p2p_supplicant.c revision 014a3ff83915745d57480e99b47e281a82143c79
1/* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10#include "includes.h" 11 12#include "common.h" 13#include "eloop.h" 14#include "common/ieee802_11_common.h" 15#include "common/ieee802_11_defs.h" 16#include "common/wpa_ctrl.h" 17#include "wps/wps_i.h" 18#include "p2p/p2p.h" 19#include "ap/hostapd.h" 20#include "ap/ap_config.h" 21#include "ap/sta_info.h" 22#include "ap/ap_drv_ops.h" 23#include "ap/wps_hostapd.h" 24#include "ap/p2p_hostapd.h" 25#include "ap/dfs.h" 26#include "eapol_supp/eapol_supp_sm.h" 27#include "rsn_supp/wpa.h" 28#include "wpa_supplicant_i.h" 29#include "driver_i.h" 30#include "ap.h" 31#include "config_ssid.h" 32#include "config.h" 33#include "notify.h" 34#include "scan.h" 35#include "bss.h" 36#include "offchannel.h" 37#include "wps_supplicant.h" 38#include "p2p_supplicant.h" 39#include "wifi_display.h" 40 41 42/* 43 * How many times to try to scan to find the GO before giving up on join 44 * request. 45 */ 46#define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 47 48#define P2P_AUTO_PD_SCAN_ATTEMPTS 5 49 50/** 51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54#define P2P_GO_FREQ_CHANGE_TIME 5 55 56/** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60#define P2P_GO_CSA_COUNT 7 61#define P2P_GO_CSA_BLOCK_TX 0 62 63#ifndef P2P_MAX_CLIENT_IDLE 64/* 65 * How many seconds to try to reconnect to the GO when connection in P2P client 66 * role has been lost. 67 */ 68#define P2P_MAX_CLIENT_IDLE 10 69#endif /* P2P_MAX_CLIENT_IDLE */ 70 71#ifndef P2P_MAX_INITIAL_CONN_WAIT 72/* 73 * How many seconds to wait for initial 4-way handshake to get completed after 74 * WPS provisioning step or after the re-invocation of a persistent group on a 75 * P2P Client. 76 */ 77#define P2P_MAX_INITIAL_CONN_WAIT 10 78#endif /* P2P_MAX_INITIAL_CONN_WAIT */ 79 80#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 81/* 82 * How many seconds to wait for initial 4-way handshake to get completed after 83 * WPS provisioning step on the GO. This controls the extra time the P2P 84 * operation is considered to be in progress (e.g., to delay other scans) after 85 * WPS provisioning has been completed on the GO during group formation. 86 */ 87#define P2P_MAX_INITIAL_CONN_WAIT_GO 10 88#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 89 90#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 91/* 92 * How many seconds to wait for initial 4-way handshake to get completed after 93 * re-invocation of a persistent group on the GO when the client is expected 94 * to connect automatically (no user interaction). 95 */ 96#define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 97#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 98 99#define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 100 101/* 102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 103 * was not possible. 104 */ 105#define P2P_RECONSIDER_GO_MOVE_DELAY 30 106 107enum 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 121static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 122static struct wpa_supplicant * 123wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 124 int go); 125static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 126 const u8 *ssid, size_t ssid_len); 127static 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); 131static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 132 const u8 *ssid, size_t ssid_len); 133static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 134static 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); 138static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 139static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 140static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 141static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 142static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 143 void *timeout_ctx); 144static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 145static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 146 int group_added); 147static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 148static void wpas_stop_listen(void *ctx); 149static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 150static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 151static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 152 enum wpa_driver_if_type type); 153static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 154 int already_deleted); 155static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 156 struct wpa_used_freq_data *freqs, 157 unsigned int num); 158static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 159static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 160static void 161wpas_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); 164static 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 */ 171static 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 */ 194static unsigned int 195wpas_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 225static 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 245static 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 294static 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 327static 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 343static 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; 354 355 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 356 return -1; 357 358 if (wpa_s->p2p_scan_work) { 359 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 360 return -1; 361 } 362 363 params = os_zalloc(sizeof(*params)); 364 if (params == NULL) 365 return -1; 366 367 /* P2P Wildcard SSID */ 368 params->num_ssids = 1; 369 n = os_malloc(P2P_WILDCARD_SSID_LEN); 370 if (n == NULL) 371 goto fail; 372 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 373 params->ssids[0].ssid = n; 374 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 375 376 wpa_s->wps->dev.p2p = 1; 377 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 378 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 379 num_req_dev_types, req_dev_types); 380 if (wps_ie == NULL) 381 goto fail; 382 383 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 384 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 385 if (ies == NULL) { 386 wpabuf_free(wps_ie); 387 goto fail; 388 } 389 wpabuf_put_buf(ies, wps_ie); 390 wpabuf_free(wps_ie); 391 392 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 393 394 params->p2p_probe = 1; 395 n = os_malloc(wpabuf_len(ies)); 396 if (n == NULL) { 397 wpabuf_free(ies); 398 goto fail; 399 } 400 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 401 params->extra_ies = n; 402 params->extra_ies_len = wpabuf_len(ies); 403 wpabuf_free(ies); 404 405 switch (type) { 406 case P2P_SCAN_SOCIAL: 407 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1, 408 sizeof(int)); 409 if (params->freqs == NULL) 410 goto fail; 411 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 412 if (wpas_p2p_search_social_channel( 413 wpa_s, social_channels_freq[i])) 414 params->freqs[num_channels++] = 415 social_channels_freq[i]; 416 } 417 params->freqs[num_channels++] = 0; 418 break; 419 case P2P_SCAN_FULL: 420 break; 421 case P2P_SCAN_SPECIFIC: 422 params->freqs = os_calloc(2, sizeof(int)); 423 if (params->freqs == NULL) 424 goto fail; 425 params->freqs[0] = freq; 426 params->freqs[1] = 0; 427 break; 428 case P2P_SCAN_SOCIAL_PLUS_ONE: 429 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2, 430 sizeof(int)); 431 if (params->freqs == NULL) 432 goto fail; 433 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 434 if (wpas_p2p_search_social_channel( 435 wpa_s, social_channels_freq[i])) 436 params->freqs[num_channels++] = 437 social_channels_freq[i]; 438 } 439 if (p2p_supported_freq(wpa_s->global->p2p, freq)) 440 params->freqs[num_channels++] = freq; 441 params->freqs[num_channels++] = 0; 442 break; 443 } 444 445 radio_remove_works(wpa_s, "p2p-scan", 0); 446 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 447 params) < 0) 448 goto fail; 449 return 0; 450 451fail: 452 wpa_scan_free_params(params); 453 return -1; 454} 455 456 457static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 458{ 459 switch (p2p_group_interface) { 460 case P2P_GROUP_INTERFACE_PENDING: 461 return WPA_IF_P2P_GROUP; 462 case P2P_GROUP_INTERFACE_GO: 463 return WPA_IF_P2P_GO; 464 case P2P_GROUP_INTERFACE_CLIENT: 465 return WPA_IF_P2P_CLIENT; 466 } 467 468 return WPA_IF_P2P_GROUP; 469} 470 471 472static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 473 const u8 *ssid, 474 size_t ssid_len, int *go) 475{ 476 struct wpa_ssid *s; 477 478 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 479 for (s = wpa_s->conf->ssid; s; s = s->next) { 480 if (s->disabled != 0 || !s->p2p_group || 481 s->ssid_len != ssid_len || 482 os_memcmp(ssid, s->ssid, ssid_len) != 0) 483 continue; 484 if (s->mode == WPAS_MODE_P2P_GO && 485 s != wpa_s->current_ssid) 486 continue; 487 if (go) 488 *go = s->mode == WPAS_MODE_P2P_GO; 489 return wpa_s; 490 } 491 } 492 493 return NULL; 494} 495 496 497static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx) 498{ 499 struct wpa_supplicant *wpa_s = eloop_ctx; 500 wpa_printf(MSG_DEBUG, 501 "P2P: Complete previously requested removal of %s", 502 wpa_s->ifname); 503 wpas_p2p_disconnect(wpa_s); 504} 505 506 507static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s, 508 struct wpa_supplicant *calling_wpa_s) 509{ 510 if (calling_wpa_s == wpa_s && wpa_s && 511 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 512 /* 513 * The calling wpa_s instance is going to be removed. Do that 514 * from an eloop callback to keep the instance available until 515 * the caller has returned. This my be needed, e.g., to provide 516 * control interface responses on the per-interface socket. 517 */ 518 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect, 519 wpa_s, NULL) < 0) 520 return -1; 521 return 0; 522 } 523 524 return wpas_p2p_disconnect(wpa_s); 525} 526 527 528/* Determine total number of clients in active groups where we are the GO */ 529static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s) 530{ 531 unsigned int count = 0; 532 struct wpa_ssid *s; 533 534 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 535 for (s = wpa_s->conf->ssid; s; s = s->next) { 536 wpa_printf(MSG_DEBUG, 537 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 538 wpa_s, s, s->disabled, s->p2p_group, 539 s->mode); 540 if (!s->disabled && s->p2p_group && 541 s->mode == WPAS_MODE_P2P_GO) { 542 count += p2p_get_group_num_members( 543 wpa_s->p2p_group); 544 } 545 } 546 } 547 548 return count; 549} 550 551 552static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s) 553{ 554 return !wpa_s->p2p_mgmt && wpa_s->current_ssid && 555 !wpa_s->current_ssid->disabled && 556 wpa_s->current_ssid->p2p_group && 557 wpa_s->current_ssid->p2p_persistent_group; 558} 559 560 561static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s) 562{ 563 return p2p_is_active_persistent_group(wpa_s) && 564 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO; 565} 566 567 568/* Find an interface for a P2P group where we are the GO */ 569static struct wpa_supplicant * 570wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s) 571{ 572 struct wpa_supplicant *save = NULL; 573 574 if (!wpa_s) 575 return NULL; 576 577 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 578 if (!p2p_is_active_persistent_go(wpa_s)) 579 continue; 580 581 /* Prefer a group with connected clients */ 582 if (p2p_get_group_num_members(wpa_s->p2p_group)) 583 return wpa_s; 584 save = wpa_s; 585 } 586 587 /* No group with connected clients, so pick the one without (if any) */ 588 return save; 589} 590 591 592static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s) 593{ 594 return p2p_is_active_persistent_group(wpa_s) && 595 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 596} 597 598 599/* Find an interface for a P2P group where we are the P2P Client */ 600static struct wpa_supplicant * 601wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s) 602{ 603 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 604 if (p2p_is_active_persistent_cli(wpa_s)) 605 return wpa_s; 606 } 607 608 return NULL; 609} 610 611 612/* Find a persistent group where we are the GO */ 613static struct wpa_ssid * 614wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s) 615{ 616 struct wpa_ssid *s; 617 618 for (s = wpa_s->conf->ssid; s; s = s->next) { 619 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO) 620 return s; 621 } 622 623 return NULL; 624} 625 626 627static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role, 628 unsigned int *force_freq, 629 unsigned int *pref_freq) 630{ 631 struct wpa_supplicant *wpa_s = ctx; 632 struct wpa_ssid *s; 633 u8 conncap = P2PS_SETUP_NONE; 634 unsigned int owned_members = 0; 635 struct wpa_supplicant *go_wpa_s, *cli_wpa_s; 636 struct wpa_ssid *persistent_go; 637 int p2p_no_group_iface; 638 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 639 640 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role); 641 642 if (force_freq) 643 *force_freq = 0; 644 if (pref_freq) 645 *pref_freq = 0; 646 647 size = P2P_MAX_PREF_CHANNELS; 648 if (force_freq && pref_freq && 649 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq, 650 (int *) pref_freq, 0, pref_freq_list, &size)) 651 wpas_p2p_set_own_freq_preference(wpa_s, 652 *force_freq ? *force_freq : 653 *pref_freq); 654 655 /* 656 * For non-concurrent capable devices: 657 * If persistent_go, then no new. 658 * If GO, then no client. 659 * If client, then no GO. 660 */ 661 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 662 if (go_wpa_s) 663 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group); 664 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 665 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s); 666 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s); 667 668 wpa_printf(MSG_DEBUG, 669 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p", 670 go_wpa_s, owned_members, cli_wpa_s, persistent_go); 671 672 /* If not concurrent, restrict our choices */ 673 if (p2p_no_group_iface) { 674 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface"); 675 676 if (cli_wpa_s) 677 return P2PS_SETUP_NONE; 678 679 if (go_wpa_s) { 680 if (role == P2PS_SETUP_CLIENT || 681 incoming == P2PS_SETUP_GROUP_OWNER || 682 p2p_client_limit_reached(go_wpa_s->p2p_group)) 683 return P2PS_SETUP_NONE; 684 685 return P2PS_SETUP_GROUP_OWNER; 686 } 687 688 if (persistent_go) { 689 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) { 690 if (!incoming) 691 return P2PS_SETUP_GROUP_OWNER | 692 P2PS_SETUP_CLIENT; 693 if (incoming == P2PS_SETUP_NEW) { 694 u8 r; 695 696 if (os_get_random(&r, sizeof(r)) < 0 || 697 (r & 1)) 698 return P2PS_SETUP_CLIENT; 699 return P2PS_SETUP_GROUP_OWNER; 700 } 701 } 702 } 703 } 704 705 /* If a required role has been specified, handle it here */ 706 if (role && role != P2PS_SETUP_NEW) { 707 switch (incoming) { 708 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 709 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 710 /* 711 * Peer has an active GO, so if the role allows it and 712 * we do not have any active roles, become client. 713 */ 714 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && 715 !cli_wpa_s) 716 return P2PS_SETUP_CLIENT; 717 718 /* fall through */ 719 720 case P2PS_SETUP_NONE: 721 case P2PS_SETUP_NEW: 722 conncap = role; 723 goto grp_owner; 724 725 case P2PS_SETUP_GROUP_OWNER: 726 /* 727 * Must be a complimentary role - cannot be a client to 728 * more than one peer. 729 */ 730 if (incoming == role || cli_wpa_s) 731 return P2PS_SETUP_NONE; 732 733 return P2PS_SETUP_CLIENT; 734 735 case P2PS_SETUP_CLIENT: 736 /* Must be a complimentary role */ 737 if (incoming != role) { 738 conncap = P2PS_SETUP_GROUP_OWNER; 739 goto grp_owner; 740 } 741 742 default: 743 return P2PS_SETUP_NONE; 744 } 745 } 746 747 /* 748 * For now, we only will support ownership of one group, and being a 749 * client of one group. Therefore, if we have either an existing GO 750 * group, or an existing client group, we will not do a new GO 751 * negotiation, but rather try to re-use the existing groups. 752 */ 753 switch (incoming) { 754 case P2PS_SETUP_NONE: 755 case P2PS_SETUP_NEW: 756 if (cli_wpa_s) 757 conncap = P2PS_SETUP_GROUP_OWNER; 758 else if (!owned_members) 759 conncap = P2PS_SETUP_NEW; 760 else if (incoming == P2PS_SETUP_NONE) 761 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT; 762 else 763 conncap = P2PS_SETUP_CLIENT; 764 break; 765 766 case P2PS_SETUP_CLIENT: 767 conncap = P2PS_SETUP_GROUP_OWNER; 768 break; 769 770 case P2PS_SETUP_GROUP_OWNER: 771 if (!cli_wpa_s) 772 conncap = P2PS_SETUP_CLIENT; 773 break; 774 775 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 776 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 777 if (cli_wpa_s) 778 conncap = P2PS_SETUP_GROUP_OWNER; 779 else { 780 u8 r; 781 782 if (os_get_random(&r, sizeof(r)) < 0 || 783 (r & 1)) 784 conncap = P2PS_SETUP_CLIENT; 785 else 786 conncap = P2PS_SETUP_GROUP_OWNER; 787 } 788 break; 789 790 default: 791 return P2PS_SETUP_NONE; 792 } 793 794grp_owner: 795 if ((conncap & P2PS_SETUP_GROUP_OWNER) || 796 (!incoming && (conncap & P2PS_SETUP_NEW))) { 797 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group)) 798 conncap &= ~P2PS_SETUP_GROUP_OWNER; 799 800 s = wpas_p2p_get_persistent_go(wpa_s); 801 if (!s && !go_wpa_s && p2p_no_group_iface) { 802 p2p_set_intended_addr(wpa_s->global->p2p, 803 wpa_s->own_addr); 804 } else if (!s && !go_wpa_s) { 805 if (wpas_p2p_add_group_interface(wpa_s, 806 WPA_IF_P2P_GO) < 0) { 807 wpa_printf(MSG_ERROR, 808 "P2P: Failed to allocate a new interface for the group"); 809 return P2PS_SETUP_NONE; 810 } 811 wpa_s->global->pending_group_iface_for_p2ps = 1; 812 p2p_set_intended_addr(wpa_s->global->p2p, 813 wpa_s->pending_interface_addr); 814 } 815 } 816 817 return conncap; 818} 819 820 821static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 822 enum p2p_group_removal_reason removal_reason) 823{ 824 struct wpa_ssid *ssid; 825 char *gtype; 826 const char *reason; 827 828 ssid = wpa_s->current_ssid; 829 if (ssid == NULL) { 830 /* 831 * The current SSID was not known, but there may still be a 832 * pending P2P group interface waiting for provisioning or a 833 * P2P group that is trying to reconnect. 834 */ 835 ssid = wpa_s->conf->ssid; 836 while (ssid) { 837 if (ssid->p2p_group && ssid->disabled != 2) 838 break; 839 ssid = ssid->next; 840 } 841 if (ssid == NULL && 842 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 843 { 844 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 845 "not found"); 846 return -1; 847 } 848 } 849 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 850 gtype = "GO"; 851 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 852 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 853 wpa_s->reassociate = 0; 854 wpa_s->disconnected = 1; 855 gtype = "client"; 856 } else 857 gtype = "GO"; 858 859 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 860 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 861 862 if (os_strcmp(gtype, "client") == 0) { 863 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 864 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal, 865 wpa_s, NULL)) { 866 wpa_printf(MSG_DEBUG, 867 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal"); 868 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE; 869 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, 870 wpa_s, NULL); 871 } 872 } 873 874 if (wpa_s->cross_connect_in_use) { 875 wpa_s->cross_connect_in_use = 0; 876 wpa_msg_global(wpa_s->parent, MSG_INFO, 877 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 878 wpa_s->ifname, wpa_s->cross_connect_uplink); 879 } 880 switch (removal_reason) { 881 case P2P_GROUP_REMOVAL_REQUESTED: 882 reason = " reason=REQUESTED"; 883 break; 884 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 885 reason = " reason=FORMATION_FAILED"; 886 break; 887 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 888 reason = " reason=IDLE"; 889 break; 890 case P2P_GROUP_REMOVAL_UNAVAILABLE: 891 reason = " reason=UNAVAILABLE"; 892 break; 893 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 894 reason = " reason=GO_ENDING_SESSION"; 895 break; 896 case P2P_GROUP_REMOVAL_PSK_FAILURE: 897 reason = " reason=PSK_FAILURE"; 898 break; 899 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 900 reason = " reason=FREQ_CONFLICT"; 901 break; 902 default: 903 reason = ""; 904 break; 905 } 906 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 907 wpa_msg_global(wpa_s->parent, MSG_INFO, 908 P2P_EVENT_GROUP_REMOVED "%s %s%s", 909 wpa_s->ifname, gtype, reason); 910 } 911 912 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 913 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 914 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 915 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 916 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 917 wpa_s->parent, NULL) > 0) { 918 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 919 "timeout"); 920 wpa_s->p2p_in_provisioning = 0; 921 wpas_p2p_group_formation_failed(wpa_s, 1); 922 } 923 924 wpa_s->p2p_in_invitation = 0; 925 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 926 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL); 927 928 /* 929 * Make sure wait for the first client does not remain active after the 930 * group has been removed. 931 */ 932 wpa_s->global->p2p_go_wait_client.sec = 0; 933 934 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 935 struct wpa_global *global; 936 char *ifname; 937 enum wpa_driver_if_type type; 938 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 939 wpa_s->ifname); 940 global = wpa_s->global; 941 ifname = os_strdup(wpa_s->ifname); 942 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 943 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL); 944 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 945 wpa_s = global->ifaces; 946 if (wpa_s && ifname) 947 wpa_drv_if_remove(wpa_s, type, ifname); 948 os_free(ifname); 949 return 1; 950 } 951 952 if (!wpa_s->p2p_go_group_formation_completed) { 953 wpa_s->global->p2p_group_formation = NULL; 954 wpa_s->p2p_in_provisioning = 0; 955 } 956 957 wpa_s->show_group_started = 0; 958 os_free(wpa_s->go_params); 959 wpa_s->go_params = NULL; 960 961 os_free(wpa_s->p2p_group_common_freqs); 962 wpa_s->p2p_group_common_freqs = NULL; 963 wpa_s->p2p_group_common_freqs_num = 0; 964 965 wpa_s->waiting_presence_resp = 0; 966 967 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 968 if (ssid && (ssid->p2p_group || 969 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 970 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 971 int id = ssid->id; 972 if (ssid == wpa_s->current_ssid) { 973 wpa_sm_set_config(wpa_s->wpa, NULL); 974 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 975 wpa_s->current_ssid = NULL; 976 } 977 /* 978 * Networks objects created during any P2P activities are not 979 * exposed out as they might/will confuse certain non-P2P aware 980 * applications since these network objects won't behave like 981 * regular ones. 982 * 983 * Likewise, we don't send out network removed signals for such 984 * network objects. 985 */ 986 wpa_config_remove_network(wpa_s->conf, id); 987 wpa_supplicant_clear_status(wpa_s); 988 wpa_supplicant_cancel_sched_scan(wpa_s); 989 } else { 990 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 991 "found"); 992 } 993 if (wpa_s->ap_iface) 994 wpa_supplicant_ap_deinit(wpa_s); 995 else 996 wpa_drv_deinit_p2p_cli(wpa_s); 997 998 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 999 1000 return 0; 1001} 1002 1003 1004static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 1005 u8 *go_dev_addr, 1006 const u8 *ssid, size_t ssid_len) 1007{ 1008 struct wpa_bss *bss; 1009 const u8 *bssid; 1010 struct wpabuf *p2p; 1011 u8 group_capab; 1012 const u8 *addr; 1013 1014 if (wpa_s->go_params) 1015 bssid = wpa_s->go_params->peer_interface_addr; 1016 else 1017 bssid = wpa_s->bssid; 1018 1019 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 1020 if (bss == NULL && wpa_s->go_params && 1021 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 1022 bss = wpa_bss_get_p2p_dev_addr( 1023 wpa_s, wpa_s->go_params->peer_device_addr); 1024 if (bss == NULL) { 1025 u8 iface_addr[ETH_ALEN]; 1026 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 1027 iface_addr) == 0) 1028 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 1029 } 1030 if (bss == NULL) { 1031 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1032 "group is persistent - BSS " MACSTR " not found", 1033 MAC2STR(bssid)); 1034 return 0; 1035 } 1036 1037 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1038 if (p2p == NULL) 1039 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 1040 P2P_IE_VENDOR_TYPE); 1041 if (p2p == NULL) { 1042 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1043 "group is persistent - BSS " MACSTR 1044 " did not include P2P IE", MAC2STR(bssid)); 1045 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 1046 (u8 *) (bss + 1), bss->ie_len); 1047 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 1048 ((u8 *) bss + 1) + bss->ie_len, 1049 bss->beacon_ie_len); 1050 return 0; 1051 } 1052 1053 group_capab = p2p_get_group_capab(p2p); 1054 addr = p2p_get_go_dev_addr(p2p); 1055 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 1056 "group_capab=0x%x", group_capab); 1057 if (addr) { 1058 os_memcpy(go_dev_addr, addr, ETH_ALEN); 1059 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 1060 MAC2STR(addr)); 1061 } else 1062 os_memset(go_dev_addr, 0, ETH_ALEN); 1063 wpabuf_free(p2p); 1064 1065 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 1066 "go_dev_addr=" MACSTR, 1067 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 1068 1069 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1070} 1071 1072 1073static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 1074 struct wpa_ssid *ssid, 1075 const u8 *go_dev_addr) 1076{ 1077 struct wpa_ssid *s; 1078 int changed = 0; 1079 1080 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 1081 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 1082 for (s = wpa_s->conf->ssid; s; s = s->next) { 1083 if (s->disabled == 2 && 1084 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 1085 s->ssid_len == ssid->ssid_len && 1086 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 1087 break; 1088 } 1089 1090 if (s) { 1091 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 1092 "entry"); 1093 if (ssid->passphrase && !s->passphrase) 1094 changed = 1; 1095 else if (ssid->passphrase && s->passphrase && 1096 os_strcmp(ssid->passphrase, s->passphrase) != 0) 1097 changed = 1; 1098 } else { 1099 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 1100 "entry"); 1101 changed = 1; 1102 s = wpa_config_add_network(wpa_s->conf); 1103 if (s == NULL) 1104 return -1; 1105 1106 /* 1107 * Instead of network_added we emit persistent_group_added 1108 * notification. Also to keep the defense checks in 1109 * persistent_group obj registration method, we set the 1110 * relevant flags in s to designate it as a persistent group. 1111 */ 1112 s->p2p_group = 1; 1113 s->p2p_persistent_group = 1; 1114 wpas_notify_persistent_group_added(wpa_s, s); 1115 wpa_config_set_network_defaults(s); 1116 } 1117 1118 s->p2p_group = 1; 1119 s->p2p_persistent_group = 1; 1120 s->disabled = 2; 1121 s->bssid_set = 1; 1122 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 1123 s->mode = ssid->mode; 1124 s->auth_alg = WPA_AUTH_ALG_OPEN; 1125 s->key_mgmt = WPA_KEY_MGMT_PSK; 1126 s->proto = WPA_PROTO_RSN; 1127 s->pairwise_cipher = WPA_CIPHER_CCMP; 1128 s->export_keys = 1; 1129 if (ssid->passphrase) { 1130 os_free(s->passphrase); 1131 s->passphrase = os_strdup(ssid->passphrase); 1132 } 1133 if (ssid->psk_set) { 1134 s->psk_set = 1; 1135 os_memcpy(s->psk, ssid->psk, 32); 1136 } 1137 if (s->passphrase && !s->psk_set) 1138 wpa_config_update_psk(s); 1139 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 1140 os_free(s->ssid); 1141 s->ssid = os_malloc(ssid->ssid_len); 1142 } 1143 if (s->ssid) { 1144 s->ssid_len = ssid->ssid_len; 1145 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 1146 } 1147 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 1148 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 1149 wpa_s->global->add_psk = NULL; 1150 changed = 1; 1151 } 1152 1153 if (changed && wpa_s->conf->update_config && 1154 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 1155 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1156 } 1157 1158 return s->id; 1159} 1160 1161 1162static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 1163 const u8 *addr) 1164{ 1165 struct wpa_ssid *ssid, *s; 1166 u8 *n; 1167 size_t i; 1168 int found = 0; 1169 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 1170 1171 ssid = wpa_s->current_ssid; 1172 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 1173 !ssid->p2p_persistent_group) 1174 return; 1175 1176 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 1177 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 1178 continue; 1179 1180 if (s->ssid_len == ssid->ssid_len && 1181 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 1182 break; 1183 } 1184 1185 if (s == NULL) 1186 return; 1187 1188 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 1189 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr, 1190 ETH_ALEN) != 0) 1191 continue; 1192 1193 if (i == s->num_p2p_clients - 1) 1194 return; /* already the most recent entry */ 1195 1196 /* move the entry to mark it most recent */ 1197 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 1198 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 1199 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 1200 os_memcpy(s->p2p_client_list + 1201 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr, 1202 ETH_ALEN); 1203 os_memset(s->p2p_client_list + 1204 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1205 0xff, ETH_ALEN); 1206 found = 1; 1207 break; 1208 } 1209 1210 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 1211 n = os_realloc_array(s->p2p_client_list, 1212 s->num_p2p_clients + 1, 2 * ETH_ALEN); 1213 if (n == NULL) 1214 return; 1215 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr, 1216 ETH_ALEN); 1217 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN, 1218 0xff, ETH_ALEN); 1219 s->p2p_client_list = n; 1220 s->num_p2p_clients++; 1221 } else if (!found && s->p2p_client_list) { 1222 /* Not enough room for an additional entry - drop the oldest 1223 * entry */ 1224 os_memmove(s->p2p_client_list, 1225 s->p2p_client_list + 2 * ETH_ALEN, 1226 (s->num_p2p_clients - 1) * 2 * ETH_ALEN); 1227 os_memcpy(s->p2p_client_list + 1228 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, 1229 addr, ETH_ALEN); 1230 os_memset(s->p2p_client_list + 1231 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1232 0xff, ETH_ALEN); 1233 } 1234 1235 if (p2p_wpa_s->conf->update_config && 1236 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 1237 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1238} 1239 1240 1241static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s, 1242 int go, struct wpa_ssid *ssid, int freq, 1243 const u8 *psk, const char *passphrase, 1244 const u8 *go_dev_addr, int persistent, 1245 const char *extra) 1246{ 1247 const char *ssid_txt; 1248 char psk_txt[65]; 1249 1250 if (psk) 1251 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32); 1252 else 1253 psk_txt[0] = '\0'; 1254 1255 if (ssid) 1256 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 1257 else 1258 ssid_txt = ""; 1259 1260 if (passphrase && passphrase[0] == '\0') 1261 passphrase = NULL; 1262 1263 /* 1264 * Include PSK/passphrase only in the control interface message and 1265 * leave it out from the debug log entry. 1266 */ 1267 wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO, 1268 P2P_EVENT_GROUP_STARTED 1269 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr=" 1270 MACSTR "%s%s", 1271 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1272 psk ? " psk=" : "", psk_txt, 1273 passphrase ? " passphrase=\"" : "", 1274 passphrase ? passphrase : "", 1275 passphrase ? "\"" : "", 1276 MAC2STR(go_dev_addr), 1277 persistent ? " [PERSISTENT]" : "", extra); 1278 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED 1279 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s", 1280 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1281 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "", 1282 extra); 1283} 1284 1285 1286static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 1287 int success, int already_deleted) 1288{ 1289 struct wpa_ssid *ssid; 1290 int client; 1291 int persistent; 1292 u8 go_dev_addr[ETH_ALEN]; 1293 int network_id = -1; 1294 1295 /* 1296 * This callback is likely called for the main interface. Update wpa_s 1297 * to use the group interface if a new interface was created for the 1298 * group. 