1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j (at) w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10 #include "includes.h" 11 12 #include "common.h" 13 #include "eloop.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/wpa_ctrl.h" 17 #include "wps/wps_i.h" 18 #include "p2p/p2p.h" 19 #include "ap/hostapd.h" 20 #include "ap/ap_config.h" 21 #include "ap/sta_info.h" 22 #include "ap/ap_drv_ops.h" 23 #include "ap/wps_hostapd.h" 24 #include "ap/p2p_hostapd.h" 25 #include "ap/dfs.h" 26 #include "eapol_supp/eapol_supp_sm.h" 27 #include "rsn_supp/wpa.h" 28 #include "wpa_supplicant_i.h" 29 #include "driver_i.h" 30 #include "ap.h" 31 #include "config_ssid.h" 32 #include "config.h" 33 #include "notify.h" 34 #include "scan.h" 35 #include "bss.h" 36 #include "offchannel.h" 37 #include "wps_supplicant.h" 38 #include "p2p_supplicant.h" 39 #include "wifi_display.h" 40 41 42 /* 43 * How many times to try to scan to find the GO before giving up on join 44 * request. 45 */ 46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 47 48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5 49 50 /** 51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef P2P_MAX_CLIENT_IDLE 64 /* 65 * How many seconds to try to reconnect to the GO when connection in P2P client 66 * role has been lost. 67 */ 68 #define P2P_MAX_CLIENT_IDLE 10 69 #endif /* P2P_MAX_CLIENT_IDLE */ 70 71 #ifndef P2P_MAX_INITIAL_CONN_WAIT 72 /* 73 * How many seconds to wait for initial 4-way handshake to get completed after 74 * WPS provisioning step or after the re-invocation of a persistent group on a 75 * P2P Client. 76 */ 77 #define P2P_MAX_INITIAL_CONN_WAIT 10 78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 79 80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 81 /* 82 * How many seconds to wait for initial 4-way handshake to get completed after 83 * WPS provisioning step on the GO. This controls the extra time the P2P 84 * operation is considered to be in progress (e.g., to delay other scans) after 85 * WPS provisioning has been completed on the GO during group formation. 86 */ 87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10 88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 89 90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 91 /* 92 * How many seconds to wait for initial 4-way handshake to get completed after 93 * re-invocation of a persistent group on the GO when the client is expected 94 * to connect automatically (no user interaction). 95 */ 96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 98 99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 100 101 /* 102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 103 * was not possible. 104 */ 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30 106 107 enum p2p_group_removal_reason { 108 P2P_GROUP_REMOVAL_UNKNOWN, 109 P2P_GROUP_REMOVAL_SILENT, 110 P2P_GROUP_REMOVAL_FORMATION_FAILED, 111 P2P_GROUP_REMOVAL_REQUESTED, 112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 113 P2P_GROUP_REMOVAL_UNAVAILABLE, 114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 115 P2P_GROUP_REMOVAL_PSK_FAILURE, 116 P2P_GROUP_REMOVAL_FREQ_CONFLICT, 117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL 118 }; 119 120 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 122 static struct wpa_supplicant * 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 124 int go); 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 126 const u8 *ssid, size_t ssid_len); 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 128 int *force_freq, int *pref_freq, int go, 129 unsigned int *pref_freq_list, 130 unsigned int *num_pref_freq); 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 132 const u8 *ssid, size_t ssid_len); 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 135 const u8 *dev_addr, enum p2p_wps_method wps_method, 136 int auto_join, int freq, 137 const u8 *ssid, size_t ssid_len); 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 143 void *timeout_ctx); 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 146 int group_added); 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 148 static void wpas_stop_listen(void *ctx); 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 152 enum wpa_driver_if_type type); 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 154 int already_deleted); 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 156 struct wpa_used_freq_data *freqs, 157 unsigned int num); 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 160 static void 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 162 struct wpa_used_freq_data *freqs, unsigned int num, 163 enum wpas_p2p_channel_update_trig trig); 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx); 165 166 167 /* 168 * Get the number of concurrent channels that the HW can operate, but that are 169 * currently not in use by any of the wpa_supplicant interfaces. 170 */ 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 172 { 173 int *freqs; 174 int num, unused; 175 176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 177 if (!freqs) 178 return -1; 179 180 num = get_shared_radio_freqs(wpa_s, freqs, 181 wpa_s->num_multichan_concurrent); 182 os_free(freqs); 183 184 unused = wpa_s->num_multichan_concurrent - num; 185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 186 return unused; 187 } 188 189 190 /* 191 * Get the frequencies that are currently in use by one or more of the virtual 192 * interfaces, and that are also valid for P2P operation. 193 */ 194 static unsigned int 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 196 struct wpa_used_freq_data *p2p_freqs, 197 unsigned int len) 198 { 199 struct wpa_used_freq_data *freqs; 200 unsigned int num, i, j; 201 202 freqs = os_calloc(wpa_s->num_multichan_concurrent, 203 sizeof(struct wpa_used_freq_data)); 204 if (!freqs) 205 return 0; 206 207 num = get_shared_radio_freqs_data(wpa_s, freqs, 208 wpa_s->num_multichan_concurrent); 209 210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len); 211 212 for (i = 0, j = 0; i < num && j < len; i++) { 213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 214 p2p_freqs[j++] = freqs[i]; 215 } 216 217 os_free(freqs); 218 219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j); 220 221 return j; 222 } 223 224 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 226 int freq) 227 { 228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 229 return; 230 231 /* Use the wpa_s used to control the P2P Device operation */ 232 wpa_s = wpa_s->global->p2p_init_wpa_s; 233 234 if (wpa_s->conf->p2p_ignore_shared_freq && 235 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 236 wpas_p2p_num_unused_channels(wpa_s) > 0) { 237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 238 freq); 239 freq = 0; 240 } 241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 242 } 243 244 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 246 struct wpa_scan_results *scan_res) 247 { 248 size_t i; 249 250 if (wpa_s->p2p_scan_work) { 251 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 252 wpa_s->p2p_scan_work = NULL; 253 radio_work_done(work); 254 } 255 256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 257 return; 258 259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 260 (int) scan_res->num); 261 262 for (i = 0; i < scan_res->num; i++) { 263 struct wpa_scan_res *bss = scan_res->res[i]; 264 struct os_reltime time_tmp_age, entry_ts; 265 const u8 *ies; 266 size_t ies_len; 267 268 time_tmp_age.sec = bss->age / 1000; 269 time_tmp_age.usec = (bss->age % 1000) * 1000; 270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 271 272 ies = (const u8 *) (bss + 1); 273 ies_len = bss->ie_len; 274 if (bss->beacon_ie_len > 0 && 275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 278 MACSTR, MAC2STR(bss->bssid)); 279 ies = ies + ies_len; 280 ies_len = bss->beacon_ie_len; 281 } 282 283 284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 285 bss->freq, &entry_ts, bss->level, 286 ies, ies_len) > 0) 287 break; 288 } 289 290 p2p_scan_res_handled(wpa_s->global->p2p); 291 } 292 293 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 295 { 296 struct wpa_supplicant *wpa_s = work->wpa_s; 297 struct wpa_driver_scan_params *params = work->ctx; 298 int ret; 299 300 if (deinit) { 301 if (!work->started) { 302 wpa_scan_free_params(params); 303 return; 304 } 305 306 wpa_s->p2p_scan_work = NULL; 307 return; 308 } 309 310 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 int network_id = -1; 1305 1306 /* 1307 * This callback is likely called for the main interface. Update wpa_s 1308 * to use the group interface if a new interface was created for the 1309 * group. 1310 */ 1311 if (wpa_s->global->p2p_group_formation) 1312 wpa_s = wpa_s->global->p2p_group_formation; 1313 if (wpa_s->p2p_go_group_formation_completed) { 1314 wpa_s->global->p2p_group_formation = NULL; 1315 wpa_s->p2p_in_provisioning = 0; 1316 } 1317 wpa_s->p2p_in_invitation = 0; 1318 wpa_s->group_formation_reported = 1; 1319 1320 if (!success) { 1321 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1322 P2P_EVENT_GROUP_FORMATION_FAILURE); 1323 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1324 if (already_deleted) 1325 return; 1326 wpas_p2p_group_delete(wpa_s, 1327 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1328 return; 1329 } 1330 1331 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1332 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1333 1334 ssid = wpa_s->current_ssid; 1335 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1336 ssid->mode = WPAS_MODE_P2P_GO; 1337 p2p_group_notif_formation_done(wpa_s->p2p_group); 1338 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1339 } 1340 1341 persistent = 0; 1342 if (ssid) { 1343 client = ssid->mode == WPAS_MODE_INFRA; 1344 if (ssid->mode == WPAS_MODE_P2P_GO) { 1345 persistent = ssid->p2p_persistent_group; 1346 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1347 ETH_ALEN); 1348 } else 1349 persistent = wpas_p2p_persistent_group(wpa_s, 1350 go_dev_addr, 1351 ssid->ssid, 1352 ssid->ssid_len); 1353 } else { 1354 client = wpa_s->p2p_group_interface == 1355 P2P_GROUP_INTERFACE_CLIENT; 1356 os_memset(go_dev_addr, 0, ETH_ALEN); 1357 } 1358 1359 wpa_s->show_group_started = 0; 1360 if (client) { 1361 /* 1362 * Indicate event only after successfully completed 4-way 1363 * handshake, i.e., when the interface is ready for data 1364 * packets. 1365 */ 1366 wpa_s->show_group_started = 1; 1367 } else { 1368 wpas_p2p_group_started(wpa_s, 1, ssid, 1369 ssid ? ssid->frequency : 0, 1370 ssid && ssid->passphrase == NULL && 1371 ssid->psk_set ? ssid->psk : NULL, 1372 ssid ? ssid->passphrase : NULL, 1373 go_dev_addr, persistent, ""); 1374 wpas_p2p_cross_connect_setup(wpa_s); 1375 wpas_p2p_set_group_idle_timeout(wpa_s); 1376 } 1377 1378 if (persistent) 1379 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev, 1380 ssid, go_dev_addr); 1381 else { 1382 os_free(wpa_s->global->add_psk); 1383 wpa_s->global->add_psk = NULL; 1384 } 1385 if (network_id < 0 && ssid) 1386 network_id = ssid->id; 1387 if (!client) { 1388 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1389 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1390 } 1391 } 1392 1393 1394 struct send_action_work { 1395 unsigned int freq; 1396 u8 dst[ETH_ALEN]; 1397 u8 src[ETH_ALEN]; 1398 u8 bssid[ETH_ALEN]; 1399 size_t len; 1400 unsigned int wait_time; 1401 u8 buf[0]; 1402 }; 1403 1404 1405 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s) 1406 { 1407 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx; 1408 1409 wpa_printf(MSG_DEBUG, 1410 "P2P: Free Action frame radio work @%p (freq=%u dst=" 1411 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)", 1412 wpa_s->p2p_send_action_work, awork->freq, 1413 MAC2STR(awork->dst), MAC2STR(awork->src), 1414 MAC2STR(awork->bssid), awork->wait_time); 1415 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame", 1416 awork->buf, awork->len); 1417 os_free(awork); 1418 wpa_s->p2p_send_action_work->ctx = NULL; 1419 radio_work_done(wpa_s->p2p_send_action_work); 1420 wpa_s->p2p_send_action_work = NULL; 1421 } 1422 1423 1424 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1425 void *timeout_ctx) 1426 { 1427 struct wpa_supplicant *wpa_s = eloop_ctx; 1428 1429 if (!wpa_s->p2p_send_action_work) 1430 return; 1431 1432 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1433 wpas_p2p_free_send_action_work(wpa_s); 1434 } 1435 1436 1437 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1438 { 1439 if (wpa_s->p2p_send_action_work) { 1440 struct send_action_work *awork; 1441 1442 awork = wpa_s->p2p_send_action_work->ctx; 1443 wpa_printf(MSG_DEBUG, 1444 "P2P: Clear Action TX work @%p (wait_time=%u)", 1445 wpa_s->p2p_send_action_work, awork->wait_time); 1446 if (awork->wait_time == 0) { 1447 wpas_p2p_free_send_action_work(wpa_s); 1448 } else { 1449 /* 1450 * In theory, this should not be needed, but number of 1451 * places in the P2P code is still using non-zero wait 1452 * time for the last Action frame in the sequence and 1453 * some of these do not call send_action_done(). 1454 */ 1455 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1456 wpa_s, NULL); 1457 eloop_register_timeout( 1458 0, awork->wait_time * 1000, 1459 wpas_p2p_send_action_work_timeout, 1460 wpa_s, NULL); 1461 } 1462 } 1463 } 1464 1465 1466 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1467 unsigned int freq, 1468 const u8 *dst, const u8 *src, 1469 const u8 *bssid, 1470 const u8 *data, size_t data_len, 1471 enum offchannel_send_action_result 1472 result) 1473 { 1474 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1475 1476 wpas_p2p_action_tx_clear(wpa_s); 1477 1478 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1479 return; 1480 1481 switch (result) { 1482 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1483 res = P2P_SEND_ACTION_SUCCESS; 1484 break; 1485 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1486 res = P2P_SEND_ACTION_NO_ACK; 1487 break; 1488 case OFFCHANNEL_SEND_ACTION_FAILED: 1489 res = P2P_SEND_ACTION_FAILED; 1490 break; 1491 } 1492 1493 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1494 1495 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1496 wpa_s->pending_pd_before_join && 1497 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1498 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1499 wpa_s->p2p_fallback_to_go_neg) { 1500 wpa_s->pending_pd_before_join = 0; 1501 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1502 "during p2p_connect-auto"); 1503 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1504 P2P_EVENT_FALLBACK_TO_GO_NEG 1505 "reason=no-ACK-to-PD-Req"); 1506 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1507 return; 1508 } 1509 } 1510 1511 1512 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1513 { 1514 struct wpa_supplicant *wpa_s = work->wpa_s; 1515 struct send_action_work *awork = work->ctx; 1516 1517 if (deinit) { 1518 if (work->started) { 1519 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1520 wpa_s, NULL); 1521 wpa_s->p2p_send_action_work = NULL; 1522 offchannel_send_action_done(wpa_s); 1523 } 1524 os_free(awork); 1525 return; 1526 } 1527 1528 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1529 awork->bssid, awork->buf, awork->len, 1530 awork->wait_time, 1531 wpas_p2p_send_action_tx_status, 1) < 0) { 1532 os_free(awork); 1533 radio_work_done(work); 1534 return; 1535 } 1536 wpa_s->p2p_send_action_work = work; 1537 } 1538 1539 1540 static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1541 unsigned int freq, const u8 *dst, 1542 const u8 *src, const u8 *bssid, const u8 *buf, 1543 size_t len, unsigned int wait_time) 1544 { 1545 struct send_action_work *awork; 1546 1547 if (wpa_s->p2p_send_action_work) { 1548 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1549 return -1; 1550 } 1551 1552 awork = os_zalloc(sizeof(*awork) + len); 1553 if (awork == NULL) 1554 return -1; 1555 1556 awork->freq = freq; 1557 os_memcpy(awork->dst, dst, ETH_ALEN); 1558 os_memcpy(awork->src, src, ETH_ALEN); 1559 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1560 awork->len = len; 1561 awork->wait_time = wait_time; 1562 os_memcpy(awork->buf, buf, len); 1563 1564 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1565 wpas_send_action_cb, awork) < 0) { 1566 os_free(awork); 1567 return -1; 1568 } 1569 1570 return 0; 1571 } 1572 1573 1574 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1575 const u8 *src, const u8 *bssid, const u8 *buf, 1576 size_t len, unsigned int wait_time) 1577 { 1578 struct wpa_supplicant *wpa_s = ctx; 1579 int listen_freq = -1, send_freq = -1; 1580 1581 if (wpa_s->p2p_listen_work) 1582 listen_freq = wpa_s->p2p_listen_work->freq; 1583 if (wpa_s->p2p_send_action_work) 1584 send_freq = wpa_s->p2p_send_action_work->freq; 1585 if (listen_freq != (int) freq && send_freq != (int) freq) { 1586 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1587 listen_freq, send_freq); 1588 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1589 len, wait_time); 1590 } 1591 1592 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1593 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1594 wait_time, 1595 wpas_p2p_send_action_tx_status, 1); 1596 } 1597 1598 1599 static void wpas_send_action_done(void *ctx) 1600 { 1601 struct wpa_supplicant *wpa_s = ctx; 1602 1603 if (wpa_s->p2p_send_action_work) { 1604 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1605 wpa_s, NULL); 1606 os_free(wpa_s->p2p_send_action_work->ctx); 1607 radio_work_done(wpa_s->p2p_send_action_work); 1608 wpa_s->p2p_send_action_work = NULL; 1609 } 1610 1611 offchannel_send_action_done(wpa_s); 1612 } 1613 1614 1615 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1616 struct p2p_go_neg_results *params) 1617 { 1618 if (wpa_s->go_params == NULL) { 1619 wpa_s->go_params = os_malloc(sizeof(*params)); 1620 if (wpa_s->go_params == NULL) 1621 return -1; 1622 } 1623 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1624 return 0; 1625 } 1626 1627 1628 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1629 struct p2p_go_neg_results *res) 1630 { 1631 wpa_s->group_formation_reported = 0; 1632 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1633 " dev_addr " MACSTR " wps_method %d", 1634 MAC2STR(res->peer_interface_addr), 1635 MAC2STR(res->peer_device_addr), res->wps_method); 1636 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1637 res->ssid, res->ssid_len); 1638 wpa_supplicant_ap_deinit(wpa_s); 1639 wpas_copy_go_neg_results(wpa_s, res); 1640 if (res->wps_method == WPS_PBC) { 1641 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1642 #ifdef CONFIG_WPS_NFC 1643 } else if (res->wps_method == WPS_NFC) { 1644 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1645 res->peer_interface_addr, 1646 wpa_s->p2pdev->p2p_oob_dev_pw, 1647 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1, 1648 wpa_s->p2pdev->p2p_oob_dev_pw_id == 1649 DEV_PW_NFC_CONNECTION_HANDOVER ? 1650 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : 1651 NULL, 1652 NULL, 0, 0); 1653 #endif /* CONFIG_WPS_NFC */ 1654 } else { 1655 u16 dev_pw_id = DEV_PW_DEFAULT; 1656 if (wpa_s->p2p_wps_method == WPS_P2PS) 1657 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1658 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1659 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1660 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1661 wpa_s->p2p_pin, 1, dev_pw_id); 1662 } 1663 } 1664 1665 1666 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1667 struct wpa_ssid *ssid) 1668 { 1669 struct wpa_ssid *persistent; 1670 struct psk_list_entry *psk; 1671 struct hostapd_data *hapd; 1672 1673 if (!wpa_s->ap_iface) 1674 return; 1675 1676 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 1677 ssid->ssid_len); 1678 if (persistent == NULL) 1679 return; 1680 1681 hapd = wpa_s->ap_iface->bss[0]; 1682 1683 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1684 list) { 1685 struct hostapd_wpa_psk *hpsk; 1686 1687 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1688 MACSTR " psk=%d", 1689 MAC2STR(psk->addr), psk->p2p); 1690 hpsk = os_zalloc(sizeof(*hpsk)); 1691 if (hpsk == NULL) 1692 break; 1693 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1694 if (psk->p2p) 1695 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1696 else 1697 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1698 hpsk->next = hapd->conf->ssid.wpa_psk; 1699 hapd->conf->ssid.wpa_psk = hpsk; 1700 } 1701 } 1702 1703 1704 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1705 { 1706 unsigned int i; 1707 1708 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):", 1709 wpa_s->p2p_group_common_freqs_num); 1710 1711 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) 1712 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d", 1713 i, wpa_s->p2p_group_common_freqs[i]); 1714 } 1715 1716 1717 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1718 struct p2p_go_neg_results *params) 1719 { 1720 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1721 1722 wpa_s->p2p_group_common_freqs_num = 0; 1723 os_free(wpa_s->p2p_group_common_freqs); 1724 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1725 if (!wpa_s->p2p_group_common_freqs) 1726 return; 1727 1728 for (i = 0; i < len; i++) { 1729 if (!wpa_s->go_params->freq_list[i]) 1730 break; 1731 wpa_s->p2p_group_common_freqs[i] = 1732 wpa_s->go_params->freq_list[i]; 1733 } 1734 wpa_s->p2p_group_common_freqs_num = i; 1735 } 1736 1737 1738 static void p2p_config_write(struct wpa_supplicant *wpa_s) 1739 { 1740 #ifndef CONFIG_NO_CONFIG_WRITE 1741 if (wpa_s->p2pdev->conf->update_config && 1742 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 1743 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1744 #endif /* CONFIG_NO_CONFIG_WRITE */ 1745 } 1746 1747 1748 static void p2p_go_configured(void *ctx, void *data) 1749 { 1750 struct wpa_supplicant *wpa_s = ctx; 1751 struct p2p_go_neg_results *params = data; 1752 struct wpa_ssid *ssid; 1753 int network_id = -1; 1754 1755 wpa_s->ap_configured_cb = NULL; 1756 wpa_s->ap_configured_cb_ctx = NULL; 1757 wpa_s->ap_configured_cb_data = NULL; 1758 if (!wpa_s->go_params) { 1759 wpa_printf(MSG_ERROR, 1760 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL"); 1761 return; 1762 } 1763 1764 p2p_go_save_group_common_freqs(wpa_s, params); 1765 p2p_go_dump_common_freqs(wpa_s); 1766 1767 ssid = wpa_s->current_ssid; 1768 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1769 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1770 if (wpa_s->global->p2p_group_formation == wpa_s) 1771 wpa_s->global->p2p_group_formation = NULL; 1772 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1773 params->passphrase[0] == '\0' ? 1774 params->psk : NULL, 1775 params->passphrase, 1776 wpa_s->global->p2p_dev_addr, 1777 params->persistent_group, ""); 1778 wpa_s->group_formation_reported = 1; 1779 1780 if (wpa_s->p2pdev->p2ps_method_config_any) { 1781 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) { 1782 wpa_dbg(wpa_s, MSG_DEBUG, 1783 "P2PS: Setting default PIN for ANY"); 1784 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1785 "12345670", NULL, 0, 1786 0); 1787 } else { 1788 wpa_dbg(wpa_s, MSG_DEBUG, 1789 "P2PS: Setting default PIN for " MACSTR, 1790 MAC2STR(wpa_s->p2pdev->p2ps_join_addr)); 1791 wpa_supplicant_ap_wps_pin( 1792 wpa_s, wpa_s->p2pdev->p2ps_join_addr, 1793 "12345670", NULL, 0, 0); 1794 } 1795 wpa_s->p2pdev->p2ps_method_config_any = 0; 1796 } 1797 1798 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1799 if (params->persistent_group) { 1800 network_id = wpas_p2p_store_persistent_group( 1801 wpa_s->p2pdev, ssid, 1802 wpa_s->global->p2p_dev_addr); 1803 wpas_p2p_add_psk_list(wpa_s, ssid); 1804 } 1805 if (network_id < 0) 1806 network_id = ssid->id; 1807 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1808 wpas_p2p_cross_connect_setup(wpa_s); 1809 wpas_p2p_set_group_idle_timeout(wpa_s); 1810 1811 if (wpa_s->p2p_first_connection_timeout) { 1812 wpa_dbg(wpa_s, MSG_DEBUG, 1813 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1814 wpa_s->p2p_first_connection_timeout); 1815 wpa_s->p2p_go_group_formation_completed = 0; 1816 wpa_s->global->p2p_group_formation = wpa_s; 1817 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1818 wpa_s->p2pdev, NULL); 1819 eloop_register_timeout( 1820 wpa_s->p2p_first_connection_timeout, 0, 1821 wpas_p2p_group_formation_timeout, 1822 wpa_s->p2pdev, NULL); 1823 } 1824 1825 return; 1826 } 1827 1828 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1829 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1830 params->peer_interface_addr)) { 1831 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1832 "filtering"); 1833 return; 1834 } 1835 if (params->wps_method == WPS_PBC) { 1836 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1837 params->peer_device_addr); 1838 #ifdef CONFIG_WPS_NFC 1839 } else if (params->wps_method == WPS_NFC) { 1840 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 1841 DEV_PW_NFC_CONNECTION_HANDOVER && 1842 !wpa_s->p2pdev->p2p_oob_dev_pw) { 1843 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1844 return; 1845 } 1846 wpas_ap_wps_add_nfc_pw( 1847 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 1848 wpa_s->p2pdev->p2p_oob_dev_pw, 1849 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 1850 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 1851 #endif /* CONFIG_WPS_NFC */ 1852 } else if (wpa_s->p2p_pin[0]) 1853 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1854 wpa_s->p2p_pin, NULL, 0, 0); 1855 os_free(wpa_s->go_params); 1856 wpa_s->go_params = NULL; 1857 } 1858 1859 1860 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1861 struct p2p_go_neg_results *params, 1862 int group_formation) 1863 { 1864 struct wpa_ssid *ssid; 1865 1866 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1867 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1868 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1869 "results"); 1870 return; 1871 } 1872 1873 ssid = wpa_config_add_network(wpa_s->conf); 1874 if (ssid == NULL) { 1875 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1876 return; 1877 } 1878 1879 wpa_s->show_group_started = 0; 1880 wpa_s->p2p_go_group_formation_completed = 0; 1881 wpa_s->group_formation_reported = 0; 1882 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1883 1884 wpa_config_set_network_defaults(ssid); 1885 ssid->temporary = 1; 1886 ssid->p2p_group = 1; 1887 ssid->p2p_persistent_group = params->persistent_group; 1888 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1889 WPAS_MODE_P2P_GO; 1890 ssid->frequency = params->freq; 1891 ssid->ht40 = params->ht40; 1892 ssid->vht = params->vht; 1893 ssid->max_oper_chwidth = params->max_oper_chwidth; 1894 ssid->vht_center_freq2 = params->vht_center_freq2; 1895 ssid->ssid = os_zalloc(params->ssid_len + 1); 1896 if (ssid->ssid) { 1897 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1898 ssid->ssid_len = params->ssid_len; 1899 } 1900 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1901 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1902 ssid->proto = WPA_PROTO_RSN; 1903 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1904 ssid->group_cipher = WPA_CIPHER_CCMP; 1905 if (params->freq > 56160) { 1906 /* 1907 * Enable GCMP instead of CCMP as pairwise_cipher and 1908 * group_cipher in 60 GHz. 1909 */ 1910 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1911 ssid->group_cipher = WPA_CIPHER_GCMP; 1912 /* P2P GO in 60 GHz is always a PCP (PBSS) */ 1913 ssid->pbss = 1; 1914 } 1915 if (os_strlen(params->passphrase) > 0) { 1916 ssid->passphrase = os_strdup(params->passphrase); 1917 if (ssid->passphrase == NULL) { 1918 wpa_msg_global(wpa_s, MSG_ERROR, 1919 "P2P: Failed to copy passphrase for GO"); 1920 wpa_config_remove_network(wpa_s->conf, ssid->id); 1921 return; 1922 } 1923 } else 1924 ssid->passphrase = NULL; 1925 ssid->psk_set = params->psk_set; 1926 if (ssid->psk_set) 1927 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1928 else if (ssid->passphrase) 1929 wpa_config_update_psk(ssid); 1930 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity; 1931 1932 wpa_s->ap_configured_cb = p2p_go_configured; 1933 wpa_s->ap_configured_cb_ctx = wpa_s; 1934 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1935 wpa_s->scan_req = NORMAL_SCAN_REQ; 1936 wpa_s->connect_without_scan = ssid; 1937 wpa_s->reassociate = 1; 1938 wpa_s->disconnected = 0; 1939 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1940 "start GO)"); 1941 wpa_supplicant_req_scan(wpa_s, 0, 0); 1942 } 1943 1944 1945 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1946 const struct wpa_supplicant *src) 1947 { 1948 struct wpa_config *d; 1949 const struct wpa_config *s; 1950 1951 d = dst->conf; 1952 s = src->conf; 1953 1954 #define C(n) if (s->n) d->n = os_strdup(s->n) 1955 C(device_name); 1956 C(manufacturer); 1957 C(model_name); 1958 C(model_number); 1959 C(serial_number); 1960 C(config_methods); 1961 #undef C 1962 1963 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1964 os_memcpy(d->sec_device_type, s->sec_device_type, 1965 sizeof(d->sec_device_type)); 1966 d->num_sec_device_types = s->num_sec_device_types; 1967 1968 d->p2p_group_idle = s->p2p_group_idle; 1969 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 1970 d->p2p_intra_bss = s->p2p_intra_bss; 1971 d->persistent_reconnect = s->persistent_reconnect; 1972 d->max_num_sta = s->max_num_sta; 1973 d->pbc_in_m1 = s->pbc_in_m1; 1974 d->ignore_old_scan_res = s->ignore_old_scan_res; 1975 d->beacon_int = s->beacon_int; 1976 d->dtim_period = s->dtim_period; 1977 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 1978 d->disassoc_low_ack = s->disassoc_low_ack; 1979 d->disable_scan_offload = s->disable_scan_offload; 1980 d->passive_scan = s->passive_scan; 1981 1982 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) { 1983 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 1984 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 1985 } 1986 d->p2p_cli_probe = s->p2p_cli_probe; 1987 } 1988 1989 1990 static void wpas_p2p_clone_config_dh(struct wpa_supplicant *dst, 1991 const struct wpa_supplicant *src) 1992 { 1993 struct wpa_config *d; 1994 const struct wpa_config *s; 1995 1996 d = dst->conf; 1997 s = src->conf; 1998 1999 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey && 2000 !d->wps_nfc_dh_privkey && !d->wps_nfc_dh_pubkey) { 2001 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 2002 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 2003 } 2004 } 2005 2006 2007 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 2008 char *ifname, size_t len) 2009 { 2010 char *ifname_ptr = wpa_s->ifname; 2011 2012 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 2013 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 2014 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 2015 } 2016 2017 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 2018 if (os_strlen(ifname) >= IFNAMSIZ && 2019 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 2020 int res; 2021 2022 /* Try to avoid going over the IFNAMSIZ length limit */ 2023 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 2024 if (os_snprintf_error(len, res) && len) 2025 ifname[len - 1] = '\0'; 2026 } 2027 } 2028 2029 2030 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 2031 enum wpa_driver_if_type type) 2032 { 2033 char ifname[120], force_ifname[120]; 2034 2035 if (wpa_s->pending_interface_name[0]) { 2036 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 2037 "- skip creation of a new one"); 2038 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 2039 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 2040 "unknown?! ifname='%s'", 2041 wpa_s->pending_interface_name); 2042 return -1; 2043 } 2044 return 0; 2045 } 2046 2047 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 2048 force_ifname[0] = '\0'; 2049 2050 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 2051 ifname); 2052 wpa_s->p2p_group_idx++; 2053 2054 wpa_s->pending_interface_type = type; 2055 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 2056 wpa_s->pending_interface_addr, NULL) < 0) { 2057 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 2058 "interface"); 2059 return -1; 2060 } 2061 2062 if (force_ifname[0]) { 2063 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 2064 force_ifname); 2065 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 2066 sizeof(wpa_s->pending_interface_name)); 2067 } else 2068 os_strlcpy(wpa_s->pending_interface_name, ifname, 2069 sizeof(wpa_s->pending_interface_name)); 2070 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 2071 MACSTR, wpa_s->pending_interface_name, 2072 MAC2STR(wpa_s->pending_interface_addr)); 2073 2074 return 0; 2075 } 2076 2077 2078 static void wpas_p2p_remove_pending_group_interface( 2079 struct wpa_supplicant *wpa_s) 2080 { 2081 if (!wpa_s->pending_interface_name[0] || 2082 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2083 return; /* No pending virtual interface */ 2084 2085 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2086 wpa_s->pending_interface_name); 2087 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2088 wpa_s->pending_interface_name); 2089 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2090 wpa_s->pending_interface_name[0] = '\0'; 2091 wpa_s->global->pending_group_iface_for_p2ps = 0; 2092 } 2093 2094 2095 static struct wpa_supplicant * 2096 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2097 { 2098 struct wpa_interface iface; 2099 struct wpa_supplicant *group_wpa_s; 2100 2101 if (!wpa_s->pending_interface_name[0]) { 2102 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2103 if (!wpas_p2p_create_iface(wpa_s)) 2104 return NULL; 2105 /* 2106 * Something has forced us to remove the pending interface; try 2107 * to create a new one and hope for the best that we will get 2108 * the same local address. 