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51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef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 (radio_work_pending(wpa_s, "p2p-send-action")) { 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", 1, 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 if (wpa_s->p2p_go_he) 2272 res->he = 1; 2273 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2274 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2275 2276 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2277 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2278 " wps_method=%s", 2279 res->role_go ? "GO" : "client", res->freq, res->ht40, 2280 MAC2STR(res->peer_device_addr), 2281 MAC2STR(res->peer_interface_addr), 2282 p2p_wps_method_text(res->wps_method)); 2283 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2284 2285 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2286 struct wpa_ssid *ssid; 2287 ssid = wpa_config_get_network(wpa_s->conf, 2288 wpa_s->p2p_persistent_id); 2289 if (ssid && ssid->disabled == 2 && 2290 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2291 size_t len = os_strlen(ssid->passphrase); 2292 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2293 "on requested persistent group"); 2294 os_memcpy(res->passphrase, ssid->passphrase, len); 2295 res->passphrase[len] = '\0'; 2296 } 2297 } 2298 2299 if (wpa_s->create_p2p_iface) { 2300 group_wpa_s = 2301 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2302 if (group_wpa_s == NULL) { 2303 wpas_p2p_remove_pending_group_interface(wpa_s); 2304 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2305 wpa_s, NULL); 2306 wpas_p2p_group_formation_failed(wpa_s, 1); 2307 return; 2308 } 2309 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2310 wpa_s->pending_interface_name[0] = '\0'; 2311 } else { 2312 group_wpa_s = wpa_s->parent; 2313 wpa_s->global->p2p_group_formation = group_wpa_s; 2314 if (group_wpa_s != wpa_s) 2315 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2316 } 2317 2318 group_wpa_s->p2p_in_provisioning = 1; 2319 group_wpa_s->p2pdev = wpa_s; 2320 if (group_wpa_s != wpa_s) { 2321 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2322 sizeof(group_wpa_s->p2p_pin)); 2323 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2324 } 2325 if (res->role_go) { 2326 wpas_start_wps_go(group_wpa_s, res, 1); 2327 } else { 2328 os_get_reltime(&group_wpa_s->scan_min_time); 2329 wpas_start_wps_enrollee(group_wpa_s, res); 2330 } 2331 2332 wpa_s->p2p_long_listen = 0; 2333 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2334 2335 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2336 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2337 (res->peer_config_timeout % 100) * 10000, 2338 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2339 } 2340 2341 2342 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2343 u8 go_intent) 2344 { 2345 struct wpa_supplicant *wpa_s = ctx; 2346 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2347 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2348 dev_passwd_id, go_intent); 2349 2350 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2351 } 2352 2353 2354 static void wpas_dev_found(void *ctx, const u8 *addr, 2355 const struct p2p_peer_info *info, 2356 int new_device) 2357 { 2358 #ifndef CONFIG_NO_STDOUT_DEBUG 2359 struct wpa_supplicant *wpa_s = ctx; 2360 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2361 char *wfd_dev_info_hex = NULL; 2362 2363 #ifdef CONFIG_WIFI_DISPLAY 2364 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2365 WFD_SUBELEM_DEVICE_INFO); 2366 #endif /* CONFIG_WIFI_DISPLAY */ 2367 2368 if (info->p2ps_instance) { 2369 char str[256]; 2370 const u8 *buf = wpabuf_head(info->p2ps_instance); 2371 size_t len = wpabuf_len(info->p2ps_instance); 2372 2373 while (len) { 2374 u32 id; 2375 u16 methods; 2376 u8 str_len; 2377 2378 if (len < 4 + 2 + 1) 2379 break; 2380 id = WPA_GET_LE32(buf); 2381 buf += sizeof(u32); 2382 methods = WPA_GET_BE16(buf); 2383 buf += sizeof(u16); 2384 str_len = *buf++; 2385 if (str_len > len - 4 - 2 - 1) 2386 break; 2387 os_memcpy(str, buf, str_len); 2388 str[str_len] = '\0'; 2389 buf += str_len; 2390 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2391 2392 wpa_msg_global(wpa_s, MSG_INFO, 2393 P2P_EVENT_DEVICE_FOUND MACSTR 2394 " p2p_dev_addr=" MACSTR 2395 " pri_dev_type=%s name='%s'" 2396 " config_methods=0x%x" 2397 " dev_capab=0x%x" 2398 " group_capab=0x%x" 2399 " adv_id=%x asp_svc=%s%s", 2400 MAC2STR(addr), 2401 MAC2STR(info->p2p_device_addr), 2402 wps_dev_type_bin2str( 2403 info->pri_dev_type, 2404 devtype, sizeof(devtype)), 2405 info->device_name, methods, 2406 info->dev_capab, info->group_capab, 2407 id, str, 2408 info->vendor_elems ? 2409 " vendor_elems=1" : ""); 2410 } 2411 goto done; 2412 } 2413 2414 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2415 " p2p_dev_addr=" MACSTR 2416 " pri_dev_type=%s name='%s' config_methods=0x%x " 2417 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2418 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2419 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2420 sizeof(devtype)), 2421 info->device_name, info->config_methods, 2422 info->dev_capab, info->group_capab, 2423 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2424 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2425 info->vendor_elems ? " vendor_elems=1" : "", 2426 new_device); 2427 2428 done: 2429 os_free(wfd_dev_info_hex); 2430 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2431 2432 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2433 } 2434 2435 2436 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2437 { 2438 struct wpa_supplicant *wpa_s = ctx; 2439 2440 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2441 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2442 2443 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2444 } 2445 2446 2447 static void wpas_find_stopped(void *ctx) 2448 { 2449 struct wpa_supplicant *wpa_s = ctx; 2450 2451 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0) 2452 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed"); 2453 2454 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2455 wpas_notify_p2p_find_stopped(wpa_s); 2456 } 2457 2458 2459 struct wpas_p2p_listen_work { 2460 unsigned int freq; 2461 unsigned int duration; 2462 struct wpabuf *probe_resp_ie; 2463 }; 2464 2465 2466 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2467 { 2468 if (lwork == NULL) 2469 return; 2470 wpabuf_free(lwork->probe_resp_ie); 2471 os_free(lwork); 2472 } 2473 2474 2475 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2476 { 2477 struct wpas_p2p_listen_work *lwork; 2478 2479 if (!wpa_s->p2p_listen_work) 2480 return; 2481 2482 lwork = wpa_s->p2p_listen_work->ctx; 2483 wpas_p2p_listen_work_free(lwork); 2484 radio_work_done(wpa_s->p2p_listen_work); 2485 wpa_s->p2p_listen_work = NULL; 2486 } 2487 2488 2489 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2490 { 2491 struct wpa_supplicant *wpa_s = work->wpa_s; 2492 struct wpas_p2p_listen_work *lwork = work->ctx; 2493 unsigned int duration; 2494 2495 if (deinit) { 2496 if (work->started) { 2497 wpa_s->p2p_listen_work = NULL; 2498 wpas_stop_listen(wpa_s); 2499 } 2500 wpas_p2p_listen_work_free(lwork); 2501 return; 2502 } 2503 2504 wpa_s->p2p_listen_work = work; 2505 2506 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2507 2508 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2509 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2510 "report received Probe Request frames"); 2511 wpas_p2p_listen_work_done(wpa_s); 2512 return; 2513 } 2514 2515 wpa_s->pending_listen_freq = lwork->freq; 2516 wpa_s->pending_listen_duration = lwork->duration; 2517 2518 duration = lwork->duration; 2519 #ifdef CONFIG_TESTING_OPTIONS 2520 if (wpa_s->extra_roc_dur) { 2521 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2522 duration, duration + wpa_s->extra_roc_dur); 2523 duration += wpa_s->extra_roc_dur; 2524 } 2525 #endif /* CONFIG_TESTING_OPTIONS */ 2526 2527 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2528 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2529 "to remain on channel (%u MHz) for Listen " 2530 "state", lwork->freq); 2531 wpas_p2p_listen_work_done(wpa_s); 2532 wpa_s->pending_listen_freq = 0; 2533 return; 2534 } 2535 wpa_s->off_channel_freq = 0; 2536 wpa_s->roc_waiting_drv_freq = lwork->freq; 2537 } 2538 2539 2540 static int wpas_start_listen(void *ctx, unsigned int freq, 2541 unsigned int duration, 2542 const struct wpabuf *probe_resp_ie) 2543 { 2544 struct wpa_supplicant *wpa_s = ctx; 2545 struct wpas_p2p_listen_work *lwork; 2546 2547 if (wpa_s->p2p_listen_work) { 2548 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2549 return -1; 2550 } 2551 2552 lwork = os_zalloc(sizeof(*lwork)); 2553 if (lwork == NULL) 2554 return -1; 2555 lwork->freq = freq; 2556 lwork->duration = duration; 2557 if (probe_resp_ie) { 2558 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2559 if (lwork->probe_resp_ie == NULL) { 2560 wpas_p2p_listen_work_free(lwork); 2561 return -1; 2562 } 2563 } 2564 2565 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2566 lwork) < 0) { 2567 wpas_p2p_listen_work_free(lwork); 2568 return -1; 2569 } 2570 2571 return 0; 2572 } 2573 2574 2575 static void wpas_stop_listen(void *ctx) 2576 { 2577 struct wpa_supplicant *wpa_s = ctx; 2578 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2579 wpa_drv_cancel_remain_on_channel(wpa_s); 2580 wpa_s->off_channel_freq = 0; 2581 wpa_s->roc_waiting_drv_freq = 0; 2582 } 2583 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2584 2585 /* 2586 * Don't cancel Probe Request RX reporting for a connected P2P Client 2587 * handling Probe Request frames. 2588 */ 2589 if (!wpa_s->p2p_cli_probe) 2590 wpa_drv_probe_req_report(wpa_s, 0); 2591 2592 wpas_p2p_listen_work_done(wpa_s); 2593 } 2594 2595 2596 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2597 unsigned int freq) 2598 { 2599 struct wpa_supplicant *wpa_s = ctx; 2600 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2601 freq); 2602 } 2603 2604 2605 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2606 const u8 *peer, const char *params, 2607 unsigned int generated_pin) 2608 { 2609 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2610 " %08d%s", MAC2STR(peer), generated_pin, params); 2611 } 2612 2613 2614 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2615 const u8 *peer, const char *params) 2616 { 2617 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2618 "%s", MAC2STR(peer), params); 2619 } 2620 2621 2622 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2623 const u8 *dev_addr, const u8 *pri_dev_type, 2624 const char *dev_name, u16 supp_config_methods, 2625 u8 dev_capab, u8 group_capab, const u8 *group_id, 2626 size_t group_id_len) 2627 { 2628 struct wpa_supplicant *wpa_s = ctx; 2629 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2630 char params[300]; 2631 u8 empty_dev_type[8]; 2632 unsigned int generated_pin = 0; 2633 struct wpa_supplicant *group = NULL; 2634 int res; 2635 2636 if (group_id) { 2637 for (group = wpa_s->global->ifaces; group; group = group->next) 2638 { 2639 struct wpa_ssid *s = group->current_ssid; 2640 if (s != NULL && 2641 s->mode == WPAS_MODE_P2P_GO && 2642 group_id_len - ETH_ALEN == s->ssid_len && 2643 os_memcmp(group_id + ETH_ALEN, s->ssid, 2644 s->ssid_len) == 0) 2645 break; 2646 } 2647 } 2648 2649 if (pri_dev_type == NULL) { 2650 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2651 pri_dev_type = empty_dev_type; 2652 } 2653 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2654 " pri_dev_type=%s name='%s' config_methods=0x%x " 2655 "dev_capab=0x%x group_capab=0x%x%s%s", 2656 MAC2STR(dev_addr), 2657 wps_dev_type_bin2str(pri_dev_type, devtype, 2658 sizeof(devtype)), 2659 dev_name, supp_config_methods, dev_capab, group_capab, 2660 group ? " group=" : "", 2661 group ? group->ifname : ""); 2662 if (os_snprintf_error(sizeof(params), res)) 2663 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2664 params[sizeof(params) - 1] = '\0'; 2665 2666 if (config_methods & WPS_CONFIG_DISPLAY) { 2667 if (wps_generate_pin(&generated_pin) < 0) { 2668 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2669 wpas_notify_p2p_provision_discovery( 2670 wpa_s, peer, 0 /* response */, 2671 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2672 return; 2673 } 2674 wpas_prov_disc_local_display(wpa_s, peer, params, 2675 generated_pin); 2676 } else if (config_methods & WPS_CONFIG_KEYPAD) 2677 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2678 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2679 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2680 MACSTR "%s", MAC2STR(peer), params); 2681 2682 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2683 P2P_PROV_DISC_SUCCESS, 2684 config_methods, generated_pin); 2685 } 2686 2687 2688 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2689 { 2690 struct wpa_supplicant *wpa_s = ctx; 2691 unsigned int generated_pin = 0; 2692 char params[20]; 2693 2694 if (wpa_s->pending_pd_before_join && 2695 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2696 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2697 wpa_s->pending_pd_before_join = 0; 2698 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2699 "join-existing-group operation"); 2700 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2701 return; 2702 } 2703 2704 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2705 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2706 int res; 2707 2708 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2709 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2710 if (os_snprintf_error(sizeof(params), res)) 2711 params[sizeof(params) - 1] = '\0'; 2712 } else 2713 params[0] = '\0'; 2714 2715 if (config_methods & WPS_CONFIG_DISPLAY) 2716 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2717 else if (config_methods & WPS_CONFIG_KEYPAD) { 2718 if (wps_generate_pin(&generated_pin) < 0) { 2719 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2720 wpas_notify_p2p_provision_discovery( 2721 wpa_s, peer, 0 /* response */, 2722 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2723 return; 2724 } 2725 wpas_prov_disc_local_display(wpa_s, peer, params, 2726 generated_pin); 2727 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2728 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2729 MACSTR "%s", MAC2STR(peer), params); 2730 2731 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2732 P2P_PROV_DISC_SUCCESS, 2733 config_methods, generated_pin); 2734 } 2735 2736 2737 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2738 enum p2p_prov_disc_status status, 2739 u32 adv_id, const u8 *adv_mac, 2740 const char *deferred_session_resp) 2741 { 2742 struct wpa_supplicant *wpa_s = ctx; 2743 2744 if (wpa_s->p2p_fallback_to_go_neg) { 2745 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2746 "failed - fall back to GO Negotiation"); 2747 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 2748 P2P_EVENT_FALLBACK_TO_GO_NEG 2749 "reason=PD-failed"); 2750 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2751 return; 2752 } 2753 2754 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2755 wpa_s->pending_pd_before_join = 0; 2756 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2757 "join-existing-group operation (no ACK for PD " 2758 "Req attempts)"); 2759 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2760 return; 2761 } 2762 2763 if (adv_id && adv_mac && deferred_session_resp) { 2764 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2765 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2766 " deferred_session_resp='%s'", 2767 MAC2STR(peer), status, adv_id, 2768 deferred_session_resp); 2769 } else if (adv_id && adv_mac) { 2770 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2771 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2772 MAC2STR(peer), status, adv_id); 2773 } else { 2774 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2775 " p2p_dev_addr=" MACSTR " status=%d", 2776 MAC2STR(peer), status); 2777 } 2778 2779 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2780 status, 0, 0); 2781 } 2782 2783 2784 static int freq_included(struct wpa_supplicant *wpa_s, 2785 const struct p2p_channels *channels, 2786 unsigned int freq) 2787 { 2788 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2789 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2790 return 1; 2791 return 0; 2792 } 2793 2794 2795 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2796 { 2797 unsigned int num = P2P_MAX_CHANNELS; 2798 int *common_freqs; 2799 int ret; 2800 2801 p2p_go_dump_common_freqs(wpa_s); 2802 common_freqs = os_calloc(num, sizeof(int)); 2803 if (!common_freqs) 2804 return; 2805 2806 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2807 if (ret < 0) { 2808 wpa_dbg(wpa_s, MSG_DEBUG, 2809 "P2P: Failed to get group common freqs"); 2810 os_free(common_freqs); 2811 return; 2812 } 2813 2814 os_free(wpa_s->p2p_group_common_freqs); 2815 wpa_s->p2p_group_common_freqs = common_freqs; 2816 wpa_s->p2p_group_common_freqs_num = num; 2817 p2p_go_dump_common_freqs(wpa_s); 2818 } 2819 2820 2821 /* 2822 * Check if the given frequency is one of the possible operating frequencies 2823 * set after the completion of the GO Negotiation. 2824 */ 2825 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2826 { 2827 unsigned int i; 2828 2829 p2p_go_dump_common_freqs(wpa_s); 2830 2831 /* assume no restrictions */ 2832 if (!wpa_s->p2p_group_common_freqs_num) 2833 return 1; 2834 2835 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2836 if (wpa_s->p2p_group_common_freqs[i] == freq) 2837 return 1; 2838 } 2839 return 0; 2840 } 2841 2842 2843 static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2844 struct sta_info *sta, void *ctx) 2845 { 2846 int *ecsa_support = ctx; 2847 2848 *ecsa_support &= sta->ecsa_supported; 2849 2850 return 0; 2851 } 2852 2853 2854 /* Check if all the peers support eCSA */ 2855 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2856 { 2857 int ecsa_support = 1; 2858 2859 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2860 &ecsa_support); 2861 2862 return ecsa_support; 2863 } 2864 2865 2866 /** 2867 * Pick the best frequency to use from all the currently used frequencies. 2868 */ 2869 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2870 struct wpa_used_freq_data *freqs, 2871 unsigned int num) 2872 { 2873 unsigned int i, c; 2874 2875 /* find a candidate freq that is supported by P2P */ 2876 for (c = 0; c < num; c++) 2877 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2878 break; 2879 2880 if (c == num) 2881 return 0; 2882 2883 /* once we have a candidate, try to find a 'better' one */ 2884 for (i = c + 1; i < num; i++) { 2885 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2886 continue; 2887 2888 /* 2889 * 1. Infrastructure station interfaces have higher preference. 2890 * 2. P2P Clients have higher preference. 2891 * 3. All others. 2892 */ 2893 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2894 c = i; 2895 break; 2896 } 2897 2898 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2899 c = i; 2900 } 2901 return freqs[c].freq; 2902 } 2903 2904 2905 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2906 const u8 *go_dev_addr, const u8 *ssid, 2907 size_t ssid_len, int *go, u8 *group_bssid, 2908 int *force_freq, int persistent_group, 2909 const struct p2p_channels *channels, 2910 int dev_pw_id) 2911 { 2912 struct wpa_supplicant *wpa_s = ctx; 2913 struct wpa_ssid *s; 2914 struct wpa_used_freq_data *freqs; 2915 struct wpa_supplicant *grp; 2916 int best_freq; 2917 2918 if (!persistent_group) { 2919 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2920 " to join an active group (SSID: %s)", 2921 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2922 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2923 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2924 == 0 || 2925 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2926 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2927 "authorized invitation"); 2928 goto accept_inv; 2929 } 2930 2931 #ifdef CONFIG_WPS_NFC 2932 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2933 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2934 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2935 wpa_s->p2p_wps_method = WPS_NFC; 2936 wpa_s->pending_join_wps_method = WPS_NFC; 2937 os_memcpy(wpa_s->pending_join_dev_addr, 2938 go_dev_addr, ETH_ALEN); 2939 os_memcpy(wpa_s->pending_join_iface_addr, 2940 bssid, ETH_ALEN); 2941 goto accept_inv; 2942 } 2943 #endif /* CONFIG_WPS_NFC */ 2944 2945 /* 2946 * Do not accept the invitation automatically; notify user and 2947 * request approval. 2948 */ 2949 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2950 } 2951 2952 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2953 if (grp) { 2954 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2955 "running persistent group"); 2956 if (*go) 2957 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2958 goto accept_inv; 2959 } 2960 2961 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2962 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2963 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2964 "invitation to re-invoke a persistent group"); 2965 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2966 } else if (!wpa_s->conf->persistent_reconnect) 2967 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2968 2969 for (s = wpa_s->conf->ssid; s; s = s->next) { 2970 if (s->disabled == 2 && 2971 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2972 s->ssid_len == ssid_len && 2973 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2974 break; 2975 } 2976 2977 if (!s) { 2978 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2979 " requested reinvocation of an unknown group", 2980 MAC2STR(sa)); 2981 return P2P_SC_FAIL_UNKNOWN_GROUP; 2982 } 2983 2984 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2985 *go = 1; 2986 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2987 wpa_printf(MSG_DEBUG, "P2P: The only available " 2988 "interface is already in use - reject " 2989 "invitation"); 2990 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2991 } 2992 if (wpa_s->p2p_mgmt) 2993 os_memcpy(group_bssid, wpa_s->parent->own_addr, 2994 ETH_ALEN); 2995 else 2996 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2997 } else if (s->mode == WPAS_MODE_P2P_GO) { 2998 *go = 1; 2999 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 3000 { 3001 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3002 "interface address for the group"); 3003 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 3004 } 3005 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 3006 ETH_ALEN); 3007 } 3008 3009 accept_inv: 3010 wpas_p2p_set_own_freq_preference(wpa_s, 0); 3011 3012 best_freq = 0; 3013 freqs = os_calloc(wpa_s->num_multichan_concurrent, 3014 sizeof(struct wpa_used_freq_data)); 3015 if (freqs) { 3016 int num_channels = wpa_s->num_multichan_concurrent; 3017 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 3018 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 3019 os_free(freqs); 3020 } 3021 3022 /* Get one of the frequencies currently in use */ 3023 if (best_freq > 0) { 3024 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 3025 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 3026 3027 if (wpa_s->num_multichan_concurrent < 2 || 3028 wpas_p2p_num_unused_channels(wpa_s) < 1) { 3029 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 3030 *force_freq = best_freq; 3031 } 3032 } 3033 3034 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 3035 wpas_p2p_num_unused_channels(wpa_s) > 0) { 3036 if (*go == 0) { 3037 /* We are the client */ 3038 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 3039 "running a GO but we are capable of MCC, " 3040 "figure out the best channel to use"); 3041 *force_freq = 0; 3042 } else if (!freq_included(wpa_s, channels, *force_freq)) { 3043 /* We are the GO, and *force_freq is not in the 3044 * intersection */ 3045 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 3046 "in intersection but we are capable of MCC, " 3047 "figure out the best channel to use", 3048 *force_freq); 3049 *force_freq = 0; 3050 } 3051 } 3052 3053 return P2P_SC_SUCCESS; 3054 } 3055 3056 3057 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3058 const u8 *ssid, size_t ssid_len, 3059 const u8 *go_dev_addr, u8 status, 3060 int op_freq) 3061 { 3062 struct wpa_supplicant *wpa_s = ctx; 3063 struct wpa_ssid *s; 3064 3065 for (s = wpa_s->conf->ssid; s; s = s->next) { 3066 if (s->disabled == 2 && 3067 s->ssid_len == ssid_len && 3068 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3069 break; 3070 } 3071 3072 if (status == P2P_SC_SUCCESS) { 3073 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3074 " was accepted; op_freq=%d MHz, SSID=%s", 3075 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3076 if (s) { 3077 int go = s->mode == WPAS_MODE_P2P_GO; 3078 if (go) { 3079 wpa_msg_global(wpa_s, MSG_INFO, 3080 P2P_EVENT_INVITATION_ACCEPTED 3081 "sa=" MACSTR 3082 " persistent=%d freq=%d", 3083 MAC2STR(sa), s->id, op_freq); 3084 } else { 3085 wpa_msg_global(wpa_s, MSG_INFO, 3086 P2P_EVENT_INVITATION_ACCEPTED 3087 "sa=" MACSTR 3088 " persistent=%d", 3089 MAC2STR(sa), s->id); 3090 } 3091 wpas_p2p_group_add_persistent( 3092 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, 0, NULL, 3093 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 3094 1); 3095 } else if (bssid) { 3096 wpa_s->user_initiated_pd = 0; 3097 wpa_msg_global(wpa_s, MSG_INFO, 3098 P2P_EVENT_INVITATION_ACCEPTED 3099 "sa=" MACSTR " go_dev_addr=" MACSTR 3100 " bssid=" MACSTR " unknown-network", 3101 MAC2STR(sa), MAC2STR(go_dev_addr), 3102 MAC2STR(bssid)); 3103 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3104 wpa_s->p2p_wps_method, 0, op_freq, 3105 ssid, ssid_len); 3106 } 3107 return; 3108 } 3109 3110 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3111 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3112 " was rejected (status %u)", MAC2STR(sa), status); 3113 return; 3114 } 3115 3116 if (!s) { 3117 if (bssid) { 3118 wpa_msg_global(wpa_s, MSG_INFO, 3119 P2P_EVENT_INVITATION_RECEIVED 3120 "sa=" MACSTR " go_dev_addr=" MACSTR 3121 " bssid=" MACSTR " unknown-network", 3122 MAC2STR(sa), MAC2STR(go_dev_addr), 3123 MAC2STR(bssid)); 3124 } else { 3125 wpa_msg_global(wpa_s, MSG_INFO, 3126 P2P_EVENT_INVITATION_RECEIVED 3127 "sa=" MACSTR " go_dev_addr=" MACSTR 3128 " unknown-network", 3129 MAC2STR(sa), MAC2STR(go_dev_addr)); 3130 } 3131 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3132 bssid, 0, op_freq); 3133 return; 3134 } 3135 3136 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3137 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3138 "sa=" MACSTR " persistent=%d freq=%d", 3139 MAC2STR(sa), s->id, op_freq); 3140 } else { 3141 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3142 "sa=" MACSTR " persistent=%d", 3143 MAC2STR(sa), s->id); 3144 } 3145 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3146 s->id, op_freq); 3147 } 3148 3149 3150 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3151 struct wpa_ssid *ssid, 3152 const u8 *peer, int inv) 3153 { 3154 size_t i; 3155 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3156 3157 if (ssid == NULL) 3158 return; 3159 3160 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3161 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3162 ETH_ALEN) == 0) 3163 break; 3164 } 3165 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3166 if (ssid->mode != WPAS_MODE_P2P_GO && 3167 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3168 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3169 "due to invitation result", ssid->id); 3170 wpas_notify_network_removed(wpa_s, ssid); 3171 wpa_config_remove_network(wpa_s->conf, ssid->id); 3172 return; 3173 } 3174 return; /* Peer not found in client list */ 3175 } 3176 3177 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3178 "group %d client list%s", 3179 MAC2STR(peer), ssid->id, 3180 inv ? " due to invitation result" : ""); 3181 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3182 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3183 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3184 ssid->num_p2p_clients--; 3185 if (p2p_wpa_s->conf->update_config && 3186 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3187 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3188 } 3189 3190 3191 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3192 const u8 *peer) 3193 { 3194 struct wpa_ssid *ssid; 3195 3196 wpa_s = wpa_s->global->p2p_invite_group; 3197 if (wpa_s == NULL) 3198 return; /* No known invitation group */ 3199 ssid = wpa_s->current_ssid; 3200 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3201 !ssid->p2p_persistent_group) 3202 return; /* Not operating as a GO in persistent group */ 3203 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer, 3204 ssid->ssid, ssid->ssid_len); 3205 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3206 } 3207 3208 3209 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3210 const struct p2p_channels *channels, 3211 const u8 *peer, int neg_freq, 3212 int peer_oper_freq) 3213 { 3214 struct wpa_supplicant *wpa_s = ctx; 3215 struct wpa_ssid *ssid; 3216 int freq; 3217 3218 if (bssid) { 3219 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3220 "status=%d " MACSTR, 3221 status, MAC2STR(bssid)); 3222 } else { 3223 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3224 "status=%d ", status); 3225 } 3226 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3227 3228 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3229 status, MAC2STR(peer)); 3230 if (wpa_s->pending_invite_ssid_id == -1) { 3231 struct wpa_supplicant *group_if = 3232 wpa_s->global->p2p_invite_group; 3233 3234 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3235 wpas_remove_persistent_client(wpa_s, peer); 3236 3237 /* 3238 * Invitation to an active group. If this is successful and we 3239 * are the GO, set the client wait to postpone some concurrent 3240 * operations and to allow provisioning and connection to happen 3241 * more quickly. 