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 && 1330 ((p2p->drv_in_listen == freq && p2p->in_listen) || 1331 p2p->pending_listen_freq == (unsigned int) freq)) { 1332 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1333 return; 1334 } 1335 if (p2p->in_listen) { 1336 p2p->in_listen = 0; 1337 p2p_clear_timeout(p2p); 1338 } 1339 if (p2p->drv_in_listen) { 1340 /* 1341 * The driver may not deliver callback to p2p_listen_end() 1342 * when the operation gets canceled, so clear the internal 1343 * variable that is tracking driver state. 1344 */ 1345 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1346 p2p->drv_in_listen = 0; 1347 } 1348 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1349 } 1350 1351 1352 void p2p_stop_listen(struct p2p_data *p2p) 1353 { 1354 if (p2p->state != P2P_LISTEN_ONLY) { 1355 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1356 return; 1357 } 1358 1359 p2p_stop_listen_for_freq(p2p, 0); 1360 p2p_set_state(p2p, P2P_IDLE); 1361 } 1362 1363 1364 void p2p_stop_find(struct p2p_data *p2p) 1365 { 1366 p2p->pending_listen_freq = 0; 1367 p2p_stop_find_for_freq(p2p, 0); 1368 } 1369 1370 1371 static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1372 unsigned int force_freq, 1373 unsigned int pref_freq, int go) 1374 { 1375 u8 op_class, op_channel; 1376 unsigned int freq = force_freq ? force_freq : pref_freq; 1377 1378 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d", 1379 force_freq, pref_freq, go); 1380 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1381 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1382 return -1; 1383 } 1384 1385 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) && 1386 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class, 1387 op_channel))) { 1388 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1389 freq, op_class, op_channel); 1390 return -1; 1391 } 1392 1393 p2p->op_reg_class = op_class; 1394 p2p->op_channel = op_channel; 1395 1396 if (force_freq) { 1397 p2p->channels.reg_classes = 1; 1398 p2p->channels.reg_class[0].channels = 1; 1399 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1400 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1401 } else { 1402 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels, 1403 p2p->allow_6ghz); 1404 } 1405 1406 return 0; 1407 } 1408 1409 1410 static void p2p_prepare_channel_best(struct p2p_data *p2p) 1411 { 1412 u8 op_class, op_channel; 1413 const int op_classes_5ghz[] = { 124, 125, 115, 0 }; 1414 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 1415 const int op_classes_vht[] = { 128, 0 }; 1416 const int op_classes_edmg[] = { 181, 182, 183, 0 }; 1417 const int op_classes_6ghz[] = { 131, 0 }; 1418 1419 p2p_dbg(p2p, "Prepare channel best"); 1420 1421 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1422 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1423 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1424 == 0) { 1425 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1426 p2p->op_reg_class = op_class; 1427 p2p->op_channel = op_channel; 1428 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1429 p2p_supported_freq(p2p, p2p->best_freq_5) && 1430 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1431 == 0) { 1432 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1433 p2p->op_reg_class = op_class; 1434 p2p->op_channel = op_channel; 1435 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1436 p2p_supported_freq(p2p, p2p->best_freq_24) && 1437 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1438 &op_channel) == 0) { 1439 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1440 p2p->op_reg_class = op_class; 1441 p2p->op_channel = op_channel; 1442 } else if (p2p->cfg->num_pref_chan > 0 && 1443 p2p_channels_includes(&p2p->cfg->channels, 1444 p2p->cfg->pref_chan[0].op_class, 1445 p2p->cfg->pref_chan[0].chan)) { 1446 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1447 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1448 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1449 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_edmg, 1450 &p2p->op_reg_class, &p2p->op_channel) == 1451 0) { 1452 p2p_dbg(p2p, "Select possible EDMG channel (op_class %u channel %u) as operating channel preference", 1453 p2p->op_reg_class, p2p->op_channel); 1454 } else if (p2p->allow_6ghz && 1455 (p2p_channel_select(&p2p->cfg->channels, op_classes_6ghz, 1456 &p2p->op_reg_class, &p2p->op_channel) == 1457 0)) { 1458 p2p_dbg(p2p, "Select possible 6 GHz channel (op_class %u channel %u) as operating channel preference", 1459 p2p->op_reg_class, p2p->op_channel); 1460 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht, 1461 &p2p->op_reg_class, &p2p->op_channel) == 1462 0) { 1463 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference", 1464 p2p->op_reg_class, p2p->op_channel); 1465 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40, 1466 &p2p->op_reg_class, &p2p->op_channel) == 1467 0) { 1468 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference", 1469 p2p->op_reg_class, p2p->op_channel); 1470 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz, 1471 &p2p->op_reg_class, &p2p->op_channel) == 1472 0) { 1473 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference", 1474 p2p->op_reg_class, p2p->op_channel); 1475 } else if (p2p_channels_includes(&p2p->cfg->channels, 1476 p2p->cfg->op_reg_class, 1477 p2p->cfg->op_channel)) { 1478 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1479 p2p->op_reg_class = p2p->cfg->op_reg_class; 1480 p2p->op_channel = p2p->cfg->op_channel; 1481 } else if (p2p_channel_random_social(&p2p->cfg->channels, 1482 &p2p->op_reg_class, 1483 &p2p->op_channel, 1484 NULL, NULL) == 0) { 1485 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference", 1486 p2p->op_reg_class, p2p->op_channel); 1487 } else { 1488 /* Select any random available channel from the first available 1489 * operating class */ 1490 p2p_channel_select(&p2p->cfg->channels, NULL, 1491 &p2p->op_reg_class, 1492 &p2p->op_channel); 1493 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference", 1494 p2p->op_channel, p2p->op_reg_class); 1495 } 1496 1497 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels, p2p->allow_6ghz); 1498 } 1499 1500 1501 /** 1502 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD 1503 * @p2p: P2P module context from p2p_init() 1504 * @dev: Selected peer device 1505 * @force_freq: Forced frequency in MHz or 0 if not forced 1506 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1507 * @go: Whether the local end will be forced to be GO 1508 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1509 * 1510 * This function is used to do initial operating channel selection for GO 1511 * Negotiation prior to having received peer information or for P2PS PD 1512 * signalling. The selected channel may be further optimized in 1513 * p2p_reselect_channel() once the peer information is available. 1514 */ 1515 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1516 unsigned int force_freq, unsigned int pref_freq, int go) 1517 { 1518 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d", 1519 force_freq, pref_freq, go); 1520 if (force_freq || pref_freq) { 1521 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) < 1522 0) 1523 return -1; 1524 } else { 1525 p2p_prepare_channel_best(p2p); 1526 } 1527 p2p_channels_dump(p2p, "prepared channels", &p2p->channels); 1528 if (go) 1529 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq); 1530 else if (!force_freq) 1531 p2p_channels_union_inplace(&p2p->channels, 1532 &p2p->cfg->cli_channels); 1533 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels); 1534 1535 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1536 p2p->op_reg_class, p2p->op_channel, 1537 force_freq ? " (forced)" : ""); 1538 1539 if (force_freq) 1540 dev->flags |= P2P_DEV_FORCE_FREQ; 1541 else 1542 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1543 1544 return 0; 1545 } 1546 1547 1548 static void p2p_set_dev_persistent(struct p2p_device *dev, 1549 int persistent_group) 1550 { 1551 switch (persistent_group) { 1552 case 0: 1553 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1554 P2P_DEV_PREFER_PERSISTENT_RECONN); 1555 break; 1556 case 1: 1557 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1558 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1559 break; 1560 case 2: 1561 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1562 P2P_DEV_PREFER_PERSISTENT_RECONN; 1563 break; 1564 } 1565 } 1566 1567 1568 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1569 enum p2p_wps_method wps_method, 1570 int go_intent, const u8 *own_interface_addr, 1571 unsigned int force_freq, int persistent_group, 1572 const u8 *force_ssid, size_t force_ssid_len, 1573 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id) 1574 { 1575 struct p2p_device *dev; 1576 1577 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1578 " GO Intent=%d Intended Interface Address=" MACSTR 1579 " wps_method=%d persistent_group=%d pd_before_go_neg=%d " 1580 "oob_pw_id=%u allow_6ghz=%d", 1581 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1582 wps_method, persistent_group, pd_before_go_neg, oob_pw_id, 1583 p2p->allow_6ghz); 1584 1585 dev = p2p_get_device(p2p, peer_addr); 1586 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1587 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1588 MAC2STR(peer_addr)); 1589 return -1; 1590 } 1591 1592 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 1593 go_intent == 15) < 0) 1594 return -1; 1595 1596 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1597 if (!(dev->info.dev_capab & 1598 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1599 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1600 " that is in a group and is not discoverable", 1601 MAC2STR(peer_addr)); 1602 return -1; 1603 } 1604 if (dev->oper_freq <= 0) { 1605 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1606 " with incomplete information", 1607 MAC2STR(peer_addr)); 1608 return -1; 1609 } 1610 1611 /* 1612 * First, try to connect directly. If the peer does not 1613 * acknowledge frames, assume it is sleeping and use device 1614 * discoverability via the GO at that point. 1615 */ 1616 } 1617 1618 p2p->ssid_set = 0; 1619 if (force_ssid) { 1620 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1621 force_ssid, force_ssid_len); 1622 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1623 p2p->ssid_len = force_ssid_len; 1624 p2p->ssid_set = 1; 1625 } 1626 1627 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1628 dev->flags &= ~P2P_DEV_USER_REJECTED; 1629 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1630 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1631 if (pd_before_go_neg) 1632 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1633 else { 1634 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1635 /* 1636 * Assign dialog token and tie breaker here to use the same 1637 * values in each retry within the same GO Negotiation exchange. 1638 */ 1639 dev->dialog_token++; 1640 if (dev->dialog_token == 0) 1641 dev->dialog_token = 1; 1642 dev->tie_breaker = p2p->next_tie_breaker; 1643 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1644 } 1645 dev->connect_reqs = 0; 1646 dev->go_neg_req_sent = 0; 1647 dev->go_state = UNKNOWN_GO; 1648 p2p_set_dev_persistent(dev, persistent_group); 1649 p2p->go_intent = go_intent; 1650 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1651 1652 if (p2p->state != P2P_IDLE) 1653 p2p_stop_find(p2p); 1654 1655 dev->wps_method = wps_method; 1656 dev->oob_pw_id = oob_pw_id; 1657 dev->status = P2P_SC_SUCCESS; 1658 1659 if (p2p->p2p_scan_running) { 1660 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1661 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1662 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1663 return 0; 1664 } 1665 1666 return p2p_connect_send(p2p, dev); 1667 } 1668 1669 1670 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1671 enum p2p_wps_method wps_method, 1672 int go_intent, const u8 *own_interface_addr, 1673 unsigned int force_freq, int persistent_group, 1674 const u8 *force_ssid, size_t force_ssid_len, 1675 unsigned int pref_freq, u16 oob_pw_id) 1676 { 1677 struct p2p_device *dev; 1678 1679 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1680 " GO Intent=%d Intended Interface Address=" MACSTR 1681 " wps_method=%d persistent_group=%d oob_pw_id=%u allow_6ghz=%d", 1682 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1683 wps_method, persistent_group, oob_pw_id, p2p->allow_6ghz); 1684 1685 dev = p2p_get_device(p2p, peer_addr); 1686 if (dev == NULL) { 1687 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1688 MAC2STR(peer_addr)); 1689 return -1; 1690 } 1691 1692 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent == 1693 15) < 0) 1694 return -1; 1695 1696 p2p->ssid_set = 0; 1697 if (force_ssid) { 1698 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1699 force_ssid, force_ssid_len); 1700 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1701 p2p->ssid_len = force_ssid_len; 1702 p2p->ssid_set = 1; 1703 } 1704 1705 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1706 dev->flags &= ~P2P_DEV_USER_REJECTED; 1707 dev->go_neg_req_sent = 0; 1708 dev->go_state = UNKNOWN_GO; 1709 p2p_set_dev_persistent(dev, persistent_group); 1710 p2p->go_intent = go_intent; 1711 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1712 1713 dev->wps_method = wps_method; 1714 dev->oob_pw_id = oob_pw_id; 1715 dev->status = P2P_SC_SUCCESS; 1716 1717 return 0; 1718 } 1719 1720 1721 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1722 struct p2p_device *dev, struct p2p_message *msg) 1723 { 1724 os_get_reltime(&dev->last_seen); 1725 1726 p2p_copy_wps_info(p2p, dev, 0, msg); 1727 1728 if (msg->listen_channel) { 1729 int freq; 1730 freq = p2p_channel_to_freq(msg->listen_channel[3], 1731 msg->listen_channel[4]); 1732 if (freq < 0) { 1733 p2p_dbg(p2p, "Unknown peer Listen channel: " 1734 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1735 msg->listen_channel[0], 1736 msg->listen_channel[1], 1737 msg->listen_channel[2], 1738 msg->listen_channel[3], 1739 msg->listen_channel[4]); 1740 } else { 1741 p2p_dbg(p2p, "Update peer " MACSTR 1742 " Listen channel: %u -> %u MHz", 1743 MAC2STR(dev->info.p2p_device_addr), 1744 dev->listen_freq, freq); 1745 dev->listen_freq = freq; 1746 } 1747 } 1748 1749 if (msg->wfd_subelems) { 1750 wpabuf_free(dev->info.wfd_subelems); 1751 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1752 } 1753 1754 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1755 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1756 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1757 } else { 1758 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1759 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1760 "listen_freq=%d", 1761 MAC2STR(dev->info.p2p_device_addr), 1762 dev->info.dev_capab, dev->info.group_capab, 1763 dev->info.device_name, dev->listen_freq); 1764 } 1765 1766 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1767 1768 if (dev->flags & P2P_DEV_USER_REJECTED) { 1769 p2p_dbg(p2p, "Do not report rejected device"); 1770 return; 1771 } 1772 1773 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1774 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1775 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1776 } 1777 1778 1779 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1780 { 1781 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1782 