2109 */ 2110 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2111 WPA_IF_P2P_CLIENT) < 0) 2112 return NULL; 2113 } 2114 2115 os_memset(&iface, 0, sizeof(iface)); 2116 iface.ifname = wpa_s->pending_interface_name; 2117 iface.driver = wpa_s->driver->name; 2118 if (wpa_s->conf->ctrl_interface == NULL && 2119 wpa_s->parent != wpa_s && 2120 wpa_s->p2p_mgmt && 2121 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2122 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2123 else 2124 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2125 iface.driver_param = wpa_s->conf->driver_param; 2126 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2127 if (group_wpa_s == NULL) { 2128 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2129 "wpa_supplicant interface"); 2130 return NULL; 2131 } 2132 wpa_s->pending_interface_name[0] = '\0'; 2133 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2134 P2P_GROUP_INTERFACE_CLIENT; 2135 wpa_s->global->p2p_group_formation = group_wpa_s; 2136 wpa_s->global->pending_group_iface_for_p2ps = 0; 2137 2138 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2139 2140 return group_wpa_s; 2141 } 2142 2143 2144 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2145 void *timeout_ctx) 2146 { 2147 struct wpa_supplicant *wpa_s = eloop_ctx; 2148 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2149 wpas_p2p_group_formation_failed(wpa_s, 0); 2150 } 2151 2152 2153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2154 int already_deleted) 2155 { 2156 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2157 wpa_s->p2pdev, NULL); 2158 if (wpa_s->global->p2p) 2159 p2p_group_formation_failed(wpa_s->global->p2p); 2160 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2161 } 2162 2163 2164 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2165 { 2166 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2167 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2168 wpa_s->p2pdev, NULL); 2169 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2170 wpa_s->p2pdev, NULL); 2171 wpa_s->global->p2p_fail_on_wps_complete = 0; 2172 } 2173 2174 2175 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2176 { 2177 if (wpa_s->global->p2p_group_formation != wpa_s) 2178 return; 2179 /* Speed up group formation timeout since this cannot succeed */ 2180 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2181 wpa_s->p2pdev, NULL); 2182 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2183 wpa_s->p2pdev, NULL); 2184 } 2185 2186 2187 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2188 { 2189 struct wpa_supplicant *wpa_s = ctx; 2190 struct wpa_supplicant *group_wpa_s; 2191 2192 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2193 wpa_drv_cancel_remain_on_channel(wpa_s); 2194 wpa_s->off_channel_freq = 0; 2195 wpa_s->roc_waiting_drv_freq = 0; 2196 } 2197 2198 if (res->status) { 2199 wpa_msg_global(wpa_s, MSG_INFO, 2200 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2201 res->status); 2202 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2203 wpas_p2p_remove_pending_group_interface(wpa_s); 2204 return; 2205 } 2206 2207 if (!res->role_go) { 2208 /* Inform driver of the operating channel of GO. */ 2209 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2210 } 2211 2212 if (wpa_s->p2p_go_ht40) 2213 res->ht40 = 1; 2214 if (wpa_s->p2p_go_vht) 2215 res->vht = 1; 2216 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2217 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2218 2219 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2220 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2221 " wps_method=%s", 2222 res->role_go ? "GO" : "client", res->freq, res->ht40, 2223 MAC2STR(res->peer_device_addr), 2224 MAC2STR(res->peer_interface_addr), 2225 p2p_wps_method_text(res->wps_method)); 2226 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2227 2228 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2229 struct wpa_ssid *ssid; 2230 ssid = wpa_config_get_network(wpa_s->conf, 2231 wpa_s->p2p_persistent_id); 2232 if (ssid && ssid->disabled == 2 && 2233 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2234 size_t len = os_strlen(ssid->passphrase); 2235 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2236 "on requested persistent group"); 2237 os_memcpy(res->passphrase, ssid->passphrase, len); 2238 res->passphrase[len] = '\0'; 2239 } 2240 } 2241 2242 if (wpa_s->create_p2p_iface) { 2243 group_wpa_s = 2244 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2245 if (group_wpa_s == NULL) { 2246 wpas_p2p_remove_pending_group_interface(wpa_s); 2247 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2248 wpa_s, NULL); 2249 wpas_p2p_group_formation_failed(wpa_s, 1); 2250 return; 2251 } 2252 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2253 wpa_s->pending_interface_name[0] = '\0'; 2254 } else { 2255 group_wpa_s = wpa_s->parent; 2256 wpa_s->global->p2p_group_formation = group_wpa_s; 2257 if (group_wpa_s != wpa_s) 2258 wpas_p2p_clone_config_dh(group_wpa_s, wpa_s); 2259 } 2260 2261 group_wpa_s->p2p_in_provisioning = 1; 2262 group_wpa_s->p2pdev = wpa_s; 2263 if (group_wpa_s != wpa_s) { 2264 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2265 sizeof(group_wpa_s->p2p_pin)); 2266 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2267 } 2268 if (res->role_go) { 2269 wpas_start_wps_go(group_wpa_s, res, 1); 2270 } else { 2271 os_get_reltime(&group_wpa_s->scan_min_time); 2272 wpas_start_wps_enrollee(group_wpa_s, res); 2273 } 2274 2275 wpa_s->p2p_long_listen = 0; 2276 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2277 2278 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2279 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2280 (res->peer_config_timeout % 100) * 10000, 2281 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2282 } 2283 2284 2285 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2286 u8 go_intent) 2287 { 2288 struct wpa_supplicant *wpa_s = ctx; 2289 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2290 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2291 dev_passwd_id, go_intent); 2292 2293 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2294 } 2295 2296 2297 static void wpas_dev_found(void *ctx, const u8 *addr, 2298 const struct p2p_peer_info *info, 2299 int new_device) 2300 { 2301 #ifndef CONFIG_NO_STDOUT_DEBUG 2302 struct wpa_supplicant *wpa_s = ctx; 2303 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2304 char *wfd_dev_info_hex = NULL; 2305 2306 #ifdef CONFIG_WIFI_DISPLAY 2307 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2308 WFD_SUBELEM_DEVICE_INFO); 2309 #endif /* CONFIG_WIFI_DISPLAY */ 2310 2311 if (info->p2ps_instance) { 2312 char str[256]; 2313 const u8 *buf = wpabuf_head(info->p2ps_instance); 2314 size_t len = wpabuf_len(info->p2ps_instance); 2315 2316 while (len) { 2317 u32 id; 2318 u16 methods; 2319 u8 str_len; 2320 2321 if (len < 4 + 2 + 1) 2322 break; 2323 id = WPA_GET_LE32(buf); 2324 buf += sizeof(u32); 2325 methods = WPA_GET_BE16(buf); 2326 buf += sizeof(u16); 2327 str_len = *buf++; 2328 if (str_len > len - 4 - 2 - 1) 2329 break; 2330 os_memcpy(str, buf, str_len); 2331 str[str_len] = '\0'; 2332 buf += str_len; 2333 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2334 2335 wpa_msg_global(wpa_s, MSG_INFO, 2336 P2P_EVENT_DEVICE_FOUND MACSTR 2337 " p2p_dev_addr=" MACSTR 2338 " pri_dev_type=%s name='%s'" 2339 " config_methods=0x%x" 2340 " dev_capab=0x%x" 2341 " group_capab=0x%x" 2342 " adv_id=%x asp_svc=%s%s", 2343 MAC2STR(addr), 2344 MAC2STR(info->p2p_device_addr), 2345 wps_dev_type_bin2str( 2346 info->pri_dev_type, 2347 devtype, sizeof(devtype)), 2348 info->device_name, methods, 2349 info->dev_capab, info->group_capab, 2350 id, str, 2351 info->vendor_elems ? 2352 " vendor_elems=1" : ""); 2353 } 2354 goto done; 2355 } 2356 2357 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2358 " p2p_dev_addr=" MACSTR 2359 " pri_dev_type=%s name='%s' config_methods=0x%x " 2360 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2361 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2362 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2363 sizeof(devtype)), 2364 info->device_name, info->config_methods, 2365 info->dev_capab, info->group_capab, 2366 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2367 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2368 info->vendor_elems ? " vendor_elems=1" : "", 2369 new_device); 2370 2371 done: 2372 os_free(wfd_dev_info_hex); 2373 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2374 2375 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2376 } 2377 2378 2379 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2380 { 2381 struct wpa_supplicant *wpa_s = ctx; 2382 2383 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2384 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2385 2386 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2387 } 2388 2389 2390 static void wpas_find_stopped(void *ctx) 2391 { 2392 struct wpa_supplicant *wpa_s = ctx; 2393 2394 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0) 2395 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed"); 2396 2397 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2398 wpas_notify_p2p_find_stopped(wpa_s); 2399 } 2400 2401 2402 struct wpas_p2p_listen_work { 2403 unsigned int freq; 2404 unsigned int duration; 2405 struct wpabuf *probe_resp_ie; 2406 }; 2407 2408 2409 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2410 { 2411 if (lwork == NULL) 2412 return; 2413 wpabuf_free(lwork->probe_resp_ie); 2414 os_free(lwork); 2415 } 2416 2417 2418 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2419 { 2420 struct wpas_p2p_listen_work *lwork; 2421 2422 if (!wpa_s->p2p_listen_work) 2423 return; 2424 2425 lwork = wpa_s->p2p_listen_work->ctx; 2426 wpas_p2p_listen_work_free(lwork); 2427 radio_work_done(wpa_s->p2p_listen_work); 2428 wpa_s->p2p_listen_work = NULL; 2429 } 2430 2431 2432 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2433 { 2434 struct wpa_supplicant *wpa_s = work->wpa_s; 2435 struct wpas_p2p_listen_work *lwork = work->ctx; 2436 unsigned int duration; 2437 2438 if (deinit) { 2439 if (work->started) { 2440 wpa_s->p2p_listen_work = NULL; 2441 wpas_stop_listen(wpa_s); 2442 } 2443 wpas_p2p_listen_work_free(lwork); 2444 return; 2445 } 2446 2447 wpa_s->p2p_listen_work = work; 2448 2449 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2450 2451 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2452 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2453 "report received Probe Request frames"); 2454 wpas_p2p_listen_work_done(wpa_s); 2455 return; 2456 } 2457 2458 wpa_s->pending_listen_freq = lwork->freq; 2459 wpa_s->pending_listen_duration = lwork->duration; 2460 2461 duration = lwork->duration; 2462 #ifdef CONFIG_TESTING_OPTIONS 2463 if (wpa_s->extra_roc_dur) { 2464 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2465 duration, duration + wpa_s->extra_roc_dur); 2466 duration += wpa_s->extra_roc_dur; 2467 } 2468 #endif /* CONFIG_TESTING_OPTIONS */ 2469 2470 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2471 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2472 "to remain on channel (%u MHz) for Listen " 2473 "state", lwork->freq); 2474 wpas_p2p_listen_work_done(wpa_s); 2475 wpa_s->pending_listen_freq = 0; 2476 return; 2477 } 2478 wpa_s->off_channel_freq = 0; 2479 wpa_s->roc_waiting_drv_freq = lwork->freq; 2480 } 2481 2482 2483 static int wpas_start_listen(void *ctx, unsigned int freq, 2484 unsigned int duration, 2485 const struct wpabuf *probe_resp_ie) 2486 { 2487 struct wpa_supplicant *wpa_s = ctx; 2488 struct wpas_p2p_listen_work *lwork; 2489 2490 if (wpa_s->p2p_listen_work) { 2491 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2492 return -1; 2493 } 2494 2495 lwork = os_zalloc(sizeof(*lwork)); 2496 if (lwork == NULL) 2497 return -1; 2498 lwork->freq = freq; 2499 lwork->duration = duration; 2500 if (probe_resp_ie) { 2501 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2502 if (lwork->probe_resp_ie == NULL) { 2503 wpas_p2p_listen_work_free(lwork); 2504 return -1; 2505 } 2506 } 2507 2508 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2509 lwork) < 0) { 2510 wpas_p2p_listen_work_free(lwork); 2511 return -1; 2512 } 2513 2514 return 0; 2515 } 2516 2517 2518 static void wpas_stop_listen(void *ctx) 2519 { 2520 struct wpa_supplicant *wpa_s = ctx; 2521 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2522 wpa_drv_cancel_remain_on_channel(wpa_s); 2523 wpa_s->off_channel_freq = 0; 2524 wpa_s->roc_waiting_drv_freq = 0; 2525 } 2526 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2527 2528 /* 2529 * Don't cancel Probe Request RX reporting for a connected P2P Client 2530 * handling Probe Request frames. 2531 */ 2532 if (!wpa_s->p2p_cli_probe) 2533 wpa_drv_probe_req_report(wpa_s, 0); 2534 2535 wpas_p2p_listen_work_done(wpa_s); 2536 } 2537 2538 2539 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2540 unsigned int freq) 2541 { 2542 struct wpa_supplicant *wpa_s = ctx; 2543 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2544 freq); 2545 } 2546 2547 2548 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2549 const u8 *peer, const char *params, 2550 unsigned int generated_pin) 2551 { 2552 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2553 " %08d%s", MAC2STR(peer), generated_pin, params); 2554 } 2555 2556 2557 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2558 const u8 *peer, const char *params) 2559 { 2560 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2561 "%s", MAC2STR(peer), params); 2562 } 2563 2564 2565 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2566 const u8 *dev_addr, const u8 *pri_dev_type, 2567 const char *dev_name, u16 supp_config_methods, 2568 u8 dev_capab, u8 group_capab, const u8 *group_id, 2569 size_t group_id_len) 2570 { 2571 struct wpa_supplicant *wpa_s = ctx; 2572 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2573 char params[300]; 2574 u8 empty_dev_type[8]; 2575 unsigned int generated_pin = 0; 2576 struct wpa_supplicant *group = NULL; 2577 int res; 2578 2579 if (group_id) { 2580 for (group = wpa_s->global->ifaces; group; group = group->next) 2581 { 2582 struct wpa_ssid *s = group->current_ssid; 2583 if (s != NULL && 2584 s->mode == WPAS_MODE_P2P_GO && 2585 group_id_len - ETH_ALEN == s->ssid_len && 2586 os_memcmp(group_id + ETH_ALEN, s->ssid, 2587 s->ssid_len) == 0) 2588 break; 2589 } 2590 } 2591 2592 if (pri_dev_type == NULL) { 2593 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2594 pri_dev_type = empty_dev_type; 2595 } 2596 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2597 " pri_dev_type=%s name='%s' config_methods=0x%x " 2598 "dev_capab=0x%x group_capab=0x%x%s%s", 2599 MAC2STR(dev_addr), 2600 wps_dev_type_bin2str(pri_dev_type, devtype, 2601 sizeof(devtype)), 2602 dev_name, supp_config_methods, dev_capab, group_capab, 2603 group ? " group=" : "", 2604 group ? group->ifname : ""); 2605 if (os_snprintf_error(sizeof(params), res)) 2606 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2607 params[sizeof(params) - 1] = '\0'; 2608 2609 if (config_methods & WPS_CONFIG_DISPLAY) { 2610 if (wps_generate_pin(&generated_pin) < 0) { 2611 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2612 wpas_notify_p2p_provision_discovery( 2613 wpa_s, peer, 0 /* response */, 2614 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2615 return; 2616 } 2617 wpas_prov_disc_local_display(wpa_s, peer, params, 2618 generated_pin); 2619 } else if (config_methods & WPS_CONFIG_KEYPAD) 2620 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2621 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2622 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2623 MACSTR "%s", MAC2STR(peer), params); 2624 2625 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2626 P2P_PROV_DISC_SUCCESS, 2627 config_methods, generated_pin); 2628 } 2629 2630 2631 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2632 { 2633 struct wpa_supplicant *wpa_s = ctx; 2634 unsigned int generated_pin = 0; 2635 char params[20]; 2636 2637 if (wpa_s->pending_pd_before_join && 2638 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2639 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2640 wpa_s->pending_pd_before_join = 0; 2641 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2642 "join-existing-group operation"); 2643 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2644 return; 2645 } 2646 2647 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2648 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2649 int res; 2650 2651 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2652 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2653 if (os_snprintf_error(sizeof(params), res)) 2654 params[sizeof(params) - 1] = '\0'; 2655 } else 2656 params[0] = '\0'; 2657 2658 if (config_methods & WPS_CONFIG_DISPLAY) 2659 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2660 else if (config_methods & WPS_CONFIG_KEYPAD) { 2661 if (wps_generate_pin(&generated_pin) < 0) { 2662 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2663 wpas_notify_p2p_provision_discovery( 2664 wpa_s, peer, 0 /* response */, 2665 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2666 return; 2667 } 2668 wpas_prov_disc_local_display(wpa_s, peer, params, 2669 generated_pin); 2670 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2671 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2672 MACSTR "%s", MAC2STR(peer), params); 2673 2674 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2675 P2P_PROV_DISC_SUCCESS, 2676 config_methods, generated_pin); 2677 } 2678 2679 2680 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2681 enum p2p_prov_disc_status status, 2682 u32 adv_id, const u8 *adv_mac, 2683 const char *deferred_session_resp) 2684 { 2685 struct wpa_supplicant *wpa_s = ctx; 2686 2687 if (wpa_s->p2p_fallback_to_go_neg) { 2688 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2689 "failed - fall back to GO Negotiation"); 2690 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 2691 P2P_EVENT_FALLBACK_TO_GO_NEG 2692 "reason=PD-failed"); 2693 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2694 return; 2695 } 2696 2697 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2698 wpa_s->pending_pd_before_join = 0; 2699 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2700 "join-existing-group operation (no ACK for PD " 2701 "Req attempts)"); 2702 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2703 return; 2704 } 2705 2706 if (adv_id && adv_mac && deferred_session_resp) { 2707 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2708 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2709 " deferred_session_resp='%s'", 2710 MAC2STR(peer), status, adv_id, 2711 deferred_session_resp); 2712 } else if (adv_id && adv_mac) { 2713 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2714 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2715 MAC2STR(peer), status, adv_id); 2716 } else { 2717 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2718 " p2p_dev_addr=" MACSTR " status=%d", 2719 MAC2STR(peer), status); 2720 } 2721 2722 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2723 status, 0, 0); 2724 } 2725 2726 2727 static int freq_included(struct wpa_supplicant *wpa_s, 2728 const struct p2p_channels *channels, 2729 unsigned int freq) 2730 { 2731 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2732 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2733 return 1; 2734 return 0; 2735 } 2736 2737 2738 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2739 { 2740 unsigned int num = P2P_MAX_CHANNELS; 2741 int *common_freqs; 2742 int ret; 2743 2744 p2p_go_dump_common_freqs(wpa_s); 2745 common_freqs = os_calloc(num, sizeof(int)); 2746 if (!common_freqs) 2747 return; 2748 2749 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2750 if (ret < 0) { 2751 wpa_dbg(wpa_s, MSG_DEBUG, 2752 "P2P: Failed to get group common freqs"); 2753 os_free(common_freqs); 2754 return; 2755 } 2756 2757 os_free(wpa_s->p2p_group_common_freqs); 2758 wpa_s->p2p_group_common_freqs = common_freqs; 2759 wpa_s->p2p_group_common_freqs_num = num; 2760 p2p_go_dump_common_freqs(wpa_s); 2761 } 2762 2763 2764 /* 2765 * Check if the given frequency is one of the possible operating frequencies 2766 * set after the completion of the GO Negotiation. 2767 */ 2768 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2769 { 2770 unsigned int i; 2771 2772 p2p_go_dump_common_freqs(wpa_s); 2773 2774 /* assume no restrictions */ 2775 if (!wpa_s->p2p_group_common_freqs_num) 2776 return 1; 2777 2778 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2779 if (wpa_s->p2p_group_common_freqs[i] == freq) 2780 return 1; 2781 } 2782 return 0; 2783 } 2784 2785 2786 static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2787 struct sta_info *sta, void *ctx) 2788 { 2789 int *ecsa_support = ctx; 2790 2791 *ecsa_support &= sta->ecsa_supported; 2792 2793 return 0; 2794 } 2795 2796 2797 /* Check if all the peers support eCSA */ 2798 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2799 { 2800 int ecsa_support = 1; 2801 2802 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2803 &ecsa_support); 2804 2805 return ecsa_support; 2806 } 2807 2808 2809 /** 2810 * Pick the best frequency to use from all the currently used frequencies. 2811 */ 2812 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2813 struct wpa_used_freq_data *freqs, 2814 unsigned int num) 2815 { 2816 unsigned int i, c; 2817 2818 /* find a candidate freq that is supported by P2P */ 2819 for (c = 0; c < num; c++) 2820 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2821 break; 2822 2823 if (c == num) 2824 return 0; 2825 2826 /* once we have a candidate, try to find a 'better' one */ 2827 for (i = c + 1; i < num; i++) { 2828 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2829 continue; 2830 2831 /* 2832 * 1. Infrastructure station interfaces have higher preference. 2833 * 2. P2P Clients have higher preference. 2834 * 3. All others. 2835 */ 2836 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2837 c = i; 2838 break; 2839 } 2840 2841 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2842 c = i; 2843 } 2844 return freqs[c].freq; 2845 } 2846 2847 2848 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2849 const u8 *go_dev_addr, const u8 *ssid, 2850 size_t ssid_len, int *go, u8 *group_bssid, 2851 int *force_freq, int persistent_group, 2852 const struct p2p_channels *channels, 2853 int dev_pw_id) 2854 { 2855 struct wpa_supplicant *wpa_s = ctx; 2856 struct wpa_ssid *s; 2857 struct wpa_used_freq_data *freqs; 2858 struct wpa_supplicant *grp; 2859 int best_freq; 2860 2861 if (!persistent_group) { 2862 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2863 " to join an active group (SSID: %s)", 2864 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2865 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2866 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2867 == 0 || 2868 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2869 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2870 "authorized invitation"); 2871 goto accept_inv; 2872 } 2873 2874 #ifdef CONFIG_WPS_NFC 2875 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2876 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2877 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2878 wpa_s->p2p_wps_method = WPS_NFC; 2879 wpa_s->pending_join_wps_method = WPS_NFC; 2880 os_memcpy(wpa_s->pending_join_dev_addr, 2881 go_dev_addr, ETH_ALEN); 2882 os_memcpy(wpa_s->pending_join_iface_addr, 2883 bssid, ETH_ALEN); 2884 goto accept_inv; 2885 } 2886 #endif /* CONFIG_WPS_NFC */ 2887 2888 /* 2889 * Do not accept the invitation automatically; notify user and 2890 * request approval. 2891 */ 2892 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2893 } 2894 2895 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2896 if (grp) { 2897 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2898 "running persistent group"); 2899 if (*go) 2900 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2901 goto accept_inv; 2902 } 2903 2904 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2905 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2906 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2907 "invitation to re-invoke a persistent group"); 2908 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2909 } else if (!wpa_s->conf->persistent_reconnect) 2910 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2911 2912 for (s = wpa_s->conf->ssid; s; s = s->next) { 2913 if (s->disabled == 2 && 2914 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2915 s->ssid_len == ssid_len && 2916 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2917 break; 2918 } 2919 2920 if (!s) { 2921 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2922 " requested reinvocation of an unknown group", 2923 MAC2STR(sa)); 2924 return P2P_SC_FAIL_UNKNOWN_GROUP; 2925 } 2926 2927 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2928 *go = 1; 2929 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2930 wpa_printf(MSG_DEBUG, "P2P: The only available " 2931 "interface is already in use - reject " 2932 "invitation"); 2933 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2934 } 2935 if (wpa_s->p2p_mgmt) 2936 os_memcpy(group_bssid, wpa_s->parent->own_addr, 2937 ETH_ALEN); 2938 else 2939 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2940 } else if (s->mode == WPAS_MODE_P2P_GO) { 2941 *go = 1; 2942 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2943 { 2944 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2945 "interface address for the group"); 2946 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2947 } 2948 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2949 ETH_ALEN); 2950 } 2951 2952 accept_inv: 2953 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2954 2955 best_freq = 0; 2956 freqs = os_calloc(wpa_s->num_multichan_concurrent, 2957 sizeof(struct wpa_used_freq_data)); 2958 if (freqs) { 2959 int num_channels = wpa_s->num_multichan_concurrent; 2960 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 2961 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 2962 os_free(freqs); 2963 } 2964 2965 /* Get one of the frequencies currently in use */ 2966 if (best_freq > 0) { 2967 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 2968 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 2969 2970 if (wpa_s->num_multichan_concurrent < 2 || 2971 wpas_p2p_num_unused_channels(wpa_s) < 1) { 2972 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 2973 *force_freq = best_freq; 2974 } 2975 } 2976 2977 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 2978 wpas_p2p_num_unused_channels(wpa_s) > 0) { 2979 if (*go == 0) { 2980 /* We are the client */ 2981 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 2982 "running a GO but we are capable of MCC, " 2983 "figure out the best channel to use"); 2984 *force_freq = 0; 2985 } else if (!freq_included(wpa_s, channels, *force_freq)) { 2986 /* We are the GO, and *force_freq is not in the 2987 * intersection */ 2988 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 2989 "in intersection but we are capable of MCC, " 2990 "figure out the best channel to use", 2991 *force_freq); 2992 *force_freq = 0; 2993 } 2994 } 2995 2996 return P2P_SC_SUCCESS; 2997 } 2998 2999 3000 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3001 const u8 *ssid, size_t ssid_len, 3002 const u8 *go_dev_addr, u8 status, 3003 int op_freq) 3004 { 3005 struct wpa_supplicant *wpa_s = ctx; 3006 struct wpa_ssid *s; 3007 3008 for (s = wpa_s->conf->ssid; s; s = s->next) { 3009 if (s->disabled == 2 && 3010 s->ssid_len == ssid_len && 3011 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3012 break; 3013 } 3014 3015 if (status == P2P_SC_SUCCESS) { 3016 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3017 " was accepted; op_freq=%d MHz, SSID=%s", 3018 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3019 if (s) { 3020 int go = s->mode == WPAS_MODE_P2P_GO; 3021 wpas_p2p_group_add_persistent( 3022 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL, 3023 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 3024 1); 3025 } else if (bssid) { 3026 wpa_s->user_initiated_pd = 0; 3027 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3028 wpa_s->p2p_wps_method, 0, op_freq, 3029 ssid, ssid_len); 3030 } 3031 return; 3032 } 3033 3034 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3035 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3036 " was rejected (status %u)", MAC2STR(sa), status); 3037 return; 3038 } 3039 3040 if (!s) { 3041 if (bssid) { 3042 wpa_msg_global(wpa_s, MSG_INFO, 3043 P2P_EVENT_INVITATION_RECEIVED 3044 "sa=" MACSTR " go_dev_addr=" MACSTR 3045 " bssid=" MACSTR " unknown-network", 3046 MAC2STR(sa), MAC2STR(go_dev_addr), 3047 MAC2STR(bssid)); 3048 } else { 3049 wpa_msg_global(wpa_s, MSG_INFO, 3050 P2P_EVENT_INVITATION_RECEIVED 3051 "sa=" MACSTR " go_dev_addr=" MACSTR 3052 " unknown-network", 3053 MAC2STR(sa), MAC2STR(go_dev_addr)); 3054 } 3055 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3056 bssid, 0, op_freq); 3057 return; 3058 } 3059 3060 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3061 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3062 "sa=" MACSTR " persistent=%d freq=%d", 3063 MAC2STR(sa), s->id, op_freq); 3064 } else { 3065 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3066 "sa=" MACSTR " persistent=%d", 3067 MAC2STR(sa), s->id); 3068 } 3069 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3070 s->id, op_freq); 3071 } 3072 3073 3074 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3075 struct wpa_ssid *ssid, 3076 const u8 *peer, int inv) 3077 { 3078 size_t i; 3079 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3080 3081 if (ssid == NULL) 3082 return; 3083 3084 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3085 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3086 ETH_ALEN) == 0) 3087 break; 3088 } 3089 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3090 if (ssid->mode != WPAS_MODE_P2P_GO && 3091 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3092 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3093 "due to invitation result", ssid->id); 3094 wpas_notify_network_removed(wpa_s, ssid); 3095 wpa_config_remove_network(wpa_s->conf, ssid->id); 3096 return; 3097 } 3098 return; /* Peer not found in client list */ 3099 } 3100 3101 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3102 "group %d client list%s", 3103 MAC2STR(peer), ssid->id, 3104 inv ? " due to invitation result" : ""); 3105 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3106 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3107 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3108 ssid->num_p2p_clients--; 3109 if (p2p_wpa_s->conf->update_config && 3110 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3111 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3112 } 3113 3114 3115 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3116 const u8 *peer) 3117 { 3118 struct wpa_ssid *ssid; 3119 3120 wpa_s = wpa_s->global->p2p_invite_group; 3121 if (wpa_s == NULL) 3122 return; /* No known invitation group */ 3123 ssid = wpa_s->current_ssid; 3124 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3125 !ssid->p2p_persistent_group) 3126 return; /* Not operating as a GO in persistent group */ 3127 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer, 3128 ssid->ssid, ssid->ssid_len); 3129 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3130 } 3131 3132 3133 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3134 const struct p2p_channels *channels, 3135 const u8 *peer, int neg_freq, 3136 int peer_oper_freq) 3137 { 3138 struct wpa_supplicant *wpa_s = ctx; 3139 struct wpa_ssid *ssid; 3140 int freq; 3141 3142 if (bssid) { 3143 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3144 "status=%d " MACSTR, 3145 status, MAC2STR(bssid)); 3146 } else { 3147 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3148 "status=%d ", status); 3149 } 3150 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3151 3152 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3153 status, MAC2STR(peer)); 3154 if (wpa_s->pending_invite_ssid_id == -1) { 3155 struct wpa_supplicant *group_if = 3156 wpa_s->global->p2p_invite_group; 3157 3158 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3159 wpas_remove_persistent_client(wpa_s, peer); 3160 3161 /* 3162 * Invitation to an active group. If this is successful and we 3163 * are the GO, set the client wait to postpone some concurrent 3164 * operations and to allow provisioning and connection to happen 3165 * more quickly. 