p2p.c revision fb79edc9df1f20461e90e478363d207348213d35
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)); 123 124#ifdef ANDROID_P2P 125 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 126 if(&dev->list == p2p->sd_dev_list) 127 p2p->sd_dev_list = dev->list.next; 128#endif 129 dl_list_del(&dev->list); 130 p2p_device_free(p2p, dev); 131 } 132} 133 134 135static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx) 136{ 137 struct p2p_data *p2p = eloop_ctx; 138 p2p_expire_peers(p2p); 139 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 140 p2p_expiration_timeout, p2p, NULL); 141} 142 143 144static const char * p2p_state_txt(int state) 145{ 146 switch (state) { 147 case P2P_IDLE: 148 return "IDLE"; 149 case P2P_SEARCH: 150 return "SEARCH"; 151 case P2P_CONNECT: 152 return "CONNECT"; 153 case P2P_CONNECT_LISTEN: 154 return "CONNECT_LISTEN"; 155 case P2P_GO_NEG: 156 return "GO_NEG"; 157 case P2P_LISTEN_ONLY: 158 return "LISTEN_ONLY"; 159 case P2P_WAIT_PEER_CONNECT: 160 return "WAIT_PEER_CONNECT"; 161 case P2P_WAIT_PEER_IDLE: 162 return "WAIT_PEER_IDLE"; 163 case P2P_SD_DURING_FIND: 164 return "SD_DURING_FIND"; 165 case P2P_PROVISIONING: 166 return "PROVISIONING"; 167 case P2P_PD_DURING_FIND: 168 return "PD_DURING_FIND"; 169 case P2P_INVITE: 170 return "INVITE"; 171 case P2P_INVITE_LISTEN: 172 return "INVITE_LISTEN"; 173 default: 174 return "?"; 175 } 176} 177 178 179const char * p2p_get_state_txt(struct p2p_data *p2p) 180{ 181 return p2p_state_txt(p2p->state); 182} 183 184 185u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 186{ 187 struct p2p_device *dev = NULL; 188 189 if (!addr || !p2p) 190 return 0; 191 192 dev = p2p_get_device(p2p, addr); 193 if (dev) 194 return dev->wps_prov_info; 195 else 196 return 0; 197} 198 199 200void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 201{ 202 struct p2p_device *dev = NULL; 203 204 if (!addr || !p2p) 205 return; 206 207 dev = p2p_get_device(p2p, addr); 208 if (dev) 209 dev->wps_prov_info = 0; 210} 211 212 213void p2p_set_state(struct p2p_data *p2p, int new_state) 214{ 215 p2p_dbg(p2p, "State %s -> %s", 216 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 217 p2p->state = new_state; 218} 219 220 221void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 222{ 223 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec", 224 p2p_state_txt(p2p->state), sec, usec); 225 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 226 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 227} 228 229 230void p2p_clear_timeout(struct p2p_data *p2p) 231{ 232 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state)); 233 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 234} 235 236 237void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, 238 int status) 239{ 240 struct p2p_go_neg_results res; 241 p2p_clear_timeout(p2p); 242 p2p_set_state(p2p, P2P_IDLE); 243 if (p2p->go_neg_peer) { 244 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 245 p2p->go_neg_peer->wps_method = WPS_NOT_READY; 246 } 247 p2p->go_neg_peer = NULL; 248 249 os_memset(&res, 0, sizeof(res)); 250 res.status = status; 251 if (peer) { 252 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 253 ETH_ALEN); 254 os_memcpy(res.peer_interface_addr, peer->intended_addr, 255 ETH_ALEN); 256 } 257 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 258} 259 260 261static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 262{ 263 unsigned int r, tu; 264 int freq; 265 struct wpabuf *ies; 266 267 p2p_dbg(p2p, "Starting short listen state (state=%s)", 268 p2p_state_txt(p2p->state)); 269 270 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 271 if (freq < 0) { 272 p2p_dbg(p2p, "Unknown regulatory class/channel"); 273 return; 274 } 275 276 os_get_random((u8 *) &r, sizeof(r)); 277 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 278 p2p->min_disc_int) * 100; 279 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 280 tu = p2p->max_disc_tu; 281 if (!dev_disc && tu < 100) 282 tu = 100; /* Need to wait in non-device discovery use cases */ 283 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 284 tu = p2p->cfg->max_listen * 1000 / 1024; 285 286 if (tu == 0) { 287 p2p_dbg(p2p, "Skip listen state since duration was 0 TU"); 288 p2p_set_timeout(p2p, 0, 0); 289 return; 290 } 291 292 p2p->pending_listen_freq = freq; 293 p2p->pending_listen_sec = 0; 294 p2p->pending_listen_usec = 1024 * tu; 295 296 ies = p2p_build_probe_resp_ies(p2p); 297 if (ies == NULL) 298 return; 299 300 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 301 ies) < 0) { 302 p2p_dbg(p2p, "Failed to start listen mode"); 303 p2p->pending_listen_freq = 0; 304 } 305 wpabuf_free(ies); 306} 307 308 309int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 310{ 311 int freq; 312 struct wpabuf *ies; 313 314 p2p_dbg(p2p, "Going to listen(only) state"); 315 316 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 317 if (freq < 0) { 318 p2p_dbg(p2p, "Unknown regulatory class/channel"); 319 return -1; 320 } 321 322 p2p->pending_listen_freq = freq; 323 p2p->pending_listen_sec = timeout / 1000; 324 p2p->pending_listen_usec = (timeout % 1000) * 1000; 325 326 if (p2p->p2p_scan_running) { 327 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 328 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen"); 329 return 0; 330 } 331 p2p_dbg(p2p, "p2p_scan running - delay start of listen state"); 332 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 333 return 0; 334 } 335 336 ies = p2p_build_probe_resp_ies(p2p); 337 if (ies == NULL) 338 return -1; 339 340 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 341 p2p_dbg(p2p, "Failed to start listen mode"); 342 p2p->pending_listen_freq = 0; 343 wpabuf_free(ies); 344 return -1; 345 } 346 wpabuf_free(ies); 347 348 p2p_set_state(p2p, P2P_LISTEN_ONLY); 349 350 return 0; 351} 352 353 354static void p2p_device_clear_reported(struct p2p_data *p2p) 355{ 356 struct p2p_device *dev; 357 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 358 dev->flags &= ~P2P_DEV_REPORTED; 359} 360 361 362/** 363 * p2p_get_device - Fetch a peer entry 364 * @p2p: P2P module context from p2p_init() 365 * @addr: P2P Device Address of the peer 366 * Returns: Pointer to the device entry or %NULL if not found 367 */ 368struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 369{ 370 struct p2p_device *dev; 371 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 372 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 373 return dev; 374 } 375 return NULL; 376} 377 378 379/** 380 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 381 * @p2p: P2P module context from p2p_init() 382 * @addr: P2P Interface Address of the peer 383 * Returns: Pointer to the device entry or %NULL if not found 384 */ 385struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 386 const u8 *addr) 387{ 388 struct p2p_device *dev; 389 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 390 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 391 return dev; 392 } 393 return NULL; 394} 395 396 397/** 398 * p2p_create_device - Create a peer entry 399 * @p2p: P2P module context from p2p_init() 400 * @addr: P2P Device Address of the peer 401 * Returns: Pointer to the device entry or %NULL on failure 402 * 403 * If there is already an entry for the peer, it will be returned instead of 404 * creating a new one. 405 */ 406static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 407 const u8 *addr) 408{ 409 struct p2p_device *dev, *oldest = NULL; 410 size_t count = 0; 411 412 dev = p2p_get_device(p2p, addr); 413 if (dev) 414 return dev; 415 416 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 417 count++; 418 if (oldest == NULL || 419 os_reltime_before(&dev->last_seen, &oldest->last_seen)) 420 oldest = dev; 421 } 422 if (count + 1 > p2p->cfg->max_peers && oldest) { 423 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer"); 424#ifdef ANDROID_P2P 425 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 426 if(&oldest->list == p2p->sd_dev_list) 427 p2p->sd_dev_list = oldest->list.next; 428#endif 429 dl_list_del(&oldest->list); 430 p2p_device_free(p2p, oldest); 431 } 432 433 dev = os_zalloc(sizeof(*dev)); 434 if (dev == NULL) 435 return NULL; 436 dl_list_add(&p2p->devices, &dev->list); 437 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 438 439 return dev; 440} 441 442 443static void p2p_copy_client_info(struct p2p_device *dev, 444 struct p2p_client_info *cli) 445{ 446 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 447 dev->info.device_name[cli->dev_name_len] = '\0'; 448 dev->info.dev_capab = cli->dev_capab; 449 dev->info.config_methods = cli->config_methods; 450 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 451 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 452 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 453 dev->info.wps_sec_dev_type_list_len); 454} 455 456 457static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 458 const u8 *go_interface_addr, int freq, 459 const u8 *gi, size_t gi_len) 460{ 461 struct p2p_group_info info; 462 size_t c; 463 struct p2p_device *dev; 464 465 if (gi == NULL) 466 return 0; 467 468 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 469 return -1; 470 471 /* 472 * Clear old data for this group; if the devices are still in the 473 * group, the information will be restored in the loop following this. 474 */ 475 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 476 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 477 ETH_ALEN) == 0) { 478 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 479 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 480 } 481 } 482 483 for (c = 0; c < info.num_clients; c++) { 484 struct p2p_client_info *cli = &info.client[c]; 485 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 486 ETH_ALEN) == 0) 487 continue; /* ignore our own entry */ 488 dev = p2p_get_device(p2p, cli->p2p_device_addr); 489 if (dev) { 490 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 491 P2P_DEV_PROBE_REQ_ONLY)) { 492 /* 493 * Update information since we have not 494 * received this directly from the client. 495 */ 496 p2p_copy_client_info(dev, cli); 497 } else { 498 /* 499 * Need to update P2P Client Discoverability 500 * flag since it is valid only in P2P Group 501 * Info attribute. 502 */ 503 dev->info.dev_capab &= 504 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 505 dev->info.dev_capab |= 506 cli->dev_capab & 507 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 508 } 509 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 510 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 511 } 512 } else { 513 dev = p2p_create_device(p2p, cli->p2p_device_addr); 514 if (dev == NULL) 515 continue; 516 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 517 p2p_copy_client_info(dev, cli); 518 dev->oper_freq = freq; 519 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 520 dev->info.p2p_device_addr, 521 &dev->info, 1); 522 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 523 } 524 525 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 526 ETH_ALEN); 527 os_get_reltime(&dev->last_seen); 528 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 529 os_memcpy(dev->member_in_go_iface, go_interface_addr, 530 ETH_ALEN); 531 } 532 533 return 0; 534} 535 536 537static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev, 538 int probe_req, const struct p2p_message *msg) 539{ 540 os_memcpy(dev->info.device_name, msg->device_name, 541 sizeof(dev->info.device_name)); 542 543 if (msg->manufacturer && 544 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 545 os_memset(dev->info.manufacturer, 0, 546 sizeof(dev->info.manufacturer)); 547 os_memcpy(dev->info.manufacturer, msg->manufacturer, 548 msg->manufacturer_len); 549 } 550 551 if (msg->model_name && 552 msg->model_name_len < sizeof(dev->info.model_name)) { 553 os_memset(dev->info.model_name, 0, 554 sizeof(dev->info.model_name)); 555 os_memcpy(dev->info.model_name, msg->model_name, 556 msg->model_name_len); 557 } 558 559 if (msg->model_number && 560 msg->model_number_len < sizeof(dev->info.model_number)) { 561 os_memset(dev->info.model_number, 0, 562 sizeof(dev->info.model_number)); 563 os_memcpy(dev->info.model_number, msg->model_number, 564 msg->model_number_len); 565 } 566 567 if (msg->serial_number && 568 msg->serial_number_len < sizeof(dev->info.serial_number)) { 569 os_memset(dev->info.serial_number, 0, 570 sizeof(dev->info.serial_number)); 571 os_memcpy(dev->info.serial_number, msg->serial_number, 572 msg->serial_number_len); 573 } 574 575 if (msg->pri_dev_type) 576 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 577 sizeof(dev->info.pri_dev_type)); 578 else if (msg->wps_pri_dev_type) 579 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 580 sizeof(dev->info.pri_dev_type)); 581 582 if (msg->wps_sec_dev_type_list) { 583 os_memcpy(dev->info.wps_sec_dev_type_list, 584 msg->wps_sec_dev_type_list, 585 msg->wps_sec_dev_type_list_len); 586 dev->info.wps_sec_dev_type_list_len = 587 msg->wps_sec_dev_type_list_len; 588 } 589 590 if (msg->capability) { 591 /* 592 * P2P Client Discoverability bit is reserved in all frames 593 * that use this function, so do not change its value here. 594 */ 595 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 596 dev->info.dev_capab |= msg->capability[0] & 597 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 598 dev->info.group_capab = msg->capability[1]; 599 } 600 601 if (msg->ext_listen_timing) { 602 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 603 dev->ext_listen_interval = 604 WPA_GET_LE16(msg->ext_listen_timing + 2); 605 } 606 607 if (!probe_req) { 608 u16 new_config_methods; 609 new_config_methods = msg->config_methods ? 610 msg->config_methods : msg->wps_config_methods; 611 if (new_config_methods && 612 dev->info.config_methods != new_config_methods) { 613 p2p_dbg(p2p, "Update peer " MACSTR 614 " config_methods 0x%x -> 0x%x", 615 MAC2STR(dev->info.p2p_device_addr), 616 dev->info.config_methods, 617 new_config_methods); 618 dev->info.config_methods = new_config_methods; 619 } 620 } 621} 622 623 624/** 625 * p2p_add_device - Add peer entries based on scan results or P2P frames 626 * @p2p: P2P module context from p2p_init() 627 * @addr: Source address of Beacon or Probe Response frame (may be either 628 * P2P Device Address or P2P Interface Address) 629 * @level: Signal level (signal strength of the received frame from the peer) 630 * @freq: Frequency on which the Beacon or Probe Response frame was received 631 * @rx_time: Time when the result was received 632 * @ies: IEs from the Beacon or Probe Response frame 633 * @ies_len: Length of ies buffer in octets 634 * @scan_res: Whether this was based on scan results 635 * Returns: 0 on success, -1 on failure 636 * 637 * If the scan result is for a GO, the clients in the group will also be added 638 * to the peer table. This function can also be used with some other frames 639 * like Provision Discovery Request that contains P2P Capability and P2P Device 640 * Info attributes. 