1299 */ 1300 if (wpa_s->global->p2p_group_formation) 1301 wpa_s = wpa_s->global->p2p_group_formation; 1302 if (wpa_s->p2p_go_group_formation_completed) { 1303 wpa_s->global->p2p_group_formation = NULL; 1304 wpa_s->p2p_in_provisioning = 0; 1305 } 1306 wpa_s->p2p_in_invitation = 0; 1307 wpa_s->group_formation_reported = 1; 1308 1309 if (!success) { 1310 wpa_msg_global(wpa_s->parent, MSG_INFO, 1311 P2P_EVENT_GROUP_FORMATION_FAILURE); 1312 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1313 if (already_deleted) 1314 return; 1315 wpas_p2p_group_delete(wpa_s, 1316 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1317 return; 1318 } 1319 1320 wpa_msg_global(wpa_s->parent, MSG_INFO, 1321 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1322 1323 ssid = wpa_s->current_ssid; 1324 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1325 ssid->mode = WPAS_MODE_P2P_GO; 1326 p2p_group_notif_formation_done(wpa_s->p2p_group); 1327 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1328 } 1329 1330 persistent = 0; 1331 if (ssid) { 1332 client = ssid->mode == WPAS_MODE_INFRA; 1333 if (ssid->mode == WPAS_MODE_P2P_GO) { 1334 persistent = ssid->p2p_persistent_group; 1335 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1336 ETH_ALEN); 1337 } else 1338 persistent = wpas_p2p_persistent_group(wpa_s, 1339 go_dev_addr, 1340 ssid->ssid, 1341 ssid->ssid_len); 1342 } else { 1343 client = wpa_s->p2p_group_interface == 1344 P2P_GROUP_INTERFACE_CLIENT; 1345 os_memset(go_dev_addr, 0, ETH_ALEN); 1346 } 1347 1348 wpa_s->show_group_started = 0; 1349 if (client) { 1350 /* 1351 * Indicate event only after successfully completed 4-way 1352 * handshake, i.e., when the interface is ready for data 1353 * packets. 1354 */ 1355 wpa_s->show_group_started = 1; 1356 } else { 1357 wpas_p2p_group_started(wpa_s, 1, ssid, 1358 ssid ? ssid->frequency : 0, 1359 ssid && ssid->passphrase == NULL && 1360 ssid->psk_set ? ssid->psk : NULL, 1361 ssid ? ssid->passphrase : NULL, 1362 go_dev_addr, persistent, ""); 1363 wpas_p2p_cross_connect_setup(wpa_s); 1364 wpas_p2p_set_group_idle_timeout(wpa_s); 1365 } 1366 1367 if (persistent) 1368 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 1369 ssid, go_dev_addr); 1370 else { 1371 os_free(wpa_s->global->add_psk); 1372 wpa_s->global->add_psk = NULL; 1373 } 1374 if (network_id < 0 && ssid) 1375 network_id = ssid->id; 1376 if (!client) { 1377 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1378 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1379 } 1380} 1381 1382 1383struct send_action_work { 1384 unsigned int freq; 1385 u8 dst[ETH_ALEN]; 1386 u8 src[ETH_ALEN]; 1387 u8 bssid[ETH_ALEN]; 1388 size_t len; 1389 unsigned int wait_time; 1390 u8 buf[0]; 1391}; 1392 1393 1394static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s) 1395{ 1396 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx; 1397 1398 wpa_printf(MSG_DEBUG, 1399 "P2P: Free Action frame radio work @%p (freq=%u dst=" 1400 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)", 1401 wpa_s->p2p_send_action_work, awork->freq, 1402 MAC2STR(awork->dst), MAC2STR(awork->src), 1403 MAC2STR(awork->bssid), awork->wait_time); 1404 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame", 1405 awork->buf, awork->len); 1406 os_free(awork); 1407 wpa_s->p2p_send_action_work->ctx = NULL; 1408 radio_work_done(wpa_s->p2p_send_action_work); 1409 wpa_s->p2p_send_action_work = NULL; 1410} 1411 1412 1413static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1414 void *timeout_ctx) 1415{ 1416 struct wpa_supplicant *wpa_s = eloop_ctx; 1417 1418 if (!wpa_s->p2p_send_action_work) 1419 return; 1420 1421 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1422 wpas_p2p_free_send_action_work(wpa_s); 1423} 1424 1425 1426static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1427{ 1428 if (wpa_s->p2p_send_action_work) { 1429 struct send_action_work *awork; 1430 1431 awork = wpa_s->p2p_send_action_work->ctx; 1432 wpa_printf(MSG_DEBUG, 1433 "P2P: Clear Action TX work @%p (wait_time=%u)", 1434 wpa_s->p2p_send_action_work, awork->wait_time); 1435 if (awork->wait_time == 0) { 1436 wpas_p2p_free_send_action_work(wpa_s); 1437 } else { 1438 /* 1439 * In theory, this should not be needed, but number of 1440 * places in the P2P code is still using non-zero wait 1441 * time for the last Action frame in the sequence and 1442 * some of these do not call send_action_done(). 1443 */ 1444 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1445 wpa_s, NULL); 1446 eloop_register_timeout( 1447 0, awork->wait_time * 1000, 1448 wpas_p2p_send_action_work_timeout, 1449 wpa_s, NULL); 1450 } 1451 } 1452} 1453 1454 1455static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1456 unsigned int freq, 1457 const u8 *dst, const u8 *src, 1458 const u8 *bssid, 1459 const u8 *data, size_t data_len, 1460 enum offchannel_send_action_result 1461 result) 1462{ 1463 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1464 1465 wpas_p2p_action_tx_clear(wpa_s); 1466 1467 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1468 return; 1469 1470 switch (result) { 1471 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1472 res = P2P_SEND_ACTION_SUCCESS; 1473 break; 1474 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1475 res = P2P_SEND_ACTION_NO_ACK; 1476 break; 1477 case OFFCHANNEL_SEND_ACTION_FAILED: 1478 res = P2P_SEND_ACTION_FAILED; 1479 break; 1480 } 1481 1482 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1483 1484 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1485 wpa_s->pending_pd_before_join && 1486 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1487 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1488 wpa_s->p2p_fallback_to_go_neg) { 1489 wpa_s->pending_pd_before_join = 0; 1490 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1491 "during p2p_connect-auto"); 1492 wpa_msg_global(wpa_s->parent, MSG_INFO, 1493 P2P_EVENT_FALLBACK_TO_GO_NEG 1494 "reason=no-ACK-to-PD-Req"); 1495 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1496 return; 1497 } 1498} 1499 1500 1501static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1502{ 1503 struct wpa_supplicant *wpa_s = work->wpa_s; 1504 struct send_action_work *awork = work->ctx; 1505 1506 if (deinit) { 1507 if (work->started) { 1508 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1509 wpa_s, NULL); 1510 wpa_s->p2p_send_action_work = NULL; 1511 offchannel_send_action_done(wpa_s); 1512 } 1513 os_free(awork); 1514 return; 1515 } 1516 1517 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1518 awork->bssid, awork->buf, awork->len, 1519 awork->wait_time, 1520 wpas_p2p_send_action_tx_status, 1) < 0) { 1521 os_free(awork); 1522 radio_work_done(work); 1523 return; 1524 } 1525 wpa_s->p2p_send_action_work = work; 1526} 1527 1528 1529static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1530 unsigned int freq, const u8 *dst, 1531 const u8 *src, const u8 *bssid, const u8 *buf, 1532 size_t len, unsigned int wait_time) 1533{ 1534 struct send_action_work *awork; 1535 1536 if (wpa_s->p2p_send_action_work) { 1537 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1538 return -1; 1539 } 1540 1541 awork = os_zalloc(sizeof(*awork) + len); 1542 if (awork == NULL) 1543 return -1; 1544 1545 awork->freq = freq; 1546 os_memcpy(awork->dst, dst, ETH_ALEN); 1547 os_memcpy(awork->src, src, ETH_ALEN); 1548 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1549 awork->len = len; 1550 awork->wait_time = wait_time; 1551 os_memcpy(awork->buf, buf, len); 1552 1553 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1554 wpas_send_action_cb, awork) < 0) { 1555 os_free(awork); 1556 return -1; 1557 } 1558 1559 return 0; 1560} 1561 1562 1563static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1564 const u8 *src, const u8 *bssid, const u8 *buf, 1565 size_t len, unsigned int wait_time) 1566{ 1567 struct wpa_supplicant *wpa_s = ctx; 1568 int listen_freq = -1, send_freq = -1; 1569 1570 if (wpa_s->p2p_listen_work) 1571 listen_freq = wpa_s->p2p_listen_work->freq; 1572 if (wpa_s->p2p_send_action_work) 1573 send_freq = wpa_s->p2p_send_action_work->freq; 1574 if (listen_freq != (int) freq && send_freq != (int) freq) { 1575 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1576 listen_freq, send_freq); 1577 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1578 len, wait_time); 1579 } 1580 1581 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1582 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1583 wait_time, 1584 wpas_p2p_send_action_tx_status, 1); 1585} 1586 1587 1588static void wpas_send_action_done(void *ctx) 1589{ 1590 struct wpa_supplicant *wpa_s = ctx; 1591 1592 if (wpa_s->p2p_send_action_work) { 1593 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1594 wpa_s, NULL); 1595 os_free(wpa_s->p2p_send_action_work->ctx); 1596 radio_work_done(wpa_s->p2p_send_action_work); 1597 wpa_s->p2p_send_action_work = NULL; 1598 } 1599 1600 offchannel_send_action_done(wpa_s); 1601} 1602 1603 1604static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1605 struct p2p_go_neg_results *params) 1606{ 1607 if (wpa_s->go_params == NULL) { 1608 wpa_s->go_params = os_malloc(sizeof(*params)); 1609 if (wpa_s->go_params == NULL) 1610 return -1; 1611 } 1612 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1613 return 0; 1614} 1615 1616 1617static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1618 struct p2p_go_neg_results *res) 1619{ 1620 wpa_s->group_formation_reported = 0; 1621 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1622 " dev_addr " MACSTR " wps_method %d", 1623 MAC2STR(res->peer_interface_addr), 1624 MAC2STR(res->peer_device_addr), res->wps_method); 1625 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1626 res->ssid, res->ssid_len); 1627 wpa_supplicant_ap_deinit(wpa_s); 1628 wpas_copy_go_neg_results(wpa_s, res); 1629 if (res->wps_method == WPS_PBC) { 1630 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1631#ifdef CONFIG_WPS_NFC 1632 } else if (res->wps_method == WPS_NFC) { 1633 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1634 res->peer_interface_addr, 1635 wpa_s->parent->p2p_oob_dev_pw, 1636 wpa_s->parent->p2p_oob_dev_pw_id, 1, 1637 wpa_s->parent->p2p_oob_dev_pw_id == 1638 DEV_PW_NFC_CONNECTION_HANDOVER ? 1639 wpa_s->parent->p2p_peer_oob_pubkey_hash : 1640 NULL, 1641 NULL, 0, 0); 1642#endif /* CONFIG_WPS_NFC */ 1643 } else { 1644 u16 dev_pw_id = DEV_PW_DEFAULT; 1645 if (wpa_s->p2p_wps_method == WPS_P2PS) 1646 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1647 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1648 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1649 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1650 wpa_s->p2p_pin, 1, dev_pw_id); 1651 } 1652} 1653 1654 1655static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1656 struct wpa_ssid *ssid) 1657{ 1658 struct wpa_ssid *persistent; 1659 struct psk_list_entry *psk; 1660 struct hostapd_data *hapd; 1661 1662 if (!wpa_s->ap_iface) 1663 return; 1664 1665 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 1666 ssid->ssid_len); 1667 if (persistent == NULL) 1668 return; 1669 1670 hapd = wpa_s->ap_iface->bss[0]; 1671 1672 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1673 list) { 1674 struct hostapd_wpa_psk *hpsk; 1675 1676 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1677 MACSTR " psk=%d", 1678 MAC2STR(psk->addr), psk->p2p); 1679 hpsk = os_zalloc(sizeof(*hpsk)); 1680 if (hpsk == NULL) 1681 break; 1682 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1683 if (psk->p2p) 1684 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1685 else 1686 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1687 hpsk->next = hapd->conf->ssid.wpa_psk; 1688 hapd->conf->ssid.wpa_psk = hpsk; 1689 } 1690} 1691 1692 1693static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1694{ 1695 unsigned int i; 1696 1697 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):", 1698 wpa_s->p2p_group_common_freqs_num); 1699 1700 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) 1701 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d", 1702 i, wpa_s->p2p_group_common_freqs[i]); 1703} 1704 1705 1706static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1707 struct p2p_go_neg_results *params) 1708{ 1709 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1710 1711 wpa_s->p2p_group_common_freqs_num = 0; 1712 os_free(wpa_s->p2p_group_common_freqs); 1713 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1714 if (!wpa_s->p2p_group_common_freqs) 1715 return; 1716 1717 for (i = 0; i < len; i++) { 1718 if (!wpa_s->go_params->freq_list[i]) 1719 break; 1720 wpa_s->p2p_group_common_freqs[i] = 1721 wpa_s->go_params->freq_list[i]; 1722 } 1723 wpa_s->p2p_group_common_freqs_num = i; 1724} 1725 1726 1727static void p2p_config_write(struct wpa_supplicant *wpa_s) 1728{ 1729#ifndef CONFIG_NO_CONFIG_WRITE 1730 if (wpa_s->parent->conf->update_config && 1731 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 1732 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1733#endif /* CONFIG_NO_CONFIG_WRITE */ 1734} 1735 1736 1737static void p2p_go_configured(void *ctx, void *data) 1738{ 1739 struct wpa_supplicant *wpa_s = ctx; 1740 struct p2p_go_neg_results *params = data; 1741 struct wpa_ssid *ssid; 1742 int network_id = -1; 1743 1744 wpa_s->ap_configured_cb = NULL; 1745 wpa_s->ap_configured_cb_ctx = NULL; 1746 wpa_s->ap_configured_cb_data = NULL; 1747 if (!wpa_s->go_params) { 1748 wpa_printf(MSG_ERROR, 1749 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL"); 1750 return; 1751 } 1752 1753 p2p_go_save_group_common_freqs(wpa_s, params); 1754 p2p_go_dump_common_freqs(wpa_s); 1755 1756 ssid = wpa_s->current_ssid; 1757 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1758 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1759 if (wpa_s->global->p2p_group_formation == wpa_s) 1760 wpa_s->global->p2p_group_formation = NULL; 1761 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1762 params->passphrase[0] == '\0' ? 1763 params->psk : NULL, 1764 params->passphrase, 1765 wpa_s->global->p2p_dev_addr, 1766 params->persistent_group, ""); 1767 wpa_s->group_formation_reported = 1; 1768 1769 if (wpa_s->parent->p2ps_method_config_any) { 1770 if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) { 1771 wpa_dbg(wpa_s, MSG_DEBUG, 1772 "P2PS: Setting default PIN for ANY"); 1773 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1774 "12345670", NULL, 0, 1775 0); 1776 } else { 1777 wpa_dbg(wpa_s, MSG_DEBUG, 1778 "P2PS: Setting default PIN for " MACSTR, 1779 MAC2STR(wpa_s->parent->p2ps_join_addr)); 1780 wpa_supplicant_ap_wps_pin( 1781 wpa_s, wpa_s->parent->p2ps_join_addr, 1782 "12345670", NULL, 0, 0); 1783 } 1784 wpa_s->parent->p2ps_method_config_any = 0; 1785 } 1786 1787 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1788 if (params->persistent_group) { 1789 network_id = wpas_p2p_store_persistent_group( 1790 wpa_s->parent, ssid, 1791 wpa_s->global->p2p_dev_addr); 1792 wpas_p2p_add_psk_list(wpa_s, ssid); 1793 } 1794 if (network_id < 0) 1795 network_id = ssid->id; 1796 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1797 wpas_p2p_cross_connect_setup(wpa_s); 1798 wpas_p2p_set_group_idle_timeout(wpa_s); 1799 1800 if (wpa_s->p2p_first_connection_timeout) { 1801 wpa_dbg(wpa_s, MSG_DEBUG, 1802 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1803 wpa_s->p2p_first_connection_timeout); 1804 wpa_s->p2p_go_group_formation_completed = 0; 1805 wpa_s->global->p2p_group_formation = wpa_s; 1806 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1807 wpa_s->parent, NULL); 1808 eloop_register_timeout( 1809 wpa_s->p2p_first_connection_timeout, 0, 1810 wpas_p2p_group_formation_timeout, 1811 wpa_s->parent, NULL); 1812 } 1813 1814 return; 1815 } 1816 1817 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1818 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1819 params->peer_interface_addr)) { 1820 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1821 "filtering"); 1822 return; 1823 } 1824 if (params->wps_method == WPS_PBC) { 1825 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1826 params->peer_device_addr); 1827#ifdef CONFIG_WPS_NFC 1828 } else if (params->wps_method == WPS_NFC) { 1829 if (wpa_s->parent->p2p_oob_dev_pw_id != 1830 DEV_PW_NFC_CONNECTION_HANDOVER && 1831 !wpa_s->parent->p2p_oob_dev_pw) { 1832 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1833 return; 1834 } 1835 wpas_ap_wps_add_nfc_pw( 1836 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 1837 wpa_s->parent->p2p_oob_dev_pw, 1838 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 1839 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 1840#endif /* CONFIG_WPS_NFC */ 1841 } else if (wpa_s->p2p_pin[0]) 1842 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1843 wpa_s->p2p_pin, NULL, 0, 0); 1844 os_free(wpa_s->go_params); 1845 wpa_s->go_params = NULL; 1846} 1847 1848 1849static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1850 struct p2p_go_neg_results *params, 1851 int group_formation) 1852{ 1853 struct wpa_ssid *ssid; 1854 1855 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1856 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1857 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1858 "results"); 1859 return; 1860 } 1861 1862 ssid = wpa_config_add_network(wpa_s->conf); 1863 if (ssid == NULL) { 1864 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1865 return; 1866 } 1867 1868 wpa_s->show_group_started = 0; 1869 wpa_s->p2p_go_group_formation_completed = 0; 1870 wpa_s->group_formation_reported = 0; 1871 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1872 1873 wpa_config_set_network_defaults(ssid); 1874 ssid->temporary = 1; 1875 ssid->p2p_group = 1; 1876 ssid->p2p_persistent_group = params->persistent_group; 1877 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1878 WPAS_MODE_P2P_GO; 1879 ssid->frequency = params->freq; 1880 ssid->ht40 = params->ht40; 1881 ssid->vht = params->vht; 1882 ssid->max_oper_chwidth = params->max_oper_chwidth; 1883 ssid->vht_center_freq2 = params->vht_center_freq2; 1884 ssid->ssid = os_zalloc(params->ssid_len + 1); 1885 if (ssid->ssid) { 1886 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1887 ssid->ssid_len = params->ssid_len; 1888 } 1889 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1890 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1891 ssid->proto = WPA_PROTO_RSN; 1892 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1893 ssid->group_cipher = WPA_CIPHER_CCMP; 1894 if (params->freq > 56160) { 1895 /* 1896 * Enable GCMP instead of CCMP as pairwise_cipher and 1897 * group_cipher in 60 GHz. 1898 */ 1899 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1900 ssid->group_cipher = WPA_CIPHER_GCMP; 1901 } 1902 if (os_strlen(params->passphrase) > 0) { 1903 ssid->passphrase = os_strdup(params->passphrase); 1904 if (ssid->passphrase == NULL) { 1905 wpa_msg_global(wpa_s, MSG_ERROR, 1906 "P2P: Failed to copy passphrase for GO"); 1907 wpa_config_remove_network(wpa_s->conf, ssid->id); 1908 return; 1909 } 1910 } else 1911 ssid->passphrase = NULL; 1912 ssid->psk_set = params->psk_set; 1913 if (ssid->psk_set) 1914 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1915 else if (ssid->passphrase) 1916 wpa_config_update_psk(ssid); 1917 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 1918 1919 wpa_s->ap_configured_cb = p2p_go_configured; 1920 wpa_s->ap_configured_cb_ctx = wpa_s; 1921 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1922 wpa_s->scan_req = NORMAL_SCAN_REQ; 1923 wpa_s->connect_without_scan = ssid; 1924 wpa_s->reassociate = 1; 1925 wpa_s->disconnected = 0; 1926 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1927 "start GO)"); 1928 wpa_supplicant_req_scan(wpa_s, 0, 0); 1929} 1930 1931 1932static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1933 const struct wpa_supplicant *src) 1934{ 1935 struct wpa_config *d; 1936 const struct wpa_config *s; 1937 1938 d = dst->conf; 1939 s = src->conf; 1940 1941#define C(n) if (s->n) d->n = os_strdup(s->n) 1942 C(device_name); 1943 C(manufacturer); 1944 C(model_name); 1945 C(model_number); 1946 C(serial_number); 1947 C(config_methods); 1948#undef C 1949 1950 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1951 os_memcpy(d->sec_device_type, s->sec_device_type, 1952 sizeof(d->sec_device_type)); 1953 d->num_sec_device_types = s->num_sec_device_types; 1954 1955 d->p2p_group_idle = s->p2p_group_idle; 1956 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 1957 d->p2p_intra_bss = s->p2p_intra_bss; 1958 d->persistent_reconnect = s->persistent_reconnect; 1959 d->max_num_sta = s->max_num_sta; 1960 d->pbc_in_m1 = s->pbc_in_m1; 1961 d->ignore_old_scan_res = s->ignore_old_scan_res; 1962 d->beacon_int = s->beacon_int; 1963 d->dtim_period = s->dtim_period; 1964 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 1965 d->disassoc_low_ack = s->disassoc_low_ack; 1966 d->disable_scan_offload = s->disable_scan_offload; 1967 d->passive_scan = s->passive_scan; 1968 1969 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) { 1970 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 1971 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 1972 } 1973 d->p2p_cli_probe = s->p2p_cli_probe; 1974} 1975 1976 1977static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 1978 char *ifname, size_t len) 1979{ 1980 char *ifname_ptr = wpa_s->ifname; 1981 1982 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 1983 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 1984 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 1985 } 1986 1987 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 1988 if (os_strlen(ifname) >= IFNAMSIZ && 1989 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 1990 int res; 1991 1992 /* Try to avoid going over the IFNAMSIZ length limit */ 1993 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 1994 if (os_snprintf_error(len, res) && len) 1995 ifname[len - 1] = '\0'; 1996 } 1997} 1998 1999 2000static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 2001 enum wpa_driver_if_type type) 2002{ 2003 char ifname[120], force_ifname[120]; 2004 2005 if (wpa_s->pending_interface_name[0]) { 2006 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 2007 "- skip creation of a new one"); 2008 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 2009 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 2010 "unknown?! ifname='%s'", 2011 wpa_s->pending_interface_name); 2012 return -1; 2013 } 2014 return 0; 2015 } 2016 2017 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 2018 force_ifname[0] = '\0'; 2019 2020 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 2021 ifname); 2022 wpa_s->p2p_group_idx++; 2023 2024 wpa_s->pending_interface_type = type; 2025 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 2026 wpa_s->pending_interface_addr, NULL) < 0) { 2027 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 2028 "interface"); 2029 return -1; 2030 } 2031 2032 if (force_ifname[0]) { 2033 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 2034 force_ifname); 2035 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 2036 sizeof(wpa_s->pending_interface_name)); 2037 } else 2038 os_strlcpy(wpa_s->pending_interface_name, ifname, 2039 sizeof(wpa_s->pending_interface_name)); 2040 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 2041 MACSTR, wpa_s->pending_interface_name, 2042 MAC2STR(wpa_s->pending_interface_addr)); 2043 2044 return 0; 2045} 2046 2047 2048static void wpas_p2p_remove_pending_group_interface( 2049 struct wpa_supplicant *wpa_s) 2050{ 2051 if (!wpa_s->pending_interface_name[0] || 2052 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2053 return; /* No pending virtual interface */ 2054 2055 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2056 wpa_s->pending_interface_name); 2057 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2058 wpa_s->pending_interface_name); 2059 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2060 wpa_s->pending_interface_name[0] = '\0'; 2061 wpa_s->global->pending_group_iface_for_p2ps = 0; 2062} 2063 2064 2065static struct wpa_supplicant * 2066wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2067{ 2068 struct wpa_interface iface; 2069 struct wpa_supplicant *group_wpa_s; 2070 2071 if (!wpa_s->pending_interface_name[0]) { 2072 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2073 if (!wpas_p2p_create_iface(wpa_s)) 2074 return NULL; 2075 /* 2076 * Something has forced us to remove the pending interface; try 2077 * to create a new one and hope for the best that we will get 2078 * the same local address. 2079 */ 2080 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2081 WPA_IF_P2P_CLIENT) < 0) 2082 return NULL; 2083 } 2084 2085 os_memset(&iface, 0, sizeof(iface)); 2086 iface.ifname = wpa_s->pending_interface_name; 2087 iface.driver = wpa_s->driver->name; 2088 if (wpa_s->conf->ctrl_interface == NULL && 2089 wpa_s->parent != wpa_s && 2090 wpa_s->p2p_mgmt && 2091 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2092 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2093 else 2094 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2095 iface.driver_param = wpa_s->conf->driver_param; 2096 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2097 if (group_wpa_s == NULL) { 2098 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2099 "wpa_supplicant interface"); 2100 return NULL; 2101 } 2102 wpa_s->pending_interface_name[0] = '\0'; 2103 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2104 P2P_GROUP_INTERFACE_CLIENT; 2105 wpa_s->global->p2p_group_formation = group_wpa_s; 2106 wpa_s->global->pending_group_iface_for_p2ps = 0; 2107 2108 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2109 2110 return group_wpa_s; 2111} 2112 2113 2114static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2115 void *timeout_ctx) 2116{ 2117 struct wpa_supplicant *wpa_s = eloop_ctx; 2118 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2119 wpas_p2p_group_formation_failed(wpa_s, 0); 2120} 2121 2122 2123static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2124 int already_deleted) 2125{ 2126 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2127 wpa_s->parent, NULL); 2128 if (wpa_s->global->p2p) 2129 p2p_group_formation_failed(wpa_s->global->p2p); 2130 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2131} 2132 2133 2134static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2135{ 2136 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2137 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2138 wpa_s->parent, NULL); 2139 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2140 wpa_s->parent, NULL); 2141 wpa_s->global->p2p_fail_on_wps_complete = 0; 2142} 2143 2144 2145void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2146{ 2147 if (wpa_s->global->p2p_group_formation != wpa_s) 2148 return; 2149 /* Speed up group formation timeout since this cannot succeed */ 2150 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2151 wpa_s->parent, NULL); 2152 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2153 wpa_s->parent, NULL); 2154} 2155 2156 2157static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2158{ 2159 struct wpa_supplicant *wpa_s = ctx; 2160 2161 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2162 wpa_drv_cancel_remain_on_channel(wpa_s); 2163 wpa_s->off_channel_freq = 0; 2164 wpa_s->roc_waiting_drv_freq = 0; 2165 } 2166 2167 if (res->status) { 2168 wpa_msg_global(wpa_s, MSG_INFO, 2169 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2170 res->status); 2171 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2172 wpas_p2p_remove_pending_group_interface(wpa_s); 2173 return; 2174 } 2175 2176 if (!res->role_go) { 2177 /* Inform driver of the operating channel of GO. */ 2178 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2179 } 2180 2181 if (wpa_s->p2p_go_ht40) 2182 res->ht40 = 1; 2183 if (wpa_s->p2p_go_vht) 2184 res->vht = 1; 2185 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2186 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2187 2188 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2189 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2190 " wps_method=%s", 2191 res->role_go ? "GO" : "client", res->freq, res->ht40, 2192 MAC2STR(res->peer_device_addr), 2193 MAC2STR(res->peer_interface_addr), 2194 p2p_wps_method_text(res->wps_method)); 2195 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2196 2197 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2198 struct wpa_ssid *ssid; 2199 ssid = wpa_config_get_network(wpa_s->conf, 2200 wpa_s->p2p_persistent_id); 2201 if (ssid && ssid->disabled == 2 && 2202 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2203 size_t len = os_strlen(ssid->passphrase); 2204 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2205 "on requested persistent group"); 2206 os_memcpy(res->passphrase, ssid->passphrase, len); 2207 res->passphrase[len] = '\0'; 2208 } 2209 } 2210 2211 if (wpa_s->create_p2p_iface) { 2212 struct wpa_supplicant *group_wpa_s = 2213 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2214 if (group_wpa_s == NULL) { 2215 wpas_p2p_remove_pending_group_interface(wpa_s); 2216 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2217 wpa_s, NULL); 2218 wpas_p2p_group_formation_failed(wpa_s, 1); 2219 return; 2220 } 2221 if (group_wpa_s != wpa_s) { 2222 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2223 sizeof(group_wpa_s->p2p_pin)); 2224 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2225 } 2226 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2227 wpa_s->pending_interface_name[0] = '\0'; 2228 group_wpa_s->p2p_in_provisioning = 1; 2229 2230 if (res->role_go) { 2231 wpas_start_wps_go(group_wpa_s, res, 1); 2232 } else { 2233 os_get_reltime(&group_wpa_s->scan_min_time); 2234 wpas_start_wps_enrollee(group_wpa_s, res); 2235 } 2236 } else { 2237 wpa_s->p2p_in_provisioning = 1; 2238 wpa_s->global->p2p_group_formation = wpa_s; 2239 2240 if (res->role_go) { 2241 wpas_start_wps_go(wpa_s, res, 1); 2242 } else { 2243 os_get_reltime(&wpa_s->scan_min_time); 2244 wpas_start_wps_enrollee(ctx, res); 2245 } 2246 } 2247 2248 wpa_s->p2p_long_listen = 0; 2249 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2250 2251 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2252 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2253 (res->peer_config_timeout % 100) * 10000, 2254 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2255} 2256 2257 2258static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2259 u8 go_intent) 2260{ 2261 struct wpa_supplicant *wpa_s = ctx; 2262 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2263 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2264 dev_passwd_id, go_intent); 2265 2266 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2267} 2268 2269 2270static void wpas_dev_found(void *ctx, const u8 *addr, 2271 const struct p2p_peer_info *info, 2272 int new_device) 2273{ 2274#ifndef CONFIG_NO_STDOUT_DEBUG 2275 struct wpa_supplicant *wpa_s = ctx; 2276 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2277 char *wfd_dev_info_hex = NULL; 2278 2279#ifdef CONFIG_WIFI_DISPLAY 2280 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2281 WFD_SUBELEM_DEVICE_INFO); 2282#endif /* CONFIG_WIFI_DISPLAY */ 2283 2284 if (info->p2ps_instance) { 2285 char str[256]; 2286 const u8 *buf = wpabuf_head(info->p2ps_instance); 2287 size_t len = wpabuf_len(info->p2ps_instance); 2288 2289 while (len) { 2290 u32 id; 2291 u16 methods; 2292 u8 str_len; 2293 2294 if (len < 4 + 2 + 1) 2295 break; 2296 id = WPA_GET_LE32(buf); 2297 buf += sizeof(u32); 2298 methods = WPA_GET_BE16(buf); 2299 buf += sizeof(u16); 2300 str_len = *buf++; 2301 if (str_len > len - 4 - 2 - 1) 2302 break; 2303 os_memcpy(str, buf, str_len); 2304 str[str_len] = '\0'; 2305 buf += str_len; 2306 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2307 2308 wpa_msg_global(wpa_s, MSG_INFO, 2309 P2P_EVENT_DEVICE_FOUND MACSTR 2310 " p2p_dev_addr=" MACSTR 2311 " pri_dev_type=%s name='%s'" 2312 " config_methods=0x%x" 2313 " dev_capab=0x%x" 2314 " group_capab=0x%x" 2315 " adv_id=%x asp_svc=%s%s", 2316 MAC2STR(addr), 2317 MAC2STR(info->p2p_device_addr), 2318 wps_dev_type_bin2str( 2319 info->pri_dev_type, 2320 devtype, sizeof(devtype)), 2321 info->device_name, methods, 2322 info->dev_capab, info->group_capab, 2323 id, str, 2324 info->vendor_elems ? 