1 /* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/ieee802_11_defs.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/wpa_ctrl.h" 16 #include "wps/wps_i.h" 17 #include "p2p_i.h" 18 #include "p2p.h" 19 20 21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 24 const u8 *sa, const u8 *data, size_t len, 25 int rx_freq); 26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 27 const u8 *sa, const u8 *data, 28 size_t len); 29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 31 32 33 /* 34 * p2p_scan recovery timeout 35 * 36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 37 * timeout for this to avoid hitting P2P timeout unnecessarily. 38 */ 39 #define P2P_SCAN_TIMEOUT 35 40 41 /** 42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 43 * entries will be removed 44 */ 45 #ifdef ANDROID_P2P 46 #define P2P_PEER_EXPIRATION_AGE 30 47 #else 48 #define P2P_PEER_EXPIRATION_AGE 300 49 #endif 50 51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2) 52 53 #ifdef ANDROID_P2P 54 int p2p_connection_in_progress(struct p2p_data *p2p) 55 { 56 int ret = 0; 57 58 switch (p2p->state) { 59 case P2P_CONNECT: 60 case P2P_CONNECT_LISTEN: 61 case P2P_GO_NEG: 62 case P2P_WAIT_PEER_CONNECT: 63 case P2P_WAIT_PEER_IDLE: 64 case P2P_PROVISIONING: 65 case P2P_INVITE: 66 case P2P_INVITE_LISTEN: 67 ret = 1; 68 break; 69 70 default: 71 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state); 72 ret = 0; 73 } 74 75 return ret; 76 } 77 #endif 78 79 static void p2p_expire_peers(struct p2p_data *p2p) 80 { 81 struct p2p_device *dev, *n; 82 struct os_time now; 83 size_t i; 84 85 os_get_time(&now); 86 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 87 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 88 continue; 89 90 if (p2p->cfg->go_connected && 91 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 92 dev->info.p2p_device_addr)) { 93 /* 94 * We are connected as a client to a group in which the 95 * peer is the GO, so do not expire the peer entry. 96 */ 97 os_get_time(&dev->last_seen); 98 continue; 99 } 100 101 for (i = 0; i < p2p->num_groups; i++) { 102 if (p2p_group_is_client_connected( 103 p2p->groups[i], dev->info.p2p_device_addr)) 104 break; 105 } 106 if (i < p2p->num_groups) { 107 /* 108 * The peer is connected as a client in a group where 109 * we are the GO, so do not expire the peer entry. 110 */ 111 os_get_time(&dev->last_seen); 112 continue; 113 } 114 115 #ifdef ANDROID_P2P 116 /* If Connection is in progress, don't expire the peer 117 */ 118 if (p2p_connection_in_progress(p2p)) 119 continue; 120 #endif 121 122 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer " 123 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr)); 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 } 133 134 135 static 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 } 142 143 144 static 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 case P2P_SEARCH_WHEN_READY: 174 return "SEARCH_WHEN_READY"; 175 case P2P_CONTINUE_SEARCH_WHEN_READY: 176 return "CONTINUE_SEARCH_WHEN_READY"; 177 default: 178 return "?"; 179 } 180 } 181 182 183 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 184 { 185 struct p2p_device *dev = NULL; 186 187 if (!addr || !p2p) 188 return 0; 189 190 dev = p2p_get_device(p2p, addr); 191 if (dev) 192 return dev->wps_prov_info; 193 else 194 return 0; 195 } 196 197 198 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 199 { 200 struct p2p_device *dev = NULL; 201 202 if (!addr || !p2p) 203 return; 204 205 dev = p2p_get_device(p2p, addr); 206 if (dev) 207 dev->wps_prov_info = 0; 208 } 209 210 211 void p2p_set_state(struct p2p_data *p2p, int new_state) 212 { 213 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s", 214 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 215 p2p->state = new_state; 216 } 217 218 219 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 220 { 221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 222 "P2P: Set timeout (state=%s): %u.%06u sec", 223 p2p_state_txt(p2p->state), sec, usec); 224 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 225 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 226 } 227 228 229 void p2p_clear_timeout(struct p2p_data *p2p) 230 { 231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)", 232 p2p_state_txt(p2p->state)); 233 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 234 } 235 236 237 void 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->wps_method = WPS_NOT_READY; 245 p2p->go_neg_peer = NULL; 246 247 os_memset(&res, 0, sizeof(res)); 248 res.status = status; 249 if (peer) { 250 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 251 ETH_ALEN); 252 os_memcpy(res.peer_interface_addr, peer->intended_addr, 253 ETH_ALEN); 254 } 255 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 256 } 257 258 259 static void p2p_listen_in_find(struct p2p_data *p2p) 260 { 261 unsigned int r, tu; 262 int freq; 263 struct wpabuf *ies; 264 265 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 266 "P2P: Starting short listen state (state=%s)", 267 p2p_state_txt(p2p->state)); 268 269 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 270 p2p->cfg->channel); 271 if (freq < 0) { 272 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 273 "P2P: Unknown regulatory class/channel"); 274 return; 275 } 276 277 os_get_random((u8 *) &r, sizeof(r)); 278 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 279 p2p->min_disc_int) * 100; 280 281 p2p->pending_listen_freq = freq; 282 p2p->pending_listen_sec = 0; 283 p2p->pending_listen_usec = 1024 * tu; 284 285 ies = p2p_build_probe_resp_ies(p2p); 286 if (ies == NULL) 287 return; 288 289 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 290 ies) < 0) { 291 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 292 "P2P: Failed to start listen mode"); 293 p2p->pending_listen_freq = 0; 294 } 295 wpabuf_free(ies); 296 } 297 298 299 int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 300 { 301 int freq; 302 struct wpabuf *ies; 303 304 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 305 "P2P: Going to listen(only) state"); 306 307 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 308 p2p->cfg->channel); 309 if (freq < 0) { 310 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 311 "P2P: Unknown regulatory class/channel"); 312 return -1; 313 } 314 315 p2p->pending_listen_freq = freq; 316 p2p->pending_listen_sec = timeout / 1000; 317 p2p->pending_listen_usec = (timeout % 1000) * 1000; 318 319 if (p2p->p2p_scan_running) { 320 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 321 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 322 "P2P: p2p_scan running - connect is already " 323 "pending - skip listen"); 324 return 0; 325 } 326 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 327 "P2P: p2p_scan running - delay start of listen state"); 328 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 329 return 0; 330 } 331 332 ies = p2p_build_probe_resp_ies(p2p); 333 if (ies == NULL) 334 return -1; 335 336 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 337 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 338 "P2P: Failed to start listen mode"); 339 p2p->pending_listen_freq = 0; 340 wpabuf_free(ies); 341 return -1; 342 } 343 wpabuf_free(ies); 344 345 p2p_set_state(p2p, P2P_LISTEN_ONLY); 346 347 return 0; 348 } 349 350 351 static void p2p_device_clear_reported(struct p2p_data *p2p) 352 { 353 struct p2p_device *dev; 354 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 355 dev->flags &= ~P2P_DEV_REPORTED; 356 } 357 358 359 /** 360 * p2p_get_device - Fetch a peer entry 361 * @p2p: P2P module context from p2p_init() 362 * @addr: P2P Device Address of the peer 363 * Returns: Pointer to the device entry or %NULL if not found 364 */ 365 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 366 { 367 struct p2p_device *dev; 368 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 369 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 370 return dev; 371 } 372 return NULL; 373 } 374 375 376 /** 377 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 378 * @p2p: P2P module context from p2p_init() 379 * @addr: P2P Interface Address of the peer 380 * Returns: Pointer to the device entry or %NULL if not found 381 */ 382 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 383 const u8 *addr) 384 { 385 struct p2p_device *dev; 386 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 387 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 388 return dev; 389 } 390 return NULL; 391 } 392 393 394 /** 395 * p2p_create_device - Create a peer entry 396 * @p2p: P2P module context from p2p_init() 397 * @addr: P2P Device Address of the peer 398 * Returns: Pointer to the device entry or %NULL on failure 399 * 400 * If there is already an entry for the peer, it will be returned instead of 401 * creating a new one. 402 */ 403 static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 404 const u8 *addr) 405 { 406 struct p2p_device *dev, *oldest = NULL; 407 size_t count = 0; 408 409 dev = p2p_get_device(p2p, addr); 410 if (dev) 411 return dev; 412 413 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 414 count++; 415 if (oldest == NULL || 416 os_time_before(&dev->last_seen, &oldest->last_seen)) 417 oldest = dev; 418 } 419 if (count + 1 > p2p->cfg->max_peers && oldest) { 420 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 421 "P2P: Remove oldest peer entry to make room for a new " 422 "peer"); 423 #ifdef ANDROID_P2P 424 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 425 if(&oldest->list == p2p->sd_dev_list) 426 p2p->sd_dev_list = oldest->list.next; 427 #endif 428 dl_list_del(&oldest->list); 429 p2p_device_free(p2p, oldest); 430 } 431 432 dev = os_zalloc(sizeof(*dev)); 433 if (dev == NULL) 434 return NULL; 435 dl_list_add(&p2p->devices, &dev->list); 436 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 437 438 return dev; 439 } 440 441 442 static void p2p_copy_client_info(struct p2p_device *dev, 443 struct p2p_client_info *cli) 444 { 445 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 446 dev->info.device_name[cli->dev_name_len] = '\0'; 447 dev->info.dev_capab = cli->dev_capab; 448 dev->info.config_methods = cli->config_methods; 449 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 450 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 451 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 452 dev->info.wps_sec_dev_type_list_len); 453 } 454 455 456 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 457 const u8 *go_interface_addr, int freq, 458 const u8 *gi, size_t gi_len) 459 { 460 struct p2p_group_info info; 461 size_t c; 462 struct p2p_device *dev; 463 464 if (gi == NULL) 465 return 0; 466 467 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 468 return -1; 469 470 /* 471 * Clear old data for this group; if the devices are still in the 472 * group, the information will be restored in the loop following this. 473 */ 474 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 475 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 476 ETH_ALEN) == 0) { 477 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 478 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 479 } 480 } 481 482 for (c = 0; c < info.num_clients; c++) { 483 struct p2p_client_info *cli = &info.client[c]; 484 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 485 ETH_ALEN) == 0) 486 continue; /* ignore our own entry */ 487 dev = p2p_get_device(p2p, cli->p2p_device_addr); 488 if (dev) { 489 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 490 P2P_DEV_PROBE_REQ_ONLY)) { 491 /* 492 * Update information since we have not 493 * received this directly from the client. 494 */ 495 p2p_copy_client_info(dev, cli); 496 } else { 497 /* 498 * Need to update P2P Client Discoverability 499 * flag since it is valid only in P2P Group 500 * Info attribute. 501 */ 502 dev->info.dev_capab &= 503 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 504 dev->info.dev_capab |= 505 cli->dev_capab & 506 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 507 } 508 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 509 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 510 } 511 } else { 512 dev = p2p_create_device(p2p, cli->p2p_device_addr); 513 if (dev == NULL) 514 continue; 515 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 516 p2p_copy_client_info(dev, cli); 517 dev->oper_freq = freq; 518 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 519 dev->info.p2p_device_addr, 520 &dev->info, 1); 521 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 522 } 523 524 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 525 ETH_ALEN); 526 os_get_time(&dev->last_seen); 527 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 528 os_memcpy(dev->member_in_go_iface, go_interface_addr, 529 ETH_ALEN); 530 } 531 532 return 0; 533 } 534 535 536 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req, 537 const struct p2p_message *msg) 538 { 539 os_memcpy(dev->info.device_name, msg->device_name, 540 sizeof(dev->info.device_name)); 541 542 if (msg->manufacturer && 543 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 544 os_memset(dev->info.manufacturer, 0, 545 sizeof(dev->info.manufacturer)); 546 os_memcpy(dev->info.manufacturer, msg->manufacturer, 547 msg->manufacturer_len); 548 } 549 550 if (msg->model_name && 551 msg->model_name_len < sizeof(dev->info.model_name)) { 552 os_memset(dev->info.model_name, 0, 553 sizeof(dev->info.model_name)); 554 os_memcpy(dev->info.model_name, msg->model_name, 555 msg->model_name_len); 556 } 557 558 if (msg->model_number && 559 msg->model_number_len < sizeof(dev->info.model_number)) { 560 os_memset(dev->info.model_number, 0, 561 sizeof(dev->info.model_number)); 562 os_memcpy(dev->info.model_number, msg->model_number, 563 msg->model_number_len); 564 } 565 566 if (msg->serial_number && 567 msg->serial_number_len < sizeof(dev->info.serial_number)) { 568 os_memset(dev->info.serial_number, 0, 569 sizeof(dev->info.serial_number)); 570 os_memcpy(dev->info.serial_number, msg->serial_number, 571 msg->serial_number_len); 572 } 573 574 if (msg->pri_dev_type) 575 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 576 sizeof(dev->info.pri_dev_type)); 577 else if (msg->wps_pri_dev_type) 578 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 579 sizeof(dev->info.pri_dev_type)); 580 581 if (msg->wps_sec_dev_type_list) { 582 os_memcpy(dev->info.wps_sec_dev_type_list, 583 msg->wps_sec_dev_type_list, 584 msg->wps_sec_dev_type_list_len); 585 dev->info.wps_sec_dev_type_list_len = 586 msg->wps_sec_dev_type_list_len; 587 } 588 589 if (msg->capability) { 590 /* 591 * P2P Client Discoverability bit is reserved in all frames 592 * that use this function, so do not change its value here. 593 */ 594 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 595 dev->info.dev_capab |= msg->capability[0] & 596 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 597 dev->info.group_capab = msg->capability[1]; 598 } 599 600 if (msg->ext_listen_timing) { 601 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 602 dev->ext_listen_interval = 603 WPA_GET_LE16(msg->ext_listen_timing + 2); 604 } 605 606 if (!probe_req) { 607 dev->info.config_methods = msg->config_methods ? 