3166 */ 3167 if (status == P2P_SC_SUCCESS && 3168 group_if && group_if->current_ssid && 3169 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3170 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3171 #ifdef CONFIG_TESTING_OPTIONS 3172 if (group_if->p2p_go_csa_on_inv) { 3173 wpa_printf(MSG_DEBUG, 3174 "Testing: force P2P GO CSA after invitation"); 3175 eloop_cancel_timeout( 3176 wpas_p2p_reconsider_moving_go, 3177 wpa_s, NULL); 3178 eloop_register_timeout( 3179 0, 50000, 3180 wpas_p2p_reconsider_moving_go, 3181 wpa_s, NULL); 3182 } 3183 #endif /* CONFIG_TESTING_OPTIONS */ 3184 } 3185 return; 3186 } 3187 3188 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3189 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3190 "invitation exchange to indicate readiness for " 3191 "re-invocation"); 3192 } 3193 3194 if (status != P2P_SC_SUCCESS) { 3195 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3196 ssid = wpa_config_get_network( 3197 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3198 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3199 } 3200 wpas_p2p_remove_pending_group_interface(wpa_s); 3201 return; 3202 } 3203 3204 ssid = wpa_config_get_network(wpa_s->conf, 3205 wpa_s->pending_invite_ssid_id); 3206 if (ssid == NULL) { 3207 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3208 "data matching with invitation"); 3209 return; 3210 } 3211 3212 /* 3213 * The peer could have missed our ctrl::ack frame for Invitation 3214 * Response and continue retransmitting the frame. To reduce the 3215 * likelihood of the peer not getting successful TX status for the 3216 * Invitation Response frame, wait a short time here before starting 3217 * the persistent group so that we will remain on the current channel to 3218 * acknowledge any possible retransmission from the peer. 3219 */ 3220 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3221 "starting persistent group"); 3222 os_sleep(0, 50000); 3223 3224 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3225 freq_included(wpa_s, channels, neg_freq)) 3226 freq = neg_freq; 3227 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3228 freq_included(wpa_s, channels, peer_oper_freq)) 3229 freq = peer_oper_freq; 3230 else 3231 freq = 0; 3232 3233 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3234 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3235 wpas_p2p_group_add_persistent(wpa_s, ssid, 3236 ssid->mode == WPAS_MODE_P2P_GO, 3237 wpa_s->p2p_persistent_go_freq, 3238 freq, 3239 wpa_s->p2p_go_vht_center_freq2, 3240 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3241 wpa_s->p2p_go_max_oper_chwidth, 3242 channels, 3243 ssid->mode == WPAS_MODE_P2P_GO ? 3244 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3245 0, 1); 3246 } 3247 3248 3249 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3250 unsigned int freq) 3251 { 3252 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3253 return 1; 3254 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3255 } 3256 3257 3258 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3259 { 3260 reg->channel[reg->channels] = chan; 3261 reg->channels++; 3262 } 3263 3264 3265 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3266 struct p2p_channels *chan, 3267 struct p2p_channels *cli_chan) 3268 { 3269 int i, cla = 0; 3270 3271 wpa_s->global->p2p_24ghz_social_channels = 1; 3272 3273 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3274 3275 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3276 "band"); 3277 3278 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3279 chan->reg_class[cla].reg_class = 81; 3280 chan->reg_class[cla].channels = 0; 3281 for (i = 0; i < 11; i++) { 3282 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3283 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3284 } 3285 if (chan->reg_class[cla].channels) 3286 cla++; 3287 3288 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3289 "band"); 3290 3291 /* Operating class 115 - 5 GHz, channels 36-48 */ 3292 chan->reg_class[cla].reg_class = 115; 3293 chan->reg_class[cla].channels = 0; 3294 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3295 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3296 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3297 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3298 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3299 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3300 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3301 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3302 if (chan->reg_class[cla].channels) 3303 cla++; 3304 3305 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3306 "band"); 3307 3308 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3309 chan->reg_class[cla].reg_class = 124; 3310 chan->reg_class[cla].channels = 0; 3311 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3312 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3313 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3314 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3315 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3316 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3318 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3319 if (chan->reg_class[cla].channels) 3320 cla++; 3321 3322 chan->reg_classes = cla; 3323 return 0; 3324 } 3325 3326 3327 enum chan_allowed { 3328 NOT_ALLOWED, NO_IR, ALLOWED 3329 }; 3330 3331 static int has_channel(struct wpa_global *global, 3332 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3333 { 3334 int i; 3335 unsigned int freq; 3336 3337 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3338 chan * 5; 3339 if (wpas_p2p_disallowed_freq(global, freq)) 3340 return NOT_ALLOWED; 3341 3342 for (i = 0; i < mode->num_channels; i++) { 3343 if (mode->channels[i].chan == chan) { 3344 if (flags) 3345 *flags = mode->channels[i].flag; 3346 if (mode->channels[i].flag & 3347 (HOSTAPD_CHAN_DISABLED | 3348 HOSTAPD_CHAN_RADAR)) 3349 return NOT_ALLOWED; 3350 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3351 return NO_IR; 3352 return ALLOWED; 3353 } 3354 } 3355 3356 return NOT_ALLOWED; 3357 } 3358 3359 3360 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3361 struct hostapd_hw_modes *mode, 3362 u8 channel) 3363 { 3364 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3365 unsigned int i; 3366 3367 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3368 return 0; 3369 3370 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3371 /* 3372 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3373 * so the center channel is 6 channels away from the start/end. 3374 */ 3375 if (channel >= center_channels[i] - 6 && 3376 channel <= center_channels[i] + 6) 3377 return center_channels[i]; 3378 3379 return 0; 3380 } 3381 3382 3383 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3384 struct hostapd_hw_modes *mode, 3385 u8 channel, u8 bw) 3386 { 3387 u8 center_chan; 3388 int i, flags; 3389 enum chan_allowed res, ret = ALLOWED; 3390 3391 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3392 if (!center_chan) 3393 return NOT_ALLOWED; 3394 if (center_chan >= 58 && center_chan <= 138) 3395 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3396 3397 /* check all the channels are available */ 3398 for (i = 0; i < 4; i++) { 3399 int adj_chan = center_chan - 6 + i * 4; 3400 3401 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3402 if (res == NOT_ALLOWED) 3403 return NOT_ALLOWED; 3404 if (res == NO_IR) 3405 ret = NO_IR; 3406 3407 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3408 return NOT_ALLOWED; 3409 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3410 return NOT_ALLOWED; 3411 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3412 return NOT_ALLOWED; 3413 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3414 return NOT_ALLOWED; 3415 } 3416 3417 return ret; 3418 } 3419 3420 3421 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3422 struct hostapd_hw_modes *mode, 3423 u8 channel) 3424 { 3425 u8 center_channels[] = { 50, 114 }; 3426 unsigned int i; 3427 3428 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3429 return 0; 3430 3431 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3432 /* 3433 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3434 * so the center channel is 14 channels away from the start/end. 3435 */ 3436 if (channel >= center_channels[i] - 14 && 3437 channel <= center_channels[i] + 14) 3438 return center_channels[i]; 3439 3440 return 0; 3441 } 3442 3443 3444 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3445 struct hostapd_hw_modes *mode, 3446 u8 channel, u8 bw) 3447 { 3448 u8 center_chan; 3449 int i, flags; 3450 enum chan_allowed res, ret = ALLOWED; 3451 3452 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3453 if (!center_chan) 3454 return NOT_ALLOWED; 3455 /* VHT 160 MHz uses DFS channels in most countries. */ 3456 3457 /* Check all the channels are available */ 3458 for (i = 0; i < 8; i++) { 3459 int adj_chan = center_chan - 14 + i * 4; 3460 3461 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3462 if (res == NOT_ALLOWED) 3463 return NOT_ALLOWED; 3464 3465 if (res == NO_IR) 3466 ret = NO_IR; 3467 3468 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3469 return NOT_ALLOWED; 3470 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3471 return NOT_ALLOWED; 3472 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3473 return NOT_ALLOWED; 3474 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3475 return NOT_ALLOWED; 3476 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3477 return NOT_ALLOWED; 3478 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3479 return NOT_ALLOWED; 3480 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3481 return NOT_ALLOWED; 3482 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3483 return NOT_ALLOWED; 3484 } 3485 3486 return ret; 3487 } 3488 3489 3490 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3491 struct hostapd_hw_modes *mode, 3492 u8 channel, u8 bw) 3493 { 3494 int flag = 0; 3495 enum chan_allowed res, res2; 3496 3497 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3498 if (bw == BW40MINUS) { 3499 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3500 return NOT_ALLOWED; 3501 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3502 } else if (bw == BW40PLUS) { 3503 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3504 return NOT_ALLOWED; 3505 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3506 } else if (bw == BW80) { 3507 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3508 } else if (bw == BW160) { 3509 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3510 } 3511 3512 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3513 return NOT_ALLOWED; 3514 if (res == NO_IR || res2 == NO_IR) 3515 return NO_IR; 3516 return res; 3517 } 3518 3519 3520 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3521 struct p2p_channels *chan, 3522 struct p2p_channels *cli_chan) 3523 { 3524 struct hostapd_hw_modes *mode; 3525 int cla, op, cli_cla; 3526 3527 if (wpa_s->hw.modes == NULL) { 3528 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3529 "of all supported channels; assume dualband " 3530 "support"); 3531 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3532 } 3533 3534 cla = cli_cla = 0; 3535 3536 for (op = 0; global_op_class[op].op_class; op++) { 3537 const struct oper_class_map *o = &global_op_class[op]; 3538 u8 ch; 3539 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3540 3541 if (o->p2p == NO_P2P_SUPP) 3542 continue; 3543 3544 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3545 if (mode == NULL) 3546 continue; 3547 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3548 wpa_s->global->p2p_24ghz_social_channels = 1; 3549 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3550 enum chan_allowed res; 3551 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3552 if (res == ALLOWED) { 3553 if (reg == NULL) { 3554 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3555 o->op_class); 3556 reg = &chan->reg_class[cla]; 3557 cla++; 3558 reg->reg_class = o->op_class; 3559 } 3560 reg->channel[reg->channels] = ch; 3561 reg->channels++; 3562 } else if (res == NO_IR && 3563 wpa_s->conf->p2p_add_cli_chan) { 3564 if (cli_reg == NULL) { 3565 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3566 o->op_class); 3567 cli_reg = &cli_chan->reg_class[cli_cla]; 3568 cli_cla++; 3569 cli_reg->reg_class = o->op_class; 3570 } 3571 cli_reg->channel[cli_reg->channels] = ch; 3572 cli_reg->channels++; 3573 } 3574 } 3575 if (reg) { 3576 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3577 reg->channel, reg->channels); 3578 } 3579 if (cli_reg) { 3580 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3581 cli_reg->channel, cli_reg->channels); 3582 } 3583 } 3584 3585 chan->reg_classes = cla; 3586 cli_chan->reg_classes = cli_cla; 3587 3588 return 0; 3589 } 3590 3591 3592 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3593 struct hostapd_hw_modes *mode, u8 channel) 3594 { 3595 int op; 3596 enum chan_allowed ret; 3597 3598 for (op = 0; global_op_class[op].op_class; op++) { 3599 const struct oper_class_map *o = &global_op_class[op]; 3600 u8 ch; 3601 3602 if (o->p2p == NO_P2P_SUPP) 3603 continue; 3604 3605 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3606 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3607 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3608 ch != channel) 3609 continue; 3610 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3611 if (ret == ALLOWED) 3612 return (o->bw == BW40MINUS) ? -1 : 1; 3613 } 3614 } 3615 return 0; 3616 } 3617 3618 3619 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3620 struct hostapd_hw_modes *mode, u8 channel) 3621 { 3622 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3623 return 0; 3624 3625 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3626 } 3627 3628 3629 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3630 struct hostapd_hw_modes *mode, u8 channel) 3631 { 3632 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3633 return 0; 3634 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3635 } 3636 3637 3638 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3639 size_t buf_len) 3640 { 3641 struct wpa_supplicant *wpa_s = ctx; 3642 3643 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3644 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3645 break; 3646 } 3647 if (wpa_s == NULL) 3648 return -1; 3649 3650 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3651 } 3652 3653 3654 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3655 const u8 *ssid, size_t ssid_len) 3656 { 3657 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3658 struct wpa_ssid *s = wpa_s->current_ssid; 3659 if (s == NULL) 3660 continue; 3661 if (s->mode != WPAS_MODE_P2P_GO && 3662 s->mode != WPAS_MODE_AP && 3663 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3664 continue; 3665 if (s->ssid_len != ssid_len || 3666 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3667 continue; 3668 return wpa_s; 3669 } 3670 3671 return NULL; 3672 3673 } 3674 3675 3676 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3677 const u8 *peer_dev_addr) 3678 { 3679 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3680 struct wpa_ssid *ssid = wpa_s->current_ssid; 3681 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3682 continue; 3683 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3684 return wpa_s; 3685 } 3686 3687 return NULL; 3688 } 3689 3690 3691 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3692 { 3693 struct wpa_supplicant *wpa_s = ctx; 3694 3695 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3696 } 3697 3698 3699 static int wpas_is_concurrent_session_active(void *ctx) 3700 { 3701 struct wpa_supplicant *wpa_s = ctx; 3702 struct wpa_supplicant *ifs; 3703 3704 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3705 if (ifs == wpa_s) 3706 continue; 3707 if (ifs->wpa_state > WPA_ASSOCIATED) 3708 return 1; 3709 } 3710 return 0; 3711 } 3712 3713 3714 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3715 { 3716 struct wpa_supplicant *wpa_s = ctx; 3717 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3718 } 3719 3720 3721 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3722 const char *conf_p2p_dev) 3723 { 3724 struct wpa_interface iface; 3725 struct wpa_supplicant *p2pdev_wpa_s; 3726 char ifname[100]; 3727 char force_name[100]; 3728 int ret; 3729 3730 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3731 wpa_s->ifname); 3732 if (os_snprintf_error(sizeof(ifname), ret)) 3733 return -1; 3734 force_name[0] = '\0'; 3735 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3736 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3737 force_name, wpa_s->pending_interface_addr, NULL); 3738 if (ret < 0) { 3739 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3740 return ret; 3741 } 3742 os_strlcpy(wpa_s->pending_interface_name, ifname, 3743 sizeof(wpa_s->pending_interface_name)); 3744 3745 os_memset(&iface, 0, sizeof(iface)); 3746 iface.p2p_mgmt = 1; 3747 iface.ifname = wpa_s->pending_interface_name; 3748 iface.driver = wpa_s->driver->name; 3749 iface.driver_param = wpa_s->conf->driver_param; 3750 3751 /* 3752 * If a P2P Device configuration file was given, use it as the interface 3753 * configuration file (instead of using parent's configuration file. 3754 */ 3755 if (conf_p2p_dev) { 3756 iface.confname = conf_p2p_dev; 3757 iface.ctrl_interface = NULL; 3758 } else { 3759 iface.confname = wpa_s->confname; 3760 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3761 } 3762 3763 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3764 if (!p2pdev_wpa_s) { 3765 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3766 return -1; 3767 } 3768 3769 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s; 3770 wpa_s->pending_interface_name[0] = '\0'; 3771 return 0; 3772 } 3773 3774 3775 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3776 const u8 *noa, size_t noa_len) 3777 { 3778 struct wpa_supplicant *wpa_s, *intf = ctx; 3779 char hex[100]; 3780 3781 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3782 if (wpa_s->waiting_presence_resp) 3783 break; 3784 } 3785 if (!wpa_s) { 3786 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3787 return; 3788 } 3789 wpa_s->waiting_presence_resp = 0; 3790 3791 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3792 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3793 " status=%u noa=%s", MAC2STR(src), status, hex); 3794 } 3795 3796 3797 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3798 size_t ssid_len, u8 *go_dev_addr, 3799 u8 *ret_ssid, size_t *ret_ssid_len, 3800 u8 *intended_iface_addr) 3801 { 3802 struct wpa_supplicant *wpa_s = ctx; 3803 struct wpa_ssid *s; 3804 3805 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3806 if (s) { 3807 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3808 *ret_ssid_len = s->ssid_len; 3809 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3810 3811 if (s->mode != WPAS_MODE_P2P_GO) { 3812 os_memset(intended_iface_addr, 0, ETH_ALEN); 3813 } else if (wpas_p2p_create_iface(wpa_s)) { 3814 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3815 return 0; 3816 3817 os_memcpy(intended_iface_addr, 3818 wpa_s->pending_interface_addr, ETH_ALEN); 3819 } else { 3820 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3821 ETH_ALEN); 3822 } 3823 return 1; 3824 } 3825 3826 return 0; 3827 } 3828 3829 3830 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3831 u8 *ssid, size_t *ssid_len, int *group_iface, 3832 unsigned int *freq) 3833 { 3834 struct wpa_supplicant *wpa_s = ctx; 3835 struct wpa_supplicant *go; 3836 struct wpa_ssid *s; 3837 3838 /* 3839 * group_iface will be set to 1 only if a dedicated interface for P2P 3840 * role is required. First, we try to reuse an active GO. However, 3841 * if it is not present, we will try to reactivate an existing 3842 * persistent group and set group_iface to 1, so the caller will know 3843 * that the pending interface should be used. 3844 */ 3845 *group_iface = 0; 3846 3847 if (freq) 3848 *freq = 0; 3849 3850 go = wpas_p2p_get_go_group(wpa_s); 3851 if (!go) { 3852 s = wpas_p2p_get_persistent_go(wpa_s); 3853 *group_iface = wpas_p2p_create_iface(wpa_s); 3854 if (s) 3855 os_memcpy(intended_addr, s->bssid, ETH_ALEN); 3856 else 3857 return 0; 3858 } else { 3859 s = go->current_ssid; 3860 os_memcpy(intended_addr, go->own_addr, ETH_ALEN); 3861 if (freq) 3862 *freq = go->assoc_freq; 3863 } 3864 3865 os_memcpy(ssid, s->ssid, s->ssid_len); 3866 *ssid_len = s->ssid_len; 3867 3868 return 1; 3869 } 3870 3871 3872 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3873 const u8 *ssid, size_t ssid_len) 3874 { 3875 struct wpa_supplicant *wpa_s = ctx; 3876 struct wpa_ssid *s; 3877 int save_config = 0; 3878 size_t i; 3879 3880 /* Start with our first choice of Persistent Groups */ 3881 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3882 if (go && ssid && ssid_len && 3883 s->ssid_len == ssid_len && 3884 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3885 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3886 break; 3887 3888 /* Remove stale persistent group */ 3889 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3890 wpa_config_remove_network(wpa_s->conf, s->id); 3891 save_config = 1; 3892 continue; 3893 } 3894 3895 for (i = 0; i < s->num_p2p_clients; i++) { 3896 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3897 peer, ETH_ALEN) != 0) 3898 continue; 3899 3900 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3901 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3902 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3903 break; 3904 } 3905 s->num_p2p_clients--; 3906 save_config = 1; 3907 } 3908 3909 if (save_config) 3910 p2p_config_write(wpa_s); 3911 3912 /* Return TRUE if valid SSID remains */ 3913 return s != NULL; 3914 } 3915 3916 3917 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3918 const u8 *feat_cap, size_t feat_cap_len) 3919 { 3920 static const char pref[] = " feature_cap="; 3921 int ret; 3922 3923 buf[0] = '\0'; 3924 3925 /* 3926 * We expect a feature capability to contain at least one byte to be 3927 * reported. The string buffer provided by the caller function is 3928 * expected to be big enough to contain all bytes of the attribute for 3929 * known specifications. This function truncates the reported bytes if 3930 * the feature capability data exceeds the string buffer size. 3931 */ 3932 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 3933 return; 3934 3935 os_memcpy(buf, pref, sizeof(pref)); 3936 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 3937 buf_len - sizeof(pref) + 1, 3938 feat_cap, feat_cap_len); 3939 3940 if (ret != (2 * (int) feat_cap_len)) 3941 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 3942 } 3943 3944 3945 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 3946 const u8 *adv_mac, const u8 *ses_mac, 3947 const u8 *grp_mac, u32 adv_id, u32 ses_id, 3948 u8 conncap, int passwd_id, 3949 const u8 *persist_ssid, 3950 size_t persist_ssid_size, int response_done, 3951 int prov_start, const char *session_info, 3952 const u8 *feat_cap, size_t feat_cap_len, 3953 unsigned int freq, 3954 const u8 *group_ssid, size_t group_ssid_len) 3955 { 3956 struct wpa_supplicant *wpa_s = ctx; 3957 u8 mac[ETH_ALEN]; 3958 struct wpa_ssid *persistent_go, *stale, *s = NULL; 3959 int save_config = 0; 3960 struct wpa_supplicant *go_wpa_s; 3961 char feat_cap_str[256]; 3962 3963 if (!dev) 3964 return; 3965 3966 os_memset(mac, 0, ETH_ALEN); 3967 if (!adv_mac) 3968 adv_mac = mac; 3969 if (!ses_mac) 3970 ses_mac = mac; 3971 if (!grp_mac) 3972 grp_mac = mac; 3973 3974 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 3975 feat_cap, feat_cap_len); 3976 3977 if (prov_start) { 3978 if (session_info == NULL) { 3979 wpa_msg_global(wpa_s, MSG_INFO, 3980 P2P_EVENT_P2PS_PROVISION_START MACSTR 3981 " adv_id=%x conncap=%x" 3982 " adv_mac=" MACSTR 3983 " session=%x mac=" MACSTR 3984 " dev_passwd_id=%d%s", 3985 MAC2STR(dev), adv_id, conncap, 3986 MAC2STR(adv_mac), 3987 ses_id, MAC2STR(ses_mac), 3988 passwd_id, feat_cap_str); 3989 } else { 3990 wpa_msg_global(wpa_s, MSG_INFO, 3991 P2P_EVENT_P2PS_PROVISION_START MACSTR 3992 " adv_id=%x conncap=%x" 3993 " adv_mac=" MACSTR 3994 " session=%x mac=" MACSTR 3995 " dev_passwd_id=%d info='%s'%s", 3996 MAC2STR(dev), adv_id, conncap, 3997 MAC2STR(adv_mac), 3998 ses_id, MAC2STR(ses_mac), 3999 passwd_id, session_info, feat_cap_str); 4000 } 4001 return; 4002 } 4003 4004 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4005 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4006 4007 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4008 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4009 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4010 4011 if (persistent_go && !persistent_go->num_p2p_clients) { 4012 /* remove empty persistent GO */ 4013 wpa_config_remove_network(wpa_s->conf, 4014 persistent_go->id); 4015 } 4016 4017 wpa_msg_global(wpa_s, MSG_INFO, 4018 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4019 " status=%d" 4020 " adv_id=%x adv_mac=" MACSTR 4021 " session=%x mac=" MACSTR "%s", 4022 MAC2STR(dev), status, 4023 adv_id, MAC2STR(adv_mac), 4024 ses_id, MAC2STR(ses_mac), feat_cap_str); 4025 return; 4026 } 4027 4028 /* Clean up stale persistent groups with this device */ 4029 if (persist_ssid && persist_ssid_size) 4030 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4031 persist_ssid_size); 4032 4033 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4034 is_zero_ether_addr(grp_mac)) { 4035 wpa_dbg(wpa_s, MSG_ERROR, 4036 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4037 return; 4038 } 4039 4040 for (;;) { 4041 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4042 if (!stale) 4043 break; 4044 4045 if (s && s->ssid_len == stale->ssid_len && 4046 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4047 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4048 break; 4049 4050 /* Remove stale persistent group */ 4051 if (stale->mode != WPAS_MODE_P2P_GO || 4052 stale->num_p2p_clients <= 1) { 4053 wpa_config_remove_network(wpa_s->conf, stale->id); 4054 } else { 4055 size_t i; 4056 4057 for (i = 0; i < stale->num_p2p_clients; i++) { 4058 if (os_memcmp(stale->p2p_client_list + 4059 i * ETH_ALEN, 4060 dev, ETH_ALEN) == 0) { 4061 os_memmove(stale->p2p_client_list + 4062 i * ETH_ALEN, 4063 stale->p2p_client_list + 4064 (i + 1) * ETH_ALEN, 4065 (stale->num_p2p_clients - 4066 i - 1) * ETH_ALEN); 4067 break; 4068 } 4069 } 4070 stale->num_p2p_clients--; 4071 } 4072 save_config = 1; 4073 } 4074 4075 if (save_config) 4076 p2p_config_write(wpa_s); 4077 4078 if (s) { 4079 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4080 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4081 4082 if (persistent_go && s != persistent_go && 4083 !persistent_go->num_p2p_clients) { 4084 /* remove empty persistent GO */ 4085 wpa_config_remove_network(wpa_s->conf, 4086 persistent_go->id); 4087 /* Save config */ 4088 } 4089 4090 wpa_msg_global(wpa_s, MSG_INFO, 4091 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4092 " status=%d" 4093 " adv_id=%x adv_mac=" MACSTR 4094 " session=%x mac=" MACSTR 4095 " persist=%d%s", 4096 MAC2STR(dev), status, 4097 adv_id, MAC2STR(adv_mac), 4098 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4099 return; 4100 } 4101 4102 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4103 /* 4104 * We need to copy the interface name. Simply saving a 4105 * pointer isn't enough, since if we use pending_interface_name 4106 * it will be overwritten when the group is added. 