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51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef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