608 msg->config_methods : msg->wps_config_methods; 609 } 610 } 611 612 613 /** 614 * p2p_add_device - Add peer entries based on scan results or P2P frames 615 * @p2p: P2P module context from p2p_init() 616 * @addr: Source address of Beacon or Probe Response frame (may be either 617 * P2P Device Address or P2P Interface Address) 618 * @level: Signal level (signal strength of the received frame from the peer) 619 * @freq: Frequency on which the Beacon or Probe Response frame was received 620 * @ies: IEs from the Beacon or Probe Response frame 621 * @ies_len: Length of ies buffer in octets 622 * @scan_res: Whether this was based on scan results 623 * Returns: 0 on success, -1 on failure 624 * 625 * If the scan result is for a GO, the clients in the group will also be added 626 * to the peer table. This function can also be used with some other frames 627 * like Provision Discovery Request that contains P2P Capability and P2P Device 628 * Info attributes. 629 */ 630 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level, 631 const u8 *ies, size_t ies_len, int scan_res) 632 { 633 struct p2p_device *dev; 634 struct p2p_message msg; 635 const u8 *p2p_dev_addr; 636 int i; 637 638 os_memset(&msg, 0, sizeof(msg)); 639 if (p2p_parse_ies(ies, ies_len, &msg)) { 640 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 641 "P2P: Failed to parse P2P IE for a device entry"); 642 p2p_parse_free(&msg); 643 return -1; 644 } 645 646 if (msg.p2p_device_addr) 647 p2p_dev_addr = msg.p2p_device_addr; 648 else if (msg.device_id) 649 p2p_dev_addr = msg.device_id; 650 else { 651 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 652 "P2P: Ignore scan data without P2P Device Info or " 653 "P2P Device Id"); 654 p2p_parse_free(&msg); 655 return -1; 656 } 657 658 if (!is_zero_ether_addr(p2p->peer_filter) && 659 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 660 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer " 661 "filter for " MACSTR " due to peer filter", 662 MAC2STR(p2p_dev_addr)); 663 return 0; 664 } 665 666 dev = p2p_create_device(p2p, p2p_dev_addr); 667 if (dev == NULL) { 668 p2p_parse_free(&msg); 669 return -1; 670 } 671 os_get_time(&dev->last_seen); 672 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 673 674 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 675 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 676 if (msg.ssid && 677 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 678 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 679 != 0)) { 680 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 681 dev->oper_ssid_len = msg.ssid[1]; 682 } 683 684 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 685 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 686 int ds_freq; 687 if (*msg.ds_params == 14) 688 ds_freq = 2484; 689 else 690 ds_freq = 2407 + *msg.ds_params * 5; 691 if (freq != ds_freq) { 692 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 693 "P2P: Update Listen frequency based on DS " 694 "Parameter Set IE: %d -> %d MHz", 695 freq, ds_freq); 696 freq = ds_freq; 697 } 698 } 699 700 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 701 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 702 "P2P: Update Listen frequency based on scan " 703 "results (" MACSTR " %d -> %d MHz (DS param %d)", 704 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 705 freq, msg.ds_params ? *msg.ds_params : -1); 706 } 707 if (scan_res) { 708 dev->listen_freq = freq; 709 if (msg.group_info) 710 dev->oper_freq = freq; 711 } 712 dev->info.level = level; 713 714 p2p_copy_wps_info(dev, 0, &msg); 715 716 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 717 wpabuf_free(dev->info.wps_vendor_ext[i]); 718 dev->info.wps_vendor_ext[i] = NULL; 719 } 720 721 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 722 if (msg.wps_vendor_ext[i] == NULL) 723 break; 724 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 725 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 726 if (dev->info.wps_vendor_ext[i] == NULL) 727 break; 728 } 729 730 if (msg.wfd_subelems) { 731 wpabuf_free(dev->info.wfd_subelems); 732 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 733 } 734 735 if (scan_res) { 736 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 737 msg.group_info, msg.group_info_len); 738 } 739 740 p2p_parse_free(&msg); 741 742 if (p2p_pending_sd_req(p2p, dev)) 743 dev->flags |= P2P_DEV_SD_SCHEDULE; 744 745 if (dev->flags & P2P_DEV_REPORTED) 746 return 0; 747 748 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 749 "P2P: Peer found with Listen frequency %d MHz", freq); 750 if (dev->flags & P2P_DEV_USER_REJECTED) { 751 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 752 "P2P: Do not report rejected device"); 753 return 0; 754 } 755 756 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 757 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 758 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 759 760 return 0; 761 } 762 763 764 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 765 { 766 int i; 767 768 if (p2p->go_neg_peer == dev) { 769 /* 770 * If GO Negotiation is in progress, report that it has failed. 771 */ 772 p2p_go_neg_failed(p2p, dev, -1); 773 p2p->go_neg_peer = NULL; 774 } 775 if (p2p->invite_peer == dev) 776 p2p->invite_peer = NULL; 777 if (p2p->sd_peer == dev) 778 p2p->sd_peer = NULL; 779 if (p2p->pending_client_disc_go == dev) 780 p2p->pending_client_disc_go = NULL; 781 782 /* dev_lost() device, but only if it was previously dev_found() */ 783 if (dev->flags & P2P_DEV_REPORTED_ONCE) 784 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 785 dev->info.p2p_device_addr); 786 787 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 788 wpabuf_free(dev->info.wps_vendor_ext[i]); 789 dev->info.wps_vendor_ext[i] = NULL; 790 } 791 792 wpabuf_free(dev->info.wfd_subelems); 793 794 os_free(dev); 795 } 796 797 798 static int p2p_get_next_prog_freq(struct p2p_data *p2p) 799 { 800 struct p2p_channels *c; 801 struct p2p_reg_class *cla; 802 size_t cl, ch; 803 int found = 0; 804 u8 reg_class; 805 u8 channel; 806 int freq; 807 808 c = &p2p->cfg->channels; 809 for (cl = 0; cl < c->reg_classes; cl++) { 810 cla = &c->reg_class[cl]; 811 if (cla->reg_class != p2p->last_prog_scan_class) 812 continue; 813 for (ch = 0; ch < cla->channels; ch++) { 814 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 815 found = 1; 816 break; 817 } 818 } 819 if (found) 820 break; 821 } 822 823 if (!found) { 824 /* Start from beginning */ 825 reg_class = c->reg_class[0].reg_class; 826 channel = c->reg_class[0].channel[0]; 827 } else { 828 /* Pick the next channel */ 829 ch++; 830 if (ch == cla->channels) { 831 cl++; 832 if (cl == c->reg_classes) 833 cl = 0; 834 ch = 0; 835 } 836 reg_class = c->reg_class[cl].reg_class; 837 channel = c->reg_class[cl].channel[ch]; 838 } 839 840 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel); 841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search " 842 "channel: reg_class %u channel %u -> %d MHz", 843 reg_class, channel, freq); 844 p2p->last_prog_scan_class = reg_class; 845 p2p->last_prog_scan_chan = channel; 846 847 if (freq == 2412 || freq == 2437 || freq == 2462) 848 return 0; /* No need to add social channels */ 849 return freq; 850 } 851 852 853 static void p2p_search(struct p2p_data *p2p) 854 { 855 int freq = 0; 856 enum p2p_scan_type type; 857 u16 pw_id = DEV_PW_DEFAULT; 858 int res; 859 860 if (p2p->drv_in_listen) { 861 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still " 862 "in Listen state - wait for it to end before " 863 "continuing"); 864 return; 865 } 866 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 867 868 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 869 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 870 type = P2P_SCAN_SOCIAL_PLUS_ONE; 871 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search " 872 "(+ freq %u)", freq); 873 } else { 874 type = P2P_SCAN_SOCIAL; 875 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search"); 876 } 877 878 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 879 p2p->num_req_dev_types, p2p->req_dev_types, 880 p2p->find_dev_id, pw_id); 881 if (res < 0) { 882 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 883 "P2P: Scan request failed"); 884 p2p_continue_find(p2p); 885 } else if (res == 1) { 886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 887 "p2p_scan at this point - will try again after " 888 "previous scan completes"); 889 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 890 } else { 891 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 892 p2p->p2p_scan_running = 1; 893 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 894 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 895 p2p, NULL); 896 } 897 } 898 899 900 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 901 { 902 struct p2p_data *p2p = eloop_ctx; 903 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop"); 904 p2p_stop_find(p2p); 905 } 906 907 908 static int p2p_run_after_scan(struct p2p_data *p2p) 909 { 910 struct p2p_device *dev; 911 enum p2p_after_scan op; 912 913 if (p2p->after_scan_tx) { 914 /* TODO: schedule p2p_run_after_scan to be called from TX 915 * status callback(?) */ 916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending " 917 "Action frame at p2p_scan completion"); 918 p2p->cfg->send_action(p2p->cfg->cb_ctx, 919 p2p->after_scan_tx->freq, 920 p2p->after_scan_tx->dst, 921 p2p->after_scan_tx->src, 922 p2p->after_scan_tx->bssid, 923 (u8 *) (p2p->after_scan_tx + 1), 924 p2p->after_scan_tx->len, 925 p2p->after_scan_tx->wait_time); 926 os_free(p2p->after_scan_tx); 927 p2p->after_scan_tx = NULL; 928 #ifdef ANDROID_P2P 929 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 930 * At that moment, we will send the SD response from this context. After sending the SD response, 931 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 932 */ 933 return 0; 934 #else 935 return 1; 936 #endif 937 } 938 939 op = p2p->start_after_scan; 940 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 941 switch (op) { 942 case P2P_AFTER_SCAN_NOTHING: 943 break; 944 case P2P_AFTER_SCAN_LISTEN: 945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 946 "requested Listen state"); 947 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 948 p2p->pending_listen_usec / 1000); 949 return 1; 950 case P2P_AFTER_SCAN_CONNECT: 951 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 952 "requested connect with " MACSTR, 953 MAC2STR(p2p->after_scan_peer)); 954 dev = p2p_get_device(p2p, p2p->after_scan_peer); 955 if (dev == NULL) { 956 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not " 957 "known anymore"); 958 break; 959 } 960 p2p_connect_send(p2p, dev); 961 return 1; 962 } 963 964 return 0; 965 } 966 967 968 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 969 { 970 struct p2p_data *p2p = eloop_ctx; 971 int running; 972 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout " 973 "(running=%d)", p2p->p2p_scan_running); 974 running = p2p->p2p_scan_running; 975 /* Make sure we recover from missed scan results callback */ 976 p2p->p2p_scan_running = 0; 977 978 if (running) 979 p2p_run_after_scan(p2p); 980 } 981 982 983 static void p2p_free_req_dev_types(struct p2p_data *p2p) 984 { 985 p2p->num_req_dev_types = 0; 986 os_free(p2p->req_dev_types); 987 p2p->req_dev_types = NULL; 988 } 989 990 991 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 992 enum p2p_discovery_type type, 993 unsigned int num_req_dev_types, const u8 *req_dev_types, 994 const u8 *dev_id, unsigned int search_delay) 995 { 996 int res; 997 998 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)", 999 type); 1000 if (p2p->p2p_scan_running) { 1001 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is " 1002 "already running"); 1003 } 1004 1005 p2p_free_req_dev_types(p2p); 1006 if (req_dev_types && num_req_dev_types) { 1007 p2p->req_dev_types = os_malloc(num_req_dev_types * 1008 WPS_DEV_TYPE_LEN); 1009 if (p2p->req_dev_types == NULL) 1010 return -1; 1011 os_memcpy(p2p->req_dev_types, req_dev_types, 1012 num_req_dev_types * WPS_DEV_TYPE_LEN); 1013 p2p->num_req_dev_types = num_req_dev_types; 1014 } 1015 1016 if (dev_id) { 1017 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1018 p2p->find_dev_id = p2p->find_dev_id_buf; 1019 } else 1020 p2p->find_dev_id = NULL; 1021 1022 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1023 p2p_clear_timeout(p2p); 1024 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1025 p2p->find_type = type; 1026 p2p_device_clear_reported(p2p); 1027 p2p_set_state(p2p, P2P_SEARCH); 1028 p2p->search_delay = search_delay; 1029 p2p->in_search_delay = 0; 1030 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1031 p2p->last_p2p_find_timeout = timeout; 1032 if (timeout) 1033 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1034 p2p, NULL); 1035 switch (type) { 1036 case P2P_FIND_START_WITH_FULL: 1037 case P2P_FIND_PROGRESSIVE: 1038 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1039 p2p->num_req_dev_types, 1040 p2p->req_dev_types, dev_id, 1041 DEV_PW_DEFAULT); 1042 break; 1043 case P2P_FIND_ONLY_SOCIAL: 1044 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1045 p2p->num_req_dev_types, 1046 p2p->req_dev_types, dev_id, 1047 DEV_PW_DEFAULT); 1048 break; 1049 default: 1050 return -1; 1051 } 1052 1053 if (res == 0) { 1054 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 1055 p2p->p2p_scan_running = 1; 1056 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1057 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1058 p2p, NULL); 1059 } else if (res == 1) { 1060 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 1061 "p2p_scan at this point - will try again after " 1062 "previous scan completes"); 1063 res = 0; 1064 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1065 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1066 } else { 1067 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 1068 "p2p_scan"); 1069 p2p_set_state(p2p, P2P_IDLE); 1070 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1071 } 1072 1073 return res; 1074 } 1075 1076 #ifdef ANDROID_P2P 1077 int p2p_search_pending(struct p2p_data *p2p) 1078 { 1079 if(p2p == NULL) 1080 return 0; 1081 1082 if(p2p->state == P2P_SEARCH_WHEN_READY) 1083 return 1; 1084 1085 return 0; 1086 } 1087 #endif 1088 1089 int p2p_other_scan_completed(struct p2p_data *p2p) 1090 { 1091 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1092 p2p_set_state(p2p, P2P_SEARCH); 1093 p2p_search(p2p); 1094 return 1; 1095 } 1096 if (p2p->state != P2P_SEARCH_WHEN_READY) 1097 return 0; 1098 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find " 1099 "now that previous scan was completed"); 1100 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1101 p2p->num_req_dev_types, p2p->req_dev_types, 1102 p2p->find_dev_id, p2p->search_delay) < 0) 1103 return 0; 1104 return 1; 1105 } 1106 1107 1108 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1109 { 1110 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find"); 1111 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1112 p2p_clear_timeout(p2p); 1113 if (p2p->state == P2P_SEARCH) 1114 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1115 p2p_set_state(p2p, P2P_IDLE); 1116 p2p_free_req_dev_types(p2p); 1117 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 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 1125 void 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 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen " 1129 "since we are on correct channel for response"); 1130 return; 1131 } 1132 if (p2p->in_listen) { 1133 p2p->in_listen = 0; 1134 p2p_clear_timeout(p2p); 1135 } 1136 if (p2p->drv_in_listen) { 1137 /* 1138 * The driver may not deliver callback to p2p_listen_end() 1139 * when the operation gets canceled, so clear the internal 1140 * variable that is tracking driver state. 