p2p.c revision 8c65289885e84727226d81b3d32856f79c31ee5f
1/* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "includes.h" 10 11#include "common.h" 12#include "eloop.h" 13#include "common/ieee802_11_defs.h" 14#include "common/ieee802_11_common.h" 15#include "common/wpa_ctrl.h" 16#include "wps/wps_i.h" 17#include "p2p_i.h" 18#include "p2p.h" 19 20 21static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 22static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 23static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 24 const u8 *sa, const u8 *data, size_t len, 25 int rx_freq); 26static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 27 const u8 *sa, const u8 *data, 28 size_t len); 29static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 30static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 31 32 33/* 34 * p2p_scan recovery timeout 35 * 36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 37 * timeout for this to avoid hitting P2P timeout unnecessarily. 38 */ 39#define P2P_SCAN_TIMEOUT 35 40 41/** 42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 43 * entries will be removed 44 */ 45#ifdef ANDROID_P2P 46#define P2P_PEER_EXPIRATION_AGE 30 47#else 48#define P2P_PEER_EXPIRATION_AGE 300 49#endif 50 51#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2) 52 53#ifdef ANDROID_P2P 54int p2p_connection_in_progress(struct p2p_data *p2p) 55{ 56 int ret = 0; 57 58 switch (p2p->state) { 59 case P2P_CONNECT: 60 case P2P_CONNECT_LISTEN: 61 case P2P_GO_NEG: 62 case P2P_WAIT_PEER_CONNECT: 63 case P2P_WAIT_PEER_IDLE: 64 case P2P_PROVISIONING: 65 case P2P_INVITE: 66 case P2P_INVITE_LISTEN: 67 ret = 1; 68 break; 69 70 default: 71 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state); 72 ret = 0; 73 } 74 75 return ret; 76} 77#endif 78 79static void p2p_expire_peers(struct p2p_data *p2p) 80{ 81 struct p2p_device *dev, *n; 82 struct os_time now; 83 size_t i; 84 85 os_get_time(&now); 86 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 87 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 88 continue; 89 90 if (p2p->cfg->go_connected && 91 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 92 dev->info.p2p_device_addr)) { 93 /* 94 * We are connected as a client to a group in which the 95 * peer is the GO, so do not expire the peer entry. 96 */ 97 os_get_time(&dev->last_seen); 98 continue; 99 } 100 101 for (i = 0; i < p2p->num_groups; i++) { 102 if (p2p_group_is_client_connected( 103 p2p->groups[i], dev->info.p2p_device_addr)) 104 break; 105 } 106 if (i < p2p->num_groups) { 107 /* 108 * The peer is connected as a client in a group where 109 * we are the GO, so do not expire the peer entry. 110 */ 111 os_get_time(&dev->last_seen); 112 continue; 113 } 114 115#ifdef ANDROID_P2P 116 /* If Connection is in progress, don't expire the peer 117 */ 118 if (p2p_connection_in_progress(p2p)) 119 continue; 120#endif 121 122 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer " 123 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr)); 124#ifdef ANDROID_P2P 125 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 126 if(&dev->list == p2p->sd_dev_list) 127 p2p->sd_dev_list = dev->list.next; 128#endif 129 dl_list_del(&dev->list); 130 p2p_device_free(p2p, dev); 131 } 132} 133 134 135static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx) 136{ 137 struct p2p_data *p2p = eloop_ctx; 138 p2p_expire_peers(p2p); 139 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 140 p2p_expiration_timeout, p2p, NULL); 141} 142 143 144static const char * p2p_state_txt(int state) 145{ 146 switch (state) { 147 case P2P_IDLE: 148 return "IDLE"; 149 case P2P_SEARCH: 150 return "SEARCH"; 151 case P2P_CONNECT: 152 return "CONNECT"; 153 case P2P_CONNECT_LISTEN: 154 return "CONNECT_LISTEN"; 155 case P2P_GO_NEG: 156 return "GO_NEG"; 157 case P2P_LISTEN_ONLY: 158 return "LISTEN_ONLY"; 159 case P2P_WAIT_PEER_CONNECT: 160 return "WAIT_PEER_CONNECT"; 161 case P2P_WAIT_PEER_IDLE: 162 return "WAIT_PEER_IDLE"; 163 case P2P_SD_DURING_FIND: 164 return "SD_DURING_FIND"; 165 case P2P_PROVISIONING: 166 return "PROVISIONING"; 167 case P2P_PD_DURING_FIND: 168 return "PD_DURING_FIND"; 169 case P2P_INVITE: 170 return "INVITE"; 171 case P2P_INVITE_LISTEN: 172 return "INVITE_LISTEN"; 173 case P2P_SEARCH_WHEN_READY: 174 return "SEARCH_WHEN_READY"; 175 case P2P_CONTINUE_SEARCH_WHEN_READY: 176 return "CONTINUE_SEARCH_WHEN_READY"; 177 default: 178 return "?"; 179 } 180} 181 182 183u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 184{ 185 struct p2p_device *dev = NULL; 186 187 if (!addr || !p2p) 188 return 0; 189 190 dev = p2p_get_device(p2p, addr); 191 if (dev) 192 return dev->wps_prov_info; 193 else 194 return 0; 195} 196 197 198void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 199{ 200 struct p2p_device *dev = NULL; 201 202 if (!addr || !p2p) 203 return; 204 205 dev = p2p_get_device(p2p, addr); 206 if (dev) 207 dev->wps_prov_info = 0; 208} 209 210 211void p2p_set_state(struct p2p_data *p2p, int new_state) 212{ 213 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s", 214 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 215 p2p->state = new_state; 216} 217 218 219void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 220{ 221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 222 "P2P: Set timeout (state=%s): %u.%06u sec", 223 p2p_state_txt(p2p->state), sec, usec); 224 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 225 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 226} 227 228 229void p2p_clear_timeout(struct p2p_data *p2p) 230{ 231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)", 232 p2p_state_txt(p2p->state)); 233 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 234} 235 236 237void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, 238 int status) 239{ 240 struct p2p_go_neg_results res; 241 p2p_clear_timeout(p2p); 242 p2p_set_state(p2p, P2P_IDLE); 243 if (p2p->go_neg_peer) { 244 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 245 p2p->go_neg_peer->wps_method = WPS_NOT_READY; 246 } 247 p2p->go_neg_peer = NULL; 248 249 os_memset(&res, 0, sizeof(res)); 250 res.status = status; 251 if (peer) { 252 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 253 ETH_ALEN); 254 os_memcpy(res.peer_interface_addr, peer->intended_addr, 255 ETH_ALEN); 256 } 257 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 258} 259 260 261static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 262{ 263 unsigned int r, tu; 264 int freq; 265 struct wpabuf *ies; 266 267 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 268 "P2P: Starting short listen state (state=%s)", 269 p2p_state_txt(p2p->state)); 270 271 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 272 p2p->cfg->channel); 273 if (freq < 0) { 274 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 275 "P2P: Unknown regulatory class/channel"); 276 return; 277 } 278 279 os_get_random((u8 *) &r, sizeof(r)); 280 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 281 p2p->min_disc_int) * 100; 282 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 283 tu = p2p->max_disc_tu; 284 if (!dev_disc && tu < 100) 285 tu = 100; /* Need to wait in non-device discovery use cases */ 286 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 287 tu = p2p->cfg->max_listen * 1000 / 1024; 288 289 if (tu == 0) { 290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip listen state " 291 "since duration was 0 TU"); 292 p2p_set_timeout(p2p, 0, 0); 293 return; 294 } 295 296 p2p->pending_listen_freq = freq; 297 p2p->pending_listen_sec = 0; 298 p2p->pending_listen_usec = 1024 * tu; 299 300 ies = p2p_build_probe_resp_ies(p2p); 301 if (ies == NULL) 302 return; 303 304 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 305 ies) < 0) { 306 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 307 "P2P: Failed to start listen mode"); 308 p2p->pending_listen_freq = 0; 309 } 310 wpabuf_free(ies); 311} 312 313 314int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 315{ 316 int freq; 317 struct wpabuf *ies; 318 319 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 320 "P2P: Going to listen(only) state"); 321 322 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 323 p2p->cfg->channel); 324 if (freq < 0) { 325 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 326 "P2P: Unknown regulatory class/channel"); 327 return -1; 328 } 329 330 p2p->pending_listen_freq = freq; 331 p2p->pending_listen_sec = timeout / 1000; 332 p2p->pending_listen_usec = (timeout % 1000) * 1000; 333 334 if (p2p->p2p_scan_running) { 335 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 336 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 337 "P2P: p2p_scan running - connect is already " 338 "pending - skip listen"); 339 return 0; 340 } 341 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 342 "P2P: p2p_scan running - delay start of listen state"); 343 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 344 return 0; 345 } 346 347 ies = p2p_build_probe_resp_ies(p2p); 348 if (ies == NULL) 349 return -1; 350 351 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 352 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 353 "P2P: Failed to start listen mode"); 354 p2p->pending_listen_freq = 0; 355 wpabuf_free(ies); 356 return -1; 357 } 358 wpabuf_free(ies); 359 360 p2p_set_state(p2p, P2P_LISTEN_ONLY); 361 362 return 0; 363} 364 365 366static void p2p_device_clear_reported(struct p2p_data *p2p) 367{ 368 struct p2p_device *dev; 369 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 370 dev->flags &= ~P2P_DEV_REPORTED; 371} 372 373 374/** 375 * p2p_get_device - Fetch a peer entry 376 * @p2p: P2P module context from p2p_init() 377 * @addr: P2P Device Address of the peer 378 * Returns: Pointer to the device entry or %NULL if not found 379 */ 380struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 381{ 382 struct p2p_device *dev; 383 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 384 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 385 return dev; 386 } 387 return NULL; 388} 389 390 391/** 392 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 393 * @p2p: P2P module context from p2p_init() 394 * @addr: P2P Interface Address of the peer 395 * Returns: Pointer to the device entry or %NULL if not found 396 */ 397struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 398 const u8 *addr) 399{ 400 struct p2p_device *dev; 401 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 402 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 403 return dev; 404 } 405 return NULL; 406} 407 408 409/** 410 * p2p_create_device - Create a peer entry 411 * @p2p: P2P module context from p2p_init() 412 * @addr: P2P Device Address of the peer 413 * Returns: Pointer to the device entry or %NULL on failure 414 * 415 * If there is already an entry for the peer, it will be returned instead of 416 * creating a new one. 417 */ 418static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 419 const u8 *addr) 420{ 421 struct p2p_device *dev, *oldest = NULL; 422 size_t count = 0; 423 424 dev = p2p_get_device(p2p, addr); 425 if (dev) 426 return dev; 427 428 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 429 count++; 430 if (oldest == NULL || 431 os_time_before(&dev->last_seen, &oldest->last_seen)) 432 oldest = dev; 433 } 434 if (count + 1 > p2p->cfg->max_peers && oldest) { 435 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 436 "P2P: Remove oldest peer entry to make room for a new " 437 "peer"); 438#ifdef ANDROID_P2P 439 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 440 if(&oldest->list == p2p->sd_dev_list) 441 p2p->sd_dev_list = oldest->list.next; 442#endif 443 dl_list_del(&oldest->list); 444 p2p_device_free(p2p, oldest); 445 } 446 447 dev = os_zalloc(sizeof(*dev)); 448 if (dev == NULL) 449 return NULL; 450 dl_list_add(&p2p->devices, &dev->list); 451 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 452 453 return dev; 454} 455 456 457static void p2p_copy_client_info(struct p2p_device *dev, 458 struct p2p_client_info *cli) 459{ 460 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 461 dev->info.device_name[cli->dev_name_len] = '\0'; 462 dev->info.dev_capab = cli->dev_capab; 463 dev->info.config_methods = cli->config_methods; 464 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 465 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 466 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 467 dev->info.wps_sec_dev_type_list_len); 468} 469 470 471static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 472 const u8 *go_interface_addr, int freq, 473 const u8 *gi, size_t gi_len) 474{ 475 struct p2p_group_info info; 476 size_t c; 477 struct p2p_device *dev; 478 479 if (gi == NULL) 480 return 0; 481 482 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 483 return -1; 484 485 /* 486 * Clear old data for this group; if the devices are still in the 487 * group, the information will be restored in the loop following this. 488 */ 489 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 490 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 491 ETH_ALEN) == 0) { 492 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 493 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 494 } 495 } 496 497 for (c = 0; c < info.num_clients; c++) { 498 struct p2p_client_info *cli = &info.client[c]; 499 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 500 ETH_ALEN) == 0) 501 continue; /* ignore our own entry */ 502 dev = p2p_get_device(p2p, cli->p2p_device_addr); 503 if (dev) { 504 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 505 P2P_DEV_PROBE_REQ_ONLY)) { 506 /* 507 * Update information since we have not 508 * received this directly from the client. 509 */ 510 p2p_copy_client_info(dev, cli); 511 } else { 512 /* 513 * Need to update P2P Client Discoverability 514 * flag since it is valid only in P2P Group 515 * Info attribute. 