2325 " vendor_elems=1" : ""); 2326 } 2327 goto done; 2328 } 2329 2330 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2331 " p2p_dev_addr=" MACSTR 2332 " pri_dev_type=%s name='%s' config_methods=0x%x " 2333 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2334 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2335 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2336 sizeof(devtype)), 2337 info->device_name, info->config_methods, 2338 info->dev_capab, info->group_capab, 2339 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2340 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2341 info->vendor_elems ? " vendor_elems=1" : "", 2342 new_device); 2343 2344done: 2345 os_free(wfd_dev_info_hex); 2346#endif /* CONFIG_NO_STDOUT_DEBUG */ 2347 2348 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2349} 2350 2351 2352static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2353{ 2354 struct wpa_supplicant *wpa_s = ctx; 2355 2356 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2357 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2358 2359 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2360} 2361 2362 2363static void wpas_find_stopped(void *ctx) 2364{ 2365 struct wpa_supplicant *wpa_s = ctx; 2366 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2367 wpas_notify_p2p_find_stopped(wpa_s); 2368} 2369 2370 2371struct wpas_p2p_listen_work { 2372 unsigned int freq; 2373 unsigned int duration; 2374 struct wpabuf *probe_resp_ie; 2375}; 2376 2377 2378static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2379{ 2380 if (lwork == NULL) 2381 return; 2382 wpabuf_free(lwork->probe_resp_ie); 2383 os_free(lwork); 2384} 2385 2386 2387static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2388{ 2389 struct wpas_p2p_listen_work *lwork; 2390 2391 if (!wpa_s->p2p_listen_work) 2392 return; 2393 2394 lwork = wpa_s->p2p_listen_work->ctx; 2395 wpas_p2p_listen_work_free(lwork); 2396 radio_work_done(wpa_s->p2p_listen_work); 2397 wpa_s->p2p_listen_work = NULL; 2398} 2399 2400 2401static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2402{ 2403 struct wpa_supplicant *wpa_s = work->wpa_s; 2404 struct wpas_p2p_listen_work *lwork = work->ctx; 2405 unsigned int duration; 2406 2407 if (deinit) { 2408 if (work->started) { 2409 wpa_s->p2p_listen_work = NULL; 2410 wpas_stop_listen(wpa_s); 2411 } 2412 wpas_p2p_listen_work_free(lwork); 2413 return; 2414 } 2415 2416 wpa_s->p2p_listen_work = work; 2417 2418 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2419 2420 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2421 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2422 "report received Probe Request frames"); 2423 wpas_p2p_listen_work_done(wpa_s); 2424 return; 2425 } 2426 2427 wpa_s->pending_listen_freq = lwork->freq; 2428 wpa_s->pending_listen_duration = lwork->duration; 2429 2430 duration = lwork->duration; 2431#ifdef CONFIG_TESTING_OPTIONS 2432 if (wpa_s->extra_roc_dur) { 2433 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2434 duration, duration + wpa_s->extra_roc_dur); 2435 duration += wpa_s->extra_roc_dur; 2436 } 2437#endif /* CONFIG_TESTING_OPTIONS */ 2438 2439 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2440 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2441 "to remain on channel (%u MHz) for Listen " 2442 "state", lwork->freq); 2443 wpas_p2p_listen_work_done(wpa_s); 2444 wpa_s->pending_listen_freq = 0; 2445 return; 2446 } 2447 wpa_s->off_channel_freq = 0; 2448 wpa_s->roc_waiting_drv_freq = lwork->freq; 2449} 2450 2451 2452static int wpas_start_listen(void *ctx, unsigned int freq, 2453 unsigned int duration, 2454 const struct wpabuf *probe_resp_ie) 2455{ 2456 struct wpa_supplicant *wpa_s = ctx; 2457 struct wpas_p2p_listen_work *lwork; 2458 2459 if (wpa_s->p2p_listen_work) { 2460 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2461 return -1; 2462 } 2463 2464 lwork = os_zalloc(sizeof(*lwork)); 2465 if (lwork == NULL) 2466 return -1; 2467 lwork->freq = freq; 2468 lwork->duration = duration; 2469 if (probe_resp_ie) { 2470 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2471 if (lwork->probe_resp_ie == NULL) { 2472 wpas_p2p_listen_work_free(lwork); 2473 return -1; 2474 } 2475 } 2476 2477 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2478 lwork) < 0) { 2479 wpas_p2p_listen_work_free(lwork); 2480 return -1; 2481 } 2482 2483 return 0; 2484} 2485 2486 2487static void wpas_stop_listen(void *ctx) 2488{ 2489 struct wpa_supplicant *wpa_s = ctx; 2490 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2491 wpa_drv_cancel_remain_on_channel(wpa_s); 2492 wpa_s->off_channel_freq = 0; 2493 wpa_s->roc_waiting_drv_freq = 0; 2494 } 2495 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2496 2497 /* 2498 * Don't cancel Probe Request RX reporting for a connected P2P Client 2499 * handling Probe Request frames. 2500 */ 2501 if (!wpa_s->p2p_cli_probe) 2502 wpa_drv_probe_req_report(wpa_s, 0); 2503 2504 wpas_p2p_listen_work_done(wpa_s); 2505} 2506 2507 2508static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2509 unsigned int freq) 2510{ 2511 struct wpa_supplicant *wpa_s = ctx; 2512 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2513 freq); 2514} 2515 2516 2517static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2518 const u8 *peer, const char *params, 2519 unsigned int generated_pin) 2520{ 2521 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2522 " %08d%s", MAC2STR(peer), generated_pin, params); 2523} 2524 2525 2526static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2527 const u8 *peer, const char *params) 2528{ 2529 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2530 "%s", MAC2STR(peer), params); 2531} 2532 2533 2534static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2535 const u8 *dev_addr, const u8 *pri_dev_type, 2536 const char *dev_name, u16 supp_config_methods, 2537 u8 dev_capab, u8 group_capab, const u8 *group_id, 2538 size_t group_id_len) 2539{ 2540 struct wpa_supplicant *wpa_s = ctx; 2541 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2542 char params[300]; 2543 u8 empty_dev_type[8]; 2544 unsigned int generated_pin = 0; 2545 struct wpa_supplicant *group = NULL; 2546 int res; 2547 2548 if (group_id) { 2549 for (group = wpa_s->global->ifaces; group; group = group->next) 2550 { 2551 struct wpa_ssid *s = group->current_ssid; 2552 if (s != NULL && 2553 s->mode == WPAS_MODE_P2P_GO && 2554 group_id_len - ETH_ALEN == s->ssid_len && 2555 os_memcmp(group_id + ETH_ALEN, s->ssid, 2556 s->ssid_len) == 0) 2557 break; 2558 } 2559 } 2560 2561 if (pri_dev_type == NULL) { 2562 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2563 pri_dev_type = empty_dev_type; 2564 } 2565 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2566 " pri_dev_type=%s name='%s' config_methods=0x%x " 2567 "dev_capab=0x%x group_capab=0x%x%s%s", 2568 MAC2STR(dev_addr), 2569 wps_dev_type_bin2str(pri_dev_type, devtype, 2570 sizeof(devtype)), 2571 dev_name, supp_config_methods, dev_capab, group_capab, 2572 group ? " group=" : "", 2573 group ? group->ifname : ""); 2574 if (os_snprintf_error(sizeof(params), res)) 2575 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2576 params[sizeof(params) - 1] = '\0'; 2577 2578 if (config_methods & WPS_CONFIG_DISPLAY) { 2579 generated_pin = wps_generate_pin(); 2580 wpas_prov_disc_local_display(wpa_s, peer, params, 2581 generated_pin); 2582 } else if (config_methods & WPS_CONFIG_KEYPAD) 2583 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2584 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2585 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2586 MACSTR "%s", MAC2STR(peer), params); 2587 2588 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2589 P2P_PROV_DISC_SUCCESS, 2590 config_methods, generated_pin); 2591} 2592 2593 2594static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2595{ 2596 struct wpa_supplicant *wpa_s = ctx; 2597 unsigned int generated_pin = 0; 2598 char params[20]; 2599 2600 if (wpa_s->pending_pd_before_join && 2601 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2602 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2603 wpa_s->pending_pd_before_join = 0; 2604 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2605 "join-existing-group operation"); 2606 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2607 return; 2608 } 2609 2610 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2611 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2612 int res; 2613 2614 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2615 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2616 if (os_snprintf_error(sizeof(params), res)) 2617 params[sizeof(params) - 1] = '\0'; 2618 } else 2619 params[0] = '\0'; 2620 2621 if (config_methods & WPS_CONFIG_DISPLAY) 2622 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2623 else if (config_methods & WPS_CONFIG_KEYPAD) { 2624 generated_pin = wps_generate_pin(); 2625 wpas_prov_disc_local_display(wpa_s, peer, params, 2626 generated_pin); 2627 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2628 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2629 MACSTR "%s", MAC2STR(peer), params); 2630 2631 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2632 P2P_PROV_DISC_SUCCESS, 2633 config_methods, generated_pin); 2634} 2635 2636 2637static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2638 enum p2p_prov_disc_status status, 2639 u32 adv_id, const u8 *adv_mac, 2640 const char *deferred_session_resp) 2641{ 2642 struct wpa_supplicant *wpa_s = ctx; 2643 2644 if (wpa_s->p2p_fallback_to_go_neg) { 2645 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2646 "failed - fall back to GO Negotiation"); 2647 wpa_msg_global(wpa_s->parent, MSG_INFO, 2648 P2P_EVENT_FALLBACK_TO_GO_NEG 2649 "reason=PD-failed"); 2650 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2651 return; 2652 } 2653 2654 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2655 wpa_s->pending_pd_before_join = 0; 2656 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2657 "join-existing-group operation (no ACK for PD " 2658 "Req attempts)"); 2659 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2660 return; 2661 } 2662 2663 if (adv_id && adv_mac && deferred_session_resp) { 2664 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2665 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2666 " deferred_session_resp='%s'", 2667 MAC2STR(peer), status, adv_id, 2668 deferred_session_resp); 2669 } else if (adv_id && adv_mac) { 2670 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2671 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2672 MAC2STR(peer), status, adv_id); 2673 } else { 2674 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2675 " p2p_dev_addr=" MACSTR " status=%d", 2676 MAC2STR(peer), status); 2677 } 2678 2679 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2680 status, 0, 0); 2681} 2682 2683 2684static int freq_included(struct wpa_supplicant *wpa_s, 2685 const struct p2p_channels *channels, 2686 unsigned int freq) 2687{ 2688 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2689 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2690 return 1; 2691 return 0; 2692} 2693 2694 2695static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2696{ 2697 unsigned int num = P2P_MAX_CHANNELS; 2698 int *common_freqs; 2699 int ret; 2700 2701 p2p_go_dump_common_freqs(wpa_s); 2702 common_freqs = os_calloc(num, sizeof(int)); 2703 if (!common_freqs) 2704 return; 2705 2706 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2707 if (ret < 0) { 2708 wpa_dbg(wpa_s, MSG_DEBUG, 2709 "P2P: Failed to get group common freqs"); 2710 os_free(common_freqs); 2711 return; 2712 } 2713 2714 os_free(wpa_s->p2p_group_common_freqs); 2715 wpa_s->p2p_group_common_freqs = common_freqs; 2716 wpa_s->p2p_group_common_freqs_num = num; 2717 p2p_go_dump_common_freqs(wpa_s); 2718} 2719 2720 2721/* 2722 * Check if the given frequency is one of the possible operating frequencies 2723 * set after the completion of the GO Negotiation. 2724 */ 2725static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2726{ 2727 unsigned int i; 2728 2729 p2p_go_dump_common_freqs(wpa_s); 2730 2731 /* assume no restrictions */ 2732 if (!wpa_s->p2p_group_common_freqs_num) 2733 return 1; 2734 2735 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2736 if (wpa_s->p2p_group_common_freqs[i] == freq) 2737 return 1; 2738 } 2739 return 0; 2740} 2741 2742 2743static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2744 struct sta_info *sta, void *ctx) 2745{ 2746 int *ecsa_support = ctx; 2747 2748 *ecsa_support &= sta->ecsa_supported; 2749 2750 return 0; 2751} 2752 2753 2754/* Check if all the peers support eCSA */ 2755static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2756{ 2757 int ecsa_support = 1; 2758 2759 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2760 &ecsa_support); 2761 2762 return ecsa_support; 2763} 2764 2765 2766/** 2767 * Pick the best frequency to use from all the currently used frequencies. 2768 */ 2769static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2770 struct wpa_used_freq_data *freqs, 2771 unsigned int num) 2772{ 2773 unsigned int i, c; 2774 2775 /* find a candidate freq that is supported by P2P */ 2776 for (c = 0; c < num; c++) 2777 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2778 break; 2779 2780 if (c == num) 2781 return 0; 2782 2783 /* once we have a candidate, try to find a 'better' one */ 2784 for (i = c + 1; i < num; i++) { 2785 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2786 continue; 2787 2788 /* 2789 * 1. Infrastructure station interfaces have higher preference. 2790 * 2. P2P Clients have higher preference. 2791 * 3. All others. 2792 */ 2793 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2794 c = i; 2795 break; 2796 } 2797 2798 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2799 c = i; 2800 } 2801 return freqs[c].freq; 2802} 2803 2804 2805static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2806 const u8 *go_dev_addr, const u8 *ssid, 2807 size_t ssid_len, int *go, u8 *group_bssid, 2808 int *force_freq, int persistent_group, 2809 const struct p2p_channels *channels, 2810 int dev_pw_id) 2811{ 2812 struct wpa_supplicant *wpa_s = ctx; 2813 struct wpa_ssid *s; 2814 struct wpa_used_freq_data *freqs; 2815 struct wpa_supplicant *grp; 2816 int best_freq; 2817 2818 if (!persistent_group) { 2819 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2820 " to join an active group (SSID: %s)", 2821 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2822 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2823 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2824 == 0 || 2825 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2826 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2827 "authorized invitation"); 2828 goto accept_inv; 2829 } 2830 2831#ifdef CONFIG_WPS_NFC 2832 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2833 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2834 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2835 wpa_s->p2p_wps_method = WPS_NFC; 2836 wpa_s->pending_join_wps_method = WPS_NFC; 2837 os_memcpy(wpa_s->pending_join_dev_addr, 2838 go_dev_addr, ETH_ALEN); 2839 os_memcpy(wpa_s->pending_join_iface_addr, 2840 bssid, ETH_ALEN); 2841 goto accept_inv; 2842 } 2843#endif /* CONFIG_WPS_NFC */ 2844 2845 /* 2846 * Do not accept the invitation automatically; notify user and 2847 * request approval. 2848 */ 2849 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2850 } 2851 2852 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2853 if (grp) { 2854 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2855 "running persistent group"); 2856 if (*go) 2857 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2858 goto accept_inv; 2859 } 2860 2861 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2862 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2863 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2864 "invitation to re-invoke a persistent group"); 2865 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2866 } else if (!wpa_s->conf->persistent_reconnect) 2867 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2868 2869 for (s = wpa_s->conf->ssid; s; s = s->next) { 2870 if (s->disabled == 2 && 2871 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2872 s->ssid_len == ssid_len && 2873 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2874 break; 2875 } 2876 2877 if (!s) { 2878 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2879 " requested reinvocation of an unknown group", 2880 MAC2STR(sa)); 2881 return P2P_SC_FAIL_UNKNOWN_GROUP; 2882 } 2883 2884 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2885 *go = 1; 2886 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2887 wpa_printf(MSG_DEBUG, "P2P: The only available " 2888 "interface is already in use - reject " 2889 "invitation"); 2890 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2891 } 2892 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2893 } else if (s->mode == WPAS_MODE_P2P_GO) { 2894 *go = 1; 2895 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2896 { 2897 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2898 "interface address for the group"); 2899 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2900 } 2901 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2902 ETH_ALEN); 2903 } 2904 2905accept_inv: 2906 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2907 2908 best_freq = 0; 2909 freqs = os_calloc(wpa_s->num_multichan_concurrent, 2910 sizeof(struct wpa_used_freq_data)); 2911 if (freqs) { 2912 int num_channels = wpa_s->num_multichan_concurrent; 2913 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 2914 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 2915 os_free(freqs); 2916 } 2917 2918 /* Get one of the frequencies currently in use */ 2919 if (best_freq > 0) { 2920 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 2921 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 2922 2923 if (wpa_s->num_multichan_concurrent < 2 || 2924 wpas_p2p_num_unused_channels(wpa_s) < 1) { 2925 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 2926 *force_freq = best_freq; 2927 } 2928 } 2929 2930 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 2931 wpas_p2p_num_unused_channels(wpa_s) > 0) { 2932 if (*go == 0) { 2933 /* We are the client */ 2934 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 2935 "running a GO but we are capable of MCC, " 2936 "figure out the best channel to use"); 2937 *force_freq = 0; 2938 } else if (!freq_included(wpa_s, channels, *force_freq)) { 2939 /* We are the GO, and *force_freq is not in the 2940 * intersection */ 2941 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 2942 "in intersection but we are capable of MCC, " 2943 "figure out the best channel to use", 2944 *force_freq); 2945 *force_freq = 0; 2946 } 2947 } 2948 2949 return P2P_SC_SUCCESS; 2950} 2951 2952 2953static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2954 const u8 *ssid, size_t ssid_len, 2955 const u8 *go_dev_addr, u8 status, 2956 int op_freq) 2957{ 2958 struct wpa_supplicant *wpa_s = ctx; 2959 struct wpa_ssid *s; 2960 2961 for (s = wpa_s->conf->ssid; s; s = s->next) { 2962 if (s->disabled == 2 && 2963 s->ssid_len == ssid_len && 2964 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2965 break; 2966 } 2967 2968 if (status == P2P_SC_SUCCESS) { 2969 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2970 " was accepted; op_freq=%d MHz, SSID=%s", 2971 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 2972 if (s) { 2973 int go = s->mode == WPAS_MODE_P2P_GO; 2974 wpas_p2p_group_add_persistent( 2975 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL, 2976 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 2977 1); 2978 } else if (bssid) { 2979 wpa_s->user_initiated_pd = 0; 2980 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2981 wpa_s->p2p_wps_method, 0, op_freq, 2982 ssid, ssid_len); 2983 } 2984 return; 2985 } 2986 2987 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2988 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2989 " was rejected (status %u)", MAC2STR(sa), status); 2990 return; 2991 } 2992 2993 if (!s) { 2994 if (bssid) { 2995 wpa_msg_global(wpa_s, MSG_INFO, 2996 P2P_EVENT_INVITATION_RECEIVED 2997 "sa=" MACSTR " go_dev_addr=" MACSTR 2998 " bssid=" MACSTR " unknown-network", 2999 MAC2STR(sa), MAC2STR(go_dev_addr), 3000 MAC2STR(bssid)); 3001 } else { 3002 wpa_msg_global(wpa_s, MSG_INFO, 3003 P2P_EVENT_INVITATION_RECEIVED 3004 "sa=" MACSTR " go_dev_addr=" MACSTR 3005 " unknown-network", 3006 MAC2STR(sa), MAC2STR(go_dev_addr)); 3007 } 3008 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3009 bssid, 0, op_freq); 3010 return; 3011 } 3012 3013 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3014 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3015 "sa=" MACSTR " persistent=%d freq=%d", 3016 MAC2STR(sa), s->id, op_freq); 3017 } else { 3018 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3019 "sa=" MACSTR " persistent=%d", 3020 MAC2STR(sa), s->id); 3021 } 3022 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3023 s->id, op_freq); 3024} 3025 3026 3027static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3028 struct wpa_ssid *ssid, 3029 const u8 *peer, int inv) 3030{ 3031 size_t i; 3032 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3033 3034 if (ssid == NULL) 3035 return; 3036 3037 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3038 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3039 ETH_ALEN) == 0) 3040 break; 3041 } 3042 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3043 if (ssid->mode != WPAS_MODE_P2P_GO && 3044 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3045 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3046 "due to invitation result", ssid->id); 3047 wpas_notify_network_removed(wpa_s, ssid); 3048 wpa_config_remove_network(wpa_s->conf, ssid->id); 3049 return; 3050 } 3051 return; /* Peer not found in client list */ 3052 } 3053 3054 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3055 "group %d client list%s", 3056 MAC2STR(peer), ssid->id, 3057 inv ? " due to invitation result" : ""); 3058 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3059 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3060 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3061 ssid->num_p2p_clients--; 3062 if (p2p_wpa_s->conf->update_config && 3063 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3064 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3065} 3066 3067 3068static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3069 const u8 *peer) 3070{ 3071 struct wpa_ssid *ssid; 3072 3073 wpa_s = wpa_s->global->p2p_invite_group; 3074 if (wpa_s == NULL) 3075 return; /* No known invitation group */ 3076 ssid = wpa_s->current_ssid; 3077 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3078 !ssid->p2p_persistent_group) 3079 return; /* Not operating as a GO in persistent group */ 3080 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer, 3081 ssid->ssid, ssid->ssid_len); 3082 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3083} 3084 3085 3086static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3087 const struct p2p_channels *channels, 3088 const u8 *peer, int neg_freq, 3089 int peer_oper_freq) 3090{ 3091 struct wpa_supplicant *wpa_s = ctx; 3092 struct wpa_ssid *ssid; 3093 int freq; 3094 3095 if (bssid) { 3096 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3097 "status=%d " MACSTR, 3098 status, MAC2STR(bssid)); 3099 } else { 3100 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3101 "status=%d ", status); 3102 } 3103 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3104 3105 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3106 status, MAC2STR(peer)); 3107 if (wpa_s->pending_invite_ssid_id == -1) { 3108 struct wpa_supplicant *group_if = 3109 wpa_s->global->p2p_invite_group; 3110 3111 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3112 wpas_remove_persistent_client(wpa_s, peer); 3113 3114 /* 3115 * Invitation to an active group. If this is successful and we 3116 * are the GO, set the client wait to postpone some concurrent 3117 * operations and to allow provisioning and connection to happen 3118 * more quickly. 3119 */ 3120 if (status == P2P_SC_SUCCESS && 3121 group_if && group_if->current_ssid && 3122 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3123 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3124#ifdef CONFIG_TESTING_OPTIONS 3125 if (group_if->p2p_go_csa_on_inv) { 3126 wpa_printf(MSG_DEBUG, 3127 "Testing: force P2P GO CSA after invitation"); 3128 eloop_cancel_timeout( 3129 wpas_p2p_reconsider_moving_go, 3130 wpa_s, NULL); 3131 eloop_register_timeout( 3132 0, 50000, 3133 wpas_p2p_reconsider_moving_go, 3134 wpa_s, NULL); 3135 } 3136#endif /* CONFIG_TESTING_OPTIONS */ 3137 } 3138 return; 3139 } 3140 3141 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3142 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3143 "invitation exchange to indicate readiness for " 3144 "re-invocation"); 3145 } 3146 3147 if (status != P2P_SC_SUCCESS) { 3148 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3149 ssid = wpa_config_get_network( 3150 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3151 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3152 } 3153 wpas_p2p_remove_pending_group_interface(wpa_s); 3154 return; 3155 } 3156 3157 ssid = wpa_config_get_network(wpa_s->conf, 3158 wpa_s->pending_invite_ssid_id); 3159 if (ssid == NULL) { 3160 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3161 "data matching with invitation"); 3162 return; 3163 } 3164 3165 /* 3166 * The peer could have missed our ctrl::ack frame for Invitation 3167 * Response and continue retransmitting the frame. To reduce the 3168 * likelihood of the peer not getting successful TX status for the 3169 * Invitation Response frame, wait a short time here before starting 3170 * the persistent group so that we will remain on the current channel to 3171 * acknowledge any possible retransmission from the peer. 3172 */ 3173 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3174 "starting persistent group"); 3175 os_sleep(0, 50000); 3176 3177 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3178 freq_included(wpa_s, channels, neg_freq)) 3179 freq = neg_freq; 3180 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3181 freq_included(wpa_s, channels, peer_oper_freq)) 3182 freq = peer_oper_freq; 3183 else 3184 freq = 0; 3185 3186 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3187 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3188 wpas_p2p_group_add_persistent(wpa_s, ssid, 3189 ssid->mode == WPAS_MODE_P2P_GO, 3190 wpa_s->p2p_persistent_go_freq, 3191 freq, 3192 wpa_s->p2p_go_vht_center_freq2, 3193 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3194 wpa_s->p2p_go_max_oper_chwidth, 3195 channels, 3196 ssid->mode == WPAS_MODE_P2P_GO ? 3197 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3198 0, 1); 3199} 3200 3201 3202static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3203 unsigned int freq) 3204{ 3205 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3206 return 1; 3207 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3208} 3209 3210 3211static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3212{ 3213 reg->channel[reg->channels] = chan; 3214 reg->channels++; 3215} 3216 3217 3218static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3219 struct p2p_channels *chan, 3220 struct p2p_channels *cli_chan) 3221{ 3222 int i, cla = 0; 3223 3224 wpa_s->global->p2p_24ghz_social_channels = 1; 3225 3226 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3227 3228 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3229 "band"); 3230 3231 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3232 chan->reg_class[cla].reg_class = 81; 3233 chan->reg_class[cla].channels = 0; 3234 for (i = 0; i < 11; i++) { 3235 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3236 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3237 } 3238 if (chan->reg_class[cla].channels) 3239 cla++; 3240 3241 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3242 "band"); 3243 3244 /* Operating class 115 - 5 GHz, channels 36-48 */ 3245 chan->reg_class[cla].reg_class = 115; 3246 chan->reg_class[cla].channels = 0; 3247 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3248 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3249 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3250 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3251 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3252 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3253 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3254 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3255 if (chan->reg_class[cla].channels) 3256 cla++; 3257 3258 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3259 "band"); 3260 3261 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3262 chan->reg_class[cla].reg_class = 124; 3263 chan->reg_class[cla].channels = 0; 3264 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3265 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3266 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3267 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3268 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3269 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3270 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3271 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3272 if (chan->reg_class[cla].channels) 3273 cla++; 3274 3275 chan->reg_classes = cla; 3276 return 0; 3277} 3278 3279 3280static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 3281 u16 num_modes, 3282 enum hostapd_hw_mode mode) 3283{ 3284 u16 i; 3285 3286 for (i = 0; i < num_modes; i++) { 3287 if (modes[i].mode == mode) 3288 return &modes[i]; 3289 } 3290 3291 return NULL; 3292} 3293 3294 3295enum chan_allowed { 3296 NOT_ALLOWED, NO_IR, ALLOWED 3297}; 3298 3299static int has_channel(struct wpa_global *global, 3300 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3301{ 3302 int i; 3303 unsigned int freq; 3304 3305 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3306 chan * 5; 3307 if (wpas_p2p_disallowed_freq(global, freq)) 3308 return NOT_ALLOWED; 3309 3310 for (i = 0; i < mode->num_channels; i++) { 3311 if (mode->channels[i].chan == chan) { 3312 if (flags) 3313 *flags = mode->channels[i].flag; 3314 if (mode->channels[i].flag & 3315 (HOSTAPD_CHAN_DISABLED | 3316 HOSTAPD_CHAN_RADAR)) 3317 return NOT_ALLOWED; 3318 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3319 return NO_IR; 3320 return ALLOWED; 3321 } 3322 } 3323 3324 return NOT_ALLOWED; 3325} 3326 3327 3328struct p2p_oper_class_map { 3329 enum hostapd_hw_mode mode; 3330 u8 op_class; 3331 u8 min_chan; 3332 u8 max_chan; 3333 u8 inc; 3334 enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw; 3335}; 3336 3337static const struct p2p_oper_class_map op_class[] = { 3338 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 3339#if 0 /* Do not enable HT40 on 2 GHz for now */ 3340 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 3341 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 3342#endif 3343 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 3344 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 3345 { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 }, 3346 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 3347 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 3348 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 3349 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 3350 3351 /* 3352 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center 3353 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of 3354 * 80 MHz, but currently use the following definition for simplicity 3355 * (these center frequencies are not actual channels, which makes 3356 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of 3357 * removing invalid channels. 