3242 */ 3243 if (status == P2P_SC_SUCCESS && 3244 group_if && group_if->current_ssid && 3245 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3246 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3247 #ifdef CONFIG_TESTING_OPTIONS 3248 if (group_if->p2p_go_csa_on_inv) { 3249 wpa_printf(MSG_DEBUG, 3250 "Testing: force P2P GO CSA after invitation"); 3251 eloop_cancel_timeout( 3252 wpas_p2p_reconsider_moving_go, 3253 wpa_s, NULL); 3254 eloop_register_timeout( 3255 0, 50000, 3256 wpas_p2p_reconsider_moving_go, 3257 wpa_s, NULL); 3258 } 3259 #endif /* CONFIG_TESTING_OPTIONS */ 3260 } 3261 return; 3262 } 3263 3264 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3265 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3266 "invitation exchange to indicate readiness for " 3267 "re-invocation"); 3268 } 3269 3270 if (status != P2P_SC_SUCCESS) { 3271 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3272 ssid = wpa_config_get_network( 3273 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3274 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3275 } 3276 wpas_p2p_remove_pending_group_interface(wpa_s); 3277 return; 3278 } 3279 3280 ssid = wpa_config_get_network(wpa_s->conf, 3281 wpa_s->pending_invite_ssid_id); 3282 if (ssid == NULL) { 3283 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3284 "data matching with invitation"); 3285 return; 3286 } 3287 3288 /* 3289 * The peer could have missed our ctrl::ack frame for Invitation 3290 * Response and continue retransmitting the frame. To reduce the 3291 * likelihood of the peer not getting successful TX status for the 3292 * Invitation Response frame, wait a short time here before starting 3293 * the persistent group so that we will remain on the current channel to 3294 * acknowledge any possible retransmission from the peer. 3295 */ 3296 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3297 "starting persistent group"); 3298 os_sleep(0, 50000); 3299 3300 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3301 freq_included(wpa_s, channels, neg_freq)) 3302 freq = neg_freq; 3303 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3304 freq_included(wpa_s, channels, peer_oper_freq)) 3305 freq = peer_oper_freq; 3306 else 3307 freq = 0; 3308 3309 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3310 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3311 wpas_p2p_group_add_persistent(wpa_s, ssid, 3312 ssid->mode == WPAS_MODE_P2P_GO, 3313 wpa_s->p2p_persistent_go_freq, 3314 freq, 3315 wpa_s->p2p_go_vht_center_freq2, 3316 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3317 wpa_s->p2p_go_max_oper_chwidth, 3318 wpa_s->p2p_go_he, 3319 channels, 3320 ssid->mode == WPAS_MODE_P2P_GO ? 3321 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3322 0, 1); 3323 } 3324 3325 3326 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3327 unsigned int freq) 3328 { 3329 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3330 return 1; 3331 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3332 } 3333 3334 3335 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3336 { 3337 reg->channel[reg->channels] = chan; 3338 reg->channels++; 3339 } 3340 3341 3342 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3343 struct p2p_channels *chan, 3344 struct p2p_channels *cli_chan) 3345 { 3346 int i, cla = 0; 3347 3348 wpa_s->global->p2p_24ghz_social_channels = 1; 3349 3350 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3351 3352 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3353 "band"); 3354 3355 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3356 chan->reg_class[cla].reg_class = 81; 3357 chan->reg_class[cla].channels = 0; 3358 for (i = 0; i < 11; i++) { 3359 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3360 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3361 } 3362 if (chan->reg_class[cla].channels) 3363 cla++; 3364 3365 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3366 "band"); 3367 3368 /* Operating class 115 - 5 GHz, channels 36-48 */ 3369 chan->reg_class[cla].reg_class = 115; 3370 chan->reg_class[cla].channels = 0; 3371 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3372 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3373 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3374 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3375 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3376 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3377 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3378 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3379 if (chan->reg_class[cla].channels) 3380 cla++; 3381 3382 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3383 "band"); 3384 3385 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3386 chan->reg_class[cla].reg_class = 124; 3387 chan->reg_class[cla].channels = 0; 3388 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3389 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3390 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3391 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3392 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3393 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3394 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3395 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3396 if (chan->reg_class[cla].channels) 3397 cla++; 3398 3399 chan->reg_classes = cla; 3400 return 0; 3401 } 3402 3403 3404 static int has_channel(struct wpa_global *global, 3405 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3406 { 3407 int i; 3408 unsigned int freq; 3409 3410 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3411 chan * 5; 3412 if (wpas_p2p_disallowed_freq(global, freq)) 3413 return NOT_ALLOWED; 3414 3415 for (i = 0; i < mode->num_channels; i++) { 3416 if (mode->channels[i].chan == chan) { 3417 if (flags) 3418 *flags = mode->channels[i].flag; 3419 if (mode->channels[i].flag & 3420 (HOSTAPD_CHAN_DISABLED | 3421 HOSTAPD_CHAN_RADAR)) 3422 return NOT_ALLOWED; 3423 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3424 return NO_IR; 3425 return ALLOWED; 3426 } 3427 } 3428 3429 return NOT_ALLOWED; 3430 } 3431 3432 3433 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3434 struct hostapd_hw_modes *mode, 3435 u8 channel) 3436 { 3437 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3438 size_t i; 3439 3440 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3441 return 0; 3442 3443 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3444 /* 3445 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3446 * so the center channel is 6 channels away from the start/end. 3447 */ 3448 if (channel >= center_channels[i] - 6 && 3449 channel <= center_channels[i] + 6) 3450 return center_channels[i]; 3451 3452 return 0; 3453 } 3454 3455 3456 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3457 struct hostapd_hw_modes *mode, 3458 u8 channel, u8 bw) 3459 { 3460 u8 center_chan; 3461 int i, flags; 3462 enum chan_allowed res, ret = ALLOWED; 3463 3464 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3465 if (!center_chan) 3466 return NOT_ALLOWED; 3467 if (center_chan >= 58 && center_chan <= 138) 3468 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3469 3470 /* check all the channels are available */ 3471 for (i = 0; i < 4; i++) { 3472 int adj_chan = center_chan - 6 + i * 4; 3473 3474 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3475 if (res == NOT_ALLOWED) 3476 return NOT_ALLOWED; 3477 if (res == NO_IR) 3478 ret = NO_IR; 3479 3480 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3481 return NOT_ALLOWED; 3482 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3483 return NOT_ALLOWED; 3484 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3485 return NOT_ALLOWED; 3486 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3487 return NOT_ALLOWED; 3488 } 3489 3490 return ret; 3491 } 3492 3493 3494 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3495 struct hostapd_hw_modes *mode, 3496 u8 channel) 3497 { 3498 u8 center_channels[] = { 50, 114 }; 3499 unsigned int i; 3500 3501 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3502 return 0; 3503 3504 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3505 /* 3506 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3507 * so the center channel is 14 channels away from the start/end. 3508 */ 3509 if (channel >= center_channels[i] - 14 && 3510 channel <= center_channels[i] + 14) 3511 return center_channels[i]; 3512 3513 return 0; 3514 } 3515 3516 3517 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3518 struct hostapd_hw_modes *mode, 3519 u8 channel, u8 bw) 3520 { 3521 u8 center_chan; 3522 int i, flags; 3523 enum chan_allowed res, ret = ALLOWED; 3524 3525 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3526 if (!center_chan) 3527 return NOT_ALLOWED; 3528 /* VHT 160 MHz uses DFS channels in most countries. */ 3529 3530 /* Check all the channels are available */ 3531 for (i = 0; i < 8; i++) { 3532 int adj_chan = center_chan - 14 + i * 4; 3533 3534 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3535 if (res == NOT_ALLOWED) 3536 return NOT_ALLOWED; 3537 3538 if (res == NO_IR) 3539 ret = NO_IR; 3540 3541 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3542 return NOT_ALLOWED; 3543 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3544 return NOT_ALLOWED; 3545 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3546 return NOT_ALLOWED; 3547 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3548 return NOT_ALLOWED; 3549 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3550 return NOT_ALLOWED; 3551 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3552 return NOT_ALLOWED; 3553 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3554 return NOT_ALLOWED; 3555 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3556 return NOT_ALLOWED; 3557 } 3558 3559 return ret; 3560 } 3561 3562 3563 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3564 struct hostapd_hw_modes *mode, 3565 u8 channel, u8 bw) 3566 { 3567 int flag = 0; 3568 enum chan_allowed res, res2; 3569 3570 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3571 if (bw == BW40MINUS) { 3572 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3573 return NOT_ALLOWED; 3574 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3575 } else if (bw == BW40PLUS) { 3576 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3577 return NOT_ALLOWED; 3578 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3579 } else if (bw == BW80) { 3580 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3581 } else if (bw == BW160) { 3582 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3583 } 3584 3585 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3586 return NOT_ALLOWED; 3587 if (res == NO_IR || res2 == NO_IR) 3588 return NO_IR; 3589 return res; 3590 } 3591 3592 3593 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3594 struct p2p_channels *chan, 3595 struct p2p_channels *cli_chan) 3596 { 3597 struct hostapd_hw_modes *mode; 3598 int cla, op, cli_cla; 3599 3600 if (wpa_s->hw.modes == NULL) { 3601 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3602 "of all supported channels; assume dualband " 3603 "support"); 3604 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3605 } 3606 3607 cla = cli_cla = 0; 3608 3609 for (op = 0; global_op_class[op].op_class; op++) { 3610 const struct oper_class_map *o = &global_op_class[op]; 3611 u8 ch; 3612 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3613 3614 if (o->p2p == NO_P2P_SUPP) 3615 continue; 3616 3617 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3618 if (mode == NULL) 3619 continue; 3620 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3621 wpa_s->global->p2p_24ghz_social_channels = 1; 3622 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3623 enum chan_allowed res; 3624 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3625 if (res == ALLOWED) { 3626 if (reg == NULL) { 3627 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3628 o->op_class); 3629 reg = &chan->reg_class[cla]; 3630 cla++; 3631 reg->reg_class = o->op_class; 3632 } 3633 reg->channel[reg->channels] = ch; 3634 reg->channels++; 3635 } else if (res == NO_IR && 3636 wpa_s->conf->p2p_add_cli_chan) { 3637 if (cli_reg == NULL) { 3638 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3639 o->op_class); 3640 cli_reg = &cli_chan->reg_class[cli_cla]; 3641 cli_cla++; 3642 cli_reg->reg_class = o->op_class; 3643 } 3644 cli_reg->channel[cli_reg->channels] = ch; 3645 cli_reg->channels++; 3646 } 3647 } 3648 if (reg) { 3649 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3650 reg->channel, reg->channels); 3651 } 3652 if (cli_reg) { 3653 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3654 cli_reg->channel, cli_reg->channels); 3655 } 3656 } 3657 3658 chan->reg_classes = cla; 3659 cli_chan->reg_classes = cli_cla; 3660 3661 return 0; 3662 } 3663 3664 3665 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3666 struct hostapd_hw_modes *mode, u8 channel) 3667 { 3668 int op; 3669 enum chan_allowed ret; 3670 3671 for (op = 0; global_op_class[op].op_class; op++) { 3672 const struct oper_class_map *o = &global_op_class[op]; 3673 u8 ch; 3674 3675 if (o->p2p == NO_P2P_SUPP) 3676 continue; 3677 3678 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3679 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3680 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3681 ch != channel) 3682 continue; 3683 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3684 if (ret == ALLOWED) 3685 return (o->bw == BW40MINUS) ? -1 : 1; 3686 } 3687 } 3688 return 0; 3689 } 3690 3691 3692 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3693 struct hostapd_hw_modes *mode, u8 channel) 3694 { 3695 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3696 return 0; 3697 3698 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3699 } 3700 3701 3702 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3703 struct hostapd_hw_modes *mode, u8 channel) 3704 { 3705 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3706 return 0; 3707 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3708 } 3709 3710 3711 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3712 size_t buf_len) 3713 { 3714 struct wpa_supplicant *wpa_s = ctx; 3715 3716 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3717 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3718 break; 3719 } 3720 if (wpa_s == NULL) 3721 return -1; 3722 3723 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3724 } 3725 3726 3727 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3728 const u8 *ssid, size_t ssid_len) 3729 { 3730 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3731 struct wpa_ssid *s = wpa_s->current_ssid; 3732 if (s == NULL) 3733 continue; 3734 if (s->mode != WPAS_MODE_P2P_GO && 3735 s->mode != WPAS_MODE_AP && 3736 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3737 continue; 3738 if (s->ssid_len != ssid_len || 3739 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3740 continue; 3741 return wpa_s; 3742 } 3743 3744 return NULL; 3745 3746 } 3747 3748 3749 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3750 const u8 *peer_dev_addr) 3751 { 3752 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3753 struct wpa_ssid *ssid = wpa_s->current_ssid; 3754 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3755 continue; 3756 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3757 return wpa_s; 3758 } 3759 3760 return NULL; 3761 } 3762 3763 3764 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3765 { 3766 struct wpa_supplicant *wpa_s = ctx; 3767 3768 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3769 } 3770 3771 3772 static int wpas_is_concurrent_session_active(void *ctx) 3773 { 3774 struct wpa_supplicant *wpa_s = ctx; 3775 struct wpa_supplicant *ifs; 3776 3777 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3778 if (ifs == wpa_s) 3779 continue; 3780 if (ifs->wpa_state > WPA_ASSOCIATED) 3781 return 1; 3782 } 3783 return 0; 3784 } 3785 3786 3787 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3788 { 3789 struct wpa_supplicant *wpa_s = ctx; 3790 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3791 } 3792 3793 3794 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3795 const char *conf_p2p_dev) 3796 { 3797 struct wpa_interface iface; 3798 struct wpa_supplicant *p2pdev_wpa_s; 3799 char ifname[100]; 3800 char force_name[100]; 3801 int ret; 3802 3803 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3804 wpa_s->ifname); 3805 if (os_snprintf_error(sizeof(ifname), ret)) 3806 return -1; 3807 force_name[0] = '\0'; 3808 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3809 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3810 force_name, wpa_s->pending_interface_addr, NULL); 3811 if (ret < 0) { 3812 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3813 return ret; 3814 } 3815 os_strlcpy(wpa_s->pending_interface_name, ifname, 3816 sizeof(wpa_s->pending_interface_name)); 3817 3818 os_memset(&iface, 0, sizeof(iface)); 3819 iface.p2p_mgmt = 1; 3820 iface.ifname = wpa_s->pending_interface_name; 3821 iface.driver = wpa_s->driver->name; 3822 iface.driver_param = wpa_s->conf->driver_param; 3823 3824 /* 3825 * If a P2P Device configuration file was given, use it as the interface 3826 * configuration file (instead of using parent's configuration file. 3827 */ 3828 if (conf_p2p_dev) { 3829 iface.confname = conf_p2p_dev; 3830 iface.ctrl_interface = NULL; 3831 } else { 3832 iface.confname = wpa_s->confname; 3833 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3834 } 3835 3836 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3837 if (!p2pdev_wpa_s) { 3838 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3839 return -1; 3840 } 3841 3842 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s; 3843 wpa_s->pending_interface_name[0] = '\0'; 3844 return 0; 3845 } 3846 3847 3848 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3849 const u8 *noa, size_t noa_len) 3850 { 3851 struct wpa_supplicant *wpa_s, *intf = ctx; 3852 char hex[100]; 3853 3854 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3855 if (wpa_s->waiting_presence_resp) 3856 break; 3857 } 3858 if (!wpa_s) { 3859 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3860 return; 3861 } 3862 wpa_s->waiting_presence_resp = 0; 3863 3864 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3865 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3866 " status=%u noa=%s", MAC2STR(src), status, hex); 3867 } 3868 3869 3870 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3871 size_t ssid_len, u8 *go_dev_addr, 3872 u8 *ret_ssid, size_t *ret_ssid_len, 3873 u8 *intended_iface_addr) 3874 { 3875 struct wpa_supplicant *wpa_s = ctx; 3876 struct wpa_ssid *s; 3877 3878 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3879 if (s) { 3880 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3881 *ret_ssid_len = s->ssid_len; 3882 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3883 3884 if (s->mode != WPAS_MODE_P2P_GO) { 3885 os_memset(intended_iface_addr, 0, ETH_ALEN); 3886 } else if (wpas_p2p_create_iface(wpa_s)) { 3887 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3888 return 0; 3889 3890 os_memcpy(intended_iface_addr, 3891 wpa_s->pending_interface_addr, ETH_ALEN); 3892 } else { 3893 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3894 ETH_ALEN); 3895 } 3896 return 1; 3897 } 3898 3899 return 0; 3900 } 3901 3902 3903 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3904 u8 *ssid, size_t *ssid_len, int *group_iface, 3905 unsigned int *freq) 3906 { 3907 struct wpa_supplicant *wpa_s = ctx; 3908 struct wpa_supplicant *go; 3909 struct wpa_ssid *s; 3910 3911 /* 3912 * group_iface will be set to 1 only if a dedicated interface for P2P 3913 * role is required. First, we try to reuse an active GO. However, 3914 * if it is not present, we will try to reactivate an existing 3915 * persistent group and set group_iface to 1, so the caller will know 3916 * that the pending interface should be used. 3917 */ 3918 *group_iface = 0; 3919 3920 if (freq) 3921 *freq = 0; 3922 3923 go = wpas_p2p_get_go_group(wpa_s); 3924 if (!go) { 3925 s = wpas_p2p_get_persistent_go(wpa_s); 3926 *group_iface = wpas_p2p_create_iface(wpa_s); 3927 if (s) 3928 os_memcpy(intended_addr, s->bssid, ETH_ALEN); 3929 else 3930 return 0; 3931 } else { 3932 s = go->current_ssid; 3933 os_memcpy(intended_addr, go->own_addr, ETH_ALEN); 3934 if (freq) 3935 *freq = go->assoc_freq; 3936 } 3937 3938 os_memcpy(ssid, s->ssid, s->ssid_len); 3939 *ssid_len = s->ssid_len; 3940 3941 return 1; 3942 } 3943 3944 3945 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3946 const u8 *ssid, size_t ssid_len) 3947 { 3948 struct wpa_supplicant *wpa_s = ctx; 3949 struct wpa_ssid *s; 3950 int save_config = 0; 3951 size_t i; 3952 3953 /* Start with our first choice of Persistent Groups */ 3954 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3955 if (go && ssid && ssid_len && 3956 s->ssid_len == ssid_len && 3957 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3958 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3959 break; 3960 3961 /* Remove stale persistent group */ 3962 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3963 wpa_dbg(wpa_s, MSG_DEBUG, 3964 "P2P: Remove stale persistent group id=%d", 3965 s->id); 3966 wpas_notify_persistent_group_removed(wpa_s, s); 3967 wpa_config_remove_network(wpa_s->conf, s->id); 3968 save_config = 1; 3969 continue; 3970 } 3971 3972 for (i = 0; i < s->num_p2p_clients; i++) { 3973 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3974 peer, ETH_ALEN) != 0) 3975 continue; 3976 3977 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3978 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3979 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3980 break; 3981 } 3982 s->num_p2p_clients--; 3983 save_config = 1; 3984 } 3985 3986 if (save_config) 3987 p2p_config_write(wpa_s); 3988 3989 /* Return TRUE if valid SSID remains */ 3990 return s != NULL; 3991 } 3992 3993 3994 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3995 const u8 *feat_cap, size_t feat_cap_len) 3996 { 3997 static const char pref[] = " feature_cap="; 3998 int ret; 3999 4000 buf[0] = '\0'; 4001 4002 /* 4003 * We expect a feature capability to contain at least one byte to be 4004 * reported. The string buffer provided by the caller function is 4005 * expected to be big enough to contain all bytes of the attribute for 4006 * known specifications. This function truncates the reported bytes if 4007 * the feature capability data exceeds the string buffer size. 4008 */ 4009 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 4010 return; 4011 4012 os_memcpy(buf, pref, sizeof(pref)); 4013 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 4014 buf_len - sizeof(pref) + 1, 4015 feat_cap, feat_cap_len); 4016 4017 if (ret != (2 * (int) feat_cap_len)) 4018 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 4019 } 4020 4021 4022 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 4023 const u8 *adv_mac, const u8 *ses_mac, 4024 const u8 *grp_mac, u32 adv_id, u32 ses_id, 4025 u8 conncap, int passwd_id, 4026 const u8 *persist_ssid, 4027 size_t persist_ssid_size, int response_done, 4028 int prov_start, const char *session_info, 4029 const u8 *feat_cap, size_t feat_cap_len, 4030 unsigned int freq, 4031 const u8 *group_ssid, size_t group_ssid_len) 4032 { 4033 struct wpa_supplicant *wpa_s = ctx; 4034 u8 mac[ETH_ALEN]; 4035 struct wpa_ssid *persistent_go, *stale, *s = NULL; 4036 int save_config = 0; 4037 struct wpa_supplicant *go_wpa_s; 4038 char feat_cap_str[256]; 4039 4040 if (!dev) 4041 return; 4042 4043 os_memset(mac, 0, ETH_ALEN); 4044 if (!adv_mac) 4045 adv_mac = mac; 4046 if (!ses_mac) 4047 ses_mac = mac; 4048 if (!grp_mac) 4049 grp_mac = mac; 4050 4051 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 4052 feat_cap, feat_cap_len); 4053 4054 if (prov_start) { 4055 if (session_info == NULL) { 4056 wpa_msg_global(wpa_s, MSG_INFO, 4057 P2P_EVENT_P2PS_PROVISION_START MACSTR 4058 " adv_id=%x conncap=%x" 4059 " adv_mac=" MACSTR 4060 " session=%x mac=" MACSTR 4061 " dev_passwd_id=%d%s", 4062 MAC2STR(dev), adv_id, conncap, 4063 MAC2STR(adv_mac), 4064 ses_id, MAC2STR(ses_mac), 4065 passwd_id, feat_cap_str); 4066 } else { 4067 wpa_msg_global(wpa_s, MSG_INFO, 4068 P2P_EVENT_P2PS_PROVISION_START MACSTR 4069 " adv_id=%x conncap=%x" 4070 " adv_mac=" MACSTR 4071 " session=%x mac=" MACSTR 4072 " dev_passwd_id=%d info='%s'%s", 4073 MAC2STR(dev), adv_id, conncap, 4074 MAC2STR(adv_mac), 4075 ses_id, MAC2STR(ses_mac), 4076 passwd_id, session_info, feat_cap_str); 4077 } 4078 return; 4079 } 4080 4081 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4082 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4083 4084 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4085 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4086 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4087 4088 if (persistent_go && !persistent_go->num_p2p_clients) { 4089 /* remove empty persistent GO */ 4090 wpa_dbg(wpa_s, MSG_DEBUG, 4091 "P2P: Remove empty persistent group id=%d", 4092 persistent_go->id); 4093 wpas_notify_persistent_group_removed(wpa_s, 4094 persistent_go); 4095 wpa_config_remove_network(wpa_s->conf, 4096 persistent_go->id); 4097 } 4098 4099 wpa_msg_global(wpa_s, MSG_INFO, 4100 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4101 " status=%d" 4102 " adv_id=%x adv_mac=" MACSTR 4103 " session=%x mac=" MACSTR "%s", 4104 MAC2STR(dev), status, 4105 adv_id, MAC2STR(adv_mac), 4106 ses_id, MAC2STR(ses_mac), feat_cap_str); 4107 return; 4108 } 4109 4110 /* Clean up stale persistent groups with this device */ 4111 if (persist_ssid && persist_ssid_size) 4112 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4113 persist_ssid_size); 4114 4115 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4116 is_zero_ether_addr(grp_mac)) { 4117 wpa_dbg(wpa_s, MSG_ERROR, 4118 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4119 return; 4120 } 4121 4122 for (;;) { 4123 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4124 if (!stale) 4125 break; 4126 4127 if (s && s->ssid_len == stale->ssid_len && 4128 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4129 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4130 break; 4131 4132 /* Remove stale persistent group */ 4133 if (stale->mode != WPAS_MODE_P2P_GO || 4134 stale->num_p2p_clients <= 1) { 4135 wpa_dbg(wpa_s, MSG_DEBUG, 4136 "P2P: Remove stale persistent group id=%d", 4137 stale->id); 4138 wpas_notify_persistent_group_removed(wpa_s, stale); 4139 wpa_config_remove_network(wpa_s->conf, stale->id); 4140 } else { 4141 size_t i; 4142 4143 for (i = 0; i < stale->num_p2p_clients; i++) { 4144 if (os_memcmp(stale->p2p_client_list + 4145 i * ETH_ALEN, 4146 dev, ETH_ALEN) == 0) { 4147 os_memmove(stale->p2p_client_list + 4148 i * ETH_ALEN, 4149 stale->p2p_client_list + 4150 (i + 1) * ETH_ALEN, 4151 (stale->num_p2p_clients - 4152 i - 1) * ETH_ALEN); 4153 break; 4154 } 4155 } 4156 stale->num_p2p_clients--; 4157 } 4158 save_config = 1; 4159 } 4160 4161 if (save_config) 4162 p2p_config_write(wpa_s); 4163 4164 if (s) { 4165 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4166 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4167 4168 if (persistent_go && s != persistent_go && 4169 !persistent_go->num_p2p_clients) { 4170 /* remove empty persistent GO */ 4171 wpa_dbg(wpa_s, MSG_DEBUG, 4172 "P2P: Remove empty persistent group id=%d", 4173 persistent_go->id); 4174 wpas_notify_persistent_group_removed(wpa_s, 4175 persistent_go); 4176 wpa_config_remove_network(wpa_s->conf, 4177 persistent_go->id); 4178 /* Save config */ 4179 } 4180 4181 wpa_msg_global(wpa_s, MSG_INFO, 4182 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4183 " status=%d" 4184 " adv_id=%x adv_mac=" MACSTR 4185 " session=%x mac=" MACSTR 4186 " persist=%d%s", 4187 MAC2STR(dev), status, 4188 adv_id, MAC2STR(adv_mac), 4189 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4190 return; 4191 } 4192 4193 wpa_s->global->pending_p2ps_group = 0; 4194 wpa_s->global->pending_p2ps_group_freq = 0; 4195 4196 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4197 /* 4198 * We need to copy the interface name. Simply saving a 4199 * pointer isn't enough, since if we use pending_interface_name 4200 * it will be overwritten when the group is added. 