641 */ 642int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 643 struct os_reltime *rx_time, int level, const u8 *ies, 644 size_t ies_len, int scan_res) 645{ 646 struct p2p_device *dev; 647 struct p2p_message msg; 648 const u8 *p2p_dev_addr; 649 int i; 650 struct os_reltime time_now; 651 652 os_memset(&msg, 0, sizeof(msg)); 653 if (p2p_parse_ies(ies, ies_len, &msg)) { 654 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry"); 655 p2p_parse_free(&msg); 656 return -1; 657 } 658 659 if (msg.p2p_device_addr) 660 p2p_dev_addr = msg.p2p_device_addr; 661 else if (msg.device_id) 662 p2p_dev_addr = msg.device_id; 663 else { 664 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 665 p2p_parse_free(&msg); 666 return -1; 667 } 668 669 if (!is_zero_ether_addr(p2p->peer_filter) && 670 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 671 p2p_dbg(p2p, "Do not add peer filter for " MACSTR 672 " due to peer filter", MAC2STR(p2p_dev_addr)); 673 p2p_parse_free(&msg); 674 return 0; 675 } 676 677 dev = p2p_create_device(p2p, p2p_dev_addr); 678 if (dev == NULL) { 679 p2p_parse_free(&msg); 680 return -1; 681 } 682 683 if (rx_time == NULL) { 684 os_get_reltime(&time_now); 685 rx_time = &time_now; 686 } 687 688 /* 689 * Update the device entry only if the new peer 690 * entry is newer than the one previously stored. 691 */ 692 if (dev->last_seen.sec > 0 && 693 os_reltime_before(rx_time, &dev->last_seen)) { 694 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)", 695 (unsigned int) rx_time->sec, 696 (unsigned int) rx_time->usec, 697 (unsigned int) dev->last_seen.sec, 698 (unsigned int) dev->last_seen.usec); 699 p2p_parse_free(&msg); 700 return -1; 701 } 702 703 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 704 705 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 706 707 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 708 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 709 if (msg.ssid && 710 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 711 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 712 != 0)) { 713 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 714 dev->oper_ssid_len = msg.ssid[1]; 715 } 716 717 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 718 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 719 int ds_freq; 720 if (*msg.ds_params == 14) 721 ds_freq = 2484; 722 else 723 ds_freq = 2407 + *msg.ds_params * 5; 724 if (freq != ds_freq) { 725 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz", 726 freq, ds_freq); 727 freq = ds_freq; 728 } 729 } 730 731 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 732 p2p_dbg(p2p, "Update Listen frequency based on scan results (" 733 MACSTR " %d -> %d MHz (DS param %d)", 734 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 735 freq, msg.ds_params ? *msg.ds_params : -1); 736 } 737 if (scan_res) { 738 dev->listen_freq = freq; 739 if (msg.group_info) 740 dev->oper_freq = freq; 741 } 742 dev->info.level = level; 743 744 p2p_copy_wps_info(p2p, dev, 0, &msg); 745 746 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 747 wpabuf_free(dev->info.wps_vendor_ext[i]); 748 dev->info.wps_vendor_ext[i] = NULL; 749 } 750 751 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 752 if (msg.wps_vendor_ext[i] == NULL) 753 break; 754 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 755 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 756 if (dev->info.wps_vendor_ext[i] == NULL) 757 break; 758 } 759 760 if (msg.wfd_subelems) { 761 wpabuf_free(dev->info.wfd_subelems); 762 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 763 } 764 765 if (scan_res) { 766 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 767 msg.group_info, msg.group_info_len); 768 } 769 770 p2p_parse_free(&msg); 771 772 if (p2p_pending_sd_req(p2p, dev)) 773 dev->flags |= P2P_DEV_SD_SCHEDULE; 774 775 if (dev->flags & P2P_DEV_REPORTED) 776 return 0; 777 778 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)", 779 freq, (unsigned int) rx_time->sec, 780 (unsigned int) rx_time->usec); 781 if (dev->flags & P2P_DEV_USER_REJECTED) { 782 p2p_dbg(p2p, "Do not report rejected device"); 783 return 0; 784 } 785 786 if (dev->info.config_methods == 0 && 787 (freq == 2412 || freq == 2437 || freq == 2462)) { 788 /* 789 * If we have only seen a Beacon frame from a GO, we do not yet 790 * know what WPS config methods it supports. Since some 791 * applications use config_methods value from P2P-DEVICE-FOUND 792 * events, postpone reporting this peer until we've fully 793 * discovered its capabilities. 794 * 795 * At least for now, do this only if the peer was detected on 796 * one of the social channels since that peer can be easily be 797 * found again and there are no limitations of having to use 798 * passive scan on this channels, so this can be done through 799 * Probe Response frame that includes the config_methods 800 * information. 801 */ 802 p2p_dbg(p2p, "Do not report peer " MACSTR 803 " with unknown config methods", MAC2STR(addr)); 804 return 0; 805 } 806 807 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 808 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 809 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 810 811 return 0; 812} 813 814 815static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 816{ 817 int i; 818 819 if (p2p->go_neg_peer == dev) { 820 /* 821 * If GO Negotiation is in progress, report that it has failed. 822 */ 823 p2p_go_neg_failed(p2p, dev, -1); 824 p2p->go_neg_peer = NULL; 825 } 826 if (p2p->invite_peer == dev) 827 p2p->invite_peer = NULL; 828 if (p2p->sd_peer == dev) 829 p2p->sd_peer = NULL; 830 if (p2p->pending_client_disc_go == dev) 831 p2p->pending_client_disc_go = NULL; 832 833 /* dev_lost() device, but only if it was previously dev_found() */ 834 if (dev->flags & P2P_DEV_REPORTED_ONCE) 835 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 836 dev->info.p2p_device_addr); 837 838 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 839 wpabuf_free(dev->info.wps_vendor_ext[i]); 840 dev->info.wps_vendor_ext[i] = NULL; 841 } 842 843 wpabuf_free(dev->info.wfd_subelems); 844 845 os_free(dev); 846} 847 848 849static int p2p_get_next_prog_freq(struct p2p_data *p2p) 850{ 851 struct p2p_channels *c; 852 struct p2p_reg_class *cla; 853 size_t cl, ch; 854 int found = 0; 855 u8 reg_class; 856 u8 channel; 857 int freq; 858 859 c = &p2p->cfg->channels; 860 for (cl = 0; cl < c->reg_classes; cl++) { 861 cla = &c->reg_class[cl]; 862 if (cla->reg_class != p2p->last_prog_scan_class) 863 continue; 864 for (ch = 0; ch < cla->channels; ch++) { 865 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 866 found = 1; 867 break; 868 } 869 } 870 if (found) 871 break; 872 } 873 874 if (!found) { 875 /* Start from beginning */ 876 reg_class = c->reg_class[0].reg_class; 877 channel = c->reg_class[0].channel[0]; 878 } else { 879 /* Pick the next channel */ 880 ch++; 881 if (ch == cla->channels) { 882 cl++; 883 if (cl == c->reg_classes) 884 cl = 0; 885 ch = 0; 886 } 887 reg_class = c->reg_class[cl].reg_class; 888 channel = c->reg_class[cl].channel[ch]; 889 } 890 891 freq = p2p_channel_to_freq(reg_class, channel); 892 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz", 893 reg_class, channel, freq); 894 p2p->last_prog_scan_class = reg_class; 895 p2p->last_prog_scan_chan = channel; 896 897 if (freq == 2412 || freq == 2437 || freq == 2462) 898 return 0; /* No need to add social channels */ 899 return freq; 900} 901 902 903static void p2p_search(struct p2p_data *p2p) 904{ 905 int freq = 0; 906 enum p2p_scan_type type; 907 u16 pw_id = DEV_PW_DEFAULT; 908 int res; 909 910 if (p2p->drv_in_listen) { 911 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing"); 912 return; 913 } 914 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 915 916 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 917 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 918 type = P2P_SCAN_SOCIAL_PLUS_ONE; 919 p2p_dbg(p2p, "Starting search (+ freq %u)", freq); 920 } else { 921 type = P2P_SCAN_SOCIAL; 922 p2p_dbg(p2p, "Starting search"); 923 } 924 925 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 926 p2p->num_req_dev_types, p2p->req_dev_types, 927 p2p->find_dev_id, pw_id); 928 if (res < 0) { 929 p2p_dbg(p2p, "Scan request failed"); 930 p2p_continue_find(p2p); 931 } else { 932 p2p_dbg(p2p, "Running p2p_scan"); 933 p2p->p2p_scan_running = 1; 934 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 935 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 936 p2p, NULL); 937 } 938} 939 940 941static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 942{ 943 struct p2p_data *p2p = eloop_ctx; 944 p2p_dbg(p2p, "Find timeout -> stop"); 945 p2p_stop_find(p2p); 946} 947 948 949static int p2p_run_after_scan(struct p2p_data *p2p) 950{ 951 struct p2p_device *dev; 952 enum p2p_after_scan op; 953 954 if (p2p->after_scan_tx) { 955 p2p->after_scan_tx_in_progress = 1; 956 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion"); 957 p2p->cfg->send_action(p2p->cfg->cb_ctx, 958 p2p->after_scan_tx->freq, 959 p2p->after_scan_tx->dst, 960 p2p->after_scan_tx->src, 961 p2p->after_scan_tx->bssid, 962 (u8 *) (p2p->after_scan_tx + 1), 963 p2p->after_scan_tx->len, 964 p2p->after_scan_tx->wait_time); 965 os_free(p2p->after_scan_tx); 966 p2p->after_scan_tx = NULL; 967#ifdef ANDROID_P2P 968 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 969 * At that moment, we will send the SD response from this context. After sending the SD response, 970 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 971 */ 972 return 0; 973#else 974 return 1; 975#endif 976 } 977 978 op = p2p->start_after_scan; 979 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 980 switch (op) { 981 case P2P_AFTER_SCAN_NOTHING: 982 break; 983 case P2P_AFTER_SCAN_LISTEN: 984 p2p_dbg(p2p, "Start previously requested Listen state"); 985 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 986 p2p->pending_listen_usec / 1000); 987 return 1; 988 case P2P_AFTER_SCAN_CONNECT: 989 p2p_dbg(p2p, "Start previously requested connect with " MACSTR, 990 MAC2STR(p2p->after_scan_peer)); 991 dev = p2p_get_device(p2p, p2p->after_scan_peer); 992 if (dev == NULL) { 993 p2p_dbg(p2p, "Peer not known anymore"); 994 break; 995 } 996 p2p_connect_send(p2p, dev); 997 return 1; 998 } 999 1000 return 0; 1001} 1002 1003 1004static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1005{ 1006 struct p2p_data *p2p = eloop_ctx; 1007 int running; 1008 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running); 1009 running = p2p->p2p_scan_running; 1010 /* Make sure we recover from missed scan results callback */ 1011 p2p->p2p_scan_running = 0; 1012 1013 if (running) 1014 p2p_run_after_scan(p2p); 1015} 1016 1017 1018static void p2p_free_req_dev_types(struct p2p_data *p2p) 1019{ 1020 p2p->num_req_dev_types = 0; 1021 os_free(p2p->req_dev_types); 1022 p2p->req_dev_types = NULL; 1023} 1024 1025 1026int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1027 enum p2p_discovery_type type, 1028 unsigned int num_req_dev_types, const u8 *req_dev_types, 1029 const u8 *dev_id, unsigned int search_delay) 1030{ 1031 int res; 1032 1033 p2p_dbg(p2p, "Starting find (type=%d)", type); 1034 os_get_reltime(&p2p->find_start); 1035 if (p2p->p2p_scan_running) { 1036 p2p_dbg(p2p, "p2p_scan is already running"); 1037 } 1038 1039 p2p_free_req_dev_types(p2p); 1040 if (req_dev_types && num_req_dev_types) { 1041 p2p->req_dev_types = os_malloc(num_req_dev_types * 1042 WPS_DEV_TYPE_LEN); 1043 if (p2p->req_dev_types == NULL) 1044 return -1; 1045 os_memcpy(p2p->req_dev_types, req_dev_types, 1046 num_req_dev_types * WPS_DEV_TYPE_LEN); 1047 p2p->num_req_dev_types = num_req_dev_types; 1048 } 1049 1050 if (dev_id) { 1051 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1052 p2p->find_dev_id = p2p->find_dev_id_buf; 1053 } else 1054 p2p->find_dev_id = NULL; 1055 1056 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1057 p2p_clear_timeout(p2p); 1058 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1059 p2p->find_type = type; 1060 p2p_device_clear_reported(p2p); 1061 p2p_set_state(p2p, P2P_SEARCH); 1062 p2p->search_delay = search_delay; 1063 p2p->in_search_delay = 0; 1064 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1065 p2p->last_p2p_find_timeout = timeout; 1066 if (timeout) 1067 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1068 p2p, NULL); 1069 switch (type) { 1070 case P2P_FIND_START_WITH_FULL: 1071 case P2P_FIND_PROGRESSIVE: 1072 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1073 p2p->num_req_dev_types, 1074 p2p->req_dev_types, dev_id, 1075 DEV_PW_DEFAULT); 1076 break; 1077 case P2P_FIND_ONLY_SOCIAL: 1078 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1079 p2p->num_req_dev_types, 1080 p2p->req_dev_types, dev_id, 1081 DEV_PW_DEFAULT); 1082 break; 1083 default: 1084 return -1; 1085 } 1086 1087 if (res == 0) { 1088 p2p_dbg(p2p, "Running p2p_scan"); 1089 p2p->p2p_scan_running = 1; 1090 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1091 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1092 p2p, NULL); 1093 } else if (p2p->p2p_scan_running) { 1094 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running"); 1095 /* wait for the previous p2p_scan to complete */ 1096 } else { 1097 p2p_dbg(p2p, "Failed to start p2p_scan"); 1098 p2p_set_state(p2p, P2P_IDLE); 1099 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1100 } 1101 1102 return res; 1103} 1104 1105 1106void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1107{ 1108 p2p_dbg(p2p, "Stopping find"); 1109 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1110 p2p_clear_timeout(p2p); 1111 if (p2p->state == P2P_SEARCH) 1112 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1113 p2p_set_state(p2p, P2P_IDLE); 1114 p2p_free_req_dev_types(p2p); 1115 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1116 if (p2p->go_neg_peer) 1117 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1118 p2p->go_neg_peer = NULL; 1119 p2p->sd_peer = NULL; 1120 p2p->invite_peer = NULL; 1121 p2p_stop_listen_for_freq(p2p, freq); 1122} 1123 1124 1125void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1126{ 1127 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1128 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1129 return; 1130 } 1131 if (p2p->in_listen) { 1132 p2p->in_listen = 0; 1133 p2p_clear_timeout(p2p); 1134 } 1135 if (p2p->drv_in_listen) { 1136 /* 1137 * The driver may not deliver callback to p2p_listen_end() 1138 * when the operation gets canceled, so clear the internal 1139 * variable that is tracking driver state. 