3358 */ 3359 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 }, 3360 { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 }, 3361 { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 }, 3362 { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 }, 3363 { -1, 0, 0, 0, 0, BW20 } 3364}; 3365 3366 3367static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3368 struct hostapd_hw_modes *mode, 3369 u8 channel) 3370{ 3371 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3372 unsigned int i; 3373 3374 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3375 return 0; 3376 3377 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3378 /* 3379 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3380 * so the center channel is 6 channels away from the start/end. 3381 */ 3382 if (channel >= center_channels[i] - 6 && 3383 channel <= center_channels[i] + 6) 3384 return center_channels[i]; 3385 3386 return 0; 3387} 3388 3389 3390static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3391 struct hostapd_hw_modes *mode, 3392 u8 channel, u8 bw) 3393{ 3394 u8 center_chan; 3395 int i, flags; 3396 enum chan_allowed res, ret = ALLOWED; 3397 3398 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3399 if (!center_chan) 3400 return NOT_ALLOWED; 3401 if (center_chan >= 58 && center_chan <= 138) 3402 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3403 3404 /* check all the channels are available */ 3405 for (i = 0; i < 4; i++) { 3406 int adj_chan = center_chan - 6 + i * 4; 3407 3408 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3409 if (res == NOT_ALLOWED) 3410 return NOT_ALLOWED; 3411 if (res == NO_IR) 3412 ret = NO_IR; 3413 3414 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3415 return NOT_ALLOWED; 3416 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3417 return NOT_ALLOWED; 3418 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3419 return NOT_ALLOWED; 3420 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3421 return NOT_ALLOWED; 3422 } 3423 3424 return ret; 3425} 3426 3427 3428static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3429 struct hostapd_hw_modes *mode, 3430 u8 channel) 3431{ 3432 u8 center_channels[] = { 50, 114 }; 3433 unsigned int i; 3434 3435 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3436 return 0; 3437 3438 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3439 /* 3440 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3441 * so the center channel is 14 channels away from the start/end. 3442 */ 3443 if (channel >= center_channels[i] - 14 && 3444 channel <= center_channels[i] + 14) 3445 return center_channels[i]; 3446 3447 return 0; 3448} 3449 3450 3451static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3452 struct hostapd_hw_modes *mode, 3453 u8 channel, u8 bw) 3454{ 3455 u8 center_chan; 3456 int i, flags; 3457 enum chan_allowed res, ret = ALLOWED; 3458 3459 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3460 if (!center_chan) 3461 return NOT_ALLOWED; 3462 /* VHT 160 MHz uses DFS channels in most countries. */ 3463 3464 /* Check all the channels are available */ 3465 for (i = 0; i < 8; i++) { 3466 int adj_chan = center_chan - 14 + i * 4; 3467 3468 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3469 if (res == NOT_ALLOWED) 3470 return NOT_ALLOWED; 3471 3472 if (res == NO_IR) 3473 ret = NO_IR; 3474 3475 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3476 return NOT_ALLOWED; 3477 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3478 return NOT_ALLOWED; 3479 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3480 return NOT_ALLOWED; 3481 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3482 return NOT_ALLOWED; 3483 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3484 return NOT_ALLOWED; 3485 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3486 return NOT_ALLOWED; 3487 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3488 return NOT_ALLOWED; 3489 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3490 return NOT_ALLOWED; 3491 } 3492 3493 return ret; 3494} 3495 3496 3497static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3498 struct hostapd_hw_modes *mode, 3499 u8 channel, u8 bw) 3500{ 3501 int flag = 0; 3502 enum chan_allowed res, res2; 3503 3504 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3505 if (bw == BW40MINUS) { 3506 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3507 return NOT_ALLOWED; 3508 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3509 } else if (bw == BW40PLUS) { 3510 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3511 return NOT_ALLOWED; 3512 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3513 } else if (bw == BW80) { 3514 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3515 } else if (bw == BW160) { 3516 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3517 } 3518 3519 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3520 return NOT_ALLOWED; 3521 if (res == NO_IR || res2 == NO_IR) 3522 return NO_IR; 3523 return res; 3524} 3525 3526 3527static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3528 struct p2p_channels *chan, 3529 struct p2p_channels *cli_chan) 3530{ 3531 struct hostapd_hw_modes *mode; 3532 int cla, op, cli_cla; 3533 3534 if (wpa_s->hw.modes == NULL) { 3535 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3536 "of all supported channels; assume dualband " 3537 "support"); 3538 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3539 } 3540 3541 cla = cli_cla = 0; 3542 3543 for (op = 0; op_class[op].op_class; op++) { 3544 const struct p2p_oper_class_map *o = &op_class[op]; 3545 u8 ch; 3546 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3547 3548 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3549 if (mode == NULL) 3550 continue; 3551 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3552 wpa_s->global->p2p_24ghz_social_channels = 1; 3553 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3554 enum chan_allowed res; 3555 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3556 if (res == ALLOWED) { 3557 if (reg == NULL) { 3558 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3559 o->op_class); 3560 reg = &chan->reg_class[cla]; 3561 cla++; 3562 reg->reg_class = o->op_class; 3563 } 3564 reg->channel[reg->channels] = ch; 3565 reg->channels++; 3566 } else if (res == NO_IR && 3567 wpa_s->conf->p2p_add_cli_chan) { 3568 if (cli_reg == NULL) { 3569 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3570 o->op_class); 3571 cli_reg = &cli_chan->reg_class[cli_cla]; 3572 cli_cla++; 3573 cli_reg->reg_class = o->op_class; 3574 } 3575 cli_reg->channel[cli_reg->channels] = ch; 3576 cli_reg->channels++; 3577 } 3578 } 3579 if (reg) { 3580 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3581 reg->channel, reg->channels); 3582 } 3583 if (cli_reg) { 3584 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3585 cli_reg->channel, cli_reg->channels); 3586 } 3587 } 3588 3589 chan->reg_classes = cla; 3590 cli_chan->reg_classes = cli_cla; 3591 3592 return 0; 3593} 3594 3595 3596int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3597 struct hostapd_hw_modes *mode, u8 channel) 3598{ 3599 int op; 3600 enum chan_allowed ret; 3601 3602 for (op = 0; op_class[op].op_class; op++) { 3603 const struct p2p_oper_class_map *o = &op_class[op]; 3604 u8 ch; 3605 3606 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3607 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3608 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3609 ch != channel) 3610 continue; 3611 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3612 if (ret == ALLOWED) 3613 return (o->bw == BW40MINUS) ? -1 : 1; 3614 } 3615 } 3616 return 0; 3617} 3618 3619 3620int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3621 struct hostapd_hw_modes *mode, u8 channel) 3622{ 3623 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3624 return 0; 3625 3626 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3627} 3628 3629 3630int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3631 struct hostapd_hw_modes *mode, u8 channel) 3632{ 3633 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3634 return 0; 3635 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3636} 3637 3638 3639static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3640 size_t buf_len) 3641{ 3642 struct wpa_supplicant *wpa_s = ctx; 3643 3644 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3645 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3646 break; 3647 } 3648 if (wpa_s == NULL) 3649 return -1; 3650 3651 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3652} 3653 3654 3655struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3656 const u8 *ssid, size_t ssid_len) 3657{ 3658 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3659 struct wpa_ssid *s = wpa_s->current_ssid; 3660 if (s == NULL) 3661 continue; 3662 if (s->mode != WPAS_MODE_P2P_GO && 3663 s->mode != WPAS_MODE_AP && 3664 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3665 continue; 3666 if (s->ssid_len != ssid_len || 3667 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3668 continue; 3669 return wpa_s; 3670 } 3671 3672 return NULL; 3673 3674} 3675 3676 3677struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3678 const u8 *peer_dev_addr) 3679{ 3680 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3681 struct wpa_ssid *ssid = wpa_s->current_ssid; 3682 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3683 continue; 3684 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3685 return wpa_s; 3686 } 3687 3688 return NULL; 3689} 3690 3691 3692static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3693{ 3694 struct wpa_supplicant *wpa_s = ctx; 3695 3696 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3697} 3698 3699 3700static int wpas_is_concurrent_session_active(void *ctx) 3701{ 3702 struct wpa_supplicant *wpa_s = ctx; 3703 struct wpa_supplicant *ifs; 3704 3705 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3706 if (ifs == wpa_s) 3707 continue; 3708 if (ifs->wpa_state > WPA_ASSOCIATED) 3709 return 1; 3710 } 3711 return 0; 3712} 3713 3714 3715static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3716{ 3717 struct wpa_supplicant *wpa_s = ctx; 3718 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3719} 3720 3721 3722int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3723 const char *conf_p2p_dev) 3724{ 3725 struct wpa_interface iface; 3726 struct wpa_supplicant *p2pdev_wpa_s; 3727 char ifname[100]; 3728 char force_name[100]; 3729 int ret; 3730 3731 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3732 wpa_s->ifname); 3733 if (os_snprintf_error(sizeof(ifname), ret)) 3734 return -1; 3735 force_name[0] = '\0'; 3736 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3737 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3738 force_name, wpa_s->pending_interface_addr, NULL); 3739 if (ret < 0) { 3740 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3741 return ret; 3742 } 3743 os_strlcpy(wpa_s->pending_interface_name, ifname, 3744 sizeof(wpa_s->pending_interface_name)); 3745 3746 os_memset(&iface, 0, sizeof(iface)); 3747 iface.p2p_mgmt = 1; 3748 iface.ifname = wpa_s->pending_interface_name; 3749 iface.driver = wpa_s->driver->name; 3750 iface.driver_param = wpa_s->conf->driver_param; 3751 3752 /* 3753 * If a P2P Device configuration file was given, use it as the interface 3754 * configuration file (instead of using parent's configuration file. 3755 */ 3756 if (conf_p2p_dev) { 3757 iface.confname = conf_p2p_dev; 3758 iface.ctrl_interface = NULL; 3759 } else { 3760 iface.confname = wpa_s->confname; 3761 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3762 } 3763 3764 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3765 if (!p2pdev_wpa_s) { 3766 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3767 return -1; 3768 } 3769 3770 wpa_s->pending_interface_name[0] = '\0'; 3771 return 0; 3772} 3773 3774 3775static 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 3797static 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 3830static 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 3872static 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 3917static 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 3945static 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{ 3955 struct wpa_supplicant *wpa_s = ctx; 3956 u8 mac[ETH_ALEN]; 3957 struct wpa_ssid *persistent_go, *stale, *s = NULL; 3958 int save_config = 0; 3959 struct wpa_supplicant *go_wpa_s; 3960 char feat_cap_str[256]; 3961 3962 if (!dev) 3963 return; 3964 3965 os_memset(mac, 0, ETH_ALEN); 3966 if (!adv_mac) 3967 adv_mac = mac; 3968 if (!ses_mac) 3969 ses_mac = mac; 3970 if (!grp_mac) 3971 grp_mac = mac; 3972 3973 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 3974 feat_cap, feat_cap_len); 3975 3976 if (prov_start) { 3977 if (session_info == NULL) { 3978 wpa_msg_global(wpa_s, MSG_INFO, 3979 P2P_EVENT_P2PS_PROVISION_START MACSTR 3980 " adv_id=%x conncap=%x" 3981 " adv_mac=" MACSTR 3982 " session=%x mac=" MACSTR 3983 " dev_passwd_id=%d%s", 3984 MAC2STR(dev), adv_id, conncap, 3985 MAC2STR(adv_mac), 3986 ses_id, MAC2STR(ses_mac), 3987 passwd_id, feat_cap_str); 3988 } else { 3989 wpa_msg_global(wpa_s, MSG_INFO, 3990 P2P_EVENT_P2PS_PROVISION_START MACSTR 3991 " adv_id=%x conncap=%x" 3992 " adv_mac=" MACSTR 3993 " session=%x mac=" MACSTR 3994 " dev_passwd_id=%d info='%s'%s", 3995 MAC2STR(dev), adv_id, conncap, 3996 MAC2STR(adv_mac), 3997 ses_id, MAC2STR(ses_mac), 3998 passwd_id, session_info, feat_cap_str); 3999 } 4000 return; 4001 } 4002 4003 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4004 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4005 4006 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4007 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4008 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4009 4010 if (persistent_go && !persistent_go->num_p2p_clients) { 4011 /* remove empty persistent GO */ 4012 wpa_config_remove_network(wpa_s->conf, 4013 persistent_go->id); 4014 } 4015 4016 wpa_msg_global(wpa_s, MSG_INFO, 4017 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4018 " status=%d" 4019 " adv_id=%x adv_mac=" MACSTR 4020 " session=%x mac=" MACSTR "%s", 4021 MAC2STR(dev), status, 4022 adv_id, MAC2STR(adv_mac), 4023 ses_id, MAC2STR(ses_mac), feat_cap_str); 4024 return; 4025 } 4026 4027 /* Clean up stale persistent groups with this device */ 4028 if (persist_ssid && persist_ssid_size) 4029 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4030 persist_ssid_size); 4031 4032 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4033 is_zero_ether_addr(grp_mac)) { 4034 wpa_dbg(wpa_s, MSG_ERROR, 4035 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4036 return; 4037 } 4038 4039 for (;;) { 4040 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4041 if (!stale) 4042 break; 4043 4044 if (s && s->ssid_len == stale->ssid_len && 4045 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4046 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4047 break; 4048 4049 /* Remove stale persistent group */ 4050 if (stale->mode != WPAS_MODE_P2P_GO || 4051 stale->num_p2p_clients <= 1) { 4052 wpa_config_remove_network(wpa_s->conf, stale->id); 4053 } else { 4054 size_t i; 4055 4056 for (i = 0; i < stale->num_p2p_clients; i++) { 4057 if (os_memcmp(stale->p2p_client_list + 4058 i * ETH_ALEN, 4059 dev, ETH_ALEN) == 0) { 4060 os_memmove(stale->p2p_client_list + 4061 i * ETH_ALEN, 4062 stale->p2p_client_list + 4063 (i + 1) * ETH_ALEN, 4064 (stale->num_p2p_clients - 4065 i - 1) * ETH_ALEN); 4066 break; 4067 } 4068 } 4069 stale->num_p2p_clients--; 4070 } 4071 save_config = 1; 4072 } 4073 4074 if (save_config) 4075 p2p_config_write(wpa_s); 4076 4077 if (s) { 4078 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4079 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4080 4081 if (persistent_go && s != persistent_go && 4082 !persistent_go->num_p2p_clients) { 4083 /* remove empty persistent GO */ 4084 wpa_config_remove_network(wpa_s->conf, 4085 persistent_go->id); 4086 /* Save config */ 4087 } 4088 4089 wpa_msg_global(wpa_s, MSG_INFO, 4090 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4091 " status=%d" 4092 " adv_id=%x adv_mac=" MACSTR 4093 " session=%x mac=" MACSTR 4094 " persist=%d%s", 4095 MAC2STR(dev), status, 4096 adv_id, MAC2STR(adv_mac), 4097 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4098 return; 4099 } 4100 4101 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4102 /* 4103 * We need to copy the interface name. Simply saving a 4104 * pointer isn't enough, since if we use pending_interface_name 4105 * it will be overwritten when the group is added. 4106 */ 4107 char go_ifname[100]; 4108 4109 go_ifname[0] = '\0'; 4110 if (!go_wpa_s) { 4111 wpa_s->global->pending_p2ps_group = 1; 4112 wpa_s->global->pending_p2ps_group_freq = freq; 4113 4114 if (!wpas_p2p_create_iface(wpa_s)) 4115 os_memcpy(go_ifname, wpa_s->ifname, 4116 sizeof(go_ifname)); 4117 else if (wpa_s->pending_interface_name[0]) 4118 os_memcpy(go_ifname, 4119 wpa_s->pending_interface_name, 4120 sizeof(go_ifname)); 4121 4122 if (!go_ifname[0]) { 4123 wpas_p2ps_prov_complete( 4124 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4125 dev, adv_mac, ses_mac, 4126 grp_mac, adv_id, ses_id, 0, 0, 4127 NULL, 0, 0, 0, NULL, NULL, 0, 0); 4128 return; 4129 } 4130 4131 /* If PD Resp complete, start up the GO */ 4132 if (response_done && persistent_go) { 4133 wpas_p2p_group_add_persistent( 4134 wpa_s, persistent_go, 4135 0, 0, freq, 0, 0, 0, 0, NULL, 4136 persistent_go->mode == 4137 WPAS_MODE_P2P_GO ? 4138 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4139 0, 0); 4140 } else if (response_done) { 4141 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4142 } 4143 4144 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4145 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4146 ETH_ALEN); 4147 wpa_s->p2ps_method_config_any = 1; 4148 } 4149 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4150 os_memcpy(go_ifname, go_wpa_s->ifname, 4151 sizeof(go_ifname)); 4152 4153 if (is_zero_ether_addr(grp_mac)) { 4154 wpa_dbg(go_wpa_s, MSG_DEBUG, 4155 "P2P: Setting PIN-1 for ANY"); 4156 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4157 "12345670", NULL, 0, 4158 0); 4159 } else { 4160 wpa_dbg(go_wpa_s, MSG_DEBUG, 4161 "P2P: Setting PIN-1 for " MACSTR, 4162 MAC2STR(grp_mac)); 4163 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4164 "12345670", NULL, 0, 4165 0); 4166 } 4167 4168 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4169 wpa_s->p2ps_method_config_any = 1; 4170 } 4171 4172 wpa_msg_global(wpa_s, MSG_INFO, 4173 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4174 " status=%d conncap=%x" 4175 " adv_id=%x adv_mac=" MACSTR 4176 " session=%x mac=" MACSTR 4177 " dev_passwd_id=%d go=%s%s", 4178 MAC2STR(dev), status, conncap, 4179 adv_id, MAC2STR(adv_mac), 4180 ses_id, MAC2STR(ses_mac), 4181 passwd_id, go_ifname, feat_cap_str); 4182 return; 4183 } 4184 4185 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4186 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4187 4188 if (persistent_go && !persistent_go->num_p2p_clients) { 4189 /* remove empty persistent GO */ 4190 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4191 } 4192 4193 if (conncap == P2PS_SETUP_CLIENT) { 4194 wpa_msg_global(wpa_s, MSG_INFO, 4195 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4196 " status=%d conncap=%x" 4197 " adv_id=%x adv_mac=" MACSTR 4198 " session=%x mac=" MACSTR 4199 " dev_passwd_id=%d join=" MACSTR "%s", 4200 MAC2STR(dev), status, conncap, 4201 adv_id, MAC2STR(adv_mac), 4202 ses_id, MAC2STR(ses_mac), 4203 passwd_id, MAC2STR(grp_mac), feat_cap_str); 4204 } else { 4205 wpa_msg_global(wpa_s, MSG_INFO, 4206 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4207 " status=%d conncap=%x" 4208 " adv_id=%x adv_mac=" MACSTR 4209 " session=%x mac=" MACSTR 4210 " dev_passwd_id=%d%s", 4211 MAC2STR(dev), status, conncap, 4212 adv_id, MAC2STR(adv_mac), 4213 ses_id, MAC2STR(ses_mac), 4214 passwd_id, feat_cap_str); 4215 } 4216} 4217 4218 4219static int _wpas_p2p_in_progress(void *ctx) 4220{ 4221 struct wpa_supplicant *wpa_s = ctx; 4222 return wpas_p2p_in_progress(wpa_s); 4223} 4224 4225 4226static int wpas_prov_disc_resp_cb(void *ctx) 4227{ 4228 struct wpa_supplicant *wpa_s = ctx; 4229 struct wpa_ssid *persistent_go; 4230 unsigned int freq; 4231 4232 if (!wpa_s->global->pending_p2ps_group) 4233 return 0; 4234 4235 freq = wpa_s->global->pending_p2ps_group_freq; 4236 wpa_s->global->pending_p2ps_group_freq = 0; 4237 wpa_s->global->pending_p2ps_group = 0; 4238 4239 if (wpas_p2p_get_go_group(wpa_s)) 4240 return 0; 4241 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4242 4243 if (persistent_go) { 4244 wpas_p2p_group_add_persistent( 4245 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL, 4246 persistent_go->mode == WPAS_MODE_P2P_GO ? 4247 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4248 } else { 4249 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4250 } 4251 4252 return 1; 4253} 4254 4255 4256static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4257 unsigned int *len, 4258 unsigned int *freq_list) 4259{ 4260 struct wpa_supplicant *wpa_s = ctx; 4261 4262 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4263 WPA_IF_P2P_CLIENT, len, freq_list); 4264} 4265 4266 4267/** 4268 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4269 * @global: Pointer to global data from wpa_supplicant_init() 4270 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4271 * Returns: 0 on success, -1 on failure 4272 */ 4273int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4274{ 4275 struct p2p_config p2p; 4276 int i; 4277 4278 if (wpa_s->conf->p2p_disabled) 4279 return 0; 4280 4281 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4282 return 0; 4283 4284 if (global->p2p) 4285 return 0; 4286 4287 os_memset(&p2p, 0, sizeof(p2p)); 4288 p2p.cb_ctx = wpa_s; 4289 p2p.debug_print = wpas_p2p_debug_print; 4290 p2p.p2p_scan = wpas_p2p_scan; 4291 p2p.send_action = wpas_send_action; 4292 p2p.send_action_done = wpas_send_action_done; 4293 p2p.go_neg_completed = wpas_go_neg_completed; 4294 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4295 p2p.dev_found = wpas_dev_found; 4296 p2p.dev_lost = wpas_dev_lost; 4297 p2p.find_stopped = wpas_find_stopped; 4298 p2p.start_listen = wpas_start_listen; 4299 p2p.stop_listen = wpas_stop_listen; 4300 p2p.send_probe_resp = wpas_send_probe_resp; 4301 p2p.sd_request = wpas_sd_request; 4302 p2p.sd_response = wpas_sd_response; 4303 p2p.prov_disc_req = wpas_prov_disc_req; 4304 p2p.prov_disc_resp = wpas_prov_disc_resp; 4305 p2p.prov_disc_fail = wpas_prov_disc_fail; 4306 p2p.invitation_process = wpas_invitation_process; 4307 p2p.invitation_received = wpas_invitation_received; 4308 p2p.invitation_result = wpas_invitation_result; 4309 p2p.get_noa = wpas_get_noa; 4310 p2p.go_connected = wpas_go_connected; 4311 p2p.presence_resp = wpas_presence_resp; 4312 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4313 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4314 p2p.get_persistent_group = wpas_get_persistent_group; 4315 p2p.get_go_info = wpas_get_go_info; 4316 p2p.remove_stale_groups = wpas_remove_stale_groups; 4317 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4318 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4319 p2p.p2ps_group_capability = p2ps_group_capability; 4320 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4321 4322 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4323 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4324 p2p.dev_name = wpa_s->conf->device_name; 4325 p2p.manufacturer = wpa_s->conf->manufacturer; 4326 p2p.model_name = wpa_s->conf->model_name; 4327 p2p.model_number = wpa_s->conf->model_number; 4328 p2p.serial_number = wpa_s->conf->serial_number; 4329 if (wpa_s->wps) { 4330 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4331 p2p.config_methods = wpa_s->wps->config_methods; 4332 } 4333 4334 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4335 wpa_printf(MSG_ERROR, 4336 "P2P: Failed to configure supported channel list"); 4337 return -1; 4338 } 4339 4340 if (wpa_s->conf->p2p_listen_reg_class && 4341 wpa_s->conf->p2p_listen_channel) { 4342 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4343 p2p.channel = wpa_s->conf->p2p_listen_channel; 4344 p2p.channel_forced = 1; 4345 } else { 4346 /* 4347 * Pick one of the social channels randomly as the listen 4348 * channel. 4349 */ 4350 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4351 &p2p.channel) != 0) { 4352 wpa_printf(MSG_INFO, 4353 "P2P: No social channels supported by the driver - do not enable P2P"); 4354 return 0; 4355 } 4356 p2p.channel_forced = 0; 4357 } 4358 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4359 p2p.reg_class, p2p.channel); 4360 4361 if (wpa_s->conf->p2p_oper_reg_class && 4362 wpa_s->conf->p2p_oper_channel) { 4363 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4364 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4365 p2p.cfg_op_channel = 1; 4366 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4367 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4368 4369 } else { 4370 /* 4371 * Use random operation channel from 2.4 GHz band social 4372 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4373 * other preference is indicated. 4374 */ 4375 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4376 &p2p.op_channel) != 0) { 4377 wpa_printf(MSG_ERROR, 4378 "P2P: Failed to select random social channel as operation channel"); 4379 return -1; 4380 } 4381 p2p.cfg_op_channel = 0; 4382 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4383 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4384 } 4385 4386 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4387 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4388 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4389 } 4390 4391 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4392 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4393 p2p.country[2] = 0x04; 4394 } else 4395 os_memcpy(p2p.country, "XX\x04", 3); 4396 4397 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4398 WPS_DEV_TYPE_LEN); 4399 4400 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4401 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4402 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4403 4404 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4405 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4406 4407 p2p.max_peers = 100; 4408 4409 if (wpa_s->conf->p2p_ssid_postfix) { 4410 p2p.ssid_postfix_len = 4411 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4412 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4413 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4414 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4415 p2p.ssid_postfix_len); 4416 } 4417 4418 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4419 4420 p2p.max_listen = wpa_s->max_remain_on_chan; 4421 4422 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4423 wpa_s->conf->p2p_passphrase_len <= 63) 4424 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4425 else 4426 p2p.passphrase_len = 8; 4427 4428 global->p2p = p2p_init(&p2p); 4429 if (global->p2p == NULL) 4430 return -1; 4431 global->p2p_init_wpa_s = wpa_s; 4432 4433 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4434 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4435 continue; 4436 p2p_add_wps_vendor_extension( 4437 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4438 } 4439 4440 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4441 4442 return 0; 4443} 4444 4445 4446/** 4447 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4448 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4449 * 4450 * This function deinitialize per-interface P2P data. 4451 */ 4452void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4453{ 4454 if (wpa_s->driver && wpa_s->drv_priv) 4455 wpa_drv_probe_req_report(wpa_s, 0); 4456 4457 if (wpa_s->go_params) { 4458 /* Clear any stored provisioning info */ 4459 p2p_clear_provisioning_info( 4460 wpa_s->global->p2p, 4461 wpa_s->go_params->peer_device_addr); 4462 } 4463 4464 os_free(wpa_s->go_params); 4465 wpa_s->go_params = NULL; 4466 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4467 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4468 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4469 wpa_s->p2p_long_listen = 0; 4470 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4471 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4472 wpas_p2p_remove_pending_group_interface(wpa_s); 4473 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4474 wpas_p2p_listen_work_done(wpa_s); 4475 if (wpa_s->p2p_send_action_work) { 4476 os_free(wpa_s->p2p_send_action_work->ctx); 4477 radio_work_done(wpa_s->p2p_send_action_work); 4478 wpa_s->p2p_send_action_work = NULL; 4479 } 4480 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4481 4482 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4483 wpa_s->p2p_oob_dev_pw = NULL; 4484 4485 os_free(wpa_s->p2p_group_common_freqs); 4486 wpa_s->p2p_group_common_freqs = NULL; 4487 wpa_s->p2p_group_common_freqs_num = 0; 4488 4489 /* TODO: remove group interface from the driver if this wpa_s instance 4490 * is on top of a P2P group interface */ 4491} 4492 4493 4494/** 4495 * wpas_p2p_deinit_global - Deinitialize global P2P module 4496 * @global: Pointer to global data from wpa_supplicant_init() 4497 * 4498 * This function deinitializes the global (per device) P2P module. 4499 */ 4500static void wpas_p2p_deinit_global(struct wpa_global *global) 4501{ 4502 struct wpa_supplicant *wpa_s, *tmp; 4503 4504 wpa_s = global->ifaces; 4505 4506 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4507 4508 /* Remove remaining P2P group interfaces */ 4509 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4510 wpa_s = wpa_s->next; 4511 while (wpa_s) { 4512 tmp = global->ifaces; 4513 while (tmp && 4514 (tmp == wpa_s || 4515 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4516 tmp = tmp->next; 4517 } 4518 if (tmp == NULL) 4519 break; 4520 /* Disconnect from the P2P group and deinit the interface */ 4521 wpas_p2p_disconnect(tmp); 4522 } 4523 4524 /* 4525 * Deinit GO data on any possibly remaining interface (if main 4526 * interface is used as GO). 4527 */ 4528 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4529 if (wpa_s->ap_iface) 4530 wpas_p2p_group_deinit(wpa_s); 4531 } 4532 4533 p2p_deinit(global->p2p); 4534 global->p2p = NULL; 4535 global->p2p_init_wpa_s = NULL; 4536} 4537 4538 4539static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4540{ 4541 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 4542 wpa_s->conf->p2p_no_group_iface) 4543 return 0; /* separate interface disabled per configuration */ 4544 if (wpa_s->drv_flags & 4545 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4546 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4547 return 1; /* P2P group requires a new interface in every case 4548 */ 4549 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4550 return 0; /* driver does not support concurrent operations */ 4551 if (wpa_s->global->ifaces->next) 4552 return 1; /* more that one interface already in use */ 4553 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4554 return 1; /* this interface is already in use */ 4555 return 0; 4556} 4557 4558 4559static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4560 const u8 *peer_addr, 4561 enum p2p_wps_method wps_method, 4562 int go_intent, const u8 *own_interface_addr, 4563 unsigned int force_freq, int persistent_group, 4564 struct wpa_ssid *ssid, unsigned int pref_freq) 4565{ 4566 if (persistent_group && wpa_s->conf->persistent_reconnect) 4567 persistent_group = 2; 4568 4569 /* 4570 * Increase GO config timeout if HT40 is used since it takes some time 4571 * to scan channels for coex purposes before the BSS can be started. 4572 */ 4573 p2p_set_config_timeout(wpa_s->global->p2p, 4574 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4575 4576 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4577 go_intent, own_interface_addr, force_freq, 4578 persistent_group, ssid ? ssid->ssid : NULL, 4579 ssid ? ssid->ssid_len : 0, 4580 wpa_s->p2p_pd_before_go_neg, pref_freq, 4581 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4582 0); 4583} 4584 4585 4586static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4587 const u8 *peer_addr, 4588 enum p2p_wps_method wps_method, 4589 int go_intent, const u8 *own_interface_addr, 4590 unsigned int force_freq, int persistent_group, 4591 struct wpa_ssid *ssid, unsigned int pref_freq) 4592{ 4593 if (persistent_group && wpa_s->conf->persistent_reconnect) 4594 persistent_group = 2; 4595 4596 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4597 go_intent, own_interface_addr, force_freq, 4598 persistent_group, ssid ? ssid->ssid : NULL, 4599 ssid ? ssid->ssid_len : 0, pref_freq, 4600 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4601 0); 4602} 4603 4604 4605static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4606{ 4607 wpa_s->p2p_join_scan_count++; 4608 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4609 wpa_s->p2p_join_scan_count); 4610 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4611 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4612 " for join operationg - stop join attempt", 4613 MAC2STR(wpa_s->pending_join_iface_addr)); 4614 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4615 if (wpa_s->p2p_auto_pd) { 4616 wpa_s->p2p_auto_pd = 0; 4617 wpa_msg_global(wpa_s, MSG_INFO, 4618 P2P_EVENT_PROV_DISC_FAILURE 4619 " p2p_dev_addr=" MACSTR " status=N/A", 4620 MAC2STR(wpa_s->pending_join_dev_addr)); 4621 return; 4622 } 4623 wpa_msg_global(wpa_s->parent, MSG_INFO, 4624 P2P_EVENT_GROUP_FORMATION_FAILURE); 4625 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4626 } 4627} 4628 4629 4630static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4631{ 4632 int res; 4633 unsigned int num, i; 4634 struct wpa_used_freq_data *freqs; 4635 4636 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4637 /* Multiple channels are supported and not all are in use */ 4638 return 0; 4639 } 4640 4641 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4642 sizeof(struct wpa_used_freq_data)); 4643 if (!freqs) 4644 return 1; 4645 4646 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4647 wpa_s->num_multichan_concurrent); 4648 4649 for (i = 0; i < num; i++) { 4650 if (freqs[i].freq == freq) { 4651 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4652 freq); 4653 res = 0; 4654 goto exit_free; 4655 } 4656 } 4657 4658 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4659 res = 1; 4660 4661exit_free: 4662 os_free(freqs); 4663 return res; 4664} 4665 4666 4667static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4668 const u8 *peer_dev_addr) 4669{ 4670 struct wpa_bss *bss; 4671 int updated; 4672 4673 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4674 if (bss == NULL) 4675 return -1; 4676 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4677 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4678 "last scan"); 4679 return 0; 4680 } 4681 4682 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4683 &bss->last_update); 4684 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4685 "%ld.