1 /* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/ieee802_11_defs.h" 14 #include "common/ieee802_11_common.h" 15 #include "wps/wps_i.h" 16 #include "p2p_i.h" 17 #include "p2p.h" 18 19 20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 23 const u8 *sa, const u8 *data, size_t len, 24 int rx_freq); 25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 26 const u8 *sa, const u8 *data, 27 size_t len); 28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 30 31 32 /* 33 * p2p_scan recovery timeout 34 * 35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 36 * timeout for this to avoid hitting P2P timeout unnecessarily. 37 */ 38 #define P2P_SCAN_TIMEOUT 35 39 40 /** 41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 42 * entries will be removed 43 */ 44 #ifdef ANDROID_P2P 45 #define P2P_PEER_EXPIRATION_AGE 30 46 #else 47 #define P2P_PEER_EXPIRATION_AGE 300 48 #endif 49 50 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2) 51 52 #ifdef ANDROID_P2P 53 int p2p_connection_in_progress(struct p2p_data *p2p) 54 { 55 int ret = 0; 56 57 switch (p2p->state) { 58 case P2P_CONNECT: 59 case P2P_CONNECT_LISTEN: 60 case P2P_GO_NEG: 61 case P2P_WAIT_PEER_CONNECT: 62 case P2P_WAIT_PEER_IDLE: 63 case P2P_PROVISIONING: 64 case P2P_INVITE: 65 case P2P_INVITE_LISTEN: 66 ret = 1; 67 break; 68 69 default: 70 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state); 71 ret = 0; 72 } 73 74 return ret; 75 } 76 #endif 77 78 static void p2p_expire_peers(struct p2p_data *p2p) 79 { 80 struct p2p_device *dev, *n; 81 struct os_time now; 82 size_t i; 83 84 os_get_time(&now); 85 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 86 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 87 continue; 88 89 if (p2p->cfg->go_connected && 90 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 91 dev->info.p2p_device_addr)) { 92 /* 93 * We are connected as a client to a group in which the 94 * peer is the GO, so do not expire the peer entry. 95 */ 96 os_get_time(&dev->last_seen); 97 continue; 98 } 99 100 for (i = 0; i < p2p->num_groups; i++) { 101 if (p2p_group_is_client_connected( 102 p2p->groups[i], dev->info.p2p_device_addr)) 103 break; 104 } 105 if (i < p2p->num_groups) { 106 /* 107 * The peer is connected as a client in a group where 108 * we are the GO, so do not expire the peer entry. 109 */ 110 os_get_time(&dev->last_seen); 111 continue; 112 } 113 114 #ifdef ANDROID_P2P 115 /* If Connection is in progress, don't expire the peer 116 */ 117 if (p2p_connection_in_progress(p2p)) 118 continue; 119 #endif 120 121 p2p_dbg(p2p, "Expiring old peer entry " MACSTR, 122 MAC2STR(dev->info.p2p_device_addr)); 123 124 #ifdef ANDROID_P2P 125 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 126 if(&dev->list == p2p->sd_dev_list) 127 p2p->sd_dev_list = dev->list.next; 128 #endif 129 dl_list_del(&dev->list); 130 p2p_device_free(p2p, dev); 131 } 132 } 133 134 135 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 const char * p2p_get_state_txt(struct p2p_data *p2p) 184 { 185 return p2p_state_txt(p2p->state); 186 } 187 188 189 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 190 { 191 struct p2p_device *dev = NULL; 192 193 if (!addr || !p2p) 194 return 0; 195 196 dev = p2p_get_device(p2p, addr); 197 if (dev) 198 return dev->wps_prov_info; 199 else 200 return 0; 201 } 202 203 204 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 205 { 206 struct p2p_device *dev = NULL; 207 208 if (!addr || !p2p) 209 return; 210 211 dev = p2p_get_device(p2p, addr); 212 if (dev) 213 dev->wps_prov_info = 0; 214 } 215 216 217 void p2p_set_state(struct p2p_data *p2p, int new_state) 218 { 219 p2p_dbg(p2p, "State %s -> %s", 220 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 221 p2p->state = new_state; 222 } 223 224 225 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 226 { 227 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec", 228 p2p_state_txt(p2p->state), sec, usec); 229 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 230 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 231 } 232 233 234 void p2p_clear_timeout(struct p2p_data *p2p) 235 { 236 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state)); 237 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 238 } 239 240 241 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, 242 int status) 243 { 244 struct p2p_go_neg_results res; 245 p2p_clear_timeout(p2p); 246 p2p_set_state(p2p, P2P_IDLE); 247 if (p2p->go_neg_peer) { 248 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 249 p2p->go_neg_peer->wps_method = WPS_NOT_READY; 250 } 251 p2p->go_neg_peer = NULL; 252 253 os_memset(&res, 0, sizeof(res)); 254 res.status = status; 255 if (peer) { 256 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 257 ETH_ALEN); 258 os_memcpy(res.peer_interface_addr, peer->intended_addr, 259 ETH_ALEN); 260 } 261 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 262 } 263 264 265 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 266 { 267 unsigned int r, tu; 268 int freq; 269 struct wpabuf *ies; 270 271 p2p_dbg(p2p, "Starting short listen state (state=%s)", 272 p2p_state_txt(p2p->state)); 273 274 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 275 if (freq < 0) { 276 p2p_dbg(p2p, "Unknown regulatory class/channel"); 277 return; 278 } 279 280 os_get_random((u8 *) &r, sizeof(r)); 281 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 282 p2p->min_disc_int) * 100; 283 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 284 tu = p2p->max_disc_tu; 285 if (!dev_disc && tu < 100) 286 tu = 100; /* Need to wait in non-device discovery use cases */ 287 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 288 tu = p2p->cfg->max_listen * 1000 / 1024; 289 290 if (tu == 0) { 291 p2p_dbg(p2p, "Skip listen state since duration was 0 TU"); 292 p2p_set_timeout(p2p, 0, 0); 293 return; 294 } 295 296 p2p->pending_listen_freq = freq; 297 p2p->pending_listen_sec = 0; 298 p2p->pending_listen_usec = 1024 * tu; 299 300 ies = p2p_build_probe_resp_ies(p2p); 301 if (ies == NULL) 302 return; 303 304 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 305 ies) < 0) { 306 p2p_dbg(p2p, "Failed to start listen mode"); 307 p2p->pending_listen_freq = 0; 308 } 309 wpabuf_free(ies); 310 } 311 312 313 int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 314 { 315 int freq; 316 struct wpabuf *ies; 317 318 p2p_dbg(p2p, "Going to listen(only) state"); 319 320 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 321 if (freq < 0) { 322 p2p_dbg(p2p, "Unknown regulatory class/channel"); 323 return -1; 324 } 325 326 p2p->pending_listen_freq = freq; 327 p2p->pending_listen_sec = timeout / 1000; 328 p2p->pending_listen_usec = (timeout % 1000) * 1000; 329 330 if (p2p->p2p_scan_running) { 331 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 332 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen"); 333 return 0; 334 } 335 p2p_dbg(p2p, "p2p_scan running - delay start of listen state"); 336 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 337 return 0; 338 } 339 340 ies = p2p_build_probe_resp_ies(p2p); 341 if (ies == NULL) 342 return -1; 343 344 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 345 p2p_dbg(p2p, "Failed to start listen mode"); 346 p2p->pending_listen_freq = 0; 347 wpabuf_free(ies); 348 return -1; 349 } 350 wpabuf_free(ies); 351 352 p2p_set_state(p2p, P2P_LISTEN_ONLY); 353 354 return 0; 355 } 356 357 358 static void p2p_device_clear_reported(struct p2p_data *p2p) 359 { 360 struct p2p_device *dev; 361 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 362 dev->flags &= ~P2P_DEV_REPORTED; 363 } 364 365 366 /** 367 * p2p_get_device - Fetch a peer entry 368 * @p2p: P2P module context from p2p_init() 369 * @addr: P2P Device Address of the peer 370 * Returns: Pointer to the device entry or %NULL if not found 371 */ 372 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 373 { 374 struct p2p_device *dev; 375 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 376 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 377 return dev; 378 } 379 return NULL; 380 } 381 382 383 /** 384 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 385 * @p2p: P2P module context from p2p_init() 386 * @addr: P2P Interface Address of the peer 387 * Returns: Pointer to the device entry or %NULL if not found 388 */ 389 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 390 const u8 *addr) 391 { 392 struct p2p_device *dev; 393 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 394 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 395 return dev; 396 } 397 return NULL; 398 } 399 400 401 /** 402 * p2p_create_device - Create a peer entry 403 * @p2p: P2P module context from p2p_init() 404 * @addr: P2P Device Address of the peer 405 * Returns: Pointer to the device entry or %NULL on failure 406 * 407 * If there is already an entry for the peer, it will be returned instead of 408 * creating a new one. 409 */ 410 static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 411 const u8 *addr) 412 { 413 struct p2p_device *dev, *oldest = NULL; 414 size_t count = 0; 415 416 dev = p2p_get_device(p2p, addr); 417 if (dev) 418 return dev; 419 420 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 421 count++; 422 if (oldest == NULL || 423 os_time_before(&dev->last_seen, &oldest->last_seen)) 424 oldest = dev; 425 } 426 if (count + 1 > p2p->cfg->max_peers && oldest) { 427 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer"); 428 #ifdef ANDROID_P2P 429 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 430 if(&oldest->list == p2p->sd_dev_list) 431 p2p->sd_dev_list = oldest->list.next; 432 #endif 433 dl_list_del(&oldest->list); 434 p2p_device_free(p2p, oldest); 435 } 436 437 dev = os_zalloc(sizeof(*dev)); 438 if (dev == NULL) 439 return NULL; 440 dl_list_add(&p2p->devices, &dev->list); 441 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 442 443 return dev; 444 } 445 446 447 static void p2p_copy_client_info(struct p2p_device *dev, 448 struct p2p_client_info *cli) 449 { 450 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 451 dev->info.device_name[cli->dev_name_len] = '\0'; 452 dev->info.dev_capab = cli->dev_capab; 453 dev->info.config_methods = cli->config_methods; 454 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 455 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 456 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 457 dev->info.wps_sec_dev_type_list_len); 458 } 459 460 461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 462 const u8 *go_interface_addr, int freq, 463 const u8 *gi, size_t gi_len) 464 { 465 struct p2p_group_info info; 466 size_t c; 467 struct p2p_device *dev; 468 469 if (gi == NULL) 470 return 0; 471 472 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 473 return -1; 474 475 /* 476 * Clear old data for this group; if the devices are still in the 477 * group, the information will be restored in the loop following this. 478 */ 479 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 480 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 481 ETH_ALEN) == 0) { 482 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 483 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 484 } 485 } 486 487 for (c = 0; c < info.num_clients; c++) { 488 struct p2p_client_info *cli = &info.client[c]; 489 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 490 ETH_ALEN) == 0) 491 continue; /* ignore our own entry */ 492 dev = p2p_get_device(p2p, cli->p2p_device_addr); 493 if (dev) { 494 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 495 P2P_DEV_PROBE_REQ_ONLY)) { 496 /* 497 * Update information since we have not 498 * received this directly from the client. 499 */ 500 p2p_copy_client_info(dev, cli); 501 } else { 502 /* 503 * Need to update P2P Client Discoverability 504 * flag since it is valid only in P2P Group 505 * Info attribute. 506 */ 507 dev->info.dev_capab &= 508 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 509 dev->info.dev_capab |= 510 cli->dev_capab & 511 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 512 } 513 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 514 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 515 } 516 } else { 517 dev = p2p_create_device(p2p, cli->p2p_device_addr); 518 if (dev == NULL) 519 continue; 520 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 521 p2p_copy_client_info(dev, cli); 522 dev->oper_freq = freq; 523 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 524 dev->info.p2p_device_addr, 525 &dev->info, 1); 526 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 527 } 528 529 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 530 ETH_ALEN); 531 os_get_time(&dev->last_seen); 532 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 533 os_memcpy(dev->member_in_go_iface, go_interface_addr, 534 ETH_ALEN); 535 } 536 537 return 0; 538 } 539 540 541 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev, 542 int probe_req, const struct p2p_message *msg) 543 { 544 os_memcpy(dev->info.device_name, msg->device_name, 545 sizeof(dev->info.device_name)); 546 547 if (msg->manufacturer && 548 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 549 os_memset(dev->info.manufacturer, 0, 550 sizeof(dev->info.manufacturer)); 551 os_memcpy(dev->info.manufacturer, msg->manufacturer, 552 msg->manufacturer_len); 553 } 554 555 if (msg->model_name && 556 msg->model_name_len < sizeof(dev->info.model_name)) { 557 os_memset(dev->info.model_name, 0, 558 sizeof(dev->info.model_name)); 559 os_memcpy(dev->info.model_name, msg->model_name, 560 msg->model_name_len); 561 } 562 563 if (msg->model_number && 564 msg->model_number_len < sizeof(dev->info.model_number)) { 565 os_memset(dev->info.model_number, 0, 566 sizeof(dev->info.model_number)); 567 os_memcpy(dev->info.model_number, msg->model_number, 568 msg->model_number_len); 569 } 570 571 if (msg->serial_number && 572 msg->serial_number_len < sizeof(dev->info.serial_number)) { 573 os_memset(dev->info.serial_number, 0, 574 sizeof(dev->info.serial_number)); 575 os_memcpy(dev->info.serial_number, msg->serial_number, 576 msg->serial_number_len); 577 } 578 579 if (msg->pri_dev_type) 580 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 581 sizeof(dev->info.pri_dev_type)); 582 else if (msg->wps_pri_dev_type) 583 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 584 sizeof(dev->info.pri_dev_type)); 585 586 if (msg->wps_sec_dev_type_list) { 587 os_memcpy(dev->info.wps_sec_dev_type_list, 588 msg->wps_sec_dev_type_list, 589 msg->wps_sec_dev_type_list_len); 590 dev->info.wps_sec_dev_type_list_len = 591 msg->wps_sec_dev_type_list_len; 592 } 593 594 if (msg->capability) { 595 /* 596 * P2P Client Discoverability bit is reserved in all frames 597 * that use this function, so do not change its value here. 598 */ 599 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 600 dev->info.dev_capab |= msg->capability[0] & 601 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 602 dev->info.group_capab = msg->capability[1]; 603 } 604 605 if (msg->ext_listen_timing) { 606 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 607 dev->ext_listen_interval = 608 WPA_GET_LE16(msg->ext_listen_timing + 2); 609 } 610 611 if (!probe_req) { 612 u16 new_config_methods; 613 new_config_methods = msg->config_methods ? 