7479 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 7480 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 7481 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 7482 wpa_s->p2p_persistent_id, 7483 wpa_s->p2p_pd_before_go_neg, 7484 wpa_s->p2p_go_ht40, 7485 wpa_s->p2p_go_vht); 7486 return ret; 7487 } 7488 7489 7490 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 7491 { 7492 int res; 7493 7494 if (!wpa_s->p2p_fallback_to_go_neg || 7495 wpa_s->p2p_in_provisioning <= 5) 7496 return 0; 7497 7498 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 7499 return 0; /* peer operating as a GO */ 7500 7501 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 7502 "fallback to GO Negotiation"); 7503 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 7504 "reason=GO-not-found"); 7505 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 7506 7507 return res == 1 ? 2 : 1; 7508 } 7509 7510 7511 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 7512 { 7513 struct wpa_supplicant *ifs; 7514 7515 if (wpa_s->wpa_state > WPA_SCANNING) { 7516 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 7517 "concurrent operation", 7518 wpa_s->conf->p2p_search_delay); 7519 return wpa_s->conf->p2p_search_delay; 7520 } 7521 7522 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 7523 radio_list) { 7524 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 7525 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 7526 "delay due to concurrent operation on " 7527 "interface %s", 7528 wpa_s->conf->p2p_search_delay, 7529 ifs->ifname); 7530 return wpa_s->conf->p2p_search_delay; 7531 } 7532 } 7533 7534 return 0; 7535 } 7536 7537 7538 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 7539 struct wpa_ssid *s, const u8 *addr, 7540 int iface_addr) 7541 { 7542 struct psk_list_entry *psk, *tmp; 7543 int changed = 0; 7544 7545 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 7546 list) { 7547 if ((iface_addr && !psk->p2p && 7548 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 7549 (!iface_addr && psk->p2p && 7550 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 7551 wpa_dbg(wpa_s, MSG_DEBUG, 7552 "P2P: Remove persistent group PSK list entry for " 7553 MACSTR " p2p=%u", 7554 MAC2STR(psk->addr), psk->p2p); 7555 dl_list_del(&psk->list); 7556 os_free(psk); 7557 changed++; 7558 } 7559 } 7560 7561 return changed; 7562 } 7563 7564 7565 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 7566 const u8 *p2p_dev_addr, 7567 const u8 *psk, size_t psk_len) 7568 { 7569 struct wpa_ssid *ssid = wpa_s->current_ssid; 7570 struct wpa_ssid *persistent; 7571 struct psk_list_entry *p, *last; 7572 7573 if (psk_len != sizeof(p->psk)) 7574 return; 7575 7576 if (p2p_dev_addr) { 7577 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 7578 " p2p_dev_addr=" MACSTR, 7579 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 7580 if (is_zero_ether_addr(p2p_dev_addr)) 7581 p2p_dev_addr = NULL; 7582 } else { 7583 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 7584 MAC2STR(mac_addr)); 7585 } 7586 7587 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 7588 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 7589 /* To be added to persistent group once created */ 7590 if (wpa_s->global->add_psk == NULL) { 7591 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 7592 if (wpa_s->global->add_psk == NULL) 7593 return; 7594 } 7595 p = wpa_s->global->add_psk; 7596 if (p2p_dev_addr) { 7597 p->p2p = 1; 7598 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7599 } else { 7600 p->p2p = 0; 7601 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7602 } 7603 os_memcpy(p->psk, psk, psk_len); 7604 return; 7605 } 7606 7607 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 7608 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 7609 return; 7610 } 7611 7612 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 7613 ssid->ssid_len); 7614 if (!persistent) { 7615 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 7616 return; 7617 } 7618 7619 p = os_zalloc(sizeof(*p)); 7620 if (p == NULL) 7621 return; 7622 if (p2p_dev_addr) { 7623 p->p2p = 1; 7624 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7625 } else { 7626 p->p2p = 0; 7627 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7628 } 7629 os_memcpy(p->psk, psk, psk_len); 7630 7631 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 7632 (last = dl_list_last(&persistent->psk_list, 7633 struct psk_list_entry, list))) { 7634 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 7635 MACSTR " (p2p=%u) to make room for a new one", 7636 MAC2STR(last->addr), last->p2p); 7637 dl_list_del(&last->list); 7638 os_free(last); 7639 } 7640 