%06ld (%supdated in last scan)", 4686 bss->last_update.sec, bss->last_update.usec, 4687 updated ? "": "not "); 4688 4689 return updated; 4690} 4691 4692 4693static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4694 struct wpa_scan_results *scan_res) 4695{ 4696 struct wpa_bss *bss = NULL; 4697 int freq; 4698 u8 iface_addr[ETH_ALEN]; 4699 4700 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4701 4702 if (wpa_s->global->p2p_disabled) 4703 return; 4704 4705 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4706 scan_res ? (int) scan_res->num : -1, 4707 wpa_s->p2p_auto_join ? "auto_" : ""); 4708 4709 if (scan_res) 4710 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4711 4712 if (wpa_s->p2p_auto_pd) { 4713 int join = wpas_p2p_peer_go(wpa_s, 4714 wpa_s->pending_join_dev_addr); 4715 if (join == 0 && 4716 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4717 wpa_s->auto_pd_scan_retry++; 4718 bss = wpa_bss_get_bssid_latest( 4719 wpa_s, wpa_s->pending_join_dev_addr); 4720 if (bss) { 4721 freq = bss->freq; 4722 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4723 "the peer " MACSTR " at %d MHz", 4724 wpa_s->auto_pd_scan_retry, 4725 MAC2STR(wpa_s-> 4726 pending_join_dev_addr), 4727 freq); 4728 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4729 return; 4730 } 4731 } 4732 4733 if (join < 0) 4734 join = 0; 4735 4736 wpa_s->p2p_auto_pd = 0; 4737 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4738 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4739 MAC2STR(wpa_s->pending_join_dev_addr), join); 4740 if (p2p_prov_disc_req(wpa_s->global->p2p, 4741 wpa_s->pending_join_dev_addr, NULL, 4742 wpa_s->pending_pd_config_methods, join, 4743 0, wpa_s->user_initiated_pd) < 0) { 4744 wpa_s->p2p_auto_pd = 0; 4745 wpa_msg_global(wpa_s, MSG_INFO, 4746 P2P_EVENT_PROV_DISC_FAILURE 4747 " p2p_dev_addr=" MACSTR " status=N/A", 4748 MAC2STR(wpa_s->pending_join_dev_addr)); 4749 } 4750 return; 4751 } 4752 4753 if (wpa_s->p2p_auto_join) { 4754 int join = wpas_p2p_peer_go(wpa_s, 4755 wpa_s->pending_join_dev_addr); 4756 if (join < 0) { 4757 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4758 "running a GO -> use GO Negotiation"); 4759 wpa_msg_global(wpa_s->parent, MSG_INFO, 4760 P2P_EVENT_FALLBACK_TO_GO_NEG 4761 "reason=peer-not-running-GO"); 4762 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4763 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4764 wpa_s->p2p_persistent_group, 0, 0, 0, 4765 wpa_s->p2p_go_intent, 4766 wpa_s->p2p_connect_freq, 4767 wpa_s->p2p_go_vht_center_freq2, 4768 wpa_s->p2p_persistent_id, 4769 wpa_s->p2p_pd_before_go_neg, 4770 wpa_s->p2p_go_ht40, 4771 wpa_s->p2p_go_vht, 4772 wpa_s->p2p_go_max_oper_chwidth); 4773 return; 4774 } 4775 4776 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4777 "try to join the group", join ? "" : 4778 " in older scan"); 4779 if (!join) { 4780 wpa_msg_global(wpa_s->parent, MSG_INFO, 4781 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4782 wpa_s->p2p_fallback_to_go_neg = 1; 4783 } 4784 } 4785 4786 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4787 wpa_s->pending_join_iface_addr); 4788 if (freq < 0 && 4789 p2p_get_interface_addr(wpa_s->global->p2p, 4790 wpa_s->pending_join_dev_addr, 4791 iface_addr) == 0 && 4792 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4793 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4794 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4795 "address for join from " MACSTR " to " MACSTR 4796 " based on newly discovered P2P peer entry", 4797 MAC2STR(wpa_s->pending_join_iface_addr), 4798 MAC2STR(iface_addr)); 4799 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4800 ETH_ALEN); 4801 4802 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4803 wpa_s->pending_join_iface_addr); 4804 } 4805 if (freq >= 0) { 4806 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4807 "from P2P peer table: %d MHz", freq); 4808 } 4809 if (wpa_s->p2p_join_ssid_len) { 4810 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4811 MACSTR " and SSID %s", 4812 MAC2STR(wpa_s->pending_join_iface_addr), 4813 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4814 wpa_s->p2p_join_ssid_len)); 4815 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4816 wpa_s->p2p_join_ssid, 4817 wpa_s->p2p_join_ssid_len); 4818 } 4819 if (!bss) { 4820 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4821 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4822 bss = wpa_bss_get_bssid_latest(wpa_s, 4823 wpa_s->pending_join_iface_addr); 4824 } 4825 if (bss) { 4826 u8 dev_addr[ETH_ALEN]; 4827 4828 freq = bss->freq; 4829 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4830 "from BSS table: %d MHz (SSID %s)", freq, 4831 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4832 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 4833 dev_addr) == 0 && 4834 os_memcmp(wpa_s->pending_join_dev_addr, 4835 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 4836 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 4837 ETH_ALEN) != 0) { 4838 wpa_printf(MSG_DEBUG, 4839 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 4840 MAC2STR(dev_addr), 4841 MAC2STR(wpa_s->pending_join_dev_addr)); 4842 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 4843 ETH_ALEN); 4844 } 4845 } 4846 if (freq > 0) { 4847 u16 method; 4848 4849 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4850 wpa_msg_global(wpa_s->parent, MSG_INFO, 4851 P2P_EVENT_GROUP_FORMATION_FAILURE 4852 "reason=FREQ_CONFLICT"); 4853 wpas_notify_p2p_group_formation_failure( 4854 wpa_s, "FREQ_CONFLICT"); 4855 return; 4856 } 4857 4858 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4859 "prior to joining an existing group (GO " MACSTR 4860 " freq=%u MHz)", 4861 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4862 wpa_s->pending_pd_before_join = 1; 4863 4864 switch (wpa_s->pending_join_wps_method) { 4865 case WPS_PIN_DISPLAY: 4866 method = WPS_CONFIG_KEYPAD; 4867 break; 4868 case WPS_PIN_KEYPAD: 4869 method = WPS_CONFIG_DISPLAY; 4870 break; 4871 case WPS_PBC: 4872 method = WPS_CONFIG_PUSHBUTTON; 4873 break; 4874 case WPS_P2PS: 4875 method = WPS_CONFIG_P2PS; 4876 break; 4877 default: 4878 method = 0; 4879 break; 4880 } 4881 4882 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4883 wpa_s->pending_join_dev_addr) == 4884 method)) { 4885 /* 4886 * We have already performed provision discovery for 4887 * joining the group. Proceed directly to join 4888 * operation without duplicated provision discovery. */ 4889 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4890 "with " MACSTR " already done - proceed to " 4891 "join", 4892 MAC2STR(wpa_s->pending_join_dev_addr)); 4893 wpa_s->pending_pd_before_join = 0; 4894 goto start; 4895 } 4896 4897 if (p2p_prov_disc_req(wpa_s->global->p2p, 4898 wpa_s->pending_join_dev_addr, 4899 NULL, method, 1, 4900 freq, wpa_s->user_initiated_pd) < 0) { 4901 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4902 "Discovery Request before joining an " 4903 "existing group"); 4904 wpa_s->pending_pd_before_join = 0; 4905 goto start; 4906 } 4907 return; 4908 } 4909 4910 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4911 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4912 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4913 wpas_p2p_check_join_scan_limit(wpa_s); 4914 return; 4915 4916start: 4917 /* Start join operation immediately */ 4918 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 4919} 4920 4921 4922static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4923 const u8 *ssid, size_t ssid_len) 4924{ 4925 int ret; 4926 struct wpa_driver_scan_params params; 4927 struct wpabuf *wps_ie, *ies; 4928 size_t ielen; 4929 int freqs[2] = { 0, 0 }; 4930 4931 os_memset(¶ms, 0, sizeof(params)); 4932 4933 /* P2P Wildcard SSID */ 4934 params.num_ssids = 1; 4935 if (ssid && ssid_len) { 4936 params.ssids[0].ssid = ssid; 4937 params.ssids[0].ssid_len = ssid_len; 4938 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4939 wpa_s->p2p_join_ssid_len = ssid_len; 4940 } else { 4941 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4942 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4943 wpa_s->p2p_join_ssid_len = 0; 4944 } 4945 4946 wpa_s->wps->dev.p2p = 1; 4947 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4948 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4949 NULL); 4950 if (wps_ie == NULL) { 4951 wpas_p2p_scan_res_join(wpa_s, NULL); 4952 return; 4953 } 4954 4955 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 4956 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 4957 if (ies == NULL) { 4958 wpabuf_free(wps_ie); 4959 wpas_p2p_scan_res_join(wpa_s, NULL); 4960 return; 4961 } 4962 wpabuf_put_buf(ies, wps_ie); 4963 wpabuf_free(wps_ie); 4964 4965 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4966 4967 params.p2p_probe = 1; 4968 params.extra_ies = wpabuf_head(ies); 4969 params.extra_ies_len = wpabuf_len(ies); 4970 4971 if (!freq) { 4972 int oper_freq; 4973 /* 4974 * If freq is not provided, check the operating freq of the GO 4975 * and use a single channel scan on if possible. 4976 */ 4977 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 4978 wpa_s->pending_join_iface_addr); 4979 if (oper_freq > 0) 4980 freq = oper_freq; 4981 } 4982 if (freq > 0) { 4983 freqs[0] = freq; 4984 params.freqs = freqs; 4985 } 4986 4987 /* 4988 * Run a scan to update BSS table and start Provision Discovery once 4989 * the new scan results become available. 4990 */ 4991 ret = wpa_drv_scan(wpa_s, ¶ms); 4992 if (!ret) { 4993 os_get_reltime(&wpa_s->scan_trigger_time); 4994 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 4995 wpa_s->own_scan_requested = 1; 4996 } 4997 4998 wpabuf_free(ies); 4999 5000 if (ret) { 5001 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5002 "try again later"); 5003 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5004 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5005 wpas_p2p_check_join_scan_limit(wpa_s); 5006 } 5007} 5008 5009 5010static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5011{ 5012 struct wpa_supplicant *wpa_s = eloop_ctx; 5013 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5014} 5015 5016 5017static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5018 const u8 *dev_addr, enum p2p_wps_method wps_method, 5019 int auto_join, int op_freq, 5020 const u8 *ssid, size_t ssid_len) 5021{ 5022 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5023 MACSTR " dev " MACSTR " op_freq=%d)%s", 5024 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5025 auto_join ? " (auto_join)" : ""); 5026 if (ssid && ssid_len) { 5027 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5028 wpa_ssid_txt(ssid, ssid_len)); 5029 } 5030 5031 wpa_s->p2p_auto_pd = 0; 5032 wpa_s->p2p_auto_join = !!auto_join; 5033 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5034 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5035 wpa_s->pending_join_wps_method = wps_method; 5036 5037 /* Make sure we are not running find during connection establishment */ 5038 wpas_p2p_stop_find(wpa_s); 5039 5040 wpa_s->p2p_join_scan_count = 0; 5041 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5042 return 0; 5043} 5044 5045 5046static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5047 const u8 *ssid, size_t ssid_len) 5048{ 5049 struct wpa_supplicant *group; 5050 struct p2p_go_neg_results res; 5051 struct wpa_bss *bss; 5052 5053 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5054 if (group == NULL) 5055 return -1; 5056 if (group != wpa_s) { 5057 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5058 sizeof(group->p2p_pin)); 5059 group->p2p_wps_method = wpa_s->p2p_wps_method; 5060 } else { 5061 /* 5062 * Need to mark the current interface for p2p_group_formation 5063 * when a separate group interface is not used. This is needed 5064 * to allow p2p_cancel stop a pending p2p_connect-join. 5065 * wpas_p2p_init_group_interface() addresses this for the case 5066 * where a separate group interface is used. 5067 */ 5068 wpa_s->global->p2p_group_formation = wpa_s; 5069 } 5070 5071 group->p2p_in_provisioning = 1; 5072 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5073 5074 os_memset(&res, 0, sizeof(res)); 5075 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5076 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5077 ETH_ALEN); 5078 res.wps_method = wpa_s->pending_join_wps_method; 5079 if (freq && ssid && ssid_len) { 5080 res.freq = freq; 5081 res.ssid_len = ssid_len; 5082 os_memcpy(res.ssid, ssid, ssid_len); 5083 } else { 5084 bss = wpa_bss_get_bssid_latest(wpa_s, 5085 wpa_s->pending_join_iface_addr); 5086 if (bss) { 5087 res.freq = bss->freq; 5088 res.ssid_len = bss->ssid_len; 5089 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5090 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5091 bss->freq, 5092 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5093 } 5094 } 5095 5096 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5097 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5098 "starting client"); 5099 wpa_drv_cancel_remain_on_channel(wpa_s); 5100 wpa_s->off_channel_freq = 0; 5101 wpa_s->roc_waiting_drv_freq = 0; 5102 } 5103 wpas_start_wps_enrollee(group, &res); 5104 5105 /* 5106 * Allow a longer timeout for join-a-running-group than normal 15 5107 * second group formation timeout since the GO may not have authorized 5108 * our connection yet. 5109 */ 5110 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5111 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5112 wpa_s, NULL); 5113 5114 return 0; 5115} 5116 5117 5118static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5119 int *force_freq, int *pref_freq, int go, 5120 unsigned int *pref_freq_list, 5121 unsigned int *num_pref_freq) 5122{ 5123 struct wpa_used_freq_data *freqs; 5124 int res, best_freq, num_unused; 5125 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5126 5127 max_pref_freq = *num_pref_freq; 5128 *num_pref_freq = 0; 5129 5130 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5131 sizeof(struct wpa_used_freq_data)); 5132 if (!freqs) 5133 return -1; 5134 5135 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5136 wpa_s->num_multichan_concurrent); 5137 5138 /* 5139 * It is possible that the total number of used frequencies is bigger 5140 * than the number of frequencies used for P2P, so get the system wide 5141 * number of unused frequencies. 5142 */ 5143 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5144 5145 wpa_printf(MSG_DEBUG, 5146 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5147 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5148 5149 if (freq > 0) { 5150 int ret; 5151 if (go) 5152 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5153 else 5154 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5155 if (!ret) { 5156 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5157 ieee80211_is_dfs(freq)) { 5158 /* 5159 * If freq is a DFS channel and DFS is offloaded 5160 * to the driver, allow P2P GO to use it. 5161 */ 5162 wpa_printf(MSG_DEBUG, 5163 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5164 freq); 5165 } else { 5166 wpa_printf(MSG_DEBUG, 5167 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5168 freq); 5169 res = -3; 5170 goto exit_free; 5171 } 5172 } 5173 5174 for (i = 0; i < num; i++) { 5175 if (freqs[i].freq == freq) 5176 freq_in_use = 1; 5177 } 5178 5179 if (num_unused <= 0 && !freq_in_use) { 5180 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5181 freq); 5182 res = -2; 5183 goto exit_free; 5184 } 5185 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5186 "requested channel (%u MHz)", freq); 5187 *force_freq = freq; 5188 goto exit_ok; 5189 } 5190 5191 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5192 5193 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5194 enum wpa_driver_if_type iface_type; 5195 5196 if (go) 5197 iface_type = WPA_IF_P2P_GO; 5198 else 5199 iface_type = WPA_IF_P2P_CLIENT; 5200 5201 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5202 best_freq, go); 5203 5204 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5205 &max_pref_freq, 5206 pref_freq_list); 5207 if (!res && max_pref_freq > 0) { 5208 *num_pref_freq = max_pref_freq; 5209 i = 0; 5210 while (wpas_p2p_disallowed_freq(wpa_s->global, 5211 pref_freq_list[i]) && 5212 i < *num_pref_freq) { 5213 wpa_printf(MSG_DEBUG, 5214 "P2P: preferred_freq_list[%d]=%d is disallowed", 5215 i, pref_freq_list[i]); 5216 i++; 5217 } 5218 if (i != *num_pref_freq) { 5219 best_freq = pref_freq_list[i]; 5220 wpa_printf(MSG_DEBUG, 5221 "P2P: Using preferred_freq_list[%d]=%d", 5222 i, best_freq); 5223 } else { 5224 wpa_printf(MSG_DEBUG, 5225 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5226 *num_pref_freq = 0; 5227 } 5228 } else { 5229 wpa_printf(MSG_DEBUG, 5230 "P2P: No preferred frequency list available"); 5231 } 5232 } 5233 5234 /* We have a candidate frequency to use */ 5235 if (best_freq > 0) { 5236 if (*pref_freq == 0 && num_unused > 0) { 5237 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5238 best_freq); 5239 *pref_freq = best_freq; 5240 } else { 5241 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5242 best_freq); 5243 *force_freq = best_freq; 5244 } 5245 } else if (num_unused > 0) { 5246 wpa_printf(MSG_DEBUG, 5247 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5248 *force_freq = 0; 5249 } else { 5250 wpa_printf(MSG_DEBUG, 5251 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5252 res = -2; 5253 goto exit_free; 5254 } 5255 5256exit_ok: 5257 res = 0; 5258exit_free: 5259 os_free(freqs); 5260 return res; 5261} 5262 5263 5264/** 5265 * wpas_p2p_connect - Request P2P Group Formation to be started 5266 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5267 * @peer_addr: Address of the peer P2P Device 5268 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5269 * @persistent_group: Whether to create a persistent group 5270 * @auto_join: Whether to select join vs. GO Negotiation automatically 5271 * @join: Whether to join an existing group (as a client) instead of starting 5272 * Group Owner negotiation; @peer_addr is BSSID in that case 5273 * @auth: Whether to only authorize the connection instead of doing that and 5274 * initiating Group Owner negotiation 5275 * @go_intent: GO Intent or -1 to use default 5276 * @freq: Frequency for the group or 0 for auto-selection 5277 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5278 * @persistent_id: Persistent group credentials to use for forcing GO 5279 * parameters or -1 to generate new values (SSID/passphrase) 5280 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5281 * interoperability workaround when initiating group formation 5282 * @ht40: Start GO with 40 MHz channel width 5283 * @vht: Start GO with VHT support 5284 * @vht_chwidth: Channel width supported by GO operating with VHT support 5285 * (VHT_CHANWIDTH_*). 5286 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5287 * failure, -2 on failure due to channel not currently available, 5288 * -3 if forced channel is not supported 5289 */ 5290int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5291 const char *pin, enum p2p_wps_method wps_method, 5292 int persistent_group, int auto_join, int join, int auth, 5293 int go_intent, int freq, unsigned int vht_center_freq2, 5294 int persistent_id, int pd, int ht40, int vht, 5295 unsigned int vht_chwidth) 5296{ 5297 int force_freq = 0, pref_freq = 0; 5298 int ret = 0, res; 5299 enum wpa_driver_if_type iftype; 5300 const u8 *if_addr; 5301 struct wpa_ssid *ssid = NULL; 5302 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5303 5304 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5305 return -1; 5306 5307 if (persistent_id >= 0) { 5308 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5309 if (ssid == NULL || ssid->disabled != 2 || 5310 ssid->mode != WPAS_MODE_P2P_GO) 5311 return -1; 5312 } 5313 5314 os_free(wpa_s->global->add_psk); 5315 wpa_s->global->add_psk = NULL; 5316 5317 wpa_s->global->p2p_fail_on_wps_complete = 0; 5318 wpa_s->global->pending_p2ps_group = 0; 5319 wpa_s->global->pending_p2ps_group_freq = 0; 5320 wpa_s->p2ps_method_config_any = 0; 5321 5322 if (go_intent < 0) 5323 go_intent = wpa_s->conf->p2p_go_intent; 5324 5325 if (!auth) 5326 wpa_s->p2p_long_listen = 0; 5327 5328 wpa_s->p2p_wps_method = wps_method; 5329 wpa_s->p2p_persistent_group = !!persistent_group; 5330 wpa_s->p2p_persistent_id = persistent_id; 5331 wpa_s->p2p_go_intent = go_intent; 5332 wpa_s->p2p_connect_freq = freq; 5333 wpa_s->p2p_fallback_to_go_neg = 0; 5334 wpa_s->p2p_pd_before_go_neg = !!pd; 5335 wpa_s->p2p_go_ht40 = !!ht40; 5336 wpa_s->p2p_go_vht = !!vht; 5337 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5338 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5339 5340 if (pin) 5341 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5342 else if (wps_method == WPS_PIN_DISPLAY) { 5343 ret = wps_generate_pin(); 5344 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5345 "%08d", ret); 5346 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5347 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5348 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5349 wpa_s->p2p_pin); 5350 } else 5351 wpa_s->p2p_pin[0] = '\0'; 5352 5353 if (join || auto_join) { 5354 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5355 if (auth) { 5356 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5357 "connect a running group from " MACSTR, 5358 MAC2STR(peer_addr)); 5359 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5360 return ret; 5361 } 5362 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5363 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5364 iface_addr) < 0) { 5365 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5366 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5367 dev_addr); 5368 } 5369 if (auto_join) { 5370 os_get_reltime(&wpa_s->p2p_auto_started); 5371 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5372 "%ld.%06ld", 5373 wpa_s->p2p_auto_started.sec, 5374 wpa_s->p2p_auto_started.usec); 5375 } 5376 wpa_s->user_initiated_pd = 1; 5377 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5378 auto_join, freq, NULL, 0) < 0) 5379 return -1; 5380 return ret; 5381 } 5382 5383 size = P2P_MAX_PREF_CHANNELS; 5384 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5385 go_intent == 15, pref_freq_list, &size); 5386 if (res) 5387 return res; 5388 wpas_p2p_set_own_freq_preference(wpa_s, 5389 force_freq ? force_freq : pref_freq); 5390 5391 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5392 5393 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5394 5395 if (wpa_s->create_p2p_iface) { 5396 /* Prepare to add a new interface for the group */ 5397 iftype = WPA_IF_P2P_GROUP; 5398 if (go_intent == 15) 5399 iftype = WPA_IF_P2P_GO; 5400 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5401 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5402 "interface for the group"); 5403 return -1; 5404 } 5405 5406 if_addr = wpa_s->pending_interface_addr; 5407 } else { 5408 if_addr = wpa_s->own_addr; 5409 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5410 } 5411 5412 if (auth) { 5413 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5414 go_intent, if_addr, 5415 force_freq, persistent_group, ssid, 5416 pref_freq) < 0) 5417 return -1; 5418 return ret; 5419 } 5420 5421 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5422 go_intent, if_addr, force_freq, 5423 persistent_group, ssid, pref_freq) < 0) { 5424 if (wpa_s->create_p2p_iface) 5425 wpas_p2p_remove_pending_group_interface(wpa_s); 5426 return -1; 5427 } 5428 return ret; 5429} 5430 5431 5432/** 5433 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5434 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5435 * @freq: Frequency of the channel in MHz 5436 * @duration: Duration of the stay on the channel in milliseconds 5437 * 5438 * This callback is called when the driver indicates that it has started the 5439 * requested remain-on-channel duration. 5440 */ 5441void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5442 unsigned int freq, unsigned int duration) 5443{ 5444 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5445 return; 5446 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)", 5447 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5448 wpa_s->roc_waiting_drv_freq, freq, duration); 5449 if (wpa_s->off_channel_freq && 5450 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5451 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5452 wpa_s->pending_listen_duration); 5453 wpa_s->pending_listen_freq = 0; 5454 } else { 5455 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5456 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5457 freq, duration); 5458 } 5459} 5460 5461 5462int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5463{ 5464 /* Limit maximum Listen state time based on driver limitation. */ 5465 if (timeout > wpa_s->max_remain_on_chan) 5466 timeout = wpa_s->max_remain_on_chan; 5467 5468 return p2p_listen(wpa_s->global->p2p, timeout); 5469} 5470 5471 5472/** 5473 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5474 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5475 * @freq: Frequency of the channel in MHz 5476 * 5477 * This callback is called when the driver indicates that a remain-on-channel 5478 * operation has been completed, i.e., the duration on the requested channel 5479 * has timed out. 5480 */ 5481void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5482 unsigned int freq) 5483{ 5484 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5485 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5486 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5487 wpas_p2p_listen_work_done(wpa_s); 5488 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5489 return; 5490 if (wpa_s->p2p_long_listen > 0) 5491 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5492 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5493 return; /* P2P module started a new operation */ 5494 if (offchannel_pending_action_tx(wpa_s)) 5495 return; 5496 if (wpa_s->p2p_long_listen > 0) { 5497 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5498 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5499 } else { 5500 /* 5501 * When listen duration is over, stop listen & update p2p_state 5502 * to IDLE. 5503 */ 5504 p2p_stop_listen(wpa_s->global->p2p); 5505 } 5506} 5507 5508 5509/** 5510 * wpas_p2p_group_remove - Remove a P2P group 5511 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5512 * @ifname: Network interface name of the group interface or "*" to remove all 5513 * groups 5514 * Returns: 0 on success, -1 on failure 5515 * 5516 * This function is used to remove a P2P group. This can be used to disconnect 5517 * from a group in which the local end is a P2P Client or to end a P2P Group in 5518 * case the local end is the Group Owner. If a virtual network interface was 5519 * created for this group, that interface will be removed. Otherwise, only the 5520 * configured P2P group network will be removed from the interface. 5521 */ 5522int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5523{ 5524 struct wpa_global *global = wpa_s->global; 5525 struct wpa_supplicant *calling_wpa_s = wpa_s; 5526 5527 if (os_strcmp(ifname, "*") == 0) { 5528 struct wpa_supplicant *prev; 5529 wpa_s = global->ifaces; 5530 while (wpa_s) { 5531 prev = wpa_s; 5532 wpa_s = wpa_s->next; 5533 if (prev->p2p_group_interface != 5534 NOT_P2P_GROUP_INTERFACE || 5535 (prev->current_ssid && 5536 prev->current_ssid->p2p_group)) 5537 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5538 } 5539 return 0; 5540 } 5541 5542 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5543 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5544 break; 5545 } 5546 5547 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5548} 5549 5550 5551static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5552{ 5553 unsigned int r; 5554 5555 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5556 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5557 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5558 int res; 5559 5560 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5561 &size, pref_freq_list); 5562 if (!res && size > 0) { 5563 i = 0; 5564 while (wpas_p2p_disallowed_freq(wpa_s->global, 5565 pref_freq_list[i]) && 5566 i < size) { 5567 wpa_printf(MSG_DEBUG, 5568 "P2P: preferred_freq_list[%d]=%d is disallowed", 5569 i, pref_freq_list[i]); 5570 i++; 5571 } 5572 if (i != size) { 5573 freq = pref_freq_list[i]; 5574 wpa_printf(MSG_DEBUG, 5575 "P2P: Using preferred_freq_list[%d]=%d", 5576 i, freq); 5577 } else { 5578 wpa_printf(MSG_DEBUG, 5579 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5580 } 5581 } else { 5582 wpa_printf(MSG_DEBUG, 5583 "P2P: No preferred frequency list available"); 5584 } 5585 } 5586 5587 if (freq == 2) { 5588 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5589 "band"); 5590 if (wpa_s->best_24_freq > 0 && 5591 p2p_supported_freq_go(wpa_s->global->p2p, 5592 wpa_s->best_24_freq)) { 5593 freq = wpa_s->best_24_freq; 5594 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5595 "channel: %d MHz", freq); 5596 } else { 5597 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5598 return -1; 5599 freq = 2412 + (r % 3) * 25; 5600 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5601 "channel: %d MHz", freq); 5602 } 5603 } 5604 5605 if (freq == 5) { 5606 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5607 "band"); 5608 if (wpa_s->best_5_freq > 0 && 5609 p2p_supported_freq_go(wpa_s->global->p2p, 5610 wpa_s->best_5_freq)) { 5611 freq = wpa_s->best_5_freq; 5612 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5613 "channel: %d MHz", freq); 5614 } else { 5615 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5616 return -1; 5617 freq = 5180 + (r % 4) * 20; 5618 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5619 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5620 "5 GHz channel for P2P group"); 5621 return -1; 5622 } 5623 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5624 "channel: %d MHz", freq); 5625 } 5626 } 5627 5628 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5629 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5630 ieee80211_is_dfs(freq)) { 5631 /* 5632 * If freq is a DFS channel and DFS is offloaded to the 5633 * driver, allow P2P GO to use it. 5634 */ 5635 wpa_printf(MSG_DEBUG, "P2P: " 5636 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5637 __func__, freq); 5638 return freq; 5639 } 5640 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5641 "(%u MHz) is not supported for P2P uses", 5642 freq); 5643 return -1; 5644 } 5645 5646 return freq; 5647} 5648 5649 5650static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5651 const struct p2p_channels *channels, 5652 int freq) 5653{ 5654 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5655 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5656 freq_included(wpa_s, channels, freq)) 5657 return 1; 5658 return 0; 5659} 5660 5661 5662static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5663 struct p2p_go_neg_results *params, 5664 const struct p2p_channels *channels) 5665{ 5666 unsigned int i, r; 5667 5668 /* first try some random selection of the social channels */ 5669 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5670 return; 5671 5672 for (i = 0; i < 3; i++) { 5673 params->freq = 2412 + ((r + i) % 3) * 25; 5674 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5675 goto out; 5676 } 5677 5678 /* try all other channels in operating class 81 */ 5679 for (i = 0; i < 11; i++) { 5680 params->freq = 2412 + i * 5; 5681 5682 /* skip social channels; covered in the previous loop */ 5683 if (params->freq == 2412 || 5684 params->freq == 2437 || 5685 params->freq == 2462) 5686 continue; 5687 5688 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5689 goto out; 5690 } 5691 5692 /* try all channels in operating class 115 */ 5693 for (i = 0; i < 4; i++) { 5694 params->freq = 5180 + i * 20; 5695 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5696 freq_included(wpa_s, channels, params->freq) && 5697 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5698 goto out; 5699 } 5700 5701 /* try all channels in operating class 124 */ 5702 for (i = 0; i < 4; i++) { 5703 params->freq = 5745 + i * 20; 5704 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5705 freq_included(wpa_s, channels, params->freq) && 5706 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5707 goto out; 5708 } 5709 5710 /* try social channel class 180 channel 2 */ 5711 params->freq = 58320 + 1 * 2160; 5712 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5713 freq_included(wpa_s, channels, params->freq) && 5714 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5715 goto out; 5716 5717 /* try all channels in reg. class 180 */ 5718 for (i = 0; i < 4; i++) { 5719 params->freq = 58320 + i * 2160; 5720 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5721 freq_included(wpa_s, channels, params->freq) && 5722 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5723 goto out; 5724 } 5725 5726 params->freq = 0; 5727 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5728 return; 5729out: 5730 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5731 params->freq); 5732} 5733 5734 5735static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5736 struct p2p_go_neg_results *params, 5737 int freq, int vht_center_freq2, int ht40, 5738 int vht, int max_oper_chwidth, 5739 const struct p2p_channels *channels) 5740{ 5741 struct wpa_used_freq_data *freqs; 5742 unsigned int cand; 5743 unsigned int num, i; 5744 int ignore_no_freqs = 0; 5745 5746 os_memset(params, 0, sizeof(*params)); 5747 params->role_go = 1; 5748 params->ht40 = ht40; 5749 params->vht = vht; 5750 params->max_oper_chwidth = max_oper_chwidth; 5751 params->vht_center_freq2 = vht_center_freq2; 5752 5753 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5754 sizeof(struct wpa_used_freq_data)); 5755 if (!freqs) 5756 return -1; 5757 5758 num = get_shared_radio_freqs_data(wpa_s, freqs, 5759 wpa_s->num_multichan_concurrent); 5760 5761 if (wpa_s->current_ssid && 5762 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5763 wpa_s->wpa_state == WPA_COMPLETED) { 5764 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5765 __func__); 5766 5767 /* 5768 * If the frequency selection is done for an active P2P GO that 5769 * is not sharing a frequency, allow to select a new frequency 5770 * even if there are no unused frequencies as we are about to 5771 * move the P2P GO so its frequency can be re-used. 5772 */ 5773 for (i = 0; i < num; i++) { 5774 if (freqs[i].freq == wpa_s->current_ssid->frequency && 5775 freqs[i].flags == 0) { 5776 ignore_no_freqs = 1; 5777 break; 5778 } 5779 } 5780 } 5781 5782 /* try using the forced freq */ 5783 if (freq) { 5784 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) { 5785 wpa_printf(MSG_DEBUG, 5786 "P2P: Forced GO freq %d MHz not accepted", 