p2p.c revision 4742246a973a8d1939da0b40018ddb57a470aba5
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 "wps/wps_i.h" 16#include "p2p_i.h" 17#include "p2p.h" 18 19 20static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 21static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 22static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 23 const u8 *sa, const u8 *data, size_t len, 24 int rx_freq); 25static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 26 const u8 *sa, const u8 *data, 27 size_t len); 28static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 29static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 30 31 32/* 33 * p2p_scan recovery timeout 34 * 35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 36 * timeout for this to avoid hitting P2P timeout unnecessarily. 37 */ 38#define P2P_SCAN_TIMEOUT 35 39 40/** 41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 42 * entries will be removed 43 */ 44#ifdef ANDROID_P2P 45#define P2P_PEER_EXPIRATION_AGE 30 46#else 47#define P2P_PEER_EXPIRATION_AGE 300 48#endif 49 50#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2) 51 52#ifdef ANDROID_P2P 53int p2p_connection_in_progress(struct p2p_data *p2p) 54{ 55 int ret = 0; 56 57 switch (p2p->state) { 58 case P2P_CONNECT: 59 case P2P_CONNECT_LISTEN: 60 case P2P_GO_NEG: 61 case P2P_WAIT_PEER_CONNECT: 62 case P2P_WAIT_PEER_IDLE: 63 case P2P_PROVISIONING: 64 case P2P_INVITE: 65 case P2P_INVITE_LISTEN: 66 ret = 1; 67 break; 68 69 default: 70 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state); 71 ret = 0; 72 } 73 74 return ret; 75} 76#endif 77 78static void p2p_expire_peers(struct p2p_data *p2p) 79{ 80 struct p2p_device *dev, *n; 81 struct os_reltime now; 82 size_t i; 83 84 os_get_reltime(&now); 85 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 86 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 87 continue; 88 89 if (p2p->cfg->go_connected && 90 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 91 dev->info.p2p_device_addr)) { 92 /* 93 * We are connected as a client to a group in which the 94 * peer is the GO, so do not expire the peer entry. 95 */ 96 os_get_reltime(&dev->last_seen); 97 continue; 98 } 99 100 for (i = 0; i < p2p->num_groups; i++) { 101 if (p2p_group_is_client_connected( 102 p2p->groups[i], dev->info.p2p_device_addr)) 103 break; 104 } 105 if (i < p2p->num_groups) { 106 /* 107 * The peer is connected as a client in a group where 108 * we are the GO, so do not expire the peer entry. 109 */ 110 os_get_reltime(&dev->last_seen); 111 continue; 112 } 113 114#ifdef ANDROID_P2P 115 /* If Connection is in progress, don't expire the peer 116 */ 117 if (p2p_connection_in_progress(p2p)) 118 continue; 119#endif 120 121 p2p_dbg(p2p, "Expiring old peer entry " MACSTR, 122 MAC2STR(dev->info.p2p_device_addr)); 123 dl_list_del(&dev->list); 124 p2p_device_free(p2p, dev); 125 } 126} 127 128 129static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx) 130{ 131 struct p2p_data *p2p = eloop_ctx; 132 p2p_expire_peers(p2p); 133 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 134 p2p_expiration_timeout, p2p, NULL); 135} 136 137 138static const char * p2p_state_txt(int state) 139{ 140 switch (state) { 141 case P2P_IDLE: 142 return "IDLE"; 143 case P2P_SEARCH: 144 return "SEARCH"; 145 case P2P_CONNECT: 146 return "CONNECT"; 147 case P2P_CONNECT_LISTEN: 148 return "CONNECT_LISTEN"; 149 case P2P_GO_NEG: 150 return "GO_NEG"; 151 case P2P_LISTEN_ONLY: 152 return "LISTEN_ONLY"; 153 case P2P_WAIT_PEER_CONNECT: 154 return "WAIT_PEER_CONNECT"; 155 case P2P_WAIT_PEER_IDLE: 156 return "WAIT_PEER_IDLE"; 157 case P2P_SD_DURING_FIND: 158 return "SD_DURING_FIND"; 159 case P2P_PROVISIONING: 160 return "PROVISIONING"; 161 case P2P_PD_DURING_FIND: 162 return "PD_DURING_FIND"; 163 case P2P_INVITE: 164 return "INVITE"; 165 case P2P_INVITE_LISTEN: 166 return "INVITE_LISTEN"; 167 default: 168 return "?"; 169 } 170} 171 172 173const char * p2p_get_state_txt(struct p2p_data *p2p) 174{ 175 return p2p_state_txt(p2p->state); 176} 177 178 179u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 180{ 181 struct p2p_device *dev = NULL; 182 183 if (!addr || !p2p) 184 return 0; 185 186 dev = p2p_get_device(p2p, addr); 187 if (dev) 188 return dev->wps_prov_info; 189 else 190 return 0; 191} 192 193 194void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 195{ 196 struct p2p_device *dev = NULL; 197 198 if (!addr || !p2p) 199 return; 200 201 dev = p2p_get_device(p2p, addr); 202 if (dev) 203 dev->wps_prov_info = 0; 204} 205 206 207void p2p_set_state(struct p2p_data *p2p, int new_state) 208{ 209 p2p_dbg(p2p, "State %s -> %s", 210 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 211 p2p->state = new_state; 212} 213 214 215void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 216{ 217 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec", 218 p2p_state_txt(p2p->state), sec, usec); 219 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 220 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 221} 222 223 224void p2p_clear_timeout(struct p2p_data *p2p) 225{ 226 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state)); 227 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 228} 229 230 231void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, 232 int status) 233{ 234 struct p2p_go_neg_results res; 235 p2p_clear_timeout(p2p); 236 p2p_set_state(p2p, P2P_IDLE); 237 if (p2p->go_neg_peer) { 238 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 239 p2p->go_neg_peer->wps_method = WPS_NOT_READY; 240 } 241 p2p->go_neg_peer = NULL; 242 243 os_memset(&res, 0, sizeof(res)); 244 res.status = status; 245 if (peer) { 246 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 247 ETH_ALEN); 248 os_memcpy(res.peer_interface_addr, peer->intended_addr, 249 ETH_ALEN); 250 } 251 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 252} 253 254 255static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 256{ 257 unsigned int r, tu; 258 int freq; 259 struct wpabuf *ies; 260 261 p2p_dbg(p2p, "Starting short listen state (state=%s)", 262 p2p_state_txt(p2p->state)); 263 264 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 265 if (freq < 0) { 266 p2p_dbg(p2p, "Unknown regulatory class/channel"); 267 return; 268 } 269 270 os_get_random((u8 *) &r, sizeof(r)); 271 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 272 p2p->min_disc_int) * 100; 273 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 274 tu = p2p->max_disc_tu; 275 if (!dev_disc && tu < 100) 276 tu = 100; /* Need to wait in non-device discovery use cases */ 277 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 278 tu = p2p->cfg->max_listen * 1000 / 1024; 279 280 if (tu == 0) { 281 p2p_dbg(p2p, "Skip listen state since duration was 0 TU"); 282 p2p_set_timeout(p2p, 0, 0); 283 return; 284 } 285 286 p2p->pending_listen_freq = freq; 287 p2p->pending_listen_sec = 0; 288 p2p->pending_listen_usec = 1024 * tu; 289 290 ies = p2p_build_probe_resp_ies(p2p); 291 if (ies == NULL) 292 return; 293 294 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 295 ies) < 0) { 296 p2p_dbg(p2p, "Failed to start listen mode"); 297 p2p->pending_listen_freq = 0; 298 } 299 wpabuf_free(ies); 300} 301 302 303int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 304{ 305 int freq; 306 struct wpabuf *ies; 307 308 p2p_dbg(p2p, "Going to listen(only) state"); 309 310 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 311 if (freq < 0) { 312 p2p_dbg(p2p, "Unknown regulatory class/channel"); 313 return -1; 314 } 315 316 p2p->pending_listen_freq = freq; 317 p2p->pending_listen_sec = timeout / 1000; 318 p2p->pending_listen_usec = (timeout % 1000) * 1000; 319 320 if (p2p->p2p_scan_running) { 321 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 322 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen"); 323 return 0; 324 } 325 p2p_dbg(p2p, "p2p_scan running - delay start of listen state"); 326 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 327 return 0; 328 } 329 330 ies = p2p_build_probe_resp_ies(p2p); 331 if (ies == NULL) 332 return -1; 333 334 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 335 p2p_dbg(p2p, "Failed to start listen mode"); 336 p2p->pending_listen_freq = 0; 337 wpabuf_free(ies); 338 return -1; 339 } 340 wpabuf_free(ies); 341 342 p2p_set_state(p2p, P2P_LISTEN_ONLY); 343 344 return 0; 345} 346 347 348static void p2p_device_clear_reported(struct p2p_data *p2p) 349{ 350 struct p2p_device *dev; 351 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 352 dev->flags &= ~P2P_DEV_REPORTED; 353} 354 355 356/** 357 * p2p_get_device - Fetch a peer entry 358 * @p2p: P2P module context from p2p_init() 359 * @addr: P2P Device Address of the peer 360 * Returns: Pointer to the device entry or %NULL if not found 361 */ 362struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 363{ 364 struct p2p_device *dev; 365 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 366 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 367 return dev; 368 } 369 return NULL; 370} 371 372 373/** 374 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 375 * @p2p: P2P module context from p2p_init() 376 * @addr: P2P Interface Address of the peer 377 * Returns: Pointer to the device entry or %NULL if not found 378 */ 379struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 380 const u8 *addr) 381{ 382 struct p2p_device *dev; 383 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 384 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 385 return dev; 386 } 387 return NULL; 388} 389 390 391/** 392 * p2p_create_device - Create a peer entry 393 * @p2p: P2P module context from p2p_init() 394 * @addr: P2P Device Address of the peer 395 * Returns: Pointer to the device entry or %NULL on failure 396 * 397 * If there is already an entry for the peer, it will be returned instead of 398 * creating a new one. 399 */ 400static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 401 const u8 *addr) 402{ 403 struct p2p_device *dev, *oldest = NULL; 404 size_t count = 0; 405 406 dev = p2p_get_device(p2p, addr); 407 if (dev) 408 return dev; 409 410 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 411 count++; 412 if (oldest == NULL || 413 os_reltime_before(&dev->last_seen, &oldest->last_seen)) 414 oldest = dev; 415 } 416 if (count + 1 > p2p->cfg->max_peers && oldest) { 417 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer"); 418 dl_list_del(&oldest->list); 419 p2p_device_free(p2p, oldest); 420 } 421 422 dev = os_zalloc(sizeof(*dev)); 423 if (dev == NULL) 424 return NULL; 425 dl_list_add(&p2p->devices, &dev->list); 426 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 427 428 return dev; 429} 430 431 432static void p2p_copy_client_info(struct p2p_device *dev, 433 struct p2p_client_info *cli) 434{ 435 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 436 dev->info.device_name[cli->dev_name_len] = '\0'; 437 dev->info.dev_capab = cli->dev_capab; 438 dev->info.config_methods = cli->config_methods; 439 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 440 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 441 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 442 dev->info.wps_sec_dev_type_list_len); 443} 444 445 446static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 447 const u8 *go_interface_addr, int freq, 448 const u8 *gi, size_t gi_len) 449{ 450 struct p2p_group_info info; 451 size_t c; 452 struct p2p_device *dev; 453 454 if (gi == NULL) 455 return 0; 456 457 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 458 return -1; 459 460 /* 461 * Clear old data for this group; if the devices are still in the 462 * group, the information will be restored in the loop following this. 463 */ 464 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 465 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 466 ETH_ALEN) == 0) { 467 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 468 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 469 } 470 } 471 472 for (c = 0; c < info.num_clients; c++) { 473 struct p2p_client_info *cli = &info.client[c]; 474 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 475 ETH_ALEN) == 0) 476 continue; /* ignore our own entry */ 477 dev = p2p_get_device(p2p, cli->p2p_device_addr); 478 if (dev) { 479 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 480 P2P_DEV_PROBE_REQ_ONLY)) { 481 /* 482 * Update information since we have not 483 * received this directly from the client. 484 */ 485 p2p_copy_client_info(dev, cli); 486 } else { 487 /* 488 * Need to update P2P Client Discoverability 489 * flag since it is valid only in P2P Group 490 * Info attribute. 491 */ 492 dev->info.dev_capab &= 493 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 494 dev->info.dev_capab |= 495 cli->dev_capab & 496 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 497 } 498 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 499 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 500 } 501 } else { 502 dev = p2p_create_device(p2p, cli->p2p_device_addr); 503 if (dev == NULL) 504 continue; 505 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 506 p2p_copy_client_info(dev, cli); 507 dev->oper_freq = freq; 508 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 509 dev->info.p2p_device_addr, 510 &dev->info, 1); 511 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 512 } 513 514 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 515 ETH_ALEN); 516 os_get_reltime(&dev->last_seen); 517 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 518 os_memcpy(dev->member_in_go_iface, go_interface_addr, 519 ETH_ALEN); 520 } 521 522 return 0; 523} 524 525 526static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev, 527 int probe_req, const struct p2p_message *msg) 528{ 529 os_memcpy(dev->info.device_name, msg->device_name, 530 sizeof(dev->info.device_name)); 531 532 if (msg->manufacturer && 533 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 534 os_memset(dev->info.manufacturer, 0, 535 sizeof(dev->info.manufacturer)); 536 os_memcpy(dev->info.manufacturer, msg->manufacturer, 537 msg->manufacturer_len); 538 } 539 540 if (msg->model_name && 541 msg->model_name_len < sizeof(dev->info.model_name)) { 542 os_memset(dev->info.model_name, 0, 543 sizeof(dev->info.model_name)); 544 os_memcpy(dev->info.model_name, msg->model_name, 545 msg->model_name_len); 546 } 547 548 if (msg->model_number && 549 msg->model_number_len < sizeof(dev->info.model_number)) { 550 os_memset(dev->info.model_number, 0, 551 sizeof(dev->info.model_number)); 552 os_memcpy(dev->info.model_number, msg->model_number, 553 msg->model_number_len); 554 } 555 556 if (msg->serial_number && 557 msg->serial_number_len < sizeof(dev->info.serial_number)) { 558 os_memset(dev->info.serial_number, 0, 559 sizeof(dev->info.serial_number)); 560 os_memcpy(dev->info.serial_number, msg->serial_number, 561 msg->serial_number_len); 562 } 563 564 if (msg->pri_dev_type) 565 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 566 sizeof(dev->info.pri_dev_type)); 567 else if (msg->wps_pri_dev_type) 568 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 569 sizeof(dev->info.pri_dev_type)); 570 571 if (msg->wps_sec_dev_type_list) { 572 os_memcpy(dev->info.wps_sec_dev_type_list, 573 msg->wps_sec_dev_type_list, 574 msg->wps_sec_dev_type_list_len); 575 dev->info.wps_sec_dev_type_list_len = 576 msg->wps_sec_dev_type_list_len; 577 } 578 579 if (msg->capability) { 580 /* 581 * P2P Client Discoverability bit is reserved in all frames 582 * that use this function, so do not change its value here. 583 */ 584 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 585 dev->info.dev_capab |= msg->capability[0] & 586 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 587 dev->info.group_capab = msg->capability[1]; 588 } 589 590 if (msg->ext_listen_timing) { 591 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 592 dev->ext_listen_interval = 593 WPA_GET_LE16(msg->ext_listen_timing + 2); 594 } 595 596 if (!probe_req) { 597 u16 new_config_methods; 598 new_config_methods = msg->config_methods ? 