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51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef P2P_MAX_CLIENT_IDLE 64 /* 65 * How many seconds to try to reconnect to the GO when connection in P2P client 66 * role has been lost. 67 */ 68 #define P2P_MAX_CLIENT_IDLE 10 69 #endif /* P2P_MAX_CLIENT_IDLE */ 70 71 #ifndef P2P_MAX_INITIAL_CONN_WAIT 72 /* 73 * How many seconds to wait for initial 4-way handshake to get completed after 74 * WPS provisioning step or after the re-invocation of a persistent group on a 75 * P2P Client. 76 */ 77 #define P2P_MAX_INITIAL_CONN_WAIT 10 78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 79 80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 81 /* 82 * How many seconds to wait for initial 4-way handshake to get completed after 83 * WPS provisioning step on the GO. This controls the extra time the P2P 84 * operation is considered to be in progress (e.g., to delay other scans) after 85 * WPS provisioning has been completed on the GO during group formation. 86 */ 87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10 88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 89 90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 91 /* 92 * How many seconds to wait for initial 4-way handshake to get completed after 93 * re-invocation of a persistent group on the GO when the client is expected 94 * to connect automatically (no user interaction). 95 */ 96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 98 99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 100 101 /* 102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 103 * was not possible. 104 */ 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30 106 107 enum p2p_group_removal_reason { 108 P2P_GROUP_REMOVAL_UNKNOWN, 109 P2P_GROUP_REMOVAL_SILENT, 110 P2P_GROUP_REMOVAL_FORMATION_FAILED, 111 P2P_GROUP_REMOVAL_REQUESTED, 112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 113 P2P_GROUP_REMOVAL_UNAVAILABLE, 114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 115 P2P_GROUP_REMOVAL_PSK_FAILURE, 116 P2P_GROUP_REMOVAL_FREQ_CONFLICT, 117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL 118 }; 119 120 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 122 static struct wpa_supplicant * 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 124 int go); 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 126 const u8 *ssid, size_t ssid_len); 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 128 int *force_freq, int *pref_freq, int go, 129 unsigned int *pref_freq_list, 130 unsigned int *num_pref_freq); 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 132 const u8 *ssid, size_t ssid_len); 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 135 const u8 *dev_addr, enum p2p_wps_method wps_method, 136 int auto_join, int freq, 137 const u8 *ssid, size_t ssid_len); 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 143 void *timeout_ctx); 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 146 int group_added); 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 148 static void wpas_stop_listen(void *ctx); 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 152 enum wpa_driver_if_type type); 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 154 int already_deleted); 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 156 struct wpa_used_freq_data *freqs, 157 unsigned int num); 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 160 static void 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 162 struct wpa_used_freq_data *freqs, unsigned int num, 163 enum wpas_p2p_channel_update_trig trig); 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx); 165 166 167 /* 168 * Get the number of concurrent channels that the HW can operate, but that are 169 * currently not in use by any of the wpa_supplicant interfaces. 170 */ 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 172 { 173 int *freqs; 174 int num, unused; 175 176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 177 if (!freqs) 178 return -1; 179 180 num = get_shared_radio_freqs(wpa_s, freqs, 181 wpa_s->num_multichan_concurrent); 182 os_free(freqs); 183 184 unused = wpa_s->num_multichan_concurrent - num; 185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 186 return unused; 187 } 188 189 190 /* 191 * Get the frequencies that are currently in use by one or more of the virtual 192 * interfaces, and that are also valid for P2P operation. 193 */ 194 static unsigned int 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 196 struct wpa_used_freq_data *p2p_freqs, 197 unsigned int len) 198 { 199 struct wpa_used_freq_data *freqs; 200 unsigned int num, i, j; 201 202 freqs = os_calloc(wpa_s->num_multichan_concurrent, 203 sizeof(struct wpa_used_freq_data)); 204 if (!freqs) 205 return 0; 206 207 num = get_shared_radio_freqs_data(wpa_s, freqs, 208 wpa_s->num_multichan_concurrent); 209 210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len); 211 212 for (i = 0, j = 0; i < num && j < len; i++) { 213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 214 p2p_freqs[j++] = freqs[i]; 215 } 216 217 os_free(freqs); 218 219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j); 220 221 return j; 222 } 223 224 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 226 int freq) 227 { 228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 229 return; 230 231 /* Use the wpa_s used to control the P2P Device operation */ 232 wpa_s = wpa_s->global->p2p_init_wpa_s; 233 234 if (wpa_s->conf->p2p_ignore_shared_freq && 235 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 236 wpas_p2p_num_unused_channels(wpa_s) > 0) { 237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 238 freq); 239 freq = 0; 240 } 241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 242 } 243 244 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 246 struct wpa_scan_results *scan_res) 247 { 248 size_t i; 249 250 if (wpa_s->p2p_scan_work) { 251 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 252 wpa_s->p2p_scan_work = NULL; 253 radio_work_done(work); 254 } 255 256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 257 return; 258 259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 260 (int) scan_res->num); 261 262 for (i = 0; i < scan_res->num; i++) { 263 struct wpa_scan_res *bss = scan_res->res[i]; 264 struct os_reltime time_tmp_age, entry_ts; 265 const u8 *ies; 266 size_t ies_len; 267 268 time_tmp_age.sec = bss->age / 1000; 269 time_tmp_age.usec = (bss->age % 1000) * 1000; 270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 271 272 ies = (const u8 *) (bss + 1); 273 ies_len = bss->ie_len; 274 if (bss->beacon_ie_len > 0 && 275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 278 MACSTR, MAC2STR(bss->bssid)); 279 ies = ies + ies_len; 280 ies_len = bss->beacon_ie_len; 281 } 282 283 284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 285 bss->freq, &entry_ts, bss->level, 286 ies, ies_len) > 0) 287 break; 288 } 289 290 p2p_scan_res_handled(wpa_s->global->p2p); 291 } 292 293 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 295 { 296 struct wpa_supplicant *wpa_s = work->wpa_s; 297 struct wpa_driver_scan_params *params = work->ctx; 298 int ret; 299 300 if (deinit) { 301 if (!work->started) { 302 wpa_scan_free_params(params); 303 return; 304 } 305 306 wpa_s->p2p_scan_work = NULL; 307 return; 308 } 309 310 if (wpa_s->clear_driver_scan_cache) { 311 wpa_printf(MSG_DEBUG, 312 "Request driver to clear scan cache due to local BSS flush"); 313 params->only_new_results = 1; 314 } 315 ret = wpa_drv_scan(wpa_s, params); 316 if (ret == 0) 317 wpa_s->curr_scan_cookie = params->scan_cookie; 318 wpa_scan_free_params(params); 319 work->ctx = NULL; 320 if (ret) { 321 radio_work_done(work); 322 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 323 return; 324 } 325 326 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 327 os_get_reltime(&wpa_s->scan_trigger_time); 328 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 329 wpa_s->own_scan_requested = 1; 330 wpa_s->clear_driver_scan_cache = 0; 331 wpa_s->p2p_scan_work = work; 332 } 333 334 335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s, 336 int freq) 337 { 338 if (wpa_s->global->p2p_24ghz_social_channels && 339 (freq == 2412 || freq == 2437 || freq == 2462)) { 340 /* 341 * Search all social channels regardless of whether these have 342 * been disabled for P2P operating channel use to avoid missing 343 * peers. 344 */ 345 return 1; 346 } 347 return p2p_supported_freq(wpa_s->global->p2p, freq); 348 } 349 350 351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 352 unsigned int num_req_dev_types, 353 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 354 { 355 struct wpa_supplicant *wpa_s = ctx; 356 struct wpa_driver_scan_params *params = NULL; 357 struct wpabuf *wps_ie, *ies; 358 unsigned int num_channels = 0; 359 int social_channels_freq[] = { 2412, 2437, 2462, 60480 }; 360 size_t ielen; 361 u8 *n, i; 362 unsigned int bands; 363 364 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 365 return -1; 366 367 if (wpa_s->p2p_scan_work) { 368 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 369 return -1; 370 } 371 372 params = os_zalloc(sizeof(*params)); 373 if (params == NULL) 374 return -1; 375 376 /* P2P Wildcard SSID */ 377 params->num_ssids = 1; 378 n = os_malloc(P2P_WILDCARD_SSID_LEN); 379 if (n == NULL) 380 goto fail; 381 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 382 params->ssids[0].ssid = n; 383 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 384 385 wpa_s->wps->dev.p2p = 1; 386 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 387 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 388 num_req_dev_types, req_dev_types); 389 if (wps_ie == NULL) 390 goto fail; 391 392 switch (type) { 393 case P2P_SCAN_SOCIAL: 394 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1, 395 sizeof(int)); 396 if (params->freqs == NULL) 397 goto fail; 398 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 399 if (wpas_p2p_search_social_channel( 400 wpa_s, social_channels_freq[i])) 401 params->freqs[num_channels++] = 402 social_channels_freq[i]; 403 } 404 params->freqs[num_channels++] = 0; 405 break; 406 case P2P_SCAN_FULL: 407 break; 408 case P2P_SCAN_SPECIFIC: 409 params->freqs = os_calloc(2, sizeof(int)); 410 if (params->freqs == NULL) 411 goto fail; 412 params->freqs[0] = freq; 413 params->freqs[1] = 0; 414 break; 415 case P2P_SCAN_SOCIAL_PLUS_ONE: 416 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2, 417 sizeof(int)); 418 if (params->freqs == NULL) 419 goto fail; 420 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 421 if (wpas_p2p_search_social_channel( 422 wpa_s, social_channels_freq[i])) 423 params->freqs[num_channels++] = 424 social_channels_freq[i]; 425 } 426 if (p2p_supported_freq(wpa_s->global->p2p, freq)) 427 params->freqs[num_channels++] = freq; 428 params->freqs[num_channels++] = 0; 429 break; 430 } 431 432 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 433 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 434 if (ies == NULL) { 435 wpabuf_free(wps_ie); 436 goto fail; 437 } 438 wpabuf_put_buf(ies, wps_ie); 439 wpabuf_free(wps_ie); 440 441 bands = wpas_get_bands(wpa_s, params->freqs); 442 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands); 443 444 params->p2p_probe = 1; 445 n = os_malloc(wpabuf_len(ies)); 446 if (n == NULL) { 447 wpabuf_free(ies); 448 goto fail; 449 } 450 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 451 params->extra_ies = n; 452 params->extra_ies_len = wpabuf_len(ies); 453 wpabuf_free(ies); 454 455 radio_remove_works(wpa_s, "p2p-scan", 0); 456 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 457 params) < 0) 458 goto fail; 459 return 0; 460 461 fail: 462 wpa_scan_free_params(params); 463 return -1; 464 } 465 466 467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 468 { 469 switch (p2p_group_interface) { 470 case P2P_GROUP_INTERFACE_PENDING: 471 return WPA_IF_P2P_GROUP; 472 case P2P_GROUP_INTERFACE_GO: 473 return WPA_IF_P2P_GO; 474 case P2P_GROUP_INTERFACE_CLIENT: 475 return WPA_IF_P2P_CLIENT; 476 } 477 478 return WPA_IF_P2P_GROUP; 479 } 480 481 482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 483 const u8 *ssid, 484 size_t ssid_len, int *go) 485 { 486 struct wpa_ssid *s; 487 488 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 489 for (s = wpa_s->conf->ssid; s; s = s->next) { 490 if (s->disabled != 0 || !s->p2p_group || 491 s->ssid_len != ssid_len || 492 os_memcmp(ssid, s->ssid, ssid_len) != 0) 493 continue; 494 if (s->mode == WPAS_MODE_P2P_GO && 495 s != wpa_s->current_ssid) 496 continue; 497 if (go) 498 *go = s->mode == WPAS_MODE_P2P_GO; 499 return wpa_s; 500 } 501 } 502 503 return NULL; 504 } 505 506 507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx) 508 { 509 struct wpa_supplicant *wpa_s = eloop_ctx; 510 wpa_printf(MSG_DEBUG, 511 "P2P: Complete previously requested removal of %s", 512 wpa_s->ifname); 513 wpas_p2p_disconnect(wpa_s); 514 } 515 516 517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s, 518 struct wpa_supplicant *calling_wpa_s) 519 { 520 if (calling_wpa_s == wpa_s && wpa_s && 521 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 522 /* 523 * The calling wpa_s instance is going to be removed. Do that 524 * from an eloop callback to keep the instance available until 525 * the caller has returned. This my be needed, e.g., to provide 526 * control interface responses on the per-interface socket. 527 */ 528 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect, 529 wpa_s, NULL) < 0) 530 return -1; 531 return 0; 532 } 533 534 return wpas_p2p_disconnect(wpa_s); 535 } 536 537 538 /* Determine total number of clients in active groups where we are the GO */ 539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s) 540 { 541 unsigned int count = 0; 542 struct wpa_ssid *s; 543 544 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 545 for (s = wpa_s->conf->ssid; s; s = s->next) { 546 wpa_printf(MSG_DEBUG, 547 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 548 wpa_s, s, s->disabled, s->p2p_group, 549 s->mode); 550 if (!s->disabled && s->p2p_group && 551 s->mode == WPAS_MODE_P2P_GO) { 552 count += p2p_get_group_num_members( 553 wpa_s->p2p_group); 554 } 555 } 556 } 557 558 return count; 559 } 560 561 562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s) 563 { 564 return !wpa_s->p2p_mgmt && wpa_s->current_ssid && 565 !wpa_s->current_ssid->disabled && 566 wpa_s->current_ssid->p2p_group && 567 wpa_s->current_ssid->p2p_persistent_group; 568 } 569 570 571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s) 572 { 573 return p2p_is_active_persistent_group(wpa_s) && 574 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO; 575 } 576 577 578 /* Find an interface for a P2P group where we are the GO */ 579 static struct wpa_supplicant * 580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s) 581 { 582 struct wpa_supplicant *save = NULL; 583 584 if (!wpa_s) 585 return NULL; 586 587 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 588 if (!p2p_is_active_persistent_go(wpa_s)) 589 continue; 590 591 /* Prefer a group with connected clients */ 592 if (p2p_get_group_num_members(wpa_s->p2p_group)) 593 return wpa_s; 594 save = wpa_s; 595 } 596 597 /* No group with connected clients, so pick the one without (if any) */ 598 return save; 599 } 600 601 602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s) 603 { 604 return p2p_is_active_persistent_group(wpa_s) && 605 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 606 } 607 608 609 /* Find an interface for a P2P group where we are the P2P Client */ 610 static struct wpa_supplicant * 611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s) 612 { 613 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 614 if (p2p_is_active_persistent_cli(wpa_s)) 615 return wpa_s; 616 } 617 618 return NULL; 619 } 620 621 622 /* Find a persistent group where we are the GO */ 623 static struct wpa_ssid * 624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s) 625 { 626 struct wpa_ssid *s; 627 628 for (s = wpa_s->conf->ssid; s; s = s->next) { 629 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO) 630 return s; 631 } 632 633 return NULL; 634 } 635 636 637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role, 638 unsigned int *force_freq, 639 unsigned int *pref_freq) 640 { 641 struct wpa_supplicant *wpa_s = ctx; 642 struct wpa_ssid *s; 643 u8 conncap = P2PS_SETUP_NONE; 644 unsigned int owned_members = 0; 645 struct wpa_supplicant *go_wpa_s, *cli_wpa_s; 646 struct wpa_ssid *persistent_go; 647 int p2p_no_group_iface; 648 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 649 650 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role); 651 652 if (force_freq) 653 *force_freq = 0; 654 if (pref_freq) 655 *pref_freq = 0; 656 657 size = P2P_MAX_PREF_CHANNELS; 658 if (force_freq && pref_freq && 659 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq, 660 (int *) pref_freq, 0, pref_freq_list, &size)) 661 wpas_p2p_set_own_freq_preference(wpa_s, 662 *force_freq ? *force_freq : 663 *pref_freq); 664 665 /* 666 * For non-concurrent capable devices: 667 * If persistent_go, then no new. 668 * If GO, then no client. 669 * If client, then no GO. 670 */ 671 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 672 if (go_wpa_s) 673 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group); 674 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 675 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s); 676 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s); 677 678 wpa_printf(MSG_DEBUG, 679 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p", 680 go_wpa_s, owned_members, cli_wpa_s, persistent_go); 681 682 /* If not concurrent, restrict our choices */ 683 if (p2p_no_group_iface) { 684 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface"); 685 686 if (cli_wpa_s) 687 return P2PS_SETUP_NONE; 688 689 if (go_wpa_s) { 690 if (role == P2PS_SETUP_CLIENT || 691 incoming == P2PS_SETUP_GROUP_OWNER || 692 p2p_client_limit_reached(go_wpa_s->p2p_group)) 693 return P2PS_SETUP_NONE; 694 695 return P2PS_SETUP_GROUP_OWNER; 696 } 697 698 if (persistent_go) { 699 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) { 700 if (!incoming) 701 return P2PS_SETUP_GROUP_OWNER | 702 P2PS_SETUP_CLIENT; 703 if (incoming == P2PS_SETUP_NEW) { 704 u8 r; 705 706 if (os_get_random(&r, sizeof(r)) < 0 || 707 (r & 1)) 708 return P2PS_SETUP_CLIENT; 709 return P2PS_SETUP_GROUP_OWNER; 710 } 711 } 712 } 713 } 714 715 /* If a required role has been specified, handle it here */ 716 if (role && role != P2PS_SETUP_NEW) { 717 switch (incoming) { 718 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 719 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 720 /* 721 * Peer has an active GO, so if the role allows it and 722 * we do not have any active roles, become client. 723 */ 724 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && 725 !cli_wpa_s) 726 return P2PS_SETUP_CLIENT; 727 728 /* fall through */ 729 730 case P2PS_SETUP_NONE: 731 case P2PS_SETUP_NEW: 732 conncap = role; 733 goto grp_owner; 734 735 case P2PS_SETUP_GROUP_OWNER: 736 /* 737 * Must be a complimentary role - cannot be a client to 738 * more than one peer. 739 */ 740 if (incoming == role || cli_wpa_s) 741 return P2PS_SETUP_NONE; 742 743 return P2PS_SETUP_CLIENT; 744 745 case P2PS_SETUP_CLIENT: 746 /* Must be a complimentary role */ 747 if (incoming != role) { 748 conncap = P2PS_SETUP_GROUP_OWNER; 749 goto grp_owner; 750 } 751 /* fall through */ 752 753 default: 754 return P2PS_SETUP_NONE; 755 } 756 } 757 758 /* 759 * For now, we only will support ownership of one group, and being a 760 * client of one group. Therefore, if we have either an existing GO 761 * group, or an existing client group, we will not do a new GO 762 * negotiation, but rather try to re-use the existing groups. 763 */ 764 switch (incoming) { 765 case P2PS_SETUP_NONE: 766 case P2PS_SETUP_NEW: 767 if (cli_wpa_s) 768 conncap = P2PS_SETUP_GROUP_OWNER; 769 else if (!owned_members) 770 conncap = P2PS_SETUP_NEW; 771 else if (incoming == P2PS_SETUP_NONE) 772 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT; 773 else 774 conncap = P2PS_SETUP_CLIENT; 775 break; 776 777 case P2PS_SETUP_CLIENT: 778 conncap = P2PS_SETUP_GROUP_OWNER; 779 break; 780 781 case P2PS_SETUP_GROUP_OWNER: 782 if (!cli_wpa_s) 783 conncap = P2PS_SETUP_CLIENT; 784 break; 785 786 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 787 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 788 if (cli_wpa_s) 789 conncap = P2PS_SETUP_GROUP_OWNER; 790 else { 791 u8 r; 792 793 if (os_get_random(&r, sizeof(r)) < 0 || 794 (r & 1)) 795 conncap = P2PS_SETUP_CLIENT; 796 else 797 conncap = P2PS_SETUP_GROUP_OWNER; 798 } 799 break; 800 801 default: 802 return P2PS_SETUP_NONE; 803 } 804 805 grp_owner: 806 if ((conncap & P2PS_SETUP_GROUP_OWNER) || 807 (!incoming && (conncap & P2PS_SETUP_NEW))) { 808 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group)) 809 conncap &= ~P2PS_SETUP_GROUP_OWNER; 810 811 s = wpas_p2p_get_persistent_go(wpa_s); 812 if (!s && !go_wpa_s && p2p_no_group_iface) { 813 p2p_set_intended_addr(wpa_s->global->p2p, 814 wpa_s->p2p_mgmt ? 815 wpa_s->parent->own_addr : 816 wpa_s->own_addr); 817 } else if (!s && !go_wpa_s) { 818 if (wpas_p2p_add_group_interface(wpa_s, 819 WPA_IF_P2P_GROUP) < 0) { 820 wpa_printf(MSG_ERROR, 821 "P2P: Failed to allocate a new interface for the group"); 822 return P2PS_SETUP_NONE; 823 } 824 wpa_s->global->pending_group_iface_for_p2ps = 1; 825 p2p_set_intended_addr(wpa_s->global->p2p, 826 wpa_s->pending_interface_addr); 827 } 828 } 829 830 return conncap; 831 } 832 833 834 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 835 enum p2p_group_removal_reason removal_reason) 836 { 837 struct wpa_ssid *ssid; 838 char *gtype; 839 const char *reason; 840 841 ssid = wpa_s->current_ssid; 842 if (ssid == NULL) { 843 /* 844 * The current SSID was not known, but there may still be a 845 * pending P2P group interface waiting for provisioning or a 846 * P2P group that is trying to reconnect. 847 */ 848 ssid = wpa_s->conf->ssid; 849 while (ssid) { 850 if (ssid->p2p_group && ssid->disabled != 2) 851 break; 852 ssid = ssid->next; 853 } 854 if (ssid == NULL && 855 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 856 { 857 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 858 "not found"); 859 return -1; 860 } 861 } 862 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 863 gtype = "GO"; 864 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 865 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 866 wpa_s->reassociate = 0; 867 wpa_s->disconnected = 1; 868 gtype = "client"; 869 } else 870 gtype = "GO"; 871 872 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 873 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 874 875 if (os_strcmp(gtype, "client") == 0) { 876 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 877 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal, 878 wpa_s, NULL)) { 879 wpa_printf(MSG_DEBUG, 880 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal"); 881 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE; 882 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, 883 wpa_s, NULL); 884 } 885 } 886 887 if (wpa_s->cross_connect_in_use) { 888 wpa_s->cross_connect_in_use = 0; 889 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 890 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 891 wpa_s->ifname, wpa_s->cross_connect_uplink); 892 } 893 switch (removal_reason) { 894 case P2P_GROUP_REMOVAL_REQUESTED: 895 reason = " reason=REQUESTED"; 896 break; 897 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 898 reason = " reason=FORMATION_FAILED"; 899 break; 900 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 901 reason = " reason=IDLE"; 902 break; 903 case P2P_GROUP_REMOVAL_UNAVAILABLE: 904 reason = " reason=UNAVAILABLE"; 905 break; 906 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 907 reason = " reason=GO_ENDING_SESSION"; 908 break; 909 case P2P_GROUP_REMOVAL_PSK_FAILURE: 910 reason = " reason=PSK_FAILURE"; 911 break; 912 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 913 reason = " reason=FREQ_CONFLICT"; 914 break; 915 default: 916 reason = ""; 917 break; 918 } 919 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 920 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 921 P2P_EVENT_GROUP_REMOVED "%s %s%s", 922 wpa_s->ifname, gtype, reason); 923 } 924 925 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 926 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 927 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 928 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 929 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 930 wpa_s->p2pdev, NULL) > 0) { 931 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 932 "timeout"); 933 wpa_s->p2p_in_provisioning = 0; 934 wpas_p2p_group_formation_failed(wpa_s, 1); 935 } 936 937 wpa_s->p2p_in_invitation = 0; 938 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 939 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL); 940 941 /* 942 * Make sure wait for the first client does not remain active after the 943 * group has been removed. 944 */ 945 wpa_s->global->p2p_go_wait_client.sec = 0; 946 947 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 948 struct wpa_global *global; 949 char *ifname; 950 enum wpa_driver_if_type type; 951 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 952 wpa_s->ifname); 953 global = wpa_s->global; 954 ifname = os_strdup(wpa_s->ifname); 955 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 956 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL); 957 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 958 wpa_s = global->ifaces; 959 if (wpa_s && ifname) 960 wpa_drv_if_remove(wpa_s, type, ifname); 961 os_free(ifname); 962 return 1; 963 } 964 965 /* 966 * The primary interface was used for P2P group operations, so 967 * need to reset its p2pdev. 968 */ 969 wpa_s->p2pdev = wpa_s->parent; 970 971 if (!wpa_s->p2p_go_group_formation_completed) { 972 wpa_s->global->p2p_group_formation = NULL; 973 wpa_s->p2p_in_provisioning = 0; 974 } 975 976 wpa_s->show_group_started = 0; 977 os_free(wpa_s->go_params); 978 wpa_s->go_params = NULL; 979 980 os_free(wpa_s->p2p_group_common_freqs); 981 wpa_s->p2p_group_common_freqs = NULL; 982 wpa_s->p2p_group_common_freqs_num = 0; 983 wpa_s->p2p_go_do_acs = 0; 984 985 wpa_s->waiting_presence_resp = 0; 986 987 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 988 if (ssid && (ssid->p2p_group || 989 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 990 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 991 int id = ssid->id; 992 if (ssid == wpa_s->current_ssid) { 993 wpa_sm_set_config(wpa_s->wpa, NULL); 994 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 995 wpa_s->current_ssid = NULL; 996 } 997 /* 998 * Networks objects created during any P2P activities are not 999 * exposed out as they might/will confuse certain non-P2P aware 1000 * applications since these network objects won't behave like 1001 * regular ones. 1002 * 1003 * Likewise, we don't send out network removed signals for such 1004 * network objects. 1005 */ 1006 wpa_config_remove_network(wpa_s->conf, id); 1007 wpa_supplicant_clear_status(wpa_s); 1008 wpa_supplicant_cancel_sched_scan(wpa_s); 1009 } else { 1010 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 1011 "found"); 1012 } 1013 if (wpa_s->ap_iface) 1014 wpa_supplicant_ap_deinit(wpa_s); 1015 else 1016 wpa_drv_deinit_p2p_cli(wpa_s); 1017 1018 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1019 1020 return 0; 1021 } 1022 1023 1024 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 1025 u8 *go_dev_addr, 1026 const u8 *ssid, size_t ssid_len) 1027 { 1028 struct wpa_bss *bss; 1029 const u8 *bssid; 1030 struct wpabuf *p2p; 1031 u8 group_capab; 1032 const u8 *addr; 1033 1034 if (wpa_s->go_params) 1035 bssid = wpa_s->go_params->peer_interface_addr; 1036 else 1037 bssid = wpa_s->bssid; 1038 1039 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 1040 if (bss == NULL && wpa_s->go_params && 1041 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 1042 bss = wpa_bss_get_p2p_dev_addr( 1043 wpa_s, wpa_s->go_params->peer_device_addr); 1044 if (bss == NULL) { 1045 u8 iface_addr[ETH_ALEN]; 1046 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 1047 iface_addr) == 0) 1048 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 1049 } 1050 if (bss == NULL) { 1051 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1052 "group is persistent - BSS " MACSTR " not found", 1053 MAC2STR(bssid)); 1054 return 0; 1055 } 1056 1057 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1058 if (p2p == NULL) 1059 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 1060 P2P_IE_VENDOR_TYPE); 1061 if (p2p == NULL) { 1062 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1063 "group is persistent - BSS " MACSTR 1064 " did not include P2P IE", MAC2STR(bssid)); 1065 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 1066 (u8 *) (bss + 1), bss->ie_len); 1067 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 1068 ((u8 *) bss + 1) + bss->ie_len, 1069 bss->beacon_ie_len); 1070 return 0; 1071 } 1072 1073 group_capab = p2p_get_group_capab(p2p); 1074 addr = p2p_get_go_dev_addr(p2p); 1075 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 1076 "group_capab=0x%x", group_capab); 1077 if (addr) { 1078 os_memcpy(go_dev_addr, addr, ETH_ALEN); 1079 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 1080 MAC2STR(addr)); 1081 } else 1082 os_memset(go_dev_addr, 0, ETH_ALEN); 1083 wpabuf_free(p2p); 1084 1085 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 1086 "go_dev_addr=" MACSTR, 1087 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 1088 1089 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP); 1090 } 1091 1092 1093 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 1094 struct wpa_ssid *ssid, 1095 const u8 *go_dev_addr) 1096 { 1097 struct wpa_ssid *s; 1098 int changed = 0; 1099 1100 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 1101 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 1102 for (s = wpa_s->conf->ssid; s; s = s->next) { 1103 if (s->disabled == 2 && 1104 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 1105 s->ssid_len == ssid->ssid_len && 1106 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 1107 break; 1108 } 1109 1110 if (s) { 1111 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 1112 "entry"); 1113 if (ssid->passphrase && !s->passphrase) 1114 changed = 1; 1115 else if (ssid->passphrase && s->passphrase && 1116 os_strcmp(ssid->passphrase, s->passphrase) != 0) 1117 changed = 1; 1118 } else { 1119 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 1120 "entry"); 1121 changed = 1; 1122 s = wpa_config_add_network(wpa_s->conf); 1123 if (s == NULL) 1124 return -1; 1125 1126 /* 1127 * Instead of network_added we emit persistent_group_added 1128 * notification. Also to keep the defense checks in 1129 * persistent_group obj registration method, we set the 1130 * relevant flags in s to designate it as a persistent group. 1131 */ 1132 s->p2p_group = 1; 1133 s->p2p_persistent_group = 1; 1134 wpas_notify_persistent_group_added(wpa_s, s); 1135 wpa_config_set_network_defaults(s); 1136 } 1137 1138 s->p2p_group = 1; 1139 s->p2p_persistent_group = 1; 1140 s->disabled = 2; 1141 s->bssid_set = 1; 1142 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 1143 s->mode = ssid->mode; 1144 s->auth_alg = WPA_AUTH_ALG_OPEN; 1145 s->key_mgmt = WPA_KEY_MGMT_PSK; 1146 s->proto = WPA_PROTO_RSN; 1147 s->pbss = ssid->pbss; 1148 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 1149 s->export_keys = 1; 1150 if (ssid->passphrase) { 1151 os_free(s->passphrase); 1152 s->passphrase = os_strdup(ssid->passphrase); 1153 } 1154 if (ssid->psk_set) { 1155 s->psk_set = 1; 1156 os_memcpy(s->psk, ssid->psk, 32); 1157 } 1158 if (s->passphrase && !s->psk_set) 1159 wpa_config_update_psk(s); 1160 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 1161 os_free(s->ssid); 1162 s->ssid = os_malloc(ssid->ssid_len); 1163 } 1164 if (s->ssid) { 1165 s->ssid_len = ssid->ssid_len; 1166 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 1167 } 1168 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 1169 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 1170 wpa_s->global->add_psk = NULL; 1171 changed = 1; 1172 } 1173 1174 if (changed && wpa_s->conf->update_config && 1175 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 1176 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1177 } 1178 1179 return s->id; 1180 } 1181 1182 1183 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 1184 const u8 *addr) 1185 { 1186 struct wpa_ssid *ssid, *s; 1187 u8 *n; 1188 size_t i; 1189 int found = 0; 1190 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 1191 1192 ssid = wpa_s->current_ssid; 1193 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 1194 !ssid->p2p_persistent_group) 1195 return; 1196 1197 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 1198 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 1199 continue; 1200 1201 if (s->ssid_len == ssid->ssid_len && 1202 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 1203 break; 1204 } 1205 1206 if (s == NULL) 1207 return; 1208 1209 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 1210 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr, 1211 ETH_ALEN) != 0) 1212 continue; 1213 1214 if (i == s->num_p2p_clients - 1) 1215 return; /* already the most recent entry */ 1216 1217 /* move the entry to mark it most recent */ 1218 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 1219 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 1220 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 1221 os_memcpy(s->p2p_client_list + 1222 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr, 1223 ETH_ALEN); 1224 os_memset(s->p2p_client_list + 1225 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1226 0xff, ETH_ALEN); 1227 found = 1; 1228 break; 1229 } 1230 1231 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 1232 n = os_realloc_array(s->p2p_client_list, 1233 s->num_p2p_clients + 1, 2 * ETH_ALEN); 1234 if (n == NULL) 1235 return; 1236 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr, 1237 ETH_ALEN); 1238 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN, 1239 0xff, ETH_ALEN); 1240 s->p2p_client_list = n; 1241 s->num_p2p_clients++; 1242 } else if (!found && s->p2p_client_list) { 1243 /* Not enough room for an additional entry - drop the oldest 1244 * entry */ 1245 os_memmove(s->p2p_client_list, 1246 s->p2p_client_list + 2 * ETH_ALEN, 1247 (s->num_p2p_clients - 1) * 2 * ETH_ALEN); 1248 os_memcpy(s->p2p_client_list + 1249 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, 1250 addr, ETH_ALEN); 1251 os_memset(s->p2p_client_list + 1252 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1253 0xff, ETH_ALEN); 1254 } 1255 1256 if (p2p_wpa_s->conf->update_config && 1257 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 1258 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1259 } 1260 1261 1262 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s, 1263 int go, struct wpa_ssid *ssid, int freq, 1264 const u8 *psk, const char *passphrase, 1265 const u8 *go_dev_addr, int persistent, 1266 const char *extra) 1267 { 1268 const char *ssid_txt; 1269 char psk_txt[65]; 1270 1271 if (psk) 1272 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32); 1273 else 1274 psk_txt[0] = '\0'; 1275 1276 if (ssid) 1277 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 1278 else 1279 ssid_txt = ""; 1280 1281 if (passphrase && passphrase[0] == '\0') 1282 passphrase = NULL; 1283 1284 /* 1285 * Include PSK/passphrase only in the control interface message and 1286 * leave it out from the debug log entry. 