4107 */ 4108 char go_ifname[100]; 4109 4110 go_ifname[0] = '\0'; 4111 if (!go_wpa_s) { 4112 wpa_s->global->pending_p2ps_group = 1; 4113 wpa_s->global->pending_p2ps_group_freq = freq; 4114 4115 if (!wpas_p2p_create_iface(wpa_s)) 4116 os_memcpy(go_ifname, wpa_s->ifname, 4117 sizeof(go_ifname)); 4118 else if (wpa_s->pending_interface_name[0]) 4119 os_memcpy(go_ifname, 4120 wpa_s->pending_interface_name, 4121 sizeof(go_ifname)); 4122 4123 if (!go_ifname[0]) { 4124 wpas_p2ps_prov_complete( 4125 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4126 dev, adv_mac, ses_mac, 4127 grp_mac, adv_id, ses_id, 0, 0, 4128 NULL, 0, 0, 0, NULL, NULL, 0, 0, 4129 NULL, 0); 4130 return; 4131 } 4132 4133 /* If PD Resp complete, start up the GO */ 4134 if (response_done && persistent_go) { 4135 wpas_p2p_group_add_persistent( 4136 wpa_s, persistent_go, 4137 0, 0, freq, 0, 0, 0, 0, NULL, 4138 persistent_go->mode == 4139 WPAS_MODE_P2P_GO ? 4140 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4141 0, 0); 4142 } else if (response_done) { 4143 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4144 } 4145 4146 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4147 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4148 ETH_ALEN); 4149 wpa_s->p2ps_method_config_any = 1; 4150 } 4151 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4152 os_memcpy(go_ifname, go_wpa_s->ifname, 4153 sizeof(go_ifname)); 4154 4155 if (is_zero_ether_addr(grp_mac)) { 4156 wpa_dbg(go_wpa_s, MSG_DEBUG, 4157 "P2P: Setting PIN-1 for ANY"); 4158 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4159 "12345670", NULL, 0, 4160 0); 4161 } else { 4162 wpa_dbg(go_wpa_s, MSG_DEBUG, 4163 "P2P: Setting PIN-1 for " MACSTR, 4164 MAC2STR(grp_mac)); 4165 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4166 "12345670", NULL, 0, 4167 0); 4168 } 4169 4170 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4171 wpa_s->p2ps_method_config_any = 1; 4172 } 4173 4174 wpa_msg_global(wpa_s, MSG_INFO, 4175 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4176 " status=%d conncap=%x" 4177 " adv_id=%x adv_mac=" MACSTR 4178 " session=%x mac=" MACSTR 4179 " dev_passwd_id=%d go=%s%s", 4180 MAC2STR(dev), status, conncap, 4181 adv_id, MAC2STR(adv_mac), 4182 ses_id, MAC2STR(ses_mac), 4183 passwd_id, go_ifname, feat_cap_str); 4184 return; 4185 } 4186 4187 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4188 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4189 4190 if (persistent_go && !persistent_go->num_p2p_clients) { 4191 /* remove empty persistent GO */ 4192 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4193 } 4194 4195 if (conncap == P2PS_SETUP_CLIENT) { 4196 char ssid_hex[32 * 2 + 1]; 4197 4198 if (group_ssid) 4199 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex), 4200 group_ssid, group_ssid_len); 4201 else 4202 ssid_hex[0] = '\0'; 4203 wpa_msg_global(wpa_s, MSG_INFO, 4204 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4205 " status=%d conncap=%x" 4206 " adv_id=%x adv_mac=" MACSTR 4207 " session=%x mac=" MACSTR 4208 " dev_passwd_id=%d join=" MACSTR "%s%s%s", 4209 MAC2STR(dev), status, conncap, 4210 adv_id, MAC2STR(adv_mac), 4211 ses_id, MAC2STR(ses_mac), 4212 passwd_id, MAC2STR(grp_mac), feat_cap_str, 4213 group_ssid ? " group_ssid=" : "", ssid_hex); 4214 } else { 4215 wpa_msg_global(wpa_s, MSG_INFO, 4216 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4217 " status=%d conncap=%x" 4218 " adv_id=%x adv_mac=" MACSTR 4219 " session=%x mac=" MACSTR 4220 " dev_passwd_id=%d%s", 4221 MAC2STR(dev), status, conncap, 4222 adv_id, MAC2STR(adv_mac), 4223 ses_id, MAC2STR(ses_mac), 4224 passwd_id, feat_cap_str); 4225 } 4226 } 4227 4228 4229 static int _wpas_p2p_in_progress(void *ctx) 4230 { 4231 struct wpa_supplicant *wpa_s = ctx; 4232 return wpas_p2p_in_progress(wpa_s); 4233 } 4234 4235 4236 static int wpas_prov_disc_resp_cb(void *ctx) 4237 { 4238 struct wpa_supplicant *wpa_s = ctx; 4239 struct wpa_ssid *persistent_go; 4240 unsigned int freq; 4241 4242 if (!wpa_s->global->pending_p2ps_group) 4243 return 0; 4244 4245 freq = wpa_s->global->pending_p2ps_group_freq; 4246 wpa_s->global->pending_p2ps_group_freq = 0; 4247 wpa_s->global->pending_p2ps_group = 0; 4248 4249 if (wpas_p2p_get_go_group(wpa_s)) 4250 return 0; 4251 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4252 4253 if (persistent_go) { 4254 wpas_p2p_group_add_persistent( 4255 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL, 4256 persistent_go->mode == WPAS_MODE_P2P_GO ? 4257 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4258 } else { 4259 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4260 } 4261 4262 return 1; 4263 } 4264 4265 4266 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4267 unsigned int *len, 4268 unsigned int *freq_list) 4269 { 4270 struct wpa_supplicant *wpa_s = ctx; 4271 4272 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4273 WPA_IF_P2P_CLIENT, len, freq_list); 4274 } 4275 4276 4277 /** 4278 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4279 * @global: Pointer to global data from wpa_supplicant_init() 4280 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4281 * Returns: 0 on success, -1 on failure 4282 */ 4283 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4284 { 4285 struct p2p_config p2p; 4286 int i; 4287 4288 if (wpa_s->conf->p2p_disabled) 4289 return 0; 4290 4291 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4292 return 0; 4293 4294 if (global->p2p) 4295 return 0; 4296 4297 os_memset(&p2p, 0, sizeof(p2p)); 4298 p2p.cb_ctx = wpa_s; 4299 p2p.debug_print = wpas_p2p_debug_print; 4300 p2p.p2p_scan = wpas_p2p_scan; 4301 p2p.send_action = wpas_send_action; 4302 p2p.send_action_done = wpas_send_action_done; 4303 p2p.go_neg_completed = wpas_go_neg_completed; 4304 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4305 p2p.dev_found = wpas_dev_found; 4306 p2p.dev_lost = wpas_dev_lost; 4307 p2p.find_stopped = wpas_find_stopped; 4308 p2p.start_listen = wpas_start_listen; 4309 p2p.stop_listen = wpas_stop_listen; 4310 p2p.send_probe_resp = wpas_send_probe_resp; 4311 p2p.sd_request = wpas_sd_request; 4312 p2p.sd_response = wpas_sd_response; 4313 p2p.prov_disc_req = wpas_prov_disc_req; 4314 p2p.prov_disc_resp = wpas_prov_disc_resp; 4315 p2p.prov_disc_fail = wpas_prov_disc_fail; 4316 p2p.invitation_process = wpas_invitation_process; 4317 p2p.invitation_received = wpas_invitation_received; 4318 p2p.invitation_result = wpas_invitation_result; 4319 p2p.get_noa = wpas_get_noa; 4320 p2p.go_connected = wpas_go_connected; 4321 p2p.presence_resp = wpas_presence_resp; 4322 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4323 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4324 p2p.get_persistent_group = wpas_get_persistent_group; 4325 p2p.get_go_info = wpas_get_go_info; 4326 p2p.remove_stale_groups = wpas_remove_stale_groups; 4327 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4328 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4329 p2p.p2ps_group_capability = p2ps_group_capability; 4330 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4331 4332 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4333 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4334 p2p.dev_name = wpa_s->conf->device_name; 4335 p2p.manufacturer = wpa_s->conf->manufacturer; 4336 p2p.model_name = wpa_s->conf->model_name; 4337 p2p.model_number = wpa_s->conf->model_number; 4338 p2p.serial_number = wpa_s->conf->serial_number; 4339 if (wpa_s->wps) { 4340 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4341 p2p.config_methods = wpa_s->wps->config_methods; 4342 } 4343 4344 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4345 wpa_printf(MSG_ERROR, 4346 "P2P: Failed to configure supported channel list"); 4347 return -1; 4348 } 4349 4350 if (wpa_s->conf->p2p_listen_reg_class && 4351 wpa_s->conf->p2p_listen_channel) { 4352 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4353 p2p.channel = wpa_s->conf->p2p_listen_channel; 4354 p2p.channel_forced = 1; 4355 } else { 4356 /* 4357 * Pick one of the social channels randomly as the listen 4358 * channel. 4359 */ 4360 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4361 &p2p.channel) != 0) { 4362 wpa_printf(MSG_INFO, 4363 "P2P: No social channels supported by the driver - do not enable P2P"); 4364 return 0; 4365 } 4366 p2p.channel_forced = 0; 4367 } 4368 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4369 p2p.reg_class, p2p.channel); 4370 4371 if (wpa_s->conf->p2p_oper_reg_class && 4372 wpa_s->conf->p2p_oper_channel) { 4373 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4374 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4375 p2p.cfg_op_channel = 1; 4376 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4377 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4378 4379 } else { 4380 /* 4381 * Use random operation channel from 2.4 GHz band social 4382 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4383 * other preference is indicated. 4384 */ 4385 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4386 &p2p.op_channel) != 0) { 4387 wpa_printf(MSG_ERROR, 4388 "P2P: Failed to select random social channel as operation channel"); 4389 return -1; 4390 } 4391 p2p.cfg_op_channel = 0; 4392 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4393 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4394 } 4395 4396 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4397 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4398 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4399 } 4400 4401 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4402 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4403 p2p.country[2] = 0x04; 4404 } else 4405 os_memcpy(p2p.country, "XX\x04", 3); 4406 4407 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4408 WPS_DEV_TYPE_LEN); 4409 4410 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4411 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4412 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4413 4414 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4415 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4416 4417 p2p.max_peers = 100; 4418 4419 if (wpa_s->conf->p2p_ssid_postfix) { 4420 p2p.ssid_postfix_len = 4421 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4422 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4423 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4424 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4425 p2p.ssid_postfix_len); 4426 } 4427 4428 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4429 4430 p2p.max_listen = wpa_s->max_remain_on_chan; 4431 4432 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4433 wpa_s->conf->p2p_passphrase_len <= 63) 4434 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4435 else 4436 p2p.passphrase_len = 8; 4437 4438 global->p2p = p2p_init(&p2p); 4439 if (global->p2p == NULL) 4440 return -1; 4441 global->p2p_init_wpa_s = wpa_s; 4442 4443 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4444 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4445 continue; 4446 p2p_add_wps_vendor_extension( 4447 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4448 } 4449 4450 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4451 4452 return 0; 4453 } 4454 4455 4456 /** 4457 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4458 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4459 * 4460 * This function deinitialize per-interface P2P data. 4461 */ 4462 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4463 { 4464 if (wpa_s->driver && wpa_s->drv_priv) 4465 wpa_drv_probe_req_report(wpa_s, 0); 4466 4467 if (wpa_s->go_params) { 4468 /* Clear any stored provisioning info */ 4469 p2p_clear_provisioning_info( 4470 wpa_s->global->p2p, 4471 wpa_s->go_params->peer_device_addr); 4472 } 4473 4474 os_free(wpa_s->go_params); 4475 wpa_s->go_params = NULL; 4476 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4477 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4478 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4479 wpa_s->p2p_long_listen = 0; 4480 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4481 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4482 wpas_p2p_remove_pending_group_interface(wpa_s); 4483 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4484 wpas_p2p_listen_work_done(wpa_s); 4485 if (wpa_s->p2p_send_action_work) { 4486 os_free(wpa_s->p2p_send_action_work->ctx); 4487 radio_work_done(wpa_s->p2p_send_action_work); 4488 wpa_s->p2p_send_action_work = NULL; 4489 } 4490 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4491 4492 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4493 wpa_s->p2p_oob_dev_pw = NULL; 4494 4495 os_free(wpa_s->p2p_group_common_freqs); 4496 wpa_s->p2p_group_common_freqs = NULL; 4497 wpa_s->p2p_group_common_freqs_num = 0; 4498 4499 /* TODO: remove group interface from the driver if this wpa_s instance 4500 * is on top of a P2P group interface */ 4501 } 4502 4503 4504 /** 4505 * wpas_p2p_deinit_global - Deinitialize global P2P module 4506 * @global: Pointer to global data from wpa_supplicant_init() 4507 * 4508 * This function deinitializes the global (per device) P2P module. 4509 */ 4510 static void wpas_p2p_deinit_global(struct wpa_global *global) 4511 { 4512 struct wpa_supplicant *wpa_s, *tmp; 4513 4514 wpa_s = global->ifaces; 4515 4516 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4517 4518 /* Remove remaining P2P group interfaces */ 4519 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4520 wpa_s = wpa_s->next; 4521 while (wpa_s) { 4522 tmp = global->ifaces; 4523 while (tmp && 4524 (tmp == wpa_s || 4525 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4526 tmp = tmp->next; 4527 } 4528 if (tmp == NULL) 4529 break; 4530 /* Disconnect from the P2P group and deinit the interface */ 4531 wpas_p2p_disconnect(tmp); 4532 } 4533 4534 /* 4535 * Deinit GO data on any possibly remaining interface (if main 4536 * interface is used as GO). 4537 */ 4538 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4539 if (wpa_s->ap_iface) 4540 wpas_p2p_group_deinit(wpa_s); 4541 } 4542 4543 p2p_deinit(global->p2p); 4544 global->p2p = NULL; 4545 global->p2p_init_wpa_s = NULL; 4546 } 4547 4548 4549 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4550 { 4551 if (wpa_s->conf->p2p_no_group_iface) 4552 return 0; /* separate interface disabled per configuration */ 4553 if (wpa_s->drv_flags & 4554 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4555 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4556 return 1; /* P2P group requires a new interface in every case 4557 */ 4558 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4559 return 0; /* driver does not support concurrent operations */ 4560 if (wpa_s->global->ifaces->next) 4561 return 1; /* more that one interface already in use */ 4562 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4563 return 1; /* this interface is already in use */ 4564 return 0; 4565 } 4566 4567 4568 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4569 const u8 *peer_addr, 4570 enum p2p_wps_method wps_method, 4571 int go_intent, const u8 *own_interface_addr, 4572 unsigned int force_freq, int persistent_group, 4573 struct wpa_ssid *ssid, unsigned int pref_freq) 4574 { 4575 if (persistent_group && wpa_s->conf->persistent_reconnect) 4576 persistent_group = 2; 4577 4578 /* 4579 * Increase GO config timeout if HT40 is used since it takes some time 4580 * to scan channels for coex purposes before the BSS can be started. 4581 */ 4582 p2p_set_config_timeout(wpa_s->global->p2p, 4583 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4584 4585 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4586 go_intent, own_interface_addr, force_freq, 4587 persistent_group, ssid ? ssid->ssid : NULL, 4588 ssid ? ssid->ssid_len : 0, 4589 wpa_s->p2p_pd_before_go_neg, pref_freq, 4590 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4591 0); 4592 } 4593 4594 4595 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4596 const u8 *peer_addr, 4597 enum p2p_wps_method wps_method, 4598 int go_intent, const u8 *own_interface_addr, 4599 unsigned int force_freq, int persistent_group, 4600 struct wpa_ssid *ssid, unsigned int pref_freq) 4601 { 4602 if (persistent_group && wpa_s->conf->persistent_reconnect) 4603 persistent_group = 2; 4604 4605 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4606 go_intent, own_interface_addr, force_freq, 4607 persistent_group, ssid ? ssid->ssid : NULL, 4608 ssid ? ssid->ssid_len : 0, pref_freq, 4609 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4610 0); 4611 } 4612 4613 4614 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4615 { 4616 wpa_s->p2p_join_scan_count++; 4617 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4618 wpa_s->p2p_join_scan_count); 4619 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4620 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4621 " for join operationg - stop join attempt", 4622 MAC2STR(wpa_s->pending_join_iface_addr)); 4623 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4624 if (wpa_s->p2p_auto_pd) { 4625 wpa_s->p2p_auto_pd = 0; 4626 wpa_msg_global(wpa_s, MSG_INFO, 4627 P2P_EVENT_PROV_DISC_FAILURE 4628 " p2p_dev_addr=" MACSTR " status=N/A", 4629 MAC2STR(wpa_s->pending_join_dev_addr)); 4630 return; 4631 } 4632 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4633 P2P_EVENT_GROUP_FORMATION_FAILURE); 4634 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4635 } 4636 } 4637 4638 4639 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4640 { 4641 int res; 4642 unsigned int num, i; 4643 struct wpa_used_freq_data *freqs; 4644 4645 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4646 /* Multiple channels are supported and not all are in use */ 4647 return 0; 4648 } 4649 4650 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4651 sizeof(struct wpa_used_freq_data)); 4652 if (!freqs) 4653 return 1; 4654 4655 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4656 wpa_s->num_multichan_concurrent); 4657 4658 for (i = 0; i < num; i++) { 4659 if (freqs[i].freq == freq) { 4660 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4661 freq); 4662 res = 0; 4663 goto exit_free; 4664 } 4665 } 4666 4667 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4668 res = 1; 4669 4670 exit_free: 4671 os_free(freqs); 4672 return res; 4673 } 4674 4675 4676 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4677 const u8 *peer_dev_addr) 4678 { 4679 struct wpa_bss *bss; 4680 int updated; 4681 4682 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4683 if (bss == NULL) 4684 return -1; 4685 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4686 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4687 "last scan"); 4688 return 0; 4689 } 4690 4691 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4692 &bss->last_update); 4693 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4694 "%ld.%06ld (%supdated in last scan)", 4695 bss->last_update.sec, bss->last_update.usec, 4696 updated ? "": "not "); 4697 4698 return updated; 4699 } 4700 4701 4702 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4703 struct wpa_scan_results *scan_res) 4704 { 4705 struct wpa_bss *bss = NULL; 4706 int freq; 4707 u8 iface_addr[ETH_ALEN]; 4708 4709 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4710 4711 if (wpa_s->global->p2p_disabled) 4712 return; 4713 4714 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4715 scan_res ? (int) scan_res->num : -1, 4716 wpa_s->p2p_auto_join ? "auto_" : ""); 4717 4718 if (scan_res) 4719 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4720 4721 if (wpa_s->p2p_auto_pd) { 4722 int join = wpas_p2p_peer_go(wpa_s, 4723 wpa_s->pending_join_dev_addr); 4724 if (join == 0 && 4725 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4726 wpa_s->auto_pd_scan_retry++; 4727 bss = wpa_bss_get_bssid_latest( 4728 wpa_s, wpa_s->pending_join_dev_addr); 4729 if (bss) { 4730 freq = bss->freq; 4731 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4732 "the peer " MACSTR " at %d MHz", 4733 wpa_s->auto_pd_scan_retry, 4734 MAC2STR(wpa_s-> 4735 pending_join_dev_addr), 4736 freq); 4737 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4738 return; 4739 } 4740 } 4741 4742 if (join < 0) 4743 join = 0; 4744 4745 wpa_s->p2p_auto_pd = 0; 4746 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4747 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4748 MAC2STR(wpa_s->pending_join_dev_addr), join); 4749 if (p2p_prov_disc_req(wpa_s->global->p2p, 4750 wpa_s->pending_join_dev_addr, NULL, 4751 wpa_s->pending_pd_config_methods, join, 4752 0, wpa_s->user_initiated_pd) < 0) { 4753 wpa_s->p2p_auto_pd = 0; 4754 wpa_msg_global(wpa_s, MSG_INFO, 4755 P2P_EVENT_PROV_DISC_FAILURE 4756 " p2p_dev_addr=" MACSTR " status=N/A", 4757 MAC2STR(wpa_s->pending_join_dev_addr)); 4758 } 4759 return; 4760 } 4761 4762 if (wpa_s->p2p_auto_join) { 4763 int join = wpas_p2p_peer_go(wpa_s, 4764 wpa_s->pending_join_dev_addr); 4765 if (join < 0) { 4766 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4767 "running a GO -> use GO Negotiation"); 4768 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4769 P2P_EVENT_FALLBACK_TO_GO_NEG 4770 "reason=peer-not-running-GO"); 4771 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4772 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4773 wpa_s->p2p_persistent_group, 0, 0, 0, 4774 wpa_s->p2p_go_intent, 4775 wpa_s->p2p_connect_freq, 4776 wpa_s->p2p_go_vht_center_freq2, 4777 wpa_s->p2p_persistent_id, 4778 wpa_s->p2p_pd_before_go_neg, 4779 wpa_s->p2p_go_ht40, 4780 wpa_s->p2p_go_vht, 4781 wpa_s->p2p_go_max_oper_chwidth, 4782 NULL, 0); 4783 return; 4784 } 4785 4786 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4787 "try to join the group", join ? "" : 4788 " in older scan"); 4789 if (!join) { 4790 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4791 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4792 wpa_s->p2p_fallback_to_go_neg = 1; 4793 } 4794 } 4795 4796 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4797 wpa_s->pending_join_iface_addr); 4798 if (freq < 0 && 4799 p2p_get_interface_addr(wpa_s->global->p2p, 4800 wpa_s->pending_join_dev_addr, 4801 iface_addr) == 0 && 4802 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4803 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4804 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4805 "address for join from " MACSTR " to " MACSTR 4806 " based on newly discovered P2P peer entry", 4807 MAC2STR(wpa_s->pending_join_iface_addr), 4808 MAC2STR(iface_addr)); 4809 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4810 ETH_ALEN); 4811 4812 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4813 wpa_s->pending_join_iface_addr); 4814 } 4815 if (freq >= 0) { 4816 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4817 "from P2P peer table: %d MHz", freq); 4818 } 4819 if (wpa_s->p2p_join_ssid_len) { 4820 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4821 MACSTR " and SSID %s", 4822 MAC2STR(wpa_s->pending_join_iface_addr), 4823 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4824 wpa_s->p2p_join_ssid_len)); 4825 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4826 wpa_s->p2p_join_ssid, 4827 wpa_s->p2p_join_ssid_len); 4828 } else if (!bss) { 4829 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4830 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4831 bss = wpa_bss_get_bssid_latest(wpa_s, 4832 wpa_s->pending_join_iface_addr); 4833 } 4834 if (bss) { 4835 u8 dev_addr[ETH_ALEN]; 4836 4837 freq = bss->freq; 4838 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4839 "from BSS table: %d MHz (SSID %s)", freq, 4840 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4841 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 4842 dev_addr) == 0 && 4843 os_memcmp(wpa_s->pending_join_dev_addr, 4844 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 4845 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 4846 ETH_ALEN) != 0) { 4847 wpa_printf(MSG_DEBUG, 4848 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 4849 MAC2STR(dev_addr), 4850 MAC2STR(wpa_s->pending_join_dev_addr)); 4851 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 4852 ETH_ALEN); 4853 } 4854 } 4855 if (freq > 0) { 4856 u16 method; 4857 4858 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4859 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4860 P2P_EVENT_GROUP_FORMATION_FAILURE 4861 "reason=FREQ_CONFLICT"); 4862 wpas_notify_p2p_group_formation_failure( 4863 wpa_s, "FREQ_CONFLICT"); 4864 return; 4865 } 4866 4867 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4868 "prior to joining an existing group (GO " MACSTR 4869 " freq=%u MHz)", 4870 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4871 wpa_s->pending_pd_before_join = 1; 4872 4873 switch (wpa_s->pending_join_wps_method) { 4874 case WPS_PIN_DISPLAY: 4875 method = WPS_CONFIG_KEYPAD; 4876 break; 4877 case WPS_PIN_KEYPAD: 4878 method = WPS_CONFIG_DISPLAY; 4879 break; 4880 case WPS_PBC: 4881 method = WPS_CONFIG_PUSHBUTTON; 4882 break; 4883 case WPS_P2PS: 4884 method = WPS_CONFIG_P2PS; 4885 break; 4886 default: 4887 method = 0; 4888 break; 4889 } 4890 4891 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4892 wpa_s->pending_join_dev_addr) == 4893 method)) { 4894 /* 4895 * We have already performed provision discovery for 4896 * joining the group. Proceed directly to join 4897 * operation without duplicated provision discovery. */ 4898 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4899 "with " MACSTR " already done - proceed to " 4900 "join", 4901 MAC2STR(wpa_s->pending_join_dev_addr)); 4902 wpa_s->pending_pd_before_join = 0; 4903 goto start; 4904 } 4905 4906 if (p2p_prov_disc_req(wpa_s->global->p2p, 4907 wpa_s->pending_join_dev_addr, 4908 NULL, method, 1, 4909 freq, wpa_s->user_initiated_pd) < 0) { 4910 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4911 "Discovery Request before joining an " 4912 "existing group"); 4913 wpa_s->pending_pd_before_join = 0; 4914 goto start; 4915 } 4916 return; 4917 } 4918 4919 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4920 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4921 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4922 wpas_p2p_check_join_scan_limit(wpa_s); 4923 return; 4924 4925 start: 4926 /* Start join operation immediately */ 4927 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid, 4928 wpa_s->p2p_join_ssid_len); 4929 } 4930 4931 4932 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4933 const u8 *ssid, size_t ssid_len) 4934 { 4935 int ret; 4936 struct wpa_driver_scan_params params; 4937 struct wpabuf *wps_ie, *ies; 4938 size_t ielen; 4939 int freqs[2] = { 0, 0 }; 4940 unsigned int bands; 4941 4942 os_memset(¶ms, 0, sizeof(params)); 4943 4944 /* P2P Wildcard SSID */ 4945 params.num_ssids = 1; 4946 if (ssid && ssid_len) { 4947 params.ssids[0].ssid = ssid; 4948 params.ssids[0].ssid_len = ssid_len; 4949 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4950 wpa_s->p2p_join_ssid_len = ssid_len; 4951 } else { 4952 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4953 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4954 wpa_s->p2p_join_ssid_len = 0; 4955 } 4956 4957 wpa_s->wps->dev.p2p = 1; 4958 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4959 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4960 NULL); 4961 if (wps_ie == NULL) { 4962 wpas_p2p_scan_res_join(wpa_s, NULL); 4963 return; 4964 } 4965 4966 if (!freq) { 4967 int oper_freq; 4968 /* 4969 * If freq is not provided, check the operating freq of the GO 4970 * and use a single channel scan on if possible. 4971 */ 4972 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 4973 wpa_s->pending_join_iface_addr); 4974 if (oper_freq > 0) 4975 freq = oper_freq; 4976 } 4977 if (freq > 0) { 4978 freqs[0] = freq; 4979 params.freqs = freqs; 4980 } 4981 4982 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 4983 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 4984 if (ies == NULL) { 4985 wpabuf_free(wps_ie); 4986 wpas_p2p_scan_res_join(wpa_s, NULL); 4987 return; 4988 } 4989 wpabuf_put_buf(ies, wps_ie); 4990 wpabuf_free(wps_ie); 4991 4992 bands = wpas_get_bands(wpa_s, freqs); 4993 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 4994 4995 params.p2p_probe = 1; 4996 params.extra_ies = wpabuf_head(ies); 4997 params.extra_ies_len = wpabuf_len(ies); 4998 4999 /* 5000 * Run a scan to update BSS table and start Provision Discovery once 5001 * the new scan results become available. 