599 msg->config_methods : msg->wps_config_methods; 600 if (new_config_methods && 601 dev->info.config_methods != new_config_methods) { 602 p2p_dbg(p2p, "Update peer " MACSTR 603 " config_methods 0x%x -> 0x%x", 604 MAC2STR(dev->info.p2p_device_addr), 605 dev->info.config_methods, 606 new_config_methods); 607 dev->info.config_methods = new_config_methods; 608 } 609 } 610} 611 612 613/** 614 * p2p_add_device - Add peer entries based on scan results or P2P frames 615 * @p2p: P2P module context from p2p_init() 616 * @addr: Source address of Beacon or Probe Response frame (may be either 617 * P2P Device Address or P2P Interface Address) 618 * @level: Signal level (signal strength of the received frame from the peer) 619 * @freq: Frequency on which the Beacon or Probe Response frame was received 620 * @rx_time: Time when the result was received 621 * @ies: IEs from the Beacon or Probe Response frame 622 * @ies_len: Length of ies buffer in octets 623 * @scan_res: Whether this was based on scan results 624 * Returns: 0 on success, -1 on failure 625 * 626 * If the scan result is for a GO, the clients in the group will also be added 627 * to the peer table. This function can also be used with some other frames 628 * like Provision Discovery Request that contains P2P Capability and P2P Device 629 * Info attributes. 630 */ 631int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 632 struct os_reltime *rx_time, int level, const u8 *ies, 633 size_t ies_len, int scan_res) 634{ 635 struct p2p_device *dev; 636 struct p2p_message msg; 637 const u8 *p2p_dev_addr; 638 int i; 639 struct os_reltime time_now; 640 641 os_memset(&msg, 0, sizeof(msg)); 642 if (p2p_parse_ies(ies, ies_len, &msg)) { 643 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry"); 644 p2p_parse_free(&msg); 645 return -1; 646 } 647 648 if (msg.p2p_device_addr) 649 p2p_dev_addr = msg.p2p_device_addr; 650 else if (msg.device_id) 651 p2p_dev_addr = msg.device_id; 652 else { 653 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 654 p2p_parse_free(&msg); 655 return -1; 656 } 657 658 if (!is_zero_ether_addr(p2p->peer_filter) && 659 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 660 p2p_dbg(p2p, "Do not add peer filter for " MACSTR 661 " due to peer filter", MAC2STR(p2p_dev_addr)); 662 p2p_parse_free(&msg); 663 return 0; 664 } 665 666 dev = p2p_create_device(p2p, p2p_dev_addr); 667 if (dev == NULL) { 668 p2p_parse_free(&msg); 669 return -1; 670 } 671 672 if (rx_time == NULL) { 673 os_get_reltime(&time_now); 674 rx_time = &time_now; 675 } 676 677 /* 678 * Update the device entry only if the new peer 679 * entry is newer than the one previously stored. 680 */ 681 if (dev->last_seen.sec > 0 && 682 os_reltime_before(rx_time, &dev->last_seen)) { 683 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)", 684 (unsigned int) rx_time->sec, 685 (unsigned int) rx_time->usec, 686 (unsigned int) dev->last_seen.sec, 687 (unsigned int) dev->last_seen.usec); 688 p2p_parse_free(&msg); 689 return -1; 690 } 691 692 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 693 694 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 695 696 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 697 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 698 if (msg.ssid && 699 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 700 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 701 != 0)) { 702 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 703 dev->oper_ssid_len = msg.ssid[1]; 704 } 705 706 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 707 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 708 int ds_freq; 709 if (*msg.ds_params == 14) 710 ds_freq = 2484; 711 else 712 ds_freq = 2407 + *msg.ds_params * 5; 713 if (freq != ds_freq) { 714 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz", 715 freq, ds_freq); 716 freq = ds_freq; 717 } 718 } 719 720 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 721 p2p_dbg(p2p, "Update Listen frequency based on scan results (" 722 MACSTR " %d -> %d MHz (DS param %d)", 723 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 724 freq, msg.ds_params ? *msg.ds_params : -1); 725 } 726 if (scan_res) { 727 dev->listen_freq = freq; 728 if (msg.group_info) 729 dev->oper_freq = freq; 730 } 731 dev->info.level = level; 732 733 p2p_copy_wps_info(p2p, dev, 0, &msg); 734 735 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 736 wpabuf_free(dev->info.wps_vendor_ext[i]); 737 dev->info.wps_vendor_ext[i] = NULL; 738 } 739 740 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 741 if (msg.wps_vendor_ext[i] == NULL) 742 break; 743 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 744 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 745 if (dev->info.wps_vendor_ext[i] == NULL) 746 break; 747 } 748 749 if (msg.wfd_subelems) { 750 wpabuf_free(dev->info.wfd_subelems); 751 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 752 } 753 754 if (scan_res) { 755 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 756 msg.group_info, msg.group_info_len); 757 } 758 759 p2p_parse_free(&msg); 760 761 if (p2p_pending_sd_req(p2p, dev)) 762 dev->flags |= P2P_DEV_SD_SCHEDULE; 763 764 if (dev->flags & P2P_DEV_REPORTED) 765 return 0; 766 767 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)", 768 freq, (unsigned int) rx_time->sec, 769 (unsigned int) rx_time->usec); 770 if (dev->flags & P2P_DEV_USER_REJECTED) { 771 p2p_dbg(p2p, "Do not report rejected device"); 772 return 0; 773 } 774 775 if (dev->info.config_methods == 0 && 776 (freq == 2412 || freq == 2437 || freq == 2462)) { 777 /* 778 * If we have only seen a Beacon frame from a GO, we do not yet 779 * know what WPS config methods it supports. Since some 780 * applications use config_methods value from P2P-DEVICE-FOUND 781 * events, postpone reporting this peer until we've fully 782 * discovered its capabilities. 783 * 784 * At least for now, do this only if the peer was detected on 785 * one of the social channels since that peer can be easily be 786 * found again and there are no limitations of having to use 787 * passive scan on this channels, so this can be done through 788 * Probe Response frame that includes the config_methods 789 * information. 790 */ 791 p2p_dbg(p2p, "Do not report peer " MACSTR 792 " with unknown config methods", MAC2STR(addr)); 793 return 0; 794 } 795 796 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 797 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 798 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 799 800 return 0; 801} 802 803 804static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 805{ 806 int i; 807 808 if (p2p->go_neg_peer == dev) { 809 /* 810 * If GO Negotiation is in progress, report that it has failed. 811 */ 812 p2p_go_neg_failed(p2p, dev, -1); 813 p2p->go_neg_peer = NULL; 814 } 815 if (p2p->invite_peer == dev) 816 p2p->invite_peer = NULL; 817 if (p2p->sd_peer == dev) 818 p2p->sd_peer = NULL; 819 if (p2p->pending_client_disc_go == dev) 820 p2p->pending_client_disc_go = NULL; 821 822 /* dev_lost() device, but only if it was previously dev_found() */ 823 if (dev->flags & P2P_DEV_REPORTED_ONCE) 824 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 825 dev->info.p2p_device_addr); 826 827 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 828 wpabuf_free(dev->info.wps_vendor_ext[i]); 829 dev->info.wps_vendor_ext[i] = NULL; 830 } 831 832 wpabuf_free(dev->info.wfd_subelems); 833 834 os_free(dev); 835} 836 837 838static int p2p_get_next_prog_freq(struct p2p_data *p2p) 839{ 840 struct p2p_channels *c; 841 struct p2p_reg_class *cla; 842 size_t cl, ch; 843 int found = 0; 844 u8 reg_class; 845 u8 channel; 846 int freq; 847 848 c = &p2p->cfg->channels; 849 for (cl = 0; cl < c->reg_classes; cl++) { 850 cla = &c->reg_class[cl]; 851 if (cla->reg_class != p2p->last_prog_scan_class) 852 continue; 853 for (ch = 0; ch < cla->channels; ch++) { 854 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 855 found = 1; 856 break; 857 } 858 } 859 if (found) 860 break; 861 } 862 863 if (!found) { 864 /* Start from beginning */ 865 reg_class = c->reg_class[0].reg_class; 866 channel = c->reg_class[0].channel[0]; 867 } else { 868 /* Pick the next channel */ 869 ch++; 870 if (ch == cla->channels) { 871 cl++; 872 if (cl == c->reg_classes) 873 cl = 0; 874 ch = 0; 875 } 876 reg_class = c->reg_class[cl].reg_class; 877 channel = c->reg_class[cl].channel[ch]; 878 } 879 880 freq = p2p_channel_to_freq(reg_class, channel); 881 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz", 882 reg_class, channel, freq); 883 p2p->last_prog_scan_class = reg_class; 884 p2p->last_prog_scan_chan = channel; 885 886 if (freq == 2412 || freq == 2437 || freq == 2462) 887 return 0; /* No need to add social channels */ 888 return freq; 889} 890 891 892static void p2p_search(struct p2p_data *p2p) 893{ 894 int freq = 0; 895 enum p2p_scan_type type; 896 u16 pw_id = DEV_PW_DEFAULT; 897 int res; 898 899 if (p2p->drv_in_listen) { 900 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing"); 901 return; 902 } 903 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 904 905 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 906 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 907 type = P2P_SCAN_SOCIAL_PLUS_ONE; 908 p2p_dbg(p2p, "Starting search (+ freq %u)", freq); 909 } else { 910 type = P2P_SCAN_SOCIAL; 911 p2p_dbg(p2p, "Starting search"); 912 } 913 914 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 915 p2p->num_req_dev_types, p2p->req_dev_types, 916 p2p->find_dev_id, pw_id); 917 if (res < 0) { 918 p2p_dbg(p2p, "Scan request failed"); 919 p2p_continue_find(p2p); 920 } else { 921 p2p_dbg(p2p, "Running p2p_scan"); 922 p2p->p2p_scan_running = 1; 923 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 924 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 925 p2p, NULL); 926 } 927} 928 929 930static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 931{ 932 struct p2p_data *p2p = eloop_ctx; 933 p2p_dbg(p2p, "Find timeout -> stop"); 934 p2p_stop_find(p2p); 935} 936 937 938static int p2p_run_after_scan(struct p2p_data *p2p) 939{ 940 struct p2p_device *dev; 941 enum p2p_after_scan op; 942 943 if (p2p->after_scan_tx) { 944 p2p->after_scan_tx_in_progress = 1; 945 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion"); 946 p2p->cfg->send_action(p2p->cfg->cb_ctx, 947 p2p->after_scan_tx->freq, 948 p2p->after_scan_tx->dst, 949 p2p->after_scan_tx->src, 950 p2p->after_scan_tx->bssid, 951 (u8 *) (p2p->after_scan_tx + 1), 952 p2p->after_scan_tx->len, 953 p2p->after_scan_tx->wait_time); 954 os_free(p2p->after_scan_tx); 955 p2p->after_scan_tx = NULL; 956 return 1; 957 } 958 959 op = p2p->start_after_scan; 960 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 961 switch (op) { 962 case P2P_AFTER_SCAN_NOTHING: 963 break; 964 case P2P_AFTER_SCAN_LISTEN: 965 p2p_dbg(p2p, "Start previously requested Listen state"); 966 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 967 p2p->pending_listen_usec / 1000); 968 return 1; 969 case P2P_AFTER_SCAN_CONNECT: 970 p2p_dbg(p2p, "Start previously requested connect with " MACSTR, 971 MAC2STR(p2p->after_scan_peer)); 972 dev = p2p_get_device(p2p, p2p->after_scan_peer); 973 if (dev == NULL) { 974 p2p_dbg(p2p, "Peer not known anymore"); 975 break; 976 } 977 p2p_connect_send(p2p, dev); 978 return 1; 979 } 980 981 return 0; 982} 983 984 985static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 986{ 987 struct p2p_data *p2p = eloop_ctx; 988 int running; 989 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running); 990 running = p2p->p2p_scan_running; 991 /* Make sure we recover from missed scan results callback */ 992 p2p->p2p_scan_running = 0; 993 994 if (running) 995 p2p_run_after_scan(p2p); 996} 997 998 999static void p2p_free_req_dev_types(struct p2p_data *p2p) 1000{ 1001 p2p->num_req_dev_types = 0; 1002 os_free(p2p->req_dev_types); 1003 p2p->req_dev_types = NULL; 1004} 1005 1006 1007int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1008 enum p2p_discovery_type type, 1009 unsigned int num_req_dev_types, const u8 *req_dev_types, 1010 const u8 *dev_id, unsigned int search_delay) 1011{ 1012 int res; 1013 1014 p2p_dbg(p2p, "Starting find (type=%d)", type); 1015 os_get_reltime(&p2p->find_start); 1016 if (p2p->p2p_scan_running) { 1017 p2p_dbg(p2p, "p2p_scan is already running"); 1018 } 1019 1020 p2p_free_req_dev_types(p2p); 1021 if (req_dev_types && num_req_dev_types) { 1022 p2p->req_dev_types = os_malloc(num_req_dev_types * 1023 WPS_DEV_TYPE_LEN); 1024 if (p2p->req_dev_types == NULL) 1025 return -1; 1026 os_memcpy(p2p->req_dev_types, req_dev_types, 1027 num_req_dev_types * WPS_DEV_TYPE_LEN); 1028 p2p->num_req_dev_types = num_req_dev_types; 1029 } 1030 1031 if (dev_id) { 1032 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1033 p2p->find_dev_id = p2p->find_dev_id_buf; 1034 } else 1035 p2p->find_dev_id = NULL; 1036 1037 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1038 p2p_clear_timeout(p2p); 1039 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1040 p2p->find_type = type; 1041 p2p_device_clear_reported(p2p); 1042 p2p_set_state(p2p, P2P_SEARCH); 1043 p2p->search_delay = search_delay; 1044 p2p->in_search_delay = 0; 1045 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1046 p2p->last_p2p_find_timeout = timeout; 1047 if (timeout) 1048 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1049 p2p, NULL); 1050 switch (type) { 1051 case P2P_FIND_START_WITH_FULL: 1052 case P2P_FIND_PROGRESSIVE: 1053 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1054 p2p->num_req_dev_types, 1055 p2p->req_dev_types, dev_id, 1056 DEV_PW_DEFAULT); 1057 break; 1058 case P2P_FIND_ONLY_SOCIAL: 1059 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1060 p2p->num_req_dev_types, 1061 p2p->req_dev_types, dev_id, 1062 DEV_PW_DEFAULT); 1063 break; 1064 default: 1065 return -1; 1066 } 1067 1068 if (res == 0) { 1069 p2p_dbg(p2p, "Running p2p_scan"); 1070 p2p->p2p_scan_running = 1; 1071 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1072 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1073 p2p, NULL); 1074 } else if (p2p->p2p_scan_running) { 1075 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running"); 1076 /* wait for the previous p2p_scan to complete */ 1077 } else { 1078 p2p_dbg(p2p, "Failed to start p2p_scan"); 1079 p2p_set_state(p2p, P2P_IDLE); 1080 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1081 } 1082 1083 return res; 1084} 1085 1086 1087void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1088{ 1089 p2p_dbg(p2p, "Stopping find"); 1090 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1091 p2p_clear_timeout(p2p); 1092 if (p2p->state == P2P_SEARCH) 1093 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1094 p2p_set_state(p2p, P2P_IDLE); 1095 p2p_free_req_dev_types(p2p); 1096 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1097 if (p2p->go_neg_peer) 1098 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1099 p2p->go_neg_peer = NULL; 1100 p2p->sd_peer = NULL; 1101 p2p->invite_peer = NULL; 1102 p2p_stop_listen_for_freq(p2p, freq); 1103} 1104 1105 1106void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1107{ 1108 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1109 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1110 return; 1111 } 1112 if (p2p->in_listen) { 1113 p2p->in_listen = 0; 1114 p2p_clear_timeout(p2p); 1115 } 1116 if (p2p->drv_in_listen) { 1117 /* 1118 * The driver may not deliver callback to p2p_listen_end() 1119 * when the operation gets canceled, so clear the internal 1120 * variable that is tracking driver state. 