1/* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "includes.h" 10 11#include "common.h" 12#include "eloop.h" 13#include "common/ieee802_11_defs.h" 14#include "common/ieee802_11_common.h" 15#include "common/wpa_ctrl.h" 16#include "wps/wps_i.h" 17#include "p2p_i.h" 18#include "p2p.h" 19 20 21static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 22static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 23static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 24 const u8 *sa, const u8 *data, size_t len, 25 int rx_freq); 26static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 27 const u8 *sa, const u8 *data, 28 size_t len); 29static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 30static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 31 32 33/* 34 * p2p_scan recovery timeout 35 * 36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 37 * timeout for this to avoid hitting P2P timeout unnecessarily. 38 */ 39#define P2P_SCAN_TIMEOUT 35 40 41/** 42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 43 * entries will be removed 44 */ 45#define P2P_PEER_EXPIRATION_AGE 300 46 47#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2) 48 49static void p2p_expire_peers(struct p2p_data *p2p) 50{ 51 struct p2p_device *dev, *n; 52 struct os_time now; 53 size_t i; 54 55 os_get_time(&now); 56 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 57 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 58 continue; 59 60 if (p2p->cfg->go_connected && 61 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 62 dev->info.p2p_device_addr)) { 63 /* 64 * We are connected as a client to a group in which the 65 * peer is the GO, so do not expire the peer entry. 66 */ 67 os_get_time(&dev->last_seen); 68 continue; 69 } 70 71 for (i = 0; i < p2p->num_groups; i++) { 72 if (p2p_group_is_client_connected( 73 p2p->groups[i], dev->info.p2p_device_addr)) 74 break; 75 } 76 if (i < p2p->num_groups) { 77 /* 78 * The peer is connected as a client in a group where 79 * we are the GO, so do not expire the peer entry. 80 */ 81 os_get_time(&dev->last_seen); 82 continue; 83 } 84 85 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer " 86 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr)); 87 dl_list_del(&dev->list); 88 p2p_device_free(p2p, dev); 89 } 90} 91 92 93static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx) 94{ 95 struct p2p_data *p2p = eloop_ctx; 96 p2p_expire_peers(p2p); 97 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 98 p2p_expiration_timeout, p2p, NULL); 99} 100 101 102static const char * p2p_state_txt(int state) 103{ 104 switch (state) { 105 case P2P_IDLE: 106 return "IDLE"; 107 case P2P_SEARCH: 108 return "SEARCH"; 109 case P2P_CONNECT: 110 return "CONNECT"; 111 case P2P_CONNECT_LISTEN: 112 return "CONNECT_LISTEN"; 113 case P2P_GO_NEG: 114 return "GO_NEG"; 115 case P2P_LISTEN_ONLY: 116 return "LISTEN_ONLY"; 117 case P2P_WAIT_PEER_CONNECT: 118 return "WAIT_PEER_CONNECT"; 119 case P2P_WAIT_PEER_IDLE: 120 return "WAIT_PEER_IDLE"; 121 case P2P_SD_DURING_FIND: 122 return "SD_DURING_FIND"; 123 case P2P_PROVISIONING: 124 return "PROVISIONING"; 125 case P2P_PD_DURING_FIND: 126 return "PD_DURING_FIND"; 127 case P2P_INVITE: 128 return "INVITE"; 129 case P2P_INVITE_LISTEN: 130 return "INVITE_LISTEN"; 131 case P2P_SEARCH_WHEN_READY: 132 return "SEARCH_WHEN_READY"; 133 case P2P_CONTINUE_SEARCH_WHEN_READY: 134 return "CONTINUE_SEARCH_WHEN_READY"; 135 default: 136 return "?"; 137 } 138} 139 140 141u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 142{ 143 struct p2p_device *dev = NULL; 144 145 if (!addr || !p2p) 146 return 0; 147 148 dev = p2p_get_device(p2p, addr); 149 if (dev) 150 return dev->wps_prov_info; 151 else 152 return 0; 153} 154 155 156void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 157{ 158 struct p2p_device *dev = NULL; 159 160 if (!addr || !p2p) 161 return; 162 163 dev = p2p_get_device(p2p, addr); 164 if (dev) 165 dev->wps_prov_info = 0; 166} 167 168 169void p2p_set_state(struct p2p_data *p2p, int new_state) 170{ 171 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s", 172 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 173 p2p->state = new_state; 174} 175 176 177void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 178{ 179 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 180 "P2P: Set timeout (state=%s): %u.%06u sec", 181 p2p_state_txt(p2p->state), sec, usec); 182 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 183 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 184} 185 186 187void p2p_clear_timeout(struct p2p_data *p2p) 188{ 189 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)", 190 p2p_state_txt(p2p->state)); 191 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 192} 193 194 195void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, 196 int status) 197{ 198 struct p2p_go_neg_results res; 199 p2p_clear_timeout(p2p); 200 p2p_set_state(p2p, P2P_IDLE); 201 if (p2p->go_neg_peer) 202 p2p->go_neg_peer->wps_method = WPS_NOT_READY; 203 p2p->go_neg_peer = NULL; 204 205 os_memset(&res, 0, sizeof(res)); 206 res.status = status; 207 if (peer) { 208 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 209 ETH_ALEN); 210 os_memcpy(res.peer_interface_addr, peer->intended_addr, 211 ETH_ALEN); 212 } 213 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 214} 215 216 217static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 218{ 219 unsigned int r, tu; 220 int freq; 221 struct wpabuf *ies; 222 223 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 224 "P2P: Starting short listen state (state=%s)", 225 p2p_state_txt(p2p->state)); 226 227 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 228 p2p->cfg->channel); 229 if (freq < 0) { 230 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 231 "P2P: Unknown regulatory class/channel"); 232 return; 233 } 234 235 os_get_random((u8 *) &r, sizeof(r)); 236 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 237 p2p->min_disc_int) * 100; 238 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 239 tu = p2p->max_disc_tu; 240 if (!dev_disc && tu < 100) 241 tu = 100; /* Need to wait in non-device discovery use cases */ 242 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 243 tu = p2p->cfg->max_listen * 1000 / 1024; 244 245 if (tu == 0) { 246 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip listen state " 247 "since duration was 0 TU"); 248 p2p_set_timeout(p2p, 0, 0); 249 return; 250 } 251 252 p2p->pending_listen_freq = freq; 253 p2p->pending_listen_sec = 0; 254 p2p->pending_listen_usec = 1024 * tu; 255 256 ies = p2p_build_probe_resp_ies(p2p); 257 if (ies == NULL) 258 return; 259 260 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 261 ies) < 0) { 262 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 263 "P2P: Failed to start listen mode"); 264 p2p->pending_listen_freq = 0; 265 } 266 wpabuf_free(ies); 267} 268 269 270int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 271{ 272 int freq; 273 struct wpabuf *ies; 274 275 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 276 "P2P: Going to listen(only) state"); 277 278 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 279 p2p->cfg->channel); 280 if (freq < 0) { 281 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 282 "P2P: Unknown regulatory class/channel"); 283 return -1; 284 } 285 286 p2p->pending_listen_freq = freq; 287 p2p->pending_listen_sec = timeout / 1000; 288 p2p->pending_listen_usec = (timeout % 1000) * 1000; 289 290 if (p2p->p2p_scan_running) { 291 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 292 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 293 "P2P: p2p_scan running - connect is already " 294 "pending - skip listen"); 295 return 0; 296 } 297 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 298 "P2P: p2p_scan running - delay start of listen state"); 299 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 300 return 0; 301 } 302 303 ies = p2p_build_probe_resp_ies(p2p); 304 if (ies == NULL) 305 return -1; 306 307 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 308 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 309 "P2P: Failed to start listen mode"); 310 p2p->pending_listen_freq = 0; 311 wpabuf_free(ies); 312 return -1; 313 } 314 wpabuf_free(ies); 315 316 p2p_set_state(p2p, P2P_LISTEN_ONLY); 317 318 return 0; 319} 320 321 322static void p2p_device_clear_reported(struct p2p_data *p2p) 323{ 324 struct p2p_device *dev; 325 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 326 dev->flags &= ~P2P_DEV_REPORTED; 327} 328 329 330/** 331 * p2p_get_device - Fetch a peer entry 332 * @p2p: P2P module context from p2p_init() 333 * @addr: P2P Device Address of the peer 334 * Returns: Pointer to the device entry or %NULL if not found 335 */ 336struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 337{ 338 struct p2p_device *dev; 339 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 340 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 341 return dev; 342 } 343 return NULL; 344} 345 346 347/** 348 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 349 * @p2p: P2P module context from p2p_init() 350 * @addr: P2P Interface Address of the peer 351 * Returns: Pointer to the device entry or %NULL if not found 352 */ 353struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 354 const u8 *addr) 355{ 356 struct p2p_device *dev; 357 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 358 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 359 return dev; 360 } 361 return NULL; 362} 363 364 365/** 366 * p2p_create_device - Create a peer entry 367 * @p2p: P2P module context from p2p_init() 368 * @addr: P2P Device Address of the peer 369 * Returns: Pointer to the device entry or %NULL on failure 370 * 371 * If there is already an entry for the peer, it will be returned instead of 372 * creating a new one. 373 */ 374static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 375 const u8 *addr) 376{ 377 struct p2p_device *dev, *oldest = NULL; 378 size_t count = 0; 379 380 dev = p2p_get_device(p2p, addr); 381 if (dev) 382 return dev; 383 384 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 385 count++; 386 if (oldest == NULL || 387 os_time_before(&dev->last_seen, &oldest->last_seen)) 388 oldest = dev; 389 } 390 if (count + 1 > p2p->cfg->max_peers && oldest) { 391 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 392 "P2P: Remove oldest peer entry to make room for a new " 393 "peer"); 394 dl_list_del(&oldest->list); 395 p2p_device_free(p2p, oldest); 396 } 397 398 dev = os_zalloc(sizeof(*dev)); 399 if (dev == NULL) 400 return NULL; 401 dl_list_add(&p2p->devices, &dev->list); 402 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 403 404 return dev; 405} 406 407 408static void p2p_copy_client_info(struct p2p_device *dev, 409 struct p2p_client_info *cli) 410{ 411 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 412 dev->info.device_name[cli->dev_name_len] = '\0'; 413 dev->info.dev_capab = cli->dev_capab; 414 dev->info.config_methods = cli->config_methods; 415 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 416 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 417 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 418 dev->info.wps_sec_dev_type_list_len); 419} 420 421 422static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 423 const u8 *go_interface_addr, int freq, 424 const u8 *gi, size_t gi_len) 425{ 426 struct p2p_group_info info; 427 size_t c; 428 struct p2p_device *dev; 429 430 if (gi == NULL) 431 return 0; 432 433 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 434 return -1; 435 436 /* 437 * Clear old data for this group; if the devices are still in the 438 * group, the information will be restored in the loop following this. 439 */ 440 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 441 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 442 ETH_ALEN) == 0) { 443 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 444 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 445 } 446 } 447 448 for (c = 0; c < info.num_clients; c++) { 449 struct p2p_client_info *cli = &info.client[c]; 450 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 451 ETH_ALEN) == 0) 452 continue; /* ignore our own entry */ 453 dev = p2p_get_device(p2p, cli->p2p_device_addr); 454 if (dev) { 455 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 456 P2P_DEV_PROBE_REQ_ONLY)) { 457 /* 458 * Update information since we have not 459 * received this directly from the client. 460 */ 461 p2p_copy_client_info(dev, cli); 462 } else { 463 /* 464 * Need to update P2P Client Discoverability 465 * flag since it is valid only in P2P Group 466 * Info attribute. 467 */ 468 dev->info.dev_capab &= 469 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 470 dev->info.dev_capab |= 471 cli->dev_capab & 472 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 473 } 474 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 475 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 476 } 477 } else { 478 dev = p2p_create_device(p2p, cli->p2p_device_addr); 479 if (dev == NULL) 480 continue; 481 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 482 p2p_copy_client_info(dev, cli); 483 dev->oper_freq = freq; 484 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 485 dev->info.p2p_device_addr, 486 &dev->info, 1); 487 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 488 } 489 490 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 491 ETH_ALEN); 492 os_get_time(&dev->last_seen); 493 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 494 os_memcpy(dev->member_in_go_iface, go_interface_addr, 495 ETH_ALEN); 496 } 497 498 return 0; 499} 500 501 502static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req, 503 const struct p2p_message *msg) 504{ 505 os_memcpy(dev->info.device_name, msg->device_name, 506 sizeof(dev->info.device_name)); 507 508 if (msg->manufacturer && 509 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 510 os_memset(dev->info.manufacturer, 0, 511 sizeof(dev->info.manufacturer)); 512 os_memcpy(dev->info.manufacturer, msg->manufacturer, 513 msg->manufacturer_len); 514 } 515 516 if (msg->model_name && 517 msg->model_name_len < sizeof(dev->info.model_name)) { 518 os_memset(dev->info.model_name, 0, 519 sizeof(dev->info.model_name)); 520 os_memcpy(dev->info.model_name, msg->model_name, 521 msg->model_name_len); 522 } 523 524 if (msg->model_number && 525 msg->model_number_len < sizeof(dev->info.model_number)) { 526 os_memset(dev->info.model_number, 0, 527 sizeof(dev->info.model_number)); 528 os_memcpy(dev->info.model_number, msg->model_number, 529 msg->model_number_len); 530 } 531 532 if (msg->serial_number && 533 msg->serial_number_len < sizeof(dev->info.serial_number)) { 534 os_memset(dev->info.serial_number, 0, 535 sizeof(dev->info.serial_number)); 536 os_memcpy(dev->info.serial_number, msg->serial_number, 537 msg->serial_number_len); 538 } 539 540 if (msg->pri_dev_type) 541 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 542 sizeof(dev->info.pri_dev_type)); 543 else if (msg->wps_pri_dev_type) 544 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 545 sizeof(dev->info.pri_dev_type)); 546 547 if (msg->wps_sec_dev_type_list) { 548 os_memcpy(dev->info.wps_sec_dev_type_list, 549 msg->wps_sec_dev_type_list, 550 msg->wps_sec_dev_type_list_len); 551 dev->info.wps_sec_dev_type_list_len = 552 msg->wps_sec_dev_type_list_len; 553 } 554 555 if (msg->capability) { 556 /* 557 * P2P Client Discoverability bit is reserved in all frames 558 * that use this function, so do not change its value here. 559 */ 560 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 561 dev->info.dev_capab |= msg->capability[0] & 562 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 563 dev->info.group_capab = msg->capability[1]; 564 } 565 566 if (msg->ext_listen_timing) { 567 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 568 dev->ext_listen_interval = 569 WPA_GET_LE16(msg->ext_listen_timing + 2); 570 } 571 572 if (!probe_req) { 573 dev->info.config_methods = msg->config_methods ? 