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1783 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1784 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1785 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1786 } 1787 1788 1789 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1790 { 1791 if (p2p->ssid_set) { 1792 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len); 1793 params->ssid_len = p2p->ssid_len; 1794 } else { 1795 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1796 } 1797 p2p->ssid_set = 0; 1798 1799 p2p_random(params->passphrase, p2p->cfg->passphrase_len); 1800 return 0; 1801 } 1802 1803 1804 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1805 { 1806 struct p2p_go_neg_results res; 1807 int go = peer->go_state == LOCAL_GO; 1808 struct p2p_channels intersection; 1809 1810 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1811 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1812 1813 os_memset(&res, 0, sizeof(res)); 1814 res.role_go = go; 1815 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1816 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1817 res.wps_method = peer->wps_method; 1818 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1819 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1820 res.persistent_group = 2; 1821 else 1822 res.persistent_group = 1; 1823 } 1824 1825 if (go) { 1826 /* Setup AP mode for WPS provisioning */ 1827 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1828 p2p->op_channel); 1829 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1830 res.ssid_len = p2p->ssid_len; 1831 p2p_random(res.passphrase, p2p->cfg->passphrase_len); 1832 } else { 1833 res.freq = peer->oper_freq; 1834 if (p2p->ssid_len) { 1835 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1836 res.ssid_len = p2p->ssid_len; 1837 } 1838 } 1839 1840 p2p_channels_dump(p2p, "own channels", &p2p->channels); 1841 p2p_channels_dump(p2p, "peer channels", &peer->channels); 1842 p2p_channels_intersect(&p2p->channels, &peer->channels, 1843 &intersection); 1844 if (go) { 1845 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq); 1846 p2p_channels_dump(p2p, "intersection after no-GO removal", 1847 &intersection); 1848 } 1849 1850 p2p_channels_to_freqs(&intersection, res.freq_list, 1851 P2P_MAX_CHANNELS); 1852 1853 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1854 1855 p2p_clear_timeout(p2p); 1856 p2p->ssid_set = 0; 1857 peer->go_neg_req_sent = 0; 1858 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1859 peer->wps_method = WPS_NOT_READY; 1860 peer->oob_pw_id = 0; 1861 wpabuf_free(peer->go_neg_conf); 1862 peer->go_neg_conf = NULL; 1863 1864 p2p_set_state(p2p, P2P_PROVISIONING); 1865 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1866 } 1867 1868 1869 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1870 const u8 *data, size_t len, int rx_freq) 1871 { 1872 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1873 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1874 1875 if (len < 1) 1876 return; 1877 1878 switch (data[0]) { 1879 case P2P_GO_NEG_REQ: 1880 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1881 break; 1882 case P2P_GO_NEG_RESP: 1883 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1884 break; 1885 case P2P_GO_NEG_CONF: 1886 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1887 break; 1888 case P2P_INVITATION_REQ: 1889 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1890 rx_freq); 1891 break; 1892 case P2P_INVITATION_RESP: 1893 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1894 break; 1895 case P2P_PROV_DISC_REQ: 1896 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1897 break; 1898 case P2P_PROV_DISC_RESP: 1899 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1900 break; 1901 case P2P_DEV_DISC_REQ: 1902 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1903 break; 1904 case P2P_DEV_DISC_RESP: 1905 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1906 break; 1907 default: 1908 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1909 data[0]); 1910 break; 1911 } 1912 } 1913 1914 1915 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1916 const u8 *sa, const u8 *bssid, const u8 *data, 1917 size_t len, int freq) 1918 { 1919 if (len < 1) 1920 return; 1921 1922 switch (data[0]) { 1923 case WLAN_PA_VENDOR_SPECIFIC: 1924 data++; 1925 len--; 1926 if (len < 4) 1927 return; 1928 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1929 return; 1930 1931 data += 4; 1932 len -= 4; 1933 1934 p2p_rx_p2p_action(p2p, sa, data, len, freq); 1935 break; 1936 case WLAN_PA_GAS_INITIAL_REQ: 1937 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1938 break; 1939 case WLAN_PA_GAS_INITIAL_RESP: 1940 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1941 break; 1942 case WLAN_PA_GAS_COMEBACK_REQ: 1943 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1944 break; 1945 case WLAN_PA_GAS_COMEBACK_RESP: 1946 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1947 break; 1948 } 1949 } 1950 1951 1952 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1953 const u8 *bssid, u8 category, 1954 const u8 *data, size_t len, int freq) 1955 { 1956 if (category == WLAN_ACTION_PUBLIC) { 1957 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1958 return; 1959 } 1960 1961 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1962 return; 1963 1964 if (len < 4) 1965 return; 1966 1967 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1968 return; 1969 data += 4; 1970 len -= 4; 1971 1972 /* P2P action frame */ 1973 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1974 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1975 1976 if (len < 1) 1977 return; 1978 switch (data[0]) { 1979 case P2P_NOA: 1980 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1981 /* TODO */ 1982 break; 1983 case P2P_PRESENCE_REQ: 1984 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1985 break; 1986 case P2P_PRESENCE_RESP: 1987 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1988 break; 1989 case P2P_GO_DISC_REQ: 1990 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1991 break; 1992 default: 1993 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 1994 break; 1995 } 1996 } 1997 1998 1999 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 2000 { 2001 struct p2p_data *p2p = eloop_ctx; 2002 if (p2p->go_neg_peer == NULL) 2003 return; 2004 if (p2p->pending_listen_freq) { 2005 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start"); 2006 p2p->pending_listen_freq = 0; 2007 } 2008 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2009 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 2010 /* 2011 * Set new timeout to make sure a previously set one does not expire 2012 * too quickly while waiting for the GO Negotiation to complete. 2013 */ 2014 p2p_set_timeout(p2p, 0, 500000); 2015 p2p_connect_send(p2p, p2p->go_neg_peer); 2016 } 2017 2018 2019 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 2020 { 2021 struct p2p_data *p2p = eloop_ctx; 2022 if (p2p->invite_peer == NULL) 2023 return; 2024 if (p2p->pending_listen_freq) { 2025 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start"); 2026 p2p->pending_listen_freq = 0; 2027 } 2028 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2029 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr, 2030 p2p->invite_dev_pw_id); 2031 } 2032 2033 2034 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 2035 const u8 *ie, size_t ie_len) 2036 { 2037 struct p2p_message msg; 2038 struct p2p_device *dev; 2039 2040 os_memset(&msg, 0, sizeof(msg)); 2041 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 2042 { 2043 p2p_parse_free(&msg); 2044 return; /* not a P2P probe */ 2045 } 2046 2047 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 2048 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 2049 != 0) { 2050 /* The Probe Request is not part of P2P Device Discovery. It is 2051 * not known whether the source address of the frame is the P2P 2052 * Device Address or P2P Interface Address. Do not add a new 2053 * peer entry based on this frames. 2054 */ 2055 p2p_parse_free(&msg); 2056 return; 2057 } 2058 2059 dev = p2p_get_device(p2p, addr); 2060 if (dev) { 2061 if (msg.listen_channel) { 2062 int freq; 2063 2064 if (dev->country[0] == 0) 2065 os_memcpy(dev->country, msg.listen_channel, 3); 2066 2067 freq = p2p_channel_to_freq(msg.listen_channel[3], 2068 msg.listen_channel[4]); 2069 2070 if (freq > 0 && dev->listen_freq != freq) { 2071 p2p_dbg(p2p, 2072 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz", 2073 MAC2STR(addr), dev->listen_freq, freq); 2074 dev->listen_freq = freq; 2075 } 2076 } 2077 2078 os_get_reltime(&dev->last_seen); 2079 p2p_parse_free(&msg); 2080 return; /* already known */ 2081 } 2082 2083 dev = p2p_create_device(p2p, addr); 2084 if (dev == NULL) { 2085 p2p_parse_free(&msg); 2086 return; 2087 } 2088 2089 os_get_reltime(&dev->last_seen); 2090 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 2091 2092 if (msg.listen_channel) { 2093 os_memcpy(dev->country, msg.listen_channel, 3); 2094 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 2095 msg.listen_channel[4]); 2096 } 2097 2098 p2p_copy_wps_info(p2p, dev, 1, &msg); 2099 2100 if (msg.wfd_subelems) { 2101 wpabuf_free(dev->info.wfd_subelems); 2102 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 2103 } 2104 2105 p2p_parse_free(&msg); 2106 2107 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 2108 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 2109 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 2110 dev->info.group_capab, dev->info.device_name, 2111 dev->listen_freq); 2112 } 2113 2114 2115 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 2116 const u8 *addr, 2117 struct p2p_message *msg) 2118 { 2119 struct p2p_device *dev; 2120 2121 dev = p2p_get_device(p2p, addr); 2122 if (dev) { 2123 os_get_reltime(&dev->last_seen); 2124 return dev; /* already known */ 2125 } 2126 2127 dev = p2p_create_device(p2p, addr); 2128 if (dev == NULL) 2129 return NULL; 2130 2131 p2p_add_dev_info(p2p, addr, dev, msg); 2132 2133 return dev; 2134 } 2135 2136 2137 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 2138 { 2139 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 2140 return 1; 2141 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 2142 WPA_GET_BE32(&req_dev_type[2]) == 0 && 2143 WPA_GET_BE16(&req_dev_type[6]) == 0) 2144 return 1; /* Category match with wildcard OUI/sub-category */ 2145 return 0; 2146 } 2147 2148 2149 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 2150 size_t num_req_dev_type) 2151 { 2152 size_t i; 2153 for (i = 0; i < num_req_dev_type; i++) { 2154 if (dev_type_match(dev_type, req_dev_type[i])) 2155 return 1; 2156 } 2157 return 0; 2158 } 2159 2160 2161 /** 2162 * p2p_match_dev_type - Match local device type with requested type 2163 * @p2p: P2P module context from p2p_init() 2164 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 2165 * Returns: 1 on match, 0 on mismatch 2166 * 2167 * This function can be used to match the Requested Device Type attribute in 2168 * WPS IE with the local device types for deciding whether to reply to a Probe 2169 * Request frame. 2170 */ 2171 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 2172 { 2173 struct wps_parse_attr attr; 2174 size_t i; 2175 2176 if (wps_parse_msg(wps, &attr)) 2177 return 1; /* assume no Requested Device Type attributes */ 2178 2179 if (attr.num_req_dev_type == 0) 2180 return 1; /* no Requested Device Type attributes -> match */ 2181 2182 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 2183 attr.num_req_dev_type)) 2184 return 1; /* Own Primary Device Type matches */ 2185 2186 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) { 2187 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 2188 attr.req_dev_type, 2189 attr.num_req_dev_type)) 2190 return 1; /* Own Secondary Device Type matches */ 2191 } 2192 2193 /* No matching device type found */ 2194 return 0; 2195 } 2196 2197 2198 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p, 2199 const u8 *query_hash, 2200 u8 query_count) 2201 { 2202 struct wpabuf *buf; 2203 u8 *len; 2204 int pw_id = -1; 2205 size_t extra = 0; 2206 2207 #ifdef CONFIG_WIFI_DISPLAY 2208 if (p2p->wfd_ie_probe_resp) 2209 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 2210 #endif /* CONFIG_WIFI_DISPLAY */ 2211 2212 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2213 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2214 2215 if (query_count) 2216 extra += MAX_SVC_ADV_IE_LEN; 2217 2218 buf = wpabuf_alloc(1000 + extra); 2219 if (buf == NULL) 2220 return NULL; 2221 2222 if (p2p->go_neg_peer) { 2223 /* Advertise immediate availability of WPS credential */ 2224 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 2225 } 2226 2227 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) { 2228 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response"); 2229 wpabuf_free(buf); 2230 return NULL; 2231 } 2232 2233 #ifdef CONFIG_WIFI_DISPLAY 2234 if (p2p->wfd_ie_probe_resp) 2235 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 2236 #endif /* CONFIG_WIFI_DISPLAY */ 2237 2238 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2239 wpabuf_put_buf(buf, 2240 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2241 2242 /* P2P IE */ 2243 len = p2p_buf_add_ie_hdr(buf); 2244 p2p_buf_add_capability(buf, p2p->dev_capab & 2245 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2246 if (p2p->ext_listen_interval) 2247 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 2248 p2p->ext_listen_interval); 2249 p2p_buf_add_device_info(buf, p2p, NULL); 2250 p2p_buf_update_ie_hdr(buf, len); 2251 2252 if (query_count) { 2253 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash, 2254 p2p->p2ps_adv_list); 2255 } 2256 2257 return buf; 2258 } 2259 2260 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf, 2261 struct wpabuf *ies, 2262 const u8 *addr, int rx_freq) 2263 { 2264 struct ieee80211_mgmt *resp; 2265 u8 channel, op_class; 2266 2267 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt, 2268 u.probe_resp.variable)); 2269 2270 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2271 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2272 os_memcpy(resp->da, addr, ETH_ALEN); 2273 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2274 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2275 resp->u.probe_resp.beacon_int = host_to_le16(100); 2276 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2277 resp->u.probe_resp.capab_info = 2278 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2279 WLAN_CAPABILITY_PRIVACY | 2280 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2281 2282 wpabuf_put_u8(buf, WLAN_EID_SSID); 2283 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2284 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2285 2286 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2287 wpabuf_put_u8(buf, 8); 2288 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2289 wpabuf_put_u8(buf, 90 / 5); 2290 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2291 wpabuf_put_u8(buf, 180 / 5); 2292 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2293 wpabuf_put_u8(buf, 360 / 5); 2294 wpabuf_put_u8(buf, 480 / 5); 2295 wpabuf_put_u8(buf, 540 / 5); 2296 2297 if (!rx_freq) { 2298 channel = p2p->cfg->channel; 2299 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) { 2300 p2p_err(p2p, "Failed to convert freq to channel"); 2301 return -1; 2302 } 2303 2304 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2305 