614 msg->config_methods : msg->wps_config_methods; 615 if (new_config_methods && 616 dev->info.config_methods != new_config_methods) { 617 p2p_dbg(p2p, "Update peer " MACSTR 618 " config_methods 0x%x -> 0x%x", 619 MAC2STR(dev->info.p2p_device_addr), 620 dev->info.config_methods, 621 new_config_methods); 622 dev->info.config_methods = new_config_methods; 623 } 624 } 625 } 626 627 628 /** 629 * p2p_add_device - Add peer entries based on scan results or P2P frames 630 * @p2p: P2P module context from p2p_init() 631 * @addr: Source address of Beacon or Probe Response frame (may be either 632 * P2P Device Address or P2P Interface Address) 633 * @level: Signal level (signal strength of the received frame from the peer) 634 * @freq: Frequency on which the Beacon or Probe Response frame was received 635 * @rx_time: Time when the result was received 636 * @ies: IEs from the Beacon or Probe Response frame 637 * @ies_len: Length of ies buffer in octets 638 * @scan_res: Whether this was based on scan results 639 * Returns: 0 on success, -1 on failure 640 * 641 * If the scan result is for a GO, the clients in the group will also be added 642 * to the peer table. This function can also be used with some other frames 643 * like Provision Discovery Request that contains P2P Capability and P2P Device 644 * Info attributes. 645 */ 646 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 647 struct os_time *rx_time, int level, const u8 *ies, 648 size_t ies_len, int scan_res) 649 { 650 struct p2p_device *dev; 651 struct p2p_message msg; 652 const u8 *p2p_dev_addr; 653 int i; 654 struct os_time time_now; 655 656 os_memset(&msg, 0, sizeof(msg)); 657 if (p2p_parse_ies(ies, ies_len, &msg)) { 658 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry"); 659 p2p_parse_free(&msg); 660 return -1; 661 } 662 663 if (msg.p2p_device_addr) 664 p2p_dev_addr = msg.p2p_device_addr; 665 else if (msg.device_id) 666 p2p_dev_addr = msg.device_id; 667 else { 668 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 669 p2p_parse_free(&msg); 670 return -1; 671 } 672 673 if (!is_zero_ether_addr(p2p->peer_filter) && 674 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 675 p2p_dbg(p2p, "Do not add peer filter for " MACSTR 676 " due to peer filter", MAC2STR(p2p_dev_addr)); 677 p2p_parse_free(&msg); 678 return 0; 679 } 680 681 dev = p2p_create_device(p2p, p2p_dev_addr); 682 if (dev == NULL) { 683 p2p_parse_free(&msg); 684 return -1; 685 } 686 687 if (rx_time == NULL) { 688 os_get_time(&time_now); 689 rx_time = &time_now; 690 } 691 692 /* 693 * Update the device entry only if the new peer 694 * entry is newer than the one previously stored. 695 */ 696 if (dev->last_seen.sec > 0 && 697 os_time_before(rx_time, &dev->last_seen)) { 698 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)", 699 (unsigned int) rx_time->sec, 700 (unsigned int) rx_time->usec, 701 (unsigned int) dev->last_seen.sec, 702 (unsigned int) dev->last_seen.usec); 703 p2p_parse_free(&msg); 704 return -1; 705 } 706 707 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_time)); 708 709 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 710 711 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 712 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 713 if (msg.ssid && 714 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 715 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 716 != 0)) { 717 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 718 dev->oper_ssid_len = msg.ssid[1]; 719 } 720 721 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 722 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 723 int ds_freq; 724 if (*msg.ds_params == 14) 725 ds_freq = 2484; 726 else 727 ds_freq = 2407 + *msg.ds_params * 5; 728 if (freq != ds_freq) { 729 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz", 730 freq, ds_freq); 731 freq = ds_freq; 732 } 733 } 734 735 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 736 p2p_dbg(p2p, "Update Listen frequency based on scan results (" 737 MACSTR " %d -> %d MHz (DS param %d)", 738 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 739 freq, msg.ds_params ? *msg.ds_params : -1); 740 } 741 if (scan_res) { 742 dev->listen_freq = freq; 743 if (msg.group_info) 744 dev->oper_freq = freq; 745 } 746 dev->info.level = level; 747 748 p2p_copy_wps_info(p2p, dev, 0, &msg); 749 750 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 751 wpabuf_free(dev->info.wps_vendor_ext[i]); 752 dev->info.wps_vendor_ext[i] = NULL; 753 } 754 755 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 756 if (msg.wps_vendor_ext[i] == NULL) 757 break; 758 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 759 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 760 if (dev->info.wps_vendor_ext[i] == NULL) 761 break; 762 } 763 764 if (msg.wfd_subelems) { 765 wpabuf_free(dev->info.wfd_subelems); 766 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 767 } 768 769 if (scan_res) { 770 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 771 msg.group_info, msg.group_info_len); 772 } 773 774 p2p_parse_free(&msg); 775 776 if (p2p_pending_sd_req(p2p, dev)) 777 dev->flags |= P2P_DEV_SD_SCHEDULE; 778 779 if (dev->flags & P2P_DEV_REPORTED) 780 return 0; 781 782 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)", 783 freq, (unsigned int) rx_time->sec, 784 (unsigned int) rx_time->usec); 785 if (dev->flags & P2P_DEV_USER_REJECTED) { 786 p2p_dbg(p2p, "Do not report rejected device"); 787 return 0; 788 } 789 790 if (dev->info.config_methods == 0 && 791 (freq == 2412 || freq == 2437 || freq == 2462)) { 792 /* 793 * If we have only seen a Beacon frame from a GO, we do not yet 794 * know what WPS config methods it supports. Since some 795 * applications use config_methods value from P2P-DEVICE-FOUND 796 * events, postpone reporting this peer until we've fully 797 * discovered its capabilities. 798 * 799 * At least for now, do this only if the peer was detected on 800 * one of the social channels since that peer can be easily be 801 * found again and there are no limitations of having to use 802 * passive scan on this channels, so this can be done through 803 * Probe Response frame that includes the config_methods 804 * information. 805 */ 806 p2p_dbg(p2p, "Do not report peer " MACSTR 807 " with unknown config methods", MAC2STR(addr)); 808 return 0; 809 } 810 811 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 812 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 813 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 814 815 return 0; 816 } 817 818 819 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 820 { 821 int i; 822 823 if (p2p->go_neg_peer == dev) { 824 /* 825 * If GO Negotiation is in progress, report that it has failed. 826 */ 827 p2p_go_neg_failed(p2p, dev, -1); 828 p2p->go_neg_peer = NULL; 829 } 830 if (p2p->invite_peer == dev) 831 p2p->invite_peer = NULL; 832 if (p2p->sd_peer == dev) 833 p2p->sd_peer = NULL; 834 if (p2p->pending_client_disc_go == dev) 835 p2p->pending_client_disc_go = NULL; 836 837 /* dev_lost() device, but only if it was previously dev_found() */ 838 if (dev->flags & P2P_DEV_REPORTED_ONCE) 839 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 840 dev->info.p2p_device_addr); 841 842 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 843 wpabuf_free(dev->info.wps_vendor_ext[i]); 844 dev->info.wps_vendor_ext[i] = NULL; 845 } 846 847 wpabuf_free(dev->info.wfd_subelems); 848 849 os_free(dev); 850 } 851 852 853 static int p2p_get_next_prog_freq(struct p2p_data *p2p) 854 { 855 struct p2p_channels *c; 856 struct p2p_reg_class *cla; 857 size_t cl, ch; 858 int found = 0; 859 u8 reg_class; 860 u8 channel; 861 int freq; 862 863 c = &p2p->cfg->channels; 864 for (cl = 0; cl < c->reg_classes; cl++) { 865 cla = &c->reg_class[cl]; 866 if (cla->reg_class != p2p->last_prog_scan_class) 867 continue; 868 for (ch = 0; ch < cla->channels; ch++) { 869 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 870 found = 1; 871 break; 872 } 873 } 874 if (found) 875 break; 876 } 877 878 if (!found) { 879 /* Start from beginning */ 880 reg_class = c->reg_class[0].reg_class; 881 channel = c->reg_class[0].channel[0]; 882 } else { 883 /* Pick the next channel */ 884 ch++; 885 if (ch == cla->channels) { 886 cl++; 887 if (cl == c->reg_classes) 888 cl = 0; 889 ch = 0; 890 } 891 reg_class = c->reg_class[cl].reg_class; 892 channel = c->reg_class[cl].channel[ch]; 893 } 894 895 freq = p2p_channel_to_freq(reg_class, channel); 896 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz", 897 reg_class, channel, freq); 898 p2p->last_prog_scan_class = reg_class; 899 p2p->last_prog_scan_chan = channel; 900 901 if (freq == 2412 || freq == 2437 || freq == 2462) 902 return 0; /* No need to add social channels */ 903 return freq; 904 } 905 906 907 static void p2p_search(struct p2p_data *p2p) 908 { 909 int freq = 0; 910 enum p2p_scan_type type; 911 u16 pw_id = DEV_PW_DEFAULT; 912 int res; 913 914 if (p2p->drv_in_listen) { 915 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing"); 916 return; 917 } 918 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 919 920 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 921 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 922 type = P2P_SCAN_SOCIAL_PLUS_ONE; 923 p2p_dbg(p2p, "Starting search (+ freq %u)", freq); 924 } else { 925 type = P2P_SCAN_SOCIAL; 926 p2p_dbg(p2p, "Starting search"); 927 } 928 929 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 930 p2p->num_req_dev_types, p2p->req_dev_types, 931 p2p->find_dev_id, pw_id); 932 if (res < 0) { 933 p2p_dbg(p2p, "Scan request failed"); 934 p2p_continue_find(p2p); 935 } else if (res == 1) { 936 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes"); 937 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 938 } else { 939 p2p_dbg(p2p, "Running p2p_scan"); 940 p2p->p2p_scan_running = 1; 941 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 942 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 943 p2p, NULL); 944 } 945 } 946 947 948 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 949 { 950 struct p2p_data *p2p = eloop_ctx; 951 p2p_dbg(p2p, "Find timeout -> stop"); 952 p2p_stop_find(p2p); 953 } 954 955 956 static int p2p_run_after_scan(struct p2p_data *p2p) 957 { 958 struct p2p_device *dev; 959 enum p2p_after_scan op; 960 961 if (p2p->after_scan_tx) { 962 p2p->after_scan_tx_in_progress = 1; 963 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion"); 964 p2p->cfg->send_action(p2p->cfg->cb_ctx, 965 p2p->after_scan_tx->freq, 966 p2p->after_scan_tx->dst, 967 p2p->after_scan_tx->src, 968 p2p->after_scan_tx->bssid, 969 (u8 *) (p2p->after_scan_tx + 1), 970 p2p->after_scan_tx->len, 971 p2p->after_scan_tx->wait_time); 972 os_free(p2p->after_scan_tx); 973 p2p->after_scan_tx = NULL; 974 #ifdef ANDROID_P2P 975 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 976 * At that moment, we will send the SD response from this context. After sending the SD response, 977 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 978 */ 979 return 0; 980 #else 981 return 1; 982 #endif 983 } 984 985 op = p2p->start_after_scan; 986 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 987 switch (op) { 988 case P2P_AFTER_SCAN_NOTHING: 989 break; 990 case P2P_AFTER_SCAN_LISTEN: 991 p2p_dbg(p2p, "Start previously requested Listen state"); 992 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 993 p2p->pending_listen_usec / 1000); 994 return 1; 995 case P2P_AFTER_SCAN_CONNECT: 996 p2p_dbg(p2p, "Start previously requested connect with " MACSTR, 997 MAC2STR(p2p->after_scan_peer)); 998 dev = p2p_get_device(p2p, p2p->after_scan_peer); 999 if (dev == NULL) { 1000 p2p_dbg(p2p, "Peer not known anymore"); 1001 break; 1002 } 1003 p2p_connect_send(p2p, dev); 1004 return 1; 1005 } 1006 1007 return 0; 1008 } 1009 1010 1011 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1012 { 1013 struct p2p_data *p2p = eloop_ctx; 1014 int running; 1015 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running); 1016 running = p2p->p2p_scan_running; 1017 /* Make sure we recover from missed scan results callback */ 1018 p2p->p2p_scan_running = 0; 1019 1020 if (running) 1021 p2p_run_after_scan(p2p); 1022 } 1023 1024 1025 static void p2p_free_req_dev_types(struct p2p_data *p2p) 1026 { 1027 p2p->num_req_dev_types = 0; 1028 os_free(p2p->req_dev_types); 1029 p2p->req_dev_types = NULL; 1030 } 1031 1032 1033 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1034 enum p2p_discovery_type type, 1035 unsigned int num_req_dev_types, const u8 *req_dev_types, 1036 const u8 *dev_id, unsigned int search_delay) 1037 { 1038 int res; 1039 1040 p2p_dbg(p2p, "Starting find (type=%d)", type); 1041 os_get_time(&p2p->find_start); 1042 if (p2p->p2p_scan_running) { 1043 p2p_dbg(p2p, "p2p_scan is already running"); 1044 } 1045 1046 p2p_free_req_dev_types(p2p); 1047 if (req_dev_types && num_req_dev_types) { 1048 p2p->req_dev_types = os_malloc(num_req_dev_types * 1049 WPS_DEV_TYPE_LEN); 1050 if (p2p->req_dev_types == NULL) 1051 return -1; 1052 os_memcpy(p2p->req_dev_types, req_dev_types, 1053 num_req_dev_types * WPS_DEV_TYPE_LEN); 1054 p2p->num_req_dev_types = num_req_dev_types; 1055 } 1056 1057 if (dev_id) { 1058 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1059 p2p->find_dev_id = p2p->find_dev_id_buf; 1060 } else 1061 p2p->find_dev_id = NULL; 1062 1063 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1064 p2p_clear_timeout(p2p); 1065 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1066 p2p->find_type = type; 1067 p2p_device_clear_reported(p2p); 1068 p2p_set_state(p2p, P2P_SEARCH); 1069 p2p->search_delay = search_delay; 1070 p2p->in_search_delay = 0; 1071 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1072 p2p->last_p2p_find_timeout = timeout; 1073 if (timeout) 1074 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1075 p2p, NULL); 1076 switch (type) { 1077 case P2P_FIND_START_WITH_FULL: 1078 case P2P_FIND_PROGRESSIVE: 1079 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1080 p2p->num_req_dev_types, 1081 p2p->req_dev_types, dev_id, 1082 DEV_PW_DEFAULT); 1083 break; 1084 case P2P_FIND_ONLY_SOCIAL: 1085 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1086 p2p->num_req_dev_types, 1087 p2p->req_dev_types, dev_id, 1088 DEV_PW_DEFAULT); 1089 break; 1090 default: 1091 return -1; 1092 } 1093 1094 if (res == 0) { 1095 p2p_dbg(p2p, "Running p2p_scan"); 1096 p2p->p2p_scan_running = 1; 1097 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1098 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1099 p2p, NULL); 1100 } else if (res == 1) { 1101 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes"); 1102 res = 0; 1103 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1104 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1105 } else { 1106 p2p_dbg(p2p, "Failed to start p2p_scan"); 1107 p2p_set_state(p2p, P2P_IDLE); 1108 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1109 } 1110 1111 return res; 1112 } 1113 1114 #ifdef ANDROID_P2P 1115 int p2p_search_pending(struct p2p_data *p2p) 1116 { 1117 if(p2p == NULL) 1118 return 0; 1119 1120 if(p2p->state == P2P_SEARCH_WHEN_READY) 1121 return 1; 1122 1123 return 0; 1124 } 1125 #endif 1126 1127 int p2p_other_scan_completed(struct p2p_data *p2p) 1128 { 1129 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1130 p2p_set_state(p2p, P2P_SEARCH); 1131 p2p_search(p2p); 1132 return 1; 1133 } 1134 if (p2p->state != P2P_SEARCH_WHEN_READY) 1135 return 0; 1136 p2p_dbg(p2p, "Starting pending P2P find now that previous scan was completed"); 1137 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1138 p2p->num_req_dev_types, p2p->req_dev_types, 1139 p2p->find_dev_id, p2p->search_delay) < 0) { 1140 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1141 return 0; 1142 } 1143 return 1; 1144 } 1145 1146 1147 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1148 { 1149 p2p_dbg(p2p, "Stopping find"); 1150 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1151 p2p_clear_timeout(p2p); 1152 if (p2p->state == P2P_SEARCH || 1153 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY || 1154 p2p->state == P2P_SEARCH_WHEN_READY) 1155 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1156 p2p_set_state(p2p, P2P_IDLE); 1157 p2p_free_req_dev_types(p2p); 1158 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1159 if (p2p->go_neg_peer) 1160 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1161 p2p->go_neg_peer = NULL; 1162 p2p->sd_peer = NULL; 1163 p2p->invite_peer = NULL; 1164 p2p_stop_listen_for_freq(p2p, freq); 1165 } 1166 1167 1168 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1169 { 1170 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1171 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1172 return; 1173 } 1174 if (p2p->in_listen) { 1175 p2p->in_listen = 0; 1176 p2p_clear_timeout(p2p); 1177 } 1178 if (p2p->drv_in_listen) { 1179 /* 1180 * The driver may not deliver callback to p2p_listen_end() 1181 * when the operation gets canceled, so clear the internal 1182 * variable that is tracking driver state. 