7641 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent, 7642 p2p_dev_addr ? p2p_dev_addr : mac_addr, 7643 p2p_dev_addr == NULL); 7644 if (p2p_dev_addr) { 7645 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 7646 MACSTR, MAC2STR(p2p_dev_addr)); 7647 } else { 7648 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 7649 MAC2STR(mac_addr)); 7650 } 7651 dl_list_add(&persistent->psk_list, &p->list); 7652 7653 if (wpa_s->parent->conf->update_config && 7654 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 7655 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 7656 } 7657 7658 7659 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 7660 struct wpa_ssid *s, const u8 *addr, 7661 int iface_addr) 7662 { 7663 int res; 7664 7665 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 7666 if (res > 0 && wpa_s->conf->update_config && 7667 wpa_config_write(wpa_s->confname, wpa_s->conf)) 7668 wpa_dbg(wpa_s, MSG_DEBUG, 7669 "P2P: Failed to update configuration"); 7670 } 7671 7672 7673 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 7674 const u8 *peer, int iface_addr) 7675 { 7676 struct hostapd_data *hapd; 7677 struct hostapd_wpa_psk *psk, *prev, *rem; 7678 struct sta_info *sta; 7679 7680 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 7681 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 7682 return; 7683 7684 /* Remove per-station PSK entry */ 7685 hapd = wpa_s->ap_iface->bss[0]; 7686 prev = NULL; 7687 psk = hapd->conf->ssid.wpa_psk; 7688 while (psk) { 7689 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 7690 (!iface_addr && 7691 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 7692 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 7693 MACSTR " iface_addr=%d", 7694 MAC2STR(peer), iface_addr); 7695 if (prev) 7696 prev->next = psk->next; 7697 else 7698 hapd->conf->ssid.wpa_psk = psk->next; 7699 rem = psk; 7700 psk = psk->next; 7701 os_free(rem); 7702 } else { 7703 prev = psk; 7704 psk = psk->next; 7705 } 7706 } 7707 7708 /* Disconnect from group */ 7709 if (iface_addr) 7710 sta = ap_get_sta(hapd, peer); 7711 else 7712 sta = ap_get_sta_p2p(hapd, peer); 7713 if (sta) { 7714 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 7715 " (iface_addr=%d) from group", 7716 MAC2STR(peer), iface_addr); 7717 hostapd_drv_sta_deauth(hapd, sta->addr, 7718 WLAN_REASON_DEAUTH_LEAVING); 7719 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 7720 } 7721 } 7722 7723 7724 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 7725 int iface_addr) 7726 { 7727 struct wpa_ssid *s; 7728 struct wpa_supplicant *w; 7729 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 7730 7731 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 7732 7733 /* Remove from any persistent group */ 7734 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 7735 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 7736 continue; 7737 if (!iface_addr) 7738 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 7739 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 7740 } 7741 7742 /* Remove from any operating group */ 7743 for (w = wpa_s->global->ifaces; w; w = w->next) 7744 wpas_p2p_remove_client_go(w, peer, iface_addr); 7745 } 7746 7747 7748 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 7749 { 7750 struct wpa_supplicant *wpa_s = eloop_ctx; 7751 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 7752 } 7753 7754 7755 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 7756 { 7757 struct wpa_supplicant *wpa_s = eloop_ctx; 7758 7759 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 7760 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 7761 } 7762 7763 7764 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 7765 struct wpa_ssid *ssid) 7766 { 7767 struct wpa_supplicant *iface; 7768 7769 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7770 if (!iface->current_ssid || 7771 iface->current_ssid->frequency == freq || 7772 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 7773 !iface->current_ssid->p2p_group)) 7774 continue; 7775 7776 /* Remove the connection with least priority */ 7777 if (!wpas_is_p2p_prioritized(iface)) { 7778 /* STA connection has priority over existing 7779 * P2P connection, so remove the interface. */ 7780 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 7781 eloop_register_timeout(0, 0, 7782 wpas_p2p_group_freq_conflict, 7783 iface, NULL); 7784 /* If connection in progress is P2P connection, do not 7785 * proceed for the connection. */ 7786 if (wpa_s == iface) 7787 return -1; 7788 else 7789 return 0; 7790 } else { 7791 /* P2P connection has priority, disable the STA network 7792 */ 7793 wpa_supplicant_disable_network(wpa_s->global->ifaces, 7794 ssid); 7795 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 7796 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 7797 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 7798 ETH_ALEN); 7799 /* If P2P connection is in progress, continue 7800 * connecting...