516 */ 517 dev->info.dev_capab &= 518 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 519 dev->info.dev_capab |= 520 cli->dev_capab & 521 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 522 } 523 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 524 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 525 } 526 } else { 527 dev = p2p_create_device(p2p, cli->p2p_device_addr); 528 if (dev == NULL) 529 continue; 530 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 531 p2p_copy_client_info(dev, cli); 532 dev->oper_freq = freq; 533 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 534 dev->info.p2p_device_addr, 535 &dev->info, 1); 536 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 537 } 538 539 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 540 ETH_ALEN); 541 os_get_time(&dev->last_seen); 542 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 543 os_memcpy(dev->member_in_go_iface, go_interface_addr, 544 ETH_ALEN); 545 } 546 547 return 0; 548} 549 550 551static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req, 552 const struct p2p_message *msg) 553{ 554 os_memcpy(dev->info.device_name, msg->device_name, 555 sizeof(dev->info.device_name)); 556 557 if (msg->manufacturer && 558 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 559 os_memset(dev->info.manufacturer, 0, 560 sizeof(dev->info.manufacturer)); 561 os_memcpy(dev->info.manufacturer, msg->manufacturer, 562 msg->manufacturer_len); 563 } 564 565 if (msg->model_name && 566 msg->model_name_len < sizeof(dev->info.model_name)) { 567 os_memset(dev->info.model_name, 0, 568 sizeof(dev->info.model_name)); 569 os_memcpy(dev->info.model_name, msg->model_name, 570 msg->model_name_len); 571 } 572 573 if (msg->model_number && 574 msg->model_number_len < sizeof(dev->info.model_number)) { 575 os_memset(dev->info.model_number, 0, 576 sizeof(dev->info.model_number)); 577 os_memcpy(dev->info.model_number, msg->model_number, 578 msg->model_number_len); 579 } 580 581 if (msg->serial_number && 582 msg->serial_number_len < sizeof(dev->info.serial_number)) { 583 os_memset(dev->info.serial_number, 0, 584 sizeof(dev->info.serial_number)); 585 os_memcpy(dev->info.serial_number, msg->serial_number, 586 msg->serial_number_len); 587 } 588 589 if (msg->pri_dev_type) 590 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 591 sizeof(dev->info.pri_dev_type)); 592 else if (msg->wps_pri_dev_type) 593 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 594 sizeof(dev->info.pri_dev_type)); 595 596 if (msg->wps_sec_dev_type_list) { 597 os_memcpy(dev->info.wps_sec_dev_type_list, 598 msg->wps_sec_dev_type_list, 599 msg->wps_sec_dev_type_list_len); 600 dev->info.wps_sec_dev_type_list_len = 601 msg->wps_sec_dev_type_list_len; 602 } 603 604 if (msg->capability) { 605 /* 606 * P2P Client Discoverability bit is reserved in all frames 607 * that use this function, so do not change its value here. 608 */ 609 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 610 dev->info.dev_capab |= msg->capability[0] & 611 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 612 dev->info.group_capab = msg->capability[1]; 613 } 614 615 if (msg->ext_listen_timing) { 616 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 617 dev->ext_listen_interval = 618 WPA_GET_LE16(msg->ext_listen_timing + 2); 619 } 620 621 if (!probe_req) { 622 u16 new_config_methods; 623 new_config_methods = msg->config_methods ? 624 msg->config_methods : msg->wps_config_methods; 625 if (new_config_methods && 626 dev->info.config_methods != new_config_methods) { 627 wpa_printf(MSG_DEBUG, "P2P: Update peer " MACSTR 628 " config_methods 0x%x -> 0x%x", 629 MAC2STR(dev->info.p2p_device_addr), 630 dev->info.config_methods, 631 new_config_methods); 632 dev->info.config_methods = new_config_methods; 633 } 634 } 635} 636 637 638/** 639 * p2p_add_device - Add peer entries based on scan results or P2P frames 640 * @p2p: P2P module context from p2p_init() 641 * @addr: Source address of Beacon or Probe Response frame (may be either 642 * P2P Device Address or P2P Interface Address) 643 * @level: Signal level (signal strength of the received frame from the peer) 644 * @freq: Frequency on which the Beacon or Probe Response frame was received 645 * @rx_time: Time when the result was received 646 * @ies: IEs from the Beacon or Probe Response frame 647 * @ies_len: Length of ies buffer in octets 648 * @scan_res: Whether this was based on scan results 649 * Returns: 0 on success, -1 on failure 650 * 651 * If the scan result is for a GO, the clients in the group will also be added 652 * to the peer table. This function can also be used with some other frames 653 * like Provision Discovery Request that contains P2P Capability and P2P Device 654 * Info attributes. 655 */ 656int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 657 struct os_time *rx_time, int level, const u8 *ies, 658 size_t ies_len, int scan_res) 659{ 660 struct p2p_device *dev; 661 struct p2p_message msg; 662 const u8 *p2p_dev_addr; 663 int i; 664 struct os_time time_now; 665 666 os_memset(&msg, 0, sizeof(msg)); 667 if (p2p_parse_ies(ies, ies_len, &msg)) { 668 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 669 "P2P: Failed to parse P2P IE for a device entry"); 670 p2p_parse_free(&msg); 671 return -1; 672 } 673 674 if (msg.p2p_device_addr) 675 p2p_dev_addr = msg.p2p_device_addr; 676 else if (msg.device_id) 677 p2p_dev_addr = msg.device_id; 678 else { 679 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 680 "P2P: Ignore scan data without P2P Device Info or " 681 "P2P Device Id"); 682 p2p_parse_free(&msg); 683 return -1; 684 } 685 686 if (!is_zero_ether_addr(p2p->peer_filter) && 687 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 688 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer " 689 "filter for " MACSTR " due to peer filter", 690 MAC2STR(p2p_dev_addr)); 691 p2p_parse_free(&msg); 692 return 0; 693 } 694 695 dev = p2p_create_device(p2p, p2p_dev_addr); 696 if (dev == NULL) { 697 p2p_parse_free(&msg); 698 return -1; 699 } 700 701 if (rx_time == NULL) { 702 os_get_time(&time_now); 703 rx_time = &time_now; 704 } 705 706 /* 707 * Update the device entry only if the new peer 708 * entry is newer than the one previously stored. 709 */ 710 if (dev->last_seen.sec > 0 && 711 os_time_before(rx_time, &dev->last_seen)) { 712 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not update peer " 713 "entry based on old frame (rx_time=%u.%06u " 714 "last_seen=%u.%06u)", 715 (unsigned int) rx_time->sec, 716 (unsigned int) rx_time->usec, 717 (unsigned int) dev->last_seen.sec, 718 (unsigned int) dev->last_seen.usec); 719 p2p_parse_free(&msg); 720 return -1; 721 } 722 723 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_time)); 724 725 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 726 727 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 728 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 729 if (msg.ssid && 730 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 731 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 732 != 0)) { 733 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 734 dev->oper_ssid_len = msg.ssid[1]; 735 } 736 737 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 738 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 739 int ds_freq; 740 if (*msg.ds_params == 14) 741 ds_freq = 2484; 742 else 743 ds_freq = 2407 + *msg.ds_params * 5; 744 if (freq != ds_freq) { 745 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 746 "P2P: Update Listen frequency based on DS " 747 "Parameter Set IE: %d -> %d MHz", 748 freq, ds_freq); 749 freq = ds_freq; 750 } 751 } 752 753 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 754 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 755 "P2P: Update Listen frequency based on scan " 756 "results (" MACSTR " %d -> %d MHz (DS param %d)", 757 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 758 freq, msg.ds_params ? *msg.ds_params : -1); 759 } 760 if (scan_res) { 761 dev->listen_freq = freq; 762 if (msg.group_info) 763 dev->oper_freq = freq; 764 } 765 dev->info.level = level; 766 767 p2p_copy_wps_info(dev, 0, &msg); 768 769 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 770 wpabuf_free(dev->info.wps_vendor_ext[i]); 771 dev->info.wps_vendor_ext[i] = NULL; 772 } 773 774 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 775 if (msg.wps_vendor_ext[i] == NULL) 776 break; 777 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 778 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 779 if (dev->info.wps_vendor_ext[i] == NULL) 780 break; 781 } 782 783 if (msg.wfd_subelems) { 784 wpabuf_free(dev->info.wfd_subelems); 785 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 786 } 787 788 if (scan_res) { 789 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 790 msg.group_info, msg.group_info_len); 791 } 792 793 p2p_parse_free(&msg); 794 795 if (p2p_pending_sd_req(p2p, dev)) 796 dev->flags |= P2P_DEV_SD_SCHEDULE; 797 798 if (dev->flags & P2P_DEV_REPORTED) 799 return 0; 800 801 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 802 "P2P: Peer found with Listen frequency %d MHz " 803 "(rx_time=%u.%06u)", freq, (unsigned int) rx_time->sec, 804 (unsigned int) rx_time->usec); 805 if (dev->flags & P2P_DEV_USER_REJECTED) { 806 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 807 "P2P: Do not report rejected device"); 808 return 0; 809 } 810 811 if (dev->info.config_methods == 0 && 812 (freq == 2412 || freq == 2437 || freq == 2462)) { 813 /* 814 * If we have only seen a Beacon frame from a GO, we do not yet 815 * know what WPS config methods it supports. Since some 816 * applications use config_methods value from P2P-DEVICE-FOUND 817 * events, postpone reporting this peer until we've fully 818 * discovered its capabilities. 819 * 820 * At least for now, do this only if the peer was detected on 821 * one of the social channels since that peer can be easily be 822 * found again and there are no limitations of having to use 823 * passive scan on this channels, so this can be done through 824 * Probe Response frame that includes the config_methods 825 * information. 826 */ 827 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 828 "P2P: Do not report peer " MACSTR " with unknown " 829 "config methods", MAC2STR(addr)); 830 return 0; 831 } 832 833 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 834 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 835 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 836 837 return 0; 838} 839 840 841static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 842{ 843 int i; 844 845 if (p2p->go_neg_peer == dev) { 846 /* 847 * If GO Negotiation is in progress, report that it has failed. 848 */ 849 p2p_go_neg_failed(p2p, dev, -1); 850 p2p->go_neg_peer = NULL; 851 } 852 if (p2p->invite_peer == dev) 853 p2p->invite_peer = NULL; 854 if (p2p->sd_peer == dev) 855 p2p->sd_peer = NULL; 856 if (p2p->pending_client_disc_go == dev) 857 p2p->pending_client_disc_go = NULL; 858 859 /* dev_lost() device, but only if it was previously dev_found() */ 860 if (dev->flags & P2P_DEV_REPORTED_ONCE) 861 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 862 dev->info.p2p_device_addr); 863 864 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 865 wpabuf_free(dev->info.wps_vendor_ext[i]); 866 dev->info.wps_vendor_ext[i] = NULL; 867 } 868 869 wpabuf_free(dev->info.wfd_subelems); 870 871 os_free(dev); 872} 873 874 875static int p2p_get_next_prog_freq(struct p2p_data *p2p) 876{ 877 struct p2p_channels *c; 878 struct p2p_reg_class *cla; 879 size_t cl, ch; 880 int found = 0; 881 u8 reg_class; 882 u8 channel; 883 int freq; 884 885 c = &p2p->cfg->channels; 886 for (cl = 0; cl < c->reg_classes; cl++) { 887 cla = &c->reg_class[cl]; 888 if (cla->reg_class != p2p->last_prog_scan_class) 889 continue; 890 for (ch = 0; ch < cla->channels; ch++) { 891 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 892 found = 1; 893 break; 894 } 895 } 896 if (found) 897 break; 898 } 899 900 if (!found) { 901 /* Start from beginning */ 902 reg_class = c->reg_class[0].reg_class; 903 channel = c->reg_class[0].channel[0]; 904 } else { 905 /* Pick the next channel */ 906 ch++; 907 if (ch == cla->channels) { 908 cl++; 909 if (cl == c->reg_classes) 910 cl = 0; 911 ch = 0; 912 } 913 reg_class = c->reg_class[cl].reg_class; 914 channel = c->reg_class[cl].channel[ch]; 915 } 916 917 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel); 918 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search " 919 "channel: reg_class %u channel %u -> %d MHz", 920 reg_class, channel, freq); 921 p2p->last_prog_scan_class = reg_class; 922 p2p->last_prog_scan_chan = channel; 923 924 if (freq == 2412 || freq == 2437 || freq == 2462) 925 return 0; /* No need to add social channels */ 926 return freq; 927} 928 929 930static void p2p_search(struct p2p_data *p2p) 931{ 932 int freq = 0; 933 enum p2p_scan_type type; 934 u16 pw_id = DEV_PW_DEFAULT; 935 int res; 936 937 if (p2p->drv_in_listen) { 938 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still " 939 "in Listen state - wait for it to end before " 940 "continuing"); 941 return; 942 } 943 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 944 945 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 946 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 947 type = P2P_SCAN_SOCIAL_PLUS_ONE; 948 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search " 949 "(+ freq %u)", freq); 950 } else { 951 type = P2P_SCAN_SOCIAL; 952 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search"); 953 } 954 955 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 956 p2p->num_req_dev_types, p2p->req_dev_types, 957 p2p->find_dev_id, pw_id); 958 if (res < 0) { 959 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 960 "P2P: Scan request failed"); 961 p2p_continue_find(p2p); 962 } else if (res == 1) { 963 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 964 "p2p_scan at this point - will try again after " 965 "previous scan completes"); 966 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 967 } else { 968 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 969 p2p->p2p_scan_running = 1; 970 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 971 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 972 p2p, NULL); 973 } 974} 975 976 977static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 978{ 979 struct p2p_data *p2p = eloop_ctx; 980 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop"); 981 p2p_stop_find(p2p); 982} 983 984 985static int p2p_run_after_scan(struct p2p_data *p2p) 986{ 987 struct p2p_device *dev; 988 enum p2p_after_scan op; 989 990 if (p2p->after_scan_tx) { 991 /* TODO: schedule p2p_run_after_scan to be called from TX 992 * status callback(?) */ 993 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending " 994 "Action frame at p2p_scan completion"); 995 p2p->cfg->send_action(p2p->cfg->cb_ctx, 996 p2p->after_scan_tx->freq, 997 p2p->after_scan_tx->dst, 998 p2p->after_scan_tx->src, 999 p2p->after_scan_tx->bssid, 1000 (u8 *) (p2p->after_scan_tx + 1), 1001 p2p->after_scan_tx->len, 1002 p2p->after_scan_tx->wait_time); 1003 os_free(p2p->after_scan_tx); 1004 p2p->after_scan_tx = NULL; 1005#ifdef ANDROID_P2P 1006 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 1007 * At that moment, we will send the SD response from this context. After sending the SD response, 1008 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 1009 */ 1010 return 0; 1011#else 1012 return 1; 1013#endif 1014 } 1015 1016 op = p2p->start_after_scan; 1017 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1018 switch (op) { 1019 case P2P_AFTER_SCAN_NOTHING: 1020 break; 1021 case P2P_AFTER_SCAN_LISTEN: 1022 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 1023 "requested Listen state"); 1024 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 1025 p2p->pending_listen_usec / 1000); 1026 return 1; 1027 case P2P_AFTER_SCAN_CONNECT: 