1140 */ 1141 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1142 p2p->drv_in_listen = 0; 1143 } 1144 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1145} 1146 1147 1148void p2p_stop_listen(struct p2p_data *p2p) 1149{ 1150 if (p2p->state != P2P_LISTEN_ONLY) { 1151 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1152 return; 1153 } 1154 1155 p2p_stop_listen_for_freq(p2p, 0); 1156 p2p_set_state(p2p, P2P_IDLE); 1157} 1158 1159 1160void p2p_stop_find(struct p2p_data *p2p) 1161{ 1162 p2p_stop_find_for_freq(p2p, 0); 1163} 1164 1165 1166static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1167 unsigned int force_freq, 1168 unsigned int pref_freq, int go) 1169{ 1170 u8 op_class, op_channel; 1171 unsigned int freq = force_freq ? force_freq : pref_freq; 1172 1173 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d", 1174 force_freq, pref_freq, go); 1175 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1176 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1177 return -1; 1178 } 1179 1180 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) && 1181 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class, 1182 op_channel))) { 1183 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1184 freq, op_class, op_channel); 1185 return -1; 1186 } 1187 1188 p2p->op_reg_class = op_class; 1189 p2p->op_channel = op_channel; 1190 1191 if (force_freq) { 1192 p2p->channels.reg_classes = 1; 1193 p2p->channels.reg_class[0].channels = 1; 1194 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1195 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1196 } else { 1197 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1198 sizeof(struct p2p_channels)); 1199 } 1200 1201 return 0; 1202} 1203 1204 1205static void p2p_prepare_channel_best(struct p2p_data *p2p) 1206{ 1207 u8 op_class, op_channel; 1208 const int op_classes_5ghz[] = { 124, 115, 0 }; 1209 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 1210 const int op_classes_vht[] = { 128, 0 }; 1211 1212 p2p_dbg(p2p, "Prepare channel best"); 1213 1214 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1215 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1216 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1217 == 0) { 1218 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1219 p2p->op_reg_class = op_class; 1220 p2p->op_channel = op_channel; 1221 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1222 p2p_supported_freq(p2p, p2p->best_freq_5) && 1223 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1224 == 0) { 1225 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1226 p2p->op_reg_class = op_class; 1227 p2p->op_channel = op_channel; 1228 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1229 p2p_supported_freq(p2p, p2p->best_freq_24) && 1230 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1231 &op_channel) == 0) { 1232 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1233 p2p->op_reg_class = op_class; 1234 p2p->op_channel = op_channel; 1235 } else if (p2p->cfg->num_pref_chan > 0 && 1236 p2p_channels_includes(&p2p->cfg->channels, 1237 p2p->cfg->pref_chan[0].op_class, 1238 p2p->cfg->pref_chan[0].chan)) { 1239 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1240 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1241 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1242 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht, 1243 &p2p->op_reg_class, &p2p->op_channel) == 1244 0) { 1245 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference", 1246 p2p->op_reg_class, p2p->op_channel); 1247 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40, 1248 &p2p->op_reg_class, &p2p->op_channel) == 1249 0) { 1250 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference", 1251 p2p->op_reg_class, p2p->op_channel); 1252 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz, 1253 &p2p->op_reg_class, &p2p->op_channel) == 1254 0) { 1255 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference", 1256 p2p->op_reg_class, p2p->op_channel); 1257 } else { 1258 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1259 p2p->op_reg_class = p2p->cfg->op_reg_class; 1260 p2p->op_channel = p2p->cfg->op_channel; 1261 } 1262 1263 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1264 sizeof(struct p2p_channels)); 1265} 1266 1267 1268/** 1269 * p2p_prepare_channel - Select operating channel for GO Negotiation 1270 * @p2p: P2P module context from p2p_init() 1271 * @dev: Selected peer device 1272 * @force_freq: Forced frequency in MHz or 0 if not forced 1273 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1274 * @go: Whether the local end will be forced to be GO 1275 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1276 * 1277 * This function is used to do initial operating channel selection for GO 1278 * Negotiation prior to having received peer information. The selected channel 1279 * may be further optimized in p2p_reselect_channel() once the peer information 1280 * is available. 1281 */ 1282int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1283 unsigned int force_freq, unsigned int pref_freq, int go) 1284{ 1285 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d", 1286 force_freq, pref_freq, go); 1287 if (force_freq || pref_freq) { 1288 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) < 1289 0) 1290 return -1; 1291 } else { 1292 p2p_prepare_channel_best(p2p); 1293 } 1294 p2p_channels_dump(p2p, "prepared channels", &p2p->channels); 1295 if (go) 1296 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq); 1297 else if (!force_freq) 1298 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels, 1299 &p2p->channels); 1300 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels); 1301 1302 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1303 p2p->op_reg_class, p2p->op_channel, 1304 force_freq ? " (forced)" : ""); 1305 1306 if (force_freq) 1307 dev->flags |= P2P_DEV_FORCE_FREQ; 1308 else 1309 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1310 1311 return 0; 1312} 1313 1314 1315static void p2p_set_dev_persistent(struct p2p_device *dev, 1316 int persistent_group) 1317{ 1318 switch (persistent_group) { 1319 case 0: 1320 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1321 P2P_DEV_PREFER_PERSISTENT_RECONN); 1322 break; 1323 case 1: 1324 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1325 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1326 break; 1327 case 2: 1328 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1329 P2P_DEV_PREFER_PERSISTENT_RECONN; 1330 break; 1331 } 1332} 1333 1334 1335int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1336 enum p2p_wps_method wps_method, 1337 int go_intent, const u8 *own_interface_addr, 1338 unsigned int force_freq, int persistent_group, 1339 const u8 *force_ssid, size_t force_ssid_len, 1340 int pd_before_go_neg, unsigned int pref_freq) 1341{ 1342 struct p2p_device *dev; 1343 1344 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1345 " GO Intent=%d Intended Interface Address=" MACSTR 1346 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1347 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1348 wps_method, persistent_group, pd_before_go_neg); 1349 1350 dev = p2p_get_device(p2p, peer_addr); 1351 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1352 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1353 MAC2STR(peer_addr)); 1354 return -1; 1355 } 1356 1357 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 1358 go_intent == 15) < 0) 1359 return -1; 1360 1361 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1362 if (!(dev->info.dev_capab & 1363 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1364 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1365 " that is in a group and is not discoverable", 1366 MAC2STR(peer_addr)); 1367 return -1; 1368 } 1369 if (dev->oper_freq <= 0) { 1370 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1371 " with incomplete information", 1372 MAC2STR(peer_addr)); 1373 return -1; 1374 } 1375 1376 /* 1377 * First, try to connect directly. If the peer does not 1378 * acknowledge frames, assume it is sleeping and use device 1379 * discoverability via the GO at that point. 1380 */ 1381 } 1382 1383 p2p->ssid_set = 0; 1384 if (force_ssid) { 1385 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1386 force_ssid, force_ssid_len); 1387 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1388 p2p->ssid_len = force_ssid_len; 1389 p2p->ssid_set = 1; 1390 } 1391 1392 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1393 dev->flags &= ~P2P_DEV_USER_REJECTED; 1394 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1395 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1396 if (pd_before_go_neg) 1397 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1398 else { 1399 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1400 /* 1401 * Assign dialog token and tie breaker here to use the same 1402 * values in each retry within the same GO Negotiation exchange. 1403 */ 1404 dev->dialog_token++; 1405 if (dev->dialog_token == 0) 1406 dev->dialog_token = 1; 1407 dev->tie_breaker = p2p->next_tie_breaker; 1408 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1409 } 1410 dev->connect_reqs = 0; 1411 dev->go_neg_req_sent = 0; 1412 dev->go_state = UNKNOWN_GO; 1413 p2p_set_dev_persistent(dev, persistent_group); 1414 p2p->go_intent = go_intent; 1415 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1416 1417 if (p2p->state != P2P_IDLE) 1418 p2p_stop_find(p2p); 1419 1420 if (p2p->after_scan_tx) { 1421 /* 1422 * We need to drop the pending frame to avoid issues with the 1423 * new GO Negotiation, e.g., when the pending frame was from a 1424 * previous attempt at starting a GO Negotiation. 1425 */ 1426 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion"); 1427 os_free(p2p->after_scan_tx); 1428 p2p->after_scan_tx = NULL; 1429 } 1430 1431 dev->wps_method = wps_method; 1432 dev->status = P2P_SC_SUCCESS; 1433 1434 if (p2p->p2p_scan_running) { 1435 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1436 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1437 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1438 return 0; 1439 } 1440 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1441 1442 return p2p_connect_send(p2p, dev); 1443} 1444 1445 1446int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1447 enum p2p_wps_method wps_method, 1448 int go_intent, const u8 *own_interface_addr, 1449 unsigned int force_freq, int persistent_group, 1450 const u8 *force_ssid, size_t force_ssid_len, 1451 unsigned int pref_freq) 1452{ 1453 struct p2p_device *dev; 1454 1455 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1456 " GO Intent=%d Intended Interface Address=" MACSTR 1457 " wps_method=%d persistent_group=%d", 1458 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1459 wps_method, persistent_group); 1460 1461 dev = p2p_get_device(p2p, peer_addr); 1462 if (dev == NULL) { 1463 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1464 MAC2STR(peer_addr)); 1465 return -1; 1466 } 1467 1468 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent == 1469 15) < 0) 1470 return -1; 1471 1472 p2p->ssid_set = 0; 1473 if (force_ssid) { 1474 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1475 force_ssid, force_ssid_len); 1476 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1477 p2p->ssid_len = force_ssid_len; 1478 p2p->ssid_set = 1; 1479 } 1480 1481 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1482 dev->flags &= ~P2P_DEV_USER_REJECTED; 1483 dev->go_neg_req_sent = 0; 1484 dev->go_state = UNKNOWN_GO; 1485 p2p_set_dev_persistent(dev, persistent_group); 1486 p2p->go_intent = go_intent; 1487 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1488 1489 dev->wps_method = wps_method; 1490 dev->status = P2P_SC_SUCCESS; 1491 1492 return 0; 1493} 1494 1495 1496void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1497 struct p2p_device *dev, struct p2p_message *msg) 1498{ 1499 os_get_reltime(&dev->last_seen); 1500 1501 p2p_copy_wps_info(p2p, dev, 0, msg); 1502 1503 if (msg->listen_channel) { 1504 int freq; 1505 freq = p2p_channel_to_freq(msg->listen_channel[3], 1506 msg->listen_channel[4]); 1507 if (freq < 0) { 1508 p2p_dbg(p2p, "Unknown peer Listen channel: " 1509 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1510 msg->listen_channel[0], 1511 msg->listen_channel[1], 1512 msg->listen_channel[2], 1513 msg->listen_channel[3], 1514 msg->listen_channel[4]); 1515 } else { 1516 p2p_dbg(p2p, "Update peer " MACSTR 1517 " Listen channel: %u -> %u MHz", 1518 MAC2STR(dev->info.p2p_device_addr), 1519 dev->listen_freq, freq); 1520 dev->listen_freq = freq; 1521 } 1522 } 1523 1524 if (msg->wfd_subelems) { 1525 wpabuf_free(dev->info.wfd_subelems); 1526 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1527 } 1528 1529 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1530 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1531 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1532 } else { 1533 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1534 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1535 "listen_freq=%d", 1536 MAC2STR(dev->info.p2p_device_addr), 1537 dev->info.dev_capab, dev->info.group_capab, 1538 dev->info.device_name, dev->listen_freq); 1539 } 1540 1541 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1542 1543 if (dev->flags & P2P_DEV_USER_REJECTED) { 1544 p2p_dbg(p2p, "Do not report rejected device"); 1545 return; 1546 } 1547 1548 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1549 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1550 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1551} 1552 1553 1554void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1555{ 1556 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1557 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1558 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1559 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1560 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1561} 1562 1563 1564int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1565{ 1566 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1567 p2p_random(params->passphrase, 8); 1568 return 0; 1569} 1570 1571 1572void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1573{ 1574 struct p2p_go_neg_results res; 1575 int go = peer->go_state == LOCAL_GO; 1576 struct p2p_channels intersection; 1577 int freqs; 1578 size_t i, j; 1579 1580 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1581 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1582 1583 os_memset(&res, 0, sizeof(res)); 1584 res.role_go = go; 1585 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1586 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1587 res.wps_method = peer->wps_method; 1588 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1589 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1590 res.persistent_group = 2; 1591 else 1592 res.persistent_group = 1; 1593 } 1594 1595 if (go) { 1596 /* Setup AP mode for WPS provisioning */ 1597 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1598 p2p->op_channel); 1599 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1600 res.ssid_len = p2p->ssid_len; 1601 p2p_random(res.passphrase, 8); 1602 } else { 1603 res.freq = peer->oper_freq; 1604 if (p2p->ssid_len) { 1605 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1606 res.ssid_len = p2p->ssid_len; 1607 } 1608 } 1609 1610 p2p_channels_dump(p2p, "own channels", &p2p->channels); 1611 p2p_channels_dump(p2p, "peer channels", &peer->channels); 1612 p2p_channels_intersect(&p2p->channels, &peer->channels, 1613 &intersection); 1614 if (go) { 1615 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq); 1616 p2p_channels_dump(p2p, "intersection after no-GO removal", 1617 &intersection); 1618 } 1619 freqs = 0; 1620 for (i = 0; i < intersection.reg_classes; i++) { 1621 struct p2p_reg_class *c = &intersection.reg_class[i]; 1622 if (freqs + 1 == P2P_MAX_CHANNELS) 1623 break; 1624 for (j = 0; j < c->channels; j++) { 1625 int freq; 1626 if (freqs + 1 == P2P_MAX_CHANNELS) 1627 break; 1628 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]); 1629 if (freq < 0) 1630 continue; 1631 res.freq_list[freqs++] = freq; 1632 } 1633 } 1634 1635 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1636 1637 p2p_clear_timeout(p2p); 1638 p2p->ssid_set = 0; 1639 peer->go_neg_req_sent = 0; 1640 peer->wps_method = WPS_NOT_READY; 1641 1642 p2p_set_state(p2p, P2P_PROVISIONING); 1643 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1644} 1645 1646 1647static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1648 const u8 *data, size_t len, int rx_freq) 1649{ 1650 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1651 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1652 1653 if (len < 1) 1654 return; 1655 1656 switch (data[0]) { 1657 case P2P_GO_NEG_REQ: 1658 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1659 break; 1660 case P2P_GO_NEG_RESP: 1661 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1662 break; 1663 case P2P_GO_NEG_CONF: 1664 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1665 break; 1666 case P2P_INVITATION_REQ: 