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/defs.h" 14 #include "common/ieee802_11_defs.h" 15 #include "common/ieee802_11_common.h" 16 #include "common/wpa_ctrl.h" 17 #include "crypto/sha256.h" 18 #include "crypto/crypto.h" 19 #include "wps/wps_i.h" 20 #include "p2p_i.h" 21 #include "p2p.h" 22 23 24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 27 const u8 *sa, const u8 *data, size_t len, 28 int rx_freq); 29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 30 const u8 *sa, const u8 *data, 31 size_t len); 32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 34 35 36 /* 37 * p2p_scan recovery timeout 38 * 39 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 40 * timeout for this to avoid hitting P2P timeout unnecessarily. 41 */ 42 #define P2P_SCAN_TIMEOUT 35 43 44 /** 45 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 46 * entries will be removed 47 */ 48 #ifndef P2P_PEER_EXPIRATION_AGE 49 #define P2P_PEER_EXPIRATION_AGE 60 50 #endif /* P2P_PEER_EXPIRATION_AGE */ 51 52 53 void p2p_expire_peers(struct p2p_data *p2p) 54 { 55 struct p2p_device *dev, *n; 56 struct os_reltime now; 57 size_t i; 58 59 os_get_reltime(&now); 60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 62 continue; 63 64 if (dev == p2p->go_neg_peer) { 65 /* 66 * GO Negotiation is in progress with the peer, so 67 * don't expire the peer entry until GO Negotiation 68 * fails or times out. 69 */ 70 continue; 71 } 72 73 if (p2p->cfg->go_connected && 74 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 75 dev->info.p2p_device_addr)) { 76 /* 77 * We are connected as a client to a group in which the 78 * peer is the GO, so do not expire the peer entry. 79 */ 80 os_get_reltime(&dev->last_seen); 81 continue; 82 } 83 84 for (i = 0; i < p2p->num_groups; i++) { 85 if (p2p_group_is_client_connected( 86 p2p->groups[i], dev->info.p2p_device_addr)) 87 break; 88 } 89 if (i < p2p->num_groups) { 90 /* 91 * The peer is connected as a client in a group where 92 * we are the GO, so do not expire the peer entry. 93 */ 94 os_get_reltime(&dev->last_seen); 95 continue; 96 } 97 98 p2p_dbg(p2p, "Expiring old peer entry " MACSTR, 99 MAC2STR(dev->info.p2p_device_addr)); 100 dl_list_del(&dev->list); 101 p2p_device_free(p2p, dev); 102 } 103 } 104 105 106 static const char * p2p_state_txt(int state) 107 { 108 switch (state) { 109 case P2P_IDLE: 110 return "IDLE"; 111 case P2P_SEARCH: 112 return "SEARCH"; 113 case P2P_CONNECT: 114 return "CONNECT"; 115 case P2P_CONNECT_LISTEN: 116 return "CONNECT_LISTEN"; 117 case P2P_GO_NEG: 118 return "GO_NEG"; 119 case P2P_LISTEN_ONLY: 120 return "LISTEN_ONLY"; 121 case P2P_WAIT_PEER_CONNECT: 122 return "WAIT_PEER_CONNECT"; 123 case P2P_WAIT_PEER_IDLE: 124 return "WAIT_PEER_IDLE"; 125 case P2P_SD_DURING_FIND: 126 return "SD_DURING_FIND"; 127 case P2P_PROVISIONING: 128 return "PROVISIONING"; 129 case P2P_PD_DURING_FIND: 130 return "PD_DURING_FIND"; 131 case P2P_INVITE: 132 return "INVITE"; 133 case P2P_INVITE_LISTEN: 134 return "INVITE_LISTEN"; 135 default: 136 return "?"; 137 } 138 } 139 140 141 const char * p2p_get_state_txt(struct p2p_data *p2p) 142 { 143 return p2p_state_txt(p2p->state); 144 } 145 146 147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p) 148 { 149 return p2p ? p2p->p2ps_adv_list : NULL; 150 } 151 152 153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr) 154 { 155 if (p2p && intended_addr) 156 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN); 157 } 158 159 160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 161 { 162 struct p2p_device *dev = NULL; 163 164 if (!addr || !p2p) 165 return 0; 166 167 dev = p2p_get_device(p2p, addr); 168 if (dev) 169 return dev->wps_prov_info; 170 else 171 return 0; 172 } 173 174 175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 176 { 177 struct p2p_device *dev = NULL; 178 179 if (!addr || !p2p) 180 return; 181 182 dev = p2p_get_device(p2p, addr); 183 if (dev) 184 dev->wps_prov_info = 0; 185 } 186 187 188 void p2p_set_state(struct p2p_data *p2p, int new_state) 189 { 190 p2p_dbg(p2p, "State %s -> %s", 191 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 192 p2p->state = new_state; 193 194 if (new_state == P2P_IDLE && p2p->pending_channel) { 195 p2p_dbg(p2p, "Apply change in listen channel"); 196 p2p->cfg->reg_class = p2p->pending_reg_class; 197 p2p->cfg->channel = p2p->pending_channel; 198 p2p->pending_reg_class = 0; 199 p2p->pending_channel = 0; 200 } 201 } 202 203 204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 205 { 206 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec", 207 p2p_state_txt(p2p->state), sec, usec); 208 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 209 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 210 } 211 212 213 void p2p_clear_timeout(struct p2p_data *p2p) 214 { 215 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state)); 216 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 217 } 218 219 220 void p2p_go_neg_failed(struct p2p_data *p2p, int status) 221 { 222 struct p2p_go_neg_results res; 223 struct p2p_device *peer = p2p->go_neg_peer; 224 225 if (!peer) 226 return; 227 228 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 229 if (p2p->state != P2P_SEARCH) { 230 /* 231 * Clear timeouts related to GO Negotiation if no new p2p_find 232 * has been started. 233 */ 234 p2p_clear_timeout(p2p); 235 p2p_set_state(p2p, P2P_IDLE); 236 } 237 238 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 239 peer->wps_method = WPS_NOT_READY; 240 peer->oob_pw_id = 0; 241 wpabuf_free(peer->go_neg_conf); 242 peer->go_neg_conf = NULL; 243 p2p->go_neg_peer = NULL; 244 245 os_memset(&res, 0, sizeof(res)); 246 res.status = status; 247 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 248 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 249 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 250 } 251 252 253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 254 { 255 unsigned int r, tu; 256 int freq; 257 struct wpabuf *ies; 258 259 p2p_dbg(p2p, "Starting short listen state (state=%s)", 260 p2p_state_txt(p2p->state)); 261 262 if (p2p->pending_listen_freq) { 263 /* We have a pending p2p_listen request */ 264 p2p_dbg(p2p, "p2p_listen command pending already"); 265 return; 266 } 267 268 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 269 if (freq < 0) { 270 p2p_dbg(p2p, "Unknown regulatory class/channel"); 271 return; 272 } 273 274 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 275 r = 0; 276 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 277 p2p->min_disc_int) * 100; 278 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 279 tu = p2p->max_disc_tu; 280 if (!dev_disc && tu < 100) 281 tu = 100; /* Need to wait in non-device discovery use cases */ 282 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 283 tu = p2p->cfg->max_listen * 1000 / 1024; 284 285 if (tu == 0) { 286 p2p_dbg(p2p, "Skip listen state since duration was 0 TU"); 287 p2p_set_timeout(p2p, 0, 0); 288 return; 289 } 290 291 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 292 if (ies == NULL) 293 return; 294 295 p2p->pending_listen_freq = freq; 296 p2p->pending_listen_sec = 0; 297 p2p->pending_listen_usec = 1024 * tu; 298 299 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 300 ies) < 0) { 301 p2p_dbg(p2p, "Failed to start listen mode"); 302 p2p->pending_listen_freq = 0; 303 } 304 wpabuf_free(ies); 305 } 306 307 308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 309 { 310 int freq; 311 struct wpabuf *ies; 312 313 p2p_dbg(p2p, "Going to listen(only) state"); 314 315 if (p2p->pending_listen_freq) { 316 /* We have a pending p2p_listen request */ 317 p2p_dbg(p2p, "p2p_listen command pending already"); 318 return -1; 319 } 320 321 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 322 if (freq < 0) { 323 p2p_dbg(p2p, "Unknown regulatory class/channel"); 324 return -1; 325 } 326 327 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, NULL, 0); 341 if (ies == NULL) 342 return -1; 343 344 p2p->pending_listen_freq = freq; 345 346 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 347 p2p_dbg(p2p, "Failed to start listen mode"); 348 p2p->pending_listen_freq = 0; 349 wpabuf_free(ies); 350 return -1; 351 } 352 wpabuf_free(ies); 353 354 p2p_set_state(p2p, P2P_LISTEN_ONLY); 355 356 return 0; 357 } 358 359 360 static void p2p_device_clear_reported(struct p2p_data *p2p) 361 { 362 struct p2p_device *dev; 363 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 364 dev->flags &= ~P2P_DEV_REPORTED; 365 dev->sd_reqs = 0; 366 } 367 } 368 369 370 /** 371 * p2p_get_device - Fetch a peer entry 372 * @p2p: P2P module context from p2p_init() 373 * @addr: P2P Device Address of the peer 374 * Returns: Pointer to the device entry or %NULL if not found 375 */ 376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 377 { 378 struct p2p_device *dev; 379 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 380 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 381 return dev; 382 } 383 return NULL; 384 } 385 386 387 /** 388 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 389 * @p2p: P2P module context from p2p_init() 390 * @addr: P2P Interface Address of the peer 391 * Returns: Pointer to the device entry or %NULL if not found 392 */ 393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 394 const u8 *addr) 395 { 396 struct p2p_device *dev; 397 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 398 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 399 return dev; 400 } 401 return NULL; 402 } 403 404 405 /** 406 * p2p_create_device - Create a peer entry 407 * @p2p: P2P module context from p2p_init() 408 * @addr: P2P Device Address of the peer 409 * Returns: Pointer to the device entry or %NULL on failure 410 * 411 * If there is already an entry for the peer, it will be returned instead of 412 * creating a new one. 413 */ 414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 415 const u8 *addr) 416 { 417 struct p2p_device *dev, *oldest = NULL; 418 size_t count = 0; 419 420 dev = p2p_get_device(p2p, addr); 421 if (dev) 422 return dev; 423 424 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 425 count++; 426 if (oldest == NULL || 427 os_reltime_before(&dev->last_seen, &oldest->last_seen)) 428 oldest = dev; 429 } 430 if (count + 1 > p2p->cfg->max_peers && oldest) { 431 p2p_dbg(p2p, 432 "Remove oldest peer entry to make room for a new peer " 433 MACSTR, MAC2STR(oldest->info.p2p_device_addr)); 434 dl_list_del(&oldest->list); 435 p2p_device_free(p2p, oldest); 436 } 437 438 dev = os_zalloc(sizeof(*dev)); 439 if (dev == NULL) 440 return NULL; 441 dl_list_add(&p2p->devices, &dev->list); 442 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 443 444 return dev; 445 } 446 447 448 static void p2p_copy_client_info(struct p2p_device *dev, 449 struct p2p_client_info *cli) 450 { 451 p2p_copy_filter_devname(dev->info.device_name, 452 sizeof(dev->info.device_name), 453 cli->dev_name, cli->dev_name_len); 454 dev->info.dev_capab = cli->dev_capab; 455 dev->info.config_methods = cli->config_methods; 456 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 457 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 458 if (dev->info.wps_sec_dev_type_list_len > WPS_SEC_DEV_TYPE_MAX_LEN) 459 dev->info.wps_sec_dev_type_list_len = WPS_SEC_DEV_TYPE_MAX_LEN; 460 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 461 dev->info.wps_sec_dev_type_list_len); 462 } 463 464 465 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 466 const u8 *go_interface_addr, int freq, 467 const u8 *gi, size_t gi_len, 468 struct os_reltime *rx_time) 469 { 470 struct p2p_group_info info; 471 size_t c; 472 struct p2p_device *dev; 473 474 if (gi == NULL) 475 return 0; 476 477 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 478 return -1; 479 480 /* 481 * Clear old data for this group; if the devices are still in the 482 * group, the information will be restored in the loop following this. 483 */ 484 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 485 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 486 ETH_ALEN) == 0) { 487 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 488 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 489 } 490 } 491 492 for (c = 0; c < info.num_clients; c++) { 493 struct p2p_client_info *cli = &info.client[c]; 494 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 495 ETH_ALEN) == 0) 496 continue; /* ignore our own entry */ 497 dev = p2p_get_device(p2p, cli->p2p_device_addr); 498 if (dev) { 499 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 500 P2P_DEV_PROBE_REQ_ONLY)) { 501 /* 502 * Update information since we have not 503 * received this directly from the client. 504 */ 505 p2p_copy_client_info(dev, cli); 506 } else { 507 /* 508 * Need to update P2P Client Discoverability 509 * flag since it is valid only in P2P Group 510 * Info attribute. 511 */ 512 dev->info.dev_capab &= 513 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 514 dev->info.dev_capab |= 515 cli->dev_capab & 516 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 517 } 518 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 519 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 520 } 521 } else { 522 dev = p2p_create_device(p2p, cli->p2p_device_addr); 523 if (dev == NULL) 524 continue; 525 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 526 p2p_copy_client_info(dev, cli); 527 dev->oper_freq = freq; 528 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 529 dev->info.p2p_device_addr, 530 &dev->info, 1); 531 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 532 } 533 534 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 535 ETH_ALEN); 536 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 537 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 538 os_memcpy(dev->member_in_go_iface, go_interface_addr, 539 ETH_ALEN); 540 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT; 541 } 542 543 return 0; 544 } 545 546 547 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev, 548 int probe_req, const struct p2p_message *msg) 549 { 550 os_memcpy(dev->info.device_name, msg->device_name, 551 sizeof(dev->info.device_name)); 552 553 if (msg->manufacturer && 554 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 555 os_memset(dev->info.manufacturer, 0, 556 sizeof(dev->info.manufacturer)); 557 os_memcpy(dev->info.manufacturer, msg->manufacturer, 558 msg->manufacturer_len); 559 } 560 561 if (msg->model_name && 562 msg->model_name_len < sizeof(dev->info.model_name)) { 563 os_memset(dev->info.model_name, 0, 564 sizeof(dev->info.model_name)); 565 os_memcpy(dev->info.model_name, msg->model_name, 566 msg->model_name_len); 567 } 568 569 if (msg->model_number && 570 msg->model_number_len < sizeof(dev->info.model_number)) { 571 os_memset(dev->info.model_number, 0, 572 sizeof(dev->info.model_number)); 573 os_memcpy(dev->info.model_number, msg->model_number, 574 msg->model_number_len); 575 } 576 577 if (msg->serial_number && 578 msg->serial_number_len < sizeof(dev->info.serial_number)) { 579 os_memset(dev->info.serial_number, 0, 580 sizeof(dev->info.serial_number)); 581 os_memcpy(dev->info.serial_number, msg->serial_number, 582 msg->serial_number_len); 583 } 584 585 if (msg->pri_dev_type) 586 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 587 sizeof(dev->info.pri_dev_type)); 588 else if (msg->wps_pri_dev_type) 589 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 590 sizeof(dev->info.pri_dev_type)); 591 592 if (msg->wps_sec_dev_type_list) { 593 os_memcpy(dev->info.wps_sec_dev_type_list, 594 msg->wps_sec_dev_type_list, 595 msg->wps_sec_dev_type_list_len); 596 dev->info.wps_sec_dev_type_list_len = 597 msg->wps_sec_dev_type_list_len; 598 } 599 600 if (msg->capability) { 601 /* 602 * P2P Client Discoverability bit is reserved in all frames 603 * that use this function, so do not change its value here. 604 */ 605 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 606 dev->info.dev_capab |= msg->capability[0] & 607 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 608 dev->info.group_capab = msg->capability[1]; 609 } 610 611 if (msg->ext_listen_timing) { 612 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 613 dev->ext_listen_interval = 614 WPA_GET_LE16(msg->ext_listen_timing + 2); 615 } 616 617 if (!probe_req) { 618 u16 new_config_methods; 619 new_config_methods = msg->config_methods ? 620 msg->config_methods : msg->wps_config_methods; 621 if (new_config_methods && 622 dev->info.config_methods != new_config_methods) { 623 p2p_dbg(p2p, "Update peer " MACSTR 624 " config_methods 0x%x -> 0x%x", 625 MAC2STR(dev->info.p2p_device_addr), 626 dev->info.config_methods, 627 new_config_methods); 628 dev->info.config_methods = new_config_methods; 629 } 630 } 631 } 632 633 634 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies, 635 size_t ies_len) 636 { 637 const u8 *pos, *end; 638 u8 id, len; 639 640 wpabuf_free(dev->info.vendor_elems); 641 dev->info.vendor_elems = NULL; 642 643 end = ies + ies_len; 644 645 for (pos = ies; end - pos > 1; pos += len) { 646 id = *pos++; 647 len = *pos++; 648 649 if (len > end - pos) 650 break; 651 652 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3) 653 continue; 654 655 if (len >= 4) { 656 u32 type = WPA_GET_BE32(pos); 657 658 if (type == WPA_IE_VENDOR_TYPE || 659 type == WMM_IE_VENDOR_TYPE || 660 type == WPS_IE_VENDOR_TYPE || 661 type == P2P_IE_VENDOR_TYPE || 662 type == WFD_IE_VENDOR_TYPE) 663 continue; 664 } 665 666 /* Unknown vendor element - make raw IE data available */ 667 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0) 668 break; 669 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len); 670 if (wpabuf_size(dev->info.vendor_elems) > 2000) 671 break; 672 } 673 } 674 675 676 static int p2p_compare_wfd_info(struct p2p_device *dev, 677 const struct p2p_message *msg) 678 { 679 if (dev->info.wfd_subelems && msg->wfd_subelems) { 680 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used) 681 return 1; 682 683 return os_memcmp(dev->info.wfd_subelems->buf, 684 msg->wfd_subelems->buf, 685 dev->info.wfd_subelems->used); 686 } 687 if (dev->info.wfd_subelems || msg->wfd_subelems) 688 return 1; 689 690 return 0; 691 } 692 693 694 /** 695 * p2p_add_device - Add peer entries based on scan results or P2P frames 696 * @p2p: P2P module context from p2p_init() 697 * @addr: Source address of Beacon or Probe Response frame (may be either 698 * P2P Device Address or P2P Interface Address) 699 * @level: Signal level (signal strength of the received frame from the peer) 700 * @freq: Frequency on which the Beacon or Probe Response frame was received 701 * @rx_time: Time when the result was received 702 * @ies: IEs from the Beacon or Probe Response frame 703 * @ies_len: Length of ies buffer in octets 704 * @scan_res: Whether this was based on scan results 705 * Returns: 0 on success, -1 on failure 706 * 707 * If the scan result is for a GO, the clients in the group will also be added 708 * to the peer table. This function can also be used with some other frames 709 * like Provision Discovery Request that contains P2P Capability and P2P Device 710 * Info attributes. 711 */ 712 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 713 struct os_reltime *rx_time, int level, const u8 *ies, 714 size_t ies_len, int scan_res) 715 { 716 struct p2p_device *dev; 717 struct p2p_message msg; 718 const u8 *p2p_dev_addr; 719 int wfd_changed; 720 int dev_name_changed; 721 int i; 722 struct os_reltime time_now; 723 724 os_memset(&msg, 0, sizeof(msg)); 725 if (p2p_parse_ies(ies, ies_len, &msg)) { 726 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry"); 727 p2p_parse_free(&msg); 728 return -1; 729 } 730 731 if (msg.p2p_device_addr) 732 p2p_dev_addr = msg.p2p_device_addr; 733 else if (msg.device_id) 734 p2p_dev_addr = msg.device_id; 735 else { 736 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 737 p2p_parse_free(&msg); 738 return -1; 739 } 740 741 if (!is_zero_ether_addr(p2p->peer_filter) && 742 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 743 p2p_dbg(p2p, "Do not add peer filter for " MACSTR 744 " due to peer filter", MAC2STR(p2p_dev_addr)); 745 p2p_parse_free(&msg); 746 return 0; 747 } 748 749 dev = p2p_create_device(p2p, p2p_dev_addr); 750 if (dev == NULL) { 751 p2p_parse_free(&msg); 752 return -1; 753 } 754 755 if (rx_time == NULL) { 756 os_get_reltime(&time_now); 757 rx_time = &time_now; 758 } 759 760 /* 761 * Update the device entry only if the new peer 762 * entry is newer than the one previously stored, or if 763 * the device was previously seen as a P2P Client in a group 764 * and the new entry isn't older than a threshold. 