5787 freq); 5788 goto fail; 5789 } 5790 5791 for (i = 0; i < num; i++) { 5792 if (freqs[i].freq == freq) { 5793 wpa_printf(MSG_DEBUG, 5794 "P2P: forced freq (%d MHz) is also shared", 5795 freq); 5796 params->freq = freq; 5797 goto success; 5798 } 5799 } 5800 5801 if (!ignore_no_freqs && 5802 wpas_p2p_num_unused_channels(wpa_s) <= 0) { 5803 wpa_printf(MSG_DEBUG, 5804 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 5805 freq); 5806 goto fail; 5807 } 5808 5809 wpa_printf(MSG_DEBUG, 5810 "P2P: force GO freq (%d MHz) on a free channel", 5811 freq); 5812 params->freq = freq; 5813 goto success; 5814 } 5815 5816 /* consider using one of the shared frequencies */ 5817 if (num) { 5818 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5819 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5820 wpa_printf(MSG_DEBUG, 5821 "P2P: Use shared freq (%d MHz) for GO", 5822 freq); 5823 params->freq = cand; 5824 goto success; 5825 } 5826 5827 /* try using one of the shared freqs */ 5828 for (i = 0; i < num; i++) { 5829 if (wpas_p2p_supported_freq_go(wpa_s, channels, 5830 freqs[i].freq)) { 5831 wpa_printf(MSG_DEBUG, 5832 "P2P: Use shared freq (%d MHz) for GO", 5833 freq); 5834 params->freq = freqs[i].freq; 5835 goto success; 5836 } 5837 } 5838 } 5839 5840 if (!ignore_no_freqs && 5841 wpas_p2p_num_unused_channels(wpa_s) <= 0) { 5842 wpa_printf(MSG_DEBUG, 5843 "P2P: Cannot force GO on any of the channels we are already using"); 5844 goto fail; 5845 } 5846 5847 /* try using the setting from the configuration file */ 5848 if (wpa_s->conf->p2p_oper_reg_class == 81 && 5849 wpa_s->conf->p2p_oper_channel >= 1 && 5850 wpa_s->conf->p2p_oper_channel <= 11 && 5851 wpas_p2p_supported_freq_go( 5852 wpa_s, channels, 5853 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 5854 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 5855 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5856 "frequency %d MHz", params->freq); 5857 goto success; 5858 } 5859 5860 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 5861 wpa_s->conf->p2p_oper_reg_class == 116 || 5862 wpa_s->conf->p2p_oper_reg_class == 117 || 5863 wpa_s->conf->p2p_oper_reg_class == 124 || 5864 wpa_s->conf->p2p_oper_reg_class == 125 || 5865 wpa_s->conf->p2p_oper_reg_class == 126 || 5866 wpa_s->conf->p2p_oper_reg_class == 127) && 5867 wpas_p2p_supported_freq_go(wpa_s, channels, 5868 5000 + 5869 5 * wpa_s->conf->p2p_oper_channel)) { 5870 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 5871 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5872 "frequency %d MHz", params->freq); 5873 goto success; 5874 } 5875 5876 /* Try using best channels */ 5877 if (wpa_s->conf->p2p_oper_channel == 0 && 5878 wpa_s->best_overall_freq > 0 && 5879 wpas_p2p_supported_freq_go(wpa_s, channels, 5880 wpa_s->best_overall_freq)) { 5881 params->freq = wpa_s->best_overall_freq; 5882 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5883 "channel %d MHz", params->freq); 5884 goto success; 5885 } 5886 5887 if (wpa_s->conf->p2p_oper_channel == 0 && 5888 wpa_s->best_24_freq > 0 && 5889 wpas_p2p_supported_freq_go(wpa_s, channels, 5890 wpa_s->best_24_freq)) { 5891 params->freq = wpa_s->best_24_freq; 5892 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 5893 "channel %d MHz", params->freq); 5894 goto success; 5895 } 5896 5897 if (wpa_s->conf->p2p_oper_channel == 0 && 5898 wpa_s->best_5_freq > 0 && 5899 wpas_p2p_supported_freq_go(wpa_s, channels, 5900 wpa_s->best_5_freq)) { 5901 params->freq = wpa_s->best_5_freq; 5902 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 5903 "channel %d MHz", params->freq); 5904 goto success; 5905 } 5906 5907 /* try using preferred channels */ 5908 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 5909 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5910 params->freq = cand; 5911 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 5912 "channels", params->freq); 5913 goto success; 5914 } 5915 5916 /* Try using one of the group common freqs */ 5917 if (wpa_s->p2p_group_common_freqs) { 5918 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 5919 cand = wpa_s->p2p_group_common_freqs[i]; 5920 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5921 params->freq = cand; 5922 wpa_printf(MSG_DEBUG, 5923 "P2P: Use freq %d MHz common with the peer", 5924 params->freq); 5925 goto success; 5926 } 5927 } 5928 } 5929 5930 /* no preference, select some channel */ 5931 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 5932 5933 if (params->freq == 0) { 5934 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 5935 goto fail; 5936 } 5937 5938success: 5939 os_free(freqs); 5940 return 0; 5941fail: 5942 os_free(freqs); 5943 return -1; 5944} 5945 5946 5947static struct wpa_supplicant * 5948wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 5949 int go) 5950{ 5951 struct wpa_supplicant *group_wpa_s; 5952 5953 if (!wpas_p2p_create_iface(wpa_s)) { 5954 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 5955 "operations"); 5956 wpa_s->p2p_first_connection_timeout = 0; 5957 return wpa_s; 5958 } 5959 5960 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 5961 WPA_IF_P2P_CLIENT) < 0) { 5962 wpa_msg_global(wpa_s, MSG_ERROR, 5963 "P2P: Failed to add group interface"); 5964 return NULL; 5965 } 5966 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 5967 if (group_wpa_s == NULL) { 5968 wpa_msg_global(wpa_s, MSG_ERROR, 5969 "P2P: Failed to initialize group interface"); 5970 wpas_p2p_remove_pending_group_interface(wpa_s); 5971 return NULL; 5972 } 5973 5974 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 5975 group_wpa_s->ifname); 5976 group_wpa_s->p2p_first_connection_timeout = 0; 5977 return group_wpa_s; 5978} 5979 5980 5981/** 5982 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 5983 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5984 * @persistent_group: Whether to create a persistent group 5985 * @freq: Frequency for the group or 0 to indicate no hardcoding 5986 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 5987 * @ht40: Start GO with 40 MHz channel width 5988 * @vht: Start GO with VHT support 5989 * @vht_chwidth: channel bandwidth for GO operating with VHT support 5990 * Returns: 0 on success, -1 on failure 5991 * 5992 * This function creates a new P2P group with the local end as the Group Owner, 5993 * i.e., without using Group Owner Negotiation. 5994 */ 5995int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 5996 int freq, int vht_center_freq2, int ht40, int vht, 5997 int max_oper_chwidth) 5998{ 5999 struct p2p_go_neg_results params; 6000 6001 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6002 return -1; 6003 6004 os_free(wpa_s->global->add_psk); 6005 wpa_s->global->add_psk = NULL; 6006 6007 /* Make sure we are not running find during connection establishment */ 6008 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6009 wpas_p2p_stop_find_oper(wpa_s); 6010 6011 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6012 if (freq < 0) 6013 return -1; 6014 6015 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6016 ht40, vht, max_oper_chwidth, NULL)) 6017 return -1; 6018 if (params.freq && 6019 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 6020 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 6021 ieee80211_is_dfs(params.freq)) { 6022 /* 6023 * If freq is a DFS channel and DFS is offloaded to the 6024 * driver, allow P2P GO to use it. 6025 */ 6026 wpa_printf(MSG_DEBUG, 6027 "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver", 6028 __func__, params.freq); 6029 } else { 6030 wpa_printf(MSG_DEBUG, 6031 "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses", 6032 params.freq); 6033 return -1; 6034 } 6035 } 6036 p2p_go_params(wpa_s->global->p2p, ¶ms); 6037 params.persistent_group = persistent_group; 6038 6039 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6040 if (wpa_s == NULL) 6041 return -1; 6042 wpas_start_wps_go(wpa_s, ¶ms, 0); 6043 6044 return 0; 6045} 6046 6047 6048static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6049 struct wpa_ssid *params, int addr_allocated, 6050 int freq, int force_scan) 6051{ 6052 struct wpa_ssid *ssid; 6053 6054 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6055 if (wpa_s == NULL) 6056 return -1; 6057 if (force_scan) 6058 os_get_reltime(&wpa_s->scan_min_time); 6059 wpa_s->p2p_last_4way_hs_fail = NULL; 6060 6061 wpa_supplicant_ap_deinit(wpa_s); 6062 6063 ssid = wpa_config_add_network(wpa_s->conf); 6064 if (ssid == NULL) 6065 return -1; 6066 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6067 wpa_config_set_network_defaults(ssid); 6068 ssid->temporary = 1; 6069 ssid->proto = WPA_PROTO_RSN; 6070 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 6071 ssid->group_cipher = WPA_CIPHER_CCMP; 6072 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6073 ssid->ssid = os_malloc(params->ssid_len); 6074 if (ssid->ssid == NULL) { 6075 wpa_config_remove_network(wpa_s->conf, ssid->id); 6076 return -1; 6077 } 6078 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6079 ssid->ssid_len = params->ssid_len; 6080 ssid->p2p_group = 1; 6081 ssid->export_keys = 1; 6082 if (params->psk_set) { 6083 os_memcpy(ssid->psk, params->psk, 32); 6084 ssid->psk_set = 1; 6085 } 6086 if (params->passphrase) 6087 ssid->passphrase = os_strdup(params->passphrase); 6088 6089 wpa_s->show_group_started = 1; 6090 wpa_s->p2p_in_invitation = 1; 6091 wpa_s->p2p_invite_go_freq = freq; 6092 wpa_s->p2p_go_group_formation_completed = 0; 6093 wpa_s->global->p2p_group_formation = wpa_s; 6094 6095 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 6096 NULL); 6097 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6098 wpas_p2p_group_formation_timeout, 6099 wpa_s->parent, NULL); 6100 wpa_supplicant_select_network(wpa_s, ssid); 6101 6102 return 0; 6103} 6104 6105 6106int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6107 struct wpa_ssid *ssid, int addr_allocated, 6108 int force_freq, int neg_freq, 6109 int vht_center_freq2, int ht40, 6110 int vht, int max_oper_chwidth, 6111 const struct p2p_channels *channels, 6112 int connection_timeout, int force_scan) 6113{ 6114 struct p2p_go_neg_results params; 6115 int go = 0, freq; 6116 6117 if (ssid->disabled != 2 || ssid->ssid == NULL) 6118 return -1; 6119 6120 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6121 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6122 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6123 "already running"); 6124 if (go == 0 && 6125 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6126 wpa_s->parent, NULL)) { 6127 /* 6128 * This can happen if Invitation Response frame was lost 6129 * and the peer (GO of a persistent group) tries to 6130 * invite us again. Reschedule the timeout to avoid 6131 * terminating the wait for the connection too early 6132 * since we now know that the peer is still trying to 6133 * invite us instead of having already started the GO. 6134 */ 6135 wpa_printf(MSG_DEBUG, 6136 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6137 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6138 wpas_p2p_group_formation_timeout, 6139 wpa_s->parent, NULL); 6140 } 6141 return 0; 6142 } 6143 6144 os_free(wpa_s->global->add_psk); 6145 wpa_s->global->add_psk = NULL; 6146 6147 /* Make sure we are not running find during connection establishment */ 6148 wpas_p2p_stop_find_oper(wpa_s); 6149 6150 wpa_s->p2p_fallback_to_go_neg = 0; 6151 6152 if (ssid->mode == WPAS_MODE_P2P_GO) { 6153 if (force_freq > 0) { 6154 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6155 if (freq < 0) 6156 return -1; 6157 } else { 6158 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6159 if (freq < 0 || 6160 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6161 freq = 0; 6162 } 6163 } else if (ssid->mode == WPAS_MODE_INFRA) { 6164 freq = neg_freq; 6165 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6166 struct os_reltime now; 6167 struct wpa_bss *bss = 6168 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6169 6170 os_get_reltime(&now); 6171 if (bss && 6172 !os_reltime_expired(&now, &bss->last_update, 5) && 6173 freq_included(wpa_s, channels, bss->freq)) 6174 freq = bss->freq; 6175 else 6176 freq = 0; 6177 } 6178 6179 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6180 force_scan); 6181 } else { 6182 return -1; 6183 } 6184 6185 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6186 ht40, vht, max_oper_chwidth, channels)) 6187 return -1; 6188 6189 params.role_go = 1; 6190 params.psk_set = ssid->psk_set; 6191 if (params.psk_set) 6192 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6193 if (ssid->passphrase) { 6194 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6195 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6196 "persistent group"); 6197 return -1; 6198 } 6199 os_strlcpy(params.passphrase, ssid->passphrase, 6200 sizeof(params.passphrase)); 6201 } 6202 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6203 params.ssid_len = ssid->ssid_len; 6204 params.persistent_group = 1; 6205 6206 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6207 if (wpa_s == NULL) 6208 return -1; 6209 6210 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6211 6212 wpa_s->p2p_first_connection_timeout = connection_timeout; 6213 wpas_start_wps_go(wpa_s, ¶ms, 0); 6214 6215 return 0; 6216} 6217 6218 6219static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6220 struct wpabuf *proberesp_ies) 6221{ 6222 struct wpa_supplicant *wpa_s = ctx; 6223 if (wpa_s->ap_iface) { 6224 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6225 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6226 wpabuf_free(beacon_ies); 6227 wpabuf_free(proberesp_ies); 6228 return; 6229 } 6230 if (beacon_ies) { 6231 wpabuf_free(hapd->p2p_beacon_ie); 6232 hapd->p2p_beacon_ie = beacon_ies; 6233 } 6234 wpabuf_free(hapd->p2p_probe_resp_ie); 6235 hapd->p2p_probe_resp_ie = proberesp_ies; 6236 } else { 6237 wpabuf_free(beacon_ies); 6238 wpabuf_free(proberesp_ies); 6239 } 6240 wpa_supplicant_ap_update_beacon(wpa_s); 6241} 6242 6243 6244static void wpas_p2p_idle_update(void *ctx, int idle) 6245{ 6246 struct wpa_supplicant *wpa_s = ctx; 6247 if (!wpa_s->ap_iface) 6248 return; 6249 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6250 if (idle) { 6251 if (wpa_s->global->p2p_fail_on_wps_complete && 6252 wpa_s->p2p_in_provisioning) { 6253 wpas_p2p_grpform_fail_after_wps(wpa_s); 6254 return; 6255 } 6256 wpas_p2p_set_group_idle_timeout(wpa_s); 6257 } else 6258 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6259} 6260 6261 6262struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6263 struct wpa_ssid *ssid) 6264{ 6265 struct p2p_group *group; 6266 struct p2p_group_config *cfg; 6267 6268 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6269 return NULL; 6270 6271 cfg = os_zalloc(sizeof(*cfg)); 6272 if (cfg == NULL) 6273 return NULL; 6274 6275 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6276 cfg->persistent_group = 2; 6277 else if (ssid->p2p_persistent_group) 6278 cfg->persistent_group = 1; 6279 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6280 if (wpa_s->max_stations && 6281 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6282 cfg->max_clients = wpa_s->max_stations; 6283 else 6284 cfg->max_clients = wpa_s->conf->max_num_sta; 6285 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6286 cfg->ssid_len = ssid->ssid_len; 6287 cfg->freq = ssid->frequency; 6288 cfg->cb_ctx = wpa_s; 6289 cfg->ie_update = wpas_p2p_ie_update; 6290 cfg->idle_update = wpas_p2p_idle_update; 6291 6292 group = p2p_group_init(wpa_s->global->p2p, cfg); 6293 if (group == NULL) 6294 os_free(cfg); 6295 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6296 p2p_group_notif_formation_done(group); 6297 wpa_s->p2p_group = group; 6298 return group; 6299} 6300 6301 6302void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6303 int registrar) 6304{ 6305 struct wpa_ssid *ssid = wpa_s->current_ssid; 6306 6307 if (!wpa_s->p2p_in_provisioning) { 6308 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6309 "provisioning not in progress"); 6310 return; 6311 } 6312 6313 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6314 u8 go_dev_addr[ETH_ALEN]; 6315 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6316 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6317 ssid->ssid_len); 6318 /* Clear any stored provisioning info */ 6319 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6320 } 6321 6322 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 6323 NULL); 6324 wpa_s->p2p_go_group_formation_completed = 1; 6325 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6326 /* 6327 * Use a separate timeout for initial data connection to 6328 * complete to allow the group to be removed automatically if 6329 * something goes wrong in this step before the P2P group idle 6330 * timeout mechanism is taken into use. 6331 */ 6332 wpa_dbg(wpa_s, MSG_DEBUG, 6333 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6334 P2P_MAX_INITIAL_CONN_WAIT); 6335 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6336 wpas_p2p_group_formation_timeout, 6337 wpa_s->parent, NULL); 6338 /* Complete group formation on successful data connection. */ 6339 wpa_s->p2p_go_group_formation_completed = 0; 6340 } else if (ssid) { 6341 /* 6342 * Use a separate timeout for initial data connection to 6343 * complete to allow the group to be removed automatically if 6344 * the client does not complete data connection successfully. 6345 */ 6346 wpa_dbg(wpa_s, MSG_DEBUG, 6347 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6348 P2P_MAX_INITIAL_CONN_WAIT_GO); 6349 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6350 wpas_p2p_group_formation_timeout, 6351 wpa_s->parent, NULL); 6352 /* 6353 * Complete group formation on first successful data connection 6354 */ 6355 wpa_s->p2p_go_group_formation_completed = 0; 6356 } 6357 if (wpa_s->global->p2p) 6358 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6359 wpas_group_formation_completed(wpa_s, 1, 0); 6360} 6361 6362 6363void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6364 struct wps_event_fail *fail) 6365{ 6366 if (!wpa_s->p2p_in_provisioning) { 6367 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6368 "provisioning not in progress"); 6369 return; 6370 } 6371 6372 if (wpa_s->go_params) { 6373 p2p_clear_provisioning_info( 6374 wpa_s->global->p2p, 6375 wpa_s->go_params->peer_device_addr); 6376 } 6377 6378 wpas_notify_p2p_wps_failed(wpa_s, fail); 6379 6380 if (wpa_s == wpa_s->global->p2p_group_formation) { 6381 /* 6382 * Allow some time for the failed WPS negotiation exchange to 6383 * complete, but remove the group since group formation cannot 6384 * succeed after provisioning failure. 6385 */ 6386 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6387 wpa_s->global->p2p_fail_on_wps_complete = 1; 6388 eloop_deplete_timeout(0, 50000, 6389 wpas_p2p_group_formation_timeout, 6390 wpa_s->parent, NULL); 6391 } 6392} 6393 6394 6395int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6396{ 6397 if (!wpa_s->global->p2p_fail_on_wps_complete || 6398 !wpa_s->p2p_in_provisioning) 6399 return 0; 6400 6401 wpas_p2p_grpform_fail_after_wps(wpa_s); 6402 6403 return 1; 6404} 6405 6406 6407int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6408 const char *config_method, 6409 enum wpas_p2p_prov_disc_use use, 6410 struct p2ps_provision *p2ps_prov) 6411{ 6412 u16 config_methods; 6413 6414 wpa_s->global->pending_p2ps_group = 0; 6415 wpa_s->global->pending_p2ps_group_freq = 0; 6416 wpa_s->p2p_fallback_to_go_neg = 0; 6417 wpa_s->pending_pd_use = NORMAL_PD; 6418 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6419 p2ps_prov->conncap = p2ps_group_capability( 6420 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6421 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6422 6423 wpa_printf(MSG_DEBUG, 6424 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6425 __func__, p2ps_prov->conncap, 6426 p2ps_prov->adv_id, p2ps_prov->conncap, 6427 p2ps_prov->status, p2ps_prov->info); 6428 6429 config_methods = 0; 6430 } else if (os_strncmp(config_method, "display", 7) == 0) 6431 config_methods = WPS_CONFIG_DISPLAY; 6432 else if (os_strncmp(config_method, "keypad", 6) == 0) 6433 config_methods = WPS_CONFIG_KEYPAD; 6434 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6435 os_strncmp(config_method, "pushbutton", 10) == 0) 6436 config_methods = WPS_CONFIG_PUSHBUTTON; 6437 else { 6438 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6439 os_free(p2ps_prov); 6440 return -1; 6441 } 6442 6443 if (use == WPAS_P2P_PD_AUTO) { 6444 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6445 wpa_s->pending_pd_config_methods = config_methods; 6446 wpa_s->p2p_auto_pd = 1; 6447 wpa_s->p2p_auto_join = 0; 6448 wpa_s->pending_pd_before_join = 0; 6449 wpa_s->auto_pd_scan_retry = 0; 6450 wpas_p2p_stop_find(wpa_s); 6451 wpa_s->p2p_join_scan_count = 0; 6452 os_get_reltime(&wpa_s->p2p_auto_started); 6453 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6454 wpa_s->p2p_auto_started.sec, 6455 wpa_s->p2p_auto_started.usec); 6456 wpas_p2p_join_scan(wpa_s, NULL); 6457 return 0; 6458 } 6459 6460 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6461 os_free(p2ps_prov); 6462 return -1; 6463 } 6464 6465 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6466 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6467 0, 1); 6468} 6469 6470 6471int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6472 char *end) 6473{ 6474 return p2p_scan_result_text(ies, ies_len, buf, end); 6475} 6476 6477 6478static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6479{ 6480 if (!offchannel_pending_action_tx(wpa_s)) 6481 return; 6482 6483 if (wpa_s->p2p_send_action_work) 6484 wpas_p2p_free_send_action_work(wpa_s); 6485 6486 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6487 "operation request"); 6488 offchannel_clear_pending_action_tx(wpa_s); 6489} 6490 6491 6492int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6493 enum p2p_discovery_type type, 6494 unsigned int num_req_dev_types, const u8 *req_dev_types, 6495 const u8 *dev_id, unsigned int search_delay, 6496 u8 seek_cnt, const char **seek_string, int freq) 6497{ 6498 wpas_p2p_clear_pending_action_tx(wpa_s); 6499 wpa_s->p2p_long_listen = 0; 6500 6501 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6502 wpa_s->p2p_in_provisioning) 6503 return -1; 6504 6505 wpa_supplicant_cancel_sched_scan(wpa_s); 6506 6507 return p2p_find(wpa_s->global->p2p, timeout, type, 6508 num_req_dev_types, req_dev_types, dev_id, 6509 search_delay, seek_cnt, seek_string, freq); 6510} 6511 6512 6513static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6514 struct wpa_scan_results *scan_res) 6515{ 6516 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6517 6518 if (wpa_s->p2p_scan_work) { 6519 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6520 wpa_s->p2p_scan_work = NULL; 6521 radio_work_done(work); 6522 } 6523 6524 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6525 return; 6526 6527 /* 6528 * Indicate that results have been processed so that the P2P module can 6529 * continue pending tasks. 6530 */ 6531 p2p_scan_res_handled(wpa_s->global->p2p); 6532} 6533 6534 6535static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6536{ 6537 wpas_p2p_clear_pending_action_tx(wpa_s); 6538 wpa_s->p2p_long_listen = 0; 6539 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6540 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6541 6542 if (wpa_s->global->p2p) 6543 p2p_stop_find(wpa_s->global->p2p); 6544 6545 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6546 wpa_printf(MSG_DEBUG, 6547 "P2P: Do not consider the scan results after stop_find"); 6548 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6549 } 6550} 6551 6552 6553void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6554{ 6555 wpas_p2p_stop_find_oper(wpa_s); 6556 if (!wpa_s->global->pending_group_iface_for_p2ps) 6557 wpas_p2p_remove_pending_group_interface(wpa_s); 6558} 6559 6560 6561static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6562{ 6563 struct wpa_supplicant *wpa_s = eloop_ctx; 6564 wpa_s->p2p_long_listen = 0; 6565} 6566 6567 6568int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6569{ 6570 int res; 6571 6572 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6573 return -1; 6574 6575 wpa_supplicant_cancel_sched_scan(wpa_s); 6576 wpas_p2p_clear_pending_action_tx(wpa_s); 6577 6578 if (timeout == 0) { 6579 /* 6580 * This is a request for unlimited Listen state. However, at 6581 * least for now, this is mapped to a Listen state for one 6582 * hour. 6583 */ 6584 timeout = 3600; 6585 } 6586 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6587 wpa_s->p2p_long_listen = 0; 6588 6589 /* 6590 * Stop previous find/listen operation to avoid trying to request a new 6591 * remain-on-channel operation while the driver is still running the 6592 * previous one. 6593 */ 6594 if (wpa_s->global->p2p) 6595 p2p_stop_find(wpa_s->global->p2p); 6596 6597 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6598 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6599 wpa_s->p2p_long_listen = timeout * 1000; 6600 eloop_register_timeout(timeout, 0, 6601 wpas_p2p_long_listen_timeout, 6602 wpa_s, NULL); 6603 } 6604 6605 return res; 6606} 6607 6608 6609int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6610 u8 *buf, size_t len, int p2p_group) 6611{ 6612 struct wpabuf *p2p_ie; 6613 int ret; 6614 6615 if (wpa_s->global->p2p_disabled) 6616 return -1; 6617 /* 6618 * Advertize mandatory cross connection capability even on 6619 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6620 */ 6621 if (wpa_s->conf->p2p_disabled && p2p_group) 6622 return -1; 6623 if (wpa_s->global->p2p == NULL) 6624 return -1; 6625 if (bss == NULL) 6626 return -1; 6627 6628 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6629 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6630 p2p_group, p2p_ie); 6631 wpabuf_free(p2p_ie); 6632 6633 return ret; 6634} 6635 6636 6637int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6638 const u8 *dst, const u8 *bssid, 6639 const u8 *ie, size_t ie_len, 6640 unsigned int rx_freq, int ssi_signal) 6641{ 6642 if (wpa_s->global->p2p_disabled) 6643 return 0; 6644 if (wpa_s->global->p2p == NULL) 6645 return 0; 6646 6647 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6648 ie, ie_len, rx_freq)) { 6649 case P2P_PREQ_NOT_P2P: 6650 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6651 ssi_signal); 6652 /* fall through */ 6653 case P2P_PREQ_MALFORMED: 6654 case P2P_PREQ_NOT_LISTEN: 6655 case P2P_PREQ_NOT_PROCESSED: 6656 default: /* make gcc happy */ 6657 return 0; 6658 case P2P_PREQ_PROCESSED: 6659 return 1; 6660 } 6661} 6662 6663 6664void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 6665 const u8 *sa, const u8 *bssid, 6666 u8 category, const u8 *data, size_t len, int freq) 6667{ 6668 if (wpa_s->global->p2p_disabled) 6669 return; 6670 if (wpa_s->global->p2p == NULL) 6671 return; 6672 6673 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 6674 freq); 6675} 6676 6677 6678void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 6679{ 6680 if (wpa_s->global->p2p_disabled) 6681 return; 6682 if (wpa_s->global->p2p == NULL) 6683 return; 6684 6685 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 6686} 6687 6688 6689static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 6690{ 6691 p2p_group_deinit(wpa_s->p2p_group); 6692 wpa_s->p2p_group = NULL; 6693 6694 wpa_s->ap_configured_cb = NULL; 6695 wpa_s->ap_configured_cb_ctx = NULL; 6696 wpa_s->ap_configured_cb_data = NULL; 6697 wpa_s->connect_without_scan = NULL; 6698} 6699 6700 6701int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 6702{ 6703 wpa_s->p2p_long_listen = 0; 6704 6705 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6706 return -1; 6707 6708 return p2p_reject(wpa_s->global->p2p, addr); 6709} 6710 6711 6712/* Invite to reinvoke a persistent group */ 6713int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6714 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 6715 int vht_center_freq2, int ht40, int vht, int max_chwidth, 6716 int pref_freq) 6717{ 6718 enum p2p_invite_role role; 6719 u8 *bssid = NULL; 6720 int force_freq = 0; 6721 int res; 6722 int no_pref_freq_given = pref_freq == 0; 6723 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6724 6725 wpa_s->global->p2p_invite_group = NULL; 6726 if (peer_addr) 6727 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 6728 else 6729 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 6730 6731 wpa_s->p2p_persistent_go_freq = freq; 6732 wpa_s->p2p_go_ht40 = !!ht40; 6733 wpa_s->p2p_go_vht = !!vht; 6734 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 6735 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 6736 if (ssid->mode == WPAS_MODE_P2P_GO) { 6737 role = P2P_INVITE_ROLE_GO; 6738 if (peer_addr == NULL) { 6739 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 6740 "address in invitation command"); 6741 return -1; 6742 } 6743 if (wpas_p2p_create_iface(wpa_s)) { 6744 if (wpas_p2p_add_group_interface(wpa_s, 6745 WPA_IF_P2P_GO) < 0) { 6746 wpa_printf(MSG_ERROR, "P2P: Failed to " 6747 "allocate a new interface for the " 6748 "group"); 6749 return -1; 6750 } 6751 bssid = wpa_s->pending_interface_addr; 6752 } else 6753 bssid = wpa_s->own_addr; 6754 } else { 6755 role = P2P_INVITE_ROLE_CLIENT; 6756 peer_addr = ssid->bssid; 6757 } 6758 wpa_s->pending_invite_ssid_id = ssid->id; 6759 6760 size = P2P_MAX_PREF_CHANNELS; 6761 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6762 role == P2P_INVITE_ROLE_GO, 6763 pref_freq_list, &size); 6764 if (res) 6765 return res; 6766 6767 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6768 return -1; 6769 6770 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 6771 6772 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 6773 no_pref_freq_given && pref_freq > 0 && 6774 wpa_s->num_multichan_concurrent > 1 && 6775 wpas_p2p_num_unused_channels(wpa_s) > 0) { 6776 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 6777 pref_freq); 6778 pref_freq = 0; 6779 } 6780 6781 /* 6782 * Stop any find/listen operations before invitation and possibly 6783 * connection establishment. 6784 */ 6785 wpas_p2p_stop_find_oper(wpa_s); 6786 6787 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6788 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 6789 1, pref_freq, -1); 6790} 6791 6792 6793/* Invite to join an active group */ 6794int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 6795 const u8 *peer_addr, const u8 *go_dev_addr) 6796{ 6797 struct wpa_global *global = wpa_s->global; 6798 enum p2p_invite_role role; 6799 u8 *bssid = NULL; 6800 struct wpa_ssid *ssid; 6801 int persistent; 6802 int freq = 0, force_freq = 0, pref_freq = 0; 6803 int res; 6804 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6805 6806 wpa_s->p2p_persistent_go_freq = 0; 6807 wpa_s->p2p_go_ht40 = 0; 6808 wpa_s->p2p_go_vht = 0; 6809 wpa_s->p2p_go_vht_center_freq2 = 0; 6810 wpa_s->p2p_go_max_oper_chwidth = 0; 6811 6812 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 6813 if (os_strcmp(wpa_s->ifname, ifname) == 0) 6814 break; 6815 } 6816 if (wpa_s == NULL) { 6817 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 6818 return -1; 6819 } 6820 6821 ssid = wpa_s->current_ssid; 6822 if (ssid == NULL) { 6823 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 6824 "invitation"); 6825 return -1; 6826 } 6827 6828 wpa_s->global->p2p_invite_group = wpa_s; 6829 persistent = ssid->p2p_persistent_group && 6830 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 6831 ssid->ssid, ssid->ssid_len); 6832 6833 if (ssid->mode == WPAS_MODE_P2P_GO) { 6834 role = P2P_INVITE_ROLE_ACTIVE_GO; 6835 bssid = wpa_s->own_addr; 6836 if (go_dev_addr == NULL) 6837 go_dev_addr = wpa_s->global->p2p_dev_addr; 6838 freq = ssid->frequency; 6839 } else { 6840 role = P2P_INVITE_ROLE_CLIENT; 6841 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 6842 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 6843 "invite to current group"); 6844 return -1; 6845 } 6846 bssid = wpa_s->bssid; 6847 if (go_dev_addr == NULL && 6848 !is_zero_ether_addr(wpa_s->go_dev_addr)) 6849 go_dev_addr = wpa_s->go_dev_addr; 6850 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6851 (int) wpa_s->assoc_freq; 6852 } 6853 wpa_s->parent->pending_invite_ssid_id = -1; 6854 6855 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6856 return -1; 6857 6858 size = P2P_MAX_PREF_CHANNELS; 6859 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6860 role == P2P_INVITE_ROLE_ACTIVE_GO, 6861 pref_freq_list, &size); 6862 if (res) 6863 return res; 6864 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 6865 6866 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6867 ssid->ssid, ssid->ssid_len, force_freq, 6868 go_dev_addr, persistent, pref_freq, -1); 6869} 6870 6871 6872void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 6873{ 6874 struct wpa_ssid *ssid = wpa_s->current_ssid; 6875 u8 go_dev_addr[ETH_ALEN]; 6876 int network_id = -1; 6877 int persistent; 6878 int freq; 6879 u8 ip[3 * 4]; 6880 char ip_addr[100]; 6881 6882 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 6883 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6884 wpa_s->parent, NULL); 6885 } 6886 6887 if (!wpa_s->show_group_started || !ssid) 6888 return; 6889 6890 wpa_s->show_group_started = 0; 6891 if (!wpa_s->p2p_go_group_formation_completed && 6892 wpa_s->global->p2p_group_formation == wpa_s) { 6893 wpa_dbg(wpa_s, MSG_DEBUG, 6894 "P2P: Marking group formation completed on client on data connection"); 6895 wpa_s->p2p_go_group_formation_completed = 1; 6896 wpa_s->global->p2p_group_formation = NULL; 6897 wpa_s->p2p_in_provisioning = 0; 6898 wpa_s->p2p_in_invitation = 0; 6899 } 6900 6901 os_memset(go_dev_addr, 0, ETH_ALEN); 6902 if (ssid->bssid_set) 6903 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 6904 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6905 ssid->ssid_len); 6906 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 6907 6908 if (wpa_s->global->p2p_group_formation == wpa_s) 6909 wpa_s->global->p2p_group_formation = NULL; 6910 6911 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 6912 (int) wpa_s->assoc_freq; 6913 6914 ip_addr[0] = '\0'; 6915 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 6916 int res; 6917 6918 res = os_snprintf(ip_addr, sizeof(ip_addr), 6919 " ip_addr=%u.