1667 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1668 rx_freq); 1669 break; 1670 case P2P_INVITATION_RESP: 1671 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1672 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1673 break; 1674 case P2P_PROV_DISC_REQ: 1675 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1676 break; 1677 case P2P_PROV_DISC_RESP: 1678 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1679 break; 1680 case P2P_DEV_DISC_REQ: 1681 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1682 break; 1683 case P2P_DEV_DISC_RESP: 1684 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1685 break; 1686 default: 1687 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1688 data[0]); 1689 break; 1690 } 1691} 1692 1693 1694static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1695 const u8 *sa, const u8 *bssid, const u8 *data, 1696 size_t len, int freq) 1697{ 1698 if (len < 1) 1699 return; 1700 1701 switch (data[0]) { 1702 case WLAN_PA_VENDOR_SPECIFIC: 1703 data++; 1704 len--; 1705 if (len < 3) 1706 return; 1707 if (WPA_GET_BE24(data) != OUI_WFA) 1708 return; 1709 1710 data += 3; 1711 len -= 3; 1712 if (len < 1) 1713 return; 1714 1715 if (*data != P2P_OUI_TYPE) 1716 return; 1717 1718 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1719 break; 1720 case WLAN_PA_GAS_INITIAL_REQ: 1721 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1722 break; 1723 case WLAN_PA_GAS_INITIAL_RESP: 1724 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1725 break; 1726 case WLAN_PA_GAS_COMEBACK_REQ: 1727 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1728 break; 1729 case WLAN_PA_GAS_COMEBACK_RESP: 1730 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1731 break; 1732 } 1733} 1734 1735 1736void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1737 const u8 *bssid, u8 category, 1738 const u8 *data, size_t len, int freq) 1739{ 1740 if (category == WLAN_ACTION_PUBLIC) { 1741 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1742 return; 1743 } 1744 1745 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1746 return; 1747 1748 if (len < 4) 1749 return; 1750 1751 if (WPA_GET_BE24(data) != OUI_WFA) 1752 return; 1753 data += 3; 1754 len -= 3; 1755 1756 if (*data != P2P_OUI_TYPE) 1757 return; 1758 data++; 1759 len--; 1760 1761 /* P2P action frame */ 1762 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1763 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1764 1765 if (len < 1) 1766 return; 1767 switch (data[0]) { 1768 case P2P_NOA: 1769 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1770 /* TODO */ 1771 break; 1772 case P2P_PRESENCE_REQ: 1773 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1774 break; 1775 case P2P_PRESENCE_RESP: 1776 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1777 break; 1778 case P2P_GO_DISC_REQ: 1779 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1780 break; 1781 default: 1782 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 1783 break; 1784 } 1785} 1786 1787 1788static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1789{ 1790 struct p2p_data *p2p = eloop_ctx; 1791 if (p2p->go_neg_peer == NULL) 1792 return; 1793 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1794 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1795 p2p_connect_send(p2p, p2p->go_neg_peer); 1796} 1797 1798 1799static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1800{ 1801 struct p2p_data *p2p = eloop_ctx; 1802 if (p2p->invite_peer == NULL) 1803 return; 1804 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1805 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1806} 1807 1808 1809static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1810 const u8 *ie, size_t ie_len) 1811{ 1812 struct p2p_message msg; 1813 struct p2p_device *dev; 1814 1815 os_memset(&msg, 0, sizeof(msg)); 1816 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1817 { 1818 p2p_parse_free(&msg); 1819 return; /* not a P2P probe */ 1820 } 1821 1822 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1823 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1824 != 0) { 1825 /* The Probe Request is not part of P2P Device Discovery. It is 1826 * not known whether the source address of the frame is the P2P 1827 * Device Address or P2P Interface Address. Do not add a new 1828 * peer entry based on this frames. 1829 */ 1830 p2p_parse_free(&msg); 1831 return; 1832 } 1833 1834 dev = p2p_get_device(p2p, addr); 1835 if (dev) { 1836 if (dev->country[0] == 0 && msg.listen_channel) 1837 os_memcpy(dev->country, msg.listen_channel, 3); 1838 os_get_reltime(&dev->last_seen); 1839 p2p_parse_free(&msg); 1840 return; /* already known */ 1841 } 1842 1843 dev = p2p_create_device(p2p, addr); 1844 if (dev == NULL) { 1845 p2p_parse_free(&msg); 1846 return; 1847 } 1848 1849 os_get_reltime(&dev->last_seen); 1850 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1851 1852 if (msg.listen_channel) { 1853 os_memcpy(dev->country, msg.listen_channel, 3); 1854 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 1855 msg.listen_channel[4]); 1856 } 1857 1858 p2p_copy_wps_info(p2p, dev, 1, &msg); 1859 1860 if (msg.wfd_subelems) { 1861 wpabuf_free(dev->info.wfd_subelems); 1862 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1863 } 1864 1865 p2p_parse_free(&msg); 1866 1867 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 1868 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1869 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1870 dev->info.group_capab, dev->info.device_name, 1871 dev->listen_freq); 1872} 1873 1874 1875struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1876 const u8 *addr, 1877 struct p2p_message *msg) 1878{ 1879 struct p2p_device *dev; 1880 1881 dev = p2p_get_device(p2p, addr); 1882 if (dev) { 1883 os_get_reltime(&dev->last_seen); 1884 return dev; /* already known */ 1885 } 1886 1887 dev = p2p_create_device(p2p, addr); 1888 if (dev == NULL) 1889 return NULL; 1890 1891 p2p_add_dev_info(p2p, addr, dev, msg); 1892 1893 return dev; 1894} 1895 1896 1897static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1898{ 1899 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1900 return 1; 1901 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1902 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1903 WPA_GET_BE16(&req_dev_type[6]) == 0) 1904 return 1; /* Category match with wildcard OUI/sub-category */ 1905 return 0; 1906} 1907 1908 1909int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1910 size_t num_req_dev_type) 1911{ 1912 size_t i; 1913 for (i = 0; i < num_req_dev_type; i++) { 1914 if (dev_type_match(dev_type, req_dev_type[i])) 1915 return 1; 1916 } 1917 return 0; 1918} 1919 1920 1921/** 1922 * p2p_match_dev_type - Match local device type with requested type 1923 * @p2p: P2P module context from p2p_init() 1924 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1925 * Returns: 1 on match, 0 on mismatch 1926 * 1927 * This function can be used to match the Requested Device Type attribute in 1928 * WPS IE with the local device types for deciding whether to reply to a Probe 1929 * Request frame. 1930 */ 1931int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1932{ 1933 struct wps_parse_attr attr; 1934 size_t i; 1935 1936 if (wps_parse_msg(wps, &attr)) 1937 return 1; /* assume no Requested Device Type attributes */ 1938 1939 if (attr.num_req_dev_type == 0) 1940 return 1; /* no Requested Device Type attributes -> match */ 1941 1942 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1943 attr.num_req_dev_type)) 1944 return 1; /* Own Primary Device Type matches */ 1945 1946 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1947 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1948 attr.req_dev_type, 1949 attr.num_req_dev_type)) 1950 return 1; /* Own Secondary Device Type matches */ 1951 1952 /* No matching device type found */ 1953 return 0; 1954} 1955 1956 1957struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1958{ 1959 struct wpabuf *buf; 1960 u8 *len; 1961 int pw_id = -1; 1962 size_t extra = 0; 1963 1964#ifdef CONFIG_WIFI_DISPLAY 1965 if (p2p->wfd_ie_probe_resp) 1966 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1967#endif /* CONFIG_WIFI_DISPLAY */ 1968 1969 buf = wpabuf_alloc(1000 + extra); 1970 if (buf == NULL) 1971 return NULL; 1972 1973 if (p2p->go_neg_peer) { 1974 /* Advertise immediate availability of WPS credential */ 1975 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1976 } 1977 1978 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) { 1979 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response"); 1980 wpabuf_free(buf); 1981 return NULL; 1982 } 1983 1984#ifdef CONFIG_WIFI_DISPLAY 1985 if (p2p->wfd_ie_probe_resp) 1986 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1987#endif /* CONFIG_WIFI_DISPLAY */ 1988 1989 /* P2P IE */ 1990 len = p2p_buf_add_ie_hdr(buf); 1991 p2p_buf_add_capability(buf, p2p->dev_capab & 1992 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1993 if (p2p->ext_listen_interval) 1994 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1995 p2p->ext_listen_interval); 1996 p2p_buf_add_device_info(buf, p2p, NULL); 1997 p2p_buf_update_ie_hdr(buf, len); 1998 1999 return buf; 2000} 2001 2002 2003static enum p2p_probe_req_status 2004p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2005 const u8 *bssid, const u8 *ie, size_t ie_len) 2006{ 2007 struct ieee802_11_elems elems; 2008 struct wpabuf *buf; 2009 struct ieee80211_mgmt *resp; 2010 struct p2p_message msg; 2011 struct wpabuf *ies; 2012 2013 if (!p2p->in_listen || !p2p->drv_in_listen) { 2014 /* not in Listen state - ignore Probe Request */ 2015 return P2P_PREQ_NOT_LISTEN; 2016 } 2017 2018 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2019 ParseFailed) { 2020 /* Ignore invalid Probe Request frames */ 2021 return P2P_PREQ_MALFORMED; 2022 } 2023 2024 if (elems.p2p == NULL) { 2025 /* not a P2P probe - ignore it */ 2026 return P2P_PREQ_NOT_P2P; 2027 } 2028 2029 if (dst && !is_broadcast_ether_addr(dst) && 2030 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2031 /* Not sent to the broadcast address or our P2P Device Address 2032 */ 2033 return P2P_PREQ_NOT_PROCESSED; 2034 } 2035 2036 if (bssid && !is_broadcast_ether_addr(bssid)) { 2037 /* Not sent to the Wildcard BSSID */ 2038 return P2P_PREQ_NOT_PROCESSED; 2039 } 2040 2041 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2042 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2043 0) { 2044 /* not using P2P Wildcard SSID - ignore */ 2045 return P2P_PREQ_NOT_PROCESSED; 2046 } 2047 2048 if (supp_rates_11b_only(&elems)) { 2049 /* Indicates support for 11b rates only */ 2050 return P2P_PREQ_NOT_P2P; 2051 } 2052 2053 os_memset(&msg, 0, sizeof(msg)); 2054 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2055 /* Could not parse P2P attributes */ 2056 return P2P_PREQ_NOT_P2P; 2057 } 2058 2059 if (msg.device_id && 2060 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2061 /* Device ID did not match */ 2062 p2p_parse_free(&msg); 2063 return P2P_PREQ_NOT_PROCESSED; 2064 } 2065 2066 /* Check Requested Device Type match */ 2067 if (msg.wps_attributes && 2068 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2069 /* No match with Requested Device Type */ 2070 p2p_parse_free(&msg); 2071 return P2P_PREQ_NOT_PROCESSED; 2072 } 2073 p2p_parse_free(&msg); 2074 2075 if (!p2p->cfg->send_probe_resp) { 2076 /* Response generated elsewhere */ 2077 return P2P_PREQ_NOT_PROCESSED; 2078 } 2079 2080 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2081 2082 /* 2083 * We do not really have a specific BSS that this frame is advertising, 2084 * so build a frame that has some information in valid format. This is 2085 * really only used for discovery purposes, not to learn exact BSS 2086 * parameters. 2087 */ 2088 ies = p2p_build_probe_resp_ies(p2p); 2089 if (ies == NULL) 2090 return P2P_PREQ_NOT_PROCESSED; 2091 2092 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2093 if (buf == NULL) { 2094 wpabuf_free(ies); 2095 return P2P_PREQ_NOT_PROCESSED; 2096 } 2097 2098 resp = NULL; 2099 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2100 2101 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2102 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2103 os_memcpy(resp->da, addr, ETH_ALEN); 2104 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2105 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2106 resp->u.probe_resp.beacon_int = host_to_le16(100); 2107 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2108 resp->u.probe_resp.capab_info = 2109 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2110 WLAN_CAPABILITY_PRIVACY | 2111 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2112 2113 wpabuf_put_u8(buf, WLAN_EID_SSID); 2114 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2115 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2116 2117 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2118 wpabuf_put_u8(buf, 8); 2119 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2120 wpabuf_put_u8(buf, 90 / 5); 2121 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2122 wpabuf_put_u8(buf, 180 / 5); 2123 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2124 wpabuf_put_u8(buf, 360 / 5); 2125 wpabuf_put_u8(buf, 480 / 5); 2126 wpabuf_put_u8(buf, 540 / 5); 2127 2128 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2129 wpabuf_put_u8(buf, 1); 2130 wpabuf_put_u8(buf, p2p->cfg->channel); 2131 2132 wpabuf_put_buf(buf, ies); 2133 wpabuf_free(ies); 2134 2135 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2136 2137 wpabuf_free(buf); 2138 2139 return P2P_PREQ_NOT_PROCESSED; 2140} 2141 2142 2143enum p2p_probe_req_status 2144p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2145 const u8 *bssid, const u8 *ie, size_t ie_len) 2146{ 2147 enum p2p_probe_req_status res; 2148 2149 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2150 2151 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2152 2153 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2154 p2p->go_neg_peer && 2155 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2156 == 0 && 2157 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2158 /* Received a Probe Request from GO Negotiation peer */ 2159 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2160 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2161 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2162 return P2P_PREQ_PROCESSED; 2163 } 2164 2165 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2166 p2p->invite_peer && 2167 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2168 == 0) { 2169 /* Received a Probe Request from Invite peer */ 2170 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2171 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2172 return P2P_PREQ_PROCESSED; 2173 } 2174 2175 return res; 2176} 2177 2178 2179static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2180 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2181{ 2182 struct wpabuf *tmp; 2183 u8 *lpos; 2184 size_t tmplen; 2185 int res; 2186 u8 group_capab; 2187 2188 if (p2p_ie == NULL) 2189 return 0; /* WLAN AP is not a P2P manager */ 2190 2191 /* 2192 * (Re)Association Request - P2P IE 2193 * P2P Capability attribute (shall be present) 2194 * P2P Interface attribute (present if concurrent device and 2195 * P2P Management is enabled) 2196 */ 2197 tmp = wpabuf_alloc(200); 2198 if (tmp == NULL) 2199 return -1; 2200 2201 lpos = p2p_buf_add_ie_hdr(tmp); 2202 group_capab = 0; 2203 if (p2p->num_groups > 0) { 2204 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2205 