1287 */ 1288 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO, 1289 P2P_EVENT_GROUP_STARTED 1290 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr=" 1291 MACSTR "%s%s", 1292 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1293 psk ? " psk=" : "", psk_txt, 1294 passphrase ? " passphrase=\"" : "", 1295 passphrase ? passphrase : "", 1296 passphrase ? "\"" : "", 1297 MAC2STR(go_dev_addr), 1298 persistent ? " [PERSISTENT]" : "", extra); 1299 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED 1300 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s", 1301 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1302 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "", 1303 extra); 1304 } 1305 1306 1307 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 1308 int success, int already_deleted) 1309 { 1310 struct wpa_ssid *ssid; 1311 int client; 1312 int persistent; 1313 u8 go_dev_addr[ETH_ALEN]; 1314 1315 /* 1316 * This callback is likely called for the main interface. Update wpa_s 1317 * to use the group interface if a new interface was created for the 1318 * group. 1319 */ 1320 if (wpa_s->global->p2p_group_formation) 1321 wpa_s = wpa_s->global->p2p_group_formation; 1322 if (wpa_s->p2p_go_group_formation_completed) { 1323 wpa_s->global->p2p_group_formation = NULL; 1324 wpa_s->p2p_in_provisioning = 0; 1325 } else if (wpa_s->p2p_in_provisioning && !success) { 1326 wpa_msg(wpa_s, MSG_DEBUG, 1327 "P2P: Stop provisioning state due to failure"); 1328 wpa_s->p2p_in_provisioning = 0; 1329 } 1330 wpa_s->p2p_in_invitation = 0; 1331 wpa_s->group_formation_reported = 1; 1332 1333 if (!success) { 1334 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1335 P2P_EVENT_GROUP_FORMATION_FAILURE); 1336 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1337 if (already_deleted) 1338 return; 1339 wpas_p2p_group_delete(wpa_s, 1340 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1341 return; 1342 } 1343 1344 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1345 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1346 1347 ssid = wpa_s->current_ssid; 1348 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1349 ssid->mode = WPAS_MODE_P2P_GO; 1350 p2p_group_notif_formation_done(wpa_s->p2p_group); 1351 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1352 } 1353 1354 persistent = 0; 1355 if (ssid) { 1356 client = ssid->mode == WPAS_MODE_INFRA; 1357 if (ssid->mode == WPAS_MODE_P2P_GO) { 1358 persistent = ssid->p2p_persistent_group; 1359 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1360 ETH_ALEN); 1361 } else 1362 persistent = wpas_p2p_persistent_group(wpa_s, 1363 go_dev_addr, 1364 ssid->ssid, 1365 ssid->ssid_len); 1366 } else { 1367 client = wpa_s->p2p_group_interface == 1368 P2P_GROUP_INTERFACE_CLIENT; 1369 os_memset(go_dev_addr, 0, ETH_ALEN); 1370 } 1371 1372 wpa_s->show_group_started = 0; 1373 if (client) { 1374 /* 1375 * Indicate event only after successfully completed 4-way 1376 * handshake, i.e., when the interface is ready for data 1377 * packets. 1378 */ 1379 wpa_s->show_group_started = 1; 1380 } else { 1381 wpas_p2p_group_started(wpa_s, 1, ssid, 1382 ssid ? ssid->frequency : 0, 1383 ssid && ssid->passphrase == NULL && 1384 ssid->psk_set ? ssid->psk : NULL, 1385 ssid ? ssid->passphrase : NULL, 1386 go_dev_addr, persistent, ""); 1387 wpas_p2p_cross_connect_setup(wpa_s); 1388 wpas_p2p_set_group_idle_timeout(wpa_s); 1389 } 1390 1391 if (persistent) 1392 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 1393 ssid, go_dev_addr); 1394 else { 1395 os_free(wpa_s->global->add_psk); 1396 wpa_s->global->add_psk = NULL; 1397 } 1398 1399 if (!client) { 1400 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL); 1401 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1402 } 1403 } 1404 1405 1406 struct send_action_work { 1407 unsigned int freq; 1408 u8 dst[ETH_ALEN]; 1409 u8 src[ETH_ALEN]; 1410 u8 bssid[ETH_ALEN]; 1411 size_t len; 1412 unsigned int wait_time; 1413 u8 buf[0]; 1414 }; 1415 1416 1417 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s) 1418 { 1419 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx; 1420 1421 wpa_printf(MSG_DEBUG, 1422 "P2P: Free Action frame radio work @%p (freq=%u dst=" 1423 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)", 1424 wpa_s->p2p_send_action_work, awork->freq, 1425 MAC2STR(awork->dst), MAC2STR(awork->src), 1426 MAC2STR(awork->bssid), awork->wait_time); 1427 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame", 1428 awork->buf, awork->len); 1429 os_free(awork); 1430 wpa_s->p2p_send_action_work->ctx = NULL; 1431 radio_work_done(wpa_s->p2p_send_action_work); 1432 wpa_s->p2p_send_action_work = NULL; 1433 } 1434 1435 1436 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1437 void *timeout_ctx) 1438 { 1439 struct wpa_supplicant *wpa_s = eloop_ctx; 1440 1441 if (!wpa_s->p2p_send_action_work) 1442 return; 1443 1444 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1445 wpas_p2p_free_send_action_work(wpa_s); 1446 } 1447 1448 1449 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1450 { 1451 if (wpa_s->p2p_send_action_work) { 1452 struct send_action_work *awork; 1453 1454 awork = wpa_s->p2p_send_action_work->ctx; 1455 wpa_printf(MSG_DEBUG, 1456 "P2P: Clear Action TX work @%p (wait_time=%u)", 1457 wpa_s->p2p_send_action_work, awork->wait_time); 1458 if (awork->wait_time == 0) { 1459 wpas_p2p_free_send_action_work(wpa_s); 1460 } else { 1461 /* 1462 * In theory, this should not be needed, but number of 1463 * places in the P2P code is still using non-zero wait 1464 * time for the last Action frame in the sequence and 1465 * some of these do not call send_action_done(). 1466 */ 1467 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1468 wpa_s, NULL); 1469 eloop_register_timeout( 1470 0, awork->wait_time * 1000, 1471 wpas_p2p_send_action_work_timeout, 1472 wpa_s, NULL); 1473 } 1474 } 1475 } 1476 1477 1478 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1479 unsigned int freq, 1480 const u8 *dst, const u8 *src, 1481 const u8 *bssid, 1482 const u8 *data, size_t data_len, 1483 enum offchannel_send_action_result 1484 result) 1485 { 1486 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1487 1488 wpas_p2p_action_tx_clear(wpa_s); 1489 1490 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1491 return; 1492 1493 switch (result) { 1494 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1495 res = P2P_SEND_ACTION_SUCCESS; 1496 break; 1497 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1498 res = P2P_SEND_ACTION_NO_ACK; 1499 break; 1500 case OFFCHANNEL_SEND_ACTION_FAILED: 1501 res = P2P_SEND_ACTION_FAILED; 1502 break; 1503 } 1504 1505 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1506 1507 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1508 wpa_s->pending_pd_before_join && 1509 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1510 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1511 wpa_s->p2p_fallback_to_go_neg) { 1512 wpa_s->pending_pd_before_join = 0; 1513 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1514 "during p2p_connect-auto"); 1515 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1516 P2P_EVENT_FALLBACK_TO_GO_NEG 1517 "reason=no-ACK-to-PD-Req"); 1518 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1519 return; 1520 } 1521 } 1522 1523 1524 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1525 { 1526 struct wpa_supplicant *wpa_s = work->wpa_s; 1527 struct send_action_work *awork = work->ctx; 1528 1529 if (deinit) { 1530 if (work->started) { 1531 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1532 wpa_s, NULL); 1533 wpa_s->p2p_send_action_work = NULL; 1534 offchannel_send_action_done(wpa_s); 1535 } 1536 os_free(awork); 1537 return; 1538 } 1539 1540 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1541 awork->bssid, awork->buf, awork->len, 1542 awork->wait_time, 1543 wpas_p2p_send_action_tx_status, 1) < 0) { 1544 os_free(awork); 1545 radio_work_done(work); 1546 return; 1547 } 1548 wpa_s->p2p_send_action_work = work; 1549 } 1550 1551 1552 static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1553 unsigned int freq, const u8 *dst, 1554 const u8 *src, const u8 *bssid, const u8 *buf, 1555 size_t len, unsigned int wait_time) 1556 { 1557 struct send_action_work *awork; 1558 1559 if (wpa_s->p2p_send_action_work) { 1560 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1561 return -1; 1562 } 1563 1564 awork = os_zalloc(sizeof(*awork) + len); 1565 if (awork == NULL) 1566 return -1; 1567 1568 awork->freq = freq; 1569 os_memcpy(awork->dst, dst, ETH_ALEN); 1570 os_memcpy(awork->src, src, ETH_ALEN); 1571 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1572 awork->len = len; 1573 awork->wait_time = wait_time; 1574 os_memcpy(awork->buf, buf, len); 1575 1576 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1577 wpas_send_action_cb, awork) < 0) { 1578 os_free(awork); 1579 return -1; 1580 } 1581 1582 return 0; 1583 } 1584 1585 1586 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1587 const u8 *src, const u8 *bssid, const u8 *buf, 1588 size_t len, unsigned int wait_time, int *scheduled) 1589 { 1590 struct wpa_supplicant *wpa_s = ctx; 1591 int listen_freq = -1, send_freq = -1; 1592 1593 if (scheduled) 1594 *scheduled = 0; 1595 if (wpa_s->p2p_listen_work) 1596 listen_freq = wpa_s->p2p_listen_work->freq; 1597 if (wpa_s->p2p_send_action_work) 1598 send_freq = wpa_s->p2p_send_action_work->freq; 1599 if (listen_freq != (int) freq && send_freq != (int) freq) { 1600 int res; 1601 1602 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d freq=%u)", 1603 listen_freq, send_freq, freq); 1604 res = wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1605 len, wait_time); 1606 if (res == 0 && scheduled) 1607 *scheduled = 1; 1608 return res; 1609 } 1610 1611 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1612 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1613 wait_time, 1614 wpas_p2p_send_action_tx_status, 1); 1615 } 1616 1617 1618 static void wpas_send_action_done(void *ctx) 1619 { 1620 struct wpa_supplicant *wpa_s = ctx; 1621 1622 if (wpa_s->p2p_send_action_work) { 1623 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1624 wpa_s, NULL); 1625 os_free(wpa_s->p2p_send_action_work->ctx); 1626 radio_work_done(wpa_s->p2p_send_action_work); 1627 wpa_s->p2p_send_action_work = NULL; 1628 } 1629 1630 offchannel_send_action_done(wpa_s); 1631 } 1632 1633 1634 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1635 struct p2p_go_neg_results *params) 1636 { 1637 if (wpa_s->go_params == NULL) { 1638 wpa_s->go_params = os_malloc(sizeof(*params)); 1639 if (wpa_s->go_params == NULL) 1640 return -1; 1641 } 1642 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1643 return 0; 1644 } 1645 1646 1647 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1648 struct p2p_go_neg_results *res) 1649 { 1650 wpa_s->group_formation_reported = 0; 1651 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1652 " dev_addr " MACSTR " wps_method %d", 1653 MAC2STR(res->peer_interface_addr), 1654 MAC2STR(res->peer_device_addr), res->wps_method); 1655 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1656 res->ssid, res->ssid_len); 1657 wpa_supplicant_ap_deinit(wpa_s); 1658 wpas_copy_go_neg_results(wpa_s, res); 1659 if (res->wps_method == WPS_PBC) { 1660 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1, 0); 1661 #ifdef CONFIG_WPS_NFC 1662 } else if (res->wps_method == WPS_NFC) { 1663 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1664 res->peer_interface_addr, 1665 wpa_s->p2pdev->p2p_oob_dev_pw, 1666 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1, 1667 wpa_s->p2pdev->p2p_oob_dev_pw_id == 1668 DEV_PW_NFC_CONNECTION_HANDOVER ? 1669 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : 1670 NULL, 1671 NULL, 0, 0); 1672 #endif /* CONFIG_WPS_NFC */ 1673 } else { 1674 u16 dev_pw_id = DEV_PW_DEFAULT; 1675 if (wpa_s->p2p_wps_method == WPS_P2PS) 1676 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1677 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1678 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1679 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1680 wpa_s->p2p_pin, 1, dev_pw_id); 1681 } 1682 } 1683 1684 1685 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1686 struct wpa_ssid *ssid) 1687 { 1688 struct wpa_ssid *persistent; 1689 struct psk_list_entry *psk; 1690 struct hostapd_data *hapd; 1691 1692 if (!wpa_s->ap_iface) 1693 return; 1694 1695 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 1696 ssid->ssid_len); 1697 if (persistent == NULL) 1698 return; 1699 1700 hapd = wpa_s->ap_iface->bss[0]; 1701 1702 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1703 list) { 1704 struct hostapd_wpa_psk *hpsk; 1705 1706 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1707 MACSTR " psk=%d", 1708 MAC2STR(psk->addr), psk->p2p); 1709 hpsk = os_zalloc(sizeof(*hpsk)); 1710 if (hpsk == NULL) 1711 break; 1712 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1713 if (psk->p2p) 1714 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1715 else 1716 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1717 hpsk->next = hapd->conf->ssid.wpa_psk; 1718 hapd->conf->ssid.wpa_psk = hpsk; 1719 } 1720 } 1721 1722 1723 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1724 { 1725 char buf[20 + P2P_MAX_CHANNELS * 6]; 1726 char *pos, *end; 1727 unsigned int i; 1728 int res; 1729 1730 pos = buf; 1731 end = pos + sizeof(buf); 1732 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 1733 res = os_snprintf(pos, end - pos, " %d", 1734 wpa_s->p2p_group_common_freqs[i]); 1735 if (os_snprintf_error(end - pos, res)) 1736 break; 1737 pos += res; 1738 } 1739 *pos = '\0'; 1740 1741 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf); 1742 } 1743 1744 1745 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1746 struct p2p_go_neg_results *params) 1747 { 1748 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1749 1750 wpa_s->p2p_group_common_freqs_num = 0; 1751 os_free(wpa_s->p2p_group_common_freqs); 1752 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1753 if (!wpa_s->p2p_group_common_freqs) 1754 return; 1755 1756 for (i = 0; i < len; i++) { 1757 if (!wpa_s->go_params->freq_list[i]) 1758 break; 1759 wpa_s->p2p_group_common_freqs[i] = 1760 wpa_s->go_params->freq_list[i]; 1761 } 1762 wpa_s->p2p_group_common_freqs_num = i; 1763 } 1764 1765 1766 static void p2p_config_write(struct wpa_supplicant *wpa_s) 1767 { 1768 #ifndef CONFIG_NO_CONFIG_WRITE 1769 if (wpa_s->p2pdev->conf->update_config && 1770 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 1771 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1772 #endif /* CONFIG_NO_CONFIG_WRITE */ 1773 } 1774 1775 1776 static void p2p_go_configured(void *ctx, void *data) 1777 { 1778 struct wpa_supplicant *wpa_s = ctx; 1779 struct p2p_go_neg_results *params = data; 1780 struct wpa_ssid *ssid; 1781 1782 wpa_s->ap_configured_cb = NULL; 1783 wpa_s->ap_configured_cb_ctx = NULL; 1784 wpa_s->ap_configured_cb_data = NULL; 1785 if (!wpa_s->go_params) { 1786 wpa_printf(MSG_ERROR, 1787 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL"); 1788 return; 1789 } 1790 1791 p2p_go_save_group_common_freqs(wpa_s, params); 1792 p2p_go_dump_common_freqs(wpa_s); 1793 1794 ssid = wpa_s->current_ssid; 1795 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1796 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1797 if (wpa_s->global->p2p_group_formation == wpa_s) 1798 wpa_s->global->p2p_group_formation = NULL; 1799 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1800 params->passphrase[0] == '\0' ? 1801 params->psk : NULL, 1802 params->passphrase, 1803 wpa_s->global->p2p_dev_addr, 1804 params->persistent_group, ""); 1805 wpa_s->group_formation_reported = 1; 1806 1807 if (wpa_s->p2pdev->p2ps_method_config_any) { 1808 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) { 1809 wpa_dbg(wpa_s, MSG_DEBUG, 1810 "P2PS: Setting default PIN for ANY"); 1811 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1812 "12345670", NULL, 0, 1813 0); 1814 } else { 1815 wpa_dbg(wpa_s, MSG_DEBUG, 1816 "P2PS: Setting default PIN for " MACSTR, 1817 MAC2STR(wpa_s->p2pdev->p2ps_join_addr)); 1818 wpa_supplicant_ap_wps_pin( 1819 wpa_s, wpa_s->p2pdev->p2ps_join_addr, 1820 "12345670", NULL, 0, 0); 1821 } 1822 wpa_s->p2pdev->p2ps_method_config_any = 0; 1823 } 1824 1825 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1826 if (params->persistent_group) { 1827 wpas_p2p_store_persistent_group( 1828 wpa_s->p2pdev, ssid, 1829 wpa_s->global->p2p_dev_addr); 1830 wpas_p2p_add_psk_list(wpa_s, ssid); 1831 } 1832 1833 wpas_notify_p2p_group_started(wpa_s, ssid, 1834 params->persistent_group, 0, 1835 NULL); 1836 wpas_p2p_cross_connect_setup(wpa_s); 1837 wpas_p2p_set_group_idle_timeout(wpa_s); 1838 1839 if (wpa_s->p2p_first_connection_timeout) { 1840 wpa_dbg(wpa_s, MSG_DEBUG, 1841 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1842 wpa_s->p2p_first_connection_timeout); 1843 wpa_s->p2p_go_group_formation_completed = 0; 1844 wpa_s->global->p2p_group_formation = wpa_s; 1845 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1846 wpa_s->p2pdev, NULL); 1847 eloop_register_timeout( 1848 wpa_s->p2p_first_connection_timeout, 0, 1849 wpas_p2p_group_formation_timeout, 1850 wpa_s->p2pdev, NULL); 1851 } 1852 1853 return; 1854 } 1855 1856 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1857 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1858 params->peer_interface_addr)) { 1859 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1860 "filtering"); 1861 return; 1862 } 1863 if (params->wps_method == WPS_PBC) { 1864 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1865 params->peer_device_addr); 1866 #ifdef CONFIG_WPS_NFC 1867 } else if (params->wps_method == WPS_NFC) { 1868 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 1869 DEV_PW_NFC_CONNECTION_HANDOVER && 1870 !wpa_s->p2pdev->p2p_oob_dev_pw) { 1871 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1872 return; 1873 } 1874 wpas_ap_wps_add_nfc_pw( 1875 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 1876 wpa_s->p2pdev->p2p_oob_dev_pw, 1877 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 1878 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 1879 #endif /* CONFIG_WPS_NFC */ 1880 } else if (wpa_s->p2p_pin[0]) 1881 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1882 wpa_s->p2p_pin, NULL, 0, 0); 1883 os_free(wpa_s->go_params); 1884 wpa_s->go_params = NULL; 1885 } 1886 1887 1888 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1889 struct p2p_go_neg_results *params, 1890 int group_formation) 1891 { 1892 struct wpa_ssid *ssid; 1893 1894 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1895 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1896 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1897 "results"); 1898 return; 1899 } 1900 1901 ssid = wpa_config_add_network(wpa_s->conf); 1902 if (ssid == NULL) { 1903 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1904 return; 1905 } 1906 1907 wpa_s->show_group_started = 0; 1908 wpa_s->p2p_go_group_formation_completed = 0; 1909 wpa_s->group_formation_reported = 0; 1910 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1911 1912 wpa_config_set_network_defaults(ssid); 1913 ssid->temporary = 1; 1914 ssid->p2p_group = 1; 1915 ssid->p2p_persistent_group = !!params->persistent_group; 1916 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1917 WPAS_MODE_P2P_GO; 1918 ssid->frequency = params->freq; 1919 ssid->ht40 = params->ht40; 1920 ssid->vht = params->vht; 1921 ssid->max_oper_chwidth = params->max_oper_chwidth; 1922 ssid->vht_center_freq2 = params->vht_center_freq2; 1923 ssid->he = params->he; 1924 ssid->ssid = os_zalloc(params->ssid_len + 1); 1925 if (ssid->ssid) { 1926 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1927 ssid->ssid_len = params->ssid_len; 1928 } 1929 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1930 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1931 ssid->proto = WPA_PROTO_RSN; 1932 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1933 ssid->group_cipher = WPA_CIPHER_CCMP; 1934 if (params->freq > 56160) { 1935 /* 1936 * Enable GCMP instead of CCMP as pairwise_cipher and 1937 * group_cipher in 60 GHz. 1938 */ 1939 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1940 ssid->group_cipher = WPA_CIPHER_GCMP; 1941 /* P2P GO in 60 GHz is always a PCP (PBSS) */ 1942 ssid->pbss = 1; 1943 } 1944 if (os_strlen(params->passphrase) > 0) { 1945 ssid->passphrase = os_strdup(params->passphrase); 1946 if (ssid->passphrase == NULL) { 1947 wpa_msg_global(wpa_s, MSG_ERROR, 1948 "P2P: Failed to copy passphrase for GO"); 1949 wpa_config_remove_network(wpa_s->conf, ssid->id); 1950 return; 1951 } 1952 } else 1953 ssid->passphrase = NULL; 1954 ssid->psk_set = params->psk_set; 1955 if (ssid->psk_set) 1956 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1957 else if (ssid->passphrase) 1958 wpa_config_update_psk(ssid); 1959 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity; 1960 1961 wpa_s->ap_configured_cb = p2p_go_configured; 1962 wpa_s->ap_configured_cb_ctx = wpa_s; 1963 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1964 wpa_s->scan_req = NORMAL_SCAN_REQ; 1965 wpa_s->connect_without_scan = ssid; 1966 wpa_s->reassociate = 1; 1967 wpa_s->disconnected = 0; 1968 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1969 "start GO)"); 1970 wpa_supplicant_req_scan(wpa_s, 0, 0); 1971 } 1972 1973 1974 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1975 const struct wpa_supplicant *src) 1976 { 1977 struct wpa_config *d; 1978 const struct wpa_config *s; 1979 1980 d = dst->conf; 1981 s = src->conf; 1982 1983 #define C(n) \ 1984 do { \ 1985 if (s->n && !d->n) \ 1986 d->n = os_strdup(s->n); \ 1987 } while (0) 1988 1989 C(device_name); 1990 C(manufacturer); 1991 C(model_name); 1992 C(model_number); 1993 C(serial_number); 1994 C(config_methods); 1995 #undef C 1996 1997 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1998 os_memcpy(d->sec_device_type, s->sec_device_type, 1999 sizeof(d->sec_device_type)); 2000 d->num_sec_device_types = s->num_sec_device_types; 2001 2002 d->p2p_group_idle = s->p2p_group_idle; 2003 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 2004 d->p2p_intra_bss = s->p2p_intra_bss; 2005 d->persistent_reconnect = s->persistent_reconnect; 2006 d->max_num_sta = s->max_num_sta; 2007 d->pbc_in_m1 = s->pbc_in_m1; 2008 d->ignore_old_scan_res = s->ignore_old_scan_res; 2009 d->beacon_int = s->beacon_int; 2010 d->dtim_period = s->dtim_period; 2011 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 2012 d->disassoc_low_ack = s->disassoc_low_ack; 2013 d->disable_scan_offload = s->disable_scan_offload; 2014 d->passive_scan = s->passive_scan; 2015 2016 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey && 2017 !d->wps_nfc_pw_from_config) { 2018 wpabuf_free(d->wps_nfc_dh_privkey); 2019 wpabuf_free(d->wps_nfc_dh_pubkey); 2020 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 2021 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 2022 } 2023 d->p2p_cli_probe = s->p2p_cli_probe; 2024 d->go_interworking = s->go_interworking; 2025 d->go_access_network_type = s->go_access_network_type; 2026 d->go_internet = s->go_internet; 2027 d->go_venue_group = s->go_venue_group; 2028 d->go_venue_type = s->go_venue_type; 2029 } 2030 2031 2032 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 2033 char *ifname, size_t len) 2034 { 2035 char *ifname_ptr = wpa_s->ifname; 2036 2037 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 2038 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 2039 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 2040 } 2041 2042 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 2043 if (os_strlen(ifname) >= IFNAMSIZ && 2044 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 2045 int res; 2046 2047 /* Try to avoid going over the IFNAMSIZ length limit */ 2048 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 2049 if (os_snprintf_error(len, res) && len) 2050 ifname[len - 1] = '\0'; 2051 } 2052 } 2053 2054 2055 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 2056 enum wpa_driver_if_type type) 2057 { 2058 char ifname[120], force_ifname[120]; 2059 2060 if (wpa_s->pending_interface_name[0]) { 2061 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 2062 "- skip creation of a new one"); 2063 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 2064 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 2065 "unknown?! ifname='%s'", 2066 wpa_s->pending_interface_name); 2067 return -1; 2068 } 2069 return 0; 2070 } 2071 2072 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 2073 force_ifname[0] = '\0'; 2074 2075 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 2076 ifname); 2077 wpa_s->p2p_group_idx++; 2078 2079 wpa_s->pending_interface_type = type; 2080 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 2081 wpa_s->pending_interface_addr, NULL) < 0) { 2082 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 2083 "interface"); 2084 return -1; 2085 } 2086 2087 if (wpa_s->conf->p2p_interface_random_mac_addr) { 2088 random_mac_addr(wpa_s->pending_interface_addr); 2089 wpa_printf(MSG_DEBUG, "P2P: Generate random MAC address " MACSTR 2090 " for the group", 2091 MAC2STR(wpa_s->pending_interface_addr)); 2092 } 2093 2094 if (force_ifname[0]) { 2095 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 2096 force_ifname); 2097 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 2098 sizeof(wpa_s->pending_interface_name)); 2099 } else 2100 os_strlcpy(wpa_s->pending_interface_name, ifname, 2101 sizeof(wpa_s->pending_interface_name)); 2102 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 2103 MACSTR, wpa_s->pending_interface_name, 2104 MAC2STR(wpa_s->pending_interface_addr)); 2105 2106 return 0; 2107 } 2108 2109 2110 static void wpas_p2p_remove_pending_group_interface( 2111 struct wpa_supplicant *wpa_s) 2112 { 2113 if (!wpa_s->pending_interface_name[0] || 2114 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2115 return; /* No pending virtual interface */ 2116 2117 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2118 wpa_s->pending_interface_name); 2119 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2120 wpa_s->pending_interface_name); 2121 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2122 wpa_s->pending_interface_name[0] = '\0'; 2123 wpa_s->global->pending_group_iface_for_p2ps = 0; 2124 } 2125 2126 2127 static struct wpa_supplicant * 2128 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2129 { 2130 struct wpa_interface iface; 2131 struct wpa_supplicant *group_wpa_s; 2132 2133 if (!wpa_s->pending_interface_name[0]) { 2134 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2135 if (!wpas_p2p_create_iface(wpa_s)) 2136 return NULL; 2137 /* 2138 * Something has forced us to remove the pending interface; try 2139 * to create a new one and hope for the best that we will get 2140 * the same local address. 2141 */ 2142 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2143 WPA_IF_P2P_CLIENT) < 0) 2144 return NULL; 2145 } 2146 2147 os_memset(&iface, 0, sizeof(iface)); 2148 iface.ifname = wpa_s->pending_interface_name; 2149 iface.driver = wpa_s->driver->name; 2150 if (wpa_s->conf->ctrl_interface == NULL && 2151 wpa_s->parent != wpa_s && 2152 wpa_s->p2p_mgmt && 2153 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2154 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2155 else 2156 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2157 iface.driver_param = wpa_s->conf->driver_param; 2158 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2159 if (group_wpa_s == NULL) { 2160 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2161 "wpa_supplicant interface"); 2162 return NULL; 2163 } 2164 wpa_s->pending_interface_name[0] = '\0'; 2165 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2166 P2P_GROUP_INTERFACE_CLIENT; 2167 wpa_s->global->p2p_group_formation = group_wpa_s; 2168 wpa_s->global->pending_group_iface_for_p2ps = 0; 2169 2170 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2171 2172 if (wpa_s->conf->p2p_interface_random_mac_addr) { 2173 if (wpa_drv_set_mac_addr(group_wpa_s, 2174 wpa_s->pending_interface_addr) < 0) { 2175 wpa_msg(group_wpa_s, MSG_INFO, 2176 "Failed to set random MAC address"); 2177 wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s, 2178 0); 2179 return NULL; 2180 } 2181 2182 if (wpa_supplicant_update_mac_addr(group_wpa_s) < 0) { 2183 wpa_msg(group_wpa_s, MSG_INFO, 2184 "Could not update MAC address information"); 2185 wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s, 2186 0); 2187 return NULL; 2188 } 2189 2190 wpa_printf(MSG_DEBUG, "P2P: Using random MAC address " MACSTR 2191 " for the group", 2192 MAC2STR(wpa_s->pending_interface_addr)); 2193 } 2194 2195 return group_wpa_s; 2196 } 2197 2198 2199 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2200 void *timeout_ctx) 2201 { 2202 struct wpa_supplicant *wpa_s = eloop_ctx; 2203 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2204 wpas_p2p_group_formation_failed(wpa_s, 0); 2205 } 2206 2207 2208 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2209 int already_deleted) 2210 { 2211 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2212 wpa_s->p2pdev, NULL); 2213 if (wpa_s->global->p2p) 2214 p2p_group_formation_failed(wpa_s->global->p2p); 2215 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2216 } 2217 2218 2219 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2220 { 2221 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2222 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2223 wpa_s->p2pdev, NULL); 2224 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2225 wpa_s->p2pdev, NULL); 2226 wpa_s->global->p2p_fail_on_wps_complete = 0; 2227 } 2228 2229 2230 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2231 { 2232 if (wpa_s->global->p2p_group_formation != wpa_s) 2233 return; 2234 /* Speed up group formation timeout since this cannot succeed */ 2235 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2236 wpa_s->p2pdev, NULL); 2237 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2238 wpa_s->p2pdev, NULL); 2239 } 2240 2241 2242 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2243 { 2244 struct wpa_supplicant *wpa_s = ctx; 2245 struct wpa_supplicant *group_wpa_s; 2246 2247 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2248 wpa_drv_cancel_remain_on_channel(wpa_s); 2249 wpa_s->off_channel_freq = 0; 2250 wpa_s->roc_waiting_drv_freq = 0; 2251 } 2252 2253 if (res->status) { 2254 wpa_msg_global(wpa_s, MSG_INFO, 2255 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2256 res->status); 2257 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2258 wpas_p2p_remove_pending_group_interface(wpa_s); 2259 return; 2260 } 2261 2262 if (!res->role_go) { 2263 /* Inform driver of the operating channel of GO. */ 2264 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2265 } 2266 2267 if (wpa_s->p2p_go_ht40) 2268 res->ht40 = 1; 2269 if (wpa_s->p2p_go_vht) 2270 res->vht = 1; 2271 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2272 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2273 2274 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2275 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2276 " wps_method=%s", 2277 res->role_go ? "GO" : "client", res->freq, res->ht40, 2278 MAC2STR(res->peer_device_addr), 2279 MAC2STR(res->peer_interface_addr), 2280 p2p_wps_method_text(res->wps_method)); 2281 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2282 2283 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2284 struct wpa_ssid *ssid; 2285 ssid = wpa_config_get_network(wpa_s->conf, 2286 wpa_s->p2p_persistent_id); 2287 if (ssid && ssid->disabled == 2 && 2288 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2289 size_t len = os_strlen(ssid->passphrase); 2290 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2291 "on requested persistent group"); 2292 os_memcpy(res->passphrase, ssid->passphrase, len); 2293 res->passphrase[len] = '\0'; 2294 } 2295 } 2296 2297 if (wpa_s->create_p2p_iface) { 2298 group_wpa_s = 2299 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2300 if (group_wpa_s == NULL) { 2301 wpas_p2p_remove_pending_group_interface(wpa_s); 2302 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2303 wpa_s, NULL); 2304 wpas_p2p_group_formation_failed(wpa_s, 1); 2305 return; 2306 } 2307 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2308 wpa_s->pending_interface_name[0] = '\0'; 2309 } else { 2310 group_wpa_s = wpa_s->parent; 2311 wpa_s->global->p2p_group_formation = group_wpa_s; 2312 if (group_wpa_s != wpa_s) 2313 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2314 } 2315 2316 group_wpa_s->p2p_in_provisioning = 1; 2317 group_wpa_s->p2pdev = wpa_s; 2318 if (group_wpa_s != wpa_s) { 2319 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2320 sizeof(group_wpa_s->p2p_pin)); 2321 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2322 } 2323 if (res->role_go) { 2324 wpas_start_wps_go(group_wpa_s, res, 1); 2325 } else { 2326 os_get_reltime(&group_wpa_s->scan_min_time); 2327 wpas_start_wps_enrollee(group_wpa_s, res); 2328 } 2329 2330 wpa_s->p2p_long_listen = 0; 2331 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2332 2333 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2334 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2335 (res->peer_config_timeout % 100) * 10000, 2336 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2337 } 2338 2339 2340 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2341 u8 go_intent) 2342 { 2343 struct wpa_supplicant *wpa_s = ctx; 2344 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2345 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2346 dev_passwd_id, go_intent); 2347 2348 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2349 } 2350 2351 2352 static void wpas_dev_found(void *ctx, const u8 *addr, 2353 const struct p2p_peer_info *info, 2354 int new_device) 2355 { 2356 #ifndef CONFIG_NO_STDOUT_DEBUG 2357 struct wpa_supplicant *wpa_s = ctx; 2358 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2359 char *wfd_dev_info_hex = NULL; 2360 2361 #ifdef CONFIG_WIFI_DISPLAY 2362 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2363 WFD_SUBELEM_DEVICE_INFO); 2364 #endif /* CONFIG_WIFI_DISPLAY */ 2365 2366 if (info->p2ps_instance) { 2367 char str[256]; 2368 const u8 *buf = wpabuf_head(info->p2ps_instance); 2369 size_t len = wpabuf_len(info->p2ps_instance); 2370 2371 while (len) { 2372 u32 id; 2373 u16 methods; 2374 u8 str_len; 2375 2376 if (len < 4 + 2 + 1) 2377 break; 2378 id = WPA_GET_LE32(buf); 2379 buf += sizeof(u32); 2380 methods = WPA_GET_BE16(buf); 2381 buf += sizeof(u16); 2382 str_len = *buf++; 2383 if (str_len > len - 4 - 2 - 1) 2384 break; 2385 os_memcpy(str, buf, str_len); 2386 str[str_len] = '\0'; 2387 buf += str_len; 2388 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2389 2390 wpa_msg_global(wpa_s, MSG_INFO, 2391 P2P_EVENT_DEVICE_FOUND MACSTR 2392 " p2p_dev_addr=" MACSTR 2393 " pri_dev_type=%s name='%s'" 2394 " config_methods=0x%x" 2395 " dev_capab=0x%x" 2396 " group_capab=0x%x" 2397 " adv_id=%x asp_svc=%s%s", 2398 MAC2STR(addr), 2399 MAC2STR(info->p2p_device_addr), 2400 wps_dev_type_bin2str( 2401 info->pri_dev_type, 2402 devtype, sizeof(devtype)), 2403 info->device_name, methods, 2404 info->dev_capab, info->group_capab, 2405 id, str, 2406 info->vendor_elems ? 