1028 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 1029 "requested connect with " MACSTR, 1030 MAC2STR(p2p->after_scan_peer)); 1031 dev = p2p_get_device(p2p, p2p->after_scan_peer); 1032 if (dev == NULL) { 1033 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not " 1034 "known anymore"); 1035 break; 1036 } 1037 p2p_connect_send(p2p, dev); 1038 return 1; 1039 } 1040 1041 return 0; 1042} 1043 1044 1045static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1046{ 1047 struct p2p_data *p2p = eloop_ctx; 1048 int running; 1049 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout " 1050 "(running=%d)", p2p->p2p_scan_running); 1051 running = p2p->p2p_scan_running; 1052 /* Make sure we recover from missed scan results callback */ 1053 p2p->p2p_scan_running = 0; 1054 1055 if (running) 1056 p2p_run_after_scan(p2p); 1057} 1058 1059 1060static void p2p_free_req_dev_types(struct p2p_data *p2p) 1061{ 1062 p2p->num_req_dev_types = 0; 1063 os_free(p2p->req_dev_types); 1064 p2p->req_dev_types = NULL; 1065} 1066 1067 1068int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1069 enum p2p_discovery_type type, 1070 unsigned int num_req_dev_types, const u8 *req_dev_types, 1071 const u8 *dev_id, unsigned int search_delay) 1072{ 1073 int res; 1074 1075 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)", 1076 type); 1077 os_get_time(&p2p->find_start); 1078 if (p2p->p2p_scan_running) { 1079 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is " 1080 "already running"); 1081 } 1082 1083 p2p_free_req_dev_types(p2p); 1084 if (req_dev_types && num_req_dev_types) { 1085 p2p->req_dev_types = os_malloc(num_req_dev_types * 1086 WPS_DEV_TYPE_LEN); 1087 if (p2p->req_dev_types == NULL) 1088 return -1; 1089 os_memcpy(p2p->req_dev_types, req_dev_types, 1090 num_req_dev_types * WPS_DEV_TYPE_LEN); 1091 p2p->num_req_dev_types = num_req_dev_types; 1092 } 1093 1094 if (dev_id) { 1095 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1096 p2p->find_dev_id = p2p->find_dev_id_buf; 1097 } else 1098 p2p->find_dev_id = NULL; 1099 1100 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1101 p2p_clear_timeout(p2p); 1102 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1103 p2p->find_type = type; 1104 p2p_device_clear_reported(p2p); 1105 p2p_set_state(p2p, P2P_SEARCH); 1106 p2p->search_delay = search_delay; 1107 p2p->in_search_delay = 0; 1108 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1109 p2p->last_p2p_find_timeout = timeout; 1110 if (timeout) 1111 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1112 p2p, NULL); 1113 switch (type) { 1114 case P2P_FIND_START_WITH_FULL: 1115 case P2P_FIND_PROGRESSIVE: 1116 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1117 p2p->num_req_dev_types, 1118 p2p->req_dev_types, dev_id, 1119 DEV_PW_DEFAULT); 1120 break; 1121 case P2P_FIND_ONLY_SOCIAL: 1122 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1123 p2p->num_req_dev_types, 1124 p2p->req_dev_types, dev_id, 1125 DEV_PW_DEFAULT); 1126 break; 1127 default: 1128 return -1; 1129 } 1130 1131 if (res == 0) { 1132 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 1133 p2p->p2p_scan_running = 1; 1134 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1135 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1136 p2p, NULL); 1137 } else if (res == 1) { 1138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 1139 "p2p_scan at this point - will try again after " 1140 "previous scan completes"); 1141 res = 0; 1142 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1143 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1144 } else { 1145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 1146 "p2p_scan"); 1147 p2p_set_state(p2p, P2P_IDLE); 1148 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1149 } 1150 1151 return res; 1152} 1153 1154#ifdef ANDROID_P2P 1155int p2p_search_pending(struct p2p_data *p2p) 1156{ 1157 if(p2p == NULL) 1158 return 0; 1159 1160 if(p2p->state == P2P_SEARCH_WHEN_READY) 1161 return 1; 1162 1163 return 0; 1164} 1165#endif 1166 1167int p2p_other_scan_completed(struct p2p_data *p2p) 1168{ 1169 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1170 p2p_set_state(p2p, P2P_SEARCH); 1171 p2p_search(p2p); 1172 return 1; 1173 } 1174 if (p2p->state != P2P_SEARCH_WHEN_READY) 1175 return 0; 1176 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find " 1177 "now that previous scan was completed"); 1178 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1179 p2p->num_req_dev_types, p2p->req_dev_types, 1180 p2p->find_dev_id, p2p->search_delay) < 0) { 1181 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1182 return 0; 1183 } 1184 return 1; 1185} 1186 1187 1188void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1189{ 1190 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find"); 1191 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1192 p2p_clear_timeout(p2p); 1193 if (p2p->state == P2P_SEARCH || 1194 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY || 1195 p2p->state == P2P_SEARCH_WHEN_READY) 1196 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1197 p2p_set_state(p2p, P2P_IDLE); 1198 p2p_free_req_dev_types(p2p); 1199 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1200 if (p2p->go_neg_peer) 1201 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1202 p2p->go_neg_peer = NULL; 1203 p2p->sd_peer = NULL; 1204 p2p->invite_peer = NULL; 1205 p2p_stop_listen_for_freq(p2p, freq); 1206} 1207 1208 1209void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1210{ 1211 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen " 1213 "since we are on correct channel for response"); 1214 return; 1215 } 1216 if (p2p->in_listen) { 1217 p2p->in_listen = 0; 1218 p2p_clear_timeout(p2p); 1219 } 1220 if (p2p->drv_in_listen) { 1221 /* 1222 * The driver may not deliver callback to p2p_listen_end() 1223 * when the operation gets canceled, so clear the internal 1224 * variable that is tracking driver state. 1225 */ 1226 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear " 1227 "drv_in_listen (%d)", p2p->drv_in_listen); 1228 p2p->drv_in_listen = 0; 1229 } 1230 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1231} 1232 1233 1234void p2p_stop_find(struct p2p_data *p2p) 1235{ 1236 p2p_stop_find_for_freq(p2p, 0); 1237} 1238 1239 1240static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1241 unsigned int force_freq, 1242 unsigned int pref_freq) 1243{ 1244 u8 op_class, op_channel; 1245 unsigned int freq = force_freq ? force_freq : pref_freq; 1246 1247 if (p2p_freq_to_channel(p2p->cfg->country, freq, 1248 &op_class, &op_channel) < 0) { 1249 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1250 "P2P: Unsupported frequency %u MHz", freq); 1251 return -1; 1252 } 1253 1254 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) { 1255 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1256 "P2P: Frequency %u MHz (oper_class %u channel %u) not " 1257 "allowed for P2P", freq, op_class, op_channel); 1258 return -1; 1259 } 1260 1261 p2p->op_reg_class = op_class; 1262 p2p->op_channel = op_channel; 1263 1264 if (force_freq) { 1265 p2p->channels.reg_classes = 1; 1266 p2p->channels.reg_class[0].channels = 1; 1267 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1268 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1269 } else { 1270 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1271 sizeof(struct p2p_channels)); 1272 } 1273 1274 return 0; 1275} 1276 1277 1278static void p2p_prepare_channel_best(struct p2p_data *p2p) 1279{ 1280 u8 op_class, op_channel; 1281 1282 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1283 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1284 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall, 1285 &op_class, &op_channel) == 0) { 1286 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best " 1287 "overall channel as operating channel preference"); 1288 p2p->op_reg_class = op_class; 1289 p2p->op_channel = op_channel; 1290 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1291 p2p_supported_freq(p2p, p2p->best_freq_5) && 1292 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 1293 &op_class, &op_channel) == 0) { 1294 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz " 1295 "channel as operating channel preference"); 1296 p2p->op_reg_class = op_class; 1297 p2p->op_channel = op_channel; 1298 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1299 p2p_supported_freq(p2p, p2p->best_freq_24) && 1300 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 1301 &op_class, &op_channel) == 0) { 1302 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 " 1303 "GHz channel as operating channel preference"); 1304 p2p->op_reg_class = op_class; 1305 p2p->op_channel = op_channel; 1306 } else { 1307 p2p->op_reg_class = p2p->cfg->op_reg_class; 1308 p2p->op_channel = p2p->cfg->op_channel; 1309 } 1310 1311 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1312 sizeof(struct p2p_channels)); 1313} 1314 1315 1316/** 1317 * p2p_prepare_channel - Select operating channel for GO Negotiation 1318 * @p2p: P2P module context from p2p_init() 1319 * @dev: Selected peer device 1320 * @force_freq: Forced frequency in MHz or 0 if not forced 1321 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1322 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1323 * 1324 * This function is used to do initial operating channel selection for GO 1325 * Negotiation prior to having received peer information. The selected channel 1326 * may be further optimized in p2p_reselect_channel() once the peer information 1327 * is available. 1328 */ 1329static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1330 unsigned int force_freq, unsigned int pref_freq) 1331{ 1332 if (force_freq || pref_freq) { 1333 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0) 1334 return -1; 1335 } else { 1336 p2p_prepare_channel_best(p2p); 1337 } 1338 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1339 "P2P: Own preference for operation channel: " 1340 "Operating Class %u Channel %u%s", 1341 p2p->op_reg_class, p2p->op_channel, 1342 force_freq ? " (forced)" : ""); 1343 1344 if (force_freq) 1345 dev->flags |= P2P_DEV_FORCE_FREQ; 1346 else 1347 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1348 1349 return 0; 1350} 1351 1352 1353static void p2p_set_dev_persistent(struct p2p_device *dev, 1354 int persistent_group) 1355{ 1356 switch (persistent_group) { 1357 case 0: 1358 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1359 P2P_DEV_PREFER_PERSISTENT_RECONN); 1360 break; 1361 case 1: 1362 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1363 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1364 break; 1365 case 2: 1366 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1367 P2P_DEV_PREFER_PERSISTENT_RECONN; 1368 break; 1369 } 1370} 1371 1372 1373int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1374 enum p2p_wps_method wps_method, 1375 int go_intent, const u8 *own_interface_addr, 1376 unsigned int force_freq, int persistent_group, 1377 const u8 *force_ssid, size_t force_ssid_len, 1378 int pd_before_go_neg, unsigned int pref_freq) 1379{ 1380 struct p2p_device *dev; 1381 1382 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1383 "P2P: Request to start group negotiation - peer=" MACSTR 1384 " GO Intent=%d Intended Interface Address=" MACSTR 1385 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1386 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1387 wps_method, persistent_group, pd_before_go_neg); 1388 1389 dev = p2p_get_device(p2p, peer_addr); 1390 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1391 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1392 "P2P: Cannot connect to unknown P2P Device " MACSTR, 1393 MAC2STR(peer_addr)); 1394 return -1; 1395 } 1396 1397 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1398 return -1; 1399 1400 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1401 if (!(dev->info.dev_capab & 1402 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1403 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1404 "P2P: Cannot connect to P2P Device " MACSTR 1405 " that is in a group and is not discoverable", 1406 MAC2STR(peer_addr)); 1407 return -1; 1408 } 1409 if (dev->oper_freq <= 0) { 1410 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1411 "P2P: Cannot connect to P2P Device " MACSTR 1412 " with incomplete information", 1413 MAC2STR(peer_addr)); 1414 return -1; 1415 } 1416 1417 /* 1418 * First, try to connect directly. If the peer does not 1419 * acknowledge frames, assume it is sleeping and use device 1420 * discoverability via the GO at that point. 1421 */ 1422 } 1423 1424 p2p->ssid_set = 0; 1425 if (force_ssid) { 1426 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1427 force_ssid, force_ssid_len); 1428 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1429 p2p->ssid_len = force_ssid_len; 1430 p2p->ssid_set = 1; 1431 } 1432 1433 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1434 dev->flags &= ~P2P_DEV_USER_REJECTED; 1435 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1436 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1437 if (pd_before_go_neg) 1438 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1439 else { 1440 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1441 /* 1442 * Assign dialog token and tie breaker here to use the same 1443 * values in each retry within the same GO Negotiation exchange. 1444 */ 1445 dev->dialog_token++; 1446 if (dev->dialog_token == 0) 1447 dev->dialog_token = 1; 1448 dev->tie_breaker = p2p->next_tie_breaker; 1449 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1450 } 1451 dev->connect_reqs = 0; 1452 dev->go_neg_req_sent = 0; 1453 dev->go_state = UNKNOWN_GO; 1454 p2p_set_dev_persistent(dev, persistent_group); 1455 p2p->go_intent = go_intent; 1456 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1457 1458 if (p2p->state != P2P_IDLE) 1459 p2p_stop_find(p2p); 1460 1461 if (p2p->after_scan_tx) { 1462 /* 1463 * We need to drop the pending frame to avoid issues with the 1464 * new GO Negotiation, e.g., when the pending frame was from a 1465 * previous attempt at starting a GO Negotiation. 