*/ 7801 if (wpa_s == iface) 7802 return 0; 7803 else 7804 return -1; 7805 } 7806 } 7807 7808 return 0; 7809 } 7810 7811 7812 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 7813 { 7814 struct wpa_ssid *ssid = wpa_s->current_ssid; 7815 7816 if (ssid == NULL || !ssid->p2p_group) 7817 return 0; 7818 7819 if (wpa_s->p2p_last_4way_hs_fail && 7820 wpa_s->p2p_last_4way_hs_fail == ssid) { 7821 u8 go_dev_addr[ETH_ALEN]; 7822 struct wpa_ssid *persistent; 7823 7824 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 7825 ssid->ssid, 7826 ssid->ssid_len) <= 0) { 7827 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 7828 goto disconnect; 7829 } 7830 7831 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 7832 MACSTR, MAC2STR(go_dev_addr)); 7833 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr, 7834 ssid->ssid, 7835 ssid->ssid_len); 7836 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 7837 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 7838 goto disconnect; 7839 } 7840 wpa_msg_global(wpa_s->parent, MSG_INFO, 7841 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 7842 persistent->id); 7843 disconnect: 7844 wpa_s->p2p_last_4way_hs_fail = NULL; 7845 /* 7846 * Remove the group from a timeout to avoid issues with caller 7847 * continuing to use the interface if this is on a P2P group 7848 * interface. 7849 */ 7850 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 7851 wpa_s, NULL); 7852 return 1; 7853 } 7854 7855 wpa_s->p2p_last_4way_hs_fail = ssid; 7856 return 0; 7857 } 7858 7859 7860 #ifdef CONFIG_WPS_NFC 7861 7862 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 7863 struct wpabuf *p2p) 7864 { 7865 struct wpabuf *ret; 7866 size_t wsc_len; 7867 7868 if (p2p == NULL) { 7869 wpabuf_free(wsc); 7870 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 7871 return NULL; 7872 } 7873 7874 wsc_len = wsc ? wpabuf_len(wsc) : 0; 7875 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 7876 if (ret == NULL) { 7877 wpabuf_free(wsc); 7878 wpabuf_free(p2p); 7879 return NULL; 7880 } 7881 7882 wpabuf_put_be16(ret, wsc_len); 7883 if (wsc) 7884 wpabuf_put_buf(ret, wsc); 7885 wpabuf_put_be16(ret, wpabuf_len(p2p)); 7886 wpabuf_put_buf(ret, p2p); 7887 7888 wpabuf_free(wsc); 7889 wpabuf_free(p2p); 7890 wpa_hexdump_buf(MSG_DEBUG, 7891 "P2P: Generated NFC connection handover message", ret); 7892 7893 if (ndef && ret) { 7894 struct wpabuf *tmp; 7895 tmp = ndef_build_p2p(ret); 7896 wpabuf_free(ret); 7897 if (tmp == NULL) { 7898 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 7899 return NULL; 7900 } 7901 ret = tmp; 7902 } 7903 7904 return ret; 7905 } 7906 7907 7908 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 7909 struct wpa_ssid **ssid, u8 *go_dev_addr) 7910 { 7911 struct wpa_supplicant *iface; 7912 7913 if (go_dev_addr) 7914 os_memset(go_dev_addr, 0, ETH_ALEN); 7915 if (ssid) 7916 *ssid = NULL; 7917 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7918 if (iface->wpa_state < WPA_ASSOCIATING || 7919 iface->current_ssid == NULL || iface->assoc_freq == 0 || 7920 !iface->current_ssid->p2p_group || 7921 iface->current_ssid->mode != WPAS_MODE_INFRA) 7922 continue; 7923 if (ssid) 7924 *ssid = iface->current_ssid; 7925 if (go_dev_addr) 7926 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 7927 return iface->assoc_freq; 7928 } 7929 return 0; 7930 } 7931 7932 7933 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 7934 int ndef) 7935 { 7936 struct wpabuf *wsc, *p2p; 7937 struct wpa_ssid *ssid; 7938 u8 go_dev_addr[ETH_ALEN]; 7939 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 7940 7941 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 7942 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 7943 return NULL; 7944 } 7945 7946 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 7947 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 7948 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 7949 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 7950 return NULL; 7951 } 7952 7953 if (cli_freq == 0) { 7954 wsc = wps_build_nfc_handover_req_p2p( 7955 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 7956 } else 7957 wsc = NULL; 7958 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 7959 go_dev_addr, ssid ? ssid->ssid : NULL, 7960 ssid ? ssid->ssid_len : 0); 7961 7962 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 7963 } 7964 