4201 */ 4202 char go_ifname[100]; 4203 4204 go_ifname[0] = '\0'; 4205 if (!go_wpa_s) { 4206 if (!response_done) { 4207 wpa_s->global->pending_p2ps_group = 1; 4208 wpa_s->global->pending_p2ps_group_freq = freq; 4209 } 4210 4211 if (!wpas_p2p_create_iface(wpa_s)) 4212 os_memcpy(go_ifname, wpa_s->ifname, 4213 sizeof(go_ifname)); 4214 else if (wpa_s->pending_interface_name[0]) 4215 os_memcpy(go_ifname, 4216 wpa_s->pending_interface_name, 4217 sizeof(go_ifname)); 4218 4219 if (!go_ifname[0]) { 4220 wpas_p2ps_prov_complete( 4221 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4222 dev, adv_mac, ses_mac, 4223 grp_mac, adv_id, ses_id, 0, 0, 4224 NULL, 0, 0, 0, NULL, NULL, 0, 0, 4225 NULL, 0); 4226 return; 4227 } 4228 4229 /* If PD Resp complete, start up the GO */ 4230 if (response_done && persistent_go) { 4231 wpas_p2p_group_add_persistent( 4232 wpa_s, persistent_go, 4233 0, 0, freq, 0, 0, 0, 0, 0, NULL, 4234 persistent_go->mode == 4235 WPAS_MODE_P2P_GO ? 4236 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4237 0, 0); 4238 } else if (response_done) { 4239 wpas_p2p_group_add(wpa_s, 1, freq, 4240 0, 0, 0, 0, 0); 4241 } 4242 4243 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4244 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4245 ETH_ALEN); 4246 wpa_s->p2ps_method_config_any = 1; 4247 } 4248 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4249 os_memcpy(go_ifname, go_wpa_s->ifname, 4250 sizeof(go_ifname)); 4251 4252 if (is_zero_ether_addr(grp_mac)) { 4253 wpa_dbg(go_wpa_s, MSG_DEBUG, 4254 "P2P: Setting PIN-1 for ANY"); 4255 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4256 "12345670", NULL, 0, 4257 0); 4258 } else { 4259 wpa_dbg(go_wpa_s, MSG_DEBUG, 4260 "P2P: Setting PIN-1 for " MACSTR, 4261 MAC2STR(grp_mac)); 4262 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4263 "12345670", NULL, 0, 4264 0); 4265 } 4266 4267 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4268 wpa_s->p2ps_method_config_any = 1; 4269 } 4270 4271 wpa_msg_global(wpa_s, MSG_INFO, 4272 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4273 " status=%d conncap=%x" 4274 " adv_id=%x adv_mac=" MACSTR 4275 " session=%x mac=" MACSTR 4276 " dev_passwd_id=%d go=%s%s", 4277 MAC2STR(dev), status, conncap, 4278 adv_id, MAC2STR(adv_mac), 4279 ses_id, MAC2STR(ses_mac), 4280 passwd_id, go_ifname, feat_cap_str); 4281 return; 4282 } 4283 4284 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4285 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4286 4287 if (persistent_go && !persistent_go->num_p2p_clients) { 4288 /* remove empty persistent GO */ 4289 wpa_dbg(wpa_s, MSG_DEBUG, 4290 "P2P: Remove empty persistent group id=%d", 4291 persistent_go->id); 4292 wpas_notify_persistent_group_removed(wpa_s, persistent_go); 4293 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4294 } 4295 4296 if (conncap == P2PS_SETUP_CLIENT) { 4297 char ssid_hex[32 * 2 + 1]; 4298 4299 if (group_ssid) 4300 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex), 4301 group_ssid, group_ssid_len); 4302 else 4303 ssid_hex[0] = '\0'; 4304 wpa_msg_global(wpa_s, MSG_INFO, 4305 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4306 " status=%d conncap=%x" 4307 " adv_id=%x adv_mac=" MACSTR 4308 " session=%x mac=" MACSTR 4309 " dev_passwd_id=%d join=" MACSTR "%s%s%s", 4310 MAC2STR(dev), status, conncap, 4311 adv_id, MAC2STR(adv_mac), 4312 ses_id, MAC2STR(ses_mac), 4313 passwd_id, MAC2STR(grp_mac), feat_cap_str, 4314 group_ssid ? " group_ssid=" : "", ssid_hex); 4315 } else { 4316 wpa_msg_global(wpa_s, MSG_INFO, 4317 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4318 " status=%d conncap=%x" 4319 " adv_id=%x adv_mac=" MACSTR 4320 " session=%x mac=" MACSTR 4321 " dev_passwd_id=%d%s", 4322 MAC2STR(dev), status, conncap, 4323 adv_id, MAC2STR(adv_mac), 4324 ses_id, MAC2STR(ses_mac), 4325 passwd_id, feat_cap_str); 4326 } 4327 } 4328 4329 4330 static int _wpas_p2p_in_progress(void *ctx) 4331 { 4332 struct wpa_supplicant *wpa_s = ctx; 4333 return wpas_p2p_in_progress(wpa_s); 4334 } 4335 4336 4337 static int wpas_prov_disc_resp_cb(void *ctx) 4338 { 4339 struct wpa_supplicant *wpa_s = ctx; 4340 struct wpa_ssid *persistent_go; 4341 unsigned int freq; 4342 4343 if (!wpa_s->global->pending_p2ps_group) 4344 return 0; 4345 4346 freq = wpa_s->global->pending_p2ps_group_freq; 4347 wpa_s->global->pending_p2ps_group_freq = 0; 4348 wpa_s->global->pending_p2ps_group = 0; 4349 4350 if (wpas_p2p_get_go_group(wpa_s)) 4351 return 0; 4352 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4353 4354 if (persistent_go) { 4355 wpas_p2p_group_add_persistent( 4356 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, 0, NULL, 4357 persistent_go->mode == WPAS_MODE_P2P_GO ? 4358 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4359 } else { 4360 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0, 0); 4361 } 4362 4363 return 1; 4364 } 4365 4366 4367 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4368 unsigned int *len, 4369 unsigned int *freq_list) 4370 { 4371 struct wpa_supplicant *wpa_s = ctx; 4372 4373 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4374 WPA_IF_P2P_CLIENT, len, freq_list); 4375 } 4376 4377 4378 int wpas_p2p_mac_setup(struct wpa_supplicant *wpa_s) 4379 { 4380 u8 addr[ETH_ALEN] = {0}; 4381 4382 if (wpa_s->conf->p2p_device_random_mac_addr == 0) 4383 return 0; 4384 4385 if (!wpa_s->conf->ssid) { 4386 if (random_mac_addr(addr) < 0) { 4387 wpa_msg(wpa_s, MSG_INFO, 4388 "Failed to generate random MAC address"); 4389 return -EINVAL; 4390 } 4391 4392 /* Store generated MAC address. */ 4393 os_memcpy(wpa_s->conf->p2p_device_persistent_mac_addr, addr, 4394 ETH_ALEN); 4395 } else { 4396 /* If there are existing saved groups, restore last MAC address. 4397 * if there is no last used MAC address, the last one is 4398 * factory MAC. */ 4399 if (is_zero_ether_addr( 4400 wpa_s->conf->p2p_device_persistent_mac_addr)) 4401 return 0; 4402 os_memcpy(addr, wpa_s->conf->p2p_device_persistent_mac_addr, 4403 ETH_ALEN); 4404 wpa_msg(wpa_s, MSG_DEBUG, "Restore last used MAC address."); 4405 } 4406 4407 if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) { 4408 wpa_msg(wpa_s, MSG_INFO, 4409 "Failed to set random MAC address"); 4410 return -EINVAL; 4411 } 4412 4413 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 4414 wpa_msg(wpa_s, MSG_INFO, 4415 "Could not update MAC address information"); 4416 return -EINVAL; 4417 } 4418 4419 wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR, 4420 MAC2STR(addr)); 4421 4422 return 0; 4423 } 4424 4425 4426 /** 4427 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4428 * @global: Pointer to global data from wpa_supplicant_init() 4429 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4430 * Returns: 0 on success, -1 on failure 4431 */ 4432 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4433 { 4434 struct p2p_config p2p; 4435 int i; 4436 4437 if (wpa_s->conf->p2p_disabled) 4438 return 0; 4439 4440 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4441 return 0; 4442 4443 if (global->p2p) 4444 return 0; 4445 4446 if (wpas_p2p_mac_setup(wpa_s) < 0) { 4447 wpa_msg(wpa_s, MSG_ERROR, 4448 "Failed to initialize P2P random MAC address."); 4449 return -1; 4450 } 4451 4452 os_memset(&p2p, 0, sizeof(p2p)); 4453 p2p.cb_ctx = wpa_s; 4454 p2p.debug_print = wpas_p2p_debug_print; 4455 p2p.p2p_scan = wpas_p2p_scan; 4456 p2p.send_action = wpas_send_action; 4457 p2p.send_action_done = wpas_send_action_done; 4458 p2p.go_neg_completed = wpas_go_neg_completed; 4459 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4460 p2p.dev_found = wpas_dev_found; 4461 p2p.dev_lost = wpas_dev_lost; 4462 p2p.find_stopped = wpas_find_stopped; 4463 p2p.start_listen = wpas_start_listen; 4464 p2p.stop_listen = wpas_stop_listen; 4465 p2p.send_probe_resp = wpas_send_probe_resp; 4466 p2p.sd_request = wpas_sd_request; 4467 p2p.sd_response = wpas_sd_response; 4468 p2p.prov_disc_req = wpas_prov_disc_req; 4469 p2p.prov_disc_resp = wpas_prov_disc_resp; 4470 p2p.prov_disc_fail = wpas_prov_disc_fail; 4471 p2p.invitation_process = wpas_invitation_process; 4472 p2p.invitation_received = wpas_invitation_received; 4473 p2p.invitation_result = wpas_invitation_result; 4474 p2p.get_noa = wpas_get_noa; 4475 p2p.go_connected = wpas_go_connected; 4476 p2p.presence_resp = wpas_presence_resp; 4477 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4478 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4479 p2p.get_persistent_group = wpas_get_persistent_group; 4480 p2p.get_go_info = wpas_get_go_info; 4481 p2p.remove_stale_groups = wpas_remove_stale_groups; 4482 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4483 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4484 p2p.p2ps_group_capability = p2ps_group_capability; 4485 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4486 4487 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4488 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4489 p2p.dev_name = wpa_s->conf->device_name; 4490 p2p.manufacturer = wpa_s->conf->manufacturer; 4491 p2p.model_name = wpa_s->conf->model_name; 4492 p2p.model_number = wpa_s->conf->model_number; 4493 p2p.serial_number = wpa_s->conf->serial_number; 4494 if (wpa_s->wps) { 4495 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4496 p2p.config_methods = wpa_s->wps->config_methods; 4497 } 4498 4499 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4500 wpa_printf(MSG_ERROR, 4501 "P2P: Failed to configure supported channel list"); 4502 return -1; 4503 } 4504 4505 if (wpa_s->conf->p2p_listen_reg_class && 4506 wpa_s->conf->p2p_listen_channel) { 4507 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4508 p2p.channel = wpa_s->conf->p2p_listen_channel; 4509 p2p.channel_forced = 1; 4510 } else { 4511 /* 4512 * Pick one of the social channels randomly as the listen 4513 * channel. 4514 */ 4515 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4516 &p2p.channel, 4517 &global->p2p_go_avoid_freq, 4518 &global->p2p_disallow_freq) != 4519 0) { 4520 wpa_printf(MSG_INFO, 4521 "P2P: No social channels supported by the driver - do not enable P2P"); 4522 return 0; 4523 } 4524 p2p.channel_forced = 0; 4525 } 4526 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4527 p2p.reg_class, p2p.channel); 4528 4529 if (wpa_s->conf->p2p_oper_reg_class && 4530 wpa_s->conf->p2p_oper_channel) { 4531 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4532 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4533 p2p.cfg_op_channel = 1; 4534 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4535 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4536 4537 } else { 4538 /* 4539 * Use random operation channel from 2.4 GHz band social 4540 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4541 * other preference is indicated. 4542 */ 4543 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4544 &p2p.op_channel, NULL, 4545 NULL) != 0) { 4546 wpa_printf(MSG_INFO, 4547 "P2P: Failed to select random social channel as operation channel"); 4548 p2p.op_reg_class = 0; 4549 p2p.op_channel = 0; 4550 /* This will be overridden during group setup in 4551 * p2p_prepare_channel(), so allow setup to continue. */ 4552 } 4553 p2p.cfg_op_channel = 0; 4554 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4555 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4556 } 4557 4558 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4559 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4560 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4561 } 4562 4563 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4564 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4565 p2p.country[2] = 0x04; 4566 } else 4567 os_memcpy(p2p.country, "XX\x04", 3); 4568 4569 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4570 WPS_DEV_TYPE_LEN); 4571 4572 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4573 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4574 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4575 4576 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4577 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4578 4579 p2p.max_peers = 100; 4580 4581 if (wpa_s->conf->p2p_ssid_postfix) { 4582 p2p.ssid_postfix_len = 4583 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4584 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4585 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4586 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4587 p2p.ssid_postfix_len); 4588 } 4589 4590 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4591 4592 p2p.max_listen = wpa_s->max_remain_on_chan; 4593 4594 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4595 wpa_s->conf->p2p_passphrase_len <= 63) 4596 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4597 else 4598 p2p.passphrase_len = 8; 4599 4600 global->p2p = p2p_init(&p2p); 4601 if (global->p2p == NULL) 4602 return -1; 4603 global->p2p_init_wpa_s = wpa_s; 4604 4605 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4606 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4607 continue; 4608 p2p_add_wps_vendor_extension( 4609 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4610 } 4611 4612 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4613 4614 return 0; 4615 } 4616 4617 4618 /** 4619 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4620 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4621 * 4622 * This function deinitialize per-interface P2P data. 4623 */ 4624 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4625 { 4626 if (wpa_s->driver && wpa_s->drv_priv) 4627 wpa_drv_probe_req_report(wpa_s, 0); 4628 4629 if (wpa_s->go_params) { 4630 /* Clear any stored provisioning info */ 4631 p2p_clear_provisioning_info( 4632 wpa_s->global->p2p, 4633 wpa_s->go_params->peer_device_addr); 4634 } 4635 4636 os_free(wpa_s->go_params); 4637 wpa_s->go_params = NULL; 4638 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4639 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4640 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4641 wpa_s->p2p_long_listen = 0; 4642 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4643 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4644 wpas_p2p_remove_pending_group_interface(wpa_s); 4645 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4646 wpas_p2p_listen_work_done(wpa_s); 4647 if (wpa_s->p2p_send_action_work) { 4648 os_free(wpa_s->p2p_send_action_work->ctx); 4649 radio_work_done(wpa_s->p2p_send_action_work); 4650 wpa_s->p2p_send_action_work = NULL; 4651 } 4652 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4653 4654 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4655 wpa_s->p2p_oob_dev_pw = NULL; 4656 4657 os_free(wpa_s->p2p_group_common_freqs); 4658 wpa_s->p2p_group_common_freqs = NULL; 4659 wpa_s->p2p_group_common_freqs_num = 0; 4660 4661 /* TODO: remove group interface from the driver if this wpa_s instance 4662 * is on top of a P2P group interface */ 4663 } 4664 4665 4666 /** 4667 * wpas_p2p_deinit_global - Deinitialize global P2P module 4668 * @global: Pointer to global data from wpa_supplicant_init() 4669 * 4670 * This function deinitializes the global (per device) P2P module. 4671 */ 4672 static void wpas_p2p_deinit_global(struct wpa_global *global) 4673 { 4674 struct wpa_supplicant *wpa_s, *tmp; 4675 4676 wpa_s = global->ifaces; 4677 4678 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4679 4680 /* Remove remaining P2P group interfaces */ 4681 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4682 wpa_s = wpa_s->next; 4683 while (wpa_s) { 4684 tmp = global->ifaces; 4685 while (tmp && 4686 (tmp == wpa_s || 4687 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4688 tmp = tmp->next; 4689 } 4690 if (tmp == NULL) 4691 break; 4692 /* Disconnect from the P2P group and deinit the interface */ 4693 wpas_p2p_disconnect(tmp); 4694 } 4695 4696 /* 4697 * Deinit GO data on any possibly remaining interface (if main 4698 * interface is used as GO). 4699 */ 4700 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4701 if (wpa_s->ap_iface) 4702 wpas_p2p_group_deinit(wpa_s); 4703 } 4704 4705 p2p_deinit(global->p2p); 4706 global->p2p = NULL; 4707 global->p2p_init_wpa_s = NULL; 4708 } 4709 4710 4711 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4712 { 4713 if (wpa_s->conf->p2p_no_group_iface) 4714 return 0; /* separate interface disabled per configuration */ 4715 if (wpa_s->drv_flags & 4716 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4717 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4718 return 1; /* P2P group requires a new interface in every case 4719 */ 4720 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4721 return 0; /* driver does not support concurrent operations */ 4722 if (wpa_s->global->ifaces->next) 4723 return 1; /* more that one interface already in use */ 4724 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4725 return 1; /* this interface is already in use */ 4726 return 0; 4727 } 4728 4729 4730 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4731 const u8 *peer_addr, 4732 enum p2p_wps_method wps_method, 4733 int go_intent, const u8 *own_interface_addr, 4734 unsigned int force_freq, int persistent_group, 4735 struct wpa_ssid *ssid, unsigned int pref_freq) 4736 { 4737 if (persistent_group && wpa_s->conf->persistent_reconnect) 4738 persistent_group = 2; 4739 4740 /* 4741 * Increase GO config timeout if HT40 is used since it takes some time 4742 * to scan channels for coex purposes before the BSS can be started. 4743 */ 4744 p2p_set_config_timeout(wpa_s->global->p2p, 4745 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4746 4747 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4748 go_intent, own_interface_addr, force_freq, 4749 persistent_group, ssid ? ssid->ssid : NULL, 4750 ssid ? ssid->ssid_len : 0, 4751 wpa_s->p2p_pd_before_go_neg, pref_freq, 4752 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4753 0); 4754 } 4755 4756 4757 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4758 const u8 *peer_addr, 4759 enum p2p_wps_method wps_method, 4760 int go_intent, const u8 *own_interface_addr, 4761 unsigned int force_freq, int persistent_group, 4762 struct wpa_ssid *ssid, unsigned int pref_freq) 4763 { 4764 if (persistent_group && wpa_s->conf->persistent_reconnect) 4765 persistent_group = 2; 4766 4767 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4768 go_intent, own_interface_addr, force_freq, 4769 persistent_group, ssid ? ssid->ssid : NULL, 4770 ssid ? ssid->ssid_len : 0, pref_freq, 4771 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4772 0); 4773 } 4774 4775 4776 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4777 { 4778 wpa_s->p2p_join_scan_count++; 4779 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4780 wpa_s->p2p_join_scan_count); 4781 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4782 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4783 " for join operationg - stop join attempt", 4784 MAC2STR(wpa_s->pending_join_iface_addr)); 4785 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4786 if (wpa_s->p2p_auto_pd) { 4787 wpa_s->p2p_auto_pd = 0; 4788 wpa_msg_global(wpa_s, MSG_INFO, 4789 P2P_EVENT_PROV_DISC_FAILURE 4790 " p2p_dev_addr=" MACSTR " status=N/A", 4791 MAC2STR(wpa_s->pending_join_dev_addr)); 4792 return; 4793 } 4794 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4795 P2P_EVENT_GROUP_FORMATION_FAILURE); 4796 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4797 } 4798 } 4799 4800 4801 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4802 { 4803 int res; 4804 unsigned int num, i; 4805 struct wpa_used_freq_data *freqs; 4806 4807 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4808 /* Multiple channels are supported and not all are in use */ 4809 return 0; 4810 } 4811 4812 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4813 sizeof(struct wpa_used_freq_data)); 4814 if (!freqs) 4815 return 1; 4816 4817 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4818 wpa_s->num_multichan_concurrent); 4819 4820 for (i = 0; i < num; i++) { 4821 if (freqs[i].freq == freq) { 4822 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4823 freq); 4824 res = 0; 4825 goto exit_free; 4826 } 4827 } 4828 4829 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4830 res = 1; 4831 4832 exit_free: 4833 os_free(freqs); 4834 return res; 4835 } 4836 4837 4838 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4839 const u8 *peer_dev_addr) 4840 { 4841 struct wpa_bss *bss; 4842 int updated; 4843 4844 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4845 if (bss == NULL) 4846 return -1; 4847 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4848 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4849 "last scan"); 4850 return 0; 4851 } 4852 4853 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4854 &bss->last_update); 4855 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4856 "%ld.%06ld (%supdated in last scan)", 4857 bss->last_update.sec, bss->last_update.usec, 4858 updated ? "": "not "); 4859 4860 return updated; 4861 } 4862 4863 4864 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4865 struct wpa_scan_results *scan_res) 4866 { 4867 struct wpa_bss *bss = NULL; 4868 int freq; 4869 u8 iface_addr[ETH_ALEN]; 4870 4871 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4872 4873 if (wpa_s->global->p2p_disabled) 4874 return; 4875 4876 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4877 scan_res ? (int) scan_res->num : -1, 4878 wpa_s->p2p_auto_join ? "auto_" : ""); 4879 4880 if (scan_res) 4881 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4882 4883 if (wpa_s->p2p_auto_pd) { 4884 int join = wpas_p2p_peer_go(wpa_s, 4885 wpa_s->pending_join_dev_addr); 4886 if (join == 0 && 4887 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4888 wpa_s->auto_pd_scan_retry++; 4889 bss = wpa_bss_get_bssid_latest( 4890 wpa_s, wpa_s->pending_join_dev_addr); 4891 if (bss) { 4892 freq = bss->freq; 4893 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4894 "the peer " MACSTR " at %d MHz", 4895 wpa_s->auto_pd_scan_retry, 4896 MAC2STR(wpa_s-> 4897 pending_join_dev_addr), 4898 freq); 4899 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4900 return; 4901 } 4902 } 4903 4904 if (join < 0) 4905 join = 0; 4906 4907 wpa_s->p2p_auto_pd = 0; 4908 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4909 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4910 MAC2STR(wpa_s->pending_join_dev_addr), join); 4911 if (p2p_prov_disc_req(wpa_s->global->p2p, 4912 wpa_s->pending_join_dev_addr, NULL, 4913 wpa_s->pending_pd_config_methods, join, 4914 0, wpa_s->user_initiated_pd) < 0) { 4915 wpa_s->p2p_auto_pd = 0; 4916 wpa_msg_global(wpa_s, MSG_INFO, 4917 P2P_EVENT_PROV_DISC_FAILURE 4918 " p2p_dev_addr=" MACSTR " status=N/A", 4919 MAC2STR(wpa_s->pending_join_dev_addr)); 4920 } 4921 return; 4922 } 4923 4924 if (wpa_s->p2p_auto_join) { 4925 int join = wpas_p2p_peer_go(wpa_s, 4926 wpa_s->pending_join_dev_addr); 4927 if (join < 0) { 4928 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4929 "running a GO -> use GO Negotiation"); 4930 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4931 P2P_EVENT_FALLBACK_TO_GO_NEG 4932 "reason=peer-not-running-GO"); 4933 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4934 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4935 wpa_s->p2p_persistent_group, 0, 0, 0, 4936 wpa_s->p2p_go_intent, 4937 wpa_s->p2p_connect_freq, 4938 wpa_s->p2p_go_vht_center_freq2, 4939 wpa_s->p2p_persistent_id, 4940 wpa_s->p2p_pd_before_go_neg, 4941 wpa_s->p2p_go_ht40, 4942 wpa_s->p2p_go_vht, 4943 wpa_s->p2p_go_max_oper_chwidth, 4944 wpa_s->p2p_go_he, 4945 NULL, 0); 4946 return; 4947 } 4948 4949 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4950 "try to join the group", join ? "" : 4951 " in older scan"); 4952 if (!join) { 4953 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4954 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4955 wpa_s->p2p_fallback_to_go_neg = 1; 4956 } 4957 } 4958 4959 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4960 wpa_s->pending_join_iface_addr); 4961 if (freq < 0 && 4962 p2p_get_interface_addr(wpa_s->global->p2p, 4963 wpa_s->pending_join_dev_addr, 4964 iface_addr) == 0 && 4965 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4966 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4967 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4968 "address for join from " MACSTR " to " MACSTR 4969 " based on newly discovered P2P peer entry", 4970 MAC2STR(wpa_s->pending_join_iface_addr), 4971 MAC2STR(iface_addr)); 4972 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4973 ETH_ALEN); 4974 4975 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4976 wpa_s->pending_join_iface_addr); 4977 } 4978 if (freq >= 0) { 4979 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4980 "from P2P peer table: %d MHz", freq); 4981 } 4982 if (wpa_s->p2p_join_ssid_len) { 4983 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4984 MACSTR " and SSID %s", 4985 MAC2STR(wpa_s->pending_join_iface_addr), 4986 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4987 wpa_s->p2p_join_ssid_len)); 4988 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4989 wpa_s->p2p_join_ssid, 4990 wpa_s->p2p_join_ssid_len); 