wpabuf_put_u8(buf, 1); 2306 wpabuf_put_u8(buf, channel); 2307 2308 wpabuf_put_buf(buf, ies); 2309 2310 return 0; 2311 } 2312 2313 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash) 2314 { 2315 struct p2ps_advertisement *adv_data; 2316 int any_wfa; 2317 2318 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list); 2319 2320 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */ 2321 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0; 2322 2323 adv_data = p2p->p2ps_adv_list; 2324 while (adv_data) { 2325 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0) 2326 return 1; /* exact hash match */ 2327 if (any_wfa && 2328 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR, 2329 os_strlen(P2PS_WILD_HASH_STR)) == 0) 2330 return 1; /* WFA service match */ 2331 adv_data = adv_data->next; 2332 } 2333 2334 return 0; 2335 } 2336 2337 2338 static enum p2p_probe_req_status 2339 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2340 const u8 *bssid, const u8 *ie, size_t ie_len, 2341 unsigned int rx_freq) 2342 { 2343 struct ieee802_11_elems elems; 2344 struct wpabuf *buf; 2345 struct p2p_message msg; 2346 struct wpabuf *ies; 2347 2348 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2349 ParseFailed) { 2350 /* Ignore invalid Probe Request frames */ 2351 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it"); 2352 return P2P_PREQ_MALFORMED; 2353 } 2354 2355 if (elems.p2p == NULL) { 2356 /* not a P2P probe - ignore it */ 2357 p2p_dbg(p2p, "Not a P2P probe - ignore it"); 2358 return P2P_PREQ_NOT_P2P; 2359 } 2360 2361 if (dst && !is_broadcast_ether_addr(dst) && 2362 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2363 /* Not sent to the broadcast address or our P2P Device Address 2364 */ 2365 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it", 2366 MAC2STR(dst)); 2367 return P2P_PREQ_NOT_PROCESSED; 2368 } 2369 2370 if (bssid && !is_broadcast_ether_addr(bssid)) { 2371 /* Not sent to the Wildcard BSSID */ 2372 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it", 2373 MAC2STR(bssid)); 2374 return P2P_PREQ_NOT_PROCESSED; 2375 } 2376 2377 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2378 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2379 0) { 2380 /* not using P2P Wildcard SSID - ignore */ 2381 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it"); 2382 return P2P_PREQ_NOT_PROCESSED; 2383 } 2384 2385 if (supp_rates_11b_only(&elems)) { 2386 /* Indicates support for 11b rates only */ 2387 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it"); 2388 return P2P_PREQ_NOT_P2P; 2389 } 2390 2391 os_memset(&msg, 0, sizeof(msg)); 2392 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2393 /* Could not parse P2P attributes */ 2394 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it"); 2395 return P2P_PREQ_NOT_P2P; 2396 } 2397 2398 if (msg.service_hash && msg.service_hash_count) { 2399 const u8 *hash = msg.service_hash; 2400 u8 i; 2401 int p2ps_svc_found = 0; 2402 2403 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", 2404 p2p->in_listen, p2p->drv_in_listen, rx_freq, 2405 p2p->cfg->channel, p2p->pending_listen_freq); 2406 2407 if (!p2p->in_listen && !p2p->drv_in_listen && 2408 p2p->pending_listen_freq && rx_freq && 2409 rx_freq != p2p->pending_listen_freq) { 2410 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", 2411 rx_freq, p2p->pending_listen_freq); 2412 p2p_parse_free(&msg); 2413 return P2P_PREQ_NOT_LISTEN; 2414 } 2415 2416 for (i = 0; i < msg.service_hash_count; i++) { 2417 if (p2p_service_find_asp(p2p, hash)) { 2418 p2p_dbg(p2p, "Service Hash match found: " 2419 MACSTR, MAC2STR(hash)); 2420 p2ps_svc_found = 1; 2421 break; 2422 } 2423 hash += P2PS_HASH_LEN; 2424 } 2425 2426 /* Probed hash unknown */ 2427 if (!p2ps_svc_found) { 2428 p2p_dbg(p2p, "No Service Hash match found"); 2429 p2p_parse_free(&msg); 2430 return P2P_PREQ_NOT_PROCESSED; 2431 } 2432 } else { 2433 /* This is not a P2PS Probe Request */ 2434 p2p_dbg(p2p, "No P2PS Hash in Probe Request"); 2435 2436 if (!p2p->in_listen || !p2p->drv_in_listen) { 2437 /* not in Listen state - ignore Probe Request */ 2438 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request", 2439 p2p->in_listen, p2p->drv_in_listen); 2440 p2p_parse_free(&msg); 2441 return P2P_PREQ_NOT_LISTEN; 2442 } 2443 } 2444 2445 if (msg.device_id && 2446 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2447 /* Device ID did not match */ 2448 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it", 2449 MAC2STR(msg.device_id)); 2450 p2p_parse_free(&msg); 2451 return P2P_PREQ_NOT_PROCESSED; 2452 } 2453 2454 /* Check Requested Device Type match */ 2455 if (msg.wps_attributes && 2456 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2457 /* No match with Requested Device Type */ 2458 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it"); 2459 p2p_parse_free(&msg); 2460 return P2P_PREQ_NOT_PROCESSED; 2461 } 2462 2463 if (!p2p->cfg->send_probe_resp) { 2464 /* Response generated elsewhere */ 2465 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response"); 2466 p2p_parse_free(&msg); 2467 return P2P_PREQ_NOT_PROCESSED; 2468 } 2469 2470 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2471 2472 /* 2473 * We do not really have a specific BSS that this frame is advertising, 2474 * so build a frame that has some information in valid format. This is 2475 * really only used for discovery purposes, not to learn exact BSS 2476 * parameters. 2477 */ 2478 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash, 2479 msg.service_hash_count); 2480 p2p_parse_free(&msg); 2481 if (ies == NULL) 2482 return P2P_PREQ_NOT_PROCESSED; 2483 2484 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2485 if (buf == NULL) { 2486 wpabuf_free(ies); 2487 return P2P_PREQ_NOT_PROCESSED; 2488 } 2489 2490 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) { 2491 wpabuf_free(ies); 2492 wpabuf_free(buf); 2493 return P2P_PREQ_NOT_PROCESSED; 2494 } 2495 2496 wpabuf_free(ies); 2497 2498 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq); 2499 2500 wpabuf_free(buf); 2501 2502 return P2P_PREQ_PROCESSED; 2503 } 2504 2505 2506 enum p2p_probe_req_status 2507 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2508 const u8 *bssid, const u8 *ie, size_t ie_len, 2509 unsigned int rx_freq, int p2p_lo_started) 2510 { 2511 enum p2p_probe_req_status res; 2512 2513 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2514 2515 if (p2p_lo_started) { 2516 p2p_dbg(p2p, 2517 "Probe Response is offloaded, do not reply Probe Request"); 2518 return P2P_PREQ_PROCESSED; 2519 } 2520 2521 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq); 2522 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED) 2523 return res; 2524 2525 /* 2526 * Activate a pending GO Negotiation/Invite flow if a received Probe 2527 * Request frame is from an expected peer. Some devices may share the 2528 * same address for P2P and non-P2P STA running simultaneously. The 2529 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe() 2530 * return values verified above ensure we are handling a Probe Request 2531 * frame from a P2P peer. 2532 */ 2533 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2534 p2p->go_neg_peer && 2535 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2536 == 0 && 2537 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2538 /* Received a Probe Request from GO Negotiation peer */ 2539 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2540 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2541 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2542 return res; 2543 } 2544 2545 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2546 p2p->invite_peer && 2547 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) && 2548 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2549 == 0) { 2550 /* Received a Probe Request from Invite peer */ 2551 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2552 eloop_cancel_timeout(p2p_invite_start, p2p, NULL); 2553 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2554 return res; 2555 } 2556 2557 return res; 2558 } 2559 2560 2561 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2562 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2563 { 2564 struct wpabuf *tmp; 2565 u8 *lpos; 2566 size_t tmplen; 2567 int res; 2568 u8 group_capab; 2569 struct p2p_message msg; 2570 2571 if (p2p_ie == NULL) 2572 return 0; /* WLAN AP is not a P2P manager */ 2573 2574 os_memset(&msg, 0, sizeof(msg)); 2575 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0) 2576 return 0; 2577 2578 p2p_dbg(p2p, "BSS P2P manageability %s", 2579 msg.manageability ? "enabled" : "disabled"); 2580 2581 if (!msg.manageability) 2582 return 0; 2583 2584 /* 2585 * (Re)Association Request - P2P IE 2586 * P2P Capability attribute (shall be present) 2587 * P2P Interface attribute (present if concurrent device and 2588 * P2P Management is enabled) 2589 */ 2590 tmp = wpabuf_alloc(200); 2591 if (tmp == NULL) 2592 return -1; 2593 2594 lpos = p2p_buf_add_ie_hdr(tmp); 2595 group_capab = 0; 2596 if (p2p->num_groups > 0) { 2597 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2598 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2599 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2600 p2p->cross_connect) 2601 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2602 } 2603 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2604 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2605 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2606 p2p_buf_add_p2p_interface(tmp, p2p); 2607 p2p_buf_update_ie_hdr(tmp, lpos); 2608 2609 tmplen = wpabuf_len(tmp); 2610 if (tmplen > len) 2611 res = -1; 2612 else { 2613 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2614 res = tmplen; 2615 } 2616 wpabuf_free(tmp); 2617 2618 return res; 2619 } 2620 2621 2622 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2623 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2624 { 2625 struct wpabuf *tmp; 2626 u8 *lpos; 2627 struct p2p_device *peer; 2628 size_t tmplen; 2629 int res; 2630 size_t extra = 0; 2631 2632 if (!p2p_group) 2633 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2634 2635 #ifdef CONFIG_WIFI_DISPLAY 2636 if (p2p->wfd_ie_assoc_req) 2637 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2638 #endif /* CONFIG_WIFI_DISPLAY */ 2639 2640 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2641 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2642 2643 /* 2644 * (Re)Association Request - P2P IE 2645 * P2P Capability attribute (shall be present) 2646 * Extended Listen Timing (may be present) 2647 * P2P Device Info attribute (shall be present) 2648 */ 2649 tmp = wpabuf_alloc(200 + extra); 2650 if (tmp == NULL) 2651 return -1; 2652 2653 #ifdef CONFIG_WIFI_DISPLAY 2654 if (p2p->wfd_ie_assoc_req) 2655 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2656 #endif /* CONFIG_WIFI_DISPLAY */ 2657 2658 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2659 wpabuf_put_buf(tmp, 2660 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2661 2662 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2663 2664 lpos = p2p_buf_add_ie_hdr(tmp); 2665 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2666 if (p2p->ext_listen_interval) 2667 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2668 p2p->ext_listen_interval); 2669 p2p_buf_add_device_info(tmp, p2p, peer); 2670 p2p_buf_update_ie_hdr(tmp, lpos); 2671 2672 tmplen = wpabuf_len(tmp); 2673 if (tmplen > len) 2674 res = -1; 2675 else { 2676 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2677 res = tmplen; 2678 } 2679 wpabuf_free(tmp); 2680 2681 return res; 2682 } 2683 2684 2685 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2686 { 2687 struct wpabuf *p2p_ie; 2688 int ret; 2689 2690 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2691 if (p2p_ie == NULL) 2692 return 0; 2693 2694 ret = p2p_attr_text(p2p_ie, buf, end); 2695 wpabuf_free(p2p_ie); 2696 return ret; 2697 } 2698 2699 2700 struct p2ps_advertisement * 2701 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id) 2702 { 2703 struct p2ps_advertisement *adv_data; 2704 2705 if (!p2p) 2706 return NULL; 2707 2708 adv_data = p2p->p2ps_adv_list; 2709 while (adv_data) { 2710 if (adv_data->id == adv_id) 2711 return adv_data; 2712 adv_data = adv_data->next; 2713 } 2714 2715 return NULL; 2716 } 2717 2718 2719 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id) 2720 { 2721 struct p2ps_advertisement *adv_data; 2722 struct p2ps_advertisement **prior; 2723 2724 if (!p2p) 2725 return -1; 2726 2727 adv_data = p2p->p2ps_adv_list; 2728 prior = &p2p->p2ps_adv_list; 2729 while (adv_data) { 2730 if (adv_data->id == adv_id) { 2731 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id); 2732 *prior = adv_data->next; 2733 os_free(adv_data); 2734 return 0; 2735 } 2736 prior = &adv_data->next; 2737 adv_data = adv_data->next; 2738 } 2739 2740 return -1; 2741 } 2742 2743 2744 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id, 2745 const char *adv_str, u8 svc_state, u16 config_methods, 2746 const char *svc_info, const u8 *cpt_priority) 2747 { 2748 struct p2ps_advertisement *adv_data, *tmp, **prev; 2749 u8 buf[P2PS_HASH_LEN]; 2750 size_t adv_data_len, adv_len, info_len = 0; 2751 int i; 2752 2753 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority) 2754 return -1; 2755 2756 if (!