765 */ 766 if (dev->last_seen.sec > 0 && 767 os_reltime_before(rx_time, &dev->last_seen) && 768 (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) || 769 os_reltime_expired(&dev->last_seen, rx_time, 770 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) { 771 p2p_dbg(p2p, 772 "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)", 773 (unsigned int) rx_time->sec, 774 (unsigned int) rx_time->usec, 775 (unsigned int) dev->last_seen.sec, 776 (unsigned int) dev->last_seen.usec, 777 dev->flags); 778 p2p_parse_free(&msg); 779 return -1; 780 } 781 782 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 783 784 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY | 785 P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT); 786 787 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 788 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 789 if (msg.ssid && 790 msg.ssid[1] <= sizeof(dev->oper_ssid) && 791 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 792 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 793 != 0)) { 794 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 795 dev->oper_ssid_len = msg.ssid[1]; 796 } 797 798 wpabuf_free(dev->info.p2ps_instance); 799 dev->info.p2ps_instance = NULL; 800 if (msg.adv_service_instance && msg.adv_service_instance_len) 801 dev->info.p2ps_instance = wpabuf_alloc_copy( 802 msg.adv_service_instance, msg.adv_service_instance_len); 803 804 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 805 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 806 int ds_freq; 807 if (*msg.ds_params == 14) 808 ds_freq = 2484; 809 else 810 ds_freq = 2407 + *msg.ds_params * 5; 811 if (freq != ds_freq) { 812 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz", 813 freq, ds_freq); 814 freq = ds_freq; 815 } 816 } 817 818 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 819 p2p_dbg(p2p, "Update Listen frequency based on scan results (" 820 MACSTR " %d -> %d MHz (DS param %d)", 821 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 822 freq, msg.ds_params ? *msg.ds_params : -1); 823 } 824 if (scan_res) { 825 dev->listen_freq = freq; 826 if (msg.group_info) 827 dev->oper_freq = freq; 828 } 829 dev->info.level = level; 830 831 dev_name_changed = os_strncmp(dev->info.device_name, msg.device_name, 832 WPS_DEV_NAME_MAX_LEN) != 0; 833 834 p2p_copy_wps_info(p2p, dev, 0, &msg); 835 836 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 837 wpabuf_free(dev->info.wps_vendor_ext[i]); 838 dev->info.wps_vendor_ext[i] = NULL; 839 } 840 841 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 842 if (msg.wps_vendor_ext[i] == NULL) 843 break; 844 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 845 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 846 if (dev->info.wps_vendor_ext[i] == NULL) 847 break; 848 } 849 850 wfd_changed = p2p_compare_wfd_info(dev, &msg); 851 852 if (wfd_changed) { 853 wpabuf_free(dev->info.wfd_subelems); 854 if (msg.wfd_subelems) 855 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 856 else 857 dev->info.wfd_subelems = NULL; 858 } 859 860 if (scan_res) { 861 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 862 msg.group_info, msg.group_info_len, 863 rx_time); 864 } 865 866 p2p_parse_free(&msg); 867 868 p2p_update_peer_vendor_elems(dev, ies, ies_len); 869 870 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed && 871 !dev_name_changed && 872 (!msg.adv_service_instance || 873 (dev->flags & P2P_DEV_P2PS_REPORTED))) 874 return 0; 875 876 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)", 877 freq, (unsigned int) rx_time->sec, 878 (unsigned int) rx_time->usec); 879 if (dev->flags & P2P_DEV_USER_REJECTED) { 880 p2p_dbg(p2p, "Do not report rejected device"); 881 return 0; 882 } 883 884 if (dev->info.config_methods == 0 && 885 (freq == 2412 || freq == 2437 || freq == 2462)) { 886 /* 887 * If we have only seen a Beacon frame from a GO, we do not yet 888 * know what WPS config methods it supports. Since some 889 * applications use config_methods value from P2P-DEVICE-FOUND 890 * events, postpone reporting this peer until we've fully 891 * discovered its capabilities. 892 * 893 * At least for now, do this only if the peer was detected on 894 * one of the social channels since that peer can be easily be 895 * found again and there are no limitations of having to use 896 * passive scan on this channels, so this can be done through 897 * Probe Response frame that includes the config_methods 898 * information. 899 */ 900 p2p_dbg(p2p, "Do not report peer " MACSTR 901 " with unknown config methods", MAC2STR(addr)); 902 return 0; 903 } 904 905 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 906 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 907 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 908 909 if (msg.adv_service_instance) 910 dev->flags |= P2P_DEV_P2PS_REPORTED; 911 912 return 0; 913 } 914 915 916 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 917 { 918 int i; 919 920 if (p2p->go_neg_peer == dev) { 921 /* 922 * If GO Negotiation is in progress, report that it has failed. 923 */ 924 p2p_go_neg_failed(p2p, -1); 925 } 926 if (p2p->invite_peer == dev) 927 p2p->invite_peer = NULL; 928 if (p2p->sd_peer == dev) 929 p2p->sd_peer = NULL; 930 if (p2p->pending_client_disc_go == dev) 931 p2p->pending_client_disc_go = NULL; 932 933 /* dev_lost() device, but only if it was previously dev_found() */ 934 if (dev->flags & P2P_DEV_REPORTED_ONCE) 935 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 936 dev->info.p2p_device_addr); 937 938 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 939 wpabuf_free(dev->info.wps_vendor_ext[i]); 940 dev->info.wps_vendor_ext[i] = NULL; 941 } 942 943 wpabuf_free(dev->info.wfd_subelems); 944 wpabuf_free(dev->info.vendor_elems); 945 wpabuf_free(dev->go_neg_conf); 946 wpabuf_free(dev->info.p2ps_instance); 947 948 os_free(dev); 949 } 950 951 952 static int p2p_get_next_prog_freq(struct p2p_data *p2p) 953 { 954 struct p2p_channels *c; 955 struct p2p_reg_class *cla; 956 size_t cl, ch; 957 int found = 0; 958 u8 reg_class; 959 u8 channel; 960 int freq; 961 962 c = &p2p->cfg->channels; 963 for (cl = 0; cl < c->reg_classes; cl++) { 964 cla = &c->reg_class[cl]; 965 if (cla->reg_class != p2p->last_prog_scan_class) 966 continue; 967 for (ch = 0; ch < cla->channels; ch++) { 968 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 969 found = 1; 970 break; 971 } 972 } 973 if (found) 974 break; 975 } 976 977 if (!found) { 978 /* Start from beginning */ 979 reg_class = c->reg_class[0].reg_class; 980 channel = c->reg_class[0].channel[0]; 981 } else { 982 /* Pick the next channel */ 983 ch++; 984 if (ch == cla->channels) { 985 cl++; 986 if (cl == c->reg_classes) 987 cl = 0; 988 ch = 0; 989 } 990 reg_class = c->reg_class[cl].reg_class; 991 channel = c->reg_class[cl].channel[ch]; 992 } 993 994 freq = p2p_channel_to_freq(reg_class, channel); 995 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz", 996 reg_class, channel, freq); 997 p2p->last_prog_scan_class = reg_class; 998 p2p->last_prog_scan_chan = channel; 999 1000 if (freq == 2412 || freq == 2437 || freq == 2462) 1001 return 0; /* No need to add social channels */ 1002 return freq; 1003 } 1004 1005 1006 static void p2p_search(struct p2p_data *p2p) 1007 { 1008 int freq = 0; 1009 enum p2p_scan_type type; 1010 u16 pw_id = DEV_PW_DEFAULT; 1011 int res; 1012 1013 if (p2p->drv_in_listen) { 1014 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing"); 1015 return; 1016 } 1017 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1018 1019 if (p2p->find_pending_full && 1020 (p2p->find_type == P2P_FIND_PROGRESSIVE || 1021 p2p->find_type == P2P_FIND_START_WITH_FULL)) { 1022 type = P2P_SCAN_FULL; 1023 p2p_dbg(p2p, "Starting search (pending full scan)"); 1024 p2p->find_pending_full = 0; 1025 } else if ((p2p->find_type == P2P_FIND_PROGRESSIVE && 1026 (freq = p2p_get_next_prog_freq(p2p)) > 0) || 1027 (p2p->find_type == P2P_FIND_START_WITH_FULL && 1028 (freq = p2p->find_specified_freq) > 0)) { 1029 type = P2P_SCAN_SOCIAL_PLUS_ONE; 1030 p2p_dbg(p2p, "Starting search (+ freq %u)", freq); 1031 } else { 1032 type = P2P_SCAN_SOCIAL; 1033 p2p_dbg(p2p, "Starting search"); 1034 } 1035 1036 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 1037 p2p->num_req_dev_types, p2p->req_dev_types, 1038 p2p->find_dev_id, pw_id, p2p->include_6ghz); 1039 if (res < 0) { 1040 p2p_dbg(p2p, "Scan request schedule failed"); 1041 p2p_continue_find(p2p); 1042 } 1043 } 1044 1045 1046 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 1047 { 1048 struct p2p_data *p2p = eloop_ctx; 1049 p2p_dbg(p2p, "Find timeout -> stop"); 1050 p2p_stop_find(p2p); 1051 } 1052 1053 1054 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status) 1055 { 1056 if (status != 0) { 1057 p2p_dbg(p2p, "Scan request failed"); 1058 /* Do continue find even for the first p2p_find_scan */ 1059 p2p_continue_find(p2p); 1060 } else { 1061 p2p_dbg(p2p, "Running p2p_scan"); 1062 p2p->p2p_scan_running = 1; 1063 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1064 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1065 p2p, NULL); 1066 } 1067 } 1068 1069 1070 static int p2p_run_after_scan(struct p2p_data *p2p) 1071 { 1072 struct p2p_device *dev; 1073 enum p2p_after_scan op; 1074 1075 op = p2p->start_after_scan; 1076 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1077 switch (op) { 1078 case P2P_AFTER_SCAN_NOTHING: 1079 break; 1080 case P2P_AFTER_SCAN_LISTEN: 1081 p2p_dbg(p2p, "Start previously requested Listen state"); 1082 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 1083 p2p->pending_listen_usec / 1000); 1084 return 1; 1085 case P2P_AFTER_SCAN_CONNECT: 1086 p2p_dbg(p2p, "Start previously requested connect with " MACSTR, 1087 MAC2STR(p2p->after_scan_peer)); 1088 dev = p2p_get_device(p2p, p2p->after_scan_peer); 1089 if (dev == NULL) { 1090 p2p_dbg(p2p, "Peer not known anymore"); 1091 break; 1092 } 1093 p2p_connect_send(p2p, dev); 1094 return 1; 1095 } 1096 1097 return 0; 1098 } 1099 1100 1101 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1102 { 1103 struct p2p_data *p2p = eloop_ctx; 1104 int running; 1105 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running); 1106 running = p2p->p2p_scan_running; 1107 /* Make sure we recover from missed scan results callback */ 1108 p2p->p2p_scan_running = 0; 1109 1110 if (running) 1111 p2p_run_after_scan(p2p); 1112 } 1113 1114 1115 static void p2p_free_req_dev_types(struct p2p_data *p2p) 1116 { 1117 p2p->num_req_dev_types = 0; 1118 os_free(p2p->req_dev_types); 1119 p2p->req_dev_types = NULL; 1120 } 1121 1122 1123 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash) 1124 { 1125 u8 buf[SHA256_MAC_LEN]; 1126 char str_buf[256]; 1127 const u8 *adv_array; 1128 size_t i, adv_len; 1129 1130 if (!str || !hash) 1131 return 0; 1132 1133 if (!str[0]) { 1134 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN); 1135 return 1; 1136 } 1137 1138 adv_array = (u8 *) str_buf; 1139 adv_len = os_strlen(str); 1140 if (adv_len >= sizeof(str_buf)) 1141 return 0; 1142 1143 for (i = 0; i < adv_len; i++) { 1144 if (str[i] >= 'A' && str[i] <= 'Z') 1145 str_buf[i] = str[i] - 'A' + 'a'; 1146 else 1147 str_buf[i] = str[i]; 1148 } 1149 1150 if (sha256_vector(1, &adv_array, &adv_len, buf)) 1151 return 0; 1152 1153 os_memcpy(hash, buf, P2PS_HASH_LEN); 1154 return 1; 1155 } 1156 1157 1158 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1159 enum p2p_discovery_type type, 1160 unsigned int num_req_dev_types, const u8 *req_dev_types, 1161 const u8 *dev_id, unsigned int search_delay, 1162 u8 seek_count, const char **seek, int freq, bool include_6ghz) 1163 { 1164 int res; 1165 struct os_reltime start; 1166 1167 p2p_dbg(p2p, "Starting find (type=%d)", type); 1168 if (p2p->p2p_scan_running) { 1169 p2p_dbg(p2p, "p2p_scan is already running"); 1170 } 1171 1172 p2p_free_req_dev_types(p2p); 1173 if (req_dev_types && num_req_dev_types) { 1174 p2p->req_dev_types = os_memdup(req_dev_types, 1175 num_req_dev_types * 1176 WPS_DEV_TYPE_LEN); 1177 if (p2p->req_dev_types == NULL) 1178 return -1; 1179 p2p->num_req_dev_types = num_req_dev_types; 1180 } 1181 1182 if (dev_id) { 1183 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1184 p2p->find_dev_id = p2p->find_dev_id_buf; 1185 } else 1186 p2p->find_dev_id = NULL; 1187 p2p->include_6ghz = p2p_wfd_enabled(p2p) && include_6ghz; 1188 if (seek_count == 0 || !seek) { 1189 /* Not an ASP search */ 1190 p2p->p2ps_seek = 0; 1191 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) { 1192 /* 1193 * An empty seek string means no hash values, but still an ASP 1194 * search. 1195 */ 1196 p2p_dbg(p2p, "ASP search"); 1197 p2p->p2ps_seek_count = 0; 1198 p2p->p2ps_seek = 1; 1199 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) { 1200 u8 buf[P2PS_HASH_LEN]; 1201 int i, count = 0; 1202 1203 for (i = 0; i < seek_count; i++) { 1204 if (!p2ps_gen_hash(p2p, seek[i], buf)) 1205 continue; 1206 1207 p2p_dbg(p2p, "Seek service %s hash " MACSTR, 1208 seek[i], MAC2STR(buf)); 1209 os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN], 1210 buf, P2PS_HASH_LEN); 1211 count++; 1212 } 1213 1214 p2p->p2ps_seek_count = count; 1215 p2p->p2ps_seek = 1; 1216 } else { 1217 p2p->p2ps_seek_count = 0; 1218 p2p->p2ps_seek = 1; 1219 } 1220 1221 /* Special case to perform wildcard search */ 1222 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) { 1223 p2p->p2ps_seek_count = 1; 1224 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash, 1225 P2PS_HASH_LEN); 1226 } 1227 1228 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1229 p2p_clear_timeout(p2p); 1230 if (p2p->pending_listen_freq) { 1231 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find"); 1232 p2p->pending_listen_freq = 0; 1233 } 1234 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1235 p2p->find_pending_full = 0; 1236 p2p->find_type = type; 1237 if (freq != 2412 && freq != 2437 && freq != 2462 && freq != 60480) 1238 p2p->find_specified_freq = freq; 1239 else 1240 p2p->find_specified_freq = 0; 1241 p2p_device_clear_reported(p2p); 1242 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN); 1243 p2p_set_state(p2p, P2P_SEARCH); 1244 p2p->search_delay = search_delay; 1245 p2p->in_search_delay = 0; 1246 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1247 p2p->last_p2p_find_timeout = timeout; 1248 if (timeout) 1249 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1250 p2p, NULL); 1251 os_get_reltime(&start); 1252 switch (type) { 1253 case P2P_FIND_START_WITH_FULL: 1254 if (freq > 0) { 1255 /* 1256 * Start with the specified channel and then move to 1257 * scans for social channels and this specific channel. 1258 */ 1259 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, 1260 P2P_SCAN_SPECIFIC, freq, 1261 p2p->num_req_dev_types, 1262 p2p->req_dev_types, dev_id, 1263 DEV_PW_DEFAULT, 1264 p2p->include_6ghz); 1265 break; 1266 } 1267 /* fall through */ 1268 case P2P_FIND_PROGRESSIVE: 1269 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1270 p2p->num_req_dev_types, 1271 p2p->req_dev_types, dev_id, 1272 DEV_PW_DEFAULT, p2p->include_6ghz); 1273 break; 1274 case P2P_FIND_ONLY_SOCIAL: 1275 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1276 p2p->num_req_dev_types, 1277 p2p->req_dev_types, dev_id, 1278 DEV_PW_DEFAULT, p2p->include_6ghz); 1279 break; 1280 default: 1281 return -1; 1282 } 1283 1284 if (!res) 1285 p2p->find_start = start; 1286 1287 if (res != 0 && p2p->p2p_scan_running) { 1288 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running"); 1289 /* wait for the previous p2p_scan to complete */ 1290 if (type == P2P_FIND_PROGRESSIVE || 1291 (type == P2P_FIND_START_WITH_FULL && freq == 0)) 1292 p2p->find_pending_full = 1; 1293 res = 0; /* do not report failure */ 1294 } else if (res != 0) { 1295 p2p_dbg(p2p, "Failed to start p2p_scan"); 1296 p2p_set_state(p2p, P2P_IDLE); 1297 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1298 } 1299 1300 return res; 1301 } 1302 1303 1304 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1305 { 1306 p2p_dbg(p2p, "Stopping find"); 1307 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1308 p2p_clear_timeout(p2p); 1309 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND) 1310 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1311 1312 p2p->p2ps_seek_count = 0; 1313 1314 p2p_set_state(p2p, P2P_IDLE); 1315 p2p_free_req_dev_types(p2p); 1316 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1317 if (p2p->go_neg_peer) 1318 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1319 p2p->go_neg_peer = NULL; 1320 p2p->sd_peer = NULL; 1321 p2p->invite_peer = NULL; 1322 p2p_stop_listen_for_freq(p2p, freq); 1323 p2p->send_action_in_progress = 0; 1324 } 1325 1326 1327 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1328 { 1329 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1330 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1331 return; 1332 } 1333 if (p2p->in_listen) { 1334 p2p->in_listen = 0; 1335 p2p_clear_timeout(p2p); 1336 } 1337 if (p2p->drv_in_listen) { 1338 /* 1339 * The driver may not deliver callback to p2p_listen_end() 1340 * when the operation gets canceled, so clear the internal 1341 * variable that is tracking driver state. 