2407 " vendor_elems=1" : ""); 2408 } 2409 goto done; 2410 } 2411 2412 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2413 " p2p_dev_addr=" MACSTR 2414 " pri_dev_type=%s name='%s' config_methods=0x%x " 2415 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2416 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2417 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2418 sizeof(devtype)), 2419 info->device_name, info->config_methods, 2420 info->dev_capab, info->group_capab, 2421 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2422 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2423 info->vendor_elems ? " vendor_elems=1" : "", 2424 new_device); 2425 2426 done: 2427 os_free(wfd_dev_info_hex); 2428 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2429 2430 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2431 } 2432 2433 2434 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2435 { 2436 struct wpa_supplicant *wpa_s = ctx; 2437 2438 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2439 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2440 2441 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2442 } 2443 2444 2445 static void wpas_find_stopped(void *ctx) 2446 { 2447 struct wpa_supplicant *wpa_s = ctx; 2448 2449 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0) 2450 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed"); 2451 2452 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2453 wpas_notify_p2p_find_stopped(wpa_s); 2454 } 2455 2456 2457 struct wpas_p2p_listen_work { 2458 unsigned int freq; 2459 unsigned int duration; 2460 struct wpabuf *probe_resp_ie; 2461 }; 2462 2463 2464 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2465 { 2466 if (lwork == NULL) 2467 return; 2468 wpabuf_free(lwork->probe_resp_ie); 2469 os_free(lwork); 2470 } 2471 2472 2473 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2474 { 2475 struct wpas_p2p_listen_work *lwork; 2476 2477 if (!wpa_s->p2p_listen_work) 2478 return; 2479 2480 lwork = wpa_s->p2p_listen_work->ctx; 2481 wpas_p2p_listen_work_free(lwork); 2482 radio_work_done(wpa_s->p2p_listen_work); 2483 wpa_s->p2p_listen_work = NULL; 2484 } 2485 2486 2487 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2488 { 2489 struct wpa_supplicant *wpa_s = work->wpa_s; 2490 struct wpas_p2p_listen_work *lwork = work->ctx; 2491 unsigned int duration; 2492 2493 if (deinit) { 2494 if (work->started) { 2495 wpa_s->p2p_listen_work = NULL; 2496 wpas_stop_listen(wpa_s); 2497 } 2498 wpas_p2p_listen_work_free(lwork); 2499 return; 2500 } 2501 2502 wpa_s->p2p_listen_work = work; 2503 2504 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2505 2506 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2507 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2508 "report received Probe Request frames"); 2509 wpas_p2p_listen_work_done(wpa_s); 2510 return; 2511 } 2512 2513 wpa_s->pending_listen_freq = lwork->freq; 2514 wpa_s->pending_listen_duration = lwork->duration; 2515 2516 duration = lwork->duration; 2517 #ifdef CONFIG_TESTING_OPTIONS 2518 if (wpa_s->extra_roc_dur) { 2519 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2520 duration, duration + wpa_s->extra_roc_dur); 2521 duration += wpa_s->extra_roc_dur; 2522 } 2523 #endif /* CONFIG_TESTING_OPTIONS */ 2524 2525 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2526 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2527 "to remain on channel (%u MHz) for Listen " 2528 "state", lwork->freq); 2529 wpas_p2p_listen_work_done(wpa_s); 2530 wpa_s->pending_listen_freq = 0; 2531 return; 2532 } 2533 wpa_s->off_channel_freq = 0; 2534 wpa_s->roc_waiting_drv_freq = lwork->freq; 2535 } 2536 2537 2538 static int wpas_start_listen(void *ctx, unsigned int freq, 2539 unsigned int duration, 2540 const struct wpabuf *probe_resp_ie) 2541 { 2542 struct wpa_supplicant *wpa_s = ctx; 2543 struct wpas_p2p_listen_work *lwork; 2544 2545 if (wpa_s->p2p_listen_work) { 2546 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2547 return -1; 2548 } 2549 2550 lwork = os_zalloc(sizeof(*lwork)); 2551 if (lwork == NULL) 2552 return -1; 2553 lwork->freq = freq; 2554 lwork->duration = duration; 2555 if (probe_resp_ie) { 2556 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2557 if (lwork->probe_resp_ie == NULL) { 2558 wpas_p2p_listen_work_free(lwork); 2559 return -1; 2560 } 2561 } 2562 2563 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2564 lwork) < 0) { 2565 wpas_p2p_listen_work_free(lwork); 2566 return -1; 2567 } 2568 2569 return 0; 2570 } 2571 2572 2573 static void wpas_stop_listen(void *ctx) 2574 { 2575 struct wpa_supplicant *wpa_s = ctx; 2576 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2577 wpa_drv_cancel_remain_on_channel(wpa_s); 2578 wpa_s->off_channel_freq = 0; 2579 wpa_s->roc_waiting_drv_freq = 0; 2580 } 2581 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2582 2583 /* 2584 * Don't cancel Probe Request RX reporting for a connected P2P Client 2585 * handling Probe Request frames. 2586 */ 2587 if (!wpa_s->p2p_cli_probe) 2588 wpa_drv_probe_req_report(wpa_s, 0); 2589 2590 wpas_p2p_listen_work_done(wpa_s); 2591 } 2592 2593 2594 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2595 unsigned int freq) 2596 { 2597 struct wpa_supplicant *wpa_s = ctx; 2598 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2599 freq); 2600 } 2601 2602 2603 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2604 const u8 *peer, const char *params, 2605 unsigned int generated_pin) 2606 { 2607 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2608 " %08d%s", MAC2STR(peer), generated_pin, params); 2609 } 2610 2611 2612 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2613 const u8 *peer, const char *params) 2614 { 2615 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2616 "%s", MAC2STR(peer), params); 2617 } 2618 2619 2620 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2621 const u8 *dev_addr, const u8 *pri_dev_type, 2622 const char *dev_name, u16 supp_config_methods, 2623 u8 dev_capab, u8 group_capab, const u8 *group_id, 2624 size_t group_id_len) 2625 { 2626 struct wpa_supplicant *wpa_s = ctx; 2627 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2628 char params[300]; 2629 u8 empty_dev_type[8]; 2630 unsigned int generated_pin = 0; 2631 struct wpa_supplicant *group = NULL; 2632 int res; 2633 2634 if (group_id) { 2635 for (group = wpa_s->global->ifaces; group; group = group->next) 2636 { 2637 struct wpa_ssid *s = group->current_ssid; 2638 if (s != NULL && 2639 s->mode == WPAS_MODE_P2P_GO && 2640 group_id_len - ETH_ALEN == s->ssid_len && 2641 os_memcmp(group_id + ETH_ALEN, s->ssid, 2642 s->ssid_len) == 0) 2643 break; 2644 } 2645 } 2646 2647 if (pri_dev_type == NULL) { 2648 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2649 pri_dev_type = empty_dev_type; 2650 } 2651 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2652 " pri_dev_type=%s name='%s' config_methods=0x%x " 2653 "dev_capab=0x%x group_capab=0x%x%s%s", 2654 MAC2STR(dev_addr), 2655 wps_dev_type_bin2str(pri_dev_type, devtype, 2656 sizeof(devtype)), 2657 dev_name, supp_config_methods, dev_capab, group_capab, 2658 group ? " group=" : "", 2659 group ? group->ifname : ""); 2660 if (os_snprintf_error(sizeof(params), res)) 2661 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2662 params[sizeof(params) - 1] = '\0'; 2663 2664 if (config_methods & WPS_CONFIG_DISPLAY) { 2665 if (wps_generate_pin(&generated_pin) < 0) { 2666 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2667 wpas_notify_p2p_provision_discovery( 2668 wpa_s, peer, 0 /* response */, 2669 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2670 return; 2671 } 2672 wpas_prov_disc_local_display(wpa_s, peer, params, 2673 generated_pin); 2674 } else if (config_methods & WPS_CONFIG_KEYPAD) 2675 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2676 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2677 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2678 MACSTR "%s", MAC2STR(peer), params); 2679 2680 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2681 P2P_PROV_DISC_SUCCESS, 2682 config_methods, generated_pin); 2683 } 2684 2685 2686 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2687 { 2688 struct wpa_supplicant *wpa_s = ctx; 2689 unsigned int generated_pin = 0; 2690 char params[20]; 2691 2692 if (wpa_s->pending_pd_before_join && 2693 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2694 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2695 wpa_s->pending_pd_before_join = 0; 2696 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2697 "join-existing-group operation"); 2698 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2699 return; 2700 } 2701 2702 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2703 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2704 int res; 2705 2706 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2707 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2708 if (os_snprintf_error(sizeof(params), res)) 2709 params[sizeof(params) - 1] = '\0'; 2710 } else 2711 params[0] = '\0'; 2712 2713 if (config_methods & WPS_CONFIG_DISPLAY) 2714 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2715 else if (config_methods & WPS_CONFIG_KEYPAD) { 2716 if (wps_generate_pin(&generated_pin) < 0) { 2717 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2718 wpas_notify_p2p_provision_discovery( 2719 wpa_s, peer, 0 /* response */, 2720 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2721 return; 2722 } 2723 wpas_prov_disc_local_display(wpa_s, peer, params, 2724 generated_pin); 2725 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2726 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2727 MACSTR "%s", MAC2STR(peer), params); 2728 2729 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2730 P2P_PROV_DISC_SUCCESS, 2731 config_methods, generated_pin); 2732 } 2733 2734 2735 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2736 enum p2p_prov_disc_status status, 2737 u32 adv_id, const u8 *adv_mac, 2738 const char *deferred_session_resp) 2739 { 2740 struct wpa_supplicant *wpa_s = ctx; 2741 2742 if (wpa_s->p2p_fallback_to_go_neg) { 2743 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2744 "failed - fall back to GO Negotiation"); 2745 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 2746 P2P_EVENT_FALLBACK_TO_GO_NEG 2747 "reason=PD-failed"); 2748 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2749 return; 2750 } 2751 2752 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2753 wpa_s->pending_pd_before_join = 0; 2754 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2755 "join-existing-group operation (no ACK for PD " 2756 "Req attempts)"); 2757 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2758 return; 2759 } 2760 2761 if (adv_id && adv_mac && deferred_session_resp) { 2762 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2763 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2764 " deferred_session_resp='%s'", 2765 MAC2STR(peer), status, adv_id, 2766 deferred_session_resp); 2767 } else if (adv_id && adv_mac) { 2768 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2769 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2770 MAC2STR(peer), status, adv_id); 2771 } else { 2772 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2773 " p2p_dev_addr=" MACSTR " status=%d", 2774 MAC2STR(peer), status); 2775 } 2776 2777 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2778 status, 0, 0); 2779 } 2780 2781 2782 static int freq_included(struct wpa_supplicant *wpa_s, 2783 const struct p2p_channels *channels, 2784 unsigned int freq) 2785 { 2786 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2787 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2788 return 1; 2789 return 0; 2790 } 2791 2792 2793 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2794 { 2795 unsigned int num = P2P_MAX_CHANNELS; 2796 int *common_freqs; 2797 int ret; 2798 2799 p2p_go_dump_common_freqs(wpa_s); 2800 common_freqs = os_calloc(num, sizeof(int)); 2801 if (!common_freqs) 2802 return; 2803 2804 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2805 if (ret < 0) { 2806 wpa_dbg(wpa_s, MSG_DEBUG, 2807 "P2P: Failed to get group common freqs"); 2808 os_free(common_freqs); 2809 return; 2810 } 2811 2812 os_free(wpa_s->p2p_group_common_freqs); 2813 wpa_s->p2p_group_common_freqs = common_freqs; 2814 wpa_s->p2p_group_common_freqs_num = num; 2815 p2p_go_dump_common_freqs(wpa_s); 2816 } 2817 2818 2819 /* 2820 * Check if the given frequency is one of the possible operating frequencies 2821 * set after the completion of the GO Negotiation. 2822 */ 2823 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2824 { 2825 unsigned int i; 2826 2827 p2p_go_dump_common_freqs(wpa_s); 2828 2829 /* assume no restrictions */ 2830 if (!wpa_s->p2p_group_common_freqs_num) 2831 return 1; 2832 2833 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2834 if (wpa_s->p2p_group_common_freqs[i] == freq) 2835 return 1; 2836 } 2837 return 0; 2838 } 2839 2840 2841 static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2842 struct sta_info *sta, void *ctx) 2843 { 2844 int *ecsa_support = ctx; 2845 2846 *ecsa_support &= sta->ecsa_supported; 2847 2848 return 0; 2849 } 2850 2851 2852 /* Check if all the peers support eCSA */ 2853 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2854 { 2855 int ecsa_support = 1; 2856 2857 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2858 &ecsa_support); 2859 2860 return ecsa_support; 2861 } 2862 2863 2864 /** 2865 * Pick the best frequency to use from all the currently used frequencies. 2866 */ 2867 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2868 struct wpa_used_freq_data *freqs, 2869 unsigned int num) 2870 { 2871 unsigned int i, c; 2872 2873 /* find a candidate freq that is supported by P2P */ 2874 for (c = 0; c < num; c++) 2875 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2876 break; 2877 2878 if (c == num) 2879 return 0; 2880 2881 /* once we have a candidate, try to find a 'better' one */ 2882 for (i = c + 1; i < num; i++) { 2883 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2884 continue; 2885 2886 /* 2887 * 1. Infrastructure station interfaces have higher preference. 2888 * 2. P2P Clients have higher preference. 2889 * 3. All others. 2890 */ 2891 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2892 c = i; 2893 break; 2894 } 2895 2896 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2897 c = i; 2898 } 2899 return freqs[c].freq; 2900 } 2901 2902 2903 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2904 const u8 *go_dev_addr, const u8 *ssid, 2905 size_t ssid_len, int *go, u8 *group_bssid, 2906 int *force_freq, int persistent_group, 2907 const struct p2p_channels *channels, 2908 int dev_pw_id) 2909 { 2910 struct wpa_supplicant *wpa_s = ctx; 2911 struct wpa_ssid *s; 2912 struct wpa_used_freq_data *freqs; 2913 struct wpa_supplicant *grp; 2914 int best_freq; 2915 2916 if (!persistent_group) { 2917 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2918 " to join an active group (SSID: %s)", 2919 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2920 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2921 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2922 == 0 || 2923 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2924 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2925 "authorized invitation"); 2926 goto accept_inv; 2927 } 2928 2929 #ifdef CONFIG_WPS_NFC 2930 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2931 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2932 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2933 wpa_s->p2p_wps_method = WPS_NFC; 2934 wpa_s->pending_join_wps_method = WPS_NFC; 2935 os_memcpy(wpa_s->pending_join_dev_addr, 2936 go_dev_addr, ETH_ALEN); 2937 os_memcpy(wpa_s->pending_join_iface_addr, 2938 bssid, ETH_ALEN); 2939 goto accept_inv; 2940 } 2941 #endif /* CONFIG_WPS_NFC */ 2942 2943 /* 2944 * Do not accept the invitation automatically; notify user and 2945 * request approval. 2946 */ 2947 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2948 } 2949 2950 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2951 if (grp) { 2952 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2953 "running persistent group"); 2954 if (*go) 2955 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2956 goto accept_inv; 2957 } 2958 2959 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2960 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2961 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2962 "invitation to re-invoke a persistent group"); 2963 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2964 } else if (!wpa_s->conf->persistent_reconnect) 2965 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2966 2967 for (s = wpa_s->conf->ssid; s; s = s->next) { 2968 if (s->disabled == 2 && 2969 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2970 s->ssid_len == ssid_len && 2971 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2972 break; 2973 } 2974 2975 if (!s) { 2976 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2977 " requested reinvocation of an unknown group", 2978 MAC2STR(sa)); 2979 return P2P_SC_FAIL_UNKNOWN_GROUP; 2980 } 2981 2982 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2983 *go = 1; 2984 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2985 wpa_printf(MSG_DEBUG, "P2P: The only available " 2986 "interface is already in use - reject " 2987 "invitation"); 2988 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2989 } 2990 if (wpa_s->p2p_mgmt) 2991 os_memcpy(group_bssid, wpa_s->parent->own_addr, 2992 ETH_ALEN); 2993 else 2994 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2995 } else if (s->mode == WPAS_MODE_P2P_GO) { 2996 *go = 1; 2997 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2998 { 2999 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3000 "interface address for the group"); 3001 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 3002 } 3003 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 3004 ETH_ALEN); 3005 } 3006 3007 accept_inv: 3008 wpas_p2p_set_own_freq_preference(wpa_s, 0); 3009 3010 best_freq = 0; 3011 freqs = os_calloc(wpa_s->num_multichan_concurrent, 3012 sizeof(struct wpa_used_freq_data)); 3013 if (freqs) { 3014 int num_channels = wpa_s->num_multichan_concurrent; 3015 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 3016 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 3017 os_free(freqs); 3018 } 3019 3020 /* Get one of the frequencies currently in use */ 3021 if (best_freq > 0) { 3022 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 3023 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 3024 3025 if (wpa_s->num_multichan_concurrent < 2 || 3026 wpas_p2p_num_unused_channels(wpa_s) < 1) { 3027 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 3028 *force_freq = best_freq; 3029 } 3030 } 3031 3032 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 3033 wpas_p2p_num_unused_channels(wpa_s) > 0) { 3034 if (*go == 0) { 3035 /* We are the client */ 3036 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 3037 "running a GO but we are capable of MCC, " 3038 "figure out the best channel to use"); 3039 *force_freq = 0; 3040 } else if (!freq_included(wpa_s, channels, *force_freq)) { 3041 /* We are the GO, and *force_freq is not in the 3042 * intersection */ 3043 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 3044 "in intersection but we are capable of MCC, " 3045 "figure out the best channel to use", 3046 *force_freq); 3047 *force_freq = 0; 3048 } 3049 } 3050 3051 return P2P_SC_SUCCESS; 3052 } 3053 3054 3055 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3056 const u8 *ssid, size_t ssid_len, 3057 const u8 *go_dev_addr, u8 status, 3058 int op_freq) 3059 { 3060 struct wpa_supplicant *wpa_s = ctx; 3061 struct wpa_ssid *s; 3062 3063 for (s = wpa_s->conf->ssid; s; s = s->next) { 3064 if (s->disabled == 2 && 3065 s->ssid_len == ssid_len && 3066 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3067 break; 3068 } 3069 3070 if (status == P2P_SC_SUCCESS) { 3071 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3072 " was accepted; op_freq=%d MHz, SSID=%s", 3073 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3074 if (s) { 3075 int go = s->mode == WPAS_MODE_P2P_GO; 3076 if (go) { 3077 wpa_msg_global(wpa_s, MSG_INFO, 3078 P2P_EVENT_INVITATION_ACCEPTED 3079 "sa=" MACSTR 3080 " persistent=%d freq=%d", 3081 MAC2STR(sa), s->id, op_freq); 3082 } else { 3083 wpa_msg_global(wpa_s, MSG_INFO, 3084 P2P_EVENT_INVITATION_ACCEPTED 3085 "sa=" MACSTR 3086 " persistent=%d", 3087 MAC2STR(sa), s->id); 3088 } 3089 wpas_p2p_group_add_persistent( 3090 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, 0, NULL, 3091 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 3092 1); 3093 } else if (bssid) { 3094 wpa_s->user_initiated_pd = 0; 3095 wpa_msg_global(wpa_s, MSG_INFO, 3096 P2P_EVENT_INVITATION_ACCEPTED 3097 "sa=" MACSTR " go_dev_addr=" MACSTR 3098 " bssid=" MACSTR " unknown-network", 3099 MAC2STR(sa), MAC2STR(go_dev_addr), 3100 MAC2STR(bssid)); 3101 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3102 wpa_s->p2p_wps_method, 0, op_freq, 3103 ssid, ssid_len); 3104 } 3105 return; 3106 } 3107 3108 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3109 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3110 " was rejected (status %u)", MAC2STR(sa), status); 3111 return; 3112 } 3113 3114 if (!s) { 3115 if (bssid) { 3116 wpa_msg_global(wpa_s, MSG_INFO, 3117 P2P_EVENT_INVITATION_RECEIVED 3118 "sa=" MACSTR " go_dev_addr=" MACSTR 3119 " bssid=" MACSTR " unknown-network", 3120 MAC2STR(sa), MAC2STR(go_dev_addr), 3121 MAC2STR(bssid)); 3122 } else { 3123 wpa_msg_global(wpa_s, MSG_INFO, 3124 P2P_EVENT_INVITATION_RECEIVED 3125 "sa=" MACSTR " go_dev_addr=" MACSTR 3126 " unknown-network", 3127 MAC2STR(sa), MAC2STR(go_dev_addr)); 3128 } 3129 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3130 bssid, 0, op_freq); 3131 return; 3132 } 3133 3134 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3135 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3136 "sa=" MACSTR " persistent=%d freq=%d", 3137 MAC2STR(sa), s->id, op_freq); 3138 } else { 3139 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3140 "sa=" MACSTR " persistent=%d", 3141 MAC2STR(sa), s->id); 3142 } 3143 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3144 s->id, op_freq); 3145 } 3146 3147 3148 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3149 struct wpa_ssid *ssid, 3150 const u8 *peer, int inv) 3151 { 3152 size_t i; 3153 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3154 3155 if (ssid == NULL) 3156 return; 3157 3158 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3159 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3160 ETH_ALEN) == 0) 3161 break; 3162 } 3163 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3164 if (ssid->mode != WPAS_MODE_P2P_GO && 3165 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3166 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3167 "due to invitation result", ssid->id); 3168 wpas_notify_network_removed(wpa_s, ssid); 3169 wpa_config_remove_network(wpa_s->conf, ssid->id); 3170 return; 3171 } 3172 return; /* Peer not found in client list */ 3173 } 3174 3175 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3176 "group %d client list%s", 3177 MAC2STR(peer), ssid->id, 3178 inv ? " due to invitation result" : ""); 3179 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3180 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3181 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3182 ssid->num_p2p_clients--; 3183 if (p2p_wpa_s->conf->update_config && 3184 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3185 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3186 } 3187 3188 3189 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3190 const u8 *peer) 3191 { 3192 struct wpa_ssid *ssid; 3193 3194 wpa_s = wpa_s->global->p2p_invite_group; 3195 if (wpa_s == NULL) 3196 return; /* No known invitation group */ 3197 ssid = wpa_s->current_ssid; 3198 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3199 !ssid->p2p_persistent_group) 3200 return; /* Not operating as a GO in persistent group */ 3201 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer, 3202 ssid->ssid, ssid->ssid_len); 3203 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3204 } 3205 3206 3207 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3208 const struct p2p_channels *channels, 3209 const u8 *peer, int neg_freq, 3210 int peer_oper_freq) 3211 { 3212 struct wpa_supplicant *wpa_s = ctx; 3213 struct wpa_ssid *ssid; 3214 int freq; 3215 3216 if (bssid) { 3217 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3218 "status=%d " MACSTR, 3219 status, MAC2STR(bssid)); 3220 } else { 3221 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3222 "status=%d ", status); 3223 } 3224 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3225 3226 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3227 status, MAC2STR(peer)); 3228 if (wpa_s->pending_invite_ssid_id == -1) { 3229 struct wpa_supplicant *group_if = 3230 wpa_s->global->p2p_invite_group; 3231 3232 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3233 wpas_remove_persistent_client(wpa_s, peer); 3234 3235 /* 3236 * Invitation to an active group. If this is successful and we 3237 * are the GO, set the client wait to postpone some concurrent 3238 * operations and to allow provisioning and connection to happen 3239 * more quickly. 3240 */ 3241 if (status == P2P_SC_SUCCESS && 3242 group_if && group_if->current_ssid && 3243 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3244 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3245 #ifdef CONFIG_TESTING_OPTIONS 3246 if (group_if->p2p_go_csa_on_inv) { 3247 wpa_printf(MSG_DEBUG, 3248 "Testing: force P2P GO CSA after invitation"); 3249 eloop_cancel_timeout( 3250 wpas_p2p_reconsider_moving_go, 3251 wpa_s, NULL); 3252 eloop_register_timeout( 3253 0, 50000, 3254 wpas_p2p_reconsider_moving_go, 3255 wpa_s, NULL); 3256 } 3257 #endif /* CONFIG_TESTING_OPTIONS */ 3258 } 3259 return; 3260 } 3261 3262 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3263 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3264 "invitation exchange to indicate readiness for " 3265 "re-invocation"); 3266 } 3267 3268 if (status != P2P_SC_SUCCESS) { 3269 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3270 ssid = wpa_config_get_network( 3271 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3272 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3273 } 3274 wpas_p2p_remove_pending_group_interface(wpa_s); 3275 return; 3276 } 3277 3278 ssid = wpa_config_get_network(wpa_s->conf, 3279 wpa_s->pending_invite_ssid_id); 3280 if (ssid == NULL) { 3281 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3282 "data matching with invitation"); 3283 return; 3284 } 3285 3286 /* 3287 * The peer could have missed our ctrl::ack frame for Invitation 3288 * Response and continue retransmitting the frame. To reduce the 3289 * likelihood of the peer not getting successful TX status for the 3290 * Invitation Response frame, wait a short time here before starting 3291 * the persistent group so that we will remain on the current channel to 3292 * acknowledge any possible retransmission from the peer. 3293 */ 3294 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3295 "starting persistent group"); 3296 os_sleep(0, 50000); 3297 3298 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3299 freq_included(wpa_s, channels, neg_freq)) 3300 freq = neg_freq; 3301 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3302 freq_included(wpa_s, channels, peer_oper_freq)) 3303 freq = peer_oper_freq; 3304 else 3305 freq = 0; 3306 3307 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3308 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3309 wpas_p2p_group_add_persistent(wpa_s, ssid, 3310 ssid->mode == WPAS_MODE_P2P_GO, 3311 wpa_s->p2p_persistent_go_freq, 3312 freq, 3313 wpa_s->p2p_go_vht_center_freq2, 3314 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3315 wpa_s->p2p_go_max_oper_chwidth, 3316 wpa_s->p2p_go_he, 3317 channels, 3318 ssid->mode == WPAS_MODE_P2P_GO ? 3319 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3320 0, 1); 3321 } 3322 3323 3324 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3325 unsigned int freq) 3326 { 3327 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3328 return 1; 3329 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3330 } 3331 3332 3333 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3334 { 3335 reg->channel[reg->channels] = chan; 3336 reg->channels++; 3337 } 3338 3339 3340 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3341 struct p2p_channels *chan, 3342 struct p2p_channels *cli_chan) 3343 { 3344 int i, cla = 0; 3345 3346 wpa_s->global->p2p_24ghz_social_channels = 1; 3347 3348 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3349 3350 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3351 "band"); 3352 3353 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3354 chan->reg_class[cla].reg_class = 81; 3355 chan->reg_class[cla].channels = 0; 3356 for (i = 0; i < 11; i++) { 3357 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3358 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3359 } 3360 if (chan->reg_class[cla].channels) 3361 cla++; 3362 3363 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3364 "band"); 3365 3366 /* Operating class 115 - 5 GHz, channels 36-48 */ 3367 chan->reg_class[cla].reg_class = 115; 3368 chan->reg_class[cla].channels = 0; 3369 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3370 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3371 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3372 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3373 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3374 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3375 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3376 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3377 if (chan->reg_class[cla].channels) 3378 cla++; 3379 3380 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3381 "band"); 3382 3383 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3384 chan->reg_class[cla].reg_class = 124; 3385 chan->reg_class[cla].channels = 0; 3386 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3387 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3388 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3389 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3390 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3391 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3392 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3393 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3394 if (chan->reg_class[cla].channels) 3395 cla++; 3396 3397 chan->reg_classes = cla; 3398 return 0; 3399 } 3400 3401 3402 static int has_channel(struct wpa_global *global, 3403 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3404 { 3405 int i; 3406 unsigned int freq; 3407 3408 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3409 chan * 5; 3410 if (wpas_p2p_disallowed_freq(global, freq)) 3411 return NOT_ALLOWED; 3412 3413 for (i = 0; i < mode->num_channels; i++) { 3414 if (mode->channels[i].chan == chan) { 3415 if (flags) 3416 *flags = mode->channels[i].flag; 3417 if (mode->channels[i].flag & 3418 (HOSTAPD_CHAN_DISABLED | 3419 HOSTAPD_CHAN_RADAR)) 3420 return NOT_ALLOWED; 3421 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3422 return NO_IR; 3423 return ALLOWED; 3424 } 3425 } 3426 3427 return NOT_ALLOWED; 3428 } 3429 3430 3431 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3432 struct hostapd_hw_modes *mode, 3433 u8 channel) 3434 { 3435 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3436 size_t i; 3437 3438 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3439 return 0; 3440 3441 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3442 /* 3443 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3444 * so the center channel is 6 channels away from the start/end. 3445 */ 3446 if (channel >= center_channels[i] - 6 && 3447 channel <= center_channels[i] + 6) 3448 return center_channels[i]; 3449 3450 return 0; 3451 } 3452 3453 3454 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3455 struct hostapd_hw_modes *mode, 3456 u8 channel, u8 bw) 3457 { 3458 u8 center_chan; 3459 int i, flags; 3460 enum chan_allowed res, ret = ALLOWED; 3461 3462 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3463 if (!center_chan) 3464 return NOT_ALLOWED; 3465 if (center_chan >= 58 && center_chan <= 138) 3466 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3467 3468 /* check all the channels are available */ 3469 for (i = 0; i < 4; i++) { 3470 int adj_chan = center_chan - 6 + i * 4; 3471 3472 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3473 if (res == NOT_ALLOWED) 3474 return NOT_ALLOWED; 3475 if (res == NO_IR) 3476 ret = NO_IR; 3477 3478 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3479 return NOT_ALLOWED; 3480 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3481 return NOT_ALLOWED; 3482 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3483 return NOT_ALLOWED; 3484 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3485 return NOT_ALLOWED; 3486 } 3487 3488 return ret; 3489 } 3490 3491 3492 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3493 struct hostapd_hw_modes *mode, 3494 u8 channel) 3495 { 3496 u8 center_channels[] = { 50, 114 }; 3497 unsigned int i; 3498 3499 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3500 return 0; 3501 3502 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3503 /* 3504 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3505 * so the center channel is 14 channels away from the start/end. 3506 */ 3507 if (channel >= center_channels[i] - 14 && 3508 channel <= center_channels[i] + 14) 3509 return center_channels[i]; 3510 3511 return 0; 3512 } 3513 3514 3515 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3516 struct hostapd_hw_modes *mode, 3517 u8 channel, u8 bw) 3518 { 3519 u8 center_chan; 3520 int i, flags; 3521 enum chan_allowed res, ret = ALLOWED; 3522 3523 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3524 if (!center_chan) 3525 return NOT_ALLOWED; 3526 /* VHT 160 MHz uses DFS channels in most countries. */ 3527 3528 /* Check all the channels are available */ 3529 for (i = 0; i < 8; i++) { 3530 int adj_chan = center_chan - 14 + i * 4; 3531 3532 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3533 if (res == NOT_ALLOWED) 3534 return NOT_ALLOWED; 3535 3536 if (res == NO_IR) 3537 ret = NO_IR; 3538 3539 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3540 return NOT_ALLOWED; 3541 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3542 return NOT_ALLOWED; 3543 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3544 return NOT_ALLOWED; 3545 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3546 return NOT_ALLOWED; 3547 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3548 return NOT_ALLOWED; 3549 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3550 return NOT_ALLOWED; 3551 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3552 return NOT_ALLOWED; 3553 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3554 return NOT_ALLOWED; 3555 } 3556 3557 return ret; 3558 } 3559 3560 3561 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3562 struct hostapd_hw_modes *mode, 3563 u8 channel, u8 bw) 3564 { 3565 int flag = 0; 3566 enum chan_allowed res, res2; 3567 3568 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3569 if (bw == BW40MINUS) { 3570 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3571 return NOT_ALLOWED; 3572 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3573 } else if (bw == BW40PLUS) { 3574 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3575 return NOT_ALLOWED; 3576 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3577 } else if (bw == BW80) { 3578 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3579 } else if (bw == BW160) { 3580 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3581 } 3582 3583 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3584 return NOT_ALLOWED; 3585 if (res == NO_IR || res2 == NO_IR) 3586 return NO_IR; 3587 return res; 3588 } 3589 3590 3591 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3592 struct p2p_channels *chan, 3593 struct p2p_channels *cli_chan) 3594 { 3595 struct hostapd_hw_modes *mode; 3596 int cla, op, cli_cla; 3597 3598 if (wpa_s->hw.modes == NULL) { 3599 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3600 "of all supported channels; assume dualband " 3601 "support"); 3602 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3603 } 3604 3605 cla = cli_cla = 0; 3606 3607 for (op = 0; global_op_class[op].op_class; op++) { 3608 const struct oper_class_map *o = &global_op_class[op]; 3609 u8 ch; 3610 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3611 3612 if (o->p2p == NO_P2P_SUPP) 3613 continue; 3614 3615 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3616 if (mode == NULL) 3617 continue; 3618 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3619 wpa_s->global->p2p_24ghz_social_channels = 1; 3620 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3621 enum chan_allowed res; 3622 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3623 if (res == ALLOWED) { 3624 if (reg == NULL) { 3625 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3626 o->op_class); 3627 reg = &chan->reg_class[cla]; 