1121 */ 1122 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1123 p2p->drv_in_listen = 0; 1124 } 1125 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1126} 1127 1128 1129void p2p_stop_listen(struct p2p_data *p2p) 1130{ 1131 if (p2p->state != P2P_LISTEN_ONLY) { 1132 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1133 return; 1134 } 1135 1136 p2p_stop_listen_for_freq(p2p, 0); 1137 p2p_set_state(p2p, P2P_IDLE); 1138} 1139 1140 1141void p2p_stop_find(struct p2p_data *p2p) 1142{ 1143 p2p_stop_find_for_freq(p2p, 0); 1144} 1145 1146 1147static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1148 unsigned int force_freq, 1149 unsigned int pref_freq, int go) 1150{ 1151 u8 op_class, op_channel; 1152 unsigned int freq = force_freq ? force_freq : pref_freq; 1153 1154 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d", 1155 force_freq, pref_freq, go); 1156 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1157 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1158 return -1; 1159 } 1160 1161 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) && 1162 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class, 1163 op_channel))) { 1164 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1165 freq, op_class, op_channel); 1166 return -1; 1167 } 1168 1169 p2p->op_reg_class = op_class; 1170 p2p->op_channel = op_channel; 1171 1172 if (force_freq) { 1173 p2p->channels.reg_classes = 1; 1174 p2p->channels.reg_class[0].channels = 1; 1175 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1176 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1177 } else { 1178 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1179 sizeof(struct p2p_channels)); 1180 } 1181 1182 return 0; 1183} 1184 1185 1186static void p2p_prepare_channel_best(struct p2p_data *p2p) 1187{ 1188 u8 op_class, op_channel; 1189 const int op_classes_5ghz[] = { 124, 115, 0 }; 1190 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 1191 const int op_classes_vht[] = { 128, 0 }; 1192 1193 p2p_dbg(p2p, "Prepare channel best"); 1194 1195 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1196 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1197 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1198 == 0) { 1199 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1200 p2p->op_reg_class = op_class; 1201 p2p->op_channel = op_channel; 1202 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1203 p2p_supported_freq(p2p, p2p->best_freq_5) && 1204 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1205 == 0) { 1206 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1207 p2p->op_reg_class = op_class; 1208 p2p->op_channel = op_channel; 1209 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1210 p2p_supported_freq(p2p, p2p->best_freq_24) && 1211 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1212 &op_channel) == 0) { 1213 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1214 p2p->op_reg_class = op_class; 1215 p2p->op_channel = op_channel; 1216 } else if (p2p->cfg->num_pref_chan > 0 && 1217 p2p_channels_includes(&p2p->cfg->channels, 1218 p2p->cfg->pref_chan[0].op_class, 1219 p2p->cfg->pref_chan[0].chan)) { 1220 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1221 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1222 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1223 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht, 1224 &p2p->op_reg_class, &p2p->op_channel) == 1225 0) { 1226 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference", 1227 p2p->op_reg_class, p2p->op_channel); 1228 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40, 1229 &p2p->op_reg_class, &p2p->op_channel) == 1230 0) { 1231 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference", 1232 p2p->op_reg_class, p2p->op_channel); 1233 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz, 1234 &p2p->op_reg_class, &p2p->op_channel) == 1235 0) { 1236 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference", 1237 p2p->op_reg_class, p2p->op_channel); 1238 } else { 1239 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1240 p2p->op_reg_class = p2p->cfg->op_reg_class; 1241 p2p->op_channel = p2p->cfg->op_channel; 1242 } 1243 1244 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1245 sizeof(struct p2p_channels)); 1246} 1247 1248 1249/** 1250 * p2p_prepare_channel - Select operating channel for GO Negotiation 1251 * @p2p: P2P module context from p2p_init() 1252 * @dev: Selected peer device 1253 * @force_freq: Forced frequency in MHz or 0 if not forced 1254 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1255 * @go: Whether the local end will be forced to be GO 1256 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1257 * 1258 * This function is used to do initial operating channel selection for GO 1259 * Negotiation prior to having received peer information. The selected channel 1260 * may be further optimized in p2p_reselect_channel() once the peer information 1261 * is available. 1262 */ 1263int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1264 unsigned int force_freq, unsigned int pref_freq, int go) 1265{ 1266 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d", 1267 force_freq, pref_freq, go); 1268 if (force_freq || pref_freq) { 1269 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) < 1270 0) 1271 return -1; 1272 } else { 1273 p2p_prepare_channel_best(p2p); 1274 } 1275 p2p_channels_dump(p2p, "prepared channels", &p2p->channels); 1276 if (go) 1277 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq); 1278 else if (!force_freq) 1279 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels, 1280 &p2p->channels); 1281 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels); 1282 1283 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1284 p2p->op_reg_class, p2p->op_channel, 1285 force_freq ? " (forced)" : ""); 1286 1287 if (force_freq) 1288 dev->flags |= P2P_DEV_FORCE_FREQ; 1289 else 1290 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1291 1292 return 0; 1293} 1294 1295 1296static void p2p_set_dev_persistent(struct p2p_device *dev, 1297 int persistent_group) 1298{ 1299 switch (persistent_group) { 1300 case 0: 1301 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1302 P2P_DEV_PREFER_PERSISTENT_RECONN); 1303 break; 1304 case 1: 1305 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1306 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1307 break; 1308 case 2: 1309 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1310 P2P_DEV_PREFER_PERSISTENT_RECONN; 1311 break; 1312 } 1313} 1314 1315 1316int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1317 enum p2p_wps_method wps_method, 1318 int go_intent, const u8 *own_interface_addr, 1319 unsigned int force_freq, int persistent_group, 1320 const u8 *force_ssid, size_t force_ssid_len, 1321 int pd_before_go_neg, unsigned int pref_freq) 1322{ 1323 struct p2p_device *dev; 1324 1325 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1326 " GO Intent=%d Intended Interface Address=" MACSTR 1327 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1328 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1329 wps_method, persistent_group, pd_before_go_neg); 1330 1331 dev = p2p_get_device(p2p, peer_addr); 1332 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1333 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1334 MAC2STR(peer_addr)); 1335 return -1; 1336 } 1337 1338 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 1339 go_intent == 15) < 0) 1340 return -1; 1341 1342 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1343 if (!(dev->info.dev_capab & 1344 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1345 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1346 " that is in a group and is not discoverable", 1347 MAC2STR(peer_addr)); 1348 return -1; 1349 } 1350 if (dev->oper_freq <= 0) { 1351 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1352 " with incomplete information", 1353 MAC2STR(peer_addr)); 1354 return -1; 1355 } 1356 1357 /* 1358 * First, try to connect directly. If the peer does not 1359 * acknowledge frames, assume it is sleeping and use device 1360 * discoverability via the GO at that point. 1361 */ 1362 } 1363 1364 p2p->ssid_set = 0; 1365 if (force_ssid) { 1366 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1367 force_ssid, force_ssid_len); 1368 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1369 p2p->ssid_len = force_ssid_len; 1370 p2p->ssid_set = 1; 1371 } 1372 1373 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1374 dev->flags &= ~P2P_DEV_USER_REJECTED; 1375 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1376 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1377 if (pd_before_go_neg) 1378 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1379 else { 1380 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1381 /* 1382 * Assign dialog token and tie breaker here to use the same 1383 * values in each retry within the same GO Negotiation exchange. 1384 */ 1385 dev->dialog_token++; 1386 if (dev->dialog_token == 0) 1387 dev->dialog_token = 1; 1388 dev->tie_breaker = p2p->next_tie_breaker; 1389 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1390 } 1391 dev->connect_reqs = 0; 1392 dev->go_neg_req_sent = 0; 1393 dev->go_state = UNKNOWN_GO; 1394 p2p_set_dev_persistent(dev, persistent_group); 1395 p2p->go_intent = go_intent; 1396 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1397 1398 if (p2p->state != P2P_IDLE) 1399 p2p_stop_find(p2p); 1400 1401 if (p2p->after_scan_tx) { 1402 /* 1403 * We need to drop the pending frame to avoid issues with the 1404 * new GO Negotiation, e.g., when the pending frame was from a 1405 * previous attempt at starting a GO Negotiation. 1406 */ 1407 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion"); 1408 os_free(p2p->after_scan_tx); 1409 p2p->after_scan_tx = NULL; 1410 } 1411 1412 dev->wps_method = wps_method; 1413 dev->status = P2P_SC_SUCCESS; 1414 1415 if (p2p->p2p_scan_running) { 1416 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1417 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1418 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1419 return 0; 1420 } 1421 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1422 1423 return p2p_connect_send(p2p, dev); 1424} 1425 1426 1427int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1428 enum p2p_wps_method wps_method, 1429 int go_intent, const u8 *own_interface_addr, 1430 unsigned int force_freq, int persistent_group, 1431 const u8 *force_ssid, size_t force_ssid_len, 1432 unsigned int pref_freq) 1433{ 1434 struct p2p_device *dev; 1435 1436 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1437 " GO Intent=%d Intended Interface Address=" MACSTR 1438 " wps_method=%d persistent_group=%d", 1439 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1440 wps_method, persistent_group); 1441 1442 dev = p2p_get_device(p2p, peer_addr); 1443 if (dev == NULL) { 1444 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1445 MAC2STR(peer_addr)); 1446 return -1; 1447 } 1448 1449 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent == 1450 15) < 0) 1451 return -1; 1452 1453 p2p->ssid_set = 0; 1454 if (force_ssid) { 1455 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1456 force_ssid, force_ssid_len); 1457 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1458 p2p->ssid_len = force_ssid_len; 1459 p2p->ssid_set = 1; 1460 } 1461 1462 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1463 dev->flags &= ~P2P_DEV_USER_REJECTED; 1464 dev->go_neg_req_sent = 0; 1465 dev->go_state = UNKNOWN_GO; 1466 p2p_set_dev_persistent(dev, persistent_group); 1467 p2p->go_intent = go_intent; 1468 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1469 1470 dev->wps_method = wps_method; 1471 dev->status = P2P_SC_SUCCESS; 1472 1473 return 0; 1474} 1475 1476 1477void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1478 struct p2p_device *dev, struct p2p_message *msg) 1479{ 1480 os_get_reltime(&dev->last_seen); 1481 1482 p2p_copy_wps_info(p2p, dev, 0, msg); 1483 1484 if (msg->listen_channel) { 1485 int freq; 1486 freq = p2p_channel_to_freq(msg->listen_channel[3], 1487 msg->listen_channel[4]); 1488 if (freq < 0) { 1489 p2p_dbg(p2p, "Unknown peer Listen channel: " 1490 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1491 msg->listen_channel[0], 1492 msg->listen_channel[1], 1493 msg->listen_channel[2], 1494 msg->listen_channel[3], 1495 msg->listen_channel[4]); 1496 } else { 1497 p2p_dbg(p2p, "Update peer " MACSTR 1498 " Listen channel: %u -> %u MHz", 1499 MAC2STR(dev->info.p2p_device_addr), 1500 dev->listen_freq, freq); 1501 dev->listen_freq = freq; 1502 } 1503 } 1504 1505 if (msg->wfd_subelems) { 1506 wpabuf_free(dev->info.wfd_subelems); 1507 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1508 } 1509 1510 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1511 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1512 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1513 } else { 1514 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1515 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1516 "listen_freq=%d", 1517 MAC2STR(dev->info.p2p_device_addr), 1518 dev->info.dev_capab, dev->info.group_capab, 1519 dev->info.device_name, dev->listen_freq); 1520 } 1521 1522 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1523 1524 if (dev->flags & P2P_DEV_USER_REJECTED) { 1525 p2p_dbg(p2p, "Do not report rejected device"); 1526 return; 1527 } 1528 1529 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1530 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1531 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1532} 1533 1534 1535void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1536{ 1537 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1538 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1539 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1540 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1541 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1542} 1543 1544 1545int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1546{ 1547 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1548 p2p_random(params->passphrase, 8); 1549 return 0; 1550} 1551 1552 1553void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1554{ 1555 struct p2p_go_neg_results res; 1556 int go = peer->go_state == LOCAL_GO; 1557 struct p2p_channels intersection; 1558 int freqs; 1559 size_t i, j; 1560 1561 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1562 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1563 1564 os_memset(&res, 0, sizeof(res)); 1565 res.role_go = go; 1566 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1567 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1568 res.wps_method = peer->wps_method; 1569 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1570 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1571 res.persistent_group = 2; 1572 else 1573 res.persistent_group = 1; 1574 } 1575 1576 if (go) { 1577 /* Setup AP mode for WPS provisioning */ 1578 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1579 p2p->op_channel); 1580 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1581 res.ssid_len = p2p->ssid_len; 1582 p2p_random(res.passphrase, 8); 1583 } else { 1584 res.freq = peer->oper_freq; 1585 if (p2p->ssid_len) { 1586 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1587 res.ssid_len = p2p->ssid_len; 1588 } 1589 } 1590 1591 p2p_channels_dump(p2p, "own channels", &p2p->channels); 1592 p2p_channels_dump(p2p, "peer channels", &peer->channels); 1593 p2p_channels_intersect(&p2p->channels, &peer->channels, 1594 &intersection); 1595 if (go) { 1596 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq); 1597 p2p_channels_dump(p2p, "intersection after no-GO removal", 1598 &intersection); 1599 } 1600 freqs = 0; 1601 for (i = 0; i < intersection.reg_classes; i++) { 1602 struct p2p_reg_class *c = &intersection.reg_class[i]; 1603 if (freqs + 1 == P2P_MAX_CHANNELS) 1604 break; 1605 for (j = 0; j < c->channels; j++) { 1606 int freq; 1607 if (freqs + 1 == P2P_MAX_CHANNELS) 1608 break; 1609 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]); 1610 if (freq < 0) 1611 continue; 1612 res.freq_list[freqs++] = freq; 1613 } 1614 } 1615 1616 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1617 1618 p2p_clear_timeout(p2p); 1619 p2p->ssid_set = 0; 1620 peer->go_neg_req_sent = 0; 1621 peer->wps_method = WPS_NOT_READY; 1622 1623 p2p_set_state(p2p, P2P_PROVISIONING); 1624 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1625} 1626 1627 1628static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1629 const u8 *data, size_t len, int rx_freq) 1630{ 1631 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1632 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1633 1634 if (len < 1) 1635 return; 1636 1637 switch (data[0]) { 1638 case P2P_GO_NEG_REQ: 1639 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1640 break; 1641 case P2P_GO_NEG_RESP: 1642 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1643 break; 1644 case P2P_GO_NEG_CONF: 1645 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1646 break; 1647 case P2P_INVITATION_REQ: 1648 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1649 rx_freq); 1650 break; 1651 case P2P_INVITATION_RESP: 1652 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1653 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1654 break; 1655 case P2P_PROV_DISC_REQ: 1656 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1657 break; 1658 case P2P_PROV_DISC_RESP: 1659 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1660 break; 1661 case P2P_DEV_DISC_REQ: 1662 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1663 break; 1664 case P2P_DEV_DISC_RESP: 1665 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1666 break; 1667 default: 1668 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1669 data[0]); 1670 break; 1671 } 1672} 1673 1674 1675static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1676 const u8 *sa, const u8 *bssid, const u8 *data, 1677 size_t len, int freq) 1678{ 1679 if (len < 1) 1680 return; 1681 1682 switch (data[0]) { 1683 case WLAN_PA_VENDOR_SPECIFIC: 1684 data++; 1685 len--; 1686 if (len < 3) 1687 return; 1688 if (WPA_GET_BE24(data) != OUI_WFA) 1689 return; 1690 1691 data += 3; 1692 len -= 3; 1693 if (len < 1) 1694 return; 1695 1696 if (*data != P2P_OUI_TYPE) 1697 return; 1698 1699 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1700 break; 1701 case WLAN_PA_GAS_INITIAL_REQ: 1702 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1703 break; 1704 case WLAN_PA_GAS_INITIAL_RESP: 1705 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1706 break; 1707 case WLAN_PA_GAS_COMEBACK_REQ: 1708 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1709 break; 1710 case WLAN_PA_GAS_COMEBACK_RESP: 1711 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1712 break; 1713 } 1714} 1715 1716 1717void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1718 const u8 *bssid, u8 category, 1719 const u8 *data, size_t len, int freq) 1720{ 1721 if (category == WLAN_ACTION_PUBLIC) { 1722 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1723 return; 1724 } 1725 1726 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1727 return; 1728 1729 if (len < 4) 1730 return; 1731 1732 if (WPA_GET_BE24(data) != OUI_WFA) 1733 return; 1734 data += 3; 1735 len -= 3; 1736 1737 if (*data != P2P_OUI_TYPE) 1738 return; 1739 data++; 1740 len--; 1741 1742 /* P2P action frame */ 1743 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1744 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1745 1746 if (len < 1) 1747 return; 1748 switch (data[0]) { 1749 case P2P_NOA: 1750 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1751 /* TODO */ 1752 break; 1753 case P2P_PRESENCE_REQ: 1754 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1755 break; 1756 case P2P_PRESENCE_RESP: 1757 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1758 break; 1759 case P2P_GO_DISC_REQ: 1760 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1761 break; 1762 default: 1763 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 1764 break; 1765 } 1766} 1767 1768 1769static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1770{ 1771 struct p2p_data *p2p = eloop_ctx; 1772 if (p2p->go_neg_peer == NULL) 1773 return; 1774 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1775 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1776 p2p_connect_send(p2p, p2p->go_neg_peer); 1777} 1778 1779 1780static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1781{ 1782 struct p2p_data *p2p = eloop_ctx; 1783 if (p2p->invite_peer == NULL) 1784 return; 1785 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1786 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1787} 1788 1789 1790static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1791 const u8 *ie, size_t ie_len) 1792{ 1793 struct p2p_message msg; 1794 struct p2p_device *dev; 1795 1796 os_memset(&msg, 0, sizeof(msg)); 1797 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1798 { 1799 p2p_parse_free(&msg); 1800 return; /* not a P2P probe */ 1801 } 1802 1803 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1804 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1805 != 0) { 1806 /* The Probe Request is not part of P2P Device Discovery. It is 1807 * not known whether the source address of the frame is the P2P 1808 * Device Address or P2P Interface Address. Do not add a new 1809 * peer entry based on this frames. 1810 */ 1811 p2p_parse_free(&msg); 1812 return; 1813 } 1814 1815 dev = p2p_get_device(p2p, addr); 1816 if (dev) { 1817 if (dev->country[0] == 0 && msg.listen_channel) 1818 os_memcpy(dev->country, msg.listen_channel, 3); 1819 os_get_reltime(&dev->last_seen); 1820 p2p_parse_free(&msg); 1821 return; /* already known */ 1822 } 1823 1824 dev = p2p_create_device(p2p, addr); 1825 if (dev == NULL) { 1826 p2p_parse_free(&msg); 1827 return; 1828 } 1829 1830 os_get_reltime(&dev->last_seen); 1831 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1832 1833 if (msg.listen_channel) { 1834 os_memcpy(dev->country, msg.listen_channel, 3); 1835 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 1836 msg.listen_channel[4]); 1837 } 1838 1839 p2p_copy_wps_info(p2p, dev, 1, &msg); 1840 1841 if (msg.wfd_subelems) { 1842 wpabuf_free(dev->info.wfd_subelems); 1843 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1844 } 1845 1846 p2p_parse_free(&msg); 1847 1848 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 1849 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1850 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1851 dev->info.group_capab, dev->info.device_name, 1852 dev->listen_freq); 1853} 1854 1855 1856struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1857 const u8 *addr, 1858 struct p2p_message *msg) 1859{ 1860 struct p2p_device *dev; 1861 1862 dev = p2p_get_device(p2p, addr); 1863 if (dev) { 1864 os_get_reltime(&dev->last_seen); 1865 return dev; /* already known */ 1866 } 1867 1868 dev = p2p_create_device(p2p, addr); 1869 if (dev == NULL) 1870 return NULL; 1871 1872 p2p_add_dev_info(p2p, addr, dev, msg); 1873 1874 return dev; 1875} 1876 1877 1878static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1879{ 1880 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1881 return 1; 1882 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1883 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1884 WPA_GET_BE16(&req_dev_type[6]) == 0) 1885 return 1; /* Category match with wildcard OUI/sub-category */ 1886 return 0; 1887} 1888 1889 1890int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1891 size_t num_req_dev_type) 1892{ 1893 size_t i; 1894 for (i = 0; i < num_req_dev_type; i++) { 1895 if (dev_type_match(dev_type, req_dev_type[i])) 1896 return 1; 1897 } 1898 return 0; 1899} 1900 1901 1902/** 1903 * p2p_match_dev_type - Match local device type with requested type 1904 * @p2p: P2P module context from p2p_init() 1905 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1906 * Returns: 1 on match, 0 on mismatch 1907 * 1908 * This function can be used to match the Requested Device Type attribute in 1909 * WPS IE with the local device types for deciding whether to reply to a Probe 1910 * Request frame. 1911 */ 1912int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1913{ 1914 struct wps_parse_attr attr; 1915 size_t i; 1916 1917 if (wps_parse_msg(wps, &attr)) 1918 return 1; /* assume no Requested Device Type attributes */ 1919 1920 if (attr.num_req_dev_type == 0) 1921 return 1; /* no Requested Device Type attributes -> match */ 1922 1923 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1924 attr.num_req_dev_type)) 1925 return 1; /* Own Primary Device Type matches */ 1926 1927 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1928 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1929 attr.req_dev_type, 1930 attr.num_req_dev_type)) 1931 return 1; /* Own Secondary Device Type matches */ 1932 1933 /* No matching device type found */ 1934 return 0; 1935} 1936 1937 1938struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1939{ 1940 struct wpabuf *buf; 1941 u8 *len; 1942 int pw_id = -1; 1943 size_t extra = 0; 1944 1945#ifdef CONFIG_WIFI_DISPLAY 1946 if (p2p->wfd_ie_probe_resp) 1947 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1948#endif /* CONFIG_WIFI_DISPLAY */ 1949 1950 buf = wpabuf_alloc(1000 + extra); 1951 if (buf == NULL) 1952 return NULL; 1953 1954 if (p2p->go_neg_peer) { 1955 /* Advertise immediate availability of WPS credential */ 1956 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1957 } 1958 1959 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) { 1960 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response"); 1961 wpabuf_free(buf); 1962 return NULL; 1963 } 1964 1965#ifdef CONFIG_WIFI_DISPLAY 1966 if (p2p->wfd_ie_probe_resp) 1967 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1968#endif /* CONFIG_WIFI_DISPLAY */ 1969 1970 /* P2P IE */ 1971 len = p2p_buf_add_ie_hdr(buf); 1972 p2p_buf_add_capability(buf, p2p->dev_capab & 1973 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1974 if (p2p->ext_listen_interval) 1975 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1976 p2p->ext_listen_interval); 1977 p2p_buf_add_device_info(buf, p2p, NULL); 1978 p2p_buf_update_ie_hdr(buf, len); 1979 1980 return buf; 1981} 1982 1983 1984static enum p2p_probe_req_status 1985p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1986 const u8 *bssid, const u8 *ie, size_t ie_len) 1987{ 1988 struct ieee802_11_elems elems; 1989 struct wpabuf *buf; 1990 struct ieee80211_mgmt *resp; 1991 struct p2p_message msg; 1992 struct wpabuf *ies; 1993 1994 if (!p2p->in_listen || !p2p->drv_in_listen) { 1995 /* not in Listen state - ignore Probe Request */ 1996 return P2P_PREQ_NOT_LISTEN; 1997 } 1998 1999 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2000 ParseFailed) { 2001 /* Ignore invalid Probe Request frames */ 2002 return P2P_PREQ_MALFORMED; 2003 } 2004 2005 if (elems.p2p == NULL) { 2006 /* not a P2P probe - ignore it */ 2007 return P2P_PREQ_NOT_P2P; 2008 } 2009 2010 if (dst && !is_broadcast_ether_addr(dst) && 2011 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2012 /* Not sent to the broadcast address or our P2P Device Address 2013 */ 2014 return P2P_PREQ_NOT_PROCESSED; 2015 } 2016 2017 if (bssid && !is_broadcast_ether_addr(bssid)) { 2018 /* Not sent to the Wildcard BSSID */ 2019 return P2P_PREQ_NOT_PROCESSED; 2020 } 2021 2022 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2023 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2024 0) { 2025 /* not using P2P Wildcard SSID - ignore */ 2026 return P2P_PREQ_NOT_PROCESSED; 2027 } 2028 2029 if (supp_rates_11b_only(&elems)) { 2030 /* Indicates support for 11b rates only */ 2031 return P2P_PREQ_NOT_P2P; 2032 } 2033 2034 os_memset(&msg, 0, sizeof(msg)); 2035 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2036 /* Could not parse P2P attributes */ 2037 return P2P_PREQ_NOT_P2P; 2038 } 2039 2040 if (msg.device_id && 2041 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2042 /* Device ID did not match */ 2043 p2p_parse_free(&msg); 2044 return P2P_PREQ_NOT_PROCESSED; 2045 } 2046 2047 /* Check Requested Device Type match */ 2048 if (msg.wps_attributes && 2049 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2050 /* No match with Requested Device Type */ 2051 p2p_parse_free(&msg); 2052 return P2P_PREQ_NOT_PROCESSED; 2053 } 2054 p2p_parse_free(&msg); 2055 2056 if (!p2p->cfg->send_probe_resp) { 2057 /* Response generated elsewhere */ 2058 return P2P_PREQ_NOT_PROCESSED; 2059 } 2060 2061 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2062 2063 /* 2064 * We do not really have a specific BSS that this frame is advertising, 2065 * so build a frame that has some information in valid format. This is 2066 * really only used for discovery purposes, not to learn exact BSS 2067 * parameters. 