1342 */ 1343 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1344 p2p->drv_in_listen = 0; 1345 } 1346 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1347 } 1348 1349 1350 void p2p_stop_listen(struct p2p_data *p2p) 1351 { 1352 if (p2p->state != P2P_LISTEN_ONLY) { 1353 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1354 return; 1355 } 1356 1357 p2p_stop_listen_for_freq(p2p, 0); 1358 p2p_set_state(p2p, P2P_IDLE); 1359 } 1360 1361 1362 void p2p_stop_find(struct p2p_data *p2p) 1363 { 1364 p2p->pending_listen_freq = 0; 1365 p2p_stop_find_for_freq(p2p, 0); 1366 } 1367 1368 1369 static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1370 unsigned int force_freq, 1371 unsigned int pref_freq, int go) 1372 { 1373 u8 op_class, op_channel; 1374 unsigned int freq = force_freq ? force_freq : pref_freq; 1375 1376 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d", 1377 force_freq, pref_freq, go); 1378 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1379 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1380 return -1; 1381 } 1382 1383 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) && 1384 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class, 1385 op_channel))) { 1386 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1387 freq, op_class, op_channel); 1388 return -1; 1389 } 1390 1391 p2p->op_reg_class = op_class; 1392 p2p->op_channel = op_channel; 1393 1394 if (force_freq) { 1395 p2p->channels.reg_classes = 1; 1396 p2p->channels.reg_class[0].channels = 1; 1397 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1398 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1399 } else { 1400 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels, 1401 p2p->allow_6ghz); 1402 } 1403 1404 return 0; 1405 } 1406 1407 1408 static void p2p_prepare_channel_best(struct p2p_data *p2p) 1409 { 1410 u8 op_class, op_channel; 1411 const int op_classes_5ghz[] = { 124, 125, 115, 0 }; 1412 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 1413 const int op_classes_vht[] = { 128, 0 }; 1414 const int op_classes_edmg[] = { 181, 182, 183, 0 }; 1415 const int op_classes_6ghz[] = { 131, 0 }; 1416 1417 p2p_dbg(p2p, "Prepare channel best"); 1418 1419 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1420 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1421 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1422 == 0) { 1423 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1424 p2p->op_reg_class = op_class; 1425 p2p->op_channel = op_channel; 1426 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1427 p2p_supported_freq(p2p, p2p->best_freq_5) && 1428 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1429 == 0) { 1430 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1431 p2p->op_reg_class = op_class; 1432 p2p->op_channel = op_channel; 1433 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1434 p2p_supported_freq(p2p, p2p->best_freq_24) && 1435 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1436 &op_channel) == 0) { 1437 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1438 p2p->op_reg_class = op_class; 1439 p2p->op_channel = op_channel; 1440 } else if (p2p->cfg->num_pref_chan > 0 && 1441 p2p_channels_includes(&p2p->cfg->channels, 1442 p2p->cfg->pref_chan[0].op_class, 1443 p2p->cfg->pref_chan[0].chan)) { 1444 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1445 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1446 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1447 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_edmg, 1448 &p2p->op_reg_class, &p2p->op_channel) == 1449 0) { 1450 p2p_dbg(p2p, "Select possible EDMG channel (op_class %u channel %u) as operating channel preference", 1451 p2p->op_reg_class, p2p->op_channel); 1452 } else if (p2p->allow_6ghz && 1453 (p2p_channel_select(&p2p->cfg->channels, op_classes_6ghz, 1454 &p2p->op_reg_class, &p2p->op_channel) == 1455 0)) { 1456 p2p_dbg(p2p, "Select possible 6 GHz channel (op_class %u channel %u) as operating channel preference", 1457 p2p->op_reg_class, p2p->op_channel); 1458 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht, 1459 &p2p->op_reg_class, &p2p->op_channel) == 1460 0) { 1461 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference", 1462 p2p->op_reg_class, p2p->op_channel); 1463 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40, 1464 &p2p->op_reg_class, &p2p->op_channel) == 1465 0) { 1466 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference", 1467 p2p->op_reg_class, p2p->op_channel); 1468 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz, 1469 &p2p->op_reg_class, &p2p->op_channel) == 1470 0) { 1471 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference", 1472 p2p->op_reg_class, p2p->op_channel); 1473 } else if (p2p_channels_includes(&p2p->cfg->channels, 1474 p2p->cfg->op_reg_class, 1475 p2p->cfg->op_channel)) { 1476 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1477 p2p->op_reg_class = p2p->cfg->op_reg_class; 1478 p2p->op_channel = p2p->cfg->op_channel; 1479 } else if (p2p_channel_random_social(&p2p->cfg->channels, 1480 &p2p->op_reg_class, 1481 &p2p->op_channel, 1482 NULL, NULL) == 0) { 1483 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference", 1484 p2p->op_reg_class, p2p->op_channel); 1485 } else { 1486 /* Select any random available channel from the first available 1487 * operating class */ 1488 p2p_channel_select(&p2p->cfg->channels, NULL, 1489 &p2p->op_reg_class, 1490 &p2p->op_channel); 1491 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference", 1492 p2p->op_channel, p2p->op_reg_class); 1493 } 1494 1495 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels, p2p->allow_6ghz); 1496 } 1497 1498 1499 /** 1500 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD 1501 * @p2p: P2P module context from p2p_init() 1502 * @dev: Selected peer device 1503 * @force_freq: Forced frequency in MHz or 0 if not forced 1504 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1505 * @go: Whether the local end will be forced to be GO 1506 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1507 * 1508 * This function is used to do initial operating channel selection for GO 1509 * Negotiation prior to having received peer information or for P2PS PD 1510 * signalling. The selected channel may be further optimized in 1511 * p2p_reselect_channel() once the peer information is available. 1512 */ 1513 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1514 unsigned int force_freq, unsigned int pref_freq, int go) 1515 { 1516 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d", 1517 force_freq, pref_freq, go); 1518 if (force_freq || pref_freq) { 1519 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) < 1520 0) 1521 return -1; 1522 } else { 1523 p2p_prepare_channel_best(p2p); 1524 } 1525 p2p_channels_dump(p2p, "prepared channels", &p2p->channels); 1526 if (go) 1527 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq); 1528 else if (!force_freq) 1529 p2p_channels_union_inplace(&p2p->channels, 1530 &p2p->cfg->cli_channels); 1531 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels); 1532 1533 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1534 p2p->op_reg_class, p2p->op_channel, 1535 force_freq ? " (forced)" : ""); 1536 1537 if (force_freq) 1538 dev->flags |= P2P_DEV_FORCE_FREQ; 1539 else 1540 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1541 1542 return 0; 1543 } 1544 1545 1546 static void p2p_set_dev_persistent(struct p2p_device *dev, 1547 int persistent_group) 1548 { 1549 switch (persistent_group) { 1550 case 0: 1551 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1552 P2P_DEV_PREFER_PERSISTENT_RECONN); 1553 break; 1554 case 1: 1555 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1556 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1557 break; 1558 case 2: 1559 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1560 P2P_DEV_PREFER_PERSISTENT_RECONN; 1561 break; 1562 } 1563 } 1564 1565 1566 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1567 enum p2p_wps_method wps_method, 1568 int go_intent, const u8 *own_interface_addr, 1569 unsigned int force_freq, int persistent_group, 1570 const u8 *force_ssid, size_t force_ssid_len, 1571 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id) 1572 { 1573 struct p2p_device *dev; 1574 1575 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1576 " GO Intent=%d Intended Interface Address=" MACSTR 1577 " wps_method=%d persistent_group=%d pd_before_go_neg=%d " 1578 "oob_pw_id=%u allow_6ghz=%d", 1579 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1580 wps_method, persistent_group, pd_before_go_neg, oob_pw_id, 1581 p2p->allow_6ghz); 1582 1583 dev = p2p_get_device(p2p, peer_addr); 1584 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1585 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1586 MAC2STR(peer_addr)); 1587 return -1; 1588 } 1589 1590 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 1591 go_intent == 15) < 0) 1592 return -1; 1593 1594 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1595 if (!(dev->info.dev_capab & 1596 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1597 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1598 " that is in a group and is not discoverable", 1599 MAC2STR(peer_addr)); 1600 return -1; 1601 } 1602 if (dev->oper_freq <= 0) { 1603 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1604 " with incomplete information", 1605 MAC2STR(peer_addr)); 1606 return -1; 1607 } 1608 1609 /* 1610 * First, try to connect directly. If the peer does not 1611 * acknowledge frames, assume it is sleeping and use device 1612 * discoverability via the GO at that point. 1613 */ 1614 } 1615 1616 p2p->ssid_set = 0; 1617 if (force_ssid) { 1618 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1619 force_ssid, force_ssid_len); 1620 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1621 p2p->ssid_len = force_ssid_len; 1622 p2p->ssid_set = 1; 1623 } 1624 1625 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1626 dev->flags &= ~P2P_DEV_USER_REJECTED; 1627 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1628 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1629 if (pd_before_go_neg) 1630 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1631 else { 1632 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1633 /* 1634 * Assign dialog token and tie breaker here to use the same 1635 * values in each retry within the same GO Negotiation exchange. 1636 */ 1637 dev->dialog_token++; 1638 if (dev->dialog_token == 0) 1639 dev->dialog_token = 1; 1640 dev->tie_breaker = p2p->next_tie_breaker; 1641 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1642 } 1643 dev->connect_reqs = 0; 1644 dev->go_neg_req_sent = 0; 1645 dev->go_state = UNKNOWN_GO; 1646 p2p_set_dev_persistent(dev, persistent_group); 1647 p2p->go_intent = go_intent; 1648 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1649 1650 if (p2p->state != P2P_IDLE) 1651 p2p_stop_find(p2p); 1652 1653 dev->wps_method = wps_method; 1654 dev->oob_pw_id = oob_pw_id; 1655 dev->status = P2P_SC_SUCCESS; 1656 1657 if (p2p->p2p_scan_running) { 1658 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1659 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1660 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1661 return 0; 1662 } 1663 1664 return p2p_connect_send(p2p, dev); 1665 } 1666 1667 1668 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1669 enum p2p_wps_method wps_method, 1670 int go_intent, const u8 *own_interface_addr, 1671 unsigned int force_freq, int persistent_group, 1672 const u8 *force_ssid, size_t force_ssid_len, 1673 unsigned int pref_freq, u16 oob_pw_id) 1674 { 1675 struct p2p_device *dev; 1676 1677 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1678 " GO Intent=%d Intended Interface Address=" MACSTR 1679 " wps_method=%d persistent_group=%d oob_pw_id=%u allow_6ghz=%d", 1680 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1681 wps_method, persistent_group, oob_pw_id, p2p->allow_6ghz); 1682 1683 dev = p2p_get_device(p2p, peer_addr); 1684 if (dev == NULL) { 1685 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1686 MAC2STR(peer_addr)); 1687 return -1; 1688 } 1689 1690 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent == 1691 15) < 0) 1692 return -1; 1693 1694 p2p->ssid_set = 0; 1695 if (force_ssid) { 1696 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1697 force_ssid, force_ssid_len); 1698 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1699 p2p->ssid_len = force_ssid_len; 1700 p2p->ssid_set = 1; 1701 } 1702 1703 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1704 dev->flags &= ~P2P_DEV_USER_REJECTED; 1705 dev->go_neg_req_sent = 0; 1706 dev->go_state = UNKNOWN_GO; 1707 p2p_set_dev_persistent(dev, persistent_group); 1708 p2p->go_intent = go_intent; 1709 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1710 1711 dev->wps_method = wps_method; 1712 dev->oob_pw_id = oob_pw_id; 1713 dev->status = P2P_SC_SUCCESS; 1714 1715 return 0; 1716 } 1717 1718 1719 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1720 struct p2p_device *dev, struct p2p_message *msg) 1721 { 1722 os_get_reltime(&dev->last_seen); 1723 1724 p2p_copy_wps_info(p2p, dev, 0, msg); 1725 1726 if (msg->listen_channel) { 1727 int freq; 1728 freq = p2p_channel_to_freq(msg->listen_channel[3], 1729 msg->listen_channel[4]); 1730 if (freq < 0) { 1731 p2p_dbg(p2p, "Unknown peer Listen channel: " 1732 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1733 msg->listen_channel[0], 1734 msg->listen_channel[1], 1735 msg->listen_channel[2], 1736 msg->listen_channel[3], 1737 msg->listen_channel[4]); 1738 } else { 1739 p2p_dbg(p2p, "Update peer " MACSTR 1740 " Listen channel: %u -> %u MHz", 1741 MAC2STR(dev->info.p2p_device_addr), 1742 dev->listen_freq, freq); 1743 dev->listen_freq = freq; 1744 } 1745 } 1746 1747 if (msg->wfd_subelems) { 1748 wpabuf_free(dev->info.wfd_subelems); 1749 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1750 } 1751 1752 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1753 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1754 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1755 } else { 1756 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1757 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1758 "listen_freq=%d", 1759 MAC2STR(dev->info.p2p_device_addr), 1760 dev->info.dev_capab, dev->info.group_capab, 1761 dev->info.device_name, dev->listen_freq); 1762 } 1763 1764 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1765 1766 if (dev->flags & P2P_DEV_USER_REJECTED) { 1767 p2p_dbg(p2p, "Do not report rejected device"); 1768 return; 1769 } 1770 1771 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1772 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1773 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1774 } 1775 1776 1777 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1778 { 1779 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1780 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1781 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1782 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1783 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1784 } 1785 1786 1787 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1788 { 1789 if (p2p->ssid_set) { 1790 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len); 1791 params->ssid_len = p2p->ssid_len; 1792 } else { 1793 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1794 } 1795 p2p->ssid_set = 0; 1796 1797 p2p_random(params->passphrase, p2p->cfg->passphrase_len); 1798 return 0; 1799 } 1800 1801 1802 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1803 { 1804 struct p2p_go_neg_results res; 1805 int go = peer->go_state == LOCAL_GO; 1806 struct p2p_channels intersection; 1807 1808 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1809 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1810 1811 os_memset(&res, 0, sizeof(res)); 1812 res.role_go = go; 1813 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1814 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1815 res.wps_method = peer->wps_method; 1816 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1817 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1818 res.persistent_group = 2; 1819 else 1820 res.persistent_group = 1; 1821 } 1822 1823 if (go) { 1824 /* Setup AP mode for WPS provisioning */ 1825 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1826 p2p->op_channel); 1827 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1828 res.ssid_len = p2p->ssid_len; 1829 p2p_random(res.passphrase, p2p->cfg->passphrase_len); 1830 } else { 1831 res.freq = peer->oper_freq; 1832 if (p2p->ssid_len) { 1833 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1834 res.ssid_len = p2p->ssid_len; 1835 } 1836 } 1837 1838 p2p_channels_dump(p2p, "own channels", &p2p->channels); 1839 p2p_channels_dump(p2p, "peer channels", &peer->channels); 1840 p2p_channels_intersect(&p2p->channels, &peer->channels, 1841 &intersection); 1842 if (go) { 1843 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq); 1844 p2p_channels_dump(p2p, "intersection after no-GO removal", 1845 &intersection); 1846 } 1847 1848 p2p_channels_to_freqs(&intersection, res.freq_list, 1849 P2P_MAX_CHANNELS); 1850 1851 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1852 1853 p2p_clear_timeout(p2p); 1854 p2p->ssid_set = 0; 1855 peer->go_neg_req_sent = 0; 1856 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1857 peer->wps_method = WPS_NOT_READY; 1858 peer->oob_pw_id = 0; 1859 wpabuf_free(peer->go_neg_conf); 1860 peer->go_neg_conf = NULL; 1861 1862 p2p_set_state(p2p, P2P_PROVISIONING); 1863 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1864 } 1865 1866 1867 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1868 const u8 *data, size_t len, int rx_freq) 1869 { 1870 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1871 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1872 1873 if (len < 1) 1874 return; 1875 1876 switch (data[0]) { 1877 case P2P_GO_NEG_REQ: 1878 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1879 break; 1880 case P2P_GO_NEG_RESP: 1881 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1882 break; 1883 case P2P_GO_NEG_CONF: 1884 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1885 break; 1886 case P2P_INVITATION_REQ: 1887 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1888 rx_freq); 1889 break; 1890 case P2P_INVITATION_RESP: 1891 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1892 break; 1893 case P2P_PROV_DISC_REQ: 1894 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1895 break; 1896 case P2P_PROV_DISC_RESP: 1897 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1898 break; 1899 case P2P_DEV_DISC_REQ: 1900 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1901 break; 1902 case P2P_DEV_DISC_RESP: 1903 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1904 break; 1905 default: 1906 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1907 data[0]); 1908 break; 1909 } 1910 } 1911 1912 1913 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1914 const u8 *sa, const u8 *bssid, const u8 *data, 1915 size_t len, int freq) 1916 { 1917 if (len < 1) 1918 return; 1919 1920 switch (data[0]) { 1921 case WLAN_PA_VENDOR_SPECIFIC: 1922 data++; 1923 len--; 1924 if (len < 4) 1925 return; 1926 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1927 return; 1928 1929 data += 4; 1930 len -= 4; 1931 1932 p2p_rx_p2p_action(p2p, sa, data, len, freq); 1933 break; 1934 case WLAN_PA_GAS_INITIAL_REQ: 1935 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1936 break; 1937 case WLAN_PA_GAS_INITIAL_RESP: 1938 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1939 break; 1940 case WLAN_PA_GAS_COMEBACK_REQ: 1941 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1942 break; 1943 case WLAN_PA_GAS_COMEBACK_RESP: 1944 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1945 break; 1946 } 1947 } 1948 1949 1950 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1951 const u8 *bssid, u8 category, 1952 const u8 *data, size_t len, int freq) 1953 { 1954 if (category == WLAN_ACTION_PUBLIC) { 1955 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1956 return; 1957 } 1958 1959 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1960 return; 1961 1962 if (len < 4) 1963 return; 1964 1965 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1966 return; 1967 data += 4; 1968 len -= 4; 1969 1970 /* P2P action frame */ 1971 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1972 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1973 1974 if (len < 1) 1975 return; 1976 switch (data[0]) { 1977 case P2P_NOA: 1978 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1979 /* TODO */ 1980 break; 1981 case P2P_PRESENCE_REQ: 1982 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1983 break; 1984 case P2P_PRESENCE_RESP: 1985 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1986 break; 1987 case P2P_GO_DISC_REQ: 1988 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1989 break; 1990 default: 1991 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 1992 break; 1993 } 1994 } 1995 1996 1997 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1998 { 1999 struct p2p_data *p2p = eloop_ctx; 2000 if (p2p->go_neg_peer == NULL) 2001 return; 2002 if (p2p->pending_listen_freq) { 2003 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start"); 2004 p2p->pending_listen_freq = 0; 2005 } 2006 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2007 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 2008 /* 2009 * Set new timeout to make sure a previously set one does not expire 2010 * too quickly while waiting for the GO Negotiation to complete. 2011 */ 2012 p2p_set_timeout(p2p, 0, 500000); 2013 p2p_connect_send(p2p, p2p->go_neg_peer); 2014 } 2015 2016 2017 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 2018 { 2019 struct p2p_data *p2p = eloop_ctx; 2020 if (p2p->invite_peer == NULL) 2021 return; 2022 if (p2p->pending_listen_freq) { 2023 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start"); 2024 p2p->pending_listen_freq = 0; 2025 } 2026 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2027 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr, 2028 p2p->invite_dev_pw_id); 2029 } 2030 2031 2032 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 2033 const u8 *ie, size_t ie_len) 2034 { 2035 struct p2p_message msg; 2036 struct p2p_device *dev; 2037 2038 os_memset(&msg, 0, sizeof(msg)); 2039 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 2040 { 2041 p2p_parse_free(&msg); 2042 return; /* not a P2P probe */ 2043 } 2044 2045 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 2046 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 2047 != 0) { 2048 /* The Probe Request is not part of P2P Device Discovery. It is 2049 * not known whether the source address of the frame is the P2P 2050 * Device Address or P2P Interface Address. Do not add a new 2051 * peer entry based on this frames. 