3628 cla++; 3629 reg->reg_class = o->op_class; 3630 } 3631 reg->channel[reg->channels] = ch; 3632 reg->channels++; 3633 } else if (res == NO_IR && 3634 wpa_s->conf->p2p_add_cli_chan) { 3635 if (cli_reg == NULL) { 3636 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3637 o->op_class); 3638 cli_reg = &cli_chan->reg_class[cli_cla]; 3639 cli_cla++; 3640 cli_reg->reg_class = o->op_class; 3641 } 3642 cli_reg->channel[cli_reg->channels] = ch; 3643 cli_reg->channels++; 3644 } 3645 } 3646 if (reg) { 3647 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3648 reg->channel, reg->channels); 3649 } 3650 if (cli_reg) { 3651 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3652 cli_reg->channel, cli_reg->channels); 3653 } 3654 } 3655 3656 chan->reg_classes = cla; 3657 cli_chan->reg_classes = cli_cla; 3658 3659 return 0; 3660 } 3661 3662 3663 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3664 struct hostapd_hw_modes *mode, u8 channel) 3665 { 3666 int op; 3667 enum chan_allowed ret; 3668 3669 for (op = 0; global_op_class[op].op_class; op++) { 3670 const struct oper_class_map *o = &global_op_class[op]; 3671 u8 ch; 3672 3673 if (o->p2p == NO_P2P_SUPP) 3674 continue; 3675 3676 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3677 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3678 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3679 ch != channel) 3680 continue; 3681 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3682 if (ret == ALLOWED) 3683 return (o->bw == BW40MINUS) ? -1 : 1; 3684 } 3685 } 3686 return 0; 3687 } 3688 3689 3690 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3691 struct hostapd_hw_modes *mode, u8 channel) 3692 { 3693 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3694 return 0; 3695 3696 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3697 } 3698 3699 3700 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3701 struct hostapd_hw_modes *mode, u8 channel) 3702 { 3703 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3704 return 0; 3705 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3706 } 3707 3708 3709 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3710 size_t buf_len) 3711 { 3712 struct wpa_supplicant *wpa_s = ctx; 3713 3714 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3715 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3716 break; 3717 } 3718 if (wpa_s == NULL) 3719 return -1; 3720 3721 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3722 } 3723 3724 3725 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3726 const u8 *ssid, size_t ssid_len) 3727 { 3728 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3729 struct wpa_ssid *s = wpa_s->current_ssid; 3730 if (s == NULL) 3731 continue; 3732 if (s->mode != WPAS_MODE_P2P_GO && 3733 s->mode != WPAS_MODE_AP && 3734 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3735 continue; 3736 if (s->ssid_len != ssid_len || 3737 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3738 continue; 3739 return wpa_s; 3740 } 3741 3742 return NULL; 3743 3744 } 3745 3746 3747 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3748 const u8 *peer_dev_addr) 3749 { 3750 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3751 struct wpa_ssid *ssid = wpa_s->current_ssid; 3752 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3753 continue; 3754 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3755 return wpa_s; 3756 } 3757 3758 return NULL; 3759 } 3760 3761 3762 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3763 { 3764 struct wpa_supplicant *wpa_s = ctx; 3765 3766 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3767 } 3768 3769 3770 static int wpas_is_concurrent_session_active(void *ctx) 3771 { 3772 struct wpa_supplicant *wpa_s = ctx; 3773 struct wpa_supplicant *ifs; 3774 3775 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3776 if (ifs == wpa_s) 3777 continue; 3778 if (ifs->wpa_state > WPA_ASSOCIATED) 3779 return 1; 3780 } 3781 return 0; 3782 } 3783 3784 3785 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3786 { 3787 struct wpa_supplicant *wpa_s = ctx; 3788 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3789 } 3790 3791 3792 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3793 const char *conf_p2p_dev) 3794 { 3795 struct wpa_interface iface; 3796 struct wpa_supplicant *p2pdev_wpa_s; 3797 char ifname[100]; 3798 char force_name[100]; 3799 int ret; 3800 3801 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3802 wpa_s->ifname); 3803 if (os_snprintf_error(sizeof(ifname), ret)) 3804 return -1; 3805 force_name[0] = '\0'; 3806 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3807 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3808 force_name, wpa_s->pending_interface_addr, NULL); 3809 if (ret < 0) { 3810 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3811 return ret; 3812 } 3813 os_strlcpy(wpa_s->pending_interface_name, ifname, 3814 sizeof(wpa_s->pending_interface_name)); 3815 3816 os_memset(&iface, 0, sizeof(iface)); 3817 iface.p2p_mgmt = 1; 3818 iface.ifname = wpa_s->pending_interface_name; 3819 iface.driver = wpa_s->driver->name; 3820 iface.driver_param = wpa_s->conf->driver_param; 3821 3822 /* 3823 * If a P2P Device configuration file was given, use it as the interface 3824 * configuration file (instead of using parent's configuration file. 3825 */ 3826 if (conf_p2p_dev) { 3827 iface.confname = conf_p2p_dev; 3828 iface.ctrl_interface = NULL; 3829 } else { 3830 iface.confname = wpa_s->confname; 3831 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3832 } 3833 3834 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3835 if (!p2pdev_wpa_s) { 3836 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3837 return -1; 3838 } 3839 3840 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s; 3841 wpa_s->pending_interface_name[0] = '\0'; 3842 return 0; 3843 } 3844 3845 3846 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3847 const u8 *noa, size_t noa_len) 3848 { 3849 struct wpa_supplicant *wpa_s, *intf = ctx; 3850 char hex[100]; 3851 3852 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3853 if (wpa_s->waiting_presence_resp) 3854 break; 3855 } 3856 if (!wpa_s) { 3857 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3858 return; 3859 } 3860 wpa_s->waiting_presence_resp = 0; 3861 3862 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3863 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3864 " status=%u noa=%s", MAC2STR(src), status, hex); 3865 } 3866 3867 3868 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3869 size_t ssid_len, u8 *go_dev_addr, 3870 u8 *ret_ssid, size_t *ret_ssid_len, 3871 u8 *intended_iface_addr) 3872 { 3873 struct wpa_supplicant *wpa_s = ctx; 3874 struct wpa_ssid *s; 3875 3876 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3877 if (s) { 3878 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3879 *ret_ssid_len = s->ssid_len; 3880 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3881 3882 if (s->mode != WPAS_MODE_P2P_GO) { 3883 os_memset(intended_iface_addr, 0, ETH_ALEN); 3884 } else if (wpas_p2p_create_iface(wpa_s)) { 3885 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3886 return 0; 3887 3888 os_memcpy(intended_iface_addr, 3889 wpa_s->pending_interface_addr, ETH_ALEN); 3890 } else { 3891 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3892 ETH_ALEN); 3893 } 3894 return 1; 3895 } 3896 3897 return 0; 3898 } 3899 3900 3901 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3902 u8 *ssid, size_t *ssid_len, int *group_iface, 3903 unsigned int *freq) 3904 { 3905 struct wpa_supplicant *wpa_s = ctx; 3906 struct wpa_supplicant *go; 3907 struct wpa_ssid *s; 3908 3909 /* 3910 * group_iface will be set to 1 only if a dedicated interface for P2P 3911 * role is required. First, we try to reuse an active GO. However, 3912 * if it is not present, we will try to reactivate an existing 3913 * persistent group and set group_iface to 1, so the caller will know 3914 * that the pending interface should be used. 3915 */ 3916 *group_iface = 0; 3917 3918 if (freq) 3919 *freq = 0; 3920 3921 go = wpas_p2p_get_go_group(wpa_s); 3922 if (!go) { 3923 s = wpas_p2p_get_persistent_go(wpa_s); 3924 *group_iface = wpas_p2p_create_iface(wpa_s); 3925 if (s) 3926 os_memcpy(intended_addr, s->bssid, ETH_ALEN); 3927 else 3928 return 0; 3929 } else { 3930 s = go->current_ssid; 3931 os_memcpy(intended_addr, go->own_addr, ETH_ALEN); 3932 if (freq) 3933 *freq = go->assoc_freq; 3934 } 3935 3936 os_memcpy(ssid, s->ssid, s->ssid_len); 3937 *ssid_len = s->ssid_len; 3938 3939 return 1; 3940 } 3941 3942 3943 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3944 const u8 *ssid, size_t ssid_len) 3945 { 3946 struct wpa_supplicant *wpa_s = ctx; 3947 struct wpa_ssid *s; 3948 int save_config = 0; 3949 size_t i; 3950 3951 /* Start with our first choice of Persistent Groups */ 3952 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3953 if (go && ssid && ssid_len && 3954 s->ssid_len == ssid_len && 3955 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3956 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3957 break; 3958 3959 /* Remove stale persistent group */ 3960 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3961 wpa_dbg(wpa_s, MSG_DEBUG, 3962 "P2P: Remove stale persistent group id=%d", 3963 s->id); 3964 wpas_notify_persistent_group_removed(wpa_s, s); 3965 wpa_config_remove_network(wpa_s->conf, s->id); 3966 save_config = 1; 3967 continue; 3968 } 3969 3970 for (i = 0; i < s->num_p2p_clients; i++) { 3971 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3972 peer, ETH_ALEN) != 0) 3973 continue; 3974 3975 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3976 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3977 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3978 break; 3979 } 3980 s->num_p2p_clients--; 3981 save_config = 1; 3982 } 3983 3984 if (save_config) 3985 p2p_config_write(wpa_s); 3986 3987 /* Return TRUE if valid SSID remains */ 3988 return s != NULL; 3989 } 3990 3991 3992 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3993 const u8 *feat_cap, size_t feat_cap_len) 3994 { 3995 static const char pref[] = " feature_cap="; 3996 int ret; 3997 3998 buf[0] = '\0'; 3999 4000 /* 4001 * We expect a feature capability to contain at least one byte to be 4002 * reported. The string buffer provided by the caller function is 4003 * expected to be big enough to contain all bytes of the attribute for 4004 * known specifications. This function truncates the reported bytes if 4005 * the feature capability data exceeds the string buffer size. 4006 */ 4007 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 4008 return; 4009 4010 os_memcpy(buf, pref, sizeof(pref)); 4011 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 4012 buf_len - sizeof(pref) + 1, 4013 feat_cap, feat_cap_len); 4014 4015 if (ret != (2 * (int) feat_cap_len)) 4016 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 4017 } 4018 4019 4020 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 4021 const u8 *adv_mac, const u8 *ses_mac, 4022 const u8 *grp_mac, u32 adv_id, u32 ses_id, 4023 u8 conncap, int passwd_id, 4024 const u8 *persist_ssid, 4025 size_t persist_ssid_size, int response_done, 4026 int prov_start, const char *session_info, 4027 const u8 *feat_cap, size_t feat_cap_len, 4028 unsigned int freq, 4029 const u8 *group_ssid, size_t group_ssid_len) 4030 { 4031 struct wpa_supplicant *wpa_s = ctx; 4032 u8 mac[ETH_ALEN]; 4033 struct wpa_ssid *persistent_go, *stale, *s = NULL; 4034 int save_config = 0; 4035 struct wpa_supplicant *go_wpa_s; 4036 char feat_cap_str[256]; 4037 4038 if (!dev) 4039 return; 4040 4041 os_memset(mac, 0, ETH_ALEN); 4042 if (!adv_mac) 4043 adv_mac = mac; 4044 if (!ses_mac) 4045 ses_mac = mac; 4046 if (!grp_mac) 4047 grp_mac = mac; 4048 4049 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 4050 feat_cap, feat_cap_len); 4051 4052 if (prov_start) { 4053 if (session_info == NULL) { 4054 wpa_msg_global(wpa_s, MSG_INFO, 4055 P2P_EVENT_P2PS_PROVISION_START MACSTR 4056 " adv_id=%x conncap=%x" 4057 " adv_mac=" MACSTR 4058 " session=%x mac=" MACSTR 4059 " dev_passwd_id=%d%s", 4060 MAC2STR(dev), adv_id, conncap, 4061 MAC2STR(adv_mac), 4062 ses_id, MAC2STR(ses_mac), 4063 passwd_id, feat_cap_str); 4064 } else { 4065 wpa_msg_global(wpa_s, MSG_INFO, 4066 P2P_EVENT_P2PS_PROVISION_START MACSTR 4067 " adv_id=%x conncap=%x" 4068 " adv_mac=" MACSTR 4069 " session=%x mac=" MACSTR 4070 " dev_passwd_id=%d info='%s'%s", 4071 MAC2STR(dev), adv_id, conncap, 4072 MAC2STR(adv_mac), 4073 ses_id, MAC2STR(ses_mac), 4074 passwd_id, session_info, feat_cap_str); 4075 } 4076 return; 4077 } 4078 4079 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4080 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4081 4082 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4083 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4084 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4085 4086 if (persistent_go && !persistent_go->num_p2p_clients) { 4087 /* remove empty persistent GO */ 4088 wpa_dbg(wpa_s, MSG_DEBUG, 4089 "P2P: Remove empty persistent group id=%d", 4090 persistent_go->id); 4091 wpas_notify_persistent_group_removed(wpa_s, 4092 persistent_go); 4093 wpa_config_remove_network(wpa_s->conf, 4094 persistent_go->id); 4095 } 4096 4097 wpa_msg_global(wpa_s, MSG_INFO, 4098 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4099 " status=%d" 4100 " adv_id=%x adv_mac=" MACSTR 4101 " session=%x mac=" MACSTR "%s", 4102 MAC2STR(dev), status, 4103 adv_id, MAC2STR(adv_mac), 4104 ses_id, MAC2STR(ses_mac), feat_cap_str); 4105 return; 4106 } 4107 4108 /* Clean up stale persistent groups with this device */ 4109 if (persist_ssid && persist_ssid_size) 4110 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4111 persist_ssid_size); 4112 4113 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4114 is_zero_ether_addr(grp_mac)) { 4115 wpa_dbg(wpa_s, MSG_ERROR, 4116 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4117 return; 4118 } 4119 4120 for (;;) { 4121 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4122 if (!stale) 4123 break; 4124 4125 if (s && s->ssid_len == stale->ssid_len && 4126 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4127 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4128 break; 4129 4130 /* Remove stale persistent group */ 4131 if (stale->mode != WPAS_MODE_P2P_GO || 4132 stale->num_p2p_clients <= 1) { 4133 wpa_dbg(wpa_s, MSG_DEBUG, 4134 "P2P: Remove stale persistent group id=%d", 4135 stale->id); 4136 wpas_notify_persistent_group_removed(wpa_s, stale); 4137 wpa_config_remove_network(wpa_s->conf, stale->id); 4138 } else { 4139 size_t i; 4140 4141 for (i = 0; i < stale->num_p2p_clients; i++) { 4142 if (os_memcmp(stale->p2p_client_list + 4143 i * ETH_ALEN, 4144 dev, ETH_ALEN) == 0) { 4145 os_memmove(stale->p2p_client_list + 4146 i * ETH_ALEN, 4147 stale->p2p_client_list + 4148 (i + 1) * ETH_ALEN, 4149 (stale->num_p2p_clients - 4150 i - 1) * ETH_ALEN); 4151 break; 4152 } 4153 } 4154 stale->num_p2p_clients--; 4155 } 4156 save_config = 1; 4157 } 4158 4159 if (save_config) 4160 p2p_config_write(wpa_s); 4161 4162 if (s) { 4163 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4164 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4165 4166 if (persistent_go && s != persistent_go && 4167 !persistent_go->num_p2p_clients) { 4168 /* remove empty persistent GO */ 4169 wpa_dbg(wpa_s, MSG_DEBUG, 4170 "P2P: Remove empty persistent group id=%d", 4171 persistent_go->id); 4172 wpas_notify_persistent_group_removed(wpa_s, 4173 persistent_go); 4174 wpa_config_remove_network(wpa_s->conf, 4175 persistent_go->id); 4176 /* Save config */ 4177 } 4178 4179 wpa_msg_global(wpa_s, MSG_INFO, 4180 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4181 " status=%d" 4182 " adv_id=%x adv_mac=" MACSTR 4183 " session=%x mac=" MACSTR 4184 " persist=%d%s", 4185 MAC2STR(dev), status, 4186 adv_id, MAC2STR(adv_mac), 4187 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4188 return; 4189 } 4190 4191 wpa_s->global->pending_p2ps_group = 0; 4192 wpa_s->global->pending_p2ps_group_freq = 0; 4193 4194 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4195 /* 4196 * We need to copy the interface name. Simply saving a 4197 * pointer isn't enough, since if we use pending_interface_name 4198 * it will be overwritten when the group is added. 4199 */ 4200 char go_ifname[100]; 4201 4202 go_ifname[0] = '\0'; 4203 if (!go_wpa_s) { 4204 if (!response_done) { 4205 wpa_s->global->pending_p2ps_group = 1; 4206 wpa_s->global->pending_p2ps_group_freq = freq; 4207 } 4208 4209 if (!wpas_p2p_create_iface(wpa_s)) 4210 os_memcpy(go_ifname, wpa_s->ifname, 4211 sizeof(go_ifname)); 4212 else if (wpa_s->pending_interface_name[0]) 4213 os_memcpy(go_ifname, 4214 wpa_s->pending_interface_name, 4215 sizeof(go_ifname)); 4216 4217 if (!go_ifname[0]) { 4218 wpas_p2ps_prov_complete( 4219 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4220 dev, adv_mac, ses_mac, 4221 grp_mac, adv_id, ses_id, 0, 0, 4222 NULL, 0, 0, 0, NULL, NULL, 0, 0, 4223 NULL, 0); 4224 return; 4225 } 4226 4227 /* If PD Resp complete, start up the GO */ 4228 if (response_done && persistent_go) { 4229 wpas_p2p_group_add_persistent( 4230 wpa_s, persistent_go, 4231 0, 0, freq, 0, 0, 0, 0, 0, NULL, 4232 persistent_go->mode == 4233 WPAS_MODE_P2P_GO ? 4234 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4235 0, 0); 4236 } else if (response_done) { 4237 wpas_p2p_group_add(wpa_s, 1, freq, 4238 0, 0, 0, 0, 0); 4239 } 4240 4241 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4242 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4243 ETH_ALEN); 4244 wpa_s->p2ps_method_config_any = 1; 4245 } 4246 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4247 os_memcpy(go_ifname, go_wpa_s->ifname, 4248 sizeof(go_ifname)); 4249 4250 if (is_zero_ether_addr(grp_mac)) { 4251 wpa_dbg(go_wpa_s, MSG_DEBUG, 4252 "P2P: Setting PIN-1 for ANY"); 4253 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4254 "12345670", NULL, 0, 4255 0); 4256 } else { 4257 wpa_dbg(go_wpa_s, MSG_DEBUG, 4258 "P2P: Setting PIN-1 for " MACSTR, 4259 MAC2STR(grp_mac)); 4260 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4261 "12345670", NULL, 0, 4262 0); 4263 } 4264 4265 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4266 wpa_s->p2ps_method_config_any = 1; 4267 } 4268 4269 wpa_msg_global(wpa_s, MSG_INFO, 4270 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4271 " status=%d conncap=%x" 4272 " adv_id=%x adv_mac=" MACSTR 4273 " session=%x mac=" MACSTR 4274 " dev_passwd_id=%d go=%s%s", 4275 MAC2STR(dev), status, conncap, 4276 adv_id, MAC2STR(adv_mac), 4277 ses_id, MAC2STR(ses_mac), 4278 passwd_id, go_ifname, feat_cap_str); 4279 return; 4280 } 4281 4282 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4283 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4284 4285 if (persistent_go && !persistent_go->num_p2p_clients) { 4286 /* remove empty persistent GO */ 4287 wpa_dbg(wpa_s, MSG_DEBUG, 4288 "P2P: Remove empty persistent group id=%d", 4289 persistent_go->id); 4290 wpas_notify_persistent_group_removed(wpa_s, persistent_go); 4291 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4292 } 4293 4294 if (conncap == P2PS_SETUP_CLIENT) { 4295 char ssid_hex[32 * 2 + 1]; 4296 4297 if (group_ssid) 4298 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex), 4299 group_ssid, group_ssid_len); 4300 else 4301 ssid_hex[0] = '\0'; 4302 wpa_msg_global(wpa_s, MSG_INFO, 4303 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4304 " status=%d conncap=%x" 4305 " adv_id=%x adv_mac=" MACSTR 4306 " session=%x mac=" MACSTR 4307 " dev_passwd_id=%d join=" MACSTR "%s%s%s", 4308 MAC2STR(dev), status, conncap, 4309 adv_id, MAC2STR(adv_mac), 4310 ses_id, MAC2STR(ses_mac), 4311 passwd_id, MAC2STR(grp_mac), feat_cap_str, 4312 group_ssid ? " group_ssid=" : "", ssid_hex); 4313 } else { 4314 wpa_msg_global(wpa_s, MSG_INFO, 4315 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4316 " status=%d conncap=%x" 4317 " adv_id=%x adv_mac=" MACSTR 4318 " session=%x mac=" MACSTR 4319 " dev_passwd_id=%d%s", 4320 MAC2STR(dev), status, conncap, 4321 adv_id, MAC2STR(adv_mac), 4322 ses_id, MAC2STR(ses_mac), 4323 passwd_id, feat_cap_str); 4324 } 4325 } 4326 4327 4328 static int _wpas_p2p_in_progress(void *ctx) 4329 { 4330 struct wpa_supplicant *wpa_s = ctx; 4331 return wpas_p2p_in_progress(wpa_s); 4332 } 4333 4334 4335 static int wpas_prov_disc_resp_cb(void *ctx) 4336 { 4337 struct wpa_supplicant *wpa_s = ctx; 4338 struct wpa_ssid *persistent_go; 4339 unsigned int freq; 4340 4341 if (!wpa_s->global->pending_p2ps_group) 4342 return 0; 4343 4344 freq = wpa_s->global->pending_p2ps_group_freq; 4345 wpa_s->global->pending_p2ps_group_freq = 0; 4346 wpa_s->global->pending_p2ps_group = 0; 4347 4348 if (wpas_p2p_get_go_group(wpa_s)) 4349 return 0; 4350 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4351 4352 if (persistent_go) { 4353 wpas_p2p_group_add_persistent( 4354 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, 0, NULL, 4355 persistent_go->mode == WPAS_MODE_P2P_GO ? 4356 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4357 } else { 4358 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0, 0); 4359 } 4360 4361 return 1; 4362 } 4363 4364 4365 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4366 unsigned int *len, 4367 unsigned int *freq_list) 4368 { 4369 struct wpa_supplicant *wpa_s = ctx; 4370 4371 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4372 WPA_IF_P2P_CLIENT, len, freq_list); 4373 } 4374 4375 4376 int wpas_p2p_mac_setup(struct wpa_supplicant *wpa_s) 4377 { 4378 u8 addr[ETH_ALEN] = {0}; 4379 4380 if (wpa_s->conf->p2p_device_random_mac_addr == 0) 4381 return 0; 4382 4383 if (!wpa_s->conf->ssid) { 4384 if (random_mac_addr(addr) < 0) { 4385 wpa_msg(wpa_s, MSG_INFO, 4386 "Failed to generate random MAC address"); 4387 return -EINVAL; 4388 } 4389 4390 /* Store generated MAC address. */ 4391 os_memcpy(wpa_s->conf->p2p_device_persistent_mac_addr, addr, 4392 ETH_ALEN); 4393 } else { 4394 /* If there are existing saved groups, restore last MAC address. 4395 * if there is no last used MAC address, the last one is 4396 * factory MAC. */ 4397 if (is_zero_ether_addr( 4398 wpa_s->conf->p2p_device_persistent_mac_addr)) 4399 return 0; 4400 os_memcpy(addr, wpa_s->conf->p2p_device_persistent_mac_addr, 4401 ETH_ALEN); 4402 wpa_msg(wpa_s, MSG_DEBUG, "Restore last used MAC address."); 4403 } 4404 4405 if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) { 4406 wpa_msg(wpa_s, MSG_INFO, 4407 "Failed to set random MAC address"); 4408 return -EINVAL; 4409 } 4410 4411 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 4412 wpa_msg(wpa_s, MSG_INFO, 4413 "Could not update MAC address information"); 4414 return -EINVAL; 4415 } 4416 4417 wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR, 4418 MAC2STR(addr)); 4419 4420 return 0; 4421 } 4422 4423 4424 /** 4425 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4426 * @global: Pointer to global data from wpa_supplicant_init() 4427 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4428 * Returns: 0 on success, -1 on failure 4429 */ 4430 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4431 { 4432 struct p2p_config p2p; 4433 int i; 4434 4435 if (wpa_s->conf->p2p_disabled) 4436 return 0; 4437 4438 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4439 return 0; 4440 4441 if (global->p2p) 4442 return 0; 4443 4444 if (wpas_p2p_mac_setup(wpa_s) < 0) { 4445 wpa_msg(wpa_s, MSG_ERROR, 4446 "Failed to initialize P2P random MAC address."); 4447 return -1; 4448 } 4449 4450 os_memset(&p2p, 0, sizeof(p2p)); 4451 p2p.cb_ctx = wpa_s; 4452 p2p.debug_print = wpas_p2p_debug_print; 4453 p2p.p2p_scan = wpas_p2p_scan; 4454 p2p.send_action = wpas_send_action; 4455 p2p.send_action_done = wpas_send_action_done; 4456 p2p.go_neg_completed = wpas_go_neg_completed; 4457 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4458 p2p.dev_found = wpas_dev_found; 4459 p2p.dev_lost = wpas_dev_lost; 4460 p2p.find_stopped = wpas_find_stopped; 4461 p2p.start_listen = wpas_start_listen; 4462 p2p.stop_listen = wpas_stop_listen; 4463 p2p.send_probe_resp = wpas_send_probe_resp; 4464 p2p.sd_request = wpas_sd_request; 4465 p2p.sd_response = wpas_sd_response; 4466 p2p.prov_disc_req = wpas_prov_disc_req; 4467 p2p.prov_disc_resp = wpas_prov_disc_resp; 4468 p2p.prov_disc_fail = wpas_prov_disc_fail; 4469 p2p.invitation_process = wpas_invitation_process; 4470 p2p.invitation_received = wpas_invitation_received; 4471 p2p.invitation_result = wpas_invitation_result; 4472 p2p.get_noa = wpas_get_noa; 4473 p2p.go_connected = wpas_go_connected; 4474 p2p.presence_resp = wpas_presence_resp; 4475 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4476 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4477 p2p.get_persistent_group = wpas_get_persistent_group; 4478 p2p.get_go_info = wpas_get_go_info; 4479 p2p.remove_stale_groups = wpas_remove_stale_groups; 4480 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4481 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4482 p2p.p2ps_group_capability = p2ps_group_capability; 4483 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4484 4485 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4486 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4487 p2p.dev_name = wpa_s->conf->device_name; 4488 p2p.manufacturer = wpa_s->conf->manufacturer; 4489 p2p.model_name = wpa_s->conf->model_name; 4490 p2p.model_number = wpa_s->conf->model_number; 4491 p2p.serial_number = wpa_s->conf->serial_number; 4492 if (wpa_s->wps) { 4493 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4494 p2p.config_methods = wpa_s->wps->config_methods; 4495 } 4496 4497 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4498 wpa_printf(MSG_ERROR, 4499 "P2P: Failed to configure supported channel list"); 4500 return -1; 4501 } 4502 4503 if (wpa_s->conf->p2p_listen_reg_class && 4504 wpa_s->conf->p2p_listen_channel) { 4505 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4506 p2p.channel = wpa_s->conf->p2p_listen_channel; 4507 p2p.channel_forced = 1; 4508 } else { 4509 /* 4510 * Pick one of the social channels randomly as the listen 4511 * channel. 4512 */ 4513 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4514 &p2p.channel, 4515 &global->p2p_go_avoid_freq, 4516 &global->p2p_disallow_freq) != 4517 0) { 4518 wpa_printf(MSG_INFO, 4519 "P2P: No social channels supported by the driver - do not enable P2P"); 4520 return 0; 4521 } 4522 p2p.channel_forced = 0; 4523 } 4524 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4525 p2p.reg_class, p2p.channel); 4526 4527 if (wpa_s->conf->p2p_oper_reg_class && 4528 wpa_s->conf->p2p_oper_channel) { 4529 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4530 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4531 p2p.cfg_op_channel = 1; 4532 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4533 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4534 4535 } else { 4536 /* 4537 * Use random operation channel from 2.4 GHz band social 4538 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4539 * other preference is indicated. 4540 */ 4541 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4542 &p2p.op_channel, NULL, 4543 NULL) != 0) { 4544 wpa_printf(MSG_INFO, 4545 "P2P: Failed to select random social channel as operation channel"); 4546 p2p.op_reg_class = 0; 4547 p2p.op_channel = 0; 4548 /* This will be overridden during group setup in 4549 * p2p_prepare_channel(), so allow setup to continue. */ 4550 } 4551 p2p.cfg_op_channel = 0; 4552 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4553 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4554 } 4555 4556 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4557 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4558 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4559 } 4560 4561 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4562 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4563 p2p.country[2] = 0x04; 4564 } else 4565 os_memcpy(p2p.country, "XX\x04", 3); 4566 4567 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4568 WPS_DEV_TYPE_LEN); 4569 4570 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4571 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4572 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4573 4574 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4575 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4576 4577 p2p.max_peers = 100; 4578 4579 if (wpa_s->conf->p2p_ssid_postfix) { 4580 p2p.ssid_postfix_len = 4581 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4582 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4583 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4584 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4585 p2p.ssid_postfix_len); 4586 } 4587 4588 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4589 4590 p2p.max_listen = wpa_s->max_remain_on_chan; 4591 4592 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4593 wpa_s->conf->p2p_passphrase_len <= 63) 4594 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4595 else 4596 p2p.passphrase_len = 8; 4597 4598 global->p2p = p2p_init(&p2p); 4599 if (global->p2p == NULL) 4600 return -1; 4601 global->p2p_init_wpa_s = wpa_s; 4602 4603 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4604 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4605 continue; 4606 p2p_add_wps_vendor_extension( 4607 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4608 } 4609 4610 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4611 4612 return 0; 4613 } 4614 4615 4616 /** 4617 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4618 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4619 * 4620 * This function deinitialize per-interface P2P data. 4621 */ 4622 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4623 { 4624 if (wpa_s->driver && wpa_s->drv_priv) 4625 wpa_drv_probe_req_report(wpa_s, 0); 4626 4627 if (wpa_s->go_params) { 4628 /* Clear any stored provisioning info */ 4629 p2p_clear_provisioning_info( 4630 wpa_s->global->p2p, 4631 wpa_s->go_params->peer_device_addr); 4632 } 4633 4634 os_free(wpa_s->go_params); 4635 wpa_s->go_params = NULL; 4636 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4637 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4638 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4639 wpa_s->p2p_long_listen = 0; 4640 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4641 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4642 wpas_p2p_remove_pending_group_interface(wpa_s); 4643 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4644 wpas_p2p_listen_work_done(wpa_s); 4645 if (wpa_s->p2p_send_action_work) { 4646 os_free(wpa_s->p2p_send_action_work->ctx); 4647 radio_work_done(wpa_s->p2p_send_action_work); 4648 wpa_s->p2p_send_action_work = NULL; 4649 } 4650 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4651 4652 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4653 wpa_s->p2p_oob_dev_pw = NULL; 4654 4655 os_free(wpa_s->p2p_group_common_freqs); 4656 wpa_s->p2p_group_common_freqs = NULL; 4657 wpa_s->p2p_group_common_freqs_num = 0; 4658 4659 /* TODO: remove group interface from the driver if this wpa_s instance 4660 * is on top of a P2P group interface */ 4661 } 4662 4663 4664 /** 4665 * wpas_p2p_deinit_global - Deinitialize global P2P module 4666 * @global: Pointer to global data from wpa_supplicant_init() 4667 * 4668 * This function deinitializes the global (per device) P2P module. 4669 */ 4670 static void wpas_p2p_deinit_global(struct wpa_global *global) 4671 { 4672 struct wpa_supplicant *wpa_s, *tmp; 4673 4674 wpa_s = global->ifaces; 4675 4676 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4677 4678 /* Remove remaining P2P group interfaces */ 4679 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4680 wpa_s = wpa_s->next; 4681 while (wpa_s) { 4682 tmp = global->ifaces; 4683 while (tmp && 4684 (tmp == wpa_s || 4685 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4686 tmp = tmp->next; 4687 } 4688 if (tmp == NULL) 4689 break; 4690 /* Disconnect from the P2P group and deinit the interface */ 4691 wpas_p2p_disconnect(tmp); 4692 } 4693 4694 /* 4695 * Deinit GO data on any possibly remaining interface (if main 4696 * interface is used as GO). 4697 */ 4698 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4699 if (wpa_s->ap_iface) 4700 wpas_p2p_group_deinit(wpa_s); 4701 } 4702 4703 p2p_deinit(global->p2p); 4704 global->p2p = NULL; 4705 global->p2p_init_wpa_s = NULL; 4706 } 4707 4708 4709 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4710 { 4711 if (wpa_s->conf->p2p_no_group_iface) 4712 return 0; /* separate interface disabled per configuration */ 4713 if (wpa_s->drv_flags & 4714 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4715 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4716 return 1; /* P2P group requires a new interface in every case 4717 */ 4718 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4719 return 0; /* driver does not support concurrent operations */ 4720 if (wpa_s->global->ifaces->next) 4721 return 1; /* more that one interface already in use */ 4722 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4723 return 1; /* this interface is already in use */ 4724 return 0; 4725 } 4726 4727 4728 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4729 const u8 *peer_addr, 4730 enum p2p_wps_method wps_method, 4731 int go_intent, const u8 *own_interface_addr, 4732 unsigned int force_freq, int persistent_group, 4733 struct wpa_ssid *ssid, unsigned int pref_freq) 4734 { 4735 if (persistent_group && wpa_s->conf->persistent_reconnect) 4736 persistent_group = 2; 4737 4738 /* 4739 * Increase GO config timeout if HT40 is used since it takes some time 4740 * to scan channels for coex purposes before the BSS can be started. 4741 */ 4742 p2p_set_config_timeout(wpa_s->global->p2p, 4743 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4744 4745 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4746 go_intent, own_interface_addr, force_freq, 4747 persistent_group, ssid ? ssid->ssid : NULL, 4748 ssid ? ssid->ssid_len : 0, 4749 wpa_s->p2p_pd_before_go_neg, pref_freq, 4750 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4751 0); 4752 } 4753 4754 4755 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4756 const u8 *peer_addr, 4757 enum p2p_wps_method wps_method, 4758 int go_intent, const u8 *own_interface_addr, 4759 unsigned int force_freq, int persistent_group, 4760 struct wpa_ssid *ssid, unsigned int pref_freq) 4761 { 4762 if (persistent_group && wpa_s->conf->persistent_reconnect) 4763 persistent_group = 2; 4764 4765 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4766 go_intent, own_interface_addr, force_freq, 4767 persistent_group, ssid ? ssid->ssid : NULL, 4768 ssid ? ssid->ssid_len : 0, pref_freq, 4769 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4770 0); 4771 } 4772 4773 4774 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4775 { 4776 wpa_s->p2p_join_scan_count++; 4777 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4778 wpa_s->p2p_join_scan_count); 4779 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4780 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4781 " for join operationg - stop join attempt", 4782 MAC2STR(wpa_s->pending_join_iface_addr)); 4783 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4784 if (wpa_s->p2p_auto_pd) { 4785 wpa_s->p2p_auto_pd = 0; 4786 wpa_msg_global(wpa_s, MSG_INFO, 4787 P2P_EVENT_PROV_DISC_FAILURE 4788 " p2p_dev_addr=" MACSTR " status=N/A", 4789 MAC2STR(wpa_s->pending_join_dev_addr)); 4790 return; 4791 } 4792 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4793 P2P_EVENT_GROUP_FORMATION_FAILURE); 4794 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4795 } 4796 } 4797 4798 4799 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4800 { 4801 int res; 4802 unsigned int num, i; 4803 struct wpa_used_freq_data *freqs; 4804 4805 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4806 /* Multiple channels are supported and not all are in use */ 4807 return 0; 4808 } 4809 4810 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4811 sizeof(struct wpa_used_freq_data)); 4812 if (!freqs) 4813 return 1; 4814 4815 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4816 wpa_s->num_multichan_concurrent); 4817 4818 for (i = 0; i < num; i++) { 4819 if (freqs[i].freq == freq) { 4820 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4821 freq); 4822 res = 0; 4823 goto exit_free; 4824 } 4825 } 4826 4827 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4828 res = 1; 4829 4830 exit_free: 4831 os_free(freqs); 4832 return res; 4833 } 4834 4835 4836 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4837 const u8 *peer_dev_addr) 4838 { 4839 struct wpa_bss *bss; 4840 int updated; 4841 4842 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4843 if (bss == NULL) 4844 return -1; 4845 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4846 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4847 "last scan"); 4848 return 0; 4849 } 4850 4851 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4852 &bss->last_update); 4853 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4854 "%ld.