1183 */ 1184 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1185 p2p->drv_in_listen = 0; 1186 } 1187 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1188 } 1189 1190 1191 void p2p_stop_listen(struct p2p_data *p2p) 1192 { 1193 if (p2p->state != P2P_LISTEN_ONLY) { 1194 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1195 return; 1196 } 1197 1198 p2p_stop_listen_for_freq(p2p, 0); 1199 p2p_set_state(p2p, P2P_IDLE); 1200 } 1201 1202 1203 void p2p_stop_find(struct p2p_data *p2p) 1204 { 1205 p2p_stop_find_for_freq(p2p, 0); 1206 } 1207 1208 1209 static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1210 unsigned int force_freq, 1211 unsigned int pref_freq) 1212 { 1213 u8 op_class, op_channel; 1214 unsigned int freq = force_freq ? force_freq : pref_freq; 1215 1216 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u", 1217 force_freq, pref_freq); 1218 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1219 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1220 return -1; 1221 } 1222 1223 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) { 1224 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1225 freq, op_class, op_channel); 1226 return -1; 1227 } 1228 1229 p2p->op_reg_class = op_class; 1230 p2p->op_channel = op_channel; 1231 1232 if (force_freq) { 1233 p2p->channels.reg_classes = 1; 1234 p2p->channels.reg_class[0].channels = 1; 1235 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1236 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1237 } else { 1238 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1239 sizeof(struct p2p_channels)); 1240 } 1241 1242 return 0; 1243 } 1244 1245 1246 static void p2p_prepare_channel_best(struct p2p_data *p2p) 1247 { 1248 u8 op_class, op_channel; 1249 1250 p2p_dbg(p2p, "Prepare channel best"); 1251 1252 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1253 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1254 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1255 == 0) { 1256 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1257 p2p->op_reg_class = op_class; 1258 p2p->op_channel = op_channel; 1259 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1260 p2p_supported_freq(p2p, p2p->best_freq_5) && 1261 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1262 == 0) { 1263 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1264 p2p->op_reg_class = op_class; 1265 p2p->op_channel = op_channel; 1266 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1267 p2p_supported_freq(p2p, p2p->best_freq_24) && 1268 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1269 &op_channel) == 0) { 1270 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1271 p2p->op_reg_class = op_class; 1272 p2p->op_channel = op_channel; 1273 } else if (p2p->cfg->num_pref_chan > 0 && 1274 p2p_channels_includes(&p2p->cfg->channels, 1275 p2p->cfg->pref_chan[0].op_class, 1276 p2p->cfg->pref_chan[0].chan)) { 1277 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1278 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1279 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1280 } else { 1281 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1282 p2p->op_reg_class = p2p->cfg->op_reg_class; 1283 p2p->op_channel = p2p->cfg->op_channel; 1284 } 1285 1286 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1287 sizeof(struct p2p_channels)); 1288 } 1289 1290 1291 /** 1292 * p2p_prepare_channel - Select operating channel for GO Negotiation 1293 * @p2p: P2P module context from p2p_init() 1294 * @dev: Selected peer device 1295 * @force_freq: Forced frequency in MHz or 0 if not forced 1296 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1297 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1298 * 1299 * This function is used to do initial operating channel selection for GO 1300 * Negotiation prior to having received peer information. The selected channel 1301 * may be further optimized in p2p_reselect_channel() once the peer information 1302 * is available. 1303 */ 1304 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1305 unsigned int force_freq, unsigned int pref_freq) 1306 { 1307 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u", 1308 force_freq, pref_freq); 1309 if (force_freq || pref_freq) { 1310 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0) 1311 return -1; 1312 } else { 1313 p2p_prepare_channel_best(p2p); 1314 } 1315 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1316 p2p->op_reg_class, p2p->op_channel, 1317 force_freq ? " (forced)" : ""); 1318 1319 if (force_freq) 1320 dev->flags |= P2P_DEV_FORCE_FREQ; 1321 else 1322 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1323 1324 return 0; 1325 } 1326 1327 1328 static void p2p_set_dev_persistent(struct p2p_device *dev, 1329 int persistent_group) 1330 { 1331 switch (persistent_group) { 1332 case 0: 1333 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1334 P2P_DEV_PREFER_PERSISTENT_RECONN); 1335 break; 1336 case 1: 1337 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1338 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1339 break; 1340 case 2: 1341 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1342 P2P_DEV_PREFER_PERSISTENT_RECONN; 1343 break; 1344 } 1345 } 1346 1347 1348 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1349 enum p2p_wps_method wps_method, 1350 int go_intent, const u8 *own_interface_addr, 1351 unsigned int force_freq, int persistent_group, 1352 const u8 *force_ssid, size_t force_ssid_len, 1353 int pd_before_go_neg, unsigned int pref_freq) 1354 { 1355 struct p2p_device *dev; 1356 1357 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1358 " GO Intent=%d Intended Interface Address=" MACSTR 1359 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1360 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1361 wps_method, persistent_group, pd_before_go_neg); 1362 1363 dev = p2p_get_device(p2p, peer_addr); 1364 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1365 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1366 MAC2STR(peer_addr)); 1367 return -1; 1368 } 1369 1370 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1371 return -1; 1372 1373 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1374 if (!(dev->info.dev_capab & 1375 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1376 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1377 " that is in a group and is not discoverable", 1378 MAC2STR(peer_addr)); 1379 return -1; 1380 } 1381 if (dev->oper_freq <= 0) { 1382 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1383 " with incomplete information", 1384 MAC2STR(peer_addr)); 1385 return -1; 1386 } 1387 1388 /* 1389 * First, try to connect directly. If the peer does not 1390 * acknowledge frames, assume it is sleeping and use device 1391 * discoverability via the GO at that point. 1392 */ 1393 } 1394 1395 p2p->ssid_set = 0; 1396 if (force_ssid) { 1397 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1398 force_ssid, force_ssid_len); 1399 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1400 p2p->ssid_len = force_ssid_len; 1401 p2p->ssid_set = 1; 1402 } 1403 1404 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1405 dev->flags &= ~P2P_DEV_USER_REJECTED; 1406 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1407 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1408 if (pd_before_go_neg) 1409 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1410 else { 1411 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1412 /* 1413 * Assign dialog token and tie breaker here to use the same 1414 * values in each retry within the same GO Negotiation exchange. 1415 */ 1416 dev->dialog_token++; 1417 if (dev->dialog_token == 0) 1418 dev->dialog_token = 1; 1419 dev->tie_breaker = p2p->next_tie_breaker; 1420 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1421 } 1422 dev->connect_reqs = 0; 1423 dev->go_neg_req_sent = 0; 1424 dev->go_state = UNKNOWN_GO; 1425 p2p_set_dev_persistent(dev, persistent_group); 1426 p2p->go_intent = go_intent; 1427 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1428 1429 if (p2p->state != P2P_IDLE) 1430 p2p_stop_find(p2p); 1431 1432 if (p2p->after_scan_tx) { 1433 /* 1434 * We need to drop the pending frame to avoid issues with the 1435 * new GO Negotiation, e.g., when the pending frame was from a 1436 * previous attempt at starting a GO Negotiation. 1437 */ 1438 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion"); 1439 os_free(p2p->after_scan_tx); 1440 p2p->after_scan_tx = NULL; 1441 } 1442 1443 dev->wps_method = wps_method; 1444 dev->status = P2P_SC_SUCCESS; 1445 1446 if (p2p->p2p_scan_running) { 1447 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1448 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1449 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1450 return 0; 1451 } 1452 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1453 1454 return p2p_connect_send(p2p, dev); 1455 } 1456 1457 1458 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1459 enum p2p_wps_method wps_method, 1460 int go_intent, const u8 *own_interface_addr, 1461 unsigned int force_freq, int persistent_group, 1462 const u8 *force_ssid, size_t force_ssid_len, 1463 unsigned int pref_freq) 1464 { 1465 struct p2p_device *dev; 1466 1467 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1468 " GO Intent=%d Intended Interface Address=" MACSTR 1469 " wps_method=%d persistent_group=%d", 1470 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1471 wps_method, persistent_group); 1472 1473 dev = p2p_get_device(p2p, peer_addr); 1474 if (dev == NULL) { 1475 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1476 MAC2STR(peer_addr)); 1477 return -1; 1478 } 1479 1480 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1481 return -1; 1482 1483 p2p->ssid_set = 0; 1484 if (force_ssid) { 1485 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1486 force_ssid, force_ssid_len); 1487 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1488 p2p->ssid_len = force_ssid_len; 1489 p2p->ssid_set = 1; 1490 } 1491 1492 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1493 dev->flags &= ~P2P_DEV_USER_REJECTED; 1494 dev->go_neg_req_sent = 0; 1495 dev->go_state = UNKNOWN_GO; 1496 p2p_set_dev_persistent(dev, persistent_group); 1497 p2p->go_intent = go_intent; 1498 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1499 1500 dev->wps_method = wps_method; 1501 dev->status = P2P_SC_SUCCESS; 1502 1503 return 0; 1504 } 1505 1506 1507 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1508 struct p2p_device *dev, struct p2p_message *msg) 1509 { 1510 os_get_time(&dev->last_seen); 1511 1512 p2p_copy_wps_info(p2p, dev, 0, msg); 1513 1514 if (msg->listen_channel) { 1515 int freq; 1516 freq = p2p_channel_to_freq(msg->listen_channel[3], 1517 msg->listen_channel[4]); 1518 if (freq < 0) { 1519 p2p_dbg(p2p, "Unknown peer Listen channel: " 1520 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1521 msg->listen_channel[0], 1522 msg->listen_channel[1], 1523 msg->listen_channel[2], 1524 msg->listen_channel[3], 1525 msg->listen_channel[4]); 1526 } else { 1527 p2p_dbg(p2p, "Update peer " MACSTR 1528 " Listen channel: %u -> %u MHz", 1529 MAC2STR(dev->info.p2p_device_addr), 1530 dev->listen_freq, freq); 1531 dev->listen_freq = freq; 1532 } 1533 } 1534 1535 if (msg->wfd_subelems) { 1536 wpabuf_free(dev->info.wfd_subelems); 1537 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1538 } 1539 1540 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1541 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1542 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1543 } else { 1544 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1545 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1546 "listen_freq=%d", 1547 MAC2STR(dev->info.p2p_device_addr), 1548 dev->info.dev_capab, dev->info.group_capab, 1549 dev->info.device_name, dev->listen_freq); 1550 } 1551 1552 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1553 1554 if (dev->flags & P2P_DEV_USER_REJECTED) { 1555 p2p_dbg(p2p, "Do not report rejected device"); 1556 return; 1557 } 1558 1559 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1560 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1561 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1562 } 1563 1564 1565 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1566 { 1567 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1568 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1569 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1570 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1571 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1572 } 1573 1574 1575 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1576 { 1577 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1578 p2p_random(params->passphrase, 8); 1579 return 0; 1580 } 1581 1582 1583 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1584 { 1585 struct p2p_go_neg_results res; 1586 int go = peer->go_state == LOCAL_GO; 1587 struct p2p_channels intersection; 1588 int freqs; 1589 size_t i, j; 1590 1591 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1592 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1593 1594 os_memset(&res, 0, sizeof(res)); 1595 res.role_go = go; 1596 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1597 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1598 res.wps_method = peer->wps_method; 1599 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1600 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1601 res.persistent_group = 2; 1602 else 1603 res.persistent_group = 1; 1604 } 1605 1606 if (go) { 1607 /* Setup AP mode for WPS provisioning */ 1608 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1609 p2p->op_channel); 1610 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1611 res.ssid_len = p2p->ssid_len; 1612 p2p_random(res.passphrase, 8); 1613 } else { 1614 res.freq = peer->oper_freq; 1615 if (p2p->ssid_len) { 1616 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1617 res.ssid_len = p2p->ssid_len; 1618 } 1619 } 1620 1621 p2p_channels_intersect(&p2p->channels, &peer->channels, 1622 &intersection); 1623 freqs = 0; 1624 for (i = 0; i < intersection.reg_classes; i++) { 1625 struct p2p_reg_class *c = &intersection.reg_class[i]; 1626 if (freqs + 1 == P2P_MAX_CHANNELS) 1627 break; 1628 for (j = 0; j < c->channels; j++) { 1629 int freq; 1630 if (freqs + 1 == P2P_MAX_CHANNELS) 1631 break; 1632 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]); 