4991 } else if (!bss) { 4992 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4993 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4994 bss = wpa_bss_get_bssid_latest(wpa_s, 4995 wpa_s->pending_join_iface_addr); 4996 } 4997 if (bss) { 4998 u8 dev_addr[ETH_ALEN]; 4999 5000 freq = bss->freq; 5001 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 5002 "from BSS table: %d MHz (SSID %s)", freq, 5003 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5004 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 5005 dev_addr) == 0 && 5006 os_memcmp(wpa_s->pending_join_dev_addr, 5007 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 5008 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 5009 ETH_ALEN) != 0) { 5010 wpa_printf(MSG_DEBUG, 5011 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 5012 MAC2STR(dev_addr), 5013 MAC2STR(wpa_s->pending_join_dev_addr)); 5014 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 5015 ETH_ALEN); 5016 } 5017 } 5018 if (freq > 0) { 5019 u16 method; 5020 5021 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 5022 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 5023 P2P_EVENT_GROUP_FORMATION_FAILURE 5024 "reason=FREQ_CONFLICT"); 5025 wpas_notify_p2p_group_formation_failure( 5026 wpa_s, "FREQ_CONFLICT"); 5027 return; 5028 } 5029 5030 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 5031 "prior to joining an existing group (GO " MACSTR 5032 " freq=%u MHz)", 5033 MAC2STR(wpa_s->pending_join_dev_addr), freq); 5034 wpa_s->pending_pd_before_join = 1; 5035 5036 switch (wpa_s->pending_join_wps_method) { 5037 case WPS_PIN_DISPLAY: 5038 method = WPS_CONFIG_KEYPAD; 5039 break; 5040 case WPS_PIN_KEYPAD: 5041 method = WPS_CONFIG_DISPLAY; 5042 break; 5043 case WPS_PBC: 5044 method = WPS_CONFIG_PUSHBUTTON; 5045 break; 5046 case WPS_P2PS: 5047 method = WPS_CONFIG_P2PS; 5048 break; 5049 default: 5050 method = 0; 5051 break; 5052 } 5053 5054 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 5055 wpa_s->pending_join_dev_addr) == 5056 method)) { 5057 /* 5058 * We have already performed provision discovery for 5059 * joining the group. Proceed directly to join 5060 * operation without duplicated provision discovery. */ 5061 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 5062 "with " MACSTR " already done - proceed to " 5063 "join", 5064 MAC2STR(wpa_s->pending_join_dev_addr)); 5065 wpa_s->pending_pd_before_join = 0; 5066 goto start; 5067 } 5068 5069 if (p2p_prov_disc_req(wpa_s->global->p2p, 5070 wpa_s->pending_join_dev_addr, 5071 NULL, method, 1, 5072 freq, wpa_s->user_initiated_pd) < 0) { 5073 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 5074 "Discovery Request before joining an " 5075 "existing group"); 5076 wpa_s->pending_pd_before_join = 0; 5077 goto start; 5078 } 5079 return; 5080 } 5081 5082 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 5083 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5084 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5085 wpas_p2p_check_join_scan_limit(wpa_s); 5086 return; 5087 5088 start: 5089 /* Start join operation immediately */ 5090 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid, 5091 wpa_s->p2p_join_ssid_len); 5092 } 5093 5094 5095 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 5096 const u8 *ssid, size_t ssid_len) 5097 { 5098 int ret; 5099 struct wpa_driver_scan_params params; 5100 struct wpabuf *wps_ie, *ies; 5101 size_t ielen; 5102 int freqs[2] = { 0, 0 }; 5103 unsigned int bands; 5104 5105 os_memset(¶ms, 0, sizeof(params)); 5106 5107 /* P2P Wildcard SSID */ 5108 params.num_ssids = 1; 5109 if (ssid && ssid_len) { 5110 params.ssids[0].ssid = ssid; 5111 params.ssids[0].ssid_len = ssid_len; 5112 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 5113 wpa_s->p2p_join_ssid_len = ssid_len; 5114 } else { 5115 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 5116 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 5117 wpa_s->p2p_join_ssid_len = 0; 5118 } 5119 5120 wpa_s->wps->dev.p2p = 1; 5121 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 5122 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 5123 NULL); 5124 if (wps_ie == NULL) { 5125 wpas_p2p_scan_res_join(wpa_s, NULL); 5126 return; 5127 } 5128 5129 if (!freq) { 5130 int oper_freq; 5131 /* 5132 * If freq is not provided, check the operating freq of the GO 5133 * and use a single channel scan on if possible. 5134 */ 5135 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 5136 wpa_s->pending_join_iface_addr); 5137 if (oper_freq > 0) 5138 freq = oper_freq; 5139 } 5140 if (freq > 0) { 5141 freqs[0] = freq; 5142 params.freqs = freqs; 5143 } 5144 5145 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 5146 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 5147 if (ies == NULL) { 5148 wpabuf_free(wps_ie); 5149 wpas_p2p_scan_res_join(wpa_s, NULL); 5150 return; 5151 } 5152 wpabuf_put_buf(ies, wps_ie); 5153 wpabuf_free(wps_ie); 5154 5155 bands = wpas_get_bands(wpa_s, freqs); 5156 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 5157 5158 params.p2p_probe = 1; 5159 params.extra_ies = wpabuf_head(ies); 5160 params.extra_ies_len = wpabuf_len(ies); 5161 5162 if (wpa_s->clear_driver_scan_cache) { 5163 wpa_printf(MSG_DEBUG, 5164 "Request driver to clear scan cache due to local BSS flush"); 5165 params.only_new_results = 1; 5166 } 5167 5168 /* 5169 * Run a scan to update BSS table and start Provision Discovery once 5170 * the new scan results become available. 5171 */ 5172 ret = wpa_drv_scan(wpa_s, ¶ms); 5173 if (!ret) { 5174 os_get_reltime(&wpa_s->scan_trigger_time); 5175 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 5176 wpa_s->own_scan_requested = 1; 5177 wpa_s->clear_driver_scan_cache = 0; 5178 } 5179 5180 wpabuf_free(ies); 5181 5182 if (ret) { 5183 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5184 "try again later"); 5185 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5186 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5187 wpas_p2p_check_join_scan_limit(wpa_s); 5188 } 5189 } 5190 5191 5192 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5193 { 5194 struct wpa_supplicant *wpa_s = eloop_ctx; 5195 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5196 } 5197 5198 5199 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5200 const u8 *dev_addr, enum p2p_wps_method wps_method, 5201 int auto_join, int op_freq, 5202 const u8 *ssid, size_t ssid_len) 5203 { 5204 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5205 MACSTR " dev " MACSTR " op_freq=%d)%s", 5206 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5207 auto_join ? " (auto_join)" : ""); 5208 if (ssid && ssid_len) { 5209 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5210 wpa_ssid_txt(ssid, ssid_len)); 5211 } 5212 5213 wpa_s->p2p_auto_pd = 0; 5214 wpa_s->p2p_auto_join = !!auto_join; 5215 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5216 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5217 wpa_s->pending_join_wps_method = wps_method; 5218 5219 /* Make sure we are not running find during connection establishment */ 5220 wpas_p2p_stop_find(wpa_s); 5221 5222 wpa_s->p2p_join_scan_count = 0; 5223 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5224 return 0; 5225 } 5226 5227 5228 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5229 const u8 *ssid, size_t ssid_len) 5230 { 5231 struct wpa_supplicant *group; 5232 struct p2p_go_neg_results res; 5233 struct wpa_bss *bss; 5234 5235 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5236 if (group == NULL) 5237 return -1; 5238 if (group != wpa_s) { 5239 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5240 sizeof(group->p2p_pin)); 5241 group->p2p_wps_method = wpa_s->p2p_wps_method; 5242 } 5243 5244 /* 5245 * Need to mark the current interface for p2p_group_formation 5246 * when a separate group interface is not used. This is needed 5247 * to allow p2p_cancel stop a pending p2p_connect-join. 5248 * wpas_p2p_init_group_interface() addresses this for the case 5249 * where a separate group interface is used. 5250 */ 5251 if (group == wpa_s->parent) 5252 wpa_s->global->p2p_group_formation = group; 5253 5254 group->p2p_in_provisioning = 1; 5255 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5256 5257 os_memset(&res, 0, sizeof(res)); 5258 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5259 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5260 ETH_ALEN); 5261 res.wps_method = wpa_s->pending_join_wps_method; 5262 if (freq && ssid && ssid_len) { 5263 res.freq = freq; 5264 res.ssid_len = ssid_len; 5265 os_memcpy(res.ssid, ssid, ssid_len); 5266 } else { 5267 if (ssid && ssid_len) { 5268 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 5269 ssid, ssid_len); 5270 } else { 5271 bss = wpa_bss_get_bssid_latest( 5272 wpa_s, wpa_s->pending_join_iface_addr); 5273 } 5274 if (bss) { 5275 res.freq = bss->freq; 5276 res.ssid_len = bss->ssid_len; 5277 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5278 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5279 bss->freq, 5280 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5281 } else if (ssid && ssid_len) { 5282 res.ssid_len = ssid_len; 5283 os_memcpy(res.ssid, ssid, ssid_len); 5284 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)", 5285 wpa_ssid_txt(ssid, ssid_len)); 5286 } 5287 } 5288 5289 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5290 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5291 "starting client"); 5292 wpa_drv_cancel_remain_on_channel(wpa_s); 5293 wpa_s->off_channel_freq = 0; 5294 wpa_s->roc_waiting_drv_freq = 0; 5295 } 5296 wpas_start_wps_enrollee(group, &res); 5297 5298 /* 5299 * Allow a longer timeout for join-a-running-group than normal 15 5300 * second group formation timeout since the GO may not have authorized 5301 * our connection yet. 5302 */ 5303 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5304 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5305 wpa_s, NULL); 5306 5307 return 0; 5308 } 5309 5310 5311 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5312 int *force_freq, int *pref_freq, int go, 5313 unsigned int *pref_freq_list, 5314 unsigned int *num_pref_freq) 5315 { 5316 struct wpa_used_freq_data *freqs; 5317 int res, best_freq, num_unused; 5318 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5319 5320 max_pref_freq = *num_pref_freq; 5321 *num_pref_freq = 0; 5322 5323 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5324 sizeof(struct wpa_used_freq_data)); 5325 if (!freqs) 5326 return -1; 5327 5328 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5329 wpa_s->num_multichan_concurrent); 5330 5331 /* 5332 * It is possible that the total number of used frequencies is bigger 5333 * than the number of frequencies used for P2P, so get the system wide 5334 * number of unused frequencies. 5335 */ 5336 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5337 5338 wpa_printf(MSG_DEBUG, 5339 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5340 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5341 5342 if (freq > 0) { 5343 int ret; 5344 if (go) 5345 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5346 else 5347 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5348 if (!ret) { 5349 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5350 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5351 wpa_s->hw.num_modes)) { 5352 /* 5353 * If freq is a DFS channel and DFS is offloaded 5354 * to the driver, allow P2P GO to use it. 5355 */ 5356 wpa_printf(MSG_DEBUG, 5357 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5358 freq); 5359 } else { 5360 wpa_printf(MSG_DEBUG, 5361 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5362 freq); 5363 res = -3; 5364 goto exit_free; 5365 } 5366 } 5367 5368 for (i = 0; i < num; i++) { 5369 if (freqs[i].freq == freq) 5370 freq_in_use = 1; 5371 } 5372 5373 if (num_unused <= 0 && !freq_in_use) { 5374 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5375 freq); 5376 res = -2; 5377 goto exit_free; 5378 } 5379 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5380 "requested channel (%u MHz)", freq); 5381 *force_freq = freq; 5382 goto exit_ok; 5383 } 5384 5385 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5386 5387 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5388 enum wpa_driver_if_type iface_type; 5389 5390 if (go) 5391 iface_type = WPA_IF_P2P_GO; 5392 else 5393 iface_type = WPA_IF_P2P_CLIENT; 5394 5395 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5396 best_freq, go); 5397 5398 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5399 &max_pref_freq, 5400 pref_freq_list); 5401 if (!res && max_pref_freq > 0) { 5402 *num_pref_freq = max_pref_freq; 5403 i = 0; 5404 while (i < *num_pref_freq && 5405 (!p2p_supported_freq(wpa_s->global->p2p, 5406 pref_freq_list[i]) || 5407 wpas_p2p_disallowed_freq(wpa_s->global, 5408 pref_freq_list[i]))) { 5409 wpa_printf(MSG_DEBUG, 5410 "P2P: preferred_freq_list[%d]=%d is disallowed", 5411 i, pref_freq_list[i]); 5412 i++; 5413 } 5414 if (i != *num_pref_freq) { 5415 best_freq = pref_freq_list[i]; 5416 wpa_printf(MSG_DEBUG, 5417 "P2P: Using preferred_freq_list[%d]=%d", 5418 i, best_freq); 5419 } else { 5420 wpa_printf(MSG_DEBUG, 5421 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5422 *num_pref_freq = 0; 5423 } 5424 } else { 5425 wpa_printf(MSG_DEBUG, 5426 "P2P: No preferred frequency list available"); 5427 } 5428 } 5429 5430 /* We have a candidate frequency to use */ 5431 if (best_freq > 0) { 5432 if (*pref_freq == 0 && num_unused > 0) { 5433 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5434 best_freq); 5435 *pref_freq = best_freq; 5436 } else { 5437 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5438 best_freq); 5439 *force_freq = best_freq; 5440 } 5441 } else if (num_unused > 0) { 5442 wpa_printf(MSG_DEBUG, 5443 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5444 *force_freq = 0; 5445 } else { 5446 wpa_printf(MSG_DEBUG, 5447 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5448 res = -2; 5449 goto exit_free; 5450 } 5451 5452 exit_ok: 5453 res = 0; 5454 exit_free: 5455 os_free(freqs); 5456 return res; 5457 } 5458 5459 5460 /** 5461 * wpas_p2p_connect - Request P2P Group Formation to be started 5462 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5463 * @peer_addr: Address of the peer P2P Device 5464 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5465 * @persistent_group: Whether to create a persistent group 5466 * @auto_join: Whether to select join vs. GO Negotiation automatically 5467 * @join: Whether to join an existing group (as a client) instead of starting 5468 * Group Owner negotiation; @peer_addr is BSSID in that case 5469 * @auth: Whether to only authorize the connection instead of doing that and 5470 * initiating Group Owner negotiation 5471 * @go_intent: GO Intent or -1 to use default 5472 * @freq: Frequency for the group or 0 for auto-selection 5473 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5474 * @persistent_id: Persistent group credentials to use for forcing GO 5475 * parameters or -1 to generate new values (SSID/passphrase) 5476 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5477 * interoperability workaround when initiating group formation 5478 * @ht40: Start GO with 40 MHz channel width 5479 * @vht: Start GO with VHT support 5480 * @vht_chwidth: Channel width supported by GO operating with VHT support 5481 * (CHANWIDTH_*). 5482 * @group_ssid: Specific Group SSID for join or %NULL if not set 5483 * @group_ssid_len: Length of @group_ssid in octets 5484 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5485 * failure, -2 on failure due to channel not currently available, 5486 * -3 if forced channel is not supported 5487 */ 5488 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5489 const char *pin, enum p2p_wps_method wps_method, 5490 int persistent_group, int auto_join, int join, int auth, 5491 int go_intent, int freq, unsigned int vht_center_freq2, 5492 int persistent_id, int pd, int ht40, int vht, 5493 unsigned int vht_chwidth, int he, const u8 *group_ssid, 5494 size_t group_ssid_len) 5495 { 5496 int force_freq = 0, pref_freq = 0; 5497 int ret = 0, res; 5498 enum wpa_driver_if_type iftype; 5499 const u8 *if_addr; 5500 struct wpa_ssid *ssid = NULL; 5501 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5502 5503 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5504 return -1; 5505 5506 if (persistent_id >= 0) { 5507 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5508 if (ssid == NULL || ssid->disabled != 2 || 5509 ssid->mode != WPAS_MODE_P2P_GO) 5510 return -1; 5511 } 5512 5513 os_free(wpa_s->global->add_psk); 5514 wpa_s->global->add_psk = NULL; 5515 5516 wpa_s->global->p2p_fail_on_wps_complete = 0; 5517 wpa_s->global->pending_p2ps_group = 0; 5518 wpa_s->global->pending_p2ps_group_freq = 0; 5519 wpa_s->p2ps_method_config_any = 0; 5520 5521 if (go_intent < 0) 5522 go_intent = wpa_s->conf->p2p_go_intent; 5523 5524 if (!auth) 5525 wpa_s->p2p_long_listen = 0; 5526 5527 wpa_s->p2p_wps_method = wps_method; 5528 wpa_s->p2p_persistent_group = !!persistent_group; 5529 wpa_s->p2p_persistent_id = persistent_id; 5530 wpa_s->p2p_go_intent = go_intent; 5531 wpa_s->p2p_connect_freq = freq; 5532 wpa_s->p2p_fallback_to_go_neg = 0; 5533 wpa_s->p2p_pd_before_go_neg = !!pd; 5534 wpa_s->p2p_go_ht40 = !!ht40; 5535 wpa_s->p2p_go_vht = !!vht; 5536 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5537 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5538 wpa_s->p2p_go_he = !!he; 5539 5540 if (pin) 5541 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5542 else if (wps_method == WPS_PIN_DISPLAY) { 5543 if (wps_generate_pin((unsigned int *) &ret) < 0) 5544 return -1; 5545 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5546 "%08d", ret); 5547 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5548 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5549 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5550 wpa_s->p2p_pin); 5551 } else if (wps_method == WPS_P2PS) { 5552 /* Force the P2Ps default PIN to be used */ 5553 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin)); 5554 } else 5555 wpa_s->p2p_pin[0] = '\0'; 5556 5557 if (join || auto_join) { 5558 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5559 if (auth) { 5560 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5561 "connect a running group from " MACSTR, 5562 MAC2STR(peer_addr)); 5563 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5564 return ret; 5565 } 5566 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5567 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5568 iface_addr) < 0) { 5569 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5570 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5571 dev_addr); 5572 } 5573 if (auto_join) { 5574 os_get_reltime(&wpa_s->p2p_auto_started); 5575 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5576 "%ld.%06ld", 5577 wpa_s->p2p_auto_started.sec, 5578 wpa_s->p2p_auto_started.usec); 5579 } 5580 wpa_s->user_initiated_pd = 1; 5581 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5582 auto_join, freq, 5583 group_ssid, group_ssid_len) < 0) 5584 return -1; 5585 return ret; 5586 } 5587 5588 size = P2P_MAX_PREF_CHANNELS; 5589 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5590 go_intent == 15, pref_freq_list, &size); 5591 if (res) 5592 return res; 5593 wpas_p2p_set_own_freq_preference(wpa_s, 5594 force_freq ? force_freq : pref_freq); 5595 5596 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5597 5598 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5599 5600 if (wpa_s->create_p2p_iface) { 5601 /* Prepare to add a new interface for the group */ 5602 iftype = WPA_IF_P2P_GROUP; 5603 if (go_intent == 15) 5604 iftype = WPA_IF_P2P_GO; 5605 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5606 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5607 "interface for the group"); 5608 return -1; 5609 } 5610 5611 if_addr = wpa_s->pending_interface_addr; 5612 } else { 5613 if (wpa_s->p2p_mgmt) 5614 if_addr = wpa_s->parent->own_addr; 5615 else 5616 if_addr = wpa_s->own_addr; 5617 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5618 } 5619 5620 if (auth) { 5621 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5622 go_intent, if_addr, 5623 force_freq, persistent_group, ssid, 5624 pref_freq) < 0) 5625 return -1; 5626 return ret; 5627 } 5628 5629 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5630 go_intent, if_addr, force_freq, 5631 persistent_group, ssid, pref_freq) < 0) { 5632 if (wpa_s->create_p2p_iface) 5633 wpas_p2p_remove_pending_group_interface(wpa_s); 5634 return -1; 5635 } 5636 return ret; 5637 } 5638 5639 5640 /** 5641 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5642 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5643 * @freq: Frequency of the channel in MHz 5644 * @duration: Duration of the stay on the channel in milliseconds 5645 * 5646 * This callback is called when the driver indicates that it has started the 5647 * requested remain-on-channel duration. 5648 */ 5649 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5650 unsigned int freq, unsigned int duration) 5651 { 5652 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5653 return; 5654 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)", 5655 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5656 wpa_s->roc_waiting_drv_freq, freq, duration); 5657 if (wpa_s->off_channel_freq && 5658 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5659 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5660 wpa_s->pending_listen_duration); 5661 wpa_s->pending_listen_freq = 0; 5662 } else { 5663 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5664 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5665 freq, duration); 5666 } 5667 } 5668 5669 5670 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5671 { 5672 /* Limit maximum Listen state time based on driver limitation. */ 5673 if (timeout > wpa_s->max_remain_on_chan) 5674 timeout = wpa_s->max_remain_on_chan; 5675 5676 return p2p_listen(wpa_s->global->p2p, timeout); 5677 } 5678 5679 5680 /** 5681 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5682 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5683 * @freq: Frequency of the channel in MHz 5684 * 5685 * This callback is called when the driver indicates that a remain-on-channel 5686 * operation has been completed, i.e., the duration on the requested channel 5687 * has timed out. 5688 */ 5689 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5690 unsigned int freq) 5691 { 5692 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5693 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5694 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5695 wpas_p2p_listen_work_done(wpa_s); 5696 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5697 return; 5698 if (wpa_s->p2p_long_listen > 0) 5699 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5700 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5701 return; /* P2P module started a new operation */ 5702 if (offchannel_pending_action_tx(wpa_s)) 5703 return; 5704 if (wpa_s->p2p_long_listen > 0) { 5705 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5706 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5707 } else { 5708 /* 5709 * When listen duration is over, stop listen & update p2p_state 5710 * to IDLE. 5711 */ 5712 p2p_stop_listen(wpa_s->global->p2p); 5713 } 5714 } 5715 5716 5717 /** 5718 * wpas_p2p_group_remove - Remove a P2P group 5719 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5720 * @ifname: Network interface name of the group interface or "*" to remove all 5721 * groups 5722 * Returns: 0 on success, -1 on failure 5723 * 5724 * This function is used to remove a P2P group. This can be used to disconnect 5725 * from a group in which the local end is a P2P Client or to end a P2P Group in 5726 * case the local end is the Group Owner. If a virtual network interface was 5727 * created for this group, that interface will be removed. Otherwise, only the 5728 * configured P2P group network will be removed from the interface. 