1141 */ 1142 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear " 1143 "drv_in_listen (%d)", p2p->drv_in_listen); 1144 p2p->drv_in_listen = 0; 1145 } 1146 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1147 } 1148 1149 1150 void p2p_stop_find(struct p2p_data *p2p) 1151 { 1152 p2p_stop_find_for_freq(p2p, 0); 1153 } 1154 1155 1156 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq) 1157 { 1158 if (force_freq) { 1159 u8 op_reg_class, op_channel; 1160 if (p2p_freq_to_channel(p2p->cfg->country, force_freq, 1161 &op_reg_class, &op_channel) < 0) { 1162 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1163 "P2P: Unsupported frequency %u MHz", 1164 force_freq); 1165 return -1; 1166 } 1167 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class, 1168 op_channel)) { 1169 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1170 "P2P: Frequency %u MHz (oper_class %u " 1171 "channel %u) not allowed for P2P", 1172 force_freq, op_reg_class, op_channel); 1173 return -1; 1174 } 1175 p2p->op_reg_class = op_reg_class; 1176 p2p->op_channel = op_channel; 1177 #ifndef ANDROID_P2P 1178 p2p->channels.reg_classes = 1; 1179 p2p->channels.reg_class[0].channels = 1; 1180 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1181 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1182 #else 1183 if(p2p->cfg->p2p_concurrency == P2P_MULTI_CHANNEL_CONCURRENT) { 1184 /* We we are requesting for a preferred channel. But since 1185 * are multichannel concurrent, we have to poplulate the 1186 * p2p_channels with list of channels that we support. 1187 */ 1188 #ifdef ANDROID_P2P 1189 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Full channel list"); 1190 #endif 1191 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1192 sizeof(struct p2p_channels)); 1193 } else { 1194 #ifdef ANDROID_P2P 1195 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Single channel list %d", p2p->op_channel); 1196 #endif 1197 p2p->channels.reg_classes = 1; 1198 p2p->channels.reg_class[0].channels = 1; 1199 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1200 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1201 } 1202 #endif 1203 } else { 1204 u8 op_reg_class, op_channel; 1205 1206 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1207 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1208 p2p_freq_to_channel(p2p->cfg->country, 1209 p2p->best_freq_overall, 1210 &op_reg_class, &op_channel) == 0) { 1211 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1212 "P2P: Select best overall channel as " 1213 "operating channel preference"); 1214 p2p->op_reg_class = op_reg_class; 1215 p2p->op_channel = op_channel; 1216 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1217 p2p_supported_freq(p2p, p2p->best_freq_5) && 1218 p2p_freq_to_channel(p2p->cfg->country, 1219 p2p->best_freq_5, 1220 &op_reg_class, &op_channel) == 1221 0) { 1222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1223 "P2P: Select best 5 GHz channel as " 1224 "operating channel preference"); 1225 p2p->op_reg_class = op_reg_class; 1226 p2p->op_channel = op_channel; 1227 } else if (!p2p->cfg->cfg_op_channel && 1228 p2p->best_freq_24 > 0 && 1229 p2p_supported_freq(p2p, p2p->best_freq_24) && 1230 p2p_freq_to_channel(p2p->cfg->country, 1231 p2p->best_freq_24, 1232 &op_reg_class, &op_channel) == 1233 0) { 1234 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1235 "P2P: Select best 2.4 GHz channel as " 1236 "operating channel preference"); 1237 p2p->op_reg_class = op_reg_class; 1238 p2p->op_channel = op_channel; 1239 } else { 1240 p2p->op_reg_class = p2p->cfg->op_reg_class; 1241 p2p->op_channel = p2p->cfg->op_channel; 1242 } 1243 1244 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1245 sizeof(struct p2p_channels)); 1246 } 1247 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1248 "P2P: Own preference for operation channel: " 1249 "Operating Class %u Channel %u%s", 1250 p2p->op_reg_class, p2p->op_channel, 1251 force_freq ? " (forced)" : ""); 1252 1253 return 0; 1254 } 1255 1256 1257 static void p2p_set_dev_persistent(struct p2p_device *dev, 1258 int persistent_group) 1259 { 1260 switch (persistent_group) { 1261 case 0: 1262 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1263 P2P_DEV_PREFER_PERSISTENT_RECONN); 1264 break; 1265 case 1: 1266 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1267 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1268 break; 1269 case 2: 1270 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1271 P2P_DEV_PREFER_PERSISTENT_RECONN; 1272 break; 1273 } 1274 } 1275 1276 1277 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1278 enum p2p_wps_method wps_method, 1279 int go_intent, const u8 *own_interface_addr, 1280 unsigned int force_freq, int persistent_group, 1281 const u8 *force_ssid, size_t force_ssid_len, 1282 int pd_before_go_neg) 1283 { 1284 struct p2p_device *dev; 1285 1286 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1287 "P2P: Request to start group negotiation - peer=" MACSTR 1288 " GO Intent=%d Intended Interface Address=" MACSTR 1289 " wps_method=%d persistent_group=%d pd_before_go_neg=%d force_freq %d", 1290 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1291 wps_method, persistent_group, pd_before_go_neg, force_freq); 1292 1293 if (p2p_prepare_channel(p2p, force_freq) < 0) 1294 return -1; 1295 1296 dev = p2p_get_device(p2p, peer_addr); 1297 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1298 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1299 "P2P: Cannot connect to unknown P2P Device " MACSTR, 1300 MAC2STR(peer_addr)); 1301 return -1; 1302 } 1303 1304 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1305 if (!(dev->info.dev_capab & 1306 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1307 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1308 "P2P: Cannot connect to P2P Device " MACSTR 1309 " that is in a group and is not discoverable", 1310 MAC2STR(peer_addr)); 1311 return -1; 1312 } 1313 if (dev->oper_freq <= 0) { 1314 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1315 "P2P: Cannot connect to P2P Device " MACSTR 1316 " with incomplete information", 1317 MAC2STR(peer_addr)); 1318 return -1; 1319 } 1320 1321 /* 1322 * First, try to connect directly. If the peer does not 1323 * acknowledge frames, assume it is sleeping and use device 1324 * discoverability via the GO at that point. 1325 */ 1326 } 1327 1328 p2p->ssid_set = 0; 1329 if (force_ssid) { 1330 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1331 force_ssid, force_ssid_len); 1332 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1333 p2p->ssid_len = force_ssid_len; 1334 p2p->ssid_set = 1; 1335 } 1336 1337 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1338 dev->flags &= ~P2P_DEV_USER_REJECTED; 1339 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1340 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1341 if (pd_before_go_neg) 1342 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1343 else 1344 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1345 dev->connect_reqs = 0; 1346 dev->go_neg_req_sent = 0; 1347 dev->go_state = UNKNOWN_GO; 1348 p2p_set_dev_persistent(dev, persistent_group); 1349 p2p->go_intent = go_intent; 1350 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1351 1352 if (p2p->state != P2P_IDLE) 1353 p2p_stop_find(p2p); 1354 1355 if (p2p->after_scan_tx) { 1356 /* 1357 * We need to drop the pending frame to avoid issues with the 1358 * new GO Negotiation, e.g., when the pending frame was from a 1359 * previous attempt at starting a GO Negotiation. 1360 */ 1361 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 1362 "previous pending Action frame TX that was waiting " 1363 "for p2p_scan completion"); 1364 os_free(p2p->after_scan_tx); 1365 p2p->after_scan_tx = NULL; 1366 } 1367 1368 dev->wps_method = wps_method; 1369 dev->status = P2P_SC_SUCCESS; 1370 1371 if (force_freq) 1372 dev->flags |= P2P_DEV_FORCE_FREQ; 1373 else 1374 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1375 1376 if (p2p->p2p_scan_running) { 1377 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1378 "P2P: p2p_scan running - delay connect send"); 1379 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1380 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1381 return 0; 1382 } 1383 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1384 1385 return p2p_connect_send(p2p, dev); 1386 } 1387 1388 1389 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1390 enum p2p_wps_method wps_method, 1391 int go_intent, const u8 *own_interface_addr, 1392 unsigned int force_freq, int persistent_group, 1393 const u8 *force_ssid, size_t force_ssid_len) 1394 { 1395 struct p2p_device *dev; 1396 1397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1398 "P2P: Request to authorize group negotiation - peer=" MACSTR 1399 " GO Intent=%d Intended Interface Address=" MACSTR 1400 " wps_method=%d persistent_group=%d", 1401 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1402 wps_method, persistent_group); 1403 1404 if (p2p_prepare_channel(p2p, force_freq) < 0) 1405 return -1; 1406 1407 dev = p2p_get_device(p2p, peer_addr); 1408 if (dev == NULL) { 1409 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1410 "P2P: Cannot authorize unknown P2P Device " MACSTR, 1411 MAC2STR(peer_addr)); 1412 return -1; 1413 } 1414 1415 p2p->ssid_set = 0; 1416 if (force_ssid) { 1417 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1418 force_ssid, force_ssid_len); 1419 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1420 p2p->ssid_len = force_ssid_len; 1421 p2p->ssid_set = 1; 1422 } 1423 1424 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1425 dev->flags &= ~P2P_DEV_USER_REJECTED; 1426 dev->go_neg_req_sent = 0; 1427 dev->go_state = UNKNOWN_GO; 1428 p2p_set_dev_persistent(dev, persistent_group); 1429 p2p->go_intent = go_intent; 1430 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1431 1432 dev->wps_method = wps_method; 1433 dev->status = P2P_SC_SUCCESS; 1434 1435 if (force_freq) 1436 dev->flags |= P2P_DEV_FORCE_FREQ; 1437 else 1438 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1439 1440 return 0; 1441 } 1442 1443 1444 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1445 struct p2p_device *dev, struct p2p_message *msg) 1446 { 1447 os_get_time(&dev->last_seen); 1448 1449 p2p_copy_wps_info(dev, 0, msg); 1450 1451 if (msg->listen_channel) { 1452 int freq; 1453 freq = p2p_channel_to_freq((char *) msg->listen_channel, 1454 msg->listen_channel[3], 1455 msg->listen_channel[4]); 1456 if (freq < 0) { 1457 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1458 "P2P: Unknown peer Listen channel: " 1459 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1460 msg->listen_channel[0], 1461 msg->listen_channel[1], 1462 msg->listen_channel[2], 1463 msg->listen_channel[3], 1464 msg->listen_channel[4]); 1465 } else { 1466 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update " 1467 "peer " MACSTR " Listen channel: %u -> %u MHz", 1468 MAC2STR(dev->info.p2p_device_addr), 1469 dev->listen_freq, freq); 1470 dev->listen_freq = freq; 1471 } 1472 } 1473 1474 if (msg->wfd_subelems) { 1475 wpabuf_free(dev->info.wfd_subelems); 1476 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1477 } 1478 1479 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1480 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1481 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1482 "P2P: Completed device entry based on data from " 1483 "GO Negotiation Request"); 1484 } else { 1485 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1486 "P2P: Created device entry based on GO Neg Req: " 1487 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1488 "listen_freq=%d", 1489 MAC2STR(dev->info.p2p_device_addr), 1490 dev->info.dev_capab, dev->info.group_capab, 1491 dev->info.device_name, dev->listen_freq); 1492 } 1493 1494 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1495 1496 if (dev->flags & P2P_DEV_USER_REJECTED) { 1497 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1498 "P2P: Do not report rejected device"); 1499 return; 1500 } 1501 1502 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1503 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1504 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1505 } 1506 1507 1508 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1509 { 1510 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1511 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1512 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1513 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1514 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1515 } 1516 1517 1518 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1519 { 1520 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1521 p2p_random(params->passphrase, 8); 1522 return 0; 1523 } 1524 1525 1526 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1527 { 1528 struct p2p_go_neg_results res; 1529 int go = peer->go_state == LOCAL_GO; 1530 struct p2p_channels intersection; 1531 int freqs; 1532 size_t i, j; 1533 1534 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1535 "P2P: GO Negotiation with " MACSTR " completed (%s will be " 1536 "GO)", MAC2STR(peer->info.p2p_device_addr), 1537 go ? "local end" : "peer"); 1538 1539 os_memset(&res, 0, sizeof(res)); 1540 res.role_go = go; 1541 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1542 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1543 res.wps_method = peer->wps_method; 1544 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1545 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1546 res.persistent_group = 2; 1547 else 1548 res.persistent_group = 1; 1549 } 1550 1551 if (go) { 1552 /* Setup AP mode for WPS provisioning */ 1553 res.freq = p2p_channel_to_freq(p2p->cfg->country, 1554 p2p->op_reg_class, 1555 p2p->op_channel); 1556 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1557 res.ssid_len = p2p->ssid_len; 1558 p2p_random(res.passphrase, 8); 1559 } else { 1560 res.freq = peer->oper_freq; 1561 if (p2p->ssid_len) { 1562 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1563 res.ssid_len = p2p->ssid_len; 1564 } 1565 } 1566 1567 p2p_channels_intersect(&p2p->channels, &peer->channels, 1568 &intersection); 1569 freqs = 0; 1570 for (i = 0; i < intersection.reg_classes; i++) { 1571 struct p2p_reg_class *c = &intersection.reg_class[i]; 1572 if (freqs + 1 == P2P_MAX_CHANNELS) 1573 break; 1574 for (j = 0; j < c->channels; j++) { 1575 int freq; 1576 if (freqs + 1 == P2P_MAX_CHANNELS) 1577 break; 1578 freq = p2p_channel_to_freq(peer->country, c->reg_class, 1579 c->channel[j]); 1580 if (freq < 0) 1581 continue; 1582 res.freq_list[freqs++] = freq; 1583 } 1584 } 1585 1586 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1587 1588 p2p_clear_timeout(p2p); 1589 p2p->ssid_set = 0; 1590 peer->go_neg_req_sent = 0; 1591 peer->wps_method = WPS_NOT_READY; 1592 1593 p2p_set_state(p2p, P2P_PROVISIONING); 1594 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1595 } 1596 1597 1598 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1599 const u8 *data, size_t len, int rx_freq) 1600 { 1601 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1602 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1603 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1604 1605 if (len < 1) 1606 return; 1607 1608 switch (data[0]) { 1609 case P2P_GO_NEG_REQ: 1610 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1611 break; 1612 case P2P_GO_NEG_RESP: 1613 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1614 break; 1615 case P2P_GO_NEG_CONF: 1616 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1617 break; 1618 case P2P_INVITATION_REQ: 1619 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1620 rx_freq); 1621 break; 1622 case P2P_INVITATION_RESP: 1623 