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2206 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2207 p2p->cross_connect) 2208 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2209 } 2210 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2211 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2212 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2213 p2p_buf_add_p2p_interface(tmp, p2p); 2214 p2p_buf_update_ie_hdr(tmp, lpos); 2215 2216 tmplen = wpabuf_len(tmp); 2217 if (tmplen > len) 2218 res = -1; 2219 else { 2220 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2221 res = tmplen; 2222 } 2223 wpabuf_free(tmp); 2224 2225 return res; 2226} 2227 2228 2229int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2230 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2231{ 2232 struct wpabuf *tmp; 2233 u8 *lpos; 2234 struct p2p_device *peer; 2235 size_t tmplen; 2236 int res; 2237 size_t extra = 0; 2238 2239 if (!p2p_group) 2240 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2241 2242#ifdef CONFIG_WIFI_DISPLAY 2243 if (p2p->wfd_ie_assoc_req) 2244 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2245#endif /* CONFIG_WIFI_DISPLAY */ 2246 2247 /* 2248 * (Re)Association Request - P2P IE 2249 * P2P Capability attribute (shall be present) 2250 * Extended Listen Timing (may be present) 2251 * P2P Device Info attribute (shall be present) 2252 */ 2253 tmp = wpabuf_alloc(200 + extra); 2254 if (tmp == NULL) 2255 return -1; 2256 2257#ifdef CONFIG_WIFI_DISPLAY 2258 if (p2p->wfd_ie_assoc_req) 2259 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2260#endif /* CONFIG_WIFI_DISPLAY */ 2261 2262 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2263 2264 lpos = p2p_buf_add_ie_hdr(tmp); 2265 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2266 if (p2p->ext_listen_interval) 2267 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2268 p2p->ext_listen_interval); 2269 p2p_buf_add_device_info(tmp, p2p, peer); 2270 p2p_buf_update_ie_hdr(tmp, lpos); 2271 2272 tmplen = wpabuf_len(tmp); 2273 if (tmplen > len) 2274 res = -1; 2275 else { 2276 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2277 res = tmplen; 2278 } 2279 wpabuf_free(tmp); 2280 2281 return res; 2282} 2283 2284 2285int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2286{ 2287 struct wpabuf *p2p_ie; 2288 int ret; 2289 2290 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2291 if (p2p_ie == NULL) 2292 return 0; 2293 2294 ret = p2p_attr_text(p2p_ie, buf, end); 2295 wpabuf_free(p2p_ie); 2296 return ret; 2297} 2298 2299 2300int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2301{ 2302 struct p2p_message msg; 2303 2304 os_memset(&msg, 0, sizeof(msg)); 2305 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2306 return -1; 2307 2308 if (msg.p2p_device_addr) { 2309 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2310 return 0; 2311 } else if (msg.device_id) { 2312 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2313 return 0; 2314 } 2315 return -1; 2316} 2317 2318 2319int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2320{ 2321 struct wpabuf *p2p_ie; 2322 int ret; 2323 2324 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2325 P2P_IE_VENDOR_TYPE); 2326 if (p2p_ie == NULL) 2327 return -1; 2328 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2329 wpabuf_free(p2p_ie); 2330 return ret; 2331} 2332 2333 2334static void p2p_clear_go_neg(struct p2p_data *p2p) 2335{ 2336 p2p->go_neg_peer = NULL; 2337 p2p_clear_timeout(p2p); 2338 p2p_set_state(p2p, P2P_IDLE); 2339} 2340 2341 2342void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2343{ 2344 if (p2p->go_neg_peer == NULL) { 2345 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2346 return; /* No pending Group Formation */ 2347 } 2348 2349 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2350 0) { 2351 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2352 MACSTR " (GO Negotiation peer " MACSTR ")", 2353 MAC2STR(mac_addr), 2354 MAC2STR(p2p->go_neg_peer->intended_addr)); 2355 return; /* Ignore unexpected peer address */ 2356 } 2357 2358 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2359 MAC2STR(mac_addr)); 2360 2361 p2p_clear_go_neg(p2p); 2362} 2363 2364 2365void p2p_group_formation_failed(struct p2p_data *p2p) 2366{ 2367 if (p2p->go_neg_peer == NULL) { 2368 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2369 return; /* No pending Group Formation */ 2370 } 2371 2372 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2373 MAC2STR(p2p->go_neg_peer->intended_addr)); 2374 2375 p2p_clear_go_neg(p2p); 2376} 2377 2378 2379struct p2p_data * p2p_init(const struct p2p_config *cfg) 2380{ 2381 struct p2p_data *p2p; 2382 2383 if (cfg->max_peers < 1) 2384 return NULL; 2385 2386 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2387 if (p2p == NULL) 2388 return NULL; 2389 p2p->cfg = (struct p2p_config *) (p2p + 1); 2390 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2391 if (cfg->dev_name) 2392 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2393 if (cfg->manufacturer) 2394 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2395 if (cfg->model_name) 2396 p2p->cfg->model_name = os_strdup(cfg->model_name); 2397 if (cfg->model_number) 2398 p2p->cfg->model_number = os_strdup(cfg->model_number); 2399 if (cfg->serial_number) 2400 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2401 if (cfg->pref_chan) { 2402 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2403 sizeof(struct p2p_channel)); 2404 if (p2p->cfg->pref_chan) { 2405 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2406 cfg->num_pref_chan * 2407 sizeof(struct p2p_channel)); 2408 } else 2409 p2p->cfg->num_pref_chan = 0; 2410 } 2411 2412#ifdef ANDROID_P2P 2413 /* 100ms listen time is too less to receive the response frames in some scenarios 2414 * increasing min listen time to 200ms. 2415 */ 2416 p2p->min_disc_int = 2; 2417 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2418 p2p->sd_dev_list = NULL; 2419#else 2420 p2p->min_disc_int = 1; 2421#endif 2422 p2p->max_disc_int = 3; 2423 p2p->max_disc_tu = -1; 2424 2425 os_get_random(&p2p->next_tie_breaker, 1); 2426 p2p->next_tie_breaker &= 0x01; 2427 if (cfg->sd_request) 2428 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2429 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2430 if (cfg->concurrent_operations) 2431 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2432 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2433 2434 dl_list_init(&p2p->devices); 2435 2436 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2437 p2p_expiration_timeout, p2p, NULL); 2438 2439 p2p->go_timeout = 100; 2440 p2p->client_timeout = 20; 2441 2442 p2p_dbg(p2p, "initialized"); 2443 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 2444 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 2445 2446 return p2p; 2447} 2448 2449 2450void p2p_deinit(struct p2p_data *p2p) 2451{ 2452#ifdef CONFIG_WIFI_DISPLAY 2453 wpabuf_free(p2p->wfd_ie_beacon); 2454 wpabuf_free(p2p->wfd_ie_probe_req); 2455 wpabuf_free(p2p->wfd_ie_probe_resp); 2456 wpabuf_free(p2p->wfd_ie_assoc_req); 2457 wpabuf_free(p2p->wfd_ie_invitation); 2458 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2459 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2460 wpabuf_free(p2p->wfd_ie_go_neg); 2461 wpabuf_free(p2p->wfd_dev_info); 2462 wpabuf_free(p2p->wfd_assoc_bssid); 2463 wpabuf_free(p2p->wfd_coupled_sink_info); 2464#endif /* CONFIG_WIFI_DISPLAY */ 2465 2466 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2467 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2468 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2469 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2470 p2p_flush(p2p); 2471 p2p_free_req_dev_types(p2p); 2472 os_free(p2p->cfg->dev_name); 2473 os_free(p2p->cfg->manufacturer); 2474 os_free(p2p->cfg->model_name); 2475 os_free(p2p->cfg->model_number); 2476 os_free(p2p->cfg->serial_number); 2477 os_free(p2p->cfg->pref_chan); 2478 os_free(p2p->groups); 2479 wpabuf_free(p2p->sd_resp); 2480 os_free(p2p->after_scan_tx); 2481 p2p_remove_wps_vendor_extensions(p2p); 2482 os_free(p2p->no_go_freq.range); 2483 os_free(p2p); 2484} 2485 2486 2487void p2p_flush(struct p2p_data *p2p) 2488{ 2489 struct p2p_device *dev, *prev; 2490 p2p_stop_find(p2p); 2491 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2492 list) { 2493 dl_list_del(&dev->list); 2494 p2p_device_free(p2p, dev); 2495 } 2496#ifdef ANDROID_P2P 2497 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2498 p2p->sd_dev_list = NULL; 2499#endif 2500 p2p_free_sd_queries(p2p); 2501 os_free(p2p->after_scan_tx); 2502 p2p->after_scan_tx = NULL; 2503} 2504 2505 2506int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2507{ 2508 struct p2p_device *dev; 2509 2510 dev = p2p_get_device(p2p, addr); 2511 if (dev == NULL) 2512 return -1; 2513 2514 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 2515 2516 if (p2p->go_neg_peer == dev) 2517 p2p->go_neg_peer = NULL; 2518 2519 dev->wps_method = WPS_NOT_READY; 2520 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2521 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2522 2523 /* Check if after_scan_tx is for this peer. If so free it */ 2524 if (p2p->after_scan_tx && 2525 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2526 os_free(p2p->after_scan_tx); 2527 p2p->after_scan_tx = NULL; 2528 } 2529 2530 return 0; 2531} 2532 2533 2534int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2535{ 2536 os_free(p2p->cfg->dev_name); 2537 if (dev_name) { 2538 p2p->cfg->dev_name = os_strdup(dev_name); 2539 if (p2p->cfg->dev_name == NULL) 2540 return -1; 2541 } else 2542 p2p->cfg->dev_name = NULL; 2543 return 0; 2544} 2545 2546 2547int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2548{ 2549 os_free(p2p->cfg->manufacturer); 2550 p2p->cfg->manufacturer = NULL; 2551 if (manufacturer) { 2552 p2p->cfg->manufacturer = os_strdup(manufacturer); 2553 if (p2p->cfg->manufacturer == NULL) 2554 return -1; 2555 } 2556 2557 return 0; 2558} 2559 2560 2561int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2562{ 2563 os_free(p2p->cfg->model_name); 2564 p2p->cfg->model_name = NULL; 2565 if (model_name) { 2566 p2p->cfg->model_name = os_strdup(model_name); 2567 if (p2p->cfg->model_name == NULL) 2568 return -1; 2569 } 2570 2571 return 0; 2572} 2573 2574 2575int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2576{ 2577 os_free(p2p->cfg->model_number); 2578 p2p->cfg->model_number = NULL; 2579 if (model_number) { 2580 p2p->cfg->model_number = os_strdup(model_number); 2581 if (p2p->cfg->model_number == NULL) 2582 return -1; 2583 } 2584 2585 return 0; 2586} 2587 2588 2589int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2590{ 2591 os_free(p2p->cfg->serial_number); 2592 p2p->cfg->serial_number = NULL; 2593 if (serial_number) { 2594 p2p->cfg->serial_number = os_strdup(serial_number); 2595 if (p2p->cfg->serial_number == NULL) 2596 return -1; 2597 } 2598 2599 return 0; 2600} 2601 2602 2603void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2604{ 2605 p2p->cfg->config_methods = config_methods; 2606} 2607 2608 2609void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2610{ 2611 os_memcpy(p2p->cfg->uuid, uuid, 16); 2612} 2613 2614 2615int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2616{ 2617 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2618 return 0; 2619} 2620 2621 2622int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2623 size_t num_dev_types) 2624{ 2625 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2626 num_dev_types = P2P_SEC_DEVICE_TYPES; 2627 p2p->cfg->num_sec_dev_types = num_dev_types; 2628 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2629 return 0; 2630} 2631 2632 2633void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2634{ 2635 int i; 2636 2637 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2638 wpabuf_free(p2p->wps_vendor_ext[i]); 2639 p2p->wps_vendor_ext[i] = NULL; 2640 } 2641} 2642 2643 2644int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2645 const struct wpabuf *vendor_ext) 2646{ 2647 int i; 2648 2649 if (vendor_ext == NULL) 2650 return -1; 2651 2652 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2653 if (p2p->wps_vendor_ext[i] == NULL) 2654 break; 2655 } 2656 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2657 return -1; 2658 2659 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2660 if (p2p->wps_vendor_ext[i] == NULL) 2661 return -1; 2662 2663 return 0; 2664} 2665 2666 2667int p2p_set_country(struct p2p_data *p2p, const char *country) 2668{ 2669 os_memcpy(p2p->cfg->country, country, 3); 2670 return 0; 2671} 2672 2673 2674void p2p_continue_find(struct p2p_data *p2p) 2675{ 2676 struct p2p_device *dev; 2677#ifdef ANDROID_P2P 2678 int skip=1; 2679#endif 2680 p2p_set_state(p2p, P2P_SEARCH); 2681 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2682#ifdef ANDROID_P2P 2683 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2684 * There may be a scenario, where a particular peer device have 2685 * not registered any query response. When we send a SD request to such device, 2686 * no response will be received. And if we continue to get probe responses from that device, 2687 * and if that device happens to be on top in our device list, 2688 * we will always continue to send SD requests always to that peer only. 2689 * We will not be able to send SD requests to other devices in that case. 2690 * This implementation keeps track of last serviced peer device. 2691 * And then takes the next one from the device list, in the next iteration. 2692 */ 2693 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2694 if(skip) { 2695 if ((&dev->list == p2p->sd_dev_list) ) { 2696 skip = 0; 2697 if (dev->list.next == &p2p->devices) 2698 p2p->sd_dev_list = NULL; 2699 } 2700 continue; 2701 } 2702 } 2703 p2p->sd_dev_list = &dev->list; 2704 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2705 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2706 MAC2STR(dev->info.p2p_device_addr)); 2707#endif 2708 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2709 if (p2p_start_sd(p2p, dev) == 0) 2710 return; 2711 else 2712 break; 2713 } else if (dev->req_config_methods && 2714 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2715 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2716 MACSTR " (config methods 0x%x)", 2717 MAC2STR(dev->info.p2p_device_addr), 2718 dev->req_config_methods); 2719 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2720 return; 2721 } 2722 } 2723 2724 p2p_listen_in_find(p2p, 1); 2725} 2726 2727 2728static void p2p_sd_cb(struct p2p_data *p2p, int success) 2729{ 2730 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 2731 success); 2732 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2733 2734 if (!success) { 2735 if (p2p->sd_peer) { 2736 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2737 p2p->sd_peer = NULL; 2738 } 2739 p2p_continue_find(p2p); 2740 return; 2741 } 2742 2743 if (p2p->sd_peer == NULL) { 2744 p2p_dbg(p2p, "No SD peer entry known"); 2745 p2p_continue_find(p2p); 2746 return; 2747 } 2748 2749 /* Wait for response from the peer */ 2750 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2751 p2p_set_timeout(p2p, 0, 200000); 2752} 2753 2754 2755/** 2756 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2757 * @p2p: P2P module context from p2p_init() 2758 */ 2759static void p2p_retry_pd(struct p2p_data *p2p) 2760{ 2761 struct p2p_device *dev; 2762 2763 if (p2p->state != P2P_IDLE) 2764 return; 2765 2766 /* 2767 * Retry the prov disc req attempt only for the peer that the user had 2768 * requested. 