7965 7966 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 7967 int ndef, int tag) 7968 { 7969 struct wpabuf *wsc, *p2p; 7970 struct wpa_ssid *ssid; 7971 u8 go_dev_addr[ETH_ALEN]; 7972 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 7973 7974 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7975 return NULL; 7976 7977 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 7978 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 7979 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 7980 return NULL; 7981 7982 if (cli_freq == 0) { 7983 wsc = wps_build_nfc_handover_sel_p2p( 7984 wpa_s->parent->wps, 7985 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 7986 DEV_PW_NFC_CONNECTION_HANDOVER, 7987 wpa_s->conf->wps_nfc_dh_pubkey, 7988 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 7989 } else 7990 wsc = NULL; 7991 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 7992 go_dev_addr, ssid ? ssid->ssid : NULL, 7993 ssid ? ssid->ssid_len : 0); 7994 7995 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 7996 } 7997 7998 7999 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8000 struct p2p_nfc_params *params) 8001 { 8002 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8003 "connection handover (freq=%d)", 8004 params->go_freq); 8005 8006 if (params->go_freq && params->go_ssid_len) { 8007 wpa_s->p2p_wps_method = WPS_NFC; 8008 wpa_s->pending_join_wps_method = WPS_NFC; 8009 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8010 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8011 ETH_ALEN); 8012 return wpas_p2p_join_start(wpa_s, params->go_freq, 8013 params->go_ssid, 8014 params->go_ssid_len); 8015 } 8016 8017 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8018 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8019 params->go_freq, -1, 0, 1, 1); 8020 } 8021 8022 8023 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8024 struct p2p_nfc_params *params, int tag) 8025 { 8026 int res, persistent; 8027 struct wpa_ssid *ssid; 8028 8029 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8030 "connection handover"); 8031 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8032 ssid = wpa_s->current_ssid; 8033 if (ssid == NULL) 8034 continue; 8035 if (ssid->mode != WPAS_MODE_P2P_GO) 8036 continue; 8037 if (wpa_s->ap_iface == NULL) 8038 continue; 8039 break; 8040 } 8041 if (wpa_s == NULL) { 8042 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8043 return -1; 8044 } 8045 8046 if (wpa_s->parent->p2p_oob_dev_pw_id != 8047 DEV_PW_NFC_CONNECTION_HANDOVER && 8048 !wpa_s->parent->p2p_oob_dev_pw) { 8049 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8050 return -1; 8051 } 8052 res = wpas_ap_wps_add_nfc_pw( 8053 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 8054 wpa_s->parent->p2p_oob_dev_pw, 8055 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 8056 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 8057 if (res) 8058 return res; 8059 8060 if (!tag) { 8061 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8062 return 0; 8063 } 8064 8065 if (!params->peer || 8066 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8067 return 0; 8068 8069 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8070 " to join", MAC2STR(params->peer->p2p_device_addr)); 8071 8072 wpa_s->global->p2p_invite_group = wpa_s; 8073 persistent = ssid->p2p_persistent_group && 8074 wpas_p2p_get_persistent(wpa_s->parent, 8075 params->peer->p2p_device_addr, 8076 ssid->ssid, ssid->ssid_len); 8077 wpa_s->parent->pending_invite_ssid_id = -1; 8078 8079 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8080 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8081 ssid->ssid, ssid->ssid_len, ssid->frequency, 8082 wpa_s->global->p2p_dev_addr, persistent, 0, 8083 wpa_s->parent->p2p_oob_dev_pw_id); 8084 } 8085 8086 8087 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8088 struct p2p_nfc_params *params, 8089 int forced_freq) 8090 { 8091 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8092 "connection handover"); 8093 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8094 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8095 forced_freq, -1, 0, 1, 1); 8096 } 8097 8098 8099 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8100 struct p2p_nfc_params *params, 8101 int forced_freq) 8102 { 8103 int res; 8104 8105 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8106 "connection handover"); 8107 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8108 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8109 forced_freq, -1, 0, 1, 1); 8110 if (res) 8111 return res; 8112 8113 res = wpas_p2p_listen(wpa_s, 60); 8114 if (res) { 8115 