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1624 break; 1625 case P2P_PROV_DISC_REQ: 1626 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1627 break; 1628 case P2P_PROV_DISC_RESP: 1629 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1630 break; 1631 case P2P_DEV_DISC_REQ: 1632 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1633 break; 1634 case P2P_DEV_DISC_RESP: 1635 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1636 break; 1637 default: 1638 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1639 "P2P: Unsupported P2P Public Action frame type %d", 1640 data[0]); 1641 break; 1642 } 1643 } 1644 1645 1646 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1647 const u8 *sa, const u8 *bssid, const u8 *data, 1648 size_t len, int freq) 1649 { 1650 if (len < 1) 1651 return; 1652 1653 switch (data[0]) { 1654 case WLAN_PA_VENDOR_SPECIFIC: 1655 data++; 1656 len--; 1657 if (len < 3) 1658 return; 1659 if (WPA_GET_BE24(data) != OUI_WFA) 1660 return; 1661 1662 data += 3; 1663 len -= 3; 1664 if (len < 1) 1665 return; 1666 1667 if (*data != P2P_OUI_TYPE) 1668 return; 1669 1670 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1671 break; 1672 case WLAN_PA_GAS_INITIAL_REQ: 1673 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1674 break; 1675 case WLAN_PA_GAS_INITIAL_RESP: 1676 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1677 break; 1678 case WLAN_PA_GAS_COMEBACK_REQ: 1679 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1680 break; 1681 case WLAN_PA_GAS_COMEBACK_RESP: 1682 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1683 break; 1684 } 1685 } 1686 1687 1688 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1689 const u8 *bssid, u8 category, 1690 const u8 *data, size_t len, int freq) 1691 { 1692 if (category == WLAN_ACTION_PUBLIC) { 1693 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1694 return; 1695 } 1696 1697 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1698 return; 1699 1700 if (len < 4) 1701 return; 1702 1703 if (WPA_GET_BE24(data) != OUI_WFA) 1704 return; 1705 data += 3; 1706 len -= 3; 1707 1708 if (*data != P2P_OUI_TYPE) 1709 return; 1710 data++; 1711 len--; 1712 1713 /* P2P action frame */ 1714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1715 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa)); 1716 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1717 1718 if (len < 1) 1719 return; 1720 switch (data[0]) { 1721 case P2P_NOA: 1722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1723 "P2P: Received P2P Action - Notice of Absence"); 1724 /* TODO */ 1725 break; 1726 case P2P_PRESENCE_REQ: 1727 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1728 break; 1729 case P2P_PRESENCE_RESP: 1730 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1731 break; 1732 case P2P_GO_DISC_REQ: 1733 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1734 break; 1735 default: 1736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1737 "P2P: Received P2P Action - unknown type %u", data[0]); 1738 break; 1739 } 1740 } 1741 1742 1743 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1744 { 1745 struct p2p_data *p2p = eloop_ctx; 1746 if (p2p->go_neg_peer == NULL) 1747 return; 1748 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1749 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1750 p2p_connect_send(p2p, p2p->go_neg_peer); 1751 } 1752 1753 1754 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1755 { 1756 struct p2p_data *p2p = eloop_ctx; 1757 if (p2p->invite_peer == NULL) 1758 return; 1759 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1760 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1761 } 1762 1763 1764 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1765 const u8 *ie, size_t ie_len) 1766 { 1767 struct p2p_message msg; 1768 struct p2p_device *dev; 1769 1770 os_memset(&msg, 0, sizeof(msg)); 1771 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1772 { 1773 p2p_parse_free(&msg); 1774 return; /* not a P2P probe */ 1775 } 1776 1777 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1778 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1779 != 0) { 1780 /* The Probe Request is not part of P2P Device Discovery. It is 1781 * not known whether the source address of the frame is the P2P 1782 * Device Address or P2P Interface Address. Do not add a new 1783 * peer entry based on this frames. 1784 */ 1785 p2p_parse_free(&msg); 1786 return; 1787 } 1788 1789 dev = p2p_get_device(p2p, addr); 1790 if (dev) { 1791 if (dev->country[0] == 0 && msg.listen_channel) 1792 os_memcpy(dev->country, msg.listen_channel, 3); 1793 os_get_time(&dev->last_seen); 1794 p2p_parse_free(&msg); 1795 return; /* already known */ 1796 } 1797 1798 dev = p2p_create_device(p2p, addr); 1799 if (dev == NULL) { 1800 p2p_parse_free(&msg); 1801 return; 1802 } 1803 1804 os_get_time(&dev->last_seen); 1805 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1806 1807 if (msg.listen_channel) { 1808 os_memcpy(dev->country, msg.listen_channel, 3); 1809 dev->listen_freq = p2p_channel_to_freq(dev->country, 1810 msg.listen_channel[3], 1811 msg.listen_channel[4]); 1812 } 1813 1814 p2p_copy_wps_info(dev, 1, &msg); 1815 1816 if (msg.wfd_subelems) { 1817 wpabuf_free(dev->info.wfd_subelems); 1818 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1819 } 1820 1821 p2p_parse_free(&msg); 1822 1823 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1824 "P2P: Created device entry based on Probe Req: " MACSTR 1825 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1826 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1827 dev->info.group_capab, dev->info.device_name, 1828 dev->listen_freq); 1829 } 1830 1831 1832 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1833 const u8 *addr, 1834 struct p2p_message *msg) 1835 { 1836 struct p2p_device *dev; 1837 1838 dev = p2p_get_device(p2p, addr); 1839 if (dev) { 1840 os_get_time(&dev->last_seen); 1841 return dev; /* already known */ 1842 } 1843 1844 dev = p2p_create_device(p2p, addr); 1845 if (dev == NULL) 1846 return NULL; 1847 1848 p2p_add_dev_info(p2p, addr, dev, msg); 1849 1850 return dev; 1851 } 1852 1853 1854 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1855 { 1856 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1857 return 1; 1858 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1859 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1860 WPA_GET_BE16(&req_dev_type[6]) == 0) 1861 return 1; /* Category match with wildcard OUI/sub-category */ 1862 return 0; 1863 } 1864 1865 1866 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1867 size_t num_req_dev_type) 1868 { 1869 size_t i; 1870 for (i = 0; i < num_req_dev_type; i++) { 1871 if (dev_type_match(dev_type, req_dev_type[i])) 1872 return 1; 1873 } 1874 return 0; 1875 } 1876 1877 1878 /** 1879 * p2p_match_dev_type - Match local device type with requested type 1880 * @p2p: P2P module context from p2p_init() 1881 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1882 * Returns: 1 on match, 0 on mismatch 1883 * 1884 * This function can be used to match the Requested Device Type attribute in 1885 * WPS IE with the local device types for deciding whether to reply to a Probe 1886 * Request frame. 1887 */ 1888 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1889 { 1890 struct wps_parse_attr attr; 1891 size_t i; 1892 1893 if (wps_parse_msg(wps, &attr)) 1894 return 1; /* assume no Requested Device Type attributes */ 1895 1896 if (attr.num_req_dev_type == 0) 1897 return 1; /* no Requested Device Type attributes -> match */ 1898 1899 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1900 attr.num_req_dev_type)) 1901 return 1; /* Own Primary Device Type matches */ 1902 1903 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1904 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1905 attr.req_dev_type, 1906 attr.num_req_dev_type)) 1907 return 1; /* Own Secondary Device Type matches */ 1908 1909 /* No matching device type found */ 1910 return 0; 1911 } 1912 1913 1914 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1915 { 1916 struct wpabuf *buf; 1917 u8 *len; 1918 int pw_id = -1; 1919 size_t extra = 0; 1920 1921 #ifdef CONFIG_WIFI_DISPLAY 1922 if (p2p->wfd_ie_probe_resp) 1923 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1924 #endif /* CONFIG_WIFI_DISPLAY */ 1925 1926 buf = wpabuf_alloc(1000 + extra); 1927 if (buf == NULL) 1928 return NULL; 1929 1930 if (p2p->go_neg_peer) { 1931 /* Advertise immediate availability of WPS credential */ 1932 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1933 } 1934 1935 p2p_build_wps_ie(p2p, buf, pw_id, 1); 1936 1937 #ifdef CONFIG_WIFI_DISPLAY 1938 if (p2p->wfd_ie_probe_resp) 1939 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1940 #endif /* CONFIG_WIFI_DISPLAY */ 1941 1942 /* P2P IE */ 1943 len = p2p_buf_add_ie_hdr(buf); 1944 p2p_buf_add_capability(buf, p2p->dev_capab & 1945 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1946 if (p2p->ext_listen_interval) 1947 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1948 p2p->ext_listen_interval); 1949 p2p_buf_add_device_info(buf, p2p, NULL); 1950 p2p_buf_update_ie_hdr(buf, len); 1951 1952 return buf; 1953 } 1954 1955 1956 static int is_11b(u8 rate) 1957 { 1958 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16; 1959 } 1960 1961 1962 static int supp_rates_11b_only(struct ieee802_11_elems *elems) 1963 { 1964 int num_11b = 0, num_others = 0; 1965 int i; 1966 1967 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL) 1968 return 0; 1969 1970 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) { 1971 if (is_11b(elems->supp_rates[i])) 1972 num_11b++; 1973 else 1974 num_others++; 1975 } 1976 1977 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len; 1978 i++) { 1979 if (is_11b(elems->ext_supp_rates[i])) 1980 num_11b++; 1981 else 1982 num_others++; 1983 } 1984 1985 return num_11b > 0 && num_others == 0; 1986 } 1987 1988 1989 static enum p2p_probe_req_status 1990 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1991 const u8 *bssid, const u8 *ie, size_t ie_len) 1992 { 1993 struct ieee802_11_elems elems; 1994 struct wpabuf *buf; 1995 struct ieee80211_mgmt *resp; 1996 struct p2p_message msg; 1997 struct wpabuf *ies; 1998 1999 if (!p2p->in_listen || !p2p->drv_in_listen) { 2000 /* not in Listen state - ignore Probe Request */ 2001 return P2P_PREQ_NOT_LISTEN; 2002 } 2003 2004 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2005 ParseFailed) { 2006 /* Ignore invalid Probe Request frames */ 2007 return P2P_PREQ_MALFORMED; 2008 } 2009 2010 if (elems.p2p == NULL) { 2011 /* not a P2P probe - ignore it */ 2012 return P2P_PREQ_NOT_P2P; 2013 } 2014 2015 if (dst && !is_broadcast_ether_addr(dst) && 2016 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2017 /* Not sent to the broadcast address or our P2P Device Address 2018 */ 2019 return P2P_PREQ_NOT_PROCESSED; 2020 } 2021 2022 if (bssid && !is_broadcast_ether_addr(bssid)) { 2023 /* Not sent to the Wildcard BSSID */ 2024 return P2P_PREQ_NOT_PROCESSED; 2025 } 2026 2027 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2028 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2029 0) { 2030 /* not using P2P Wildcard SSID - ignore */ 2031 return P2P_PREQ_NOT_PROCESSED; 2032 } 2033 2034 if (supp_rates_11b_only(&elems)) { 2035 /* Indicates support for 11b rates only */ 2036 return P2P_PREQ_NOT_P2P; 2037 } 2038 2039 os_memset(&msg, 0, sizeof(msg)); 2040 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2041 /* Could not parse P2P attributes */ 2042 return P2P_PREQ_NOT_P2P; 2043 } 2044 2045 if (msg.device_id && 2046 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2047 /* Device ID did not match */ 2048 p2p_parse_free(&msg); 2049 return P2P_PREQ_NOT_PROCESSED; 2050 } 2051 2052 /* Check Requested Device Type match */ 2053 if (msg.wps_attributes && 2054 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2055 /* No match with Requested Device Type */ 2056 p2p_parse_free(&msg); 2057 return P2P_PREQ_NOT_PROCESSED; 2058 } 2059 p2p_parse_free(&msg); 2060 2061 if (!p2p->cfg->send_probe_resp) { 2062 /* Response generated elsewhere */ 2063 return P2P_PREQ_NOT_PROCESSED; 2064 } 2065 2066 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2067 "P2P: Reply to P2P Probe Request in Listen state"); 2068 2069 /* 2070 * We do not really have a specific BSS that this frame is advertising, 2071 * so build a frame that has some information in valid format. This is 2072 * really only used for discovery purposes, not to learn exact BSS 2073 * parameters. 2074 */ 2075 ies = p2p_build_probe_resp_ies(p2p); 2076 if (ies == NULL) 2077 return P2P_PREQ_NOT_PROCESSED; 2078 2079 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2080 if (buf == NULL) { 2081 wpabuf_free(ies); 2082 return P2P_PREQ_NOT_PROCESSED; 2083 } 2084 2085 resp = NULL; 2086 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2087 2088 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2089 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2090 os_memcpy(resp->da, addr, ETH_ALEN); 2091 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2092 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2093 resp->u.probe_resp.beacon_int = host_to_le16(100); 2094 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2095 resp->u.probe_resp.capab_info = 2096 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2097 WLAN_CAPABILITY_PRIVACY | 2098 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2099 2100 wpabuf_put_u8(buf, WLAN_EID_SSID); 2101 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2102 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2103 2104 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2105 wpabuf_put_u8(buf, 8); 2106 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2107 wpabuf_put_u8(buf, 90 / 5); 2108 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2109 wpabuf_put_u8(buf, 180 / 5); 2110 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2111 wpabuf_put_u8(buf, 360 / 5); 2112 wpabuf_put_u8(buf, 480 / 5); 2113 wpabuf_put_u8(buf, 540 / 5); 2114 2115 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2116 wpabuf_put_u8(buf, 1); 2117 wpabuf_put_u8(buf, p2p->cfg->channel); 2118 2119 wpabuf_put_buf(buf, ies); 2120 wpabuf_free(ies); 2121 2122 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2123 2124 wpabuf_free(buf); 2125 2126 return P2P_PREQ_NOT_PROCESSED; 2127 } 2128 2129 2130 enum p2p_probe_req_status 2131 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2132 const u8 *bssid, const u8 *ie, size_t ie_len) 2133 { 2134 enum p2p_probe_req_status res; 2135 2136 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2137 2138 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2139 2140 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2141 p2p->go_neg_peer && 2142 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2143 == 0) { 2144 /* Received a Probe Request from GO Negotiation peer */ 2145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2146 "P2P: Found GO Negotiation peer - try to start GO " 2147 "negotiation from timeout"); 2148 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2149 return P2P_PREQ_PROCESSED; 2150 } 2151 2152 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2153 p2p->invite_peer && 2154 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2155 == 0) { 2156 /* Received a Probe Request from Invite peer */ 2157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2158 "P2P: Found Invite peer - try to start Invite from " 2159 "timeout"); 2160 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2161 return P2P_PREQ_PROCESSED; 2162 } 2163 2164 return res; 2165 } 2166 2167 2168 