574 msg->config_methods : msg->wps_config_methods; 575 } 576} 577 578 579/** 580 * p2p_add_device - Add peer entries based on scan results or P2P frames 581 * @p2p: P2P module context from p2p_init() 582 * @addr: Source address of Beacon or Probe Response frame (may be either 583 * P2P Device Address or P2P Interface Address) 584 * @level: Signal level (signal strength of the received frame from the peer) 585 * @freq: Frequency on which the Beacon or Probe Response frame was received 586 * @age_ms: Age of the information in milliseconds 587 * @ies: IEs from the Beacon or Probe Response frame 588 * @ies_len: Length of ies buffer in octets 589 * @scan_res: Whether this was based on scan results 590 * Returns: 0 on success, -1 on failure 591 * 592 * If the scan result is for a GO, the clients in the group will also be added 593 * to the peer table. This function can also be used with some other frames 594 * like Provision Discovery Request that contains P2P Capability and P2P Device 595 * Info attributes. 596 */ 597int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 598 unsigned int age_ms, int level, const u8 *ies, 599 size_t ies_len, int scan_res) 600{ 601 struct p2p_device *dev; 602 struct p2p_message msg; 603 const u8 *p2p_dev_addr; 604 int i; 605 struct os_time time_now, time_tmp_age, entry_ts; 606 607 os_memset(&msg, 0, sizeof(msg)); 608 if (p2p_parse_ies(ies, ies_len, &msg)) { 609 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 610 "P2P: Failed to parse P2P IE for a device entry"); 611 p2p_parse_free(&msg); 612 return -1; 613 } 614 615 if (msg.p2p_device_addr) 616 p2p_dev_addr = msg.p2p_device_addr; 617 else if (msg.device_id) 618 p2p_dev_addr = msg.device_id; 619 else { 620 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 621 "P2P: Ignore scan data without P2P Device Info or " 622 "P2P Device Id"); 623 p2p_parse_free(&msg); 624 return -1; 625 } 626 627 if (!is_zero_ether_addr(p2p->peer_filter) && 628 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 629 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer " 630 "filter for " MACSTR " due to peer filter", 631 MAC2STR(p2p_dev_addr)); 632 p2p_parse_free(&msg); 633 return 0; 634 } 635 636 dev = p2p_create_device(p2p, p2p_dev_addr); 637 if (dev == NULL) { 638 p2p_parse_free(&msg); 639 return -1; 640 } 641 642 os_get_time(&time_now); 643 time_tmp_age.sec = age_ms / 1000; 644 time_tmp_age.usec = (age_ms % 1000) * 1000; 645 os_time_sub(&time_now, &time_tmp_age, &entry_ts); 646 647 /* 648 * Update the device entry only if the new peer 649 * entry is newer than the one previously stored. 650 */ 651 if (dev->last_seen.usec > 0 && 652 os_time_before(&entry_ts, &dev->last_seen)) { 653 p2p_parse_free(&msg); 654 return -1; 655 } 656 657 os_memcpy(&dev->last_seen, &entry_ts, sizeof(struct os_time)); 658 659 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 660 661 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 662 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 663 if (msg.ssid && 664 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 665 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 666 != 0)) { 667 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 668 dev->oper_ssid_len = msg.ssid[1]; 669 } 670 671 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 672 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 673 int ds_freq; 674 if (*msg.ds_params == 14) 675 ds_freq = 2484; 676 else 677 ds_freq = 2407 + *msg.ds_params * 5; 678 if (freq != ds_freq) { 679 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 680 "P2P: Update Listen frequency based on DS " 681 "Parameter Set IE: %d -> %d MHz", 682 freq, ds_freq); 683 freq = ds_freq; 684 } 685 } 686 687 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 688 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 689 "P2P: Update Listen frequency based on scan " 690 "results (" MACSTR " %d -> %d MHz (DS param %d)", 691 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 692 freq, msg.ds_params ? *msg.ds_params : -1); 693 } 694 if (scan_res) { 695 dev->listen_freq = freq; 696 if (msg.group_info) 697 dev->oper_freq = freq; 698 } 699 dev->info.level = level; 700 701 p2p_copy_wps_info(dev, 0, &msg); 702 703 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 704 wpabuf_free(dev->info.wps_vendor_ext[i]); 705 dev->info.wps_vendor_ext[i] = NULL; 706 } 707 708 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 709 if (msg.wps_vendor_ext[i] == NULL) 710 break; 711 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 712 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 713 if (dev->info.wps_vendor_ext[i] == NULL) 714 break; 715 } 716 717 if (msg.wfd_subelems) { 718 wpabuf_free(dev->info.wfd_subelems); 719 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 720 } 721 722 if (scan_res) { 723 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 724 msg.group_info, msg.group_info_len); 725 } 726 727 p2p_parse_free(&msg); 728 729 if (p2p_pending_sd_req(p2p, dev)) 730 dev->flags |= P2P_DEV_SD_SCHEDULE; 731 732 if (dev->flags & P2P_DEV_REPORTED) 733 return 0; 734 735 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 736 "P2P: Peer found with Listen frequency %d MHz", freq); 737 if (dev->flags & P2P_DEV_USER_REJECTED) { 738 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 739 "P2P: Do not report rejected device"); 740 return 0; 741 } 742 743 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 744 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 745 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 746 747 return 0; 748} 749 750 751static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 752{ 753 int i; 754 755 if (p2p->go_neg_peer == dev) { 756 /* 757 * If GO Negotiation is in progress, report that it has failed. 758 */ 759 p2p_go_neg_failed(p2p, dev, -1); 760 p2p->go_neg_peer = NULL; 761 } 762 if (p2p->invite_peer == dev) 763 p2p->invite_peer = NULL; 764 if (p2p->sd_peer == dev) 765 p2p->sd_peer = NULL; 766 if (p2p->pending_client_disc_go == dev) 767 p2p->pending_client_disc_go = NULL; 768 769 /* dev_lost() device, but only if it was previously dev_found() */ 770 if (dev->flags & P2P_DEV_REPORTED_ONCE) 771 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 772 dev->info.p2p_device_addr); 773 774 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 775 wpabuf_free(dev->info.wps_vendor_ext[i]); 776 dev->info.wps_vendor_ext[i] = NULL; 777 } 778 779 wpabuf_free(dev->info.wfd_subelems); 780 781 os_free(dev); 782} 783 784 785static int p2p_get_next_prog_freq(struct p2p_data *p2p) 786{ 787 struct p2p_channels *c; 788 struct p2p_reg_class *cla; 789 size_t cl, ch; 790 int found = 0; 791 u8 reg_class; 792 u8 channel; 793 int freq; 794 795 c = &p2p->cfg->channels; 796 for (cl = 0; cl < c->reg_classes; cl++) { 797 cla = &c->reg_class[cl]; 798 if (cla->reg_class != p2p->last_prog_scan_class) 799 continue; 800 for (ch = 0; ch < cla->channels; ch++) { 801 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 802 found = 1; 803 break; 804 } 805 } 806 if (found) 807 break; 808 } 809 810 if (!found) { 811 /* Start from beginning */ 812 reg_class = c->reg_class[0].reg_class; 813 channel = c->reg_class[0].channel[0]; 814 } else { 815 /* Pick the next channel */ 816 ch++; 817 if (ch == cla->channels) { 818 cl++; 819 if (cl == c->reg_classes) 820 cl = 0; 821 ch = 0; 822 } 823 reg_class = c->reg_class[cl].reg_class; 824 channel = c->reg_class[cl].channel[ch]; 825 } 826 827 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel); 828 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search " 829 "channel: reg_class %u channel %u -> %d MHz", 830 reg_class, channel, freq); 831 p2p->last_prog_scan_class = reg_class; 832 p2p->last_prog_scan_chan = channel; 833 834 if (freq == 2412 || freq == 2437 || freq == 2462) 835 return 0; /* No need to add social channels */ 836 return freq; 837} 838 839 840static void p2p_search(struct p2p_data *p2p) 841{ 842 int freq = 0; 843 enum p2p_scan_type type; 844 u16 pw_id = DEV_PW_DEFAULT; 845 int res; 846 847 if (p2p->drv_in_listen) { 848 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still " 849 "in Listen state - wait for it to end before " 850 "continuing"); 851 return; 852 } 853 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 854 855 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 856 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 857 type = P2P_SCAN_SOCIAL_PLUS_ONE; 858 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search " 859 "(+ freq %u)", freq); 860 } else { 861 type = P2P_SCAN_SOCIAL; 862 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search"); 863 } 864 865 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 866 p2p->num_req_dev_types, p2p->req_dev_types, 867 p2p->find_dev_id, pw_id); 868 if (res < 0) { 869 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 870 "P2P: Scan request failed"); 871 p2p_continue_find(p2p); 872 } else if (res == 1) { 873 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 874 "p2p_scan at this point - will try again after " 875 "previous scan completes"); 876 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 877 } else { 878 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 879 p2p->p2p_scan_running = 1; 880 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 881 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 882 p2p, NULL); 883 } 884} 885 886 887static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 888{ 889 struct p2p_data *p2p = eloop_ctx; 890 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop"); 891 p2p_stop_find(p2p); 892} 893 894 895static int p2p_run_after_scan(struct p2p_data *p2p) 896{ 897 struct p2p_device *dev; 898 enum p2p_after_scan op; 899 900 if (p2p->after_scan_tx) { 901 /* TODO: schedule p2p_run_after_scan to be called from TX 902 * status callback(?) */ 903 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending " 904 "Action frame at p2p_scan completion"); 905 p2p->cfg->send_action(p2p->cfg->cb_ctx, 906 p2p->after_scan_tx->freq, 907 p2p->after_scan_tx->dst, 908 p2p->after_scan_tx->src, 909 p2p->after_scan_tx->bssid, 910 (u8 *) (p2p->after_scan_tx + 1), 911 p2p->after_scan_tx->len, 912 p2p->after_scan_tx->wait_time); 913 os_free(p2p->after_scan_tx); 914 p2p->after_scan_tx = NULL; 915 return 1; 916 } 917 918 op = p2p->start_after_scan; 919 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 920 switch (op) { 921 case P2P_AFTER_SCAN_NOTHING: 922 break; 923 case P2P_AFTER_SCAN_LISTEN: 924 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 925 "requested Listen state"); 926 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 927 p2p->pending_listen_usec / 1000); 928 return 1; 929 case P2P_AFTER_SCAN_CONNECT: 930 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 931 "requested connect with " MACSTR, 932 MAC2STR(p2p->after_scan_peer)); 933 dev = p2p_get_device(p2p, p2p->after_scan_peer); 934 if (dev == NULL) { 935 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not " 936 "known anymore"); 937 break; 938 } 939 p2p_connect_send(p2p, dev); 940 return 1; 941 } 942 943 return 0; 944} 945 946 947static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 948{ 949 struct p2p_data *p2p = eloop_ctx; 950 int running; 951 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout " 952 "(running=%d)", p2p->p2p_scan_running); 953 running = p2p->p2p_scan_running; 954 /* Make sure we recover from missed scan results callback */ 955 p2p->p2p_scan_running = 0; 956 957 if (running) 958 p2p_run_after_scan(p2p); 959} 960 961 962static void p2p_free_req_dev_types(struct p2p_data *p2p) 963{ 964 p2p->num_req_dev_types = 0; 965 os_free(p2p->req_dev_types); 966 p2p->req_dev_types = NULL; 967} 968 969 970int p2p_find(struct p2p_data *p2p, unsigned int timeout, 971 enum p2p_discovery_type type, 972 unsigned int num_req_dev_types, const u8 *req_dev_types, 973 const u8 *dev_id, unsigned int search_delay) 974{ 975 int res; 976 977 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)", 978 type); 979 if (p2p->p2p_scan_running) { 980 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is " 981 "already running"); 982 } 983 984 p2p_free_req_dev_types(p2p); 985 if (req_dev_types && num_req_dev_types) { 986 p2p->req_dev_types = os_malloc(num_req_dev_types * 987 WPS_DEV_TYPE_LEN); 988 if (p2p->req_dev_types == NULL) 989 return -1; 990 os_memcpy(p2p->req_dev_types, req_dev_types, 991 num_req_dev_types * WPS_DEV_TYPE_LEN); 992 p2p->num_req_dev_types = num_req_dev_types; 993 } 994 995 if (dev_id) { 996 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 997 p2p->find_dev_id = p2p->find_dev_id_buf; 998 } else 999 p2p->find_dev_id = NULL; 1000 1001 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1002 p2p_clear_timeout(p2p); 1003 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1004 p2p->find_type = type; 1005 p2p_device_clear_reported(p2p); 1006 p2p_set_state(p2p, P2P_SEARCH); 1007 p2p->search_delay = search_delay; 1008 p2p->in_search_delay = 0; 1009 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1010 p2p->last_p2p_find_timeout = timeout; 1011 if (timeout) 1012 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1013 p2p, NULL); 1014 switch (type) { 1015 case P2P_FIND_START_WITH_FULL: 1016 case P2P_FIND_PROGRESSIVE: 1017 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1018 p2p->num_req_dev_types, 1019 p2p->req_dev_types, dev_id, 1020 DEV_PW_DEFAULT); 1021 break; 1022 case P2P_FIND_ONLY_SOCIAL: 1023 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1024 p2p->num_req_dev_types, 1025 p2p->req_dev_types, dev_id, 1026 DEV_PW_DEFAULT); 1027 break; 1028 default: 1029 return -1; 1030 } 1031 1032 if (res == 0) { 1033 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 1034 p2p->p2p_scan_running = 1; 1035 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1036 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1037 p2p, NULL); 1038 } else if (res == 1) { 1039 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 1040 "p2p_scan at this point - will try again after " 1041 "previous scan completes"); 1042 res = 0; 1043 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1044 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1045 } else { 1046 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 1047 "p2p_scan"); 1048 p2p_set_state(p2p, P2P_IDLE); 1049 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1050 } 1051 1052 return res; 1053} 1054 1055 1056int p2p_other_scan_completed(struct p2p_data *p2p) 1057{ 1058 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1059 p2p_set_state(p2p, P2P_SEARCH); 1060 p2p_search(p2p); 1061 return 1; 1062 } 1063 if (p2p->state != P2P_SEARCH_WHEN_READY) 1064 return 0; 1065 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find " 1066 "now that previous scan was completed"); 1067 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1068 p2p->num_req_dev_types, p2p->req_dev_types, 1069 p2p->find_dev_id, p2p->search_delay) < 0) 1070 return 0; 1071 return 1; 1072} 1073 1074 1075void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1076{ 1077 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find"); 1078 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1079 p2p_clear_timeout(p2p); 1080 if (p2p->state == P2P_SEARCH) 1081 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1082 p2p_set_state(p2p, P2P_IDLE); 1083 p2p_free_req_dev_types(p2p); 1084 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1085 p2p->go_neg_peer = NULL; 1086 p2p->sd_peer = NULL; 1087 p2p->invite_peer = NULL; 1088 p2p_stop_listen_for_freq(p2p, freq); 1089} 1090 1091 1092void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1093{ 1094 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1095 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen " 1096 "since we are on correct channel for response"); 1097 return; 1098 } 1099 if (p2p->in_listen) { 1100 p2p->in_listen = 0; 1101 p2p_clear_timeout(p2p); 1102 } 1103 if (p2p->drv_in_listen) { 1104 /* 1105 * The driver may not deliver callback to p2p_listen_end() 1106 * when the operation gets canceled, so clear the internal 1107 * variable that is tracking driver state. 