5002 */ 5003 ret = wpa_drv_scan(wpa_s, ¶ms); 5004 if (!ret) { 5005 os_get_reltime(&wpa_s->scan_trigger_time); 5006 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 5007 wpa_s->own_scan_requested = 1; 5008 } 5009 5010 wpabuf_free(ies); 5011 5012 if (ret) { 5013 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5014 "try again later"); 5015 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5016 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5017 wpas_p2p_check_join_scan_limit(wpa_s); 5018 } 5019 } 5020 5021 5022 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5023 { 5024 struct wpa_supplicant *wpa_s = eloop_ctx; 5025 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5026 } 5027 5028 5029 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5030 const u8 *dev_addr, enum p2p_wps_method wps_method, 5031 int auto_join, int op_freq, 5032 const u8 *ssid, size_t ssid_len) 5033 { 5034 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5035 MACSTR " dev " MACSTR " op_freq=%d)%s", 5036 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5037 auto_join ? " (auto_join)" : ""); 5038 if (ssid && ssid_len) { 5039 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5040 wpa_ssid_txt(ssid, ssid_len)); 5041 } 5042 5043 wpa_s->p2p_auto_pd = 0; 5044 wpa_s->p2p_auto_join = !!auto_join; 5045 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5046 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5047 wpa_s->pending_join_wps_method = wps_method; 5048 5049 /* Make sure we are not running find during connection establishment */ 5050 wpas_p2p_stop_find(wpa_s); 5051 5052 wpa_s->p2p_join_scan_count = 0; 5053 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5054 return 0; 5055 } 5056 5057 5058 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5059 const u8 *ssid, size_t ssid_len) 5060 { 5061 struct wpa_supplicant *group; 5062 struct p2p_go_neg_results res; 5063 struct wpa_bss *bss; 5064 5065 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5066 if (group == NULL) 5067 return -1; 5068 if (group != wpa_s) { 5069 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5070 sizeof(group->p2p_pin)); 5071 group->p2p_wps_method = wpa_s->p2p_wps_method; 5072 } else { 5073 /* 5074 * Need to mark the current interface for p2p_group_formation 5075 * when a separate group interface is not used. This is needed 5076 * to allow p2p_cancel stop a pending p2p_connect-join. 5077 * wpas_p2p_init_group_interface() addresses this for the case 5078 * where a separate group interface is used. 5079 */ 5080 wpa_s->global->p2p_group_formation = wpa_s; 5081 } 5082 5083 group->p2p_in_provisioning = 1; 5084 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5085 5086 os_memset(&res, 0, sizeof(res)); 5087 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5088 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5089 ETH_ALEN); 5090 res.wps_method = wpa_s->pending_join_wps_method; 5091 if (freq && ssid && ssid_len) { 5092 res.freq = freq; 5093 res.ssid_len = ssid_len; 5094 os_memcpy(res.ssid, ssid, ssid_len); 5095 } else { 5096 if (ssid && ssid_len) { 5097 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 5098 ssid, ssid_len); 5099 } else { 5100 bss = wpa_bss_get_bssid_latest( 5101 wpa_s, wpa_s->pending_join_iface_addr); 5102 } 5103 if (bss) { 5104 res.freq = bss->freq; 5105 res.ssid_len = bss->ssid_len; 5106 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5107 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5108 bss->freq, 5109 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5110 } else if (ssid && ssid_len) { 5111 res.ssid_len = ssid_len; 5112 os_memcpy(res.ssid, ssid, ssid_len); 5113 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)", 5114 wpa_ssid_txt(ssid, ssid_len)); 5115 } 5116 } 5117 5118 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5119 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5120 "starting client"); 5121 wpa_drv_cancel_remain_on_channel(wpa_s); 5122 wpa_s->off_channel_freq = 0; 5123 wpa_s->roc_waiting_drv_freq = 0; 5124 } 5125 wpas_start_wps_enrollee(group, &res); 5126 5127 /* 5128 * Allow a longer timeout for join-a-running-group than normal 15 5129 * second group formation timeout since the GO may not have authorized 5130 * our connection yet. 5131 */ 5132 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5133 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5134 wpa_s, NULL); 5135 5136 return 0; 5137 } 5138 5139 5140 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5141 int *force_freq, int *pref_freq, int go, 5142 unsigned int *pref_freq_list, 5143 unsigned int *num_pref_freq) 5144 { 5145 struct wpa_used_freq_data *freqs; 5146 int res, best_freq, num_unused; 5147 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5148 5149 max_pref_freq = *num_pref_freq; 5150 *num_pref_freq = 0; 5151 5152 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5153 sizeof(struct wpa_used_freq_data)); 5154 if (!freqs) 5155 return -1; 5156 5157 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5158 wpa_s->num_multichan_concurrent); 5159 5160 /* 5161 * It is possible that the total number of used frequencies is bigger 5162 * than the number of frequencies used for P2P, so get the system wide 5163 * number of unused frequencies. 5164 */ 5165 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5166 5167 wpa_printf(MSG_DEBUG, 5168 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5169 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5170 5171 if (freq > 0) { 5172 int ret; 5173 if (go) 5174 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5175 else 5176 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5177 if (!ret) { 5178 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5179 ieee80211_is_dfs(freq)) { 5180 /* 5181 * If freq is a DFS channel and DFS is offloaded 5182 * to the driver, allow P2P GO to use it. 5183 */ 5184 wpa_printf(MSG_DEBUG, 5185 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5186 freq); 5187 } else { 5188 wpa_printf(MSG_DEBUG, 5189 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5190 freq); 5191 res = -3; 5192 goto exit_free; 5193 } 5194 } 5195 5196 for (i = 0; i < num; i++) { 5197 if (freqs[i].freq == freq) 5198 freq_in_use = 1; 5199 } 5200 5201 if (num_unused <= 0 && !freq_in_use) { 5202 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5203 freq); 5204 res = -2; 5205 goto exit_free; 5206 } 5207 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5208 "requested channel (%u MHz)", freq); 5209 *force_freq = freq; 5210 goto exit_ok; 5211 } 5212 5213 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5214 5215 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5216 enum wpa_driver_if_type iface_type; 5217 5218 if (go) 5219 iface_type = WPA_IF_P2P_GO; 5220 else 5221 iface_type = WPA_IF_P2P_CLIENT; 5222 5223 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5224 best_freq, go); 5225 5226 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5227 &max_pref_freq, 5228 pref_freq_list); 5229 if (!res && max_pref_freq > 0) { 5230 *num_pref_freq = max_pref_freq; 5231 i = 0; 5232 while (wpas_p2p_disallowed_freq(wpa_s->global, 5233 pref_freq_list[i]) && 5234 i < *num_pref_freq) { 5235 wpa_printf(MSG_DEBUG, 5236 "P2P: preferred_freq_list[%d]=%d is disallowed", 5237 i, pref_freq_list[i]); 5238 i++; 5239 } 5240 if (i != *num_pref_freq) { 5241 best_freq = pref_freq_list[i]; 5242 wpa_printf(MSG_DEBUG, 5243 "P2P: Using preferred_freq_list[%d]=%d", 5244 i, best_freq); 5245 } else { 5246 wpa_printf(MSG_DEBUG, 5247 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5248 *num_pref_freq = 0; 5249 } 5250 } else { 5251 wpa_printf(MSG_DEBUG, 5252 "P2P: No preferred frequency list available"); 5253 } 5254 } 5255 5256 /* We have a candidate frequency to use */ 5257 if (best_freq > 0) { 5258 if (*pref_freq == 0 && num_unused > 0) { 5259 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5260 best_freq); 5261 *pref_freq = best_freq; 5262 } else { 5263 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5264 best_freq); 5265 *force_freq = best_freq; 5266 } 5267 } else if (num_unused > 0) { 5268 wpa_printf(MSG_DEBUG, 5269 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5270 *force_freq = 0; 5271 } else { 5272 wpa_printf(MSG_DEBUG, 5273 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5274 res = -2; 5275 goto exit_free; 5276 } 5277 5278 exit_ok: 5279 res = 0; 5280 exit_free: 5281 os_free(freqs); 5282 return res; 5283 } 5284 5285 5286 /** 5287 * wpas_p2p_connect - Request P2P Group Formation to be started 5288 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5289 * @peer_addr: Address of the peer P2P Device 5290 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5291 * @persistent_group: Whether to create a persistent group 5292 * @auto_join: Whether to select join vs. GO Negotiation automatically 5293 * @join: Whether to join an existing group (as a client) instead of starting 5294 * Group Owner negotiation; @peer_addr is BSSID in that case 5295 * @auth: Whether to only authorize the connection instead of doing that and 5296 * initiating Group Owner negotiation 5297 * @go_intent: GO Intent or -1 to use default 5298 * @freq: Frequency for the group or 0 for auto-selection 5299 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5300 * @persistent_id: Persistent group credentials to use for forcing GO 5301 * parameters or -1 to generate new values (SSID/passphrase) 5302 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5303 * interoperability workaround when initiating group formation 5304 * @ht40: Start GO with 40 MHz channel width 5305 * @vht: Start GO with VHT support 5306 * @vht_chwidth: Channel width supported by GO operating with VHT support 5307 * (VHT_CHANWIDTH_*). 5308 * @group_ssid: Specific Group SSID for join or %NULL if not set 5309 * @group_ssid_len: Length of @group_ssid in octets 5310 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5311 * failure, -2 on failure due to channel not currently available, 5312 * -3 if forced channel is not supported 5313 */ 5314 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5315 const char *pin, enum p2p_wps_method wps_method, 5316 int persistent_group, int auto_join, int join, int auth, 5317 int go_intent, int freq, unsigned int vht_center_freq2, 5318 int persistent_id, int pd, int ht40, int vht, 5319 unsigned int vht_chwidth, const u8 *group_ssid, 5320 size_t group_ssid_len) 5321 { 5322 int force_freq = 0, pref_freq = 0; 5323 int ret = 0, res; 5324 enum wpa_driver_if_type iftype; 5325 const u8 *if_addr; 5326 struct wpa_ssid *ssid = NULL; 5327 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5328 5329 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5330 return -1; 5331 5332 if (persistent_id >= 0) { 5333 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5334 if (ssid == NULL || ssid->disabled != 2 || 5335 ssid->mode != WPAS_MODE_P2P_GO) 5336 return -1; 5337 } 5338 5339 os_free(wpa_s->global->add_psk); 5340 wpa_s->global->add_psk = NULL; 5341 5342 wpa_s->global->p2p_fail_on_wps_complete = 0; 5343 wpa_s->global->pending_p2ps_group = 0; 5344 wpa_s->global->pending_p2ps_group_freq = 0; 5345 wpa_s->p2ps_method_config_any = 0; 5346 5347 if (go_intent < 0) 5348 go_intent = wpa_s->conf->p2p_go_intent; 5349 5350 if (!auth) 5351 wpa_s->p2p_long_listen = 0; 5352 5353 wpa_s->p2p_wps_method = wps_method; 5354 wpa_s->p2p_persistent_group = !!persistent_group; 5355 wpa_s->p2p_persistent_id = persistent_id; 5356 wpa_s->p2p_go_intent = go_intent; 5357 wpa_s->p2p_connect_freq = freq; 5358 wpa_s->p2p_fallback_to_go_neg = 0; 5359 wpa_s->p2p_pd_before_go_neg = !!pd; 5360 wpa_s->p2p_go_ht40 = !!ht40; 5361 wpa_s->p2p_go_vht = !!vht; 5362 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5363 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5364 5365 if (pin) 5366 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5367 else if (wps_method == WPS_PIN_DISPLAY) { 5368 if (wps_generate_pin((unsigned int *) &ret) < 0) 5369 return -1; 5370 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5371 "%08d", ret); 5372 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5373 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5374 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5375 wpa_s->p2p_pin); 5376 } else 5377 wpa_s->p2p_pin[0] = '\0'; 5378 5379 if (join || auto_join) { 5380 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5381 if (auth) { 5382 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5383 "connect a running group from " MACSTR, 5384 MAC2STR(peer_addr)); 5385 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5386 return ret; 5387 } 5388 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5389 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5390 iface_addr) < 0) { 5391 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5392 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5393 dev_addr); 5394 } 5395 if (auto_join) { 5396 os_get_reltime(&wpa_s->p2p_auto_started); 5397 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5398 "%ld.%06ld", 5399 wpa_s->p2p_auto_started.sec, 5400 wpa_s->p2p_auto_started.usec); 5401 } 5402 wpa_s->user_initiated_pd = 1; 5403 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5404 auto_join, freq, 5405 group_ssid, group_ssid_len) < 0) 5406 return -1; 5407 return ret; 5408 } 5409 5410 size = P2P_MAX_PREF_CHANNELS; 5411 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5412 go_intent == 15, pref_freq_list, &size); 5413 if (res) 5414 return res; 5415 wpas_p2p_set_own_freq_preference(wpa_s, 5416 force_freq ? force_freq : pref_freq); 5417 5418 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5419 5420 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5421 5422 if (wpa_s->create_p2p_iface) { 5423 /* Prepare to add a new interface for the group */ 5424 iftype = WPA_IF_P2P_GROUP; 5425 if (go_intent == 15) 5426 iftype = WPA_IF_P2P_GO; 5427 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5428 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5429 "interface for the group"); 5430 return -1; 5431 } 5432 5433 if_addr = wpa_s->pending_interface_addr; 5434 } else { 5435 if (wpa_s->p2p_mgmt) 5436 if_addr = wpa_s->parent->own_addr; 5437 else 5438 if_addr = wpa_s->own_addr; 5439 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5440 } 5441 5442 if (auth) { 5443 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5444 go_intent, if_addr, 5445 force_freq, persistent_group, ssid, 5446 pref_freq) < 0) 5447 return -1; 5448 return ret; 5449 } 5450 5451 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5452 go_intent, if_addr, force_freq, 5453 persistent_group, ssid, pref_freq) < 0) { 5454 if (wpa_s->create_p2p_iface) 5455 wpas_p2p_remove_pending_group_interface(wpa_s); 5456 return -1; 5457 } 5458 return ret; 5459 } 5460 5461 5462 /** 5463 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5464 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5465 * @freq: Frequency of the channel in MHz 5466 * @duration: Duration of the stay on the channel in milliseconds 5467 * 5468 * This callback is called when the driver indicates that it has started the 5469 * requested remain-on-channel duration. 5470 */ 5471 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5472 unsigned int freq, unsigned int duration) 5473 { 5474 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5475 return; 5476 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)", 5477 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5478 wpa_s->roc_waiting_drv_freq, freq, duration); 5479 if (wpa_s->off_channel_freq && 5480 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5481 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5482 wpa_s->pending_listen_duration); 5483 wpa_s->pending_listen_freq = 0; 5484 } else { 5485 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5486 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5487 freq, duration); 5488 } 5489 } 5490 5491 5492 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5493 { 5494 /* Limit maximum Listen state time based on driver limitation. */ 5495 if (timeout > wpa_s->max_remain_on_chan) 5496 timeout = wpa_s->max_remain_on_chan; 5497 5498 return p2p_listen(wpa_s->global->p2p, timeout); 5499 } 5500 5501 5502 /** 5503 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5504 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5505 * @freq: Frequency of the channel in MHz 5506 * 5507 * This callback is called when the driver indicates that a remain-on-channel 5508 * operation has been completed, i.e., the duration on the requested channel 5509 * has timed out. 5510 */ 5511 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5512 unsigned int freq) 5513 { 5514 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5515 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5516 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5517 wpas_p2p_listen_work_done(wpa_s); 5518 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5519 return; 5520 if (wpa_s->p2p_long_listen > 0) 5521 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5522 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5523 return; /* P2P module started a new operation */ 5524 if (offchannel_pending_action_tx(wpa_s)) 5525 return; 5526 if (wpa_s->p2p_long_listen > 0) { 5527 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5528 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5529 } else { 5530 /* 5531 * When listen duration is over, stop listen & update p2p_state 5532 * to IDLE. 5533 */ 5534 p2p_stop_listen(wpa_s->global->p2p); 5535 } 5536 } 5537 5538 5539 /** 5540 * wpas_p2p_group_remove - Remove a P2P group 5541 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5542 * @ifname: Network interface name of the group interface or "*" to remove all 5543 * groups 5544 * Returns: 0 on success, -1 on failure 5545 * 5546 * This function is used to remove a P2P group. This can be used to disconnect 5547 * from a group in which the local end is a P2P Client or to end a P2P Group in 5548 * case the local end is the Group Owner. If a virtual network interface was 5549 * created for this group, that interface will be removed. Otherwise, only the 5550 * configured P2P group network will be removed from the interface. 5551 */ 5552 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5553 { 5554 struct wpa_global *global = wpa_s->global; 5555 struct wpa_supplicant *calling_wpa_s = wpa_s; 5556 5557 if (os_strcmp(ifname, "*") == 0) { 5558 struct wpa_supplicant *prev; 5559 wpa_s = global->ifaces; 5560 while (wpa_s) { 5561 prev = wpa_s; 5562 wpa_s = wpa_s->next; 5563 if (prev->p2p_group_interface != 5564 NOT_P2P_GROUP_INTERFACE || 5565 (prev->current_ssid && 5566 prev->current_ssid->p2p_group)) 5567 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5568 } 5569 return 0; 5570 } 5571 5572 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5573 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5574 break; 5575 } 5576 5577 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5578 } 5579 5580 5581 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5582 { 5583 unsigned int r; 5584 5585 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5586 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5587 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5588 int res; 5589 5590 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5591 &size, pref_freq_list); 5592 if (!res && size > 0) { 5593 i = 0; 5594 while (wpas_p2p_disallowed_freq(wpa_s->global, 5595 pref_freq_list[i]) && 5596 i < size) { 5597 wpa_printf(MSG_DEBUG, 5598 "P2P: preferred_freq_list[%d]=%d is disallowed", 5599 i, pref_freq_list[i]); 5600 i++; 5601 } 5602 if (i != size) { 5603 freq = pref_freq_list[i]; 5604 wpa_printf(MSG_DEBUG, 5605 "P2P: Using preferred_freq_list[%d]=%d", 5606 i, freq); 5607 } else { 5608 wpa_printf(MSG_DEBUG, 5609 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5610 } 5611 } else { 5612 wpa_printf(MSG_DEBUG, 5613 "P2P: No preferred frequency list available"); 5614 } 5615 } 5616 5617 if (freq == 2) { 5618 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5619 "band"); 5620 if (wpa_s->best_24_freq > 0 && 5621 p2p_supported_freq_go(wpa_s->global->p2p, 5622 wpa_s->best_24_freq)) { 5623 freq = wpa_s->best_24_freq; 5624 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5625 "channel: %d MHz", freq); 5626 } else { 5627 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5628 return -1; 5629 freq = 2412 + (r % 3) * 25; 5630 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5631 "channel: %d MHz", freq); 5632 } 5633 } 5634 5635 if (freq == 5) { 5636 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5637 "band"); 5638 if (wpa_s->best_5_freq > 0 && 5639 p2p_supported_freq_go(wpa_s->global->p2p, 5640 wpa_s->best_5_freq)) { 5641 freq = wpa_s->best_5_freq; 5642 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5643 "channel: %d MHz", freq); 5644 } else { 5645 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5646 return -1; 5647 freq = 5180 + (r % 4) * 20; 5648 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5649 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5650 "5 GHz channel for P2P group"); 5651 return -1; 5652 } 5653 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5654 "channel: %d MHz", freq); 5655 } 5656 } 5657 5658 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5659 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5660 ieee80211_is_dfs(freq)) { 5661 /* 5662 * If freq is a DFS channel and DFS is offloaded to the 5663 * driver, allow P2P GO to use it. 5664 */ 5665 wpa_printf(MSG_DEBUG, "P2P: " 5666 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5667 __func__, freq); 5668 return freq; 5669 } 5670 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5671 "(%u MHz) is not supported for P2P uses", 5672 freq); 5673 return -1; 5674 } 5675 5676 return freq; 5677 } 5678 5679 5680 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5681 const struct p2p_channels *channels, 5682 int freq) 5683 { 5684 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5685 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5686 freq_included(wpa_s, channels, freq)) 5687 return 1; 5688 return 0; 5689 } 5690 5691 5692 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5693 struct p2p_go_neg_results *params, 5694 const struct p2p_channels *channels) 5695 { 5696 unsigned int i, r; 5697 5698 /* first try some random selection of the social channels */ 5699 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5700 return; 5701 5702 for (i = 0; i < 3; i++) { 5703 params->freq = 2412 + ((r + i) % 3) * 25; 5704 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5705 goto out; 5706 } 5707 5708 /* try all other channels in operating class 81 */ 5709 for (i = 0; i < 11; i++) { 5710 params->freq = 2412 + i * 5; 5711 5712 /* skip social channels; covered in the previous loop */ 5713 if (params->freq == 2412 || 5714 params->freq == 2437 || 5715 params->freq == 2462) 5716 continue; 5717 5718 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5719 goto out; 5720 } 5721 5722 /* try all channels in operating class 115 */ 5723 for (i = 0; i < 4; i++) { 5724 params->freq = 5180 + i * 20; 5725 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5726 freq_included(wpa_s, channels, params->freq) && 5727 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5728 goto out; 5729 } 5730 5731 /* try all channels in operating class 124 */ 5732 for (i = 0; i < 4; i++) { 5733 params->freq = 5745 + i * 20; 5734 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5735 freq_included(wpa_s, channels, params->freq) && 5736 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5737 goto out; 5738 } 5739 5740 /* try social channel class 180 channel 2 */ 5741 params->freq = 58320 + 1 * 2160; 5742 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5743 freq_included(wpa_s, channels, params->freq) && 5744 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5745 goto out; 5746 5747 /* try all channels in reg. class 180 */ 5748 for (i = 0; i < 4; i++) { 5749 params->freq = 58320 + i * 2160; 5750 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5751 freq_included(wpa_s, channels, params->freq) && 5752 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5753 goto out; 5754 } 5755 5756 params->freq = 0; 5757 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5758 return; 5759 out: 5760 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5761 params->freq); 5762 } 5763 5764 5765 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5766 struct p2p_go_neg_results *params, 5767 int freq, int vht_center_freq2, int ht40, 5768 int vht, int max_oper_chwidth, 5769 const struct p2p_channels *channels) 5770 { 5771 struct wpa_used_freq_data *freqs; 5772 unsigned int cand; 5773 unsigned int num, i; 5774 int ignore_no_freqs = 0; 5775 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0; 5776 5777 os_memset(params, 0, sizeof(*params)); 5778 params->role_go = 1; 5779 params->ht40 = ht40; 5780 params->vht = vht; 5781 params->max_oper_chwidth = max_oper_chwidth; 5782 params->vht_center_freq2 = vht_center_freq2; 5783 5784 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5785 sizeof(struct wpa_used_freq_data)); 5786 if (!freqs) 5787 return -1; 5788 5789 num = get_shared_radio_freqs_data(wpa_s, freqs, 5790 wpa_s->num_multichan_concurrent); 5791 5792 if (wpa_s->current_ssid && 5793 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5794 wpa_s->wpa_state == WPA_COMPLETED) { 5795 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5796 __func__); 5797 5798 /* 5799 * If the frequency selection is done for an active P2P GO that 5800 * is not sharing a frequency, allow to select a new frequency 5801 * even if there are no unused frequencies as we are about to 5802 * move the P2P GO so its frequency can be re-used. 5803 */ 5804 for (i = 0; i < num; i++) { 5805 if (freqs[i].freq == wpa_s->current_ssid->frequency && 5806 freqs[i].flags == 0) { 5807 ignore_no_freqs = 1; 5808 break; 5809 } 5810 } 5811 } 5812 5813 /* try using the forced freq */ 5814 if (freq) { 5815 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) { 5816 wpa_printf(MSG_DEBUG, 5817 "P2P: Forced GO freq %d MHz not accepted", 5818 freq); 5819 goto fail; 5820 } 5821 5822 for (i = 0; i < num; i++) { 5823 if (freqs[i].freq == freq) { 5824 wpa_printf(MSG_DEBUG, 5825 "P2P: forced freq (%d MHz) is also shared", 5826 freq); 5827 params->freq = freq; 5828 goto success; 5829 } 5830 } 5831 5832 if (!ignore_no_freqs && !unused_channels) { 5833 wpa_printf(MSG_DEBUG, 5834 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 5835 freq); 5836 goto fail; 5837 } 5838 5839 wpa_printf(MSG_DEBUG, 5840 "P2P: force GO freq (%d MHz) on a free channel", 5841 freq); 5842 params->freq = freq; 5843 goto success; 5844 } 5845 5846 /* consider using one of the shared frequencies */ 5847 if (num && 5848 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) { 5849 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5850 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5851 wpa_printf(MSG_DEBUG, 5852 "P2P: Use shared freq (%d MHz) for GO", 5853 cand); 5854 params->freq = cand; 5855 goto success; 5856 } 5857 5858 /* try using one of the shared freqs */ 5859 for (i = 0; i < num; i++) { 5860 if (wpas_p2p_supported_freq_go(wpa_s, channels, 5861 freqs[i].freq)) { 5862 wpa_printf(MSG_DEBUG, 5863 "P2P: Use shared freq (%d MHz) for GO", 5864 freqs[i].freq); 5865 params->freq = freqs[i].freq; 5866 goto success; 5867 } 5868 } 5869 } 5870 5871 if (!ignore_no_freqs && !unused_channels) { 5872 wpa_printf(MSG_DEBUG, 5873 "P2P: Cannot force GO on any of the channels we are already using"); 5874 goto fail; 5875 } 5876 5877 /* try using the setting from the configuration file */ 5878 if (wpa_s->conf->p2p_oper_reg_class == 81 && 5879 wpa_s->conf->p2p_oper_channel >= 1 && 5880 wpa_s->conf->p2p_oper_channel <= 11 && 5881 wpas_p2p_supported_freq_go( 5882 wpa_s, channels, 5883 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 5884 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 5885 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5886 "frequency %d MHz", params->freq); 5887 goto success; 5888 } 5889 5890 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 5891 wpa_s->conf->p2p_oper_reg_class == 116 || 5892 wpa_s->conf->p2p_oper_reg_class == 117 || 5893 wpa_s->conf->p2p_oper_reg_class == 124 || 5894 wpa_s->conf->p2p_oper_reg_class == 125 || 5895 wpa_s->conf->p2p_oper_reg_class == 126 || 5896 wpa_s->conf->p2p_oper_reg_class == 127) && 5897 wpas_p2p_supported_freq_go(wpa_s, channels, 5898 5000 + 5899 5 * wpa_s->conf->p2p_oper_channel)) { 5900 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 5901 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5902 "frequency %d MHz", params->freq); 5903 goto success; 5904 } 5905 5906 /* Try using best channels */ 5907 if (wpa_s->conf->p2p_oper_channel == 0 && 5908 wpa_s->best_overall_freq > 0 && 5909 wpas_p2p_supported_freq_go(wpa_s, channels, 5910 wpa_s->best_overall_freq)) { 5911 params->freq = wpa_s->best_overall_freq; 5912 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5913 "channel %d MHz", params->freq); 5914 goto success; 5915 } 5916 5917 if (wpa_s->conf->p2p_oper_channel == 0 && 5918 wpa_s->best_24_freq > 0 && 5919 wpas_p2p_supported_freq_go(wpa_s, channels, 5920 wpa_s->best_24_freq)) { 5921 params->freq = wpa_s->best_24_freq; 5922 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 5923 "channel %d MHz", params->freq); 5924 goto success; 5925 } 5926 5927 if (wpa_s->conf->p2p_oper_channel == 0 && 5928 wpa_s->best_5_freq > 0 && 5929 wpas_p2p_supported_freq_go(wpa_s, channels, 5930 wpa_s->best_5_freq)) { 5931 params->freq = wpa_s->best_5_freq; 5932 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 5933 "channel %d MHz", params->freq); 5934 goto success; 5935 } 5936 5937 /* try using preferred channels */ 5938 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 5939 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5940 params->freq = cand; 5941 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 5942 "channels", params->freq); 5943 goto success; 5944 } 5945 5946 /* Try using one of the group common freqs */ 5947 if (wpa_s->p2p_group_common_freqs) { 5948 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 5949 cand = wpa_s->p2p_group_common_freqs[i]; 5950 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5951 params->freq = cand; 5952 wpa_printf(MSG_DEBUG, 5953 "P2P: Use freq %d MHz common with the peer", 5954 params->freq); 5955 goto success; 5956 } 5957 } 5958 } 5959 5960 /* no preference, select some channel */ 5961 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 5962 5963 if (params->freq == 0) { 5964 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 5965 goto fail; 5966 } 5967 5968 success: 5969 os_free(freqs); 5970 return 0; 5971 fail: 5972 os_free(freqs); 5973 return -1; 5974 } 5975 5976 5977 static struct wpa_supplicant * 5978 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 5979 int go) 5980 { 5981 struct wpa_supplicant *group_wpa_s; 5982 5983 if (!wpas_p2p_create_iface(wpa_s)) { 5984 if (wpa_s->p2p_mgmt) { 5985 /* 5986 * We may be called on the p2p_dev interface which 5987 * cannot be used for group operations, so always use 5988 * the primary interface. 5989 */ 5990 wpa_s->parent->p2pdev = wpa_s; 5991 wpa_s = wpa_s->parent; 5992 } 5993 wpa_dbg(wpa_s, MSG_DEBUG, 5994 "P2P: Use primary interface for group operations"); 5995 wpa_s->p2p_first_connection_timeout = 0; 5996 if (wpa_s != wpa_s->p2pdev) 5997 wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev); 5998 return wpa_s; 5999 } 6000 6001 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 6002 WPA_IF_P2P_CLIENT) < 0) { 6003 wpa_msg_global(wpa_s, MSG_ERROR, 6004 "P2P: Failed to add group interface"); 6005 return NULL; 6006 } 6007 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 6008 if (group_wpa_s == NULL) { 6009 wpa_msg_global(wpa_s, MSG_ERROR, 6010 "P2P: Failed to initialize group interface"); 6011 wpas_p2p_remove_pending_group_interface(wpa_s); 6012 return NULL; 6013 } 6014 6015 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 6016 group_wpa_s->ifname); 6017 group_wpa_s->p2p_first_connection_timeout = 0; 6018 return group_wpa_s; 6019 } 6020 6021 6022 /** 6023 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 6024 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 6025 * @persistent_group: Whether to create a persistent group 6026 * @freq: Frequency for the group or 0 to indicate no hardcoding 6027 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 6028 * @ht40: Start GO with 40 MHz channel width 6029 * @vht: Start GO with VHT support 6030 * @vht_chwidth: channel bandwidth for GO operating with VHT support 6031 * Returns: 0 on success, -1 on failure 6032 * 6033 * This function creates a new P2P group with the local end as the Group Owner, 6034 * i.e., without using Group Owner Negotiation. 