%06ld (%supdated in last scan)", 4855 bss->last_update.sec, bss->last_update.usec, 4856 updated ? "": "not "); 4857 4858 return updated; 4859 } 4860 4861 4862 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4863 struct wpa_scan_results *scan_res) 4864 { 4865 struct wpa_bss *bss = NULL; 4866 int freq; 4867 u8 iface_addr[ETH_ALEN]; 4868 4869 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4870 4871 if (wpa_s->global->p2p_disabled) 4872 return; 4873 4874 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4875 scan_res ? (int) scan_res->num : -1, 4876 wpa_s->p2p_auto_join ? "auto_" : ""); 4877 4878 if (scan_res) 4879 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4880 4881 if (wpa_s->p2p_auto_pd) { 4882 int join = wpas_p2p_peer_go(wpa_s, 4883 wpa_s->pending_join_dev_addr); 4884 if (join == 0 && 4885 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4886 wpa_s->auto_pd_scan_retry++; 4887 bss = wpa_bss_get_bssid_latest( 4888 wpa_s, wpa_s->pending_join_dev_addr); 4889 if (bss) { 4890 freq = bss->freq; 4891 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4892 "the peer " MACSTR " at %d MHz", 4893 wpa_s->auto_pd_scan_retry, 4894 MAC2STR(wpa_s-> 4895 pending_join_dev_addr), 4896 freq); 4897 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4898 return; 4899 } 4900 } 4901 4902 if (join < 0) 4903 join = 0; 4904 4905 wpa_s->p2p_auto_pd = 0; 4906 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4907 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4908 MAC2STR(wpa_s->pending_join_dev_addr), join); 4909 if (p2p_prov_disc_req(wpa_s->global->p2p, 4910 wpa_s->pending_join_dev_addr, NULL, 4911 wpa_s->pending_pd_config_methods, join, 4912 0, wpa_s->user_initiated_pd) < 0) { 4913 wpa_s->p2p_auto_pd = 0; 4914 wpa_msg_global(wpa_s, MSG_INFO, 4915 P2P_EVENT_PROV_DISC_FAILURE 4916 " p2p_dev_addr=" MACSTR " status=N/A", 4917 MAC2STR(wpa_s->pending_join_dev_addr)); 4918 } 4919 return; 4920 } 4921 4922 if (wpa_s->p2p_auto_join) { 4923 int join = wpas_p2p_peer_go(wpa_s, 4924 wpa_s->pending_join_dev_addr); 4925 if (join < 0) { 4926 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4927 "running a GO -> use GO Negotiation"); 4928 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4929 P2P_EVENT_FALLBACK_TO_GO_NEG 4930 "reason=peer-not-running-GO"); 4931 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4932 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4933 wpa_s->p2p_persistent_group, 0, 0, 0, 4934 wpa_s->p2p_go_intent, 4935 wpa_s->p2p_connect_freq, 4936 wpa_s->p2p_go_vht_center_freq2, 4937 wpa_s->p2p_persistent_id, 4938 wpa_s->p2p_pd_before_go_neg, 4939 wpa_s->p2p_go_ht40, 4940 wpa_s->p2p_go_vht, 4941 wpa_s->p2p_go_max_oper_chwidth, 4942 wpa_s->p2p_go_he, 4943 NULL, 0); 4944 return; 4945 } 4946 4947 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4948 "try to join the group", join ? "" : 4949 " in older scan"); 4950 if (!join) { 4951 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4952 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4953 wpa_s->p2p_fallback_to_go_neg = 1; 4954 } 4955 } 4956 4957 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4958 wpa_s->pending_join_iface_addr); 4959 if (freq < 0 && 4960 p2p_get_interface_addr(wpa_s->global->p2p, 4961 wpa_s->pending_join_dev_addr, 4962 iface_addr) == 0 && 4963 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4964 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4965 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4966 "address for join from " MACSTR " to " MACSTR 4967 " based on newly discovered P2P peer entry", 4968 MAC2STR(wpa_s->pending_join_iface_addr), 4969 MAC2STR(iface_addr)); 4970 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4971 ETH_ALEN); 4972 4973 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4974 wpa_s->pending_join_iface_addr); 4975 } 4976 if (freq >= 0) { 4977 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4978 "from P2P peer table: %d MHz", freq); 4979 } 4980 if (wpa_s->p2p_join_ssid_len) { 4981 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4982 MACSTR " and SSID %s", 4983 MAC2STR(wpa_s->pending_join_iface_addr), 4984 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4985 wpa_s->p2p_join_ssid_len)); 4986 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4987 wpa_s->p2p_join_ssid, 4988 wpa_s->p2p_join_ssid_len); 4989 } else if (!bss) { 4990 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4991 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4992 bss = wpa_bss_get_bssid_latest(wpa_s, 4993 wpa_s->pending_join_iface_addr); 4994 } 4995 if (bss) { 4996 u8 dev_addr[ETH_ALEN]; 4997 4998 freq = bss->freq; 4999 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 5000 "from BSS table: %d MHz (SSID %s)", freq, 5001 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5002 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 5003 dev_addr) == 0 && 5004 os_memcmp(wpa_s->pending_join_dev_addr, 5005 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 5006 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 5007 ETH_ALEN) != 0) { 5008 wpa_printf(MSG_DEBUG, 5009 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 5010 MAC2STR(dev_addr), 5011 MAC2STR(wpa_s->pending_join_dev_addr)); 5012 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 5013 ETH_ALEN); 5014 } 5015 } 5016 if (freq > 0) { 5017 u16 method; 5018 5019 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 5020 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 5021 P2P_EVENT_GROUP_FORMATION_FAILURE 5022 "reason=FREQ_CONFLICT"); 5023 wpas_notify_p2p_group_formation_failure( 5024 wpa_s, "FREQ_CONFLICT"); 5025 return; 5026 } 5027 5028 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 5029 "prior to joining an existing group (GO " MACSTR 5030 " freq=%u MHz)", 5031 MAC2STR(wpa_s->pending_join_dev_addr), freq); 5032 wpa_s->pending_pd_before_join = 1; 5033 5034 switch (wpa_s->pending_join_wps_method) { 5035 case WPS_PIN_DISPLAY: 5036 method = WPS_CONFIG_KEYPAD; 5037 break; 5038 case WPS_PIN_KEYPAD: 5039 method = WPS_CONFIG_DISPLAY; 5040 break; 5041 case WPS_PBC: 5042 method = WPS_CONFIG_PUSHBUTTON; 5043 break; 5044 case WPS_P2PS: 5045 method = WPS_CONFIG_P2PS; 5046 break; 5047 default: 5048 method = 0; 5049 break; 5050 } 5051 5052 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 5053 wpa_s->pending_join_dev_addr) == 5054 method)) { 5055 /* 5056 * We have already performed provision discovery for 5057 * joining the group. Proceed directly to join 5058 * operation without duplicated provision discovery. */ 5059 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 5060 "with " MACSTR " already done - proceed to " 5061 "join", 5062 MAC2STR(wpa_s->pending_join_dev_addr)); 5063 wpa_s->pending_pd_before_join = 0; 5064 goto start; 5065 } 5066 5067 if (p2p_prov_disc_req(wpa_s->global->p2p, 5068 wpa_s->pending_join_dev_addr, 5069 NULL, method, 1, 5070 freq, wpa_s->user_initiated_pd) < 0) { 5071 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 5072 "Discovery Request before joining an " 5073 "existing group"); 5074 wpa_s->pending_pd_before_join = 0; 5075 goto start; 5076 } 5077 return; 5078 } 5079 5080 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 5081 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5082 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5083 wpas_p2p_check_join_scan_limit(wpa_s); 5084 return; 5085 5086 start: 5087 /* Start join operation immediately */ 5088 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid, 5089 wpa_s->p2p_join_ssid_len); 5090 } 5091 5092 5093 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 5094 const u8 *ssid, size_t ssid_len) 5095 { 5096 int ret; 5097 struct wpa_driver_scan_params params; 5098 struct wpabuf *wps_ie, *ies; 5099 size_t ielen; 5100 int freqs[2] = { 0, 0 }; 5101 unsigned int bands; 5102 5103 os_memset(¶ms, 0, sizeof(params)); 5104 5105 /* P2P Wildcard SSID */ 5106 params.num_ssids = 1; 5107 if (ssid && ssid_len) { 5108 params.ssids[0].ssid = ssid; 5109 params.ssids[0].ssid_len = ssid_len; 5110 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 5111 wpa_s->p2p_join_ssid_len = ssid_len; 5112 } else { 5113 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 5114 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 5115 wpa_s->p2p_join_ssid_len = 0; 5116 } 5117 5118 wpa_s->wps->dev.p2p = 1; 5119 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 5120 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 5121 NULL); 5122 if (wps_ie == NULL) { 5123 wpas_p2p_scan_res_join(wpa_s, NULL); 5124 return; 5125 } 5126 5127 if (!freq) { 5128 int oper_freq; 5129 /* 5130 * If freq is not provided, check the operating freq of the GO 5131 * and use a single channel scan on if possible. 5132 */ 5133 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 5134 wpa_s->pending_join_iface_addr); 5135 if (oper_freq > 0) 5136 freq = oper_freq; 5137 } 5138 if (freq > 0) { 5139 freqs[0] = freq; 5140 params.freqs = freqs; 5141 } 5142 5143 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 5144 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 5145 if (ies == NULL) { 5146 wpabuf_free(wps_ie); 5147 wpas_p2p_scan_res_join(wpa_s, NULL); 5148 return; 5149 } 5150 wpabuf_put_buf(ies, wps_ie); 5151 wpabuf_free(wps_ie); 5152 5153 bands = wpas_get_bands(wpa_s, freqs); 5154 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 5155 5156 params.p2p_probe = 1; 5157 params.extra_ies = wpabuf_head(ies); 5158 params.extra_ies_len = wpabuf_len(ies); 5159 5160 if (wpa_s->clear_driver_scan_cache) { 5161 wpa_printf(MSG_DEBUG, 5162 "Request driver to clear scan cache due to local BSS flush"); 5163 params.only_new_results = 1; 5164 } 5165 5166 /* 5167 * Run a scan to update BSS table and start Provision Discovery once 5168 * the new scan results become available. 5169 */ 5170 ret = wpa_drv_scan(wpa_s, ¶ms); 5171 if (!ret) { 5172 os_get_reltime(&wpa_s->scan_trigger_time); 5173 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 5174 wpa_s->own_scan_requested = 1; 5175 wpa_s->clear_driver_scan_cache = 0; 5176 } 5177 5178 wpabuf_free(ies); 5179 5180 if (ret) { 5181 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5182 "try again later"); 5183 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5184 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5185 wpas_p2p_check_join_scan_limit(wpa_s); 5186 } 5187 } 5188 5189 5190 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5191 { 5192 struct wpa_supplicant *wpa_s = eloop_ctx; 5193 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5194 } 5195 5196 5197 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5198 const u8 *dev_addr, enum p2p_wps_method wps_method, 5199 int auto_join, int op_freq, 5200 const u8 *ssid, size_t ssid_len) 5201 { 5202 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5203 MACSTR " dev " MACSTR " op_freq=%d)%s", 5204 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5205 auto_join ? " (auto_join)" : ""); 5206 if (ssid && ssid_len) { 5207 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5208 wpa_ssid_txt(ssid, ssid_len)); 5209 } 5210 5211 wpa_s->p2p_auto_pd = 0; 5212 wpa_s->p2p_auto_join = !!auto_join; 5213 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5214 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5215 wpa_s->pending_join_wps_method = wps_method; 5216 5217 /* Make sure we are not running find during connection establishment */ 5218 wpas_p2p_stop_find(wpa_s); 5219 5220 wpa_s->p2p_join_scan_count = 0; 5221 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5222 return 0; 5223 } 5224 5225 5226 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5227 const u8 *ssid, size_t ssid_len) 5228 { 5229 struct wpa_supplicant *group; 5230 struct p2p_go_neg_results res; 5231 struct wpa_bss *bss; 5232 5233 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5234 if (group == NULL) 5235 return -1; 5236 if (group != wpa_s) { 5237 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5238 sizeof(group->p2p_pin)); 5239 group->p2p_wps_method = wpa_s->p2p_wps_method; 5240 } 5241 5242 /* 5243 * Need to mark the current interface for p2p_group_formation 5244 * when a separate group interface is not used. This is needed 5245 * to allow p2p_cancel stop a pending p2p_connect-join. 5246 * wpas_p2p_init_group_interface() addresses this for the case 5247 * where a separate group interface is used. 5248 */ 5249 if (group == wpa_s->parent) 5250 wpa_s->global->p2p_group_formation = group; 5251 5252 group->p2p_in_provisioning = 1; 5253 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5254 5255 os_memset(&res, 0, sizeof(res)); 5256 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5257 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5258 ETH_ALEN); 5259 res.wps_method = wpa_s->pending_join_wps_method; 5260 if (freq && ssid && ssid_len) { 5261 res.freq = freq; 5262 res.ssid_len = ssid_len; 5263 os_memcpy(res.ssid, ssid, ssid_len); 5264 } else { 5265 if (ssid && ssid_len) { 5266 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 5267 ssid, ssid_len); 5268 } else { 5269 bss = wpa_bss_get_bssid_latest( 5270 wpa_s, wpa_s->pending_join_iface_addr); 5271 } 5272 if (bss) { 5273 res.freq = bss->freq; 5274 res.ssid_len = bss->ssid_len; 5275 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5276 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5277 bss->freq, 5278 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5279 } else if (ssid && ssid_len) { 5280 res.ssid_len = ssid_len; 5281 os_memcpy(res.ssid, ssid, ssid_len); 5282 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)", 5283 wpa_ssid_txt(ssid, ssid_len)); 5284 } 5285 } 5286 5287 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5288 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5289 "starting client"); 5290 wpa_drv_cancel_remain_on_channel(wpa_s); 5291 wpa_s->off_channel_freq = 0; 5292 wpa_s->roc_waiting_drv_freq = 0; 5293 } 5294 wpas_start_wps_enrollee(group, &res); 5295 5296 /* 5297 * Allow a longer timeout for join-a-running-group than normal 15 5298 * second group formation timeout since the GO may not have authorized 5299 * our connection yet. 5300 */ 5301 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5302 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5303 wpa_s, NULL); 5304 5305 return 0; 5306 } 5307 5308 5309 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5310 int *force_freq, int *pref_freq, int go, 5311 unsigned int *pref_freq_list, 5312 unsigned int *num_pref_freq) 5313 { 5314 struct wpa_used_freq_data *freqs; 5315 int res, best_freq, num_unused; 5316 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5317 5318 max_pref_freq = *num_pref_freq; 5319 *num_pref_freq = 0; 5320 5321 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5322 sizeof(struct wpa_used_freq_data)); 5323 if (!freqs) 5324 return -1; 5325 5326 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5327 wpa_s->num_multichan_concurrent); 5328 5329 /* 5330 * It is possible that the total number of used frequencies is bigger 5331 * than the number of frequencies used for P2P, so get the system wide 5332 * number of unused frequencies. 5333 */ 5334 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5335 5336 wpa_printf(MSG_DEBUG, 5337 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5338 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5339 5340 if (freq > 0) { 5341 int ret; 5342 if (go) 5343 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5344 else 5345 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5346 if (!ret) { 5347 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5348 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5349 wpa_s->hw.num_modes)) { 5350 /* 5351 * If freq is a DFS channel and DFS is offloaded 5352 * to the driver, allow P2P GO to use it. 5353 */ 5354 wpa_printf(MSG_DEBUG, 5355 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5356 freq); 5357 } else { 5358 wpa_printf(MSG_DEBUG, 5359 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5360 freq); 5361 res = -3; 5362 goto exit_free; 5363 } 5364 } 5365 5366 for (i = 0; i < num; i++) { 5367 if (freqs[i].freq == freq) 5368 freq_in_use = 1; 5369 } 5370 5371 if (num_unused <= 0 && !freq_in_use) { 5372 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5373 freq); 5374 res = -2; 5375 goto exit_free; 5376 } 5377 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5378 "requested channel (%u MHz)", freq); 5379 *force_freq = freq; 5380 goto exit_ok; 5381 } 5382 5383 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5384 5385 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5386 enum wpa_driver_if_type iface_type; 5387 5388 if (go) 5389 iface_type = WPA_IF_P2P_GO; 5390 else 5391 iface_type = WPA_IF_P2P_CLIENT; 5392 5393 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5394 best_freq, go); 5395 5396 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5397 &max_pref_freq, 5398 pref_freq_list); 5399 if (!res && max_pref_freq > 0) { 5400 *num_pref_freq = max_pref_freq; 5401 i = 0; 5402 while (i < *num_pref_freq && 5403 (!p2p_supported_freq(wpa_s->global->p2p, 5404 pref_freq_list[i]) || 5405 wpas_p2p_disallowed_freq(wpa_s->global, 5406 pref_freq_list[i]))) { 5407 wpa_printf(MSG_DEBUG, 5408 "P2P: preferred_freq_list[%d]=%d is disallowed", 5409 i, pref_freq_list[i]); 5410 i++; 5411 } 5412 if (i != *num_pref_freq) { 5413 best_freq = pref_freq_list[i]; 5414 wpa_printf(MSG_DEBUG, 5415 "P2P: Using preferred_freq_list[%d]=%d", 5416 i, best_freq); 5417 } else { 5418 wpa_printf(MSG_DEBUG, 5419 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5420 *num_pref_freq = 0; 5421 } 5422 } else { 5423 wpa_printf(MSG_DEBUG, 5424 "P2P: No preferred frequency list available"); 5425 } 5426 } 5427 5428 /* We have a candidate frequency to use */ 5429 if (best_freq > 0) { 5430 if (*pref_freq == 0 && num_unused > 0) { 5431 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5432 best_freq); 5433 *pref_freq = best_freq; 5434 } else { 5435 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5436 best_freq); 5437 *force_freq = best_freq; 5438 } 5439 } else if (num_unused > 0) { 5440 wpa_printf(MSG_DEBUG, 5441 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5442 *force_freq = 0; 5443 } else { 5444 wpa_printf(MSG_DEBUG, 5445 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5446 res = -2; 5447 goto exit_free; 5448 } 5449 5450 exit_ok: 5451 res = 0; 5452 exit_free: 5453 os_free(freqs); 5454 return res; 5455 } 5456 5457 5458 /** 5459 * wpas_p2p_connect - Request P2P Group Formation to be started 5460 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5461 * @peer_addr: Address of the peer P2P Device 5462 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5463 * @persistent_group: Whether to create a persistent group 5464 * @auto_join: Whether to select join vs. GO Negotiation automatically 5465 * @join: Whether to join an existing group (as a client) instead of starting 5466 * Group Owner negotiation; @peer_addr is BSSID in that case 5467 * @auth: Whether to only authorize the connection instead of doing that and 5468 * initiating Group Owner negotiation 5469 * @go_intent: GO Intent or -1 to use default 5470 * @freq: Frequency for the group or 0 for auto-selection 5471 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5472 * @persistent_id: Persistent group credentials to use for forcing GO 5473 * parameters or -1 to generate new values (SSID/passphrase) 5474 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5475 * interoperability workaround when initiating group formation 5476 * @ht40: Start GO with 40 MHz channel width 5477 * @vht: Start GO with VHT support 5478 * @vht_chwidth: Channel width supported by GO operating with VHT support 5479 * (VHT_CHANWIDTH_*). 5480 * @group_ssid: Specific Group SSID for join or %NULL if not set 5481 * @group_ssid_len: Length of @group_ssid in octets 5482 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5483 * failure, -2 on failure due to channel not currently available, 5484 * -3 if forced channel is not supported 5485 */ 5486 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5487 const char *pin, enum p2p_wps_method wps_method, 5488 int persistent_group, int auto_join, int join, int auth, 5489 int go_intent, int freq, unsigned int vht_center_freq2, 5490 int persistent_id, int pd, int ht40, int vht, 5491 unsigned int vht_chwidth, int he, const u8 *group_ssid, 5492 size_t group_ssid_len) 5493 { 5494 int force_freq = 0, pref_freq = 0; 5495 int ret = 0, res; 5496 enum wpa_driver_if_type iftype; 5497 const u8 *if_addr; 5498 struct wpa_ssid *ssid = NULL; 5499 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5500 5501 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5502 return -1; 5503 5504 if (persistent_id >= 0) { 5505 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5506 if (ssid == NULL || ssid->disabled != 2 || 5507 ssid->mode != WPAS_MODE_P2P_GO) 5508 return -1; 5509 } 5510 5511 os_free(wpa_s->global->add_psk); 5512 wpa_s->global->add_psk = NULL; 5513 5514 wpa_s->global->p2p_fail_on_wps_complete = 0; 5515 wpa_s->global->pending_p2ps_group = 0; 5516 wpa_s->global->pending_p2ps_group_freq = 0; 5517 wpa_s->p2ps_method_config_any = 0; 5518 5519 if (go_intent < 0) 5520 go_intent = wpa_s->conf->p2p_go_intent; 5521 5522 if (!auth) 5523 wpa_s->p2p_long_listen = 0; 5524 5525 wpa_s->p2p_wps_method = wps_method; 5526 wpa_s->p2p_persistent_group = !!persistent_group; 5527 wpa_s->p2p_persistent_id = persistent_id; 5528 wpa_s->p2p_go_intent = go_intent; 5529 wpa_s->p2p_connect_freq = freq; 5530 wpa_s->p2p_fallback_to_go_neg = 0; 5531 wpa_s->p2p_pd_before_go_neg = !!pd; 5532 wpa_s->p2p_go_ht40 = !!ht40; 5533 wpa_s->p2p_go_vht = !!vht; 5534 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5535 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5536 wpa_s->p2p_go_he = !!he; 5537 5538 if (pin) 5539 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5540 else if (wps_method == WPS_PIN_DISPLAY) { 5541 if (wps_generate_pin((unsigned int *) &ret) < 0) 5542 return -1; 5543 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5544 "%08d", ret); 5545 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5546 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5547 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5548 wpa_s->p2p_pin); 5549 } else if (wps_method == WPS_P2PS) { 5550 /* Force the P2Ps default PIN to be used */ 5551 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin)); 5552 } else 5553 wpa_s->p2p_pin[0] = '\0'; 5554 5555 if (join || auto_join) { 5556 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5557 if (auth) { 5558 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5559 "connect a running group from " MACSTR, 5560 MAC2STR(peer_addr)); 5561 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5562 return ret; 5563 } 5564 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5565 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5566 iface_addr) < 0) { 5567 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5568 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5569 dev_addr); 5570 } 5571 if (auto_join) { 5572 os_get_reltime(&wpa_s->p2p_auto_started); 5573 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5574 "%ld.%06ld", 5575 wpa_s->p2p_auto_started.sec, 5576 wpa_s->p2p_auto_started.usec); 5577 } 5578 wpa_s->user_initiated_pd = 1; 5579 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5580 auto_join, freq, 5581 group_ssid, group_ssid_len) < 0) 5582 return -1; 5583 return ret; 5584 } 5585 5586 size = P2P_MAX_PREF_CHANNELS; 5587 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5588 go_intent == 15, pref_freq_list, &size); 5589 if (res) 5590 return res; 5591 wpas_p2p_set_own_freq_preference(wpa_s, 5592 force_freq ? force_freq : pref_freq); 5593 5594 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5595 5596 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5597 5598 if (wpa_s->create_p2p_iface) { 5599 /* Prepare to add a new interface for the group */ 5600 iftype = WPA_IF_P2P_GROUP; 5601 if (go_intent == 15) 5602 iftype = WPA_IF_P2P_GO; 5603 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5604 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5605 "interface for the group"); 5606 return -1; 5607 } 5608 5609 if_addr = wpa_s->pending_interface_addr; 5610 } else { 5611 if (wpa_s->p2p_mgmt) 5612 if_addr = wpa_s->parent->own_addr; 5613 else 5614 if_addr = wpa_s->own_addr; 5615 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5616 } 5617 5618 if (auth) { 5619 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5620 go_intent, if_addr, 5621 force_freq, persistent_group, ssid, 5622 pref_freq) < 0) 5623 return -1; 5624 return ret; 5625 } 5626 5627 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5628 go_intent, if_addr, force_freq, 5629 persistent_group, ssid, pref_freq) < 0) { 5630 if (wpa_s->create_p2p_iface) 5631 wpas_p2p_remove_pending_group_interface(wpa_s); 5632 return -1; 5633 } 5634 return ret; 5635 } 5636 5637 5638 /** 5639 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5640 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5641 * @freq: Frequency of the channel in MHz 5642 * @duration: Duration of the stay on the channel in milliseconds 5643 * 5644 * This callback is called when the driver indicates that it has started the 5645 * requested remain-on-channel duration. 5646 */ 5647 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5648 unsigned int freq, unsigned int duration) 5649 { 5650 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5651 return; 5652 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)", 5653 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5654 wpa_s->roc_waiting_drv_freq, freq, duration); 5655 if (wpa_s->off_channel_freq && 5656 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5657 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5658 wpa_s->pending_listen_duration); 5659 wpa_s->pending_listen_freq = 0; 5660 } else { 5661 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5662 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5663 freq, duration); 5664 } 5665 } 5666 5667 5668 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5669 { 5670 /* Limit maximum Listen state time based on driver limitation. */ 5671 if (timeout > wpa_s->max_remain_on_chan) 5672 timeout = wpa_s->max_remain_on_chan; 5673 5674 return p2p_listen(wpa_s->global->p2p, timeout); 5675 } 5676 5677 5678 /** 5679 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5680 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5681 * @freq: Frequency of the channel in MHz 5682 * 5683 * This callback is called when the driver indicates that a remain-on-channel 5684 * operation has been completed, i.e., the duration on the requested channel 5685 * has timed out. 5686 */ 5687 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5688 unsigned int freq) 5689 { 5690 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5691 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5692 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5693 wpas_p2p_listen_work_done(wpa_s); 5694 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5695 return; 5696 if (wpa_s->p2p_long_listen > 0) 5697 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5698 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5699 return; /* P2P module started a new operation */ 5700 if (offchannel_pending_action_tx(wpa_s)) 5701 return; 5702 if (wpa_s->p2p_long_listen > 0) { 5703 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5704 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5705 } else { 5706 /* 5707 * When listen duration is over, stop listen & update p2p_state 5708 * to IDLE. 5709 */ 5710 p2p_stop_listen(wpa_s->global->p2p); 5711 } 5712 } 5713 5714 5715 /** 5716 * wpas_p2p_group_remove - Remove a P2P group 5717 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5718 * @ifname: Network interface name of the group interface or "*" to remove all 5719 * groups 5720 * Returns: 0 on success, -1 on failure 5721 * 5722 * This function is used to remove a P2P group. This can be used to disconnect 5723 * from a group in which the local end is a P2P Client or to end a P2P Group in 5724 * case the local end is the Group Owner. If a virtual network interface was 5725 * created for this group, that interface will be removed. Otherwise, only the 5726 * configured P2P group network will be removed from the interface. 5727 */ 5728 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5729 { 5730 struct wpa_global *global = wpa_s->global; 5731 struct wpa_supplicant *calling_wpa_s = wpa_s; 5732 5733 if (os_strcmp(ifname, "*") == 0) { 5734 struct wpa_supplicant *prev; 5735 wpa_s = global->ifaces; 5736 while (wpa_s) { 5737 prev = wpa_s; 5738 wpa_s = wpa_s->next; 5739 if (prev->p2p_group_interface != 5740 NOT_P2P_GROUP_INTERFACE || 5741 (prev->current_ssid && 5742 prev->current_ssid->p2p_group)) 5743 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5744 } 5745 return 0; 5746 } 5747 5748 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5749 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5750 break; 5751 } 5752 5753 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5754 } 5755 5756 5757 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5758 { 5759 unsigned int r; 5760 5761 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5762 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5763 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5764 int res; 5765 5766 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5767 &size, pref_freq_list); 5768 if (!res && size > 0) { 5769 i = 0; 5770 while (i < size && 5771 (!p2p_supported_freq(wpa_s->global->p2p, 5772 pref_freq_list[i]) || 5773 wpas_p2p_disallowed_freq(wpa_s->global, 5774 pref_freq_list[i]))) { 5775 wpa_printf(MSG_DEBUG, 5776 "P2P: preferred_freq_list[%d]=%d is disallowed", 5777 i, pref_freq_list[i]); 5778 i++; 5779 } 5780 if (i != size) { 5781 freq = pref_freq_list[i]; 5782 wpa_printf(MSG_DEBUG, 5783 "P2P: Using preferred_freq_list[%d]=%d", 5784 i, freq); 5785 } else { 5786 wpa_printf(MSG_DEBUG, 5787 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5788 } 5789 } else { 5790 wpa_printf(MSG_DEBUG, 5791 "P2P: No preferred frequency list available"); 5792 } 5793 } 5794 5795 if (freq == 2) { 5796 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5797 "band"); 5798 if (wpa_s->best_24_freq > 0 && 5799 p2p_supported_freq_go(wpa_s->global->p2p, 5800 wpa_s->best_24_freq)) { 5801 freq = wpa_s->best_24_freq; 5802 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5803 "channel: %d MHz", freq); 5804 } else { 5805 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5806 return -1; 5807 freq = 2412 + (r % 3) * 25; 5808 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5809 "channel: %d MHz", freq); 5810 } 5811 } 5812 5813 if (freq == 5) { 5814 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5815 "band"); 5816 if (wpa_s->best_5_freq > 0 && 5817 p2p_supported_freq_go(wpa_s->global->p2p, 5818 wpa_s->best_5_freq)) { 5819 freq = wpa_s->best_5_freq; 5820 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5821 "channel: %d MHz", freq); 5822 } else { 5823 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5824 return -1; 5825 freq = 5180 + (r % 4) * 20; 5826 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5827 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5828 "5 GHz channel for P2P group"); 5829 return -1; 5830 } 5831 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5832 "channel: %d MHz", freq); 5833 } 5834 } 5835 5836 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5837 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5838 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5839 wpa_s->hw.num_modes)) { 5840 /* 5841 * If freq is a DFS channel and DFS is offloaded to the 5842 * driver, allow P2P GO to use it. 5843 */ 5844 wpa_printf(MSG_DEBUG, "P2P: " 5845 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5846 __func__, freq); 5847 return freq; 5848 } 5849 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5850 "(%u MHz) is not supported for P2P uses", 5851 freq); 5852 return -1; 5853 } 5854 5855 return freq; 5856 } 5857 5858 5859 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5860 const struct p2p_channels *channels, 5861 int freq) 5862 { 5863 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5864 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5865 freq_included(wpa_s, channels, freq)) 5866 return 1; 5867 return 0; 5868 } 5869 5870 5871 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5872 struct p2p_go_neg_results *params, 5873 const struct p2p_channels *channels) 5874 { 5875 unsigned int i, r; 5876 5877 /* try all channels in operating class 115 */ 5878 for (i = 0; i < 4; i++) { 5879 params->freq = 5180 + i * 20; 5880 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5881 freq_included(wpa_s, channels, params->freq) && 5882 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5883 goto out; 5884 } 5885 5886 /* try all channels in operating class 124 */ 5887 for (i = 0; i < 4; i++) { 5888 params->freq = 5745 + i * 20; 5889 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5890 freq_included(wpa_s, channels, params->freq) && 5891 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5892 goto out; 5893 } 5894 5895 /* try social channel class 180 channel 2 */ 5896 params->freq = 58320 + 1 * 2160; 5897 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5898 freq_included(wpa_s, channels, params->freq) && 5899 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5900 goto out; 5901 5902 /* try all channels in reg. class 180 */ 5903 for (i = 0; i < 4; i++) { 5904 params->freq = 58320 + i * 2160; 5905 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5906 freq_included(wpa_s, channels, params->freq) && 5907 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5908 goto out; 5909 } 5910 5911 /* try some random selection of the social channels */ 5912 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5913 return; 5914 5915 for (i = 0; i < 3; i++) { 5916 params->freq = 2412 + ((r + i) % 3) * 25; 5917 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5918 goto out; 5919 } 5920 5921 /* try all other channels in operating class 81 */ 5922 for (i = 0; i < 11; i++) { 5923 params->freq = 2412 + i * 5; 5924 5925 /* skip social channels; covered in the previous loop */ 5926 if (params->freq == 2412 || 5927 params->freq == 2437 || 5928 params->freq == 2462) 5929 continue; 5930 5931 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5932 goto out; 5933 } 5934 5935 params->freq = 0; 5936 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5937 return; 5938 out: 5939 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5940 params->freq); 5941 } 5942 5943 5944 static int wpas_same_band(int freq1, int freq2) 5945 { 5946 enum hostapd_hw_mode mode1, mode2; 5947 u8 chan1, chan2; 5948 5949 mode1 = ieee80211_freq_to_chan(freq1, &chan1); 5950 mode2 = ieee80211_freq_to_chan(freq2, &chan2); 5951 if (mode1 == NUM_HOSTAPD_MODES) 5952 return 0; 5953 return mode1 == mode2; 5954 } 5955 5956 5957 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5958 struct p2p_go_neg_results *params, 5959 int freq, int vht_center_freq2, int ht40, 5960 int vht, int max_oper_chwidth, int