1108 */ 1109 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear " 1110 "drv_in_listen (%d)", p2p->drv_in_listen); 1111 p2p->drv_in_listen = 0; 1112 } 1113 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1114} 1115 1116 1117void p2p_stop_find(struct p2p_data *p2p) 1118{ 1119 p2p_stop_find_for_freq(p2p, 0); 1120} 1121 1122 1123static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1124 unsigned int force_freq, 1125 unsigned int pref_freq) 1126{ 1127 u8 op_class, op_channel; 1128 unsigned int freq = force_freq ? force_freq : pref_freq; 1129 1130 if (p2p_freq_to_channel(p2p->cfg->country, freq, 1131 &op_class, &op_channel) < 0) { 1132 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1133 "P2P: Unsupported frequency %u MHz", freq); 1134 return -1; 1135 } 1136 1137 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) { 1138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1139 "P2P: Frequency %u MHz (oper_class %u channel %u) not " 1140 "allowed for P2P", freq, op_class, op_channel); 1141 return -1; 1142 } 1143 1144 p2p->op_reg_class = op_class; 1145 p2p->op_channel = op_channel; 1146 1147 if (force_freq) { 1148 p2p->channels.reg_classes = 1; 1149 p2p->channels.reg_class[0].channels = 1; 1150 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1151 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1152 } else { 1153 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1154 sizeof(struct p2p_channels)); 1155 } 1156 1157 return 0; 1158} 1159 1160 1161static void p2p_prepare_channel_best(struct p2p_data *p2p) 1162{ 1163 u8 op_class, op_channel; 1164 1165 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1166 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1167 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall, 1168 &op_class, &op_channel) == 0) { 1169 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best " 1170 "overall channel as operating channel preference"); 1171 p2p->op_reg_class = op_class; 1172 p2p->op_channel = op_channel; 1173 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1174 p2p_supported_freq(p2p, p2p->best_freq_5) && 1175 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 1176 &op_class, &op_channel) == 0) { 1177 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz " 1178 "channel as operating channel preference"); 1179 p2p->op_reg_class = op_class; 1180 p2p->op_channel = op_channel; 1181 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1182 p2p_supported_freq(p2p, p2p->best_freq_24) && 1183 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 1184 &op_class, &op_channel) == 0) { 1185 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 " 1186 "GHz channel as operating channel preference"); 1187 p2p->op_reg_class = op_class; 1188 p2p->op_channel = op_channel; 1189 } else { 1190 p2p->op_reg_class = p2p->cfg->op_reg_class; 1191 p2p->op_channel = p2p->cfg->op_channel; 1192 } 1193 1194 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1195 sizeof(struct p2p_channels)); 1196} 1197 1198 1199/** 1200 * p2p_prepare_channel - Select operating channel for GO Negotiation 1201 * @p2p: P2P module context from p2p_init() 1202 * @dev: Selected peer device 1203 * @force_freq: Forced frequency in MHz or 0 if not forced 1204 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1205 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1206 * 1207 * This function is used to do initial operating channel selection for GO 1208 * Negotiation prior to having received peer information. The selected channel 1209 * may be further optimized in p2p_reselect_channel() once the peer information 1210 * is available. 1211 */ 1212static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1213 unsigned int force_freq, unsigned int pref_freq) 1214{ 1215 if (force_freq || pref_freq) { 1216 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0) 1217 return -1; 1218 } else { 1219 p2p_prepare_channel_best(p2p); 1220 } 1221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1222 "P2P: Own preference for operation channel: " 1223 "Operating Class %u Channel %u%s", 1224 p2p->op_reg_class, p2p->op_channel, 1225 force_freq ? " (forced)" : ""); 1226 1227 if (force_freq) 1228 dev->flags |= P2P_DEV_FORCE_FREQ; 1229 else 1230 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1231 1232 return 0; 1233} 1234 1235 1236static void p2p_set_dev_persistent(struct p2p_device *dev, 1237 int persistent_group) 1238{ 1239 switch (persistent_group) { 1240 case 0: 1241 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1242 P2P_DEV_PREFER_PERSISTENT_RECONN); 1243 break; 1244 case 1: 1245 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1246 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1247 break; 1248 case 2: 1249 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1250 P2P_DEV_PREFER_PERSISTENT_RECONN; 1251 break; 1252 } 1253} 1254 1255 1256int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1257 enum p2p_wps_method wps_method, 1258 int go_intent, const u8 *own_interface_addr, 1259 unsigned int force_freq, int persistent_group, 1260 const u8 *force_ssid, size_t force_ssid_len, 1261 int pd_before_go_neg, unsigned int pref_freq) 1262{ 1263 struct p2p_device *dev; 1264 1265 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1266 "P2P: Request to start group negotiation - peer=" MACSTR 1267 " GO Intent=%d Intended Interface Address=" MACSTR 1268 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1269 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1270 wps_method, persistent_group, pd_before_go_neg); 1271 1272 dev = p2p_get_device(p2p, peer_addr); 1273 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1274 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1275 "P2P: Cannot connect to unknown P2P Device " MACSTR, 1276 MAC2STR(peer_addr)); 1277 return -1; 1278 } 1279 1280 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1281 return -1; 1282 1283 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1284 if (!(dev->info.dev_capab & 1285 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1286 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1287 "P2P: Cannot connect to P2P Device " MACSTR 1288 " that is in a group and is not discoverable", 1289 MAC2STR(peer_addr)); 1290 return -1; 1291 } 1292 if (dev->oper_freq <= 0) { 1293 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1294 "P2P: Cannot connect to P2P Device " MACSTR 1295 " with incomplete information", 1296 MAC2STR(peer_addr)); 1297 return -1; 1298 } 1299 1300 /* 1301 * First, try to connect directly. If the peer does not 1302 * acknowledge frames, assume it is sleeping and use device 1303 * discoverability via the GO at that point. 1304 */ 1305 } 1306 1307 p2p->ssid_set = 0; 1308 if (force_ssid) { 1309 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1310 force_ssid, force_ssid_len); 1311 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1312 p2p->ssid_len = force_ssid_len; 1313 p2p->ssid_set = 1; 1314 } 1315 1316 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1317 dev->flags &= ~P2P_DEV_USER_REJECTED; 1318 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1319 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1320 if (pd_before_go_neg) 1321 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1322 else 1323 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1324 dev->connect_reqs = 0; 1325 dev->go_neg_req_sent = 0; 1326 dev->go_state = UNKNOWN_GO; 1327 p2p_set_dev_persistent(dev, persistent_group); 1328 p2p->go_intent = go_intent; 1329 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1330 1331 if (p2p->state != P2P_IDLE) 1332 p2p_stop_find(p2p); 1333 1334 if (p2p->after_scan_tx) { 1335 /* 1336 * We need to drop the pending frame to avoid issues with the 1337 * new GO Negotiation, e.g., when the pending frame was from a 1338 * previous attempt at starting a GO Negotiation. 1339 */ 1340 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 1341 "previous pending Action frame TX that was waiting " 1342 "for p2p_scan completion"); 1343 os_free(p2p->after_scan_tx); 1344 p2p->after_scan_tx = NULL; 1345 } 1346 1347 dev->wps_method = wps_method; 1348 dev->status = P2P_SC_SUCCESS; 1349 1350 if (p2p->p2p_scan_running) { 1351 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1352 "P2P: p2p_scan running - delay connect send"); 1353 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1354 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1355 return 0; 1356 } 1357 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1358 1359 return p2p_connect_send(p2p, dev); 1360} 1361 1362 1363int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1364 enum p2p_wps_method wps_method, 1365 int go_intent, const u8 *own_interface_addr, 1366 unsigned int force_freq, int persistent_group, 1367 const u8 *force_ssid, size_t force_ssid_len, 1368 unsigned int pref_freq) 1369{ 1370 struct p2p_device *dev; 1371 1372 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1373 "P2P: Request to authorize group negotiation - peer=" MACSTR 1374 " GO Intent=%d Intended Interface Address=" MACSTR 1375 " wps_method=%d persistent_group=%d", 1376 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1377 wps_method, persistent_group); 1378 1379 dev = p2p_get_device(p2p, peer_addr); 1380 if (dev == NULL) { 1381 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1382 "P2P: Cannot authorize unknown P2P Device " MACSTR, 1383 MAC2STR(peer_addr)); 1384 return -1; 1385 } 1386 1387 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1388 return -1; 1389 1390 p2p->ssid_set = 0; 1391 if (force_ssid) { 1392 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1393 force_ssid, force_ssid_len); 1394 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1395 p2p->ssid_len = force_ssid_len; 1396 p2p->ssid_set = 1; 1397 } 1398 1399 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1400 dev->flags &= ~P2P_DEV_USER_REJECTED; 1401 dev->go_neg_req_sent = 0; 1402 dev->go_state = UNKNOWN_GO; 1403 p2p_set_dev_persistent(dev, persistent_group); 1404 p2p->go_intent = go_intent; 1405 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1406 1407 dev->wps_method = wps_method; 1408 dev->status = P2P_SC_SUCCESS; 1409 1410 return 0; 1411} 1412 1413 1414void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1415 struct p2p_device *dev, struct p2p_message *msg) 1416{ 1417 os_get_time(&dev->last_seen); 1418 1419 p2p_copy_wps_info(dev, 0, msg); 1420 1421 if (msg->listen_channel) { 1422 int freq; 1423 freq = p2p_channel_to_freq((char *) msg->listen_channel, 1424 msg->listen_channel[3], 1425 msg->listen_channel[4]); 1426 if (freq < 0) { 1427 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1428 "P2P: Unknown peer Listen channel: " 1429 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1430 msg->listen_channel[0], 1431 msg->listen_channel[1], 1432 msg->listen_channel[2], 1433 msg->listen_channel[3], 1434 msg->listen_channel[4]); 1435 } else { 1436 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update " 1437 "peer " MACSTR " Listen channel: %u -> %u MHz", 1438 MAC2STR(dev->info.p2p_device_addr), 1439 dev->listen_freq, freq); 1440 dev->listen_freq = freq; 1441 } 1442 } 1443 1444 if (msg->wfd_subelems) { 1445 wpabuf_free(dev->info.wfd_subelems); 1446 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1447 } 1448 1449 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1450 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1451 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1452 "P2P: Completed device entry based on data from " 1453 "GO Negotiation Request"); 1454 } else { 1455 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1456 "P2P: Created device entry based on GO Neg Req: " 1457 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1458 "listen_freq=%d", 1459 MAC2STR(dev->info.p2p_device_addr), 1460 dev->info.dev_capab, dev->info.group_capab, 1461 dev->info.device_name, dev->listen_freq); 1462 } 1463 1464 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1465 1466 if (dev->flags & P2P_DEV_USER_REJECTED) { 1467 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1468 "P2P: Do not report rejected device"); 1469 return; 1470 } 1471 1472 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1473 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1474 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1475} 1476 1477 1478void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1479{ 1480 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1481 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1482 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1483 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1484 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1485} 1486 1487 1488int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1489{ 1490 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1491 p2p_random(params->passphrase, 8); 1492 return 0; 1493} 1494 1495 1496void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1497{ 1498 struct p2p_go_neg_results res; 1499 int go = peer->go_state == LOCAL_GO; 1500 struct p2p_channels intersection; 1501 int freqs; 1502 size_t i, j; 1503 1504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1505 "P2P: GO Negotiation with " MACSTR " completed (%s will be " 1506 "GO)", MAC2STR(peer->info.p2p_device_addr), 1507 go ? "local end" : "peer"); 1508 1509 os_memset(&res, 0, sizeof(res)); 1510 res.role_go = go; 1511 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1512 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1513 res.wps_method = peer->wps_method; 1514 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1515 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1516 res.persistent_group = 2; 1517 else 1518 res.persistent_group = 1; 1519 } 1520 1521 if (go) { 1522 /* Setup AP mode for WPS provisioning */ 1523 res.freq = p2p_channel_to_freq(p2p->cfg->country, 1524 p2p->op_reg_class, 1525 p2p->op_channel); 1526 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1527 res.ssid_len = p2p->ssid_len; 1528 p2p_random(res.passphrase, 8); 1529 } else { 1530 res.freq = peer->oper_freq; 1531 if (p2p->ssid_len) { 1532 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1533 res.ssid_len = p2p->ssid_len; 1534 } 1535 } 1536 1537 p2p_channels_intersect(&p2p->channels, &peer->channels, 1538 &intersection); 1539 freqs = 0; 1540 for (i = 0; i < intersection.reg_classes; i++) { 1541 struct p2p_reg_class *c = &intersection.reg_class[i]; 1542 if (freqs + 1 == P2P_MAX_CHANNELS) 1543 break; 1544 for (j = 0; j < c->channels; j++) { 1545 int freq; 1546 if (freqs + 1 == P2P_MAX_CHANNELS) 1547 break; 1548 freq = p2p_channel_to_freq(peer->country, c->reg_class, 1549 c->channel[j]); 1550 if (freq < 0) 1551 continue; 1552 res.freq_list[freqs++] = freq; 1553 } 1554 } 1555 1556 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1557 1558 p2p_clear_timeout(p2p); 1559 