6035 */ 6036 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 6037 int freq, int vht_center_freq2, int ht40, int vht, 6038 int max_oper_chwidth) 6039 { 6040 struct p2p_go_neg_results params; 6041 6042 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6043 return -1; 6044 6045 os_free(wpa_s->global->add_psk); 6046 wpa_s->global->add_psk = NULL; 6047 6048 /* Make sure we are not running find during connection establishment */ 6049 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6050 wpas_p2p_stop_find_oper(wpa_s); 6051 6052 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6053 if (freq < 0) 6054 return -1; 6055 6056 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6057 ht40, vht, max_oper_chwidth, NULL)) 6058 return -1; 6059 if (params.freq && 6060 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 6061 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 6062 ieee80211_is_dfs(params.freq)) { 6063 /* 6064 * If freq is a DFS channel and DFS is offloaded to the 6065 * driver, allow P2P GO to use it. 6066 */ 6067 wpa_printf(MSG_DEBUG, 6068 "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver", 6069 __func__, params.freq); 6070 } else { 6071 wpa_printf(MSG_DEBUG, 6072 "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses", 6073 params.freq); 6074 return -1; 6075 } 6076 } 6077 p2p_go_params(wpa_s->global->p2p, ¶ms); 6078 params.persistent_group = persistent_group; 6079 6080 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6081 if (wpa_s == NULL) 6082 return -1; 6083 wpas_start_wps_go(wpa_s, ¶ms, 0); 6084 6085 return 0; 6086 } 6087 6088 6089 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6090 struct wpa_ssid *params, int addr_allocated, 6091 int freq, int force_scan) 6092 { 6093 struct wpa_ssid *ssid; 6094 6095 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6096 if (wpa_s == NULL) 6097 return -1; 6098 if (force_scan) 6099 os_get_reltime(&wpa_s->scan_min_time); 6100 wpa_s->p2p_last_4way_hs_fail = NULL; 6101 6102 wpa_supplicant_ap_deinit(wpa_s); 6103 6104 ssid = wpa_config_add_network(wpa_s->conf); 6105 if (ssid == NULL) 6106 return -1; 6107 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6108 wpa_config_set_network_defaults(ssid); 6109 ssid->temporary = 1; 6110 ssid->proto = WPA_PROTO_RSN; 6111 ssid->pbss = params->pbss; 6112 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP : 6113 WPA_CIPHER_CCMP; 6114 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 6115 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6116 ssid->ssid = os_malloc(params->ssid_len); 6117 if (ssid->ssid == NULL) { 6118 wpa_config_remove_network(wpa_s->conf, ssid->id); 6119 return -1; 6120 } 6121 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6122 ssid->ssid_len = params->ssid_len; 6123 ssid->p2p_group = 1; 6124 ssid->export_keys = 1; 6125 if (params->psk_set) { 6126 os_memcpy(ssid->psk, params->psk, 32); 6127 ssid->psk_set = 1; 6128 } 6129 if (params->passphrase) 6130 ssid->passphrase = os_strdup(params->passphrase); 6131 6132 wpa_s->show_group_started = 1; 6133 wpa_s->p2p_in_invitation = 1; 6134 wpa_s->p2p_invite_go_freq = freq; 6135 wpa_s->p2p_go_group_formation_completed = 0; 6136 wpa_s->global->p2p_group_formation = wpa_s; 6137 6138 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6139 NULL); 6140 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6141 wpas_p2p_group_formation_timeout, 6142 wpa_s->p2pdev, NULL); 6143 wpa_supplicant_select_network(wpa_s, ssid); 6144 6145 return 0; 6146 } 6147 6148 6149 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6150 struct wpa_ssid *ssid, int addr_allocated, 6151 int force_freq, int neg_freq, 6152 int vht_center_freq2, int ht40, 6153 int vht, int max_oper_chwidth, 6154 const struct p2p_channels *channels, 6155 int connection_timeout, int force_scan) 6156 { 6157 struct p2p_go_neg_results params; 6158 int go = 0, freq; 6159 6160 if (ssid->disabled != 2 || ssid->ssid == NULL) 6161 return -1; 6162 6163 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6164 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6165 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6166 "already running"); 6167 if (go == 0 && 6168 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6169 wpa_s->p2pdev, NULL)) { 6170 /* 6171 * This can happen if Invitation Response frame was lost 6172 * and the peer (GO of a persistent group) tries to 6173 * invite us again. Reschedule the timeout to avoid 6174 * terminating the wait for the connection too early 6175 * since we now know that the peer is still trying to 6176 * invite us instead of having already started the GO. 6177 */ 6178 wpa_printf(MSG_DEBUG, 6179 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6180 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6181 wpas_p2p_group_formation_timeout, 6182 wpa_s->p2pdev, NULL); 6183 } 6184 return 0; 6185 } 6186 6187 os_free(wpa_s->global->add_psk); 6188 wpa_s->global->add_psk = NULL; 6189 6190 /* Make sure we are not running find during connection establishment */ 6191 wpas_p2p_stop_find_oper(wpa_s); 6192 6193 wpa_s->p2p_fallback_to_go_neg = 0; 6194 6195 if (ssid->mode == WPAS_MODE_P2P_GO) { 6196 if (force_freq > 0) { 6197 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6198 if (freq < 0) 6199 return -1; 6200 } else { 6201 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6202 if (freq < 0 || 6203 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6204 freq = 0; 6205 } 6206 } else if (ssid->mode == WPAS_MODE_INFRA) { 6207 freq = neg_freq; 6208 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6209 struct os_reltime now; 6210 struct wpa_bss *bss = 6211 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6212 6213 os_get_reltime(&now); 6214 if (bss && 6215 !os_reltime_expired(&now, &bss->last_update, 5) && 6216 freq_included(wpa_s, channels, bss->freq)) 6217 freq = bss->freq; 6218 else 6219 freq = 0; 6220 } 6221 6222 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6223 force_scan); 6224 } else { 6225 return -1; 6226 } 6227 6228 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6229 ht40, vht, max_oper_chwidth, channels)) 6230 return -1; 6231 6232 params.role_go = 1; 6233 params.psk_set = ssid->psk_set; 6234 if (params.psk_set) 6235 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6236 if (ssid->passphrase) { 6237 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6238 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6239 "persistent group"); 6240 return -1; 6241 } 6242 os_strlcpy(params.passphrase, ssid->passphrase, 6243 sizeof(params.passphrase)); 6244 } 6245 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6246 params.ssid_len = ssid->ssid_len; 6247 params.persistent_group = 1; 6248 6249 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6250 if (wpa_s == NULL) 6251 return -1; 6252 6253 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6254 6255 wpa_s->p2p_first_connection_timeout = connection_timeout; 6256 wpas_start_wps_go(wpa_s, ¶ms, 0); 6257 6258 return 0; 6259 } 6260 6261 6262 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6263 struct wpabuf *proberesp_ies) 6264 { 6265 struct wpa_supplicant *wpa_s = ctx; 6266 if (wpa_s->ap_iface) { 6267 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6268 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6269 wpabuf_free(beacon_ies); 6270 wpabuf_free(proberesp_ies); 6271 return; 6272 } 6273 if (beacon_ies) { 6274 wpabuf_free(hapd->p2p_beacon_ie); 6275 hapd->p2p_beacon_ie = beacon_ies; 6276 } 6277 wpabuf_free(hapd->p2p_probe_resp_ie); 6278 hapd->p2p_probe_resp_ie = proberesp_ies; 6279 } else { 6280 wpabuf_free(beacon_ies); 6281 wpabuf_free(proberesp_ies); 6282 } 6283 wpa_supplicant_ap_update_beacon(wpa_s); 6284 } 6285 6286 6287 static void wpas_p2p_idle_update(void *ctx, int idle) 6288 { 6289 struct wpa_supplicant *wpa_s = ctx; 6290 if (!wpa_s->ap_iface) 6291 return; 6292 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6293 if (idle) { 6294 if (wpa_s->global->p2p_fail_on_wps_complete && 6295 wpa_s->p2p_in_provisioning) { 6296 wpas_p2p_grpform_fail_after_wps(wpa_s); 6297 return; 6298 } 6299 wpas_p2p_set_group_idle_timeout(wpa_s); 6300 } else 6301 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6302 } 6303 6304 6305 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6306 struct wpa_ssid *ssid) 6307 { 6308 struct p2p_group *group; 6309 struct p2p_group_config *cfg; 6310 6311 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6312 return NULL; 6313 6314 cfg = os_zalloc(sizeof(*cfg)); 6315 if (cfg == NULL) 6316 return NULL; 6317 6318 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6319 cfg->persistent_group = 2; 6320 else if (ssid->p2p_persistent_group) 6321 cfg->persistent_group = 1; 6322 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6323 if (wpa_s->max_stations && 6324 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6325 cfg->max_clients = wpa_s->max_stations; 6326 else 6327 cfg->max_clients = wpa_s->conf->max_num_sta; 6328 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6329 cfg->ssid_len = ssid->ssid_len; 6330 cfg->freq = ssid->frequency; 6331 cfg->cb_ctx = wpa_s; 6332 cfg->ie_update = wpas_p2p_ie_update; 6333 cfg->idle_update = wpas_p2p_idle_update; 6334 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start) 6335 != 0; 6336 6337 group = p2p_group_init(wpa_s->global->p2p, cfg); 6338 if (group == NULL) 6339 os_free(cfg); 6340 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6341 p2p_group_notif_formation_done(group); 6342 wpa_s->p2p_group = group; 6343 return group; 6344 } 6345 6346 6347 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6348 int registrar) 6349 { 6350 struct wpa_ssid *ssid = wpa_s->current_ssid; 6351 6352 if (!wpa_s->p2p_in_provisioning) { 6353 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6354 "provisioning not in progress"); 6355 return; 6356 } 6357 6358 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6359 u8 go_dev_addr[ETH_ALEN]; 6360 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6361 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6362 ssid->ssid_len); 6363 /* Clear any stored provisioning info */ 6364 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6365 } 6366 6367 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6368 NULL); 6369 wpa_s->p2p_go_group_formation_completed = 1; 6370 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6371 /* 6372 * Use a separate timeout for initial data connection to 6373 * complete to allow the group to be removed automatically if 6374 * something goes wrong in this step before the P2P group idle 6375 * timeout mechanism is taken into use. 6376 */ 6377 wpa_dbg(wpa_s, MSG_DEBUG, 6378 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6379 P2P_MAX_INITIAL_CONN_WAIT); 6380 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6381 wpas_p2p_group_formation_timeout, 6382 wpa_s->p2pdev, NULL); 6383 /* Complete group formation on successful data connection. */ 6384 wpa_s->p2p_go_group_formation_completed = 0; 6385 } else if (ssid) { 6386 /* 6387 * Use a separate timeout for initial data connection to 6388 * complete to allow the group to be removed automatically if 6389 * the client does not complete data connection successfully. 6390 */ 6391 wpa_dbg(wpa_s, MSG_DEBUG, 6392 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6393 P2P_MAX_INITIAL_CONN_WAIT_GO); 6394 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6395 wpas_p2p_group_formation_timeout, 6396 wpa_s->p2pdev, NULL); 6397 /* 6398 * Complete group formation on first successful data connection 6399 */ 6400 wpa_s->p2p_go_group_formation_completed = 0; 6401 } 6402 if (wpa_s->global->p2p) 6403 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6404 wpas_group_formation_completed(wpa_s, 1, 0); 6405 } 6406 6407 6408 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6409 struct wps_event_fail *fail) 6410 { 6411 if (!wpa_s->p2p_in_provisioning) { 6412 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6413 "provisioning not in progress"); 6414 return; 6415 } 6416 6417 if (wpa_s->go_params) { 6418 p2p_clear_provisioning_info( 6419 wpa_s->global->p2p, 6420 wpa_s->go_params->peer_device_addr); 6421 } 6422 6423 wpas_notify_p2p_wps_failed(wpa_s, fail); 6424 6425 if (wpa_s == wpa_s->global->p2p_group_formation) { 6426 /* 6427 * Allow some time for the failed WPS negotiation exchange to 6428 * complete, but remove the group since group formation cannot 6429 * succeed after provisioning failure. 6430 */ 6431 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6432 wpa_s->global->p2p_fail_on_wps_complete = 1; 6433 eloop_deplete_timeout(0, 50000, 6434 wpas_p2p_group_formation_timeout, 6435 wpa_s->p2pdev, NULL); 6436 } 6437 } 6438 6439 6440 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6441 { 6442 if (!wpa_s->global->p2p_fail_on_wps_complete || 6443 !wpa_s->p2p_in_provisioning) 6444 return 0; 6445 6446 wpas_p2p_grpform_fail_after_wps(wpa_s); 6447 6448 return 1; 6449 } 6450 6451 6452 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6453 const char *config_method, 6454 enum wpas_p2p_prov_disc_use use, 6455 struct p2ps_provision *p2ps_prov) 6456 { 6457 u16 config_methods; 6458 6459 wpa_s->global->pending_p2ps_group = 0; 6460 wpa_s->global->pending_p2ps_group_freq = 0; 6461 wpa_s->p2p_fallback_to_go_neg = 0; 6462 wpa_s->pending_pd_use = NORMAL_PD; 6463 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6464 p2ps_prov->conncap = p2ps_group_capability( 6465 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6466 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6467 6468 wpa_printf(MSG_DEBUG, 6469 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6470 __func__, p2ps_prov->conncap, 6471 p2ps_prov->adv_id, p2ps_prov->conncap, 6472 p2ps_prov->status, p2ps_prov->info); 6473 6474 config_methods = 0; 6475 } else if (os_strncmp(config_method, "display", 7) == 0) 6476 config_methods = WPS_CONFIG_DISPLAY; 6477 else if (os_strncmp(config_method, "keypad", 6) == 0) 6478 config_methods = WPS_CONFIG_KEYPAD; 6479 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6480 os_strncmp(config_method, "pushbutton", 10) == 0) 6481 config_methods = WPS_CONFIG_PUSHBUTTON; 6482 else { 6483 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6484 os_free(p2ps_prov); 6485 return -1; 6486 } 6487 6488 if (use == WPAS_P2P_PD_AUTO) { 6489 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6490 wpa_s->pending_pd_config_methods = config_methods; 6491 wpa_s->p2p_auto_pd = 1; 6492 wpa_s->p2p_auto_join = 0; 6493 wpa_s->pending_pd_before_join = 0; 6494 wpa_s->auto_pd_scan_retry = 0; 6495 wpas_p2p_stop_find(wpa_s); 6496 wpa_s->p2p_join_scan_count = 0; 6497 os_get_reltime(&wpa_s->p2p_auto_started); 6498 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6499 wpa_s->p2p_auto_started.sec, 6500 wpa_s->p2p_auto_started.usec); 6501 wpas_p2p_join_scan(wpa_s, NULL); 6502 return 0; 6503 } 6504 6505 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6506 os_free(p2ps_prov); 6507 return -1; 6508 } 6509 6510 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6511 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6512 0, 1); 6513 } 6514 6515 6516 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6517 char *end) 6518 { 6519 return p2p_scan_result_text(ies, ies_len, buf, end); 6520 } 6521 6522 6523 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6524 { 6525 if (!offchannel_pending_action_tx(wpa_s)) 6526 return; 6527 6528 if (wpa_s->p2p_send_action_work) { 6529 wpas_p2p_free_send_action_work(wpa_s); 6530 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 6531 wpa_s, NULL); 6532 offchannel_send_action_done(wpa_s); 6533 } 6534 6535 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6536 "operation request"); 6537 offchannel_clear_pending_action_tx(wpa_s); 6538 } 6539 6540 6541 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6542 enum p2p_discovery_type type, 6543 unsigned int num_req_dev_types, const u8 *req_dev_types, 6544 const u8 *dev_id, unsigned int search_delay, 6545 u8 seek_cnt, const char **seek_string, int freq) 6546 { 6547 wpas_p2p_clear_pending_action_tx(wpa_s); 6548 wpa_s->p2p_long_listen = 0; 6549 6550 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6551 wpa_s->p2p_in_provisioning) 6552 return -1; 6553 6554 wpa_supplicant_cancel_sched_scan(wpa_s); 6555 6556 return p2p_find(wpa_s->global->p2p, timeout, type, 6557 num_req_dev_types, req_dev_types, dev_id, 6558 search_delay, seek_cnt, seek_string, freq); 6559 } 6560 6561 6562 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6563 struct wpa_scan_results *scan_res) 6564 { 6565 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6566 6567 if (wpa_s->p2p_scan_work) { 6568 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6569 wpa_s->p2p_scan_work = NULL; 6570 radio_work_done(work); 6571 } 6572 6573 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6574 return; 6575 6576 /* 6577 * Indicate that results have been processed so that the P2P module can 6578 * continue pending tasks. 6579 */ 6580 p2p_scan_res_handled(wpa_s->global->p2p); 6581 } 6582 6583 6584 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6585 { 6586 wpas_p2p_clear_pending_action_tx(wpa_s); 6587 wpa_s->p2p_long_listen = 0; 6588 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6589 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6590 6591 if (wpa_s->global->p2p) 6592 p2p_stop_find(wpa_s->global->p2p); 6593 6594 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6595 wpa_printf(MSG_DEBUG, 6596 "P2P: Do not consider the scan results after stop_find"); 6597 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6598 } 6599 } 6600 6601 6602 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6603 { 6604 wpas_p2p_stop_find_oper(wpa_s); 6605 if (!wpa_s->global->pending_group_iface_for_p2ps) 6606 wpas_p2p_remove_pending_group_interface(wpa_s); 6607 } 6608 6609 6610 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6611 { 6612 struct wpa_supplicant *wpa_s = eloop_ctx; 6613 wpa_s->p2p_long_listen = 0; 6614 } 6615 6616 6617 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6618 { 6619 int res; 6620 6621 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6622 return -1; 6623 6624 wpa_supplicant_cancel_sched_scan(wpa_s); 6625 wpas_p2p_clear_pending_action_tx(wpa_s); 6626 6627 if (timeout == 0) { 6628 /* 6629 * This is a request for unlimited Listen state. However, at 6630 * least for now, this is mapped to a Listen state for one 6631 * hour. 6632 */ 6633 timeout = 3600; 6634 } 6635 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6636 wpa_s->p2p_long_listen = 0; 6637 6638 /* 6639 * Stop previous find/listen operation to avoid trying to request a new 6640 * remain-on-channel operation while the driver is still running the 6641 * previous one. 6642 */ 6643 if (wpa_s->global->p2p) 6644 p2p_stop_find(wpa_s->global->p2p); 6645 6646 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6647 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6648 wpa_s->p2p_long_listen = timeout * 1000; 6649 eloop_register_timeout(timeout, 0, 6650 wpas_p2p_long_listen_timeout, 6651 wpa_s, NULL); 6652 } 6653 6654 return res; 6655 } 6656 6657 6658 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6659 u8 *buf, size_t len, int p2p_group) 6660 { 6661 struct wpabuf *p2p_ie; 6662 int ret; 6663 6664 if (wpa_s->global->p2p_disabled) 6665 return -1; 6666 /* 6667 * Advertize mandatory cross connection capability even on 6668 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6669 */ 6670 if (wpa_s->conf->p2p_disabled && p2p_group) 6671 return -1; 6672 if (wpa_s->global->p2p == NULL) 6673 return -1; 6674 if (bss == NULL) 6675 return -1; 6676 6677 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6678 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6679 p2p_group, p2p_ie); 6680 wpabuf_free(p2p_ie); 6681 6682 return ret; 6683 } 6684 6685 6686 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6687 const u8 *dst, const u8 *bssid, 6688 const u8 *ie, size_t ie_len, 6689 unsigned int rx_freq, int ssi_signal) 6690 { 6691 if (wpa_s->global->p2p_disabled) 6692 return 0; 6693 if (wpa_s->global->p2p == NULL) 6694 return 0; 6695 6696 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6697 ie, ie_len, rx_freq)) { 6698 case P2P_PREQ_NOT_P2P: 6699 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6700 ssi_signal); 6701 /* fall through */ 6702 case P2P_PREQ_MALFORMED: 6703 case P2P_PREQ_NOT_LISTEN: 6704 case P2P_PREQ_NOT_PROCESSED: 6705 default: /* make gcc happy */ 6706 return 0; 6707 case P2P_PREQ_PROCESSED: 6708 return 1; 6709 } 6710 } 6711 6712 6713 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 6714 const u8 *sa, const u8 *bssid, 6715 u8 category, const u8 *data, size_t len, int freq) 6716 { 6717 if (wpa_s->global->p2p_disabled) 6718 return; 6719 if (wpa_s->global->p2p == NULL) 6720 return; 6721 6722 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 6723 freq); 6724 } 6725 6726 6727 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 6728 { 6729 unsigned int bands; 6730 6731 if (wpa_s->global->p2p_disabled) 6732 return; 6733 if (wpa_s->global->p2p == NULL) 6734 return; 6735 6736 bands = wpas_get_bands(wpa_s, NULL); 6737 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 6738 } 6739 6740 6741 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 6742 { 6743 p2p_group_deinit(wpa_s->p2p_group); 6744 wpa_s->p2p_group = NULL; 6745 6746 wpa_s->ap_configured_cb = NULL; 6747 wpa_s->ap_configured_cb_ctx = NULL; 6748 wpa_s->ap_configured_cb_data = NULL; 6749 wpa_s->connect_without_scan = NULL; 6750 } 6751 6752 6753 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 6754 { 6755 wpa_s->p2p_long_listen = 0; 6756 6757 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6758 return -1; 6759 6760 return p2p_reject(wpa_s->global->p2p, addr); 6761 } 6762 6763 6764 /* Invite to reinvoke a persistent group */ 6765 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6766 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 6767 int vht_center_freq2, int ht40, int vht, int max_chwidth, 6768 int pref_freq) 6769 { 6770 enum p2p_invite_role role; 6771 u8 *bssid = NULL; 6772 int force_freq = 0; 6773 int res; 6774 int no_pref_freq_given = pref_freq == 0; 6775 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6776 6777 wpa_s->global->p2p_invite_group = NULL; 6778 if (peer_addr) 6779 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 6780 else 6781 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 6782 6783 wpa_s->p2p_persistent_go_freq = freq; 6784 wpa_s->p2p_go_ht40 = !!ht40; 6785 wpa_s->p2p_go_vht = !!vht; 6786 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 6787 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 6788 if (ssid->mode == WPAS_MODE_P2P_GO) { 6789 role = P2P_INVITE_ROLE_GO; 6790 if (peer_addr == NULL) { 6791 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 6792 "address in invitation command"); 6793 return -1; 6794 } 6795 if (wpas_p2p_create_iface(wpa_s)) { 6796 if (wpas_p2p_add_group_interface(wpa_s, 6797 WPA_IF_P2P_GO) < 0) { 6798 wpa_printf(MSG_ERROR, "P2P: Failed to " 6799 "allocate a new interface for the " 6800 "group"); 6801 return -1; 6802 } 6803 bssid = wpa_s->pending_interface_addr; 6804 } else if (wpa_s->p2p_mgmt) 6805 bssid = wpa_s->parent->own_addr; 6806 else 6807 bssid = wpa_s->own_addr; 6808 } else { 6809 role = P2P_INVITE_ROLE_CLIENT; 6810 peer_addr = ssid->bssid; 6811 } 6812 wpa_s->pending_invite_ssid_id = ssid->id; 6813 6814 size = P2P_MAX_PREF_CHANNELS; 6815 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6816 role == P2P_INVITE_ROLE_GO, 6817 pref_freq_list, &size); 6818 if (res) 6819 return res; 6820 6821 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6822 return -1; 6823 6824 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 6825 6826 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 6827 no_pref_freq_given && pref_freq > 0 && 6828 wpa_s->num_multichan_concurrent > 1 && 6829 wpas_p2p_num_unused_channels(wpa_s) > 0) { 6830 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 6831 pref_freq); 6832 pref_freq = 0; 6833 } 6834 6835 /* 6836 * Stop any find/listen operations before invitation and possibly 6837 * connection establishment. 6838 */ 6839 wpas_p2p_stop_find_oper(wpa_s); 6840 6841 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6842 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 6843 1, pref_freq, -1); 6844 } 6845 6846 6847 /* Invite to join an active group */ 6848 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 6849 const u8 *peer_addr, const u8 *go_dev_addr) 6850 { 6851 struct wpa_global *global = wpa_s->global; 6852 enum p2p_invite_role role; 6853 u8 *bssid = NULL; 6854 struct wpa_ssid *ssid; 6855 int persistent; 6856 int freq = 0, force_freq = 0, pref_freq = 0; 6857 int res; 6858 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6859 6860 wpa_s->p2p_persistent_go_freq = 0; 6861 wpa_s->p2p_go_ht40 = 0; 6862 wpa_s->p2p_go_vht = 0; 6863 wpa_s->p2p_go_vht_center_freq2 = 0; 6864 wpa_s->p2p_go_max_oper_chwidth = 0; 6865 6866 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 6867 if (os_strcmp(wpa_s->ifname, ifname) == 0) 6868 break; 6869 } 6870 if (wpa_s == NULL) { 6871 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 6872 return -1; 6873 } 6874 6875 ssid = wpa_s->current_ssid; 6876 if (ssid == NULL) { 6877 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 6878 "invitation"); 6879 return -1; 6880 } 6881 6882 wpa_s->global->p2p_invite_group = wpa_s; 6883 persistent = ssid->p2p_persistent_group && 6884 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr, 6885 ssid->ssid, ssid->ssid_len); 6886 6887 if (ssid->mode == WPAS_MODE_P2P_GO) { 6888 role = P2P_INVITE_ROLE_ACTIVE_GO; 6889 bssid = wpa_s->own_addr; 6890 if (go_dev_addr == NULL) 6891 go_dev_addr = wpa_s->global->p2p_dev_addr; 6892 freq = ssid->frequency; 6893 } else { 6894 role = P2P_INVITE_ROLE_CLIENT; 6895 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 6896 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 6897 "invite to current group"); 6898 return -1; 6899 } 6900 bssid = wpa_s->bssid; 6901 if (go_dev_addr == NULL && 6902 !is_zero_ether_addr(wpa_s->go_dev_addr)) 6903 go_dev_addr = wpa_s->go_dev_addr; 6904 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6905 (int) wpa_s->assoc_freq; 6906 } 6907 wpa_s->p2pdev->pending_invite_ssid_id = -1; 6908 6909 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6910 return -1; 6911 6912 size = P2P_MAX_PREF_CHANNELS; 6913 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6914 role == P2P_INVITE_ROLE_ACTIVE_GO, 6915 pref_freq_list, &size); 6916 if (res) 6917 return res; 6918 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 6919 6920 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6921 ssid->ssid, ssid->ssid_len, force_freq, 6922 go_dev_addr, persistent, pref_freq, -1); 6923 } 6924 6925 6926 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 6927 { 6928 struct wpa_ssid *ssid = wpa_s->current_ssid; 6929 u8 go_dev_addr[ETH_ALEN]; 6930 int network_id = -1; 6931 int persistent; 6932 int freq; 6933 u8 ip[3 * 4]; 6934 char ip_addr[100]; 6935 6936 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 6937 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6938 wpa_s->p2pdev, NULL); 6939 } 6940 6941 if (!wpa_s->show_group_started || !ssid) 6942 return; 6943 6944 wpa_s->show_group_started = 0; 6945 if (!wpa_s->p2p_go_group_formation_completed && 6946 wpa_s->global->p2p_group_formation == wpa_s) { 6947 wpa_dbg(wpa_s, MSG_DEBUG, 6948 "P2P: Marking group formation completed on client on data connection"); 6949 wpa_s->p2p_go_group_formation_completed = 1; 6950 wpa_s->global->p2p_group_formation = NULL; 6951 wpa_s->p2p_in_provisioning = 0; 6952 wpa_s->p2p_in_invitation = 0; 6953 } 6954 6955 os_memset(go_dev_addr, 0, ETH_ALEN); 6956 if (ssid->bssid_set) 6957 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 6958 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6959 ssid->ssid_len); 6960 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 6961 6962 if (wpa_s->global->p2p_group_formation == wpa_s) 6963 wpa_s->global->p2p_group_formation = NULL; 6964 6965 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6966 (int) wpa_s->assoc_freq; 6967 6968 ip_addr[0] = '\0'; 6969 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 6970 int res; 6971 6972 res = os_snprintf(ip_addr, sizeof(ip_addr), 6973 " ip_addr=%u.%u.%u.%u " 6974 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 6975 ip[0], ip[1], ip[2], ip[3], 6976 ip[4], ip[5], ip[6], ip[7], 6977 ip[8], ip[9], ip[10], ip[11]); 6978 if (os_snprintf_error(sizeof(ip_addr), res)) 6979 ip_addr[0] = '\0'; 6980 } 6981 6982 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 6983 ssid->passphrase == NULL && ssid->psk_set ? 6984 ssid->psk : NULL, 6985 ssid->passphrase, go_dev_addr, persistent, 6986 ip_addr); 6987 6988 if (persistent) 6989 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev, 6990 ssid, go_dev_addr); 6991 if (network_id < 0) 6992 network_id = ssid->id; 6993 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 6994 } 6995 6996 6997 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 6998 u32 interval1, u32 duration2, u32 interval2) 6999 { 7000 int ret; 7001 7002 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7003 return -1; 7004 7005 if (wpa_s->wpa_state < WPA_ASSOCIATED || 7006 wpa_s->current_ssid == NULL || 7007 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 7008 return -1; 7009 7010 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 7011 wpa_s->own_addr, wpa_s->assoc_freq, 7012 duration1, interval1, duration2, interval2); 7013 if (ret == 0) 7014 wpa_s->waiting_presence_resp = 1; 7015 7016 return ret; 7017 } 7018 7019 7020 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 7021 unsigned int interval) 7022 { 7023 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7024 return -1; 7025 7026 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 7027 } 7028 7029 7030 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 7031 { 7032 if (wpa_s->current_ssid == NULL) { 7033 /* 7034 * current_ssid can be cleared when P2P client interface gets 7035 * disconnected, so assume this interface was used as P2P 7036 * client. 7037 */ 7038 return 1; 7039 } 7040 return wpa_s->current_ssid->p2p_group && 7041 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 7042 } 7043 7044 7045 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 7046 { 7047 struct wpa_supplicant *wpa_s = eloop_ctx; 7048 7049 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 7050 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 7051 "disabled"); 7052 return; 7053 } 7054 7055 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7056 "group"); 7057 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7058 } 7059 7060 7061 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7062 { 7063 int timeout; 7064 7065 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7066 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7067 7068 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7069 return; 7070 7071 timeout = wpa_s->conf->p2p_group_idle; 7072 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7073 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7074 timeout = P2P_MAX_CLIENT_IDLE; 7075 7076 if (timeout == 0) 7077 return; 7078 7079 if (timeout < 0) { 7080 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7081 timeout = 0; /* special client mode no-timeout */ 7082 else 7083 return; 7084 } 7085 7086 if (wpa_s->p2p_in_provisioning) { 7087 /* 7088 * Use the normal group formation timeout during the 7089 * provisioning phase to avoid terminating this process too 7090 * early due to group idle timeout. 7091 */ 7092 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7093 "during provisioning"); 7094 return; 7095 } 7096 7097 if (wpa_s->show_group_started) { 7098 /* 7099 * Use the normal group formation timeout between the end of 7100 * the provisioning phase and completion of 4-way handshake to 7101 * avoid terminating this process too early due to group idle 7102 * timeout. 