1633 if (freq < 0) 1634 continue; 1635 res.freq_list[freqs++] = freq; 1636 } 1637 } 1638 1639 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1640 1641 p2p_clear_timeout(p2p); 1642 p2p->ssid_set = 0; 1643 peer->go_neg_req_sent = 0; 1644 peer->wps_method = WPS_NOT_READY; 1645 1646 p2p_set_state(p2p, P2P_PROVISIONING); 1647 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1648 } 1649 1650 1651 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1652 const u8 *data, size_t len, int rx_freq) 1653 { 1654 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1655 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1656 1657 if (len < 1) 1658 return; 1659 1660 switch (data[0]) { 1661 case P2P_GO_NEG_REQ: 1662 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1663 break; 1664 case P2P_GO_NEG_RESP: 1665 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1666 break; 1667 case P2P_GO_NEG_CONF: 1668 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1669 break; 1670 case P2P_INVITATION_REQ: 1671 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1672 rx_freq); 1673 break; 1674 case P2P_INVITATION_RESP: 1675 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1676 break; 1677 case P2P_PROV_DISC_REQ: 1678 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1679 break; 1680 case P2P_PROV_DISC_RESP: 1681 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1682 break; 1683 case P2P_DEV_DISC_REQ: 1684 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1685 break; 1686 case P2P_DEV_DISC_RESP: 1687 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1688 break; 1689 default: 1690 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1691 data[0]); 1692 break; 1693 } 1694 } 1695 1696 1697 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1698 const u8 *sa, const u8 *bssid, const u8 *data, 1699 size_t len, int freq) 1700 { 1701 if (len < 1) 1702 return; 1703 1704 switch (data[0]) { 1705 case WLAN_PA_VENDOR_SPECIFIC: 1706 data++; 1707 len--; 1708 if (len < 3) 1709 return; 1710 if (WPA_GET_BE24(data) != OUI_WFA) 1711 return; 1712 1713 data += 3; 1714 len -= 3; 1715 if (len < 1) 1716 return; 1717 1718 if (*data != P2P_OUI_TYPE) 1719 return; 1720 1721 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1722 break; 1723 case WLAN_PA_GAS_INITIAL_REQ: 1724 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1725 break; 1726 case WLAN_PA_GAS_INITIAL_RESP: 1727 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1728 break; 1729 case WLAN_PA_GAS_COMEBACK_REQ: 1730 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1731 break; 1732 case WLAN_PA_GAS_COMEBACK_RESP: 1733 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1734 break; 1735 } 1736 } 1737 1738 1739 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1740 const u8 *bssid, u8 category, 1741 const u8 *data, size_t len, int freq) 1742 { 1743 if (category == WLAN_ACTION_PUBLIC) { 1744 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1745 return; 1746 } 1747 1748 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1749 return; 1750 1751 if (len < 4) 1752 return; 1753 1754 if (WPA_GET_BE24(data) != OUI_WFA) 1755 return; 1756 data += 3; 1757 len -= 3; 1758 1759 if (*data != P2P_OUI_TYPE) 1760 return; 1761 data++; 1762 len--; 1763 1764 /* P2P action frame */ 1765 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1766 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1767 1768 if (len < 1) 1769 return; 1770 switch (data[0]) { 1771 case P2P_NOA: 1772 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1773 /* TODO */ 1774 break; 1775 case P2P_PRESENCE_REQ: 1776 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1777 break; 1778 case P2P_PRESENCE_RESP: 1779 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1780 break; 1781 case P2P_GO_DISC_REQ: 1782 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1783 break; 1784 default: 1785 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 1786 break; 1787 } 1788 } 1789 1790 1791 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1792 { 1793 struct p2p_data *p2p = eloop_ctx; 1794 if (p2p->go_neg_peer == NULL) 1795 return; 1796 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1797 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1798 p2p_connect_send(p2p, p2p->go_neg_peer); 1799 } 1800 1801 1802 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1803 { 1804 struct p2p_data *p2p = eloop_ctx; 1805 if (p2p->invite_peer == NULL) 1806 return; 1807 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1808 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1809 } 1810 1811 1812 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1813 const u8 *ie, size_t ie_len) 1814 { 1815 struct p2p_message msg; 1816 struct p2p_device *dev; 1817 1818 os_memset(&msg, 0, sizeof(msg)); 1819 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1820 { 1821 p2p_parse_free(&msg); 1822 return; /* not a P2P probe */ 1823 } 1824 1825 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1826 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1827 != 0) { 1828 /* The Probe Request is not part of P2P Device Discovery. It is 1829 * not known whether the source address of the frame is the P2P 1830 * Device Address or P2P Interface Address. Do not add a new 1831 * peer entry based on this frames. 1832 */ 1833 p2p_parse_free(&msg); 1834 return; 1835 } 1836 1837 dev = p2p_get_device(p2p, addr); 1838 if (dev) { 1839 if (dev->country[0] == 0 && msg.listen_channel) 1840 os_memcpy(dev->country, msg.listen_channel, 3); 1841 os_get_time(&dev->last_seen); 1842 p2p_parse_free(&msg); 1843 return; /* already known */ 1844 } 1845 1846 dev = p2p_create_device(p2p, addr); 1847 if (dev == NULL) { 1848 p2p_parse_free(&msg); 1849 return; 1850 } 1851 1852 os_get_time(&dev->last_seen); 1853 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1854 1855 if (msg.listen_channel) { 1856 os_memcpy(dev->country, msg.listen_channel, 3); 1857 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 1858 msg.listen_channel[4]); 1859 } 1860 1861 p2p_copy_wps_info(p2p, dev, 1, &msg); 1862 1863 if (msg.wfd_subelems) { 1864 wpabuf_free(dev->info.wfd_subelems); 1865 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1866 } 1867 1868 p2p_parse_free(&msg); 1869 1870 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 1871 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1872 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1873 dev->info.group_capab, dev->info.device_name, 1874 dev->listen_freq); 1875 } 1876 1877 1878 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1879 const u8 *addr, 1880 struct p2p_message *msg) 1881 { 1882 struct p2p_device *dev; 1883 1884 dev = p2p_get_device(p2p, addr); 1885 if (dev) { 1886 os_get_time(&dev->last_seen); 1887 return dev; /* already known */ 1888 } 1889 1890 dev = p2p_create_device(p2p, addr); 1891 if (dev == NULL) 1892 return NULL; 1893 1894 p2p_add_dev_info(p2p, addr, dev, msg); 1895 1896 return dev; 1897 } 1898 1899 1900 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1901 { 1902 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1903 return 1; 1904 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1905 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1906 WPA_GET_BE16(&req_dev_type[6]) == 0) 1907 return 1; /* Category match with wildcard OUI/sub-category */ 1908 return 0; 1909 } 1910 1911 1912 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1913 size_t num_req_dev_type) 1914 { 1915 size_t i; 1916 for (i = 0; i < num_req_dev_type; i++) { 1917 if (dev_type_match(dev_type, req_dev_type[i])) 1918 return 1; 1919 } 1920 return 0; 1921 } 1922 1923 1924 /** 1925 * p2p_match_dev_type - Match local device type with requested type 1926 * @p2p: P2P module context from p2p_init() 1927 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1928 * Returns: 1 on match, 0 on mismatch 1929 * 1930 * This function can be used to match the Requested Device Type attribute in 1931 * WPS IE with the local device types for deciding whether to reply to a Probe 1932 * Request frame. 1933 */ 1934 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1935 { 1936 struct wps_parse_attr attr; 1937 size_t i; 1938 1939 if (wps_parse_msg(wps, &attr)) 1940 return 1; /* assume no Requested Device Type attributes */ 1941 1942 if (attr.num_req_dev_type == 0) 1943 return 1; /* no Requested Device Type attributes -> match */ 1944 1945 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1946 attr.num_req_dev_type)) 1947 return 1; /* Own Primary Device Type matches */ 1948 1949 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1950 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1951 attr.req_dev_type, 1952 attr.num_req_dev_type)) 1953 return 1; /* Own Secondary Device Type matches */ 1954 1955 /* No matching device type found */ 1956 return 0; 1957 } 1958 1959 1960 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1961 { 1962 struct wpabuf *buf; 1963 u8 *len; 1964 int pw_id = -1; 1965 size_t extra = 0; 1966 1967 #ifdef CONFIG_WIFI_DISPLAY 1968 if (p2p->wfd_ie_probe_resp) 1969 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1970 #endif /* CONFIG_WIFI_DISPLAY */ 1971 1972 buf = wpabuf_alloc(1000 + extra); 1973 if (buf == NULL) 1974 return NULL; 1975 1976 if (p2p->go_neg_peer) { 1977 /* Advertise immediate availability of WPS credential */ 1978 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1979 } 1980 1981 p2p_build_wps_ie(p2p, buf, pw_id, 1); 1982 1983 #ifdef CONFIG_WIFI_DISPLAY 1984 if (p2p->wfd_ie_probe_resp) 1985 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1986 #endif /* CONFIG_WIFI_DISPLAY */ 1987 1988 /* P2P IE */ 1989 len = p2p_buf_add_ie_hdr(buf); 1990 p2p_buf_add_capability(buf, p2p->dev_capab & 1991 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1992 if (p2p->ext_listen_interval) 1993 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1994 p2p->ext_listen_interval); 1995 p2p_buf_add_device_info(buf, p2p, NULL); 1996 p2p_buf_update_ie_hdr(buf, len); 1997 1998 return buf; 1999 } 2000 2001 2002 static enum p2p_probe_req_status 2003 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2004 const u8 *bssid, const u8 *ie, size_t ie_len) 2005 { 2006 struct ieee802_11_elems elems; 2007 struct wpabuf *buf; 2008 struct ieee80211_mgmt *resp; 2009 struct p2p_message msg; 2010 struct wpabuf *ies; 2011 2012 if (!p2p->in_listen || !p2p->drv_in_listen) { 2013 /* not in Listen state - ignore Probe Request */ 2014 return P2P_PREQ_NOT_LISTEN; 2015 } 2016 2017 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2018 ParseFailed) { 2019 /* Ignore invalid Probe Request frames */ 2020 return P2P_PREQ_MALFORMED; 2021 } 2022 2023 if (elems.p2p == NULL) { 2024 /* not a P2P probe - ignore it */ 2025 return P2P_PREQ_NOT_P2P; 2026 } 2027 2028 if (dst && !is_broadcast_ether_addr(dst) && 2029 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2030 /* Not sent to the broadcast address or our P2P Device Address 2031 */ 2032 return P2P_PREQ_NOT_PROCESSED; 2033 } 2034 2035 if (bssid && !is_broadcast_ether_addr(bssid)) { 2036 /* Not sent to the Wildcard BSSID */ 2037 return P2P_PREQ_NOT_PROCESSED; 2038 } 2039 2040 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2041 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2042 0) { 2043 /* not using P2P Wildcard SSID - ignore */ 2044 return P2P_PREQ_NOT_PROCESSED; 2045 } 2046 2047 if (supp_rates_11b_only(&elems)) { 2048 /* Indicates support for 11b rates only */ 2049 return P2P_PREQ_NOT_P2P; 2050 } 2051 2052 os_memset(&msg, 0, sizeof(msg)); 2053 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2054 /* Could not parse P2P attributes */ 2055 return P2P_PREQ_NOT_P2P; 2056 } 2057 2058 if (msg.device_id && 2059 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2060 /* Device ID did not match */ 2061 p2p_parse_free(&msg); 2062 return P2P_PREQ_NOT_PROCESSED; 2063 } 2064 2065 /* Check Requested Device Type match */ 2066 if (msg.wps_attributes && 2067 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2068 /* No match with Requested Device Type */ 2069 p2p_parse_free(&msg); 2070 return P2P_PREQ_NOT_PROCESSED; 2071 } 2072 p2p_parse_free(&msg); 2073 2074 if (!p2p->cfg->send_probe_resp) { 2075 /* Response generated elsewhere */ 2076 return P2P_PREQ_NOT_PROCESSED; 2077 } 2078 2079 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2080 2081 /* 2082 * We do not really have a specific BSS that this frame is advertising, 2083 * so build a frame that has some information in valid format. This is 2084 * really only used for discovery purposes, not to learn exact BSS 2085 * parameters. 2086 */ 2087 ies = p2p_build_probe_resp_ies(p2p); 2088 if (ies == NULL) 2089 return P2P_PREQ_NOT_PROCESSED; 2090 2091 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2092 if (buf == NULL) { 2093 wpabuf_free(ies); 2094 return P2P_PREQ_NOT_PROCESSED; 2095 } 2096 2097 resp = NULL; 2098 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2099 2100 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2101 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2102 os_memcpy(resp->da, addr, ETH_ALEN); 2103 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2104 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2105 resp->u.probe_resp.beacon_int = host_to_le16(100); 2106 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2107 resp->u.probe_resp.capab_info = 2108 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2109 WLAN_CAPABILITY_PRIVACY | 2110 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2111 2112 wpabuf_put_u8(buf, WLAN_EID_SSID); 2113 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2114 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2115 2116 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2117 wpabuf_put_u8(buf, 8); 2118 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2119 wpabuf_put_u8(buf, 90 / 5); 2120 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2121 wpabuf_put_u8(buf, 180 / 5); 2122 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2123 wpabuf_put_u8(buf, 360 / 5); 2124 wpabuf_put_u8(buf, 480 / 5); 2125 wpabuf_put_u8(buf, 540 / 5); 2126 2127 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2128 wpabuf_put_u8(buf, 1); 2129 wpabuf_put_u8(buf, p2p->cfg->channel); 2130 2131 wpabuf_put_buf(buf, ies); 2132 wpabuf_free(ies); 2133 2134 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2135 2136 wpabuf_free(buf); 2137 2138 return P2P_PREQ_NOT_PROCESSED; 2139 } 2140 2141 2142 enum p2p_probe_req_status 2143 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2144 const u8 *bssid, const u8 *ie, size_t ie_len) 2145 { 2146 enum p2p_probe_req_status res; 2147 2148 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2149 2150 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2151 2152 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2153 p2p->go_neg_peer && 2154 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2155 == 0 && 2156 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2157 /* Received a Probe Request from GO Negotiation peer */ 2158 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2159 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2160 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2161 return P2P_PREQ_PROCESSED; 2162 } 2163 2164 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2165 p2p->invite_peer && 2166 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2167 == 0) { 2168 /* Received a Probe Request from Invite peer */ 2169 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2170 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2171 return