(config_methods & p2p->cfg->config_methods)) { 2757 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x", 2758 config_methods, p2p->cfg->config_methods); 2759 return -1; 2760 } 2761 2762 if (!p2ps_gen_hash(p2p, adv_str, buf)) 2763 return -1; 2764 2765 if (svc_info) 2766 info_len = os_strlen(svc_info); 2767 adv_len = os_strlen(adv_str); 2768 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 + 2769 info_len + 1; 2770 2771 adv_data = os_zalloc(adv_data_len); 2772 if (!adv_data) 2773 return -1; 2774 2775 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN); 2776 adv_data->id = adv_id; 2777 adv_data->state = svc_state; 2778 adv_data->config_methods = config_methods & p2p->cfg->config_methods; 2779 adv_data->auto_accept = (u8) auto_accept; 2780 os_memcpy(adv_data->svc_name, adv_str, adv_len); 2781 2782 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) { 2783 adv_data->cpt_priority[i] = cpt_priority[i]; 2784 adv_data->cpt_mask |= cpt_priority[i]; 2785 } 2786 2787 if (svc_info && info_len) { 2788 adv_data->svc_info = &adv_data->svc_name[adv_len + 1]; 2789 os_memcpy(adv_data->svc_info, svc_info, info_len); 2790 } 2791 2792 /* 2793 * Group Advertisements by service string. They do not need to be 2794 * sorted, but groups allow easier Probe Response instance grouping 2795 */ 2796 tmp = p2p->p2ps_adv_list; 2797 prev = &p2p->p2ps_adv_list; 2798 while (tmp) { 2799 if (tmp->id == adv_data->id) { 2800 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) { 2801 os_free(adv_data); 2802 return -1; 2803 } 2804 adv_data->next = tmp->next; 2805 *prev = adv_data; 2806 os_free(tmp); 2807 goto inserted; 2808 } else { 2809 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) { 2810 adv_data->next = tmp->next; 2811 tmp->next = adv_data; 2812 goto inserted; 2813 } 2814 } 2815 prev = &tmp->next; 2816 tmp = tmp->next; 2817 } 2818 2819 /* No svc_name match found */ 2820 adv_data->next = p2p->p2ps_adv_list; 2821 p2p->p2ps_adv_list = adv_data; 2822 2823 inserted: 2824 p2p_dbg(p2p, 2825 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x", 2826 adv_id, adv_data->config_methods, svc_state, adv_str, 2827 adv_data->cpt_mask); 2828 2829 return 0; 2830 } 2831 2832 2833 void p2p_service_flush_asp(struct p2p_data *p2p) 2834 { 2835 struct p2ps_advertisement *adv, *prev; 2836 2837 if (!p2p) 2838 return; 2839 2840 adv = p2p->p2ps_adv_list; 2841 while (adv) { 2842 prev = adv; 2843 adv = adv->next; 2844 os_free(prev); 2845 } 2846 2847 p2p->p2ps_adv_list = NULL; 2848 p2ps_prov_free(p2p); 2849 p2p_dbg(p2p, "All ASP advertisements flushed"); 2850 } 2851 2852 2853 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2854 { 2855 struct p2p_message msg; 2856 2857 os_memset(&msg, 0, sizeof(msg)); 2858 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2859 return -1; 2860 2861 if (msg.p2p_device_addr) { 2862 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2863 return 0; 2864 } else if (msg.device_id) { 2865 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2866 return 0; 2867 } 2868 return -1; 2869 } 2870 2871 2872 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2873 { 2874 struct wpabuf *p2p_ie; 2875 int ret; 2876 2877 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2878 P2P_IE_VENDOR_TYPE); 2879 if (p2p_ie == NULL) 2880 return -1; 2881 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2882 wpabuf_free(p2p_ie); 2883 return ret; 2884 } 2885 2886 2887 static void p2p_clear_go_neg(struct p2p_data *p2p) 2888 { 2889 p2p->go_neg_peer = NULL; 2890 p2p_clear_timeout(p2p); 2891 p2p_set_state(p2p, P2P_IDLE); 2892 } 2893 2894 2895 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2896 { 2897 if (p2p->go_neg_peer == NULL) { 2898 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2899 return; /* No pending Group Formation */ 2900 } 2901 2902 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2903 0) { 2904 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2905 MACSTR " (GO Negotiation peer " MACSTR ")", 2906 MAC2STR(mac_addr), 2907 MAC2STR(p2p->go_neg_peer->intended_addr)); 2908 return; /* Ignore unexpected peer address */ 2909 } 2910 2911 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2912 MAC2STR(mac_addr)); 2913 2914 p2p_clear_go_neg(p2p); 2915 } 2916 2917 2918 void p2p_group_formation_failed(struct p2p_data *p2p) 2919 { 2920 if (p2p->go_neg_peer == NULL) { 2921 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2922 return; /* No pending Group Formation */ 2923 } 2924 2925 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2926 MAC2STR(p2p->go_neg_peer->intended_addr)); 2927 2928 p2p_clear_go_neg(p2p); 2929 } 2930 2931 2932 bool is_p2p_6ghz_disabled(struct p2p_data *p2p) 2933 { 2934 if (p2p) 2935 return p2p->cfg->p2p_6ghz_disable; 2936 return false; 2937 } 2938 2939 2940 struct p2p_data * p2p_init(const struct p2p_config *cfg) 2941 { 2942 struct p2p_data *p2p; 2943 2944 if (cfg->max_peers < 1 || 2945 cfg->passphrase_len < 8 || cfg->passphrase_len > 63) 2946 return NULL; 2947 2948 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2949 if (p2p == NULL) 2950 return NULL; 2951 p2p->cfg = (struct p2p_config *) (p2p + 1); 2952 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2953 if (cfg->dev_name) 2954 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2955 if (cfg->manufacturer) 2956 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2957 if (cfg->model_name) 2958 p2p->cfg->model_name = os_strdup(cfg->model_name); 2959 if (cfg->model_number) 2960 p2p->cfg->model_number = os_strdup(cfg->model_number); 2961 if (cfg->serial_number) 2962 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2963 if (cfg->pref_chan) { 2964 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2965 sizeof(struct p2p_channel)); 2966 if (p2p->cfg->pref_chan) { 2967 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2968 cfg->num_pref_chan * 2969 sizeof(struct p2p_channel)); 2970 } else 2971 p2p->cfg->num_pref_chan = 0; 2972 } 2973 2974 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash); 2975 2976 p2p->min_disc_int = 1; 2977 p2p->max_disc_int = 3; 2978 p2p->max_disc_tu = -1; 2979 2980 if (os_get_random(&p2p->next_tie_breaker, 1) < 0) 2981 p2p->next_tie_breaker = 0; 2982 p2p->next_tie_breaker &= 0x01; 2983 if (cfg->sd_request) 2984 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2985 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2986 if (cfg->concurrent_operations) 2987 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2988 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2989 2990 dl_list_init(&p2p->devices); 2991 2992 p2p->go_timeout = 100; 2993 p2p->client_timeout = 20; 2994 p2p->num_p2p_sd_queries = 0; 2995 2996 p2p_dbg(p2p, "initialized"); 2997 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 2998 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 2999 3000 return p2p; 3001 } 3002 3003 3004 void p2p_deinit(struct p2p_data *p2p) 3005 { 3006 #ifdef CONFIG_WIFI_DISPLAY 3007 wpabuf_free(p2p->wfd_ie_beacon); 3008 wpabuf_free(p2p->wfd_ie_probe_req); 3009 wpabuf_free(p2p->wfd_ie_probe_resp); 3010 wpabuf_free(p2p->wfd_ie_assoc_req); 3011 wpabuf_free(p2p->wfd_ie_invitation); 3012 wpabuf_free(p2p->wfd_ie_prov_disc_req); 3013 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 3014 wpabuf_free(p2p->wfd_ie_go_neg); 3015 wpabuf_free(p2p->wfd_dev_info); 3016 wpabuf_free(p2p->wfd_assoc_bssid); 3017 wpabuf_free(p2p->wfd_coupled_sink_info); 3018 wpabuf_free(p2p->wfd_r2_dev_info); 3019 #endif /* CONFIG_WIFI_DISPLAY */ 3020 3021 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3022 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 3023 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3024 p2p_flush(p2p); 3025 p2p_free_req_dev_types(p2p); 3026 os_free(p2p->cfg->dev_name); 3027 os_free(p2p->cfg->manufacturer); 3028 os_free(p2p->cfg->model_name); 3029 os_free(p2p->cfg->model_number); 3030 os_free(p2p->cfg->serial_number); 3031 os_free(p2p->cfg->pref_chan); 3032 os_free(p2p->groups); 3033 p2ps_prov_free(p2p); 3034 wpabuf_free(p2p->sd_resp); 3035 p2p_remove_wps_vendor_extensions(p2p); 3036 os_free(p2p->no_go_freq.range); 3037 p2p_service_flush_asp(p2p); 3038 3039 os_free(p2p); 3040 } 3041 3042 3043 void p2p_flush(struct p2p_data *p2p) 3044 { 3045 struct p2p_device *dev, *prev; 3046 3047 p2p_ext_listen(p2p, 0, 0); 3048 p2p_stop_find(p2p); 3049 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 3050 list) { 3051 dl_list_del(&dev->list); 3052 p2p_device_free(p2p, dev); 3053 } 3054 p2p_free_sd_queries(p2p); 3055 p2p->ssid_set = 0; 3056 p2ps_prov_free(p2p); 3057 p2p_reset_pending_pd(p2p); 3058 p2p->override_pref_op_class = 0; 3059 p2p->override_pref_channel = 0; 3060 } 3061 3062 3063 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 3064 { 3065 struct p2p_device *dev; 3066 3067 dev = p2p_get_device(p2p, addr); 3068 if (dev == NULL) 3069 return -1; 3070 3071 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 3072 3073 if (p2p->go_neg_peer == dev) { 3074 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3075 p2p->go_neg_peer = NULL; 3076 } 3077 3078 dev->wps_method = WPS_NOT_READY; 3079 dev->oob_pw_id = 0; 3080 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 3081 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 3082 3083 return 0; 3084 } 3085 3086 3087 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 3088 { 3089 os_free(p2p->cfg->dev_name); 3090 if (dev_name) { 3091 p2p->cfg->dev_name = os_strdup(dev_name); 3092 if (p2p->cfg->dev_name == NULL) 3093 return -1; 3094 } else 3095 p2p->cfg->dev_name = NULL; 3096 return 0; 3097 } 3098 3099 3100 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 3101 { 3102 os_free(p2p->cfg->manufacturer); 3103 p2p->cfg->manufacturer = NULL; 3104 if (manufacturer) { 3105 p2p->cfg->manufacturer = os_strdup(manufacturer); 3106 if (p2p->cfg->manufacturer == NULL) 3107 return -1; 3108 } 3109 3110 return 0; 3111 } 3112 3113 3114 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 3115 { 3116 os_free(p2p->cfg->model_name); 3117 p2p->cfg->model_name = NULL; 3118 if (model_name) { 3119 p2p->cfg->model_name = os_strdup(model_name); 3120 if (p2p->cfg->model_name == NULL) 3121 return -1; 3122 } 3123 3124 return 0; 3125 } 3126 3127 3128 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 3129 { 3130 os_free(p2p->cfg->model_number); 3131 p2p->cfg->model_number = NULL; 3132 if (model_number) { 3133 p2p->cfg->model_number = os_strdup(model_number); 3134 if (p2p->cfg->model_number == NULL) 3135 return -1; 3136 } 3137 3138 return 0; 3139 } 3140 3141 3142 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 3143 { 3144 os_free(p2p->cfg->serial_number); 3145 p2p->cfg->serial_number = NULL; 3146 if (serial_number) { 3147 p2p->cfg->serial_number = os_strdup(serial_number); 3148 if (p2p->cfg->serial_number == NULL) 3149 return -1; 3150 } 3151 3152 return 0; 3153 } 3154 3155 3156 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 3157 { 3158 p2p->cfg->config_methods = config_methods; 3159 } 3160 3161 3162 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 3163 { 3164 os_memcpy(p2p->cfg->uuid, uuid, 16); 3165 } 3166 3167 3168 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 3169 { 3170 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 3171 return 0; 3172 } 3173 3174 3175 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 3176 size_t num_dev_types) 3177 { 3178 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 3179 num_dev_types = P2P_SEC_DEVICE_TYPES; 3180 p2p->cfg->num_sec_dev_types = num_dev_types; 3181 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 3182 return 0; 3183 } 3184 3185 3186 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 3187 { 3188 int i; 3189 3190 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3191 wpabuf_free(p2p->wps_vendor_ext[i]); 3192 p2p->wps_vendor_ext[i] = NULL; 3193 } 3194 } 3195 3196 3197 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 3198 const struct wpabuf *vendor_ext) 3199 { 3200 int i; 3201 3202 if (vendor_ext == NULL) 3203 return -1; 3204 3205 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3206 if (p2p->wps_vendor_ext[i] == NULL) 3207 break; 3208 } 3209 if (i >= P2P_MAX_WPS_VENDOR_EXT) 3210 return -1; 3211 3212 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 3213 if (p2p->wps_vendor_ext[i] == NULL) 3214 return -1; 3215 3216 return 0; 3217 } 3218 3219 3220 int p2p_set_country(struct p2p_data *p2p, const char *country) 3221 { 3222 os_memcpy(p2p->cfg->country, country, 3); 3223 return 0; 3224 } 3225 3226 3227 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev) 3228 { 3229 int res; 3230 3231 if (dev->sd_pending_bcast_queries == 0) { 3232 /* Initialize with total number of registered broadcast 3233 * SD queries. */ 3234 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries; 3235 } 3236 3237 res = p2p_start_sd(p2p, dev); 3238 if (res == -2) 3239 return -2; 3240 if (res == 0) 3241 return 1; 3242 3243 if (dev->req_config_methods && 3244 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 3245 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3246 MACSTR " (config methods 0x%x)", 3247 MAC2STR(dev->info.p2p_device_addr), 3248 dev->req_config_methods); 3249 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 3250 return 1; 3251 } 3252 3253 return 0; 3254 } 3255 3256 3257 void p2p_continue_find(struct p2p_data *p2p) 3258 { 3259 struct p2p_device *dev; 3260 int found, res; 3261 3262 p2p_set_state(p2p, P2P_SEARCH); 3263 3264 /* Continue from the device following the last iteration */ 3265 found = 0; 3266 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3267 if (dev == p2p->last_p2p_find_oper) { 3268 found = 1; 3269 continue; 3270 } 3271 if (!found) 3272 continue; 3273 res = p2p_pre_find_operation(p2p, dev); 3274 if (res > 0) { 3275 p2p->last_p2p_find_oper = dev; 3276 return; 3277 } 3278 if (res == -2) 3279 goto skip_sd; 3280 } 3281 3282 /* 3283 * Wrap around to the beginning of the list and continue until the last 3284 * iteration device. 3285 */ 3286 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3287 res = p2p_pre_find_operation(p2p, dev); 3288 if (res > 0) { 3289 p2p->last_p2p_find_oper = dev; 3290 return; 3291 } 3292 if (res == -2) 3293 goto skip_sd; 3294 if (dev == p2p->last_p2p_find_oper) 3295 break; 3296 } 3297 3298 skip_sd: 3299 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN); 3300 p2p_listen_in_find(p2p, 1); 3301 } 3302 3303 3304 static void p2p_sd_cb(struct p2p_data *p2p, int success) 3305 { 3306 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 3307 success); 3308 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3309 3310 if (!success) { 3311 if (p2p->sd_peer) { 3312 if (is_zero_ether_addr(p2p->sd_query_no_ack)) { 3313 os_memcpy(p2p->sd_query_no_ack, 3314 p2p->sd_peer->info.p2p_device_addr, 3315 ETH_ALEN); 3316 p2p_dbg(p2p, 3317 "First SD Query no-ACK in this search iteration: " 3318 MACSTR, MAC2STR(p2p->sd_query_no_ack)); 3319 } 3320 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3321 } 3322 p2p->sd_peer = NULL; 3323 if (p2p->state != P2P_IDLE) 3324 p2p_continue_find(p2p); 3325 return; 3326 } 3327 3328 if (p2p->sd_peer == NULL) { 3329 p2p_dbg(p2p, "No SD peer entry known"); 3330 if (p2p->state != P2P_IDLE) 3331 p2p_continue_find(p2p); 3332 return; 3333 } 3334 3335 if (p2p->sd_query && p2p->sd_query->for_all_peers) { 3336 /* Update the pending broadcast SD query count for this device 3337 */ 3338 p2p->sd_peer->sd_pending_bcast_queries--; 3339 3340 /* 3341 * If there are no pending broadcast queries for this device, 3342 * mark it as done (-1). 3343 */ 3344 if (p2p->sd_peer->sd_pending_bcast_queries == 0) 3345 p2p->sd_peer->sd_pending_bcast_queries = -1; 3346 } 3347 3348 /* Wait for response from the peer */ 3349 p2p_set_state(p2p, P2P_SD_DURING_FIND); 3350 p2p_set_timeout(p2p, 0, 200000); 3351 } 3352 3353 3354 /** 3355 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 3356 * @p2p: P2P module context from p2p_init() 3357 */ 3358 static void p2p_retry_pd(struct p2p_data *p2p) 3359 { 3360 struct p2p_device *dev; 3361 3362 /* 3363 * Retry the prov disc req attempt only for the peer that the user had 3364 * requested. 3365 */ 3366 3367 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3368 if (os_memcmp(p2p->pending_pd_devaddr, 3369 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3370 continue; 3371 if (!dev->req_config_methods) 3372 continue; 3373 3374 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3375 MACSTR " (config methods 0x%x)", 3376 MAC2STR(dev->info.p2p_device_addr), 3377 dev->req_config_methods); 3378 p2p_send_prov_disc_req(p2p, dev, 3379 dev->flags & P2P_DEV_PD_FOR_JOIN, 3380 p2p->pd_force_freq); 3381 return; 3382 } 3383 } 3384 3385 3386 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 3387 { 3388 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 3389 success); 3390 3391 /* 3392 * Postpone resetting the pending action state till after we actually 3393 * time out. This allows us to take some action like notifying any 3394 * interested parties about no response to the request. 3395 * 3396 * When the timer (below) goes off we check in IDLE, SEARCH, or 3397 * LISTEN_ONLY state, which are the only allowed states to issue a PD 3398 * requests in, if this was still pending and then raise notification. 