2052 */ 2053 p2p_parse_free(&msg); 2054 return; 2055 } 2056 2057 dev = p2p_get_device(p2p, addr); 2058 if (dev) { 2059 if (msg.listen_channel) { 2060 int freq; 2061 2062 if (dev->country[0] == 0) 2063 os_memcpy(dev->country, msg.listen_channel, 3); 2064 2065 freq = p2p_channel_to_freq(msg.listen_channel[3], 2066 msg.listen_channel[4]); 2067 2068 if (freq > 0 && dev->listen_freq != freq) { 2069 p2p_dbg(p2p, 2070 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz", 2071 MAC2STR(addr), dev->listen_freq, freq); 2072 dev->listen_freq = freq; 2073 } 2074 } 2075 2076 os_get_reltime(&dev->last_seen); 2077 p2p_parse_free(&msg); 2078 return; /* already known */ 2079 } 2080 2081 dev = p2p_create_device(p2p, addr); 2082 if (dev == NULL) { 2083 p2p_parse_free(&msg); 2084 return; 2085 } 2086 2087 os_get_reltime(&dev->last_seen); 2088 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 2089 2090 if (msg.listen_channel) { 2091 os_memcpy(dev->country, msg.listen_channel, 3); 2092 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 2093 msg.listen_channel[4]); 2094 } 2095 2096 p2p_copy_wps_info(p2p, dev, 1, &msg); 2097 2098 if (msg.wfd_subelems) { 2099 wpabuf_free(dev->info.wfd_subelems); 2100 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 2101 } 2102 2103 p2p_parse_free(&msg); 2104 2105 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 2106 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 2107 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 2108 dev->info.group_capab, dev->info.device_name, 2109 dev->listen_freq); 2110 } 2111 2112 2113 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 2114 const u8 *addr, 2115 struct p2p_message *msg) 2116 { 2117 struct p2p_device *dev; 2118 2119 dev = p2p_get_device(p2p, addr); 2120 if (dev) { 2121 os_get_reltime(&dev->last_seen); 2122 return dev; /* already known */ 2123 } 2124 2125 dev = p2p_create_device(p2p, addr); 2126 if (dev == NULL) 2127 return NULL; 2128 2129 p2p_add_dev_info(p2p, addr, dev, msg); 2130 2131 return dev; 2132 } 2133 2134 2135 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 2136 { 2137 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 2138 return 1; 2139 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 2140 WPA_GET_BE32(&req_dev_type[2]) == 0 && 2141 WPA_GET_BE16(&req_dev_type[6]) == 0) 2142 return 1; /* Category match with wildcard OUI/sub-category */ 2143 return 0; 2144 } 2145 2146 2147 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 2148 size_t num_req_dev_type) 2149 { 2150 size_t i; 2151 for (i = 0; i < num_req_dev_type; i++) { 2152 if (dev_type_match(dev_type, req_dev_type[i])) 2153 return 1; 2154 } 2155 return 0; 2156 } 2157 2158 2159 /** 2160 * p2p_match_dev_type - Match local device type with requested type 2161 * @p2p: P2P module context from p2p_init() 2162 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 2163 * Returns: 1 on match, 0 on mismatch 2164 * 2165 * This function can be used to match the Requested Device Type attribute in 2166 * WPS IE with the local device types for deciding whether to reply to a Probe 2167 * Request frame. 2168 */ 2169 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 2170 { 2171 struct wps_parse_attr attr; 2172 size_t i; 2173 2174 if (wps_parse_msg(wps, &attr)) 2175 return 1; /* assume no Requested Device Type attributes */ 2176 2177 if (attr.num_req_dev_type == 0) 2178 return 1; /* no Requested Device Type attributes -> match */ 2179 2180 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 2181 attr.num_req_dev_type)) 2182 return 1; /* Own Primary Device Type matches */ 2183 2184 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) { 2185 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 2186 attr.req_dev_type, 2187 attr.num_req_dev_type)) 2188 return 1; /* Own Secondary Device Type matches */ 2189 } 2190 2191 /* No matching device type found */ 2192 return 0; 2193 } 2194 2195 2196 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p, 2197 const u8 *query_hash, 2198 u8 query_count) 2199 { 2200 struct wpabuf *buf; 2201 u8 *len; 2202 int pw_id = -1; 2203 size_t extra = 0; 2204 2205 #ifdef CONFIG_WIFI_DISPLAY 2206 if (p2p->wfd_ie_probe_resp) 2207 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 2208 #endif /* CONFIG_WIFI_DISPLAY */ 2209 2210 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2211 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2212 2213 if (query_count) 2214 extra += MAX_SVC_ADV_IE_LEN; 2215 2216 buf = wpabuf_alloc(1000 + extra); 2217 if (buf == NULL) 2218 return NULL; 2219 2220 if (p2p->go_neg_peer) { 2221 /* Advertise immediate availability of WPS credential */ 2222 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 2223 } 2224 2225 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) { 2226 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response"); 2227 wpabuf_free(buf); 2228 return NULL; 2229 } 2230 2231 #ifdef CONFIG_WIFI_DISPLAY 2232 if (p2p->wfd_ie_probe_resp) 2233 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 2234 #endif /* CONFIG_WIFI_DISPLAY */ 2235 2236 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2237 wpabuf_put_buf(buf, 2238 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2239 2240 /* P2P IE */ 2241 len = p2p_buf_add_ie_hdr(buf); 2242 p2p_buf_add_capability(buf, p2p->dev_capab & 2243 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2244 if (p2p->ext_listen_interval) 2245 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 2246 p2p->ext_listen_interval); 2247 p2p_buf_add_device_info(buf, p2p, NULL); 2248 p2p_buf_update_ie_hdr(buf, len); 2249 2250 if (query_count) { 2251 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash, 2252 p2p->p2ps_adv_list); 2253 } 2254 2255 return buf; 2256 } 2257 2258 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf, 2259 struct wpabuf *ies, 2260 const u8 *addr, int rx_freq) 2261 { 2262 struct ieee80211_mgmt *resp; 2263 u8 channel, op_class; 2264 2265 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt, 2266 u.probe_resp.variable)); 2267 2268 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2269 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2270 os_memcpy(resp->da, addr, ETH_ALEN); 2271 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2272 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2273 resp->u.probe_resp.beacon_int = host_to_le16(100); 2274 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2275 resp->u.probe_resp.capab_info = 2276 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2277 WLAN_CAPABILITY_PRIVACY | 2278 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2279 2280 wpabuf_put_u8(buf, WLAN_EID_SSID); 2281 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2282 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2283 2284 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2285 wpabuf_put_u8(buf, 8); 2286 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2287 wpabuf_put_u8(buf, 90 / 5); 2288 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2289 wpabuf_put_u8(buf, 180 / 5); 2290 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2291 wpabuf_put_u8(buf, 360 / 5); 2292 wpabuf_put_u8(buf, 480 / 5); 2293 wpabuf_put_u8(buf, 540 / 5); 2294 2295 if (!rx_freq) { 2296 channel = p2p->cfg->channel; 2297 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) { 2298 p2p_err(p2p, "Failed to convert freq to channel"); 2299 return -1; 2300 } 2301 2302 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2303 wpabuf_put_u8(buf, 1); 2304 wpabuf_put_u8(buf, channel); 2305 2306 wpabuf_put_buf(buf, ies); 2307 2308 return 0; 2309 } 2310 2311 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash) 2312 { 2313 struct p2ps_advertisement *adv_data; 2314 int any_wfa; 2315 2316 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list); 2317 2318 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */ 2319 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0; 2320 2321 adv_data = p2p->p2ps_adv_list; 2322 while (adv_data) { 2323 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0) 2324 return 1; /* exact hash match */ 2325 if (any_wfa && 2326 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR, 2327 os_strlen(P2PS_WILD_HASH_STR)) == 0) 2328 return 1; /* WFA service match */ 2329 adv_data = adv_data->next; 2330 } 2331 2332 return 0; 2333 } 2334 2335 2336 static enum p2p_probe_req_status 2337 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2338 const u8 *bssid, const u8 *ie, size_t ie_len, 2339 unsigned int rx_freq) 2340 { 2341 struct ieee802_11_elems elems; 2342 struct wpabuf *buf; 2343 struct p2p_message msg; 2344 struct wpabuf *ies; 2345 2346 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2347 ParseFailed) { 2348 /* Ignore invalid Probe Request frames */ 2349 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it"); 2350 return P2P_PREQ_MALFORMED; 2351 } 2352 2353 if (elems.p2p == NULL) { 2354 /* not a P2P probe - ignore it */ 2355 p2p_dbg(p2p, "Not a P2P probe - ignore it"); 2356 return P2P_PREQ_NOT_P2P; 2357 } 2358 2359 if (dst && !is_broadcast_ether_addr(dst) && 2360 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2361 /* Not sent to the broadcast address or our P2P Device Address 2362 */ 2363 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it", 2364 MAC2STR(dst)); 2365 return P2P_PREQ_NOT_PROCESSED; 2366 } 2367 2368 if (bssid && !is_broadcast_ether_addr(bssid)) { 2369 /* Not sent to the Wildcard BSSID */ 2370 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it", 2371 MAC2STR(bssid)); 2372 return P2P_PREQ_NOT_PROCESSED; 2373 } 2374 2375 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2376 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2377 0) { 2378 /* not using P2P Wildcard SSID - ignore */ 2379 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it"); 2380 return P2P_PREQ_NOT_PROCESSED; 2381 } 2382 2383 if (supp_rates_11b_only(&elems)) { 2384 /* Indicates support for 11b rates only */ 2385 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it"); 2386 return P2P_PREQ_NOT_P2P; 2387 } 2388 2389 os_memset(&msg, 0, sizeof(msg)); 2390 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2391 /* Could not parse P2P attributes */ 2392 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it"); 2393 return P2P_PREQ_NOT_P2P; 2394 } 2395 2396 if (msg.service_hash && msg.service_hash_count) { 2397 const u8 *hash = msg.service_hash; 2398 u8 i; 2399 int p2ps_svc_found = 0; 2400 2401 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz", 2402 p2p->in_listen, p2p->drv_in_listen, rx_freq, 2403 p2p->cfg->channel, p2p->pending_listen_freq); 2404 2405 if (!p2p->in_listen && !p2p->drv_in_listen && 2406 p2p->pending_listen_freq && rx_freq && 2407 rx_freq != p2p->pending_listen_freq) { 2408 p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz", 2409 rx_freq, p2p->pending_listen_freq); 2410 p2p_parse_free(&msg); 2411 return P2P_PREQ_NOT_LISTEN; 2412 } 2413 2414 for (i = 0; i < msg.service_hash_count; i++) { 2415 if (p2p_service_find_asp(p2p, hash)) { 2416 p2p_dbg(p2p, "Service Hash match found: " 2417 MACSTR, MAC2STR(hash)); 2418 p2ps_svc_found = 1; 2419 break; 2420 } 2421 hash += P2PS_HASH_LEN; 2422 } 2423 2424 /* Probed hash unknown */ 2425 if (!p2ps_svc_found) { 2426 p2p_dbg(p2p, "No Service Hash match found"); 2427 p2p_parse_free(&msg); 2428 return P2P_PREQ_NOT_PROCESSED; 2429 } 2430 } else { 2431 /* This is not a P2PS Probe Request */ 2432 p2p_dbg(p2p, "No P2PS Hash in Probe Request"); 2433 2434 if (!p2p->in_listen || !p2p->drv_in_listen) { 2435 /* not in Listen state - ignore Probe Request */ 2436 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request", 2437 p2p->in_listen, p2p->drv_in_listen); 2438 p2p_parse_free(&msg); 2439 return P2P_PREQ_NOT_LISTEN; 2440 } 2441 } 2442 2443 if (msg.device_id && 2444 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2445 /* Device ID did not match */ 2446 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it", 2447 MAC2STR(msg.device_id)); 2448 p2p_parse_free(&msg); 2449 return P2P_PREQ_NOT_PROCESSED; 2450 } 2451 2452 /* Check Requested Device Type match */ 2453 if (msg.wps_attributes && 2454 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2455 /* No match with Requested Device Type */ 2456 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it"); 2457 p2p_parse_free(&msg); 2458 return P2P_PREQ_NOT_PROCESSED; 2459 } 2460 2461 if (!p2p->cfg->send_probe_resp) { 2462 /* Response generated elsewhere */ 2463 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response"); 2464 p2p_parse_free(&msg); 2465 return P2P_PREQ_NOT_PROCESSED; 2466 } 2467 2468 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2469 2470 /* 2471 * We do not really have a specific BSS that this frame is advertising, 2472 * so build a frame that has some information in valid format. This is 2473 * really only used for discovery purposes, not to learn exact BSS 2474 * parameters. 2475 */ 2476 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash, 2477 msg.service_hash_count); 2478 p2p_parse_free(&msg); 2479 if (ies == NULL) 2480 return P2P_PREQ_NOT_PROCESSED; 2481 2482 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2483 if (buf == NULL) { 2484 wpabuf_free(ies); 2485 return P2P_PREQ_NOT_PROCESSED; 2486 } 2487 2488 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) { 2489 wpabuf_free(ies); 2490 wpabuf_free(buf); 2491 return P2P_PREQ_NOT_PROCESSED; 2492 } 2493 2494 wpabuf_free(ies); 2495 2496 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq); 2497 2498 wpabuf_free(buf); 2499 2500 return P2P_PREQ_PROCESSED; 2501 } 2502 2503 2504 enum p2p_probe_req_status 2505 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2506 const u8 *bssid, const u8 *ie, size_t ie_len, 2507 unsigned int rx_freq, int p2p_lo_started) 2508 { 2509 enum p2p_probe_req_status res; 2510 2511 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2512 2513 if (p2p_lo_started) { 2514 p2p_dbg(p2p, 2515 "Probe Response is offloaded, do not reply Probe Request"); 2516 return P2P_PREQ_PROCESSED; 2517 } 2518 2519 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq); 2520 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED) 2521 return res; 2522 2523 /* 2524 * Activate a pending GO Negotiation/Invite flow if a received Probe 2525 * Request frame is from an expected peer. Some devices may share the 2526 * same address for P2P and non-P2P STA running simultaneously. The 2527 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe() 2528 * return values verified above ensure we are handling a Probe Request 2529 * frame from a P2P peer. 2530 */ 2531 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2532 p2p->go_neg_peer && 2533 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2534 == 0 && 2535 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2536 /* Received a Probe Request from GO Negotiation peer */ 2537 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2538 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2539 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2540 return res; 2541 } 2542 2543 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2544 p2p->invite_peer && 2545 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) && 2546 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2547 == 0) { 2548 /* Received a Probe Request from Invite peer */ 2549 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2550 eloop_cancel_timeout(p2p_invite_start, p2p, NULL); 2551 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2552 return res; 2553 } 2554 2555 return res; 2556 } 2557 2558 2559 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2560 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2561 { 2562 struct wpabuf *tmp; 2563 u8 *lpos; 2564 size_t tmplen; 2565 int res; 2566 u8 group_capab; 2567 struct p2p_message msg; 2568 2569 if (p2p_ie == NULL) 2570 return 0; /* WLAN AP is not a P2P manager */ 2571 2572 os_memset(&msg, 0, sizeof(msg)); 2573 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0) 2574 return 0; 2575 2576 p2p_dbg(p2p, "BSS P2P manageability %s", 2577 msg.manageability ? "enabled" : "disabled"); 2578 2579 if (!msg.manageability) 2580 return 0; 2581 2582 /* 2583 * (Re)Association Request - P2P IE 2584 * P2P Capability attribute (shall be present) 2585 * P2P Interface attribute (present if concurrent device and 2586 * P2P Management is enabled) 2587 */ 2588 tmp = wpabuf_alloc(200); 2589 if (tmp == NULL) 2590 return -1; 2591 2592 lpos = p2p_buf_add_ie_hdr(tmp); 2593 group_capab = 0; 2594 if (p2p->num_groups > 0) { 2595 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2596 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2597 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2598 p2p->cross_connect) 2599 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2600 } 2601 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2602 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2603 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2604 p2p_buf_add_p2p_interface(tmp, p2p); 2605 p2p_buf_update_ie_hdr(tmp, lpos); 2606 2607 tmplen = wpabuf_len(tmp); 2608 if (tmplen > len) 2609 res = -1; 2610 else { 2611 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2612 res = tmplen; 2613 } 2614 wpabuf_free(tmp); 2615 2616 return res; 2617 } 2618 2619 2620 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2621 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2622 { 2623 struct wpabuf *tmp; 2624 u8 *lpos; 2625 struct p2p_device *peer; 2626 size_t tmplen; 2627 int res; 2628 size_t extra = 0; 2629 2630 if (!p2p_group) 2631 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2632 2633 #ifdef CONFIG_WIFI_DISPLAY 2634 if (p2p->wfd_ie_assoc_req) 2635 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2636 #endif /* CONFIG_WIFI_DISPLAY */ 2637 2638 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2639 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2640 2641 /* 2642 * (Re)Association Request - P2P IE 2643 * P2P Capability attribute (shall be present) 2644 * Extended Listen Timing (may be present) 2645 * P2P Device Info attribute (shall be present) 2646 */ 2647 tmp = wpabuf_alloc(200 + extra); 2648 if (tmp == NULL) 2649 return -1; 2650 2651 #ifdef CONFIG_WIFI_DISPLAY 2652 if (p2p->wfd_ie_assoc_req) 2653 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2654 #endif /* CONFIG_WIFI_DISPLAY */ 2655 2656 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2657 wpabuf_put_buf(tmp, 2658 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2659 2660 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2661 2662 lpos = p2p_buf_add_ie_hdr(tmp); 2663 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2664 if (p2p->ext_listen_interval) 2665 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2666 p2p->ext_listen_interval); 2667 p2p_buf_add_device_info(tmp, p2p, peer); 2668 p2p_buf_update_ie_hdr(tmp, lpos); 2669 2670 tmplen = wpabuf_len(tmp); 2671 if (tmplen > len) 2672 res = -1; 2673 else { 2674 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2675 res = tmplen; 2676 } 2677 wpabuf_free(tmp); 2678 2679 return res; 2680 } 2681 2682 2683 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2684 { 2685 struct wpabuf *p2p_ie; 2686 int ret; 2687 2688 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2689 if (p2p_ie == NULL) 2690 return 0; 2691 2692 ret = p2p_attr_text(p2p_ie, buf, end); 2693 wpabuf_free(p2p_ie); 2694 return ret; 2695 } 2696 2697 2698 struct p2ps_advertisement * 2699 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id) 2700 { 2701 struct p2ps_advertisement *adv_data; 2702 2703 if (!p2p) 2704 return NULL; 2705 2706 adv_data = p2p->p2ps_adv_list; 2707 while (adv_data) { 2708 if (adv_data->id == adv_id) 2709 return adv_data; 2710 adv_data = adv_data->next; 2711 } 2712 2713 return NULL; 2714 } 2715 2716 2717 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id) 2718 { 2719 struct p2ps_advertisement *adv_data; 2720 struct p2ps_advertisement **prior; 2721 2722 if (!p2p) 2723 return -1; 2724 2725 adv_data = p2p->p2ps_adv_list; 2726 prior = &p2p->p2ps_adv_list; 2727 while (adv_data) { 2728 if (adv_data->id == adv_id) { 2729 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id); 2730 *prior = adv_data->next; 2731 os_free(adv_data); 2732 return 0; 2733 } 2734 prior = &adv_data->next; 2735 adv_data = adv_data->next; 2736 } 2737 2738 return -1; 2739 } 2740 2741 2742 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id, 2743 const char *adv_str, u8 svc_state, u16 config_methods, 2744 const char *svc_info, const u8 *cpt_priority) 2745 { 2746 struct p2ps_advertisement *adv_data, *tmp, **prev; 2747 u8 buf[P2PS_HASH_LEN]; 2748 size_t adv_data_len, adv_len, info_len = 0; 2749 int i; 2750 2751 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority) 2752 return -1; 2753 2754 if (!