P2P_PREQ_PROCESSED; 2172 } 2173 2174 return res; 2175 } 2176 2177 2178 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2179 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2180 { 2181 struct wpabuf *tmp; 2182 u8 *lpos; 2183 size_t tmplen; 2184 int res; 2185 u8 group_capab; 2186 2187 if (p2p_ie == NULL) 2188 return 0; /* WLAN AP is not a P2P manager */ 2189 2190 /* 2191 * (Re)Association Request - P2P IE 2192 * P2P Capability attribute (shall be present) 2193 * P2P Interface attribute (present if concurrent device and 2194 * P2P Management is enabled) 2195 */ 2196 tmp = wpabuf_alloc(200); 2197 if (tmp == NULL) 2198 return -1; 2199 2200 lpos = p2p_buf_add_ie_hdr(tmp); 2201 group_capab = 0; 2202 if (p2p->num_groups > 0) { 2203 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2204 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2205 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2206 p2p->cross_connect) 2207 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2208 } 2209 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2210 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2211 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2212 p2p_buf_add_p2p_interface(tmp, p2p); 2213 p2p_buf_update_ie_hdr(tmp, lpos); 2214 2215 tmplen = wpabuf_len(tmp); 2216 if (tmplen > len) 2217 res = -1; 2218 else { 2219 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2220 res = tmplen; 2221 } 2222 wpabuf_free(tmp); 2223 2224 return res; 2225 } 2226 2227 2228 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2229 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2230 { 2231 struct wpabuf *tmp; 2232 u8 *lpos; 2233 struct p2p_device *peer; 2234 size_t tmplen; 2235 int res; 2236 size_t extra = 0; 2237 2238 if (!p2p_group) 2239 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2240 2241 #ifdef CONFIG_WIFI_DISPLAY 2242 if (p2p->wfd_ie_assoc_req) 2243 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2244 #endif /* CONFIG_WIFI_DISPLAY */ 2245 2246 /* 2247 * (Re)Association Request - P2P IE 2248 * P2P Capability attribute (shall be present) 2249 * Extended Listen Timing (may be present) 2250 * P2P Device Info attribute (shall be present) 2251 */ 2252 tmp = wpabuf_alloc(200 + extra); 2253 if (tmp == NULL) 2254 return -1; 2255 2256 #ifdef CONFIG_WIFI_DISPLAY 2257 if (p2p->wfd_ie_assoc_req) 2258 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2259 #endif /* CONFIG_WIFI_DISPLAY */ 2260 2261 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2262 2263 lpos = p2p_buf_add_ie_hdr(tmp); 2264 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2265 if (p2p->ext_listen_interval) 2266 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2267 p2p->ext_listen_interval); 2268 p2p_buf_add_device_info(tmp, p2p, peer); 2269 p2p_buf_update_ie_hdr(tmp, lpos); 2270 2271 tmplen = wpabuf_len(tmp); 2272 if (tmplen > len) 2273 res = -1; 2274 else { 2275 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2276 res = tmplen; 2277 } 2278 wpabuf_free(tmp); 2279 2280 return res; 2281 } 2282 2283 2284 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2285 { 2286 struct wpabuf *p2p_ie; 2287 int ret; 2288 2289 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2290 if (p2p_ie == NULL) 2291 return 0; 2292 2293 ret = p2p_attr_text(p2p_ie, buf, end); 2294 wpabuf_free(p2p_ie); 2295 return ret; 2296 } 2297 2298 2299 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2300 { 2301 struct p2p_message msg; 2302 2303 os_memset(&msg, 0, sizeof(msg)); 2304 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2305 return -1; 2306 2307 if (msg.p2p_device_addr) { 2308 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2309 return 0; 2310 } else if (msg.device_id) { 2311 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2312 return 0; 2313 } 2314 return -1; 2315 } 2316 2317 2318 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2319 { 2320 struct wpabuf *p2p_ie; 2321 int ret; 2322 2323 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2324 P2P_IE_VENDOR_TYPE); 2325 if (p2p_ie == NULL) 2326 return -1; 2327 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2328 wpabuf_free(p2p_ie); 2329 return ret; 2330 } 2331 2332 2333 static void p2p_clear_go_neg(struct p2p_data *p2p) 2334 { 2335 p2p->go_neg_peer = NULL; 2336 p2p_clear_timeout(p2p); 2337 p2p_set_state(p2p, P2P_IDLE); 2338 } 2339 2340 2341 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2342 { 2343 if (p2p->go_neg_peer == NULL) { 2344 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2345 return; /* No pending Group Formation */ 2346 } 2347 2348 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2349 0) { 2350 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2351 MACSTR " (GO Negotiation peer " MACSTR ")", 2352 MAC2STR(mac_addr), 2353 MAC2STR(p2p->go_neg_peer->intended_addr)); 2354 return; /* Ignore unexpected peer address */ 2355 } 2356 2357 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2358 MAC2STR(mac_addr)); 2359 2360 p2p_clear_go_neg(p2p); 2361 } 2362 2363 2364 void p2p_group_formation_failed(struct p2p_data *p2p) 2365 { 2366 if (p2p->go_neg_peer == NULL) { 2367 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2368 return; /* No pending Group Formation */ 2369 } 2370 2371 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2372 MAC2STR(p2p->go_neg_peer->intended_addr)); 2373 2374 p2p_clear_go_neg(p2p); 2375 } 2376 2377 2378 struct p2p_data * p2p_init(const struct p2p_config *cfg) 2379 { 2380 struct p2p_data *p2p; 2381 2382 if (cfg->max_peers < 1) 2383 return NULL; 2384 2385 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2386 if (p2p == NULL) 2387 return NULL; 2388 p2p->cfg = (struct p2p_config *) (p2p + 1); 2389 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2390 if (cfg->dev_name) 2391 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2392 if (cfg->manufacturer) 2393 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2394 if (cfg->model_name) 2395 p2p->cfg->model_name = os_strdup(cfg->model_name); 2396 if (cfg->model_number) 2397 p2p->cfg->model_number = os_strdup(cfg->model_number); 2398 if (cfg->serial_number) 2399 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2400 if (cfg->pref_chan) { 2401 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2402 sizeof(struct p2p_channel)); 2403 if (p2p->cfg->pref_chan) { 2404 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2405 cfg->num_pref_chan * 2406 sizeof(struct p2p_channel)); 2407 } else 2408 p2p->cfg->num_pref_chan = 0; 2409 } 2410 2411 #ifdef ANDROID_P2P 2412 /* 100ms listen time is too less to receive the response frames in some scenarios 2413 * increasing min listen time to 200ms. 2414 */ 2415 p2p->min_disc_int = 2; 2416 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2417 p2p->sd_dev_list = NULL; 2418 #else 2419 p2p->min_disc_int = 1; 2420 #endif 2421 p2p->max_disc_int = 3; 2422 p2p->max_disc_tu = -1; 2423 2424 os_get_random(&p2p->next_tie_breaker, 1); 2425 p2p->next_tie_breaker &= 0x01; 2426 if (cfg->sd_request) 2427 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2428 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2429 if (cfg->concurrent_operations) 2430 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2431 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2432 2433 dl_list_init(&p2p->devices); 2434 2435 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2436 p2p_expiration_timeout, p2p, NULL); 2437 2438 p2p->go_timeout = 100; 2439 p2p->client_timeout = 20; 2440 2441 return p2p; 2442 } 2443 2444 2445 void p2p_deinit(struct p2p_data *p2p) 2446 { 2447 #ifdef CONFIG_WIFI_DISPLAY 2448 wpabuf_free(p2p->wfd_ie_beacon); 2449 wpabuf_free(p2p->wfd_ie_probe_req); 2450 wpabuf_free(p2p->wfd_ie_probe_resp); 2451 wpabuf_free(p2p->wfd_ie_assoc_req); 2452 wpabuf_free(p2p->wfd_ie_invitation); 2453 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2454 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2455 wpabuf_free(p2p->wfd_ie_go_neg); 2456 wpabuf_free(p2p->wfd_dev_info); 2457 wpabuf_free(p2p->wfd_assoc_bssid); 2458 wpabuf_free(p2p->wfd_coupled_sink_info); 2459 #endif /* CONFIG_WIFI_DISPLAY */ 2460 2461 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2462 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2463 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2464 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2465 p2p_flush(p2p); 2466 p2p_free_req_dev_types(p2p); 2467 os_free(p2p->cfg->dev_name); 2468 os_free(p2p->cfg->manufacturer); 2469 os_free(p2p->cfg->model_name); 2470 os_free(p2p->cfg->model_number); 2471 os_free(p2p->cfg->serial_number); 2472 os_free(p2p->cfg->pref_chan); 2473 os_free(p2p->groups); 2474 wpabuf_free(p2p->sd_resp); 2475 os_free(p2p->after_scan_tx); 2476 p2p_remove_wps_vendor_extensions(p2p); 2477 os_free(p2p); 2478 } 2479 2480 2481 void p2p_flush(struct p2p_data *p2p) 2482 { 2483 struct p2p_device *dev, *prev; 2484 p2p_stop_find(p2p); 2485 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2486 list) { 2487 dl_list_del(&dev->list); 2488 p2p_device_free(p2p, dev); 2489 } 2490 #ifdef ANDROID_P2P 2491 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2492 p2p->sd_dev_list = NULL; 2493 #endif 2494 p2p_free_sd_queries(p2p); 2495 os_free(p2p->after_scan_tx); 2496 p2p->after_scan_tx = NULL; 2497 } 2498 2499 2500 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2501 { 2502 struct p2p_device *dev; 2503 2504 dev = p2p_get_device(p2p, addr); 2505 if (dev == NULL) 2506 return -1; 2507 2508 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 2509 2510 if (p2p->go_neg_peer == dev) 2511 p2p->go_neg_peer = NULL; 2512 2513 dev->wps_method = WPS_NOT_READY; 2514 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2515 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2516 2517 /* Check if after_scan_tx is for this peer. If so free it */ 2518 if (p2p->after_scan_tx && 2519 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2520 os_free(p2p->after_scan_tx); 2521 p2p->after_scan_tx = NULL; 2522 } 2523 2524 return 0; 2525 } 2526 2527 2528 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2529 { 2530 os_free(p2p->cfg->dev_name); 2531 if (dev_name) { 2532 p2p->cfg->dev_name = os_strdup(dev_name); 2533 if (p2p->cfg->dev_name == NULL) 2534 return -1; 2535 } else 2536 p2p->cfg->dev_name = NULL; 2537 return 0; 2538 } 2539 2540 2541 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2542 { 2543 os_free(p2p->cfg->manufacturer); 2544 p2p->cfg->manufacturer = NULL; 2545 if (manufacturer) { 2546 p2p->cfg->manufacturer = os_strdup(manufacturer); 2547 if (p2p->cfg->manufacturer == NULL) 2548 return -1; 2549 } 2550 2551 return 0; 2552 } 2553 2554 2555 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2556 { 2557 os_free(p2p->cfg->model_name); 2558 p2p->cfg->model_name = NULL; 2559 if (model_name) { 2560 p2p->cfg->model_name = os_strdup(model_name); 2561 if (p2p->cfg->model_name == NULL) 2562 return -1; 2563 } 2564 2565 return 0; 2566 } 2567 2568 2569 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2570 { 2571 os_free(p2p->cfg->model_number); 2572 p2p->cfg->model_number = NULL; 2573 if (model_number) { 2574 p2p->cfg->model_number = os_strdup(model_number); 2575 if (p2p->cfg->model_number == NULL) 2576 return -1; 2577 } 2578 2579 return 0; 2580 } 2581 2582 2583 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2584 { 2585 os_free(p2p->cfg->serial_number); 2586 p2p->cfg->serial_number = NULL; 2587 if (serial_number) { 2588 p2p->cfg->serial_number = os_strdup(serial_number); 2589 if (p2p->cfg->serial_number == NULL) 2590 return -1; 2591 } 2592 2593 return 0; 2594 } 2595 2596 2597 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2598 { 2599 p2p->cfg->config_methods = config_methods; 2600 } 2601 2602 2603 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2604 { 2605 os_memcpy(p2p->cfg->uuid, uuid, 16); 2606 } 2607 2608 2609 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2610 { 2611 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2612 return 0; 2613 } 2614 2615 2616 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2617 size_t num_dev_types) 2618 { 2619 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2620 num_dev_types = P2P_SEC_DEVICE_TYPES; 2621 p2p->cfg->num_sec_dev_types = num_dev_types; 2622 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2623 return 0; 2624 } 2625 2626 2627 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2628 { 2629 int i; 2630 2631 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2632 wpabuf_free(p2p->wps_vendor_ext[i]); 2633 p2p->wps_vendor_ext[i] = NULL; 2634 } 2635 } 2636 2637 2638 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2639 const struct wpabuf *vendor_ext) 2640 { 2641 int i; 2642 2643 if (vendor_ext == NULL) 2644 return -1; 2645 2646 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2647 if (p2p->wps_vendor_ext[i] == NULL) 2648 break; 2649 } 2650 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2651 return -1; 2652 2653 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2654 if (p2p->wps_vendor_ext[i] == NULL) 2655 return -1; 2656 2657 return 0; 2658 } 2659 2660 2661 int p2p_set_country(struct p2p_data *p2p, const char *country) 2662 { 2663 os_memcpy(p2p->cfg->country, country, 3); 2664 return 0; 2665 } 2666 2667 2668 void p2p_continue_find(struct p2p_data *p2p) 2669 { 2670 struct p2p_device *dev; 2671 #ifdef ANDROID_P2P 2672 int skip=1; 2673 #endif 2674 p2p_set_state(p2p, P2P_SEARCH); 2675 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2676 #ifdef ANDROID_P2P 2677 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2678 * There may be a scenario, where a particular peer device have 2679 * not registered any query response. When we send a SD request to such device, 2680 * no response will be received. And if we continue to get probe responses from that device, 2681 * and if that device happens to be on top in our device list, 2682 * we will always continue to send SD requests always to that peer only. 2683 * We will not be able to send SD requests to other devices in that case. 2684 * This implementation keeps track of last serviced peer device. 2685 * And then takes the next one from the device list, in the next iteration. 2686 */ 2687 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2688 if(skip) { 2689 if ((&dev->list == p2p->sd_dev_list) ) { 2690 skip = 0; 2691 if (dev->list.next == &p2p->devices) 2692 p2p->sd_dev_list = NULL; 2693 } 2694 continue; 2695 } 2696 } 2697 p2p->sd_dev_list = &dev->list; 2698 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2699 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2700 MAC2STR(dev->info.p2p_device_addr)); 2701 #endif 2702 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2703 if (p2p_start_sd(p2p, dev) == 0) 2704 return; 2705 else 2706 break; 2707 } else if (dev->req_config_methods && 2708 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2709 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2710 MACSTR " (config methods 0x%x)", 2711 MAC2STR(dev->info.p2p_device_addr), 2712 dev->req_config_methods); 2713 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2714 return; 2715 } 2716 } 2717 2718 p2p_listen_in_find(p2p, 1); 2719 } 2720 2721 2722 static void p2p_sd_cb(struct p2p_data *p2p, int success) 2723 { 2724 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 2725 success); 2726 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2727 2728 if (!success) { 2729 if (p2p->sd_peer) { 2730 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2731 p2p->sd_peer = NULL; 2732 } 2733 p2p_continue_find(p2p); 2734 return; 2735 } 2736 2737 if (p2p->sd_peer == NULL) { 2738 p2p_dbg(p2p, "No SD peer entry known"); 2739 p2p_continue_find(p2p); 2740 return; 2741 } 2742 2743 /* Wait for response from the peer */ 2744 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2745 p2p_set_timeout(p2p, 0, 200000); 2746 } 2747 2748 2749 /** 2750 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2751 * @p2p: P2P module context from p2p_init() 2752 */ 2753 static void p2p_retry_pd(struct p2p_data *p2p) 2754 { 2755 struct p2p_device *dev; 2756 2757 if (p2p->state != P2P_IDLE) 2758 return; 2759 2760 /* 2761 * Retry the prov disc req attempt only for the peer that the user had 2762 * requested. 