3399 */ 3400 3401 if (!success) { 3402 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3403 3404 if (p2p->user_initiated_pd && 3405 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 3406 { 3407 /* Retry request from timeout to avoid busy loops */ 3408 p2p->pending_action_state = P2P_PENDING_PD; 3409 p2p_set_timeout(p2p, 0, 50000); 3410 } else if (p2p->state != P2P_IDLE) 3411 p2p_continue_find(p2p); 3412 else if (p2p->user_initiated_pd) { 3413 p2p->pending_action_state = P2P_PENDING_PD; 3414 p2p_set_timeout(p2p, 0, 300000); 3415 } 3416 return; 3417 } 3418 3419 /* 3420 * If after PD Request the peer doesn't expect to receive PD Response 3421 * the PD Request ACK indicates a completion of the current PD. This 3422 * happens only on the advertiser side sending the follow-on PD Request 3423 * with the status different than 12 (Success: accepted by user). 3424 */ 3425 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker && 3426 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) { 3427 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK"); 3428 3429 if (p2p->send_action_in_progress) { 3430 p2p->send_action_in_progress = 0; 3431 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3432 } 3433 3434 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3435 3436 if (p2p->cfg->p2ps_prov_complete) { 3437 p2p->cfg->p2ps_prov_complete( 3438 p2p->cfg->cb_ctx, 3439 p2p->p2ps_prov->status, 3440 p2p->p2ps_prov->adv_mac, 3441 p2p->p2ps_prov->adv_mac, 3442 p2p->p2ps_prov->session_mac, 3443 NULL, p2p->p2ps_prov->adv_id, 3444 p2p->p2ps_prov->session_id, 3445 0, 0, NULL, 0, 0, 0, 3446 NULL, NULL, 0, 0, NULL, 0); 3447 } 3448 3449 if (p2p->user_initiated_pd) 3450 p2p_reset_pending_pd(p2p); 3451 3452 p2ps_prov_free(p2p); 3453 return; 3454 } 3455 3456 /* 3457 * This postponing, of resetting pending_action_state, needs to be 3458 * done only for user initiated PD requests and not internal ones. 3459 */ 3460 if (p2p->user_initiated_pd) 3461 p2p->pending_action_state = P2P_PENDING_PD; 3462 else 3463 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3464 3465 /* Wait for response from the peer */ 3466 if (p2p->state == P2P_SEARCH) 3467 p2p_set_state(p2p, P2P_PD_DURING_FIND); 3468 p2p_set_timeout(p2p, 0, 200000); 3469 } 3470 3471 3472 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success) 3473 { 3474 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d", 3475 success); 3476 3477 if (p2p->send_action_in_progress) { 3478 p2p->send_action_in_progress = 0; 3479 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3480 } 3481 3482 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3483 3484 if (!success) { 3485 if (p2p->state == P2P_SEARCH) 3486 p2p_continue_find(p2p); 3487 return; 3488 } 3489 3490 if (!p2p->cfg->prov_disc_resp_cb || 3491 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1) { 3492 if (p2p->state == P2P_SEARCH) 3493 p2p_continue_find(p2p); 3494 return; 3495 } 3496 3497 p2p_dbg(p2p, 3498 "Post-Provision Discovery operations started - do not try to continue other P2P operations"); 3499 } 3500 3501 3502 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 3503 struct os_reltime *rx_time, int level, const u8 *ies, 3504 size_t ies_len) 3505 { 3506 if (os_reltime_before(rx_time, &p2p->find_start)) { 3507 /* 3508 * The driver may have cached (e.g., in cfg80211 BSS table) the 3509 * scan results for relatively long time. To avoid reporting 3510 * stale information, update P2P peers only based on results 3511 * that have based on frames received after the last p2p_find 3512 * operation was started. 3513 */ 3514 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 3515 " (rx_time=%u.%06u find_start=%u.%06u)", 3516 MAC2STR(bssid), (unsigned int) rx_time->sec, 3517 (unsigned int) rx_time->usec, 3518 (unsigned int) p2p->find_start.sec, 3519 (unsigned int) p2p->find_start.usec); 3520 return 0; 3521 } 3522 3523 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 3524 3525 return 0; 3526 } 3527 3528 3529 void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay) 3530 { 3531 if (!p2p->p2p_scan_running) { 3532 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 3533 } 3534 p2p->p2p_scan_running = 0; 3535 3536 /* Use this delay only when p2p_find doesn't set it */ 3537 if (!p2p->search_delay) 3538 p2p->search_delay = delay; 3539 3540 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3541 3542 if (p2p_run_after_scan(p2p)) 3543 return; 3544 if (p2p->state == P2P_SEARCH) 3545 p2p_continue_find(p2p); 3546 } 3547 3548 3549 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id, 3550 unsigned int bands) 3551 { 3552 u8 dev_capab; 3553 u8 *len; 3554 3555 #ifdef CONFIG_WIFI_DISPLAY 3556 if (p2p->wfd_ie_probe_req) 3557 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 3558 #endif /* CONFIG_WIFI_DISPLAY */ 3559 3560 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3561 wpabuf_put_buf(ies, 3562 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3563 3564 len = p2p_buf_add_ie_hdr(ies); 3565 3566 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3567 3568 /* P2PS requires Probe Request frames to include SD bit */ 3569 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3570 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 3571 3572 p2p_buf_add_capability(ies, dev_capab, 0); 3573 3574 if (dev_id) 3575 p2p_buf_add_device_id(ies, dev_id); 3576 if (p2p->cfg->reg_class && p2p->cfg->channel) 3577 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 3578 p2p->cfg->reg_class, 3579 p2p->cfg->channel); 3580 if (p2p->ext_listen_interval) 3581 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 3582 p2p->ext_listen_interval); 3583 3584 if (bands & BAND_60_GHZ) 3585 p2p_buf_add_device_info(ies, p2p, NULL); 3586 3587 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3588 p2p_buf_add_service_hash(ies, p2p); 3589 3590 /* TODO: p2p_buf_add_operating_channel() if GO */ 3591 p2p_buf_update_ie_hdr(ies, len); 3592 } 3593 3594 3595 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 3596 { 3597 size_t len = 100; 3598 3599 #ifdef CONFIG_WIFI_DISPLAY 3600 if (p2p && p2p->wfd_ie_probe_req) 3601 len += wpabuf_len(p2p->wfd_ie_probe_req); 3602 #endif /* CONFIG_WIFI_DISPLAY */ 3603 3604 if (p2p && p2p->vendor_elem && 3605 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3606 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3607 3608 return len; 3609 } 3610 3611 3612 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 3613 { 3614 return p2p_attr_text(p2p_ie, buf, end); 3615 } 3616 3617 3618 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 3619 { 3620 struct p2p_device *dev = p2p->go_neg_peer; 3621 int timeout; 3622 3623 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 3624 3625 if (dev == NULL) { 3626 p2p_dbg(p2p, "No pending GO Negotiation"); 3627 return; 3628 } 3629 3630 if (success) { 3631 if (dev->flags & P2P_DEV_USER_REJECTED) { 3632 p2p_set_state(p2p, P2P_IDLE); 3633 return; 3634 } 3635 } else if (dev->go_neg_req_sent) { 3636 /* Cancel the increment from p2p_connect_send() on failure */ 3637 dev->go_neg_req_sent--; 3638 } 3639 3640 if (!success && 3641 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 3642 !is_zero_ether_addr(dev->member_in_go_dev)) { 3643 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 3644 MAC2STR(dev->info.p2p_device_addr)); 3645 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3646 p2p_send_dev_disc_req(p2p, dev); 3647 return; 3648 } 3649 3650 /* 3651 * Use P2P find, if needed, to find the other device from its listen 3652 * channel. 3653 */ 3654 p2p_set_state(p2p, P2P_CONNECT); 3655 timeout = success ? 500000 : 100000; 3656 if (!success && p2p->go_neg_peer && 3657 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 3658 unsigned int r; 3659 /* 3660 * Peer is expected to wait our response and we will skip the 3661 * listen phase. Add some randomness to the wait time here to 3662 * make it less likely to hit cases where we could end up in 3663 * sync with peer not listening. 3664 */ 3665 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 3666 r = 0; 3667 timeout += r % 100000; 3668 } 3669 p2p_set_timeout(p2p, 0, timeout); 3670 } 3671 3672 3673 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 3674 { 3675 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 3676 success); 3677 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 3678 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 3679 return; 3680 } 3681 p2p_set_state(p2p, P2P_CONNECT); 3682 p2p_set_timeout(p2p, 0, 500000); 3683 } 3684 3685 3686 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 3687 const u8 *addr) 3688 { 3689 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 3690 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 3691 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status); 3692 return; 3693 } 3694 3695 if (success) { 3696 struct p2p_device *dev; 3697 dev = p2p_get_device(p2p, addr); 3698 if (dev && 3699 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 3700 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 3701 } 3702 3703 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND) 3704 p2p_continue_find(p2p); 3705 } 3706 3707 3708 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3709 enum p2p_send_action_result result) 3710 { 3711 struct p2p_device *dev; 3712 3713 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 3714 if (result == P2P_SEND_ACTION_FAILED) { 3715 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3716 p2p_go_neg_failed(p2p, -1); 3717 return; 3718 } 3719 3720 dev = p2p->go_neg_peer; 3721 3722 if (result == P2P_SEND_ACTION_NO_ACK) { 3723 /* 3724 * Retry GO Negotiation Confirmation 3725 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive 3726 * ACK for confirmation. 3727 */ 3728 if (dev && dev->go_neg_conf && 3729 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) { 3730 p2p_dbg(p2p, "GO Negotiation Confirm retry %d", 3731 dev->go_neg_conf_sent); 3732 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 3733 if (p2p_send_action(p2p, dev->go_neg_conf_freq, 3734 dev->info.p2p_device_addr, 3735 p2p->cfg->dev_addr, 3736 dev->info.p2p_device_addr, 3737 wpabuf_head(dev->go_neg_conf), 3738 wpabuf_len(dev->go_neg_conf), 0) >= 3739 0) { 3740 dev->go_neg_conf_sent++; 3741 return; 3742 } 3743 p2p_dbg(p2p, "Failed to re-send Action frame"); 3744 3745 /* 3746 * Continue with the assumption that the first attempt 3747 * went through and just the ACK frame was lost. 3748 */ 3749 } 3750 3751 /* 3752 * It looks like the TX status for GO Negotiation Confirm is 3753 * often showing failure even when the peer has actually 3754 * received the frame. Since the peer may change channels 3755 * immediately after having received the frame, we may not see 3756 * an Ack for retries, so just dropping a single frame may 3757 * trigger this. To allow the group formation to succeed if the 3758 * peer did indeed receive the frame, continue regardless of 3759 * the TX status. 3760 */ 3761 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 3762 } 3763 3764 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3765 3766 if (dev == NULL) 3767 return; 3768 3769 p2p_go_complete(p2p, dev); 3770 } 3771 3772 3773 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3774 const u8 *src, const u8 *bssid, 3775 enum p2p_send_action_result result) 3776 { 3777 enum p2p_pending_action_state state; 3778 int success; 3779 3780 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 3781 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)", 3782 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3783 MAC2STR(bssid), result, p2p_state_txt(p2p->state)); 3784 success = result == P2P_SEND_ACTION_SUCCESS; 3785 state = p2p->pending_action_state; 3786 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3787 switch (state) { 3788 case P2P_NO_PENDING_ACTION: 3789 if (p2p->send_action_in_progress) { 3790 p2p->send_action_in_progress = 0; 3791 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3792 } 3793 break; 3794 case P2P_PENDING_GO_NEG_REQUEST: 3795 p2p_go_neg_req_cb(p2p, success); 3796 break; 3797 case P2P_PENDING_GO_NEG_RESPONSE: 3798 p2p_go_neg_resp_cb(p2p, success); 3799 break; 3800 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3801 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3802 break; 3803 case P2P_PENDING_GO_NEG_CONFIRM: 3804 p2p_go_neg_conf_cb(p2p, result); 3805 break; 3806 case P2P_PENDING_SD: 3807 p2p_sd_cb(p2p, success); 3808 break; 3809 case P2P_PENDING_PD: 3810 p2p_prov_disc_cb(p2p, success); 3811 break; 3812 case P2P_PENDING_PD_RESPONSE: 3813 p2p_prov_disc_resp_cb(p2p, success); 3814 break; 3815 case P2P_PENDING_INVITATION_REQUEST: 3816 p2p_invitation_req_cb(p2p, success); 3817 break; 3818 case P2P_PENDING_INVITATION_RESPONSE: 3819 p2p_invitation_resp_cb(p2p, success); 3820 break; 3821 case P2P_PENDING_DEV_DISC_REQUEST: 3822 p2p_dev_disc_req_cb(p2p, success); 3823 break; 3824 case P2P_PENDING_DEV_DISC_RESPONSE: 3825 p2p_dev_disc_resp_cb(p2p, success); 3826 break; 3827 case P2P_PENDING_GO_DISC_REQ: 3828 p2p_go_disc_req_cb(p2p, success); 3829 break; 3830 } 3831 } 3832 3833 3834 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3835 unsigned int duration) 3836 { 3837 if (freq == p2p->pending_client_disc_freq) { 3838 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3839 p2p->pending_client_disc_freq = 0; 3840 return; 3841 } 3842 3843 if (freq != p2p->pending_listen_freq) { 3844 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3845 freq, duration, p2p->pending_listen_freq); 3846 return; 3847 } 3848 3849 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3850 p2p->pending_listen_sec, p2p->pending_listen_usec, 3851 p2p->pending_listen_freq); 3852 p2p->in_listen = 1; 3853 p2p->drv_in_listen = freq; 3854 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3855 /* 3856 * Add 20 msec extra wait to avoid race condition with driver 3857 * remain-on-channel end event, i.e., give driver more time to 3858 * complete the operation before our timeout expires. 3859 */ 3860 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3861 p2p->pending_listen_usec + 20000); 3862 } 3863 3864 p2p->pending_listen_freq = 0; 3865 } 3866 3867 3868 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3869 { 3870 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3871 p2p->drv_in_listen = 0; 3872 if (p2p->in_listen) 3873 return 0; /* Internal timeout will trigger the next step */ 3874 3875 if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer && 3876 p2p->pending_listen_freq) { 3877 /* 3878 * Better wait a bit if the driver is unable to start 3879 * offchannel operation for some reason to continue with 3880 * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions. 3881 */ 3882 p2p_dbg(p2p, 3883 "Listen operation did not seem to start - delay idle phase to avoid busy loop"); 3884 p2p_set_timeout(p2p, 0, 100000); 3885 return 1; 3886 } 3887 3888 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3889 if (p2p->go_neg_peer->connect_reqs >= 120) { 3890 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3891 p2p_go_neg_failed(p2p, -1); 3892 return 0; 3893 } 3894 3895 p2p_set_state(p2p, P2P_CONNECT); 3896 p2p_connect_send(p2p, p2p->go_neg_peer); 3897 return 1; 3898 } else if (p2p->state == P2P_SEARCH) { 3899 if (p2p->p2p_scan_running) { 3900 /* 3901 * Search is already in progress. This can happen if 3902 * an Action frame RX is reported immediately after 3903 * the end of a remain-on-channel operation and the 3904 * response frame to that is sent using an offchannel 3905 * operation while in p2p_find. Avoid an attempt to 3906 * restart a scan here. 3907 */ 3908 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3909 return 1; 3910 } 3911 if (p2p->pending_listen_freq) { 3912 /* 3913 * Better wait a bit if the driver is unable to start 3914 * offchannel operation for some reason. p2p_search() 3915 * will be started from internal timeout. 