2068 */ 2069 ies = p2p_build_probe_resp_ies(p2p); 2070 if (ies == NULL) 2071 return P2P_PREQ_NOT_PROCESSED; 2072 2073 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2074 if (buf == NULL) { 2075 wpabuf_free(ies); 2076 return P2P_PREQ_NOT_PROCESSED; 2077 } 2078 2079 resp = NULL; 2080 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2081 2082 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2083 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2084 os_memcpy(resp->da, addr, ETH_ALEN); 2085 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2086 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2087 resp->u.probe_resp.beacon_int = host_to_le16(100); 2088 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2089 resp->u.probe_resp.capab_info = 2090 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2091 WLAN_CAPABILITY_PRIVACY | 2092 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2093 2094 wpabuf_put_u8(buf, WLAN_EID_SSID); 2095 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2096 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2097 2098 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2099 wpabuf_put_u8(buf, 8); 2100 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2101 wpabuf_put_u8(buf, 90 / 5); 2102 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2103 wpabuf_put_u8(buf, 180 / 5); 2104 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2105 wpabuf_put_u8(buf, 360 / 5); 2106 wpabuf_put_u8(buf, 480 / 5); 2107 wpabuf_put_u8(buf, 540 / 5); 2108 2109 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2110 wpabuf_put_u8(buf, 1); 2111 wpabuf_put_u8(buf, p2p->cfg->channel); 2112 2113 wpabuf_put_buf(buf, ies); 2114 wpabuf_free(ies); 2115 2116 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2117 2118 wpabuf_free(buf); 2119 2120 return P2P_PREQ_NOT_PROCESSED; 2121} 2122 2123 2124enum p2p_probe_req_status 2125p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2126 const u8 *bssid, const u8 *ie, size_t ie_len) 2127{ 2128 enum p2p_probe_req_status res; 2129 2130 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2131 2132 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2133 2134 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2135 p2p->go_neg_peer && 2136 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2137 == 0 && 2138 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2139 /* Received a Probe Request from GO Negotiation peer */ 2140 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2141 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2142 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2143 return P2P_PREQ_PROCESSED; 2144 } 2145 2146 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2147 p2p->invite_peer && 2148 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2149 == 0) { 2150 /* Received a Probe Request from Invite peer */ 2151 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2152 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2153 return P2P_PREQ_PROCESSED; 2154 } 2155 2156 return res; 2157} 2158 2159 2160static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2161 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2162{ 2163 struct wpabuf *tmp; 2164 u8 *lpos; 2165 size_t tmplen; 2166 int res; 2167 u8 group_capab; 2168 2169 if (p2p_ie == NULL) 2170 return 0; /* WLAN AP is not a P2P manager */ 2171 2172 /* 2173 * (Re)Association Request - P2P IE 2174 * P2P Capability attribute (shall be present) 2175 * P2P Interface attribute (present if concurrent device and 2176 * P2P Management is enabled) 2177 */ 2178 tmp = wpabuf_alloc(200); 2179 if (tmp == NULL) 2180 return -1; 2181 2182 lpos = p2p_buf_add_ie_hdr(tmp); 2183 group_capab = 0; 2184 if (p2p->num_groups > 0) { 2185 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2186 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2187 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2188 p2p->cross_connect) 2189 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2190 } 2191 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2192 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2193 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2194 p2p_buf_add_p2p_interface(tmp, p2p); 2195 p2p_buf_update_ie_hdr(tmp, lpos); 2196 2197 tmplen = wpabuf_len(tmp); 2198 if (tmplen > len) 2199 res = -1; 2200 else { 2201 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2202 res = tmplen; 2203 } 2204 wpabuf_free(tmp); 2205 2206 return res; 2207} 2208 2209 2210int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2211 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2212{ 2213 struct wpabuf *tmp; 2214 u8 *lpos; 2215 struct p2p_device *peer; 2216 size_t tmplen; 2217 int res; 2218 size_t extra = 0; 2219 2220 if (!p2p_group) 2221 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2222 2223#ifdef CONFIG_WIFI_DISPLAY 2224 if (p2p->wfd_ie_assoc_req) 2225 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2226#endif /* CONFIG_WIFI_DISPLAY */ 2227 2228 /* 2229 * (Re)Association Request - P2P IE 2230 * P2P Capability attribute (shall be present) 2231 * Extended Listen Timing (may be present) 2232 * P2P Device Info attribute (shall be present) 2233 */ 2234 tmp = wpabuf_alloc(200 + extra); 2235 if (tmp == NULL) 2236 return -1; 2237 2238#ifdef CONFIG_WIFI_DISPLAY 2239 if (p2p->wfd_ie_assoc_req) 2240 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2241#endif /* CONFIG_WIFI_DISPLAY */ 2242 2243 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2244 2245 lpos = p2p_buf_add_ie_hdr(tmp); 2246 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2247 if (p2p->ext_listen_interval) 2248 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2249 p2p->ext_listen_interval); 2250 p2p_buf_add_device_info(tmp, p2p, peer); 2251 p2p_buf_update_ie_hdr(tmp, lpos); 2252 2253 tmplen = wpabuf_len(tmp); 2254 if (tmplen > len) 2255 res = -1; 2256 else { 2257 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2258 res = tmplen; 2259 } 2260 wpabuf_free(tmp); 2261 2262 return res; 2263} 2264 2265 2266int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2267{ 2268 struct wpabuf *p2p_ie; 2269 int ret; 2270 2271 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2272 if (p2p_ie == NULL) 2273 return 0; 2274 2275 ret = p2p_attr_text(p2p_ie, buf, end); 2276 wpabuf_free(p2p_ie); 2277 return ret; 2278} 2279 2280 2281int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2282{ 2283 struct p2p_message msg; 2284 2285 os_memset(&msg, 0, sizeof(msg)); 2286 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2287 return -1; 2288 2289 if (msg.p2p_device_addr) { 2290 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2291 return 0; 2292 } else if (msg.device_id) { 2293 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2294 return 0; 2295 } 2296 return -1; 2297} 2298 2299 2300int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2301{ 2302 struct wpabuf *p2p_ie; 2303 int ret; 2304 2305 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2306 P2P_IE_VENDOR_TYPE); 2307 if (p2p_ie == NULL) 2308 return -1; 2309 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2310 wpabuf_free(p2p_ie); 2311 return ret; 2312} 2313 2314 2315static void p2p_clear_go_neg(struct p2p_data *p2p) 2316{ 2317 p2p->go_neg_peer = NULL; 2318 p2p_clear_timeout(p2p); 2319 p2p_set_state(p2p, P2P_IDLE); 2320} 2321 2322 2323void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2324{ 2325 if (p2p->go_neg_peer == NULL) { 2326 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2327 return; /* No pending Group Formation */ 2328 } 2329 2330 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2331 0) { 2332 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2333 MACSTR " (GO Negotiation peer " MACSTR ")", 2334 MAC2STR(mac_addr), 2335 MAC2STR(p2p->go_neg_peer->intended_addr)); 2336 return; /* Ignore unexpected peer address */ 2337 } 2338 2339 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2340 MAC2STR(mac_addr)); 2341 2342 p2p_clear_go_neg(p2p); 2343} 2344 2345 2346void p2p_group_formation_failed(struct p2p_data *p2p) 2347{ 2348 if (p2p->go_neg_peer == NULL) { 2349 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2350 return; /* No pending Group Formation */ 2351 } 2352 2353 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2354 MAC2STR(p2p->go_neg_peer->intended_addr)); 2355 2356 p2p_clear_go_neg(p2p); 2357} 2358 2359 2360struct p2p_data * p2p_init(const struct p2p_config *cfg) 2361{ 2362 struct p2p_data *p2p; 2363 2364 if (cfg->max_peers < 1) 2365 return NULL; 2366 2367 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2368 if (p2p == NULL) 2369 return NULL; 2370 p2p->cfg = (struct p2p_config *) (p2p + 1); 2371 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2372 if (cfg->dev_name) 2373 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2374 if (cfg->manufacturer) 2375 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2376 if (cfg->model_name) 2377 p2p->cfg->model_name = os_strdup(cfg->model_name); 2378 if (cfg->model_number) 2379 p2p->cfg->model_number = os_strdup(cfg->model_number); 2380 if (cfg->serial_number) 2381 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2382 if (cfg->pref_chan) { 2383 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2384 sizeof(struct p2p_channel)); 2385 if (p2p->cfg->pref_chan) { 2386 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2387 cfg->num_pref_chan * 2388 sizeof(struct p2p_channel)); 2389 } else 2390 p2p->cfg->num_pref_chan = 0; 2391 } 2392 2393 p2p->min_disc_int = 1; 2394 p2p->max_disc_int = 3; 2395 p2p->max_disc_tu = -1; 2396 2397 os_get_random(&p2p->next_tie_breaker, 1); 2398 p2p->next_tie_breaker &= 0x01; 2399 if (cfg->sd_request) 2400 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2401 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2402 if (cfg->concurrent_operations) 2403 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2404 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2405 2406 dl_list_init(&p2p->devices); 2407 2408 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2409 p2p_expiration_timeout, p2p, NULL); 2410 2411 p2p->go_timeout = 100; 2412 p2p->client_timeout = 20; 2413 2414 p2p_dbg(p2p, "initialized"); 2415 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 2416 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 2417 2418 return p2p; 2419} 2420 2421 2422void p2p_deinit(struct p2p_data *p2p) 2423{ 2424#ifdef CONFIG_WIFI_DISPLAY 2425 wpabuf_free(p2p->wfd_ie_beacon); 2426 wpabuf_free(p2p->wfd_ie_probe_req); 2427 wpabuf_free(p2p->wfd_ie_probe_resp); 2428 wpabuf_free(p2p->wfd_ie_assoc_req); 2429 wpabuf_free(p2p->wfd_ie_invitation); 2430 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2431 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2432 wpabuf_free(p2p->wfd_ie_go_neg); 2433 wpabuf_free(p2p->wfd_dev_info); 2434 wpabuf_free(p2p->wfd_assoc_bssid); 2435 wpabuf_free(p2p->wfd_coupled_sink_info); 2436#endif /* CONFIG_WIFI_DISPLAY */ 2437 2438 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2439 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2440 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2441 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2442 p2p_flush(p2p); 2443 p2p_free_req_dev_types(p2p); 2444 os_free(p2p->cfg->dev_name); 2445 os_free(p2p->cfg->manufacturer); 2446 os_free(p2p->cfg->model_name); 2447 os_free(p2p->cfg->model_number); 2448 os_free(p2p->cfg->serial_number); 2449 os_free(p2p->cfg->pref_chan); 2450 os_free(p2p->groups); 2451 wpabuf_free(p2p->sd_resp); 2452 os_free(p2p->after_scan_tx); 2453 p2p_remove_wps_vendor_extensions(p2p); 2454 os_free(p2p->no_go_freq.range); 2455 os_free(p2p); 2456} 2457 2458 2459void p2p_flush(struct p2p_data *p2p) 2460{ 2461 struct p2p_device *dev, *prev; 2462 p2p_stop_find(p2p); 2463 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2464 list) { 2465 dl_list_del(&dev->list); 2466 p2p_device_free(p2p, dev); 2467 } 2468 p2p_free_sd_queries(p2p); 2469 os_free(p2p->after_scan_tx); 2470 p2p->after_scan_tx = NULL; 2471} 2472 2473 2474int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2475{ 2476 struct p2p_device *dev; 2477 2478 dev = p2p_get_device(p2p, addr); 2479 if (dev == NULL) 2480 return -1; 2481 2482 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 2483 2484 if (p2p->go_neg_peer == dev) 2485 p2p->go_neg_peer = NULL; 2486 2487 dev->wps_method = WPS_NOT_READY; 2488 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2489 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2490 2491 /* Check if after_scan_tx is for this peer. If so free it */ 2492 if (p2p->after_scan_tx && 2493 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2494 os_free(p2p->after_scan_tx); 2495 p2p->after_scan_tx = NULL; 2496 } 2497 2498 return 0; 2499} 2500 2501 2502int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2503{ 2504 os_free(p2p->cfg->dev_name); 2505 if (dev_name) { 2506 p2p->cfg->dev_name = os_strdup(dev_name); 2507 if (p2p->cfg->dev_name == NULL) 2508 return -1; 2509 } else 2510 p2p->cfg->dev_name = NULL; 2511 return 0; 2512} 2513 2514 2515int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2516{ 2517 os_free(p2p->cfg->manufacturer); 2518 p2p->cfg->manufacturer = NULL; 2519 if (manufacturer) { 2520 p2p->cfg->manufacturer = os_strdup(manufacturer); 2521 if (p2p->cfg->manufacturer == NULL) 2522 return -1; 2523 } 2524 2525 return 0; 2526} 2527 2528 2529int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2530{ 2531 os_free(p2p->cfg->model_name); 2532 p2p->cfg->model_name = NULL; 2533 if (model_name) { 2534 p2p->cfg->model_name = os_strdup(model_name); 2535 if (p2p->cfg->model_name == NULL) 2536 return -1; 2537 } 2538 2539 return 0; 2540} 2541 2542 2543int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2544{ 2545 os_free(p2p->cfg->model_number); 2546 p2p->cfg->model_number = NULL; 2547 if (model_number) { 2548 p2p->cfg->model_number = os_strdup(model_number); 2549 if (p2p->cfg->model_number == NULL) 2550 return -1; 2551 } 2552 2553 return 0; 2554} 2555 2556 2557int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2558{ 2559 os_free(p2p->cfg->serial_number); 2560 p2p->cfg->serial_number = NULL; 2561 if (serial_number) { 2562 p2p->cfg->serial_number = os_strdup(serial_number); 2563 if (p2p->cfg->serial_number == NULL) 2564 return -1; 2565 } 2566 2567 return 0; 2568} 2569 2570 2571void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2572{ 2573 p2p->cfg->config_methods = config_methods; 2574} 2575 2576 2577void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2578{ 2579 os_memcpy(p2p->cfg->uuid, uuid, 16); 2580} 2581 2582 2583int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2584{ 2585 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2586 return 0; 2587} 2588 2589 2590int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2591 size_t num_dev_types) 2592{ 2593 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2594 num_dev_types = P2P_SEC_DEVICE_TYPES; 2595 p2p->cfg->num_sec_dev_types = num_dev_types; 2596 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2597 return 0; 2598} 2599 2600 2601void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2602{ 2603 int i; 2604 2605 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2606 wpabuf_free(p2p->wps_vendor_ext[i]); 2607 p2p->wps_vendor_ext[i] = NULL; 2608 } 2609} 2610 2611 2612int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2613 const struct wpabuf *vendor_ext) 2614{ 2615 int i; 2616 2617 if (vendor_ext == NULL) 2618 return -1; 2619 2620 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2621 if (p2p->wps_vendor_ext[i] == NULL) 2622 break; 2623 } 2624 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2625 return -1; 2626 2627 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2628 if (p2p->wps_vendor_ext[i] == NULL) 2629 return -1; 2630 2631 return 0; 2632} 2633 2634 2635int p2p_set_country(struct p2p_data *p2p, const char *country) 2636{ 2637 os_memcpy(p2p->cfg->country, country, 3); 2638 return 0; 2639} 2640 2641 2642void p2p_continue_find(struct p2p_data *p2p) 2643{ 2644 struct p2p_device *dev; 2645 p2p_set_state(p2p, P2P_SEARCH); 2646 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2647 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2648 if (p2p_start_sd(p2p, dev) == 0) 2649 return; 2650 else 2651 break; 2652 } else if (dev->req_config_methods && 2653 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2654 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2655 MACSTR " (config methods 0x%x)", 2656 MAC2STR(dev->info.p2p_device_addr), 2657 dev->req_config_methods); 2658 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2659 return; 2660 } 2661 } 2662 2663 p2p_listen_in_find(p2p, 1); 2664} 2665 2666 2667static void p2p_sd_cb(struct p2p_data *p2p, int success) 2668{ 2669 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 2670 success); 2671 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2672 2673 if (!success) { 2674 if (p2p->sd_peer) { 2675 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2676 p2p->sd_peer = NULL; 2677 } 2678 p2p_continue_find(p2p); 2679 return; 2680 } 2681 2682 if (p2p->sd_peer == NULL) { 2683 p2p_dbg(p2p, "No SD peer entry known"); 2684 p2p_continue_find(p2p); 2685 return; 2686 } 2687 2688 /* Wait for response from the peer */ 2689 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2690 p2p_set_timeout(p2p, 0, 200000); 2691} 2692 2693 2694/** 2695 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2696 * @p2p: P2P module context from p2p_init() 2697 */ 2698static void p2p_retry_pd(struct p2p_data *p2p) 2699{ 2700 struct p2p_device *dev; 2701 2702 if (p2p->state != P2P_IDLE) 2703 return; 2704 2705 /* 2706 * Retry the prov disc req attempt only for the peer that the user had 2707 * requested. 