5729 */ 5730 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5731 { 5732 struct wpa_global *global = wpa_s->global; 5733 struct wpa_supplicant *calling_wpa_s = wpa_s; 5734 5735 if (os_strcmp(ifname, "*") == 0) { 5736 struct wpa_supplicant *prev; 5737 wpa_s = global->ifaces; 5738 while (wpa_s) { 5739 prev = wpa_s; 5740 wpa_s = wpa_s->next; 5741 if (prev->p2p_group_interface != 5742 NOT_P2P_GROUP_INTERFACE || 5743 (prev->current_ssid && 5744 prev->current_ssid->p2p_group)) 5745 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5746 } 5747 return 0; 5748 } 5749 5750 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5751 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5752 break; 5753 } 5754 5755 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5756 } 5757 5758 5759 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5760 { 5761 unsigned int r; 5762 5763 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5764 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5765 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5766 int res; 5767 5768 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5769 &size, pref_freq_list); 5770 if (!res && size > 0) { 5771 i = 0; 5772 while (i < size && 5773 (!p2p_supported_freq(wpa_s->global->p2p, 5774 pref_freq_list[i]) || 5775 wpas_p2p_disallowed_freq(wpa_s->global, 5776 pref_freq_list[i]))) { 5777 wpa_printf(MSG_DEBUG, 5778 "P2P: preferred_freq_list[%d]=%d is disallowed", 5779 i, pref_freq_list[i]); 5780 i++; 5781 } 5782 if (i != size) { 5783 freq = pref_freq_list[i]; 5784 wpa_printf(MSG_DEBUG, 5785 "P2P: Using preferred_freq_list[%d]=%d", 5786 i, freq); 5787 } else { 5788 wpa_printf(MSG_DEBUG, 5789 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5790 } 5791 } else { 5792 wpa_printf(MSG_DEBUG, 5793 "P2P: No preferred frequency list available"); 5794 } 5795 } 5796 5797 if (freq == 2) { 5798 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5799 "band"); 5800 if (wpa_s->best_24_freq > 0 && 5801 p2p_supported_freq_go(wpa_s->global->p2p, 5802 wpa_s->best_24_freq)) { 5803 freq = wpa_s->best_24_freq; 5804 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5805 "channel: %d MHz", freq); 5806 } else { 5807 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5808 return -1; 5809 freq = 2412 + (r % 3) * 25; 5810 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5811 "channel: %d MHz", freq); 5812 } 5813 } 5814 5815 if (freq == 5) { 5816 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5817 "band"); 5818 if (wpa_s->best_5_freq > 0 && 5819 p2p_supported_freq_go(wpa_s->global->p2p, 5820 wpa_s->best_5_freq)) { 5821 freq = wpa_s->best_5_freq; 5822 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5823 "channel: %d MHz", freq); 5824 } else { 5825 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5826 return -1; 5827 freq = 5180 + (r % 4) * 20; 5828 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5829 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5830 "5 GHz channel for P2P group"); 5831 return -1; 5832 } 5833 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5834 "channel: %d MHz", freq); 5835 } 5836 } 5837 5838 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5839 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5840 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5841 wpa_s->hw.num_modes)) { 5842 /* 5843 * If freq is a DFS channel and DFS is offloaded to the 5844 * driver, allow P2P GO to use it. 5845 */ 5846 wpa_printf(MSG_DEBUG, "P2P: " 5847 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5848 __func__, freq); 5849 return freq; 5850 } 5851 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5852 "(%u MHz) is not supported for P2P uses", 5853 freq); 5854 return -1; 5855 } 5856 5857 return freq; 5858 } 5859 5860 5861 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5862 const struct p2p_channels *channels, 5863 int freq) 5864 { 5865 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5866 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5867 freq_included(wpa_s, channels, freq)) 5868 return 1; 5869 return 0; 5870 } 5871 5872 5873 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5874 struct p2p_go_neg_results *params, 5875 const struct p2p_channels *channels) 5876 { 5877 unsigned int i, r; 5878 5879 /* try all channels in operating class 115 */ 5880 for (i = 0; i < 4; i++) { 5881 params->freq = 5180 + i * 20; 5882 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5883 freq_included(wpa_s, channels, params->freq) && 5884 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5885 goto out; 5886 } 5887 5888 /* try all channels in operating class 124 */ 5889 for (i = 0; i < 4; i++) { 5890 params->freq = 5745 + i * 20; 5891 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5892 freq_included(wpa_s, channels, params->freq) && 5893 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5894 goto out; 5895 } 5896 5897 /* try social channel class 180 channel 2 */ 5898 params->freq = 58320 + 1 * 2160; 5899 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5900 freq_included(wpa_s, channels, params->freq) && 5901 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5902 goto out; 5903 5904 /* try all channels in reg. class 180 */ 5905 for (i = 0; i < 4; i++) { 5906 params->freq = 58320 + i * 2160; 5907 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5908 freq_included(wpa_s, channels, params->freq) && 5909 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5910 goto out; 5911 } 5912 5913 /* try some random selection of the social channels */ 5914 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5915 return; 5916 5917 for (i = 0; i < 3; i++) { 5918 params->freq = 2412 + ((r + i) % 3) * 25; 5919 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5920 goto out; 5921 } 5922 5923 /* try all other channels in operating class 81 */ 5924 for (i = 0; i < 11; i++) { 5925 params->freq = 2412 + i * 5; 5926 5927 /* skip social channels; covered in the previous loop */ 5928 if (params->freq == 2412 || 5929 params->freq == 2437 || 5930 params->freq == 2462) 5931 continue; 5932 5933 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5934 goto out; 5935 } 5936 5937 params->freq = 0; 5938 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5939 return; 5940 out: 5941 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5942 params->freq); 5943 } 5944 5945 5946 static int wpas_same_band(int freq1, int freq2) 5947 { 5948 enum hostapd_hw_mode mode1, mode2; 5949 u8 chan1, chan2; 5950 5951 mode1 = ieee80211_freq_to_chan(freq1, &chan1); 5952 mode2 = ieee80211_freq_to_chan(freq2, &chan2); 5953 if (mode1 == NUM_HOSTAPD_MODES) 5954 return 0; 5955 return mode1 == mode2; 5956 } 5957 5958 5959 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5960 struct p2p_go_neg_results *params, 5961 int freq, int vht_center_freq2, int ht40, 5962 int vht, int max_oper_chwidth, int he, 5963 const struct p2p_channels *channels) 5964 { 5965 struct wpa_used_freq_data *freqs; 5966 unsigned int cand; 5967 unsigned int num, i; 5968 int ignore_no_freqs = 0; 5969 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0; 5970 5971 os_memset(params, 0, sizeof(*params)); 5972 params->role_go = 1; 5973 params->ht40 = ht40; 5974 params->vht = vht; 5975 params->he = he; 5976 params->max_oper_chwidth = max_oper_chwidth; 5977 params->vht_center_freq2 = vht_center_freq2; 5978 5979 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5980 sizeof(struct wpa_used_freq_data)); 5981 if (!freqs) 5982 return -1; 5983 5984 num = get_shared_radio_freqs_data(wpa_s, freqs, 5985 wpa_s->num_multichan_concurrent); 5986 5987 if (wpa_s->current_ssid && 5988 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5989 wpa_s->wpa_state == WPA_COMPLETED) { 5990 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5991 __func__); 5992 5993 /* 5994 * If the frequency selection is done for an active P2P GO that 5995 * is not sharing a frequency, allow to select a new frequency 5996 * even if there are no unused frequencies as we are about to 5997 * move the P2P GO so its frequency can be re-used. 5998 */ 5999 for (i = 0; i < num; i++) { 6000 if (freqs[i].freq == wpa_s->current_ssid->frequency && 6001 freqs[i].flags == 0) { 6002 ignore_no_freqs = 1; 6003 break; 6004 } 6005 } 6006 } 6007 6008 /* try using the forced freq */ 6009 if (freq) { 6010 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) || 6011 !freq_included(wpa_s, channels, freq)) { 6012 wpa_printf(MSG_DEBUG, 6013 "P2P: Forced GO freq %d MHz disallowed", 6014 freq); 6015 goto fail; 6016 } 6017 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 6018 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 6019 ieee80211_is_dfs(freq, wpa_s->hw.modes, 6020 wpa_s->hw.num_modes)) { 6021 /* 6022 * If freq is a DFS channel and DFS is offloaded 6023 * to the driver, allow P2P GO to use it. 6024 */ 6025 wpa_printf(MSG_DEBUG, 6026 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded", 6027 __func__, freq); 6028 } else { 6029 wpa_printf(MSG_DEBUG, 6030 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses", 6031 freq); 6032 goto fail; 6033 } 6034 } 6035 6036 for (i = 0; i < num; i++) { 6037 if (freqs[i].freq == freq) { 6038 wpa_printf(MSG_DEBUG, 6039 "P2P: forced freq (%d MHz) is also shared", 6040 freq); 6041 params->freq = freq; 6042 goto success; 6043 } 6044 } 6045 6046 if (!ignore_no_freqs && !unused_channels) { 6047 wpa_printf(MSG_DEBUG, 6048 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 6049 freq); 6050 goto fail; 6051 } 6052 6053 wpa_printf(MSG_DEBUG, 6054 "P2P: force GO freq (%d MHz) on a free channel", 6055 freq); 6056 params->freq = freq; 6057 goto success; 6058 } 6059 6060 /* consider using one of the shared frequencies */ 6061 if (num && 6062 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) { 6063 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 6064 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6065 wpa_printf(MSG_DEBUG, 6066 "P2P: Use shared freq (%d MHz) for GO", 6067 cand); 6068 params->freq = cand; 6069 goto success; 6070 } 6071 6072 /* try using one of the shared freqs */ 6073 for (i = 0; i < num; i++) { 6074 if (wpas_p2p_supported_freq_go(wpa_s, channels, 6075 freqs[i].freq)) { 6076 wpa_printf(MSG_DEBUG, 6077 "P2P: Use shared freq (%d MHz) for GO", 6078 freqs[i].freq); 6079 params->freq = freqs[i].freq; 6080 goto success; 6081 } 6082 } 6083 } 6084 6085 if (!ignore_no_freqs && !unused_channels) { 6086 wpa_printf(MSG_DEBUG, 6087 "P2P: Cannot force GO on any of the channels we are already using"); 6088 goto fail; 6089 } 6090 6091 /* try using the setting from the configuration file */ 6092 if (wpa_s->conf->p2p_oper_reg_class == 81 && 6093 wpa_s->conf->p2p_oper_channel >= 1 && 6094 wpa_s->conf->p2p_oper_channel <= 11 && 6095 wpas_p2p_supported_freq_go( 6096 wpa_s, channels, 6097 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 6098 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 6099 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 6100 "frequency %d MHz", params->freq); 6101 goto success; 6102 } 6103 6104 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 6105 wpa_s->conf->p2p_oper_reg_class == 116 || 6106 wpa_s->conf->p2p_oper_reg_class == 117 || 6107 wpa_s->conf->p2p_oper_reg_class == 124 || 6108 wpa_s->conf->p2p_oper_reg_class == 125 || 6109 wpa_s->conf->p2p_oper_reg_class == 126 || 6110 wpa_s->conf->p2p_oper_reg_class == 127) && 6111 wpas_p2p_supported_freq_go(wpa_s, channels, 6112 5000 + 6113 5 * wpa_s->conf->p2p_oper_channel)) { 6114 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 6115 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 6116 "frequency %d MHz", params->freq); 6117 goto success; 6118 } 6119 6120 /* Try using best channels */ 6121 if (wpa_s->conf->p2p_oper_channel == 0 && 6122 wpa_s->best_overall_freq > 0 && 6123 wpas_p2p_supported_freq_go(wpa_s, channels, 6124 wpa_s->best_overall_freq)) { 6125 params->freq = wpa_s->best_overall_freq; 6126 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 6127 "channel %d MHz", params->freq); 6128 goto success; 6129 } 6130 6131 if (wpa_s->conf->p2p_oper_channel == 0 && 6132 wpa_s->best_24_freq > 0 && 6133 wpas_p2p_supported_freq_go(wpa_s, channels, 6134 wpa_s->best_24_freq)) { 6135 params->freq = wpa_s->best_24_freq; 6136 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 6137 "channel %d MHz", params->freq); 6138 goto success; 6139 } 6140 6141 if (wpa_s->conf->p2p_oper_channel == 0 && 6142 wpa_s->best_5_freq > 0 && 6143 wpas_p2p_supported_freq_go(wpa_s, channels, 6144 wpa_s->best_5_freq)) { 6145 params->freq = wpa_s->best_5_freq; 6146 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 6147 "channel %d MHz", params->freq); 6148 goto success; 6149 } 6150 6151 /* try using preferred channels */ 6152 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 6153 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6154 params->freq = cand; 6155 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 6156 "channels", params->freq); 6157 goto success; 6158 } 6159 6160 /* Try using a channel that allows VHT to be used with 80 MHz */ 6161 if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) { 6162 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6163 enum hostapd_hw_mode mode; 6164 struct hostapd_hw_modes *hwmode; 6165 u8 chan; 6166 6167 cand = wpa_s->p2p_group_common_freqs[i]; 6168 mode = ieee80211_freq_to_chan(cand, &chan); 6169 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6170 mode); 6171 if (!hwmode || 6172 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6173 BW80) != ALLOWED) 6174 continue; 6175 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6176 params->freq = cand; 6177 wpa_printf(MSG_DEBUG, 6178 "P2P: Use freq %d MHz common with the peer and allowing VHT80", 6179 params->freq); 6180 goto success; 6181 } 6182 } 6183 } 6184 6185 /* Try using a channel that allows HT to be used with 40 MHz on the same 6186 * band so that CSA can be used */ 6187 if (wpa_s->current_ssid && wpa_s->hw.modes && 6188 wpa_s->p2p_group_common_freqs) { 6189 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6190 enum hostapd_hw_mode mode; 6191 struct hostapd_hw_modes *hwmode; 6192 u8 chan; 6193 6194 cand = wpa_s->p2p_group_common_freqs[i]; 6195 mode = ieee80211_freq_to_chan(cand, &chan); 6196 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6197 mode); 6198 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6199 cand) || 6200 !hwmode || 6201 (wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6202 BW40MINUS) != ALLOWED && 6203 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6204 BW40PLUS) != ALLOWED)) 6205 continue; 6206 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6207 params->freq = cand; 6208 wpa_printf(MSG_DEBUG, 6209 "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band", 6210 params->freq); 6211 goto success; 6212 } 6213 } 6214 } 6215 6216 /* Try using one of the group common freqs on the same band so that CSA 6217 * can be used */ 6218 if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) { 6219 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6220 cand = wpa_s->p2p_group_common_freqs[i]; 6221 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6222 cand)) 6223 continue; 6224 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6225 params->freq = cand; 6226 wpa_printf(MSG_DEBUG, 6227 "P2P: Use freq %d MHz common with the peer and maintaining same band", 6228 params->freq); 6229 goto success; 6230 } 6231 } 6232 } 6233 6234 /* Try using one of the group common freqs */ 6235 if (wpa_s->p2p_group_common_freqs) { 6236 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6237 cand = wpa_s->p2p_group_common_freqs[i]; 6238 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6239 params->freq = cand; 6240 wpa_printf(MSG_DEBUG, 6241 "P2P: Use freq %d MHz common with the peer", 6242 params->freq); 6243 goto success; 6244 } 6245 } 6246 } 6247 6248 /* no preference, select some channel */ 6249 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 6250 6251 if (params->freq == 0) { 6252 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 6253 goto fail; 6254 } 6255 6256 success: 6257 os_free(freqs); 6258 return 0; 6259 fail: 6260 os_free(freqs); 6261 return -1; 6262 } 6263 6264 6265 static struct wpa_supplicant * 6266 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 6267 int go) 6268 { 6269 struct wpa_supplicant *group_wpa_s; 6270 6271 if (!wpas_p2p_create_iface(wpa_s)) { 6272 if (wpa_s->p2p_mgmt) { 6273 /* 6274 * We may be called on the p2p_dev interface which 6275 * cannot be used for group operations, so always use 6276 * the primary interface. 6277 */ 6278 wpa_s->parent->p2pdev = wpa_s; 6279 wpa_s = wpa_s->parent; 6280 } 6281 wpa_dbg(wpa_s, MSG_DEBUG, 6282 "P2P: Use primary interface for group operations"); 6283 wpa_s->p2p_first_connection_timeout = 0; 6284 if (wpa_s != wpa_s->p2pdev) 6285 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev); 6286 return wpa_s; 6287 } 6288 6289 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 6290 WPA_IF_P2P_CLIENT) < 0) { 6291 wpa_msg_global(wpa_s, MSG_ERROR, 6292 "P2P: Failed to add group interface"); 6293 return NULL; 6294 } 6295 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 6296 if (group_wpa_s == NULL) { 6297 wpa_msg_global(wpa_s, MSG_ERROR, 6298 "P2P: Failed to initialize group interface"); 6299 wpas_p2p_remove_pending_group_interface(wpa_s); 6300 return NULL; 6301 } 6302 6303 if (go && wpa_s->p2p_go_do_acs) { 6304 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs; 6305 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band; 6306 wpa_s->p2p_go_do_acs = 0; 6307 } 6308 6309 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 6310 group_wpa_s->ifname); 6311 group_wpa_s->p2p_first_connection_timeout = 0; 6312 return group_wpa_s; 6313 } 6314 6315 6316 /** 6317 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 6318 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 6319 * @persistent_group: Whether to create a persistent group 6320 * @freq: Frequency for the group or 0 to indicate no hardcoding 6321 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 6322 * @ht40: Start GO with 40 MHz channel width 6323 * @vht: Start GO with VHT support 6324 * @vht_chwidth: channel bandwidth for GO operating with VHT support 6325 * Returns: 0 on success, -1 on failure 6326 * 6327 * This function creates a new P2P group with the local end as the Group Owner, 6328 * i.e., without using Group Owner Negotiation. 6329 */ 6330 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 6331 int freq, int vht_center_freq2, int ht40, int vht, 6332 int max_oper_chwidth, int he) 6333 { 6334 struct p2p_go_neg_results params; 6335 6336 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6337 return -1; 6338 6339 os_free(wpa_s->global->add_psk); 6340 wpa_s->global->add_psk = NULL; 6341 6342 /* Make sure we are not running find during connection establishment */ 6343 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6344 wpas_p2p_stop_find_oper(wpa_s); 6345 6346 if (!wpa_s->p2p_go_do_acs) { 6347 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6348 if (freq < 0) 6349 return -1; 6350 } 6351 6352 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6353 ht40, vht, max_oper_chwidth, he, NULL)) 6354 return -1; 6355 6356 p2p_go_params(wpa_s->global->p2p, ¶ms); 6357 params.persistent_group = persistent_group; 6358 6359 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6360 if (wpa_s == NULL) 6361 return -1; 6362 wpas_start_wps_go(wpa_s, ¶ms, 0); 6363 6364 return 0; 6365 } 6366 6367 6368 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6369 struct wpa_ssid *params, int addr_allocated, 6370 int freq, int force_scan) 6371 { 6372 struct wpa_ssid *ssid; 6373 6374 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6375 if (wpa_s == NULL) 6376 return -1; 6377 if (force_scan) 6378 os_get_reltime(&wpa_s->scan_min_time); 6379 wpa_s->p2p_last_4way_hs_fail = NULL; 6380 6381 wpa_supplicant_ap_deinit(wpa_s); 6382 6383 ssid = wpa_config_add_network(wpa_s->conf); 6384 if (ssid == NULL) 6385 return -1; 6386 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6387 wpa_config_set_network_defaults(ssid); 6388 ssid->temporary = 1; 6389 ssid->proto = WPA_PROTO_RSN; 6390 ssid->pbss = params->pbss; 6391 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP : 6392 WPA_CIPHER_CCMP; 6393 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 6394 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6395 ssid->ssid = os_malloc(params->ssid_len); 6396 if (ssid->ssid == NULL) { 6397 wpa_config_remove_network(wpa_s->conf, ssid->id); 6398 return -1; 6399 } 6400 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6401 ssid->ssid_len = params->ssid_len; 6402 ssid->p2p_group = 1; 6403 ssid->export_keys = 1; 6404 if (params->psk_set) { 6405 os_memcpy(ssid->psk, params->psk, 32); 6406 ssid->psk_set = 1; 6407 } 6408 if (params->passphrase) 6409 ssid->passphrase = os_strdup(params->passphrase); 6410 6411 wpa_s->show_group_started = 1; 6412 wpa_s->p2p_in_invitation = 1; 6413 wpa_s->p2p_invite_go_freq = freq; 6414 wpa_s->p2p_go_group_formation_completed = 0; 6415 wpa_s->global->p2p_group_formation = wpa_s; 6416 6417 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6418 NULL); 6419 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6420 wpas_p2p_group_formation_timeout, 6421 wpa_s->p2pdev, NULL); 6422 wpa_supplicant_select_network(wpa_s, ssid); 6423 6424 return 0; 6425 } 6426 6427 6428 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6429 struct wpa_ssid *ssid, int addr_allocated, 6430 int force_freq, int neg_freq, 6431 int vht_center_freq2, int ht40, 6432 int vht, int max_oper_chwidth, int he, 6433 const struct p2p_channels *channels, 6434 int connection_timeout, int force_scan) 6435 { 6436 struct p2p_go_neg_results params; 6437 int go = 0, freq; 6438 6439 if (ssid->disabled != 2 || ssid->ssid == NULL) 6440 return -1; 6441 6442 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6443 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6444 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6445 "already running"); 6446 if (go == 0 && 6447 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6448 wpa_s->p2pdev, NULL)) { 6449 /* 6450 * This can happen if Invitation Response frame was lost 6451 * and the peer (GO of a persistent group) tries to 6452 * invite us again. Reschedule the timeout to avoid 6453 * terminating the wait for the connection too early 6454 * since we now know that the peer is still trying to 6455 * invite us instead of having already started the GO. 6456 */ 6457 wpa_printf(MSG_DEBUG, 6458 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6459 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6460 wpas_p2p_group_formation_timeout, 6461 wpa_s->p2pdev, NULL); 6462 } 6463 return 0; 6464 } 6465 6466 os_free(wpa_s->global->add_psk); 6467 wpa_s->global->add_psk = NULL; 6468 6469 /* Make sure we are not running find during connection establishment */ 6470 wpas_p2p_stop_find_oper(wpa_s); 6471 6472 wpa_s->p2p_fallback_to_go_neg = 0; 6473 6474 if (ssid->mode == WPAS_MODE_P2P_GO) { 6475 if (force_freq > 0) { 6476 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6477 if (freq < 0) 6478 return -1; 6479 } else { 6480 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6481 if (freq < 0 || 6482 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6483 freq = 0; 6484 } 6485 } else if (ssid->mode == WPAS_MODE_INFRA) { 6486 freq = neg_freq; 6487 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6488 struct os_reltime now; 6489 struct wpa_bss *bss = 6490 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6491 6492 os_get_reltime(&now); 6493 if (bss && 6494 !os_reltime_expired(&now, &bss->last_update, 5) && 6495 freq_included(wpa_s, channels, bss->freq)) 6496 freq = bss->freq; 6497 else 6498 freq = 0; 6499 } 6500 6501 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6502 force_scan); 6503 } else { 6504 return -1; 6505 } 6506 6507 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6508 ht40, vht, max_oper_chwidth, he, channels)) 6509 return -1; 6510 6511 params.role_go = 1; 6512 params.psk_set = ssid->psk_set; 6513 if (params.psk_set) 6514 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6515 if (ssid->passphrase) { 6516 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6517 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6518 "persistent group"); 6519 return -1; 6520 } 6521 os_strlcpy(params.passphrase, ssid->passphrase, 6522 sizeof(params.passphrase)); 6523 } 6524 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6525 params.ssid_len = ssid->ssid_len; 6526 params.persistent_group = 1; 6527 6528 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6529 if (wpa_s == NULL) 6530 return -1; 6531 6532 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6533 6534 wpa_s->p2p_first_connection_timeout = connection_timeout; 6535 wpas_start_wps_go(wpa_s, ¶ms, 0); 6536 6537 return 0; 6538 } 6539 6540 6541 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6542 struct wpabuf *proberesp_ies) 6543 { 6544 struct wpa_supplicant *wpa_s = ctx; 6545 if (wpa_s->ap_iface) { 6546 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6547 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6548 wpabuf_free(beacon_ies); 6549 wpabuf_free(proberesp_ies); 6550 return; 6551 } 6552 if (beacon_ies) { 6553 wpabuf_free(hapd->p2p_beacon_ie); 6554 hapd->p2p_beacon_ie = beacon_ies; 6555 } 6556 wpabuf_free(hapd->p2p_probe_resp_ie); 6557 hapd->p2p_probe_resp_ie = proberesp_ies; 6558 } else { 6559 wpabuf_free(beacon_ies); 6560 wpabuf_free(proberesp_ies); 6561 } 6562 wpa_supplicant_ap_update_beacon(wpa_s); 6563 } 6564 6565 6566 static void wpas_p2p_idle_update(void *ctx, int idle) 6567 { 6568 struct wpa_supplicant *wpa_s = ctx; 6569 if (!wpa_s->ap_iface) 6570 return; 6571 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6572 if (idle) { 6573 if (wpa_s->global->p2p_fail_on_wps_complete && 6574 wpa_s->p2p_in_provisioning) { 6575 wpas_p2p_grpform_fail_after_wps(wpa_s); 6576 return; 6577 } 6578 wpas_p2p_set_group_idle_timeout(wpa_s); 6579 } else 6580 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6581 } 6582 6583 6584 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6585 struct wpa_ssid *ssid) 6586 { 6587 struct p2p_group *group; 6588 struct p2p_group_config *cfg; 6589 6590 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6591 !ssid->p2p_group) 6592 return NULL; 6593 6594 cfg = os_zalloc(sizeof(*cfg)); 6595 if (cfg == NULL) 6596 return NULL; 6597 6598 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6599 cfg->persistent_group = 2; 6600 else if (ssid->p2p_persistent_group) 6601 cfg->persistent_group = 1; 6602 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6603 if (wpa_s->max_stations && 6604 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6605 cfg->max_clients = wpa_s->max_stations; 6606 else 6607 cfg->max_clients = wpa_s->conf->max_num_sta; 6608 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6609 cfg->ssid_len = ssid->ssid_len; 6610 cfg->freq = ssid->frequency; 6611 cfg->cb_ctx = wpa_s; 6612 cfg->ie_update = wpas_p2p_ie_update; 6613 cfg->idle_update = wpas_p2p_idle_update; 6614 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start) 6615 != 0; 6616 6617 group = p2p_group_init(wpa_s->global->p2p, cfg); 6618 if (group == NULL) 6619 os_free(cfg); 6620 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6621 p2p_group_notif_formation_done(group); 6622 wpa_s->p2p_group = group; 6623 return group; 6624 } 6625 6626 6627 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6628 int registrar) 6629 { 6630 struct wpa_ssid *ssid = wpa_s->current_ssid; 6631 6632 if (!wpa_s->p2p_in_provisioning) { 6633 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6634 "provisioning not in progress"); 6635 return; 6636 } 6637 6638 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6639 u8 go_dev_addr[ETH_ALEN]; 6640 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6641 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6642 ssid->ssid_len); 6643 /* Clear any stored provisioning info */ 6644 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6645 } 6646 6647 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6648 NULL); 6649 wpa_s->p2p_go_group_formation_completed = 1; 6650 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6651 /* 6652 * Use a separate timeout for initial data connection to 6653 * complete to allow the group to be removed automatically if 6654 * something goes wrong in this step before the P2P group idle 6655 * timeout mechanism is taken into use. 6656 */ 6657 wpa_dbg(wpa_s, MSG_DEBUG, 6658 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6659 P2P_MAX_INITIAL_CONN_WAIT); 6660 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6661 wpas_p2p_group_formation_timeout, 6662 wpa_s->p2pdev, NULL); 6663 /* Complete group formation on successful data connection. */ 6664 wpa_s->p2p_go_group_formation_completed = 0; 6665 } else if (ssid) { 6666 /* 6667 * Use a separate timeout for initial data connection to 6668 * complete to allow the group to be removed automatically if 6669 * the client does not complete data connection successfully. 6670 */ 6671 wpa_dbg(wpa_s, MSG_DEBUG, 6672 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6673 P2P_MAX_INITIAL_CONN_WAIT_GO); 6674 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6675 wpas_p2p_group_formation_timeout, 6676 wpa_s->p2pdev, NULL); 6677 /* 6678 * Complete group formation on first successful data connection 6679 */ 6680 wpa_s->p2p_go_group_formation_completed = 0; 6681 } 6682 if (wpa_s->global->p2p) 6683 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6684 wpas_group_formation_completed(wpa_s, 1, 0); 6685 } 6686 6687 6688 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6689 struct wps_event_fail *fail) 6690 { 6691 if (!wpa_s->p2p_in_provisioning) { 6692 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6693 "provisioning not in progress"); 6694 return; 6695 } 6696 6697 if (wpa_s->go_params) { 6698 p2p_clear_provisioning_info( 6699 wpa_s->global->p2p, 6700 wpa_s->go_params->peer_device_addr); 6701 } 6702 6703 wpas_notify_p2p_wps_failed(wpa_s, fail); 6704 6705 if (wpa_s == wpa_s->global->p2p_group_formation) { 6706 /* 6707 * Allow some time for the failed WPS negotiation exchange to 6708 * complete, but remove the group since group formation cannot 6709 * succeed after provisioning failure. 