3916 */ 3917 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3918 p2p_set_timeout(p2p, 0, 100000); 3919 return 1; 3920 } 3921 if (p2p->search_delay) { 3922 p2p_dbg(p2p, "Delay search operation by %u ms", 3923 p2p->search_delay); 3924 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3925 (p2p->search_delay % 1000) * 1000); 3926 return 1; 3927 } 3928 p2p_search(p2p); 3929 return 1; 3930 } 3931 3932 return 0; 3933 } 3934 3935 3936 static void p2p_timeout_connect(struct p2p_data *p2p) 3937 { 3938 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3939 if (p2p->go_neg_peer && 3940 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3941 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3942 p2p_go_neg_failed(p2p, -1); 3943 return; 3944 } 3945 if (p2p->go_neg_peer && 3946 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3947 p2p->go_neg_peer->connect_reqs < 120) { 3948 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3949 p2p_connect_send(p2p, p2p->go_neg_peer); 3950 return; 3951 } 3952 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) { 3953 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)"); 3954 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3955 p2p_set_timeout(p2p, 0, 30000); 3956 return; 3957 } 3958 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3959 p2p_listen_in_find(p2p, 0); 3960 } 3961 3962 3963 static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3964 { 3965 if (p2p->go_neg_peer) { 3966 if (p2p->drv_in_listen) { 3967 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3968 return; 3969 } 3970 3971 if (p2p->go_neg_peer->connect_reqs >= 120) { 3972 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3973 p2p_go_neg_failed(p2p, -1); 3974 return; 3975 } 3976 3977 p2p_set_state(p2p, P2P_CONNECT); 3978 p2p_connect_send(p2p, p2p->go_neg_peer); 3979 } else 3980 p2p_set_state(p2p, P2P_IDLE); 3981 } 3982 3983 3984 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3985 { 3986 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3987 3988 if (p2p->cfg->is_concurrent_session_active && 3989 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx)) 3990 p2p_set_timeout(p2p, 0, 500000); 3991 else 3992 p2p_set_timeout(p2p, 0, 200000); 3993 } 3994 3995 3996 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3997 { 3998 struct p2p_device *dev = p2p->go_neg_peer; 3999 4000 if (dev == NULL) { 4001 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 4002 return; 4003 } 4004 4005 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 4006 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 4007 if (p2p->pending_listen_freq) { 4008 p2p_dbg(p2p, "Clear pending_listen_freq for %s", __func__); 4009 p2p->pending_listen_freq = 0; 4010 } 4011 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 4012 p2p_listen_in_find(p2p, 0); 4013 } 4014 4015 4016 static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 4017 { 4018 p2p_dbg(p2p, "Service Discovery Query timeout"); 4019 if (p2p->sd_peer) { 4020 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4021 p2p->sd_peer = NULL; 4022 } 4023 p2p_continue_find(p2p); 4024 } 4025 4026 4027 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 4028 { 4029 p2p_dbg(p2p, "Provision Discovery Request timeout"); 4030 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4031 p2p_continue_find(p2p); 4032 } 4033 4034 4035 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 4036 { 4037 u32 adv_id = 0; 4038 u8 *adv_mac = NULL; 4039 4040 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4041 4042 /* 4043 * For user initiated PD requests that we have not gotten any responses 4044 * for while in IDLE state, we retry them a couple of times before 4045 * giving up. 4046 */ 4047 if (!p2p->user_initiated_pd) 4048 return; 4049 4050 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 4051 4052 if (p2p->pd_retries) { 4053 p2p->pd_retries--; 4054 p2p_retry_pd(p2p); 4055 } else { 4056 struct p2p_device *dev; 4057 int for_join = 0; 4058 4059 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 4060 if (os_memcmp(p2p->pending_pd_devaddr, 4061 dev->info.p2p_device_addr, ETH_ALEN) != 0) 4062 continue; 4063 if (dev->req_config_methods && 4064 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 4065 for_join = 1; 4066 } 4067 4068 if (p2p->p2ps_prov) { 4069 adv_id = p2p->p2ps_prov->adv_id; 4070 adv_mac = p2p->p2ps_prov->adv_mac; 4071 } 4072 4073 if (p2p->cfg->prov_disc_fail) 4074 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 4075 p2p->pending_pd_devaddr, 4076 for_join ? 4077 P2P_PROV_DISC_TIMEOUT_JOIN : 4078 P2P_PROV_DISC_TIMEOUT, 4079 adv_id, adv_mac, NULL); 4080 p2p_reset_pending_pd(p2p); 4081 } 4082 } 4083 4084 4085 static void p2p_timeout_invite(struct p2p_data *p2p) 4086 { 4087 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4088 p2p_set_state(p2p, P2P_INVITE_LISTEN); 4089 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 4090 /* 4091 * Better remain on operating channel instead of listen channel 4092 * when running a group. 4093 */ 4094 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 4095 p2p_set_timeout(p2p, 0, 100000); 4096 return; 4097 } 4098 p2p_listen_in_find(p2p, 0); 4099 } 4100 4101 4102 static void p2p_timeout_invite_listen(struct p2p_data *p2p) 4103 { 4104 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 4105 p2p_set_state(p2p, P2P_INVITE); 4106 p2p_invite_send(p2p, p2p->invite_peer, 4107 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id); 4108 } else { 4109 if (p2p->invite_peer) { 4110 p2p_dbg(p2p, "Invitation Request retry limit reached"); 4111 if (p2p->cfg->invitation_result) 4112 p2p->cfg->invitation_result( 4113 p2p->cfg->cb_ctx, -1, NULL, NULL, 4114 p2p->invite_peer->info.p2p_device_addr, 4115 0, 0); 4116 } 4117 p2p_set_state(p2p, P2P_IDLE); 4118 } 4119 } 4120 4121 4122 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 4123 { 4124 struct p2p_data *p2p = eloop_ctx; 4125 4126 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 4127 4128 p2p->in_listen = 0; 4129 if (p2p->drv_in_listen) { 4130 p2p_dbg(p2p, "Driver is still in listen state - stop it"); 4131 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 4132 } 4133 4134 switch (p2p->state) { 4135 case P2P_IDLE: 4136 /* Check if we timed out waiting for PD req */ 4137 if (p2p->pending_action_state == P2P_PENDING_PD) 4138 p2p_timeout_prov_disc_req(p2p); 4139 break; 4140 case P2P_SEARCH: 4141 /* Check if we timed out waiting for PD req */ 4142 if (p2p->pending_action_state == P2P_PENDING_PD) 4143 p2p_timeout_prov_disc_req(p2p); 4144 if (p2p->search_delay && !p2p->in_search_delay) { 4145 p2p_dbg(p2p, "Delay search operation by %u ms", 4146 p2p->search_delay); 4147 p2p->in_search_delay = 1; 4148 p2p_set_timeout(p2p, p2p->search_delay / 1000, 4149 (p2p->search_delay % 1000) * 1000); 4150 break; 4151 } 4152 p2p->in_search_delay = 0; 4153 p2p_search(p2p); 4154 break; 4155 case P2P_CONNECT: 4156 p2p_timeout_connect(p2p); 4157 break; 4158 case P2P_CONNECT_LISTEN: 4159 p2p_timeout_connect_listen(p2p); 4160 break; 4161 case P2P_GO_NEG: 4162 break; 4163 case P2P_LISTEN_ONLY: 4164 /* Check if we timed out waiting for PD req */ 4165 if (p2p->pending_action_state == P2P_PENDING_PD) 4166 p2p_timeout_prov_disc_req(p2p); 4167 4168 if (p2p->ext_listen_only) { 4169 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 4170 p2p->ext_listen_only = 0; 4171 p2p_set_state(p2p, P2P_IDLE); 4172 } 4173 break; 4174 case P2P_WAIT_PEER_CONNECT: 4175 p2p_timeout_wait_peer_connect(p2p); 4176 break; 4177 case P2P_WAIT_PEER_IDLE: 4178 p2p_timeout_wait_peer_idle(p2p); 4179 break; 4180 case P2P_SD_DURING_FIND: 4181 p2p_timeout_sd_during_find(p2p); 4182 break; 4183 case P2P_PROVISIONING: 4184 break; 4185 case P2P_PD_DURING_FIND: 4186 p2p_timeout_prov_disc_during_find(p2p); 4187 break; 4188 case P2P_INVITE: 4189 p2p_timeout_invite(p2p); 4190 break; 4191 case P2P_INVITE_LISTEN: 4192 p2p_timeout_invite_listen(p2p); 4193 break; 4194 } 4195 } 4196 4197 4198 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 4199 { 4200 struct p2p_device *dev; 4201 4202 dev = p2p_get_device(p2p, peer_addr); 4203 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 4204 MACSTR, MAC2STR(peer_addr)); 4205 if (dev == NULL) { 4206 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 4207 return -1; 4208 } 4209 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 4210 dev->flags |= P2P_DEV_USER_REJECTED; 4211 return 0; 4212 } 4213 4214 4215 const char * p2p_wps_method_text(enum p2p_wps_method method) 4216 { 4217 switch (method) { 4218 case WPS_NOT_READY: 4219 return "not-ready"; 4220 case WPS_PIN_DISPLAY: 4221 return "Display"; 4222 case WPS_PIN_KEYPAD: 4223 return "Keypad"; 4224 case WPS_PBC: 4225 return "PBC"; 4226 case WPS_NFC: 4227 return "NFC"; 4228 case WPS_P2PS: 4229 return "P2PS"; 4230 } 4231 4232 return "??"; 4233 } 4234 4235 4236 static const char * p2p_go_state_text(enum p2p_go_state go_state) 4237 { 4238 switch (go_state) { 4239 case UNKNOWN_GO: 4240 return "unknown"; 4241 case LOCAL_GO: 4242 return "local"; 4243 case REMOTE_GO: 4244 return "remote"; 4245 } 4246 4247 return "??"; 4248 } 4249 4250 4251 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 4252 const u8 *addr, int next) 4253 { 4254 struct p2p_device *dev; 4255 4256 if (addr) 4257 dev = p2p_get_device(p2p, addr); 4258 else 4259 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4260 4261 if (dev && next) { 4262 dev = dl_list_first(&dev->list, struct p2p_device, list); 4263 if (&dev->list == &p2p->devices) 4264 dev = NULL; 4265 } 4266 4267 if (dev == NULL) 4268 return NULL; 4269 4270 return &dev->info; 4271 } 4272 4273 4274 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 4275 char *buf, size_t buflen) 4276 { 4277 struct p2p_device *dev; 4278 int res; 4279 char *pos, *end; 4280 struct os_reltime now; 4281 4282 if (info == NULL) 4283 return -1; 4284 4285 dev = (struct p2p_device *) (((u8 *) info) - 4286 offsetof(struct p2p_device, info)); 4287 4288 pos = buf; 4289 end = buf + buflen; 4290 4291 os_get_reltime(&now); 4292 res = os_snprintf(pos, end - pos, 4293 "age=%d\n" 4294 "listen_freq=%d\n" 4295 "wps_method=%s\n" 4296 "interface_addr=" MACSTR "\n" 4297 "member_in_go_dev=" MACSTR "\n" 4298 "member_in_go_iface=" MACSTR "\n" 4299 "go_neg_req_sent=%d\n" 4300 "go_state=%s\n" 4301 "dialog_token=%u\n" 4302 "intended_addr=" MACSTR "\n" 4303 "country=%c%c\n" 4304 "oper_freq=%d\n" 4305 "req_config_methods=0x%x\n" 4306 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 4307 "status=%d\n" 4308 "invitation_reqs=%u\n", 4309 (int) (now.sec - dev->last_seen.sec), 4310 dev->listen_freq, 4311 p2p_wps_method_text(dev->wps_method), 4312 MAC2STR(dev->interface_addr), 4313 MAC2STR(dev->member_in_go_dev), 4314 MAC2STR(dev->member_in_go_iface), 4315 dev->go_neg_req_sent, 4316 p2p_go_state_text(dev->go_state), 4317 dev->dialog_token, 4318 MAC2STR(dev->intended_addr), 4319 dev->country[0] ? dev->country[0] : '_', 4320 dev->country[1] ? dev->country[1] : '_', 4321 dev->oper_freq, 4322 dev->req_config_methods, 4323 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 4324 "[PROBE_REQ_ONLY]" : "", 4325 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 4326 dev->flags & P2P_DEV_NOT_YET_READY ? 4327 "[NOT_YET_READY]" : "", 4328 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 4329 "[PD_PEER_DISPLAY]" : "", 4330 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 4331 "[PD_PEER_KEYPAD]" : "", 4332 dev->flags & P2P_DEV_PD_PEER_P2PS ? 4333 "[PD_PEER_P2PS]" : "", 4334 dev->flags & P2P_DEV_USER_REJECTED ? 4335 "[USER_REJECTED]" : "", 4336 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 4337 "[PEER_WAITING_RESPONSE]" : "", 4338 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 4339 "[PREFER_PERSISTENT_GROUP]" : "", 4340 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 4341 "[WAIT_GO_NEG_RESPONSE]" : "", 4342 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 4343 "[WAIT_GO_NEG_CONFIRM]" : "", 4344 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 4345 "[GROUP_CLIENT_ONLY]" : "", 4346 dev->flags & P2P_DEV_FORCE_FREQ ? 4347 "[FORCE_FREQ]" : "", 4348 dev->flags & P2P_DEV_PD_FOR_JOIN ? 4349 "[PD_FOR_JOIN]" : "", 4350 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ? 4351 "[LAST_SEEN_AS_GROUP_CLIENT]" : "", 4352 dev->status, 4353 dev->invitation_reqs); 4354 if (os_snprintf_error(end - pos, res)) 4355 return pos - buf; 4356 pos += res; 4357 4358 if (dev->ext_listen_period) { 4359 res = os_snprintf(pos, end - pos, 4360 "ext_listen_period=%u\n" 4361 "ext_listen_interval=%u\n", 4362 dev->ext_listen_period, 4363 dev->ext_listen_interval); 4364 if (os_snprintf_error(end - pos, res)) 4365 return pos - buf; 4366 pos += res; 4367 } 4368 4369 if (dev->oper_ssid_len) { 4370 res = os_snprintf(pos, end - pos, 4371 "oper_ssid=%s\n", 4372 wpa_ssid_txt(dev->oper_ssid, 4373 dev->oper_ssid_len)); 4374 if (os_snprintf_error(end - pos, res)) 4375 return pos - buf; 4376 pos += res; 4377 } 4378 4379 #ifdef CONFIG_WIFI_DISPLAY 4380 if (dev->info.wfd_subelems) { 4381 res = os_snprintf(pos, end - pos, "wfd_subelems="); 4382 if (os_snprintf_error(end - pos, res)) 4383 return pos - buf; 4384 pos += res; 4385 4386 pos += wpa_snprintf_hex(pos, end - pos, 4387 wpabuf_head(dev->info.wfd_subelems), 4388 wpabuf_len(dev->info.wfd_subelems)); 4389 4390 res = os_snprintf(pos, end - pos, "\n"); 4391 if (os_snprintf_error(end - pos, res)) 4392 return pos - buf; 4393 pos += res; 4394 } 4395 #endif /* CONFIG_WIFI_DISPLAY */ 4396 4397 return pos - buf; 4398 } 4399 4400 4401 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 4402 { 4403 return p2p_get_device(p2p, addr) != NULL; 4404 } 4405 4406 4407 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 4408 { 4409 if (enabled) { 4410 p2p_dbg(p2p, "Client discoverability enabled"); 4411 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4412 } else { 4413 p2p_dbg(p2p, "Client discoverability disabled"); 4414 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4415 } 4416 } 4417 4418 4419 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 4420 u32 duration2, u32 interval2) 4421 { 4422 struct wpabuf *req; 4423 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 4424 u8 *len; 4425 4426 req = wpabuf_alloc(100); 4427 if (req == NULL) 4428 return NULL; 4429 4430 if (duration1 || interval1) { 4431 os_memset(&desc1, 0, sizeof(desc1)); 4432 desc1.count_type = 1; 4433 desc1.duration = duration1; 4434 desc1.interval = interval1; 4435 ptr1 = &desc1; 4436 4437 if (duration2 || interval2) { 4438 os_memset(&desc2, 0, sizeof(desc2)); 4439 desc2.count_type = 2; 4440 desc2.duration = duration2; 4441 desc2.interval = interval2; 4442 ptr2 = &desc2; 4443 } 4444 } 4445 4446 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 4447 len = p2p_buf_add_ie_hdr(req); 4448 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 4449 p2p_buf_update_ie_hdr(req, len); 4450 4451 return req; 4452 } 4453 4454 4455 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 4456 const u8 *own_interface_addr, unsigned int freq, 4457 u32 duration1, u32 interval1, u32 duration2, 4458 u32 interval2) 4459 { 4460 struct wpabuf *req; 4461 4462 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 4463 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 4464 "dur2=%u int2=%u", 4465 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 4466 freq, duration1, interval1, duration2, interval2); 4467 4468 req = p2p_build_presence_req(duration1, interval1, duration2, 4469 interval2); 4470 if (req == NULL) 4471 return -1; 4472 4473 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4474 