7103 */ 7104 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7105 "while waiting for initial 4-way handshake to " 7106 "complete"); 7107 return; 7108 } 7109 7110 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7111 timeout); 7112 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7113 wpa_s, NULL); 7114 } 7115 7116 7117 /* Returns 1 if the interface was removed */ 7118 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7119 u16 reason_code, const u8 *ie, size_t ie_len, 7120 int locally_generated) 7121 { 7122 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7123 return 0; 7124 7125 if (!locally_generated) 7126 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7127 ie_len); 7128 7129 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7130 wpa_s->current_ssid && 7131 wpa_s->current_ssid->p2p_group && 7132 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7133 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7134 "session is ending"); 7135 if (wpas_p2p_group_delete(wpa_s, 7136 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7137 > 0) 7138 return 1; 7139 } 7140 7141 return 0; 7142 } 7143 7144 7145 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7146 u16 reason_code, const u8 *ie, size_t ie_len, 7147 int locally_generated) 7148 { 7149 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7150 return; 7151 7152 if (!locally_generated) 7153 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7154 ie_len); 7155 } 7156 7157 7158 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7159 { 7160 struct p2p_data *p2p = wpa_s->global->p2p; 7161 7162 if (p2p == NULL) 7163 return; 7164 7165 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7166 return; 7167 7168 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7169 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7170 7171 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7172 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7173 7174 if (wpa_s->wps && 7175 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7176 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7177 7178 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7179 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7180 7181 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7182 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7183 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7184 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7185 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7186 } 7187 7188 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7189 p2p_set_sec_dev_types(p2p, 7190 (void *) wpa_s->conf->sec_device_type, 7191 wpa_s->conf->num_sec_device_types); 7192 7193 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7194 int i; 7195 p2p_remove_wps_vendor_extensions(p2p); 7196 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7197 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7198 continue; 7199 p2p_add_wps_vendor_extension( 7200 p2p, wpa_s->conf->wps_vendor_ext[i]); 7201 } 7202 } 7203 7204 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7205 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7206 char country[3]; 7207 country[0] = wpa_s->conf->country[0]; 7208 country[1] = wpa_s->conf->country[1]; 7209 country[2] = 0x04; 7210 p2p_set_country(p2p, country); 7211 } 7212 7213 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7214 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7215 wpa_s->conf->p2p_ssid_postfix ? 7216 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7217 0); 7218 } 7219 7220 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7221 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7222 7223 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7224 u8 reg_class, channel; 7225 int ret; 7226 unsigned int r; 7227 u8 channel_forced; 7228 7229 if (wpa_s->conf->p2p_listen_reg_class && 7230 wpa_s->conf->p2p_listen_channel) { 7231 reg_class = wpa_s->conf->p2p_listen_reg_class; 7232 channel = wpa_s->conf->p2p_listen_channel; 7233 channel_forced = 1; 7234 } else { 7235 reg_class = 81; 7236 /* 7237 * Pick one of the social channels randomly as the 7238 * listen channel. 7239 */ 7240 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7241 channel = 1; 7242 else 7243 channel = 1 + (r % 3) * 5; 7244 channel_forced = 0; 7245 } 7246 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7247 channel_forced); 7248 if (ret) 7249 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7250 "failed: %d", ret); 7251 } 7252 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7253 u8 op_reg_class, op_channel, cfg_op_channel; 7254 int ret = 0; 7255 unsigned int r; 7256 if (wpa_s->conf->p2p_oper_reg_class && 7257 wpa_s->conf->p2p_oper_channel) { 7258 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7259 op_channel = wpa_s->conf->p2p_oper_channel; 7260 cfg_op_channel = 1; 7261 } else { 7262 op_reg_class = 81; 7263 /* 7264 * Use random operation channel from (1, 6, 11) 7265 *if no other preference is indicated. 7266 */ 7267 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7268 op_channel = 1; 7269 else 7270 op_channel = 1 + (r % 3) * 5; 7271 cfg_op_channel = 0; 7272 } 7273 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7274 cfg_op_channel); 7275 if (ret) 7276 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7277 "failed: %d", ret); 7278 } 7279 7280 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7281 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7282 wpa_s->conf->p2p_pref_chan) < 0) { 7283 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7284 "update failed"); 7285 } 7286 7287 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7288 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7289 "update failed"); 7290 } 7291 } 7292 7293 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7294 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7295 } 7296 7297 7298 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7299 int duration) 7300 { 7301 if (!wpa_s->ap_iface) 7302 return -1; 7303 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7304 duration); 7305 } 7306 7307 7308 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7309 { 7310 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7311 return -1; 7312 7313 wpa_s->global->cross_connection = enabled; 7314 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7315 7316 if (!enabled) { 7317 struct wpa_supplicant *iface; 7318 7319 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7320 { 7321 if (iface->cross_connect_enabled == 0) 7322 continue; 7323 7324 iface->cross_connect_enabled = 0; 7325 iface->cross_connect_in_use = 0; 7326 wpa_msg_global(iface->p2pdev, MSG_INFO, 7327 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7328 iface->ifname, 7329 iface->cross_connect_uplink); 7330 } 7331 } 7332 7333 return 0; 7334 } 7335 7336 7337 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7338 { 7339 struct wpa_supplicant *iface; 7340 7341 if (!uplink->global->cross_connection) 7342 return; 7343 7344 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7345 if (!iface->cross_connect_enabled) 7346 continue; 7347 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7348 0) 7349 continue; 7350 if (iface->ap_iface == NULL) 7351 continue; 7352 if (iface->cross_connect_in_use) 7353 continue; 7354 7355 iface->cross_connect_in_use = 1; 7356 wpa_msg_global(iface->p2pdev, MSG_INFO, 7357 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7358 iface->ifname, iface->cross_connect_uplink); 7359 } 7360 } 7361 7362 7363 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7364 { 7365 struct wpa_supplicant *iface; 7366 7367 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7368 if (!iface->cross_connect_enabled) 7369 continue; 7370 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7371 0) 7372 continue; 7373 if (!iface->cross_connect_in_use) 7374 continue; 7375 7376 wpa_msg_global(iface->p2pdev, MSG_INFO, 7377 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7378 iface->ifname, iface->cross_connect_uplink); 7379 iface->cross_connect_in_use = 0; 7380 } 7381 } 7382 7383 7384 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7385 { 7386 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7387 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7388 wpa_s->cross_connect_disallowed) 7389 wpas_p2p_disable_cross_connect(wpa_s); 7390 else 7391 wpas_p2p_enable_cross_connect(wpa_s); 7392 if (!wpa_s->ap_iface && 7393 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7394 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7395 } 7396 7397 7398 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7399 { 7400 wpas_p2p_disable_cross_connect(wpa_s); 7401 if (!wpa_s->ap_iface && 7402 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7403 wpa_s, NULL)) 7404 wpas_p2p_set_group_idle_timeout(wpa_s); 7405 } 7406 7407 7408 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7409 { 7410 struct wpa_supplicant *iface; 7411 7412 if (!wpa_s->global->cross_connection) 7413 return; 7414 7415 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7416 if (iface == wpa_s) 7417 continue; 7418 if (iface->drv_flags & 7419 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7420 continue; 7421 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7422 iface != wpa_s->parent) 7423 continue; 7424 7425 wpa_s->cross_connect_enabled = 1; 7426 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7427 sizeof(wpa_s->cross_connect_uplink)); 7428 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7429 "%s to %s whenever uplink is available", 7430 wpa_s->ifname, wpa_s->cross_connect_uplink); 7431 7432 if (iface->ap_iface || iface->current_ssid == NULL || 7433 iface->current_ssid->mode != WPAS_MODE_INFRA || 7434 iface->cross_connect_disallowed || 7435 iface->wpa_state != WPA_COMPLETED) 7436 break; 7437 7438 wpa_s->cross_connect_in_use = 1; 7439 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 7440 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7441 wpa_s->ifname, wpa_s->cross_connect_uplink); 7442 break; 7443 } 7444 } 7445 7446 7447 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7448 { 7449 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7450 !wpa_s->p2p_in_provisioning) 7451 return 0; /* not P2P client operation */ 7452 7453 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7454 "session overlap"); 7455 if (wpa_s != wpa_s->p2pdev) 7456 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP); 7457 wpas_p2p_group_formation_failed(wpa_s, 0); 7458 return 1; 7459 } 7460 7461 7462 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7463 { 7464 struct wpa_supplicant *wpa_s = eloop_ctx; 7465 wpas_p2p_notif_pbc_overlap(wpa_s); 7466 } 7467 7468 7469 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7470 enum wpas_p2p_channel_update_trig trig) 7471 { 7472 struct p2p_channels chan, cli_chan; 7473 struct wpa_used_freq_data *freqs = NULL; 7474 unsigned int num = wpa_s->num_multichan_concurrent; 7475 7476 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7477 return; 7478 7479 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7480 if (!freqs) 7481 return; 7482 7483 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7484 7485 os_memset(&chan, 0, sizeof(chan)); 7486 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7487 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7488 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7489 "channel list"); 7490 return; 7491 } 7492 7493 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7494 7495 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7496 7497 /* 7498 * The used frequencies map changed, so it is possible that a GO is 7499 * using a channel that is no longer valid for P2P use. It is also 7500 * possible that due to policy consideration, it would be preferable to 7501 * move it to a frequency already used by other station interfaces. 7502 */ 7503 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7504 7505 os_free(freqs); 7506 } 7507 7508 7509 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7510 struct wpa_scan_results *scan_res) 7511 { 7512 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7513 } 7514 7515 7516 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7517 { 7518 struct wpa_global *global = wpa_s->global; 7519 int found = 0; 7520 const u8 *peer; 7521 7522 if (global->p2p == NULL) 7523 return -1; 7524 7525 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7526 7527 if (wpa_s->pending_interface_name[0] && 7528 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7529 found = 1; 7530 7531 peer = p2p_get_go_neg_peer(global->p2p); 7532 if (peer) { 7533 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7534 MACSTR, MAC2STR(peer)); 7535 p2p_unauthorize(global->p2p, peer); 7536 found = 1; 7537 } 7538 7539 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7540 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7541 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7542 found = 1; 7543 } 7544 7545 if (wpa_s->pending_pd_before_join) { 7546 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7547 wpa_s->pending_pd_before_join = 0; 7548 found = 1; 7549 } 7550 7551 wpas_p2p_stop_find(wpa_s); 7552 7553 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7554 if (wpa_s == global->p2p_group_formation && 7555 (wpa_s->p2p_in_provisioning || 7556 wpa_s->parent->pending_interface_type == 7557 WPA_IF_P2P_CLIENT)) { 7558 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7559 "formation found - cancelling", 7560 wpa_s->ifname); 7561 found = 1; 7562 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7563 wpa_s->p2pdev, NULL); 7564 if (wpa_s->p2p_in_provisioning) { 7565 wpas_group_formation_completed(wpa_s, 0, 0); 7566 break; 7567 } 7568 wpas_p2p_group_delete(wpa_s, 7569 P2P_GROUP_REMOVAL_REQUESTED); 7570 break; 7571 } else if (wpa_s->p2p_in_invitation) { 7572 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7573 wpa_s->ifname); 7574 found = 1; 7575 wpas_p2p_group_formation_failed(wpa_s, 0); 7576 break; 7577 } 7578 } 7579 7580 if (!found) { 7581 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7582 return -1; 7583 } 7584 7585 return 0; 7586 } 7587 7588 7589 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7590 { 7591 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7592 return; 7593 7594 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7595 "being available anymore"); 7596 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7597 } 7598 7599 7600 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7601 int freq_24, int freq_5, int freq_overall) 7602 { 7603 struct p2p_data *p2p = wpa_s->global->p2p; 7604 if (p2p == NULL) 7605 return; 7606 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7607 } 7608 7609 7610 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7611 { 7612 u8 peer[ETH_ALEN]; 7613 struct p2p_data *p2p = wpa_s->global->p2p; 7614 7615 if (p2p == NULL) 7616 return -1; 7617 7618 if (hwaddr_aton(addr, peer)) 7619 return -1; 7620 7621 return p2p_unauthorize(p2p, peer); 7622 } 7623 7624 7625 /** 7626 * wpas_p2p_disconnect - Disconnect from a P2P Group 7627 * @wpa_s: Pointer to wpa_supplicant data 7628 * Returns: 0 on success, -1 on failure 7629 * 7630 * This can be used to disconnect from a group in which the local end is a P2P 7631 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7632 * virtual network interface was created for this group, that interface will be 7633 * removed. Otherwise, only the configured P2P group network will be removed 7634 * from the interface. 7635 */ 7636 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7637 { 7638 7639 if (wpa_s == NULL) 7640 return -1; 7641 7642 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7643 -1 : 0; 7644 } 7645 7646 7647 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7648 { 7649 int ret; 7650 7651 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7652 return 0; 7653 7654 ret = p2p_in_progress(wpa_s->global->p2p); 7655 if (ret == 0) { 7656 /* 7657 * Check whether there is an ongoing WPS provisioning step (or 7658 * other parts of group formation) on another interface since 7659 * p2p_in_progress() does not report this to avoid issues for 7660 * scans during such provisioning step. 7661 */ 7662 if (wpa_s->global->p2p_group_formation && 7663 wpa_s->global->p2p_group_formation != wpa_s) { 7664 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7665 "in group formation", 7666 wpa_s->global->p2p_group_formation->ifname); 7667 ret = 1; 7668 } 7669 } 7670 7671 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7672 struct os_reltime now; 7673 os_get_reltime(&now); 7674 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7675 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7676 /* Wait for the first client has expired */ 7677 wpa_s->global->p2p_go_wait_client.sec = 0; 7678 } else { 7679 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7680 ret = 1; 7681 } 7682 } 7683 7684 return ret; 7685 } 7686 7687 7688 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7689 struct wpa_ssid *ssid) 7690 { 7691 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7692 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7693 wpa_s->p2pdev, NULL) > 0) { 7694 /** 7695 * Remove the network by scheduling the group formation 7696 * timeout to happen immediately. The teardown code 7697 * needs to be scheduled to run asynch later so that we 7698 * don't delete data from under ourselves unexpectedly. 7699 * Calling wpas_p2p_group_formation_timeout directly 7700 * causes a series of crashes in WPS failure scenarios. 7701 */ 7702 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7703 "P2P group network getting removed"); 7704 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7705 wpa_s->p2pdev, NULL); 7706 } 7707 } 7708 7709 7710 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 7711 const u8 *addr, const u8 *ssid, 7712 size_t ssid_len) 7713 { 7714 struct wpa_ssid *s; 7715 size_t i; 7716 7717 for (s = wpa_s->conf->ssid; s; s = s->next) { 7718 if (s->disabled != 2) 7719 continue; 7720 if (ssid && 7721 (ssid_len != s->ssid_len || 7722 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 7723 continue; 7724 if (addr == NULL) { 7725 if (s->mode == WPAS_MODE_P2P_GO) 7726 return s; 7727 continue; 7728 } 7729 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 7730 return s; /* peer is GO in the persistent group */ 7731 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 7732 continue; 7733 for (i = 0; i < s->num_p2p_clients; i++) { 7734 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 7735 addr, ETH_ALEN) == 0) 7736 return s; /* peer is P2P client in persistent 7737 * group */ 7738 } 7739 } 7740 7741 return NULL; 7742 } 7743 7744 7745 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 7746 const u8 *addr) 7747 { 7748 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7749 wpa_s->p2pdev, NULL) > 0) { 7750 /* 7751 * This can happen if WPS provisioning step is not terminated 7752 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 7753 * peer was able to connect, there is no need to time out group 7754 * formation after this, though. In addition, this is used with 7755 * the initial connection wait on the GO as a separate formation 7756 * timeout and as such, expected to be hit after the initial WPS 7757 * provisioning step. 7758 */ 7759 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 7760 7761 if (!wpa_s->p2p_go_group_formation_completed && 7762 !wpa_s->group_formation_reported) { 7763 /* 7764 * GO has not yet notified group formation success since 7765 * the WPS step was not completed cleanly. Do that 7766 * notification now since the P2P Client was able to 7767 * connect and as such, must have received the 7768 * credential from the WPS step. 7769 */ 7770 if (wpa_s->global->p2p) 7771 p2p_wps_success_cb(wpa_s->global->p2p, addr); 7772 wpas_group_formation_completed(wpa_s, 1, 0); 7773 } 7774 } 7775 if (!wpa_s->p2p_go_group_formation_completed) { 7776 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 7777 wpa_s->p2p_go_group_formation_completed = 1; 7778 wpa_s->global->p2p_group_formation = NULL; 7779 wpa_s->p2p_in_provisioning = 0; 7780 wpa_s->p2p_in_invitation = 0; 7781 } 7782 wpa_s->global->p2p_go_wait_client.sec = 0; 7783 if (addr == NULL) 7784 return; 7785 wpas_p2p_add_persistent_group_client(wpa_s, addr); 7786 } 7787 7788 7789 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 7790 int group_added) 7791 { 7792 struct wpa_supplicant *group = wpa_s; 7793 int ret = 0; 7794 7795 if (wpa_s->global->p2p_group_formation) 7796 group = wpa_s->global->p2p_group_formation; 7797 wpa_s = wpa_s->global->p2p_init_wpa_s; 7798 offchannel_send_action_done(wpa_s); 7799 if (group_added) 7800 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 7801 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 7802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 7803 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 7804 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 7805 wpa_s->p2p_go_vht_center_freq2, 7806 wpa_s->p2p_persistent_id, 7807 wpa_s->p2p_pd_before_go_neg, 7808 wpa_s->p2p_go_ht40, 7809 wpa_s->p2p_go_vht, 7810 wpa_s->p2p_go_max_oper_chwidth, NULL, 0); 7811 return ret; 7812 } 7813 7814 7815 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 7816 { 7817 int res; 7818 7819 if (!wpa_s->p2p_fallback_to_go_neg || 7820 wpa_s->p2p_in_provisioning <= 5) 7821 return 0; 7822 7823 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 7824 return 0; /* peer operating as a GO */ 7825 7826 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 7827 "fallback to GO Negotiation"); 7828 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 7829 "reason=GO-not-found"); 7830 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 7831 7832 return res == 1 ? 2 : 1; 7833 } 7834 7835 7836 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 7837 { 7838 struct wpa_supplicant *ifs; 7839 7840 if (wpa_s->wpa_state > WPA_SCANNING) { 7841 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 7842 "concurrent operation", 7843 wpa_s->conf->p2p_search_delay); 7844 return wpa_s->conf->p2p_search_delay; 7845 } 7846 7847 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 7848 radio_list) { 7849 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 7850 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 7851 "delay due to concurrent operation on " 7852 "interface %s", 7853 wpa_s->conf->p2p_search_delay, 7854 ifs->ifname); 7855 return wpa_s->conf->p2p_search_delay; 7856 } 7857 } 7858 7859 return 0; 7860 } 7861 7862 7863 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 7864 struct wpa_ssid *s, const u8 *addr, 7865 int iface_addr) 7866 { 7867 struct psk_list_entry *psk, *tmp; 7868 int changed = 0; 7869 7870 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 7871 list) { 7872 if ((iface_addr && !psk->p2p && 7873 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 7874 (!iface_addr && psk->p2p && 7875 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 7876 wpa_dbg(wpa_s, MSG_DEBUG, 7877 "P2P: Remove persistent group PSK list entry for " 7878 MACSTR " p2p=%u", 7879 MAC2STR(psk->addr), psk->p2p); 7880 dl_list_del(&psk->list); 7881 os_free(psk); 7882 changed++; 7883 } 7884 } 7885 7886 return changed; 7887 } 7888 7889 7890 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 7891 const u8 *p2p_dev_addr, 7892 const u8 *psk, size_t psk_len) 7893 { 7894 struct wpa_ssid *ssid = wpa_s->current_ssid; 7895 struct wpa_ssid *persistent; 7896 struct psk_list_entry *p, *last; 7897 7898 if (psk_len != sizeof(p->psk)) 7899 return; 7900 7901 if (p2p_dev_addr) { 7902 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 7903 " p2p_dev_addr=" MACSTR, 7904 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 7905 if (is_zero_ether_addr(p2p_dev_addr)) 7906 p2p_dev_addr = NULL; 7907 } else { 7908 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 7909 MAC2STR(mac_addr)); 7910 } 7911 7912 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 7913 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 7914 /* To be added to persistent group once created */ 7915 if (wpa_s->global->add_psk == NULL) { 7916 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 7917 if (wpa_s->global->add_psk == NULL) 7918 return; 7919 } 7920 p = wpa_s->global->add_psk; 7921 if (p2p_dev_addr) { 7922 p->p2p = 1; 7923 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7924 } else { 7925 p->p2p = 0; 7926 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7927 } 7928 os_memcpy(p->psk, psk, psk_len); 7929 return; 7930 } 7931 7932 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 7933 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 7934 return; 7935 } 7936 7937 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 7938 ssid->ssid_len); 7939 if (!persistent) { 7940 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 7941 return; 7942 } 7943 7944 p = os_zalloc(sizeof(*p)); 7945 if (p == NULL) 7946 return; 7947 if (p2p_dev_addr) { 7948 p->p2p = 1; 7949 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7950 } else { 7951 p->p2p = 0; 7952 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7953 } 7954 os_memcpy(p->psk, psk, psk_len); 7955 7956 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 7957 (last = dl_list_last(&persistent->psk_list, 7958 struct psk_list_entry, list))) { 7959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 7960 MACSTR " (p2p=%u) to make room for a new one", 7961 MAC2STR(last->addr), last->p2p); 7962 dl_list_del(&last->list); 7963 os_free(last); 7964 } 7965 7966 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent, 7967 p2p_dev_addr ? p2p_dev_addr : mac_addr, 7968 p2p_dev_addr == NULL); 7969 if (p2p_dev_addr) { 7970 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 7971 MACSTR, MAC2STR(p2p_dev_addr)); 7972 } else { 7973 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 7974 MAC2STR(mac_addr)); 7975 } 7976 dl_list_add(&persistent->psk_list, &p->list); 7977 7978 if (wpa_s->p2pdev->conf->update_config && 7979 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 7980 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 7981 } 7982 7983 7984 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 7985 struct wpa_ssid *s, const u8 *addr, 7986 int iface_addr) 7987 { 7988 int res; 7989 7990 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 7991 if (res > 0 && wpa_s->conf->update_config && 7992 wpa_config_write(wpa_s->confname, wpa_s->conf)) 7993 wpa_dbg(wpa_s, MSG_DEBUG, 7994 "P2P: Failed to update configuration"); 7995 } 7996 7997 7998 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 7999 const u8 *peer, int iface_addr) 8000 { 8001 struct hostapd_data *hapd; 8002 struct hostapd_wpa_psk *psk, *prev, *rem; 8003 struct sta_info *sta; 8004 8005 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 8006 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 8007 return; 8008 8009 /* Remove per-station PSK entry */ 8010 hapd = wpa_s->ap_iface->bss[0]; 8011 prev = NULL; 8012 psk = hapd->conf->ssid.wpa_psk; 8013 while (psk) { 8014 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 8015 (!iface_addr && 8016 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 8017 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 8018 MACSTR " iface_addr=%d", 8019 MAC2STR(peer), iface_addr); 8020 if (prev) 8021 prev->next = psk->next; 8022 else 8023 hapd->conf->ssid.wpa_psk = psk->next; 8024 rem = psk; 8025 psk = psk->next; 8026 os_free(rem); 8027 } else { 8028 prev = psk; 8029 psk = psk->next; 8030 } 8031 } 8032 8033 /* Disconnect from group */ 8034 if (iface_addr) 8035 sta = ap_get_sta(hapd, peer); 8036 else 8037 sta = ap_get_sta_p2p(hapd, peer); 8038 if (sta) { 8039 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 8040 " (iface_addr=%d) from group", 8041 MAC2STR(peer), iface_addr); 8042 hostapd_drv_sta_deauth(hapd, sta->addr, 8043 WLAN_REASON_DEAUTH_LEAVING); 8044 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 8045 } 8046 } 8047 8048 8049 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 8050 int iface_addr) 8051 { 8052 struct wpa_ssid *s; 8053 struct wpa_supplicant *w; 8054 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8055 8056 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8057 8058 /* Remove from any persistent group */ 8059 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8060 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8061 continue; 8062 if (!iface_addr) 8063 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8064 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8065 } 8066 8067 /* Remove from any operating group */ 8068 for (w = wpa_s->global->ifaces; w; w = w->next) 8069 wpas_p2p_remove_client_go(w, peer, iface_addr); 8070 } 8071 8072 8073 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8074 { 8075 struct wpa_supplicant *wpa_s = eloop_ctx; 8076 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8077 } 8078 8079 8080 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8081 { 8082 struct wpa_supplicant *wpa_s = eloop_ctx; 8083 8084 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8085 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8086 } 8087 8088 8089 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8090 struct wpa_ssid *ssid) 8091 { 8092 struct wpa_supplicant *iface; 8093 8094 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8095 if (!iface->current_ssid || 8096 iface->current_ssid->frequency == freq || 8097 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8098 !iface->current_ssid->p2p_group)) 8099 continue; 8100 8101 /* Remove the connection with least priority */ 8102 if (!wpas_is_p2p_prioritized(iface)) { 8103 /* STA connection has priority over existing 8104 * P2P connection, so remove the interface. */ 8105 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8106 eloop_register_timeout(0, 0, 8107 wpas_p2p_group_freq_conflict, 8108 iface, NULL); 8109 /* If connection in progress is P2P connection, do not 8110 * proceed for the connection. */ 8111 if (wpa_s == iface) 8112 return -1; 8113 else 8114 return 0; 8115 } else { 8116 /* P2P connection has priority, disable the STA network 8117 */ 8118 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8119 ssid); 8120 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8121 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8122 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8123 ETH_ALEN); 8124 /* If P2P connection is in progress, continue 8125 * connecting...*/ 8126 if (wpa_s == iface) 8127 return 0; 8128 else 8129 return -1; 8130 } 8131 } 8132 8133 return 0; 8134 } 8135 8136 8137 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8138 { 8139 struct wpa_ssid *ssid = wpa_s->current_ssid; 8140 8141 if (ssid == NULL || !ssid->p2p_group) 8142 return 0; 8143 8144 if (wpa_s->p2p_last_4way_hs_fail && 8145 wpa_s->p2p_last_4way_hs_fail == ssid) { 8146 u8 go_dev_addr[ETH_ALEN]; 8147 struct wpa_ssid *persistent; 8148 8149 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8150 ssid->ssid, 8151 ssid->ssid_len) <= 0) { 8152 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8153 goto disconnect; 8154 } 8155 8156 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8157 MACSTR, MAC2STR(go_dev_addr)); 8158 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr, 8159 ssid->ssid, 8160 ssid->ssid_len); 8161 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8162 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8163 goto disconnect; 8164 } 8165 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 8166 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8167 persistent->id); 8168 disconnect: 8169 wpa_s->p2p_last_4way_hs_fail = NULL; 8170 /* 8171 * Remove the group from a timeout to avoid issues with caller 8172 * continuing to use the interface if this is on a P2P group 8173 * interface. 