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2169 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2170 { 2171 struct wpabuf *tmp; 2172 u8 *lpos; 2173 size_t tmplen; 2174 int res; 2175 u8 group_capab; 2176 2177 if (p2p_ie == NULL) 2178 return 0; /* WLAN AP is not a P2P manager */ 2179 2180 /* 2181 * (Re)Association Request - P2P IE 2182 * P2P Capability attribute (shall be present) 2183 * P2P Interface attribute (present if concurrent device and 2184 * P2P Management is enabled) 2185 */ 2186 tmp = wpabuf_alloc(200); 2187 if (tmp == NULL) 2188 return -1; 2189 2190 lpos = p2p_buf_add_ie_hdr(tmp); 2191 group_capab = 0; 2192 if (p2p->num_groups > 0) { 2193 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2194 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2195 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2196 p2p->cross_connect) 2197 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2198 } 2199 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2200 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2201 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2202 p2p_buf_add_p2p_interface(tmp, p2p); 2203 p2p_buf_update_ie_hdr(tmp, lpos); 2204 2205 tmplen = wpabuf_len(tmp); 2206 if (tmplen > len) 2207 res = -1; 2208 else { 2209 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2210 res = tmplen; 2211 } 2212 wpabuf_free(tmp); 2213 2214 return res; 2215 } 2216 2217 2218 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2219 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2220 { 2221 struct wpabuf *tmp; 2222 u8 *lpos; 2223 struct p2p_device *peer; 2224 size_t tmplen; 2225 int res; 2226 size_t extra = 0; 2227 2228 if (!p2p_group) 2229 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2230 2231 #ifdef CONFIG_WIFI_DISPLAY 2232 if (p2p->wfd_ie_assoc_req) 2233 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2234 #endif /* CONFIG_WIFI_DISPLAY */ 2235 2236 /* 2237 * (Re)Association Request - P2P IE 2238 * P2P Capability attribute (shall be present) 2239 * Extended Listen Timing (may be present) 2240 * P2P Device Info attribute (shall be present) 2241 */ 2242 tmp = wpabuf_alloc(200 + extra); 2243 if (tmp == NULL) 2244 return -1; 2245 2246 #ifdef CONFIG_WIFI_DISPLAY 2247 if (p2p->wfd_ie_assoc_req) 2248 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2249 #endif /* CONFIG_WIFI_DISPLAY */ 2250 2251 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2252 2253 lpos = p2p_buf_add_ie_hdr(tmp); 2254 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2255 if (p2p->ext_listen_interval) 2256 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2257 p2p->ext_listen_interval); 2258 p2p_buf_add_device_info(tmp, p2p, peer); 2259 p2p_buf_update_ie_hdr(tmp, lpos); 2260 2261 tmplen = wpabuf_len(tmp); 2262 if (tmplen > len) 2263 res = -1; 2264 else { 2265 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2266 res = tmplen; 2267 } 2268 wpabuf_free(tmp); 2269 2270 return res; 2271 } 2272 2273 2274 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2275 { 2276 struct wpabuf *p2p_ie; 2277 int ret; 2278 2279 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2280 if (p2p_ie == NULL) 2281 return 0; 2282 2283 ret = p2p_attr_text(p2p_ie, buf, end); 2284 wpabuf_free(p2p_ie); 2285 return ret; 2286 } 2287 2288 2289 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2290 { 2291 struct p2p_message msg; 2292 2293 os_memset(&msg, 0, sizeof(msg)); 2294 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2295 return -1; 2296 2297 if (msg.p2p_device_addr) { 2298 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2299 return 0; 2300 } else if (msg.device_id) { 2301 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2302 return 0; 2303 } 2304 return -1; 2305 } 2306 2307 2308 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2309 { 2310 struct wpabuf *p2p_ie; 2311 int ret; 2312 2313 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2314 P2P_IE_VENDOR_TYPE); 2315 if (p2p_ie == NULL) 2316 return -1; 2317 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2318 wpabuf_free(p2p_ie); 2319 return ret; 2320 } 2321 2322 2323 static void p2p_clear_go_neg(struct p2p_data *p2p) 2324 { 2325 p2p->go_neg_peer = NULL; 2326 p2p_clear_timeout(p2p); 2327 p2p_set_state(p2p, P2P_IDLE); 2328 } 2329 2330 2331 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2332 { 2333 if (p2p->go_neg_peer == NULL) { 2334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2335 "P2P: No pending Group Formation - " 2336 "ignore WPS registration success notification"); 2337 return; /* No pending Group Formation */ 2338 } 2339 2340 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2341 0) { 2342 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2343 "P2P: Ignore WPS registration success notification " 2344 "for " MACSTR " (GO Negotiation peer " MACSTR ")", 2345 MAC2STR(mac_addr), 2346 MAC2STR(p2p->go_neg_peer->intended_addr)); 2347 return; /* Ignore unexpected peer address */ 2348 } 2349 2350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2351 "P2P: Group Formation completed successfully with " MACSTR, 2352 MAC2STR(mac_addr)); 2353 2354 p2p_clear_go_neg(p2p); 2355 } 2356 2357 2358 void p2p_group_formation_failed(struct p2p_data *p2p) 2359 { 2360 if (p2p->go_neg_peer == NULL) { 2361 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2362 "P2P: No pending Group Formation - " 2363 "ignore group formation failure notification"); 2364 return; /* No pending Group Formation */ 2365 } 2366 2367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2368 "P2P: Group Formation failed with " MACSTR, 2369 MAC2STR(p2p->go_neg_peer->intended_addr)); 2370 2371 p2p_clear_go_neg(p2p); 2372 } 2373 2374 2375 struct p2p_data * p2p_init(const struct p2p_config *cfg) 2376 { 2377 struct p2p_data *p2p; 2378 2379 if (cfg->max_peers < 1) 2380 return NULL; 2381 2382 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2383 if (p2p == NULL) 2384 return NULL; 2385 p2p->cfg = (struct p2p_config *) (p2p + 1); 2386 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2387 if (cfg->dev_name) 2388 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2389 if (cfg->manufacturer) 2390 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2391 if (cfg->model_name) 2392 p2p->cfg->model_name = os_strdup(cfg->model_name); 2393 if (cfg->model_number) 2394 p2p->cfg->model_number = os_strdup(cfg->model_number); 2395 if (cfg->serial_number) 2396 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2397 if (cfg->pref_chan) { 2398 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2399 sizeof(struct p2p_channel)); 2400 if (p2p->cfg->pref_chan) { 2401 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2402 cfg->num_pref_chan * 2403 sizeof(struct p2p_channel)); 2404 } else 2405 p2p->cfg->num_pref_chan = 0; 2406 } 2407 2408 #ifdef ANDROID_P2P 2409 /* 100ms listen time is too less to receive the response frames in some scenarios 2410 * increasing min listen time to 200ms. 2411 */ 2412 p2p->min_disc_int = 2; 2413 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2414 p2p->sd_dev_list = NULL; 2415 #else 2416 p2p->min_disc_int = 1; 2417 #endif 2418 p2p->max_disc_int = 3; 2419 2420 os_get_random(&p2p->next_tie_breaker, 1); 2421 p2p->next_tie_breaker &= 0x01; 2422 if (cfg->sd_request) 2423 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2424 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2425 if (cfg->concurrent_operations) 2426 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2427 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2428 2429 dl_list_init(&p2p->devices); 2430 2431 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2432 p2p_expiration_timeout, p2p, NULL); 2433 2434 p2p->go_timeout = 100; 2435 p2p->client_timeout = 20; 2436 2437 return p2p; 2438 } 2439 2440 2441 void p2p_deinit(struct p2p_data *p2p) 2442 { 2443 #ifdef CONFIG_WIFI_DISPLAY 2444 wpabuf_free(p2p->wfd_ie_beacon); 2445 wpabuf_free(p2p->wfd_ie_probe_req); 2446 wpabuf_free(p2p->wfd_ie_probe_resp); 2447 wpabuf_free(p2p->wfd_ie_assoc_req); 2448 wpabuf_free(p2p->wfd_ie_invitation); 2449 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2450 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2451 wpabuf_free(p2p->wfd_ie_go_neg); 2452 wpabuf_free(p2p->wfd_dev_info); 2453 wpabuf_free(p2p->wfd_assoc_bssid); 2454 wpabuf_free(p2p->wfd_coupled_sink_info); 2455 #endif /* CONFIG_WIFI_DISPLAY */ 2456 2457 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2458 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2459 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2460 p2p_flush(p2p); 2461 p2p_free_req_dev_types(p2p); 2462 os_free(p2p->cfg->dev_name); 2463 os_free(p2p->cfg->manufacturer); 2464 os_free(p2p->cfg->model_name); 2465 os_free(p2p->cfg->model_number); 2466 os_free(p2p->cfg->serial_number); 2467 os_free(p2p->cfg->pref_chan); 2468 os_free(p2p->groups); 2469 wpabuf_free(p2p->sd_resp); 2470 os_free(p2p->after_scan_tx); 2471 p2p_remove_wps_vendor_extensions(p2p); 2472 os_free(p2p); 2473 } 2474 2475 2476 void p2p_flush(struct p2p_data *p2p) 2477 { 2478 struct p2p_device *dev, *prev; 2479 p2p_stop_find(p2p); 2480 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2481 list) { 2482 dl_list_del(&dev->list); 2483 p2p_device_free(p2p, dev); 2484 } 2485 #ifdef ANDROID_P2P 2486 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2487 p2p->sd_dev_list = NULL; 2488 #endif 2489 p2p_free_sd_queries(p2p); 2490 os_free(p2p->after_scan_tx); 2491 p2p->after_scan_tx = NULL; 2492 } 2493 2494 2495 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2496 { 2497 struct p2p_device *dev; 2498 2499 dev = p2p_get_device(p2p, addr); 2500 if (dev == NULL) 2501 return -1; 2502 2503 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR, 2504 MAC2STR(addr)); 2505 2506 if (p2p->go_neg_peer == dev) 2507 p2p->go_neg_peer = NULL; 2508 2509 dev->wps_method = WPS_NOT_READY; 2510 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2511 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2512 2513 /* Check if after_scan_tx is for this peer. If so free it */ 2514 if (p2p->after_scan_tx && 2515 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2516 os_free(p2p->after_scan_tx); 2517 p2p->after_scan_tx = NULL; 2518 } 2519 2520 return 0; 2521 } 2522 2523 2524 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2525 { 2526 os_free(p2p->cfg->dev_name); 2527 if (dev_name) { 2528 p2p->cfg->dev_name = os_strdup(dev_name); 2529 if (p2p->cfg->dev_name == NULL) 2530 return -1; 2531 } else 2532 p2p->cfg->dev_name = NULL; 2533 return 0; 2534 } 2535 2536 2537 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2538 { 2539 os_free(p2p->cfg->manufacturer); 2540 p2p->cfg->manufacturer = NULL; 2541 if (manufacturer) { 2542 p2p->cfg->manufacturer = os_strdup(manufacturer); 2543 if (p2p->cfg->manufacturer == NULL) 2544 return -1; 2545 } 2546 2547 return 0; 2548 } 2549 2550 2551 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2552 { 2553 os_free(p2p->cfg->model_name); 2554 p2p->cfg->model_name = NULL; 2555 if (model_name) { 2556 p2p->cfg->model_name = os_strdup(model_name); 2557 if (p2p->cfg->model_name == NULL) 2558 return -1; 2559 } 2560 2561 return 0; 2562 } 2563 2564 2565 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2566 { 2567 os_free(p2p->cfg->model_number); 2568 p2p->cfg->model_number = NULL; 2569 if (model_number) { 2570 p2p->cfg->model_number = os_strdup(model_number); 2571 if (p2p->cfg->model_number == NULL) 2572 return -1; 2573 } 2574 2575 return 0; 2576 } 2577 2578 2579 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2580 { 2581 os_free(p2p->cfg->serial_number); 2582 p2p->cfg->serial_number = NULL; 2583 if (serial_number) { 2584 p2p->cfg->serial_number = os_strdup(serial_number); 2585 if (p2p->cfg->serial_number == NULL) 2586 return -1; 2587 } 2588 2589 return 0; 2590 } 2591 2592 2593 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2594 { 2595 p2p->cfg->config_methods = config_methods; 2596 } 2597 2598 2599 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2600 { 2601 os_memcpy(p2p->cfg->uuid, uuid, 16); 2602 } 2603 2604 2605 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2606 { 2607 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2608 return 0; 2609 } 2610 2611 2612 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2613 size_t num_dev_types) 2614 { 2615 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2616 num_dev_types = P2P_SEC_DEVICE_TYPES; 2617 p2p->cfg->num_sec_dev_types = num_dev_types; 2618 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2619 return 0; 2620 } 2621 2622 2623 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2624 { 2625 int i; 2626 2627 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2628 wpabuf_free(p2p->wps_vendor_ext[i]); 2629 p2p->wps_vendor_ext[i] = NULL; 2630 } 2631 } 2632 2633 2634 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2635 const struct wpabuf *vendor_ext) 2636 { 2637 int i; 2638 2639 if (vendor_ext == NULL) 2640 return -1; 2641 2642 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2643 if (p2p->wps_vendor_ext[i] == NULL) 2644 break; 2645 } 2646 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2647 return -1; 2648 2649 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2650 if (p2p->wps_vendor_ext[i] == NULL) 2651 return -1; 2652 2653 return 0; 2654 } 2655 2656 2657 int p2p_set_country(struct p2p_data *p2p, const char *country) 2658 { 2659 os_memcpy(p2p->cfg->country, country, 3); 2660 return 0; 2661 } 2662 2663 2664 void p2p_continue_find(struct p2p_data *p2p) 2665 { 2666 struct p2p_device *dev; 2667 #ifdef ANDROID_P2P 2668 int skip=1; 2669 #endif 2670 p2p_set_state(p2p, P2P_SEARCH); 2671 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2672 #ifdef ANDROID_P2P 2673 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2674 * There may be a scenario, where a particular peer device have 2675 * not registered any query response. When we send a SD request to such device, 2676 * no response will be received. And if we continue to get probe responses from that device, 2677 * and if that device happens to be on top in our device list, 2678 * we will always continue to send SD requests always to that peer only. 2679 * We will not be able to send SD requests to other devices in that case. 2680 * This implementation keeps track of last serviced peer device. 2681 * And then takes the next one from the device list, in the next iteration. 2682 */ 2683 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2684 if(skip) { 2685 if ((&dev->list == p2p->sd_dev_list) ) { 2686 skip = 0; 2687 if (dev->list.next == &p2p->devices) 2688 p2p->sd_dev_list = NULL; 2689 } 2690 continue; 2691 } 2692 } 2693 p2p->sd_dev_list = &dev->list; 2694 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2695 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2696 MAC2STR(dev->info.p2p_device_addr)); 2697 #endif 2698 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2699 if (p2p_start_sd(p2p, dev) == 0) 2700 return; 2701 else 2702 break; 2703 } else if (dev->req_config_methods && 2704 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2705 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2706 "pending Provision Discovery Request to " 2707 MACSTR " (config methods 0x%x)", 2708 MAC2STR(dev->info.p2p_device_addr), 2709 dev->req_config_methods); 2710 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2711 return; 2712 } 2713 } 2714 2715 p2p_listen_in_find(p2p); 2716 } 2717 2718 2719 static void p2p_sd_cb(struct p2p_data *p2p, int success) 2720 { 2721 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2722 "P2P: Service Discovery Query TX callback: success=%d", 2723 success); 2724 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2725 2726 if (!success) { 2727 if (p2p->sd_peer) { 2728 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2729 p2p->sd_peer = NULL; 2730 } 2731 p2p_continue_find(p2p); 2732 return; 2733 } 2734 2735 if (p2p->sd_peer == NULL) { 2736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2737 "P2P: No SD peer entry known"); 2738 p2p_continue_find(p2p); 2739 return; 2740 } 2741 2742 /* Wait for response from the peer */ 2743 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2744 p2p_set_timeout(p2p, 0, 200000); 2745 } 2746 2747 2748 /** 2749 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2750 * @p2p: P2P module context from p2p_init() 2751 */ 2752 static void p2p_retry_pd(struct p2p_data *p2p) 2753 { 2754 struct p2p_device *dev; 2755 2756 if (p2p->state != P2P_IDLE) 2757 return; 2758 2759 /* 2760 * Retry the prov disc req attempt only for the peer that the user had 2761 * requested for and provided a join has not been initiated on it 2762 * in the meantime. 