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 4475 go_interface_addr, 4476 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 4477 p2p_dbg(p2p, "Failed to send Action frame"); 4478 } 4479 wpabuf_free(req); 4480 4481 return 0; 4482 } 4483 4484 4485 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 4486 size_t noa_len, u8 dialog_token) 4487 { 4488 struct wpabuf *resp; 4489 u8 *len; 4490 4491 resp = wpabuf_alloc(100 + noa_len); 4492 if (resp == NULL) 4493 return NULL; 4494 4495 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 4496 len = p2p_buf_add_ie_hdr(resp); 4497 p2p_buf_add_status(resp, status); 4498 if (noa) { 4499 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 4500 wpabuf_put_le16(resp, noa_len); 4501 wpabuf_put_data(resp, noa, noa_len); 4502 } else 4503 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 4504 p2p_buf_update_ie_hdr(resp, len); 4505 4506 return resp; 4507 } 4508 4509 4510 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 4511 const u8 *sa, const u8 *data, size_t len, 4512 int rx_freq) 4513 { 4514 struct p2p_message msg; 4515 u8 status; 4516 struct wpabuf *resp; 4517 size_t g; 4518 struct p2p_group *group = NULL; 4519 int parsed = 0; 4520 u8 noa[50]; 4521 int noa_len; 4522 4523 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 4524 4525 for (g = 0; g < p2p->num_groups; g++) { 4526 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 4527 ETH_ALEN) == 0) { 4528 group = p2p->groups[g]; 4529 break; 4530 } 4531 } 4532 if (group == NULL) { 4533 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 4534 MACSTR, MAC2STR(da)); 4535 return; 4536 } 4537 4538 if (p2p_parse(data, len, &msg) < 0) { 4539 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 4540 status = P2P_SC_FAIL_INVALID_PARAMS; 4541 goto fail; 4542 } 4543 parsed = 1; 4544 4545 if (msg.noa == NULL) { 4546 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 4547 status = P2P_SC_FAIL_INVALID_PARAMS; 4548 goto fail; 4549 } 4550 4551 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 4552 4553 fail: 4554 if (p2p->cfg->get_noa) 4555 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 4556 sizeof(noa)); 4557 else 4558 noa_len = -1; 4559 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 4560 noa_len > 0 ? noa_len : 0, 4561 msg.dialog_token); 4562 if (parsed) 4563 p2p_parse_free(&msg); 4564 if (resp == NULL) 4565 return; 4566 4567 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4568 if (p2p_send_action(p2p, rx_freq, sa, da, da, 4569 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 4570 p2p_dbg(p2p, "Failed to send Action frame"); 4571 } 4572 wpabuf_free(resp); 4573 } 4574 4575 4576 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 4577 const u8 *sa, const u8 *data, size_t len) 4578 { 4579 struct p2p_message msg; 4580 4581 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 4582 4583 if (p2p_parse(data, len, &msg) < 0) { 4584 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 4585 return; 4586 } 4587 4588 if (msg.status == NULL || msg.noa == NULL) { 4589 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 4590 p2p_parse_free(&msg); 4591 return; 4592 } 4593 4594 if (p2p->cfg->presence_resp) { 4595 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status, 4596 msg.noa, msg.noa_len); 4597 } 4598 4599 if (*msg.status) { 4600 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 4601 *msg.status); 4602 p2p_parse_free(&msg); 4603 return; 4604 } 4605 4606 p2p_dbg(p2p, "P2P Presence Request was accepted"); 4607 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 4608 msg.noa, msg.noa_len); 4609 /* TODO: process NoA */ 4610 p2p_parse_free(&msg); 4611 } 4612 4613 4614 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4615 { 4616 struct p2p_data *p2p = eloop_ctx; 4617 4618 if (p2p->ext_listen_interval) { 4619 /* Schedule next extended listen timeout */ 4620 eloop_register_timeout(p2p->ext_listen_interval_sec, 4621 p2p->ext_listen_interval_usec, 4622 p2p_ext_listen_timeout, p2p, NULL); 4623 } 4624 4625 if ((p2p->cfg->is_p2p_in_progress && 4626 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) || 4627 (p2p->pending_action_state == P2P_PENDING_PD && 4628 p2p->pd_retries > 0)) { 4629 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)", 4630 p2p_state_txt(p2p->state)); 4631 return; 4632 } 4633 4634 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 4635 /* 4636 * This should not really happen, but it looks like the Listen 4637 * command may fail is something else (e.g., a scan) was 4638 * running at an inconvenient time. As a workaround, allow new 4639 * Extended Listen operation to be started. 4640 */ 4641 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 4642 p2p->ext_listen_only = 0; 4643 p2p_set_state(p2p, P2P_IDLE); 4644 } 4645 4646 if (p2p->state != P2P_IDLE) { 4647 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 4648 return; 4649 } 4650 4651 p2p_dbg(p2p, "Extended Listen timeout"); 4652 p2p->ext_listen_only = 1; 4653 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 4654 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 4655 p2p->ext_listen_only = 0; 4656 } 4657 } 4658 4659 4660 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 4661 unsigned int interval) 4662 { 4663 if (period > 65535 || interval > 65535 || period > interval || 4664 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 4665 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 4666 period, interval); 4667 return -1; 4668 } 4669 4670 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 4671 4672 if (interval == 0) { 4673 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 4674 p2p->ext_listen_period = 0; 4675 p2p->ext_listen_interval = 0; 4676 return 0; 4677 } 4678 4679 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 4680 period, interval); 4681 p2p->ext_listen_period = period; 4682 p2p->ext_listen_interval = interval; 4683 p2p->ext_listen_interval_sec = interval / 1000; 4684 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 4685 4686 eloop_register_timeout(p2p->ext_listen_interval_sec, 4687 p2p->ext_listen_interval_usec, 4688 p2p_ext_listen_timeout, p2p, NULL); 4689 4690 return 0; 4691 } 4692 4693 4694 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4695 const u8 *ie, size_t ie_len) 4696 { 4697 struct p2p_message msg; 4698 4699 if (bssid == NULL || ie == NULL) 4700 return; 4701 4702 os_memset(&msg, 0, sizeof(msg)); 4703 if (p2p_parse_ies(ie, ie_len, &msg)) 4704 return; 4705 if (msg.minor_reason_code == NULL) { 4706 p2p_parse_free(&msg); 4707 return; 4708 } 4709 4710 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 4711 " reason_code=%u minor_reason_code=%u", 4712 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4713 4714 p2p_parse_free(&msg); 4715 } 4716 4717 4718 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4719 const u8 *ie, size_t ie_len) 4720 { 4721 struct p2p_message msg; 4722 4723 if (bssid == NULL || ie == NULL) 4724 return; 4725 4726 os_memset(&msg, 0, sizeof(msg)); 4727 if (p2p_parse_ies(ie, ie_len, &msg)) 4728 return; 4729 if (msg.minor_reason_code == NULL) { 4730 p2p_parse_free(&msg); 4731 return; 4732 } 4733 4734 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR 4735 " reason_code=%u minor_reason_code=%u", 4736 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4737 4738 p2p_parse_free(&msg); 4739 } 4740 4741 4742 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 4743 { 4744 if (enabled) { 4745 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 4746 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4747 } else { 4748 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 4749 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4750 } 4751 } 4752 4753 4754 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class, 4755 u8 *op_channel, 4756 struct wpa_freq_range_list *avoid_list, 4757 struct wpa_freq_range_list *disallow_list) 4758 { 4759 return p2p_channel_random_social(&p2p->channels, op_class, op_channel, 4760 avoid_list, disallow_list); 4761 } 4762 4763 4764 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 4765 u8 forced) 4766 { 4767 if (p2p_channel_to_freq(reg_class, channel) < 0) 4768 return -1; 4769 4770 /* 4771 * Listen channel was set in configuration or set by control interface; 4772 * cannot override it. 4773 */ 4774 if (p2p->cfg->channel_forced && forced == 0) { 4775 p2p_dbg(p2p, 4776 "Listen channel was previously configured - do not override based on optimization"); 4777 return -1; 4778 } 4779 4780 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 4781 reg_class, channel); 4782 4783 if (p2p->state == P2P_IDLE) { 4784 p2p->cfg->reg_class = reg_class; 4785 p2p->cfg->channel = channel; 4786 p2p->cfg->channel_forced = forced; 4787 } else { 4788 p2p_dbg(p2p, "Defer setting listen channel"); 4789 p2p->pending_reg_class = reg_class; 4790 p2p->pending_channel = channel; 4791 p2p->pending_channel_forced = forced; 4792 } 4793 4794 return 0; 4795 } 4796 4797 4798 u8 p2p_get_listen_channel(struct p2p_data *p2p) 4799 { 4800 return p2p->cfg->channel; 4801 } 4802 4803 4804 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4805 { 4806 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 4807 if (postfix == NULL) { 4808 p2p->cfg->ssid_postfix_len = 0; 4809 return 0; 4810 } 4811 if (len > sizeof(p2p->cfg->ssid_postfix)) 4812 return -1; 4813 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4814 p2p->cfg->ssid_postfix_len = len; 4815 return 0; 4816 } 4817 4818 4819 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4820 int cfg_op_channel) 4821 { 4822 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 4823 return -1; 4824 4825 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 4826 op_reg_class, op_channel); 4827 p2p->cfg->op_reg_class = op_reg_class; 4828 p2p->cfg->op_channel = op_channel; 4829 p2p->cfg->cfg_op_channel = cfg_op_channel; 4830 return 0; 4831 } 4832 4833 4834 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4835 const struct p2p_channel *pref_chan) 4836 { 4837 struct p2p_channel *n; 4838 4839 if (pref_chan) { 4840 n = os_memdup(pref_chan, 4841 num_pref_chan * sizeof(struct p2p_channel)); 4842 if (n == NULL) 4843 return -1; 4844 } else 4845 n = NULL; 4846 4847 os_free(p2p->cfg->pref_chan); 4848 p2p->cfg->pref_chan = n; 4849 p2p->cfg->num_pref_chan = num_pref_chan; 4850 4851 return 0; 4852 } 4853 4854 4855 int p2p_set_no_go_freq(struct p2p_data *p2p, 4856 const struct wpa_freq_range_list *list) 4857 { 4858 struct wpa_freq_range *tmp; 4859 4860 if (list == NULL || list->num == 0) { 4861 os_free(p2p->no_go_freq.range); 4862 p2p->no_go_freq.range = NULL; 4863 p2p->no_go_freq.num = 0; 4864 return 0; 4865 } 4866 4867 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range)); 4868 if (tmp == NULL) 4869 return -1; 4870 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range)); 4871 os_free(p2p->no_go_freq.range); 4872 p2p->no_go_freq.range = tmp; 4873 p2p->no_go_freq.num = list->num; 4874 p2p_dbg(p2p, "Updated no GO chan list"); 4875 4876 return 0; 4877 } 4878 4879 4880 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4881 u8 *iface_addr) 4882 { 4883 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4884 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4885 return -1; 4886 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4887 return 0; 4888 } 4889 4890 4891 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4892 u8 *dev_addr) 4893 { 4894 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4895 if (dev == NULL) 4896 return -1; 4897 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4898 return 0; 4899 } 4900 4901 4902 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4903 { 4904 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4905 if (is_zero_ether_addr(p2p->peer_filter)) 4906 p2p_dbg(p2p, "Disable peer filter"); 4907 else 4908 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4909 MAC2STR(p2p->peer_filter)); 4910 } 4911 4912 4913 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4914 { 4915 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4916 if (p2p->cross_connect == enabled) 4917 return; 4918 p2p->cross_connect = enabled; 4919 /* TODO: may need to tear down any action group where we are GO(?) */ 4920 } 4921 4922 4923 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4924 { 4925 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4926 if (dev == NULL) 4927 return -1; 4928 if (dev->oper_freq <= 0) 4929 return -1; 4930 return dev->oper_freq; 4931 } 4932 4933 4934 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4935 { 4936 p2p_dbg(p2p, "Intra BSS distribution %s", 4937 enabled ? "enabled" : "disabled"); 4938 p2p->cfg->p2p_intra_bss = enabled; 4939 } 4940 4941 4942 void p2p_update_channel_list(struct p2p_data *p2p, 4943 const struct p2p_channels *chan, 4944 const struct p2p_channels *cli_chan) 4945 { 4946 p2p_dbg(p2p, "Update channel list"); 4947 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4948 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 4949 os_memcpy(&p2p->cfg->cli_channels, cli_chan, 4950 sizeof(struct p2p_channels)); 4951 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 4952 } 4953 4954 4955 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4956 const u8 *src, const u8 *bssid, const u8 *buf, 4957 size_t len, unsigned int wait_time) 4958 { 4959 int res, scheduled; 4960 4961 res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4962 buf, len, wait_time, &scheduled); 4963 if (res == 0 && scheduled && p2p->in_listen && freq > 0 && 4964 p2p->drv_in_listen > 0 && 4965 (unsigned int) p2p->drv_in_listen != freq) { 4966 p2p_dbg(p2p, 4967 "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz", 4968 p2p->drv_in_listen, freq); 4969 p2p_stop_listen_for_freq(p2p, freq); 4970 } 4971 return res; 4972 } 4973 4974 4975 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4976 int freq_overall) 4977 { 4978 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 4979 freq_24, freq_5, freq_overall); 4980 p2p->best_freq_24 = freq_24; 4981 p2p->best_freq_5 = freq_5; 4982 p2p->best_freq_overall = freq_overall; 4983 } 4984 4985 4986 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 4987 { 4988 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 4989 p2p->own_freq_preference = freq; 4990 } 4991 4992 4993 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4994 { 4995 if (p2p == NULL || p2p->go_neg_peer == NULL) 4996 return NULL; 4997 return p2p->go_neg_peer->info.p2p_device_addr; 4998 } 4999 5000 5001 const struct p2p_peer_info * 5002 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 5003 { 5004 struct p2p_device *dev; 5005 5006 if (addr) { 5007 dev = p2p_get_device(p2p, addr); 5008 if (!dev) 5009 return NULL; 5010 5011 if (!next) { 5012 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5013 return NULL; 5014 5015 return &dev->info; 5016 } else { 5017 do { 5018 dev = dl_list_first(&dev->list, 5019 struct p2p_device, 5020 list); 5021 if (!dev || &dev->list == &p2p->devices) 5022 return NULL; 5023 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 5024 } 5025 } else { 5026 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 5027 if (!dev) 5028 return NULL; 5029 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 5030 dev = dl_list_first(&dev->list, 5031 struct p2p_device, 5032 list); 5033 if (!dev || &dev->list == &p2p->devices) 5034 return NULL; 5035 } 5036 } 5037 5038 return &dev->info; 5039 } 5040 5041 5042 int p2p_in_progress(struct p2p_data *p2p) 5043 { 5044 if (p2p == NULL) 5045 return 0; 5046 if (p2p->state == P2P_SEARCH) 5047 return 2; 5048 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 5049 } 5050 5051 5052 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 5053 u8 client_timeout) 5054 { 5055 if (p2p) { 5056 p2p->go_timeout = go_timeout; 5057 p2p->client_timeout = client_timeout; 5058 } 5059 } 5060 5061 5062 #ifdef CONFIG_WIFI_DISPLAY 5063 5064 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 5065 { 5066 size_t g; 5067 struct p2p_group *group; 5068 5069 for (g = 0; g < p2p->num_groups; g++) { 5070 group = p2p->groups[g]; 5071 p2p_group_force_beacon_update_ies(group); 5072 } 5073 } 5074 5075 5076 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 5077 { 5078 wpabuf_free(p2p->wfd_ie_beacon); 5079 p2p->wfd_ie_beacon = ie; 5080 p2p_update_wfd_ie_groups(p2p); 5081 return 0; 5082 } 5083 5084 5085 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 5086 { 5087 wpabuf_free(p2p->wfd_ie_probe_req); 5088 p2p->wfd_ie_probe_req = ie; 5089 return 0; 5090 } 5091 5092 5093 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 5094 { 5095 wpabuf_free(p2p->wfd_ie_probe_resp); 5096 p2p->wfd_ie_probe_resp = ie; 5097 p2p_update_wfd_ie_groups(p2p); 5098 return 0; 5099 } 5100 5101 5102 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 5103 { 5104 wpabuf_free(p2p->wfd_ie_assoc_req); 5105 p2p->wfd_ie_assoc_req = ie; 5106 return 0; 5107 } 5108 5109 5110 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 5111 { 5112 wpabuf_free(p2p->wfd_ie_invitation); 5113 p2p->wfd_ie_invitation = ie; 5114 return 0; 5115 } 5116 5117 5118 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 5119 { 5120 wpabuf_free(p2p->wfd_ie_prov_disc_req); 5121 p2p->wfd_ie_prov_disc_req = ie; 5122 return 0; 5123 } 5124 5125 5126 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 5127 { 5128 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 5129 p2p->wfd_ie_prov_disc_resp = ie; 5130 return 0; 5131 } 5132 5133 5134 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 5135 { 5136 wpabuf_free(p2p->wfd_ie_go_neg); 5137 p2p->wfd_ie_go_neg = ie; 5138 return 0; 5139 } 5140 5141 5142 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5143 { 5144 wpabuf_free(p2p->wfd_dev_info); 5145 if (elem) { 5146 p2p->wfd_dev_info = wpabuf_dup(elem); 5147 if (p2p->wfd_dev_info == NULL) 5148 return -1; 5149 } else 5150 p2p->wfd_dev_info = NULL; 5151 5152 return 0; 5153 } 5154 5155 5156 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5157 { 5158 wpabuf_free(p2p->wfd_r2_dev_info); 5159 if (elem) { 5160 p2p->wfd_r2_dev_info = wpabuf_dup(elem); 5161 if (p2p->wfd_r2_dev_info == NULL) 5162 return -1; 5163 } else 5164 p2p->wfd_r2_dev_info = NULL; 5165 5166 return 0; 5167 } 5168 5169 5170 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 5171 { 5172 wpabuf_free(p2p->wfd_assoc_bssid); 5173 if (elem) { 5174 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 5175 if (p2p->wfd_assoc_bssid == NULL) 5176 return -1; 5177 } else 5178 p2p->wfd_assoc_bssid = NULL; 5179 5180 return 0; 5181 } 5182 5183 5184 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 5185 const struct wpabuf *elem) 5186 { 5187 wpabuf_free(p2p->wfd_coupled_sink_info); 5188 if (elem) { 5189 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 5190 if (p2p->wfd_coupled_sink_info == NULL) 5191 return -1; 5192 } else 5193 p2p->wfd_coupled_sink_info = NULL; 5194 5195 return 0; 5196 } 5197 5198 #endif /* CONFIG_WIFI_DISPLAY */ 5199 5200 5201 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 5202 int max_disc_tu) 5203 { 5204 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 5205 return -1; 5206 5207 p2p->min_disc_int = min_disc_int; 5208 p2p->max_disc_int = max_disc_int; 5209 p2p->max_disc_tu = max_disc_tu; 5210 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 5211 min_disc_int, max_disc_int, max_disc_tu); 5212 5213 return 0; 5214 } 5215 5216 5217 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 5218 { 5219 va_list ap; 5220 char buf[500]; 5221 5222 if (!p2p->cfg->debug_print) 5223 return; 5224 5225 va_start(ap, fmt); 5226 vsnprintf(buf, sizeof(buf), fmt, ap); 5227 buf[sizeof(buf) - 1] = '\0'; 5228 va_end(ap); 5229 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 5230 } 5231 5232 5233 void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 5234 { 5235 va_list ap; 5236 char buf[500]; 5237 5238 if (!p2p->cfg->debug_print) 5239 return; 5240 5241 va_start(ap, fmt); 5242 vsnprintf(buf, sizeof(buf), fmt, ap); 5243 buf[sizeof(buf) - 1] = '\0'; 5244 va_end(ap); 5245 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 5246 } 5247 5248 5249 void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 5250 { 5251 va_list ap; 5252 char buf[500]; 5253 5254 if (!p2p->cfg->debug_print) 5255 return; 5256 5257 va_start(ap, fmt); 5258 vsnprintf(buf, sizeof(buf), fmt, ap); 5259 buf[sizeof(buf) - 1] = '\0'; 5260 va_end(ap); 5261 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 5262 } 5263 5264 5265 void p2p_loop_on_known_peers(struct p2p_data *p2p, 5266 void (*peer_callback)(struct p2p_peer_info *peer, 5267 void *user_data), 5268 void *user_data) 5269 { 5270 struct p2p_device *dev, *n; 5271 5272 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 5273 peer_callback(&dev->info, user_data); 5274 } 5275 } 5276 5277 5278 #ifdef CONFIG_WPS_NFC 5279 5280 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p, 5281 int client_freq, 5282 const u8 *go_dev_addr, 5283 const u8 *ssid, size_t ssid_len) 5284 { 5285 struct wpabuf *buf; 5286 u8 op_class, channel; 5287 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP; 5288 5289 buf = wpabuf_alloc(1000); 5290 if (buf == NULL) 5291 return NULL; 5292 5293 op_class = p2p->cfg->reg_class; 5294 channel = p2p->cfg->channel; 5295 5296 p2p_buf_add_capability(buf, p2p->dev_capab & 5297 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 5298 p2p_buf_add_device_info(buf, p2p, NULL); 5299 5300 if (p2p->num_groups > 0) { 5301 int freq = p2p_group_get_freq(p2p->groups[0]); 5302 role = P2P_GO_IN_A_GROUP; 5303 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) { 5304 p2p_dbg(p2p, 5305 "Unknown GO operating frequency %d MHz for NFC handover", 5306 freq); 5307 wpabuf_free(buf); 5308 return NULL; 5309 } 5310 } else if (client_freq > 0) { 5311 role = P2P_CLIENT_IN_A_GROUP; 5312 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) { 5313 p2p_dbg(p2p, 5314 "Unknown client operating frequency %d MHz for NFC handover", 5315 client_freq); 5316 wpabuf_free(buf); 5317 return NULL; 5318 } 5319 } 5320 5321 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class, 5322 channel, role); 5323 5324 if (p2p->num_groups > 0) { 5325 /* Limit number of clients to avoid very long message */ 5326 p2p_buf_add_group_info(p2p->groups[0], buf, 5); 5327 p2p_group_buf_add_id(p2p->groups[0], buf); 5328 } else if (client_freq > 0 && 5329 go_dev_addr && !is_zero_ether_addr(go_dev_addr) && 5330 ssid && ssid_len > 0) { 5331 /* 5332 * Add the optional P2P Group ID to indicate in which group this 5333 * device is a P2P Client. 5334 */ 5335 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len); 5336 } 5337 5338 return buf; 5339 } 5340 5341 5342 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 5343 int client_freq, 5344 const u8 *go_dev_addr, 5345 const u8 *ssid, size_t ssid_len) 5346 { 5347 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5348 ssid_len); 5349 } 5350 5351 5352 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 5353 int client_freq, 5354 const u8 *go_dev_addr, 5355 const u8 *ssid, size_t ssid_len) 5356 { 5357 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5358 ssid_len); 5359 } 5360 5361 5362 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 5363 struct p2p_nfc_params *params) 5364 { 5365 struct p2p_message msg; 5366 struct p2p_device *dev; 5367 const u8 *p2p_dev_addr; 5368 int freq; 5369 enum p2p_role_indication role; 5370 5371 params->next_step = NO_ACTION; 5372 5373 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len, 5374 params->p2p_attr, params->p2p_len, &msg)) { 5375 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC"); 5376 p2p_parse_free(&msg); 5377 return -1; 5378 } 5379 5380 if (msg.p2p_device_addr) 5381 p2p_dev_addr = msg.p2p_device_addr; 5382 else if (msg.device_id) 5383 p2p_dev_addr = msg.device_id; 5384 else { 5385 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 5386 p2p_parse_free(&msg); 5387 return -1; 5388 } 5389 5390 if (msg.oob_dev_password) { 5391 os_memcpy(params->oob_dev_pw, msg.oob_dev_password, 5392 msg.oob_dev_password_len); 5393 params->oob_dev_pw_len = msg.oob_dev_password_len; 5394 } 5395 5396 dev = p2p_create_device(p2p, p2p_dev_addr); 5397 if (dev == NULL) { 5398 p2p_parse_free(&msg); 5399 return -1; 5400 } 5401 5402 params->peer = &dev->info; 5403 5404 os_get_reltime(&dev->last_seen); 5405 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 5406 p2p_copy_wps_info(p2p, dev, 0, &msg); 5407 5408 if (!msg.oob_go_neg_channel) { 5409 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included"); 5410 p2p_parse_free(&msg); 5411 return -1; 5412 } 5413 5414 if (msg.oob_go_neg_channel[3] == 0 && 5415 msg.oob_go_neg_channel[4] == 0) 5416 freq = 0; 5417 else 5418 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3], 5419 msg.oob_go_neg_channel[4]); 5420 if (freq < 0) { 5421 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel"); 5422 p2p_parse_free(&msg); 5423 return -1; 5424 } 5425 role = msg.oob_go_neg_channel[5]; 5426 5427 if (role == P2P_GO_IN_A_GROUP) { 5428 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq); 5429 params->go_freq = freq; 5430 } else if (role == P2P_CLIENT_IN_A_GROUP) { 5431 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz", 5432 freq); 5433 params->go_freq = freq; 5434 } else 5435 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq); 5436 dev->oob_go_neg_freq = freq; 5437 5438 if (!params->sel && role != P2P_GO_IN_A_GROUP) { 5439 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 5440 p2p->cfg->channel); 5441 if (freq < 0) { 5442 p2p_dbg(p2p, "Own listen channel not known"); 5443 p2p_parse_free(&msg); 5444 return -1; 5445 } 5446 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq); 5447 dev->oob_go_neg_freq = freq; 5448 } 5449 5450 if (msg.group_id) { 5451 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN); 5452 params->go_ssid_len = msg.group_id_len - ETH_ALEN; 5453 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN, 5454 params->go_ssid_len); 5455 } 5456 5457 if (dev->flags & P2P_DEV_USER_REJECTED) { 5458 p2p_dbg(p2p, "Do not report rejected device"); 5459 p2p_parse_free(&msg); 5460 return 0; 5461 } 5462 5463 if (!(dev->flags & P2P_DEV_REPORTED)) { 5464 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info, 5465 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 5466 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 5467 } 5468 p2p_parse_free(&msg); 5469 5470 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0) 5471 params->next_step = BOTH_GO; 5472 else if (role == P2P_GO_IN_A_GROUP) 5473 params->next_step = JOIN_GROUP; 5474 else if (role == P2P_CLIENT_IN_A_GROUP) { 5475 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 5476 params->next_step = PEER_CLIENT; 5477 } else if (p2p->num_groups > 0) 5478 params->next_step = AUTH_JOIN; 5479 else if (params->sel) 5480 params->next_step = INIT_GO_NEG; 5481 else 5482 params->next_step = RESP_GO_NEG; 5483 5484 return 0; 5485 } 5486 5487 5488 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 5489 int go_intent, 5490 const u8 *own_interface_addr) 5491 { 5492 5493 p2p->authorized_oob_dev_pw_id = dev_pw_id; 5494 if (dev_pw_id == 0) { 5495 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover"); 5496 return; 5497 } 5498 5499 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover", 5500 dev_pw_id); 5501 5502 p2p->go_intent = go_intent; 5503 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 5504 } 5505 5506 #endif /* CONFIG_WPS_NFC */ 5507 5508 5509 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len) 5510 { 5511 if (len < 8 || len > 63) 5512 return -1; 5513 p2p->cfg->passphrase_len = len; 5514 return 0; 5515 } 5516 5517 5518 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem) 5519 { 5520 p2p->vendor_elem = vendor_elem; 5521 } 5522 5523 5524 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx) 5525 { 5526 struct p2p_data *p2p = eloop_ctx; 5527 5528 p2p_dbg(p2p, 5529 "Timeout on waiting peer to become ready for GO Negotiation"); 5530 p2p_go_neg_failed(p2p, -1); 5531 } 5532 5533 5534 void p2p_set_own_pref_freq_list(struct p2p_data *p2p, 5535 const unsigned int *pref_freq_list, 5536 unsigned int size) 5537 { 5538 unsigned int i; 5539 5540 if (size > P2P_MAX_PREF_CHANNELS) 5541 size = P2P_MAX_PREF_CHANNELS; 5542 p2p->num_pref_freq = size; 5543 for (i = 0; i < size; i++) { 5544 p2p->pref_freq_list[i] = pref_freq_list[i]; 5545 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz", 5546 i, p2p->pref_freq_list[i]); 5547 } 5548 } 5549 5550 5551 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class, 5552 u8 chan) 5553 { 5554 p2p->override_pref_op_class = op_class; 5555 p2p->override_pref_channel = chan; 5556 } 5557 5558 5559 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p, 5560 unsigned int freq) 5561 { 5562 struct wpabuf *ies, *buf; 5563 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 5564 int ret; 5565 5566 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 5567 if (!ies) { 5568 wpa_printf(MSG_ERROR, 5569 "CTRL: Failed to build Probe Response IEs"); 5570 return NULL; 5571 } 5572 5573 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 5574 if (!buf) { 5575 wpabuf_free(ies); 5576 return NULL; 5577 } 5578 5579 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq); 5580 wpabuf_free(ies); 5581 if (ret) { 5582 wpabuf_free(buf); 5583 return NULL; 5584 } 5585 5586 return buf; 5587 } 5588 5589 5590 bool p2p_is_peer_6ghz_capab(struct p2p_data *p2p, const u8 *addr) 5591 { 5592 struct p2p_device *dev; 5593 5594 dev = p2p_get_device(p2p, addr); 5595 if (!dev) 5596 return false; 5597 5598 return !!(dev->info.dev_capab & P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE); 5599 } 5600 5601 5602 void p2p_set_6ghz_dev_capab(struct p2p_data *p2p, bool allow_6ghz) 5603 { 5604 p2p->p2p_6ghz_capable = allow_6ghz; 5605 p2p->allow_6ghz = allow_6ghz; 5606 p2p_dbg(p2p, "Set 6 GHz capability to %d", allow_6ghz); 5607 5608 if (allow_6ghz) 5609 p2p->dev_capab |= P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE; 5610 else 5611 p2p->dev_capab &= ~P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE; 5612 } 5613 5614 5615 bool is_p2p_6ghz_capable(struct p2p_data *p2p) 5616 { 5617 return p2p->p2p_6ghz_capable; 5618 } 5619 5620 5621 bool p2p_wfd_enabled(struct p2p_data *p2p) 5622 { 5623 #ifdef CONFIG_WIFI_DISPLAY 5624 return p2p->wfd_ie_probe_req != NULL; 5625 #else /* CONFIG_WIFI_DISPLAY */ 5626 return false; 5627 #endif /* CONFIG_WIFI_DISPLAY */ 5628 } 5629 5630 5631 bool p2p_peer_wfd_enabled(struct p2p_data *p2p, const u8 *peer_addr) 5632 { 5633 #ifdef CONFIG_WIFI_DISPLAY 5634 struct p2p_device *dev; 5635 5636 dev = p2p_get_device(p2p, peer_addr); 5637 return dev && dev->info.wfd_subelems != NULL; 5638 #else /* CONFIG_WIFI_DISPLAY */ 5639 return false; 5640 #endif /* CONFIG_WIFI_DISPLAY */ 5641 } 5642 5643 5644 bool is_p2p_allow_6ghz(struct p2p_data *p2p) 5645 { 5646 return p2p->allow_6ghz; 5647 } 5648 5649 5650 void set_p2p_allow_6ghz(struct p2p_data *p2p, bool value) 5651 { 5652 p2p->allow_6ghz = value; 5653 } 5654