1466 */ 1467 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 1468 "previous pending Action frame TX that was waiting " 1469 "for p2p_scan completion"); 1470 os_free(p2p->after_scan_tx); 1471 p2p->after_scan_tx = NULL; 1472 } 1473 1474 dev->wps_method = wps_method; 1475 dev->status = P2P_SC_SUCCESS; 1476 1477 if (p2p->p2p_scan_running) { 1478 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1479 "P2P: p2p_scan running - delay connect send"); 1480 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1481 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1482 return 0; 1483 } 1484 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1485 1486 return p2p_connect_send(p2p, dev); 1487} 1488 1489 1490int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1491 enum p2p_wps_method wps_method, 1492 int go_intent, const u8 *own_interface_addr, 1493 unsigned int force_freq, int persistent_group, 1494 const u8 *force_ssid, size_t force_ssid_len, 1495 unsigned int pref_freq) 1496{ 1497 struct p2p_device *dev; 1498 1499 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1500 "P2P: Request to authorize group negotiation - peer=" MACSTR 1501 " GO Intent=%d Intended Interface Address=" MACSTR 1502 " wps_method=%d persistent_group=%d", 1503 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1504 wps_method, persistent_group); 1505 1506 dev = p2p_get_device(p2p, peer_addr); 1507 if (dev == NULL) { 1508 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1509 "P2P: Cannot authorize unknown P2P Device " MACSTR, 1510 MAC2STR(peer_addr)); 1511 return -1; 1512 } 1513 1514 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1515 return -1; 1516 1517 p2p->ssid_set = 0; 1518 if (force_ssid) { 1519 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1520 force_ssid, force_ssid_len); 1521 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1522 p2p->ssid_len = force_ssid_len; 1523 p2p->ssid_set = 1; 1524 } 1525 1526 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1527 dev->flags &= ~P2P_DEV_USER_REJECTED; 1528 dev->go_neg_req_sent = 0; 1529 dev->go_state = UNKNOWN_GO; 1530 p2p_set_dev_persistent(dev, persistent_group); 1531 p2p->go_intent = go_intent; 1532 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1533 1534 dev->wps_method = wps_method; 1535 dev->status = P2P_SC_SUCCESS; 1536 1537 return 0; 1538} 1539 1540 1541void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1542 struct p2p_device *dev, struct p2p_message *msg) 1543{ 1544 os_get_time(&dev->last_seen); 1545 1546 p2p_copy_wps_info(dev, 0, msg); 1547 1548 if (msg->listen_channel) { 1549 int freq; 1550 freq = p2p_channel_to_freq((char *) msg->listen_channel, 1551 msg->listen_channel[3], 1552 msg->listen_channel[4]); 1553 if (freq < 0) { 1554 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1555 "P2P: Unknown peer Listen channel: " 1556 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1557 msg->listen_channel[0], 1558 msg->listen_channel[1], 1559 msg->listen_channel[2], 1560 msg->listen_channel[3], 1561 msg->listen_channel[4]); 1562 } else { 1563 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update " 1564 "peer " MACSTR " Listen channel: %u -> %u MHz", 1565 MAC2STR(dev->info.p2p_device_addr), 1566 dev->listen_freq, freq); 1567 dev->listen_freq = freq; 1568 } 1569 } 1570 1571 if (msg->wfd_subelems) { 1572 wpabuf_free(dev->info.wfd_subelems); 1573 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1574 } 1575 1576 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1577 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1578 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1579 "P2P: Completed device entry based on data from " 1580 "GO Negotiation Request"); 1581 } else { 1582 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1583 "P2P: Created device entry based on GO Neg Req: " 1584 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1585 "listen_freq=%d", 1586 MAC2STR(dev->info.p2p_device_addr), 1587 dev->info.dev_capab, dev->info.group_capab, 1588 dev->info.device_name, dev->listen_freq); 1589 } 1590 1591 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1592 1593 if (dev->flags & P2P_DEV_USER_REJECTED) { 1594 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1595 "P2P: Do not report rejected device"); 1596 return; 1597 } 1598 1599 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1600 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1601 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1602} 1603 1604 1605void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1606{ 1607 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1608 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1609 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1610 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1611 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1612} 1613 1614 1615int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1616{ 1617 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1618 p2p_random(params->passphrase, 8); 1619 return 0; 1620} 1621 1622 1623void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1624{ 1625 struct p2p_go_neg_results res; 1626 int go = peer->go_state == LOCAL_GO; 1627 struct p2p_channels intersection; 1628 int freqs; 1629 size_t i, j; 1630 1631 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1632 "P2P: GO Negotiation with " MACSTR " completed (%s will be " 1633 "GO)", MAC2STR(peer->info.p2p_device_addr), 1634 go ? "local end" : "peer"); 1635 1636 os_memset(&res, 0, sizeof(res)); 1637 res.role_go = go; 1638 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1639 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1640 res.wps_method = peer->wps_method; 1641 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1642 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1643 res.persistent_group = 2; 1644 else 1645 res.persistent_group = 1; 1646 } 1647 1648 if (go) { 1649 /* Setup AP mode for WPS provisioning */ 1650 res.freq = p2p_channel_to_freq(p2p->cfg->country, 1651 p2p->op_reg_class, 1652 p2p->op_channel); 1653 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1654 res.ssid_len = p2p->ssid_len; 1655 p2p_random(res.passphrase, 8); 1656 } else { 1657 res.freq = peer->oper_freq; 1658 if (p2p->ssid_len) { 1659 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1660 res.ssid_len = p2p->ssid_len; 1661 } 1662 } 1663 1664 p2p_channels_intersect(&p2p->channels, &peer->channels, 1665 &intersection); 1666 freqs = 0; 1667 for (i = 0; i < intersection.reg_classes; i++) { 1668 struct p2p_reg_class *c = &intersection.reg_class[i]; 1669 if (freqs + 1 == P2P_MAX_CHANNELS) 1670 break; 1671 for (j = 0; j < c->channels; j++) { 1672 int freq; 1673 if (freqs + 1 == P2P_MAX_CHANNELS) 1674 break; 1675 freq = p2p_channel_to_freq(peer->country, c->reg_class, 1676 c->channel[j]); 1677 if (freq < 0) 1678 continue; 1679 res.freq_list[freqs++] = freq; 1680 } 1681 } 1682 1683 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1684 1685 p2p_clear_timeout(p2p); 1686 p2p->ssid_set = 0; 1687 peer->go_neg_req_sent = 0; 1688 peer->wps_method = WPS_NOT_READY; 1689 1690 p2p_set_state(p2p, P2P_PROVISIONING); 1691 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1692} 1693 1694 1695static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1696 const u8 *data, size_t len, int rx_freq) 1697{ 1698 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1699 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1700 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1701 1702 if (len < 1) 1703 return; 1704 1705 switch (data[0]) { 1706 case P2P_GO_NEG_REQ: 1707 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1708 break; 1709 case P2P_GO_NEG_RESP: 1710 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1711 break; 1712 case P2P_GO_NEG_CONF: 1713 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1714 break; 1715 case P2P_INVITATION_REQ: 1716 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1717 rx_freq); 1718 break; 1719 case P2P_INVITATION_RESP: 1720 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1721 break; 1722 case P2P_PROV_DISC_REQ: 1723 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1724 break; 1725 case P2P_PROV_DISC_RESP: 1726 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1727 break; 1728 case P2P_DEV_DISC_REQ: 1729 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1730 break; 1731 case P2P_DEV_DISC_RESP: 1732 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1733 break; 1734 default: 1735 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1736 "P2P: Unsupported P2P Public Action frame type %d", 1737 data[0]); 1738 break; 1739 } 1740} 1741 1742 1743static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1744 const u8 *sa, const u8 *bssid, const u8 *data, 1745 size_t len, int freq) 1746{ 1747 if (len < 1) 1748 return; 1749 1750 switch (data[0]) { 1751 case WLAN_PA_VENDOR_SPECIFIC: 1752 data++; 1753 len--; 1754 if (len < 3) 1755 return; 1756 if (WPA_GET_BE24(data) != OUI_WFA) 1757 return; 1758 1759 data += 3; 1760 len -= 3; 1761 if (len < 1) 1762 return; 1763 1764 if (*data != P2P_OUI_TYPE) 1765 return; 1766 1767 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1768 break; 1769 case WLAN_PA_GAS_INITIAL_REQ: 1770 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1771 break; 1772 case WLAN_PA_GAS_INITIAL_RESP: 1773 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1774 break; 1775 case WLAN_PA_GAS_COMEBACK_REQ: 1776 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1777 break; 1778 case WLAN_PA_GAS_COMEBACK_RESP: 1779 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1780 break; 1781 } 1782} 1783 1784 1785void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1786 const u8 *bssid, u8 category, 1787 const u8 *data, size_t len, int freq) 1788{ 1789 if (category == WLAN_ACTION_PUBLIC) { 1790 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1791 return; 1792 } 1793 1794 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1795 return; 1796 1797 if (len < 4) 1798 return; 1799 1800 if (WPA_GET_BE24(data) != OUI_WFA) 1801 return; 1802 data += 3; 1803 len -= 3; 1804 1805 if (*data != P2P_OUI_TYPE) 1806 return; 1807 data++; 1808 len--; 1809 1810 /* P2P action frame */ 1811 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1812 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa)); 1813 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1814 1815 if (len < 1) 1816 return; 1817 switch (data[0]) { 1818 case P2P_NOA: 1819 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1820 "P2P: Received P2P Action - Notice of Absence"); 1821 /* TODO */ 1822 break; 1823 case P2P_PRESENCE_REQ: 1824 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1825 break; 1826 case P2P_PRESENCE_RESP: 1827 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1828 break; 1829 case P2P_GO_DISC_REQ: 1830 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1831 break; 1832 default: 1833 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1834 "P2P: Received P2P Action - unknown type %u", data[0]); 1835 break; 1836 } 1837} 1838 1839 1840static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1841{ 1842 struct p2p_data *p2p = eloop_ctx; 1843 if (p2p->go_neg_peer == NULL) 1844 return; 1845 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1846 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1847 p2p_connect_send(p2p, p2p->go_neg_peer); 1848} 1849 1850 1851static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1852{ 1853 struct p2p_data *p2p = eloop_ctx; 1854 if (p2p->invite_peer == NULL) 1855 return; 1856 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1857 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1858} 1859 1860 1861static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1862 const u8 *ie, size_t ie_len) 1863{ 1864 struct p2p_message msg; 1865 struct p2p_device *dev; 1866 1867 os_memset(&msg, 0, sizeof(msg)); 1868 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1869 { 1870 p2p_parse_free(&msg); 1871 return; /* not a P2P probe */ 1872 } 1873 1874 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1875 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1876 != 0) { 1877 /* The Probe Request is not part of P2P Device Discovery. It is 1878 * not known whether the source address of the frame is the P2P 1879 * Device Address or P2P Interface Address. Do not add a new 1880 * peer entry based on this frames. 1881 */ 1882 p2p_parse_free(&msg); 1883 return; 1884 } 1885 1886 dev = p2p_get_device(p2p, addr); 1887 if (dev) { 1888 if (dev->country[0] == 0 && msg.listen_channel) 1889 os_memcpy(dev->country, msg.listen_channel, 3); 1890 os_get_time(&dev->last_seen); 1891 p2p_parse_free(&msg); 1892 return; /* already known */ 1893 } 1894 1895 dev = p2p_create_device(p2p, addr); 1896 if (dev == NULL) { 1897 p2p_parse_free(&msg); 1898 return; 1899 } 1900 1901 os_get_time(&dev->last_seen); 1902 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1903 1904 if (msg.listen_channel) { 1905 os_memcpy(dev->country, msg.listen_channel, 3); 1906 dev->listen_freq = p2p_channel_to_freq(dev->country, 1907 msg.listen_channel[3], 1908 msg.listen_channel[4]); 1909 } 1910 1911 p2p_copy_wps_info(dev, 1, &msg); 1912 1913 if (msg.wfd_subelems) { 1914 wpabuf_free(dev->info.wfd_subelems); 1915 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1916 } 1917 1918 p2p_parse_free(&msg); 1919 1920 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1921 "P2P: Created device entry based on Probe Req: " MACSTR 1922 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1923 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1924 dev->info.group_capab, dev->info.device_name, 1925 dev->listen_freq); 1926} 1927 1928 1929struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1930 const u8 *addr, 1931 struct p2p_message *msg) 1932{ 1933 struct p2p_device *dev; 1934 1935 dev = p2p_get_device(p2p, addr); 1936 if (dev) { 1937 os_get_time(&dev->last_seen); 1938 return dev; /* already known */ 1939 } 1940 1941 dev = p2p_create_device(p2p, addr); 1942 if (dev == NULL) 1943 return NULL; 1944 1945 p2p_add_dev_info(p2p, addr, dev, msg); 1946 1947 return dev; 1948} 1949 1950 1951static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1952{ 1953 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1954 return 1; 1955 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1956 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1957 WPA_GET_BE16(&req_dev_type[6]) == 0) 1958 return 1; /* Category match with wildcard OUI/sub-category */ 1959 return 0; 1960} 1961 1962 1963int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1964 size_t num_req_dev_type) 1965{ 1966 size_t i; 1967 for (i = 0; i < num_req_dev_type; i++) { 1968 if (dev_type_match(dev_type, req_dev_type[i])) 1969 return 1; 1970 } 1971 return 0; 1972} 1973 1974 1975/** 1976 * p2p_match_dev_type - Match local device type with requested type 1977 * @p2p: P2P module context from p2p_init() 1978 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1979 * Returns: 1 on match, 0 on mismatch 1980 * 1981 * This function can be used to match the Requested Device Type attribute in 1982 * WPS IE with the local device types for deciding whether to reply to a Probe 1983 * Request frame. 