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 2772 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 2773 MACSTR " (config methods 0x%x)", 2774 MAC2STR(dev->info.p2p_device_addr), 2775 dev->req_config_methods); 2776 p2p_send_prov_disc_req(p2p, dev, 2777 dev->flags & P2P_DEV_PD_FOR_JOIN, 0); 2778 return; 2779 } 2780 } 2781 2782 2783 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2784 { 2785 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 2786 success); 2787 2788 /* 2789 * Postpone resetting the pending action state till after we actually 2790 * time out. This allows us to take some action like notifying any 2791 * interested parties about no response to the request. 2792 * 2793 * When the timer (below) goes off we check in IDLE, SEARCH, or 2794 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2795 * requests in, if this was still pending and then raise notification. 2796 */ 2797 2798 if (!success) { 2799 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2800 2801 if (p2p->user_initiated_pd && 2802 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2803 { 2804 /* Retry request from timeout to avoid busy loops */ 2805 p2p->pending_action_state = P2P_PENDING_PD; 2806 p2p_set_timeout(p2p, 0, 50000); 2807 } else if (p2p->state != P2P_IDLE) 2808 p2p_continue_find(p2p); 2809 else if (p2p->user_initiated_pd) { 2810 p2p->pending_action_state = P2P_PENDING_PD; 2811 #ifdef ANDROID_P2P 2812 p2p_set_timeout(p2p, 0, 350000); 2813 #else 2814 p2p_set_timeout(p2p, 0, 300000); 2815 #endif 2816 } 2817 return; 2818 } 2819 2820 /* 2821 * This postponing, of resetting pending_action_state, needs to be 2822 * done only for user initiated PD requests and not internal ones. 2823 */ 2824 if (p2p->user_initiated_pd) 2825 p2p->pending_action_state = P2P_PENDING_PD; 2826 else 2827 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2828 2829 /* Wait for response from the peer */ 2830 if (p2p->state == P2P_SEARCH) 2831 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2832 #ifdef ANDROID_P2P 2833 p2p_set_timeout(p2p, 0, 350000); 2834 #else 2835 p2p_set_timeout(p2p, 0, 200000); 2836 #endif 2837 } 2838 2839 2840 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2841 struct os_time *rx_time, int level, const u8 *ies, 2842 size_t ies_len) 2843 { 2844 if (os_time_before(rx_time, &p2p->find_start)) { 2845 /* 2846 * The driver may have cached (e.g., in cfg80211 BSS table) the 2847 * scan results for relatively long time. To avoid reporting 2848 * stale information, update P2P peers only based on results 2849 * that have based on frames received after the last p2p_find 2850 * operation was started. 2851 */ 2852 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 2853 " (rx_time=%u.%06u)", 2854 MAC2STR(bssid), (unsigned int) rx_time->sec, 2855 (unsigned int) rx_time->usec); 2856 return 0; 2857 } 2858 2859 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 2860 2861 return 0; 2862 } 2863 2864 2865 void p2p_scan_res_handled(struct p2p_data *p2p) 2866 { 2867 if (!p2p->p2p_scan_running) { 2868 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 2869 } 2870 p2p->p2p_scan_running = 0; 2871 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2872 2873 if (p2p_run_after_scan(p2p)) 2874 return; 2875 if (p2p->state == P2P_SEARCH) 2876 p2p_continue_find(p2p); 2877 } 2878 2879 2880 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2881 { 2882 u8 *len; 2883 2884 #ifdef CONFIG_WIFI_DISPLAY 2885 if (p2p->wfd_ie_probe_req) 2886 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2887 #endif /* CONFIG_WIFI_DISPLAY */ 2888 2889 len = p2p_buf_add_ie_hdr(ies); 2890 p2p_buf_add_capability(ies, p2p->dev_capab & 2891 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2892 if (dev_id) 2893 p2p_buf_add_device_id(ies, dev_id); 2894 if (p2p->cfg->reg_class && p2p->cfg->channel) 2895 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2896 p2p->cfg->reg_class, 2897 p2p->cfg->channel); 2898 if (p2p->ext_listen_interval) 2899 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2900 p2p->ext_listen_interval); 2901 /* TODO: p2p_buf_add_operating_channel() if GO */ 2902 p2p_buf_update_ie_hdr(ies, len); 2903 } 2904 2905 2906 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2907 { 2908 size_t len = 100; 2909 2910 #ifdef CONFIG_WIFI_DISPLAY 2911 if (p2p && p2p->wfd_ie_probe_req) 2912 len += wpabuf_len(p2p->wfd_ie_probe_req); 2913 #endif /* CONFIG_WIFI_DISPLAY */ 2914 2915 return len; 2916 } 2917 2918 2919 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2920 { 2921 return p2p_attr_text(p2p_ie, buf, end); 2922 } 2923 2924 2925 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2926 { 2927 struct p2p_device *dev = p2p->go_neg_peer; 2928 int timeout; 2929 2930 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 2931 2932 if (dev == NULL) { 2933 p2p_dbg(p2p, "No pending GO Negotiation"); 2934 return; 2935 } 2936 2937 if (success) { 2938 if (dev->flags & P2P_DEV_USER_REJECTED) { 2939 p2p_set_state(p2p, P2P_IDLE); 2940 return; 2941 } 2942 } else if (dev->go_neg_req_sent) { 2943 /* Cancel the increment from p2p_connect_send() on failure */ 2944 dev->go_neg_req_sent--; 2945 } 2946 2947 if (!success && 2948 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2949 !is_zero_ether_addr(dev->member_in_go_dev)) { 2950 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 2951 MAC2STR(dev->info.p2p_device_addr)); 2952 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2953 p2p_send_dev_disc_req(p2p, dev); 2954 return; 2955 } 2956 2957 /* 2958 * Use P2P find, if needed, to find the other device from its listen 2959 * channel. 2960 */ 2961 p2p_set_state(p2p, P2P_CONNECT); 2962 timeout = success ? 500000 : 100000; 2963 if (!success && p2p->go_neg_peer && 2964 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 2965 unsigned int r; 2966 /* 2967 * Peer is expected to wait our response and we will skip the 2968 * listen phase. Add some randomness to the wait time here to 2969 * make it less likely to hit cases where we could end up in 2970 * sync with peer not listening. 2971 */ 2972 os_get_random((u8 *) &r, sizeof(r)); 2973 timeout += r % 100000; 2974 } 2975 p2p_set_timeout(p2p, 0, timeout); 2976 } 2977 2978 2979 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2980 { 2981 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 2982 success); 2983 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2984 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 2985 return; 2986 } 2987 p2p_set_state(p2p, P2P_CONNECT); 2988 p2p_set_timeout(p2p, 0, 500000); 2989 } 2990 2991 2992 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 2993 const u8 *addr) 2994 { 2995 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 2996 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2997 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2998 p2p->go_neg_peer->status); 2999 } else if (success) { 3000 struct p2p_device *dev; 3001 dev = p2p_get_device(p2p, addr); 3002 if (dev && 3003 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 3004 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 3005 } 3006 } 3007 3008 3009 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3010 enum p2p_send_action_result result) 3011 { 3012 struct p2p_device *dev; 3013 3014 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 3015 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3016 if (result == P2P_SEND_ACTION_FAILED) { 3017 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3018 return; 3019 } 3020 if (result == P2P_SEND_ACTION_NO_ACK) { 3021 /* 3022 * It looks like the TX status for GO Negotiation Confirm is 3023 * often showing failure even when the peer has actually 3024 * received the frame. Since the peer may change channels 3025 * immediately after having received the frame, we may not see 3026 * an Ack for retries, so just dropping a single frame may 3027 * trigger this. To allow the group formation to succeed if the 3028 * peer did indeed receive the frame, continue regardless of 3029 * the TX status. 3030 */ 3031 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 3032 } 3033 3034 dev = p2p->go_neg_peer; 3035 if (dev == NULL) 3036 return; 3037 3038 p2p_go_complete(p2p, dev); 3039 } 3040 3041 3042 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3043 const u8 *src, const u8 *bssid, 3044 enum p2p_send_action_result result) 3045 { 3046 enum p2p_pending_action_state state; 3047 int success; 3048 3049 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 3050 " src=" MACSTR " bssid=" MACSTR " result=%d", 3051 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3052 MAC2STR(bssid), result); 3053 success = result == P2P_SEND_ACTION_SUCCESS; 3054 state = p2p->pending_action_state; 3055 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3056 switch (state) { 3057 case P2P_NO_PENDING_ACTION: 3058 if (p2p->after_scan_tx_in_progress) { 3059 p2p->after_scan_tx_in_progress = 0; 3060 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING && 3061 p2p_run_after_scan(p2p)) 3062 break; 3063 if (p2p->state == P2P_SEARCH) { 3064 p2p_dbg(p2p, "Continue find after after_scan_tx completion"); 3065 p2p_continue_find(p2p); 3066 } 3067 } 3068 break; 3069 case P2P_PENDING_GO_NEG_REQUEST: 3070 p2p_go_neg_req_cb(p2p, success); 3071 break; 3072 case P2P_PENDING_GO_NEG_RESPONSE: 3073 p2p_go_neg_resp_cb(p2p, success); 3074 break; 3075 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3076 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3077 break; 3078 case P2P_PENDING_GO_NEG_CONFIRM: 3079 p2p_go_neg_conf_cb(p2p, result); 3080 break; 3081 case P2P_PENDING_SD: 3082 p2p_sd_cb(p2p, success); 3083 break; 3084 case P2P_PENDING_PD: 3085 p2p_prov_disc_cb(p2p, success); 3086 break; 3087 case P2P_PENDING_INVITATION_REQUEST: 3088 p2p_invitation_req_cb(p2p, success); 3089 break; 3090 case P2P_PENDING_INVITATION_RESPONSE: 3091 p2p_invitation_resp_cb(p2p, success); 3092 break; 3093 case P2P_PENDING_DEV_DISC_REQUEST: 3094 p2p_dev_disc_req_cb(p2p, success); 3095 break; 3096 case P2P_PENDING_DEV_DISC_RESPONSE: 3097 p2p_dev_disc_resp_cb(p2p, success); 3098 break; 3099 case P2P_PENDING_GO_DISC_REQ: 3100 p2p_go_disc_req_cb(p2p, success); 3101 break; 3102 } 3103 3104 p2p->after_scan_tx_in_progress = 0; 3105 } 3106 3107 3108 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3109 unsigned int duration) 3110 { 3111 if (freq == p2p->pending_client_disc_freq) { 3112 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3113 p2p->pending_client_disc_freq = 0; 3114 return; 3115 } 3116 3117 if (freq != p2p->pending_listen_freq) { 3118 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3119 freq, duration, p2p->pending_listen_freq); 3120 return; 3121 } 3122 3123 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3124 p2p->pending_listen_sec, p2p->pending_listen_usec, 3125 p2p->pending_listen_freq); 3126 p2p->in_listen = 1; 3127 p2p->drv_in_listen = freq; 3128 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3129 /* 3130 * Add 20 msec extra wait to avoid race condition with driver 3131 * remain-on-channel end event, i.e., give driver more time to 3132 * complete the operation before our timeout expires. 3133 */ 3134 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3135 p2p->pending_listen_usec + 20000); 3136 } 3137 3138 p2p->pending_listen_freq = 0; 3139 } 3140 3141 3142 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3143 { 3144 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3145 p2p->drv_in_listen = 0; 3146 if (p2p->in_listen) 3147 return 0; /* Internal timeout will trigger the next step */ 3148 3149 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3150 if (p2p->go_neg_peer->connect_reqs >= 120) { 3151 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3152 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3153 return 0; 3154 } 3155 3156 p2p_set_state(p2p, P2P_CONNECT); 3157 p2p_connect_send(p2p, p2p->go_neg_peer); 3158 return 1; 3159 } else if (p2p->state == P2P_SEARCH) { 3160 if (p2p->p2p_scan_running) { 3161 /* 3162 * Search is already in progress. This can happen if 3163 * an Action frame RX is reported immediately after 3164 * the end of a remain-on-channel operation and the 3165 * response frame to that is sent using an offchannel 3166 * operation while in p2p_find. Avoid an attempt to 3167 * restart a scan here. 3168 */ 3169 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3170 return 1; 3171 } 3172 if (p2p->pending_listen_freq) { 3173 /* 3174 * Better wait a bit if the driver is unable to start 3175 * offchannel operation for some reason. p2p_search() 3176 * will be started from internal timeout. 3177 */ 3178 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3179 p2p_set_timeout(p2p, 0, 100000); 3180 return 1; 3181 } 3182 if (p2p->search_delay) { 3183 p2p_dbg(p2p, "Delay search operation by %u ms", 3184 p2p->search_delay); 3185 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3186 (p2p->search_delay % 1000) * 1000); 3187 return 1; 3188 } 3189 p2p_search(p2p); 3190 return 1; 3191 } 3192 3193 return 0; 3194 } 3195 3196 3197 static void p2p_timeout_connect(struct p2p_data *p2p) 3198 { 3199 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3200 if (p2p->go_neg_peer && 3201 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3202 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3203 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3204 return; 3205 } 3206 if (p2p->go_neg_peer && 3207 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3208 p2p->go_neg_peer->connect_reqs < 120) { 3209 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3210 p2p_connect_send(p2p, p2p->go_neg_peer); 3211 return; 3212 } 3213 3214 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3215 p2p_listen_in_find(p2p, 0); 3216 } 3217 3218 3219 static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3220 { 3221 if (p2p->go_neg_peer) { 3222 if (p2p->drv_in_listen) { 3223 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3224 return; 3225 } 3226 3227 if (p2p->go_neg_peer->connect_reqs >= 120) { 3228 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3229 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3230 return; 3231 } 3232 3233 p2p_set_state(p2p, P2P_CONNECT); 3234 p2p_connect_send(p2p, p2p->go_neg_peer); 3235 } else 3236 p2p_set_state(p2p, P2P_IDLE); 3237 } 3238 3239 3240 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3241 { 3242 /* 3243 * TODO: could remain constantly in Listen state for some time if there 3244 * are no other concurrent uses for the radio. For now, go to listen 3245 * state once per second to give other uses a chance to use the radio. 