p2p->ssid_set = 0; 1560 peer->go_neg_req_sent = 0; 1561 peer->wps_method = WPS_NOT_READY; 1562 1563 p2p_set_state(p2p, P2P_PROVISIONING); 1564 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1565} 1566 1567 1568static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1569 const u8 *data, size_t len, int rx_freq) 1570{ 1571 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1572 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1573 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1574 1575 if (len < 1) 1576 return; 1577 1578 switch (data[0]) { 1579 case P2P_GO_NEG_REQ: 1580 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1581 break; 1582 case P2P_GO_NEG_RESP: 1583 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1584 break; 1585 case P2P_GO_NEG_CONF: 1586 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1587 break; 1588 case P2P_INVITATION_REQ: 1589 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1590 rx_freq); 1591 break; 1592 case P2P_INVITATION_RESP: 1593 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1594 break; 1595 case P2P_PROV_DISC_REQ: 1596 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1597 break; 1598 case P2P_PROV_DISC_RESP: 1599 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1600 break; 1601 case P2P_DEV_DISC_REQ: 1602 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1603 break; 1604 case P2P_DEV_DISC_RESP: 1605 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1606 break; 1607 default: 1608 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1609 "P2P: Unsupported P2P Public Action frame type %d", 1610 data[0]); 1611 break; 1612 } 1613} 1614 1615 1616static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1617 const u8 *sa, const u8 *bssid, const u8 *data, 1618 size_t len, int freq) 1619{ 1620 if (len < 1) 1621 return; 1622 1623 switch (data[0]) { 1624 case WLAN_PA_VENDOR_SPECIFIC: 1625 data++; 1626 len--; 1627 if (len < 3) 1628 return; 1629 if (WPA_GET_BE24(data) != OUI_WFA) 1630 return; 1631 1632 data += 3; 1633 len -= 3; 1634 if (len < 1) 1635 return; 1636 1637 if (*data != P2P_OUI_TYPE) 1638 return; 1639 1640 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1641 break; 1642 case WLAN_PA_GAS_INITIAL_REQ: 1643 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1644 break; 1645 case WLAN_PA_GAS_INITIAL_RESP: 1646 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1647 break; 1648 case WLAN_PA_GAS_COMEBACK_REQ: 1649 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1650 break; 1651 case WLAN_PA_GAS_COMEBACK_RESP: 1652 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1653 break; 1654 } 1655} 1656 1657 1658void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1659 const u8 *bssid, u8 category, 1660 const u8 *data, size_t len, int freq) 1661{ 1662 if (category == WLAN_ACTION_PUBLIC) { 1663 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1664 return; 1665 } 1666 1667 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1668 return; 1669 1670 if (len < 4) 1671 return; 1672 1673 if (WPA_GET_BE24(data) != OUI_WFA) 1674 return; 1675 data += 3; 1676 len -= 3; 1677 1678 if (*data != P2P_OUI_TYPE) 1679 return; 1680 data++; 1681 len--; 1682 1683 /* P2P action frame */ 1684 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1685 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa)); 1686 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1687 1688 if (len < 1) 1689 return; 1690 switch (data[0]) { 1691 case P2P_NOA: 1692 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1693 "P2P: Received P2P Action - Notice of Absence"); 1694 /* TODO */ 1695 break; 1696 case P2P_PRESENCE_REQ: 1697 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1698 break; 1699 case P2P_PRESENCE_RESP: 1700 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1701 break; 1702 case P2P_GO_DISC_REQ: 1703 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1704 break; 1705 default: 1706 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1707 "P2P: Received P2P Action - unknown type %u", data[0]); 1708 break; 1709 } 1710} 1711 1712 1713static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1714{ 1715 struct p2p_data *p2p = eloop_ctx; 1716 if (p2p->go_neg_peer == NULL) 1717 return; 1718 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1719 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1720 p2p_connect_send(p2p, p2p->go_neg_peer); 1721} 1722 1723 1724static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1725{ 1726 struct p2p_data *p2p = eloop_ctx; 1727 if (p2p->invite_peer == NULL) 1728 return; 1729 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1730 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1731} 1732 1733 1734static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1735 const u8 *ie, size_t ie_len) 1736{ 1737 struct p2p_message msg; 1738 struct p2p_device *dev; 1739 1740 os_memset(&msg, 0, sizeof(msg)); 1741 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1742 { 1743 p2p_parse_free(&msg); 1744 return; /* not a P2P probe */ 1745 } 1746 1747 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1748 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1749 != 0) { 1750 /* The Probe Request is not part of P2P Device Discovery. It is 1751 * not known whether the source address of the frame is the P2P 1752 * Device Address or P2P Interface Address. Do not add a new 1753 * peer entry based on this frames. 1754 */ 1755 p2p_parse_free(&msg); 1756 return; 1757 } 1758 1759 dev = p2p_get_device(p2p, addr); 1760 if (dev) { 1761 if (dev->country[0] == 0 && msg.listen_channel) 1762 os_memcpy(dev->country, msg.listen_channel, 3); 1763 os_get_time(&dev->last_seen); 1764 p2p_parse_free(&msg); 1765 return; /* already known */ 1766 } 1767 1768 dev = p2p_create_device(p2p, addr); 1769 if (dev == NULL) { 1770 p2p_parse_free(&msg); 1771 return; 1772 } 1773 1774 os_get_time(&dev->last_seen); 1775 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1776 1777 if (msg.listen_channel) { 1778 os_memcpy(dev->country, msg.listen_channel, 3); 1779 dev->listen_freq = p2p_channel_to_freq(dev->country, 1780 msg.listen_channel[3], 1781 msg.listen_channel[4]); 1782 } 1783 1784 p2p_copy_wps_info(dev, 1, &msg); 1785 1786 if (msg.wfd_subelems) { 1787 wpabuf_free(dev->info.wfd_subelems); 1788 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1789 } 1790 1791 p2p_parse_free(&msg); 1792 1793 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1794 "P2P: Created device entry based on Probe Req: " MACSTR 1795 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1796 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1797 dev->info.group_capab, dev->info.device_name, 1798 dev->listen_freq); 1799} 1800 1801 1802struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1803 const u8 *addr, 1804 struct p2p_message *msg) 1805{ 1806 struct p2p_device *dev; 1807 1808 dev = p2p_get_device(p2p, addr); 1809 if (dev) { 1810 os_get_time(&dev->last_seen); 1811 return dev; /* already known */ 1812 } 1813 1814 dev = p2p_create_device(p2p, addr); 1815 if (dev == NULL) 1816 return NULL; 1817 1818 p2p_add_dev_info(p2p, addr, dev, msg); 1819 1820 return dev; 1821} 1822 1823 1824static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1825{ 1826 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1827 return 1; 1828 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1829 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1830 WPA_GET_BE16(&req_dev_type[6]) == 0) 1831 return 1; /* Category match with wildcard OUI/sub-category */ 1832 return 0; 1833} 1834 1835 1836int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1837 size_t num_req_dev_type) 1838{ 1839 size_t i; 1840 for (i = 0; i < num_req_dev_type; i++) { 1841 if (dev_type_match(dev_type, req_dev_type[i])) 1842 return 1; 1843 } 1844 return 0; 1845} 1846 1847 1848/** 1849 * p2p_match_dev_type - Match local device type with requested type 1850 * @p2p: P2P module context from p2p_init() 1851 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1852 * Returns: 1 on match, 0 on mismatch 1853 * 1854 * This function can be used to match the Requested Device Type attribute in 1855 * WPS IE with the local device types for deciding whether to reply to a Probe 1856 * Request frame. 1857 */ 1858int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1859{ 1860 struct wps_parse_attr attr; 1861 size_t i; 1862 1863 if (wps_parse_msg(wps, &attr)) 1864 return 1; /* assume no Requested Device Type attributes */ 1865 1866 if (attr.num_req_dev_type == 0) 1867 return 1; /* no Requested Device Type attributes -> match */ 1868 1869 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1870 attr.num_req_dev_type)) 1871 return 1; /* Own Primary Device Type matches */ 1872 1873 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1874 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1875 attr.req_dev_type, 1876 attr.num_req_dev_type)) 1877 return 1; /* Own Secondary Device Type matches */ 1878 1879 /* No matching device type found */ 1880 return 0; 1881} 1882 1883 1884struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1885{ 1886 struct wpabuf *buf; 1887 u8 *len; 1888 int pw_id = -1; 1889 size_t extra = 0; 1890 1891#ifdef CONFIG_WIFI_DISPLAY 1892 if (p2p->wfd_ie_probe_resp) 1893 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1894#endif /* CONFIG_WIFI_DISPLAY */ 1895 1896 buf = wpabuf_alloc(1000 + extra); 1897 if (buf == NULL) 1898 return NULL; 1899 1900 if (p2p->go_neg_peer) { 1901 /* Advertise immediate availability of WPS credential */ 1902 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1903 } 1904 1905 p2p_build_wps_ie(p2p, buf, pw_id, 1); 1906 1907#ifdef CONFIG_WIFI_DISPLAY 1908 if (p2p->wfd_ie_probe_resp) 1909 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1910#endif /* CONFIG_WIFI_DISPLAY */ 1911 1912 /* P2P IE */ 1913 len = p2p_buf_add_ie_hdr(buf); 1914 p2p_buf_add_capability(buf, p2p->dev_capab & 1915 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1916 if (p2p->ext_listen_interval) 1917 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1918 p2p->ext_listen_interval); 1919 p2p_buf_add_device_info(buf, p2p, NULL); 1920 p2p_buf_update_ie_hdr(buf, len); 1921 1922 return buf; 1923} 1924 1925 1926static int is_11b(u8 rate) 1927{ 1928 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16; 1929} 1930 1931 1932static int supp_rates_11b_only(struct ieee802_11_elems *elems) 1933{ 1934 int num_11b = 0, num_others = 0; 1935 int i; 1936 1937 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL) 1938 return 0; 1939 1940 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) { 1941 if (is_11b(elems->supp_rates[i])) 1942 num_11b++; 1943 else 1944 num_others++; 1945 } 1946 1947 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len; 1948 i++) { 1949 if (is_11b(elems->ext_supp_rates[i])) 1950 num_11b++; 1951 else 1952 num_others++; 1953 } 1954 1955 return num_11b > 0 && num_others == 0; 1956} 1957 1958 1959static enum p2p_probe_req_status 1960p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1961 const u8 *bssid, const u8 *ie, size_t ie_len) 1962{ 1963 struct ieee802_11_elems elems; 1964 struct wpabuf *buf; 1965 struct ieee80211_mgmt *resp; 1966 struct p2p_message msg; 1967 struct wpabuf *ies; 1968 1969 if (!p2p->in_listen || !p2p->drv_in_listen) { 1970 /* not in Listen state - ignore Probe Request */ 1971 return P2P_PREQ_NOT_LISTEN; 1972 } 1973 1974 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 1975 ParseFailed) { 1976 /* Ignore invalid Probe Request frames */ 1977 return P2P_PREQ_MALFORMED; 1978 } 1979 1980 if (elems.p2p == NULL) { 1981 /* not a P2P probe - ignore it */ 1982 return P2P_PREQ_NOT_P2P; 1983 } 1984 1985 if (dst && !is_broadcast_ether_addr(dst) && 1986 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 1987 /* Not sent to the broadcast address or our P2P Device Address 1988 */ 1989 return P2P_PREQ_NOT_PROCESSED; 1990 } 1991 1992 if (bssid && !is_broadcast_ether_addr(bssid)) { 1993 /* Not sent to the Wildcard BSSID */ 1994 return P2P_PREQ_NOT_PROCESSED; 1995 } 1996 1997 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 1998 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 1999 0) { 2000 /* not using P2P Wildcard SSID - ignore */ 2001 return P2P_PREQ_NOT_PROCESSED; 2002 } 2003 2004 if (supp_rates_11b_only(&elems)) { 2005 /* Indicates support for 11b rates only */ 2006 return P2P_PREQ_NOT_P2P; 2007 } 2008 2009 os_memset(&msg, 0, sizeof(msg)); 2010 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2011 /* Could not parse P2P attributes */ 2012 return P2P_PREQ_NOT_P2P; 2013 } 2014 2015 if (msg.device_id && 2016 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2017 /* Device ID did not match */ 2018 p2p_parse_free(&msg); 2019 return P2P_PREQ_NOT_PROCESSED; 2020 } 2021 2022 /* Check Requested Device Type match */ 2023 if (msg.wps_attributes && 2024 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2025 /* No match with Requested Device Type */ 2026 p2p_parse_free(&msg); 2027 return P2P_PREQ_NOT_PROCESSED; 2028 } 2029 p2p_parse_free(&msg); 2030 2031 if (!p2p->cfg->send_probe_resp) { 2032 /* Response generated elsewhere */ 2033 return P2P_PREQ_NOT_PROCESSED; 2034 } 2035 2036 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2037 "P2P: Reply to P2P Probe Request in Listen state"); 2038 2039 /* 2040 * We do not really have a specific BSS that this frame is advertising, 2041 * so build a frame that has some information in valid format. This is 2042 * really only used for discovery purposes, not to learn exact BSS 2043 * parameters. 