he, 5961 const struct p2p_channels *channels) 5962 { 5963 struct wpa_used_freq_data *freqs; 5964 unsigned int cand; 5965 unsigned int num, i; 5966 int ignore_no_freqs = 0; 5967 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0; 5968 5969 os_memset(params, 0, sizeof(*params)); 5970 params->role_go = 1; 5971 params->ht40 = ht40; 5972 params->vht = vht; 5973 params->he = he; 5974 params->max_oper_chwidth = max_oper_chwidth; 5975 params->vht_center_freq2 = vht_center_freq2; 5976 5977 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5978 sizeof(struct wpa_used_freq_data)); 5979 if (!freqs) 5980 return -1; 5981 5982 num = get_shared_radio_freqs_data(wpa_s, freqs, 5983 wpa_s->num_multichan_concurrent); 5984 5985 if (wpa_s->current_ssid && 5986 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5987 wpa_s->wpa_state == WPA_COMPLETED) { 5988 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5989 __func__); 5990 5991 /* 5992 * If the frequency selection is done for an active P2P GO that 5993 * is not sharing a frequency, allow to select a new frequency 5994 * even if there are no unused frequencies as we are about to 5995 * move the P2P GO so its frequency can be re-used. 5996 */ 5997 for (i = 0; i < num; i++) { 5998 if (freqs[i].freq == wpa_s->current_ssid->frequency && 5999 freqs[i].flags == 0) { 6000 ignore_no_freqs = 1; 6001 break; 6002 } 6003 } 6004 } 6005 6006 /* try using the forced freq */ 6007 if (freq) { 6008 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) || 6009 !freq_included(wpa_s, channels, freq)) { 6010 wpa_printf(MSG_DEBUG, 6011 "P2P: Forced GO freq %d MHz disallowed", 6012 freq); 6013 goto fail; 6014 } 6015 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 6016 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 6017 ieee80211_is_dfs(freq, wpa_s->hw.modes, 6018 wpa_s->hw.num_modes)) { 6019 /* 6020 * If freq is a DFS channel and DFS is offloaded 6021 * to the driver, allow P2P GO to use it. 6022 */ 6023 wpa_printf(MSG_DEBUG, 6024 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded", 6025 __func__, freq); 6026 } else { 6027 wpa_printf(MSG_DEBUG, 6028 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses", 6029 freq); 6030 goto fail; 6031 } 6032 } 6033 6034 for (i = 0; i < num; i++) { 6035 if (freqs[i].freq == freq) { 6036 wpa_printf(MSG_DEBUG, 6037 "P2P: forced freq (%d MHz) is also shared", 6038 freq); 6039 params->freq = freq; 6040 goto success; 6041 } 6042 } 6043 6044 if (!ignore_no_freqs && !unused_channels) { 6045 wpa_printf(MSG_DEBUG, 6046 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 6047 freq); 6048 goto fail; 6049 } 6050 6051 wpa_printf(MSG_DEBUG, 6052 "P2P: force GO freq (%d MHz) on a free channel", 6053 freq); 6054 params->freq = freq; 6055 goto success; 6056 } 6057 6058 /* consider using one of the shared frequencies */ 6059 if (num && 6060 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) { 6061 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 6062 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6063 wpa_printf(MSG_DEBUG, 6064 "P2P: Use shared freq (%d MHz) for GO", 6065 cand); 6066 params->freq = cand; 6067 goto success; 6068 } 6069 6070 /* try using one of the shared freqs */ 6071 for (i = 0; i < num; i++) { 6072 if (wpas_p2p_supported_freq_go(wpa_s, channels, 6073 freqs[i].freq)) { 6074 wpa_printf(MSG_DEBUG, 6075 "P2P: Use shared freq (%d MHz) for GO", 6076 freqs[i].freq); 6077 params->freq = freqs[i].freq; 6078 goto success; 6079 } 6080 } 6081 } 6082 6083 if (!ignore_no_freqs && !unused_channels) { 6084 wpa_printf(MSG_DEBUG, 6085 "P2P: Cannot force GO on any of the channels we are already using"); 6086 goto fail; 6087 } 6088 6089 /* try using the setting from the configuration file */ 6090 if (wpa_s->conf->p2p_oper_reg_class == 81 && 6091 wpa_s->conf->p2p_oper_channel >= 1 && 6092 wpa_s->conf->p2p_oper_channel <= 11 && 6093 wpas_p2p_supported_freq_go( 6094 wpa_s, channels, 6095 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 6096 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 6097 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 6098 "frequency %d MHz", params->freq); 6099 goto success; 6100 } 6101 6102 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 6103 wpa_s->conf->p2p_oper_reg_class == 116 || 6104 wpa_s->conf->p2p_oper_reg_class == 117 || 6105 wpa_s->conf->p2p_oper_reg_class == 124 || 6106 wpa_s->conf->p2p_oper_reg_class == 125 || 6107 wpa_s->conf->p2p_oper_reg_class == 126 || 6108 wpa_s->conf->p2p_oper_reg_class == 127) && 6109 wpas_p2p_supported_freq_go(wpa_s, channels, 6110 5000 + 6111 5 * wpa_s->conf->p2p_oper_channel)) { 6112 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 6113 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 6114 "frequency %d MHz", params->freq); 6115 goto success; 6116 } 6117 6118 /* Try using best channels */ 6119 if (wpa_s->conf->p2p_oper_channel == 0 && 6120 wpa_s->best_overall_freq > 0 && 6121 wpas_p2p_supported_freq_go(wpa_s, channels, 6122 wpa_s->best_overall_freq)) { 6123 params->freq = wpa_s->best_overall_freq; 6124 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 6125 "channel %d MHz", params->freq); 6126 goto success; 6127 } 6128 6129 if (wpa_s->conf->p2p_oper_channel == 0 && 6130 wpa_s->best_24_freq > 0 && 6131 wpas_p2p_supported_freq_go(wpa_s, channels, 6132 wpa_s->best_24_freq)) { 6133 params->freq = wpa_s->best_24_freq; 6134 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 6135 "channel %d MHz", params->freq); 6136 goto success; 6137 } 6138 6139 if (wpa_s->conf->p2p_oper_channel == 0 && 6140 wpa_s->best_5_freq > 0 && 6141 wpas_p2p_supported_freq_go(wpa_s, channels, 6142 wpa_s->best_5_freq)) { 6143 params->freq = wpa_s->best_5_freq; 6144 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 6145 "channel %d MHz", params->freq); 6146 goto success; 6147 } 6148 6149 /* try using preferred channels */ 6150 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 6151 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6152 params->freq = cand; 6153 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 6154 "channels", params->freq); 6155 goto success; 6156 } 6157 6158 /* Try using a channel that allows VHT to be used with 80 MHz */ 6159 if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) { 6160 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6161 enum hostapd_hw_mode mode; 6162 struct hostapd_hw_modes *hwmode; 6163 u8 chan; 6164 6165 cand = wpa_s->p2p_group_common_freqs[i]; 6166 mode = ieee80211_freq_to_chan(cand, &chan); 6167 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6168 mode); 6169 if (!hwmode || 6170 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6171 BW80) != ALLOWED) 6172 continue; 6173 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6174 params->freq = cand; 6175 wpa_printf(MSG_DEBUG, 6176 "P2P: Use freq %d MHz common with the peer and allowing VHT80", 6177 params->freq); 6178 goto success; 6179 } 6180 } 6181 } 6182 6183 /* Try using a channel that allows HT to be used with 40 MHz on the same 6184 * band so that CSA can be used */ 6185 if (wpa_s->current_ssid && wpa_s->hw.modes && 6186 wpa_s->p2p_group_common_freqs) { 6187 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6188 enum hostapd_hw_mode mode; 6189 struct hostapd_hw_modes *hwmode; 6190 u8 chan; 6191 6192 cand = wpa_s->p2p_group_common_freqs[i]; 6193 mode = ieee80211_freq_to_chan(cand, &chan); 6194 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6195 mode); 6196 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6197 cand) || 6198 !hwmode || 6199 (wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6200 BW40MINUS) != ALLOWED && 6201 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6202 BW40PLUS) != ALLOWED)) 6203 continue; 6204 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6205 params->freq = cand; 6206 wpa_printf(MSG_DEBUG, 6207 "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band", 6208 params->freq); 6209 goto success; 6210 } 6211 } 6212 } 6213 6214 /* Try using one of the group common freqs on the same band so that CSA 6215 * can be used */ 6216 if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) { 6217 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6218 cand = wpa_s->p2p_group_common_freqs[i]; 6219 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6220 cand)) 6221 continue; 6222 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6223 params->freq = cand; 6224 wpa_printf(MSG_DEBUG, 6225 "P2P: Use freq %d MHz common with the peer and maintaining same band", 6226 params->freq); 6227 goto success; 6228 } 6229 } 6230 } 6231 6232 /* Try using one of the group common freqs */ 6233 if (wpa_s->p2p_group_common_freqs) { 6234 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6235 cand = wpa_s->p2p_group_common_freqs[i]; 6236 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6237 params->freq = cand; 6238 wpa_printf(MSG_DEBUG, 6239 "P2P: Use freq %d MHz common with the peer", 6240 params->freq); 6241 goto success; 6242 } 6243 } 6244 } 6245 6246 /* no preference, select some channel */ 6247 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 6248 6249 if (params->freq == 0) { 6250 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 6251 goto fail; 6252 } 6253 6254 success: 6255 os_free(freqs); 6256 return 0; 6257 fail: 6258 os_free(freqs); 6259 return -1; 6260 } 6261 6262 6263 static struct wpa_supplicant * 6264 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 6265 int go) 6266 { 6267 struct wpa_supplicant *group_wpa_s; 6268 6269 if (!wpas_p2p_create_iface(wpa_s)) { 6270 if (wpa_s->p2p_mgmt) { 6271 /* 6272 * We may be called on the p2p_dev interface which 6273 * cannot be used for group operations, so always use 6274 * the primary interface. 6275 */ 6276 wpa_s->parent->p2pdev = wpa_s; 6277 wpa_s = wpa_s->parent; 6278 } 6279 wpa_dbg(wpa_s, MSG_DEBUG, 6280 "P2P: Use primary interface for group operations"); 6281 wpa_s->p2p_first_connection_timeout = 0; 6282 if (wpa_s != wpa_s->p2pdev) 6283 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev); 6284 return wpa_s; 6285 } 6286 6287 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 6288 WPA_IF_P2P_CLIENT) < 0) { 6289 wpa_msg_global(wpa_s, MSG_ERROR, 6290 "P2P: Failed to add group interface"); 6291 return NULL; 6292 } 6293 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 6294 if (group_wpa_s == NULL) { 6295 wpa_msg_global(wpa_s, MSG_ERROR, 6296 "P2P: Failed to initialize group interface"); 6297 wpas_p2p_remove_pending_group_interface(wpa_s); 6298 return NULL; 6299 } 6300 6301 if (go && wpa_s->p2p_go_do_acs) { 6302 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs; 6303 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band; 6304 wpa_s->p2p_go_do_acs = 0; 6305 } 6306 6307 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 6308 group_wpa_s->ifname); 6309 group_wpa_s->p2p_first_connection_timeout = 0; 6310 return group_wpa_s; 6311 } 6312 6313 6314 /** 6315 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 6316 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 6317 * @persistent_group: Whether to create a persistent group 6318 * @freq: Frequency for the group or 0 to indicate no hardcoding 6319 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 6320 * @ht40: Start GO with 40 MHz channel width 6321 * @vht: Start GO with VHT support 6322 * @vht_chwidth: channel bandwidth for GO operating with VHT support 6323 * Returns: 0 on success, -1 on failure 6324 * 6325 * This function creates a new P2P group with the local end as the Group Owner, 6326 * i.e., without using Group Owner Negotiation. 6327 */ 6328 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 6329 int freq, int vht_center_freq2, int ht40, int vht, 6330 int max_oper_chwidth, int he) 6331 { 6332 struct p2p_go_neg_results params; 6333 6334 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6335 return -1; 6336 6337 os_free(wpa_s->global->add_psk); 6338 wpa_s->global->add_psk = NULL; 6339 6340 /* Make sure we are not running find during connection establishment */ 6341 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6342 wpas_p2p_stop_find_oper(wpa_s); 6343 6344 if (!wpa_s->p2p_go_do_acs) { 6345 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6346 if (freq < 0) 6347 return -1; 6348 } 6349 6350 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6351 ht40, vht, max_oper_chwidth, he, NULL)) 6352 return -1; 6353 6354 p2p_go_params(wpa_s->global->p2p, ¶ms); 6355 params.persistent_group = persistent_group; 6356 6357 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6358 if (wpa_s == NULL) 6359 return -1; 6360 wpas_start_wps_go(wpa_s, ¶ms, 0); 6361 6362 return 0; 6363 } 6364 6365 6366 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6367 struct wpa_ssid *params, int addr_allocated, 6368 int freq, int force_scan) 6369 { 6370 struct wpa_ssid *ssid; 6371 6372 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6373 if (wpa_s == NULL) 6374 return -1; 6375 if (force_scan) 6376 os_get_reltime(&wpa_s->scan_min_time); 6377 wpa_s->p2p_last_4way_hs_fail = NULL; 6378 6379 wpa_supplicant_ap_deinit(wpa_s); 6380 6381 ssid = wpa_config_add_network(wpa_s->conf); 6382 if (ssid == NULL) 6383 return -1; 6384 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6385 wpa_config_set_network_defaults(ssid); 6386 ssid->temporary = 1; 6387 ssid->proto = WPA_PROTO_RSN; 6388 ssid->pbss = params->pbss; 6389 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP : 6390 WPA_CIPHER_CCMP; 6391 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 6392 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6393 ssid->ssid = os_malloc(params->ssid_len); 6394 if (ssid->ssid == NULL) { 6395 wpa_config_remove_network(wpa_s->conf, ssid->id); 6396 return -1; 6397 } 6398 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6399 ssid->ssid_len = params->ssid_len; 6400 ssid->p2p_group = 1; 6401 ssid->export_keys = 1; 6402 if (params->psk_set) { 6403 os_memcpy(ssid->psk, params->psk, 32); 6404 ssid->psk_set = 1; 6405 } 6406 if (params->passphrase) 6407 ssid->passphrase = os_strdup(params->passphrase); 6408 6409 wpa_s->show_group_started = 1; 6410 wpa_s->p2p_in_invitation = 1; 6411 wpa_s->p2p_invite_go_freq = freq; 6412 wpa_s->p2p_go_group_formation_completed = 0; 6413 wpa_s->global->p2p_group_formation = wpa_s; 6414 6415 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6416 NULL); 6417 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6418 wpas_p2p_group_formation_timeout, 6419 wpa_s->p2pdev, NULL); 6420 wpa_supplicant_select_network(wpa_s, ssid); 6421 6422 return 0; 6423 } 6424 6425 6426 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6427 struct wpa_ssid *ssid, int addr_allocated, 6428 int force_freq, int neg_freq, 6429 int vht_center_freq2, int ht40, 6430 int vht, int max_oper_chwidth, int he, 6431 const struct p2p_channels *channels, 6432 int connection_timeout, int force_scan) 6433 { 6434 struct p2p_go_neg_results params; 6435 int go = 0, freq; 6436 6437 if (ssid->disabled != 2 || ssid->ssid == NULL) 6438 return -1; 6439 6440 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6441 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6442 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6443 "already running"); 6444 if (go == 0 && 6445 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6446 wpa_s->p2pdev, NULL)) { 6447 /* 6448 * This can happen if Invitation Response frame was lost 6449 * and the peer (GO of a persistent group) tries to 6450 * invite us again. Reschedule the timeout to avoid 6451 * terminating the wait for the connection too early 6452 * since we now know that the peer is still trying to 6453 * invite us instead of having already started the GO. 6454 */ 6455 wpa_printf(MSG_DEBUG, 6456 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6457 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6458 wpas_p2p_group_formation_timeout, 6459 wpa_s->p2pdev, NULL); 6460 } 6461 return 0; 6462 } 6463 6464 os_free(wpa_s->global->add_psk); 6465 wpa_s->global->add_psk = NULL; 6466 6467 /* Make sure we are not running find during connection establishment */ 6468 wpas_p2p_stop_find_oper(wpa_s); 6469 6470 wpa_s->p2p_fallback_to_go_neg = 0; 6471 6472 if (ssid->mode == WPAS_MODE_P2P_GO) { 6473 if (force_freq > 0) { 6474 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6475 if (freq < 0) 6476 return -1; 6477 } else { 6478 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6479 if (freq < 0 || 6480 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6481 freq = 0; 6482 } 6483 } else if (ssid->mode == WPAS_MODE_INFRA) { 6484 freq = neg_freq; 6485 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6486 struct os_reltime now; 6487 struct wpa_bss *bss = 6488 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6489 6490 os_get_reltime(&now); 6491 if (bss && 6492 !os_reltime_expired(&now, &bss->last_update, 5) && 6493 freq_included(wpa_s, channels, bss->freq)) 6494 freq = bss->freq; 6495 else 6496 freq = 0; 6497 } 6498 6499 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6500 force_scan); 6501 } else { 6502 return -1; 6503 } 6504 6505 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6506 ht40, vht, max_oper_chwidth, he, channels)) 6507 return -1; 6508 6509 params.role_go = 1; 6510 params.psk_set = ssid->psk_set; 6511 if (params.psk_set) 6512 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6513 if (ssid->passphrase) { 6514 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6515 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6516 "persistent group"); 6517 return -1; 6518 } 6519 os_strlcpy(params.passphrase, ssid->passphrase, 6520 sizeof(params.passphrase)); 6521 } 6522 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6523 params.ssid_len = ssid->ssid_len; 6524 params.persistent_group = 1; 6525 6526 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6527 if (wpa_s == NULL) 6528 return -1; 6529 6530 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6531 6532 wpa_s->p2p_first_connection_timeout = connection_timeout; 6533 wpas_start_wps_go(wpa_s, ¶ms, 0); 6534 6535 return 0; 6536 } 6537 6538 6539 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6540 struct wpabuf *proberesp_ies) 6541 { 6542 struct wpa_supplicant *wpa_s = ctx; 6543 if (wpa_s->ap_iface) { 6544 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6545 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6546 wpabuf_free(beacon_ies); 6547 wpabuf_free(proberesp_ies); 6548 return; 6549 } 6550 if (beacon_ies) { 6551 wpabuf_free(hapd->p2p_beacon_ie); 6552 hapd->p2p_beacon_ie = beacon_ies; 6553 } 6554 wpabuf_free(hapd->p2p_probe_resp_ie); 6555 hapd->p2p_probe_resp_ie = proberesp_ies; 6556 } else { 6557 wpabuf_free(beacon_ies); 6558 wpabuf_free(proberesp_ies); 6559 } 6560 wpa_supplicant_ap_update_beacon(wpa_s); 6561 } 6562 6563 6564 static void wpas_p2p_idle_update(void *ctx, int idle) 6565 { 6566 struct wpa_supplicant *wpa_s = ctx; 6567 if (!wpa_s->ap_iface) 6568 return; 6569 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6570 if (idle) { 6571 if (wpa_s->global->p2p_fail_on_wps_complete && 6572 wpa_s->p2p_in_provisioning) { 6573 wpas_p2p_grpform_fail_after_wps(wpa_s); 6574 return; 6575 } 6576 wpas_p2p_set_group_idle_timeout(wpa_s); 6577 } else 6578 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6579 } 6580 6581 6582 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6583 struct wpa_ssid *ssid) 6584 { 6585 struct p2p_group *group; 6586 struct p2p_group_config *cfg; 6587 6588 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6589 !ssid->p2p_group) 6590 return NULL; 6591 6592 cfg = os_zalloc(sizeof(*cfg)); 6593 if (cfg == NULL) 6594 return NULL; 6595 6596 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6597 cfg->persistent_group = 2; 6598 else if (ssid->p2p_persistent_group) 6599 cfg->persistent_group = 1; 6600 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6601 if (wpa_s->max_stations && 6602 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6603 cfg->max_clients = wpa_s->max_stations; 6604 else 6605 cfg->max_clients = wpa_s->conf->max_num_sta; 6606 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6607 cfg->ssid_len = ssid->ssid_len; 6608 cfg->freq = ssid->frequency; 6609 cfg->cb_ctx = wpa_s; 6610 cfg->ie_update = wpas_p2p_ie_update; 6611 cfg->idle_update = wpas_p2p_idle_update; 6612 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start) 6613 != 0; 6614 6615 group = p2p_group_init(wpa_s->global->p2p, cfg); 6616 if (group == NULL) 6617 os_free(cfg); 6618 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6619 p2p_group_notif_formation_done(group); 6620 wpa_s->p2p_group = group; 6621 return group; 6622 } 6623 6624 6625 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6626 int registrar) 6627 { 6628 struct wpa_ssid *ssid = wpa_s->current_ssid; 6629 6630 if (!wpa_s->p2p_in_provisioning) { 6631 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6632 "provisioning not in progress"); 6633 return; 6634 } 6635 6636 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6637 u8 go_dev_addr[ETH_ALEN]; 6638 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6639 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6640 ssid->ssid_len); 6641 /* Clear any stored provisioning info */ 6642 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6643 } 6644 6645 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6646 NULL); 6647 wpa_s->p2p_go_group_formation_completed = 1; 6648 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6649 /* 6650 * Use a separate timeout for initial data connection to 6651 * complete to allow the group to be removed automatically if 6652 * something goes wrong in this step before the P2P group idle 6653 * timeout mechanism is taken into use. 6654 */ 6655 wpa_dbg(wpa_s, MSG_DEBUG, 6656 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6657 P2P_MAX_INITIAL_CONN_WAIT); 6658 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6659 wpas_p2p_group_formation_timeout, 6660 wpa_s->p2pdev, NULL); 6661 /* Complete group formation on successful data connection. */ 6662 wpa_s->p2p_go_group_formation_completed = 0; 6663 } else if (ssid) { 6664 /* 6665 * Use a separate timeout for initial data connection to 6666 * complete to allow the group to be removed automatically if 6667 * the client does not complete data connection successfully. 6668 */ 6669 wpa_dbg(wpa_s, MSG_DEBUG, 6670 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6671 P2P_MAX_INITIAL_CONN_WAIT_GO); 6672 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6673 wpas_p2p_group_formation_timeout, 6674 wpa_s->p2pdev, NULL); 6675 /* 6676 * Complete group formation on first successful data connection 6677 */ 6678 wpa_s->p2p_go_group_formation_completed = 0; 6679 } 6680 if (wpa_s->global->p2p) 6681 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6682 wpas_group_formation_completed(wpa_s, 1, 0); 6683 } 6684 6685 6686 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6687 struct wps_event_fail *fail) 6688 { 6689 if (!wpa_s->p2p_in_provisioning) { 6690 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6691 "provisioning not in progress"); 6692 return; 6693 } 6694 6695 if (wpa_s->go_params) { 6696 p2p_clear_provisioning_info( 6697 wpa_s->global->p2p, 6698 wpa_s->go_params->peer_device_addr); 6699 } 6700 6701 wpas_notify_p2p_wps_failed(wpa_s, fail); 6702 6703 if (wpa_s == wpa_s->global->p2p_group_formation) { 6704 /* 6705 * Allow some time for the failed WPS negotiation exchange to 6706 * complete, but remove the group since group formation cannot 6707 * succeed after provisioning failure. 6708 */ 6709 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6710 wpa_s->global->p2p_fail_on_wps_complete = 1; 6711 eloop_deplete_timeout(0, 50000, 6712 wpas_p2p_group_formation_timeout, 6713 wpa_s->p2pdev, NULL); 6714 } 6715 } 6716 6717 6718 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6719 { 6720 if (!wpa_s->global->p2p_fail_on_wps_complete || 6721 !wpa_s->p2p_in_provisioning) 6722 return 0; 6723 6724 wpas_p2p_grpform_fail_after_wps(wpa_s); 6725 6726 return 1; 6727 } 6728 6729 6730 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6731 const char *config_method, 6732 enum wpas_p2p_prov_disc_use use, 6733 struct p2ps_provision *p2ps_prov) 6734 { 6735 u16 config_methods; 6736 6737 wpa_s->global->pending_p2ps_group = 0; 6738 wpa_s->global->pending_p2ps_group_freq = 0; 6739 wpa_s->p2p_fallback_to_go_neg = 0; 6740 wpa_s->pending_pd_use = NORMAL_PD; 6741 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6742 p2ps_prov->conncap = p2ps_group_capability( 6743 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6744 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6745 6746 wpa_printf(MSG_DEBUG, 6747 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6748 __func__, p2ps_prov->conncap, 6749 p2ps_prov->adv_id, p2ps_prov->conncap, 6750 p2ps_prov->status, p2ps_prov->info); 6751 6752 config_methods = 0; 6753 } else if (os_strncmp(config_method, "display", 7) == 0) 6754 config_methods = WPS_CONFIG_DISPLAY; 6755 else if (os_strncmp(config_method, "keypad", 6) == 0) 6756 config_methods = WPS_CONFIG_KEYPAD; 6757 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6758 os_strncmp(config_method, "pushbutton", 10) == 0) 6759 config_methods = WPS_CONFIG_PUSHBUTTON; 6760 else { 6761 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6762 os_free(p2ps_prov); 6763 return -1; 6764 } 6765 6766 if (use == WPAS_P2P_PD_AUTO) { 6767 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6768 wpa_s->pending_pd_config_methods = config_methods; 6769 wpa_s->p2p_auto_pd = 1; 6770 wpa_s->p2p_auto_join = 0; 6771 wpa_s->pending_pd_before_join = 0; 6772 wpa_s->auto_pd_scan_retry = 0; 6773 wpas_p2p_stop_find(wpa_s); 6774 wpa_s->p2p_join_scan_count = 0; 6775 os_get_reltime(&wpa_s->p2p_auto_started); 6776 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6777 wpa_s->p2p_auto_started.sec, 6778 wpa_s->p2p_auto_started.usec); 6779 wpas_p2p_join_scan(wpa_s, NULL); 6780 return 0; 6781 } 6782 6783 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6784 os_free(p2ps_prov); 6785 return -1; 6786 } 6787 6788 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6789 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6790 0, 1); 6791 } 6792 6793 6794 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6795 char *end) 6796 { 6797 return p2p_scan_result_text(ies, ies_len, buf, end); 6798 } 6799 6800 6801 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6802 { 6803 if (!offchannel_pending_action_tx(wpa_s)) 6804 return; 6805 6806 if (wpa_s->p2p_send_action_work) { 6807 wpas_p2p_free_send_action_work(wpa_s); 6808 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 6809 wpa_s, NULL); 6810 offchannel_send_action_done(wpa_s); 6811 } 6812 6813 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6814 "operation request"); 6815 offchannel_clear_pending_action_tx(wpa_s); 6816 } 6817 6818 6819 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6820 enum p2p_discovery_type type, 6821 unsigned int num_req_dev_types, const u8 *req_dev_types, 6822 const u8 *dev_id, unsigned int search_delay, 6823 u8 seek_cnt, const char **seek_string, int freq) 6824 { 6825 wpas_p2p_clear_pending_action_tx(wpa_s); 6826 wpa_s->p2p_long_listen = 0; 6827 6828 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6829 wpa_s->p2p_in_provisioning) { 6830 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s", 6831 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ? 6832 " (P2P disabled)" : "", 6833 wpa_s->p2p_in_provisioning ? 6834 " (p2p_in_provisioning)" : ""); 6835 return -1; 6836 } 6837 6838 wpa_supplicant_cancel_sched_scan(wpa_s); 6839 6840 return p2p_find(wpa_s->global->p2p, timeout, type, 6841 num_req_dev_types, req_dev_types, dev_id, 6842 search_delay, seek_cnt, seek_string, freq); 6843 } 6844 6845 6846 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6847 struct wpa_scan_results *scan_res) 6848 { 6849 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6850 6851 if (wpa_s->p2p_scan_work) { 6852 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6853 wpa_s->p2p_scan_work = NULL; 6854 radio_work_done(work); 6855 } 6856 6857 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6858 return; 6859 6860 /* 6861 * Indicate that results have been processed so that the P2P module can 6862 * continue pending tasks. 6863 */ 6864 p2p_scan_res_handled(wpa_s->global->p2p); 6865 } 6866 6867 6868 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6869 { 6870 wpas_p2p_clear_pending_action_tx(wpa_s); 6871 wpa_s->p2p_long_listen = 0; 6872 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6873 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6874 6875 if (wpa_s->global->p2p) 6876 p2p_stop_find(wpa_s->global->p2p); 6877 6878 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6879 wpa_printf(MSG_DEBUG, 6880 "P2P: Do not consider the scan results after stop_find"); 6881 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6882 } 6883 } 6884 6885 6886 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6887 { 6888 wpas_p2p_stop_find_oper(wpa_s); 6889 if (!wpa_s->global->pending_group_iface_for_p2ps) 6890 wpas_p2p_remove_pending_group_interface(wpa_s); 6891 } 6892 6893 6894 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6895 { 6896 struct wpa_supplicant *wpa_s = eloop_ctx; 6897 wpa_s->p2p_long_listen = 0; 6898 } 6899 6900 6901 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6902 { 6903 int res; 6904 6905 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6906 return -1; 6907 6908 if (wpa_s->p2p_lo_started) { 6909 wpa_printf(MSG_DEBUG, 6910 "P2P: Cannot start P2P listen, it is offloaded"); 6911 return -1; 6912 } 6913 6914 wpa_supplicant_cancel_sched_scan(wpa_s); 6915 wpas_p2p_clear_pending_action_tx(wpa_s); 6916 6917 if (timeout == 0) { 6918 /* 6919 * This is a request for unlimited Listen state. However, at 6920 * least for now, this is mapped to a Listen state for one 6921 * hour. 6922 */ 6923 timeout = 3600; 6924 } 6925 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6926 wpa_s->p2p_long_listen = 0; 6927 6928 /* 6929 * Stop previous find/listen operation to avoid trying to request a new 6930 * remain-on-channel operation while the driver is still running the 6931 * previous one. 6932 */ 6933 if (wpa_s->global->p2p) 6934 p2p_stop_find(wpa_s->global->p2p); 6935 6936 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6937 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6938 wpa_s->p2p_long_listen = timeout * 1000; 6939 eloop_register_timeout(timeout, 0, 6940 wpas_p2p_long_listen_timeout, 6941 wpa_s, NULL); 6942 } 6943 6944 return res; 6945 } 6946 6947 6948 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6949 u8 *buf, size_t len, int p2p_group) 6950 { 6951 struct wpabuf *p2p_ie; 6952 int ret; 6953 6954 if (wpa_s->global->p2p_disabled) 6955 return -1; 6956 /* 6957 * Advertize mandatory cross connection capability even on 6958 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6959 */ 6960 if (wpa_s->conf->p2p_disabled && p2p_group) 6961 return -1; 6962 if (wpa_s->global->p2p == NULL) 6963 return -1; 6964 if (bss == NULL) 6965 return -1; 6966 6967 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6968 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6969 p2p_group, p2p_ie); 6970 wpabuf_free(p2p_ie); 6971 6972 return ret; 6973 } 6974 6975 6976 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6977 const u8 *dst, const u8 *bssid, 6978 const u8 *ie, size_t ie_len, 6979 unsigned int rx_freq, int ssi_signal) 6980 { 6981 if (wpa_s->global->p2p_disabled) 6982 return 0; 6983 if (wpa_s->global->p2p == NULL) 6984 return 0; 6985 6986 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6987 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) { 6988 case P2P_PREQ_NOT_P2P: 6989 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6990 ssi_signal); 6991 /* fall through */ 6992 case P2P_PREQ_MALFORMED: 6993 case P2P_PREQ_NOT_LISTEN: 6994 case P2P_PREQ_NOT_PROCESSED: 6995 default: /* make gcc happy */ 6996 return 0; 6997 case P2P_PREQ_PROCESSED: 6998 return 1; 6999 } 7000 } 7001 7002 7003 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 7004 const u8 *sa, const u8 *bssid, 7005 u8 category, const u8 *data, size_t len, int freq) 7006 { 7007 if (wpa_s->global->p2p_disabled) 7008 return; 7009 if (wpa_s->global->p2p == NULL) 7010 return; 7011 7012 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 7013 freq); 7014 } 7015 7016 7017 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 7018 { 7019 unsigned int bands; 7020 7021 if (wpa_s->global->p2p_disabled) 7022 return; 7023 if (wpa_s->global->p2p == NULL) 7024 return; 7025 7026 bands = wpas_get_bands(wpa_s, NULL); 7027 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 7028 } 7029 7030 7031 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 7032 { 7033 p2p_group_deinit(wpa_s->p2p_group); 7034 wpa_s->p2p_group = NULL; 7035 7036 wpa_s->ap_configured_cb = NULL; 7037 wpa_s->ap_configured_cb_ctx = NULL; 7038 wpa_s->ap_configured_cb_data = NULL; 7039 wpa_s->connect_without_scan = NULL; 7040 } 7041 7042 7043 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 7044 { 7045 wpa_s->p2p_long_listen = 0; 7046 7047 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7048 return -1; 7049 7050 return p2p_reject(wpa_s->global->p2p, addr); 7051 } 7052 7053 7054 /* Invite to reinvoke a persistent group */ 7055 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 7056 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 7057 int vht_center_freq2, int ht40, int vht, int max_chwidth, 7058 int pref_freq, int he) 7059 { 7060 enum p2p_invite_role role; 7061 u8 *bssid = NULL; 7062 int force_freq = 0; 7063 int res; 7064 int no_pref_freq_given = pref_freq == 0; 7065 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 7066 7067 wpa_s->global->p2p_invite_group = NULL; 7068 if (peer_addr) 7069 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 7070 else 7071 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 7072 7073 wpa_s->p2p_persistent_go_freq = freq; 7074 wpa_s->p2p_go_ht40 = !!ht40; 7075 wpa_s->p2p_go_vht = !!vht; 7076 wpa_s->p2p_go_he = !!he; 7077 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 7078 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 7079 if (ssid->mode == WPAS_MODE_P2P_GO) { 7080 role = P2P_INVITE_ROLE_GO; 7081 if (peer_addr == NULL) { 7082 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 7083 "address in invitation command"); 7084 return -1; 7085 } 7086 if (wpas_p2p_create_iface(wpa_s)) { 7087 if (wpas_p2p_add_group_interface(wpa_s, 7088 WPA_IF_P2P_GO) < 0) { 7089 wpa_printf(MSG_ERROR, "P2P: Failed to " 7090 "allocate a new interface for the " 7091 "group"); 7092 return -1; 7093 } 7094 bssid = wpa_s->pending_interface_addr; 7095 } else if (wpa_s->p2p_mgmt) 7096 bssid = wpa_s->parent->own_addr; 7097 else 7098 bssid = wpa_s->own_addr; 7099 } else { 7100 role = P2P_INVITE_ROLE_CLIENT; 7101 peer_addr = ssid->bssid; 7102 } 7103 wpa_s->pending_invite_ssid_id = ssid->id; 7104 7105 size = P2P_MAX_PREF_CHANNELS; 7106 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 7107 role == P2P_INVITE_ROLE_GO, 7108 pref_freq_list, &size); 7109 if (res) 7110 return res; 7111 7112 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7113 return -1; 7114 7115 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 7116 7117 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 7118 no_pref_freq_given && pref_freq > 0 && 7119 wpa_s->num_multichan_concurrent > 1 && 7120 wpas_p2p_num_unused_channels(wpa_s) > 0) { 7121 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 7122 pref_freq); 7123 pref_freq = 0; 7124 } 7125 7126 /* 7127 * Stop any find/listen operations before invitation and possibly 7128 * connection establishment. 