1984 */ 1985int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1986{ 1987 struct wps_parse_attr attr; 1988 size_t i; 1989 1990 if (wps_parse_msg(wps, &attr)) 1991 return 1; /* assume no Requested Device Type attributes */ 1992 1993 if (attr.num_req_dev_type == 0) 1994 return 1; /* no Requested Device Type attributes -> match */ 1995 1996 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1997 attr.num_req_dev_type)) 1998 return 1; /* Own Primary Device Type matches */ 1999 2000 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 2001 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 2002 attr.req_dev_type, 2003 attr.num_req_dev_type)) 2004 return 1; /* Own Secondary Device Type matches */ 2005 2006 /* No matching device type found */ 2007 return 0; 2008} 2009 2010 2011struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 2012{ 2013 struct wpabuf *buf; 2014 u8 *len; 2015 int pw_id = -1; 2016 size_t extra = 0; 2017 2018#ifdef CONFIG_WIFI_DISPLAY 2019 if (p2p->wfd_ie_probe_resp) 2020 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 2021#endif /* CONFIG_WIFI_DISPLAY */ 2022 2023 buf = wpabuf_alloc(1000 + extra); 2024 if (buf == NULL) 2025 return NULL; 2026 2027 if (p2p->go_neg_peer) { 2028 /* Advertise immediate availability of WPS credential */ 2029 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 2030 } 2031 2032 p2p_build_wps_ie(p2p, buf, pw_id, 1); 2033 2034#ifdef CONFIG_WIFI_DISPLAY 2035 if (p2p->wfd_ie_probe_resp) 2036 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 2037#endif /* CONFIG_WIFI_DISPLAY */ 2038 2039 /* P2P IE */ 2040 len = p2p_buf_add_ie_hdr(buf); 2041 p2p_buf_add_capability(buf, p2p->dev_capab & 2042 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2043 if (p2p->ext_listen_interval) 2044 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 2045 p2p->ext_listen_interval); 2046 p2p_buf_add_device_info(buf, p2p, NULL); 2047 p2p_buf_update_ie_hdr(buf, len); 2048 2049 return buf; 2050} 2051 2052 2053static int is_11b(u8 rate) 2054{ 2055 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16; 2056} 2057 2058 2059static int supp_rates_11b_only(struct ieee802_11_elems *elems) 2060{ 2061 int num_11b = 0, num_others = 0; 2062 int i; 2063 2064 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL) 2065 return 0; 2066 2067 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) { 2068 if (is_11b(elems->supp_rates[i])) 2069 num_11b++; 2070 else 2071 num_others++; 2072 } 2073 2074 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len; 2075 i++) { 2076 if (is_11b(elems->ext_supp_rates[i])) 2077 num_11b++; 2078 else 2079 num_others++; 2080 } 2081 2082 return num_11b > 0 && num_others == 0; 2083} 2084 2085 2086static enum p2p_probe_req_status 2087p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2088 const u8 *bssid, const u8 *ie, size_t ie_len) 2089{ 2090 struct ieee802_11_elems elems; 2091 struct wpabuf *buf; 2092 struct ieee80211_mgmt *resp; 2093 struct p2p_message msg; 2094 struct wpabuf *ies; 2095 2096 if (!p2p->in_listen || !p2p->drv_in_listen) { 2097 /* not in Listen state - ignore Probe Request */ 2098 return P2P_PREQ_NOT_LISTEN; 2099 } 2100 2101 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2102 ParseFailed) { 2103 /* Ignore invalid Probe Request frames */ 2104 return P2P_PREQ_MALFORMED; 2105 } 2106 2107 if (elems.p2p == NULL) { 2108 /* not a P2P probe - ignore it */ 2109 return P2P_PREQ_NOT_P2P; 2110 } 2111 2112 if (dst && !is_broadcast_ether_addr(dst) && 2113 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2114 /* Not sent to the broadcast address or our P2P Device Address 2115 */ 2116 return P2P_PREQ_NOT_PROCESSED; 2117 } 2118 2119 if (bssid && !is_broadcast_ether_addr(bssid)) { 2120 /* Not sent to the Wildcard BSSID */ 2121 return P2P_PREQ_NOT_PROCESSED; 2122 } 2123 2124 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2125 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2126 0) { 2127 /* not using P2P Wildcard SSID - ignore */ 2128 return P2P_PREQ_NOT_PROCESSED; 2129 } 2130 2131 if (supp_rates_11b_only(&elems)) { 2132 /* Indicates support for 11b rates only */ 2133 return P2P_PREQ_NOT_P2P; 2134 } 2135 2136 os_memset(&msg, 0, sizeof(msg)); 2137 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2138 /* Could not parse P2P attributes */ 2139 return P2P_PREQ_NOT_P2P; 2140 } 2141 2142 if (msg.device_id && 2143 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2144 /* Device ID did not match */ 2145 p2p_parse_free(&msg); 2146 return P2P_PREQ_NOT_PROCESSED; 2147 } 2148 2149 /* Check Requested Device Type match */ 2150 if (msg.wps_attributes && 2151 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2152 /* No match with Requested Device Type */ 2153 p2p_parse_free(&msg); 2154 return P2P_PREQ_NOT_PROCESSED; 2155 } 2156 p2p_parse_free(&msg); 2157 2158 if (!p2p->cfg->send_probe_resp) { 2159 /* Response generated elsewhere */ 2160 return P2P_PREQ_NOT_PROCESSED; 2161 } 2162 2163 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2164 "P2P: Reply to P2P Probe Request in Listen state"); 2165 2166 /* 2167 * We do not really have a specific BSS that this frame is advertising, 2168 * so build a frame that has some information in valid format. This is 2169 * really only used for discovery purposes, not to learn exact BSS 2170 * parameters. 2171 */ 2172 ies = p2p_build_probe_resp_ies(p2p); 2173 if (ies == NULL) 2174 return P2P_PREQ_NOT_PROCESSED; 2175 2176 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2177 if (buf == NULL) { 2178 wpabuf_free(ies); 2179 return P2P_PREQ_NOT_PROCESSED; 2180 } 2181 2182 resp = NULL; 2183 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2184 2185 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2186 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2187 os_memcpy(resp->da, addr, ETH_ALEN); 2188 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2189 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2190 resp->u.probe_resp.beacon_int = host_to_le16(100); 2191 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2192 resp->u.probe_resp.capab_info = 2193 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2194 WLAN_CAPABILITY_PRIVACY | 2195 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2196 2197 wpabuf_put_u8(buf, WLAN_EID_SSID); 2198 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2199 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2200 2201 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2202 wpabuf_put_u8(buf, 8); 2203 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2204 wpabuf_put_u8(buf, 90 / 5); 2205 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2206 wpabuf_put_u8(buf, 180 / 5); 2207 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2208 wpabuf_put_u8(buf, 360 / 5); 2209 wpabuf_put_u8(buf, 480 / 5); 2210 wpabuf_put_u8(buf, 540 / 5); 2211 2212 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2213 wpabuf_put_u8(buf, 1); 2214 wpabuf_put_u8(buf, p2p->cfg->channel); 2215 2216 wpabuf_put_buf(buf, ies); 2217 wpabuf_free(ies); 2218 2219 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2220 2221 wpabuf_free(buf); 2222 2223 return P2P_PREQ_NOT_PROCESSED; 2224} 2225 2226 2227enum p2p_probe_req_status 2228p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2229 const u8 *bssid, const u8 *ie, size_t ie_len) 2230{ 2231 enum p2p_probe_req_status res; 2232 2233 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2234 2235 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2236 2237 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2238 p2p->go_neg_peer && 2239 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2240 == 0 && 2241 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2242 /* Received a Probe Request from GO Negotiation peer */ 2243 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2244 "P2P: Found GO Negotiation peer - try to start GO " 2245 "negotiation from timeout"); 2246 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2247 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2248 return P2P_PREQ_PROCESSED; 2249 } 2250 2251 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2252 p2p->invite_peer && 2253 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2254 == 0) { 2255 /* Received a Probe Request from Invite peer */ 2256 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2257 "P2P: Found Invite peer - try to start Invite from " 2258 "timeout"); 2259 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2260 return P2P_PREQ_PROCESSED; 2261 } 2262 2263 return res; 2264} 2265 2266 2267static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2268 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2269{ 2270 struct wpabuf *tmp; 2271 u8 *lpos; 2272 size_t tmplen; 2273 int res; 2274 u8 group_capab; 2275 2276 if (p2p_ie == NULL) 2277 return 0; /* WLAN AP is not a P2P manager */ 2278 2279 /* 2280 * (Re)Association Request - P2P IE 2281 * P2P Capability attribute (shall be present) 2282 * P2P Interface attribute (present if concurrent device and 2283 * P2P Management is enabled) 2284 */ 2285 tmp = wpabuf_alloc(200); 2286 if (tmp == NULL) 2287 return -1; 2288 2289 lpos = p2p_buf_add_ie_hdr(tmp); 2290 group_capab = 0; 2291 if (p2p->num_groups > 0) { 2292 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2293 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2294 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2295 p2p->cross_connect) 2296 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2297 } 2298 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2299 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2300 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2301 p2p_buf_add_p2p_interface(tmp, p2p); 2302 p2p_buf_update_ie_hdr(tmp, lpos); 2303 2304 tmplen = wpabuf_len(tmp); 2305 if (tmplen > len) 2306 res = -1; 2307 else { 2308 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2309 res = tmplen; 2310 } 2311 wpabuf_free(tmp); 2312 2313 return res; 2314} 2315 2316 2317int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2318 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2319{ 2320 struct wpabuf *tmp; 2321 u8 *lpos; 2322 struct p2p_device *peer; 2323 size_t tmplen; 2324 int res; 2325 size_t extra = 0; 2326 2327 if (!p2p_group) 2328 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2329 2330#ifdef CONFIG_WIFI_DISPLAY 2331 if (p2p->wfd_ie_assoc_req) 2332 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2333#endif /* CONFIG_WIFI_DISPLAY */ 2334 2335 /* 2336 * (Re)Association Request - P2P IE 2337 * P2P Capability attribute (shall be present) 2338 * Extended Listen Timing (may be present) 2339 * P2P Device Info attribute (shall be present) 2340 */ 2341 tmp = wpabuf_alloc(200 + extra); 2342 if (tmp == NULL) 2343 return -1; 2344 2345#ifdef CONFIG_WIFI_DISPLAY 2346 if (p2p->wfd_ie_assoc_req) 2347 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2348#endif /* CONFIG_WIFI_DISPLAY */ 2349 2350 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2351 2352 lpos = p2p_buf_add_ie_hdr(tmp); 2353 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2354 if (p2p->ext_listen_interval) 2355 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2356 p2p->ext_listen_interval); 2357 p2p_buf_add_device_info(tmp, p2p, peer); 2358 p2p_buf_update_ie_hdr(tmp, lpos); 2359 2360 tmplen = wpabuf_len(tmp); 2361 if (tmplen > len) 2362 res = -1; 2363 else { 2364 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2365 res = tmplen; 2366 } 2367 wpabuf_free(tmp); 2368 2369 return res; 2370} 2371 2372 2373int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2374{ 2375 struct wpabuf *p2p_ie; 2376 int ret; 2377 2378 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2379 if (p2p_ie == NULL) 2380 return 0; 2381 2382 ret = p2p_attr_text(p2p_ie, buf, end); 2383 wpabuf_free(p2p_ie); 2384 return ret; 2385} 2386 2387 2388int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2389{ 2390 struct p2p_message msg; 2391 2392 os_memset(&msg, 0, sizeof(msg)); 2393 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2394 return -1; 2395 2396 if (msg.p2p_device_addr) { 2397 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2398 return 0; 2399 } else if (msg.device_id) { 2400 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2401 return 0; 2402 } 2403 return -1; 2404} 2405 2406 2407int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2408{ 2409 struct wpabuf *p2p_ie; 2410 int ret; 2411 2412 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2413 P2P_IE_VENDOR_TYPE); 2414 if (p2p_ie == NULL) 2415 return -1; 2416 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2417 wpabuf_free(p2p_ie); 2418 return ret; 2419} 2420 2421 2422static void p2p_clear_go_neg(struct p2p_data *p2p) 2423{ 2424 p2p->go_neg_peer = NULL; 2425 p2p_clear_timeout(p2p); 2426 p2p_set_state(p2p, P2P_IDLE); 2427} 2428 2429 2430void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2431{ 2432 if (p2p->go_neg_peer == NULL) { 2433 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2434 "P2P: No pending Group Formation - " 2435 "ignore WPS registration success notification"); 2436 return; /* No pending Group Formation */ 2437 } 2438 2439 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2440 0) { 2441 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2442 "P2P: Ignore WPS registration success notification " 2443 "for " MACSTR " (GO Negotiation peer " MACSTR ")", 2444 MAC2STR(mac_addr), 2445 MAC2STR(p2p->go_neg_peer->intended_addr)); 2446 return; /* Ignore unexpected peer address */ 2447 } 2448 2449 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2450 "P2P: Group Formation completed successfully with " MACSTR, 2451 MAC2STR(mac_addr)); 2452 2453 p2p_clear_go_neg(p2p); 2454} 2455 2456 2457void p2p_group_formation_failed(struct p2p_data *p2p) 2458{ 2459 if (p2p->go_neg_peer == NULL) { 2460 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2461 "P2P: No pending Group Formation - " 2462 "ignore group formation failure notification"); 2463 return; /* No pending Group Formation */ 2464 } 2465 2466 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2467 "P2P: Group Formation failed with " MACSTR, 2468 MAC2STR(p2p->go_neg_peer->intended_addr)); 2469 2470 p2p_clear_go_neg(p2p); 2471} 2472 2473 2474struct p2p_data * p2p_init(const struct p2p_config *cfg) 2475{ 2476 struct p2p_data *p2p; 2477 2478 if (cfg->max_peers < 1) 2479 return NULL; 2480 2481 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2482 if (p2p == NULL) 2483 return NULL; 2484 p2p->cfg = (struct p2p_config *) (p2p + 1); 2485 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2486 if (cfg->dev_name) 2487 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2488 if (cfg->manufacturer) 2489 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2490 if (cfg->model_name) 2491 p2p->cfg->model_name = os_strdup(cfg->model_name); 2492 if (cfg->model_number) 2493 p2p->cfg->model_number = os_strdup(cfg->model_number); 2494 if (cfg->serial_number) 2495 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2496 if (cfg->pref_chan) { 2497 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2498 sizeof(struct p2p_channel)); 2499 if (p2p->cfg->pref_chan) { 2500 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2501 cfg->num_pref_chan * 2502 sizeof(struct p2p_channel)); 2503 } else 2504 p2p->cfg->num_pref_chan = 0; 2505 } 2506 2507#ifdef ANDROID_P2P 2508 /* 100ms listen time is too less to receive the response frames in some scenarios 2509 * increasing min listen time to 200ms. 2510 */ 2511 p2p->min_disc_int = 2; 2512 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2513 p2p->sd_dev_list = NULL; 2514#else 2515 p2p->min_disc_int = 1; 2516#endif 2517 p2p->max_disc_int = 3; 2518 p2p->max_disc_tu = -1; 2519 2520 os_get_random(&p2p->next_tie_breaker, 1); 2521 p2p->next_tie_breaker &= 0x01; 2522 if (cfg->sd_request) 2523 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2524 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2525 if (cfg->concurrent_operations) 2526 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2527 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2528 2529 dl_list_init(&p2p->devices); 2530 2531 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2532 p2p_expiration_timeout, p2p, NULL); 2533 2534 p2p->go_timeout = 100; 2535 p2p->client_timeout = 20; 2536 2537 return p2p; 2538} 2539 2540 2541void p2p_deinit(struct p2p_data *p2p) 2542{ 2543#ifdef CONFIG_WIFI_DISPLAY 2544 wpabuf_free(p2p->wfd_ie_beacon); 2545 wpabuf_free(p2p->wfd_ie_probe_req); 2546 wpabuf_free(p2p->wfd_ie_probe_resp); 2547 wpabuf_free(p2p->wfd_ie_assoc_req); 2548 wpabuf_free(p2p->wfd_ie_invitation); 2549 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2550 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2551 wpabuf_free(p2p->wfd_ie_go_neg); 2552 wpabuf_free(p2p->wfd_dev_info); 2553 wpabuf_free(p2p->wfd_assoc_bssid); 2554 wpabuf_free(p2p->wfd_coupled_sink_info); 2555#endif /* CONFIG_WIFI_DISPLAY */ 2556 2557 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2558 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2559 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2560 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2561 p2p_flush(p2p); 2562 p2p_free_req_dev_types(p2p); 2563 os_free(p2p->cfg->dev_name); 2564 os_free(p2p->cfg->manufacturer); 2565 os_free(p2p->cfg->model_name); 2566 os_free(p2p->cfg->model_number); 2567 os_free(p2p->cfg->serial_number); 2568 os_free(p2p->cfg->pref_chan); 2569 os_free(p2p->groups); 2570 wpabuf_free(p2p->sd_resp); 2571 os_free(p2p->after_scan_tx); 2572 p2p_remove_wps_vendor_extensions(p2p); 2573 os_free(p2p); 2574} 2575 2576 2577void p2p_flush(struct p2p_data *p2p) 2578{ 2579 struct p2p_device *dev, *prev; 2580 p2p_stop_find(p2p); 2581 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2582 list) { 2583 dl_list_del(&dev->list); 2584 p2p_device_free(p2p, dev); 2585 } 2586#ifdef ANDROID_P2P 2587 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2588 p2p->sd_dev_list = NULL; 2589#endif 2590 p2p_free_sd_queries(p2p); 2591 os_free(p2p->after_scan_tx); 2592 p2p->after_scan_tx = NULL; 2593} 2594 2595 2596int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2597{ 2598 struct p2p_device *dev; 2599 2600 dev = p2p_get_device(p2p, addr); 2601 if (dev == NULL) 2602 return -1; 2603 2604 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR, 2605 MAC2STR(addr)); 2606 2607 if (p2p->go_neg_peer == dev) 2608 p2p->go_neg_peer = NULL; 2609 2610 dev->wps_method = WPS_NOT_READY; 2611 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2612 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2613 2614 /* Check if after_scan_tx is for this peer. If so free it */ 2615 if (p2p->after_scan_tx && 2616 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2617 os_free(p2p->after_scan_tx); 2618 p2p->after_scan_tx = NULL; 2619 } 2620 2621 return 0; 2622} 2623 2624 2625int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2626{ 2627 os_free(p2p->cfg->dev_name); 2628 if (dev_name) { 2629 p2p->cfg->dev_name = os_strdup(dev_name); 2630 if (p2p->cfg->dev_name == NULL) 2631 return -1; 2632 } else 2633 p2p->cfg->dev_name = NULL; 2634 return 0; 2635} 2636 2637 2638int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2639{ 2640 os_free(p2p->cfg->manufacturer); 2641 p2p->cfg->manufacturer = NULL; 2642 if (manufacturer) { 2643 p2p->cfg->manufacturer = os_strdup(manufacturer); 2644 if (p2p->cfg->manufacturer == NULL) 2645 return -1; 2646 } 2647 2648 return 0; 2649} 2650 2651 2652int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2653{ 2654 os_free(p2p->cfg->model_name); 2655 p2p->cfg->model_name = NULL; 2656 if (model_name) { 2657 p2p->cfg->model_name = os_strdup(model_name); 2658 if (p2p->cfg->model_name == NULL) 2659 return -1; 2660 } 2661 2662 return 0; 2663} 2664 2665 2666int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2667{ 2668 os_free(p2p->cfg->model_number); 2669 p2p->cfg->model_number = NULL; 2670 if (model_number) { 2671 p2p->cfg->model_number = os_strdup(model_number); 2672 if (p2p->cfg->model_number == NULL) 2673 return -1; 2674 } 2675 2676 return 0; 2677} 2678 2679 2680int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2681{ 2682 os_free(p2p->cfg->serial_number); 2683 p2p->cfg->serial_number = NULL; 2684 if (serial_number) { 2685 p2p->cfg->serial_number = os_strdup(serial_number); 2686 if (p2p->cfg->serial_number == NULL) 2687 return -1; 2688 } 2689 2690 return 0; 2691} 2692 2693 2694void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2695{ 2696 p2p->cfg->config_methods = config_methods; 2697} 2698 2699 2700void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2701{ 2702 os_memcpy(p2p->cfg->uuid, uuid, 16); 2703} 2704 2705 2706int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2707{ 2708 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2709 return 0; 2710} 2711 2712 2713int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2714 size_t num_dev_types) 2715{ 2716 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2717 num_dev_types = P2P_SEC_DEVICE_TYPES; 2718 p2p->cfg->num_sec_dev_types = num_dev_types; 2719 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2720 return 0; 2721} 2722 2723 2724void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2725{ 2726 int i; 2727 2728 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2729 wpabuf_free(p2p->wps_vendor_ext[i]); 2730 p2p->wps_vendor_ext[i] = NULL; 2731 } 2732} 2733 2734 2735int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2736 const struct wpabuf *vendor_ext) 2737{ 2738 int i; 2739 2740 if (vendor_ext == NULL) 2741 return -1; 2742 2743 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2744 if (p2p->wps_vendor_ext[i] == NULL) 2745 break; 2746 } 2747 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2748 return -1; 2749 2750 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2751 if (p2p->wps_vendor_ext[i] == NULL) 2752 return -1; 2753 2754 return 0; 2755} 2756 2757 2758int p2p_set_country(struct p2p_data *p2p, const char *country) 2759{ 2760 os_memcpy(p2p->cfg->country, country, 3); 2761 return 0; 2762} 2763 2764 2765void p2p_continue_find(struct p2p_data *p2p) 2766{ 2767 struct p2p_device *dev; 2768#ifdef ANDROID_P2P 2769 int skip=1; 2770#endif 2771 p2p_set_state(p2p, P2P_SEARCH); 2772 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2773#ifdef ANDROID_P2P 2774 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2775 * There may be a scenario, where a particular peer device have 2776 * not registered any query response. When we send a SD request to such device, 2777 * no response will be received. And if we continue to get probe responses from that device, 2778 * and if that device happens to be on top in our device list, 2779 * we will always continue to send SD requests always to that peer only. 2780 * We will not be able to send SD requests to other devices in that case. 2781 * This implementation keeps track of last serviced peer device. 2782 * And then takes the next one from the device list, in the next iteration. 2783 */ 2784 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2785 if(skip) { 2786 if ((&dev->list == p2p->sd_dev_list) ) { 2787 skip = 0; 2788 if (dev->list.next == &p2p->devices) 2789 p2p->sd_dev_list = NULL; 2790 } 2791 continue; 2792 } 2793 } 2794 p2p->sd_dev_list = &dev->list; 2795 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2796 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2797 MAC2STR(dev->info.p2p_device_addr)); 2798#endif 2799 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2800 if (p2p_start_sd(p2p, dev) == 0) 2801 return; 2802 else 2803 break; 2804 } else if (dev->req_config_methods && 2805 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2806 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2807 "pending Provision Discovery Request to " 2808 MACSTR " (config methods 0x%x)", 2809 MAC2STR(dev->info.p2p_device_addr), 2810 dev->req_config_methods); 2811 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2812 return; 2813 } 2814 } 2815 2816 p2p_listen_in_find(p2p, 1); 2817} 2818 2819 2820static void p2p_sd_cb(struct p2p_data *p2p, int success) 2821{ 2822 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2823 "P2P: Service Discovery Query TX callback: success=%d", 2824 success); 2825 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2826 2827 if (!success) { 2828 if (p2p->sd_peer) { 2829 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2830 p2p->sd_peer = NULL; 2831 } 2832 p2p_continue_find(p2p); 2833 return; 2834 } 2835 2836 if (p2p->sd_peer == NULL) { 2837 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2838 "P2P: No SD peer entry known"); 2839 p2p_continue_find(p2p); 2840 return; 2841 } 2842 2843 /* Wait for response from the peer */ 2844 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2845 p2p_set_timeout(p2p, 0, 200000); 2846} 2847 2848 2849/** 2850 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2851 * @p2p: P2P module context from p2p_init() 2852 */ 2853static void p2p_retry_pd(struct p2p_data *p2p) 2854{ 2855 struct p2p_device *dev; 2856 2857 if (p2p->state != P2P_IDLE) 2858 return; 2859 2860 /* 2861 * Retry the prov disc req attempt only for the peer that the user had 2862 * requested. 2863 */ 2864 2865 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2866 if (os_memcmp(p2p->pending_pd_devaddr, 2867 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2868 continue; 2869 if (!dev->req_config_methods) 2870 continue; 2871 2872 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2873 "pending Provision Discovery Request to " 2874 MACSTR " (config methods 0x%x)", 2875 MAC2STR(dev->info.p2p_device_addr), 2876 dev->req_config_methods); 2877 p2p_send_prov_disc_req(p2p, dev, 2878 dev->flags & P2P_DEV_PD_FOR_JOIN, 0); 2879 return; 2880 } 2881} 2882 2883 2884static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2885{ 2886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2887 "P2P: Provision Discovery Request TX callback: success=%d", 2888 success); 2889 2890 /* 2891 * Postpone resetting the pending action state till after we actually 2892 * time out. This allows us to take some action like notifying any 2893 * interested parties about no response to the request. 2894 * 2895 * When the timer (below) goes off we check in IDLE, SEARCH, or 2896 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2897 * requests in, if this was still pending and then raise notification. 2898 */ 2899 2900 if (!success) { 2901 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2902 2903 if (p2p->user_initiated_pd && 2904 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2905 { 2906 /* Retry request from timeout to avoid busy loops */ 2907 p2p->pending_action_state = P2P_PENDING_PD; 2908 p2p_set_timeout(p2p, 0, 50000); 2909 } else if (p2p->state != P2P_IDLE) 2910 p2p_continue_find(p2p); 2911 else if (p2p->user_initiated_pd) { 2912 p2p->pending_action_state = P2P_PENDING_PD; 2913#ifdef ANDROID_P2P 2914 p2p_set_timeout(p2p, 0, 350000); 2915#else 2916 p2p_set_timeout(p2p, 0, 300000); 2917#endif 2918 } 2919 return; 2920 } 2921 2922 /* 2923 * This postponing, of resetting pending_action_state, needs to be 2924 * done only for user initiated PD requests and not internal ones. 2925 */ 2926 if (p2p->user_initiated_pd) 2927 p2p->pending_action_state = P2P_PENDING_PD; 2928 else 2929 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2930 2931 /* Wait for response from the peer */ 2932 if (p2p->state == P2P_SEARCH) 2933 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2934#ifdef ANDROID_P2P 2935 p2p_set_timeout(p2p, 0, 350000); 2936#else 2937 p2p_set_timeout(p2p, 0, 200000); 2938#endif 2939} 2940 2941 2942int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2943 struct os_time *rx_time, int level, const u8 *ies, 2944 size_t ies_len) 2945{ 2946 if (os_time_before(rx_time, &p2p->find_start)) { 2947 /* 2948 * The driver may have cached (e.g., in cfg80211 BSS table) the 2949 * scan results for relatively long time. To avoid reporting 2950 * stale information, update P2P peers only based on results 2951 * that have based on frames received after the last p2p_find 2952 * operation was started. 2953 */ 2954 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Ignore old scan " 2955 "result for " MACSTR " (rx_time=%u.%06u)", 2956 MAC2STR(bssid), (unsigned int) rx_time->sec, 2957 (unsigned int) rx_time->usec); 2958 return 0; 2959 } 2960 2961 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 2962 2963 return 0; 2964} 2965 2966 2967void p2p_scan_res_handled(struct p2p_data *p2p) 2968{ 2969 if (!p2p->p2p_scan_running) { 2970 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not " 2971 "running, but scan results received"); 2972 } 2973 p2p->p2p_scan_running = 0; 2974 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2975 2976 if (p2p_run_after_scan(p2p)) 2977 return; 2978 if (p2p->state == P2P_SEARCH) 2979 p2p_continue_find(p2p); 2980} 2981 2982 2983void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2984{ 2985 u8 *len; 2986 2987#ifdef CONFIG_WIFI_DISPLAY 2988 if (p2p->wfd_ie_probe_req) 2989 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2990#endif /* CONFIG_WIFI_DISPLAY */ 2991 2992 len = p2p_buf_add_ie_hdr(ies); 2993 p2p_buf_add_capability(ies, p2p->dev_capab & 2994 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2995 if (dev_id) 2996 p2p_buf_add_device_id(ies, dev_id); 2997 if (p2p->cfg->reg_class && p2p->cfg->channel) 2998 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2999 p2p->cfg->reg_class, 3000 p2p->cfg->channel); 3001 if (p2p->ext_listen_interval) 3002 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 3003 p2p->ext_listen_interval); 3004 /* TODO: p2p_buf_add_operating_channel() if GO */ 3005 p2p_buf_update_ie_hdr(ies, len); 3006} 3007 3008 3009size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 3010{ 3011 size_t len = 100; 3012 3013#ifdef CONFIG_WIFI_DISPLAY 3014 if (p2p && p2p->wfd_ie_probe_req) 3015 len += wpabuf_len(p2p->wfd_ie_probe_req); 3016#endif /* CONFIG_WIFI_DISPLAY */ 3017 3018 return len; 3019} 3020 3021 3022int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 3023{ 3024 return p2p_attr_text(p2p_ie, buf, end); 3025} 3026 3027 3028static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 3029{ 3030 struct p2p_device *dev = p2p->go_neg_peer; 3031 int timeout; 3032 3033 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3034 "P2P: GO Negotiation Request TX callback: success=%d", 3035 success); 3036 3037 if (dev == NULL) { 3038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3039 "P2P: No pending GO Negotiation"); 3040 return; 3041 } 3042 3043 if (success) { 3044 if (dev->flags & P2P_DEV_USER_REJECTED) { 3045 p2p_set_state(p2p, P2P_IDLE); 3046 return; 3047 } 3048 } else if (dev->go_neg_req_sent) { 3049 /* Cancel the increment from p2p_connect_send() on failure */ 3050 dev->go_neg_req_sent--; 3051 } 3052 3053 if (!success && 3054 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 3055 !is_zero_ether_addr(dev->member_in_go_dev)) { 3056 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3057 "P2P: Peer " MACSTR " did not acknowledge request - " 3058 "try to use device discoverability through its GO", 3059 MAC2STR(dev->info.p2p_device_addr)); 3060 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3061 p2p_send_dev_disc_req(p2p, dev); 3062 return; 3063 } 3064 3065 /* 3066 * Use P2P find, if needed, to find the other device from its listen 3067 * channel. 