%u.%u.%u " 6920 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 6921 ip[0], ip[1], ip[2], ip[3], 6922 ip[4], ip[5], ip[6], ip[7], 6923 ip[8], ip[9], ip[10], ip[11]); 6924 if (os_snprintf_error(sizeof(ip_addr), res)) 6925 ip_addr[0] = '\0'; 6926 } 6927 6928 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 6929 ssid->passphrase == NULL && ssid->psk_set ? 6930 ssid->psk : NULL, 6931 ssid->passphrase, go_dev_addr, persistent, 6932 ip_addr); 6933 6934 if (persistent) 6935 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 6936 ssid, go_dev_addr); 6937 if (network_id < 0) 6938 network_id = ssid->id; 6939 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 6940} 6941 6942 6943int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 6944 u32 interval1, u32 duration2, u32 interval2) 6945{ 6946 int ret; 6947 6948 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6949 return -1; 6950 6951 if (wpa_s->wpa_state < WPA_ASSOCIATED || 6952 wpa_s->current_ssid == NULL || 6953 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 6954 return -1; 6955 6956 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 6957 wpa_s->own_addr, wpa_s->assoc_freq, 6958 duration1, interval1, duration2, interval2); 6959 if (ret == 0) 6960 wpa_s->waiting_presence_resp = 1; 6961 6962 return ret; 6963} 6964 6965 6966int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 6967 unsigned int interval) 6968{ 6969 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6970 return -1; 6971 6972 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 6973} 6974 6975 6976static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 6977{ 6978 if (wpa_s->current_ssid == NULL) { 6979 /* 6980 * current_ssid can be cleared when P2P client interface gets 6981 * disconnected, so assume this interface was used as P2P 6982 * client. 6983 */ 6984 return 1; 6985 } 6986 return wpa_s->current_ssid->p2p_group && 6987 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 6988} 6989 6990 6991static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 6992{ 6993 struct wpa_supplicant *wpa_s = eloop_ctx; 6994 6995 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 6996 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 6997 "disabled"); 6998 return; 6999 } 7000 7001 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7002 "group"); 7003 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7004} 7005 7006 7007static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7008{ 7009 int timeout; 7010 7011 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7012 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7013 7014 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7015 return; 7016 7017 timeout = wpa_s->conf->p2p_group_idle; 7018 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7019 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7020 timeout = P2P_MAX_CLIENT_IDLE; 7021 7022 if (timeout == 0) 7023 return; 7024 7025 if (timeout < 0) { 7026 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7027 timeout = 0; /* special client mode no-timeout */ 7028 else 7029 return; 7030 } 7031 7032 if (wpa_s->p2p_in_provisioning) { 7033 /* 7034 * Use the normal group formation timeout during the 7035 * provisioning phase to avoid terminating this process too 7036 * early due to group idle timeout. 7037 */ 7038 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7039 "during provisioning"); 7040 return; 7041 } 7042 7043 if (wpa_s->show_group_started) { 7044 /* 7045 * Use the normal group formation timeout between the end of 7046 * the provisioning phase and completion of 4-way handshake to 7047 * avoid terminating this process too early due to group idle 7048 * timeout. 7049 */ 7050 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7051 "while waiting for initial 4-way handshake to " 7052 "complete"); 7053 return; 7054 } 7055 7056 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7057 timeout); 7058 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7059 wpa_s, NULL); 7060} 7061 7062 7063/* Returns 1 if the interface was removed */ 7064int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7065 u16 reason_code, const u8 *ie, size_t ie_len, 7066 int locally_generated) 7067{ 7068 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7069 return 0; 7070 7071 if (!locally_generated) 7072 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7073 ie_len); 7074 7075 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7076 wpa_s->current_ssid && 7077 wpa_s->current_ssid->p2p_group && 7078 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7079 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7080 "session is ending"); 7081 if (wpas_p2p_group_delete(wpa_s, 7082 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7083 > 0) 7084 return 1; 7085 } 7086 7087 return 0; 7088} 7089 7090 7091void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7092 u16 reason_code, const u8 *ie, size_t ie_len, 7093 int locally_generated) 7094{ 7095 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7096 return; 7097 7098 if (!locally_generated) 7099 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7100 ie_len); 7101} 7102 7103 7104void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7105{ 7106 struct p2p_data *p2p = wpa_s->global->p2p; 7107 7108 if (p2p == NULL) 7109 return; 7110 7111 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7112 return; 7113 7114 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7115 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7116 7117 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7118 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7119 7120 if (wpa_s->wps && 7121 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7122 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7123 7124 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7125 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7126 7127 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7128 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7129 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7130 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7131 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7132 } 7133 7134 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7135 p2p_set_sec_dev_types(p2p, 7136 (void *) wpa_s->conf->sec_device_type, 7137 wpa_s->conf->num_sec_device_types); 7138 7139 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7140 int i; 7141 p2p_remove_wps_vendor_extensions(p2p); 7142 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7143 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7144 continue; 7145 p2p_add_wps_vendor_extension( 7146 p2p, wpa_s->conf->wps_vendor_ext[i]); 7147 } 7148 } 7149 7150 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7151 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7152 char country[3]; 7153 country[0] = wpa_s->conf->country[0]; 7154 country[1] = wpa_s->conf->country[1]; 7155 country[2] = 0x04; 7156 p2p_set_country(p2p, country); 7157 } 7158 7159 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7160 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7161 wpa_s->conf->p2p_ssid_postfix ? 7162 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7163 0); 7164 } 7165 7166 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7167 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7168 7169 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7170 u8 reg_class, channel; 7171 int ret; 7172 unsigned int r; 7173 u8 channel_forced; 7174 7175 if (wpa_s->conf->p2p_listen_reg_class && 7176 wpa_s->conf->p2p_listen_channel) { 7177 reg_class = wpa_s->conf->p2p_listen_reg_class; 7178 channel = wpa_s->conf->p2p_listen_channel; 7179 channel_forced = 1; 7180 } else { 7181 reg_class = 81; 7182 /* 7183 * Pick one of the social channels randomly as the 7184 * listen channel. 7185 */ 7186 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7187 channel = 1; 7188 else 7189 channel = 1 + (r % 3) * 5; 7190 channel_forced = 0; 7191 } 7192 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7193 channel_forced); 7194 if (ret) 7195 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7196 "failed: %d", ret); 7197 } 7198 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7199 u8 op_reg_class, op_channel, cfg_op_channel; 7200 int ret = 0; 7201 unsigned int r; 7202 if (wpa_s->conf->p2p_oper_reg_class && 7203 wpa_s->conf->p2p_oper_channel) { 7204 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7205 op_channel = wpa_s->conf->p2p_oper_channel; 7206 cfg_op_channel = 1; 7207 } else { 7208 op_reg_class = 81; 7209 /* 7210 * Use random operation channel from (1, 6, 11) 7211 *if no other preference is indicated. 7212 */ 7213 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7214 op_channel = 1; 7215 else 7216 op_channel = 1 + (r % 3) * 5; 7217 cfg_op_channel = 0; 7218 } 7219 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7220 cfg_op_channel); 7221 if (ret) 7222 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7223 "failed: %d", ret); 7224 } 7225 7226 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7227 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7228 wpa_s->conf->p2p_pref_chan) < 0) { 7229 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7230 "update failed"); 7231 } 7232 7233 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7234 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7235 "update failed"); 7236 } 7237 } 7238 7239 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7240 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7241} 7242 7243 7244int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7245 int duration) 7246{ 7247 if (!wpa_s->ap_iface) 7248 return -1; 7249 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7250 duration); 7251} 7252 7253 7254int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7255{ 7256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7257 return -1; 7258 7259 wpa_s->global->cross_connection = enabled; 7260 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7261 7262 if (!enabled) { 7263 struct wpa_supplicant *iface; 7264 7265 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7266 { 7267 if (iface->cross_connect_enabled == 0) 7268 continue; 7269 7270 iface->cross_connect_enabled = 0; 7271 iface->cross_connect_in_use = 0; 7272 wpa_msg_global(iface->parent, MSG_INFO, 7273 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7274 iface->ifname, 7275 iface->cross_connect_uplink); 7276 } 7277 } 7278 7279 return 0; 7280} 7281 7282 7283static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7284{ 7285 struct wpa_supplicant *iface; 7286 7287 if (!uplink->global->cross_connection) 7288 return; 7289 7290 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7291 if (!iface->cross_connect_enabled) 7292 continue; 7293 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7294 0) 7295 continue; 7296 if (iface->ap_iface == NULL) 7297 continue; 7298 if (iface->cross_connect_in_use) 7299 continue; 7300 7301 iface->cross_connect_in_use = 1; 7302 wpa_msg_global(iface->parent, MSG_INFO, 7303 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7304 iface->ifname, iface->cross_connect_uplink); 7305 } 7306} 7307 7308 7309static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7310{ 7311 struct wpa_supplicant *iface; 7312 7313 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7314 if (!iface->cross_connect_enabled) 7315 continue; 7316 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7317 0) 7318 continue; 7319 if (!iface->cross_connect_in_use) 7320 continue; 7321 7322 wpa_msg_global(iface->parent, MSG_INFO, 7323 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7324 iface->ifname, iface->cross_connect_uplink); 7325 iface->cross_connect_in_use = 0; 7326 } 7327} 7328 7329 7330void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7331{ 7332 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7333 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7334 wpa_s->cross_connect_disallowed) 7335 wpas_p2p_disable_cross_connect(wpa_s); 7336 else 7337 wpas_p2p_enable_cross_connect(wpa_s); 7338 if (!wpa_s->ap_iface && 7339 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7340 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7341} 7342 7343 7344void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7345{ 7346 wpas_p2p_disable_cross_connect(wpa_s); 7347 if (!wpa_s->ap_iface && 7348 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7349 wpa_s, NULL)) 7350 wpas_p2p_set_group_idle_timeout(wpa_s); 7351} 7352 7353 7354static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7355{ 7356 struct wpa_supplicant *iface; 7357 7358 if (!wpa_s->global->cross_connection) 7359 return; 7360 7361 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7362 if (iface == wpa_s) 7363 continue; 7364 if (iface->drv_flags & 7365 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7366 continue; 7367 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7368 iface != wpa_s->parent) 7369 continue; 7370 7371 wpa_s->cross_connect_enabled = 1; 7372 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7373 sizeof(wpa_s->cross_connect_uplink)); 7374 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7375 "%s to %s whenever uplink is available", 7376 wpa_s->ifname, wpa_s->cross_connect_uplink); 7377 7378 if (iface->ap_iface || iface->current_ssid == NULL || 7379 iface->current_ssid->mode != WPAS_MODE_INFRA || 7380 iface->cross_connect_disallowed || 7381 iface->wpa_state != WPA_COMPLETED) 7382 break; 7383 7384 wpa_s->cross_connect_in_use = 1; 7385 wpa_msg_global(wpa_s->parent, MSG_INFO, 7386 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7387 wpa_s->ifname, wpa_s->cross_connect_uplink); 7388 break; 7389 } 7390} 7391 7392 7393int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7394{ 7395 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7396 !wpa_s->p2p_in_provisioning) 7397 return 0; /* not P2P client operation */ 7398 7399 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7400 "session overlap"); 7401 if (wpa_s != wpa_s->parent) 7402 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 7403 wpas_p2p_group_formation_failed(wpa_s, 0); 7404 return 1; 7405} 7406 7407 7408void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7409{ 7410 struct wpa_supplicant *wpa_s = eloop_ctx; 7411 wpas_p2p_notif_pbc_overlap(wpa_s); 7412} 7413 7414 7415void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7416 enum wpas_p2p_channel_update_trig trig) 7417{ 7418 struct p2p_channels chan, cli_chan; 7419 struct wpa_used_freq_data *freqs = NULL; 7420 unsigned int num = wpa_s->num_multichan_concurrent; 7421 7422 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7423 return; 7424 7425 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7426 if (!freqs) 7427 return; 7428 7429 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7430 7431 os_memset(&chan, 0, sizeof(chan)); 7432 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7433 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7434 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7435 "channel list"); 7436 return; 7437 } 7438 7439 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7440 7441 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7442 7443 /* 7444 * The used frequencies map changed, so it is possible that a GO is 7445 * using a channel that is no longer valid for P2P use. It is also 7446 * possible that due to policy consideration, it would be preferable to 7447 * move it to a frequency already used by other station interfaces. 7448 */ 7449 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7450 7451 os_free(freqs); 7452} 7453 7454 7455static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7456 struct wpa_scan_results *scan_res) 7457{ 7458 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7459} 7460 7461 7462int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7463{ 7464 struct wpa_global *global = wpa_s->global; 7465 int found = 0; 7466 const u8 *peer; 7467 7468 if (global->p2p == NULL) 7469 return -1; 7470 7471 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7472 7473 if (wpa_s->pending_interface_name[0] && 7474 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7475 found = 1; 7476 7477 peer = p2p_get_go_neg_peer(global->p2p); 7478 if (peer) { 7479 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7480 MACSTR, MAC2STR(peer)); 7481 p2p_unauthorize(global->p2p, peer); 7482 found = 1; 7483 } 7484 7485 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7486 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7487 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7488 found = 1; 7489 } 7490 7491 if (wpa_s->pending_pd_before_join) { 7492 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7493 wpa_s->pending_pd_before_join = 0; 7494 found = 1; 7495 } 7496 7497 wpas_p2p_stop_find(wpa_s); 7498 7499 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7500 if (wpa_s == global->p2p_group_formation && 7501 (wpa_s->p2p_in_provisioning || 7502 wpa_s->parent->pending_interface_type == 7503 WPA_IF_P2P_CLIENT)) { 7504 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7505 "formation found - cancelling", 7506 wpa_s->ifname); 7507 found = 1; 7508 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7509 wpa_s->parent, NULL); 7510 if (wpa_s->p2p_in_provisioning) { 7511 wpas_group_formation_completed(wpa_s, 0, 0); 7512 break; 7513 } 7514 wpas_p2p_group_delete(wpa_s, 7515 P2P_GROUP_REMOVAL_REQUESTED); 7516 break; 7517 } else if (wpa_s->p2p_in_invitation) { 7518 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7519 wpa_s->ifname); 7520 found = 1; 7521 wpas_p2p_group_formation_failed(wpa_s, 0); 7522 break; 7523 } 7524 } 7525 7526 if (!found) { 7527 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7528 return -1; 7529 } 7530 7531 return 0; 7532} 7533 7534 7535void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7536{ 7537 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7538 return; 7539 7540 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7541 "being available anymore"); 7542 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7543} 7544 7545 7546void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7547 int freq_24, int freq_5, int freq_overall) 7548{ 7549 struct p2p_data *p2p = wpa_s->global->p2p; 7550 if (p2p == NULL) 7551 return; 7552 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7553} 7554 7555 7556int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7557{ 7558 u8 peer[ETH_ALEN]; 7559 struct p2p_data *p2p = wpa_s->global->p2p; 7560 7561 if (p2p == NULL) 7562 return -1; 7563 7564 if (hwaddr_aton(addr, peer)) 7565 return -1; 7566 7567 return p2p_unauthorize(p2p, peer); 7568} 7569 7570 7571/** 7572 * wpas_p2p_disconnect - Disconnect from a P2P Group 7573 * @wpa_s: Pointer to wpa_supplicant data 7574 * Returns: 0 on success, -1 on failure 7575 * 7576 * This can be used to disconnect from a group in which the local end is a P2P 7577 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7578 * virtual network interface was created for this group, that interface will be 7579 * removed. Otherwise, only the configured P2P group network will be removed 7580 * from the interface. 7581 */ 7582int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7583{ 7584 7585 if (wpa_s == NULL) 7586 return -1; 7587 7588 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7589 -1 : 0; 7590} 7591 7592 7593int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7594{ 7595 int ret; 7596 7597 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7598 return 0; 7599 7600 ret = p2p_in_progress(wpa_s->global->p2p); 7601 if (ret == 0) { 7602 /* 7603 * Check whether there is an ongoing WPS provisioning step (or 7604 * other parts of group formation) on another interface since 7605 * p2p_in_progress() does not report this to avoid issues for 7606 * scans during such provisioning step. 7607 */ 7608 if (wpa_s->global->p2p_group_formation && 7609 wpa_s->global->p2p_group_formation != wpa_s) { 7610 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7611 "in group formation", 7612 wpa_s->global->p2p_group_formation->ifname); 7613 ret = 1; 7614 } 7615 } 7616 7617 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7618 struct os_reltime now; 7619 os_get_reltime(&now); 7620 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7621 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7622 /* Wait for the first client has expired */ 7623 wpa_s->global->p2p_go_wait_client.sec = 0; 7624 } else { 7625 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7626 ret = 1; 7627 } 7628 } 7629 7630 return ret; 7631} 7632 7633 7634void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7635 struct wpa_ssid *ssid) 7636{ 7637 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7638 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7639 wpa_s->parent, NULL) > 0) { 7640 /** 7641 * Remove the network by scheduling the group formation 7642 * timeout to happen immediately. The teardown code 7643 * needs to be scheduled to run asynch later so that we 7644 * don't delete data from under ourselves unexpectedly. 7645 * Calling wpas_p2p_group_formation_timeout directly 7646 * causes a series of crashes in WPS failure scenarios. 7647 */ 7648 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7649 "P2P group network getting removed"); 7650 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7651 wpa_s->parent, NULL); 7652 } 7653} 7654 7655 7656struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 7657 const u8 *addr, const u8 *ssid, 7658 size_t ssid_len) 7659{ 7660 struct wpa_ssid *s; 7661 size_t i; 7662 7663 for (s = wpa_s->conf->ssid; s; s = s->next) { 7664 if (s->disabled != 2) 7665 continue; 7666 if (ssid && 7667 (ssid_len != s->ssid_len || 7668 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 7669 continue; 7670 if (addr == NULL) { 7671 if (s->mode == WPAS_MODE_P2P_GO) 7672 return s; 7673 continue; 7674 } 7675 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 7676 return s; /* peer is GO in the persistent group */ 7677 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 7678 continue; 7679 for (i = 0; i < s->num_p2p_clients; i++) { 7680 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 7681 addr, ETH_ALEN) == 0) 7682 return s; /* peer is P2P client in persistent 7683 * group */ 7684 } 7685 } 7686 7687 return NULL; 7688} 7689 7690 7691void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 7692 const u8 *addr) 7693{ 7694 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7695 wpa_s->parent, NULL) > 0) { 7696 /* 7697 * This can happen if WPS provisioning step is not terminated 7698 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 7699 * peer was able to connect, there is no need to time out group 7700 * formation after this, though. In addition, this is used with 7701 * the initial connection wait on the GO as a separate formation 7702 * timeout and as such, expected to be hit after the initial WPS 7703 * provisioning step. 7704 */ 7705 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 7706 7707 if (!wpa_s->p2p_go_group_formation_completed && 7708 !wpa_s->group_formation_reported) { 7709 /* 7710 * GO has not yet notified group formation success since 7711 * the WPS step was not completed cleanly. Do that 7712 * notification now since the P2P Client was able to 7713 * connect and as such, must have received the 7714 * credential from the WPS step. 7715 */ 7716 if (wpa_s->global->p2p) 7717 p2p_wps_success_cb(wpa_s->global->p2p, addr); 7718 wpas_group_formation_completed(wpa_s, 1, 0); 7719 } 7720 } 7721 if (!wpa_s->p2p_go_group_formation_completed) { 7722 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 7723 wpa_s->p2p_go_group_formation_completed = 1; 7724 wpa_s->global->p2p_group_formation = NULL; 7725 wpa_s->p2p_in_provisioning = 0; 7726 wpa_s->p2p_in_invitation = 0; 7727 } 7728 wpa_s->global->p2p_go_wait_client.sec = 0; 7729 if (addr == NULL) 7730 return; 7731 wpas_p2p_add_persistent_group_client(wpa_s, addr); 7732} 7733 7734 7735static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 7736 int group_added) 7737{ 7738 struct wpa_supplicant *group = wpa_s; 7739 int ret = 0; 7740 7741 if (wpa_s->global->p2p_group_formation) 7742 group = wpa_s->global->p2p_group_formation; 7743 wpa_s = wpa_s->global->p2p_init_wpa_s; 7744 offchannel_send_action_done(wpa_s); 7745 if (group_added) 7746 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 7747 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 7748 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 7749 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 7750 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 7751 wpa_s->p2p_go_vht_center_freq2, 7752 wpa_s->p2p_persistent_id, 7753 wpa_s->p2p_pd_before_go_neg, 7754 wpa_s->p2p_go_ht40, 7755 wpa_s->p2p_go_vht, 7756 wpa_s->p2p_go_max_oper_chwidth); 7757 return ret; 7758} 7759 7760 7761int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 7762{ 7763 int res; 7764 7765 if (!wpa_s->p2p_fallback_to_go_neg || 7766 wpa_s->p2p_in_provisioning <= 5) 7767 return 0; 7768 7769 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 7770 return 0; /* peer operating as a GO */ 7771 7772 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 7773 "fallback to GO Negotiation"); 7774 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 7775 "reason=GO-not-found"); 7776 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 7777 7778 return res == 1 ? 2 : 1; 7779} 7780 7781 7782unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 7783{ 7784 struct wpa_supplicant *ifs; 7785 7786 if (wpa_s->wpa_state > WPA_SCANNING) { 7787 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 7788 "concurrent operation", 7789 wpa_s->conf->p2p_search_delay); 7790 return wpa_s->conf->p2p_search_delay; 7791 } 7792 7793 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 7794 radio_list) { 7795 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 7796 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 7797 "delay due to concurrent operation on " 7798 "interface %s", 7799 wpa_s->conf->p2p_search_delay, 7800 ifs->ifname); 7801 return wpa_s->conf->p2p_search_delay; 7802 } 7803 } 7804 7805 return 0; 7806} 7807 7808 7809static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 7810 struct wpa_ssid *s, const u8 *addr, 7811 int iface_addr) 7812{ 7813 struct psk_list_entry *psk, *tmp; 7814 int changed = 0; 7815 7816 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 7817 list) { 7818 if ((iface_addr && !psk->p2p && 7819 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 7820 (!iface_addr && psk->p2p && 7821 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 7822 wpa_dbg(wpa_s, MSG_DEBUG, 7823 "P2P: Remove persistent group PSK list entry for " 7824 MACSTR " p2p=%u", 7825 MAC2STR(psk->addr), psk->p2p); 7826 dl_list_del(&psk->list); 7827 os_free(psk); 7828 changed++; 7829 } 7830 } 7831 7832 return changed; 7833} 7834 7835 7836void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 7837 const u8 *p2p_dev_addr, 7838 const u8 *psk, size_t psk_len) 7839{ 7840 struct wpa_ssid *ssid = wpa_s->current_ssid; 7841 struct wpa_ssid *persistent; 7842 struct psk_list_entry *p, *last; 7843 7844 if (psk_len != sizeof(p->psk)) 7845 return; 7846 7847 if (p2p_dev_addr) { 7848 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 7849 " p2p_dev_addr=" MACSTR, 7850 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 7851 if (is_zero_ether_addr(p2p_dev_addr)) 7852 p2p_dev_addr = NULL; 7853 } else { 7854 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 7855 MAC2STR(mac_addr)); 7856 } 7857 7858 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 7859 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 7860 /* To be added to persistent group once created */ 7861 if (wpa_s->global->add_psk == NULL) { 7862 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 7863 if (wpa_s->global->add_psk == NULL) 7864 return; 7865 } 7866 p = wpa_s->global->add_psk; 7867 if (p2p_dev_addr) { 7868 p->p2p = 1; 7869 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7870 } else { 7871 p->p2p = 0; 7872 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7873 } 7874 os_memcpy(p->psk, psk, psk_len); 7875 return; 7876 } 7877 7878 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 7879 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 7880 return; 7881 } 7882 7883 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 7884 ssid->ssid_len); 7885 if (!persistent) { 7886 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 7887 return; 7888 } 7889 7890 p = os_zalloc(sizeof(*p)); 7891 if (p == NULL) 7892 return; 7893 if (p2p_dev_addr) { 7894 p->p2p = 1; 7895 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 7896 } else { 7897 p->p2p = 0; 7898 os_memcpy(p->addr, mac_addr, ETH_ALEN); 7899 } 7900 os_memcpy(p->psk, psk, psk_len); 7901 7902 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 7903 (last = dl_list_last(&persistent->psk_list, 7904 struct psk_list_entry, list))) { 7905 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 7906 MACSTR " (p2p=%u) to make room for a new one", 7907 MAC2STR(last->addr), last->p2p); 7908 dl_list_del(&last->list); 7909 os_free(last); 7910 } 7911 7912 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent, 7913 p2p_dev_addr ? p2p_dev_addr : mac_addr, 7914 p2p_dev_addr == NULL); 7915 if (p2p_dev_addr) { 7916 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 7917 MACSTR, MAC2STR(p2p_dev_addr)); 7918 } else { 7919 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 7920 MAC2STR(mac_addr)); 7921 } 7922 dl_list_add(&persistent->psk_list, &p->list); 7923 7924 if (wpa_s->parent->conf->update_config && 7925 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 7926 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 7927} 7928 7929 7930static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 7931 struct wpa_ssid *s, const u8 *addr, 7932 int iface_addr) 7933{ 7934 int res; 7935 7936 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 7937 if (res > 0 && wpa_s->conf->update_config && 7938 wpa_config_write(wpa_s->confname, wpa_s->conf)) 7939 wpa_dbg(wpa_s, MSG_DEBUG, 7940 "P2P: Failed to update configuration"); 7941} 7942 7943 7944static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 7945 const u8 *peer, int iface_addr) 7946{ 7947 struct hostapd_data *hapd; 7948 struct hostapd_wpa_psk *psk, *prev, *rem; 7949 struct sta_info *sta; 7950 7951 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 7952 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 7953 return; 7954 7955 /* Remove per-station PSK entry */ 7956 hapd = wpa_s->ap_iface->bss[0]; 7957 prev = NULL; 7958 psk = hapd->conf->ssid.wpa_psk; 7959 while (psk) { 7960 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 7961 (!iface_addr && 7962 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 7963 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 7964 MACSTR " iface_addr=%d", 7965 MAC2STR(peer), iface_addr); 7966 if (prev) 7967 prev->next = psk->next; 7968 else 7969 hapd->conf->ssid.wpa_psk = psk->next; 7970 rem = psk; 7971 psk = psk->next; 7972 os_free(rem); 7973 } else { 7974 prev = psk; 7975 psk = psk->next; 7976 } 7977 } 7978 7979 /* Disconnect from group */ 7980 if (iface_addr) 7981 sta = ap_get_sta(hapd, peer); 7982 else 7983 sta = ap_get_sta_p2p(hapd, peer); 7984 if (sta) { 7985 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 7986 " (iface_addr=%d) from group", 7987 MAC2STR(peer), iface_addr); 7988 hostapd_drv_sta_deauth(hapd, sta->addr, 7989 WLAN_REASON_DEAUTH_LEAVING); 7990 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 7991 } 7992} 7993 7994 7995void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 7996 int iface_addr) 7997{ 7998 struct wpa_ssid *s; 7999 struct wpa_supplicant *w; 8000 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8001 8002 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8003 8004 /* Remove from any persistent group */ 8005 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8006 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8007 continue; 8008 if (!iface_addr) 8009 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8010 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8011 } 8012 8013 /* Remove from any operating group */ 8014 for (w = wpa_s->global->ifaces; w; w = w->next) 8015 wpas_p2p_remove_client_go(w, peer, iface_addr); 8016} 8017 8018 8019static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8020{ 8021 struct wpa_supplicant *wpa_s = eloop_ctx; 8022 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8023} 8024 8025 8026static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8027{ 8028 struct wpa_supplicant *wpa_s = eloop_ctx; 8029 8030 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8031 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8032} 8033 8034 8035int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8036 struct wpa_ssid *ssid) 8037{ 8038 struct wpa_supplicant *iface; 8039 8040 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8041 if (!iface->current_ssid || 8042 iface->current_ssid->frequency == freq || 8043 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8044 !iface->current_ssid->p2p_group)) 8045 continue; 8046 8047 /* Remove the connection with least priority */ 8048 if (!wpas_is_p2p_prioritized(iface)) { 8049 /* STA connection has priority over existing 8050 * P2P connection, so remove the interface. */ 8051 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8052 eloop_register_timeout(0, 0, 8053 wpas_p2p_group_freq_conflict, 8054 iface, NULL); 8055 /* If connection in progress is P2P connection, do not 8056 * proceed for the connection. */ 8057 if (wpa_s == iface) 8058 return -1; 8059 else 8060 return 0; 8061 } else { 8062 /* P2P connection has priority, disable the STA network 8063 */ 8064 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8065 ssid); 8066 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8067 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8068 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8069 ETH_ALEN); 8070 /* If P2P connection is in progress, continue 8071 * connecting...