7129 */ 7130 wpas_p2p_stop_find_oper(wpa_s); 7131 7132 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 7133 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 7134 1, pref_freq, -1); 7135 } 7136 7137 7138 /* Invite to join an active group */ 7139 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 7140 const u8 *peer_addr, const u8 *go_dev_addr) 7141 { 7142 struct wpa_global *global = wpa_s->global; 7143 enum p2p_invite_role role; 7144 u8 *bssid = NULL; 7145 struct wpa_ssid *ssid; 7146 int persistent; 7147 int freq = 0, force_freq = 0, pref_freq = 0; 7148 int res; 7149 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 7150 7151 wpa_s->p2p_persistent_go_freq = 0; 7152 wpa_s->p2p_go_ht40 = 0; 7153 wpa_s->p2p_go_vht = 0; 7154 wpa_s->p2p_go_vht_center_freq2 = 0; 7155 wpa_s->p2p_go_max_oper_chwidth = 0; 7156 7157 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7158 if (os_strcmp(wpa_s->ifname, ifname) == 0) 7159 break; 7160 } 7161 if (wpa_s == NULL) { 7162 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 7163 return -1; 7164 } 7165 7166 ssid = wpa_s->current_ssid; 7167 if (ssid == NULL) { 7168 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 7169 "invitation"); 7170 return -1; 7171 } 7172 7173 wpa_s->global->p2p_invite_group = wpa_s; 7174 persistent = ssid->p2p_persistent_group && 7175 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr, 7176 ssid->ssid, ssid->ssid_len); 7177 7178 if (ssid->mode == WPAS_MODE_P2P_GO) { 7179 role = P2P_INVITE_ROLE_ACTIVE_GO; 7180 bssid = wpa_s->own_addr; 7181 if (go_dev_addr == NULL) 7182 go_dev_addr = wpa_s->global->p2p_dev_addr; 7183 freq = ssid->frequency; 7184 } else { 7185 role = P2P_INVITE_ROLE_CLIENT; 7186 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 7187 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 7188 "invite to current group"); 7189 return -1; 7190 } 7191 bssid = wpa_s->bssid; 7192 if (go_dev_addr == NULL && 7193 !is_zero_ether_addr(wpa_s->go_dev_addr)) 7194 go_dev_addr = wpa_s->go_dev_addr; 7195 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7196 (int) wpa_s->assoc_freq; 7197 } 7198 wpa_s->p2pdev->pending_invite_ssid_id = -1; 7199 7200 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7201 return -1; 7202 7203 size = P2P_MAX_PREF_CHANNELS; 7204 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 7205 role == P2P_INVITE_ROLE_ACTIVE_GO, 7206 pref_freq_list, &size); 7207 if (res) 7208 return res; 7209 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 7210 7211 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 7212 ssid->ssid, ssid->ssid_len, force_freq, 7213 go_dev_addr, persistent, pref_freq, -1); 7214 } 7215 7216 7217 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 7218 { 7219 struct wpa_ssid *ssid = wpa_s->current_ssid; 7220 u8 go_dev_addr[ETH_ALEN]; 7221 int persistent; 7222 int freq; 7223 u8 ip[3 * 4], *ip_ptr = NULL; 7224 char ip_addr[100]; 7225 7226 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 7227 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7228 wpa_s->p2pdev, NULL); 7229 } 7230 7231 if (!wpa_s->show_group_started || !ssid) 7232 return; 7233 7234 wpa_s->show_group_started = 0; 7235 if (!wpa_s->p2p_go_group_formation_completed && 7236 wpa_s->global->p2p_group_formation == wpa_s) { 7237 wpa_dbg(wpa_s, MSG_DEBUG, 7238 "P2P: Marking group formation completed on client on data connection"); 7239 wpa_s->p2p_go_group_formation_completed = 1; 7240 wpa_s->global->p2p_group_formation = NULL; 7241 wpa_s->p2p_in_provisioning = 0; 7242 wpa_s->p2p_in_invitation = 0; 7243 } 7244 7245 os_memset(go_dev_addr, 0, ETH_ALEN); 7246 if (ssid->bssid_set) 7247 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 7248 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 7249 ssid->ssid_len); 7250 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 7251 7252 if (wpa_s->global->p2p_group_formation == wpa_s) 7253 wpa_s->global->p2p_group_formation = NULL; 7254 7255 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7256 (int) wpa_s->assoc_freq; 7257 7258 ip_addr[0] = '\0'; 7259 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 7260 int res; 7261 7262 res = os_snprintf(ip_addr, sizeof(ip_addr), 7263 " ip_addr=%u.%u.%u.%u " 7264 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 7265 ip[0], ip[1], ip[2], ip[3], 7266 ip[4], ip[5], ip[6], ip[7], 7267 ip[8], ip[9], ip[10], ip[11]); 7268 if (os_snprintf_error(sizeof(ip_addr), res)) 7269 ip_addr[0] = '\0'; 7270 ip_ptr = ip; 7271 } 7272 7273 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 7274 ssid->passphrase == NULL && ssid->psk_set ? 7275 ssid->psk : NULL, 7276 ssid->passphrase, go_dev_addr, persistent, 7277 ip_addr); 7278 7279 if (persistent) 7280 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 7281 ssid, go_dev_addr); 7282 7283 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip_ptr); 7284 } 7285 7286 7287 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 7288 u32 interval1, u32 duration2, u32 interval2) 7289 { 7290 int ret; 7291 7292 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7293 return -1; 7294 7295 if (wpa_s->wpa_state < WPA_ASSOCIATED || 7296 wpa_s->current_ssid == NULL || 7297 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 7298 return -1; 7299 7300 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 7301 wpa_s->own_addr, wpa_s->assoc_freq, 7302 duration1, interval1, duration2, interval2); 7303 if (ret == 0) 7304 wpa_s->waiting_presence_resp = 1; 7305 7306 return ret; 7307 } 7308 7309 7310 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 7311 unsigned int interval) 7312 { 7313 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7314 return -1; 7315 7316 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 7317 } 7318 7319 7320 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 7321 { 7322 if (wpa_s->current_ssid == NULL) { 7323 /* 7324 * current_ssid can be cleared when P2P client interface gets 7325 * disconnected, so assume this interface was used as P2P 7326 * client. 7327 */ 7328 return 1; 7329 } 7330 return wpa_s->current_ssid->p2p_group && 7331 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 7332 } 7333 7334 7335 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 7336 { 7337 struct wpa_supplicant *wpa_s = eloop_ctx; 7338 7339 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 7340 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 7341 "disabled"); 7342 return; 7343 } 7344 7345 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7346 "group"); 7347 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7348 } 7349 7350 7351 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7352 { 7353 int timeout; 7354 7355 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7356 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7357 7358 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7359 return; 7360 7361 timeout = wpa_s->conf->p2p_group_idle; 7362 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7363 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7364 timeout = P2P_MAX_CLIENT_IDLE; 7365 7366 if (timeout == 0) 7367 return; 7368 7369 if (timeout < 0) { 7370 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7371 timeout = 0; /* special client mode no-timeout */ 7372 else 7373 return; 7374 } 7375 7376 if (wpa_s->p2p_in_provisioning) { 7377 /* 7378 * Use the normal group formation timeout during the 7379 * provisioning phase to avoid terminating this process too 7380 * early due to group idle timeout. 7381 */ 7382 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7383 "during provisioning"); 7384 return; 7385 } 7386 7387 if (wpa_s->show_group_started) { 7388 /* 7389 * Use the normal group formation timeout between the end of 7390 * the provisioning phase and completion of 4-way handshake to 7391 * avoid terminating this process too early due to group idle 7392 * timeout. 7393 */ 7394 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7395 "while waiting for initial 4-way handshake to " 7396 "complete"); 7397 return; 7398 } 7399 7400 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7401 timeout); 7402 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7403 wpa_s, NULL); 7404 } 7405 7406 7407 /* Returns 1 if the interface was removed */ 7408 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7409 u16 reason_code, const u8 *ie, size_t ie_len, 7410 int locally_generated) 7411 { 7412 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7413 return 0; 7414 7415 if (!locally_generated) 7416 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7417 ie_len); 7418 7419 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7420 wpa_s->current_ssid && 7421 wpa_s->current_ssid->p2p_group && 7422 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7423 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7424 "session is ending"); 7425 if (wpas_p2p_group_delete(wpa_s, 7426 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7427 > 0) 7428 return 1; 7429 } 7430 7431 return 0; 7432 } 7433 7434 7435 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7436 u16 reason_code, const u8 *ie, size_t ie_len, 7437 int locally_generated) 7438 { 7439 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7440 return; 7441 7442 if (!locally_generated) 7443 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7444 ie_len); 7445 } 7446 7447 7448 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7449 { 7450 struct p2p_data *p2p = wpa_s->global->p2p; 7451 7452 if (p2p == NULL) 7453 return; 7454 7455 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7456 return; 7457 7458 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7459 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7460 7461 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7462 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7463 7464 if (wpa_s->wps && 7465 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7466 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7467 7468 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7469 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7470 7471 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7472 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7473 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7474 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7475 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7476 } 7477 7478 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7479 p2p_set_sec_dev_types(p2p, 7480 (void *) wpa_s->conf->sec_device_type, 7481 wpa_s->conf->num_sec_device_types); 7482 7483 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7484 int i; 7485 p2p_remove_wps_vendor_extensions(p2p); 7486 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7487 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7488 continue; 7489 p2p_add_wps_vendor_extension( 7490 p2p, wpa_s->conf->wps_vendor_ext[i]); 7491 } 7492 } 7493 7494 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7495 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7496 char country[3]; 7497 country[0] = wpa_s->conf->country[0]; 7498 country[1] = wpa_s->conf->country[1]; 7499 country[2] = 0x04; 7500 p2p_set_country(p2p, country); 7501 } 7502 7503 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7504 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7505 wpa_s->conf->p2p_ssid_postfix ? 7506 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7507 0); 7508 } 7509 7510 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7511 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7512 7513 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7514 u8 reg_class, channel; 7515 int ret; 7516 unsigned int r; 7517 u8 channel_forced; 7518 7519 if (wpa_s->conf->p2p_listen_reg_class && 7520 wpa_s->conf->p2p_listen_channel) { 7521 reg_class = wpa_s->conf->p2p_listen_reg_class; 7522 channel = wpa_s->conf->p2p_listen_channel; 7523 channel_forced = 1; 7524 } else { 7525 reg_class = 81; 7526 /* 7527 * Pick one of the social channels randomly as the 7528 * listen channel. 7529 */ 7530 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7531 channel = 1; 7532 else 7533 channel = 1 + (r % 3) * 5; 7534 channel_forced = 0; 7535 } 7536 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7537 channel_forced); 7538 if (ret) 7539 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7540 "failed: %d", ret); 7541 } 7542 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7543 u8 op_reg_class, op_channel, cfg_op_channel; 7544 int ret = 0; 7545 unsigned int r; 7546 if (wpa_s->conf->p2p_oper_reg_class && 7547 wpa_s->conf->p2p_oper_channel) { 7548 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7549 op_channel = wpa_s->conf->p2p_oper_channel; 7550 cfg_op_channel = 1; 7551 } else { 7552 op_reg_class = 81; 7553 /* 7554 * Use random operation channel from (1, 6, 11) 7555 *if no other preference is indicated. 7556 */ 7557 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7558 op_channel = 1; 7559 else 7560 op_channel = 1 + (r % 3) * 5; 7561 cfg_op_channel = 0; 7562 } 7563 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7564 cfg_op_channel); 7565 if (ret) 7566 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7567 "failed: %d", ret); 7568 } 7569 7570 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7571 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7572 wpa_s->conf->p2p_pref_chan) < 0) { 7573 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7574 "update failed"); 7575 } 7576 7577 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7578 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7579 "update failed"); 7580 } 7581 } 7582 7583 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7584 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7585 } 7586 7587 7588 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7589 int duration) 7590 { 7591 if (!wpa_s->ap_iface) 7592 return -1; 7593 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7594 duration); 7595 } 7596 7597 7598 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7599 { 7600 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7601 return -1; 7602 7603 wpa_s->global->cross_connection = enabled; 7604 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7605 7606 if (!enabled) { 7607 struct wpa_supplicant *iface; 7608 7609 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7610 { 7611 if (iface->cross_connect_enabled == 0) 7612 continue; 7613 7614 iface->cross_connect_enabled = 0; 7615 iface->cross_connect_in_use = 0; 7616 wpa_msg_global(iface->p2pdev, MSG_INFO, 7617 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7618 iface->ifname, 7619 iface->cross_connect_uplink); 7620 } 7621 } 7622 7623 return 0; 7624 } 7625 7626 7627 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7628 { 7629 struct wpa_supplicant *iface; 7630 7631 if (!uplink->global->cross_connection) 7632 return; 7633 7634 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7635 if (!iface->cross_connect_enabled) 7636 continue; 7637 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7638 0) 7639 continue; 7640 if (iface->ap_iface == NULL) 7641 continue; 7642 if (iface->cross_connect_in_use) 7643 continue; 7644 7645 iface->cross_connect_in_use = 1; 7646 wpa_msg_global(iface->p2pdev, MSG_INFO, 7647 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7648 iface->ifname, iface->cross_connect_uplink); 7649 } 7650 } 7651 7652 7653 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7654 { 7655 struct wpa_supplicant *iface; 7656 7657 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7658 if (!iface->cross_connect_enabled) 7659 continue; 7660 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7661 0) 7662 continue; 7663 if (!iface->cross_connect_in_use) 7664 continue; 7665 7666 wpa_msg_global(iface->p2pdev, MSG_INFO, 7667 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7668 iface->ifname, iface->cross_connect_uplink); 7669 iface->cross_connect_in_use = 0; 7670 } 7671 } 7672 7673 7674 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7675 { 7676 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7677 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7678 wpa_s->cross_connect_disallowed) 7679 wpas_p2p_disable_cross_connect(wpa_s); 7680 else 7681 wpas_p2p_enable_cross_connect(wpa_s); 7682 if (!wpa_s->ap_iface && 7683 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7684 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7685 } 7686 7687 7688 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7689 { 7690 wpas_p2p_disable_cross_connect(wpa_s); 7691 if (!wpa_s->ap_iface && 7692 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7693 wpa_s, NULL)) 7694 wpas_p2p_set_group_idle_timeout(wpa_s); 7695 } 7696 7697 7698 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7699 { 7700 struct wpa_supplicant *iface; 7701 7702 if (!wpa_s->global->cross_connection) 7703 return; 7704 7705 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7706 if (iface == wpa_s) 7707 continue; 7708 if (iface->drv_flags & 7709 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7710 continue; 7711 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7712 iface != wpa_s->parent) 7713 continue; 7714 7715 wpa_s->cross_connect_enabled = 1; 7716 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7717 sizeof(wpa_s->cross_connect_uplink)); 7718 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7719 "%s to %s whenever uplink is available", 7720 wpa_s->ifname, wpa_s->cross_connect_uplink); 7721 7722 if (iface->ap_iface || iface->current_ssid == NULL || 7723 iface->current_ssid->mode != WPAS_MODE_INFRA || 7724 iface->cross_connect_disallowed || 7725 iface->wpa_state != WPA_COMPLETED) 7726 break; 7727 7728 wpa_s->cross_connect_in_use = 1; 7729 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 7730 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7731 wpa_s->ifname, wpa_s->cross_connect_uplink); 7732 break; 7733 } 7734 } 7735 7736 7737 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7738 { 7739 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7740 !wpa_s->p2p_in_provisioning) 7741 return 0; /* not P2P client operation */ 7742 7743 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7744 "session overlap"); 7745 if (wpa_s != wpa_s->p2pdev) 7746 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP); 7747 wpas_p2p_group_formation_failed(wpa_s, 0); 7748 return 1; 7749 } 7750 7751 7752 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7753 { 7754 struct wpa_supplicant *wpa_s = eloop_ctx; 7755 wpas_p2p_notif_pbc_overlap(wpa_s); 7756 } 7757 7758 7759 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7760 enum wpas_p2p_channel_update_trig trig) 7761 { 7762 struct p2p_channels chan, cli_chan; 7763 struct wpa_used_freq_data *freqs = NULL; 7764 unsigned int num = wpa_s->num_multichan_concurrent; 7765 7766 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7767 return; 7768 7769 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7770 if (!freqs) 7771 return; 7772 7773 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7774 7775 os_memset(&chan, 0, sizeof(chan)); 7776 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7777 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7778 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7779 "channel list"); 7780 return; 7781 } 7782 7783 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7784 7785 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7786 7787 /* 7788 * The used frequencies map changed, so it is possible that a GO is 7789 * using a channel that is no longer valid for P2P use. It is also 7790 * possible that due to policy consideration, it would be preferable to 7791 * move it to a frequency already used by other station interfaces. 7792 */ 7793 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7794 7795 os_free(freqs); 7796 } 7797 7798 7799 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7800 struct wpa_scan_results *scan_res) 7801 { 7802 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7803 } 7804 7805 7806 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7807 { 7808 struct wpa_global *global = wpa_s->global; 7809 int found = 0; 7810 const u8 *peer; 7811 7812 if (global->p2p == NULL) 7813 return -1; 7814 7815 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7816 7817 if (wpa_s->pending_interface_name[0] && 7818 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7819 found = 1; 7820 7821 peer = p2p_get_go_neg_peer(global->p2p); 7822 if (peer) { 7823 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7824 MACSTR, MAC2STR(peer)); 7825 p2p_unauthorize(global->p2p, peer); 7826 found = 1; 7827 } 7828 7829 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7830 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7831 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7832 found = 1; 7833 } 7834 7835 if (wpa_s->pending_pd_before_join) { 7836 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7837 wpa_s->pending_pd_before_join = 0; 7838 found = 1; 7839 } 7840 7841 wpas_p2p_stop_find(wpa_s); 7842 7843 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7844 if (wpa_s == global->p2p_group_formation && 7845 (wpa_s->p2p_in_provisioning || 7846 wpa_s->parent->pending_interface_type == 7847 WPA_IF_P2P_CLIENT)) { 7848 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7849 "formation found - cancelling", 7850 wpa_s->ifname); 7851 found = 1; 7852 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7853 wpa_s->p2pdev, NULL); 7854 if (wpa_s->p2p_in_provisioning) { 7855 wpas_group_formation_completed(wpa_s, 0, 0); 7856 break; 7857 } 7858 wpas_p2p_group_delete(wpa_s, 7859 P2P_GROUP_REMOVAL_REQUESTED); 7860 break; 7861 } else if (wpa_s->p2p_in_invitation) { 7862 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7863 wpa_s->ifname); 7864 found = 1; 7865 wpas_p2p_group_formation_failed(wpa_s, 0); 7866 break; 7867 } 7868 } 7869 7870 if (!found) { 7871 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7872 return -1; 7873 } 7874 7875 return 0; 7876 } 7877 7878 7879 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7880 { 7881 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7882 return; 7883 7884 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7885 "being available anymore"); 7886 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7887 } 7888 7889 7890 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7891 int freq_24, int freq_5, int freq_overall) 7892 { 7893 struct p2p_data *p2p = wpa_s->global->p2p; 7894 if (p2p == NULL) 7895 return; 7896 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7897 } 7898 7899 7900 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7901 { 7902 u8 peer[ETH_ALEN]; 7903 struct p2p_data *p2p = wpa_s->global->p2p; 7904 7905 if (p2p == NULL) 7906 return -1; 7907 7908 if (hwaddr_aton(addr, peer)) 7909 return -1; 7910 7911 return p2p_unauthorize(p2p, peer); 7912 } 7913 7914 7915 /** 7916 * wpas_p2p_disconnect - Disconnect from a P2P Group 7917 * @wpa_s: Pointer to wpa_supplicant data 7918 * Returns: 0 on success, -1 on failure 7919 * 7920 * This can be used to disconnect from a group in which the local end is a P2P 7921 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7922 * virtual network interface was created for this group, that interface will be 7923 * removed. Otherwise, only the configured P2P group network will be removed 7924 * from the interface. 7925 */ 7926 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7927 { 7928 7929 if (wpa_s == NULL) 7930 return -1; 7931 7932 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7933 -1 : 0; 7934 } 7935 7936 7937 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7938 { 7939 int ret; 7940 7941 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7942 return 0; 7943 7944 ret = p2p_in_progress(wpa_s->global->p2p); 7945 if (ret == 0) { 7946 /* 7947 * Check whether there is an ongoing WPS provisioning step (or 7948 * other parts of group formation) on another interface since 7949 * p2p_in_progress() does not report this to avoid issues for 7950 * scans during such provisioning step. 7951 */ 7952 if (wpa_s->global->p2p_group_formation && 7953 wpa_s->global->p2p_group_formation != wpa_s) { 7954 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7955 "in group formation", 7956 wpa_s->global->p2p_group_formation->ifname); 7957 ret = 1; 7958 } 7959 } 7960 7961 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7962 struct os_reltime now; 7963 os_get_reltime(&now); 7964 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7965 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7966 /* Wait for the first client has expired */ 7967 wpa_s->global->p2p_go_wait_client.sec = 0; 7968 } else { 7969 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7970 ret = 1; 7971 } 7972 } 7973 7974 return ret; 7975 } 7976 7977 7978 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7979 struct wpa_ssid *ssid) 7980 { 7981 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7982 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7983 wpa_s->p2pdev, NULL) > 0) { 7984 /** 7985 * Remove the network by scheduling the group formation 7986 * timeout to happen immediately. The teardown code 7987 * needs to be scheduled to run asynch later so that we 7988 * don't delete data from under ourselves unexpectedly. 7989 * Calling wpas_p2p_group_formation_timeout directly 7990 * causes a series of crashes in WPS failure scenarios. 7991 */ 7992 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7993 "P2P group network getting removed"); 7994 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7995 wpa_s->p2pdev, NULL); 7996 } 7997 } 7998 7999 8000 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 8001 const u8 *addr, const u8 *ssid, 8002 size_t ssid_len) 8003 { 8004 struct wpa_ssid *s; 8005 size_t i; 8006 8007 for (s = wpa_s->conf->ssid; s; s = s->next) { 8008 if (s->disabled != 2) 8009 continue; 8010 if (ssid && 8011 (ssid_len != s->ssid_len || 8012 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 8013 continue; 8014 if (addr == NULL) { 8015 if (s->mode == WPAS_MODE_P2P_GO) 8016 return s; 8017 continue; 8018 } 8019 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 8020 return s; /* peer is GO in the persistent group */ 8021 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 8022 continue; 8023 for (i = 0; i < s->num_p2p_clients; i++) { 8024 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 8025 addr, ETH_ALEN) == 0) 8026 return s; /* peer is P2P client in persistent 8027 * group */ 8028 } 8029 } 8030 8031 return NULL; 8032 } 8033 8034 8035 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 8036 const u8 *addr) 8037 { 8038 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 8039 wpa_s->p2pdev, NULL) > 0) { 8040 /* 8041 * This can happen if WPS provisioning step is not terminated 8042 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 8043 * peer was able to connect, there is no need to time out group 8044 * formation after this, though. In addition, this is used with 8045 * the initial connection wait on the GO as a separate formation 8046 * timeout and as such, expected to be hit after the initial WPS 8047 * provisioning step. 8048 */ 8049 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 8050 8051 if (!wpa_s->p2p_go_group_formation_completed && 8052 !wpa_s->group_formation_reported) { 8053 /* 8054 * GO has not yet notified group formation success since 8055 * the WPS step was not completed cleanly. Do that 8056 * notification now since the P2P Client was able to 8057 * connect and as such, must have received the 8058 * credential from the WPS step. 8059 */ 8060 if (wpa_s->global->p2p) 8061 p2p_wps_success_cb(wpa_s->global->p2p, addr); 8062 wpas_group_formation_completed(wpa_s, 1, 0); 8063 } 8064 } 8065 if (!wpa_s->p2p_go_group_formation_completed) { 8066 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 8067 wpa_s->p2p_go_group_formation_completed = 1; 8068 wpa_s->global->p2p_group_formation = NULL; 8069 wpa_s->p2p_in_provisioning = 0; 8070 wpa_s->p2p_in_invitation = 0; 8071 } 8072 wpa_s->global->p2p_go_wait_client.sec = 0; 8073 if (addr == NULL) 8074 return; 8075 wpas_p2p_add_persistent_group_client(wpa_s, addr); 8076 } 8077 8078 8079 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 8080 int group_added) 8081 { 8082 struct wpa_supplicant *group = wpa_s; 8083 int ret = 0; 8084 8085 if (wpa_s->global->p2p_group_formation) 8086 group = wpa_s->global->p2p_group_formation; 8087 wpa_s = wpa_s->global->p2p_init_wpa_s; 8088 offchannel_send_action_done(wpa_s); 8089 if (group_added) 8090 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 8091 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 8092 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 8093 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 8094 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 8095 wpa_s->p2p_go_vht_center_freq2, 8096 wpa_s->p2p_persistent_id, 8097 wpa_s->p2p_pd_before_go_neg, 8098 wpa_s->p2p_go_ht40, 8099 wpa_s->p2p_go_vht, 8100 wpa_s->p2p_go_max_oper_chwidth, 8101 wpa_s->p2p_go_he, NULL, 0); 8102 return ret; 8103 } 8104 8105 8106 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 8107 { 8108 int res; 8109 8110 if (!wpa_s->p2p_fallback_to_go_neg || 8111 wpa_s->p2p_in_provisioning <= 5) 8112 return 0; 8113 8114 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 8115 return 0; /* peer operating as a GO */ 8116 8117 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 8118 "fallback to GO Negotiation"); 8119 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 8120 "reason=GO-not-found"); 8121 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 8122 8123 return res == 1 ? 2 : 1; 8124 } 8125 8126 8127 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 8128 { 8129 struct wpa_supplicant *ifs; 8130 8131 if (wpa_s->wpa_state > WPA_SCANNING) { 8132 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 8133 "concurrent operation", 8134 wpa_s->conf->p2p_search_delay); 8135 return wpa_s->conf->p2p_search_delay; 8136 } 8137 8138 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 8139 radio_list) { 8140 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 8141 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 8142 "delay due to concurrent operation on " 8143 "interface %s", 8144 wpa_s->conf->p2p_search_delay, 8145 ifs->ifname); 8146 return wpa_s->conf->p2p_search_delay; 8147 } 8148 } 8149 8150 return 0; 8151 } 8152 8153 8154 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 8155 struct wpa_ssid *s, const u8 *addr, 8156 int iface_addr) 8157 { 8158 struct psk_list_entry *psk, *tmp; 8159 int changed = 0; 8160 8161 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 8162 list) { 8163 if ((iface_addr && !psk->p2p && 8164 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 8165 (!iface_addr && psk->p2p && 8166 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 8167 wpa_dbg(wpa_s, MSG_DEBUG, 8168 "P2P: Remove persistent group PSK list entry for " 8169 MACSTR " p2p=%u", 8170 MAC2STR(psk->addr), psk->p2p); 8171 dl_list_del(&psk->list); 8172 os_free(psk); 8173 changed++; 8174 } 8175 } 8176 8177 return changed; 8178 } 8179 8180 8181 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 8182 const u8 *p2p_dev_addr, 8183 const u8 *psk, size_t psk_len) 8184 { 8185 struct wpa_ssid *ssid = wpa_s->current_ssid; 8186 struct wpa_ssid *persistent; 8187 struct psk_list_entry *p, *last; 8188 8189 if (psk_len != sizeof(p->psk)) 8190 return; 8191 8192 if (p2p_dev_addr) { 8193 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 8194 " p2p_dev_addr=" MACSTR, 8195 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 8196 if (is_zero_ether_addr(p2p_dev_addr)) 8197 p2p_dev_addr = NULL; 8198 } else { 8199 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 8200 MAC2STR(mac_addr)); 8201 } 8202 8203 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 8204 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 8205 /* To be added to persistent group once created */ 8206 if (wpa_s->global->add_psk == NULL) { 8207 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 8208 if (wpa_s->global->add_psk == NULL) 8209 return; 8210 } 8211 p = wpa_s->global->add_psk; 8212 if (p2p_dev_addr) { 8213 p->p2p = 1; 8214 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8215 } else { 8216 p->p2p = 0; 8217 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8218 } 8219 os_memcpy(p->psk, psk, psk_len); 8220 return; 8221 } 8222 8223 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 8224 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 8225 return; 8226 } 8227 8228 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 8229 ssid->ssid_len); 8230 if (!persistent) { 8231 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 8232 return; 8233 } 8234 8235 p = os_zalloc(sizeof(*p)); 8236 if (p == NULL) 8237 return; 8238 if (p2p_dev_addr) { 8239 p->p2p = 1; 8240 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8241 } else { 8242 p->p2p = 0; 8243 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8244 } 8245 os_memcpy(p->psk, psk, psk_len); 8246 8247 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 8248 (last = dl_list_last(&persistent->psk_list, 8249 struct psk_list_entry, list))) { 8250 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 8251 MACSTR " (p2p=%u) to make room for a new one", 8252 MAC2STR(last->addr), last->p2p); 8253 dl_list_del(&last->list); 8254 os_free(last); 8255 } 8256 8257 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent, 8258 p2p_dev_addr ? p2p_dev_addr : mac_addr, 8259 p2p_dev_addr == NULL); 8260 if (p2p_dev_addr) { 8261 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 8262 MACSTR, MAC2STR(p2p_dev_addr)); 8263 } else { 8264 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 8265 MAC2STR(mac_addr)); 8266 } 8267 dl_list_add(&persistent->psk_list, &p->list); 8268 8269 if (wpa_s->p2pdev->conf->update_config && 8270 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 8271 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 8272 } 8273 8274 8275 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 8276 struct wpa_ssid *s, const u8 *addr, 8277 int iface_addr) 8278 { 8279 int res; 8280 8281 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 8282 if (res > 0 && wpa_s->conf->update_config && 8283 wpa_config_write(wpa_s->confname, wpa_s->conf)) 8284 wpa_dbg(wpa_s, MSG_DEBUG, 8285 "P2P: Failed to update configuration"); 8286 } 8287 8288 8289 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 8290 const u8 *peer, int iface_addr) 8291 { 8292 struct hostapd_data *hapd; 8293 struct hostapd_wpa_psk *psk, *prev, *rem; 8294 struct sta_info *sta; 8295 8296 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 8297 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 8298 return; 8299 8300 /* Remove per-station PSK entry */ 8301 hapd = wpa_s->ap_iface->bss[0]; 8302 prev = NULL; 8303 psk = hapd->conf->ssid.wpa_psk; 8304 while (psk) { 8305 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 8306 (!iface_addr && 8307 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 8308 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 8309 MACSTR " iface_addr=%d", 8310 MAC2STR(peer), iface_addr); 8311 if (prev) 8312 prev->next = psk->next; 8313 else 8314 hapd->conf->ssid.wpa_psk = psk->next; 8315 rem = psk; 8316 psk = psk->next; 8317 os_free(rem); 8318 } else { 8319 prev = psk; 8320 psk = psk->next; 8321 } 8322 } 8323 8324 /* Disconnect from group */ 8325 if (iface_addr) 8326 sta = ap_get_sta(hapd, peer); 8327 else 8328 sta = ap_get_sta_p2p(hapd, peer); 8329 if (sta) { 8330 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 8331 " (iface_addr=%d) from group", 8332 MAC2STR(peer), iface_addr); 8333 hostapd_drv_sta_deauth(hapd, sta->addr, 8334 WLAN_REASON_DEAUTH_LEAVING); 8335 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 8336 } 8337 } 8338 8339 8340 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 8341 int iface_addr) 8342 { 8343 struct wpa_ssid *s; 8344 struct wpa_supplicant *w; 8345 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8346 8347 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8348 8349 /* Remove from any persistent group */ 8350 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8351 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8352 continue; 8353 if (!iface_addr) 8354 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8355 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8356 } 8357 8358 /* Remove from any operating group */ 8359 for (w = wpa_s->global->ifaces; w; w = w->next) 8360 wpas_p2p_remove_client_go(w, peer, iface_addr); 8361 } 8362 8363 8364 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8365 { 8366 struct wpa_supplicant *wpa_s = eloop_ctx; 8367 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8368 } 8369 8370 8371 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8372 { 8373 struct wpa_supplicant *wpa_s = eloop_ctx; 8374 8375 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8376 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8377 } 8378 8379 8380 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8381 struct wpa_ssid *ssid) 8382 { 8383 struct wpa_supplicant *iface; 8384 8385 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8386 if (!iface->current_ssid || 8387 iface->current_ssid->frequency == freq || 8388 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8389 !iface->current_ssid->p2p_group)) 8390 continue; 8391 8392 /* Remove the connection with least priority */ 8393 if (!wpas_is_p2p_prioritized(iface)) { 8394 /* STA connection has priority over existing 8395 * P2P connection, so remove the interface. */ 8396 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8397 eloop_register_timeout(0, 0, 8398 wpas_p2p_group_freq_conflict, 8399 iface, NULL); 8400 /* If connection in progress is P2P connection, do not 8401 * proceed for the connection. */ 8402 if (wpa_s == iface) 8403 return -1; 8404 else 8405 return 0; 8406 } else { 8407 /* P2P connection has priority, disable the STA network 8408 */ 8409 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8410 ssid); 8411 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8412 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8413 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8414 ETH_ALEN); 8415 /* If P2P connection is in progress, continue 8416 * connecting...