2763 */ 2764 2765 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2766 if (os_memcmp(p2p->pending_pd_devaddr, 2767 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2768 continue; 2769 if (!dev->req_config_methods) 2770 continue; 2771 if (dev->flags & P2P_DEV_PD_FOR_JOIN) 2772 continue; 2773 2774 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2775 "pending Provision Discovery Request to " 2776 MACSTR " (config methods 0x%x)", 2777 MAC2STR(dev->info.p2p_device_addr), 2778 dev->req_config_methods); 2779 p2p_send_prov_disc_req(p2p, dev, 0, 0); 2780 return; 2781 } 2782 } 2783 2784 2785 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2786 { 2787 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2788 "P2P: Provision Discovery Request TX callback: success=%d", 2789 success); 2790 2791 /* 2792 * Postpone resetting the pending action state till after we actually 2793 * time out. This allows us to take some action like notifying any 2794 * interested parties about no response to the request. 2795 * 2796 * When the timer (below) goes off we check in IDLE, SEARCH, or 2797 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2798 * requests in, if this was still pending and then raise notification. 2799 */ 2800 2801 if (!success) { 2802 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2803 2804 if (p2p->user_initiated_pd && 2805 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2806 { 2807 /* Retry request from timeout to avoid busy loops */ 2808 p2p->pending_action_state = P2P_PENDING_PD; 2809 p2p_set_timeout(p2p, 0, 50000); 2810 } else if (p2p->state != P2P_IDLE) 2811 p2p_continue_find(p2p); 2812 else if (p2p->user_initiated_pd) { 2813 p2p->pending_action_state = P2P_PENDING_PD; 2814 #ifdef ANDROID_P2P 2815 p2p_set_timeout(p2p, 0, 350000); 2816 #else 2817 p2p_set_timeout(p2p, 0, 300000); 2818 #endif 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 #ifdef ANDROID_P2P 2836 p2p_set_timeout(p2p, 0, 350000); 2837 #else 2838 p2p_set_timeout(p2p, 0, 200000); 2839 #endif 2840 } 2841 2842 2843 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2844 int level, const u8 *ies, size_t ies_len) 2845 { 2846 p2p_add_device(p2p, bssid, freq, level, ies, ies_len, 1); 2847 2848 return 0; 2849 } 2850 2851 2852 void p2p_scan_res_handled(struct p2p_data *p2p) 2853 { 2854 if (!p2p->p2p_scan_running) { 2855 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not " 2856 "running, but scan results received"); 2857 } 2858 p2p->p2p_scan_running = 0; 2859 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2860 2861 if (p2p_run_after_scan(p2p)) 2862 return; 2863 if (p2p->state == P2P_SEARCH) 2864 p2p_continue_find(p2p); 2865 } 2866 2867 2868 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2869 { 2870 u8 *len; 2871 2872 #ifdef CONFIG_WIFI_DISPLAY 2873 if (p2p->wfd_ie_probe_req) 2874 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2875 #endif /* CONFIG_WIFI_DISPLAY */ 2876 2877 len = p2p_buf_add_ie_hdr(ies); 2878 p2p_buf_add_capability(ies, p2p->dev_capab & 2879 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2880 if (dev_id) 2881 p2p_buf_add_device_id(ies, dev_id); 2882 if (p2p->cfg->reg_class && p2p->cfg->channel) 2883 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2884 p2p->cfg->reg_class, 2885 p2p->cfg->channel); 2886 if (p2p->ext_listen_interval) 2887 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2888 p2p->ext_listen_interval); 2889 /* TODO: p2p_buf_add_operating_channel() if GO */ 2890 p2p_buf_update_ie_hdr(ies, len); 2891 } 2892 2893 2894 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2895 { 2896 size_t len = 100; 2897 2898 #ifdef CONFIG_WIFI_DISPLAY 2899 if (p2p && p2p->wfd_ie_probe_req) 2900 len += wpabuf_len(p2p->wfd_ie_probe_req); 2901 #endif /* CONFIG_WIFI_DISPLAY */ 2902 2903 return len; 2904 } 2905 2906 2907 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2908 { 2909 return p2p_attr_text(p2p_ie, buf, end); 2910 } 2911 2912 2913 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2914 { 2915 struct p2p_device *dev = p2p->go_neg_peer; 2916 2917 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2918 "P2P: GO Negotiation Request TX callback: success=%d", 2919 success); 2920 2921 if (dev == NULL) { 2922 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2923 "P2P: No pending GO Negotiation"); 2924 return; 2925 } 2926 2927 if (success) { 2928 if (dev->flags & P2P_DEV_USER_REJECTED) { 2929 p2p_set_state(p2p, P2P_IDLE); 2930 return; 2931 } 2932 } else if (dev->go_neg_req_sent) { 2933 /* Cancel the increment from p2p_connect_send() on failure */ 2934 dev->go_neg_req_sent--; 2935 } 2936 2937 if (!success && 2938 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2939 !is_zero_ether_addr(dev->member_in_go_dev)) { 2940 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2941 "P2P: Peer " MACSTR " did not acknowledge request - " 2942 "try to use device discoverability through its GO", 2943 MAC2STR(dev->info.p2p_device_addr)); 2944 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2945 p2p_send_dev_disc_req(p2p, dev); 2946 return; 2947 } 2948 2949 /* 2950 * Use P2P find, if needed, to find the other device from its listen 2951 * channel. 2952 */ 2953 p2p_set_state(p2p, P2P_CONNECT); 2954 #ifdef ANDROID_P2P 2955 p2p_set_timeout(p2p, 0, 350000); 2956 #else 2957 p2p_set_timeout(p2p, 0, success ? 200000 : 100000); 2958 #endif 2959 } 2960 2961 2962 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2963 { 2964 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2965 "P2P: GO Negotiation Response TX callback: success=%d", 2966 success); 2967 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2968 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2969 "P2P: Ignore TX callback event - GO Negotiation is " 2970 "not running anymore"); 2971 return; 2972 } 2973 p2p_set_state(p2p, P2P_CONNECT); 2974 #ifdef ANDROID_P2P 2975 p2p_set_timeout(p2p, 0, 350000); 2976 #else 2977 p2p_set_timeout(p2p, 0, 250000); 2978 #endif 2979 } 2980 2981 2982 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success) 2983 { 2984 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2985 "P2P: GO Negotiation Response (failure) TX callback: " 2986 "success=%d", success); 2987 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2988 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2989 p2p->go_neg_peer->status); 2990 } 2991 } 2992 2993 2994 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 2995 enum p2p_send_action_result result) 2996 { 2997 struct p2p_device *dev; 2998 2999 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3000 "P2P: GO Negotiation Confirm TX callback: result=%d", 3001 result); 3002 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3003 if (result == P2P_SEND_ACTION_FAILED) { 3004 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3005 return; 3006 } 3007 if (result == P2P_SEND_ACTION_NO_ACK) { 3008 /* 3009 * It looks like the TX status for GO Negotiation Confirm is 3010 * often showing failure even when the peer has actually 3011 * received the frame. Since the peer may change channels 3012 * immediately after having received the frame, we may not see 3013 * an Ack for retries, so just dropping a single frame may 3014 * trigger this. To allow the group formation to succeed if the 3015 * peer did indeed receive the frame, continue regardless of 3016 * the TX status. 3017 */ 3018 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3019 "P2P: Assume GO Negotiation Confirm TX was actually " 3020 "received by the peer even though Ack was not " 3021 "reported"); 3022 } 3023 3024 dev = p2p->go_neg_peer; 3025 if (dev == NULL) 3026 return; 3027 3028 p2p_go_complete(p2p, dev); 3029 } 3030 3031 3032 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3033 const u8 *src, const u8 *bssid, 3034 enum p2p_send_action_result result) 3035 { 3036 enum p2p_pending_action_state state; 3037 int success; 3038 3039 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3040 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR 3041 " src=" MACSTR " bssid=" MACSTR " result=%d", 3042 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3043 MAC2STR(bssid), result); 3044 success = result == P2P_SEND_ACTION_SUCCESS; 3045 state = p2p->pending_action_state; 3046 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3047 switch (state) { 3048 case P2P_NO_PENDING_ACTION: 3049 break; 3050 case P2P_PENDING_GO_NEG_REQUEST: 3051 p2p_go_neg_req_cb(p2p, success); 3052 break; 3053 case P2P_PENDING_GO_NEG_RESPONSE: 3054 p2p_go_neg_resp_cb(p2p, success); 3055 break; 3056 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3057 p2p_go_neg_resp_failure_cb(p2p, success); 3058 break; 3059 case P2P_PENDING_GO_NEG_CONFIRM: 3060 p2p_go_neg_conf_cb(p2p, result); 3061 break; 3062 case P2P_PENDING_SD: 3063 p2p_sd_cb(p2p, success); 3064 break; 3065 case P2P_PENDING_PD: 3066 p2p_prov_disc_cb(p2p, success); 3067 break; 3068 case P2P_PENDING_INVITATION_REQUEST: 3069 p2p_invitation_req_cb(p2p, success); 3070 break; 3071 case P2P_PENDING_INVITATION_RESPONSE: 3072 p2p_invitation_resp_cb(p2p, success); 3073 break; 3074 case P2P_PENDING_DEV_DISC_REQUEST: 3075 p2p_dev_disc_req_cb(p2p, success); 3076 break; 3077 case P2P_PENDING_DEV_DISC_RESPONSE: 3078 p2p_dev_disc_resp_cb(p2p, success); 3079 break; 3080 case P2P_PENDING_GO_DISC_REQ: 3081 p2p_go_disc_req_cb(p2p, success); 3082 break; 3083 } 3084 } 3085 3086 3087 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3088 unsigned int duration) 3089 { 3090 if (freq == p2p->pending_client_disc_freq) { 3091 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3092 "P2P: Client discoverability remain-awake completed"); 3093 p2p->pending_client_disc_freq = 0; 3094 return; 3095 } 3096 3097 if (freq != p2p->pending_listen_freq) { 3098 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3099 "P2P: Unexpected listen callback for freq=%u " 3100 "duration=%u (pending_listen_freq=%u)", 3101 freq, duration, p2p->pending_listen_freq); 3102 return; 3103 } 3104 3105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3106 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on " 3107 "callback", 3108 p2p->pending_listen_sec, p2p->pending_listen_usec, 3109 p2p->pending_listen_freq); 3110 p2p->in_listen = 1; 3111 p2p->drv_in_listen = freq; 3112 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3113 /* 3114 * Add 20 msec extra wait to avoid race condition with driver 3115 * remain-on-channel end event, i.e., give driver more time to 3116 * complete the operation before our timeout expires. 3117 */ 3118 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3119 p2p->pending_listen_usec + 20000); 3120 } 3121 3122 p2p->pending_listen_freq = 0; 3123 } 3124 3125 3126 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3127 { 3128 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen " 3129 "state (freq=%u)", freq); 3130 p2p->drv_in_listen = 0; 3131 if (p2p->in_listen) 3132 return 0; /* Internal timeout will trigger the next step */ 3133 3134 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3135 if (p2p->go_neg_peer->connect_reqs >= 120) { 3136 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3137 "P2P: Timeout on sending GO Negotiation " 3138 "Request without getting response"); 3139 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3140 return 0; 3141 } 3142 3143 p2p_set_state(p2p, P2P_CONNECT); 3144 p2p_connect_send(p2p, p2p->go_neg_peer); 3145 return 1; 3146 } else if (p2p->state == P2P_SEARCH) { 3147 if (p2p->p2p_scan_running) { 3148 /* 3149 * Search is already in progress. This can happen if 3150 * an Action frame RX is reported immediately after 3151 * the end of a remain-on-channel operation and the 3152 * response frame to that is sent using an offchannel 3153 * operation while in p2p_find. Avoid an attempt to 3154 * restart a scan here. 3155 */ 3156 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan " 3157 "already in progress - do not try to start a " 3158 "new one"); 3159 return 1; 3160 } 3161 if (p2p->pending_listen_freq) { 3162 /* 3163 * Better wait a bit if the driver is unable to start 3164 * offchannel operation for some reason. p2p_search() 3165 * will be started from internal timeout. 3166 */ 3167 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen " 3168 "operation did not seem to start - delay " 3169 "search phase to avoid busy loop"); 3170 p2p_set_timeout(p2p, 0, 100000); 3171 return 1; 3172 } 3173 if (p2p->search_delay) { 3174 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3175 "search operation by %u ms", 3176 p2p->search_delay); 3177 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3178 (p2p->search_delay % 1000) * 1000); 3179 return 1; 3180 } 3181 p2p_search(p2p); 3182 return 1; 3183 } 3184 3185 return 0; 3186 } 3187 3188 3189 static void p2p_timeout_connect(struct p2p_data *p2p) 3190 { 3191 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3192 if (p2p->go_neg_peer && 3193 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3194 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO " 3195 "Negotiation Confirm timed out - assume GO " 3196 "Negotiation failed"); 3197 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3198 return; 3199 } 3200 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3201 p2p_listen_in_find(p2p); 3202 } 3203 3204 3205 static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3206 { 3207 if (p2p->go_neg_peer) { 3208 if (p2p->drv_in_listen) { 3209 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is " 3210 "still in Listen state; wait for it to " 3211 "complete"); 3212 return; 3213 } 3214 3215 if (p2p->go_neg_peer->connect_reqs >= 120) { 3216 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3217 "P2P: Timeout on sending GO Negotiation " 3218 "Request without getting response"); 3219 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3220 return; 3221 } 3222 3223 p2p_set_state(p2p, P2P_CONNECT); 3224 p2p_connect_send(p2p, p2p->go_neg_peer); 3225 } else 3226 p2p_set_state(p2p, P2P_IDLE); 3227 } 3228 3229 3230 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3231 { 3232 /* 3233 * TODO: could remain constantly in Listen state for some time if there 3234 * are no other concurrent uses for the radio. For now, go to listen 3235 * state once per second to give other uses a chance to use the radio. 