2708 */ 2709 2710 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2711 if (os_memcmp(p2p->pending_pd_devaddr, 2712 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2713 continue; 2714 if (!dev->req_config_methods) 2715 continue; 2716 2717 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2718 MACSTR " (config methods 0x%x)", 2719 MAC2STR(dev->info.p2p_device_addr), 2720 dev->req_config_methods); 2721 p2p_send_prov_disc_req(p2p, dev, 2722 dev->flags & P2P_DEV_PD_FOR_JOIN, 2723 p2p->pd_force_freq); 2724 return; 2725 } 2726} 2727 2728 2729static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2730{ 2731 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 2732 success); 2733 2734 /* 2735 * Postpone resetting the pending action state till after we actually 2736 * time out. This allows us to take some action like notifying any 2737 * interested parties about no response to the request. 2738 * 2739 * When the timer (below) goes off we check in IDLE, SEARCH, or 2740 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2741 * requests in, if this was still pending and then raise notification. 2742 */ 2743 2744 if (!success) { 2745 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2746 2747 if (p2p->user_initiated_pd && 2748 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2749 { 2750 /* Retry request from timeout to avoid busy loops */ 2751 p2p->pending_action_state = P2P_PENDING_PD; 2752 p2p_set_timeout(p2p, 0, 50000); 2753 } else if (p2p->state != P2P_IDLE) 2754 p2p_continue_find(p2p); 2755 else if (p2p->user_initiated_pd) { 2756 p2p->pending_action_state = P2P_PENDING_PD; 2757 p2p_set_timeout(p2p, 0, 300000); 2758 } 2759 return; 2760 } 2761 2762 /* 2763 * This postponing, of resetting pending_action_state, needs to be 2764 * done only for user initiated PD requests and not internal ones. 2765 */ 2766 if (p2p->user_initiated_pd) 2767 p2p->pending_action_state = P2P_PENDING_PD; 2768 else 2769 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2770 2771 /* Wait for response from the peer */ 2772 if (p2p->state == P2P_SEARCH) 2773 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2774 p2p_set_timeout(p2p, 0, 200000); 2775} 2776 2777 2778int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2779 struct os_reltime *rx_time, int level, const u8 *ies, 2780 size_t ies_len) 2781{ 2782 if (os_reltime_before(rx_time, &p2p->find_start)) { 2783 /* 2784 * The driver may have cached (e.g., in cfg80211 BSS table) the 2785 * scan results for relatively long time. To avoid reporting 2786 * stale information, update P2P peers only based on results 2787 * that have based on frames received after the last p2p_find 2788 * operation was started. 2789 */ 2790 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 2791 " (rx_time=%u.%06u)", 2792 MAC2STR(bssid), (unsigned int) rx_time->sec, 2793 (unsigned int) rx_time->usec); 2794 return 0; 2795 } 2796 2797 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 2798 2799 return 0; 2800} 2801 2802 2803void p2p_scan_res_handled(struct p2p_data *p2p) 2804{ 2805 if (!p2p->p2p_scan_running) { 2806 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 2807 } 2808 p2p->p2p_scan_running = 0; 2809 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2810 2811 if (p2p_run_after_scan(p2p)) 2812 return; 2813 if (p2p->state == P2P_SEARCH) 2814 p2p_continue_find(p2p); 2815} 2816 2817 2818void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2819{ 2820 u8 *len; 2821 2822#ifdef CONFIG_WIFI_DISPLAY 2823 if (p2p->wfd_ie_probe_req) 2824 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2825#endif /* CONFIG_WIFI_DISPLAY */ 2826 2827 len = p2p_buf_add_ie_hdr(ies); 2828 p2p_buf_add_capability(ies, p2p->dev_capab & 2829 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2830 if (dev_id) 2831 p2p_buf_add_device_id(ies, dev_id); 2832 if (p2p->cfg->reg_class && p2p->cfg->channel) 2833 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2834 p2p->cfg->reg_class, 2835 p2p->cfg->channel); 2836 if (p2p->ext_listen_interval) 2837 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2838 p2p->ext_listen_interval); 2839 /* TODO: p2p_buf_add_operating_channel() if GO */ 2840 p2p_buf_update_ie_hdr(ies, len); 2841} 2842 2843 2844size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2845{ 2846 size_t len = 100; 2847 2848#ifdef CONFIG_WIFI_DISPLAY 2849 if (p2p && p2p->wfd_ie_probe_req) 2850 len += wpabuf_len(p2p->wfd_ie_probe_req); 2851#endif /* CONFIG_WIFI_DISPLAY */ 2852 2853 return len; 2854} 2855 2856 2857int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2858{ 2859 return p2p_attr_text(p2p_ie, buf, end); 2860} 2861 2862 2863static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2864{ 2865 struct p2p_device *dev = p2p->go_neg_peer; 2866 int timeout; 2867 2868 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 2869 2870 if (dev == NULL) { 2871 p2p_dbg(p2p, "No pending GO Negotiation"); 2872 return; 2873 } 2874 2875 if (success) { 2876 if (dev->flags & P2P_DEV_USER_REJECTED) { 2877 p2p_set_state(p2p, P2P_IDLE); 2878 return; 2879 } 2880 } else if (dev->go_neg_req_sent) { 2881 /* Cancel the increment from p2p_connect_send() on failure */ 2882 dev->go_neg_req_sent--; 2883 } 2884 2885 if (!success && 2886 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2887 !is_zero_ether_addr(dev->member_in_go_dev)) { 2888 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 2889 MAC2STR(dev->info.p2p_device_addr)); 2890 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2891 p2p_send_dev_disc_req(p2p, dev); 2892 return; 2893 } 2894 2895 /* 2896 * Use P2P find, if needed, to find the other device from its listen 2897 * channel. 2898 */ 2899 p2p_set_state(p2p, P2P_CONNECT); 2900 timeout = success ? 500000 : 100000; 2901 if (!success && p2p->go_neg_peer && 2902 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 2903 unsigned int r; 2904 /* 2905 * Peer is expected to wait our response and we will skip the 2906 * listen phase. Add some randomness to the wait time here to 2907 * make it less likely to hit cases where we could end up in 2908 * sync with peer not listening. 2909 */ 2910 os_get_random((u8 *) &r, sizeof(r)); 2911 timeout += r % 100000; 2912 } 2913 p2p_set_timeout(p2p, 0, timeout); 2914} 2915 2916 2917static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2918{ 2919 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 2920 success); 2921 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2922 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 2923 return; 2924 } 2925 p2p_set_state(p2p, P2P_CONNECT); 2926 p2p_set_timeout(p2p, 0, 500000); 2927} 2928 2929 2930static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 2931 const u8 *addr) 2932{ 2933 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 2934 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2935 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2936 p2p->go_neg_peer->status); 2937 } else if (success) { 2938 struct p2p_device *dev; 2939 dev = p2p_get_device(p2p, addr); 2940 if (dev && 2941 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 2942 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 2943 } 2944} 2945 2946 2947static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 2948 enum p2p_send_action_result result) 2949{ 2950 struct p2p_device *dev; 2951 2952 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 2953 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2954 if (result == P2P_SEND_ACTION_FAILED) { 2955 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 2956 return; 2957 } 2958 if (result == P2P_SEND_ACTION_NO_ACK) { 2959 /* 2960 * It looks like the TX status for GO Negotiation Confirm is 2961 * often showing failure even when the peer has actually 2962 * received the frame. Since the peer may change channels 2963 * immediately after having received the frame, we may not see 2964 * an Ack for retries, so just dropping a single frame may 2965 * trigger this. To allow the group formation to succeed if the 2966 * peer did indeed receive the frame, continue regardless of 2967 * the TX status. 2968 */ 2969 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 2970 } 2971 2972 dev = p2p->go_neg_peer; 2973 if (dev == NULL) 2974 return; 2975 2976 p2p_go_complete(p2p, dev); 2977} 2978 2979 2980void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 2981 const u8 *src, const u8 *bssid, 2982 enum p2p_send_action_result result) 2983{ 2984 enum p2p_pending_action_state state; 2985 int success; 2986 2987 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 2988 " src=" MACSTR " bssid=" MACSTR " result=%d", 2989 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 2990 MAC2STR(bssid), result); 2991 success = result == P2P_SEND_ACTION_SUCCESS; 2992 state = p2p->pending_action_state; 2993 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2994 switch (state) { 2995 case P2P_NO_PENDING_ACTION: 2996 if (p2p->after_scan_tx_in_progress) { 2997 p2p->after_scan_tx_in_progress = 0; 2998 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING && 2999 p2p_run_after_scan(p2p)) 3000 break; 3001 if (p2p->state == P2P_SEARCH) { 3002 p2p_dbg(p2p, "Continue find after after_scan_tx completion"); 3003 p2p_continue_find(p2p); 3004 } 3005 } 3006 break; 3007 case P2P_PENDING_GO_NEG_REQUEST: 3008 p2p_go_neg_req_cb(p2p, success); 3009 break; 3010 case P2P_PENDING_GO_NEG_RESPONSE: 3011 p2p_go_neg_resp_cb(p2p, success); 3012 break; 3013 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3014 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3015 break; 3016 case P2P_PENDING_GO_NEG_CONFIRM: 3017 p2p_go_neg_conf_cb(p2p, result); 3018 break; 3019 case P2P_PENDING_SD: 3020 p2p_sd_cb(p2p, success); 3021 break; 3022 case P2P_PENDING_PD: 3023 p2p_prov_disc_cb(p2p, success); 3024 break; 3025 case P2P_PENDING_INVITATION_REQUEST: 3026 p2p_invitation_req_cb(p2p, success); 3027 break; 3028 case P2P_PENDING_INVITATION_RESPONSE: 3029 p2p_invitation_resp_cb(p2p, success); 3030 break; 3031 case P2P_PENDING_DEV_DISC_REQUEST: 3032 p2p_dev_disc_req_cb(p2p, success); 3033 break; 3034 case P2P_PENDING_DEV_DISC_RESPONSE: 3035 p2p_dev_disc_resp_cb(p2p, success); 3036 break; 3037 case P2P_PENDING_GO_DISC_REQ: 3038 p2p_go_disc_req_cb(p2p, success); 3039 break; 3040 } 3041 3042 p2p->after_scan_tx_in_progress = 0; 3043} 3044 3045 3046void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3047 unsigned int duration) 3048{ 3049 if (freq == p2p->pending_client_disc_freq) { 3050 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3051 p2p->pending_client_disc_freq = 0; 3052 return; 3053 } 3054 3055 if (freq != p2p->pending_listen_freq) { 3056 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3057 freq, duration, p2p->pending_listen_freq); 3058 return; 3059 } 3060 3061 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3062 p2p->pending_listen_sec, p2p->pending_listen_usec, 3063 p2p->pending_listen_freq); 3064 p2p->in_listen = 1; 3065 p2p->drv_in_listen = freq; 3066 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3067 /* 3068 * Add 20 msec extra wait to avoid race condition with driver 3069 * remain-on-channel end event, i.e., give driver more time to 3070 * complete the operation before our timeout expires. 3071 */ 3072 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3073 p2p->pending_listen_usec + 20000); 3074 } 3075 3076 p2p->pending_listen_freq = 0; 3077} 3078 3079 3080int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3081{ 3082 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3083 p2p->drv_in_listen = 0; 3084 if (p2p->in_listen) 3085 return 0; /* Internal timeout will trigger the next step */ 3086 3087 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3088 if (p2p->go_neg_peer->connect_reqs >= 120) { 3089 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3090 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3091 return 0; 3092 } 3093 3094 p2p_set_state(p2p, P2P_CONNECT); 3095 p2p_connect_send(p2p, p2p->go_neg_peer); 3096 return 1; 3097 } else if (p2p->state == P2P_SEARCH) { 3098 if (p2p->p2p_scan_running) { 3099 /* 3100 * Search is already in progress. This can happen if 3101 * an Action frame RX is reported immediately after 3102 * the end of a remain-on-channel operation and the 3103 * response frame to that is sent using an offchannel 3104 * operation while in p2p_find. Avoid an attempt to 3105 * restart a scan here. 3106 */ 3107 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3108 return 1; 3109 } 3110 if (p2p->pending_listen_freq) { 3111 /* 3112 * Better wait a bit if the driver is unable to start 3113 * offchannel operation for some reason. p2p_search() 3114 * will be started from internal timeout. 3115 */ 3116 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3117 p2p_set_timeout(p2p, 0, 100000); 3118 return 1; 3119 } 3120 if (p2p->search_delay) { 3121 p2p_dbg(p2p, "Delay search operation by %u ms", 3122 p2p->search_delay); 3123 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3124 (p2p->search_delay % 1000) * 1000); 3125 return 1; 3126 } 3127 p2p_search(p2p); 3128 return 1; 3129 } 3130 3131 return 0; 3132} 3133 3134 3135static void p2p_timeout_connect(struct p2p_data *p2p) 3136{ 3137 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3138 if (p2p->go_neg_peer && 3139 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3140 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3141 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3142 return; 3143 } 3144 if (p2p->go_neg_peer && 3145 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3146 p2p->go_neg_peer->connect_reqs < 120) { 3147 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3148 p2p_connect_send(p2p, p2p->go_neg_peer); 3149 return; 3150 } 3151 3152 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3153 p2p_listen_in_find(p2p, 0); 3154} 3155 3156 3157static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3158{ 3159 if (p2p->go_neg_peer) { 3160 if (p2p->drv_in_listen) { 3161 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3162 return; 3163 } 3164 3165 if (p2p->go_neg_peer->connect_reqs >= 120) { 3166 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3167 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3168 return; 3169 } 3170 3171 p2p_set_state(p2p, P2P_CONNECT); 3172 p2p_connect_send(p2p, p2p->go_neg_peer); 3173 } else 3174 p2p_set_state(p2p, P2P_IDLE); 3175} 3176 3177 3178static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3179{ 3180 /* 3181 * TODO: could remain constantly in Listen state for some time if there 3182 * are no other concurrent uses for the radio. For now, go to listen 3183 * state once per second to give other uses a chance to use the radio. 