(config_methods & p2p->cfg->config_methods)) { 2755 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x", 2756 config_methods, p2p->cfg->config_methods); 2757 return -1; 2758 } 2759 2760 if (!p2ps_gen_hash(p2p, adv_str, buf)) 2761 return -1; 2762 2763 if (svc_info) 2764 info_len = os_strlen(svc_info); 2765 adv_len = os_strlen(adv_str); 2766 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 + 2767 info_len + 1; 2768 2769 adv_data = os_zalloc(adv_data_len); 2770 if (!adv_data) 2771 return -1; 2772 2773 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN); 2774 adv_data->id = adv_id; 2775 adv_data->state = svc_state; 2776 adv_data->config_methods = config_methods & p2p->cfg->config_methods; 2777 adv_data->auto_accept = (u8) auto_accept; 2778 os_memcpy(adv_data->svc_name, adv_str, adv_len); 2779 2780 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) { 2781 adv_data->cpt_priority[i] = cpt_priority[i]; 2782 adv_data->cpt_mask |= cpt_priority[i]; 2783 } 2784 2785 if (svc_info && info_len) { 2786 adv_data->svc_info = &adv_data->svc_name[adv_len + 1]; 2787 os_memcpy(adv_data->svc_info, svc_info, info_len); 2788 } 2789 2790 /* 2791 * Group Advertisements by service string. They do not need to be 2792 * sorted, but groups allow easier Probe Response instance grouping 2793 */ 2794 tmp = p2p->p2ps_adv_list; 2795 prev = &p2p->p2ps_adv_list; 2796 while (tmp) { 2797 if (tmp->id == adv_data->id) { 2798 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) { 2799 os_free(adv_data); 2800 return -1; 2801 } 2802 adv_data->next = tmp->next; 2803 *prev = adv_data; 2804 os_free(tmp); 2805 goto inserted; 2806 } else { 2807 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) { 2808 adv_data->next = tmp->next; 2809 tmp->next = adv_data; 2810 goto inserted; 2811 } 2812 } 2813 prev = &tmp->next; 2814 tmp = tmp->next; 2815 } 2816 2817 /* No svc_name match found */ 2818 adv_data->next = p2p->p2ps_adv_list; 2819 p2p->p2ps_adv_list = adv_data; 2820 2821 inserted: 2822 p2p_dbg(p2p, 2823 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x", 2824 adv_id, adv_data->config_methods, svc_state, adv_str, 2825 adv_data->cpt_mask); 2826 2827 return 0; 2828 } 2829 2830 2831 void p2p_service_flush_asp(struct p2p_data *p2p) 2832 { 2833 struct p2ps_advertisement *adv, *prev; 2834 2835 if (!p2p) 2836 return; 2837 2838 adv = p2p->p2ps_adv_list; 2839 while (adv) { 2840 prev = adv; 2841 adv = adv->next; 2842 os_free(prev); 2843 } 2844 2845 p2p->p2ps_adv_list = NULL; 2846 p2ps_prov_free(p2p); 2847 p2p_dbg(p2p, "All ASP advertisements flushed"); 2848 } 2849 2850 2851 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2852 { 2853 struct p2p_message msg; 2854 2855 os_memset(&msg, 0, sizeof(msg)); 2856 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2857 return -1; 2858 2859 if (msg.p2p_device_addr) { 2860 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2861 return 0; 2862 } else if (msg.device_id) { 2863 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2864 return 0; 2865 } 2866 return -1; 2867 } 2868 2869 2870 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2871 { 2872 struct wpabuf *p2p_ie; 2873 int ret; 2874 2875 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2876 P2P_IE_VENDOR_TYPE); 2877 if (p2p_ie == NULL) 2878 return -1; 2879 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2880 wpabuf_free(p2p_ie); 2881 return ret; 2882 } 2883 2884 2885 static void p2p_clear_go_neg(struct p2p_data *p2p) 2886 { 2887 p2p->go_neg_peer = NULL; 2888 p2p_clear_timeout(p2p); 2889 p2p_set_state(p2p, P2P_IDLE); 2890 } 2891 2892 2893 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2894 { 2895 if (p2p->go_neg_peer == NULL) { 2896 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2897 return; /* No pending Group Formation */ 2898 } 2899 2900 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2901 0) { 2902 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2903 MACSTR " (GO Negotiation peer " MACSTR ")", 2904 MAC2STR(mac_addr), 2905 MAC2STR(p2p->go_neg_peer->intended_addr)); 2906 return; /* Ignore unexpected peer address */ 2907 } 2908 2909 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2910 MAC2STR(mac_addr)); 2911 2912 p2p_clear_go_neg(p2p); 2913 } 2914 2915 2916 void p2p_group_formation_failed(struct p2p_data *p2p) 2917 { 2918 if (p2p->go_neg_peer == NULL) { 2919 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2920 return; /* No pending Group Formation */ 2921 } 2922 2923 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2924 MAC2STR(p2p->go_neg_peer->intended_addr)); 2925 2926 p2p_clear_go_neg(p2p); 2927 } 2928 2929 2930 bool is_p2p_6ghz_disabled(struct p2p_data *p2p) 2931 { 2932 if (p2p) 2933 return p2p->cfg->p2p_6ghz_disable; 2934 return false; 2935 } 2936 2937 2938 struct p2p_data * p2p_init(const struct p2p_config *cfg) 2939 { 2940 struct p2p_data *p2p; 2941 2942 if (cfg->max_peers < 1 || 2943 cfg->passphrase_len < 8 || cfg->passphrase_len > 63) 2944 return NULL; 2945 2946 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2947 if (p2p == NULL) 2948 return NULL; 2949 p2p->cfg = (struct p2p_config *) (p2p + 1); 2950 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2951 if (cfg->dev_name) 2952 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2953 if (cfg->manufacturer) 2954 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2955 if (cfg->model_name) 2956 p2p->cfg->model_name = os_strdup(cfg->model_name); 2957 if (cfg->model_number) 2958 p2p->cfg->model_number = os_strdup(cfg->model_number); 2959 if (cfg->serial_number) 2960 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2961 if (cfg->pref_chan) { 2962 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2963 sizeof(struct p2p_channel)); 2964 if (p2p->cfg->pref_chan) { 2965 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2966 cfg->num_pref_chan * 2967 sizeof(struct p2p_channel)); 2968 } else 2969 p2p->cfg->num_pref_chan = 0; 2970 } 2971 2972 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash); 2973 2974 p2p->min_disc_int = 1; 2975 p2p->max_disc_int = 3; 2976 p2p->max_disc_tu = -1; 2977 2978 if (os_get_random(&p2p->next_tie_breaker, 1) < 0) 2979 p2p->next_tie_breaker = 0; 2980 p2p->next_tie_breaker &= 0x01; 2981 if (cfg->sd_request) 2982 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2983 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2984 if (cfg->concurrent_operations) 2985 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2986 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2987 2988 dl_list_init(&p2p->devices); 2989 2990 p2p->go_timeout = 100; 2991 p2p->client_timeout = 20; 2992 p2p->num_p2p_sd_queries = 0; 2993 2994 p2p_dbg(p2p, "initialized"); 2995 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 2996 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 2997 2998 return p2p; 2999 } 3000 3001 3002 void p2p_deinit(struct p2p_data *p2p) 3003 { 3004 #ifdef CONFIG_WIFI_DISPLAY 3005 wpabuf_free(p2p->wfd_ie_beacon); 3006 wpabuf_free(p2p->wfd_ie_probe_req); 3007 wpabuf_free(p2p->wfd_ie_probe_resp); 3008 wpabuf_free(p2p->wfd_ie_assoc_req); 3009 wpabuf_free(p2p->wfd_ie_invitation); 3010 wpabuf_free(p2p->wfd_ie_prov_disc_req); 3011 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 3012 wpabuf_free(p2p->wfd_ie_go_neg); 3013 wpabuf_free(p2p->wfd_dev_info); 3014 wpabuf_free(p2p->wfd_assoc_bssid); 3015 wpabuf_free(p2p->wfd_coupled_sink_info); 3016 wpabuf_free(p2p->wfd_r2_dev_info); 3017 #endif /* CONFIG_WIFI_DISPLAY */ 3018 3019 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3020 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 3021 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3022 p2p_flush(p2p); 3023 p2p_free_req_dev_types(p2p); 3024 os_free(p2p->cfg->dev_name); 3025 os_free(p2p->cfg->manufacturer); 3026 os_free(p2p->cfg->model_name); 3027 os_free(p2p->cfg->model_number); 3028 os_free(p2p->cfg->serial_number); 3029 os_free(p2p->cfg->pref_chan); 3030 os_free(p2p->groups); 3031 p2ps_prov_free(p2p); 3032 wpabuf_free(p2p->sd_resp); 3033 p2p_remove_wps_vendor_extensions(p2p); 3034 os_free(p2p->no_go_freq.range); 3035 p2p_service_flush_asp(p2p); 3036 3037 os_free(p2p); 3038 } 3039 3040 3041 void p2p_flush(struct p2p_data *p2p) 3042 { 3043 struct p2p_device *dev, *prev; 3044 3045 p2p_ext_listen(p2p, 0, 0); 3046 p2p_stop_find(p2p); 3047 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 3048 list) { 3049 dl_list_del(&dev->list); 3050 p2p_device_free(p2p, dev); 3051 } 3052 p2p_free_sd_queries(p2p); 3053 p2p->ssid_set = 0; 3054 p2ps_prov_free(p2p); 3055 p2p_reset_pending_pd(p2p); 3056 p2p->override_pref_op_class = 0; 3057 p2p->override_pref_channel = 0; 3058 } 3059 3060 3061 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 3062 { 3063 struct p2p_device *dev; 3064 3065 dev = p2p_get_device(p2p, addr); 3066 if (dev == NULL) 3067 return -1; 3068 3069 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 3070 3071 if (p2p->go_neg_peer == dev) { 3072 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3073 p2p->go_neg_peer = NULL; 3074 } 3075 3076 dev->wps_method = WPS_NOT_READY; 3077 dev->oob_pw_id = 0; 3078 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 3079 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 3080 3081 return 0; 3082 } 3083 3084 3085 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 3086 { 3087 os_free(p2p->cfg->dev_name); 3088 if (dev_name) { 3089 p2p->cfg->dev_name = os_strdup(dev_name); 3090 if (p2p->cfg->dev_name == NULL) 3091 return -1; 3092 } else 3093 p2p->cfg->dev_name = NULL; 3094 return 0; 3095 } 3096 3097 3098 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 3099 { 3100 os_free(p2p->cfg->manufacturer); 3101 p2p->cfg->manufacturer = NULL; 3102 if (manufacturer) { 3103 p2p->cfg->manufacturer = os_strdup(manufacturer); 3104 if (p2p->cfg->manufacturer == NULL) 3105 return -1; 3106 } 3107 3108 return 0; 3109 } 3110 3111 3112 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 3113 { 3114 os_free(p2p->cfg->model_name); 3115 p2p->cfg->model_name = NULL; 3116 if (model_name) { 3117 p2p->cfg->model_name = os_strdup(model_name); 3118 if (p2p->cfg->model_name == NULL) 3119 return -1; 3120 } 3121 3122 return 0; 3123 } 3124 3125 3126 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 3127 { 3128 os_free(p2p->cfg->model_number); 3129 p2p->cfg->model_number = NULL; 3130 if (model_number) { 3131 p2p->cfg->model_number = os_strdup(model_number); 3132 if (p2p->cfg->model_number == NULL) 3133 return -1; 3134 } 3135 3136 return 0; 3137 } 3138 3139 3140 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 3141 { 3142 os_free(p2p->cfg->serial_number); 3143 p2p->cfg->serial_number = NULL; 3144 if (serial_number) { 3145 p2p->cfg->serial_number = os_strdup(serial_number); 3146 if (p2p->cfg->serial_number == NULL) 3147 return -1; 3148 } 3149 3150 return 0; 3151 } 3152 3153 3154 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 3155 { 3156 p2p->cfg->config_methods = config_methods; 3157 } 3158 3159 3160 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 3161 { 3162 os_memcpy(p2p->cfg->uuid, uuid, 16); 3163 } 3164 3165 3166 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 3167 { 3168 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 3169 return 0; 3170 } 3171 3172 3173 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 3174 size_t num_dev_types) 3175 { 3176 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 3177 num_dev_types = P2P_SEC_DEVICE_TYPES; 3178 p2p->cfg->num_sec_dev_types = num_dev_types; 3179 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 3180 return 0; 3181 } 3182 3183 3184 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 3185 { 3186 int i; 3187 3188 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3189 wpabuf_free(p2p->wps_vendor_ext[i]); 3190 p2p->wps_vendor_ext[i] = NULL; 3191 } 3192 } 3193 3194 3195 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 3196 const struct wpabuf *vendor_ext) 3197 { 3198 int i; 3199 3200 if (vendor_ext == NULL) 3201 return -1; 3202 3203 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3204 if (p2p->wps_vendor_ext[i] == NULL) 3205 break; 3206 } 3207 if (i >= P2P_MAX_WPS_VENDOR_EXT) 3208 return -1; 3209 3210 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 3211 if (p2p->wps_vendor_ext[i] == NULL) 3212 return -1; 3213 3214 return 0; 3215 } 3216 3217 3218 int p2p_set_country(struct p2p_data *p2p, const char *country) 3219 { 3220 os_memcpy(p2p->cfg->country, country, 3); 3221 return 0; 3222 } 3223 3224 3225 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev) 3226 { 3227 int res; 3228 3229 if (dev->sd_pending_bcast_queries == 0) { 3230 /* Initialize with total number of registered broadcast 3231 * SD queries. */ 3232 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries; 3233 } 3234 3235 res = p2p_start_sd(p2p, dev); 3236 if (res == -2) 3237 return -2; 3238 if (res == 0) 3239 return 1; 3240 3241 if (dev->req_config_methods && 3242 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 3243 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3244 MACSTR " (config methods 0x%x)", 3245 MAC2STR(dev->info.p2p_device_addr), 3246 dev->req_config_methods); 3247 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 3248 return 1; 3249 } 3250 3251 return 0; 3252 } 3253 3254 3255 void p2p_continue_find(struct p2p_data *p2p) 3256 { 3257 struct p2p_device *dev; 3258 int found, res; 3259 3260 p2p_set_state(p2p, P2P_SEARCH); 3261 3262 /* Continue from the device following the last iteration */ 3263 found = 0; 3264 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3265 if (dev == p2p->last_p2p_find_oper) { 3266 found = 1; 3267 continue; 3268 } 3269 if (!found) 3270 continue; 3271 res = p2p_pre_find_operation(p2p, dev); 3272 if (res > 0) { 3273 p2p->last_p2p_find_oper = dev; 3274 return; 3275 } 3276 if (res == -2) 3277 goto skip_sd; 3278 } 3279 3280 /* 3281 * Wrap around to the beginning of the list and continue until the last 3282 * iteration device. 3283 */ 3284 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3285 res = p2p_pre_find_operation(p2p, dev); 3286 if (res > 0) { 3287 p2p->last_p2p_find_oper = dev; 3288 return; 3289 } 3290 if (res == -2) 3291 goto skip_sd; 3292 if (dev == p2p->last_p2p_find_oper) 3293 break; 3294 } 3295 3296 skip_sd: 3297 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN); 3298 p2p_listen_in_find(p2p, 1); 3299 } 3300 3301 3302 static void p2p_sd_cb(struct p2p_data *p2p, int success) 3303 { 3304 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 3305 success); 3306 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3307 3308 if (!success) { 3309 if (p2p->sd_peer) { 3310 if (is_zero_ether_addr(p2p->sd_query_no_ack)) { 3311 os_memcpy(p2p->sd_query_no_ack, 3312 p2p->sd_peer->info.p2p_device_addr, 3313 ETH_ALEN); 3314 p2p_dbg(p2p, 3315 "First SD Query no-ACK in this search iteration: " 3316 MACSTR, MAC2STR(p2p->sd_query_no_ack)); 3317 } 3318 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3319 } 3320 p2p->sd_peer = NULL; 3321 if (p2p->state != P2P_IDLE) 3322 p2p_continue_find(p2p); 3323 return; 3324 } 3325 3326 if (p2p->sd_peer == NULL) { 3327 p2p_dbg(p2p, "No SD peer entry known"); 3328 if (p2p->state != P2P_IDLE) 3329 p2p_continue_find(p2p); 3330 return; 3331 } 3332 3333 if (p2p->sd_query && p2p->sd_query->for_all_peers) { 3334 /* Update the pending broadcast SD query count for this device 3335 */ 3336 p2p->sd_peer->sd_pending_bcast_queries--; 3337 3338 /* 3339 * If there are no pending broadcast queries for this device, 3340 * mark it as done (-1). 3341 */ 3342 if (p2p->sd_peer->sd_pending_bcast_queries == 0) 3343 p2p->sd_peer->sd_pending_bcast_queries = -1; 3344 } 3345 3346 /* Wait for response from the peer */ 3347 p2p_set_state(p2p, P2P_SD_DURING_FIND); 3348 p2p_set_timeout(p2p, 0, 200000); 3349 } 3350 3351 3352 /** 3353 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 3354 * @p2p: P2P module context from p2p_init() 3355 */ 3356 static void p2p_retry_pd(struct p2p_data *p2p) 3357 { 3358 struct p2p_device *dev; 3359 3360 /* 3361 * Retry the prov disc req attempt only for the peer that the user had 3362 * requested. 3363 */ 3364 3365 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3366 if (os_memcmp(p2p->pending_pd_devaddr, 3367 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3368 continue; 3369 if (!dev->req_config_methods) 3370 continue; 3371 3372 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3373 MACSTR " (config methods 0x%x)", 3374 MAC2STR(dev->info.p2p_device_addr), 3375 dev->req_config_methods); 3376 p2p_send_prov_disc_req(p2p, dev, 3377 dev->flags & P2P_DEV_PD_FOR_JOIN, 3378 p2p->pd_force_freq); 3379 return; 3380 } 3381 } 3382 3383 3384 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 3385 { 3386 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 3387 success); 3388 3389 /* 3390 * Postpone resetting the pending action state till after we actually 3391 * time out. This allows us to take some action like notifying any 3392 * interested parties about no response to the request. 3393 * 3394 * When the timer (below) goes off we check in IDLE, SEARCH, or 3395 * LISTEN_ONLY state, which are the only allowed states to issue a PD 3396 * requests in, if this was still pending and then raise notification. 3397 */ 3398 3399 if (!success) { 3400 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3401 3402 if (p2p->user_initiated_pd && 3403 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 3404 { 3405 /* Retry request from timeout to avoid busy loops */ 3406 p2p->pending_action_state = P2P_PENDING_PD; 3407 p2p_set_timeout(p2p, 0, 50000); 3408 } else if (p2p->state != P2P_IDLE) 3409 p2p_continue_find(p2p); 3410 else if (p2p->user_initiated_pd) { 3411 p2p->pending_action_state = P2P_PENDING_PD; 3412 p2p_set_timeout(p2p, 0, 300000); 3413 } 3414 return; 3415 } 3416 3417 /* 3418 * If after PD Request the peer doesn't expect to receive PD Response 3419 * the PD Request ACK indicates a completion of the current PD. This 3420 * happens only on the advertiser side sending the follow-on PD Request 3421 * with the status different than 12 (Success: accepted by user). 