3246 */ 3247 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3248 p2p_set_timeout(p2p, 0, 500000); 3249 } 3250 3251 3252 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3253 { 3254 struct p2p_device *dev = p2p->go_neg_peer; 3255 3256 if (dev == NULL) { 3257 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 3258 return; 3259 } 3260 3261 dev->wait_count++; 3262 if (dev->wait_count >= 120) { 3263 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation"); 3264 p2p_go_neg_failed(p2p, dev, -1); 3265 return; 3266 } 3267 3268 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 3269 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3270 p2p_listen_in_find(p2p, 0); 3271 } 3272 3273 3274 static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3275 { 3276 p2p_dbg(p2p, "Service Discovery Query timeout"); 3277 if (p2p->sd_peer) { 3278 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3279 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3280 p2p->sd_peer = NULL; 3281 } 3282 p2p_continue_find(p2p); 3283 } 3284 3285 3286 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3287 { 3288 p2p_dbg(p2p, "Provision Discovery Request timeout"); 3289 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3290 p2p_continue_find(p2p); 3291 } 3292 3293 3294 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3295 { 3296 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3297 3298 /* 3299 * For user initiated PD requests that we have not gotten any responses 3300 * for while in IDLE state, we retry them a couple of times before 3301 * giving up. 3302 */ 3303 if (!p2p->user_initiated_pd) 3304 return; 3305 3306 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 3307 3308 if (p2p->pd_retries) { 3309 p2p->pd_retries--; 3310 p2p_retry_pd(p2p); 3311 } else { 3312 struct p2p_device *dev; 3313 int for_join = 0; 3314 3315 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3316 if (os_memcmp(p2p->pending_pd_devaddr, 3317 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3318 continue; 3319 if (dev->req_config_methods && 3320 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3321 for_join = 1; 3322 } 3323 3324 if (p2p->cfg->prov_disc_fail) 3325 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3326 p2p->pending_pd_devaddr, 3327 for_join ? 3328 P2P_PROV_DISC_TIMEOUT_JOIN : 3329 P2P_PROV_DISC_TIMEOUT); 3330 p2p_reset_pending_pd(p2p); 3331 } 3332 } 3333 3334 3335 static void p2p_timeout_invite(struct p2p_data *p2p) 3336 { 3337 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3338 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3339 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3340 /* 3341 * Better remain on operating channel instead of listen channel 3342 * when running a group. 3343 */ 3344 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 3345 p2p_set_timeout(p2p, 0, 100000); 3346 return; 3347 } 3348 p2p_listen_in_find(p2p, 0); 3349 } 3350 3351 3352 static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3353 { 3354 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3355 p2p_set_state(p2p, P2P_INVITE); 3356 p2p_invite_send(p2p, p2p->invite_peer, 3357 p2p->invite_go_dev_addr); 3358 } else { 3359 if (p2p->invite_peer) { 3360 p2p_dbg(p2p, "Invitation Request retry limit reached"); 3361 if (p2p->cfg->invitation_result) 3362 p2p->cfg->invitation_result( 3363 p2p->cfg->cb_ctx, -1, NULL, NULL, 3364 p2p->invite_peer->info.p2p_device_addr); 3365 } 3366 p2p_set_state(p2p, P2P_IDLE); 3367 } 3368 } 3369 3370 3371 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3372 { 3373 struct p2p_data *p2p = eloop_ctx; 3374 3375 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 3376 3377 p2p->in_listen = 0; 3378 3379 switch (p2p->state) { 3380 case P2P_IDLE: 3381 /* Check if we timed out waiting for PD req */ 3382 if (p2p->pending_action_state == P2P_PENDING_PD) 3383 p2p_timeout_prov_disc_req(p2p); 3384 break; 3385 case P2P_SEARCH: 3386 /* Check if we timed out waiting for PD req */ 3387 if (p2p->pending_action_state == P2P_PENDING_PD) 3388 p2p_timeout_prov_disc_req(p2p); 3389 if (p2p->search_delay && !p2p->in_search_delay) { 3390 p2p_dbg(p2p, "Delay search operation by %u ms", 3391 p2p->search_delay); 3392 p2p->in_search_delay = 1; 3393 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3394 (p2p->search_delay % 1000) * 1000); 3395 break; 3396 } 3397 p2p->in_search_delay = 0; 3398 p2p_search(p2p); 3399 break; 3400 case P2P_CONNECT: 3401 p2p_timeout_connect(p2p); 3402 break; 3403 case P2P_CONNECT_LISTEN: 3404 p2p_timeout_connect_listen(p2p); 3405 break; 3406 case P2P_GO_NEG: 3407 break; 3408 case P2P_LISTEN_ONLY: 3409 /* Check if we timed out waiting for PD req */ 3410 if (p2p->pending_action_state == P2P_PENDING_PD) 3411 p2p_timeout_prov_disc_req(p2p); 3412 3413 if (p2p->ext_listen_only) { 3414 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 3415 p2p->ext_listen_only = 0; 3416 p2p_set_state(p2p, P2P_IDLE); 3417 } 3418 break; 3419 case P2P_WAIT_PEER_CONNECT: 3420 p2p_timeout_wait_peer_connect(p2p); 3421 break; 3422 case P2P_WAIT_PEER_IDLE: 3423 p2p_timeout_wait_peer_idle(p2p); 3424 break; 3425 case P2P_SD_DURING_FIND: 3426 p2p_timeout_sd_during_find(p2p); 3427 break; 3428 case P2P_PROVISIONING: 3429 break; 3430 case P2P_PD_DURING_FIND: 3431 p2p_timeout_prov_disc_during_find(p2p); 3432 break; 3433 case P2P_INVITE: 3434 p2p_timeout_invite(p2p); 3435 break; 3436 case P2P_INVITE_LISTEN: 3437 p2p_timeout_invite_listen(p2p); 3438 break; 3439 case P2P_SEARCH_WHEN_READY: 3440 break; 3441 case P2P_CONTINUE_SEARCH_WHEN_READY: 3442 break; 3443 } 3444 } 3445 3446 3447 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3448 { 3449 struct p2p_device *dev; 3450 3451 dev = p2p_get_device(p2p, peer_addr); 3452 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 3453 MACSTR, MAC2STR(peer_addr)); 3454 if (dev == NULL) { 3455 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 3456 return -1; 3457 } 3458 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3459 dev->flags |= P2P_DEV_USER_REJECTED; 3460 return 0; 3461 } 3462 3463 3464 const char * p2p_wps_method_text(enum p2p_wps_method method) 3465 { 3466 switch (method) { 3467 case WPS_NOT_READY: 3468 return "not-ready"; 3469 case WPS_PIN_DISPLAY: 3470 return "Display"; 3471 case WPS_PIN_KEYPAD: 3472 return "Keypad"; 3473 case WPS_PBC: 3474 return "PBC"; 3475 } 3476 3477 return "??"; 3478 } 3479 3480 3481 static const char * p2p_go_state_text(enum p2p_go_state go_state) 3482 { 3483 switch (go_state) { 3484 case UNKNOWN_GO: 3485 return "unknown"; 3486 case LOCAL_GO: 3487 return "local"; 3488 case REMOTE_GO: 3489 return "remote"; 3490 } 3491 3492 return "??"; 3493 } 3494 3495 3496 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3497 const u8 *addr, int next) 3498 { 3499 struct p2p_device *dev; 3500 3501 if (addr) 3502 dev = p2p_get_device(p2p, addr); 3503 else 3504 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3505 3506 if (dev && next) { 3507 dev = dl_list_first(&dev->list, struct p2p_device, list); 3508 if (&dev->list == &p2p->devices) 3509 dev = NULL; 3510 } 3511 3512 if (dev == NULL) 3513 return NULL; 3514 3515 return &dev->info; 3516 } 3517 3518 3519 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3520 char *buf, size_t buflen) 3521 { 3522 struct p2p_device *dev; 3523 int res; 3524 char *pos, *end; 3525 struct os_time now; 3526 3527 if (info == NULL) 3528 return -1; 3529 3530 dev = (struct p2p_device *) (((u8 *) info) - 3531 offsetof(struct p2p_device, info)); 3532 3533 pos = buf; 3534 end = buf + buflen; 3535 3536 os_get_time(&now); 3537 res = os_snprintf(pos, end - pos, 3538 "age=%d\n" 3539 "listen_freq=%d\n" 3540 "wps_method=%s\n" 3541 "interface_addr=" MACSTR "\n" 3542 "member_in_go_dev=" MACSTR "\n" 3543 "member_in_go_iface=" MACSTR "\n" 3544 "go_neg_req_sent=%d\n" 3545 "go_state=%s\n" 3546 "dialog_token=%u\n" 3547 "intended_addr=" MACSTR "\n" 3548 "country=%c%c\n" 3549 "oper_freq=%d\n" 3550 "req_config_methods=0x%x\n" 3551 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3552 "status=%d\n" 3553 "wait_count=%u\n" 3554 "invitation_reqs=%u\n", 3555 (int) (now.sec - dev->last_seen.sec), 3556 dev->listen_freq, 3557 p2p_wps_method_text(dev->wps_method), 3558 MAC2STR(dev->interface_addr), 3559 MAC2STR(dev->member_in_go_dev), 3560 MAC2STR(dev->member_in_go_iface), 3561 dev->go_neg_req_sent, 3562 p2p_go_state_text(dev->go_state), 3563 dev->dialog_token, 3564 MAC2STR(dev->intended_addr), 3565 dev->country[0] ? dev->country[0] : '_', 3566 dev->country[1] ? dev->country[1] : '_', 3567 dev->oper_freq, 3568 dev->req_config_methods, 3569 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3570 "[PROBE_REQ_ONLY]" : "", 3571 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3572 dev->flags & P2P_DEV_NOT_YET_READY ? 3573 "[NOT_YET_READY]" : "", 3574 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3575 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3576 "", 3577 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3578 "[PD_PEER_DISPLAY]" : "", 3579 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3580 "[PD_PEER_KEYPAD]" : "", 3581 dev->flags & P2P_DEV_USER_REJECTED ? 3582 "[USER_REJECTED]" : "", 3583 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3584 "[PEER_WAITING_RESPONSE]" : "", 3585 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3586 "[PREFER_PERSISTENT_GROUP]" : "", 3587 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3588 "[WAIT_GO_NEG_RESPONSE]" : "", 3589 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3590 "[WAIT_GO_NEG_CONFIRM]" : "", 3591 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3592 "[GROUP_CLIENT_ONLY]" : "", 3593 dev->flags & P2P_DEV_FORCE_FREQ ? 3594 "[FORCE_FREQ]" : "", 3595 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3596 "[PD_FOR_JOIN]" : "", 3597 dev->status, 3598 dev->wait_count, 3599 dev->invitation_reqs); 3600 if (res < 0 || res >= end - pos) 3601 return pos - buf; 3602 pos += res; 3603 3604 if (dev->ext_listen_period) { 3605 res = os_snprintf(pos, end - pos, 3606 "ext_listen_period=%u\n" 3607 "ext_listen_interval=%u\n", 3608 dev->ext_listen_period, 3609 dev->ext_listen_interval); 3610 if (res < 0 || res >= end - pos) 3611 return pos - buf; 3612 pos += res; 3613 } 3614 3615 if (dev->oper_ssid_len) { 3616 res = os_snprintf(pos, end - pos, 3617 "oper_ssid=%s\n", 3618 wpa_ssid_txt(dev->oper_ssid, 3619 dev->oper_ssid_len)); 3620 if (res < 0 || res >= end - pos) 3621 return pos - buf; 3622 pos += res; 3623 } 3624 3625 #ifdef CONFIG_WIFI_DISPLAY 3626 if (dev->info.wfd_subelems) { 3627 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3628 if (res < 0 || res >= end - pos) 3629 return pos - buf; 3630 pos += res; 3631 3632 pos += wpa_snprintf_hex(pos, end - pos, 3633 wpabuf_head(dev->info.wfd_subelems), 3634 wpabuf_len(dev->info.wfd_subelems)); 3635 3636 res = os_snprintf(pos, end - pos, "\n"); 3637 if (res < 0 || res >= end - pos) 3638 return pos - buf; 3639 pos += res; 3640 } 3641 #endif /* CONFIG_WIFI_DISPLAY */ 3642 3643 return pos - buf; 3644 } 3645 3646 3647 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3648 { 3649 return p2p_get_device(p2p, addr) != NULL; 3650 } 3651 3652 3653 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3654 { 3655 if (enabled) { 3656 p2p_dbg(p2p, "Client discoverability enabled"); 3657 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3658 } else { 3659 p2p_dbg(p2p, "Client discoverability disabled"); 3660 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3661 } 3662 } 3663 3664 3665 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3666 u32 duration2, u32 interval2) 3667 { 3668 struct wpabuf *req; 3669 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3670 u8 *len; 3671 3672 req = wpabuf_alloc(100); 3673 if (req == NULL) 3674 return NULL; 3675 3676 if (duration1 || interval1) { 3677 os_memset(&desc1, 0, sizeof(desc1)); 3678 desc1.count_type = 1; 3679 desc1.duration = duration1; 3680 desc1.interval = interval1; 3681 ptr1 = &desc1; 3682 3683 if (duration2 || interval2) { 3684 os_memset(&desc2, 0, sizeof(desc2)); 3685 desc2.count_type = 2; 3686 desc2.duration = duration2; 3687 desc2.interval = interval2; 3688 ptr2 = &desc2; 3689 } 3690 } 3691 3692 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3693 len = p2p_buf_add_ie_hdr(req); 3694 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3695 p2p_buf_update_ie_hdr(req, len); 3696 3697 return req; 3698 } 3699 3700 3701 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3702 const u8 *own_interface_addr, unsigned int freq, 3703 u32 duration1, u32 interval1, u32 duration2, 3704 u32 interval2) 3705 { 3706 struct wpabuf *req; 3707 3708 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 3709 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 3710 "dur2=%u int2=%u", 3711 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3712 freq, duration1, interval1, duration2, interval2); 3713 3714 req = p2p_build_presence_req(duration1, interval1, duration2, 3715 interval2); 3716 if (req == NULL) 3717 return -1; 3718 3719 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3720 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3721 go_interface_addr, 3722 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3723 p2p_dbg(p2p, "Failed to send Action frame"); 3724 } 3725 wpabuf_free(req); 3726 3727 return 0; 3728 } 3729 3730 3731 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3732 size_t noa_len, u8 dialog_token) 3733 { 3734 struct wpabuf *resp; 3735 u8 *len; 3736 3737 resp = wpabuf_alloc(100 + noa_len); 3738 if (resp == NULL) 3739 return NULL; 3740 3741 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3742 len = p2p_buf_add_ie_hdr(resp); 3743 p2p_buf_add_status(resp, status); 3744 if (noa) { 3745 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3746 wpabuf_put_le16(resp, noa_len); 3747 wpabuf_put_data(resp, noa, noa_len); 3748 } else 3749 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3750 p2p_buf_update_ie_hdr(resp, len); 3751 3752 return resp; 3753 } 3754 3755 3756 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3757 const u8 *sa, const u8 *data, size_t len, 3758 int rx_freq) 3759 { 3760 struct p2p_message msg; 3761 u8 status; 3762 struct wpabuf *resp; 3763 size_t g; 3764 struct p2p_group *group = NULL; 3765 int parsed = 0; 3766 u8 noa[50]; 3767 int noa_len; 3768 3769 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 3770 3771 for (g = 0; g < p2p->num_groups; g++) { 3772 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3773 ETH_ALEN) == 0) { 3774 group = p2p->groups[g]; 3775 break; 3776 } 3777 } 3778 if (group == NULL) { 3779 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 3780 MACSTR, MAC2STR(da)); 3781 return; 3782 } 3783 3784 if (p2p_parse(data, len, &msg) < 0) { 3785 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 3786 status = P2P_SC_FAIL_INVALID_PARAMS; 3787 goto fail; 3788 } 3789 parsed = 1; 3790 3791 if (msg.noa == NULL) { 3792 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 3793 status = P2P_SC_FAIL_INVALID_PARAMS; 3794 goto fail; 3795 } 3796 3797 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3798 3799 fail: 3800 if (p2p->cfg->get_noa) 3801 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3802 sizeof(noa)); 3803 else 3804 noa_len = -1; 3805 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3806 noa_len > 0 ? noa_len : 0, 3807 msg.dialog_token); 3808 if (parsed) 3809 p2p_parse_free(&msg); 3810 if (resp == NULL) 3811 return; 3812 3813 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3814 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3815 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3816 p2p_dbg(p2p, "Failed to send Action frame"); 3817 } 3818 wpabuf_free(resp); 3819 } 3820 3821 3822 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3823 const u8 *sa, const u8 *data, size_t len) 3824 { 3825 struct p2p_message msg; 3826 3827 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 3828 3829 if (p2p_parse(data, len, &msg) < 0) { 3830 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 3831 return; 3832 } 3833 3834 if (msg.status == NULL || msg.noa == NULL) { 3835 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 3836 p2p_parse_free(&msg); 3837 return; 3838 } 3839 3840 if (*msg.status) { 3841 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 3842 *msg.status); 3843 p2p_parse_free(&msg); 3844 return; 3845 } 3846 3847 p2p_dbg(p2p, "P2P Presence Request was accepted"); 3848 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3849 msg.noa, msg.noa_len); 3850 /* TODO: process NoA */ 3851 p2p_parse_free(&msg); 3852 } 3853 3854 3855 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3856 { 3857 struct p2p_data *p2p = eloop_ctx; 3858 3859 if (p2p->ext_listen_interval) { 3860 /* Schedule next extended listen timeout */ 3861 eloop_register_timeout(p2p->ext_listen_interval_sec, 3862 p2p->ext_listen_interval_usec, 3863 p2p_ext_listen_timeout, p2p, NULL); 3864 } 3865 3866 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3867 /* 3868 * This should not really happen, but it looks like the Listen 3869 * command may fail is something else (e.g., a scan) was 3870 * running at an inconvenient time. As a workaround, allow new 3871 * Extended Listen operation to be started. 