p2p_unauthorize(wpa_s->global->p2p, 8116 params->peer->p2p_device_addr); 8117 } 8118 8119 return res; 8120 } 8121 8122 8123 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8124 const struct wpabuf *data, 8125 int sel, int tag, int forced_freq) 8126 { 8127 const u8 *pos, *end; 8128 u16 len, id; 8129 struct p2p_nfc_params params; 8130 int res; 8131 8132 os_memset(¶ms, 0, sizeof(params)); 8133 params.sel = sel; 8134 8135 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8136 8137 pos = wpabuf_head(data); 8138 end = pos + wpabuf_len(data); 8139 8140 if (end - pos < 2) { 8141 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8142 "attributes"); 8143 return -1; 8144 } 8145 len = WPA_GET_BE16(pos); 8146 pos += 2; 8147 if (len > end - pos) { 8148 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8149 "attributes"); 8150 return -1; 8151 } 8152 params.wsc_attr = pos; 8153 params.wsc_len = len; 8154 pos += len; 8155 8156 if (end - pos < 2) { 8157 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8158 "attributes"); 8159 return -1; 8160 } 8161 len = WPA_GET_BE16(pos); 8162 pos += 2; 8163 if (len > end - pos) { 8164 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8165 "attributes"); 8166 return -1; 8167 } 8168 params.p2p_attr = pos; 8169 params.p2p_len = len; 8170 pos += len; 8171 8172 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8173 params.wsc_attr, params.wsc_len); 8174 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8175 params.p2p_attr, params.p2p_len); 8176 if (pos < end) { 8177 wpa_hexdump(MSG_DEBUG, 8178 "P2P: Ignored extra data after P2P attributes", 8179 pos, end - pos); 8180 } 8181 8182 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8183 if (res) 8184 return res; 8185 8186 if (params.next_step == NO_ACTION) 8187 return 0; 8188 8189 if (params.next_step == BOTH_GO) { 8190 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8191 MAC2STR(params.peer->p2p_device_addr)); 8192 return 0; 8193 } 8194 8195 if (params.next_step == PEER_CLIENT) { 8196 if (!is_zero_ether_addr(params.go_dev_addr)) { 8197 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8198 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8199 " ssid=\"%s\"", 8200 MAC2STR(params.peer->p2p_device_addr), 8201 params.go_freq, 8202 MAC2STR(params.go_dev_addr), 8203 wpa_ssid_txt(params.go_ssid, 8204 params.go_ssid_len)); 8205 } else { 8206 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8207 "peer=" MACSTR " freq=%d", 8208 MAC2STR(params.peer->p2p_device_addr), 8209 params.go_freq); 8210 } 8211 return 0; 8212 } 8213 8214 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8215 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8216 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8217 return 0; 8218 } 8219 8220 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8221 wpa_s->p2p_oob_dev_pw = NULL; 8222 8223 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8224 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8225 "received"); 8226 return -1; 8227 } 8228 8229 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8230 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8231 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8232 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8233 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8234 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8235 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8236 8237 if (tag) { 8238 if (id < 0x10) { 8239 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8240 "peer OOB Device Password Id %u", id); 8241 return -1; 8242 } 8243 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8244 "Device Password Id %u", id); 8245 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8246 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8247 params.oob_dev_pw_len - 8248 WPS_OOB_PUBKEY_HASH_LEN - 2); 8249 wpa_s->p2p_oob_dev_pw_id = id; 8250 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8251 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8252 params.oob_dev_pw_len - 8253 WPS_OOB_PUBKEY_HASH_LEN - 2); 8254 if (wpa_s->p2p_oob_dev_pw == NULL) 8255 return -1; 8256 8257 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8258 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8259 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8260 return -1; 8261 } else { 8262 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8263 "without Device Password"); 8264 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8265 } 8266 8267 switch (params.next_step) { 8268 case NO_ACTION: 8269 case BOTH_GO: 8270 case PEER_CLIENT: 8271 /* already covered above */ 8272 return 0; 8273 