3422 */ 3423 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker && 3424 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) { 3425 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK"); 3426 3427 if (p2p->send_action_in_progress) { 3428 p2p->send_action_in_progress = 0; 3429 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3430 } 3431 3432 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3433 3434 if (p2p->cfg->p2ps_prov_complete) { 3435 p2p->cfg->p2ps_prov_complete( 3436 p2p->cfg->cb_ctx, 3437 p2p->p2ps_prov->status, 3438 p2p->p2ps_prov->adv_mac, 3439 p2p->p2ps_prov->adv_mac, 3440 p2p->p2ps_prov->session_mac, 3441 NULL, p2p->p2ps_prov->adv_id, 3442 p2p->p2ps_prov->session_id, 3443 0, 0, NULL, 0, 0, 0, 3444 NULL, NULL, 0, 0, NULL, 0); 3445 } 3446 3447 if (p2p->user_initiated_pd) 3448 p2p_reset_pending_pd(p2p); 3449 3450 p2ps_prov_free(p2p); 3451 return; 3452 } 3453 3454 /* 3455 * This postponing, of resetting pending_action_state, needs to be 3456 * done only for user initiated PD requests and not internal ones. 3457 */ 3458 if (p2p->user_initiated_pd) 3459 p2p->pending_action_state = P2P_PENDING_PD; 3460 else 3461 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3462 3463 /* Wait for response from the peer */ 3464 if (p2p->state == P2P_SEARCH) 3465 p2p_set_state(p2p, P2P_PD_DURING_FIND); 3466 p2p_set_timeout(p2p, 0, 200000); 3467 } 3468 3469 3470 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success) 3471 { 3472 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d", 3473 success); 3474 3475 if (p2p->send_action_in_progress) { 3476 p2p->send_action_in_progress = 0; 3477 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3478 } 3479 3480 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3481 3482 if (!success) { 3483 if (p2p->state == P2P_SEARCH) 3484 p2p_continue_find(p2p); 3485 return; 3486 } 3487 3488 if (!p2p->cfg->prov_disc_resp_cb || 3489 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1) { 3490 if (p2p->state == P2P_SEARCH) 3491 p2p_continue_find(p2p); 3492 return; 3493 } 3494 3495 p2p_dbg(p2p, 3496 "Post-Provision Discovery operations started - do not try to continue other P2P operations"); 3497 } 3498 3499 3500 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 3501 struct os_reltime *rx_time, int level, const u8 *ies, 3502 size_t ies_len) 3503 { 3504 if (os_reltime_before(rx_time, &p2p->find_start)) { 3505 /* 3506 * The driver may have cached (e.g., in cfg80211 BSS table) the 3507 * scan results for relatively long time. To avoid reporting 3508 * stale information, update P2P peers only based on results 3509 * that have based on frames received after the last p2p_find 3510 * operation was started. 3511 */ 3512 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 3513 " (rx_time=%u.%06u find_start=%u.%06u)", 3514 MAC2STR(bssid), (unsigned int) rx_time->sec, 3515 (unsigned int) rx_time->usec, 3516 (unsigned int) p2p->find_start.sec, 3517 (unsigned int) p2p->find_start.usec); 3518 return 0; 3519 } 3520 3521 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 3522 3523 return 0; 3524 } 3525 3526 3527 void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay) 3528 { 3529 if (!p2p->p2p_scan_running) { 3530 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 3531 } 3532 p2p->p2p_scan_running = 0; 3533 3534 /* Use this delay only when p2p_find doesn't set it */ 3535 if (!p2p->search_delay) 3536 p2p->search_delay = delay; 3537 3538 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3539 3540 if (p2p_run_after_scan(p2p)) 3541 return; 3542 if (p2p->state == P2P_SEARCH) 3543 p2p_continue_find(p2p); 3544 } 3545 3546 3547 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id, 3548 unsigned int bands) 3549 { 3550 u8 dev_capab; 3551 u8 *len; 3552 3553 #ifdef CONFIG_WIFI_DISPLAY 3554 if (p2p->wfd_ie_probe_req) 3555 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 3556 #endif /* CONFIG_WIFI_DISPLAY */ 3557 3558 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3559 wpabuf_put_buf(ies, 3560 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3561 3562 len = p2p_buf_add_ie_hdr(ies); 3563 3564 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3565 3566 /* P2PS requires Probe Request frames to include SD bit */ 3567 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3568 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 3569 3570 p2p_buf_add_capability(ies, dev_capab, 0); 3571 3572 if (dev_id) 3573 p2p_buf_add_device_id(ies, dev_id); 3574 if (p2p->cfg->reg_class && p2p->cfg->channel) 3575 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 3576 p2p->cfg->reg_class, 3577 p2p->cfg->channel); 3578 if (p2p->ext_listen_interval) 3579 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 3580 p2p->ext_listen_interval); 3581 3582 if (bands & BAND_60_GHZ) 3583 p2p_buf_add_device_info(ies, p2p, NULL); 3584 3585 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3586 p2p_buf_add_service_hash(ies, p2p); 3587 3588 /* TODO: p2p_buf_add_operating_channel() if GO */ 3589 p2p_buf_update_ie_hdr(ies, len); 3590 } 3591 3592 3593 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 3594 { 3595 size_t len = 100; 3596 3597 #ifdef CONFIG_WIFI_DISPLAY 3598 if (p2p && p2p->wfd_ie_probe_req) 3599 len += wpabuf_len(p2p->wfd_ie_probe_req); 3600 #endif /* CONFIG_WIFI_DISPLAY */ 3601 3602 if (p2p && p2p->vendor_elem && 3603 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3604 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3605 3606 return len; 3607 } 3608 3609 3610 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 3611 { 3612 return p2p_attr_text(p2p_ie, buf, end); 3613 } 3614 3615 3616 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 3617 { 3618 struct p2p_device *dev = p2p->go_neg_peer; 3619 int timeout; 3620 3621 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 3622 3623 if (dev == NULL) { 3624 p2p_dbg(p2p, "No pending GO Negotiation"); 3625 return; 3626 } 3627 3628 if (success) { 3629 if (dev->flags & P2P_DEV_USER_REJECTED) { 3630 p2p_set_state(p2p, P2P_IDLE); 3631 return; 3632 } 3633 } else if (dev->go_neg_req_sent) { 3634 /* Cancel the increment from p2p_connect_send() on failure */ 3635 dev->go_neg_req_sent--; 3636 } 3637 3638 if (!success && 3639 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 3640 !is_zero_ether_addr(dev->member_in_go_dev)) { 3641 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 3642 MAC2STR(dev->info.p2p_device_addr)); 3643 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3644 p2p_send_dev_disc_req(p2p, dev); 3645 return; 3646 } 3647 3648 /* 3649 * Use P2P find, if needed, to find the other device from its listen 3650 * channel. 3651 */ 3652 p2p_set_state(p2p, P2P_CONNECT); 3653 timeout = success ? 500000 : 100000; 3654 if (!success && p2p->go_neg_peer && 3655 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 3656 unsigned int r; 3657 /* 3658 * Peer is expected to wait our response and we will skip the 3659 * listen phase. Add some randomness to the wait time here to 3660 * make it less likely to hit cases where we could end up in 3661 * sync with peer not listening. 3662 */ 3663 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 3664 r = 0; 3665 timeout += r % 100000; 3666 } 3667 p2p_set_timeout(p2p, 0, timeout); 3668 } 3669 3670 3671 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 3672 { 3673 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 3674 success); 3675 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 3676 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 3677 return; 3678 } 3679 p2p_set_state(p2p, P2P_CONNECT); 3680 p2p_set_timeout(p2p, 0, 500000); 3681 } 3682 3683 3684 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 3685 const u8 *addr) 3686 { 3687 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 3688 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 3689 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status); 3690 return; 3691 } 3692 3693 if (success) { 3694 struct p2p_device *dev; 3695 dev = p2p_get_device(p2p, addr); 3696 if (dev && 3697 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 3698 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 3699 } 3700 3701 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND) 3702 p2p_continue_find(p2p); 3703 } 3704 3705 3706 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3707 enum p2p_send_action_result result) 3708 { 3709 struct p2p_device *dev; 3710 3711 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 3712 if (result == P2P_SEND_ACTION_FAILED) { 3713 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3714 p2p_go_neg_failed(p2p, -1); 3715 return; 3716 } 3717 3718 dev = p2p->go_neg_peer; 3719 3720 if (result == P2P_SEND_ACTION_NO_ACK) { 3721 /* 3722 * Retry GO Negotiation Confirmation 3723 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive 3724 * ACK for confirmation. 3725 */ 3726 if (dev && dev->go_neg_conf && 3727 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) { 3728 p2p_dbg(p2p, "GO Negotiation Confirm retry %d", 3729 dev->go_neg_conf_sent); 3730 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 3731 if (p2p_send_action(p2p, dev->go_neg_conf_freq, 3732 dev->info.p2p_device_addr, 3733 p2p->cfg->dev_addr, 3734 dev->info.p2p_device_addr, 3735 wpabuf_head(dev->go_neg_conf), 3736 wpabuf_len(dev->go_neg_conf), 0) >= 3737 0) { 3738 dev->go_neg_conf_sent++; 3739 return; 3740 } 3741 p2p_dbg(p2p, "Failed to re-send Action frame"); 3742 3743 /* 3744 * Continue with the assumption that the first attempt 3745 * went through and just the ACK frame was lost. 3746 */ 3747 } 3748 3749 /* 3750 * It looks like the TX status for GO Negotiation Confirm is 3751 * often showing failure even when the peer has actually 3752 * received the frame. Since the peer may change channels 3753 * immediately after having received the frame, we may not see 3754 * an Ack for retries, so just dropping a single frame may 3755 * trigger this. To allow the group formation to succeed if the 3756 * peer did indeed receive the frame, continue regardless of 3757 * the TX status. 3758 */ 3759 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 3760 } 3761 3762 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3763 3764 if (dev == NULL) 3765 return; 3766 3767 p2p_go_complete(p2p, dev); 3768 } 3769 3770 3771 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3772 const u8 *src, const u8 *bssid, 3773 enum p2p_send_action_result result) 3774 { 3775 enum p2p_pending_action_state state; 3776 int success; 3777 3778 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 3779 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)", 3780 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3781 MAC2STR(bssid), result, p2p_state_txt(p2p->state)); 3782 success = result == P2P_SEND_ACTION_SUCCESS; 3783 state = p2p->pending_action_state; 3784 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3785 switch (state) { 3786 case P2P_NO_PENDING_ACTION: 3787 if (p2p->send_action_in_progress) { 3788 p2p->send_action_in_progress = 0; 3789 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3790 } 3791 break; 3792 case P2P_PENDING_GO_NEG_REQUEST: 3793 p2p_go_neg_req_cb(p2p, success); 3794 break; 3795 case P2P_PENDING_GO_NEG_RESPONSE: 3796 p2p_go_neg_resp_cb(p2p, success); 3797 break; 3798 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3799 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3800 break; 3801 case P2P_PENDING_GO_NEG_CONFIRM: 3802 p2p_go_neg_conf_cb(p2p, result); 3803 break; 3804 case P2P_PENDING_SD: 3805 p2p_sd_cb(p2p, success); 3806 break; 3807 case P2P_PENDING_PD: 3808 p2p_prov_disc_cb(p2p, success); 3809 break; 3810 case P2P_PENDING_PD_RESPONSE: 3811 p2p_prov_disc_resp_cb(p2p, success); 3812 break; 3813 case P2P_PENDING_INVITATION_REQUEST: 3814 p2p_invitation_req_cb(p2p, success); 3815 break; 3816 case P2P_PENDING_INVITATION_RESPONSE: 3817 p2p_invitation_resp_cb(p2p, success); 3818 break; 3819 case P2P_PENDING_DEV_DISC_REQUEST: 3820 p2p_dev_disc_req_cb(p2p, success); 3821 break; 3822 case P2P_PENDING_DEV_DISC_RESPONSE: 3823 p2p_dev_disc_resp_cb(p2p, success); 3824 break; 3825 case P2P_PENDING_GO_DISC_REQ: 3826 p2p_go_disc_req_cb(p2p, success); 3827 break; 3828 } 3829 } 3830 3831 3832 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3833 unsigned int duration) 3834 { 3835 if (freq == p2p->pending_client_disc_freq) { 3836 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3837 p2p->pending_client_disc_freq = 0; 3838 return; 3839 } 3840 3841 if (freq != p2p->pending_listen_freq) { 3842 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3843 freq, duration, p2p->pending_listen_freq); 3844 return; 3845 } 3846 3847 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3848 p2p->pending_listen_sec, p2p->pending_listen_usec, 3849 p2p->pending_listen_freq); 3850 p2p->in_listen = 1; 3851 p2p->drv_in_listen = freq; 3852 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3853 /* 3854 * Add 20 msec extra wait to avoid race condition with driver 3855 * remain-on-channel end event, i.e., give driver more time to 3856 * complete the operation before our timeout expires. 3857 */ 3858 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3859 p2p->pending_listen_usec + 20000); 3860 } 3861 3862 p2p->pending_listen_freq = 0; 3863 } 3864 3865 3866 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3867 { 3868 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3869 p2p->drv_in_listen = 0; 3870 if (p2p->in_listen) 3871 return 0; /* Internal timeout will trigger the next step */ 3872 3873 if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer && 3874 p2p->pending_listen_freq) { 3875 /* 3876 * Better wait a bit if the driver is unable to start 3877 * offchannel operation for some reason to continue with 3878 * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions. 3879 */ 3880 p2p_dbg(p2p, 3881 "Listen operation did not seem to start - delay idle phase to avoid busy loop"); 3882 p2p_set_timeout(p2p, 0, 100000); 3883 return 1; 3884 } 3885 3886 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3887 if (p2p->go_neg_peer->connect_reqs >= 120) { 3888 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3889 p2p_go_neg_failed(p2p, -1); 3890 return 0; 3891 } 3892 3893 p2p_set_state(p2p, P2P_CONNECT); 3894 p2p_connect_send(p2p, p2p->go_neg_peer); 3895 return 1; 3896 } else if (p2p->state == P2P_SEARCH) { 3897 if (p2p->p2p_scan_running) { 3898 /* 3899 * Search is already in progress. This can happen if 3900 * an Action frame RX is reported immediately after 3901 * the end of a remain-on-channel operation and the 3902 * response frame to that is sent using an offchannel 3903 * operation while in p2p_find. Avoid an attempt to 3904 * restart a scan here. 3905 */ 3906 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3907 return 1; 3908 } 3909 if (p2p->pending_listen_freq) { 3910 /* 3911 * Better wait a bit if the driver is unable to start 3912 * offchannel operation for some reason. p2p_search() 3913 * will be started from internal timeout. 3914 */ 3915 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3916 p2p_set_timeout(p2p, 0, 100000); 3917 return 1; 3918 } 3919 if (p2p->search_delay) { 3920 p2p_dbg(p2p, "Delay search operation by %u ms", 3921 p2p->search_delay); 3922 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3923 (p2p->search_delay % 1000) * 1000); 3924 return 1; 3925 } 3926 p2p_search(p2p); 3927 return 1; 3928 } 3929 3930 return 0; 3931 } 3932 3933 3934 static void p2p_timeout_connect(struct p2p_data *p2p) 3935 { 3936 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3937 if (p2p->go_neg_peer && 3938 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3939 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3940 p2p_go_neg_failed(p2p, -1); 3941 return; 3942 } 3943 if (p2p->go_neg_peer && 3944 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3945 p2p->go_neg_peer->connect_reqs < 120) { 3946 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3947 p2p_connect_send(p2p, p2p->go_neg_peer); 3948 return; 3949 } 3950 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) { 3951 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)"); 3952 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3953 p2p_set_timeout(p2p, 0, 30000); 3954 return; 3955 } 3956 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3957 p2p_listen_in_find(p2p, 0); 3958 } 3959 3960 3961 static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3962 { 3963 if (p2p->go_neg_peer) { 3964 if (p2p->drv_in_listen) { 3965 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3966 return; 3967 } 3968 3969 if (p2p->go_neg_peer->connect_reqs >= 120) { 3970 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3971 p2p_go_neg_failed(p2p, -1); 3972 return; 3973 } 3974 3975 p2p_set_state(p2p, P2P_CONNECT); 3976 p2p_connect_send(p2p, p2p->go_neg_peer); 3977 } else 3978 p2p_set_state(p2p, P2P_IDLE); 3979 } 3980 3981 3982 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3983 { 3984 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3985 3986 if (p2p->cfg->is_concurrent_session_active && 3987 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx)) 3988 p2p_set_timeout(p2p, 0, 500000); 3989 else 3990 p2p_set_timeout(p2p, 0, 200000); 3991 } 3992 3993 3994 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3995 { 3996 struct p2p_device *dev = p2p->go_neg_peer; 3997 3998 if (dev == NULL) { 3999 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 4000 return; 4001 } 4002 4003 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 4004 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 4005 if (p2p->pending_listen_freq) { 4006 p2p_dbg(p2p, "Clear pending_listen_freq for %s", __func__); 4007 p2p->pending_listen_freq = 0; 4008 } 4009 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 4010 p2p_listen_in_find(p2p, 0); 4011 } 4012 4013 4014 static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 4015 { 4016 p2p_dbg(p2p, "Service Discovery Query timeout"); 4017 if (p2p->sd_peer) { 4018 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4019 p2p->sd_peer = NULL; 4020 } 4021 p2p_continue_find(p2p); 4022 } 4023 4024 4025 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 4026 { 4027 p2p_dbg(p2p, "Provision Discovery Request timeout"); 4028 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4029 p2p_continue_find(p2p); 4030 } 4031 4032 4033 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 4034 { 4035 u32 adv_id = 0; 4036 u8 *adv_mac = NULL; 4037 4038 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4039 4040 /* 4041 * For user initiated PD requests that we have not gotten any responses 4042 * for while in IDLE state, we retry them a couple of times before 4043 * giving up. 4044 */ 4045 if (!p2p->user_initiated_pd) 4046 return; 4047 4048 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 4049 4050 if (p2p->pd_retries) { 4051 p2p->pd_retries--; 4052 p2p_retry_pd(p2p); 4053 } else { 4054 struct p2p_device *dev; 4055 int for_join = 0; 4056 4057 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 4058 if (os_memcmp(p2p->pending_pd_devaddr, 4059 dev->info.p2p_device_addr, ETH_ALEN) != 0) 4060 continue; 4061 if (dev->req_config_methods && 4062 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 4063 for_join = 1; 4064 } 4065 4066 if (p2p->p2ps_prov) { 4067 adv_id = p2p->p2ps_prov->adv_id; 4068 adv_mac = p2p->p2ps_prov->adv_mac; 4069 } 4070 4071 if (p2p->cfg->prov_disc_fail) 4072 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 4073 p2p->pending_pd_devaddr, 4074 for_join ? 4075 P2P_PROV_DISC_TIMEOUT_JOIN : 4076 P2P_PROV_DISC_TIMEOUT, 4077 adv_id, adv_mac, NULL); 4078 p2p_reset_pending_pd(p2p); 4079 } 4080 } 4081 4082 4083 static void p2p_timeout_invite(struct p2p_data *p2p) 4084 { 4085 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4086 p2p_set_state(p2p, P2P_INVITE_LISTEN); 4087 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 4088 /* 4089 * Better remain on operating channel instead of listen channel 4090 * when running a group. 