2769 */ 2770 2771 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2772 if (os_memcmp(p2p->pending_pd_devaddr, 2773 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2774 continue; 2775 if (!dev->req_config_methods) 2776 continue; 2777 2778 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2779 MACSTR " (config methods 0x%x)", 2780 MAC2STR(dev->info.p2p_device_addr), 2781 dev->req_config_methods); 2782 p2p_send_prov_disc_req(p2p, dev, 2783 dev->flags & P2P_DEV_PD_FOR_JOIN, 2784 p2p->pd_force_freq); 2785 return; 2786 } 2787} 2788 2789 2790static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2791{ 2792 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 2793 success); 2794 2795 /* 2796 * Postpone resetting the pending action state till after we actually 2797 * time out. This allows us to take some action like notifying any 2798 * interested parties about no response to the request. 2799 * 2800 * When the timer (below) goes off we check in IDLE, SEARCH, or 2801 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2802 * requests in, if this was still pending and then raise notification. 2803 */ 2804 2805 if (!success) { 2806 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2807 2808 if (p2p->user_initiated_pd && 2809 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2810 { 2811 /* Retry request from timeout to avoid busy loops */ 2812 p2p->pending_action_state = P2P_PENDING_PD; 2813 p2p_set_timeout(p2p, 0, 50000); 2814 } else if (p2p->state != P2P_IDLE) 2815 p2p_continue_find(p2p); 2816 else if (p2p->user_initiated_pd) { 2817 p2p->pending_action_state = P2P_PENDING_PD; 2818 p2p_set_timeout(p2p, 0, 300000); 2819 } 2820 return; 2821 } 2822 2823 /* 2824 * This postponing, of resetting pending_action_state, needs to be 2825 * done only for user initiated PD requests and not internal ones. 2826 */ 2827 if (p2p->user_initiated_pd) 2828 p2p->pending_action_state = P2P_PENDING_PD; 2829 else 2830 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2831 2832 /* Wait for response from the peer */ 2833 if (p2p->state == P2P_SEARCH) 2834 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2835 p2p_set_timeout(p2p, 0, 200000); 2836} 2837 2838 2839int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2840 struct os_reltime *rx_time, int level, const u8 *ies, 2841 size_t ies_len) 2842{ 2843 if (os_reltime_before(rx_time, &p2p->find_start)) { 2844 /* 2845 * The driver may have cached (e.g., in cfg80211 BSS table) the 2846 * scan results for relatively long time. To avoid reporting 2847 * stale information, update P2P peers only based on results 2848 * that have based on frames received after the last p2p_find 2849 * operation was started. 2850 */ 2851 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 2852 " (rx_time=%u.%06u)", 2853 MAC2STR(bssid), (unsigned int) rx_time->sec, 2854 (unsigned int) rx_time->usec); 2855 return 0; 2856 } 2857 2858 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 2859 2860 return 0; 2861} 2862 2863 2864void p2p_scan_res_handled(struct p2p_data *p2p) 2865{ 2866 if (!p2p->p2p_scan_running) { 2867 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 2868 } 2869 p2p->p2p_scan_running = 0; 2870 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2871 2872 if (p2p_run_after_scan(p2p)) 2873 return; 2874 if (p2p->state == P2P_SEARCH) 2875 p2p_continue_find(p2p); 2876} 2877 2878 2879void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2880{ 2881 u8 *len; 2882 2883#ifdef CONFIG_WIFI_DISPLAY 2884 if (p2p->wfd_ie_probe_req) 2885 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2886#endif /* CONFIG_WIFI_DISPLAY */ 2887 2888 len = p2p_buf_add_ie_hdr(ies); 2889 p2p_buf_add_capability(ies, p2p->dev_capab & 2890 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2891 if (dev_id) 2892 p2p_buf_add_device_id(ies, dev_id); 2893 if (p2p->cfg->reg_class && p2p->cfg->channel) 2894 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2895 p2p->cfg->reg_class, 2896 p2p->cfg->channel); 2897 if (p2p->ext_listen_interval) 2898 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2899 p2p->ext_listen_interval); 2900 /* TODO: p2p_buf_add_operating_channel() if GO */ 2901 p2p_buf_update_ie_hdr(ies, len); 2902} 2903 2904 2905size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2906{ 2907 size_t len = 100; 2908 2909#ifdef CONFIG_WIFI_DISPLAY 2910 if (p2p && p2p->wfd_ie_probe_req) 2911 len += wpabuf_len(p2p->wfd_ie_probe_req); 2912#endif /* CONFIG_WIFI_DISPLAY */ 2913 2914 return len; 2915} 2916 2917 2918int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2919{ 2920 return p2p_attr_text(p2p_ie, buf, end); 2921} 2922 2923 2924static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2925{ 2926 struct p2p_device *dev = p2p->go_neg_peer; 2927 int timeout; 2928 2929 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 2930 2931 if (dev == NULL) { 2932 p2p_dbg(p2p, "No pending GO Negotiation"); 2933 return; 2934 } 2935 2936 if (success) { 2937 if (dev->flags & P2P_DEV_USER_REJECTED) { 2938 p2p_set_state(p2p, P2P_IDLE); 2939 return; 2940 } 2941 } else if (dev->go_neg_req_sent) { 2942 /* Cancel the increment from p2p_connect_send() on failure */ 2943 dev->go_neg_req_sent--; 2944 } 2945 2946 if (!success && 2947 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2948 !is_zero_ether_addr(dev->member_in_go_dev)) { 2949 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 2950 MAC2STR(dev->info.p2p_device_addr)); 2951 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2952 p2p_send_dev_disc_req(p2p, dev); 2953 return; 2954 } 2955 2956 /* 2957 * Use P2P find, if needed, to find the other device from its listen 2958 * channel. 2959 */ 2960 p2p_set_state(p2p, P2P_CONNECT); 2961 timeout = success ? 500000 : 100000; 2962 if (!success && p2p->go_neg_peer && 2963 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 2964 unsigned int r; 2965 /* 2966 * Peer is expected to wait our response and we will skip the 2967 * listen phase. Add some randomness to the wait time here to 2968 * make it less likely to hit cases where we could end up in 2969 * sync with peer not listening. 2970 */ 2971 os_get_random((u8 *) &r, sizeof(r)); 2972 timeout += r % 100000; 2973 } 2974 p2p_set_timeout(p2p, 0, timeout); 2975} 2976 2977 2978static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2979{ 2980 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 2981 success); 2982 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2983 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 2984 return; 2985 } 2986 p2p_set_state(p2p, P2P_CONNECT); 2987 p2p_set_timeout(p2p, 0, 500000); 2988} 2989 2990 2991static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 2992 const u8 *addr) 2993{ 2994 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 2995 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2996 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2997 p2p->go_neg_peer->status); 2998 } else if (success) { 2999 struct p2p_device *dev; 3000 dev = p2p_get_device(p2p, addr); 3001 if (dev && 3002 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 3003 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 3004 } 3005} 3006 3007 3008static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3009 enum p2p_send_action_result result) 3010{ 3011 struct p2p_device *dev; 3012 3013 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 3014 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3015 if (result == P2P_SEND_ACTION_FAILED) { 3016 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3017 return; 3018 } 3019 if (result == P2P_SEND_ACTION_NO_ACK) { 3020 /* 3021 * It looks like the TX status for GO Negotiation Confirm is 3022 * often showing failure even when the peer has actually 3023 * received the frame. Since the peer may change channels 3024 * immediately after having received the frame, we may not see 3025 * an Ack for retries, so just dropping a single frame may 3026 * trigger this. To allow the group formation to succeed if the 3027 * peer did indeed receive the frame, continue regardless of 3028 * the TX status. 3029 */ 3030 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 3031 } 3032 3033 dev = p2p->go_neg_peer; 3034 if (dev == NULL) 3035 return; 3036 3037 p2p_go_complete(p2p, dev); 3038} 3039 3040 3041void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3042 const u8 *src, const u8 *bssid, 3043 enum p2p_send_action_result result) 3044{ 3045 enum p2p_pending_action_state state; 3046 int success; 3047 3048 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 3049 " src=" MACSTR " bssid=" MACSTR " result=%d", 3050 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3051 MAC2STR(bssid), result); 3052 success = result == P2P_SEND_ACTION_SUCCESS; 3053 state = p2p->pending_action_state; 3054 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3055 switch (state) { 3056 case P2P_NO_PENDING_ACTION: 3057 if (p2p->after_scan_tx_in_progress) { 3058 p2p->after_scan_tx_in_progress = 0; 3059 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING && 3060 p2p_run_after_scan(p2p)) 3061 break; 3062 if (p2p->state == P2P_SEARCH) { 3063 p2p_dbg(p2p, "Continue find after after_scan_tx completion"); 3064 p2p_continue_find(p2p); 3065 } 3066 } 3067 break; 3068 case P2P_PENDING_GO_NEG_REQUEST: 3069 p2p_go_neg_req_cb(p2p, success); 3070 break; 3071 case P2P_PENDING_GO_NEG_RESPONSE: 3072 p2p_go_neg_resp_cb(p2p, success); 3073 break; 3074 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3075 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3076 break; 3077 case P2P_PENDING_GO_NEG_CONFIRM: 3078 p2p_go_neg_conf_cb(p2p, result); 3079 break; 3080 case P2P_PENDING_SD: 3081 p2p_sd_cb(p2p, success); 3082 break; 3083 case P2P_PENDING_PD: 3084 p2p_prov_disc_cb(p2p, success); 3085 break; 3086 case P2P_PENDING_INVITATION_REQUEST: 3087 p2p_invitation_req_cb(p2p, success); 3088 break; 3089 case P2P_PENDING_INVITATION_RESPONSE: 3090 p2p_invitation_resp_cb(p2p, success); 3091 break; 3092 case P2P_PENDING_DEV_DISC_REQUEST: 3093 p2p_dev_disc_req_cb(p2p, success); 3094 break; 3095 case P2P_PENDING_DEV_DISC_RESPONSE: 3096 p2p_dev_disc_resp_cb(p2p, success); 3097 break; 3098 case P2P_PENDING_GO_DISC_REQ: 3099 p2p_go_disc_req_cb(p2p, success); 3100 break; 3101 } 3102 3103 p2p->after_scan_tx_in_progress = 0; 3104} 3105 3106 3107void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3108 unsigned int duration) 3109{ 3110 if (freq == p2p->pending_client_disc_freq) { 3111 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3112 p2p->pending_client_disc_freq = 0; 3113 return; 3114 } 3115 3116 if (freq != p2p->pending_listen_freq) { 3117 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3118 freq, duration, p2p->pending_listen_freq); 3119 return; 3120 } 3121 3122 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3123 p2p->pending_listen_sec, p2p->pending_listen_usec, 3124 p2p->pending_listen_freq); 3125 p2p->in_listen = 1; 3126 p2p->drv_in_listen = freq; 3127 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3128 /* 3129 * Add 20 msec extra wait to avoid race condition with driver 3130 * remain-on-channel end event, i.e., give driver more time to 3131 * complete the operation before our timeout expires. 3132 */ 3133 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3134 p2p->pending_listen_usec + 20000); 3135 } 3136 3137 p2p->pending_listen_freq = 0; 3138} 3139 3140 3141int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3142{ 3143 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3144 p2p->drv_in_listen = 0; 3145 if (p2p->in_listen) 3146 return 0; /* Internal timeout will trigger the next step */ 3147 3148 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3149 if (p2p->go_neg_peer->connect_reqs >= 120) { 3150 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3151 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3152 return 0; 3153 } 3154 3155 p2p_set_state(p2p, P2P_CONNECT); 3156 p2p_connect_send(p2p, p2p->go_neg_peer); 3157 return 1; 3158 } else if (p2p->state == P2P_SEARCH) { 3159 if (p2p->p2p_scan_running) { 3160 /* 3161 * Search is already in progress. This can happen if 3162 * an Action frame RX is reported immediately after 3163 * the end of a remain-on-channel operation and the 3164 * response frame to that is sent using an offchannel 3165 * operation while in p2p_find. Avoid an attempt to 3166 * restart a scan here. 3167 */ 3168 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3169 return 1; 3170 } 3171 if (p2p->pending_listen_freq) { 3172 /* 3173 * Better wait a bit if the driver is unable to start 3174 * offchannel operation for some reason. p2p_search() 3175 * will be started from internal timeout. 3176 */ 3177 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3178 p2p_set_timeout(p2p, 0, 100000); 3179 return 1; 3180 } 3181 if (p2p->search_delay) { 3182 p2p_dbg(p2p, "Delay search operation by %u ms", 3183 p2p->search_delay); 3184 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3185 (p2p->search_delay % 1000) * 1000); 3186 return 1; 3187 } 3188 p2p_search(p2p); 3189 return 1; 3190 } 3191 3192 return 0; 3193} 3194 3195 3196static void p2p_timeout_connect(struct p2p_data *p2p) 3197{ 3198 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3199 if (p2p->go_neg_peer && 3200 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3201 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3202 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3203 return; 3204 } 3205 if (p2p->go_neg_peer && 3206 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3207 p2p->go_neg_peer->connect_reqs < 120) { 3208 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3209 p2p_connect_send(p2p, p2p->go_neg_peer); 3210 return; 3211 } 3212 3213 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3214 p2p_listen_in_find(p2p, 0); 3215} 3216 3217 3218static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3219{ 3220 if (p2p->go_neg_peer) { 3221 if (p2p->drv_in_listen) { 3222 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3223 return; 3224 } 3225 3226 if (p2p->go_neg_peer->connect_reqs >= 120) { 3227 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3228 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3229 return; 3230 } 3231 3232 p2p_set_state(p2p, P2P_CONNECT); 3233 p2p_connect_send(p2p, p2p->go_neg_peer); 3234 } else 3235 p2p_set_state(p2p, P2P_IDLE); 3236} 3237 3238 3239static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3240{ 3241 /* 3242 * TODO: could remain constantly in Listen state for some time if there 3243 * are no other concurrent uses for the radio. For now, go to listen 3244 * state once per second to give other uses a chance to use the radio. 