2044 */ 2045 ies = p2p_build_probe_resp_ies(p2p); 2046 if (ies == NULL) 2047 return P2P_PREQ_NOT_PROCESSED; 2048 2049 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2050 if (buf == NULL) { 2051 wpabuf_free(ies); 2052 return P2P_PREQ_NOT_PROCESSED; 2053 } 2054 2055 resp = NULL; 2056 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2057 2058 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2059 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2060 os_memcpy(resp->da, addr, ETH_ALEN); 2061 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2062 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2063 resp->u.probe_resp.beacon_int = host_to_le16(100); 2064 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2065 resp->u.probe_resp.capab_info = 2066 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2067 WLAN_CAPABILITY_PRIVACY | 2068 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2069 2070 wpabuf_put_u8(buf, WLAN_EID_SSID); 2071 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2072 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2073 2074 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2075 wpabuf_put_u8(buf, 8); 2076 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2077 wpabuf_put_u8(buf, 90 / 5); 2078 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2079 wpabuf_put_u8(buf, 180 / 5); 2080 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2081 wpabuf_put_u8(buf, 360 / 5); 2082 wpabuf_put_u8(buf, 480 / 5); 2083 wpabuf_put_u8(buf, 540 / 5); 2084 2085 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2086 wpabuf_put_u8(buf, 1); 2087 wpabuf_put_u8(buf, p2p->cfg->channel); 2088 2089 wpabuf_put_buf(buf, ies); 2090 wpabuf_free(ies); 2091 2092 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2093 2094 wpabuf_free(buf); 2095 2096 return P2P_PREQ_NOT_PROCESSED; 2097} 2098 2099 2100enum p2p_probe_req_status 2101p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2102 const u8 *bssid, const u8 *ie, size_t ie_len) 2103{ 2104 enum p2p_probe_req_status res; 2105 2106 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2107 2108 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2109 2110 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2111 p2p->go_neg_peer && 2112 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2113 == 0) { 2114 /* Received a Probe Request from GO Negotiation peer */ 2115 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2116 "P2P: Found GO Negotiation peer - try to start GO " 2117 "negotiation from timeout"); 2118 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2119 return P2P_PREQ_PROCESSED; 2120 } 2121 2122 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2123 p2p->invite_peer && 2124 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2125 == 0) { 2126 /* Received a Probe Request from Invite peer */ 2127 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2128 "P2P: Found Invite peer - try to start Invite from " 2129 "timeout"); 2130 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2131 return P2P_PREQ_PROCESSED; 2132 } 2133 2134 return res; 2135} 2136 2137 2138static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2139 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2140{ 2141 struct wpabuf *tmp; 2142 u8 *lpos; 2143 size_t tmplen; 2144 int res; 2145 u8 group_capab; 2146 2147 if (p2p_ie == NULL) 2148 return 0; /* WLAN AP is not a P2P manager */ 2149 2150 /* 2151 * (Re)Association Request - P2P IE 2152 * P2P Capability attribute (shall be present) 2153 * P2P Interface attribute (present if concurrent device and 2154 * P2P Management is enabled) 2155 */ 2156 tmp = wpabuf_alloc(200); 2157 if (tmp == NULL) 2158 return -1; 2159 2160 lpos = p2p_buf_add_ie_hdr(tmp); 2161 group_capab = 0; 2162 if (p2p->num_groups > 0) { 2163 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2164 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2165 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2166 p2p->cross_connect) 2167 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2168 } 2169 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2170 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2171 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2172 p2p_buf_add_p2p_interface(tmp, p2p); 2173 p2p_buf_update_ie_hdr(tmp, lpos); 2174 2175 tmplen = wpabuf_len(tmp); 2176 if (tmplen > len) 2177 res = -1; 2178 else { 2179 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2180 res = tmplen; 2181 } 2182 wpabuf_free(tmp); 2183 2184 return res; 2185} 2186 2187 2188int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2189 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2190{ 2191 struct wpabuf *tmp; 2192 u8 *lpos; 2193 struct p2p_device *peer; 2194 size_t tmplen; 2195 int res; 2196 size_t extra = 0; 2197 2198 if (!p2p_group) 2199 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2200 2201#ifdef CONFIG_WIFI_DISPLAY 2202 if (p2p->wfd_ie_assoc_req) 2203 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2204#endif /* CONFIG_WIFI_DISPLAY */ 2205 2206 /* 2207 * (Re)Association Request - P2P IE 2208 * P2P Capability attribute (shall be present) 2209 * Extended Listen Timing (may be present) 2210 * P2P Device Info attribute (shall be present) 2211 */ 2212 tmp = wpabuf_alloc(200 + extra); 2213 if (tmp == NULL) 2214 return -1; 2215 2216#ifdef CONFIG_WIFI_DISPLAY 2217 if (p2p->wfd_ie_assoc_req) 2218 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2219#endif /* CONFIG_WIFI_DISPLAY */ 2220 2221 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2222 2223 lpos = p2p_buf_add_ie_hdr(tmp); 2224 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2225 if (p2p->ext_listen_interval) 2226 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2227 p2p->ext_listen_interval); 2228 p2p_buf_add_device_info(tmp, p2p, peer); 2229 p2p_buf_update_ie_hdr(tmp, lpos); 2230 2231 tmplen = wpabuf_len(tmp); 2232 if (tmplen > len) 2233 res = -1; 2234 else { 2235 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2236 res = tmplen; 2237 } 2238 wpabuf_free(tmp); 2239 2240 return res; 2241} 2242 2243 2244int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2245{ 2246 struct wpabuf *p2p_ie; 2247 int ret; 2248 2249 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2250 if (p2p_ie == NULL) 2251 return 0; 2252 2253 ret = p2p_attr_text(p2p_ie, buf, end); 2254 wpabuf_free(p2p_ie); 2255 return ret; 2256} 2257 2258 2259int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2260{ 2261 struct p2p_message msg; 2262 2263 os_memset(&msg, 0, sizeof(msg)); 2264 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2265 return -1; 2266 2267 if (msg.p2p_device_addr) { 2268 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2269 return 0; 2270 } else if (msg.device_id) { 2271 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2272 return 0; 2273 } 2274 return -1; 2275} 2276 2277 2278int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2279{ 2280 struct wpabuf *p2p_ie; 2281 int ret; 2282 2283 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2284 P2P_IE_VENDOR_TYPE); 2285 if (p2p_ie == NULL) 2286 return -1; 2287 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2288 wpabuf_free(p2p_ie); 2289 return ret; 2290} 2291 2292 2293static void p2p_clear_go_neg(struct p2p_data *p2p) 2294{ 2295 p2p->go_neg_peer = NULL; 2296 p2p_clear_timeout(p2p); 2297 p2p_set_state(p2p, P2P_IDLE); 2298} 2299 2300 2301void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2302{ 2303 if (p2p->go_neg_peer == NULL) { 2304 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2305 "P2P: No pending Group Formation - " 2306 "ignore WPS registration success notification"); 2307 return; /* No pending Group Formation */ 2308 } 2309 2310 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2311 0) { 2312 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2313 "P2P: Ignore WPS registration success notification " 2314 "for " MACSTR " (GO Negotiation peer " MACSTR ")", 2315 MAC2STR(mac_addr), 2316 MAC2STR(p2p->go_neg_peer->intended_addr)); 2317 return; /* Ignore unexpected peer address */ 2318 } 2319 2320 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2321 "P2P: Group Formation completed successfully with " MACSTR, 2322 MAC2STR(mac_addr)); 2323 2324 p2p_clear_go_neg(p2p); 2325} 2326 2327 2328void p2p_group_formation_failed(struct p2p_data *p2p) 2329{ 2330 if (p2p->go_neg_peer == NULL) { 2331 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2332 "P2P: No pending Group Formation - " 2333 "ignore group formation failure notification"); 2334 return; /* No pending Group Formation */ 2335 } 2336 2337 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2338 "P2P: Group Formation failed with " MACSTR, 2339 MAC2STR(p2p->go_neg_peer->intended_addr)); 2340 2341 p2p_clear_go_neg(p2p); 2342} 2343 2344 2345struct p2p_data * p2p_init(const struct p2p_config *cfg) 2346{ 2347 struct p2p_data *p2p; 2348 2349 if (cfg->max_peers < 1) 2350 return NULL; 2351 2352 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2353 if (p2p == NULL) 2354 return NULL; 2355 p2p->cfg = (struct p2p_config *) (p2p + 1); 2356 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2357 if (cfg->dev_name) 2358 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2359 if (cfg->manufacturer) 2360 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2361 if (cfg->model_name) 2362 p2p->cfg->model_name = os_strdup(cfg->model_name); 2363 if (cfg->model_number) 2364 p2p->cfg->model_number = os_strdup(cfg->model_number); 2365 if (cfg->serial_number) 2366 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2367 if (cfg->pref_chan) { 2368 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2369 sizeof(struct p2p_channel)); 2370 if (p2p->cfg->pref_chan) { 2371 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2372 cfg->num_pref_chan * 2373 sizeof(struct p2p_channel)); 2374 } else 2375 p2p->cfg->num_pref_chan = 0; 2376 } 2377 2378 p2p->min_disc_int = 1; 2379 p2p->max_disc_int = 3; 2380 p2p->max_disc_tu = -1; 2381 2382 os_get_random(&p2p->next_tie_breaker, 1); 2383 p2p->next_tie_breaker &= 0x01; 2384 if (cfg->sd_request) 2385 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2386 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2387 if (cfg->concurrent_operations) 2388 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2389 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2390 2391 dl_list_init(&p2p->devices); 2392 2393 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2394 p2p_expiration_timeout, p2p, NULL); 2395 2396 p2p->go_timeout = 100; 2397 p2p->client_timeout = 20; 2398 2399 return p2p; 2400} 2401 2402 2403void p2p_deinit(struct p2p_data *p2p) 2404{ 2405#ifdef CONFIG_WIFI_DISPLAY 2406 wpabuf_free(p2p->wfd_ie_beacon); 2407 wpabuf_free(p2p->wfd_ie_probe_req); 2408 wpabuf_free(p2p->wfd_ie_probe_resp); 2409 wpabuf_free(p2p->wfd_ie_assoc_req); 2410 wpabuf_free(p2p->wfd_ie_invitation); 2411 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2412 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2413 wpabuf_free(p2p->wfd_ie_go_neg); 2414 wpabuf_free(p2p->wfd_dev_info); 2415 wpabuf_free(p2p->wfd_assoc_bssid); 2416 wpabuf_free(p2p->wfd_coupled_sink_info); 2417#endif /* CONFIG_WIFI_DISPLAY */ 2418 2419 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2420 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2421 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2422 p2p_flush(p2p); 2423 p2p_free_req_dev_types(p2p); 2424 os_free(p2p->cfg->dev_name); 2425 os_free(p2p->cfg->manufacturer); 2426 os_free(p2p->cfg->model_name); 2427 os_free(p2p->cfg->model_number); 2428 os_free(p2p->cfg->serial_number); 2429 os_free(p2p->cfg->pref_chan); 2430 os_free(p2p->groups); 2431 wpabuf_free(p2p->sd_resp); 2432 os_free(p2p->after_scan_tx); 2433 p2p_remove_wps_vendor_extensions(p2p); 2434 os_free(p2p); 2435} 2436 2437 2438void p2p_flush(struct p2p_data *p2p) 2439{ 2440 struct p2p_device *dev, *prev; 2441 p2p_stop_find(p2p); 2442 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2443 list) { 2444 dl_list_del(&dev->list); 2445 p2p_device_free(p2p, dev); 2446 } 2447 p2p_free_sd_queries(p2p); 2448 os_free(p2p->after_scan_tx); 2449 p2p->after_scan_tx = NULL; 2450} 2451 2452 2453int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2454{ 2455 struct p2p_device *dev; 2456 2457 dev = p2p_get_device(p2p, addr); 2458 if (dev == NULL) 2459 return -1; 2460 2461 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR, 2462 MAC2STR(addr)); 2463 2464 if (p2p->go_neg_peer == dev) 2465 p2p->go_neg_peer = NULL; 2466 2467 dev->wps_method = WPS_NOT_READY; 2468 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2469 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2470 2471 /* Check if after_scan_tx is for this peer. If so free it */ 2472 if (p2p->after_scan_tx && 2473 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2474 os_free(p2p->after_scan_tx); 2475 p2p->after_scan_tx = NULL; 2476 } 2477 2478 return 0; 2479} 2480 2481 2482int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2483{ 2484 os_free(p2p->cfg->dev_name); 2485 if (dev_name) { 2486 p2p->cfg->dev_name = os_strdup(dev_name); 2487 if (p2p->cfg->dev_name == NULL) 2488 return -1; 2489 } else 2490 p2p->cfg->dev_name = NULL; 2491 return 0; 2492} 2493 2494 2495int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2496{ 2497 os_free(p2p->cfg->manufacturer); 2498 p2p->cfg->manufacturer = NULL; 2499 if (manufacturer) { 2500 p2p->cfg->manufacturer = os_strdup(manufacturer); 2501 if (p2p->cfg->manufacturer == NULL) 2502 return -1; 2503 } 2504 2505 return 0; 2506} 2507 2508 2509int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2510{ 2511 os_free(p2p->cfg->model_name); 2512 p2p->cfg->model_name = NULL; 2513 if (model_name) { 2514 p2p->cfg->model_name = os_strdup(model_name); 2515 if (p2p->cfg->model_name == NULL) 2516 return -1; 2517 } 2518 2519 return 0; 2520} 2521 2522 2523int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2524{ 2525 os_free(p2p->cfg->model_number); 2526 p2p->cfg->model_number = NULL; 2527 if (model_number) { 2528 p2p->cfg->model_number = os_strdup(model_number); 2529 if (p2p->cfg->model_number == NULL) 2530 return -1; 2531 } 2532 2533 return 0; 2534} 2535 2536 2537int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2538{ 2539 os_free(p2p->cfg->serial_number); 2540 p2p->cfg->serial_number = NULL; 2541 if (serial_number) { 2542 p2p->cfg->serial_number = os_strdup(serial_number); 2543 if (p2p->cfg->serial_number == NULL) 2544 return -1; 2545 } 2546 2547 return 0; 2548} 2549 2550 2551void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2552{ 2553 p2p->cfg->config_methods = config_methods; 2554} 2555 2556 2557void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2558{ 2559 os_memcpy(p2p->cfg->uuid, uuid, 16); 2560} 2561 2562 2563int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2564{ 2565 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2566 return 0; 2567} 2568 2569 2570int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2571 size_t num_dev_types) 2572{ 2573 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2574 num_dev_types = P2P_SEC_DEVICE_TYPES; 2575 p2p->cfg->num_sec_dev_types = num_dev_types; 2576 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2577 return 0; 2578} 2579 2580 2581void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2582{ 2583 int i; 2584 2585 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2586 wpabuf_free(p2p->wps_vendor_ext[i]); 2587 p2p->wps_vendor_ext[i] = NULL; 2588 } 2589} 2590 2591 2592int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2593 const struct wpabuf *vendor_ext) 2594{ 2595 int i; 2596 2597 if (vendor_ext == NULL) 2598 return -1; 2599 2600 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2601 if (p2p->wps_vendor_ext[i] == NULL) 2602 break; 2603 } 2604 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2605 return -1; 2606 2607 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2608 if (p2p->wps_vendor_ext[i] == NULL) 2609 return -1; 2610 2611 return 0; 2612} 2613 2614 2615int p2p_set_country(struct p2p_data *p2p, const char *country) 2616{ 2617 os_memcpy(p2p->cfg->country, country, 3); 2618 return 0; 2619} 2620 2621 2622void p2p_continue_find(struct p2p_data *p2p) 2623{ 2624 struct p2p_device *dev; 2625 p2p_set_state(p2p, P2P_SEARCH); 2626 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2627 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2628 if (p2p_start_sd(p2p, dev) == 0) 2629 return; 2630 else 2631 break; 2632 } else if (dev->req_config_methods && 2633 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2634 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2635 "pending Provision Discovery Request to " 2636 MACSTR " (config methods 0x%x)", 2637 MAC2STR(dev->info.p2p_device_addr), 2638 dev->req_config_methods); 2639 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2640 return; 2641 } 2642 } 2643 2644 p2p_listen_in_find(p2p, 1); 2645} 2646 2647 2648static void p2p_sd_cb(struct p2p_data *p2p, int success) 2649{ 2650 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2651 "P2P: Service Discovery Query TX callback: success=%d", 2652 success); 2653 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2654 2655 if (!success) { 2656 if (p2p->sd_peer) { 2657 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2658 p2p->sd_peer = NULL; 2659 } 2660 p2p_continue_find(p2p); 2661 return; 2662 } 2663 2664 if (p2p->sd_peer == NULL) { 2665 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2666 "P2P: No SD peer entry known"); 2667 p2p_continue_find(p2p); 2668 return; 2669 } 2670 2671 /* Wait for response from the peer */ 2672 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2673 p2p_set_timeout(p2p, 0, 200000); 2674} 2675 2676 2677/** 2678 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2679 * @p2p: P2P module context from p2p_init() 2680 */ 2681static void p2p_retry_pd(struct p2p_data *p2p) 2682{ 2683 struct p2p_device *dev; 2684 2685 if (p2p->state != P2P_IDLE) 2686 return; 2687 2688 /* 2689 * Retry the prov disc req attempt only for the peer that the user had 2690 * requested. 