6710 */ 6711 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6712 wpa_s->global->p2p_fail_on_wps_complete = 1; 6713 eloop_deplete_timeout(0, 50000, 6714 wpas_p2p_group_formation_timeout, 6715 wpa_s->p2pdev, NULL); 6716 } 6717 } 6718 6719 6720 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6721 { 6722 if (!wpa_s->global->p2p_fail_on_wps_complete || 6723 !wpa_s->p2p_in_provisioning) 6724 return 0; 6725 6726 wpas_p2p_grpform_fail_after_wps(wpa_s); 6727 6728 return 1; 6729 } 6730 6731 6732 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6733 const char *config_method, 6734 enum wpas_p2p_prov_disc_use use, 6735 struct p2ps_provision *p2ps_prov) 6736 { 6737 u16 config_methods; 6738 6739 wpa_s->global->pending_p2ps_group = 0; 6740 wpa_s->global->pending_p2ps_group_freq = 0; 6741 wpa_s->p2p_fallback_to_go_neg = 0; 6742 wpa_s->pending_pd_use = NORMAL_PD; 6743 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6744 p2ps_prov->conncap = p2ps_group_capability( 6745 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6746 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6747 6748 wpa_printf(MSG_DEBUG, 6749 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6750 __func__, p2ps_prov->conncap, 6751 p2ps_prov->adv_id, p2ps_prov->conncap, 6752 p2ps_prov->status, p2ps_prov->info); 6753 6754 config_methods = 0; 6755 } else if (os_strncmp(config_method, "display", 7) == 0) 6756 config_methods = WPS_CONFIG_DISPLAY; 6757 else if (os_strncmp(config_method, "keypad", 6) == 0) 6758 config_methods = WPS_CONFIG_KEYPAD; 6759 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6760 os_strncmp(config_method, "pushbutton", 10) == 0) 6761 config_methods = WPS_CONFIG_PUSHBUTTON; 6762 else { 6763 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6764 os_free(p2ps_prov); 6765 return -1; 6766 } 6767 6768 if (use == WPAS_P2P_PD_AUTO) { 6769 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6770 wpa_s->pending_pd_config_methods = config_methods; 6771 wpa_s->p2p_auto_pd = 1; 6772 wpa_s->p2p_auto_join = 0; 6773 wpa_s->pending_pd_before_join = 0; 6774 wpa_s->auto_pd_scan_retry = 0; 6775 wpas_p2p_stop_find(wpa_s); 6776 wpa_s->p2p_join_scan_count = 0; 6777 os_get_reltime(&wpa_s->p2p_auto_started); 6778 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6779 wpa_s->p2p_auto_started.sec, 6780 wpa_s->p2p_auto_started.usec); 6781 wpas_p2p_join_scan(wpa_s, NULL); 6782 return 0; 6783 } 6784 6785 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6786 os_free(p2ps_prov); 6787 return -1; 6788 } 6789 6790 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6791 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6792 0, 1); 6793 } 6794 6795 6796 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6797 char *end) 6798 { 6799 return p2p_scan_result_text(ies, ies_len, buf, end); 6800 } 6801 6802 6803 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6804 { 6805 if (!offchannel_pending_action_tx(wpa_s)) 6806 return; 6807 6808 if (wpa_s->p2p_send_action_work) { 6809 wpas_p2p_free_send_action_work(wpa_s); 6810 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 6811 wpa_s, NULL); 6812 offchannel_send_action_done(wpa_s); 6813 } 6814 6815 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6816 "operation request"); 6817 offchannel_clear_pending_action_tx(wpa_s); 6818 } 6819 6820 6821 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6822 enum p2p_discovery_type type, 6823 unsigned int num_req_dev_types, const u8 *req_dev_types, 6824 const u8 *dev_id, unsigned int search_delay, 6825 u8 seek_cnt, const char **seek_string, int freq) 6826 { 6827 wpas_p2p_clear_pending_action_tx(wpa_s); 6828 wpa_s->p2p_long_listen = 0; 6829 6830 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6831 wpa_s->p2p_in_provisioning) { 6832 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s", 6833 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ? 6834 " (P2P disabled)" : "", 6835 wpa_s->p2p_in_provisioning ? 6836 " (p2p_in_provisioning)" : ""); 6837 return -1; 6838 } 6839 6840 wpa_supplicant_cancel_sched_scan(wpa_s); 6841 6842 return p2p_find(wpa_s->global->p2p, timeout, type, 6843 num_req_dev_types, req_dev_types, dev_id, 6844 search_delay, seek_cnt, seek_string, freq); 6845 } 6846 6847 6848 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6849 struct wpa_scan_results *scan_res) 6850 { 6851 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6852 6853 if (wpa_s->p2p_scan_work) { 6854 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6855 wpa_s->p2p_scan_work = NULL; 6856 radio_work_done(work); 6857 } 6858 6859 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6860 return; 6861 6862 /* 6863 * Indicate that results have been processed so that the P2P module can 6864 * continue pending tasks. 6865 */ 6866 p2p_scan_res_handled(wpa_s->global->p2p); 6867 } 6868 6869 6870 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6871 { 6872 wpas_p2p_clear_pending_action_tx(wpa_s); 6873 wpa_s->p2p_long_listen = 0; 6874 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6875 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6876 6877 if (wpa_s->global->p2p) 6878 p2p_stop_find(wpa_s->global->p2p); 6879 6880 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6881 wpa_printf(MSG_DEBUG, 6882 "P2P: Do not consider the scan results after stop_find"); 6883 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6884 } 6885 } 6886 6887 6888 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6889 { 6890 wpas_p2p_stop_find_oper(wpa_s); 6891 if (!wpa_s->global->pending_group_iface_for_p2ps) 6892 wpas_p2p_remove_pending_group_interface(wpa_s); 6893 } 6894 6895 6896 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6897 { 6898 struct wpa_supplicant *wpa_s = eloop_ctx; 6899 wpa_s->p2p_long_listen = 0; 6900 } 6901 6902 6903 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6904 { 6905 int res; 6906 6907 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6908 return -1; 6909 6910 if (wpa_s->p2p_lo_started) { 6911 wpa_printf(MSG_DEBUG, 6912 "P2P: Cannot start P2P listen, it is offloaded"); 6913 return -1; 6914 } 6915 6916 wpa_supplicant_cancel_sched_scan(wpa_s); 6917 wpas_p2p_clear_pending_action_tx(wpa_s); 6918 6919 if (timeout == 0) { 6920 /* 6921 * This is a request for unlimited Listen state. However, at 6922 * least for now, this is mapped to a Listen state for one 6923 * hour. 6924 */ 6925 timeout = 3600; 6926 } 6927 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6928 wpa_s->p2p_long_listen = 0; 6929 6930 /* 6931 * Stop previous find/listen operation to avoid trying to request a new 6932 * remain-on-channel operation while the driver is still running the 6933 * previous one. 6934 */ 6935 if (wpa_s->global->p2p) 6936 p2p_stop_find(wpa_s->global->p2p); 6937 6938 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6939 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6940 wpa_s->p2p_long_listen = timeout * 1000; 6941 eloop_register_timeout(timeout, 0, 6942 wpas_p2p_long_listen_timeout, 6943 wpa_s, NULL); 6944 } 6945 6946 return res; 6947 } 6948 6949 6950 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6951 u8 *buf, size_t len, int p2p_group) 6952 { 6953 struct wpabuf *p2p_ie; 6954 int ret; 6955 6956 if (wpa_s->global->p2p_disabled) 6957 return -1; 6958 /* 6959 * Advertize mandatory cross connection capability even on 6960 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6961 */ 6962 if (wpa_s->conf->p2p_disabled && p2p_group) 6963 return -1; 6964 if (wpa_s->global->p2p == NULL) 6965 return -1; 6966 if (bss == NULL) 6967 return -1; 6968 6969 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6970 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6971 p2p_group, p2p_ie); 6972 wpabuf_free(p2p_ie); 6973 6974 return ret; 6975 } 6976 6977 6978 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6979 const u8 *dst, const u8 *bssid, 6980 const u8 *ie, size_t ie_len, 6981 unsigned int rx_freq, int ssi_signal) 6982 { 6983 if (wpa_s->global->p2p_disabled) 6984 return 0; 6985 if (wpa_s->global->p2p == NULL) 6986 return 0; 6987 6988 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6989 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) { 6990 case P2P_PREQ_NOT_P2P: 6991 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6992 ssi_signal); 6993 /* fall through */ 6994 case P2P_PREQ_MALFORMED: 6995 case P2P_PREQ_NOT_LISTEN: 6996 case P2P_PREQ_NOT_PROCESSED: 6997 default: /* make gcc happy */ 6998 return 0; 6999 case P2P_PREQ_PROCESSED: 7000 return 1; 7001 } 7002 } 7003 7004 7005 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 7006 const u8 *sa, const u8 *bssid, 7007 u8 category, const u8 *data, size_t len, int freq) 7008 { 7009 if (wpa_s->global->p2p_disabled) 7010 return; 7011 if (wpa_s->global->p2p == NULL) 7012 return; 7013 7014 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 7015 freq); 7016 } 7017 7018 7019 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 7020 { 7021 unsigned int bands; 7022 7023 if (wpa_s->global->p2p_disabled) 7024 return; 7025 if (wpa_s->global->p2p == NULL) 7026 return; 7027 7028 bands = wpas_get_bands(wpa_s, NULL); 7029 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 7030 } 7031 7032 7033 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 7034 { 7035 p2p_group_deinit(wpa_s->p2p_group); 7036 wpa_s->p2p_group = NULL; 7037 7038 wpa_s->ap_configured_cb = NULL; 7039 wpa_s->ap_configured_cb_ctx = NULL; 7040 wpa_s->ap_configured_cb_data = NULL; 7041 wpa_s->connect_without_scan = NULL; 7042 } 7043 7044 7045 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 7046 { 7047 wpa_s->p2p_long_listen = 0; 7048 7049 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7050 return -1; 7051 7052 return p2p_reject(wpa_s->global->p2p, addr); 7053 } 7054 7055 7056 /* Invite to reinvoke a persistent group */ 7057 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 7058 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 7059 int vht_center_freq2, int ht40, int vht, int max_chwidth, 7060 int pref_freq, int he) 7061 { 7062 enum p2p_invite_role role; 7063 u8 *bssid = NULL; 7064 int force_freq = 0; 7065 int res; 7066 int no_pref_freq_given = pref_freq == 0; 7067 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 7068 7069 wpa_s->global->p2p_invite_group = NULL; 7070 if (peer_addr) 7071 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 7072 else 7073 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 7074 7075 wpa_s->p2p_persistent_go_freq = freq; 7076 wpa_s->p2p_go_ht40 = !!ht40; 7077 wpa_s->p2p_go_vht = !!vht; 7078 wpa_s->p2p_go_he = !!he; 7079 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 7080 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 7081 if (ssid->mode == WPAS_MODE_P2P_GO) { 7082 role = P2P_INVITE_ROLE_GO; 7083 if (peer_addr == NULL) { 7084 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 7085 "address in invitation command"); 7086 return -1; 7087 } 7088 if (wpas_p2p_create_iface(wpa_s)) { 7089 if (wpas_p2p_add_group_interface(wpa_s, 7090 WPA_IF_P2P_GO) < 0) { 7091 wpa_printf(MSG_ERROR, "P2P: Failed to " 7092 "allocate a new interface for the " 7093 "group"); 7094 return -1; 7095 } 7096 bssid = wpa_s->pending_interface_addr; 7097 } else if (wpa_s->p2p_mgmt) 7098 bssid = wpa_s->parent->own_addr; 7099 else 7100 bssid = wpa_s->own_addr; 7101 } else { 7102 role = P2P_INVITE_ROLE_CLIENT; 7103 peer_addr = ssid->bssid; 7104 } 7105 wpa_s->pending_invite_ssid_id = ssid->id; 7106 7107 size = P2P_MAX_PREF_CHANNELS; 7108 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 7109 role == P2P_INVITE_ROLE_GO, 7110 pref_freq_list, &size); 7111 if (res) 7112 return res; 7113 7114 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7115 return -1; 7116 7117 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 7118 7119 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 7120 no_pref_freq_given && pref_freq > 0 && 7121 wpa_s->num_multichan_concurrent > 1 && 7122 wpas_p2p_num_unused_channels(wpa_s) > 0) { 7123 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 7124 pref_freq); 7125 pref_freq = 0; 7126 } 7127 7128 /* 7129 * Stop any find/listen operations before invitation and possibly 7130 * connection establishment. 7131 */ 7132 wpas_p2p_stop_find_oper(wpa_s); 7133 7134 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 7135 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 7136 1, pref_freq, -1); 7137 } 7138 7139 7140 /* Invite to join an active group */ 7141 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 7142 const u8 *peer_addr, const u8 *go_dev_addr) 7143 { 7144 struct wpa_global *global = wpa_s->global; 7145 enum p2p_invite_role role; 7146 u8 *bssid = NULL; 7147 struct wpa_ssid *ssid; 7148 int persistent; 7149 int freq = 0, force_freq = 0, pref_freq = 0; 7150 int res; 7151 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 7152 7153 wpa_s->p2p_persistent_go_freq = 0; 7154 wpa_s->p2p_go_ht40 = 0; 7155 wpa_s->p2p_go_vht = 0; 7156 wpa_s->p2p_go_vht_center_freq2 = 0; 7157 wpa_s->p2p_go_max_oper_chwidth = 0; 7158 7159 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7160 if (os_strcmp(wpa_s->ifname, ifname) == 0) 7161 break; 7162 } 7163 if (wpa_s == NULL) { 7164 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 7165 return -1; 7166 } 7167 7168 ssid = wpa_s->current_ssid; 7169 if (ssid == NULL) { 7170 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 7171 "invitation"); 7172 return -1; 7173 } 7174 7175 wpa_s->global->p2p_invite_group = wpa_s; 7176 persistent = ssid->p2p_persistent_group && 7177 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr, 7178 ssid->ssid, ssid->ssid_len); 7179 7180 if (ssid->mode == WPAS_MODE_P2P_GO) { 7181 role = P2P_INVITE_ROLE_ACTIVE_GO; 7182 bssid = wpa_s->own_addr; 7183 if (go_dev_addr == NULL) 7184 go_dev_addr = wpa_s->global->p2p_dev_addr; 7185 freq = ssid->frequency; 7186 } else { 7187 role = P2P_INVITE_ROLE_CLIENT; 7188 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 7189 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 7190 "invite to current group"); 7191 return -1; 7192 } 7193 bssid = wpa_s->bssid; 7194 if (go_dev_addr == NULL && 7195 !is_zero_ether_addr(wpa_s->go_dev_addr)) 7196 go_dev_addr = wpa_s->go_dev_addr; 7197 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7198 (int) wpa_s->assoc_freq; 7199 } 7200 wpa_s->p2pdev->pending_invite_ssid_id = -1; 7201 7202 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7203 return -1; 7204 7205 size = P2P_MAX_PREF_CHANNELS; 7206 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 7207 role == P2P_INVITE_ROLE_ACTIVE_GO, 7208 pref_freq_list, &size); 7209 if (res) 7210 return res; 7211 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 7212 7213 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 7214 ssid->ssid, ssid->ssid_len, force_freq, 7215 go_dev_addr, persistent, pref_freq, -1); 7216 } 7217 7218 7219 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 7220 { 7221 struct wpa_ssid *ssid = wpa_s->current_ssid; 7222 u8 go_dev_addr[ETH_ALEN]; 7223 int persistent; 7224 int freq; 7225 u8 ip[3 * 4], *ip_ptr = NULL; 7226 char ip_addr[100]; 7227 7228 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 7229 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7230 wpa_s->p2pdev, NULL); 7231 } 7232 7233 if (!wpa_s->show_group_started || !ssid) 7234 return; 7235 7236 wpa_s->show_group_started = 0; 7237 if (!wpa_s->p2p_go_group_formation_completed && 7238 wpa_s->global->p2p_group_formation == wpa_s) { 7239 wpa_dbg(wpa_s, MSG_DEBUG, 7240 "P2P: Marking group formation completed on client on data connection"); 7241 wpa_s->p2p_go_group_formation_completed = 1; 7242 wpa_s->global->p2p_group_formation = NULL; 7243 wpa_s->p2p_in_provisioning = 0; 7244 wpa_s->p2p_in_invitation = 0; 7245 } 7246 7247 os_memset(go_dev_addr, 0, ETH_ALEN); 7248 if (ssid->bssid_set) 7249 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 7250 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 7251 ssid->ssid_len); 7252 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 7253 7254 if (wpa_s->global->p2p_group_formation == wpa_s) 7255 wpa_s->global->p2p_group_formation = NULL; 7256 7257 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7258 (int) wpa_s->assoc_freq; 7259 7260 ip_addr[0] = '\0'; 7261 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 7262 int res; 7263 7264 res = os_snprintf(ip_addr, sizeof(ip_addr), 7265 " ip_addr=%u.%u.%u.%u " 7266 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 7267 ip[0], ip[1], ip[2], ip[3], 7268 ip[4], ip[5], ip[6], ip[7], 7269 ip[8], ip[9], ip[10], ip[11]); 7270 if (os_snprintf_error(sizeof(ip_addr), res)) 7271 ip_addr[0] = '\0'; 7272 ip_ptr = ip; 7273 } 7274 7275 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 7276 ssid->passphrase == NULL && ssid->psk_set ? 7277 ssid->psk : NULL, 7278 ssid->passphrase, go_dev_addr, persistent, 7279 ip_addr); 7280 7281 if (persistent) 7282 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 7283 ssid, go_dev_addr); 7284 7285 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip_ptr); 7286 } 7287 7288 7289 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 7290 u32 interval1, u32 duration2, u32 interval2) 7291 { 7292 int ret; 7293 7294 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7295 return -1; 7296 7297 if (wpa_s->wpa_state < WPA_ASSOCIATED || 7298 wpa_s->current_ssid == NULL || 7299 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 7300 return -1; 7301 7302 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 7303 wpa_s->own_addr, wpa_s->assoc_freq, 7304 duration1, interval1, duration2, interval2); 7305 if (ret == 0) 7306 wpa_s->waiting_presence_resp = 1; 7307 7308 return ret; 7309 } 7310 7311 7312 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 7313 unsigned int interval) 7314 { 7315 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7316 return -1; 7317 7318 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 7319 } 7320 7321 7322 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 7323 { 7324 if (wpa_s->current_ssid == NULL) { 7325 /* 7326 * current_ssid can be cleared when P2P client interface gets 7327 * disconnected, so assume this interface was used as P2P 7328 * client. 7329 */ 7330 return 1; 7331 } 7332 return wpa_s->current_ssid->p2p_group && 7333 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 7334 } 7335 7336 7337 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 7338 { 7339 struct wpa_supplicant *wpa_s = eloop_ctx; 7340 7341 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 7342 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 7343 "disabled"); 7344 return; 7345 } 7346 7347 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7348 "group"); 7349 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7350 } 7351 7352 7353 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7354 { 7355 int timeout; 7356 7357 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7358 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7359 7360 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7361 return; 7362 7363 timeout = wpa_s->conf->p2p_group_idle; 7364 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7365 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7366 timeout = P2P_MAX_CLIENT_IDLE; 7367 7368 if (timeout == 0) 7369 return; 7370 7371 if (timeout < 0) { 7372 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7373 timeout = 0; /* special client mode no-timeout */ 7374 else 7375 return; 7376 } 7377 7378 if (wpa_s->p2p_in_provisioning) { 7379 /* 7380 * Use the normal group formation timeout during the 7381 * provisioning phase to avoid terminating this process too 7382 * early due to group idle timeout. 7383 */ 7384 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7385 "during provisioning"); 7386 return; 7387 } 7388 7389 if (wpa_s->show_group_started) { 7390 /* 7391 * Use the normal group formation timeout between the end of 7392 * the provisioning phase and completion of 4-way handshake to 7393 * avoid terminating this process too early due to group idle 7394 * timeout. 7395 */ 7396 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7397 "while waiting for initial 4-way handshake to " 7398 "complete"); 7399 return; 7400 } 7401 7402 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7403 timeout); 7404 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7405 wpa_s, NULL); 7406 } 7407 7408 7409 /* Returns 1 if the interface was removed */ 7410 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7411 u16 reason_code, const u8 *ie, size_t ie_len, 7412 int locally_generated) 7413 { 7414 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7415 return 0; 7416 7417 if (!locally_generated) 7418 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7419 ie_len); 7420 7421 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7422 wpa_s->current_ssid && 7423 wpa_s->current_ssid->p2p_group && 7424 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7425 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7426 "session is ending"); 7427 if (wpas_p2p_group_delete(wpa_s, 7428 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7429 > 0) 7430 return 1; 7431 } 7432 7433 return 0; 7434 } 7435 7436 7437 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7438 u16 reason_code, const u8 *ie, size_t ie_len, 7439 int locally_generated) 7440 { 7441 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7442 return; 7443 7444 if (!locally_generated) 7445 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7446 ie_len); 7447 } 7448 7449 7450 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7451 { 7452 struct p2p_data *p2p = wpa_s->global->p2p; 7453 7454 if (p2p == NULL) 7455 return; 7456 7457 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7458 return; 7459 7460 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7461 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7462 7463 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7464 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7465 7466 if (wpa_s->wps && 7467 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7468 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7469 7470 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7471 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7472 7473 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7474 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7475 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7476 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7477 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7478 } 7479 7480 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7481 p2p_set_sec_dev_types(p2p, 7482 (void *) wpa_s->conf->sec_device_type, 7483 wpa_s->conf->num_sec_device_types); 7484 7485 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7486 int i; 7487 p2p_remove_wps_vendor_extensions(p2p); 7488 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7489 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7490 continue; 7491 p2p_add_wps_vendor_extension( 7492 p2p, wpa_s->conf->wps_vendor_ext[i]); 7493 } 7494 } 7495 7496 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7497 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7498 char country[3]; 7499 country[0] = wpa_s->conf->country[0]; 7500 country[1] = wpa_s->conf->country[1]; 7501 country[2] = 0x04; 7502 p2p_set_country(p2p, country); 7503 } 7504 7505 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7506 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7507 wpa_s->conf->p2p_ssid_postfix ? 7508 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7509 0); 7510 } 7511 7512 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7513 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7514 7515 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7516 u8 reg_class, channel; 7517 int ret; 7518 unsigned int r; 7519 u8 channel_forced; 7520 7521 if (wpa_s->conf->p2p_listen_reg_class && 7522 wpa_s->conf->p2p_listen_channel) { 7523 reg_class = wpa_s->conf->p2p_listen_reg_class; 7524 channel = wpa_s->conf->p2p_listen_channel; 7525 channel_forced = 1; 7526 } else { 7527 reg_class = 81; 7528 /* 7529 * Pick one of the social channels randomly as the 7530 * listen channel. 7531 */ 7532 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7533 channel = 1; 7534 else 7535 channel = 1 + (r % 3) * 5; 7536 channel_forced = 0; 7537 } 7538 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7539 channel_forced); 7540 if (ret) 7541 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7542 "failed: %d", ret); 7543 } 7544 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7545 u8 op_reg_class, op_channel, cfg_op_channel; 7546 int ret = 0; 7547 unsigned int r; 7548 if (wpa_s->conf->p2p_oper_reg_class && 7549 wpa_s->conf->p2p_oper_channel) { 7550 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7551 op_channel = wpa_s->conf->p2p_oper_channel; 7552 cfg_op_channel = 1; 7553 } else { 7554 op_reg_class = 81; 7555 /* 7556 * Use random operation channel from (1, 6, 11) 7557 *if no other preference is indicated. 7558 */ 7559 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7560 op_channel = 1; 7561 else 7562 op_channel = 1 + (r % 3) * 5; 7563 cfg_op_channel = 0; 7564 } 7565 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7566 cfg_op_channel); 7567 if (ret) 7568 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7569 "failed: %d", ret); 7570 } 7571 7572 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7573 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7574 wpa_s->conf->p2p_pref_chan) < 0) { 7575 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7576 "update failed"); 7577 } 7578 7579 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7580 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7581 "update failed"); 7582 } 7583 } 7584 7585 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7586 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7587 } 7588 7589 7590 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7591 int duration) 7592 { 7593 if (!wpa_s->ap_iface) 7594 return -1; 7595 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7596 duration); 7597 } 7598 7599 7600 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7601 { 7602 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7603 return -1; 7604 7605 wpa_s->global->cross_connection = enabled; 7606 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7607 7608 if (!enabled) { 7609 struct wpa_supplicant *iface; 7610 7611 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7612 { 7613 if (iface->cross_connect_enabled == 0) 7614 continue; 7615 7616 iface->cross_connect_enabled = 0; 7617 iface->cross_connect_in_use = 0; 7618 wpa_msg_global(iface->p2pdev, MSG_INFO, 7619 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7620 iface->ifname, 7621 iface->cross_connect_uplink); 7622 } 7623 } 7624 7625 return 0; 7626 } 7627 7628 7629 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7630 { 7631 struct wpa_supplicant *iface; 7632 7633 if (!uplink->global->cross_connection) 7634 return; 7635 7636 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7637 if (!iface->cross_connect_enabled) 7638 continue; 7639 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7640 0) 7641 continue; 7642 if (iface->ap_iface == NULL) 7643 continue; 7644 if (iface->cross_connect_in_use) 7645 continue; 7646 7647 iface->cross_connect_in_use = 1; 7648 wpa_msg_global(iface->p2pdev, MSG_INFO, 7649 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7650 iface->ifname, iface->cross_connect_uplink); 7651 } 7652 } 7653 7654 7655 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7656 { 7657 struct wpa_supplicant *iface; 7658 7659 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7660 if (!iface->cross_connect_enabled) 7661 continue; 7662 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7663 0) 7664 continue; 7665 if (!iface->cross_connect_in_use) 7666 continue; 7667 7668 wpa_msg_global(iface->p2pdev, MSG_INFO, 7669 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7670 iface->ifname, iface->cross_connect_uplink); 7671 iface->cross_connect_in_use = 0; 7672 } 7673 } 7674 7675 7676 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7677 { 7678 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7679 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7680 wpa_s->cross_connect_disallowed) 7681 wpas_p2p_disable_cross_connect(wpa_s); 7682 else 7683 wpas_p2p_enable_cross_connect(wpa_s); 7684 if (!wpa_s->ap_iface && 7685 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7686 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7687 } 7688 7689 7690 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7691 { 7692 wpas_p2p_disable_cross_connect(wpa_s); 7693 if (!wpa_s->ap_iface && 7694 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7695 wpa_s, NULL)) 7696 wpas_p2p_set_group_idle_timeout(wpa_s); 7697 } 7698 7699 7700 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7701 { 7702 struct wpa_supplicant *iface; 7703 7704 if (!wpa_s->global->cross_connection) 7705 return; 7706 7707 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7708 if (iface == wpa_s) 7709 continue; 7710 if (iface->drv_flags & 7711 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7712 continue; 7713 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7714 iface != wpa_s->parent) 7715 continue; 7716 7717 wpa_s->cross_connect_enabled = 1; 7718 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7719 sizeof(wpa_s->cross_connect_uplink)); 7720 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7721 "%s to %s whenever uplink is available", 7722 wpa_s->ifname, wpa_s->cross_connect_uplink); 7723 7724 if (iface->ap_iface || iface->current_ssid == NULL || 7725 iface->current_ssid->mode != WPAS_MODE_INFRA || 7726 iface->cross_connect_disallowed || 7727 iface->wpa_state != WPA_COMPLETED) 7728 break; 7729 7730 wpa_s->cross_connect_in_use = 1; 7731 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 7732 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7733 wpa_s->ifname, wpa_s->cross_connect_uplink); 7734 break; 7735 } 7736 } 7737 7738 7739 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7740 { 7741 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7742 !wpa_s->p2p_in_provisioning) 7743 return 0; /* not P2P client operation */ 7744 7745 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7746 "session overlap"); 7747 if (wpa_s != wpa_s->p2pdev) 7748 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP); 7749 wpas_p2p_group_formation_failed(wpa_s, 0); 7750 return 1; 7751 } 7752 7753 7754 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7755 { 7756 struct wpa_supplicant *wpa_s = eloop_ctx; 7757 wpas_p2p_notif_pbc_overlap(wpa_s); 7758 } 7759 7760 7761 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7762 enum wpas_p2p_channel_update_trig trig) 7763 { 7764 struct p2p_channels chan, cli_chan; 7765 struct wpa_used_freq_data *freqs = NULL; 7766 unsigned int num = wpa_s->num_multichan_concurrent; 7767 7768 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7769 return; 7770 7771 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7772 if (!freqs) 7773 return; 7774 7775 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7776 7777 os_memset(&chan, 0, sizeof(chan)); 7778 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7779 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7780 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7781 "channel list"); 7782 return; 7783 } 7784 7785 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7786 7787 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7788 7789 /* 7790 * The used frequencies map changed, so it is possible that a GO is 7791 * using a channel that is no longer valid for P2P use. It is also 7792 * possible that due to policy consideration, it would be preferable to 7793 * move it to a frequency already used by other station interfaces. 