3184 */ 3185 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3186 p2p_set_timeout(p2p, 0, 500000); 3187} 3188 3189 3190static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3191{ 3192 struct p2p_device *dev = p2p->go_neg_peer; 3193 3194 if (dev == NULL) { 3195 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 3196 return; 3197 } 3198 3199 dev->wait_count++; 3200 if (dev->wait_count >= 120) { 3201 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation"); 3202 p2p_go_neg_failed(p2p, dev, -1); 3203 return; 3204 } 3205 3206 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 3207 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3208 p2p_listen_in_find(p2p, 0); 3209} 3210 3211 3212static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3213{ 3214 p2p_dbg(p2p, "Service Discovery Query timeout"); 3215 if (p2p->sd_peer) { 3216 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3217 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3218 p2p->sd_peer = NULL; 3219 } 3220 p2p_continue_find(p2p); 3221} 3222 3223 3224static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3225{ 3226 p2p_dbg(p2p, "Provision Discovery Request timeout"); 3227 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3228 p2p_continue_find(p2p); 3229} 3230 3231 3232static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3233{ 3234 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3235 3236 /* 3237 * For user initiated PD requests that we have not gotten any responses 3238 * for while in IDLE state, we retry them a couple of times before 3239 * giving up. 3240 */ 3241 if (!p2p->user_initiated_pd) 3242 return; 3243 3244 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 3245 3246 if (p2p->pd_retries) { 3247 p2p->pd_retries--; 3248 p2p_retry_pd(p2p); 3249 } else { 3250 struct p2p_device *dev; 3251 int for_join = 0; 3252 3253 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3254 if (os_memcmp(p2p->pending_pd_devaddr, 3255 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3256 continue; 3257 if (dev->req_config_methods && 3258 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3259 for_join = 1; 3260 } 3261 3262 if (p2p->cfg->prov_disc_fail) 3263 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3264 p2p->pending_pd_devaddr, 3265 for_join ? 3266 P2P_PROV_DISC_TIMEOUT_JOIN : 3267 P2P_PROV_DISC_TIMEOUT); 3268 p2p_reset_pending_pd(p2p); 3269 } 3270} 3271 3272 3273static void p2p_timeout_invite(struct p2p_data *p2p) 3274{ 3275 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3276 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3277 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3278 /* 3279 * Better remain on operating channel instead of listen channel 3280 * when running a group. 3281 */ 3282 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 3283 p2p_set_timeout(p2p, 0, 100000); 3284 return; 3285 } 3286 p2p_listen_in_find(p2p, 0); 3287} 3288 3289 3290static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3291{ 3292 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3293 p2p_set_state(p2p, P2P_INVITE); 3294 p2p_invite_send(p2p, p2p->invite_peer, 3295 p2p->invite_go_dev_addr); 3296 } else { 3297 if (p2p->invite_peer) { 3298 p2p_dbg(p2p, "Invitation Request retry limit reached"); 3299 if (p2p->cfg->invitation_result) 3300 p2p->cfg->invitation_result( 3301 p2p->cfg->cb_ctx, -1, NULL, NULL, 3302 p2p->invite_peer->info.p2p_device_addr, 3303 0); 3304 } 3305 p2p_set_state(p2p, P2P_IDLE); 3306 } 3307} 3308 3309 3310static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3311{ 3312 struct p2p_data *p2p = eloop_ctx; 3313 3314 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 3315 3316 p2p->in_listen = 0; 3317 3318 switch (p2p->state) { 3319 case P2P_IDLE: 3320 /* Check if we timed out waiting for PD req */ 3321 if (p2p->pending_action_state == P2P_PENDING_PD) 3322 p2p_timeout_prov_disc_req(p2p); 3323 break; 3324 case P2P_SEARCH: 3325 /* Check if we timed out waiting for PD req */ 3326 if (p2p->pending_action_state == P2P_PENDING_PD) 3327 p2p_timeout_prov_disc_req(p2p); 3328 if (p2p->search_delay && !p2p->in_search_delay) { 3329 p2p_dbg(p2p, "Delay search operation by %u ms", 3330 p2p->search_delay); 3331 p2p->in_search_delay = 1; 3332 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3333 (p2p->search_delay % 1000) * 1000); 3334 break; 3335 } 3336 p2p->in_search_delay = 0; 3337 p2p_search(p2p); 3338 break; 3339 case P2P_CONNECT: 3340 p2p_timeout_connect(p2p); 3341 break; 3342 case P2P_CONNECT_LISTEN: 3343 p2p_timeout_connect_listen(p2p); 3344 break; 3345 case P2P_GO_NEG: 3346 break; 3347 case P2P_LISTEN_ONLY: 3348 /* Check if we timed out waiting for PD req */ 3349 if (p2p->pending_action_state == P2P_PENDING_PD) 3350 p2p_timeout_prov_disc_req(p2p); 3351 3352 if (p2p->ext_listen_only) { 3353 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 3354 p2p->ext_listen_only = 0; 3355 p2p_set_state(p2p, P2P_IDLE); 3356 } 3357 break; 3358 case P2P_WAIT_PEER_CONNECT: 3359 p2p_timeout_wait_peer_connect(p2p); 3360 break; 3361 case P2P_WAIT_PEER_IDLE: 3362 p2p_timeout_wait_peer_idle(p2p); 3363 break; 3364 case P2P_SD_DURING_FIND: 3365 p2p_timeout_sd_during_find(p2p); 3366 break; 3367 case P2P_PROVISIONING: 3368 break; 3369 case P2P_PD_DURING_FIND: 3370 p2p_timeout_prov_disc_during_find(p2p); 3371 break; 3372 case P2P_INVITE: 3373 p2p_timeout_invite(p2p); 3374 break; 3375 case P2P_INVITE_LISTEN: 3376 p2p_timeout_invite_listen(p2p); 3377 break; 3378 } 3379} 3380 3381 3382int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3383{ 3384 struct p2p_device *dev; 3385 3386 dev = p2p_get_device(p2p, peer_addr); 3387 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 3388 MACSTR, MAC2STR(peer_addr)); 3389 if (dev == NULL) { 3390 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 3391 return -1; 3392 } 3393 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3394 dev->flags |= P2P_DEV_USER_REJECTED; 3395 return 0; 3396} 3397 3398 3399const char * p2p_wps_method_text(enum p2p_wps_method method) 3400{ 3401 switch (method) { 3402 case WPS_NOT_READY: 3403 return "not-ready"; 3404 case WPS_PIN_DISPLAY: 3405 return "Display"; 3406 case WPS_PIN_KEYPAD: 3407 return "Keypad"; 3408 case WPS_PBC: 3409 return "PBC"; 3410 } 3411 3412 return "??"; 3413} 3414 3415 3416static const char * p2p_go_state_text(enum p2p_go_state go_state) 3417{ 3418 switch (go_state) { 3419 case UNKNOWN_GO: 3420 return "unknown"; 3421 case LOCAL_GO: 3422 return "local"; 3423 case REMOTE_GO: 3424 return "remote"; 3425 } 3426 3427 return "??"; 3428} 3429 3430 3431const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3432 const u8 *addr, int next) 3433{ 3434 struct p2p_device *dev; 3435 3436 if (addr) 3437 dev = p2p_get_device(p2p, addr); 3438 else 3439 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3440 3441 if (dev && next) { 3442 dev = dl_list_first(&dev->list, struct p2p_device, list); 3443 if (&dev->list == &p2p->devices) 3444 dev = NULL; 3445 } 3446 3447 if (dev == NULL) 3448 return NULL; 3449 3450 return &dev->info; 3451} 3452 3453 3454int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3455 char *buf, size_t buflen) 3456{ 3457 struct p2p_device *dev; 3458 int res; 3459 char *pos, *end; 3460 struct os_reltime now; 3461 3462 if (info == NULL) 3463 return -1; 3464 3465 dev = (struct p2p_device *) (((u8 *) info) - 3466 offsetof(struct p2p_device, info)); 3467 3468 pos = buf; 3469 end = buf + buflen; 3470 3471 os_get_reltime(&now); 3472 res = os_snprintf(pos, end - pos, 3473 "age=%d\n" 3474 "listen_freq=%d\n" 3475 "wps_method=%s\n" 3476 "interface_addr=" MACSTR "\n" 3477 "member_in_go_dev=" MACSTR "\n" 3478 "member_in_go_iface=" MACSTR "\n" 3479 "go_neg_req_sent=%d\n" 3480 "go_state=%s\n" 3481 "dialog_token=%u\n" 3482 "intended_addr=" MACSTR "\n" 3483 "country=%c%c\n" 3484 "oper_freq=%d\n" 3485 "req_config_methods=0x%x\n" 3486 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3487 "status=%d\n" 3488 "wait_count=%u\n" 3489 "invitation_reqs=%u\n", 3490 (int) (now.sec - dev->last_seen.sec), 3491 dev->listen_freq, 3492 p2p_wps_method_text(dev->wps_method), 3493 MAC2STR(dev->interface_addr), 3494 MAC2STR(dev->member_in_go_dev), 3495 MAC2STR(dev->member_in_go_iface), 3496 dev->go_neg_req_sent, 3497 p2p_go_state_text(dev->go_state), 3498 dev->dialog_token, 3499 MAC2STR(dev->intended_addr), 3500 dev->country[0] ? dev->country[0] : '_', 3501 dev->country[1] ? dev->country[1] : '_', 3502 dev->oper_freq, 3503 dev->req_config_methods, 3504 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3505 "[PROBE_REQ_ONLY]" : "", 3506 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3507 dev->flags & P2P_DEV_NOT_YET_READY ? 3508 "[NOT_YET_READY]" : "", 3509 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3510 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3511 "", 3512 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3513 "[PD_PEER_DISPLAY]" : "", 3514 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3515 "[PD_PEER_KEYPAD]" : "", 3516 dev->flags & P2P_DEV_USER_REJECTED ? 3517 "[USER_REJECTED]" : "", 3518 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3519 "[PEER_WAITING_RESPONSE]" : "", 3520 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3521 "[PREFER_PERSISTENT_GROUP]" : "", 3522 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3523 "[WAIT_GO_NEG_RESPONSE]" : "", 3524 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3525 "[WAIT_GO_NEG_CONFIRM]" : "", 3526 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3527 "[GROUP_CLIENT_ONLY]" : "", 3528 dev->flags & P2P_DEV_FORCE_FREQ ? 3529 "[FORCE_FREQ]" : "", 3530 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3531 "[PD_FOR_JOIN]" : "", 3532 dev->status, 3533 dev->wait_count, 3534 dev->invitation_reqs); 3535 if (res < 0 || res >= end - pos) 3536 return pos - buf; 3537 pos += res; 3538 3539 if (dev->ext_listen_period) { 3540 res = os_snprintf(pos, end - pos, 3541 "ext_listen_period=%u\n" 3542 "ext_listen_interval=%u\n", 3543 dev->ext_listen_period, 3544 dev->ext_listen_interval); 3545 if (res < 0 || res >= end - pos) 3546 return pos - buf; 3547 pos += res; 3548 } 3549 3550 if (dev->oper_ssid_len) { 3551 res = os_snprintf(pos, end - pos, 3552 "oper_ssid=%s\n", 3553 wpa_ssid_txt(dev->oper_ssid, 3554 dev->oper_ssid_len)); 3555 if (res < 0 || res >= end - pos) 3556 return pos - buf; 3557 pos += res; 3558 } 3559 3560#ifdef CONFIG_WIFI_DISPLAY 3561 if (dev->info.wfd_subelems) { 3562 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3563 if (res < 0 || res >= end - pos) 3564 return pos - buf; 3565 pos += res; 3566 3567 pos += wpa_snprintf_hex(pos, end - pos, 3568 wpabuf_head(dev->info.wfd_subelems), 3569 wpabuf_len(dev->info.wfd_subelems)); 3570 3571 res = os_snprintf(pos, end - pos, "\n"); 3572 if (res < 0 || res >= end - pos) 3573 return pos - buf; 3574 pos += res; 3575 } 3576#endif /* CONFIG_WIFI_DISPLAY */ 3577 3578 return pos - buf; 3579} 3580 3581 3582int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3583{ 3584 return p2p_get_device(p2p, addr) != NULL; 3585} 3586 3587 3588void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3589{ 3590 if (enabled) { 3591 p2p_dbg(p2p, "Client discoverability enabled"); 3592 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3593 } else { 3594 p2p_dbg(p2p, "Client discoverability disabled"); 3595 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3596 } 3597} 3598 3599 3600static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3601 u32 duration2, u32 interval2) 3602{ 3603 struct wpabuf *req; 3604 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3605 u8 *len; 3606 3607 req = wpabuf_alloc(100); 3608 if (req == NULL) 3609 return NULL; 3610 3611 if (duration1 || interval1) { 3612 os_memset(&desc1, 0, sizeof(desc1)); 3613 desc1.count_type = 1; 3614 desc1.duration = duration1; 3615 desc1.interval = interval1; 3616 ptr1 = &desc1; 3617 3618 if (duration2 || interval2) { 3619 os_memset(&desc2, 0, sizeof(desc2)); 3620 desc2.count_type = 2; 3621 desc2.duration = duration2; 3622 desc2.interval = interval2; 3623 ptr2 = &desc2; 3624 } 3625 } 3626 3627 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3628 len = p2p_buf_add_ie_hdr(req); 3629 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3630 p2p_buf_update_ie_hdr(req, len); 3631 3632 return req; 3633} 3634 3635 3636int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3637 const u8 *own_interface_addr, unsigned int freq, 3638 u32 duration1, u32 interval1, u32 duration2, 3639 u32 interval2) 3640{ 3641 struct wpabuf *req; 3642 3643 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 3644 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 3645 "dur2=%u int2=%u", 3646 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3647 freq, duration1, interval1, duration2, interval2); 3648 3649 req = p2p_build_presence_req(duration1, interval1, duration2, 3650 interval2); 3651 if (req == NULL) 3652 return -1; 3653 3654 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3655 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3656 go_interface_addr, 3657 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3658 p2p_dbg(p2p, "Failed to send Action frame"); 3659 } 3660 wpabuf_free(req); 3661 3662 return 0; 3663} 3664 3665 3666static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3667 size_t noa_len, u8 dialog_token) 3668{ 3669 struct wpabuf *resp; 3670 u8 *len; 3671 3672 resp = wpabuf_alloc(100 + noa_len); 3673 if (resp == NULL) 3674 return NULL; 3675 3676 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3677 len = p2p_buf_add_ie_hdr(resp); 3678 p2p_buf_add_status(resp, status); 3679 if (noa) { 3680 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3681 wpabuf_put_le16(resp, noa_len); 3682 wpabuf_put_data(resp, noa, noa_len); 3683 } else 3684 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3685 p2p_buf_update_ie_hdr(resp, len); 3686 3687 return resp; 3688} 3689 3690 3691static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3692 const u8 *sa, const u8 *data, size_t len, 3693 int rx_freq) 3694{ 3695 struct p2p_message msg; 3696 u8 status; 3697 struct wpabuf *resp; 3698 size_t g; 3699 struct p2p_group *group = NULL; 3700 int parsed = 0; 3701 u8 noa[50]; 3702 int noa_len; 3703 3704 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 3705 3706 for (g = 0; g < p2p->num_groups; g++) { 3707 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3708 ETH_ALEN) == 0) { 3709 group = p2p->groups[g]; 3710 break; 3711 } 3712 } 3713 if (group == NULL) { 3714 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 3715 MACSTR, MAC2STR(da)); 3716 return; 3717 } 3718 3719 if (p2p_parse(data, len, &msg) < 0) { 3720 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 3721 status = P2P_SC_FAIL_INVALID_PARAMS; 3722 goto fail; 3723 } 3724 parsed = 1; 3725 3726 if (msg.noa == NULL) { 3727 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 3728 status = P2P_SC_FAIL_INVALID_PARAMS; 3729 goto fail; 3730 } 3731 3732 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3733 3734fail: 3735 if (p2p->cfg->get_noa) 3736 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3737 sizeof(noa)); 3738 else 3739 noa_len = -1; 3740 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3741 noa_len > 0 ? noa_len : 0, 3742 msg.dialog_token); 3743 if (parsed) 3744 p2p_parse_free(&msg); 3745 if (resp == NULL) 3746 return; 3747 3748 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3749 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3750 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3751 p2p_dbg(p2p, "Failed to send Action frame"); 3752 } 3753 wpabuf_free(resp); 3754} 3755 3756 3757static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3758 const u8 *sa, const u8 *data, size_t len) 3759{ 3760 struct p2p_message msg; 3761 3762 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 3763 3764 if (p2p_parse(data, len, &msg) < 0) { 3765 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 3766 return; 3767 } 3768 3769 if (msg.status == NULL || msg.noa == NULL) { 3770 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 3771 p2p_parse_free(&msg); 3772 return; 3773 } 3774 3775 if (p2p->cfg->presence_resp) { 3776 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status, 3777 msg.noa, msg.noa_len); 3778 } 3779 3780 if (*msg.status) { 3781 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 3782 *msg.status); 3783 p2p_parse_free(&msg); 3784 return; 3785 } 3786 3787 p2p_dbg(p2p, "P2P Presence Request was accepted"); 3788 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3789 msg.noa, msg.noa_len); 3790 /* TODO: process NoA */ 3791 p2p_parse_free(&msg); 3792} 3793 3794 3795static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3796{ 3797 struct p2p_data *p2p = eloop_ctx; 3798 3799 if (p2p->ext_listen_interval) { 3800 /* Schedule next extended listen timeout */ 3801 eloop_register_timeout(p2p->ext_listen_interval_sec, 3802 p2p->ext_listen_interval_usec, 3803 p2p_ext_listen_timeout, p2p, NULL); 3804 } 3805 3806 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3807 /* 3808 * This should not really happen, but it looks like the Listen 3809 * command may fail is something else (e.g., a scan) was 3810 * running at an inconvenient time. As a workaround, allow new 3811 * Extended Listen operation to be started. 