3245 */ 3246 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3247 p2p_set_timeout(p2p, 0, 500000); 3248} 3249 3250 3251static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3252{ 3253 struct p2p_device *dev = p2p->go_neg_peer; 3254 3255 if (dev == NULL) { 3256 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 3257 return; 3258 } 3259 3260 dev->wait_count++; 3261 if (dev->wait_count >= 120) { 3262 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation"); 3263 p2p_go_neg_failed(p2p, dev, -1); 3264 return; 3265 } 3266 3267 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 3268 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3269 p2p_listen_in_find(p2p, 0); 3270} 3271 3272 3273static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3274{ 3275 p2p_dbg(p2p, "Service Discovery Query timeout"); 3276 if (p2p->sd_peer) { 3277 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3278 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3279 p2p->sd_peer = NULL; 3280 } 3281 p2p_continue_find(p2p); 3282} 3283 3284 3285static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3286{ 3287 p2p_dbg(p2p, "Provision Discovery Request timeout"); 3288 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3289 p2p_continue_find(p2p); 3290} 3291 3292 3293static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3294{ 3295 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3296 3297 /* 3298 * For user initiated PD requests that we have not gotten any responses 3299 * for while in IDLE state, we retry them a couple of times before 3300 * giving up. 3301 */ 3302 if (!p2p->user_initiated_pd) 3303 return; 3304 3305 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 3306 3307 if (p2p->pd_retries) { 3308 p2p->pd_retries--; 3309 p2p_retry_pd(p2p); 3310 } else { 3311 struct p2p_device *dev; 3312 int for_join = 0; 3313 3314 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3315 if (os_memcmp(p2p->pending_pd_devaddr, 3316 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3317 continue; 3318 if (dev->req_config_methods && 3319 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3320 for_join = 1; 3321 } 3322 3323 if (p2p->cfg->prov_disc_fail) 3324 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3325 p2p->pending_pd_devaddr, 3326 for_join ? 3327 P2P_PROV_DISC_TIMEOUT_JOIN : 3328 P2P_PROV_DISC_TIMEOUT); 3329 p2p_reset_pending_pd(p2p); 3330 } 3331} 3332 3333 3334static void p2p_timeout_invite(struct p2p_data *p2p) 3335{ 3336 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3337 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3338 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3339 /* 3340 * Better remain on operating channel instead of listen channel 3341 * when running a group. 3342 */ 3343 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 3344 p2p_set_timeout(p2p, 0, 100000); 3345 return; 3346 } 3347 p2p_listen_in_find(p2p, 0); 3348} 3349 3350 3351static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3352{ 3353 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3354 p2p_set_state(p2p, P2P_INVITE); 3355 p2p_invite_send(p2p, p2p->invite_peer, 3356 p2p->invite_go_dev_addr); 3357 } else { 3358 if (p2p->invite_peer) { 3359 p2p_dbg(p2p, "Invitation Request retry limit reached"); 3360 if (p2p->cfg->invitation_result) 3361 p2p->cfg->invitation_result( 3362 p2p->cfg->cb_ctx, -1, NULL, NULL, 3363 p2p->invite_peer->info.p2p_device_addr, 3364 0); 3365 } 3366 p2p_set_state(p2p, P2P_IDLE); 3367 } 3368} 3369 3370 3371static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3372{ 3373 struct p2p_data *p2p = eloop_ctx; 3374 3375 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 3376 3377 p2p->in_listen = 0; 3378 3379 switch (p2p->state) { 3380 case P2P_IDLE: 3381 /* Check if we timed out waiting for PD req */ 3382 if (p2p->pending_action_state == P2P_PENDING_PD) 3383 p2p_timeout_prov_disc_req(p2p); 3384 break; 3385 case P2P_SEARCH: 3386 /* Check if we timed out waiting for PD req */ 3387 if (p2p->pending_action_state == P2P_PENDING_PD) 3388 p2p_timeout_prov_disc_req(p2p); 3389 if (p2p->search_delay && !p2p->in_search_delay) { 3390 p2p_dbg(p2p, "Delay search operation by %u ms", 3391 p2p->search_delay); 3392 p2p->in_search_delay = 1; 3393 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3394 (p2p->search_delay % 1000) * 1000); 3395 break; 3396 } 3397 p2p->in_search_delay = 0; 3398 p2p_search(p2p); 3399 break; 3400 case P2P_CONNECT: 3401 p2p_timeout_connect(p2p); 3402 break; 3403 case P2P_CONNECT_LISTEN: 3404 p2p_timeout_connect_listen(p2p); 3405 break; 3406 case P2P_GO_NEG: 3407 break; 3408 case P2P_LISTEN_ONLY: 3409 /* Check if we timed out waiting for PD req */ 3410 if (p2p->pending_action_state == P2P_PENDING_PD) 3411 p2p_timeout_prov_disc_req(p2p); 3412 3413 if (p2p->ext_listen_only) { 3414 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 3415 p2p->ext_listen_only = 0; 3416 p2p_set_state(p2p, P2P_IDLE); 3417 } 3418 break; 3419 case P2P_WAIT_PEER_CONNECT: 3420 p2p_timeout_wait_peer_connect(p2p); 3421 break; 3422 case P2P_WAIT_PEER_IDLE: 3423 p2p_timeout_wait_peer_idle(p2p); 3424 break; 3425 case P2P_SD_DURING_FIND: 3426 p2p_timeout_sd_during_find(p2p); 3427 break; 3428 case P2P_PROVISIONING: 3429 break; 3430 case P2P_PD_DURING_FIND: 3431 p2p_timeout_prov_disc_during_find(p2p); 3432 break; 3433 case P2P_INVITE: 3434 p2p_timeout_invite(p2p); 3435 break; 3436 case P2P_INVITE_LISTEN: 3437 p2p_timeout_invite_listen(p2p); 3438 break; 3439 } 3440} 3441 3442 3443int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3444{ 3445 struct p2p_device *dev; 3446 3447 dev = p2p_get_device(p2p, peer_addr); 3448 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 3449 MACSTR, MAC2STR(peer_addr)); 3450 if (dev == NULL) { 3451 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 3452 return -1; 3453 } 3454 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3455 dev->flags |= P2P_DEV_USER_REJECTED; 3456 return 0; 3457} 3458 3459 3460const char * p2p_wps_method_text(enum p2p_wps_method method) 3461{ 3462 switch (method) { 3463 case WPS_NOT_READY: 3464 return "not-ready"; 3465 case WPS_PIN_DISPLAY: 3466 return "Display"; 3467 case WPS_PIN_KEYPAD: 3468 return "Keypad"; 3469 case WPS_PBC: 3470 return "PBC"; 3471 } 3472 3473 return "??"; 3474} 3475 3476 3477static const char * p2p_go_state_text(enum p2p_go_state go_state) 3478{ 3479 switch (go_state) { 3480 case UNKNOWN_GO: 3481 return "unknown"; 3482 case LOCAL_GO: 3483 return "local"; 3484 case REMOTE_GO: 3485 return "remote"; 3486 } 3487 3488 return "??"; 3489} 3490 3491 3492const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3493 const u8 *addr, int next) 3494{ 3495 struct p2p_device *dev; 3496 3497 if (addr) 3498 dev = p2p_get_device(p2p, addr); 3499 else 3500 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3501 3502 if (dev && next) { 3503 dev = dl_list_first(&dev->list, struct p2p_device, list); 3504 if (&dev->list == &p2p->devices) 3505 dev = NULL; 3506 } 3507 3508 if (dev == NULL) 3509 return NULL; 3510 3511 return &dev->info; 3512} 3513 3514 3515int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3516 char *buf, size_t buflen) 3517{ 3518 struct p2p_device *dev; 3519 int res; 3520 char *pos, *end; 3521 struct os_reltime now; 3522 3523 if (info == NULL) 3524 return -1; 3525 3526 dev = (struct p2p_device *) (((u8 *) info) - 3527 offsetof(struct p2p_device, info)); 3528 3529 pos = buf; 3530 end = buf + buflen; 3531 3532 os_get_reltime(&now); 3533 res = os_snprintf(pos, end - pos, 3534 "age=%d\n" 3535 "listen_freq=%d\n" 3536 "wps_method=%s\n" 3537 "interface_addr=" MACSTR "\n" 3538 "member_in_go_dev=" MACSTR "\n" 3539 "member_in_go_iface=" MACSTR "\n" 3540 "go_neg_req_sent=%d\n" 3541 "go_state=%s\n" 3542 "dialog_token=%u\n" 3543 "intended_addr=" MACSTR "\n" 3544 "country=%c%c\n" 3545 "oper_freq=%d\n" 3546 "req_config_methods=0x%x\n" 3547 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3548 "status=%d\n" 3549 "wait_count=%u\n" 3550 "invitation_reqs=%u\n", 3551 (int) (now.sec - dev->last_seen.sec), 3552 dev->listen_freq, 3553 p2p_wps_method_text(dev->wps_method), 3554 MAC2STR(dev->interface_addr), 3555 MAC2STR(dev->member_in_go_dev), 3556 MAC2STR(dev->member_in_go_iface), 3557 dev->go_neg_req_sent, 3558 p2p_go_state_text(dev->go_state), 3559 dev->dialog_token, 3560 MAC2STR(dev->intended_addr), 3561 dev->country[0] ? dev->country[0] : '_', 3562 dev->country[1] ? dev->country[1] : '_', 3563 dev->oper_freq, 3564 dev->req_config_methods, 3565 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3566 "[PROBE_REQ_ONLY]" : "", 3567 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3568 dev->flags & P2P_DEV_NOT_YET_READY ? 3569 "[NOT_YET_READY]" : "", 3570 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3571 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3572 "", 3573 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3574 "[PD_PEER_DISPLAY]" : "", 3575 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3576 "[PD_PEER_KEYPAD]" : "", 3577 dev->flags & P2P_DEV_USER_REJECTED ? 3578 "[USER_REJECTED]" : "", 3579 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3580 "[PEER_WAITING_RESPONSE]" : "", 3581 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3582 "[PREFER_PERSISTENT_GROUP]" : "", 3583 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3584 "[WAIT_GO_NEG_RESPONSE]" : "", 3585 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3586 "[WAIT_GO_NEG_CONFIRM]" : "", 3587 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3588 "[GROUP_CLIENT_ONLY]" : "", 3589 dev->flags & P2P_DEV_FORCE_FREQ ? 3590 "[FORCE_FREQ]" : "", 3591 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3592 "[PD_FOR_JOIN]" : "", 3593 dev->status, 3594 dev->wait_count, 3595 dev->invitation_reqs); 3596 if (res < 0 || res >= end - pos) 3597 return pos - buf; 3598 pos += res; 3599 3600 if (dev->ext_listen_period) { 3601 res = os_snprintf(pos, end - pos, 3602 "ext_listen_period=%u\n" 3603 "ext_listen_interval=%u\n", 3604 dev->ext_listen_period, 3605 dev->ext_listen_interval); 3606 if (res < 0 || res >= end - pos) 3607 return pos - buf; 3608 pos += res; 3609 } 3610 3611 if (dev->oper_ssid_len) { 3612 res = os_snprintf(pos, end - pos, 3613 "oper_ssid=%s\n", 3614 wpa_ssid_txt(dev->oper_ssid, 3615 dev->oper_ssid_len)); 3616 if (res < 0 || res >= end - pos) 3617 return pos - buf; 3618 pos += res; 3619 } 3620 3621#ifdef CONFIG_WIFI_DISPLAY 3622 if (dev->info.wfd_subelems) { 3623 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3624 if (res < 0 || res >= end - pos) 3625 return pos - buf; 3626 pos += res; 3627 3628 pos += wpa_snprintf_hex(pos, end - pos, 3629 wpabuf_head(dev->info.wfd_subelems), 3630 wpabuf_len(dev->info.wfd_subelems)); 3631 3632 res = os_snprintf(pos, end - pos, "\n"); 3633 if (res < 0 || res >= end - pos) 3634 return pos - buf; 3635 pos += res; 3636 } 3637#endif /* CONFIG_WIFI_DISPLAY */ 3638 3639 return pos - buf; 3640} 3641 3642 3643int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3644{ 3645 return p2p_get_device(p2p, addr) != NULL; 3646} 3647 3648 3649void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3650{ 3651 if (enabled) { 3652 p2p_dbg(p2p, "Client discoverability enabled"); 3653 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3654 } else { 3655 p2p_dbg(p2p, "Client discoverability disabled"); 3656 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3657 } 3658} 3659 3660 3661static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3662 u32 duration2, u32 interval2) 3663{ 3664 struct wpabuf *req; 3665 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3666 u8 *len; 3667 3668 req = wpabuf_alloc(100); 3669 if (req == NULL) 3670 return NULL; 3671 3672 if (duration1 || interval1) { 3673 os_memset(&desc1, 0, sizeof(desc1)); 3674 desc1.count_type = 1; 3675 desc1.duration = duration1; 3676 desc1.interval = interval1; 3677 ptr1 = &desc1; 3678 3679 if (duration2 || interval2) { 3680 os_memset(&desc2, 0, sizeof(desc2)); 3681 desc2.count_type = 2; 3682 desc2.duration = duration2; 3683 desc2.interval = interval2; 3684 ptr2 = &desc2; 3685 } 3686 } 3687 3688 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3689 len = p2p_buf_add_ie_hdr(req); 3690 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3691 p2p_buf_update_ie_hdr(req, len); 3692 3693 return req; 3694} 3695 3696 3697int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3698 const u8 *own_interface_addr, unsigned int freq, 3699 u32 duration1, u32 interval1, u32 duration2, 3700 u32 interval2) 3701{ 3702 struct wpabuf *req; 3703 3704 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 3705 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 3706 "dur2=%u int2=%u", 3707 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3708 freq, duration1, interval1, duration2, interval2); 3709 3710 req = p2p_build_presence_req(duration1, interval1, duration2, 3711 interval2); 3712 if (req == NULL) 3713 return -1; 3714 3715 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3716 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3717 go_interface_addr, 3718 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3719 p2p_dbg(p2p, "Failed to send Action frame"); 3720 } 3721 wpabuf_free(req); 3722 3723 return 0; 3724} 3725 3726 3727static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3728 size_t noa_len, u8 dialog_token) 3729{ 3730 struct wpabuf *resp; 3731 u8 *len; 3732 3733 resp = wpabuf_alloc(100 + noa_len); 3734 if (resp == NULL) 3735 return NULL; 3736 3737 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3738 len = p2p_buf_add_ie_hdr(resp); 3739 p2p_buf_add_status(resp, status); 3740 if (noa) { 3741 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3742 wpabuf_put_le16(resp, noa_len); 3743 wpabuf_put_data(resp, noa, noa_len); 3744 } else 3745 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3746 p2p_buf_update_ie_hdr(resp, len); 3747 3748 return resp; 3749} 3750 3751 3752static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3753 const u8 *sa, const u8 *data, size_t len, 3754 int rx_freq) 3755{ 3756 struct p2p_message msg; 3757 u8 status; 3758 struct wpabuf *resp; 3759 size_t g; 3760 struct p2p_group *group = NULL; 3761 int parsed = 0; 3762 u8 noa[50]; 3763 int noa_len; 3764 3765 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 3766 3767 for (g = 0; g < p2p->num_groups; g++) { 3768 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3769 ETH_ALEN) == 0) { 3770 group = p2p->groups[g]; 3771 break; 3772 } 3773 } 3774 if (group == NULL) { 3775 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 3776 MACSTR, MAC2STR(da)); 3777 return; 3778 } 3779 3780 if (p2p_parse(data, len, &msg) < 0) { 3781 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 3782 status = P2P_SC_FAIL_INVALID_PARAMS; 3783 goto fail; 3784 } 3785 parsed = 1; 3786 3787 if (msg.noa == NULL) { 3788 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 3789 status = P2P_SC_FAIL_INVALID_PARAMS; 3790 goto fail; 3791 } 3792 3793 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3794 3795fail: 3796 if (p2p->cfg->get_noa) 3797 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3798 sizeof(noa)); 3799 else 3800 noa_len = -1; 3801 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3802 noa_len > 0 ? noa_len : 0, 3803 msg.dialog_token); 3804 if (parsed) 3805 p2p_parse_free(&msg); 3806 if (resp == NULL) 3807 return; 3808 3809 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3810 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3811 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3812 p2p_dbg(p2p, "Failed to send Action frame"); 3813 } 3814 wpabuf_free(resp); 3815} 3816 3817 3818static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3819 const u8 *sa, const u8 *data, size_t len) 3820{ 3821 struct p2p_message msg; 3822 3823 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 3824 3825 if (p2p_parse(data, len, &msg) < 0) { 3826 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 3827 return; 3828 } 3829 3830 if (msg.status == NULL || msg.noa == NULL) { 3831 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 3832 p2p_parse_free(&msg); 3833 return; 3834 } 3835 3836 if (p2p->cfg->presence_resp) { 3837 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status, 3838 msg.noa, msg.noa_len); 3839 } 3840 3841 if (*msg.status) { 3842 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 3843 *msg.status); 3844 p2p_parse_free(&msg); 3845 return; 3846 } 3847 3848 p2p_dbg(p2p, "P2P Presence Request was accepted"); 3849 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3850 msg.noa, msg.noa_len); 3851 /* TODO: process NoA */ 3852 p2p_parse_free(&msg); 3853} 3854 3855 3856static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3857{ 3858 struct p2p_data *p2p = eloop_ctx; 3859 3860 if (p2p->ext_listen_interval) { 3861 /* Schedule next extended listen timeout */ 3862 eloop_register_timeout(p2p->ext_listen_interval_sec, 3863 p2p->ext_listen_interval_usec, 3864 p2p_ext_listen_timeout, p2p, NULL); 3865 } 3866 3867 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3868 /* 3869 * This should not really happen, but it looks like the Listen 3870 * command may fail is something else (e.g., a scan) was 3871 * running at an inconvenient time. As a workaround, allow new 3872 * Extended Listen operation to be started. 