*/ 8072 if (wpa_s == iface) 8073 return 0; 8074 else 8075 return -1; 8076 } 8077 } 8078 8079 return 0; 8080} 8081 8082 8083int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8084{ 8085 struct wpa_ssid *ssid = wpa_s->current_ssid; 8086 8087 if (ssid == NULL || !ssid->p2p_group) 8088 return 0; 8089 8090 if (wpa_s->p2p_last_4way_hs_fail && 8091 wpa_s->p2p_last_4way_hs_fail == ssid) { 8092 u8 go_dev_addr[ETH_ALEN]; 8093 struct wpa_ssid *persistent; 8094 8095 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8096 ssid->ssid, 8097 ssid->ssid_len) <= 0) { 8098 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8099 goto disconnect; 8100 } 8101 8102 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8103 MACSTR, MAC2STR(go_dev_addr)); 8104 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr, 8105 ssid->ssid, 8106 ssid->ssid_len); 8107 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8108 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8109 goto disconnect; 8110 } 8111 wpa_msg_global(wpa_s->parent, MSG_INFO, 8112 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8113 persistent->id); 8114 disconnect: 8115 wpa_s->p2p_last_4way_hs_fail = NULL; 8116 /* 8117 * Remove the group from a timeout to avoid issues with caller 8118 * continuing to use the interface if this is on a P2P group 8119 * interface. 8120 */ 8121 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8122 wpa_s, NULL); 8123 return 1; 8124 } 8125 8126 wpa_s->p2p_last_4way_hs_fail = ssid; 8127 return 0; 8128} 8129 8130 8131#ifdef CONFIG_WPS_NFC 8132 8133static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8134 struct wpabuf *p2p) 8135{ 8136 struct wpabuf *ret; 8137 size_t wsc_len; 8138 8139 if (p2p == NULL) { 8140 wpabuf_free(wsc); 8141 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8142 return NULL; 8143 } 8144 8145 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8146 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8147 if (ret == NULL) { 8148 wpabuf_free(wsc); 8149 wpabuf_free(p2p); 8150 return NULL; 8151 } 8152 8153 wpabuf_put_be16(ret, wsc_len); 8154 if (wsc) 8155 wpabuf_put_buf(ret, wsc); 8156 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8157 wpabuf_put_buf(ret, p2p); 8158 8159 wpabuf_free(wsc); 8160 wpabuf_free(p2p); 8161 wpa_hexdump_buf(MSG_DEBUG, 8162 "P2P: Generated NFC connection handover message", ret); 8163 8164 if (ndef && ret) { 8165 struct wpabuf *tmp; 8166 tmp = ndef_build_p2p(ret); 8167 wpabuf_free(ret); 8168 if (tmp == NULL) { 8169 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8170 return NULL; 8171 } 8172 ret = tmp; 8173 } 8174 8175 return ret; 8176} 8177 8178 8179static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8180 struct wpa_ssid **ssid, u8 *go_dev_addr) 8181{ 8182 struct wpa_supplicant *iface; 8183 8184 if (go_dev_addr) 8185 os_memset(go_dev_addr, 0, ETH_ALEN); 8186 if (ssid) 8187 *ssid = NULL; 8188 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8189 if (iface->wpa_state < WPA_ASSOCIATING || 8190 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8191 !iface->current_ssid->p2p_group || 8192 iface->current_ssid->mode != WPAS_MODE_INFRA) 8193 continue; 8194 if (ssid) 8195 *ssid = iface->current_ssid; 8196 if (go_dev_addr) 8197 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8198 return iface->assoc_freq; 8199 } 8200 return 0; 8201} 8202 8203 8204struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8205 int ndef) 8206{ 8207 struct wpabuf *wsc, *p2p; 8208 struct wpa_ssid *ssid; 8209 u8 go_dev_addr[ETH_ALEN]; 8210 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8211 8212 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8213 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8214 return NULL; 8215 } 8216 8217 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8218 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8219 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8220 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8221 return NULL; 8222 } 8223 8224 if (cli_freq == 0) { 8225 wsc = wps_build_nfc_handover_req_p2p( 8226 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8227 } else 8228 wsc = NULL; 8229 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8230 go_dev_addr, ssid ? ssid->ssid : NULL, 8231 ssid ? ssid->ssid_len : 0); 8232 8233 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8234} 8235 8236 8237struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8238 int ndef, int tag) 8239{ 8240 struct wpabuf *wsc, *p2p; 8241 struct wpa_ssid *ssid; 8242 u8 go_dev_addr[ETH_ALEN]; 8243 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8244 8245 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8246 return NULL; 8247 8248 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8249 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8250 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8251 return NULL; 8252 8253 if (cli_freq == 0) { 8254 wsc = wps_build_nfc_handover_sel_p2p( 8255 wpa_s->parent->wps, 8256 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8257 DEV_PW_NFC_CONNECTION_HANDOVER, 8258 wpa_s->conf->wps_nfc_dh_pubkey, 8259 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8260 } else 8261 wsc = NULL; 8262 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8263 go_dev_addr, ssid ? ssid->ssid : NULL, 8264 ssid ? ssid->ssid_len : 0); 8265 8266 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8267} 8268 8269 8270static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8271 struct p2p_nfc_params *params) 8272{ 8273 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8274 "connection handover (freq=%d)", 8275 params->go_freq); 8276 8277 if (params->go_freq && params->go_ssid_len) { 8278 wpa_s->p2p_wps_method = WPS_NFC; 8279 wpa_s->pending_join_wps_method = WPS_NFC; 8280 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8281 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8282 ETH_ALEN); 8283 return wpas_p2p_join_start(wpa_s, params->go_freq, 8284 params->go_ssid, 8285 params->go_ssid_len); 8286 } 8287 8288 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8289 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8290 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8291 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth); 8292} 8293 8294 8295static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8296 struct p2p_nfc_params *params, int tag) 8297{ 8298 int res, persistent; 8299 struct wpa_ssid *ssid; 8300 8301 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8302 "connection handover"); 8303 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8304 ssid = wpa_s->current_ssid; 8305 if (ssid == NULL) 8306 continue; 8307 if (ssid->mode != WPAS_MODE_P2P_GO) 8308 continue; 8309 if (wpa_s->ap_iface == NULL) 8310 continue; 8311 break; 8312 } 8313 if (wpa_s == NULL) { 8314 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8315 return -1; 8316 } 8317 8318 if (wpa_s->parent->p2p_oob_dev_pw_id != 8319 DEV_PW_NFC_CONNECTION_HANDOVER && 8320 !wpa_s->parent->p2p_oob_dev_pw) { 8321 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8322 return -1; 8323 } 8324 res = wpas_ap_wps_add_nfc_pw( 8325 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 8326 wpa_s->parent->p2p_oob_dev_pw, 8327 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 8328 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 8329 if (res) 8330 return res; 8331 8332 if (!tag) { 8333 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8334 return 0; 8335 } 8336 8337 if (!params->peer || 8338 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8339 return 0; 8340 8341 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8342 " to join", MAC2STR(params->peer->p2p_device_addr)); 8343 8344 wpa_s->global->p2p_invite_group = wpa_s; 8345 persistent = ssid->p2p_persistent_group && 8346 wpas_p2p_get_persistent(wpa_s->parent, 8347 params->peer->p2p_device_addr, 8348 ssid->ssid, ssid->ssid_len); 8349 wpa_s->parent->pending_invite_ssid_id = -1; 8350 8351 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8352 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8353 ssid->ssid, ssid->ssid_len, ssid->frequency, 8354 wpa_s->global->p2p_dev_addr, persistent, 0, 8355 wpa_s->parent->p2p_oob_dev_pw_id); 8356} 8357 8358 8359static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8360 struct p2p_nfc_params *params, 8361 int forced_freq) 8362{ 8363 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8364 "connection handover"); 8365 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8366 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8367 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8368 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth); 8369} 8370 8371 8372static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8373 struct p2p_nfc_params *params, 8374 int forced_freq) 8375{ 8376 int res; 8377 8378 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8379 "connection handover"); 8380 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8381 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8382 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8383 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth); 8384 if (res) 8385 return res; 8386 8387 res = wpas_p2p_listen(wpa_s, 60); 8388 if (res) { 8389 p2p_unauthorize(wpa_s->global->p2p, 8390 params->peer->p2p_device_addr); 8391 } 8392 8393 return res; 8394} 8395 8396 8397static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8398 const struct wpabuf *data, 8399 int sel, int tag, int forced_freq) 8400{ 8401 const u8 *pos, *end; 8402 u16 len, id; 8403 struct p2p_nfc_params params; 8404 int res; 8405 8406 os_memset(¶ms, 0, sizeof(params)); 8407 params.sel = sel; 8408 8409 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8410 8411 pos = wpabuf_head(data); 8412 end = pos + wpabuf_len(data); 8413 8414 if (end - pos < 2) { 8415 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8416 "attributes"); 8417 return -1; 8418 } 8419 len = WPA_GET_BE16(pos); 8420 pos += 2; 8421 if (len > end - pos) { 8422 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8423 "attributes"); 8424 return -1; 8425 } 8426 params.wsc_attr = pos; 8427 params.wsc_len = len; 8428 pos += len; 8429 8430 if (end - pos < 2) { 8431 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8432 "attributes"); 8433 return -1; 8434 } 8435 len = WPA_GET_BE16(pos); 8436 pos += 2; 8437 if (len > end - pos) { 8438 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8439 "attributes"); 8440 return -1; 8441 } 8442 params.p2p_attr = pos; 8443 params.p2p_len = len; 8444 pos += len; 8445 8446 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8447 params.wsc_attr, params.wsc_len); 8448 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8449 params.p2p_attr, params.p2p_len); 8450 if (pos < end) { 8451 wpa_hexdump(MSG_DEBUG, 8452 "P2P: Ignored extra data after P2P attributes", 8453 pos, end - pos); 8454 } 8455 8456 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8457 if (res) 8458 return res; 8459 8460 if (params.next_step == NO_ACTION) 8461 return 0; 8462 8463 if (params.next_step == BOTH_GO) { 8464 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8465 MAC2STR(params.peer->p2p_device_addr)); 8466 return 0; 8467 } 8468 8469 if (params.next_step == PEER_CLIENT) { 8470 if (!is_zero_ether_addr(params.go_dev_addr)) { 8471 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8472 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8473 " ssid=\"%s\"", 8474 MAC2STR(params.peer->p2p_device_addr), 8475 params.go_freq, 8476 MAC2STR(params.go_dev_addr), 8477 wpa_ssid_txt(params.go_ssid, 8478 params.go_ssid_len)); 8479 } else { 8480 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8481 "peer=" MACSTR " freq=%d", 8482 MAC2STR(params.peer->p2p_device_addr), 8483 params.go_freq); 8484 } 8485 return 0; 8486 } 8487 8488 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8489 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8490 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8491 return 0; 8492 } 8493 8494 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8495 wpa_s->p2p_oob_dev_pw = NULL; 8496 8497 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8498 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8499 "received"); 8500 return -1; 8501 } 8502 8503 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8504 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8505 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8506 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8507 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8508 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8509 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8510 8511 if (tag) { 8512 if (id < 0x10) { 8513 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8514 "peer OOB Device Password Id %u", id); 8515 return -1; 8516 } 8517 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8518 "Device Password Id %u", id); 8519 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8520 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8521 params.oob_dev_pw_len - 8522 WPS_OOB_PUBKEY_HASH_LEN - 2); 8523 wpa_s->p2p_oob_dev_pw_id = id; 8524 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8525 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8526 params.oob_dev_pw_len - 8527 WPS_OOB_PUBKEY_HASH_LEN - 2); 8528 if (wpa_s->p2p_oob_dev_pw == NULL) 8529 return -1; 8530 8531 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8532 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8533 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8534 return -1; 8535 } else { 8536 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8537 "without Device Password"); 8538 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8539 } 8540 8541 switch (params.next_step) { 8542 case NO_ACTION: 8543 case BOTH_GO: 8544 case PEER_CLIENT: 8545 /* already covered above */ 8546 return 0; 8547 case JOIN_GROUP: 8548 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8549 case AUTH_JOIN: 8550 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8551 case INIT_GO_NEG: 8552 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8553 case RESP_GO_NEG: 8554 /* TODO: use own OOB Dev Pw */ 8555 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8556 } 8557 8558 return -1; 8559} 8560 8561 8562int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8563 const struct wpabuf *data, int forced_freq) 8564{ 8565 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8566 return -1; 8567 8568 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8569} 8570 8571 8572int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8573 const struct wpabuf *req, 8574 const struct wpabuf *sel, int forced_freq) 8575{ 8576 struct wpabuf *tmp; 8577 int ret; 8578 8579 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8580 return -1; 8581 8582 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8583 8584 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8585 wpabuf_head(req), wpabuf_len(req)); 8586 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8587 wpabuf_head(sel), wpabuf_len(sel)); 8588 if (forced_freq) 8589 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8590 tmp = ndef_parse_p2p(init ? sel : req); 8591 if (tmp == NULL) { 8592 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8593 return -1; 8594 } 8595 8596 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8597 forced_freq); 8598 wpabuf_free(tmp); 8599 8600 return ret; 8601} 8602 8603 8604int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8605{ 8606 const u8 *if_addr; 8607 int go_intent = wpa_s->conf->p2p_go_intent; 8608 struct wpa_supplicant *iface; 8609 8610 if (wpa_s->global->p2p == NULL) 8611 return -1; 8612 8613 if (!enabled) { 8614 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8615 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8616 { 8617 if (!iface->ap_iface) 8618 continue; 8619 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8620 } 8621 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8622 0, NULL); 8623 if (wpa_s->p2p_nfc_tag_enabled) 8624 wpas_p2p_remove_pending_group_interface(wpa_s); 8625 wpa_s->p2p_nfc_tag_enabled = 0; 8626 return 0; 8627 } 8628 8629 if (wpa_s->global->p2p_disabled) 8630 return -1; 8631 8632 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8633 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8634 wpa_s->conf->wps_nfc_dev_pw == NULL || 8635 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8636 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8637 "to allow static handover cases"); 8638 return -1; 8639 } 8640 8641 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8642 8643 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8644 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8645 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8646 if (wpa_s->p2p_oob_dev_pw == NULL) 8647 return -1; 8648 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8649 8650 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 8651 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 8652 /* 8653 * P2P Group Interface present and the command came on group 8654 * interface, so enable the token for the current interface. 8655 */ 8656 wpa_s->create_p2p_iface = 0; 8657 } else { 8658 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 8659 } 8660 8661 if (wpa_s->create_p2p_iface) { 8662 enum wpa_driver_if_type iftype; 8663 /* Prepare to add a new interface for the group */ 8664 iftype = WPA_IF_P2P_GROUP; 8665 if (go_intent == 15) 8666 iftype = WPA_IF_P2P_GO; 8667 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 8668 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 8669 "interface for the group"); 8670 return -1; 8671 } 8672 8673 if_addr = wpa_s->pending_interface_addr; 8674 } else 8675 if_addr = wpa_s->own_addr; 8676 8677 wpa_s->p2p_nfc_tag_enabled = enabled; 8678 8679 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8680 struct hostapd_data *hapd; 8681 if (iface->ap_iface == NULL) 8682 continue; 8683 hapd = iface->ap_iface->bss[0]; 8684 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 8685 hapd->conf->wps_nfc_dh_pubkey = 8686 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 8687 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 8688 hapd->conf->wps_nfc_dh_privkey = 8689 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 8690 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 8691 hapd->conf->wps_nfc_dev_pw = 8692 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8693 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8694 8695 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 8696 wpa_dbg(iface, MSG_DEBUG, 8697 "P2P: Failed to enable NFC Tag for GO"); 8698 } 8699 } 8700 p2p_set_authorized_oob_dev_pw_id( 8701 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 8702 if_addr); 8703 8704 return 0; 8705} 8706 8707#endif /* CONFIG_WPS_NFC */ 8708 8709 8710static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 8711 struct wpa_used_freq_data *freqs, 8712 unsigned int num) 8713{ 8714 u8 curr_chan, cand, chan; 8715 unsigned int i; 8716 8717 /* 8718 * If possible, optimize the Listen channel to be a channel that is 8719 * already used by one of the other interfaces. 8720 */ 8721 if (!wpa_s->conf->p2p_optimize_listen_chan) 8722 return; 8723 8724 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 8725 return; 8726 8727 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 8728 for (i = 0, cand = 0; i < num; i++) { 8729 ieee80211_freq_to_chan(freqs[i].freq, &chan); 8730 if (curr_chan == chan) { 8731 cand = 0; 8732 break; 8733 } 8734 8735 if (chan == 1 || chan == 6 || chan == 11) 8736 cand = chan; 8737 } 8738 8739 if (cand) { 8740 wpa_dbg(wpa_s, MSG_DEBUG, 8741 "P2P: Update Listen channel to %u based on operating channel", 8742 cand); 8743 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 8744 } 8745} 8746 8747 8748static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 8749{ 8750 struct hostapd_config *conf; 8751 struct p2p_go_neg_results params; 8752 struct csa_settings csa_settings; 8753 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8754 int old_freq = current_ssid->frequency; 8755 int ret; 8756 8757 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 8758 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 8759 return -1; 8760 } 8761 8762 /* 8763 * TODO: This function may not always work correctly. For example, 8764 * when we have a running GO and a BSS on a DFS channel. 8765 */ 8766 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8767 wpa_dbg(wpa_s, MSG_DEBUG, 8768 "P2P CSA: Failed to select new frequency for GO"); 8769 return -1; 8770 } 8771 8772 if (current_ssid->frequency == params.freq) { 8773 wpa_dbg(wpa_s, MSG_DEBUG, 8774 "P2P CSA: Selected same frequency - not moving GO"); 8775 return 0; 8776 } 8777 8778 conf = hostapd_config_defaults(); 8779 if (!conf) { 8780 wpa_dbg(wpa_s, MSG_DEBUG, 8781 "P2P CSA: Failed to allocate default config"); 8782 return -1; 8783 } 8784 8785 current_ssid->frequency = params.freq; 8786 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 8787 wpa_dbg(wpa_s, MSG_DEBUG, 8788 "P2P CSA: Failed to create new GO config"); 8789 ret = -1; 8790 goto out; 8791 } 8792 8793 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 8794 wpa_dbg(wpa_s, MSG_DEBUG, 8795 "P2P CSA: CSA to a different band is not supported"); 8796 ret = -1; 8797 goto out; 8798 } 8799 8800 os_memset(&csa_settings, 0, sizeof(csa_settings)); 8801 csa_settings.cs_count = P2P_GO_CSA_COUNT; 8802 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 8803 csa_settings.freq_params.freq = params.freq; 8804 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 8805 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 8806 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 8807 8808 if (conf->ieee80211ac) { 8809 int freq1 = 0, freq2 = 0; 8810 u8 chan, opclass; 8811 8812 if (ieee80211_freq_to_channel_ext(params.freq, 8813 conf->secondary_channel, 8814 conf->vht_oper_chwidth, 8815 &opclass, &chan) == 8816 NUM_HOSTAPD_MODES) { 8817 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 8818 ret = -1; 8819 goto out; 8820 } 8821 8822 if (conf->vht_oper_centr_freq_seg0_idx) 8823 freq1 = ieee80211_chan_to_freq( 8824 NULL, opclass, 8825 conf->vht_oper_centr_freq_seg0_idx); 8826 8827 if (conf->vht_oper_centr_freq_seg1_idx) 8828 freq2 = ieee80211_chan_to_freq( 8829 NULL, opclass, 8830 conf->vht_oper_centr_freq_seg1_idx); 8831 8832 if (freq1 < 0 || freq2 < 0) { 8833 wpa_dbg(wpa_s, MSG_DEBUG, 8834 "P2P CSA: Selected invalid VHT center freqs"); 8835 ret = -1; 8836 goto out; 8837 } 8838 8839 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 8840 csa_settings.freq_params.center_freq1 = freq1; 8841 csa_settings.freq_params.center_freq2 = freq2; 8842 8843 switch (conf->vht_oper_chwidth) { 8844 case VHT_CHANWIDTH_80MHZ: 8845 case VHT_CHANWIDTH_80P80MHZ: 8846 csa_settings.freq_params.bandwidth = 80; 8847 break; 8848 case VHT_CHANWIDTH_160MHZ: 8849 csa_settings.freq_params.bandwidth = 160; 8850 break; 8851 } 8852 } 8853 8854 ret = ap_switch_channel(wpa_s, &csa_settings); 8855out: 8856 current_ssid->frequency = old_freq; 8857 hostapd_config_free(conf); 8858 return ret; 8859} 8860 8861 8862static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 8863{ 8864 struct p2p_go_neg_results params; 8865 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8866 8867 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 8868 8869 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 8870 current_ssid->frequency); 8871 8872 /* Stop the AP functionality */ 8873 /* TODO: Should do this in a way that does not indicated to possible 8874 * P2P Clients in the group that the group is terminated. */ 8875 wpa_supplicant_ap_deinit(wpa_s); 8876 8877 /* Reselect the GO frequency */ 8878 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8879 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 8880 wpas_p2p_group_delete(wpa_s, 8881 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8882 return; 8883 } 8884 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 8885 params.freq); 8886 8887 if (params.freq && 8888 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 8889 wpa_printf(MSG_DEBUG, 8890 "P2P: Selected freq (%u MHz) is not valid for P2P", 8891 params.freq); 8892 wpas_p2p_group_delete(wpa_s, 8893 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 8894 return; 8895 } 8896 8897 /* Update the frequency */ 8898 current_ssid->frequency = params.freq; 8899 wpa_s->connect_without_scan = current_ssid; 8900 wpa_s->reassociate = 1; 8901 wpa_s->disconnected = 0; 8902 wpa_supplicant_req_scan(wpa_s, 0, 0); 8903} 8904 8905 8906static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 8907{ 8908 struct wpa_supplicant *wpa_s = eloop_ctx; 8909 8910 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 8911 return; 8912 8913 wpas_p2p_go_update_common_freqs(wpa_s); 8914 8915 /* Do not move GO in the middle of a CSA */ 8916 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 8917 wpa_printf(MSG_DEBUG, 8918 "P2P: CSA is in progress - not moving GO"); 8919 return; 8920 } 8921 8922 /* 8923 * First, try a channel switch flow. If it is not supported or fails, 8924 * take down the GO and bring it up again. 8925 */ 8926 if (wpas_p2p_move_go_csa(wpa_s) < 0) 8927 wpas_p2p_move_go_no_csa(wpa_s); 8928} 8929 8930 8931static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 8932{ 8933 struct wpa_supplicant *wpa_s = eloop_ctx; 8934 struct wpa_used_freq_data *freqs = NULL; 8935 unsigned int num = wpa_s->num_multichan_concurrent; 8936 8937 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 8938 if (!freqs) 8939 return; 8940 8941 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 8942 8943 /* Previous attempt to move a GO was not possible -- try again. */ 8944 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 8945 WPAS_P2P_CHANNEL_UPDATE_ANY); 8946 8947 os_free(freqs); 8948} 8949 8950 8951/* 8952 * Consider moving a GO from its currently used frequency: 8953 * 1. It is possible that due to regulatory consideration the frequency 8954 * can no longer be used and there is a need to evacuate the GO. 8955 * 2. It is possible that due to MCC considerations, it would be preferable 8956 * to move the GO to a channel that is currently used by some other 8957 * station interface. 8958 * 8959 * In case a frequency that became invalid is once again valid, cancel a 8960 * previously initiated GO frequency change. 8961 */ 8962static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 8963 struct wpa_used_freq_data *freqs, 8964 unsigned int num) 8965{ 8966 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 8967 unsigned int timeout; 8968 int freq; 8969 8970 wpas_p2p_go_update_common_freqs(wpa_s); 8971 8972 freq = wpa_s->current_ssid->frequency; 8973 for (i = 0, invalid_freq = 0; i < num; i++) { 8974 if (freqs[i].freq == freq) { 8975 flags = freqs[i].flags; 8976 8977 /* The channel is invalid, must change it */ 8978 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 8979 wpa_dbg(wpa_s, MSG_DEBUG, 8980 "P2P: Freq=%d MHz no longer valid for GO", 8981 freq); 8982 invalid_freq = 1; 8983 } 8984 } else if (freqs[i].flags == 0) { 8985 /* Freq is not used by any other station interface */ 8986 continue; 8987 } else if (!p2p_supported_freq(wpa_s->global->p2p, 8988 freqs[i].freq)) { 8989 /* Freq is not valid for P2P use cases */ 8990 continue; 8991 } else if (wpa_s->conf->p2p_go_freq_change_policy == 8992 P2P_GO_FREQ_MOVE_SCM) { 8993 policy_move = 1; 8994 } else if (wpa_s->conf->p2p_go_freq_change_policy == 8995 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 8996 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 8997 policy_move = 1; 8998 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 8999 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9000 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9001 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9002 policy_move = 1; 9003 } else if ((wpa_s->drv_flags & 9004 WPA_DRIVER_FLAGS_AP_CSA) && 9005 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9006 u8 chan; 9007 9008 /* 9009 * We do not support CSA between bands, so move 9010 * GO only within the same band. 9011 */ 9012 if (wpa_s->ap_iface->current_mode->mode == 9013 ieee80211_freq_to_chan(freqs[i].freq, 9014 &chan)) 9015 policy_move = 1; 9016 } 9017 } 9018 } 9019 9020 wpa_dbg(wpa_s, MSG_DEBUG, 9021 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9022 invalid_freq, policy_move, flags); 9023 9024 /* 9025 * The channel is valid, or we are going to have a policy move, so 9026 * cancel timeout. 9027 */ 9028 if (!invalid_freq || policy_move) { 9029 wpa_dbg(wpa_s, MSG_DEBUG, 9030 "P2P: Cancel a GO move from freq=%d MHz", freq); 9031 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9032 9033 if (wpas_p2p_in_progress(wpa_s)) { 9034 wpa_dbg(wpa_s, MSG_DEBUG, 9035 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9036 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9037 wpa_s, NULL); 9038 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9039 wpas_p2p_reconsider_moving_go, 9040 wpa_s, NULL); 9041 return; 9042 } 9043 } 9044 9045 if (!invalid_freq && (!policy_move || flags != 0)) { 9046 wpa_dbg(wpa_s, MSG_DEBUG, 9047 "P2P: Not initiating a GO frequency change"); 9048 return; 9049 } 9050 9051 /* 9052 * Do not consider moving GO if it is in the middle of a CSA. When the 9053 * CSA is finished this flow should be retriggered. 9054 */ 9055 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9056 wpa_dbg(wpa_s, MSG_DEBUG, 9057 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9058 return; 9059 } 9060 9061 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9062 timeout = P2P_GO_FREQ_CHANGE_TIME; 9063 else 9064 timeout = 0; 9065 9066 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9067 freq, timeout); 9068 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9069 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9070} 9071 9072 9073static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9074 struct wpa_used_freq_data *freqs, 9075 unsigned int num, 9076 enum wpas_p2p_channel_update_trig trig) 9077{ 9078 struct wpa_supplicant *ifs; 9079 9080 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9081 NULL); 9082 9083 /* 9084 * Travers all the radio interfaces, and for each GO interface, check 9085 * if there is a need to move the GO from the frequency it is using, 9086 * or in case the frequency is valid again, cancel the evacuation flow. 9087 */ 9088 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9089 radio_list) { 9090 if (ifs->current_ssid == NULL || 9091 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9092 continue; 9093 9094 /* 9095 * The GO was just started or completed channel switch, no need 9096 * to move it. 9097 */ 9098 if (wpa_s == ifs && 9099 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9100 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9101 wpa_dbg(wpa_s, MSG_DEBUG, 9102 "P2P: GO move - schedule re-consideration"); 9103 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9104 wpas_p2p_reconsider_moving_go, 9105 wpa_s, NULL); 9106 continue; 9107 } 9108 9109 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9110 } 9111} 9112 9113 9114void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9115{ 9116 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9117 return; 9118 9119 wpas_p2p_update_channel_list(wpa_s, 9120 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9121} 9122 9123 9124void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9125{ 9126 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9127 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9128 "the management interface is being removed"); 9129 wpas_p2p_deinit_global(wpa_s->global); 9130 } 9131} 9132 9133 9134void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9135{ 9136 if (wpa_s->ap_iface->bss) 9137 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9138 wpas_p2p_group_deinit(wpa_s); 9139} 9140