case JOIN_GROUP: 8274 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8275 case AUTH_JOIN: 8276 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8277 case INIT_GO_NEG: 8278 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8279 case RESP_GO_NEG: 8280 /* TODO: use own OOB Dev Pw */ 8281 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8282 } 8283 8284 return -1; 8285 } 8286 8287 8288 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8289 const struct wpabuf *data, int forced_freq) 8290 { 8291 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8292 return -1; 8293 8294 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8295 } 8296 8297 8298 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8299 const struct wpabuf *req, 8300 const struct wpabuf *sel, int forced_freq) 8301 { 8302 struct wpabuf *tmp; 8303 int ret; 8304 8305 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8306 return -1; 8307 8308 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8309 8310 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8311 wpabuf_head(req), wpabuf_len(req)); 8312 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8313 wpabuf_head(sel), wpabuf_len(sel)); 8314 if (forced_freq) 8315 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8316 tmp = ndef_parse_p2p(init ? sel : req); 8317 if (tmp == NULL) { 8318 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8319 return -1; 8320 } 8321 8322 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8323 forced_freq); 8324 wpabuf_free(tmp); 8325 8326 return ret; 8327 } 8328 8329 8330 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8331 { 8332 const u8 *if_addr; 8333 int go_intent = wpa_s->conf->p2p_go_intent; 8334 struct wpa_supplicant *iface; 8335 8336 if (wpa_s->global->p2p == NULL) 8337 return -1; 8338 8339 if (!enabled) { 8340 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8341 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8342 { 8343 if (!iface->ap_iface) 8344 continue; 8345 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8346 } 8347 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8348 0, NULL); 8349 if (wpa_s->p2p_nfc_tag_enabled) 8350 wpas_p2p_remove_pending_group_interface(wpa_s); 8351 wpa_s->p2p_nfc_tag_enabled = 0; 8352 return 0; 8353 } 8354 8355 if (wpa_s->global->p2p_disabled) 8356 return -1; 8357 8358 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8359 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8360 wpa_s->conf->wps_nfc_dev_pw == NULL || 8361 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8362 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8363 "to allow static handover cases"); 8364 return -1; 8365 } 8366 8367 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8368 8369 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8370 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8371 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8372 if (wpa_s->p2p_oob_dev_pw == NULL) 8373 return -1; 8374 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8375 8376 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 8377 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 8378 /* 8379 * P2P Group Interface present and the command came on group 8380 * interface, so enable the token for the current interface. 8381 */ 8382 wpa_s->create_p2p_iface = 0; 8383 } else { 8384 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 8385 } 8386 8387 if (wpa_s->create_p2p_iface) { 8388 enum wpa_driver_if_type iftype; 8389 /* Prepare to add a new interface for the group */ 8390 iftype = WPA_IF_P2P_GROUP; 8391 if (go_intent == 15) 8392 iftype = WPA_IF_P2P_GO; 8393 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 8394 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 8395 "interface for the group"); 8396 return -1; 8397 } 8398 8399 if_addr = wpa_s->pending_interface_addr; 8400 } else 8401 if_addr = wpa_s->own_addr; 8402 8403 wpa_s->p2p_nfc_tag_enabled = enabled; 8404 8405 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8406 struct hostapd_data *hapd; 8407 if (iface->ap_iface == NULL) 8408 continue; 8409 hapd = iface->ap_iface->bss[0]; 8410 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 8411 hapd->conf->wps_nfc_dh_pubkey = 8412 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 8413 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 8414 hapd->conf->wps_nfc_dh_privkey = 8415 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 8416 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 8417 hapd->conf->wps_nfc_dev_pw = 8418 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8419 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8420 8421 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 8422 wpa_dbg(iface, MSG_DEBUG, 8423 "P2P: Failed to enable NFC Tag for GO"); 8424 } 8425 } 8426 p2p_set_authorized_oob_dev_pw_id( 8427 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 8428 if_addr); 8429 8430 return 0; 8431 } 8432 8433 #endif /* CONFIG_WPS_NFC */ 8434 8435 8436 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 8437 struct wpa_used_freq_data *freqs, 8438 unsigned int num) 8439 { 8440 u8 curr_chan, cand, chan; 8441 unsigned int i; 8442 8443 /* 8444 * If possible, optimize the Listen channel to be a channel that is 8445 * already used by one of the other interfaces. 