3236 */ 3237 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3238 p2p_set_timeout(p2p, 0, 500000); 3239 } 3240 3241 3242 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3243 { 3244 struct p2p_device *dev = p2p->go_neg_peer; 3245 3246 if (dev == NULL) { 3247 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3248 "P2P: Unknown GO Neg peer - stop GO Neg wait"); 3249 return; 3250 } 3251 3252 dev->wait_count++; 3253 if (dev->wait_count >= 120) { 3254 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3255 "P2P: Timeout on waiting peer to become ready for GO " 3256 "Negotiation"); 3257 p2p_go_neg_failed(p2p, dev, -1); 3258 return; 3259 } 3260 3261 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3262 "P2P: Go to Listen state while waiting for the peer to become " 3263 "ready for GO Negotiation"); 3264 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3265 p2p_listen_in_find(p2p); 3266 } 3267 3268 3269 static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3270 { 3271 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3272 "P2P: Service Discovery Query timeout"); 3273 if (p2p->sd_peer) { 3274 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3275 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3276 p2p->sd_peer = NULL; 3277 } 3278 p2p_continue_find(p2p); 3279 } 3280 3281 3282 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3283 { 3284 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3285 "P2P: Provision Discovery Request timeout"); 3286 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3287 p2p_continue_find(p2p); 3288 } 3289 3290 3291 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3292 { 3293 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3294 3295 /* 3296 * For user initiated PD requests that we have not gotten any responses 3297 * for while in IDLE state, we retry them a couple of times before 3298 * giving up. 3299 */ 3300 if (!p2p->user_initiated_pd) 3301 return; 3302 3303 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3304 "P2P: User initiated Provision Discovery Request timeout"); 3305 3306 if (p2p->pd_retries) { 3307 p2p->pd_retries--; 3308 p2p_retry_pd(p2p); 3309 } else { 3310 if (p2p->cfg->prov_disc_fail) 3311 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3312 p2p->pending_pd_devaddr, 3313 P2P_PROV_DISC_TIMEOUT); 3314 p2p_reset_pending_pd(p2p); 3315 } 3316 } 3317 3318 3319 static void p2p_timeout_invite(struct p2p_data *p2p) 3320 { 3321 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3322 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3323 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3324 /* 3325 * Better remain on operating channel instead of listen channel 3326 * when running a group. 3327 */ 3328 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in " 3329 "active GO role - wait on operating channel"); 3330 p2p_set_timeout(p2p, 0, 100000); 3331 return; 3332 } 3333 p2p_listen_in_find(p2p); 3334 } 3335 3336 3337 static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3338 { 3339 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3340 p2p_set_state(p2p, P2P_INVITE); 3341 p2p_invite_send(p2p, p2p->invite_peer, 3342 p2p->invite_go_dev_addr); 3343 } else { 3344 if (p2p->invite_peer) { 3345 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3346 "P2P: Invitation Request retry limit reached"); 3347 if (p2p->cfg->invitation_result) 3348 p2p->cfg->invitation_result( 3349 p2p->cfg->cb_ctx, -1, NULL); 3350 } 3351 p2p_set_state(p2p, P2P_IDLE); 3352 } 3353 } 3354 3355 3356 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3357 { 3358 struct p2p_data *p2p = eloop_ctx; 3359 3360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)", 3361 p2p_state_txt(p2p->state)); 3362 3363 p2p->in_listen = 0; 3364 3365 switch (p2p->state) { 3366 case P2P_IDLE: 3367 /* Check if we timed out waiting for PD req */ 3368 if (p2p->pending_action_state == P2P_PENDING_PD) 3369 p2p_timeout_prov_disc_req(p2p); 3370 break; 3371 case P2P_SEARCH: 3372 /* Check if we timed out waiting for PD req */ 3373 if (p2p->pending_action_state == P2P_PENDING_PD) 3374 p2p_timeout_prov_disc_req(p2p); 3375 if (p2p->search_delay && !p2p->in_search_delay) { 3376 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3377 "search operation by %u ms", 3378 p2p->search_delay); 3379 p2p->in_search_delay = 1; 3380 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3381 (p2p->search_delay % 1000) * 1000); 3382 break; 3383 } 3384 p2p->in_search_delay = 0; 3385 p2p_search(p2p); 3386 break; 3387 case P2P_CONNECT: 3388 p2p_timeout_connect(p2p); 3389 break; 3390 case P2P_CONNECT_LISTEN: 3391 p2p_timeout_connect_listen(p2p); 3392 break; 3393 case P2P_GO_NEG: 3394 break; 3395 case P2P_LISTEN_ONLY: 3396 /* Check if we timed out waiting for PD req */ 3397 if (p2p->pending_action_state == P2P_PENDING_PD) 3398 p2p_timeout_prov_disc_req(p2p); 3399 3400 if (p2p->ext_listen_only) { 3401 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3402 "P2P: Extended Listen Timing - Listen State " 3403 "completed"); 3404 p2p->ext_listen_only = 0; 3405 p2p_set_state(p2p, P2P_IDLE); 3406 } 3407 break; 3408 case P2P_WAIT_PEER_CONNECT: 3409 p2p_timeout_wait_peer_connect(p2p); 3410 break; 3411 case P2P_WAIT_PEER_IDLE: 3412 p2p_timeout_wait_peer_idle(p2p); 3413 break; 3414 case P2P_SD_DURING_FIND: 3415 p2p_timeout_sd_during_find(p2p); 3416 break; 3417 case P2P_PROVISIONING: 3418 break; 3419 case P2P_PD_DURING_FIND: 3420 p2p_timeout_prov_disc_during_find(p2p); 3421 break; 3422 case P2P_INVITE: 3423 p2p_timeout_invite(p2p); 3424 break; 3425 case P2P_INVITE_LISTEN: 3426 p2p_timeout_invite_listen(p2p); 3427 break; 3428 case P2P_SEARCH_WHEN_READY: 3429 break; 3430 case P2P_CONTINUE_SEARCH_WHEN_READY: 3431 break; 3432 } 3433 } 3434 3435 3436 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3437 { 3438 struct p2p_device *dev; 3439 3440 dev = p2p_get_device(p2p, peer_addr); 3441 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject " 3442 "connection attempts by peer " MACSTR, MAC2STR(peer_addr)); 3443 if (dev == NULL) { 3444 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR 3445 " unknown", MAC2STR(peer_addr)); 3446 return -1; 3447 } 3448 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3449 dev->flags |= P2P_DEV_USER_REJECTED; 3450 return 0; 3451 } 3452 3453 3454 const char * p2p_wps_method_text(enum p2p_wps_method method) 3455 { 3456 switch (method) { 3457 case WPS_NOT_READY: 3458 return "not-ready"; 3459 case WPS_PIN_DISPLAY: 3460 return "Display"; 3461 case WPS_PIN_KEYPAD: 3462 return "Keypad"; 3463 case WPS_PBC: 3464 return "PBC"; 3465 } 3466 3467 return "??"; 3468 } 3469 3470 3471 static const char * p2p_go_state_text(enum p2p_go_state go_state) 3472 { 3473 switch (go_state) { 3474 case UNKNOWN_GO: 3475 return "unknown"; 3476 case LOCAL_GO: 3477 return "local"; 3478 case REMOTE_GO: 3479 return "remote"; 3480 } 3481 3482 return "??"; 3483 } 3484 3485 3486 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3487 const u8 *addr, int next) 3488 { 3489 struct p2p_device *dev; 3490 3491 if (addr) 3492 dev = p2p_get_device(p2p, addr); 3493 else 3494 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3495 3496 if (dev && next) { 3497 dev = dl_list_first(&dev->list, struct p2p_device, list); 3498 if (&dev->list == &p2p->devices) 3499 dev = NULL; 3500 } 3501 3502 if (dev == NULL) 3503 return NULL; 3504 3505 return &dev->info; 3506 } 3507 3508 3509 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3510 char *buf, size_t buflen) 3511 { 3512 struct p2p_device *dev; 3513 int res; 3514 char *pos, *end; 3515 struct os_time now; 3516 3517 if (info == NULL) 3518 return -1; 3519 3520 dev = (struct p2p_device *) (((u8 *) info) - 3521 offsetof(struct p2p_device, info)); 3522 3523 pos = buf; 3524 end = buf + buflen; 3525 3526 os_get_time(&now); 3527 res = os_snprintf(pos, end - pos, 3528 "age=%d\n" 3529 "listen_freq=%d\n" 3530 "wps_method=%s\n" 3531 "interface_addr=" MACSTR "\n" 3532 "member_in_go_dev=" MACSTR "\n" 3533 "member_in_go_iface=" MACSTR "\n" 3534 "go_neg_req_sent=%d\n" 3535 "go_state=%s\n" 3536 "dialog_token=%u\n" 3537 "intended_addr=" MACSTR "\n" 3538 "country=%c%c\n" 3539 "oper_freq=%d\n" 3540 "req_config_methods=0x%x\n" 3541 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3542 "status=%d\n" 3543 "wait_count=%u\n" 3544 "invitation_reqs=%u\n", 3545 (int) (now.sec - dev->last_seen.sec), 3546 dev->listen_freq, 3547 p2p_wps_method_text(dev->wps_method), 3548 MAC2STR(dev->interface_addr), 3549 MAC2STR(dev->member_in_go_dev), 3550 MAC2STR(dev->member_in_go_iface), 3551 dev->go_neg_req_sent, 3552 p2p_go_state_text(dev->go_state), 3553 dev->dialog_token, 3554 MAC2STR(dev->intended_addr), 3555 dev->country[0] ? dev->country[0] : '_', 3556 dev->country[1] ? dev->country[1] : '_', 3557 dev->oper_freq, 3558 dev->req_config_methods, 3559 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3560 "[PROBE_REQ_ONLY]" : "", 3561 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3562 dev->flags & P2P_DEV_NOT_YET_READY ? 3563 "[NOT_YET_READY]" : "", 3564 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3565 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3566 "", 3567 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3568 "[PD_PEER_DISPLAY]" : "", 3569 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3570 "[PD_PEER_KEYPAD]" : "", 3571 dev->flags & P2P_DEV_USER_REJECTED ? 3572 "[USER_REJECTED]" : "", 3573 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3574 "[PEER_WAITING_RESPONSE]" : "", 3575 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3576 "[PREFER_PERSISTENT_GROUP]" : "", 3577 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3578 "[WAIT_GO_NEG_RESPONSE]" : "", 3579 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3580 "[WAIT_GO_NEG_CONFIRM]" : "", 3581 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3582 "[GROUP_CLIENT_ONLY]" : "", 3583 dev->flags & P2P_DEV_FORCE_FREQ ? 3584 "[FORCE_FREQ]" : "", 3585 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3586 "[PD_FOR_JOIN]" : "", 3587 dev->status, 3588 dev->wait_count, 3589 dev->invitation_reqs); 3590 if (res < 0 || res >= end - pos) 3591 return pos - buf; 3592 pos += res; 3593 3594 if (dev->ext_listen_period) { 3595 res = os_snprintf(pos, end - pos, 3596 "ext_listen_period=%u\n" 3597 "ext_listen_interval=%u\n", 3598 dev->ext_listen_period, 3599 dev->ext_listen_interval); 3600 if (res < 0 || res >= end - pos) 3601 return pos - buf; 3602 pos += res; 3603 } 3604 3605 if (dev->oper_ssid_len) { 3606 res = os_snprintf(pos, end - pos, 3607 "oper_ssid=%s\n", 3608 wpa_ssid_txt(dev->oper_ssid, 3609 dev->oper_ssid_len)); 3610 if (res < 0 || res >= end - pos) 3611 return pos - buf; 3612 pos += res; 3613 } 3614 3615 #ifdef CONFIG_WIFI_DISPLAY 3616 if (dev->info.wfd_subelems) { 3617 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3618 if (res < 0 || res >= end - pos) 3619 return pos - buf; 3620 pos += res; 3621 3622 pos += wpa_snprintf_hex(pos, end - pos, 3623 wpabuf_head(dev->info.wfd_subelems), 3624 wpabuf_len(dev->info.wfd_subelems)); 3625 3626 res = os_snprintf(pos, end - pos, "\n"); 3627 if (res < 0 || res >= end - pos) 3628 return pos - buf; 3629 pos += res; 3630 } 3631 #endif /* CONFIG_WIFI_DISPLAY */ 3632 3633 return pos - buf; 3634 } 3635 3636 3637 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3638 { 3639 return p2p_get_device(p2p, addr) != NULL; 3640 } 3641 3642 3643 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3644 { 3645 if (enabled) { 3646 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3647 "discoverability enabled"); 3648 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3649 } else { 3650 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3651 "discoverability disabled"); 3652 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3653 } 3654 } 3655 3656 3657 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3658 u32 duration2, u32 interval2) 3659 { 3660 struct wpabuf *req; 3661 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3662 u8 *len; 3663 3664 req = wpabuf_alloc(100); 3665 if (req == NULL) 3666 return NULL; 3667 3668 if (duration1 || interval1) { 3669 os_memset(&desc1, 0, sizeof(desc1)); 3670 desc1.count_type = 1; 3671 desc1.duration = duration1; 3672 desc1.interval = interval1; 3673 ptr1 = &desc1; 3674 3675 if (duration2 || interval2) { 3676 os_memset(&desc2, 0, sizeof(desc2)); 3677 desc2.count_type = 2; 3678 desc2.duration = duration2; 3679 desc2.interval = interval2; 3680 ptr2 = &desc2; 3681 } 3682 } 3683 3684 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3685 len = p2p_buf_add_ie_hdr(req); 3686 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3687 p2p_buf_update_ie_hdr(req, len); 3688 3689 return req; 3690 } 3691 3692 3693 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3694 const u8 *own_interface_addr, unsigned int freq, 3695 u32 duration1, u32 interval1, u32 duration2, 3696 u32 interval2) 3697 { 3698 struct wpabuf *req; 3699 3700 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to " 3701 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u " 3702 "int1=%u dur2=%u int2=%u", 3703 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3704 freq, duration1, interval1, duration2, interval2); 3705 3706 req = p2p_build_presence_req(duration1, interval1, duration2, 3707 interval2); 3708 if (req == NULL) 3709 return -1; 3710 3711 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3712 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3713 go_interface_addr, 3714 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3715 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3716 "P2P: Failed to send Action frame"); 3717 } 3718 wpabuf_free(req); 3719 3720 return 0; 3721 } 3722 3723 3724 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3725 size_t noa_len, u8 dialog_token) 3726 { 3727 struct wpabuf *resp; 3728 u8 *len; 3729 3730 resp = wpabuf_alloc(100 + noa_len); 3731 if (resp == NULL) 3732 return NULL; 3733 3734 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3735 len = p2p_buf_add_ie_hdr(resp); 3736 p2p_buf_add_status(resp, status); 3737 if (noa) { 3738 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3739 wpabuf_put_le16(resp, noa_len); 3740 wpabuf_put_data(resp, noa, noa_len); 3741 } else 3742 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3743 p2p_buf_update_ie_hdr(resp, len); 3744 3745 return resp; 3746 } 3747 3748 3749 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3750 const u8 *sa, const u8 *data, size_t len, 3751 int rx_freq) 3752 { 3753 struct p2p_message msg; 3754 u8 status; 3755 struct wpabuf *resp; 3756 size_t g; 3757 struct p2p_group *group = NULL; 3758 int parsed = 0; 3759 u8 noa[50]; 3760 int noa_len; 3761 3762 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3763 "P2P: Received P2P Action - P2P Presence Request"); 3764 3765 for (g = 0; g < p2p->num_groups; g++) { 3766 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3767 ETH_ALEN) == 0) { 3768 group = p2p->groups[g]; 3769 break; 3770 } 3771 } 3772 if (group == NULL) { 3773 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3774 "P2P: Ignore P2P Presence Request for unknown group " 3775 MACSTR, MAC2STR(da)); 3776 return; 3777 } 3778 3779 if (p2p_parse(data, len, &msg) < 0) { 3780 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3781 "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 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3789 "P2P: No NoA attribute in P2P Presence Request"); 3790 status = P2P_SC_FAIL_INVALID_PARAMS; 3791 goto fail; 3792 } 3793 3794 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3795 3796 fail: 3797 if (p2p->cfg->get_noa) 3798 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3799 sizeof(noa)); 3800 else 3801 noa_len = -1; 3802 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3803 noa_len > 0 ? noa_len : 0, 3804 msg.dialog_token); 3805 if (parsed) 3806 p2p_parse_free(&msg); 3807 if (resp == NULL) 3808 return; 3809 3810 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3811 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3812 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3813 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3814 "P2P: Failed to send Action frame"); 3815 } 3816 wpabuf_free(resp); 3817 } 3818 3819 3820 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3821 const u8 *sa, const u8 *data, size_t len) 3822 { 3823 struct p2p_message msg; 3824 3825 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3826 "P2P: Received P2P Action - P2P Presence Response"); 3827 3828 if (p2p_parse(data, len, &msg) < 0) { 3829 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3830 "P2P: Failed to parse P2P Presence Response"); 3831 return; 3832 } 3833 3834 if (msg.status == NULL || msg.noa == NULL) { 3835 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3836 "P2P: No Status or NoA attribute in P2P Presence " 3837 "Response"); 3838 p2p_parse_free(&msg); 3839 return; 3840 } 3841 3842 if (*msg.status) { 3843 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3844 "P2P: P2P Presence Request was rejected: status %u", 3845 *msg.status); 3846 p2p_parse_free(&msg); 3847 return; 3848 } 3849 3850 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3851 "P2P: P2P Presence Request was accepted"); 3852 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3853 msg.noa, msg.noa_len); 3854 /* TODO: process NoA */ 3855 p2p_parse_free(&msg); 3856 } 3857 3858 3859 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3860 { 3861 struct p2p_data *p2p = eloop_ctx; 3862 3863 if (p2p->ext_listen_interval) { 3864 /* Schedule next extended listen timeout */ 3865 eloop_register_timeout(p2p->ext_listen_interval_sec, 3866 p2p->ext_listen_interval_usec, 3867 p2p_ext_listen_timeout, p2p, NULL); 3868 } 3869 3870 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3871 /* 3872 * This should not really happen, but it looks like the Listen 3873 * command may fail is something else (e.g., a scan) was 3874 * running at an inconvenient time. As a workaround, allow new 3875 * Extended Listen operation to be started. 