2691 */ 2692 2693 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2694 if (os_memcmp(p2p->pending_pd_devaddr, 2695 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2696 continue; 2697 if (!dev->req_config_methods) 2698 continue; 2699 2700 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2701 "pending Provision Discovery Request to " 2702 MACSTR " (config methods 0x%x)", 2703 MAC2STR(dev->info.p2p_device_addr), 2704 dev->req_config_methods); 2705 p2p_send_prov_disc_req(p2p, dev, 2706 dev->flags & P2P_DEV_PD_FOR_JOIN, 0); 2707 return; 2708 } 2709} 2710 2711 2712static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2713{ 2714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2715 "P2P: Provision Discovery Request TX callback: success=%d", 2716 success); 2717 2718 /* 2719 * Postpone resetting the pending action state till after we actually 2720 * time out. This allows us to take some action like notifying any 2721 * interested parties about no response to the request. 2722 * 2723 * When the timer (below) goes off we check in IDLE, SEARCH, or 2724 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2725 * requests in, if this was still pending and then raise notification. 2726 */ 2727 2728 if (!success) { 2729 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2730 2731 if (p2p->user_initiated_pd && 2732 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2733 { 2734 /* Retry request from timeout to avoid busy loops */ 2735 p2p->pending_action_state = P2P_PENDING_PD; 2736 p2p_set_timeout(p2p, 0, 50000); 2737 } else if (p2p->state != P2P_IDLE) 2738 p2p_continue_find(p2p); 2739 else if (p2p->user_initiated_pd) { 2740 p2p->pending_action_state = P2P_PENDING_PD; 2741 p2p_set_timeout(p2p, 0, 300000); 2742 } 2743 return; 2744 } 2745 2746 /* 2747 * This postponing, of resetting pending_action_state, needs to be 2748 * done only for user initiated PD requests and not internal ones. 2749 */ 2750 if (p2p->user_initiated_pd) 2751 p2p->pending_action_state = P2P_PENDING_PD; 2752 else 2753 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2754 2755 /* Wait for response from the peer */ 2756 if (p2p->state == P2P_SEARCH) 2757 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2758 p2p_set_timeout(p2p, 0, 200000); 2759} 2760 2761 2762int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2763 unsigned int age, int level, const u8 *ies, 2764 size_t ies_len) 2765{ 2766 p2p_add_device(p2p, bssid, freq, age, level, ies, ies_len, 1); 2767 2768 return 0; 2769} 2770 2771 2772void p2p_scan_res_handled(struct p2p_data *p2p) 2773{ 2774 if (!p2p->p2p_scan_running) { 2775 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not " 2776 "running, but scan results received"); 2777 } 2778 p2p->p2p_scan_running = 0; 2779 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2780 2781 if (p2p_run_after_scan(p2p)) 2782 return; 2783 if (p2p->state == P2P_SEARCH) 2784 p2p_continue_find(p2p); 2785} 2786 2787 2788void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2789{ 2790 u8 *len; 2791 2792#ifdef CONFIG_WIFI_DISPLAY 2793 if (p2p->wfd_ie_probe_req) 2794 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2795#endif /* CONFIG_WIFI_DISPLAY */ 2796 2797 len = p2p_buf_add_ie_hdr(ies); 2798 p2p_buf_add_capability(ies, p2p->dev_capab & 2799 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2800 if (dev_id) 2801 p2p_buf_add_device_id(ies, dev_id); 2802 if (p2p->cfg->reg_class && p2p->cfg->channel) 2803 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2804 p2p->cfg->reg_class, 2805 p2p->cfg->channel); 2806 if (p2p->ext_listen_interval) 2807 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2808 p2p->ext_listen_interval); 2809 /* TODO: p2p_buf_add_operating_channel() if GO */ 2810 p2p_buf_update_ie_hdr(ies, len); 2811} 2812 2813 2814size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2815{ 2816 size_t len = 100; 2817 2818#ifdef CONFIG_WIFI_DISPLAY 2819 if (p2p && p2p->wfd_ie_probe_req) 2820 len += wpabuf_len(p2p->wfd_ie_probe_req); 2821#endif /* CONFIG_WIFI_DISPLAY */ 2822 2823 return len; 2824} 2825 2826 2827int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2828{ 2829 return p2p_attr_text(p2p_ie, buf, end); 2830} 2831 2832 2833static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2834{ 2835 struct p2p_device *dev = p2p->go_neg_peer; 2836 2837 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2838 "P2P: GO Negotiation Request TX callback: success=%d", 2839 success); 2840 2841 if (dev == NULL) { 2842 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2843 "P2P: No pending GO Negotiation"); 2844 return; 2845 } 2846 2847 if (success) { 2848 if (dev->flags & P2P_DEV_USER_REJECTED) { 2849 p2p_set_state(p2p, P2P_IDLE); 2850 return; 2851 } 2852 } else if (dev->go_neg_req_sent) { 2853 /* Cancel the increment from p2p_connect_send() on failure */ 2854 dev->go_neg_req_sent--; 2855 } 2856 2857 if (!success && 2858 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2859 !is_zero_ether_addr(dev->member_in_go_dev)) { 2860 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2861 "P2P: Peer " MACSTR " did not acknowledge request - " 2862 "try to use device discoverability through its GO", 2863 MAC2STR(dev->info.p2p_device_addr)); 2864 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2865 p2p_send_dev_disc_req(p2p, dev); 2866 return; 2867 } 2868 2869 /* 2870 * Use P2P find, if needed, to find the other device from its listen 2871 * channel. 2872 */ 2873 p2p_set_state(p2p, P2P_CONNECT); 2874 p2p_set_timeout(p2p, 0, success ? 200000 : 100000); 2875} 2876 2877 2878static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2879{ 2880 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2881 "P2P: GO Negotiation Response TX callback: success=%d", 2882 success); 2883 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2884 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2885 "P2P: Ignore TX callback event - GO Negotiation is " 2886 "not running anymore"); 2887 return; 2888 } 2889 p2p_set_state(p2p, P2P_CONNECT); 2890 p2p_set_timeout(p2p, 0, 250000); 2891} 2892 2893 2894static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success) 2895{ 2896 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2897 "P2P: GO Negotiation Response (failure) TX callback: " 2898 "success=%d", success); 2899 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2900 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2901 p2p->go_neg_peer->status); 2902 } 2903} 2904 2905 2906static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 2907 enum p2p_send_action_result result) 2908{ 2909 struct p2p_device *dev; 2910 2911 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2912 "P2P: GO Negotiation Confirm TX callback: result=%d", 2913 result); 2914 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2915 if (result == P2P_SEND_ACTION_FAILED) { 2916 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 2917 return; 2918 } 2919 if (result == P2P_SEND_ACTION_NO_ACK) { 2920 /* 2921 * It looks like the TX status for GO Negotiation Confirm is 2922 * often showing failure even when the peer has actually 2923 * received the frame. Since the peer may change channels 2924 * immediately after having received the frame, we may not see 2925 * an Ack for retries, so just dropping a single frame may 2926 * trigger this. To allow the group formation to succeed if the 2927 * peer did indeed receive the frame, continue regardless of 2928 * the TX status. 2929 */ 2930 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2931 "P2P: Assume GO Negotiation Confirm TX was actually " 2932 "received by the peer even though Ack was not " 2933 "reported"); 2934 } 2935 2936 dev = p2p->go_neg_peer; 2937 if (dev == NULL) 2938 return; 2939 2940 p2p_go_complete(p2p, dev); 2941} 2942 2943 2944void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 2945 const u8 *src, const u8 *bssid, 2946 enum p2p_send_action_result result) 2947{ 2948 enum p2p_pending_action_state state; 2949 int success; 2950 2951 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2952 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR 2953 " src=" MACSTR " bssid=" MACSTR " result=%d", 2954 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 2955 MAC2STR(bssid), result); 2956 success = result == P2P_SEND_ACTION_SUCCESS; 2957 state = p2p->pending_action_state; 2958 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2959 switch (state) { 2960 case P2P_NO_PENDING_ACTION: 2961 break; 2962 case P2P_PENDING_GO_NEG_REQUEST: 2963 p2p_go_neg_req_cb(p2p, success); 2964 break; 2965 case P2P_PENDING_GO_NEG_RESPONSE: 2966 p2p_go_neg_resp_cb(p2p, success); 2967 break; 2968 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 2969 p2p_go_neg_resp_failure_cb(p2p, success); 2970 break; 2971 case P2P_PENDING_GO_NEG_CONFIRM: 2972 p2p_go_neg_conf_cb(p2p, result); 2973 break; 2974 case P2P_PENDING_SD: 2975 p2p_sd_cb(p2p, success); 2976 break; 2977 case P2P_PENDING_PD: 2978 p2p_prov_disc_cb(p2p, success); 2979 break; 2980 case P2P_PENDING_INVITATION_REQUEST: 2981 p2p_invitation_req_cb(p2p, success); 2982 break; 2983 case P2P_PENDING_INVITATION_RESPONSE: 2984 p2p_invitation_resp_cb(p2p, success); 2985 break; 2986 case P2P_PENDING_DEV_DISC_REQUEST: 2987 p2p_dev_disc_req_cb(p2p, success); 2988 break; 2989 case P2P_PENDING_DEV_DISC_RESPONSE: 2990 p2p_dev_disc_resp_cb(p2p, success); 2991 break; 2992 case P2P_PENDING_GO_DISC_REQ: 2993 p2p_go_disc_req_cb(p2p, success); 2994 break; 2995 } 2996} 2997 2998 2999void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3000 unsigned int duration) 3001{ 3002 if (freq == p2p->pending_client_disc_freq) { 3003 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3004 "P2P: Client discoverability remain-awake completed"); 3005 p2p->pending_client_disc_freq = 0; 3006 return; 3007 } 3008 3009 if (freq != p2p->pending_listen_freq) { 3010 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3011 "P2P: Unexpected listen callback for freq=%u " 3012 "duration=%u (pending_listen_freq=%u)", 3013 freq, duration, p2p->pending_listen_freq); 3014 return; 3015 } 3016 3017 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3018 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on " 3019 "callback", 3020 p2p->pending_listen_sec, p2p->pending_listen_usec, 3021 p2p->pending_listen_freq); 3022 p2p->in_listen = 1; 3023 p2p->drv_in_listen = freq; 3024 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3025 /* 3026 * Add 20 msec extra wait to avoid race condition with driver 3027 * remain-on-channel end event, i.e., give driver more time to 3028 * complete the operation before our timeout expires. 3029 */ 3030 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3031 p2p->pending_listen_usec + 20000); 3032 } 3033 3034 p2p->pending_listen_freq = 0; 3035} 3036 3037 3038int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3039{ 3040 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen " 3041 "state (freq=%u)", freq); 3042 p2p->drv_in_listen = 0; 3043 if (p2p->in_listen) 3044 return 0; /* Internal timeout will trigger the next step */ 3045 3046 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3047 if (p2p->go_neg_peer->connect_reqs >= 120) { 3048 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3049 "P2P: Timeout on sending GO Negotiation " 3050 "Request without getting response"); 3051 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3052 return 0; 3053 } 3054 3055 p2p_set_state(p2p, P2P_CONNECT); 3056 p2p_connect_send(p2p, p2p->go_neg_peer); 3057 return 1; 3058 } else if (p2p->state == P2P_SEARCH) { 3059 if (p2p->p2p_scan_running) { 3060 /* 3061 * Search is already in progress. This can happen if 3062 * an Action frame RX is reported immediately after 3063 * the end of a remain-on-channel operation and the 3064 * response frame to that is sent using an offchannel 3065 * operation while in p2p_find. Avoid an attempt to 3066 * restart a scan here. 3067 */ 3068 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan " 3069 "already in progress - do not try to start a " 3070 "new one"); 3071 return 1; 3072 } 3073 if (p2p->pending_listen_freq) { 3074 /* 3075 * Better wait a bit if the driver is unable to start 3076 * offchannel operation for some reason. p2p_search() 3077 * will be started from internal timeout. 3078 */ 3079 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen " 3080 "operation did not seem to start - delay " 3081 "search phase to avoid busy loop"); 3082 p2p_set_timeout(p2p, 0, 100000); 3083 return 1; 3084 } 3085 if (p2p->search_delay) { 3086 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3087 "search operation by %u ms", 3088 p2p->search_delay); 3089 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3090 (p2p->search_delay % 1000) * 1000); 3091 return 1; 3092 } 3093 p2p_search(p2p); 3094 return 1; 3095 } 3096 3097 return 0; 3098} 3099 3100 3101static void p2p_timeout_connect(struct p2p_data *p2p) 3102{ 3103 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3104 if (p2p->go_neg_peer && 3105 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3106 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO " 3107 "Negotiation Confirm timed out - assume GO " 3108 "Negotiation failed"); 3109 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3110 return; 3111 } 3112 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3113 p2p_listen_in_find(p2p, 0); 3114} 3115 3116 3117static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3118{ 3119 if (p2p->go_neg_peer) { 3120 if (p2p->drv_in_listen) { 3121 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is " 3122 "still in Listen state; wait for it to " 3123 "complete"); 3124 return; 3125 } 3126 3127 if (p2p->go_neg_peer->connect_reqs >= 120) { 3128 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3129 "P2P: Timeout on sending GO Negotiation " 3130 "Request without getting response"); 3131 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3132 return; 3133 } 3134 3135 p2p_set_state(p2p, P2P_CONNECT); 3136 p2p_connect_send(p2p, p2p->go_neg_peer); 3137 } else 3138 p2p_set_state(p2p, P2P_IDLE); 3139} 3140 3141 3142static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3143{ 3144 /* 3145 * TODO: could remain constantly in Listen state for some time if there 3146 * are no other concurrent uses for the radio. For now, go to listen 3147 * state once per second to give other uses a chance to use the radio. 