3068 */ 3069 p2p_set_state(p2p, P2P_CONNECT); 3070 timeout = success ? 500000 : 100000; 3071 if (!success && p2p->go_neg_peer && 3072 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 3073 unsigned int r; 3074 /* 3075 * Peer is expected to wait our response and we will skip the 3076 * listen phase. Add some randomness to the wait time here to 3077 * make it less likely to hit cases where we could end up in 3078 * sync with peer not listening. 3079 */ 3080 os_get_random((u8 *) &r, sizeof(r)); 3081 timeout += r % 100000; 3082 } 3083 p2p_set_timeout(p2p, 0, timeout); 3084} 3085 3086 3087static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 3088{ 3089 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3090 "P2P: GO Negotiation Response TX callback: success=%d", 3091 success); 3092 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 3093 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3094 "P2P: Ignore TX callback event - GO Negotiation is " 3095 "not running anymore"); 3096 return; 3097 } 3098 p2p_set_state(p2p, P2P_CONNECT); 3099 p2p_set_timeout(p2p, 0, 500000); 3100} 3101 3102 3103static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success) 3104{ 3105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3106 "P2P: GO Negotiation Response (failure) TX callback: " 3107 "success=%d", success); 3108 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 3109 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 3110 p2p->go_neg_peer->status); 3111 } 3112} 3113 3114 3115static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3116 enum p2p_send_action_result result) 3117{ 3118 struct p2p_device *dev; 3119 3120 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3121 "P2P: GO Negotiation Confirm TX callback: result=%d", 3122 result); 3123 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3124 if (result == P2P_SEND_ACTION_FAILED) { 3125 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3126 return; 3127 } 3128 if (result == P2P_SEND_ACTION_NO_ACK) { 3129 /* 3130 * It looks like the TX status for GO Negotiation Confirm is 3131 * often showing failure even when the peer has actually 3132 * received the frame. Since the peer may change channels 3133 * immediately after having received the frame, we may not see 3134 * an Ack for retries, so just dropping a single frame may 3135 * trigger this. To allow the group formation to succeed if the 3136 * peer did indeed receive the frame, continue regardless of 3137 * the TX status. 3138 */ 3139 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3140 "P2P: Assume GO Negotiation Confirm TX was actually " 3141 "received by the peer even though Ack was not " 3142 "reported"); 3143 } 3144 3145 dev = p2p->go_neg_peer; 3146 if (dev == NULL) 3147 return; 3148 3149 p2p_go_complete(p2p, dev); 3150} 3151 3152 3153void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3154 const u8 *src, const u8 *bssid, 3155 enum p2p_send_action_result result) 3156{ 3157 enum p2p_pending_action_state state; 3158 int success; 3159 3160 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3161 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR 3162 " src=" MACSTR " bssid=" MACSTR " result=%d", 3163 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3164 MAC2STR(bssid), result); 3165 success = result == P2P_SEND_ACTION_SUCCESS; 3166 state = p2p->pending_action_state; 3167 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3168 switch (state) { 3169 case P2P_NO_PENDING_ACTION: 3170 break; 3171 case P2P_PENDING_GO_NEG_REQUEST: 3172 p2p_go_neg_req_cb(p2p, success); 3173 break; 3174 case P2P_PENDING_GO_NEG_RESPONSE: 3175 p2p_go_neg_resp_cb(p2p, success); 3176 break; 3177 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3178 p2p_go_neg_resp_failure_cb(p2p, success); 3179 break; 3180 case P2P_PENDING_GO_NEG_CONFIRM: 3181 p2p_go_neg_conf_cb(p2p, result); 3182 break; 3183 case P2P_PENDING_SD: 3184 p2p_sd_cb(p2p, success); 3185 break; 3186 case P2P_PENDING_PD: 3187 p2p_prov_disc_cb(p2p, success); 3188 break; 3189 case P2P_PENDING_INVITATION_REQUEST: 3190 p2p_invitation_req_cb(p2p, success); 3191 break; 3192 case P2P_PENDING_INVITATION_RESPONSE: 3193 p2p_invitation_resp_cb(p2p, success); 3194 break; 3195 case P2P_PENDING_DEV_DISC_REQUEST: 3196 p2p_dev_disc_req_cb(p2p, success); 3197 break; 3198 case P2P_PENDING_DEV_DISC_RESPONSE: 3199 p2p_dev_disc_resp_cb(p2p, success); 3200 break; 3201 case P2P_PENDING_GO_DISC_REQ: 3202 p2p_go_disc_req_cb(p2p, success); 3203 break; 3204 } 3205} 3206 3207 3208void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3209 unsigned int duration) 3210{ 3211 if (freq == p2p->pending_client_disc_freq) { 3212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3213 "P2P: Client discoverability remain-awake completed"); 3214 p2p->pending_client_disc_freq = 0; 3215 return; 3216 } 3217 3218 if (freq != p2p->pending_listen_freq) { 3219 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3220 "P2P: Unexpected listen callback for freq=%u " 3221 "duration=%u (pending_listen_freq=%u)", 3222 freq, duration, p2p->pending_listen_freq); 3223 return; 3224 } 3225 3226 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3227 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on " 3228 "callback", 3229 p2p->pending_listen_sec, p2p->pending_listen_usec, 3230 p2p->pending_listen_freq); 3231 p2p->in_listen = 1; 3232 p2p->drv_in_listen = freq; 3233 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3234 /* 3235 * Add 20 msec extra wait to avoid race condition with driver 3236 * remain-on-channel end event, i.e., give driver more time to 3237 * complete the operation before our timeout expires. 3238 */ 3239 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3240 p2p->pending_listen_usec + 20000); 3241 } 3242 3243 p2p->pending_listen_freq = 0; 3244} 3245 3246 3247int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3248{ 3249 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen " 3250 "state (freq=%u)", freq); 3251 p2p->drv_in_listen = 0; 3252 if (p2p->in_listen) 3253 return 0; /* Internal timeout will trigger the next step */ 3254 3255 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3256 if (p2p->go_neg_peer->connect_reqs >= 120) { 3257 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3258 "P2P: Timeout on sending GO Negotiation " 3259 "Request without getting response"); 3260 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3261 return 0; 3262 } 3263 3264 p2p_set_state(p2p, P2P_CONNECT); 3265 p2p_connect_send(p2p, p2p->go_neg_peer); 3266 return 1; 3267 } else if (p2p->state == P2P_SEARCH) { 3268 if (p2p->p2p_scan_running) { 3269 /* 3270 * Search is already in progress. This can happen if 3271 * an Action frame RX is reported immediately after 3272 * the end of a remain-on-channel operation and the 3273 * response frame to that is sent using an offchannel 3274 * operation while in p2p_find. Avoid an attempt to 3275 * restart a scan here. 3276 */ 3277 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan " 3278 "already in progress - do not try to start a " 3279 "new one"); 3280 return 1; 3281 } 3282 if (p2p->pending_listen_freq) { 3283 /* 3284 * Better wait a bit if the driver is unable to start 3285 * offchannel operation for some reason. p2p_search() 3286 * will be started from internal timeout. 3287 */ 3288 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen " 3289 "operation did not seem to start - delay " 3290 "search phase to avoid busy loop"); 3291 p2p_set_timeout(p2p, 0, 100000); 3292 return 1; 3293 } 3294 if (p2p->search_delay) { 3295 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3296 "search operation by %u ms", 3297 p2p->search_delay); 3298 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3299 (p2p->search_delay % 1000) * 1000); 3300 return 1; 3301 } 3302 p2p_search(p2p); 3303 return 1; 3304 } 3305 3306 return 0; 3307} 3308 3309 3310static void p2p_timeout_connect(struct p2p_data *p2p) 3311{ 3312 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3313 if (p2p->go_neg_peer && 3314 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3315 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO " 3316 "Negotiation Confirm timed out - assume GO " 3317 "Negotiation failed"); 3318 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3319 return; 3320 } 3321 if (p2p->go_neg_peer && 3322 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3323 p2p->go_neg_peer->connect_reqs < 120) { 3324 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer expected to " 3325 "wait our response - skip listen"); 3326 p2p_connect_send(p2p, p2p->go_neg_peer); 3327 return; 3328 } 3329 3330 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3331 p2p_listen_in_find(p2p, 0); 3332} 3333 3334 3335static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3336{ 3337 if (p2p->go_neg_peer) { 3338 if (p2p->drv_in_listen) { 3339 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is " 3340 "still in Listen state; wait for it to " 3341 "complete"); 3342 return; 3343 } 3344 3345 if (p2p->go_neg_peer->connect_reqs >= 120) { 3346 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3347 "P2P: Timeout on sending GO Negotiation " 3348 "Request without getting response"); 3349 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3350 return; 3351 } 3352 3353 p2p_set_state(p2p, P2P_CONNECT); 3354 p2p_connect_send(p2p, p2p->go_neg_peer); 3355 } else 3356 p2p_set_state(p2p, P2P_IDLE); 3357} 3358 3359 3360static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3361{ 3362 /* 3363 * TODO: could remain constantly in Listen state for some time if there 3364 * are no other concurrent uses for the radio. For now, go to listen 3365 * state once per second to give other uses a chance to use the radio. 3366 */ 3367 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3368 p2p_set_timeout(p2p, 0, 500000); 3369} 3370 3371 3372static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3373{ 3374 struct p2p_device *dev = p2p->go_neg_peer; 3375 3376 if (dev == NULL) { 3377 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3378 "P2P: Unknown GO Neg peer - stop GO Neg wait"); 3379 return; 3380 } 3381 3382 dev->wait_count++; 3383 if (dev->wait_count >= 120) { 3384 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3385 "P2P: Timeout on waiting peer to become ready for GO " 3386 "Negotiation"); 3387 p2p_go_neg_failed(p2p, dev, -1); 3388 return; 3389 } 3390 3391 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3392 "P2P: Go to Listen state while waiting for the peer to become " 3393 "ready for GO Negotiation"); 3394 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3395 p2p_listen_in_find(p2p, 0); 3396} 3397 3398 3399static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3400{ 3401 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3402 "P2P: Service Discovery Query timeout"); 3403 if (p2p->sd_peer) { 3404 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3405 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3406 p2p->sd_peer = NULL; 3407 } 3408 p2p_continue_find(p2p); 3409} 3410 3411 3412static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3413{ 3414 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3415 "P2P: Provision Discovery Request timeout"); 3416 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3417 p2p_continue_find(p2p); 3418} 3419 3420 3421static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3422{ 3423 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3424 3425 /* 3426 * For user initiated PD requests that we have not gotten any responses 3427 * for while in IDLE state, we retry them a couple of times before 3428 * giving up. 3429 */ 3430 if (!p2p->user_initiated_pd) 3431 return; 3432 3433 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3434 "P2P: User initiated Provision Discovery Request timeout"); 3435 3436 if (p2p->pd_retries) { 3437 p2p->pd_retries--; 3438 p2p_retry_pd(p2p); 3439 } else { 3440 struct p2p_device *dev; 3441 int for_join = 0; 3442 3443 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3444 if (os_memcmp(p2p->pending_pd_devaddr, 3445 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3446 continue; 3447 if (dev->req_config_methods && 3448 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3449 for_join = 1; 3450 } 3451 3452 if (p2p->cfg->prov_disc_fail) 3453 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3454 p2p->pending_pd_devaddr, 3455 for_join ? 3456 P2P_PROV_DISC_TIMEOUT_JOIN : 3457 P2P_PROV_DISC_TIMEOUT); 3458 p2p_reset_pending_pd(p2p); 3459 } 3460} 3461 3462 3463static void p2p_timeout_invite(struct p2p_data *p2p) 3464{ 3465 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3466 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3467 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3468 /* 3469 * Better remain on operating channel instead of listen channel 3470 * when running a group. 