3873 */ 3874 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 3875 p2p->ext_listen_only = 0; 3876 p2p_set_state(p2p, P2P_IDLE); 3877 } 3878 3879 if (p2p->state != P2P_IDLE) { 3880 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 3881 return; 3882 } 3883 3884 p2p_dbg(p2p, "Extended Listen timeout"); 3885 p2p->ext_listen_only = 1; 3886 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3887 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 3888 p2p->ext_listen_only = 0; 3889 } 3890} 3891 3892 3893int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3894 unsigned int interval) 3895{ 3896 if (period > 65535 || interval > 65535 || period > interval || 3897 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3898 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 3899 period, interval); 3900 return -1; 3901 } 3902 3903 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3904 3905 if (interval == 0) { 3906 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 3907 p2p->ext_listen_period = 0; 3908 p2p->ext_listen_interval = 0; 3909 return 0; 3910 } 3911 3912 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 3913 period, interval); 3914 p2p->ext_listen_period = period; 3915 p2p->ext_listen_interval = interval; 3916 p2p->ext_listen_interval_sec = interval / 1000; 3917 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3918 3919 eloop_register_timeout(p2p->ext_listen_interval_sec, 3920 p2p->ext_listen_interval_usec, 3921 p2p_ext_listen_timeout, p2p, NULL); 3922 3923 return 0; 3924} 3925 3926 3927void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3928 const u8 *ie, size_t ie_len) 3929{ 3930 struct p2p_message msg; 3931 3932 if (bssid == NULL || ie == NULL) 3933 return; 3934 3935 os_memset(&msg, 0, sizeof(msg)); 3936 if (p2p_parse_ies(ie, ie_len, &msg)) 3937 return; 3938 if (msg.minor_reason_code == NULL) 3939 return; 3940 3941 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 3942 " reason_code=%u minor_reason_code=%u", 3943 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3944 3945 p2p_parse_free(&msg); 3946} 3947 3948 3949void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3950 const u8 *ie, size_t ie_len) 3951{ 3952 struct p2p_message msg; 3953 3954 if (bssid == NULL || ie == NULL) 3955 return; 3956 3957 os_memset(&msg, 0, sizeof(msg)); 3958 if (p2p_parse_ies(ie, ie_len, &msg)) 3959 return; 3960 if (msg.minor_reason_code == NULL) 3961 return; 3962 3963 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR 3964 " reason_code=%u minor_reason_code=%u", 3965 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3966 3967 p2p_parse_free(&msg); 3968} 3969 3970 3971void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 3972{ 3973 if (enabled) { 3974 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 3975 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 3976 } else { 3977 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 3978 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 3979 } 3980} 3981 3982 3983int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 3984{ 3985 if (p2p_channel_to_freq(reg_class, channel) < 0) 3986 return -1; 3987 3988 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 3989 reg_class, channel); 3990 p2p->cfg->reg_class = reg_class; 3991 p2p->cfg->channel = channel; 3992 3993 return 0; 3994} 3995 3996 3997int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 3998{ 3999 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 4000 if (postfix == NULL) { 4001 p2p->cfg->ssid_postfix_len = 0; 4002 return 0; 4003 } 4004 if (len > sizeof(p2p->cfg->ssid_postfix)) 4005 return -1; 4006 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4007 p2p->cfg->ssid_postfix_len = len; 4008 return 0; 4009} 4010 4011 4012int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4013 int cfg_op_channel) 4014{ 4015 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 4016 return -1; 4017 4018 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 4019 op_reg_class, op_channel); 4020 p2p->cfg->op_reg_class = op_reg_class; 4021 p2p->cfg->op_channel = op_channel; 4022 p2p->cfg->cfg_op_channel = cfg_op_channel; 4023 return 0; 4024} 4025 4026 4027int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4028 const struct p2p_channel *pref_chan) 4029{ 4030 struct p2p_channel *n; 4031 4032 if (pref_chan) { 4033 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4034 if (n == NULL) 4035 return -1; 4036 os_memcpy(n, pref_chan, 4037 num_pref_chan * sizeof(struct p2p_channel)); 4038 } else 4039 n = NULL; 4040 4041 os_free(p2p->cfg->pref_chan); 4042 p2p->cfg->pref_chan = n; 4043 p2p->cfg->num_pref_chan = num_pref_chan; 4044 4045 return 0; 4046} 4047 4048 4049int p2p_set_no_go_freq(struct p2p_data *p2p, 4050 const struct wpa_freq_range_list *list) 4051{ 4052 struct wpa_freq_range *tmp; 4053 4054 if (list == NULL || list->num == 0) { 4055 os_free(p2p->no_go_freq.range); 4056 p2p->no_go_freq.range = NULL; 4057 p2p->no_go_freq.num = 0; 4058 return 0; 4059 } 4060 4061 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range)); 4062 if (tmp == NULL) 4063 return -1; 4064 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range)); 4065 os_free(p2p->no_go_freq.range); 4066 p2p->no_go_freq.range = tmp; 4067 p2p->no_go_freq.num = list->num; 4068 p2p_dbg(p2p, "Updated no GO chan list"); 4069 4070 return 0; 4071} 4072 4073 4074int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4075 u8 *iface_addr) 4076{ 4077 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4078 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4079 return -1; 4080 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4081 return 0; 4082} 4083 4084 4085int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4086 u8 *dev_addr) 4087{ 4088 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4089 if (dev == NULL) 4090 return -1; 4091 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4092 return 0; 4093} 4094 4095 4096void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4097{ 4098 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4099 if (is_zero_ether_addr(p2p->peer_filter)) 4100 p2p_dbg(p2p, "Disable peer filter"); 4101 else 4102 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4103 MAC2STR(p2p->peer_filter)); 4104} 4105 4106 4107void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4108{ 4109 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4110 if (p2p->cross_connect == enabled) 4111 return; 4112 p2p->cross_connect = enabled; 4113 /* TODO: may need to tear down any action group where we are GO(?) */ 4114} 4115 4116 4117int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4118{ 4119 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4120 if (dev == NULL) 4121 return -1; 4122 if (dev->oper_freq <= 0) 4123 return -1; 4124 return dev->oper_freq; 4125} 4126 4127 4128void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4129{ 4130 p2p_dbg(p2p, "Intra BSS distribution %s", 4131 enabled ? "enabled" : "disabled"); 4132 p2p->cfg->p2p_intra_bss = enabled; 4133} 4134 4135 4136void p2p_update_channel_list(struct p2p_data *p2p, 4137 const struct p2p_channels *chan, 4138 const struct p2p_channels *cli_chan) 4139{ 4140 p2p_dbg(p2p, "Update channel list"); 4141 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4142 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 4143 os_memcpy(&p2p->cfg->cli_channels, cli_chan, 4144 sizeof(struct p2p_channels)); 4145 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 4146} 4147 4148 4149int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4150 const u8 *src, const u8 *bssid, const u8 *buf, 4151 size_t len, unsigned int wait_time) 4152{ 4153 if (p2p->p2p_scan_running) { 4154 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes"); 4155 if (p2p->after_scan_tx) { 4156 p2p_dbg(p2p, "Dropped previous pending Action frame TX"); 4157 os_free(p2p->after_scan_tx); 4158 } 4159 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4160 len); 4161 if (p2p->after_scan_tx == NULL) 4162 return -1; 4163 p2p->after_scan_tx->freq = freq; 4164 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4165 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4166 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4167 p2p->after_scan_tx->len = len; 4168 p2p->after_scan_tx->wait_time = wait_time; 4169 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4170 return 0; 4171 } 4172 4173 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4174 buf, len, wait_time); 4175} 4176 4177 4178void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4179 int freq_overall) 4180{ 4181 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 4182 freq_24, freq_5, freq_overall); 4183 p2p->best_freq_24 = freq_24; 4184 p2p->best_freq_5 = freq_5; 4185 p2p->best_freq_overall = freq_overall; 4186} 4187 4188 4189void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 4190{ 4191 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 4192 p2p->own_freq_preference = freq; 4193} 4194 4195 4196const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4197{ 4198 if (p2p == NULL || p2p->go_neg_peer == NULL) 4199 return NULL; 4200 return p2p->go_neg_peer->info.p2p_device_addr; 4201} 4202 4203 4204const struct p2p_peer_info * 4205p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4206{ 4207 struct p2p_device *dev; 4208 4209 if (addr) { 4210 dev = p2p_get_device(p2p, addr); 4211 if (!dev) 4212 return NULL; 4213 4214 if (!next) { 4215 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4216 return NULL; 4217 4218 return &dev->info; 4219 } else { 4220 do { 4221 dev = dl_list_first(&dev->list, 4222 struct p2p_device, 4223 list); 4224 if (&dev->list == &p2p->devices) 4225 return NULL; 4226 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4227 } 4228 } else { 4229 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4230 if (!dev) 4231 return NULL; 4232 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4233 dev = dl_list_first(&dev->list, 4234 struct p2p_device, 4235 list); 4236 if (&dev->list == &p2p->devices) 4237 return NULL; 4238 } 4239 } 4240 4241 return &dev->info; 4242} 4243 4244 4245int p2p_in_progress(struct p2p_data *p2p) 4246{ 4247 if (p2p == NULL) 4248 return 0; 4249 if (p2p->state == P2P_SEARCH) 4250 return 2; 4251 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4252} 4253 4254 4255void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4256 u8 client_timeout) 4257{ 4258 if (p2p) { 4259 p2p->go_timeout = go_timeout; 4260 p2p->client_timeout = client_timeout; 4261 } 4262} 4263 4264 4265#ifdef CONFIG_WIFI_DISPLAY 4266 4267static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4268{ 4269 size_t g; 4270 struct p2p_group *group; 4271 4272 for (g = 0; g < p2p->num_groups; g++) { 4273 group = p2p->groups[g]; 4274 p2p_group_force_beacon_update_ies(group); 4275 } 4276} 4277 4278 4279int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4280{ 4281 wpabuf_free(p2p->wfd_ie_beacon); 4282 p2p->wfd_ie_beacon = ie; 4283 p2p_update_wfd_ie_groups(p2p); 4284 return 0; 4285} 4286 4287 4288int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4289{ 4290 wpabuf_free(p2p->wfd_ie_probe_req); 4291 p2p->wfd_ie_probe_req = ie; 4292 return 0; 4293} 4294 4295 4296int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4297{ 4298 wpabuf_free(p2p->wfd_ie_probe_resp); 4299 p2p->wfd_ie_probe_resp = ie; 4300 p2p_update_wfd_ie_groups(p2p); 4301 return 0; 4302} 4303 4304 4305int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4306{ 4307 wpabuf_free(p2p->wfd_ie_assoc_req); 4308 p2p->wfd_ie_assoc_req = ie; 4309 return 0; 4310} 4311 4312 4313int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4314{ 4315 wpabuf_free(p2p->wfd_ie_invitation); 4316 p2p->wfd_ie_invitation = ie; 4317 return 0; 4318} 4319 4320 4321int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4322{ 4323 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4324 p2p->wfd_ie_prov_disc_req = ie; 4325 return 0; 4326} 4327 4328 4329int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4330{ 4331 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4332 p2p->wfd_ie_prov_disc_resp = ie; 4333 return 0; 4334} 4335 4336 4337int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4338{ 4339 wpabuf_free(p2p->wfd_ie_go_neg); 4340 p2p->wfd_ie_go_neg = ie; 4341 return 0; 4342} 4343 4344 4345int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4346{ 4347 wpabuf_free(p2p->wfd_dev_info); 4348 if (elem) { 4349 p2p->wfd_dev_info = wpabuf_dup(elem); 4350 if (p2p->wfd_dev_info == NULL) 4351 return -1; 4352 } else 4353 p2p->wfd_dev_info = NULL; 4354 4355 return 0; 4356} 4357 4358 4359int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4360{ 4361 wpabuf_free(p2p->wfd_assoc_bssid); 4362 if (elem) { 4363 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4364 if (p2p->wfd_assoc_bssid == NULL) 4365 return -1; 4366 } else 4367 p2p->wfd_assoc_bssid = NULL; 4368 4369 return 0; 4370} 4371 4372 4373int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4374 const struct wpabuf *elem) 4375{ 4376 wpabuf_free(p2p->wfd_coupled_sink_info); 4377 if (elem) { 4378 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4379 if (p2p->wfd_coupled_sink_info == NULL) 4380 return -1; 4381 } else 4382 p2p->wfd_coupled_sink_info = NULL; 4383 4384 return 0; 4385} 4386 4387#endif /* CONFIG_WIFI_DISPLAY */ 4388 4389 4390int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4391 int max_disc_tu) 4392{ 4393 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4394 return -1; 4395 4396 p2p->min_disc_int = min_disc_int; 4397 p2p->max_disc_int = max_disc_int; 4398 p2p->max_disc_tu = max_disc_tu; 4399 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 4400 min_disc_int, max_disc_int, max_disc_tu); 4401 4402 return 0; 4403} 4404 4405 4406void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 4407{ 4408 va_list ap; 4409 char buf[500]; 4410 4411 if (!p2p->cfg->debug_print) 4412 return; 4413 4414 va_start(ap, fmt); 4415 vsnprintf(buf, sizeof(buf), fmt, ap); 4416 buf[sizeof(buf) - 1] = '\0'; 4417 va_end(ap); 4418 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 4419} 4420 4421 4422void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 4423{ 4424 va_list ap; 4425 char buf[500]; 4426 4427 if (!p2p->cfg->debug_print) 4428 return; 4429 4430 va_start(ap, fmt); 4431 vsnprintf(buf, sizeof(buf), fmt, ap); 4432 buf[sizeof(buf) - 1] = '\0'; 4433 va_end(ap); 4434 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 4435} 4436 4437 4438void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 4439{ 4440 va_list ap; 4441 char buf[500]; 4442 4443 if (!p2p->cfg->debug_print) 4444 return; 4445 4446 va_start(ap, fmt); 4447 vsnprintf(buf, sizeof(buf), fmt, ap); 4448 buf[sizeof(buf) - 1] = '\0'; 4449 va_end(ap); 4450 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 4451} 4452