3812 */ 3813 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 3814 p2p->ext_listen_only = 0; 3815 p2p_set_state(p2p, P2P_IDLE); 3816 } 3817 3818 if (p2p->state != P2P_IDLE) { 3819 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 3820 return; 3821 } 3822 3823 p2p_dbg(p2p, "Extended Listen timeout"); 3824 p2p->ext_listen_only = 1; 3825 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3826 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 3827 p2p->ext_listen_only = 0; 3828 } 3829} 3830 3831 3832int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3833 unsigned int interval) 3834{ 3835 if (period > 65535 || interval > 65535 || period > interval || 3836 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3837 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 3838 period, interval); 3839 return -1; 3840 } 3841 3842 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3843 3844 if (interval == 0) { 3845 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 3846 p2p->ext_listen_period = 0; 3847 p2p->ext_listen_interval = 0; 3848 return 0; 3849 } 3850 3851 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 3852 period, interval); 3853 p2p->ext_listen_period = period; 3854 p2p->ext_listen_interval = interval; 3855 p2p->ext_listen_interval_sec = interval / 1000; 3856 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3857 3858 eloop_register_timeout(p2p->ext_listen_interval_sec, 3859 p2p->ext_listen_interval_usec, 3860 p2p_ext_listen_timeout, p2p, NULL); 3861 3862 return 0; 3863} 3864 3865 3866void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3867 const u8 *ie, size_t ie_len) 3868{ 3869 struct p2p_message msg; 3870 3871 if (bssid == NULL || ie == NULL) 3872 return; 3873 3874 os_memset(&msg, 0, sizeof(msg)); 3875 if (p2p_parse_ies(ie, ie_len, &msg)) 3876 return; 3877 if (msg.minor_reason_code == NULL) 3878 return; 3879 3880 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 3881 " reason_code=%u minor_reason_code=%u", 3882 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3883 3884 p2p_parse_free(&msg); 3885} 3886 3887 3888void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3889 const u8 *ie, size_t ie_len) 3890{ 3891 struct p2p_message msg; 3892 3893 if (bssid == NULL || ie == NULL) 3894 return; 3895 3896 os_memset(&msg, 0, sizeof(msg)); 3897 if (p2p_parse_ies(ie, ie_len, &msg)) 3898 return; 3899 if (msg.minor_reason_code == NULL) 3900 return; 3901 3902 p2p_dbg(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 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 3914 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 3915 } else { 3916 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 3917 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 3918 } 3919} 3920 3921 3922int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 3923{ 3924 if (p2p_channel_to_freq(reg_class, channel) < 0) 3925 return -1; 3926 3927 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 3928 reg_class, channel); 3929 p2p->cfg->reg_class = reg_class; 3930 p2p->cfg->channel = channel; 3931 3932 return 0; 3933} 3934 3935 3936int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 3937{ 3938 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 3939 if (postfix == NULL) { 3940 p2p->cfg->ssid_postfix_len = 0; 3941 return 0; 3942 } 3943 if (len > sizeof(p2p->cfg->ssid_postfix)) 3944 return -1; 3945 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 3946 p2p->cfg->ssid_postfix_len = len; 3947 return 0; 3948} 3949 3950 3951int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 3952 int cfg_op_channel) 3953{ 3954 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 3955 return -1; 3956 3957 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 3958 op_reg_class, op_channel); 3959 p2p->cfg->op_reg_class = op_reg_class; 3960 p2p->cfg->op_channel = op_channel; 3961 p2p->cfg->cfg_op_channel = cfg_op_channel; 3962 return 0; 3963} 3964 3965 3966int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 3967 const struct p2p_channel *pref_chan) 3968{ 3969 struct p2p_channel *n; 3970 3971 if (pref_chan) { 3972 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 3973 if (n == NULL) 3974 return -1; 3975 os_memcpy(n, pref_chan, 3976 num_pref_chan * sizeof(struct p2p_channel)); 3977 } else 3978 n = NULL; 3979 3980 os_free(p2p->cfg->pref_chan); 3981 p2p->cfg->pref_chan = n; 3982 p2p->cfg->num_pref_chan = num_pref_chan; 3983 3984 return 0; 3985} 3986 3987 3988int p2p_set_no_go_freq(struct p2p_data *p2p, 3989 const struct wpa_freq_range_list *list) 3990{ 3991 struct wpa_freq_range *tmp; 3992 3993 if (list == NULL || list->num == 0) { 3994 os_free(p2p->no_go_freq.range); 3995 p2p->no_go_freq.range = NULL; 3996 p2p->no_go_freq.num = 0; 3997 return 0; 3998 } 3999 4000 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range)); 4001 if (tmp == NULL) 4002 return -1; 4003 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range)); 4004 os_free(p2p->no_go_freq.range); 4005 p2p->no_go_freq.range = tmp; 4006 p2p->no_go_freq.num = list->num; 4007 p2p_dbg(p2p, "Updated no GO chan list"); 4008 4009 return 0; 4010} 4011 4012 4013int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4014 u8 *iface_addr) 4015{ 4016 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4017 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4018 return -1; 4019 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4020 return 0; 4021} 4022 4023 4024int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4025 u8 *dev_addr) 4026{ 4027 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4028 if (dev == NULL) 4029 return -1; 4030 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4031 return 0; 4032} 4033 4034 4035void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4036{ 4037 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4038 if (is_zero_ether_addr(p2p->peer_filter)) 4039 p2p_dbg(p2p, "Disable peer filter"); 4040 else 4041 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4042 MAC2STR(p2p->peer_filter)); 4043} 4044 4045 4046void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4047{ 4048 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4049 if (p2p->cross_connect == enabled) 4050 return; 4051 p2p->cross_connect = enabled; 4052 /* TODO: may need to tear down any action group where we are GO(?) */ 4053} 4054 4055 4056int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4057{ 4058 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4059 if (dev == NULL) 4060 return -1; 4061 if (dev->oper_freq <= 0) 4062 return -1; 4063 return dev->oper_freq; 4064} 4065 4066 4067void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4068{ 4069 p2p_dbg(p2p, "Intra BSS distribution %s", 4070 enabled ? "enabled" : "disabled"); 4071 p2p->cfg->p2p_intra_bss = enabled; 4072} 4073 4074 4075void p2p_update_channel_list(struct p2p_data *p2p, 4076 const struct p2p_channels *chan, 4077 const struct p2p_channels *cli_chan) 4078{ 4079 p2p_dbg(p2p, "Update channel list"); 4080 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4081 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 4082 os_memcpy(&p2p->cfg->cli_channels, cli_chan, 4083 sizeof(struct p2p_channels)); 4084 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 4085} 4086 4087 4088int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4089 const u8 *src, const u8 *bssid, const u8 *buf, 4090 size_t len, unsigned int wait_time) 4091{ 4092 if (p2p->p2p_scan_running) { 4093 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes"); 4094 if (p2p->after_scan_tx) { 4095 p2p_dbg(p2p, "Dropped previous pending Action frame TX"); 4096 os_free(p2p->after_scan_tx); 4097 } 4098 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4099 len); 4100 if (p2p->after_scan_tx == NULL) 4101 return -1; 4102 p2p->after_scan_tx->freq = freq; 4103 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4104 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4105 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4106 p2p->after_scan_tx->len = len; 4107 p2p->after_scan_tx->wait_time = wait_time; 4108 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4109 return 0; 4110 } 4111 4112 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4113 buf, len, wait_time); 4114} 4115 4116 4117void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4118 int freq_overall) 4119{ 4120 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 4121 freq_24, freq_5, freq_overall); 4122 p2p->best_freq_24 = freq_24; 4123 p2p->best_freq_5 = freq_5; 4124 p2p->best_freq_overall = freq_overall; 4125} 4126 4127 4128void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 4129{ 4130 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 4131 p2p->own_freq_preference = freq; 4132} 4133 4134 4135const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4136{ 4137 if (p2p == NULL || p2p->go_neg_peer == NULL) 4138 return NULL; 4139 return p2p->go_neg_peer->info.p2p_device_addr; 4140} 4141 4142 4143const struct p2p_peer_info * 4144p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4145{ 4146 struct p2p_device *dev; 4147 4148 if (addr) { 4149 dev = p2p_get_device(p2p, addr); 4150 if (!dev) 4151 return NULL; 4152 4153 if (!next) { 4154 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4155 return NULL; 4156 4157 return &dev->info; 4158 } else { 4159 do { 4160 dev = dl_list_first(&dev->list, 4161 struct p2p_device, 4162 list); 4163 if (&dev->list == &p2p->devices) 4164 return NULL; 4165 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4166 } 4167 } else { 4168 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4169 if (!dev) 4170 return NULL; 4171 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4172 dev = dl_list_first(&dev->list, 4173 struct p2p_device, 4174 list); 4175 if (&dev->list == &p2p->devices) 4176 return NULL; 4177 } 4178 } 4179 4180 return &dev->info; 4181} 4182 4183 4184int p2p_in_progress(struct p2p_data *p2p) 4185{ 4186 if (p2p == NULL) 4187 return 0; 4188 if (p2p->state == P2P_SEARCH) 4189 return 2; 4190 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4191} 4192 4193 4194void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4195 u8 client_timeout) 4196{ 4197 if (p2p) { 4198 p2p->go_timeout = go_timeout; 4199 p2p->client_timeout = client_timeout; 4200 } 4201} 4202 4203 4204#ifdef CONFIG_WIFI_DISPLAY 4205 4206static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4207{ 4208 size_t g; 4209 struct p2p_group *group; 4210 4211 for (g = 0; g < p2p->num_groups; g++) { 4212 group = p2p->groups[g]; 4213 p2p_group_force_beacon_update_ies(group); 4214 } 4215} 4216 4217 4218int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4219{ 4220 wpabuf_free(p2p->wfd_ie_beacon); 4221 p2p->wfd_ie_beacon = ie; 4222 p2p_update_wfd_ie_groups(p2p); 4223 return 0; 4224} 4225 4226 4227int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4228{ 4229 wpabuf_free(p2p->wfd_ie_probe_req); 4230 p2p->wfd_ie_probe_req = ie; 4231 return 0; 4232} 4233 4234 4235int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4236{ 4237 wpabuf_free(p2p->wfd_ie_probe_resp); 4238 p2p->wfd_ie_probe_resp = ie; 4239 p2p_update_wfd_ie_groups(p2p); 4240 return 0; 4241} 4242 4243 4244int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4245{ 4246 wpabuf_free(p2p->wfd_ie_assoc_req); 4247 p2p->wfd_ie_assoc_req = ie; 4248 return 0; 4249} 4250 4251 4252int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4253{ 4254 wpabuf_free(p2p->wfd_ie_invitation); 4255 p2p->wfd_ie_invitation = ie; 4256 return 0; 4257} 4258 4259 4260int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4261{ 4262 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4263 p2p->wfd_ie_prov_disc_req = ie; 4264 return 0; 4265} 4266 4267 4268int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4269{ 4270 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4271 p2p->wfd_ie_prov_disc_resp = ie; 4272 return 0; 4273} 4274 4275 4276int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4277{ 4278 wpabuf_free(p2p->wfd_ie_go_neg); 4279 p2p->wfd_ie_go_neg = ie; 4280 return 0; 4281} 4282 4283 4284int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4285{ 4286 wpabuf_free(p2p->wfd_dev_info); 4287 if (elem) { 4288 p2p->wfd_dev_info = wpabuf_dup(elem); 4289 if (p2p->wfd_dev_info == NULL) 4290 return -1; 4291 } else 4292 p2p->wfd_dev_info = NULL; 4293 4294 return 0; 4295} 4296 4297 4298int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4299{ 4300 wpabuf_free(p2p->wfd_assoc_bssid); 4301 if (elem) { 4302 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4303 if (p2p->wfd_assoc_bssid == NULL) 4304 return -1; 4305 } else 4306 p2p->wfd_assoc_bssid = NULL; 4307 4308 return 0; 4309} 4310 4311 4312int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4313 const struct wpabuf *elem) 4314{ 4315 wpabuf_free(p2p->wfd_coupled_sink_info); 4316 if (elem) { 4317 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4318 if (p2p->wfd_coupled_sink_info == NULL) 4319 return -1; 4320 } else 4321 p2p->wfd_coupled_sink_info = NULL; 4322 4323 return 0; 4324} 4325 4326#endif /* CONFIG_WIFI_DISPLAY */ 4327 4328 4329int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4330 int max_disc_tu) 4331{ 4332 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4333 return -1; 4334 4335 p2p->min_disc_int = min_disc_int; 4336 p2p->max_disc_int = max_disc_int; 4337 p2p->max_disc_tu = max_disc_tu; 4338 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 4339 min_disc_int, max_disc_int, max_disc_tu); 4340 4341 return 0; 4342} 4343 4344 4345void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 4346{ 4347 va_list ap; 4348 char buf[500]; 4349 4350 if (!p2p->cfg->debug_print) 4351 return; 4352 4353 va_start(ap, fmt); 4354 vsnprintf(buf, sizeof(buf), fmt, ap); 4355 buf[sizeof(buf) - 1] = '\0'; 4356 va_end(ap); 4357 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 4358} 4359 4360 4361void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 4362{ 4363 va_list ap; 4364 char buf[500]; 4365 4366 if (!p2p->cfg->debug_print) 4367 return; 4368 4369 va_start(ap, fmt); 4370 vsnprintf(buf, sizeof(buf), fmt, ap); 4371 buf[sizeof(buf) - 1] = '\0'; 4372 va_end(ap); 4373 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 4374} 4375 4376 4377void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 4378{ 4379 va_list ap; 4380 char buf[500]; 4381 4382 if (!p2p->cfg->debug_print) 4383 return; 4384 4385 va_start(ap, fmt); 4386 vsnprintf(buf, sizeof(buf), fmt, ap); 4387 buf[sizeof(buf) - 1] = '\0'; 4388 va_end(ap); 4389 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 4390} 4391