3876 */ 3877 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous " 3878 "Extended Listen operation had not been completed - " 3879 "try again"); 3880 p2p->ext_listen_only = 0; 3881 p2p_set_state(p2p, P2P_IDLE); 3882 } 3883 3884 if (p2p->state != P2P_IDLE) { 3885 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended " 3886 "Listen timeout in active state (%s)", 3887 p2p_state_txt(p2p->state)); 3888 return; 3889 } 3890 3891 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout"); 3892 p2p->ext_listen_only = 1; 3893 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3894 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 3895 "Listen state for Extended Listen Timing"); 3896 p2p->ext_listen_only = 0; 3897 } 3898 } 3899 3900 3901 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3902 unsigned int interval) 3903 { 3904 if (period > 65535 || interval > 65535 || period > interval || 3905 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3906 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3907 "P2P: Invalid Extended Listen Timing request: " 3908 "period=%u interval=%u", period, interval); 3909 return -1; 3910 } 3911 3912 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3913 3914 if (interval == 0) { 3915 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3916 "P2P: Disabling Extended Listen Timing"); 3917 p2p->ext_listen_period = 0; 3918 p2p->ext_listen_interval = 0; 3919 return 0; 3920 } 3921 3922 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3923 "P2P: Enabling Extended Listen Timing: period %u msec, " 3924 "interval %u msec", period, interval); 3925 p2p->ext_listen_period = period; 3926 p2p->ext_listen_interval = interval; 3927 p2p->ext_listen_interval_sec = interval / 1000; 3928 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3929 3930 eloop_register_timeout(p2p->ext_listen_interval_sec, 3931 p2p->ext_listen_interval_usec, 3932 p2p_ext_listen_timeout, p2p, NULL); 3933 3934 return 0; 3935 } 3936 3937 3938 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3939 const u8 *ie, size_t ie_len) 3940 { 3941 struct p2p_message msg; 3942 3943 if (bssid == NULL || ie == NULL) 3944 return; 3945 3946 os_memset(&msg, 0, sizeof(msg)); 3947 if (p2p_parse_ies(ie, ie_len, &msg)) 3948 return; 3949 if (msg.minor_reason_code == NULL) 3950 return; 3951 3952 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3953 "P2P: Deauthentication notification BSSID " MACSTR 3954 " reason_code=%u minor_reason_code=%u", 3955 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3956 3957 p2p_parse_free(&msg); 3958 } 3959 3960 3961 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3962 const u8 *ie, size_t ie_len) 3963 { 3964 struct p2p_message msg; 3965 3966 if (bssid == NULL || ie == NULL) 3967 return; 3968 3969 os_memset(&msg, 0, sizeof(msg)); 3970 if (p2p_parse_ies(ie, ie_len, &msg)) 3971 return; 3972 if (msg.minor_reason_code == NULL) 3973 return; 3974 3975 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3976 "P2P: Disassociation notification BSSID " MACSTR 3977 " reason_code=%u minor_reason_code=%u", 3978 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3979 3980 p2p_parse_free(&msg); 3981 } 3982 3983 3984 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 3985 { 3986 if (enabled) { 3987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 3988 "Device operations enabled"); 3989 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 3990 } else { 3991 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 3992 "Device operations disabled"); 3993 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 3994 } 3995 } 3996 3997 3998 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 3999 { 4000 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0) 4001 return -1; 4002 4003 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: " 4004 "reg_class %u channel %u", reg_class, channel); 4005 p2p->cfg->reg_class = reg_class; 4006 p2p->cfg->channel = channel; 4007 4008 return 0; 4009 } 4010 4011 4012 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4013 { 4014 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len); 4015 if (postfix == NULL) { 4016 p2p->cfg->ssid_postfix_len = 0; 4017 return 0; 4018 } 4019 if (len > sizeof(p2p->cfg->ssid_postfix)) 4020 return -1; 4021 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4022 p2p->cfg->ssid_postfix_len = len; 4023 return 0; 4024 } 4025 4026 4027 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4028 int cfg_op_channel) 4029 { 4030 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel) 4031 < 0) 4032 return -1; 4033 4034 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: " 4035 "reg_class %u channel %u", op_reg_class, op_channel); 4036 p2p->cfg->op_reg_class = op_reg_class; 4037 p2p->cfg->op_channel = op_channel; 4038 p2p->cfg->cfg_op_channel = cfg_op_channel; 4039 return 0; 4040 } 4041 4042 4043 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4044 const struct p2p_channel *pref_chan) 4045 { 4046 struct p2p_channel *n; 4047 4048 if (pref_chan) { 4049 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4050 if (n == NULL) 4051 return -1; 4052 os_memcpy(n, pref_chan, 4053 num_pref_chan * sizeof(struct p2p_channel)); 4054 } else 4055 n = NULL; 4056 4057 os_free(p2p->cfg->pref_chan); 4058 p2p->cfg->pref_chan = n; 4059 p2p->cfg->num_pref_chan = num_pref_chan; 4060 4061 return 0; 4062 } 4063 4064 4065 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4066 u8 *iface_addr) 4067 { 4068 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4069 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4070 return -1; 4071 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4072 return 0; 4073 } 4074 4075 4076 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4077 u8 *dev_addr) 4078 { 4079 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4080 if (dev == NULL) 4081 return -1; 4082 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4083 return 0; 4084 } 4085 4086 4087 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4088 { 4089 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4090 if (is_zero_ether_addr(p2p->peer_filter)) 4091 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer " 4092 "filter"); 4093 else 4094 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer " 4095 "filter for " MACSTR, MAC2STR(p2p->peer_filter)); 4096 } 4097 4098 4099 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4100 { 4101 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s", 4102 enabled ? "enabled" : "disabled"); 4103 if (p2p->cross_connect == enabled) 4104 return; 4105 p2p->cross_connect = enabled; 4106 /* TODO: may need to tear down any action group where we are GO(?) */ 4107 } 4108 4109 4110 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4111 { 4112 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4113 if (dev == NULL) 4114 return -1; 4115 if (dev->oper_freq <= 0) 4116 return -1; 4117 return dev->oper_freq; 4118 } 4119 4120 4121 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4122 { 4123 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s", 4124 enabled ? "enabled" : "disabled"); 4125 p2p->cfg->p2p_intra_bss = enabled; 4126 } 4127 4128 4129 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4130 { 4131 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list"); 4132 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4133 } 4134 4135 4136 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4137 const u8 *src, const u8 *bssid, const u8 *buf, 4138 size_t len, unsigned int wait_time) 4139 { 4140 if (p2p->p2p_scan_running) { 4141 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action " 4142 "frame TX until p2p_scan completes"); 4143 if (p2p->after_scan_tx) { 4144 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 4145 "previous pending Action frame TX"); 4146 os_free(p2p->after_scan_tx); 4147 } 4148 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4149 len); 4150 if (p2p->after_scan_tx == NULL) 4151 return -1; 4152 p2p->after_scan_tx->freq = freq; 4153 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4154 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4155 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4156 p2p->after_scan_tx->len = len; 4157 p2p->after_scan_tx->wait_time = wait_time; 4158 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4159 return 0; 4160 } 4161 4162 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4163 buf, len, wait_time); 4164 } 4165 4166 4167 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4168 int freq_overall) 4169 { 4170 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d," 4171 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall); 4172 p2p->best_freq_24 = freq_24; 4173 p2p->best_freq_5 = freq_5; 4174 p2p->best_freq_overall = freq_overall; 4175 } 4176 4177 4178 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4179 { 4180 if (p2p == NULL || p2p->go_neg_peer == NULL) 4181 return NULL; 4182 return p2p->go_neg_peer->info.p2p_device_addr; 4183 } 4184 4185 4186 const struct p2p_peer_info * 4187 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4188 { 4189 struct p2p_device *dev; 4190 4191 if (addr) { 4192 dev = p2p_get_device(p2p, addr); 4193 if (!dev) 4194 return NULL; 4195 4196 if (!next) { 4197 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4198 return NULL; 4199 4200 return &dev->info; 4201 } else { 4202 do { 4203 dev = dl_list_first(&dev->list, 4204 struct p2p_device, 4205 list); 4206 if (&dev->list == &p2p->devices) 4207 return NULL; 4208 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4209 } 4210 } else { 4211 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4212 if (!dev) 4213 return NULL; 4214 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4215 dev = dl_list_first(&dev->list, 4216 struct p2p_device, 4217 list); 4218 if (&dev->list == &p2p->devices) 4219 return NULL; 4220 } 4221 } 4222 4223 return &dev->info; 4224 } 4225 4226 #ifdef ANDROID_P2P 4227 int p2p_search_in_progress(struct p2p_data *p2p) 4228 { 4229 if (p2p == NULL) 4230 return 0; 4231 4232 return p2p->state == P2P_SEARCH; 4233 } 4234 #endif 4235 4236 int p2p_in_progress(struct p2p_data *p2p) 4237 { 4238 if (p2p == NULL) 4239 return 0; 4240 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4241 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4242 return 2; 4243 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4244 } 4245 4246 4247 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4248 u8 client_timeout) 4249 { 4250 if (p2p) { 4251 p2p->go_timeout = go_timeout; 4252 p2p->client_timeout = client_timeout; 4253 } 4254 } 4255 4256 4257 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4258 { 4259 if (p2p && p2p->search_delay < delay) 4260 p2p->search_delay = delay; 4261 } 4262 4263 4264 #ifdef CONFIG_WIFI_DISPLAY 4265 4266 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4267 { 4268 size_t g; 4269 struct p2p_group *group; 4270 4271 for (g = 0; g < p2p->num_groups; g++) { 4272 group = p2p->groups[g]; 4273 p2p_group_update_ies(group); 4274 } 4275 } 4276 4277 4278 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4279 { 4280 wpabuf_free(p2p->wfd_ie_beacon); 4281 p2p->wfd_ie_beacon = ie; 4282 p2p_update_wfd_ie_groups(p2p); 4283 return 0; 4284 } 4285 4286 4287 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4288 { 4289 wpabuf_free(p2p->wfd_ie_probe_req); 4290 p2p->wfd_ie_probe_req = ie; 4291 return 0; 4292 } 4293 4294 4295 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4296 { 4297 wpabuf_free(p2p->wfd_ie_probe_resp); 4298 p2p->wfd_ie_probe_resp = ie; 4299 p2p_update_wfd_ie_groups(p2p); 4300 return 0; 4301 } 4302 4303 4304 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4305 { 4306 wpabuf_free(p2p->wfd_ie_assoc_req); 4307 p2p->wfd_ie_assoc_req = ie; 4308 return 0; 4309 } 4310 4311 4312 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4313 { 4314 wpabuf_free(p2p->wfd_ie_invitation); 4315 p2p->wfd_ie_invitation = ie; 4316 return 0; 4317 } 4318 4319 4320 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4321 { 4322 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4323 p2p->wfd_ie_prov_disc_req = ie; 4324 return 0; 4325 } 4326 4327 4328 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4329 { 4330 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4331 p2p->wfd_ie_prov_disc_resp = ie; 4332 return 0; 4333 } 4334 4335 4336 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4337 { 4338 wpabuf_free(p2p->wfd_ie_go_neg); 4339 p2p->wfd_ie_go_neg = ie; 4340 return 0; 4341 } 4342 4343 4344 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4345 { 4346 wpabuf_free(p2p->wfd_dev_info); 4347 if (elem) { 4348 p2p->wfd_dev_info = wpabuf_dup(elem); 4349 if (p2p->wfd_dev_info == NULL) 4350 return -1; 4351 } else 4352 p2p->wfd_dev_info = NULL; 4353 4354 return 0; 4355 } 4356 4357 4358 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4359 { 4360 wpabuf_free(p2p->wfd_assoc_bssid); 4361 if (elem) { 4362 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4363 if (p2p->wfd_assoc_bssid == NULL) 4364 return -1; 4365 } else 4366 p2p->wfd_assoc_bssid = NULL; 4367 4368 return 0; 4369 } 4370 4371 4372 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4373 const struct wpabuf *elem) 4374 { 4375 wpabuf_free(p2p->wfd_coupled_sink_info); 4376 if (elem) { 4377 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4378 if (p2p->wfd_coupled_sink_info == NULL) 4379 return -1; 4380 } else 4381 p2p->wfd_coupled_sink_info = NULL; 4382 4383 return 0; 4384 } 4385 4386 #endif /* CONFIG_WIFI_DISPLAY */ 4387