3148 */ 3149 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3150 p2p_set_timeout(p2p, 0, 500000); 3151} 3152 3153 3154static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3155{ 3156 struct p2p_device *dev = p2p->go_neg_peer; 3157 3158 if (dev == NULL) { 3159 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3160 "P2P: Unknown GO Neg peer - stop GO Neg wait"); 3161 return; 3162 } 3163 3164 dev->wait_count++; 3165 if (dev->wait_count >= 120) { 3166 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3167 "P2P: Timeout on waiting peer to become ready for GO " 3168 "Negotiation"); 3169 p2p_go_neg_failed(p2p, dev, -1); 3170 return; 3171 } 3172 3173 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3174 "P2P: Go to Listen state while waiting for the peer to become " 3175 "ready for GO Negotiation"); 3176 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3177 p2p_listen_in_find(p2p, 0); 3178} 3179 3180 3181static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3182{ 3183 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3184 "P2P: Service Discovery Query timeout"); 3185 if (p2p->sd_peer) { 3186 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3187 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3188 p2p->sd_peer = NULL; 3189 } 3190 p2p_continue_find(p2p); 3191} 3192 3193 3194static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3195{ 3196 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3197 "P2P: Provision Discovery Request timeout"); 3198 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3199 p2p_continue_find(p2p); 3200} 3201 3202 3203static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3204{ 3205 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3206 3207 /* 3208 * For user initiated PD requests that we have not gotten any responses 3209 * for while in IDLE state, we retry them a couple of times before 3210 * giving up. 3211 */ 3212 if (!p2p->user_initiated_pd) 3213 return; 3214 3215 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3216 "P2P: User initiated Provision Discovery Request timeout"); 3217 3218 if (p2p->pd_retries) { 3219 p2p->pd_retries--; 3220 p2p_retry_pd(p2p); 3221 } else { 3222 struct p2p_device *dev; 3223 int for_join = 0; 3224 3225 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3226 if (os_memcmp(p2p->pending_pd_devaddr, 3227 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3228 continue; 3229 if (dev->req_config_methods && 3230 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3231 for_join = 1; 3232 } 3233 3234 if (p2p->cfg->prov_disc_fail) 3235 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3236 p2p->pending_pd_devaddr, 3237 for_join ? 3238 P2P_PROV_DISC_TIMEOUT_JOIN : 3239 P2P_PROV_DISC_TIMEOUT); 3240 p2p_reset_pending_pd(p2p); 3241 } 3242} 3243 3244 3245static void p2p_timeout_invite(struct p2p_data *p2p) 3246{ 3247 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3248 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3249 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3250 /* 3251 * Better remain on operating channel instead of listen channel 3252 * when running a group. 3253 */ 3254 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in " 3255 "active GO role - wait on operating channel"); 3256 p2p_set_timeout(p2p, 0, 100000); 3257 return; 3258 } 3259 p2p_listen_in_find(p2p, 0); 3260} 3261 3262 3263static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3264{ 3265 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3266 p2p_set_state(p2p, P2P_INVITE); 3267 p2p_invite_send(p2p, p2p->invite_peer, 3268 p2p->invite_go_dev_addr); 3269 } else { 3270 if (p2p->invite_peer) { 3271 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3272 "P2P: Invitation Request retry limit reached"); 3273 if (p2p->cfg->invitation_result) 3274 p2p->cfg->invitation_result( 3275 p2p->cfg->cb_ctx, -1, NULL); 3276 } 3277 p2p_set_state(p2p, P2P_IDLE); 3278 } 3279} 3280 3281 3282static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3283{ 3284 struct p2p_data *p2p = eloop_ctx; 3285 3286 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)", 3287 p2p_state_txt(p2p->state)); 3288 3289 p2p->in_listen = 0; 3290 3291 switch (p2p->state) { 3292 case P2P_IDLE: 3293 /* Check if we timed out waiting for PD req */ 3294 if (p2p->pending_action_state == P2P_PENDING_PD) 3295 p2p_timeout_prov_disc_req(p2p); 3296 break; 3297 case P2P_SEARCH: 3298 /* Check if we timed out waiting for PD req */ 3299 if (p2p->pending_action_state == P2P_PENDING_PD) 3300 p2p_timeout_prov_disc_req(p2p); 3301 if (p2p->search_delay && !p2p->in_search_delay) { 3302 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3303 "search operation by %u ms", 3304 p2p->search_delay); 3305 p2p->in_search_delay = 1; 3306 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3307 (p2p->search_delay % 1000) * 1000); 3308 break; 3309 } 3310 p2p->in_search_delay = 0; 3311 p2p_search(p2p); 3312 break; 3313 case P2P_CONNECT: 3314 p2p_timeout_connect(p2p); 3315 break; 3316 case P2P_CONNECT_LISTEN: 3317 p2p_timeout_connect_listen(p2p); 3318 break; 3319 case P2P_GO_NEG: 3320 break; 3321 case P2P_LISTEN_ONLY: 3322 /* Check if we timed out waiting for PD req */ 3323 if (p2p->pending_action_state == P2P_PENDING_PD) 3324 p2p_timeout_prov_disc_req(p2p); 3325 3326 if (p2p->ext_listen_only) { 3327 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3328 "P2P: Extended Listen Timing - Listen State " 3329 "completed"); 3330 p2p->ext_listen_only = 0; 3331 p2p_set_state(p2p, P2P_IDLE); 3332 } 3333 break; 3334 case P2P_WAIT_PEER_CONNECT: 3335 p2p_timeout_wait_peer_connect(p2p); 3336 break; 3337 case P2P_WAIT_PEER_IDLE: 3338 p2p_timeout_wait_peer_idle(p2p); 3339 break; 3340 case P2P_SD_DURING_FIND: 3341 p2p_timeout_sd_during_find(p2p); 3342 break; 3343 case P2P_PROVISIONING: 3344 break; 3345 case P2P_PD_DURING_FIND: 3346 p2p_timeout_prov_disc_during_find(p2p); 3347 break; 3348 case P2P_INVITE: 3349 p2p_timeout_invite(p2p); 3350 break; 3351 case P2P_INVITE_LISTEN: 3352 p2p_timeout_invite_listen(p2p); 3353 break; 3354 case P2P_SEARCH_WHEN_READY: 3355 break; 3356 case P2P_CONTINUE_SEARCH_WHEN_READY: 3357 break; 3358 } 3359} 3360 3361 3362int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3363{ 3364 struct p2p_device *dev; 3365 3366 dev = p2p_get_device(p2p, peer_addr); 3367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject " 3368 "connection attempts by peer " MACSTR, MAC2STR(peer_addr)); 3369 if (dev == NULL) { 3370 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR 3371 " unknown", MAC2STR(peer_addr)); 3372 return -1; 3373 } 3374 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3375 dev->flags |= P2P_DEV_USER_REJECTED; 3376 return 0; 3377} 3378 3379 3380const char * p2p_wps_method_text(enum p2p_wps_method method) 3381{ 3382 switch (method) { 3383 case WPS_NOT_READY: 3384 return "not-ready"; 3385 case WPS_PIN_DISPLAY: 3386 return "Display"; 3387 case WPS_PIN_KEYPAD: 3388 return "Keypad"; 3389 case WPS_PBC: 3390 return "PBC"; 3391 } 3392 3393 return "??"; 3394} 3395 3396 3397static const char * p2p_go_state_text(enum p2p_go_state go_state) 3398{ 3399 switch (go_state) { 3400 case UNKNOWN_GO: 3401 return "unknown"; 3402 case LOCAL_GO: 3403 return "local"; 3404 case REMOTE_GO: 3405 return "remote"; 3406 } 3407 3408 return "??"; 3409} 3410 3411 3412const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3413 const u8 *addr, int next) 3414{ 3415 struct p2p_device *dev; 3416 3417 if (addr) 3418 dev = p2p_get_device(p2p, addr); 3419 else 3420 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3421 3422 if (dev && next) { 3423 dev = dl_list_first(&dev->list, struct p2p_device, list); 3424 if (&dev->list == &p2p->devices) 3425 dev = NULL; 3426 } 3427 3428 if (dev == NULL) 3429 return NULL; 3430 3431 return &dev->info; 3432} 3433 3434 3435int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3436 char *buf, size_t buflen) 3437{ 3438 struct p2p_device *dev; 3439 int res; 3440 char *pos, *end; 3441 struct os_time now; 3442 3443 if (info == NULL) 3444 return -1; 3445 3446 dev = (struct p2p_device *) (((u8 *) info) - 3447 offsetof(struct p2p_device, info)); 3448 3449 pos = buf; 3450 end = buf + buflen; 3451 3452 os_get_time(&now); 3453 res = os_snprintf(pos, end - pos, 3454 "age=%d\n" 3455 "listen_freq=%d\n" 3456 "wps_method=%s\n" 3457 "interface_addr=" MACSTR "\n" 3458 "member_in_go_dev=" MACSTR "\n" 3459 "member_in_go_iface=" MACSTR "\n" 3460 "go_neg_req_sent=%d\n" 3461 "go_state=%s\n" 3462 "dialog_token=%u\n" 3463 "intended_addr=" MACSTR "\n" 3464 "country=%c%c\n" 3465 "oper_freq=%d\n" 3466 "req_config_methods=0x%x\n" 3467 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3468 "status=%d\n" 3469 "wait_count=%u\n" 3470 "invitation_reqs=%u\n", 3471 (int) (now.sec - dev->last_seen.sec), 3472 dev->listen_freq, 3473 p2p_wps_method_text(dev->wps_method), 3474 MAC2STR(dev->interface_addr), 3475 MAC2STR(dev->member_in_go_dev), 3476 MAC2STR(dev->member_in_go_iface), 3477 dev->go_neg_req_sent, 3478 p2p_go_state_text(dev->go_state), 3479 dev->dialog_token, 3480 MAC2STR(dev->intended_addr), 3481 dev->country[0] ? dev->country[0] : '_', 3482 dev->country[1] ? dev->country[1] : '_', 3483 dev->oper_freq, 3484 dev->req_config_methods, 3485 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3486 "[PROBE_REQ_ONLY]" : "", 3487 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3488 dev->flags & P2P_DEV_NOT_YET_READY ? 3489 "[NOT_YET_READY]" : "", 3490 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3491 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3492 "", 3493 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3494 "[PD_PEER_DISPLAY]" : "", 3495 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3496 "[PD_PEER_KEYPAD]" : "", 3497 dev->flags & P2P_DEV_USER_REJECTED ? 3498 "[USER_REJECTED]" : "", 3499 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3500 "[PEER_WAITING_RESPONSE]" : "", 3501 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3502 "[PREFER_PERSISTENT_GROUP]" : "", 3503 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3504 "[WAIT_GO_NEG_RESPONSE]" : "", 3505 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3506 "[WAIT_GO_NEG_CONFIRM]" : "", 3507 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3508 "[GROUP_CLIENT_ONLY]" : "", 3509 dev->flags & P2P_DEV_FORCE_FREQ ? 3510 "[FORCE_FREQ]" : "", 3511 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3512 "[PD_FOR_JOIN]" : "", 3513 dev->status, 3514 dev->wait_count, 3515 dev->invitation_reqs); 3516 if (res < 0 || res >= end - pos) 3517 return pos - buf; 3518 pos += res; 3519 3520 if (dev->ext_listen_period) { 3521 res = os_snprintf(pos, end - pos, 3522 "ext_listen_period=%u\n" 3523 "ext_listen_interval=%u\n", 3524 dev->ext_listen_period, 3525 dev->ext_listen_interval); 3526 if (res < 0 || res >= end - pos) 3527 return pos - buf; 3528 pos += res; 3529 } 3530 3531 if (dev->oper_ssid_len) { 3532 res = os_snprintf(pos, end - pos, 3533 "oper_ssid=%s\n", 3534 wpa_ssid_txt(dev->oper_ssid, 3535 dev->oper_ssid_len)); 3536 if (res < 0 || res >= end - pos) 3537 return pos - buf; 3538 pos += res; 3539 } 3540 3541#ifdef CONFIG_WIFI_DISPLAY 3542 if (dev->info.wfd_subelems) { 3543 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3544 if (res < 0 || res >= end - pos) 3545 return pos - buf; 3546 pos += res; 3547 3548 pos += wpa_snprintf_hex(pos, end - pos, 3549 wpabuf_head(dev->info.wfd_subelems), 3550 wpabuf_len(dev->info.wfd_subelems)); 3551 3552 res = os_snprintf(pos, end - pos, "\n"); 3553 if (res < 0 || res >= end - pos) 3554 return pos - buf; 3555 pos += res; 3556 } 3557#endif /* CONFIG_WIFI_DISPLAY */ 3558 3559 return pos - buf; 3560} 3561 3562 3563int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3564{ 3565 return p2p_get_device(p2p, addr) != NULL; 3566} 3567 3568 3569void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3570{ 3571 if (enabled) { 3572 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3573 "discoverability enabled"); 3574 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3575 } else { 3576 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3577 "discoverability disabled"); 3578 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3579 } 3580} 3581 3582 3583static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3584 u32 duration2, u32 interval2) 3585{ 3586 struct wpabuf *req; 3587 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3588 u8 *len; 3589 3590 req = wpabuf_alloc(100); 3591 if (req == NULL) 3592 return NULL; 3593 3594 if (duration1 || interval1) { 3595 os_memset(&desc1, 0, sizeof(desc1)); 3596 desc1.count_type = 1; 3597 desc1.duration = duration1; 3598 desc1.interval = interval1; 3599 ptr1 = &desc1; 3600 3601 if (duration2 || interval2) { 3602 os_memset(&desc2, 0, sizeof(desc2)); 3603 desc2.count_type = 2; 3604 desc2.duration = duration2; 3605 desc2.interval = interval2; 3606 ptr2 = &desc2; 3607 } 3608 } 3609 3610 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3611 len = p2p_buf_add_ie_hdr(req); 3612 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3613 p2p_buf_update_ie_hdr(req, len); 3614 3615 return req; 3616} 3617 3618 3619int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3620 const u8 *own_interface_addr, unsigned int freq, 3621 u32 duration1, u32 interval1, u32 duration2, 3622 u32 interval2) 3623{ 3624 struct wpabuf *req; 3625 3626 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to " 3627 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u " 3628 "int1=%u dur2=%u int2=%u", 3629 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3630 freq, duration1, interval1, duration2, interval2); 3631 3632 req = p2p_build_presence_req(duration1, interval1, duration2, 3633 interval2); 3634 if (req == NULL) 3635 return -1; 3636 3637 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3638 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3639 go_interface_addr, 3640 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3641 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3642 "P2P: Failed to send Action frame"); 3643 } 3644 wpabuf_free(req); 3645 3646 return 0; 3647} 3648 3649 3650static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3651 size_t noa_len, u8 dialog_token) 3652{ 3653 struct wpabuf *resp; 3654 u8 *len; 3655 3656 resp = wpabuf_alloc(100 + noa_len); 3657 if (resp == NULL) 3658 return NULL; 3659 3660 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3661 len = p2p_buf_add_ie_hdr(resp); 3662 p2p_buf_add_status(resp, status); 3663 if (noa) { 3664 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3665 wpabuf_put_le16(resp, noa_len); 3666 wpabuf_put_data(resp, noa, noa_len); 3667 } else 3668 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3669 p2p_buf_update_ie_hdr(resp, len); 3670 3671 return resp; 3672} 3673 3674 3675static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3676 const u8 *sa, const u8 *data, size_t len, 3677 int rx_freq) 3678{ 3679 struct p2p_message msg; 3680 u8 status; 3681 struct wpabuf *resp; 3682 size_t g; 3683 struct p2p_group *group = NULL; 3684 int parsed = 0; 3685 u8 noa[50]; 3686 int noa_len; 3687 3688 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3689 "P2P: Received P2P Action - P2P Presence Request"); 3690 3691 for (g = 0; g < p2p->num_groups; g++) { 3692 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3693 ETH_ALEN) == 0) { 3694 group = p2p->groups[g]; 3695 break; 3696 } 3697 } 3698 if (group == NULL) { 3699 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3700 "P2P: Ignore P2P Presence Request for unknown group " 3701 MACSTR, MAC2STR(da)); 3702 return; 3703 } 3704 3705 if (p2p_parse(data, len, &msg) < 0) { 3706 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3707 "P2P: Failed to parse P2P Presence Request"); 3708 status = P2P_SC_FAIL_INVALID_PARAMS; 3709 goto fail; 3710 } 3711 parsed = 1; 3712 3713 if (msg.noa == NULL) { 3714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3715 "P2P: No NoA attribute in P2P Presence Request"); 3716 status = P2P_SC_FAIL_INVALID_PARAMS; 3717 goto fail; 3718 } 3719 3720 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3721 3722fail: 3723 if (p2p->cfg->get_noa) 3724 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3725 sizeof(noa)); 3726 else 3727 noa_len = -1; 3728 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3729 noa_len > 0 ? noa_len : 0, 3730 msg.dialog_token); 3731 if (parsed) 3732 p2p_parse_free(&msg); 3733 if (resp == NULL) 3734 return; 3735 3736 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3737 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3738 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3739 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3740 "P2P: Failed to send Action frame"); 3741 } 3742 wpabuf_free(resp); 3743} 3744 3745 3746static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3747 const u8 *sa, const u8 *data, size_t len) 3748{ 3749 struct p2p_message msg; 3750 3751 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3752 "P2P: Received P2P Action - P2P Presence Response"); 3753 3754 if (p2p_parse(data, len, &msg) < 0) { 3755 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3756 "P2P: Failed to parse P2P Presence Response"); 3757 return; 3758 } 3759 3760 if (msg.status == NULL || msg.noa == NULL) { 3761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3762 "P2P: No Status or NoA attribute in P2P Presence " 3763 "Response"); 3764 p2p_parse_free(&msg); 3765 return; 3766 } 3767 3768 if (*msg.status) { 3769 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3770 "P2P: P2P Presence Request was rejected: status %u", 3771 *msg.status); 3772 p2p_parse_free(&msg); 3773 return; 3774 } 3775 3776 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3777 "P2P: P2P Presence Request was accepted"); 3778 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3779 msg.noa, msg.noa_len); 3780 /* TODO: process NoA */ 3781 p2p_parse_free(&msg); 3782} 3783 3784 3785static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3786{ 3787 struct p2p_data *p2p = eloop_ctx; 3788 3789 if (p2p->ext_listen_interval) { 3790 /* Schedule next extended listen timeout */ 3791 eloop_register_timeout(p2p->ext_listen_interval_sec, 3792 p2p->ext_listen_interval_usec, 3793 p2p_ext_listen_timeout, p2p, NULL); 3794 } 3795 3796 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3797 /* 3798 * This should not really happen, but it looks like the Listen 3799 * command may fail is something else (e.g., a scan) was 3800 * running at an inconvenient time. As a workaround, allow new 3801 * Extended Listen operation to be started. 