7794 */ 7795 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7796 7797 os_free(freqs); 7798 } 7799 7800 7801 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7802 struct wpa_scan_results *scan_res) 7803 { 7804 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7805 } 7806 7807 7808 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7809 { 7810 struct wpa_global *global = wpa_s->global; 7811 int found = 0; 7812 const u8 *peer; 7813 7814 if (global->p2p == NULL) 7815 return -1; 7816 7817 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7818 7819 if (wpa_s->pending_interface_name[0] && 7820 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7821 found = 1; 7822 7823 peer = p2p_get_go_neg_peer(global->p2p); 7824 if (peer) { 7825 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7826 MACSTR, MAC2STR(peer)); 7827 p2p_unauthorize(global->p2p, peer); 7828 found = 1; 7829 } 7830 7831 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7832 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7833 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7834 found = 1; 7835 } 7836 7837 if (wpa_s->pending_pd_before_join) { 7838 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7839 wpa_s->pending_pd_before_join = 0; 7840 found = 1; 7841 } 7842 7843 wpas_p2p_stop_find(wpa_s); 7844 7845 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7846 if (wpa_s == global->p2p_group_formation && 7847 (wpa_s->p2p_in_provisioning || 7848 wpa_s->parent->pending_interface_type == 7849 WPA_IF_P2P_CLIENT)) { 7850 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7851 "formation found - cancelling", 7852 wpa_s->ifname); 7853 found = 1; 7854 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7855 wpa_s->p2pdev, NULL); 7856 if (wpa_s->p2p_in_provisioning) { 7857 wpas_group_formation_completed(wpa_s, 0, 0); 7858 break; 7859 } 7860 wpas_p2p_group_delete(wpa_s, 7861 P2P_GROUP_REMOVAL_REQUESTED); 7862 break; 7863 } else if (wpa_s->p2p_in_invitation) { 7864 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7865 wpa_s->ifname); 7866 found = 1; 7867 wpas_p2p_group_formation_failed(wpa_s, 0); 7868 break; 7869 } 7870 } 7871 7872 if (!found) { 7873 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7874 return -1; 7875 } 7876 7877 return 0; 7878 } 7879 7880 7881 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7882 { 7883 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7884 return; 7885 7886 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7887 "being available anymore"); 7888 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7889 } 7890 7891 7892 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7893 int freq_24, int freq_5, int freq_overall) 7894 { 7895 struct p2p_data *p2p = wpa_s->global->p2p; 7896 if (p2p == NULL) 7897 return; 7898 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7899 } 7900 7901 7902 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7903 { 7904 u8 peer[ETH_ALEN]; 7905 struct p2p_data *p2p = wpa_s->global->p2p; 7906 7907 if (p2p == NULL) 7908 return -1; 7909 7910 if (hwaddr_aton(addr, peer)) 7911 return -1; 7912 7913 return p2p_unauthorize(p2p, peer); 7914 } 7915 7916 7917 /** 7918 * wpas_p2p_disconnect - Disconnect from a P2P Group 7919 * @wpa_s: Pointer to wpa_supplicant data 7920 * Returns: 0 on success, -1 on failure 7921 * 7922 * This can be used to disconnect from a group in which the local end is a P2P 7923 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7924 * virtual network interface was created for this group, that interface will be 7925 * removed. Otherwise, only the configured P2P group network will be removed 7926 * from the interface. 7927 */ 7928 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7929 { 7930 7931 if (wpa_s == NULL) 7932 return -1; 7933 7934 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7935 -1 : 0; 7936 } 7937 7938 7939 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7940 { 7941 int ret; 7942 7943 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7944 return 0; 7945 7946 ret = p2p_in_progress(wpa_s->global->p2p); 7947 if (ret == 0) { 7948 /* 7949 * Check whether there is an ongoing WPS provisioning step (or 7950 * other parts of group formation) on another interface since 7951 * p2p_in_progress() does not report this to avoid issues for 7952 * scans during such provisioning step. 7953 */ 7954 if (wpa_s->global->p2p_group_formation && 7955 wpa_s->global->p2p_group_formation != wpa_s) { 7956 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7957 "in group formation", 7958 wpa_s->global->p2p_group_formation->ifname); 7959 ret = 1; 7960 } 7961 } 7962 7963 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7964 struct os_reltime now; 7965 os_get_reltime(&now); 7966 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7967 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7968 /* Wait for the first client has expired */ 7969 wpa_s->global->p2p_go_wait_client.sec = 0; 7970 } else { 7971 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7972 ret = 1; 7973 } 7974 } 7975 7976 return ret; 7977 } 7978 7979 7980 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7981 struct wpa_ssid *ssid) 7982 { 7983 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7984 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7985 wpa_s->p2pdev, NULL) > 0) { 7986 /** 7987 * Remove the network by scheduling the group formation 7988 * timeout to happen immediately. The teardown code 7989 * needs to be scheduled to run asynch later so that we 7990 * don't delete data from under ourselves unexpectedly. 7991 * Calling wpas_p2p_group_formation_timeout directly 7992 * causes a series of crashes in WPS failure scenarios. 7993 */ 7994 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7995 "P2P group network getting removed"); 7996 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7997 wpa_s->p2pdev, NULL); 7998 } 7999 } 8000 8001 8002 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 8003 const u8 *addr, const u8 *ssid, 8004 size_t ssid_len) 8005 { 8006 struct wpa_ssid *s; 8007 size_t i; 8008 8009 for (s = wpa_s->conf->ssid; s; s = s->next) { 8010 if (s->disabled != 2) 8011 continue; 8012 if (ssid && 8013 (ssid_len != s->ssid_len || 8014 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 8015 continue; 8016 if (addr == NULL) { 8017 if (s->mode == WPAS_MODE_P2P_GO) 8018 return s; 8019 continue; 8020 } 8021 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 8022 return s; /* peer is GO in the persistent group */ 8023 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 8024 continue; 8025 for (i = 0; i < s->num_p2p_clients; i++) { 8026 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 8027 addr, ETH_ALEN) == 0) 8028 return s; /* peer is P2P client in persistent 8029 * group */ 8030 } 8031 } 8032 8033 return NULL; 8034 } 8035 8036 8037 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 8038 const u8 *addr) 8039 { 8040 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 8041 wpa_s->p2pdev, NULL) > 0) { 8042 /* 8043 * This can happen if WPS provisioning step is not terminated 8044 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 8045 * peer was able to connect, there is no need to time out group 8046 * formation after this, though. In addition, this is used with 8047 * the initial connection wait on the GO as a separate formation 8048 * timeout and as such, expected to be hit after the initial WPS 8049 * provisioning step. 8050 */ 8051 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 8052 8053 if (!wpa_s->p2p_go_group_formation_completed && 8054 !wpa_s->group_formation_reported) { 8055 /* 8056 * GO has not yet notified group formation success since 8057 * the WPS step was not completed cleanly. Do that 8058 * notification now since the P2P Client was able to 8059 * connect and as such, must have received the 8060 * credential from the WPS step. 8061 */ 8062 if (wpa_s->global->p2p) 8063 p2p_wps_success_cb(wpa_s->global->p2p, addr); 8064 wpas_group_formation_completed(wpa_s, 1, 0); 8065 } 8066 } 8067 if (!wpa_s->p2p_go_group_formation_completed) { 8068 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 8069 wpa_s->p2p_go_group_formation_completed = 1; 8070 wpa_s->global->p2p_group_formation = NULL; 8071 wpa_s->p2p_in_provisioning = 0; 8072 wpa_s->p2p_in_invitation = 0; 8073 } 8074 wpa_s->global->p2p_go_wait_client.sec = 0; 8075 if (addr == NULL) 8076 return; 8077 wpas_p2p_add_persistent_group_client(wpa_s, addr); 8078 } 8079 8080 8081 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 8082 int group_added) 8083 { 8084 struct wpa_supplicant *group = wpa_s; 8085 int ret = 0; 8086 8087 if (wpa_s->global->p2p_group_formation) 8088 group = wpa_s->global->p2p_group_formation; 8089 wpa_s = wpa_s->global->p2p_init_wpa_s; 8090 offchannel_send_action_done(wpa_s); 8091 if (group_added) 8092 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 8093 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 8094 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 8095 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 8096 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 8097 wpa_s->p2p_go_vht_center_freq2, 8098 wpa_s->p2p_persistent_id, 8099 wpa_s->p2p_pd_before_go_neg, 8100 wpa_s->p2p_go_ht40, 8101 wpa_s->p2p_go_vht, 8102 wpa_s->p2p_go_max_oper_chwidth, 8103 wpa_s->p2p_go_he, NULL, 0); 8104 return ret; 8105 } 8106 8107 8108 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 8109 { 8110 int res; 8111 8112 if (!wpa_s->p2p_fallback_to_go_neg || 8113 wpa_s->p2p_in_provisioning <= 5) 8114 return 0; 8115 8116 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 8117 return 0; /* peer operating as a GO */ 8118 8119 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 8120 "fallback to GO Negotiation"); 8121 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 8122 "reason=GO-not-found"); 8123 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 8124 8125 return res == 1 ? 2 : 1; 8126 } 8127 8128 8129 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 8130 { 8131 struct wpa_supplicant *ifs; 8132 8133 if (wpa_s->wpa_state > WPA_SCANNING) { 8134 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 8135 "concurrent operation", 8136 wpa_s->conf->p2p_search_delay); 8137 return wpa_s->conf->p2p_search_delay; 8138 } 8139 8140 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 8141 radio_list) { 8142 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 8143 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 8144 "delay due to concurrent operation on " 8145 "interface %s", 8146 wpa_s->conf->p2p_search_delay, 8147 ifs->ifname); 8148 return wpa_s->conf->p2p_search_delay; 8149 } 8150 } 8151 8152 return 0; 8153 } 8154 8155 8156 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 8157 struct wpa_ssid *s, const u8 *addr, 8158 int iface_addr) 8159 { 8160 struct psk_list_entry *psk, *tmp; 8161 int changed = 0; 8162 8163 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 8164 list) { 8165 if ((iface_addr && !psk->p2p && 8166 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 8167 (!iface_addr && psk->p2p && 8168 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 8169 wpa_dbg(wpa_s, MSG_DEBUG, 8170 "P2P: Remove persistent group PSK list entry for " 8171 MACSTR " p2p=%u", 8172 MAC2STR(psk->addr), psk->p2p); 8173 dl_list_del(&psk->list); 8174 os_free(psk); 8175 changed++; 8176 } 8177 } 8178 8179 return changed; 8180 } 8181 8182 8183 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 8184 const u8 *p2p_dev_addr, 8185 const u8 *psk, size_t psk_len) 8186 { 8187 struct wpa_ssid *ssid = wpa_s->current_ssid; 8188 struct wpa_ssid *persistent; 8189 struct psk_list_entry *p, *last; 8190 8191 if (psk_len != sizeof(p->psk)) 8192 return; 8193 8194 if (p2p_dev_addr) { 8195 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 8196 " p2p_dev_addr=" MACSTR, 8197 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 8198 if (is_zero_ether_addr(p2p_dev_addr)) 8199 p2p_dev_addr = NULL; 8200 } else { 8201 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 8202 MAC2STR(mac_addr)); 8203 } 8204 8205 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 8206 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 8207 /* To be added to persistent group once created */ 8208 if (wpa_s->global->add_psk == NULL) { 8209 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 8210 if (wpa_s->global->add_psk == NULL) 8211 return; 8212 } 8213 p = wpa_s->global->add_psk; 8214 if (p2p_dev_addr) { 8215 p->p2p = 1; 8216 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8217 } else { 8218 p->p2p = 0; 8219 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8220 } 8221 os_memcpy(p->psk, psk, psk_len); 8222 return; 8223 } 8224 8225 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 8226 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 8227 return; 8228 } 8229 8230 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 8231 ssid->ssid_len); 8232 if (!persistent) { 8233 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 8234 return; 8235 } 8236 8237 p = os_zalloc(sizeof(*p)); 8238 if (p == NULL) 8239 return; 8240 if (p2p_dev_addr) { 8241 p->p2p = 1; 8242 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8243 } else { 8244 p->p2p = 0; 8245 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8246 } 8247 os_memcpy(p->psk, psk, psk_len); 8248 8249 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 8250 (last = dl_list_last(&persistent->psk_list, 8251 struct psk_list_entry, list))) { 8252 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 8253 MACSTR " (p2p=%u) to make room for a new one", 8254 MAC2STR(last->addr), last->p2p); 8255 dl_list_del(&last->list); 8256 os_free(last); 8257 } 8258 8259 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent, 8260 p2p_dev_addr ? p2p_dev_addr : mac_addr, 8261 p2p_dev_addr == NULL); 8262 if (p2p_dev_addr) { 8263 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 8264 MACSTR, MAC2STR(p2p_dev_addr)); 8265 } else { 8266 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 8267 MAC2STR(mac_addr)); 8268 } 8269 dl_list_add(&persistent->psk_list, &p->list); 8270 8271 if (wpa_s->p2pdev->conf->update_config && 8272 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 8273 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 8274 } 8275 8276 8277 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 8278 struct wpa_ssid *s, const u8 *addr, 8279 int iface_addr) 8280 { 8281 int res; 8282 8283 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 8284 if (res > 0 && wpa_s->conf->update_config && 8285 wpa_config_write(wpa_s->confname, wpa_s->conf)) 8286 wpa_dbg(wpa_s, MSG_DEBUG, 8287 "P2P: Failed to update configuration"); 8288 } 8289 8290 8291 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 8292 const u8 *peer, int iface_addr) 8293 { 8294 struct hostapd_data *hapd; 8295 struct hostapd_wpa_psk *psk, *prev, *rem; 8296 struct sta_info *sta; 8297 8298 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 8299 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 8300 return; 8301 8302 /* Remove per-station PSK entry */ 8303 hapd = wpa_s->ap_iface->bss[0]; 8304 prev = NULL; 8305 psk = hapd->conf->ssid.wpa_psk; 8306 while (psk) { 8307 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 8308 (!iface_addr && 8309 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 8310 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 8311 MACSTR " iface_addr=%d", 8312 MAC2STR(peer), iface_addr); 8313 if (prev) 8314 prev->next = psk->next; 8315 else 8316 hapd->conf->ssid.wpa_psk = psk->next; 8317 rem = psk; 8318 psk = psk->next; 8319 os_free(rem); 8320 } else { 8321 prev = psk; 8322 psk = psk->next; 8323 } 8324 } 8325 8326 /* Disconnect from group */ 8327 if (iface_addr) 8328 sta = ap_get_sta(hapd, peer); 8329 else 8330 sta = ap_get_sta_p2p(hapd, peer); 8331 if (sta) { 8332 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 8333 " (iface_addr=%d) from group", 8334 MAC2STR(peer), iface_addr); 8335 hostapd_drv_sta_deauth(hapd, sta->addr, 8336 WLAN_REASON_DEAUTH_LEAVING); 8337 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 8338 } 8339 } 8340 8341 8342 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 8343 int iface_addr) 8344 { 8345 struct wpa_ssid *s; 8346 struct wpa_supplicant *w; 8347 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8348 8349 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8350 8351 /* Remove from any persistent group */ 8352 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8353 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8354 continue; 8355 if (!iface_addr) 8356 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8357 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8358 } 8359 8360 /* Remove from any operating group */ 8361 for (w = wpa_s->global->ifaces; w; w = w->next) 8362 wpas_p2p_remove_client_go(w, peer, iface_addr); 8363 } 8364 8365 8366 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8367 { 8368 struct wpa_supplicant *wpa_s = eloop_ctx; 8369 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8370 } 8371 8372 8373 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8374 { 8375 struct wpa_supplicant *wpa_s = eloop_ctx; 8376 8377 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8378 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8379 } 8380 8381 8382 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8383 struct wpa_ssid *ssid) 8384 { 8385 struct wpa_supplicant *iface; 8386 8387 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8388 if (!iface->current_ssid || 8389 iface->current_ssid->frequency == freq || 8390 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8391 !iface->current_ssid->p2p_group)) 8392 continue; 8393 8394 /* Remove the connection with least priority */ 8395 if (!wpas_is_p2p_prioritized(iface)) { 8396 /* STA connection has priority over existing 8397 * P2P connection, so remove the interface. */ 8398 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8399 eloop_register_timeout(0, 0, 8400 wpas_p2p_group_freq_conflict, 8401 iface, NULL); 8402 /* If connection in progress is P2P connection, do not 8403 * proceed for the connection. */ 8404 if (wpa_s == iface) 8405 return -1; 8406 else 8407 return 0; 8408 } else { 8409 /* P2P connection has priority, disable the STA network 8410 */ 8411 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8412 ssid); 8413 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8414 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8415 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8416 ETH_ALEN); 8417 /* If P2P connection is in progress, continue 8418 * connecting...*/ 8419 if (wpa_s == iface) 8420 return 0; 8421 else 8422 return -1; 8423 } 8424 } 8425 8426 return 0; 8427 } 8428 8429 8430 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8431 { 8432 struct wpa_ssid *ssid = wpa_s->current_ssid; 8433 8434 if (ssid == NULL || !ssid->p2p_group) 8435 return 0; 8436 8437 if (wpa_s->p2p_last_4way_hs_fail && 8438 wpa_s->p2p_last_4way_hs_fail == ssid) { 8439 u8 go_dev_addr[ETH_ALEN]; 8440 struct wpa_ssid *persistent; 8441 8442 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8443 ssid->ssid, 8444 ssid->ssid_len) <= 0) { 8445 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8446 goto disconnect; 8447 } 8448 8449 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8450 MACSTR, MAC2STR(go_dev_addr)); 8451 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr, 8452 ssid->ssid, 8453 ssid->ssid_len); 8454 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8455 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8456 goto disconnect; 8457 } 8458 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 8459 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8460 persistent->id); 8461 disconnect: 8462 wpa_s->p2p_last_4way_hs_fail = NULL; 8463 /* 8464 * Remove the group from a timeout to avoid issues with caller 8465 * continuing to use the interface if this is on a P2P group 8466 * interface. 8467 */ 8468 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8469 wpa_s, NULL); 8470 return 1; 8471 } 8472 8473 wpa_s->p2p_last_4way_hs_fail = ssid; 8474 return 0; 8475 } 8476 8477 8478 #ifdef CONFIG_WPS_NFC 8479 8480 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8481 struct wpabuf *p2p) 8482 { 8483 struct wpabuf *ret; 8484 size_t wsc_len; 8485 8486 if (p2p == NULL) { 8487 wpabuf_free(wsc); 8488 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8489 return NULL; 8490 } 8491 8492 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8493 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8494 if (ret == NULL) { 8495 wpabuf_free(wsc); 8496 wpabuf_free(p2p); 8497 return NULL; 8498 } 8499 8500 wpabuf_put_be16(ret, wsc_len); 8501 if (wsc) 8502 wpabuf_put_buf(ret, wsc); 8503 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8504 wpabuf_put_buf(ret, p2p); 8505 8506 wpabuf_free(wsc); 8507 wpabuf_free(p2p); 8508 wpa_hexdump_buf(MSG_DEBUG, 8509 "P2P: Generated NFC connection handover message", ret); 8510 8511 if (ndef && ret) { 8512 struct wpabuf *tmp; 8513 tmp = ndef_build_p2p(ret); 8514 wpabuf_free(ret); 8515 if (tmp == NULL) { 8516 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8517 return NULL; 8518 } 8519 ret = tmp; 8520 } 8521 8522 return ret; 8523 } 8524 8525 8526 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8527 struct wpa_ssid **ssid, u8 *go_dev_addr) 8528 { 8529 struct wpa_supplicant *iface; 8530 8531 if (go_dev_addr) 8532 os_memset(go_dev_addr, 0, ETH_ALEN); 8533 if (ssid) 8534 *ssid = NULL; 8535 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8536 if (iface->wpa_state < WPA_ASSOCIATING || 8537 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8538 !iface->current_ssid->p2p_group || 8539 iface->current_ssid->mode != WPAS_MODE_INFRA) 8540 continue; 8541 if (ssid) 8542 *ssid = iface->current_ssid; 8543 if (go_dev_addr) 8544 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8545 return iface->assoc_freq; 8546 } 8547 return 0; 8548 } 8549 8550 8551 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8552 int ndef) 8553 { 8554 struct wpabuf *wsc, *p2p; 8555 struct wpa_ssid *ssid; 8556 u8 go_dev_addr[ETH_ALEN]; 8557 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8558 8559 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8560 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8561 return NULL; 8562 } 8563 8564 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8565 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8566 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8567 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8568 return NULL; 8569 } 8570 8571 if (cli_freq == 0) { 8572 wsc = wps_build_nfc_handover_req_p2p( 8573 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8574 } else 8575 wsc = NULL; 8576 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8577 go_dev_addr, ssid ? ssid->ssid : NULL, 8578 ssid ? ssid->ssid_len : 0); 8579 8580 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8581 } 8582 8583 8584 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8585 int ndef, int tag) 8586 { 8587 struct wpabuf *wsc, *p2p; 8588 struct wpa_ssid *ssid; 8589 u8 go_dev_addr[ETH_ALEN]; 8590 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8591 8592 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8593 return NULL; 8594 8595 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8596 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8597 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8598 return NULL; 8599 8600 if (cli_freq == 0) { 8601 wsc = wps_build_nfc_handover_sel_p2p( 8602 wpa_s->parent->wps, 8603 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8604 DEV_PW_NFC_CONNECTION_HANDOVER, 8605 wpa_s->conf->wps_nfc_dh_pubkey, 8606 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8607 } else 8608 wsc = NULL; 8609 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8610 go_dev_addr, ssid ? ssid->ssid : NULL, 8611 ssid ? ssid->ssid_len : 0); 8612 8613 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8614 } 8615 8616 8617 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8618 struct p2p_nfc_params *params) 8619 { 8620 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8621 "connection handover (freq=%d)", 8622 params->go_freq); 8623 8624 if (params->go_freq && params->go_ssid_len) { 8625 wpa_s->p2p_wps_method = WPS_NFC; 8626 wpa_s->pending_join_wps_method = WPS_NFC; 8627 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8628 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8629 ETH_ALEN); 8630 return wpas_p2p_join_start(wpa_s, params->go_freq, 8631 params->go_ssid, 8632 params->go_ssid_len); 8633 } 8634 8635 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8636 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8637 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8638 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8639 wpa_s->p2p_go_he, 8640 params->go_ssid_len ? params->go_ssid : NULL, 8641 params->go_ssid_len); 8642 } 8643 8644 8645 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8646 struct p2p_nfc_params *params, int tag) 8647 { 8648 int res, persistent; 8649 struct wpa_ssid *ssid; 8650 8651 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8652 "connection handover"); 