8174 */ 8175 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8176 wpa_s, NULL); 8177 return 1; 8178 } 8179 8180 wpa_s->p2p_last_4way_hs_fail = ssid; 8181 return 0; 8182 } 8183 8184 8185 #ifdef CONFIG_WPS_NFC 8186 8187 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8188 struct wpabuf *p2p) 8189 { 8190 struct wpabuf *ret; 8191 size_t wsc_len; 8192 8193 if (p2p == NULL) { 8194 wpabuf_free(wsc); 8195 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8196 return NULL; 8197 } 8198 8199 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8200 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8201 if (ret == NULL) { 8202 wpabuf_free(wsc); 8203 wpabuf_free(p2p); 8204 return NULL; 8205 } 8206 8207 wpabuf_put_be16(ret, wsc_len); 8208 if (wsc) 8209 wpabuf_put_buf(ret, wsc); 8210 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8211 wpabuf_put_buf(ret, p2p); 8212 8213 wpabuf_free(wsc); 8214 wpabuf_free(p2p); 8215 wpa_hexdump_buf(MSG_DEBUG, 8216 "P2P: Generated NFC connection handover message", ret); 8217 8218 if (ndef && ret) { 8219 struct wpabuf *tmp; 8220 tmp = ndef_build_p2p(ret); 8221 wpabuf_free(ret); 8222 if (tmp == NULL) { 8223 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8224 return NULL; 8225 } 8226 ret = tmp; 8227 } 8228 8229 return ret; 8230 } 8231 8232 8233 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8234 struct wpa_ssid **ssid, u8 *go_dev_addr) 8235 { 8236 struct wpa_supplicant *iface; 8237 8238 if (go_dev_addr) 8239 os_memset(go_dev_addr, 0, ETH_ALEN); 8240 if (ssid) 8241 *ssid = NULL; 8242 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8243 if (iface->wpa_state < WPA_ASSOCIATING || 8244 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8245 !iface->current_ssid->p2p_group || 8246 iface->current_ssid->mode != WPAS_MODE_INFRA) 8247 continue; 8248 if (ssid) 8249 *ssid = iface->current_ssid; 8250 if (go_dev_addr) 8251 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8252 return iface->assoc_freq; 8253 } 8254 return 0; 8255 } 8256 8257 8258 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8259 int ndef) 8260 { 8261 struct wpabuf *wsc, *p2p; 8262 struct wpa_ssid *ssid; 8263 u8 go_dev_addr[ETH_ALEN]; 8264 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8265 8266 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8267 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8268 return NULL; 8269 } 8270 8271 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8272 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8273 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8274 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8275 return NULL; 8276 } 8277 8278 if (cli_freq == 0) { 8279 wsc = wps_build_nfc_handover_req_p2p( 8280 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8281 } else 8282 wsc = NULL; 8283 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8284 go_dev_addr, ssid ? ssid->ssid : NULL, 8285 ssid ? ssid->ssid_len : 0); 8286 8287 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8288 } 8289 8290 8291 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8292 int ndef, int tag) 8293 { 8294 struct wpabuf *wsc, *p2p; 8295 struct wpa_ssid *ssid; 8296 u8 go_dev_addr[ETH_ALEN]; 8297 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8298 8299 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8300 return NULL; 8301 8302 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8303 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8304 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8305 return NULL; 8306 8307 if (cli_freq == 0) { 8308 wsc = wps_build_nfc_handover_sel_p2p( 8309 wpa_s->parent->wps, 8310 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8311 DEV_PW_NFC_CONNECTION_HANDOVER, 8312 wpa_s->conf->wps_nfc_dh_pubkey, 8313 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8314 } else 8315 wsc = NULL; 8316 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8317 go_dev_addr, ssid ? ssid->ssid : NULL, 8318 ssid ? ssid->ssid_len : 0); 8319 8320 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8321 } 8322 8323 8324 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8325 struct p2p_nfc_params *params) 8326 { 8327 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8328 "connection handover (freq=%d)", 8329 params->go_freq); 8330 8331 if (params->go_freq && params->go_ssid_len) { 8332 wpa_s->p2p_wps_method = WPS_NFC; 8333 wpa_s->pending_join_wps_method = WPS_NFC; 8334 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8335 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8336 ETH_ALEN); 8337 return wpas_p2p_join_start(wpa_s, params->go_freq, 8338 params->go_ssid, 8339 params->go_ssid_len); 8340 } 8341 8342 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8343 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8344 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8345 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8346 params->go_ssid_len ? params->go_ssid : NULL, 8347 params->go_ssid_len); 8348 } 8349 8350 8351 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8352 struct p2p_nfc_params *params, int tag) 8353 { 8354 int res, persistent; 8355 struct wpa_ssid *ssid; 8356 8357 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8358 "connection handover"); 8359 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8360 ssid = wpa_s->current_ssid; 8361 if (ssid == NULL) 8362 continue; 8363 if (ssid->mode != WPAS_MODE_P2P_GO) 8364 continue; 8365 if (wpa_s->ap_iface == NULL) 8366 continue; 8367 break; 8368 } 8369 if (wpa_s == NULL) { 8370 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8371 return -1; 8372 } 8373 8374 if (wpa_s->parent->p2p_oob_dev_pw_id != 8375 DEV_PW_NFC_CONNECTION_HANDOVER && 8376 !wpa_s->parent->p2p_oob_dev_pw) { 8377 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8378 return -1; 8379 } 8380 res = wpas_ap_wps_add_nfc_pw( 8381 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 8382 wpa_s->parent->p2p_oob_dev_pw, 8383 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 8384 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 8385 if (res) 8386 return res; 8387 8388 if (!tag) { 8389 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8390 return 0; 8391 } 8392 8393 if (!params->peer || 8394 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8395 return 0; 8396 8397 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8398 " to join", MAC2STR(params->peer->p2p_device_addr)); 8399 8400 wpa_s->global->p2p_invite_group = wpa_s; 8401 persistent = ssid->p2p_persistent_group && 8402 wpas_p2p_get_persistent(wpa_s->parent, 8403 params->peer->p2p_device_addr, 8404 ssid->ssid, ssid->ssid_len); 8405 wpa_s->parent->pending_invite_ssid_id = -1; 8406 8407 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8408 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8409 ssid->ssid, ssid->ssid_len, ssid->frequency, 8410 wpa_s->global->p2p_dev_addr, persistent, 0, 8411 wpa_s->parent->p2p_oob_dev_pw_id); 8412 } 8413 8414 8415 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8416 struct p2p_nfc_params *params, 8417 int forced_freq) 8418 { 8419 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8420 "connection handover"); 8421 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8422 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8423 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8424 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8425 NULL, 0); 8426 } 8427 8428 8429 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8430 struct p2p_nfc_params *params, 8431 int forced_freq) 8432 { 8433 int res; 8434 8435 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8436 "connection handover"); 8437 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8438 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8439 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8440 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8441 NULL, 0); 8442 if (res) 8443 return res; 8444 8445 res = wpas_p2p_listen(wpa_s, 60); 8446 if (res) { 8447 p2p_unauthorize(wpa_s->global->p2p, 8448 params->peer->p2p_device_addr); 8449 } 8450 8451 return res; 8452 } 8453 8454 8455 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8456 const struct wpabuf *data, 8457 int sel, int tag, int forced_freq) 8458 { 8459 const u8 *pos, *end; 8460 u16 len, id; 8461 struct p2p_nfc_params params; 8462 int res; 8463 8464 os_memset(¶ms, 0, sizeof(params)); 8465 params.sel = sel; 8466 8467 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8468 8469 pos = wpabuf_head(data); 8470 end = pos + wpabuf_len(data); 8471 8472 if (end - pos < 2) { 8473 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8474 "attributes"); 8475 return -1; 8476 } 8477 len = WPA_GET_BE16(pos); 8478 pos += 2; 8479 if (len > end - pos) { 8480 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8481 "attributes"); 8482 return -1; 8483 } 8484 params.wsc_attr = pos; 8485 params.wsc_len = len; 8486 pos += len; 8487 8488 if (end - pos < 2) { 8489 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8490 "attributes"); 8491 return -1; 8492 } 8493 len = WPA_GET_BE16(pos); 8494 pos += 2; 8495 if (len > end - pos) { 8496 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8497 "attributes"); 8498 return -1; 8499 } 8500 params.p2p_attr = pos; 8501 params.p2p_len = len; 8502 pos += len; 8503 8504 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8505 params.wsc_attr, params.wsc_len); 8506 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8507 params.p2p_attr, params.p2p_len); 8508 if (pos < end) { 8509 wpa_hexdump(MSG_DEBUG, 8510 "P2P: Ignored extra data after P2P attributes", 8511 pos, end - pos); 8512 } 8513 8514 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8515 if (res) 8516 return res; 8517 8518 if (params.next_step == NO_ACTION) 8519 return 0; 8520 8521 if (params.next_step == BOTH_GO) { 8522 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8523 MAC2STR(params.peer->p2p_device_addr)); 8524 return 0; 8525 } 8526 8527 if (params.next_step == PEER_CLIENT) { 8528 if (!is_zero_ether_addr(params.go_dev_addr)) { 8529 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8530 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8531 " ssid=\"%s\"", 8532 MAC2STR(params.peer->p2p_device_addr), 8533 params.go_freq, 8534 MAC2STR(params.go_dev_addr), 8535 wpa_ssid_txt(params.go_ssid, 8536 params.go_ssid_len)); 8537 } else { 8538 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8539 "peer=" MACSTR " freq=%d", 8540 MAC2STR(params.peer->p2p_device_addr), 8541 params.go_freq); 8542 } 8543 return 0; 8544 } 8545 8546 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8547 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8548 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8549 return 0; 8550 } 8551 8552 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8553 wpa_s->p2p_oob_dev_pw = NULL; 8554 8555 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8556 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8557 "received"); 8558 return -1; 8559 } 8560 8561 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8562 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8563 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8564 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8565 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8566 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8567 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8568 8569 if (tag) { 8570 if (id < 0x10) { 8571 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8572 "peer OOB Device Password Id %u", id); 8573 return -1; 8574 } 8575 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8576 "Device Password Id %u", id); 8577 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8578 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8579 params.oob_dev_pw_len - 8580 WPS_OOB_PUBKEY_HASH_LEN - 2); 8581 wpa_s->p2p_oob_dev_pw_id = id; 8582 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8583 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8584 params.oob_dev_pw_len - 8585 WPS_OOB_PUBKEY_HASH_LEN - 2); 8586 if (wpa_s->p2p_oob_dev_pw == NULL) 8587 return -1; 8588 8589 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8590 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8591 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8592 return -1; 8593 } else { 8594 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8595 "without Device Password"); 8596 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8597 } 8598 8599 switch (params.next_step) { 8600 case NO_ACTION: 8601 case BOTH_GO: 8602 case PEER_CLIENT: 8603 /* already covered above */ 8604 return 0; 8605 case JOIN_GROUP: 8606 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8607 case AUTH_JOIN: 8608 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8609 case INIT_GO_NEG: 8610 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8611 case RESP_GO_NEG: 8612 /* TODO: use own OOB Dev Pw */ 8613 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8614 } 8615 8616 return -1; 8617 } 8618 8619 8620 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8621 const struct wpabuf *data, int forced_freq) 8622 { 8623 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8624 return -1; 8625 8626 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8627 } 8628 8629 8630 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8631 const struct wpabuf *req, 8632 const struct wpabuf *sel, int forced_freq) 8633 { 8634 struct wpabuf *tmp; 8635 int ret; 8636 8637 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8638 return -1; 8639 8640 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8641 8642 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8643 wpabuf_head(req), wpabuf_len(req)); 8644 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8645 wpabuf_head(sel), wpabuf_len(sel)); 8646 if (forced_freq) 8647 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8648 tmp = ndef_parse_p2p(init ? sel : req); 8649 if (tmp == NULL) { 8650 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8651 return -1; 8652 } 8653 8654 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8655 forced_freq); 8656 wpabuf_free(tmp); 8657 8658 return ret; 8659 } 8660 8661 8662 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8663 { 8664 const u8 *if_addr; 8665 int go_intent = wpa_s->conf->p2p_go_intent; 8666 struct wpa_supplicant *iface; 8667 8668 if (wpa_s->global->p2p == NULL) 8669 return -1; 8670 8671 if (!enabled) { 8672 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8673 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8674 { 8675 if (!iface->ap_iface) 8676 continue; 8677 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8678 } 8679 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8680 0, NULL); 8681 if (wpa_s->p2p_nfc_tag_enabled) 8682 wpas_p2p_remove_pending_group_interface(wpa_s); 8683 wpa_s->p2p_nfc_tag_enabled = 0; 8684 return 0; 8685 } 8686 8687 if (wpa_s->global->p2p_disabled) 8688 return -1; 8689 8690 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8691 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8692 wpa_s->conf->wps_nfc_dev_pw == NULL || 8693 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8694 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8695 "to allow static handover cases"); 8696 return -1; 8697 } 8698 8699 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8700 8701 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8702 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8703 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8704 if (wpa_s->p2p_oob_dev_pw == NULL) 8705 return -1; 8706 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8707 8708 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 8709 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 8710 /* 8711 * P2P Group Interface present and the command came on group 8712 * interface, so enable the token for the current interface. 8713 */ 8714 wpa_s->create_p2p_iface = 0; 8715 } else { 8716 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 8717 } 8718 8719 if (wpa_s->create_p2p_iface) { 8720 enum wpa_driver_if_type iftype; 8721 /* Prepare to add a new interface for the group */ 8722 iftype = WPA_IF_P2P_GROUP; 8723 if (go_intent == 15) 8724 iftype = WPA_IF_P2P_GO; 8725 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 8726 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 8727 "interface for the group"); 8728 return -1; 8729 } 8730 8731 if_addr = wpa_s->pending_interface_addr; 8732 } else if (wpa_s->p2p_mgmt) 8733 if_addr = wpa_s->parent->own_addr; 8734 else 8735 if_addr = wpa_s->own_addr; 8736 8737 wpa_s->p2p_nfc_tag_enabled = enabled; 8738 8739 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8740 struct hostapd_data *hapd; 8741 if (iface->ap_iface == NULL) 8742 continue; 8743 hapd = iface->ap_iface->bss[0]; 8744 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 8745 hapd->conf->wps_nfc_dh_pubkey = 8746 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 8747 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 8748 hapd->conf->wps_nfc_dh_privkey = 8749 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 8750 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 8751 hapd->conf->wps_nfc_dev_pw = 8752 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8753 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8754 8755 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 8756 wpa_dbg(iface, MSG_DEBUG, 8757 "P2P: Failed to enable NFC Tag for GO"); 8758 } 8759 } 8760 p2p_set_authorized_oob_dev_pw_id( 8761 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 8762 if_addr); 8763 8764 return 0; 8765 } 8766 8767 #endif /* CONFIG_WPS_NFC */ 8768 8769 8770 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 8771 struct wpa_used_freq_data *freqs, 8772 unsigned int num) 8773 { 8774 u8 curr_chan, cand, chan; 8775 unsigned int i; 8776 8777 /* 8778 * If possible, optimize the Listen channel to be a channel that is 8779 * already used by one of the other interfaces. 8780 */ 8781 if (!wpa_s->conf->p2p_optimize_listen_chan) 8782 return; 8783 8784 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 8785 return; 8786 8787 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 8788 for (i = 0, cand = 0; i < num; i++) { 8789 ieee80211_freq_to_chan(freqs[i].freq, &chan); 8790 if (curr_chan == chan) { 8791 cand = 0; 8792 break; 8793 } 8794 8795 if (chan == 1 || chan == 6 || chan == 11) 8796 cand = chan; 8797 } 8798 8799 if (cand) { 8800 wpa_dbg(wpa_s, MSG_DEBUG, 8801 "P2P: Update Listen channel to %u based on operating channel", 8802 cand); 8803 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 8804 } 8805 } 8806 8807 8808 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 8809 { 8810 struct hostapd_config *conf; 8811 struct p2p_go_neg_results params; 8812 struct csa_settings csa_settings; 8813 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8814 int old_freq = current_ssid->frequency; 8815 int ret; 8816 8817 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 8818 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 8819 return -1; 8820 } 8821 8822 /* 8823 * TODO: This function may not always work correctly. For example, 8824 * when we have a running GO and a BSS on a DFS channel. 8825 */ 8826 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8827 wpa_dbg(wpa_s, MSG_DEBUG, 8828 "P2P CSA: Failed to select new frequency for GO"); 8829 return -1; 8830 } 8831 8832 if (current_ssid->frequency == params.freq) { 8833 wpa_dbg(wpa_s, MSG_DEBUG, 8834 "P2P CSA: Selected same frequency - not moving GO"); 8835 return 0; 8836 } 8837 8838 conf = hostapd_config_defaults(); 8839 if (!conf) { 8840 wpa_dbg(wpa_s, MSG_DEBUG, 8841 "P2P CSA: Failed to allocate default config"); 8842 return -1; 8843 } 8844 8845 current_ssid->frequency = params.freq; 8846 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 8847 wpa_dbg(wpa_s, MSG_DEBUG, 8848 "P2P CSA: Failed to create new GO config"); 8849 ret = -1; 8850 goto out; 8851 } 8852 8853 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 8854 wpa_dbg(wpa_s, MSG_DEBUG, 8855 "P2P CSA: CSA to a different band is not supported"); 8856 ret = -1; 8857 goto out; 8858 } 8859 8860 os_memset(&csa_settings, 0, sizeof(csa_settings)); 8861 csa_settings.cs_count = P2P_GO_CSA_COUNT; 8862 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 8863 csa_settings.freq_params.freq = params.freq; 8864 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 8865 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 8866 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 8867 8868 if (conf->ieee80211ac) { 8869 int freq1 = 0, freq2 = 0; 8870 u8 chan, opclass; 8871 8872 if (ieee80211_freq_to_channel_ext(params.freq, 8873 conf->secondary_channel, 8874 conf->vht_oper_chwidth, 8875 &opclass, &chan) == 8876 NUM_HOSTAPD_MODES) { 8877 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 8878 ret = -1; 8879 goto out; 8880 } 8881 8882 if (conf->vht_oper_centr_freq_seg0_idx) 8883 freq1 = ieee80211_chan_to_freq( 8884 NULL, opclass, 8885 conf->vht_oper_centr_freq_seg0_idx); 8886 8887 if (conf->vht_oper_centr_freq_seg1_idx) 8888 freq2 = ieee80211_chan_to_freq( 8889 NULL, opclass, 8890 conf->vht_oper_centr_freq_seg1_idx); 8891 8892 if (freq1 < 0 || freq2 < 0) { 8893 wpa_dbg(wpa_s, MSG_DEBUG, 8894 "P2P CSA: Selected invalid VHT center freqs"); 8895 ret = -1; 8896 goto out; 8897 } 8898 8899 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 8900 csa_settings.freq_params.center_freq1 = freq1; 8901 csa_settings.freq_params.center_freq2 = freq2; 8902 8903 switch (conf->vht_oper_chwidth) { 8904 case VHT_CHANWIDTH_80MHZ: 8905 case VHT_CHANWIDTH_80P80MHZ: 8906 csa_settings.freq_params.bandwidth = 80; 8907 break; 8908 case VHT_CHANWIDTH_160MHZ: 8909 csa_settings.freq_params.bandwidth = 160; 8910 break; 8911 } 8912 } 8913 8914 ret = ap_switch_channel(wpa_s, &csa_settings); 8915 out: 8916 current_ssid->frequency = old_freq; 8917 hostapd_config_free(conf); 8918 return ret; 8919 } 8920 8921 8922 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 8923 { 8924 struct p2p_go_neg_results params; 8925 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8926 8927 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 8928 8929 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 8930 current_ssid->frequency); 8931 8932 /* Stop the AP functionality */ 8933 /* TODO: Should do this in a way that does not indicated to possible 8934 * P2P Clients in the group that the group is terminated. */ 8935 wpa_supplicant_ap_deinit(wpa_s); 8936 8937 /* Reselect the GO frequency */ 8938 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8939 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 8940 wpas_p2p_group_delete(wpa_s, 8941 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8942 return; 8943 } 8944 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 8945 params.freq); 8946 8947 if (params.freq && 8948 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 8949 wpa_printf(MSG_DEBUG, 8950 "P2P: Selected freq (%u MHz) is not valid for P2P", 8951 params.freq); 8952 wpas_p2p_group_delete(wpa_s, 8953 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8954 return; 8955 } 8956 8957 /* Update the frequency */ 8958 current_ssid->frequency = params.freq; 8959 wpa_s->connect_without_scan = current_ssid; 8960 wpa_s->reassociate = 1; 8961 wpa_s->disconnected = 0; 8962 wpa_supplicant_req_scan(wpa_s, 0, 0); 8963 } 8964 8965 8966 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 8967 { 8968 struct wpa_supplicant *wpa_s = eloop_ctx; 8969 8970 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 8971 return; 8972 8973 wpas_p2p_go_update_common_freqs(wpa_s); 8974 8975 /* Do not move GO in the middle of a CSA */ 8976 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 8977 wpa_printf(MSG_DEBUG, 8978 "P2P: CSA is in progress - not moving GO"); 8979 return; 8980 } 8981 8982 /* 8983 * First, try a channel switch flow. If it is not supported or fails, 8984 * take down the GO and bring it up again. 8985 */ 8986 if (wpas_p2p_move_go_csa(wpa_s) < 0) 8987 wpas_p2p_move_go_no_csa(wpa_s); 8988 } 8989 8990 8991 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 8992 { 8993 struct wpa_supplicant *wpa_s = eloop_ctx; 8994 struct wpa_used_freq_data *freqs = NULL; 8995 unsigned int num = wpa_s->num_multichan_concurrent; 8996 8997 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 8998 if (!freqs) 8999 return; 9000 9001 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 9002 9003 /* Previous attempt to move a GO was not possible -- try again. */ 9004 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 9005 WPAS_P2P_CHANNEL_UPDATE_ANY); 9006 9007 os_free(freqs); 9008 } 9009 9010 9011 /* 9012 * Consider moving a GO from its currently used frequency: 9013 * 1. It is possible that due to regulatory consideration the frequency 9014 * can no longer be used and there is a need to evacuate the GO. 9015 * 2. It is possible that due to MCC considerations, it would be preferable 9016 * to move the GO to a channel that is currently used by some other 9017 * station interface. 9018 * 9019 * In case a frequency that became invalid is once again valid, cancel a 9020 * previously initiated GO frequency change. 9021 */ 9022 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 9023 struct wpa_used_freq_data *freqs, 9024 unsigned int num) 9025 { 9026 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 9027 unsigned int timeout; 9028 int freq; 9029 9030 wpas_p2p_go_update_common_freqs(wpa_s); 9031 9032 freq = wpa_s->current_ssid->frequency; 9033 for (i = 0, invalid_freq = 0; i < num; i++) { 9034 if (freqs[i].freq == freq) { 9035 flags = freqs[i].flags; 9036 9037 /* The channel is invalid, must change it */ 9038 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 9039 wpa_dbg(wpa_s, MSG_DEBUG, 9040 "P2P: Freq=%d MHz no longer valid for GO", 9041 freq); 9042 invalid_freq = 1; 9043 } 9044 } else if (freqs[i].flags == 0) { 9045 /* Freq is not used by any other station interface */ 9046 continue; 9047 } else if (!p2p_supported_freq(wpa_s->global->p2p, 9048 freqs[i].freq)) { 9049 /* Freq is not valid for P2P use cases */ 9050 continue; 9051 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9052 P2P_GO_FREQ_MOVE_SCM) { 9053 policy_move = 1; 9054 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9055 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 9056 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9057 policy_move = 1; 9058 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 9059 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9060 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9061 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9062 policy_move = 1; 9063 } else if ((wpa_s->drv_flags & 9064 WPA_DRIVER_FLAGS_AP_CSA) && 9065 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9066 u8 chan; 9067 9068 /* 9069 * We do not support CSA between bands, so move 9070 * GO only within the same band. 9071 */ 9072 if (wpa_s->ap_iface->current_mode->mode == 9073 ieee80211_freq_to_chan(freqs[i].freq, 9074 &chan)) 9075 policy_move = 1; 9076 } 9077 } 9078 } 9079 9080 wpa_dbg(wpa_s, MSG_DEBUG, 9081 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9082 invalid_freq, policy_move, flags); 9083 9084 /* 9085 * The channel is valid, or we are going to have a policy move, so 9086 * cancel timeout. 9087 */ 9088 if (!invalid_freq || policy_move) { 9089 wpa_dbg(wpa_s, MSG_DEBUG, 9090 "P2P: Cancel a GO move from freq=%d MHz", freq); 9091 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9092 9093 if (wpas_p2p_in_progress(wpa_s)) { 9094 wpa_dbg(wpa_s, MSG_DEBUG, 9095 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9096 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9097 wpa_s, NULL); 9098 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9099 wpas_p2p_reconsider_moving_go, 9100 wpa_s, NULL); 9101 return; 9102 } 9103 } 9104 9105 if (!invalid_freq && (!policy_move || flags != 0)) { 9106 wpa_dbg(wpa_s, MSG_DEBUG, 9107 "P2P: Not initiating a GO frequency change"); 9108 return; 9109 } 9110 9111 /* 9112 * Do not consider moving GO if it is in the middle of a CSA. When the 9113 * CSA is finished this flow should be retriggered. 9114 */ 9115 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9116 wpa_dbg(wpa_s, MSG_DEBUG, 9117 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9118 return; 9119 } 9120 9121 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9122 timeout = P2P_GO_FREQ_CHANGE_TIME; 9123 else 9124 timeout = 0; 9125 9126 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9127 freq, timeout); 9128 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9129 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9130 } 9131 9132 9133 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9134 struct wpa_used_freq_data *freqs, 9135 unsigned int num, 9136 enum wpas_p2p_channel_update_trig trig) 9137 { 9138 struct wpa_supplicant *ifs; 9139 9140 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9141 NULL); 9142 9143 /* 9144 * Travers all the radio interfaces, and for each GO interface, check 9145 * if there is a need to move the GO from the frequency it is using, 9146 * or in case the frequency is valid again, cancel the evacuation flow. 9147 */ 9148 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9149 radio_list) { 9150 if (ifs->current_ssid == NULL || 9151 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9152 continue; 9153 9154 /* 9155 * The GO was just started or completed channel switch, no need 9156 * to move it. 9157 */ 9158 if (wpa_s == ifs && 9159 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9160 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9161 wpa_dbg(wpa_s, MSG_DEBUG, 9162 "P2P: GO move - schedule re-consideration"); 9163 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9164 wpas_p2p_reconsider_moving_go, 9165 wpa_s, NULL); 9166 continue; 9167 } 9168 9169 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9170 } 9171 } 9172 9173 9174 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9175 { 9176 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9177 return; 9178 9179 wpas_p2p_update_channel_list(wpa_s, 9180 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9181 } 9182 9183 9184 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9185 { 9186 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9187 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9188 "the management interface is being removed"); 9189 wpas_p2p_deinit_global(wpa_s->global); 9190 } 9191 } 9192 9193 9194 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9195 { 9196 if (wpa_s->ap_iface->bss) 9197 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9198 wpas_p2p_group_deinit(wpa_s); 9199 } 9200