3802 */ 3803 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous " 3804 "Extended Listen operation had not been completed - " 3805 "try again"); 3806 p2p->ext_listen_only = 0; 3807 p2p_set_state(p2p, P2P_IDLE); 3808 } 3809 3810 if (p2p->state != P2P_IDLE) { 3811 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended " 3812 "Listen timeout in active state (%s)", 3813 p2p_state_txt(p2p->state)); 3814 return; 3815 } 3816 3817 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout"); 3818 p2p->ext_listen_only = 1; 3819 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3820 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 3821 "Listen state for Extended Listen Timing"); 3822 p2p->ext_listen_only = 0; 3823 } 3824} 3825 3826 3827int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3828 unsigned int interval) 3829{ 3830 if (period > 65535 || interval > 65535 || period > interval || 3831 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3832 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3833 "P2P: Invalid Extended Listen Timing request: " 3834 "period=%u interval=%u", period, interval); 3835 return -1; 3836 } 3837 3838 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3839 3840 if (interval == 0) { 3841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3842 "P2P: Disabling Extended Listen Timing"); 3843 p2p->ext_listen_period = 0; 3844 p2p->ext_listen_interval = 0; 3845 return 0; 3846 } 3847 3848 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3849 "P2P: Enabling Extended Listen Timing: period %u msec, " 3850 "interval %u msec", period, interval); 3851 p2p->ext_listen_period = period; 3852 p2p->ext_listen_interval = interval; 3853 p2p->ext_listen_interval_sec = interval / 1000; 3854 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3855 3856 eloop_register_timeout(p2p->ext_listen_interval_sec, 3857 p2p->ext_listen_interval_usec, 3858 p2p_ext_listen_timeout, p2p, NULL); 3859 3860 return 0; 3861} 3862 3863 3864void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3865 const u8 *ie, size_t ie_len) 3866{ 3867 struct p2p_message msg; 3868 3869 if (bssid == NULL || ie == NULL) 3870 return; 3871 3872 os_memset(&msg, 0, sizeof(msg)); 3873 if (p2p_parse_ies(ie, ie_len, &msg)) 3874 return; 3875 if (msg.minor_reason_code == NULL) 3876 return; 3877 3878 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3879 "P2P: Deauthentication notification BSSID " MACSTR 3880 " reason_code=%u minor_reason_code=%u", 3881 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3882 3883 p2p_parse_free(&msg); 3884} 3885 3886 3887void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3888 const u8 *ie, size_t ie_len) 3889{ 3890 struct p2p_message msg; 3891 3892 if (bssid == NULL || ie == NULL) 3893 return; 3894 3895 os_memset(&msg, 0, sizeof(msg)); 3896 if (p2p_parse_ies(ie, ie_len, &msg)) 3897 return; 3898 if (msg.minor_reason_code == NULL) 3899 return; 3900 3901 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3902 "P2P: Disassociation notification BSSID " MACSTR 3903 " reason_code=%u minor_reason_code=%u", 3904 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3905 3906 p2p_parse_free(&msg); 3907} 3908 3909 3910void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 3911{ 3912 if (enabled) { 3913 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 3914 "Device operations enabled"); 3915 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 3916 } else { 3917 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 3918 "Device operations disabled"); 3919 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 3920 } 3921} 3922 3923 3924int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 3925{ 3926 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0) 3927 return -1; 3928 3929 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: " 3930 "reg_class %u channel %u", reg_class, channel); 3931 p2p->cfg->reg_class = reg_class; 3932 p2p->cfg->channel = channel; 3933 3934 return 0; 3935} 3936 3937 3938int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 3939{ 3940 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len); 3941 if (postfix == NULL) { 3942 p2p->cfg->ssid_postfix_len = 0; 3943 return 0; 3944 } 3945 if (len > sizeof(p2p->cfg->ssid_postfix)) 3946 return -1; 3947 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 3948 p2p->cfg->ssid_postfix_len = len; 3949 return 0; 3950} 3951 3952 3953int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 3954 int cfg_op_channel) 3955{ 3956 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel) 3957 < 0) 3958 return -1; 3959 3960 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: " 3961 "reg_class %u channel %u", op_reg_class, op_channel); 3962 p2p->cfg->op_reg_class = op_reg_class; 3963 p2p->cfg->op_channel = op_channel; 3964 p2p->cfg->cfg_op_channel = cfg_op_channel; 3965 return 0; 3966} 3967 3968 3969int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 3970 const struct p2p_channel *pref_chan) 3971{ 3972 struct p2p_channel *n; 3973 3974 if (pref_chan) { 3975 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 3976 if (n == NULL) 3977 return -1; 3978 os_memcpy(n, pref_chan, 3979 num_pref_chan * sizeof(struct p2p_channel)); 3980 } else 3981 n = NULL; 3982 3983 os_free(p2p->cfg->pref_chan); 3984 p2p->cfg->pref_chan = n; 3985 p2p->cfg->num_pref_chan = num_pref_chan; 3986 3987 return 0; 3988} 3989 3990 3991int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 3992 u8 *iface_addr) 3993{ 3994 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 3995 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 3996 return -1; 3997 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 3998 return 0; 3999} 4000 4001 4002int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4003 u8 *dev_addr) 4004{ 4005 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4006 if (dev == NULL) 4007 return -1; 4008 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4009 return 0; 4010} 4011 4012 4013void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4014{ 4015 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4016 if (is_zero_ether_addr(p2p->peer_filter)) 4017 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer " 4018 "filter"); 4019 else 4020 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer " 4021 "filter for " MACSTR, MAC2STR(p2p->peer_filter)); 4022} 4023 4024 4025void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4026{ 4027 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s", 4028 enabled ? "enabled" : "disabled"); 4029 if (p2p->cross_connect == enabled) 4030 return; 4031 p2p->cross_connect = enabled; 4032 /* TODO: may need to tear down any action group where we are GO(?) */ 4033} 4034 4035 4036int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4037{ 4038 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4039 if (dev == NULL) 4040 return -1; 4041 if (dev->oper_freq <= 0) 4042 return -1; 4043 return dev->oper_freq; 4044} 4045 4046 4047void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4048{ 4049 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s", 4050 enabled ? "enabled" : "disabled"); 4051 p2p->cfg->p2p_intra_bss = enabled; 4052} 4053 4054 4055void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4056{ 4057 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list"); 4058 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4059} 4060 4061 4062int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4063 const u8 *src, const u8 *bssid, const u8 *buf, 4064 size_t len, unsigned int wait_time) 4065{ 4066 if (p2p->p2p_scan_running) { 4067 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action " 4068 "frame TX until p2p_scan completes"); 4069 if (p2p->after_scan_tx) { 4070 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 4071 "previous pending Action frame TX"); 4072 os_free(p2p->after_scan_tx); 4073 } 4074 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4075 len); 4076 if (p2p->after_scan_tx == NULL) 4077 return -1; 4078 p2p->after_scan_tx->freq = freq; 4079 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4080 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4081 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4082 p2p->after_scan_tx->len = len; 4083 p2p->after_scan_tx->wait_time = wait_time; 4084 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4085 return 0; 4086 } 4087 4088 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4089 buf, len, wait_time); 4090} 4091 4092 4093void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4094 int freq_overall) 4095{ 4096 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d," 4097 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall); 4098 p2p->best_freq_24 = freq_24; 4099 p2p->best_freq_5 = freq_5; 4100 p2p->best_freq_overall = freq_overall; 4101} 4102 4103 4104const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4105{ 4106 if (p2p == NULL || p2p->go_neg_peer == NULL) 4107 return NULL; 4108 return p2p->go_neg_peer->info.p2p_device_addr; 4109} 4110 4111 4112const struct p2p_peer_info * 4113p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4114{ 4115 struct p2p_device *dev; 4116 4117 if (addr) { 4118 dev = p2p_get_device(p2p, addr); 4119 if (!dev) 4120 return NULL; 4121 4122 if (!next) { 4123 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4124 return NULL; 4125 4126 return &dev->info; 4127 } else { 4128 do { 4129 dev = dl_list_first(&dev->list, 4130 struct p2p_device, 4131 list); 4132 if (&dev->list == &p2p->devices) 4133 return NULL; 4134 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4135 } 4136 } else { 4137 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4138 if (!dev) 4139 return NULL; 4140 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4141 dev = dl_list_first(&dev->list, 4142 struct p2p_device, 4143 list); 4144 if (&dev->list == &p2p->devices) 4145 return NULL; 4146 } 4147 } 4148 4149 return &dev->info; 4150} 4151 4152 4153int p2p_in_progress(struct p2p_data *p2p) 4154{ 4155 if (p2p == NULL) 4156 return 0; 4157 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4158 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4159 return 2; 4160 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4161} 4162 4163 4164void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4165 u8 client_timeout) 4166{ 4167 if (p2p) { 4168 p2p->go_timeout = go_timeout; 4169 p2p->client_timeout = client_timeout; 4170 } 4171} 4172 4173 4174void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4175{ 4176 if (p2p && p2p->search_delay < delay) 4177 p2p->search_delay = delay; 4178} 4179 4180 4181#ifdef CONFIG_WIFI_DISPLAY 4182 4183static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4184{ 4185 size_t g; 4186 struct p2p_group *group; 4187 4188 for (g = 0; g < p2p->num_groups; g++) { 4189 group = p2p->groups[g]; 4190 p2p_group_update_ies(group); 4191 } 4192} 4193 4194 4195int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4196{ 4197 wpabuf_free(p2p->wfd_ie_beacon); 4198 p2p->wfd_ie_beacon = ie; 4199 p2p_update_wfd_ie_groups(p2p); 4200 return 0; 4201} 4202 4203 4204int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4205{ 4206 wpabuf_free(p2p->wfd_ie_probe_req); 4207 p2p->wfd_ie_probe_req = ie; 4208 return 0; 4209} 4210 4211 4212int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4213{ 4214 wpabuf_free(p2p->wfd_ie_probe_resp); 4215 p2p->wfd_ie_probe_resp = ie; 4216 p2p_update_wfd_ie_groups(p2p); 4217 return 0; 4218} 4219 4220 4221int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4222{ 4223 wpabuf_free(p2p->wfd_ie_assoc_req); 4224 p2p->wfd_ie_assoc_req = ie; 4225 return 0; 4226} 4227 4228 4229int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4230{ 4231 wpabuf_free(p2p->wfd_ie_invitation); 4232 p2p->wfd_ie_invitation = ie; 4233 return 0; 4234} 4235 4236 4237int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4238{ 4239 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4240 p2p->wfd_ie_prov_disc_req = ie; 4241 return 0; 4242} 4243 4244 4245int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4246{ 4247 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4248 p2p->wfd_ie_prov_disc_resp = ie; 4249 return 0; 4250} 4251 4252 4253int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4254{ 4255 wpabuf_free(p2p->wfd_ie_go_neg); 4256 p2p->wfd_ie_go_neg = ie; 4257 return 0; 4258} 4259 4260 4261int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4262{ 4263 wpabuf_free(p2p->wfd_dev_info); 4264 if (elem) { 4265 p2p->wfd_dev_info = wpabuf_dup(elem); 4266 if (p2p->wfd_dev_info == NULL) 4267 return -1; 4268 } else 4269 p2p->wfd_dev_info = NULL; 4270 4271 return 0; 4272} 4273 4274 4275int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4276{ 4277 wpabuf_free(p2p->wfd_assoc_bssid); 4278 if (elem) { 4279 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4280 if (p2p->wfd_assoc_bssid == NULL) 4281 return -1; 4282 } else 4283 p2p->wfd_assoc_bssid = NULL; 4284 4285 return 0; 4286} 4287 4288 4289int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4290 const struct wpabuf *elem) 4291{ 4292 wpabuf_free(p2p->wfd_coupled_sink_info); 4293 if (elem) { 4294 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4295 if (p2p->wfd_coupled_sink_info == NULL) 4296 return -1; 4297 } else 4298 p2p->wfd_coupled_sink_info = NULL; 4299 4300 return 0; 4301} 4302 4303#endif /* CONFIG_WIFI_DISPLAY */ 4304 4305 4306int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4307 int max_disc_tu) 4308{ 4309 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4310 return -1; 4311 4312 p2p->min_disc_int = min_disc_int; 4313 p2p->max_disc_int = max_disc_int; 4314 p2p->max_disc_tu = max_disc_tu; 4315 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: " 4316 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int, 4317 max_disc_tu); 4318 4319 return 0; 4320} 4321