*/ 8417 if (wpa_s == iface) 8418 return 0; 8419 else 8420 return -1; 8421 } 8422 } 8423 8424 return 0; 8425 } 8426 8427 8428 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8429 { 8430 struct wpa_ssid *ssid = wpa_s->current_ssid; 8431 8432 if (ssid == NULL || !ssid->p2p_group) 8433 return 0; 8434 8435 if (wpa_s->p2p_last_4way_hs_fail && 8436 wpa_s->p2p_last_4way_hs_fail == ssid) { 8437 u8 go_dev_addr[ETH_ALEN]; 8438 struct wpa_ssid *persistent; 8439 8440 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8441 ssid->ssid, 8442 ssid->ssid_len) <= 0) { 8443 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8444 goto disconnect; 8445 } 8446 8447 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8448 MACSTR, MAC2STR(go_dev_addr)); 8449 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr, 8450 ssid->ssid, 8451 ssid->ssid_len); 8452 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8453 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8454 goto disconnect; 8455 } 8456 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 8457 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8458 persistent->id); 8459 disconnect: 8460 wpa_s->p2p_last_4way_hs_fail = NULL; 8461 /* 8462 * Remove the group from a timeout to avoid issues with caller 8463 * continuing to use the interface if this is on a P2P group 8464 * interface. 8465 */ 8466 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8467 wpa_s, NULL); 8468 return 1; 8469 } 8470 8471 wpa_s->p2p_last_4way_hs_fail = ssid; 8472 return 0; 8473 } 8474 8475 8476 #ifdef CONFIG_WPS_NFC 8477 8478 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8479 struct wpabuf *p2p) 8480 { 8481 struct wpabuf *ret; 8482 size_t wsc_len; 8483 8484 if (p2p == NULL) { 8485 wpabuf_free(wsc); 8486 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8487 return NULL; 8488 } 8489 8490 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8491 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8492 if (ret == NULL) { 8493 wpabuf_free(wsc); 8494 wpabuf_free(p2p); 8495 return NULL; 8496 } 8497 8498 wpabuf_put_be16(ret, wsc_len); 8499 if (wsc) 8500 wpabuf_put_buf(ret, wsc); 8501 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8502 wpabuf_put_buf(ret, p2p); 8503 8504 wpabuf_free(wsc); 8505 wpabuf_free(p2p); 8506 wpa_hexdump_buf(MSG_DEBUG, 8507 "P2P: Generated NFC connection handover message", ret); 8508 8509 if (ndef && ret) { 8510 struct wpabuf *tmp; 8511 tmp = ndef_build_p2p(ret); 8512 wpabuf_free(ret); 8513 if (tmp == NULL) { 8514 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8515 return NULL; 8516 } 8517 ret = tmp; 8518 } 8519 8520 return ret; 8521 } 8522 8523 8524 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8525 struct wpa_ssid **ssid, u8 *go_dev_addr) 8526 { 8527 struct wpa_supplicant *iface; 8528 8529 if (go_dev_addr) 8530 os_memset(go_dev_addr, 0, ETH_ALEN); 8531 if (ssid) 8532 *ssid = NULL; 8533 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8534 if (iface->wpa_state < WPA_ASSOCIATING || 8535 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8536 !iface->current_ssid->p2p_group || 8537 iface->current_ssid->mode != WPAS_MODE_INFRA) 8538 continue; 8539 if (ssid) 8540 *ssid = iface->current_ssid; 8541 if (go_dev_addr) 8542 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8543 return iface->assoc_freq; 8544 } 8545 return 0; 8546 } 8547 8548 8549 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8550 int ndef) 8551 { 8552 struct wpabuf *wsc, *p2p; 8553 struct wpa_ssid *ssid; 8554 u8 go_dev_addr[ETH_ALEN]; 8555 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8556 8557 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8558 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8559 return NULL; 8560 } 8561 8562 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8563 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8564 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8565 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8566 return NULL; 8567 } 8568 8569 if (cli_freq == 0) { 8570 wsc = wps_build_nfc_handover_req_p2p( 8571 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8572 } else 8573 wsc = NULL; 8574 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8575 go_dev_addr, ssid ? ssid->ssid : NULL, 8576 ssid ? ssid->ssid_len : 0); 8577 8578 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8579 } 8580 8581 8582 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8583 int ndef, int tag) 8584 { 8585 struct wpabuf *wsc, *p2p; 8586 struct wpa_ssid *ssid; 8587 u8 go_dev_addr[ETH_ALEN]; 8588 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8589 8590 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8591 return NULL; 8592 8593 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8594 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8595 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8596 return NULL; 8597 8598 if (cli_freq == 0) { 8599 wsc = wps_build_nfc_handover_sel_p2p( 8600 wpa_s->parent->wps, 8601 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8602 DEV_PW_NFC_CONNECTION_HANDOVER, 8603 wpa_s->conf->wps_nfc_dh_pubkey, 8604 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8605 } else 8606 wsc = NULL; 8607 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8608 go_dev_addr, ssid ? ssid->ssid : NULL, 8609 ssid ? ssid->ssid_len : 0); 8610 8611 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8612 } 8613 8614 8615 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8616 struct p2p_nfc_params *params) 8617 { 8618 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8619 "connection handover (freq=%d)", 8620 params->go_freq); 8621 8622 if (params->go_freq && params->go_ssid_len) { 8623 wpa_s->p2p_wps_method = WPS_NFC; 8624 wpa_s->pending_join_wps_method = WPS_NFC; 8625 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8626 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8627 ETH_ALEN); 8628 return wpas_p2p_join_start(wpa_s, params->go_freq, 8629 params->go_ssid, 8630 params->go_ssid_len); 8631 } 8632 8633 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8634 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8635 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8636 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8637 wpa_s->p2p_go_he, 8638 params->go_ssid_len ? params->go_ssid : NULL, 8639 params->go_ssid_len); 8640 } 8641 8642 8643 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8644 struct p2p_nfc_params *params, int tag) 8645 { 8646 int res, persistent; 8647 struct wpa_ssid *ssid; 8648 8649 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8650 "connection handover"); 8651 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8652 ssid = wpa_s->current_ssid; 8653 if (ssid == NULL) 8654 continue; 8655 if (ssid->mode != WPAS_MODE_P2P_GO) 8656 continue; 8657 if (wpa_s->ap_iface == NULL) 8658 continue; 8659 break; 8660 } 8661 if (wpa_s == NULL) { 8662 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8663 return -1; 8664 } 8665 8666 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 8667 DEV_PW_NFC_CONNECTION_HANDOVER && 8668 !wpa_s->p2pdev->p2p_oob_dev_pw) { 8669 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8670 return -1; 8671 } 8672 res = wpas_ap_wps_add_nfc_pw( 8673 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 8674 wpa_s->p2pdev->p2p_oob_dev_pw, 8675 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 8676 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 8677 if (res) 8678 return res; 8679 8680 if (!tag) { 8681 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8682 return 0; 8683 } 8684 8685 if (!params->peer || 8686 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8687 return 0; 8688 8689 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8690 " to join", MAC2STR(params->peer->p2p_device_addr)); 8691 8692 wpa_s->global->p2p_invite_group = wpa_s; 8693 persistent = ssid->p2p_persistent_group && 8694 wpas_p2p_get_persistent(wpa_s->p2pdev, 8695 params->peer->p2p_device_addr, 8696 ssid->ssid, ssid->ssid_len); 8697 wpa_s->p2pdev->pending_invite_ssid_id = -1; 8698 8699 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8700 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8701 ssid->ssid, ssid->ssid_len, ssid->frequency, 8702 wpa_s->global->p2p_dev_addr, persistent, 0, 8703 wpa_s->p2pdev->p2p_oob_dev_pw_id); 8704 } 8705 8706 8707 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8708 struct p2p_nfc_params *params, 8709 int forced_freq) 8710 { 8711 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8712 "connection handover"); 8713 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8714 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8715 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8716 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8717 wpa_s->p2p_go_he, NULL, 0); 8718 } 8719 8720 8721 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8722 struct p2p_nfc_params *params, 8723 int forced_freq) 8724 { 8725 int res; 8726 8727 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8728 "connection handover"); 8729 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8730 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8731 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8732 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8733 wpa_s->p2p_go_he, NULL, 0); 8734 if (res) 8735 return res; 8736 8737 res = wpas_p2p_listen(wpa_s, 60); 8738 if (res) { 8739 p2p_unauthorize(wpa_s->global->p2p, 8740 params->peer->p2p_device_addr); 8741 } 8742 8743 return res; 8744 } 8745 8746 8747 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8748 const struct wpabuf *data, 8749 int sel, int tag, int forced_freq) 8750 { 8751 const u8 *pos, *end; 8752 u16 len, id; 8753 struct p2p_nfc_params params; 8754 int res; 8755 8756 os_memset(¶ms, 0, sizeof(params)); 8757 params.sel = sel; 8758 8759 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8760 8761 pos = wpabuf_head(data); 8762 end = pos + wpabuf_len(data); 8763 8764 if (end - pos < 2) { 8765 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8766 "attributes"); 8767 return -1; 8768 } 8769 len = WPA_GET_BE16(pos); 8770 pos += 2; 8771 if (len > end - pos) { 8772 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8773 "attributes"); 8774 return -1; 8775 } 8776 params.wsc_attr = pos; 8777 params.wsc_len = len; 8778 pos += len; 8779 8780 if (end - pos < 2) { 8781 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8782 "attributes"); 8783 return -1; 8784 } 8785 len = WPA_GET_BE16(pos); 8786 pos += 2; 8787 if (len > end - pos) { 8788 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8789 "attributes"); 8790 return -1; 8791 } 8792 params.p2p_attr = pos; 8793 params.p2p_len = len; 8794 pos += len; 8795 8796 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8797 params.wsc_attr, params.wsc_len); 8798 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8799 params.p2p_attr, params.p2p_len); 8800 if (pos < end) { 8801 wpa_hexdump(MSG_DEBUG, 8802 "P2P: Ignored extra data after P2P attributes", 8803 pos, end - pos); 8804 } 8805 8806 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8807 if (res) 8808 return res; 8809 8810 if (params.next_step == NO_ACTION) 8811 return 0; 8812 8813 if (params.next_step == BOTH_GO) { 8814 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8815 MAC2STR(params.peer->p2p_device_addr)); 8816 return 0; 8817 } 8818 8819 if (params.next_step == PEER_CLIENT) { 8820 if (!is_zero_ether_addr(params.go_dev_addr)) { 8821 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8822 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8823 " ssid=\"%s\"", 8824 MAC2STR(params.peer->p2p_device_addr), 8825 params.go_freq, 8826 MAC2STR(params.go_dev_addr), 8827 wpa_ssid_txt(params.go_ssid, 8828 params.go_ssid_len)); 8829 } else { 8830 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8831 "peer=" MACSTR " freq=%d", 8832 MAC2STR(params.peer->p2p_device_addr), 8833 params.go_freq); 8834 } 8835 return 0; 8836 } 8837 8838 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8839 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8840 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8841 return 0; 8842 } 8843 8844 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8845 wpa_s->p2p_oob_dev_pw = NULL; 8846 8847 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8848 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8849 "received"); 8850 return -1; 8851 } 8852 8853 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8854 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8855 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8856 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8857 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8858 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8859 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8860 8861 if (tag) { 8862 if (id < 0x10) { 8863 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8864 "peer OOB Device Password Id %u", id); 8865 return -1; 8866 } 8867 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8868 "Device Password Id %u", id); 8869 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8870 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8871 params.oob_dev_pw_len - 8872 WPS_OOB_PUBKEY_HASH_LEN - 2); 8873 wpa_s->p2p_oob_dev_pw_id = id; 8874 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8875 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8876 params.oob_dev_pw_len - 8877 WPS_OOB_PUBKEY_HASH_LEN - 2); 8878 if (wpa_s->p2p_oob_dev_pw == NULL) 8879 return -1; 8880 8881 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8882 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8883 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8884 return -1; 8885 } else { 8886 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8887 "without Device Password"); 8888 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8889 } 8890 8891 switch (params.next_step) { 8892 case NO_ACTION: 8893 case BOTH_GO: 8894 case PEER_CLIENT: 8895 /* already covered above */ 8896 return 0; 8897 case JOIN_GROUP: 8898 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8899 case AUTH_JOIN: 8900 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8901 case INIT_GO_NEG: 8902 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8903 case RESP_GO_NEG: 8904 /* TODO: use own OOB Dev Pw */ 8905 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8906 } 8907 8908 return -1; 8909 } 8910 8911 8912 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8913 const struct wpabuf *data, int forced_freq) 8914 { 8915 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8916 return -1; 8917 8918 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8919 } 8920 8921 8922 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8923 const struct wpabuf *req, 8924 const struct wpabuf *sel, int forced_freq) 8925 { 8926 struct wpabuf *tmp; 8927 int ret; 8928 8929 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8930 return -1; 8931 8932 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8933 8934 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8935 wpabuf_head(req), wpabuf_len(req)); 8936 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8937 wpabuf_head(sel), wpabuf_len(sel)); 8938 if (forced_freq) 8939 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8940 tmp = ndef_parse_p2p(init ? sel : req); 8941 if (tmp == NULL) { 8942 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8943 return -1; 8944 } 8945 8946 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8947 forced_freq); 8948 wpabuf_free(tmp); 8949 8950 return ret; 8951 } 8952 8953 8954 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8955 { 8956 const u8 *if_addr; 8957 int go_intent = wpa_s->conf->p2p_go_intent; 8958 struct wpa_supplicant *iface; 8959 8960 if (wpa_s->global->p2p == NULL) 8961 return -1; 8962 8963 if (!enabled) { 8964 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8965 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8966 { 8967 if (!iface->ap_iface) 8968 continue; 8969 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8970 } 8971 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8972 0, NULL); 8973 if (wpa_s->p2p_nfc_tag_enabled) 8974 wpas_p2p_remove_pending_group_interface(wpa_s); 8975 wpa_s->p2p_nfc_tag_enabled = 0; 8976 return 0; 8977 } 8978 8979 if (wpa_s->global->p2p_disabled) 8980 return -1; 8981 8982 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8983 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8984 wpa_s->conf->wps_nfc_dev_pw == NULL || 8985 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8986 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8987 "to allow static handover cases"); 8988 return -1; 8989 } 8990 8991 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8992 8993 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8994 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8995 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8996 if (wpa_s->p2p_oob_dev_pw == NULL) 8997 return -1; 8998 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8999 9000 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 9001 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 9002 /* 9003 * P2P Group Interface present and the command came on group 9004 * interface, so enable the token for the current interface. 9005 */ 9006 wpa_s->create_p2p_iface = 0; 9007 } else { 9008 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 9009 } 9010 9011 if (wpa_s->create_p2p_iface) { 9012 enum wpa_driver_if_type iftype; 9013 /* Prepare to add a new interface for the group */ 9014 iftype = WPA_IF_P2P_GROUP; 9015 if (go_intent == 15) 9016 iftype = WPA_IF_P2P_GO; 9017 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 9018 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 9019 "interface for the group"); 9020 return -1; 9021 } 9022 9023 if_addr = wpa_s->pending_interface_addr; 9024 } else if (wpa_s->p2p_mgmt) 9025 if_addr = wpa_s->parent->own_addr; 9026 else 9027 if_addr = wpa_s->own_addr; 9028 9029 wpa_s->p2p_nfc_tag_enabled = enabled; 9030 9031 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 9032 struct hostapd_data *hapd; 9033 if (iface->ap_iface == NULL) 9034 continue; 9035 hapd = iface->ap_iface->bss[0]; 9036 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 9037 hapd->conf->wps_nfc_dh_pubkey = 9038 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 9039 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 9040 hapd->conf->wps_nfc_dh_privkey = 9041 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 9042 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 9043 hapd->conf->wps_nfc_dev_pw = 9044 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 9045 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 9046 9047 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 9048 wpa_dbg(iface, MSG_DEBUG, 9049 "P2P: Failed to enable NFC Tag for GO"); 9050 } 9051 } 9052 p2p_set_authorized_oob_dev_pw_id( 9053 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 9054 if_addr); 9055 9056 return 0; 9057 } 9058 9059 #endif /* CONFIG_WPS_NFC */ 9060 9061 9062 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 9063 struct wpa_used_freq_data *freqs, 9064 unsigned int num) 9065 { 9066 u8 curr_chan, cand, chan; 9067 unsigned int i; 9068 9069 /* 9070 * If possible, optimize the Listen channel to be a channel that is 9071 * already used by one of the other interfaces. 9072 */ 9073 if (!wpa_s->conf->p2p_optimize_listen_chan) 9074 return; 9075 9076 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 9077 return; 9078 9079 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 9080 for (i = 0, cand = 0; i < num; i++) { 9081 ieee80211_freq_to_chan(freqs[i].freq, &chan); 9082 if (curr_chan == chan) { 9083 cand = 0; 9084 break; 9085 } 9086 9087 if (chan == 1 || chan == 6 || chan == 11) 9088 cand = chan; 9089 } 9090 9091 if (cand) { 9092 wpa_dbg(wpa_s, MSG_DEBUG, 9093 "P2P: Update Listen channel to %u based on operating channel", 9094 cand); 9095 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 9096 } 9097 } 9098 9099 9100 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 9101 { 9102 struct hostapd_config *conf; 9103 struct p2p_go_neg_results params; 9104 struct csa_settings csa_settings; 9105 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 9106 int old_freq = current_ssid->frequency; 9107 int ret; 9108 9109 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 9110 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 9111 return -1; 9112 } 9113 9114 /* 9115 * TODO: This function may not always work correctly. For example, 9116 * when we have a running GO and a BSS on a DFS channel. 9117 */ 9118 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) { 9119 wpa_dbg(wpa_s, MSG_DEBUG, 9120 "P2P CSA: Failed to select new frequency for GO"); 9121 return -1; 9122 } 9123 9124 if (current_ssid->frequency == params.freq) { 9125 wpa_dbg(wpa_s, MSG_DEBUG, 9126 "P2P CSA: Selected same frequency - not moving GO"); 9127 return 0; 9128 } 9129 9130 conf = hostapd_config_defaults(); 9131 if (!conf) { 9132 wpa_dbg(wpa_s, MSG_DEBUG, 9133 "P2P CSA: Failed to allocate default config"); 9134 return -1; 9135 } 9136 9137 current_ssid->frequency = params.freq; 9138 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 9139 wpa_dbg(wpa_s, MSG_DEBUG, 9140 "P2P CSA: Failed to create new GO config"); 9141 ret = -1; 9142 goto out; 9143 } 9144 9145 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 9146 wpa_dbg(wpa_s, MSG_DEBUG, 9147 "P2P CSA: CSA to a different band is not supported"); 9148 ret = -1; 9149 goto out; 9150 } 9151 9152 os_memset(&csa_settings, 0, sizeof(csa_settings)); 9153 csa_settings.cs_count = P2P_GO_CSA_COUNT; 9154 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 9155 csa_settings.freq_params.freq = params.freq; 9156 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 9157 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 9158 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 9159 9160 if (conf->ieee80211ac) { 9161 int freq1 = 0, freq2 = 0; 9162 u8 chan, opclass; 9163 9164 if (ieee80211_freq_to_channel_ext(params.freq, 9165 conf->secondary_channel, 9166 conf->vht_oper_chwidth, 9167 &opclass, &chan) == 9168 NUM_HOSTAPD_MODES) { 9169 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 9170 ret = -1; 9171 goto out; 9172 } 9173 9174 if (conf->vht_oper_centr_freq_seg0_idx) 9175 freq1 = ieee80211_chan_to_freq( 9176 NULL, opclass, 9177 conf->vht_oper_centr_freq_seg0_idx); 9178 9179 if (conf->vht_oper_centr_freq_seg1_idx) 9180 freq2 = ieee80211_chan_to_freq( 9181 NULL, opclass, 9182 conf->vht_oper_centr_freq_seg1_idx); 9183 9184 if (freq1 < 0 || freq2 < 0) { 9185 wpa_dbg(wpa_s, MSG_DEBUG, 9186 "P2P CSA: Selected invalid VHT center freqs"); 9187 ret = -1; 9188 goto out; 9189 } 9190 9191 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 9192 csa_settings.freq_params.center_freq1 = freq1; 9193 csa_settings.freq_params.center_freq2 = freq2; 9194 9195 switch (conf->vht_oper_chwidth) { 9196 case VHT_CHANWIDTH_80MHZ: 9197 case VHT_CHANWIDTH_80P80MHZ: 9198 csa_settings.freq_params.bandwidth = 80; 9199 break; 9200 case VHT_CHANWIDTH_160MHZ: 9201 csa_settings.freq_params.bandwidth = 160; 9202 break; 9203 } 9204 } 9205 9206 ret = ap_switch_channel(wpa_s, &csa_settings); 9207 out: 9208 current_ssid->frequency = old_freq; 9209 hostapd_config_free(conf); 9210 return ret; 9211 } 9212 9213 9214 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 9215 { 9216 struct p2p_go_neg_results params; 9217 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 9218 9219 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 9220 9221 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 9222 current_ssid->frequency); 9223 9224 /* Stop the AP functionality */ 9225 /* TODO: Should do this in a way that does not indicated to possible 9226 * P2P Clients in the group that the group is terminated. */ 9227 wpa_supplicant_ap_deinit(wpa_s); 9228 9229 /* Reselect the GO frequency */ 9230 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) { 9231 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 9232 wpas_p2p_group_delete(wpa_s, 9233 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9234 return; 9235 } 9236 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 9237 params.freq); 9238 9239 if (params.freq && 9240 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 9241 wpa_printf(MSG_DEBUG, 9242 "P2P: Selected freq (%u MHz) is not valid for P2P", 9243 params.freq); 9244 wpas_p2p_group_delete(wpa_s, 9245 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9246 return; 9247 } 9248 9249 /* Update the frequency */ 9250 current_ssid->frequency = params.freq; 9251 wpa_s->connect_without_scan = current_ssid; 9252 wpa_s->reassociate = 1; 9253 wpa_s->disconnected = 0; 9254 wpa_supplicant_req_scan(wpa_s, 0, 0); 9255 } 9256 9257 9258 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 9259 { 9260 struct wpa_supplicant *wpa_s = eloop_ctx; 9261 9262 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 9263 return; 9264 9265 wpas_p2p_go_update_common_freqs(wpa_s); 9266 9267 /* Do not move GO in the middle of a CSA */ 9268 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9269 wpa_printf(MSG_DEBUG, 9270 "P2P: CSA is in progress - not moving GO"); 9271 return; 9272 } 9273 9274 /* 9275 * First, try a channel switch flow. If it is not supported or fails, 9276 * take down the GO and bring it up again. 9277 */ 9278 if (wpas_p2p_move_go_csa(wpa_s) < 0) 9279 wpas_p2p_move_go_no_csa(wpa_s); 9280 } 9281 9282 9283 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 9284 { 9285 struct wpa_supplicant *wpa_s = eloop_ctx; 9286 struct wpa_used_freq_data *freqs = NULL; 9287 unsigned int num = wpa_s->num_multichan_concurrent; 9288 9289 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 9290 if (!freqs) 9291 return; 9292 9293 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 9294 9295 /* Previous attempt to move a GO was not possible -- try again. */ 9296 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 9297 WPAS_P2P_CHANNEL_UPDATE_ANY); 9298 9299 os_free(freqs); 9300 } 9301 9302 9303 /* 9304 * Consider moving a GO from its currently used frequency: 9305 * 1. It is possible that due to regulatory consideration the frequency 9306 * can no longer be used and there is a need to evacuate the GO. 9307 * 2. It is possible that due to MCC considerations, it would be preferable 9308 * to move the GO to a channel that is currently used by some other 9309 * station interface. 9310 * 9311 * In case a frequency that became invalid is once again valid, cancel a 9312 * previously initiated GO frequency change. 9313 */ 9314 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 9315 struct wpa_used_freq_data *freqs, 9316 unsigned int num) 9317 { 9318 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 9319 unsigned int timeout; 9320 int freq; 9321 int dfs_offload; 9322 9323 wpas_p2p_go_update_common_freqs(wpa_s); 9324 9325 freq = wpa_s->current_ssid->frequency; 9326 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 9327 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes); 9328 for (i = 0, invalid_freq = 0; i < num; i++) { 9329 if (freqs[i].freq == freq) { 9330 flags = freqs[i].flags; 9331 9332 /* The channel is invalid, must change it */ 9333 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) && 9334 !dfs_offload) { 9335 wpa_dbg(wpa_s, MSG_DEBUG, 9336 "P2P: Freq=%d MHz no longer valid for GO", 9337 freq); 9338 invalid_freq = 1; 9339 } 9340 } else if (freqs[i].flags == 0) { 9341 /* Freq is not used by any other station interface */ 9342 continue; 9343 } else if (!p2p_supported_freq(wpa_s->global->p2p, 9344 freqs[i].freq) && !dfs_offload) { 9345 /* Freq is not valid for P2P use cases */ 9346 continue; 9347 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9348 P2P_GO_FREQ_MOVE_SCM) { 9349 policy_move = 1; 9350 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9351 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 9352 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9353 policy_move = 1; 9354 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 9355 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9356 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9357 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9358 policy_move = 1; 9359 } else if ((wpa_s->drv_flags & 9360 WPA_DRIVER_FLAGS_AP_CSA) && 9361 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9362 u8 chan; 9363 9364 /* 9365 * We do not support CSA between bands, so move 9366 * GO only within the same band. 9367 */ 9368 if (wpa_s->ap_iface->current_mode->mode == 9369 ieee80211_freq_to_chan(freqs[i].freq, 9370 &chan)) 9371 policy_move = 1; 9372 } 9373 } 9374 } 9375 9376 wpa_dbg(wpa_s, MSG_DEBUG, 9377 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9378 invalid_freq, policy_move, flags); 9379 9380 /* 9381 * The channel is valid, or we are going to have a policy move, so 9382 * cancel timeout. 9383 */ 9384 if (!invalid_freq || policy_move) { 9385 wpa_dbg(wpa_s, MSG_DEBUG, 9386 "P2P: Cancel a GO move from freq=%d MHz", freq); 9387 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9388 9389 if (wpas_p2p_in_progress(wpa_s)) { 9390 wpa_dbg(wpa_s, MSG_DEBUG, 9391 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9392 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9393 wpa_s, NULL); 9394 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9395 wpas_p2p_reconsider_moving_go, 9396 wpa_s, NULL); 9397 return; 9398 } 9399 } 9400 9401 if (!invalid_freq && (!policy_move || flags != 0)) { 9402 wpa_dbg(wpa_s, MSG_DEBUG, 9403 "P2P: Not initiating a GO frequency change"); 9404 return; 9405 } 9406 9407 /* 9408 * Do not consider moving GO if it is in the middle of a CSA. When the 9409 * CSA is finished this flow should be retriggered. 9410 */ 9411 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9412 wpa_dbg(wpa_s, MSG_DEBUG, 9413 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9414 return; 9415 } 9416 9417 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9418 timeout = P2P_GO_FREQ_CHANGE_TIME; 9419 else 9420 timeout = 0; 9421 9422 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9423 freq, timeout); 9424 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9425 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9426 } 9427 9428 9429 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9430 struct wpa_used_freq_data *freqs, 9431 unsigned int num, 9432 enum wpas_p2p_channel_update_trig trig) 9433 { 9434 struct wpa_supplicant *ifs; 9435 9436 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9437 NULL); 9438 9439 /* 9440 * Travers all the radio interfaces, and for each GO interface, check 9441 * if there is a need to move the GO from the frequency it is using, 9442 * or in case the frequency is valid again, cancel the evacuation flow. 9443 */ 9444 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9445 radio_list) { 9446 if (ifs->current_ssid == NULL || 9447 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9448 continue; 9449 9450 /* 9451 * The GO was just started or completed channel switch, no need 9452 * to move it. 9453 */ 9454 if (wpa_s == ifs && 9455 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9456 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9457 wpa_dbg(wpa_s, MSG_DEBUG, 9458 "P2P: GO move - schedule re-consideration"); 9459 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9460 wpas_p2p_reconsider_moving_go, 9461 wpa_s, NULL); 9462 continue; 9463 } 9464 9465 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9466 } 9467 } 9468 9469 9470 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9471 { 9472 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9473 return; 9474 9475 wpas_p2p_update_channel_list(wpa_s, 9476 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9477 } 9478 9479 9480 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9481 { 9482 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9483 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9484 "the management interface is being removed"); 9485 wpas_p2p_deinit_global(wpa_s->global); 9486 } 9487 } 9488 9489 9490 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9491 { 9492 if (wpa_s->ap_iface->bss) 9493 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9494 wpas_p2p_group_deinit(wpa_s); 9495 } 9496 9497 9498 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq, 9499 unsigned int period, unsigned int interval, 9500 unsigned int count) 9501 { 9502 struct p2p_data *p2p = wpa_s->global->p2p; 9503 u8 *device_types; 9504 size_t dev_types_len; 9505 struct wpabuf *buf; 9506 int ret; 9507 9508 if (wpa_s->p2p_lo_started) { 9509 wpa_dbg(wpa_s, MSG_DEBUG, 9510 "P2P Listen offload is already started"); 9511 return 0; 9512 } 9513 9514 if (wpa_s->global->p2p == NULL || 9515 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) { 9516 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported"); 9517 return -1; 9518 } 9519 9520 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 9521 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u", 9522 freq); 9523 return -1; 9524 } 9525 9526 /* Get device type */ 9527 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) * 9528 WPS_DEV_TYPE_LEN; 9529 device_types = os_malloc(dev_types_len); 9530 if (!device_types) 9531 return -1; 9532 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN); 9533 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type, 9534 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN); 9535 9536 /* Get Probe Response IE(s) */ 9537 buf = p2p_build_probe_resp_template(p2p, freq); 9538 if (!buf) { 9539 os_free(device_types); 9540 return -1; 9541 } 9542 9543 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count, 9544 device_types, dev_types_len, 9545 wpabuf_mhead_u8(buf), wpabuf_len(buf)); 9546 if (ret < 0) 9547 wpa_dbg(wpa_s, MSG_DEBUG, 9548 "P2P: Failed to start P2P listen offload"); 9549 9550 os_free(device_types); 9551 wpabuf_free(buf); 9552 9553 if (ret == 0) { 9554 wpa_s->p2p_lo_started = 1; 9555 9556 /* Stop current P2P listen if any */ 9557 wpas_stop_listen(wpa_s); 9558 } 9559 9560 return ret; 9561 } 9562 9563 9564 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s) 9565 { 9566 int ret; 9567 9568 if (!wpa_s->p2p_lo_started) 9569 return 0; 9570 9571 ret = wpa_drv_p2p_lo_stop(wpa_s); 9572 if (ret < 0) 9573 wpa_dbg(wpa_s, MSG_DEBUG, 9574 "P2P: Failed to stop P2P listen offload"); 9575 9576 wpa_s->p2p_lo_started = 0; 9577 return ret; 9578 } 9579