8446 */ 8447 if (!wpa_s->conf->p2p_optimize_listen_chan) 8448 return; 8449 8450 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 8451 return; 8452 8453 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 8454 for (i = 0, cand = 0; i < num; i++) { 8455 ieee80211_freq_to_chan(freqs[i].freq, &chan); 8456 if (curr_chan == chan) { 8457 cand = 0; 8458 break; 8459 } 8460 8461 if (chan == 1 || chan == 6 || chan == 11) 8462 cand = chan; 8463 } 8464 8465 if (cand) { 8466 wpa_dbg(wpa_s, MSG_DEBUG, 8467 "P2P: Update Listen channel to %u based on operating channel", 8468 cand); 8469 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 8470 } 8471 } 8472 8473 8474 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 8475 { 8476 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 8477 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 8478 return -1; 8479 } 8480 8481 /* TODO: Add CSA support */ 8482 wpa_dbg(wpa_s, MSG_DEBUG, "Moving GO with CSA is not implemented"); 8483 return -1; 8484 } 8485 8486 8487 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 8488 { 8489 struct p2p_go_neg_results params; 8490 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8491 8492 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 8493 8494 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 8495 current_ssid->frequency); 8496 8497 /* Stop the AP functionality */ 8498 /* TODO: Should do this in a way that does not indicated to possible 8499 * P2P Clients in the group that the group is terminated. */ 8500 wpa_supplicant_ap_deinit(wpa_s); 8501 8502 /* Reselect the GO frequency */ 8503 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, NULL)) { 8504 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 8505 wpas_p2p_group_delete(wpa_s, 8506 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8507 return; 8508 } 8509 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 8510 params.freq); 8511 8512 if (params.freq && 8513 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 8514 wpa_printf(MSG_DEBUG, 8515 "P2P: Selected freq (%u MHz) is not valid for P2P", 8516 params.freq); 8517 wpas_p2p_group_delete(wpa_s, 8518 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8519 return; 8520 } 8521 8522 /* Update the frequency */ 8523 current_ssid->frequency = params.freq; 8524 wpa_s->connect_without_scan = current_ssid; 8525 wpa_s->reassociate = 1; 8526 wpa_s->disconnected = 0; 8527 wpa_supplicant_req_scan(wpa_s, 0, 0); 8528 } 8529 8530 8531 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 8532 { 8533 struct wpa_supplicant *wpa_s = eloop_ctx; 8534 8535 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 8536 return; 8537 8538 wpas_p2p_go_update_common_freqs(wpa_s); 8539 8540 /* 8541 * First, try a channel switch flow. If it is not supported or fails, 8542 * take down the GO and bring it up again. 8543 */ 8544 if (wpas_p2p_move_go_csa(wpa_s) < 0) 8545 wpas_p2p_move_go_no_csa(wpa_s); 8546 } 8547 8548 8549 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 8550 { 8551 struct wpa_supplicant *wpa_s = eloop_ctx; 8552 struct wpa_used_freq_data *freqs = NULL; 8553 unsigned int num = wpa_s->num_multichan_concurrent; 8554 8555 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 8556 if (!freqs) 8557 return; 8558 8559 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 8560 8561 /* Previous attempt to move a GO was not possible -- try again. */ 8562 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 8563 WPAS_P2P_CHANNEL_UPDATE_ANY); 8564 8565 os_free(freqs); 8566 } 8567 8568 8569 /* 8570 * Consider moving a GO from its currently used frequency: 8571 * 1. It is possible that due to regulatory consideration the frequency 8572 * can no longer be used and there is a need to evacuate the GO. 8573 * 2. It is possible that due to MCC considerations, it would be preferable 8574 * to move the GO to a channel that is currently used by some other 8575 * station interface. 8576 * 8577 * In case a frequency that became invalid is once again valid, cancel a 8578 * previously initiated GO frequency change. 