8653 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8654 ssid = wpa_s->current_ssid; 8655 if (ssid == NULL) 8656 continue; 8657 if (ssid->mode != WPAS_MODE_P2P_GO) 8658 continue; 8659 if (wpa_s->ap_iface == NULL) 8660 continue; 8661 break; 8662 } 8663 if (wpa_s == NULL) { 8664 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8665 return -1; 8666 } 8667 8668 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 8669 DEV_PW_NFC_CONNECTION_HANDOVER && 8670 !wpa_s->p2pdev->p2p_oob_dev_pw) { 8671 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8672 return -1; 8673 } 8674 res = wpas_ap_wps_add_nfc_pw( 8675 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 8676 wpa_s->p2pdev->p2p_oob_dev_pw, 8677 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 8678 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 8679 if (res) 8680 return res; 8681 8682 if (!tag) { 8683 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8684 return 0; 8685 } 8686 8687 if (!params->peer || 8688 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8689 return 0; 8690 8691 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8692 " to join", MAC2STR(params->peer->p2p_device_addr)); 8693 8694 wpa_s->global->p2p_invite_group = wpa_s; 8695 persistent = ssid->p2p_persistent_group && 8696 wpas_p2p_get_persistent(wpa_s->p2pdev, 8697 params->peer->p2p_device_addr, 8698 ssid->ssid, ssid->ssid_len); 8699 wpa_s->p2pdev->pending_invite_ssid_id = -1; 8700 8701 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8702 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8703 ssid->ssid, ssid->ssid_len, ssid->frequency, 8704 wpa_s->global->p2p_dev_addr, persistent, 0, 8705 wpa_s->p2pdev->p2p_oob_dev_pw_id); 8706 } 8707 8708 8709 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8710 struct p2p_nfc_params *params, 8711 int forced_freq) 8712 { 8713 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8714 "connection handover"); 8715 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8716 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8717 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8718 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8719 wpa_s->p2p_go_he, NULL, 0); 8720 } 8721 8722 8723 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8724 struct p2p_nfc_params *params, 8725 int forced_freq) 8726 { 8727 int res; 8728 8729 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8730 "connection handover"); 8731 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8732 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8733 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8734 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8735 wpa_s->p2p_go_he, NULL, 0); 8736 if (res) 8737 return res; 8738 8739 res = wpas_p2p_listen(wpa_s, 60); 8740 if (res) { 8741 p2p_unauthorize(wpa_s->global->p2p, 8742 params->peer->p2p_device_addr); 8743 } 8744 8745 return res; 8746 } 8747 8748 8749 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8750 const struct wpabuf *data, 8751 int sel, int tag, int forced_freq) 8752 { 8753 const u8 *pos, *end; 8754 u16 len, id; 8755 struct p2p_nfc_params params; 8756 int res; 8757 8758 os_memset(¶ms, 0, sizeof(params)); 8759 params.sel = sel; 8760 8761 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8762 8763 pos = wpabuf_head(data); 8764 end = pos + wpabuf_len(data); 8765 8766 if (end - pos < 2) { 8767 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8768 "attributes"); 8769 return -1; 8770 } 8771 len = WPA_GET_BE16(pos); 8772 pos += 2; 8773 if (len > end - pos) { 8774 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8775 "attributes"); 8776 return -1; 8777 } 8778 params.wsc_attr = pos; 8779 params.wsc_len = len; 8780 pos += len; 8781 8782 if (end - pos < 2) { 8783 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8784 "attributes"); 8785 return -1; 8786 } 8787 len = WPA_GET_BE16(pos); 8788 pos += 2; 8789 if (len > end - pos) { 8790 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8791 "attributes"); 8792 return -1; 8793 } 8794 params.p2p_attr = pos; 8795 params.p2p_len = len; 8796 pos += len; 8797 8798 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8799 params.wsc_attr, params.wsc_len); 8800 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8801 params.p2p_attr, params.p2p_len); 8802 if (pos < end) { 8803 wpa_hexdump(MSG_DEBUG, 8804 "P2P: Ignored extra data after P2P attributes", 8805 pos, end - pos); 8806 } 8807 8808 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8809 if (res) 8810 return res; 8811 8812 if (params.next_step == NO_ACTION) 8813 return 0; 8814 8815 if (params.next_step == BOTH_GO) { 8816 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8817 MAC2STR(params.peer->p2p_device_addr)); 8818 return 0; 8819 } 8820 8821 if (params.next_step == PEER_CLIENT) { 8822 if (!is_zero_ether_addr(params.go_dev_addr)) { 8823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8824 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8825 " ssid=\"%s\"", 8826 MAC2STR(params.peer->p2p_device_addr), 8827 params.go_freq, 8828 MAC2STR(params.go_dev_addr), 8829 wpa_ssid_txt(params.go_ssid, 8830 params.go_ssid_len)); 8831 } else { 8832 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8833 "peer=" MACSTR " freq=%d", 8834 MAC2STR(params.peer->p2p_device_addr), 8835 params.go_freq); 8836 } 8837 return 0; 8838 } 8839 8840 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8841 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8842 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8843 return 0; 8844 } 8845 8846 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8847 wpa_s->p2p_oob_dev_pw = NULL; 8848 8849 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8850 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8851 "received"); 8852 return -1; 8853 } 8854 8855 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8856 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8857 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8858 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8859 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8860 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8861 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8862 8863 if (tag) { 8864 if (id < 0x10) { 8865 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8866 "peer OOB Device Password Id %u", id); 8867 return -1; 8868 } 8869 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8870 "Device Password Id %u", id); 8871 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8872 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8873 params.oob_dev_pw_len - 8874 WPS_OOB_PUBKEY_HASH_LEN - 2); 8875 wpa_s->p2p_oob_dev_pw_id = id; 8876 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8877 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8878 params.oob_dev_pw_len - 8879 WPS_OOB_PUBKEY_HASH_LEN - 2); 8880 if (wpa_s->p2p_oob_dev_pw == NULL) 8881 return -1; 8882 8883 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8884 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8885 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8886 return -1; 8887 } else { 8888 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8889 "without Device Password"); 8890 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8891 } 8892 8893 switch (params.next_step) { 8894 case NO_ACTION: 8895 case BOTH_GO: 8896 case PEER_CLIENT: 8897 /* already covered above */ 8898 return 0; 8899 case JOIN_GROUP: 8900 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8901 case AUTH_JOIN: 8902 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8903 case INIT_GO_NEG: 8904 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8905 case RESP_GO_NEG: 8906 /* TODO: use own OOB Dev Pw */ 8907 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8908 } 8909 8910 return -1; 8911 } 8912 8913 8914 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8915 const struct wpabuf *data, int forced_freq) 8916 { 8917 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8918 return -1; 8919 8920 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8921 } 8922 8923 8924 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8925 const struct wpabuf *req, 8926 const struct wpabuf *sel, int forced_freq) 8927 { 8928 struct wpabuf *tmp; 8929 int ret; 8930 8931 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8932 return -1; 8933 8934 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8935 8936 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8937 wpabuf_head(req), wpabuf_len(req)); 8938 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8939 wpabuf_head(sel), wpabuf_len(sel)); 8940 if (forced_freq) 8941 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8942 tmp = ndef_parse_p2p(init ? sel : req); 8943 if (tmp == NULL) { 8944 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8945 return -1; 8946 } 8947 8948 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8949 forced_freq); 8950 wpabuf_free(tmp); 8951 8952 return ret; 8953 } 8954 8955 8956 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8957 { 8958 const u8 *if_addr; 8959 int go_intent = wpa_s->conf->p2p_go_intent; 8960 struct wpa_supplicant *iface; 8961 8962 if (wpa_s->global->p2p == NULL) 8963 return -1; 8964 8965 if (!enabled) { 8966 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8967 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8968 { 8969 if (!iface->ap_iface) 8970 continue; 8971 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8972 } 8973 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8974 0, NULL); 8975 if (wpa_s->p2p_nfc_tag_enabled) 8976 wpas_p2p_remove_pending_group_interface(wpa_s); 8977 wpa_s->p2p_nfc_tag_enabled = 0; 8978 return 0; 8979 } 8980 8981 if (wpa_s->global->p2p_disabled) 8982 return -1; 8983 8984 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8985 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8986 wpa_s->conf->wps_nfc_dev_pw == NULL || 8987 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8988 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8989 "to allow static handover cases"); 8990 return -1; 8991 } 8992 8993 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8994 8995 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8996 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8997 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8998 if (wpa_s->p2p_oob_dev_pw == NULL) 8999 return -1; 9000 wpa_s->p2p_peer_oob_pk_hash_known = 0; 9001 9002 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 9003 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 9004 /* 9005 * P2P Group Interface present and the command came on group 9006 * interface, so enable the token for the current interface. 9007 */ 9008 wpa_s->create_p2p_iface = 0; 9009 } else { 9010 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 9011 } 9012 9013 if (wpa_s->create_p2p_iface) { 9014 enum wpa_driver_if_type iftype; 9015 /* Prepare to add a new interface for the group */ 9016 iftype = WPA_IF_P2P_GROUP; 9017 if (go_intent == 15) 9018 iftype = WPA_IF_P2P_GO; 9019 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 9020 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 9021 "interface for the group"); 9022 return -1; 9023 } 9024 9025 if_addr = wpa_s->pending_interface_addr; 9026 } else if (wpa_s->p2p_mgmt) 9027 if_addr = wpa_s->parent->own_addr; 9028 else 9029 if_addr = wpa_s->own_addr; 9030 9031 wpa_s->p2p_nfc_tag_enabled = enabled; 9032 9033 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 9034 struct hostapd_data *hapd; 9035 if (iface->ap_iface == NULL) 9036 continue; 9037 hapd = iface->ap_iface->bss[0]; 9038 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 9039 hapd->conf->wps_nfc_dh_pubkey = 9040 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 9041 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 9042 hapd->conf->wps_nfc_dh_privkey = 9043 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 9044 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 9045 hapd->conf->wps_nfc_dev_pw = 9046 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 9047 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 9048 9049 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 9050 wpa_dbg(iface, MSG_DEBUG, 9051 "P2P: Failed to enable NFC Tag for GO"); 9052 } 9053 } 9054 p2p_set_authorized_oob_dev_pw_id( 9055 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 9056 if_addr); 9057 9058 return 0; 9059 } 9060 9061 #endif /* CONFIG_WPS_NFC */ 9062 9063 9064 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 9065 struct wpa_used_freq_data *freqs, 9066 unsigned int num) 9067 { 9068 u8 curr_chan, cand, chan; 9069 unsigned int i; 9070 9071 /* 9072 * If possible, optimize the Listen channel to be a channel that is 9073 * already used by one of the other interfaces. 9074 */ 9075 if (!wpa_s->conf->p2p_optimize_listen_chan) 9076 return; 9077 9078 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 9079 return; 9080 9081 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 9082 for (i = 0, cand = 0; i < num; i++) { 9083 ieee80211_freq_to_chan(freqs[i].freq, &chan); 9084 if (curr_chan == chan) { 9085 cand = 0; 9086 break; 9087 } 9088 9089 if (chan == 1 || chan == 6 || chan == 11) 9090 cand = chan; 9091 } 9092 9093 if (cand) { 9094 wpa_dbg(wpa_s, MSG_DEBUG, 9095 "P2P: Update Listen channel to %u based on operating channel", 9096 cand); 9097 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 9098 } 9099 } 9100 9101 9102 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 9103 { 9104 struct hostapd_config *conf; 9105 struct p2p_go_neg_results params; 9106 struct csa_settings csa_settings; 9107 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 9108 int old_freq = current_ssid->frequency; 9109 int ret; 9110 9111 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 9112 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 9113 return -1; 9114 } 9115 9116 /* 9117 * TODO: This function may not always work correctly. For example, 9118 * when we have a running GO and a BSS on a DFS channel. 9119 */ 9120 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) { 9121 wpa_dbg(wpa_s, MSG_DEBUG, 9122 "P2P CSA: Failed to select new frequency for GO"); 9123 return -1; 9124 } 9125 9126 if (current_ssid->frequency == params.freq) { 9127 wpa_dbg(wpa_s, MSG_DEBUG, 9128 "P2P CSA: Selected same frequency - not moving GO"); 9129 return 0; 9130 } 9131 9132 conf = hostapd_config_defaults(); 9133 if (!conf) { 9134 wpa_dbg(wpa_s, MSG_DEBUG, 9135 "P2P CSA: Failed to allocate default config"); 9136 return -1; 9137 } 9138 9139 current_ssid->frequency = params.freq; 9140 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 9141 wpa_dbg(wpa_s, MSG_DEBUG, 9142 "P2P CSA: Failed to create new GO config"); 9143 ret = -1; 9144 goto out; 9145 } 9146 9147 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 9148 wpa_dbg(wpa_s, MSG_DEBUG, 9149 "P2P CSA: CSA to a different band is not supported"); 9150 ret = -1; 9151 goto out; 9152 } 9153 9154 os_memset(&csa_settings, 0, sizeof(csa_settings)); 9155 csa_settings.cs_count = P2P_GO_CSA_COUNT; 9156 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 9157 csa_settings.freq_params.freq = params.freq; 9158 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 9159 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 9160 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 9161 9162 if (conf->ieee80211ac) { 9163 int freq1 = 0, freq2 = 0; 9164 u8 chan, opclass; 9165 9166 if (ieee80211_freq_to_channel_ext(params.freq, 9167 conf->secondary_channel, 9168 conf->vht_oper_chwidth, 9169 &opclass, &chan) == 9170 NUM_HOSTAPD_MODES) { 9171 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 9172 ret = -1; 9173 goto out; 9174 } 9175 9176 if (conf->vht_oper_centr_freq_seg0_idx) 9177 freq1 = ieee80211_chan_to_freq( 9178 NULL, opclass, 9179 conf->vht_oper_centr_freq_seg0_idx); 9180 9181 if (conf->vht_oper_centr_freq_seg1_idx) 9182 freq2 = ieee80211_chan_to_freq( 9183 NULL, opclass, 9184 conf->vht_oper_centr_freq_seg1_idx); 9185 9186 if (freq1 < 0 || freq2 < 0) { 9187 wpa_dbg(wpa_s, MSG_DEBUG, 9188 "P2P CSA: Selected invalid VHT center freqs"); 9189 ret = -1; 9190 goto out; 9191 } 9192 9193 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 9194 csa_settings.freq_params.center_freq1 = freq1; 9195 csa_settings.freq_params.center_freq2 = freq2; 9196 9197 switch (conf->vht_oper_chwidth) { 9198 case CHANWIDTH_80MHZ: 9199 case CHANWIDTH_80P80MHZ: 9200 csa_settings.freq_params.bandwidth = 80; 9201 break; 9202 case CHANWIDTH_160MHZ: 9203 csa_settings.freq_params.bandwidth = 160; 9204 break; 9205 } 9206 } 9207 9208 ret = ap_switch_channel(wpa_s, &csa_settings); 9209 out: 9210 current_ssid->frequency = old_freq; 9211 hostapd_config_free(conf); 9212 return ret; 9213 } 9214 9215 9216 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 9217 { 9218 struct p2p_go_neg_results params; 9219 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 9220 9221 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 9222 9223 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 9224 current_ssid->frequency); 9225 9226 /* Stop the AP functionality */ 9227 /* TODO: Should do this in a way that does not indicated to possible 9228 * P2P Clients in the group that the group is terminated. */ 9229 wpa_supplicant_ap_deinit(wpa_s); 9230 9231 /* Reselect the GO frequency */ 9232 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) { 9233 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 9234 wpas_p2p_group_delete(wpa_s, 9235 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9236 return; 9237 } 9238 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 9239 params.freq); 9240 9241 if (params.freq && 9242 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 9243 wpa_printf(MSG_DEBUG, 9244 "P2P: Selected freq (%u MHz) is not valid for P2P", 9245 params.freq); 9246 wpas_p2p_group_delete(wpa_s, 9247 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9248 return; 9249 } 9250 9251 /* Update the frequency */ 9252 current_ssid->frequency = params.freq; 9253 wpa_s->connect_without_scan = current_ssid; 9254 wpa_s->reassociate = 1; 9255 wpa_s->disconnected = 0; 9256 wpa_supplicant_req_scan(wpa_s, 0, 0); 9257 } 9258 9259 9260 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 9261 { 9262 struct wpa_supplicant *wpa_s = eloop_ctx; 9263 9264 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 9265 return; 9266 9267 wpas_p2p_go_update_common_freqs(wpa_s); 9268 9269 /* Do not move GO in the middle of a CSA */ 9270 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9271 wpa_printf(MSG_DEBUG, 9272 "P2P: CSA is in progress - not moving GO"); 9273 return; 9274 } 9275 9276 /* 9277 * First, try a channel switch flow. If it is not supported or fails, 9278 * take down the GO and bring it up again. 9279 */ 9280 if (wpas_p2p_move_go_csa(wpa_s) < 0) 9281 wpas_p2p_move_go_no_csa(wpa_s); 9282 } 9283 9284 9285 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 9286 { 9287 struct wpa_supplicant *wpa_s = eloop_ctx; 9288 struct wpa_used_freq_data *freqs = NULL; 9289 unsigned int num = wpa_s->num_multichan_concurrent; 9290 9291 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 9292 if (!freqs) 9293 return; 9294 9295 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 9296 9297 /* Previous attempt to move a GO was not possible -- try again. */ 9298 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 9299 WPAS_P2P_CHANNEL_UPDATE_ANY); 9300 9301 os_free(freqs); 9302 } 9303 9304 9305 /* 9306 * Consider moving a GO from its currently used frequency: 9307 * 1. It is possible that due to regulatory consideration the frequency 9308 * can no longer be used and there is a need to evacuate the GO. 9309 * 2. It is possible that due to MCC considerations, it would be preferable 9310 * to move the GO to a channel that is currently used by some other 9311 * station interface. 9312 * 9313 * In case a frequency that became invalid is once again valid, cancel a 9314 * previously initiated GO frequency change. 9315 */ 9316 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 9317 struct wpa_used_freq_data *freqs, 9318 unsigned int num) 9319 { 9320 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 9321 unsigned int timeout; 9322 int freq; 9323 int dfs_offload; 9324 9325 wpas_p2p_go_update_common_freqs(wpa_s); 9326 9327 freq = wpa_s->current_ssid->frequency; 9328 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 9329 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes); 9330 for (i = 0, invalid_freq = 0; i < num; i++) { 9331 if (freqs[i].freq == freq) { 9332 flags = freqs[i].flags; 9333 9334 /* The channel is invalid, must change it */ 9335 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) && 9336 !dfs_offload) { 9337 wpa_dbg(wpa_s, MSG_DEBUG, 9338 "P2P: Freq=%d MHz no longer valid for GO", 9339 freq); 9340 invalid_freq = 1; 9341 } 9342 } else if (freqs[i].flags == 0) { 9343 /* Freq is not used by any other station interface */ 9344 continue; 9345 } else if (!p2p_supported_freq(wpa_s->global->p2p, 9346 freqs[i].freq) && !dfs_offload) { 9347 /* Freq is not valid for P2P use cases */ 9348 continue; 9349 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9350 P2P_GO_FREQ_MOVE_SCM) { 9351 policy_move = 1; 9352 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9353 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 9354 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9355 policy_move = 1; 9356 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 9357 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9358 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9359 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9360 policy_move = 1; 9361 } else if ((wpa_s->drv_flags & 9362 WPA_DRIVER_FLAGS_AP_CSA) && 9363 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9364 u8 chan; 9365 9366 /* 9367 * We do not support CSA between bands, so move 9368 * GO only within the same band. 9369 */ 9370 if (wpa_s->ap_iface->current_mode->mode == 9371 ieee80211_freq_to_chan(freqs[i].freq, 9372 &chan)) 9373 policy_move = 1; 9374 } 9375 } 9376 } 9377 9378 wpa_dbg(wpa_s, MSG_DEBUG, 9379 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9380 invalid_freq, policy_move, flags); 9381 9382 /* 9383 * The channel is valid, or we are going to have a policy move, so 9384 * cancel timeout. 9385 */ 9386 if (!invalid_freq || policy_move) { 9387 wpa_dbg(wpa_s, MSG_DEBUG, 9388 "P2P: Cancel a GO move from freq=%d MHz", freq); 9389 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9390 9391 if (wpas_p2p_in_progress(wpa_s)) { 9392 wpa_dbg(wpa_s, MSG_DEBUG, 9393 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9394 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9395 wpa_s, NULL); 9396 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9397 wpas_p2p_reconsider_moving_go, 9398 wpa_s, NULL); 9399 return; 9400 } 9401 } 9402 9403 if (!invalid_freq && (!policy_move || flags != 0)) { 9404 wpa_dbg(wpa_s, MSG_DEBUG, 9405 "P2P: Not initiating a GO frequency change"); 9406 return; 9407 } 9408 9409 /* 9410 * Do not consider moving GO if it is in the middle of a CSA. When the 9411 * CSA is finished this flow should be retriggered. 9412 */ 9413 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9414 wpa_dbg(wpa_s, MSG_DEBUG, 9415 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9416 return; 9417 } 9418 9419 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9420 timeout = P2P_GO_FREQ_CHANGE_TIME; 9421 else 9422 timeout = 0; 9423 9424 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9425 freq, timeout); 9426 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9427 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9428 } 9429 9430 9431 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9432 struct wpa_used_freq_data *freqs, 9433 unsigned int num, 9434 enum wpas_p2p_channel_update_trig trig) 9435 { 9436 struct wpa_supplicant *ifs; 9437 9438 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9439 NULL); 9440 9441 /* 9442 * Travers all the radio interfaces, and for each GO interface, check 9443 * if there is a need to move the GO from the frequency it is using, 9444 * or in case the frequency is valid again, cancel the evacuation flow. 9445 */ 9446 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9447 radio_list) { 9448 if (ifs->current_ssid == NULL || 9449 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9450 continue; 9451 9452 /* 9453 * The GO was just started or completed channel switch, no need 9454 * to move it. 9455 */ 9456 if (wpa_s == ifs && 9457 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9458 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9459 wpa_dbg(wpa_s, MSG_DEBUG, 9460 "P2P: GO move - schedule re-consideration"); 9461 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9462 wpas_p2p_reconsider_moving_go, 9463 wpa_s, NULL); 9464 continue; 9465 } 9466 9467 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9468 } 9469 } 9470 9471 9472 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9473 { 9474 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9475 return; 9476 9477 wpas_p2p_update_channel_list(wpa_s, 9478 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9479 } 9480 9481 9482 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9483 { 9484 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9485 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9486 "the management interface is being removed"); 9487 wpas_p2p_deinit_global(wpa_s->global); 9488 } 9489 } 9490 9491 9492 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9493 { 9494 if (wpa_s->ap_iface->bss) 9495 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9496 wpas_p2p_group_deinit(wpa_s); 9497 } 9498 9499 9500 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq, 9501 unsigned int period, unsigned int interval, 9502 unsigned int count) 9503 { 9504 struct p2p_data *p2p = wpa_s->global->p2p; 9505 u8 *device_types; 9506 size_t dev_types_len; 9507 struct wpabuf *buf; 9508 int ret; 9509 9510 if (wpa_s->p2p_lo_started) { 9511 wpa_dbg(wpa_s, MSG_DEBUG, 9512 "P2P Listen offload is already started"); 9513 return 0; 9514 } 9515 9516 if (wpa_s->global->p2p == NULL || 9517 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) { 9518 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported"); 9519 return -1; 9520 } 9521 9522 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 9523 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u", 9524 freq); 9525 return -1; 9526 } 9527 9528 /* Get device type */ 9529 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) * 9530 WPS_DEV_TYPE_LEN; 9531 device_types = os_malloc(dev_types_len); 9532 if (!device_types) 9533 return -1; 9534 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN); 9535 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type, 9536 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN); 9537 9538 /* Get Probe Response IE(s) */ 9539 buf = p2p_build_probe_resp_template(p2p, freq); 9540 if (!buf) { 9541 os_free(device_types); 9542 return -1; 9543 } 9544 9545 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count, 9546 device_types, dev_types_len, 9547 wpabuf_mhead_u8(buf), wpabuf_len(buf)); 9548 if (ret < 0) 9549 wpa_dbg(wpa_s, MSG_DEBUG, 9550 "P2P: Failed to start P2P listen offload"); 9551 9552 os_free(device_types); 9553 wpabuf_free(buf); 9554 9555 if (ret == 0) { 9556 wpa_s->p2p_lo_started = 1; 9557 9558 /* Stop current P2P listen if any */ 9559 wpas_stop_listen(wpa_s); 9560 } 9561 9562 return ret; 9563 } 9564 9565 9566 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s) 9567 { 9568 int ret; 9569 9570 if (!wpa_s->p2p_lo_started) 9571 return 0; 9572 9573 ret = wpa_drv_p2p_lo_stop(wpa_s); 9574 if (ret < 0) 9575 wpa_dbg(wpa_s, MSG_DEBUG, 9576 "P2P: Failed to stop P2P listen offload"); 9577 9578 wpa_s->p2p_lo_started = 0; 9579 return ret; 9580 } 9581