4091 */ 4092 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 4093 p2p_set_timeout(p2p, 0, 100000); 4094 return; 4095 } 4096 p2p_listen_in_find(p2p, 0); 4097 } 4098 4099 4100 static void p2p_timeout_invite_listen(struct p2p_data *p2p) 4101 { 4102 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 4103 p2p_set_state(p2p, P2P_INVITE); 4104 p2p_invite_send(p2p, p2p->invite_peer, 4105 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id); 4106 } else { 4107 if (p2p->invite_peer) { 4108 p2p_dbg(p2p, "Invitation Request retry limit reached"); 4109 if (p2p->cfg->invitation_result) 4110 p2p->cfg->invitation_result( 4111 p2p->cfg->cb_ctx, -1, NULL, NULL, 4112 p2p->invite_peer->info.p2p_device_addr, 4113 0, 0); 4114 } 4115 p2p_set_state(p2p, P2P_IDLE); 4116 } 4117 } 4118 4119 4120 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 4121 { 4122 struct p2p_data *p2p = eloop_ctx; 4123 4124 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 4125 4126 p2p->in_listen = 0; 4127 if (p2p->drv_in_listen) { 4128 p2p_dbg(p2p, "Driver is still in listen state - stop it"); 4129 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 4130 } 4131 4132 switch (p2p->state) { 4133 case P2P_IDLE: 4134 /* Check if we timed out waiting for PD req */ 4135 if (p2p->pending_action_state == P2P_PENDING_PD) 4136 p2p_timeout_prov_disc_req(p2p); 4137 break; 4138 case P2P_SEARCH: 4139 /* Check if we timed out waiting for PD req */ 4140 if (p2p->pending_action_state == P2P_PENDING_PD) 4141 p2p_timeout_prov_disc_req(p2p); 4142 if (p2p->search_delay && !p2p->in_search_delay) { 4143 p2p_dbg(p2p, "Delay search operation by %u ms", 4144 p2p->search_delay); 4145 p2p->in_search_delay = 1; 4146 p2p_set_timeout(p2p, p2p->search_delay / 1000, 4147 (p2p->search_delay % 1000) * 1000); 4148 break; 4149 } 4150 p2p->in_search_delay = 0; 4151 p2p_search(p2p); 4152 break; 4153 case P2P_CONNECT: 4154 p2p_timeout_connect(p2p); 4155 break; 4156 case P2P_CONNECT_LISTEN: 4157 p2p_timeout_connect_listen(p2p); 4158 break; 4159 case P2P_GO_NEG: 4160 break; 4161 case P2P_LISTEN_ONLY: 4162 /* Check if we timed out waiting for PD req */ 4163 if (p2p->pending_action_state == P2P_PENDING_PD) 4164 p2p_timeout_prov_disc_req(p2p); 4165 4166 if (p2p->ext_listen_only) { 4167 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 4168 p2p->ext_listen_only = 0; 4169 p2p_set_state(p2p, P2P_IDLE); 4170 } 4171 break; 4172 case P2P_WAIT_PEER_CONNECT: 4173 p2p_timeout_wait_peer_connect(p2p); 4174 break; 4175 case P2P_WAIT_PEER_IDLE: 4176 p2p_timeout_wait_peer_idle(p2p); 4177 break; 4178 case P2P_SD_DURING_FIND: 4179 p2p_timeout_sd_during_find(p2p); 4180 break; 4181 case P2P_PROVISIONING: 4182 break; 4183 case P2P_PD_DURING_FIND: 4184 p2p_timeout_prov_disc_during_find(p2p); 4185 break; 4186 case P2P_INVITE: 4187 p2p_timeout_invite(p2p); 4188 break; 4189 case P2P_INVITE_LISTEN: 4190 p2p_timeout_invite_listen(p2p); 4191 break; 4192 } 4193 } 4194 4195 4196 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 4197 { 4198 struct p2p_device *dev; 4199 4200 dev = p2p_get_device(p2p, peer_addr); 4201 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 4202 MACSTR, MAC2STR(peer_addr)); 4203 if (dev == NULL) { 4204 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 4205 return -1; 4206 } 4207 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 4208 dev->flags |= P2P_DEV_USER_REJECTED; 4209 return 0; 4210 } 4211 4212 4213 const char * p2p_wps_method_text(enum p2p_wps_method method) 4214 { 4215 switch (method) { 4216 case WPS_NOT_READY: 4217 return "not-ready"; 4218 case WPS_PIN_DISPLAY: 4219 return "Display"; 4220 case WPS_PIN_KEYPAD: 4221 return "Keypad"; 4222 case WPS_PBC: 4223 return "PBC"; 4224 case WPS_NFC: 4225 return "NFC"; 4226 case WPS_P2PS: 4227 return "P2PS"; 4228 } 4229 4230 return "??"; 4231 } 4232 4233 4234 static const char * p2p_go_state_text(enum p2p_go_state go_state) 4235 { 4236 switch (go_state) { 4237 case UNKNOWN_GO: 4238 return "unknown"; 4239 case LOCAL_GO: 4240 return "local"; 4241 case REMOTE_GO: 4242 return "remote"; 4243 } 4244 4245 return "??"; 4246 } 4247 4248 4249 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 4250 const u8 *addr, int next) 4251 { 4252 struct p2p_device *dev; 4253 4254 if (addr) 4255 dev = p2p_get_device(p2p, addr); 4256 else 4257 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4258 4259 if (dev && next) { 4260 dev = dl_list_first(&dev->list, struct p2p_device, list); 4261 if (&dev->list == &p2p->devices) 4262 dev = NULL; 4263 } 4264 4265 if (dev == NULL) 4266 return NULL; 4267 4268 return &dev->info; 4269 } 4270 4271 4272 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 4273 char *buf, size_t buflen) 4274 { 4275 struct p2p_device *dev; 4276 int res; 4277 char *pos, *end; 4278 struct os_reltime now; 4279 4280 if (info == NULL) 4281 return -1; 4282 4283 dev = (struct p2p_device *) (((u8 *) info) - 4284 offsetof(struct p2p_device, info)); 4285 4286 pos = buf; 4287 end = buf + buflen; 4288 4289 os_get_reltime(&now); 4290 res = os_snprintf(pos, end - pos, 4291 "age=%d\n" 4292 "listen_freq=%d\n" 4293 "wps_method=%s\n" 4294 "interface_addr=" MACSTR "\n" 4295 "member_in_go_dev=" MACSTR "\n" 4296 "member_in_go_iface=" MACSTR "\n" 4297 "go_neg_req_sent=%d\n" 4298 "go_state=%s\n" 4299 "dialog_token=%u\n" 4300 "intended_addr=" MACSTR "\n" 4301 "country=%c%c\n" 4302 "oper_freq=%d\n" 4303 "req_config_methods=0x%x\n" 4304 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 4305 "status=%d\n" 4306 "invitation_reqs=%u\n", 4307 (int) (now.sec - dev->last_seen.sec), 4308 dev->listen_freq, 4309 p2p_wps_method_text(dev->wps_method), 4310 MAC2STR(dev->interface_addr), 4311 MAC2STR(dev->member_in_go_dev), 4312 MAC2STR(dev->member_in_go_iface), 4313 dev->go_neg_req_sent, 4314 p2p_go_state_text(dev->go_state), 4315 dev->dialog_token, 4316 MAC2STR(dev->intended_addr), 4317 dev->country[0] ? dev->country[0] : '_', 4318 dev->country[1] ? dev->country[1] : '_', 4319 dev->oper_freq, 4320 dev->req_config_methods, 4321 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 4322 "[PROBE_REQ_ONLY]" : "", 4323 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 4324 dev->flags & P2P_DEV_NOT_YET_READY ? 4325 "[NOT_YET_READY]" : "", 4326 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 4327 "[PD_PEER_DISPLAY]" : "", 4328 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 4329 "[PD_PEER_KEYPAD]" : "", 4330 dev->flags & P2P_DEV_PD_PEER_P2PS ? 4331 "[PD_PEER_P2PS]" : "", 4332 dev->flags & P2P_DEV_USER_REJECTED ? 4333 "[USER_REJECTED]" : "", 4334 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 4335 "[PEER_WAITING_RESPONSE]" : "", 4336 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 4337 "[PREFER_PERSISTENT_GROUP]" : "", 4338 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 4339 "[WAIT_GO_NEG_RESPONSE]" : "", 4340 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 4341 "[WAIT_GO_NEG_CONFIRM]" : "", 4342 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 4343 "[GROUP_CLIENT_ONLY]" : "", 4344 dev->flags & P2P_DEV_FORCE_FREQ ? 4345 "[FORCE_FREQ]" : "", 4346 dev->flags & P2P_DEV_PD_FOR_JOIN ? 4347 "[PD_FOR_JOIN]" : "", 4348 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ? 4349 "[LAST_SEEN_AS_GROUP_CLIENT]" : "", 4350 dev->status, 4351 dev->invitation_reqs); 4352 if (os_snprintf_error(end - pos, res)) 4353 return pos - buf; 4354 pos += res; 4355 4356 if (dev->ext_listen_period) { 4357 res = os_snprintf(pos, end - pos, 4358 "ext_listen_period=%u\n" 4359 "ext_listen_interval=%u\n", 4360 dev->ext_listen_period, 4361 dev->ext_listen_interval); 4362 if (os_snprintf_error(end - pos, res)) 4363 return pos - buf; 4364 pos += res; 4365 } 4366 4367 if (dev->oper_ssid_len) { 4368 res = os_snprintf(pos, end - pos, 4369 "oper_ssid=%s\n", 4370 wpa_ssid_txt(dev->oper_ssid, 4371 dev->oper_ssid_len)); 4372 if (os_snprintf_error(end - pos, res)) 4373 return pos - buf; 4374 pos += res; 4375 } 4376 4377 #ifdef CONFIG_WIFI_DISPLAY 4378 if (dev->info.wfd_subelems) { 4379 res = os_snprintf(pos, end - pos, "wfd_subelems="); 4380 if (os_snprintf_error(end - pos, res)) 4381 return pos - buf; 4382 pos += res; 4383 4384 pos += wpa_snprintf_hex(pos, end - pos, 4385 wpabuf_head(dev->info.wfd_subelems), 4386 wpabuf_len(dev->info.wfd_subelems)); 4387 4388 res = os_snprintf(pos, end - pos, "\n"); 4389 if (os_snprintf_error(end - pos, res)) 4390 return pos - buf; 4391 pos += res; 4392 } 4393 #endif /* CONFIG_WIFI_DISPLAY */ 4394 4395 return pos - buf; 4396 } 4397 4398 4399 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 4400 { 4401 return p2p_get_device(p2p, addr) != NULL; 4402 } 4403 4404 4405 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 4406 { 4407 if (enabled) { 4408 p2p_dbg(p2p, "Client discoverability enabled"); 4409 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4410 } else { 4411 p2p_dbg(p2p, "Client discoverability disabled"); 4412 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4413 } 4414 } 4415 4416 4417 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 4418 u32 duration2, u32 interval2) 4419 { 4420 struct wpabuf *req; 4421 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 4422 u8 *len; 4423 4424 req = wpabuf_alloc(100); 4425 if (req == NULL) 4426 return NULL; 4427 4428 if (duration1 || interval1) { 4429 os_memset(&desc1, 0, sizeof(desc1)); 4430 desc1.count_type = 1; 4431 desc1.duration = duration1; 4432 desc1.interval = interval1; 4433 ptr1 = &desc1; 4434 4435 if (duration2 || interval2) { 4436 os_memset(&desc2, 0, sizeof(desc2)); 4437 desc2.count_type = 2; 4438 desc2.duration = duration2; 4439 desc2.interval = interval2; 4440 ptr2 = &desc2; 4441 } 4442 } 4443 4444 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 4445 len = p2p_buf_add_ie_hdr(req); 4446 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 4447 p2p_buf_update_ie_hdr(req, len); 4448 4449 return req; 4450 } 4451 4452 4453 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 4454 const u8 *own_interface_addr, unsigned int freq, 4455 u32 duration1, u32 interval1, u32 duration2, 4456 u32 interval2) 4457 { 4458 struct wpabuf *req; 4459 4460 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 4461 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 4462 "dur2=%u int2=%u", 4463 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 4464 freq, duration1, interval1, duration2, interval2); 4465 4466 req = p2p_build_presence_req(duration1, interval1, duration2, 4467 interval2); 4468 if (req == NULL) 4469 return -1; 4470 4471 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4472 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 4473 go_interface_addr, 4474 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 4475 p2p_dbg(p2p, "Failed to send Action frame"); 4476 } 4477 wpabuf_free(req); 4478 4479 return 0; 4480 } 4481 4482 4483 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 4484 size_t noa_len, u8 dialog_token) 4485 { 4486 struct wpabuf *resp; 4487 u8 *len; 4488 4489 resp = wpabuf_alloc(100 + noa_len); 4490 if (resp == NULL) 4491 return NULL; 4492 4493 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 4494 len = p2p_buf_add_ie_hdr(resp); 4495 p2p_buf_add_status(resp, status); 4496 if (noa) { 4497 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 4498 wpabuf_put_le16(resp, noa_len); 4499 wpabuf_put_data(resp, noa, noa_len); 4500 } else 4501 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 4502 p2p_buf_update_ie_hdr(resp, len); 4503 4504 return resp; 4505 } 4506 4507 4508 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 4509 const u8 *sa, const u8 *data, size_t len, 4510 int rx_freq) 4511 { 4512 struct p2p_message msg; 4513 u8 status; 4514 struct wpabuf *resp; 4515 size_t g; 4516 struct p2p_group *group = NULL; 4517 int parsed = 0; 4518 u8 noa[50]; 4519 int noa_len; 4520 4521 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 4522 4523 for (g = 0; g < p2p->num_groups; g++) { 4524 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 4525 ETH_ALEN) == 0) { 4526 group = p2p->groups[g]; 4527 break; 4528 } 4529 } 4530 if (group == NULL) { 4531 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 4532 MACSTR, MAC2STR(da)); 4533 return; 4534 } 4535 4536 if (p2p_parse(data, len, &msg) < 0) { 4537 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 4538 status = P2P_SC_FAIL_INVALID_PARAMS; 4539 goto fail; 4540 } 4541 parsed = 1; 4542 4543 if (msg.noa == NULL) { 4544 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 4545 status = P2P_SC_FAIL_INVALID_PARAMS; 4546 goto fail; 4547 } 4548 4549 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 4550 4551 fail: 4552 if (p2p->cfg->get_noa) 4553 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 4554 sizeof(noa)); 4555 else 4556 noa_len = -1; 4557 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 4558 noa_len > 0 ? noa_len : 0, 4559 msg.dialog_token); 4560 if (parsed) 4561 p2p_parse_free(&msg); 4562 if (resp == NULL) 4563 return; 4564 4565 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4566 if (p2p_send_action(p2p, rx_freq, sa, da, da, 4567 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 4568 p2p_dbg(p2p, "Failed to send Action frame"); 4569 } 4570 wpabuf_free(resp); 4571 } 4572 4573 4574 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 4575 const u8 *sa, const u8 *data, size_t len) 4576 { 4577 struct p2p_message msg; 4578 4579 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 4580 4581 if (p2p_parse(data, len, &msg) < 0) { 4582 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 4583 return; 4584 } 4585 4586 if (msg.status == NULL || msg.noa == NULL) { 4587 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 4588 p2p_parse_free(&msg); 4589 return; 4590 } 4591 4592 if (p2p->cfg->presence_resp) { 4593 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status, 4594 msg.noa, msg.noa_len); 4595 } 4596 4597 if (*msg.status) { 4598 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 4599 *msg.status); 4600 p2p_parse_free(&msg); 4601 return; 4602 } 4603 4604 p2p_dbg(p2p, "P2P Presence Request was accepted"); 4605 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 4606 msg.noa, msg.noa_len); 4607 /* TODO: process NoA */ 4608 p2p_parse_free(&msg); 4609 } 4610 4611 4612 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4613 { 4614 struct p2p_data *p2p = eloop_ctx; 4615 4616 if (p2p->ext_listen_interval) { 4617 /* Schedule next extended listen timeout */ 4618 eloop_register_timeout(p2p->ext_listen_interval_sec, 4619 p2p->ext_listen_interval_usec, 4620 p2p_ext_listen_timeout, p2p, NULL); 4621 } 4622 4623 if ((p2p->cfg->is_p2p_in_progress && 4624 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) || 4625 (p2p->pending_action_state == P2P_PENDING_PD && 4626 p2p->pd_retries > 0)) { 4627 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)", 4628 p2p_state_txt(p2p->state)); 4629 return; 4630 } 4631 4632 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 4633 /* 4634 * This should not really happen, but it looks like the Listen 4635 * command may fail is something else (e.g., a scan) was 4636 * running at an inconvenient time. As a workaround, allow new 4637 * Extended Listen operation to be started. 4638 */ 4639 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 4640 p2p->ext_listen_only = 0; 4641 p2p_set_state(p2p, P2P_IDLE); 4642 } 4643 4644 if (p2p->state != P2P_IDLE) { 4645 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 4646 return; 4647 } 4648 4649 p2p_dbg(p2p, "Extended Listen timeout"); 4650 p2p->ext_listen_only = 1; 4651 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 4652 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 4653 p2p->ext_listen_only = 0; 4654 } 4655 } 4656 4657 4658 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 4659 unsigned int interval) 4660 { 4661 if (period > 65535 || interval > 65535 || period > interval || 4662 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 4663 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 4664 period, interval); 4665 return -1; 4666 } 4667 4668 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 4669 4670 if (interval == 0) { 4671 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 4672 p2p->ext_listen_period = 0; 4673 p2p->ext_listen_interval = 0; 4674 return 0; 4675 } 4676 4677 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 4678 period, interval); 4679 p2p->ext_listen_period = period; 4680 p2p->ext_listen_interval = interval; 4681 p2p->ext_listen_interval_sec = interval / 1000; 4682 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 4683 4684 eloop_register_timeout(p2p->ext_listen_interval_sec, 4685 p2p->ext_listen_interval_usec, 4686 p2p_ext_listen_timeout, p2p, NULL); 4687 4688 return 0; 4689 } 4690 4691 4692 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4693 const u8 *ie, size_t ie_len) 4694 { 4695 struct p2p_message msg; 4696 4697 if (bssid == NULL || ie == NULL) 4698 return; 4699 4700 os_memset(&msg, 0, sizeof(msg)); 4701 if (p2p_parse_ies(ie, ie_len, &msg)) 4702 return; 4703 if (msg.minor_reason_code == NULL) { 4704 p2p_parse_free(&msg); 4705 return; 4706 } 4707 4708 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 4709 " reason_code=%u minor_reason_code=%u", 4710 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4711 4712 p2p_parse_free(&msg); 4713 } 4714 4715 4716 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4717 const u8 *ie, size_t ie_len) 4718 { 4719 struct p2p_message msg; 4720 4721 if (bssid == NULL || ie == NULL) 4722 return; 4723 4724 os_memset(&msg, 0, sizeof(msg)); 4725 if (p2p_parse_ies(ie, ie_len, &msg)) 4726 return; 4727 if (msg.minor_reason_code == NULL) { 4728 p2p_parse_free(&msg); 4729 return; 4730 } 4731 4732 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR 4733 " reason_code=%u minor_reason_code=%u", 4734 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4735 4736 p2p_parse_free(&msg); 4737 } 4738 4739 4740 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 4741 { 4742 if (enabled) { 4743 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 4744 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4745 } else { 4746 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 4747 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4748 } 4749 } 4750 4751 4752 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class, 4753 u8 *op_channel, 4754 struct wpa_freq_range_list *avoid_list, 4755 struct wpa_freq_range_list *disallow_list) 4756 { 4757 return p2p_channel_random_social(&p2p->channels, op_class, op_channel, 4758 avoid_list, disallow_list); 4759 } 4760 4761 4762 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 4763 u8 forced) 4764 { 4765 if (p2p_channel_to_freq(reg_class, channel) < 0) 4766 return -1; 4767 4768 /* 4769 * Listen channel was set in configuration or set by control interface; 4770 * cannot override it. 4771 */ 4772 if (p2p->cfg->channel_forced && forced == 0) { 4773 p2p_dbg(p2p, 4774 "Listen channel was previously configured - do not override based on optimization"); 4775 return -1; 4776 } 4777 4778 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 4779 reg_class, channel); 4780 4781 if (p2p->state == P2P_IDLE) { 4782 p2p->cfg->reg_class = reg_class; 4783 p2p->cfg->channel = channel; 4784 p2p->cfg->channel_forced = forced; 4785 } else { 4786 p2p_dbg(p2p, "Defer setting listen channel"); 4787 p2p->pending_reg_class = reg_class; 4788 p2p->pending_channel = channel; 4789 p2p->pending_channel_forced = forced; 4790 } 4791 4792 return 0; 4793 } 4794 4795 4796 u8 p2p_get_listen_channel(struct p2p_data *p2p) 4797 { 4798 return p2p->cfg->channel; 4799 } 4800 4801 4802 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4803 { 4804 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 4805 if (postfix == NULL) { 4806 p2p->cfg->ssid_postfix_len = 0; 4807 return 0; 4808 } 4809 if (len > sizeof(p2p->cfg->ssid_postfix)) 4810 return -1; 4811 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4812 p2p->cfg->ssid_postfix_len = len; 4813 return 0; 4814 } 4815 4816 4817 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4818 int cfg_op_channel) 4819 { 4820 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 4821 return -1; 4822 4823 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 4824 op_reg_class, op_channel); 4825 p2p->cfg->op_reg_class = op_reg_class; 4826 p2p->cfg->op_channel = op_channel; 4827 p2p->cfg->cfg_op_channel = cfg_op_channel; 4828 return 0; 4829 } 4830 4831 4832 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4833 const struct p2p_channel *pref_chan) 4834 { 4835 struct p2p_channel *n; 4836 4837 if (pref_chan) { 4838 n = os_memdup(pref_chan, 4839 num_pref_chan * sizeof(struct p2p_channel)); 4840 if (n == NULL) 4841 return -1; 4842 } else 4843 n = NULL; 4844 4845 os_free(p2p->cfg->pref_chan); 4846 p2p->cfg->pref_chan = n; 4847 p2p->cfg->num_pref_chan = num_pref_chan; 4848 4849 return 0; 4850 } 4851 4852 4853 int p2p_set_no_go_freq(struct p2p_data *p2p, 4854 const struct wpa_freq_range_list *list) 4855 { 4856 struct wpa_freq_range *tmp; 4857 4858 if (list == NULL || list->num == 0) { 4859 os_free(p2p->no_go_freq.range); 4860 p2p->no_go_freq.range = NULL; 4861 p2p->no_go_freq.num = 0; 4862 return 0; 4863 } 4864 4865 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range)); 4866 if (tmp == NULL) 4867 return -1; 4868 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range)); 