3872 */ 3873 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 3874 p2p->ext_listen_only = 0; 3875 p2p_set_state(p2p, P2P_IDLE); 3876 } 3877 3878 if (p2p->state != P2P_IDLE) { 3879 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 3880 return; 3881 } 3882 3883 p2p_dbg(p2p, "Extended Listen timeout"); 3884 p2p->ext_listen_only = 1; 3885 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3886 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 3887 p2p->ext_listen_only = 0; 3888 } 3889 } 3890 3891 3892 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3893 unsigned int interval) 3894 { 3895 if (period > 65535 || interval > 65535 || period > interval || 3896 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3897 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 3898 period, interval); 3899 return -1; 3900 } 3901 3902 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3903 3904 if (interval == 0) { 3905 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 3906 p2p->ext_listen_period = 0; 3907 p2p->ext_listen_interval = 0; 3908 return 0; 3909 } 3910 3911 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 3912 period, interval); 3913 p2p->ext_listen_period = period; 3914 p2p->ext_listen_interval = interval; 3915 p2p->ext_listen_interval_sec = interval / 1000; 3916 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3917 3918 eloop_register_timeout(p2p->ext_listen_interval_sec, 3919 p2p->ext_listen_interval_usec, 3920 p2p_ext_listen_timeout, p2p, NULL); 3921 3922 return 0; 3923 } 3924 3925 3926 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3927 const u8 *ie, size_t ie_len) 3928 { 3929 struct p2p_message msg; 3930 3931 if (bssid == NULL || ie == NULL) 3932 return; 3933 3934 os_memset(&msg, 0, sizeof(msg)); 3935 if (p2p_parse_ies(ie, ie_len, &msg)) 3936 return; 3937 if (msg.minor_reason_code == NULL) 3938 return; 3939 3940 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 3941 " reason_code=%u minor_reason_code=%u", 3942 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3943 3944 p2p_parse_free(&msg); 3945 } 3946 3947 3948 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3949 const u8 *ie, size_t ie_len) 3950 { 3951 struct p2p_message msg; 3952 3953 if (bssid == NULL || ie == NULL) 3954 return; 3955 3956 os_memset(&msg, 0, sizeof(msg)); 3957 if (p2p_parse_ies(ie, ie_len, &msg)) 3958 return; 3959 if (msg.minor_reason_code == NULL) 3960 return; 3961 3962 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR 3963 " reason_code=%u minor_reason_code=%u", 3964 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3965 3966 p2p_parse_free(&msg); 3967 } 3968 3969 3970 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 3971 { 3972 if (enabled) { 3973 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 3974 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 3975 } else { 3976 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 3977 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 3978 } 3979 } 3980 3981 3982 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 3983 { 3984 if (p2p_channel_to_freq(reg_class, channel) < 0) 3985 return -1; 3986 3987 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 3988 reg_class, channel); 3989 p2p->cfg->reg_class = reg_class; 3990 p2p->cfg->channel = channel; 3991 3992 return 0; 3993 } 3994 3995 3996 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 3997 { 3998 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 3999 if (postfix == NULL) { 4000 p2p->cfg->ssid_postfix_len = 0; 4001 return 0; 4002 } 4003 if (len > sizeof(p2p->cfg->ssid_postfix)) 4004 return -1; 4005 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4006 p2p->cfg->ssid_postfix_len = len; 4007 return 0; 4008 } 4009 4010 4011 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4012 int cfg_op_channel) 4013 { 4014 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 4015 return -1; 4016 4017 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 4018 op_reg_class, op_channel); 4019 p2p->cfg->op_reg_class = op_reg_class; 4020 p2p->cfg->op_channel = op_channel; 4021 p2p->cfg->cfg_op_channel = cfg_op_channel; 4022 return 0; 4023 } 4024 4025 4026 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4027 const struct p2p_channel *pref_chan) 4028 { 4029 struct p2p_channel *n; 4030 4031 if (pref_chan) { 4032 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4033 if (n == NULL) 4034 return -1; 4035 os_memcpy(n, pref_chan, 4036 num_pref_chan * sizeof(struct p2p_channel)); 4037 } else 4038 n = NULL; 4039 4040 os_free(p2p->cfg->pref_chan); 4041 p2p->cfg->pref_chan = n; 4042 p2p->cfg->num_pref_chan = num_pref_chan; 4043 4044 return 0; 4045 } 4046 4047 4048 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4049 u8 *iface_addr) 4050 { 4051 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4052 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4053 return -1; 4054 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4055 return 0; 4056 } 4057 4058 4059 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4060 u8 *dev_addr) 4061 { 4062 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4063 if (dev == NULL) 4064 return -1; 4065 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4066 return 0; 4067 } 4068 4069 4070 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4071 { 4072 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4073 if (is_zero_ether_addr(p2p->peer_filter)) 4074 p2p_dbg(p2p, "Disable peer filter"); 4075 else 4076 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4077 MAC2STR(p2p->peer_filter)); 4078 } 4079 4080 4081 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4082 { 4083 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4084 if (p2p->cross_connect == enabled) 4085 return; 4086 p2p->cross_connect = enabled; 4087 /* TODO: may need to tear down any action group where we are GO(?) */ 4088 } 4089 4090 4091 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4092 { 4093 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4094 if (dev == NULL) 4095 return -1; 4096 if (dev->oper_freq <= 0) 4097 return -1; 4098 return dev->oper_freq; 4099 } 4100 4101 4102 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4103 { 4104 p2p_dbg(p2p, "Intra BSS distribution %s", 4105 enabled ? "enabled" : "disabled"); 4106 p2p->cfg->p2p_intra_bss = enabled; 4107 } 4108 4109 4110 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4111 { 4112 p2p_dbg(p2p, "Update channel list"); 4113 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4114 } 4115 4116 4117 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4118 const u8 *src, const u8 *bssid, const u8 *buf, 4119 size_t len, unsigned int wait_time) 4120 { 4121 if (p2p->p2p_scan_running) { 4122 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes"); 4123 if (p2p->after_scan_tx) { 4124 p2p_dbg(p2p, "Dropped previous pending Action frame TX"); 4125 os_free(p2p->after_scan_tx); 4126 } 4127 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4128 len); 4129 if (p2p->after_scan_tx == NULL) 4130 return -1; 4131 p2p->after_scan_tx->freq = freq; 4132 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4133 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4134 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4135 p2p->after_scan_tx->len = len; 4136 p2p->after_scan_tx->wait_time = wait_time; 4137 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4138 return 0; 4139 } 4140 4141 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4142 buf, len, wait_time); 4143 } 4144 4145 4146 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4147 int freq_overall) 4148 { 4149 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 4150 freq_24, freq_5, freq_overall); 4151 p2p->best_freq_24 = freq_24; 4152 p2p->best_freq_5 = freq_5; 4153 p2p->best_freq_overall = freq_overall; 4154 } 4155 4156 4157 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 4158 { 4159 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 4160 p2p->own_freq_preference = freq; 4161 } 4162 4163 4164 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4165 { 4166 if (p2p == NULL || p2p->go_neg_peer == NULL) 4167 return NULL; 4168 return p2p->go_neg_peer->info.p2p_device_addr; 4169 } 4170 4171 4172 const struct p2p_peer_info * 4173 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4174 { 4175 struct p2p_device *dev; 4176 4177 if (addr) { 4178 dev = p2p_get_device(p2p, addr); 4179 if (!dev) 4180 return NULL; 4181 4182 if (!next) { 4183 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4184 return NULL; 4185 4186 return &dev->info; 4187 } else { 4188 do { 4189 dev = dl_list_first(&dev->list, 4190 struct p2p_device, 4191 list); 4192 if (&dev->list == &p2p->devices) 4193 return NULL; 4194 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4195 } 4196 } else { 4197 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4198 if (!dev) 4199 return NULL; 4200 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4201 dev = dl_list_first(&dev->list, 4202 struct p2p_device, 4203 list); 4204 if (&dev->list == &p2p->devices) 4205 return NULL; 4206 } 4207 } 4208 4209 return &dev->info; 4210 } 4211 4212 #ifdef ANDROID_P2P 4213 int p2p_search_in_progress(struct p2p_data *p2p) 4214 { 4215 if (p2p == NULL) 4216 return 0; 4217 4218 return p2p->state == P2P_SEARCH; 4219 } 4220 #endif 4221 4222 int p2p_in_progress(struct p2p_data *p2p) 4223 { 4224 if (p2p == NULL) 4225 return 0; 4226 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4227 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4228 return 2; 4229 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4230 } 4231 4232 4233 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4234 u8 client_timeout) 4235 { 4236 if (p2p) { 4237 p2p->go_timeout = go_timeout; 4238 p2p->client_timeout = client_timeout; 4239 } 4240 } 4241 4242 4243 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4244 { 4245 if (p2p && p2p->search_delay < delay) 4246 p2p->search_delay = delay; 4247 } 4248 4249 4250 #ifdef CONFIG_WIFI_DISPLAY 4251 4252 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4253 { 4254 size_t g; 4255 struct p2p_group *group; 4256 4257 for (g = 0; g < p2p->num_groups; g++) { 4258 group = p2p->groups[g]; 4259 p2p_group_update_ies(group); 4260 } 4261 } 4262 4263 4264 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4265 { 4266 wpabuf_free(p2p->wfd_ie_beacon); 4267 p2p->wfd_ie_beacon = ie; 4268 p2p_update_wfd_ie_groups(p2p); 4269 return 0; 4270 } 4271 4272 4273 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4274 { 4275 wpabuf_free(p2p->wfd_ie_probe_req); 4276 p2p->wfd_ie_probe_req = ie; 4277 return 0; 4278 } 4279 4280 4281 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4282 { 4283 wpabuf_free(p2p->wfd_ie_probe_resp); 4284 p2p->wfd_ie_probe_resp = ie; 4285 p2p_update_wfd_ie_groups(p2p); 4286 return 0; 4287 } 4288 4289 4290 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4291 { 4292 wpabuf_free(p2p->wfd_ie_assoc_req); 4293 p2p->wfd_ie_assoc_req = ie; 4294 return 0; 4295 } 4296 4297 4298 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4299 { 4300 wpabuf_free(p2p->wfd_ie_invitation); 4301 p2p->wfd_ie_invitation = ie; 4302 return 0; 4303 } 4304 4305 4306 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4307 { 4308 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4309 p2p->wfd_ie_prov_disc_req = ie; 4310 return 0; 4311 } 4312 4313 4314 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4315 { 4316 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4317 p2p->wfd_ie_prov_disc_resp = ie; 4318 return 0; 4319 } 4320 4321 4322 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4323 { 4324 wpabuf_free(p2p->wfd_ie_go_neg); 4325 p2p->wfd_ie_go_neg = ie; 4326 return 0; 4327 } 4328 4329 4330 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4331 { 4332 wpabuf_free(p2p->wfd_dev_info); 4333 if (elem) { 4334 p2p->wfd_dev_info = wpabuf_dup(elem); 4335 if (p2p->wfd_dev_info == NULL) 4336 return -1; 4337 } else 4338 p2p->wfd_dev_info = NULL; 4339 4340 return 0; 4341 } 4342 4343 4344 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4345 { 4346 wpabuf_free(p2p->wfd_assoc_bssid); 4347 if (elem) { 4348 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4349 if (p2p->wfd_assoc_bssid == NULL) 4350 return -1; 4351 } else 4352 p2p->wfd_assoc_bssid = NULL; 4353 4354 return 0; 4355 } 4356 4357 4358 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4359 const struct wpabuf *elem) 4360 { 4361 wpabuf_free(p2p->wfd_coupled_sink_info); 4362 if (elem) { 4363 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4364 if (p2p->wfd_coupled_sink_info == NULL) 4365 return -1; 4366 } else 4367 p2p->wfd_coupled_sink_info = NULL; 4368 4369 return 0; 4370 } 4371 4372 #endif /* CONFIG_WIFI_DISPLAY */ 4373 4374 4375 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4376 int max_disc_tu) 4377 { 4378 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4379 return -1; 4380 4381 p2p->min_disc_int = min_disc_int; 4382 p2p->max_disc_int = max_disc_int; 4383 p2p->max_disc_tu = max_disc_tu; 4384 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 4385 min_disc_int, max_disc_int, max_disc_tu); 4386 4387 return 0; 4388 } 4389 4390 4391 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 4392 { 4393 va_list ap; 4394 char buf[500]; 4395 4396 if (!p2p->cfg->debug_print) 4397 return; 4398 4399 va_start(ap, fmt); 4400 vsnprintf(buf, sizeof(buf), fmt, ap); 4401 buf[sizeof(buf) - 1] = '\0'; 4402 va_end(ap); 4403 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 4404 } 4405 4406 4407 void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 4408 { 4409 va_list ap; 4410 char buf[500]; 4411 4412 if (!p2p->cfg->debug_print) 4413 return; 4414 4415 va_start(ap, fmt); 4416 vsnprintf(buf, sizeof(buf), fmt, ap); 4417 buf[sizeof(buf) - 1] = '\0'; 4418 va_end(ap); 4419 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 4420 } 4421 4422 4423 void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 4424 { 4425 va_list ap; 4426 char buf[500]; 4427 4428 if (!p2p->cfg->debug_print) 4429 return; 4430 4431 va_start(ap, fmt); 4432 vsnprintf(buf, sizeof(buf), fmt, ap); 4433 buf[sizeof(buf) - 1] = '\0'; 4434 va_end(ap); 4435 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 4436 } 4437