8579 */ 8580 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 8581 struct wpa_used_freq_data *freqs, 8582 unsigned int num) 8583 { 8584 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 8585 unsigned int timeout; 8586 int freq; 8587 8588 wpas_p2p_go_update_common_freqs(wpa_s); 8589 8590 freq = wpa_s->current_ssid->frequency; 8591 for (i = 0, invalid_freq = 0; i < num; i++) { 8592 if (freqs[i].freq == freq) { 8593 flags = freqs[i].flags; 8594 8595 /* The channel is invalid, must change it */ 8596 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 8597 wpa_dbg(wpa_s, MSG_DEBUG, 8598 "P2P: Freq=%d MHz no longer valid for GO", 8599 freq); 8600 invalid_freq = 1; 8601 } 8602 } else if (freqs[i].flags == 0) { 8603 /* Freq is not used by any other station interface */ 8604 continue; 8605 } else if (!p2p_supported_freq(wpa_s->global->p2p, 8606 freqs[i].freq)) { 8607 /* Freq is not valid for P2P use cases */ 8608 continue; 8609 } else if (wpa_s->conf->p2p_go_freq_change_policy == 8610 P2P_GO_FREQ_MOVE_SCM) { 8611 policy_move = 1; 8612 } else if (wpa_s->conf->p2p_go_freq_change_policy == 8613 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 8614 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 8615 policy_move = 1; 8616 } 8617 } 8618 8619 wpa_dbg(wpa_s, MSG_DEBUG, 8620 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 8621 invalid_freq, policy_move, flags); 8622 8623 /* 8624 * The channel is valid, or we are going to have a policy move, so 8625 * cancel timeout. 8626 */ 8627 if (!invalid_freq || policy_move) { 8628 wpa_dbg(wpa_s, MSG_DEBUG, 8629 "P2P: Cancel a GO move from freq=%d MHz", freq); 8630 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 8631 8632 if (wpas_p2p_in_progress(wpa_s)) { 8633 wpa_dbg(wpa_s, MSG_DEBUG, 8634 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 8635 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 8636 wpa_s, NULL); 8637 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 8638 wpas_p2p_reconsider_moving_go, 8639 wpa_s, NULL); 8640 return; 8641 } 8642 } 8643 8644 if (!invalid_freq && (!policy_move || flags != 0)) { 8645 wpa_dbg(wpa_s, MSG_DEBUG, 8646 "P2P: Not initiating a GO frequency change"); 8647 return; 8648 } 8649 8650 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 8651 timeout = P2P_GO_FREQ_CHANGE_TIME; 8652 else 8653 timeout = 0; 8654 8655 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 8656 freq, timeout); 8657 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 8658 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 8659 } 8660 8661 8662 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 8663 struct wpa_used_freq_data *freqs, 8664 unsigned int num, 8665 enum wpas_p2p_channel_update_trig trig) 8666 { 8667 struct wpa_supplicant *ifs; 8668 8669 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 8670 NULL); 8671 8672 /* 8673 * Travers all the radio interfaces, and for each GO interface, check 8674 * if there is a need to move the GO from the frequency it is using, 8675 * or in case the frequency is valid again, cancel the evacuation flow. 8676 */ 8677 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 8678 radio_list) { 8679 if (ifs->current_ssid == NULL || 8680 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 8681 continue; 8682 8683 /* 8684 * The GO was just started or completed channel switch, no need 8685 * to move it. 8686 */ 8687 if (wpa_s == ifs && 8688 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 8689 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 8690 wpa_dbg(wpa_s, MSG_DEBUG, 8691 "P2P: GO move - schedule re-consideration"); 8692 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 8693 wpas_p2p_reconsider_moving_go, 8694 wpa_s, NULL); 8695 continue; 8696 } 8697 8698 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 8699 } 8700 } 8701 8702 8703 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 8704 { 8705 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8706 return; 8707 8708 wpas_p2p_update_channel_list(wpa_s, 8709 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 8710 } 8711 8712 8713 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 8714 { 8715 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 8716 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 8717 "the management interface is being removed"); 8718 wpas_p2p_deinit_global(wpa_s->global); 8719 } 8720 } 8721 8722 8723 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 8724 { 8725 if (wpa_s->ap_iface->bss) 8726 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 8727 wpas_p2p_group_deinit(wpa_s); 8728 } 8729