4869 os_free(p2p->no_go_freq.range); 4870 p2p->no_go_freq.range = tmp; 4871 p2p->no_go_freq.num = list->num; 4872 p2p_dbg(p2p, "Updated no GO chan list"); 4873 4874 return 0; 4875 } 4876 4877 4878 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4879 u8 *iface_addr) 4880 { 4881 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4882 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4883 return -1; 4884 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4885 return 0; 4886 } 4887 4888 4889 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4890 u8 *dev_addr) 4891 { 4892 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4893 if (dev == NULL) 4894 return -1; 4895 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4896 return 0; 4897 } 4898 4899 4900 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4901 { 4902 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4903 if (is_zero_ether_addr(p2p->peer_filter)) 4904 p2p_dbg(p2p, "Disable peer filter"); 4905 else 4906 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4907 MAC2STR(p2p->peer_filter)); 4908 } 4909 4910 4911 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4912 { 4913 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4914 if (p2p->cross_connect == enabled) 4915 return; 4916 p2p->cross_connect = enabled; 4917 /* TODO: may need to tear down any action group where we are GO(?) */ 4918 } 4919 4920 4921 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4922 { 4923 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4924 if (dev == NULL) 4925 return -1; 4926 if (dev->oper_freq <= 0) 4927 return -1; 4928 return dev->oper_freq; 4929 } 4930 4931 4932 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4933 { 4934 p2p_dbg(p2p, "Intra BSS distribution %s", 4935 enabled ? "enabled" : "disabled"); 4936 p2p->cfg->p2p_intra_bss = enabled; 4937 } 4938 4939 4940 void p2p_update_channel_list(struct p2p_data *p2p, 4941 const struct p2p_channels *chan, 4942 const struct p2p_channels *cli_chan) 4943 { 4944 p2p_dbg(p2p, "Update channel list"); 4945 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4946 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 4947 os_memcpy(&p2p->cfg->cli_channels, cli_chan, 4948 sizeof(struct p2p_channels)); 4949 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 4950 } 4951 4952 4953 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4954 const u8 *src, const u8 *bssid, const u8 *buf, 4955 size_t len, unsigned int wait_time) 4956 { 4957 int res, scheduled; 4958 4959 res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4960 buf, len, wait_time, &scheduled); 4961 if (res == 0 && scheduled && p2p->in_listen && freq > 0 && 4962 p2p->drv_in_listen > 0 && 4963 (unsigned int) p2p->drv_in_listen != freq) { 4964 p2p_dbg(p2p, 4965 "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz", 4966 p2p->drv_in_listen, freq); 4967 p2p_stop_listen_for_freq(p2p, freq); 4968 } 4969 return res; 4970 } 4971 4972 4973 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4974 int freq_overall) 4975 { 4976 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 4977 freq_24, freq_5, freq_overall); 4978 p2p->best_freq_24 = freq_24; 4979 p2p->best_freq_5 = freq_5; 4980 p2p->best_freq_overall = freq_overall; 4981 } 4982 4983 4984 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 4985 { 4986 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 4987 p2p->own_freq_preference = freq; 4988 } 4989 4990 4991 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4992 { 4993 if (p2p == NULL || p2p->go_neg_peer == NULL) 4994 return NULL; 4995 return p2p->go_neg_peer->info.p2p_device_addr; 4996 } 4997 4998 4999 const struct p2p_peer_info * 5000 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 5001 { 5002 struct p2p_device *dev; 5003 5004 if (addr) { 5005 dev = p2p_get_device(p2p, addr); 5006 if (!dev) 5007 return NULL; 5008 5009 if (!next) { 5010 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5011 return NULL; 5012 5013 return &dev->info; 5014 } else { 5015 do { 5016 dev = dl_list_first(&dev->list, 5017 struct p2p_device, 5018 list); 5019 if (!dev || &dev->list == &p2p->devices) 5020 return NULL; 5021 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 5022 } 5023 } else { 5024 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 5025 if (!dev) 5026 return NULL; 5027 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 5028 dev = dl_list_first(&dev->list, 5029 struct p2p_device, 5030 list); 5031 if (!dev || &dev->list == &p2p->devices) 5032 return NULL; 5033 } 5034 } 5035 5036 return &dev->info; 5037 } 5038 5039 5040 int p2p_in_progress(struct p2p_data *p2p) 5041 { 5042 if (p2p == NULL) 5043 return 0; 5044 if (p2p->state == P2P_SEARCH) 5045 return 2; 5046 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 5047 } 5048 5049 5050 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 5051 u8 client_timeout) 5052 { 5053 if (p2p) { 5054 p2p->go_timeout = go_timeout; 5055 p2p->client_timeout = client_timeout; 5056 } 5057 } 5058 5059 5060 #ifdef CONFIG_WIFI_DISPLAY 5061 5062 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 5063 { 5064 size_t g; 5065 struct p2p_group *group; 5066 5067 for (g = 0; g < p2p->num_groups; g++) { 5068 group = p2p->groups[g]; 5069 p2p_group_force_beacon_update_ies(group); 5070 } 5071 } 5072 5073 5074 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 5075 { 5076 wpabuf_free(p2p->wfd_ie_beacon); 5077 p2p->wfd_ie_beacon = ie; 5078 p2p_update_wfd_ie_groups(p2p); 5079 return 0; 5080 } 5081 5082 5083 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 5084 { 5085 wpabuf_free(p2p->wfd_ie_probe_req); 5086 p2p->wfd_ie_probe_req = ie; 5087 return 0; 5088 } 5089 5090 5091 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 5092 { 5093 wpabuf_free(p2p->wfd_ie_probe_resp); 5094 p2p->wfd_ie_probe_resp = ie; 5095 p2p_update_wfd_ie_groups(p2p); 5096 return 0; 5097 } 5098 5099 5100 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 5101 { 5102 wpabuf_free(p2p->wfd_ie_assoc_req); 5103 p2p->wfd_ie_assoc_req = ie; 5104 return 0; 5105 } 5106 5107 5108 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 5109 { 5110 wpabuf_free(p2p->wfd_ie_invitation); 5111 p2p->wfd_ie_invitation = ie; 5112 return 0; 5113 } 5114 5115 5116 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 5117 { 5118 wpabuf_free(p2p->wfd_ie_prov_disc_req); 5119 p2p->wfd_ie_prov_disc_req = ie; 5120 return 0; 5121 } 5122 5123 5124 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 5125 { 5126 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 5127 p2p->wfd_ie_prov_disc_resp = ie; 5128 return 0; 5129 } 5130 5131 5132 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 5133 { 5134 wpabuf_free(p2p->wfd_ie_go_neg); 5135 p2p->wfd_ie_go_neg = ie; 5136 return 0; 5137 } 5138 5139 5140 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5141 { 5142 wpabuf_free(p2p->wfd_dev_info); 5143 if (elem) { 5144 p2p->wfd_dev_info = wpabuf_dup(elem); 5145 if (p2p->wfd_dev_info == NULL) 5146 return -1; 5147 } else 5148 p2p->wfd_dev_info = NULL; 5149 5150 return 0; 5151 } 5152 5153 5154 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5155 { 5156 wpabuf_free(p2p->wfd_r2_dev_info); 5157 if (elem) { 5158 p2p->wfd_r2_dev_info = wpabuf_dup(elem); 5159 if (p2p->wfd_r2_dev_info == NULL) 5160 return -1; 5161 } else 5162 p2p->wfd_r2_dev_info = NULL; 5163 5164 return 0; 5165 } 5166 5167 5168 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 5169 { 5170 wpabuf_free(p2p->wfd_assoc_bssid); 5171 if (elem) { 5172 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 5173 if (p2p->wfd_assoc_bssid == NULL) 5174 return -1; 5175 } else 5176 p2p->wfd_assoc_bssid = NULL; 5177 5178 return 0; 5179 } 5180 5181 5182 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 5183 const struct wpabuf *elem) 5184 { 5185 wpabuf_free(p2p->wfd_coupled_sink_info); 5186 if (elem) { 5187 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 5188 if (p2p->wfd_coupled_sink_info == NULL) 5189 return -1; 5190 } else 5191 p2p->wfd_coupled_sink_info = NULL; 5192 5193 return 0; 5194 } 5195 5196 #endif /* CONFIG_WIFI_DISPLAY */ 5197 5198 5199 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 5200 int max_disc_tu) 5201 { 5202 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 5203 return -1; 5204 5205 p2p->min_disc_int = min_disc_int; 5206 p2p->max_disc_int = max_disc_int; 5207 p2p->max_disc_tu = max_disc_tu; 5208 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 5209 min_disc_int, max_disc_int, max_disc_tu); 5210 5211 return 0; 5212 } 5213 5214 5215 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 5216 { 5217 va_list ap; 5218 char buf[500]; 5219 5220 if (!p2p->cfg->debug_print) 5221 return; 5222 5223 va_start(ap, fmt); 5224 vsnprintf(buf, sizeof(buf), fmt, ap); 5225 buf[sizeof(buf) - 1] = '\0'; 5226 va_end(ap); 5227 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 5228 } 5229 5230 5231 void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 5232 { 5233 va_list ap; 5234 char buf[500]; 5235 5236 if (!p2p->cfg->debug_print) 5237 return; 5238 5239 va_start(ap, fmt); 5240 vsnprintf(buf, sizeof(buf), fmt, ap); 5241 buf[sizeof(buf) - 1] = '\0'; 5242 va_end(ap); 5243 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 5244 } 5245 5246 5247 void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 5248 { 5249 va_list ap; 5250 char buf[500]; 5251 5252 if (!p2p->cfg->debug_print) 5253 return; 5254 5255 va_start(ap, fmt); 5256 vsnprintf(buf, sizeof(buf), fmt, ap); 5257 buf[sizeof(buf) - 1] = '\0'; 5258 va_end(ap); 5259 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 5260 } 5261 5262 5263 void p2p_loop_on_known_peers(struct p2p_data *p2p, 5264 void (*peer_callback)(struct p2p_peer_info *peer, 5265 void *user_data), 5266 void *user_data) 5267 { 5268 struct p2p_device *dev, *n; 5269 5270 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 5271 peer_callback(&dev->info, user_data); 5272 } 5273 } 5274 5275 5276 #ifdef CONFIG_WPS_NFC 5277 5278 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p, 5279 int client_freq, 5280 const u8 *go_dev_addr, 5281 const u8 *ssid, size_t ssid_len) 5282 { 5283 struct wpabuf *buf; 5284 u8 op_class, channel; 5285 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP; 5286 5287 buf = wpabuf_alloc(1000); 5288 if (buf == NULL) 5289 return NULL; 5290 5291 op_class = p2p->cfg->reg_class; 5292 channel = p2p->cfg->channel; 5293 5294 p2p_buf_add_capability(buf, p2p->dev_capab & 5295 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 5296 p2p_buf_add_device_info(buf, p2p, NULL); 5297 5298 if (p2p->num_groups > 0) { 5299 int freq = p2p_group_get_freq(p2p->groups[0]); 5300 role = P2P_GO_IN_A_GROUP; 5301 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) { 5302 p2p_dbg(p2p, 5303 "Unknown GO operating frequency %d MHz for NFC handover", 5304 freq); 5305 wpabuf_free(buf); 5306 return NULL; 5307 } 5308 } else if (client_freq > 0) { 5309 role = P2P_CLIENT_IN_A_GROUP; 5310 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) { 5311 p2p_dbg(p2p, 5312 "Unknown client operating frequency %d MHz for NFC handover", 5313 client_freq); 5314 wpabuf_free(buf); 5315 return NULL; 5316 } 5317 } 5318 5319 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class, 5320 channel, role); 5321 5322 if (p2p->num_groups > 0) { 5323 /* Limit number of clients to avoid very long message */ 5324 p2p_buf_add_group_info(p2p->groups[0], buf, 5); 5325 p2p_group_buf_add_id(p2p->groups[0], buf); 5326 } else if (client_freq > 0 && 5327 go_dev_addr && !is_zero_ether_addr(go_dev_addr) && 5328 ssid && ssid_len > 0) { 5329 /* 5330 * Add the optional P2P Group ID to indicate in which group this 5331 * device is a P2P Client. 5332 */ 5333 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len); 5334 } 5335 5336 return buf; 5337 } 5338 5339 5340 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 5341 int client_freq, 5342 const u8 *go_dev_addr, 5343 const u8 *ssid, size_t ssid_len) 5344 { 5345 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5346 ssid_len); 5347 } 5348 5349 5350 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 5351 int client_freq, 5352 const u8 *go_dev_addr, 5353 const u8 *ssid, size_t ssid_len) 5354 { 5355 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5356 ssid_len); 5357 } 5358 5359 5360 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 5361 struct p2p_nfc_params *params) 5362 { 5363 struct p2p_message msg; 5364 struct p2p_device *dev; 5365 const u8 *p2p_dev_addr; 5366 int freq; 5367 enum p2p_role_indication role; 5368 5369 params->next_step = NO_ACTION; 5370 5371 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len, 5372 params->p2p_attr, params->p2p_len, &msg)) { 5373 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC"); 5374 p2p_parse_free(&msg); 5375 return -1; 5376 } 5377 5378 if (msg.p2p_device_addr) 5379 p2p_dev_addr = msg.p2p_device_addr; 5380 else if (msg.device_id) 5381 p2p_dev_addr = msg.device_id; 5382 else { 5383 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 5384 p2p_parse_free(&msg); 5385 return -1; 5386 } 5387 5388 if (msg.oob_dev_password) { 5389 os_memcpy(params->oob_dev_pw, msg.oob_dev_password, 5390 msg.oob_dev_password_len); 5391 params->oob_dev_pw_len = msg.oob_dev_password_len; 5392 } 5393 5394 dev = p2p_create_device(p2p, p2p_dev_addr); 5395 if (dev == NULL) { 5396 p2p_parse_free(&msg); 5397 return -1; 5398 } 5399 5400 params->peer = &dev->info; 5401 5402 os_get_reltime(&dev->last_seen); 5403 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 5404 p2p_copy_wps_info(p2p, dev, 0, &msg); 5405 5406 if (!msg.oob_go_neg_channel) { 5407 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included"); 5408 p2p_parse_free(&msg); 5409 return -1; 5410 } 5411 5412 if (msg.oob_go_neg_channel[3] == 0 && 5413 msg.oob_go_neg_channel[4] == 0) 5414 freq = 0; 5415 else 5416 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3], 5417 msg.oob_go_neg_channel[4]); 5418 if (freq < 0) { 5419 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel"); 5420 p2p_parse_free(&msg); 5421 return -1; 5422 } 5423 role = msg.oob_go_neg_channel[5]; 5424 5425 if (role == P2P_GO_IN_A_GROUP) { 5426 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq); 5427 params->go_freq = freq; 5428 } else if (role == P2P_CLIENT_IN_A_GROUP) { 5429 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz", 5430 freq); 5431 params->go_freq = freq; 5432 } else 5433 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq); 5434 dev->oob_go_neg_freq = freq; 5435 5436 if (!params->sel && role != P2P_GO_IN_A_GROUP) { 5437 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 5438 p2p->cfg->channel); 5439 if (freq < 0) { 5440 p2p_dbg(p2p, "Own listen channel not known"); 5441 p2p_parse_free(&msg); 5442 return -1; 5443 } 5444 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq); 5445 dev->oob_go_neg_freq = freq; 5446 } 5447 5448 if (msg.group_id) { 5449 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN); 5450 params->go_ssid_len = msg.group_id_len - ETH_ALEN; 5451 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN, 5452 params->go_ssid_len); 5453 } 5454 5455 if (dev->flags & P2P_DEV_USER_REJECTED) { 5456 p2p_dbg(p2p, "Do not report rejected device"); 5457 p2p_parse_free(&msg); 5458 return 0; 5459 } 5460 5461 if (!(dev->flags & P2P_DEV_REPORTED)) { 5462 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info, 5463 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 5464 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 5465 } 5466 p2p_parse_free(&msg); 5467 5468 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0) 5469 params->next_step = BOTH_GO; 5470 else if (role == P2P_GO_IN_A_GROUP) 5471 params->next_step = JOIN_GROUP; 5472 else if (role == P2P_CLIENT_IN_A_GROUP) { 5473 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 5474 params->next_step = PEER_CLIENT; 5475 } else if (p2p->num_groups > 0) 5476 params->next_step = AUTH_JOIN; 5477 else if (params->sel) 5478 params->next_step = INIT_GO_NEG; 5479 else 5480 params->next_step = RESP_GO_NEG; 5481 5482 return 0; 5483 } 5484 5485 5486 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 5487 int go_intent, 5488 const u8 *own_interface_addr) 5489 { 5490 5491 p2p->authorized_oob_dev_pw_id = dev_pw_id; 5492 if (dev_pw_id == 0) { 5493 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover"); 5494 return; 5495 } 5496 5497 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover", 5498 dev_pw_id); 5499 5500 p2p->go_intent = go_intent; 5501 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 5502 } 5503 5504 #endif /* CONFIG_WPS_NFC */ 5505 5506 5507 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len) 5508 { 5509 if (len < 8 || len > 63) 5510 return -1; 5511 p2p->cfg->passphrase_len = len; 5512 return 0; 5513 } 5514 5515 5516 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem) 5517 { 5518 p2p->vendor_elem = vendor_elem; 5519 } 5520 5521 5522 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx) 5523 { 5524 struct p2p_data *p2p = eloop_ctx; 5525 5526 p2p_dbg(p2p, 5527 "Timeout on waiting peer to become ready for GO Negotiation"); 5528 p2p_go_neg_failed(p2p, -1); 5529 } 5530 5531 5532 void p2p_set_own_pref_freq_list(struct p2p_data *p2p, 5533 const unsigned int *pref_freq_list, 5534 unsigned int size) 5535 { 5536 unsigned int i; 5537 5538 if (size > P2P_MAX_PREF_CHANNELS) 5539 size = P2P_MAX_PREF_CHANNELS; 5540 p2p->num_pref_freq = size; 5541 for (i = 0; i < size; i++) { 5542 p2p->pref_freq_list[i] = pref_freq_list[i]; 5543 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz", 5544 i, p2p->pref_freq_list[i]); 5545 } 5546 } 5547 5548 5549 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class, 5550 u8 chan) 5551 { 5552 p2p->override_pref_op_class = op_class; 5553 p2p->override_pref_channel = chan; 5554 } 5555 5556 5557 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p, 5558 unsigned int freq) 5559 { 5560 struct wpabuf *ies, *buf; 5561 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 5562 int ret; 5563 5564 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 5565 if (!ies) { 5566 wpa_printf(MSG_ERROR, 5567 "CTRL: Failed to build Probe Response IEs"); 5568 return NULL; 5569 } 5570 5571 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 5572 if (!buf) { 5573 wpabuf_free(ies); 5574 return NULL; 5575 } 5576 5577 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq); 5578 wpabuf_free(ies); 5579 if (ret) { 5580 wpabuf_free(buf); 5581 return NULL; 5582 } 5583 5584 return buf; 5585 } 5586 5587 5588 bool p2p_is_peer_6ghz_capab(struct p2p_data *p2p, const u8 *addr) 5589 { 5590 struct p2p_device *dev; 5591 5592 dev = p2p_get_device(p2p, addr); 5593 if (!dev) 5594 return false; 5595 5596 return !!(dev->info.dev_capab & P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE); 5597 } 5598 5599 5600 void p2p_set_6ghz_dev_capab(struct p2p_data *p2p, bool allow_6ghz) 5601 { 5602 p2p->p2p_6ghz_capable = allow_6ghz; 5603 p2p->allow_6ghz = allow_6ghz; 5604 p2p_dbg(p2p, "Set 6 GHz capability to %d", allow_6ghz); 5605 5606 if (allow_6ghz) 5607 p2p->dev_capab |= P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE; 5608 else 5609 p2p->dev_capab &= ~P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE; 5610 } 5611 5612 5613 bool is_p2p_6ghz_capable(struct p2p_data *p2p) 5614 { 5615 return p2p->p2p_6ghz_capable; 5616 } 5617 5618 5619 bool p2p_wfd_enabled(struct p2p_data *p2p) 5620 { 5621 #ifdef CONFIG_WIFI_DISPLAY 5622 return p2p->wfd_ie_probe_req != NULL; 5623 #else /* CONFIG_WIFI_DISPLAY */ 5624 return false; 5625 #endif /* CONFIG_WIFI_DISPLAY */ 5626 } 5627 5628 5629 bool p2p_peer_wfd_enabled(struct p2p_data *p2p, const u8 *peer_addr) 5630 { 5631 #ifdef CONFIG_WIFI_DISPLAY 5632 struct p2p_device *dev; 5633 5634 dev = p2p_get_device(p2p, peer_addr); 5635 return dev && dev->info.wfd_subelems != NULL; 5636 #else /* CONFIG_WIFI_DISPLAY */ 5637 return false; 5638 #endif /* CONFIG_WIFI_DISPLAY */ 5639 } 5640 5641 5642 bool is_p2p_allow_6ghz(struct p2p_data *p2p) 5643 { 5644 return p2p->allow_6ghz; 5645 } 5646 5647 5648 void set_p2p_allow_6ghz(struct p2p_data *p2p, bool value) 5649 { 5650 p2p->allow_6ghz = value; 5651 } 5652