3471 */ 3472 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in " 3473 "active GO role - wait on operating channel"); 3474 p2p_set_timeout(p2p, 0, 100000); 3475 return; 3476 } 3477 p2p_listen_in_find(p2p, 0); 3478} 3479 3480 3481static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3482{ 3483 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3484 p2p_set_state(p2p, P2P_INVITE); 3485 p2p_invite_send(p2p, p2p->invite_peer, 3486 p2p->invite_go_dev_addr); 3487 } else { 3488 if (p2p->invite_peer) { 3489 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3490 "P2P: Invitation Request retry limit reached"); 3491 if (p2p->cfg->invitation_result) 3492 p2p->cfg->invitation_result( 3493 p2p->cfg->cb_ctx, -1, NULL); 3494 } 3495 p2p_set_state(p2p, P2P_IDLE); 3496 } 3497} 3498 3499 3500static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3501{ 3502 struct p2p_data *p2p = eloop_ctx; 3503 3504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)", 3505 p2p_state_txt(p2p->state)); 3506 3507 p2p->in_listen = 0; 3508 3509 switch (p2p->state) { 3510 case P2P_IDLE: 3511 /* Check if we timed out waiting for PD req */ 3512 if (p2p->pending_action_state == P2P_PENDING_PD) 3513 p2p_timeout_prov_disc_req(p2p); 3514 break; 3515 case P2P_SEARCH: 3516 /* Check if we timed out waiting for PD req */ 3517 if (p2p->pending_action_state == P2P_PENDING_PD) 3518 p2p_timeout_prov_disc_req(p2p); 3519 if (p2p->search_delay && !p2p->in_search_delay) { 3520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3521 "search operation by %u ms", 3522 p2p->search_delay); 3523 p2p->in_search_delay = 1; 3524 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3525 (p2p->search_delay % 1000) * 1000); 3526 break; 3527 } 3528 p2p->in_search_delay = 0; 3529 p2p_search(p2p); 3530 break; 3531 case P2P_CONNECT: 3532 p2p_timeout_connect(p2p); 3533 break; 3534 case P2P_CONNECT_LISTEN: 3535 p2p_timeout_connect_listen(p2p); 3536 break; 3537 case P2P_GO_NEG: 3538 break; 3539 case P2P_LISTEN_ONLY: 3540 /* Check if we timed out waiting for PD req */ 3541 if (p2p->pending_action_state == P2P_PENDING_PD) 3542 p2p_timeout_prov_disc_req(p2p); 3543 3544 if (p2p->ext_listen_only) { 3545 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3546 "P2P: Extended Listen Timing - Listen State " 3547 "completed"); 3548 p2p->ext_listen_only = 0; 3549 p2p_set_state(p2p, P2P_IDLE); 3550 } 3551 break; 3552 case P2P_WAIT_PEER_CONNECT: 3553 p2p_timeout_wait_peer_connect(p2p); 3554 break; 3555 case P2P_WAIT_PEER_IDLE: 3556 p2p_timeout_wait_peer_idle(p2p); 3557 break; 3558 case P2P_SD_DURING_FIND: 3559 p2p_timeout_sd_during_find(p2p); 3560 break; 3561 case P2P_PROVISIONING: 3562 break; 3563 case P2P_PD_DURING_FIND: 3564 p2p_timeout_prov_disc_during_find(p2p); 3565 break; 3566 case P2P_INVITE: 3567 p2p_timeout_invite(p2p); 3568 break; 3569 case P2P_INVITE_LISTEN: 3570 p2p_timeout_invite_listen(p2p); 3571 break; 3572 case P2P_SEARCH_WHEN_READY: 3573 break; 3574 case P2P_CONTINUE_SEARCH_WHEN_READY: 3575 break; 3576 } 3577} 3578 3579 3580int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3581{ 3582 struct p2p_device *dev; 3583 3584 dev = p2p_get_device(p2p, peer_addr); 3585 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject " 3586 "connection attempts by peer " MACSTR, MAC2STR(peer_addr)); 3587 if (dev == NULL) { 3588 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR 3589 " unknown", MAC2STR(peer_addr)); 3590 return -1; 3591 } 3592 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3593 dev->flags |= P2P_DEV_USER_REJECTED; 3594 return 0; 3595} 3596 3597 3598const char * p2p_wps_method_text(enum p2p_wps_method method) 3599{ 3600 switch (method) { 3601 case WPS_NOT_READY: 3602 return "not-ready"; 3603 case WPS_PIN_DISPLAY: 3604 return "Display"; 3605 case WPS_PIN_KEYPAD: 3606 return "Keypad"; 3607 case WPS_PBC: 3608 return "PBC"; 3609 } 3610 3611 return "??"; 3612} 3613 3614 3615static const char * p2p_go_state_text(enum p2p_go_state go_state) 3616{ 3617 switch (go_state) { 3618 case UNKNOWN_GO: 3619 return "unknown"; 3620 case LOCAL_GO: 3621 return "local"; 3622 case REMOTE_GO: 3623 return "remote"; 3624 } 3625 3626 return "??"; 3627} 3628 3629 3630const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3631 const u8 *addr, int next) 3632{ 3633 struct p2p_device *dev; 3634 3635 if (addr) 3636 dev = p2p_get_device(p2p, addr); 3637 else 3638 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3639 3640 if (dev && next) { 3641 dev = dl_list_first(&dev->list, struct p2p_device, list); 3642 if (&dev->list == &p2p->devices) 3643 dev = NULL; 3644 } 3645 3646 if (dev == NULL) 3647 return NULL; 3648 3649 return &dev->info; 3650} 3651 3652 3653int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3654 char *buf, size_t buflen) 3655{ 3656 struct p2p_device *dev; 3657 int res; 3658 char *pos, *end; 3659 struct os_time now; 3660 3661 if (info == NULL) 3662 return -1; 3663 3664 dev = (struct p2p_device *) (((u8 *) info) - 3665 offsetof(struct p2p_device, info)); 3666 3667 pos = buf; 3668 end = buf + buflen; 3669 3670 os_get_time(&now); 3671 res = os_snprintf(pos, end - pos, 3672 "age=%d\n" 3673 "listen_freq=%d\n" 3674 "wps_method=%s\n" 3675 "interface_addr=" MACSTR "\n" 3676 "member_in_go_dev=" MACSTR "\n" 3677 "member_in_go_iface=" MACSTR "\n" 3678 "go_neg_req_sent=%d\n" 3679 "go_state=%s\n" 3680 "dialog_token=%u\n" 3681 "intended_addr=" MACSTR "\n" 3682 "country=%c%c\n" 3683 "oper_freq=%d\n" 3684 "req_config_methods=0x%x\n" 3685 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3686 "status=%d\n" 3687 "wait_count=%u\n" 3688 "invitation_reqs=%u\n", 3689 (int) (now.sec - dev->last_seen.sec), 3690 dev->listen_freq, 3691 p2p_wps_method_text(dev->wps_method), 3692 MAC2STR(dev->interface_addr), 3693 MAC2STR(dev->member_in_go_dev), 3694 MAC2STR(dev->member_in_go_iface), 3695 dev->go_neg_req_sent, 3696 p2p_go_state_text(dev->go_state), 3697 dev->dialog_token, 3698 MAC2STR(dev->intended_addr), 3699 dev->country[0] ? dev->country[0] : '_', 3700 dev->country[1] ? dev->country[1] : '_', 3701 dev->oper_freq, 3702 dev->req_config_methods, 3703 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3704 "[PROBE_REQ_ONLY]" : "", 3705 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3706 dev->flags & P2P_DEV_NOT_YET_READY ? 3707 "[NOT_YET_READY]" : "", 3708 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3709 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3710 "", 3711 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3712 "[PD_PEER_DISPLAY]" : "", 3713 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3714 "[PD_PEER_KEYPAD]" : "", 3715 dev->flags & P2P_DEV_USER_REJECTED ? 3716 "[USER_REJECTED]" : "", 3717 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3718 "[PEER_WAITING_RESPONSE]" : "", 3719 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3720 "[PREFER_PERSISTENT_GROUP]" : "", 3721 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3722 "[WAIT_GO_NEG_RESPONSE]" : "", 3723 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3724 "[WAIT_GO_NEG_CONFIRM]" : "", 3725 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3726 "[GROUP_CLIENT_ONLY]" : "", 3727 dev->flags & P2P_DEV_FORCE_FREQ ? 3728 "[FORCE_FREQ]" : "", 3729 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3730 "[PD_FOR_JOIN]" : "", 3731 dev->status, 3732 dev->wait_count, 3733 dev->invitation_reqs); 3734 if (res < 0 || res >= end - pos) 3735 return pos - buf; 3736 pos += res; 3737 3738 if (dev->ext_listen_period) { 3739 res = os_snprintf(pos, end - pos, 3740 "ext_listen_period=%u\n" 3741 "ext_listen_interval=%u\n", 3742 dev->ext_listen_period, 3743 dev->ext_listen_interval); 3744 if (res < 0 || res >= end - pos) 3745 return pos - buf; 3746 pos += res; 3747 } 3748 3749 if (dev->oper_ssid_len) { 3750 res = os_snprintf(pos, end - pos, 3751 "oper_ssid=%s\n", 3752 wpa_ssid_txt(dev->oper_ssid, 3753 dev->oper_ssid_len)); 3754 if (res < 0 || res >= end - pos) 3755 return pos - buf; 3756 pos += res; 3757 } 3758 3759#ifdef CONFIG_WIFI_DISPLAY 3760 if (dev->info.wfd_subelems) { 3761 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3762 if (res < 0 || res >= end - pos) 3763 return pos - buf; 3764 pos += res; 3765 3766 pos += wpa_snprintf_hex(pos, end - pos, 3767 wpabuf_head(dev->info.wfd_subelems), 3768 wpabuf_len(dev->info.wfd_subelems)); 3769 3770 res = os_snprintf(pos, end - pos, "\n"); 3771 if (res < 0 || res >= end - pos) 3772 return pos - buf; 3773 pos += res; 3774 } 3775#endif /* CONFIG_WIFI_DISPLAY */ 3776 3777 return pos - buf; 3778} 3779 3780 3781int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3782{ 3783 return p2p_get_device(p2p, addr) != NULL; 3784} 3785 3786 3787void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3788{ 3789 if (enabled) { 3790 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3791 "discoverability enabled"); 3792 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3793 } else { 3794 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3795 "discoverability disabled"); 3796 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3797 } 3798} 3799 3800 3801static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3802 u32 duration2, u32 interval2) 3803{ 3804 struct wpabuf *req; 3805 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3806 u8 *len; 3807 3808 req = wpabuf_alloc(100); 3809 if (req == NULL) 3810 return NULL; 3811 3812 if (duration1 || interval1) { 3813 os_memset(&desc1, 0, sizeof(desc1)); 3814 desc1.count_type = 1; 3815 desc1.duration = duration1; 3816 desc1.interval = interval1; 3817 ptr1 = &desc1; 3818 3819 if (duration2 || interval2) { 3820 os_memset(&desc2, 0, sizeof(desc2)); 3821 desc2.count_type = 2; 3822 desc2.duration = duration2; 3823 desc2.interval = interval2; 3824 ptr2 = &desc2; 3825 } 3826 } 3827 3828 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3829 len = p2p_buf_add_ie_hdr(req); 3830 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3831 p2p_buf_update_ie_hdr(req, len); 3832 3833 return req; 3834} 3835 3836 3837int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3838 const u8 *own_interface_addr, unsigned int freq, 3839 u32 duration1, u32 interval1, u32 duration2, 3840 u32 interval2) 3841{ 3842 struct wpabuf *req; 3843 3844 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to " 3845 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u " 3846 "int1=%u dur2=%u int2=%u", 3847 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3848 freq, duration1, interval1, duration2, interval2); 3849 3850 req = p2p_build_presence_req(duration1, interval1, duration2, 3851 interval2); 3852 if (req == NULL) 3853 return -1; 3854 3855 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3856 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3857 go_interface_addr, 3858 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3859 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3860 "P2P: Failed to send Action frame"); 3861 } 3862 wpabuf_free(req); 3863 3864 return 0; 3865} 3866 3867 3868static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3869 size_t noa_len, u8 dialog_token) 3870{ 3871 struct wpabuf *resp; 3872 u8 *len; 3873 3874 resp = wpabuf_alloc(100 + noa_len); 3875 if (resp == NULL) 3876 return NULL; 3877 3878 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3879 len = p2p_buf_add_ie_hdr(resp); 3880 p2p_buf_add_status(resp, status); 3881 if (noa) { 3882 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3883 wpabuf_put_le16(resp, noa_len); 3884 wpabuf_put_data(resp, noa, noa_len); 3885 } else 3886 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3887 p2p_buf_update_ie_hdr(resp, len); 3888 3889 return resp; 3890} 3891 3892 3893static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3894 const u8 *sa, const u8 *data, size_t len, 3895 int rx_freq) 3896{ 3897 struct p2p_message msg; 3898 u8 status; 3899 struct wpabuf *resp; 3900 size_t g; 3901 struct p2p_group *group = NULL; 3902 int parsed = 0; 3903 u8 noa[50]; 3904 int noa_len; 3905 3906 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3907 "P2P: Received P2P Action - P2P Presence Request"); 3908 3909 for (g = 0; g < p2p->num_groups; g++) { 3910 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3911 ETH_ALEN) == 0) { 3912 group = p2p->groups[g]; 3913 break; 3914 } 3915 } 3916 if (group == NULL) { 3917 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3918 "P2P: Ignore P2P Presence Request for unknown group " 3919 MACSTR, MAC2STR(da)); 3920 return; 3921 } 3922 3923 if (p2p_parse(data, len, &msg) < 0) { 3924 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3925 "P2P: Failed to parse P2P Presence Request"); 3926 status = P2P_SC_FAIL_INVALID_PARAMS; 3927 goto fail; 3928 } 3929 parsed = 1; 3930 3931 if (msg.noa == NULL) { 3932 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3933 "P2P: No NoA attribute in P2P Presence Request"); 3934 status = P2P_SC_FAIL_INVALID_PARAMS; 3935 goto fail; 3936 } 3937 3938 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3939 3940fail: 3941 if (p2p->cfg->get_noa) 3942 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3943 sizeof(noa)); 3944 else 3945 noa_len = -1; 3946 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3947 noa_len > 0 ? noa_len : 0, 3948 msg.dialog_token); 3949 if (parsed) 3950 p2p_parse_free(&msg); 3951 if (resp == NULL) 3952 return; 3953 3954 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3955 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3956 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3957 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3958 "P2P: Failed to send Action frame"); 3959 } 3960 wpabuf_free(resp); 3961} 3962 3963 3964static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3965 const u8 *sa, const u8 *data, size_t len) 3966{ 3967 struct p2p_message msg; 3968 3969 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3970 "P2P: Received P2P Action - P2P Presence Response"); 3971 3972 if (p2p_parse(data, len, &msg) < 0) { 3973 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3974 "P2P: Failed to parse P2P Presence Response"); 3975 return; 3976 } 3977 3978 if (msg.status == NULL || msg.noa == NULL) { 3979 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3980 "P2P: No Status or NoA attribute in P2P Presence " 3981 "Response"); 3982 p2p_parse_free(&msg); 3983 return; 3984 } 3985 3986 if (*msg.status) { 3987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3988 "P2P: P2P Presence Request was rejected: status %u", 3989 *msg.status); 3990 p2p_parse_free(&msg); 3991 return; 3992 } 3993 3994 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3995 "P2P: P2P Presence Request was accepted"); 3996 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3997 msg.noa, msg.noa_len); 3998 /* TODO: process NoA */ 3999 p2p_parse_free(&msg); 4000} 4001 4002 4003static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4004{ 4005 struct p2p_data *p2p = eloop_ctx; 4006 4007 if (p2p->ext_listen_interval) { 4008 /* Schedule next extended listen timeout */ 4009 eloop_register_timeout(p2p->ext_listen_interval_sec, 4010 p2p->ext_listen_interval_usec, 4011 p2p_ext_listen_timeout, p2p, NULL); 4012 } 4013 4014 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 4015 /* 4016 * This should not really happen, but it looks like the Listen 4017 * command may fail is something else (e.g., a scan) was 4018 * running at an inconvenient time. As a workaround, allow new 4019 * Extended Listen operation to be started. 4020 */ 4021 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous " 4022 "Extended Listen operation had not been completed - " 4023 "try again"); 4024 p2p->ext_listen_only = 0; 4025 p2p_set_state(p2p, P2P_IDLE); 4026 } 4027 4028 if (p2p->state != P2P_IDLE) { 4029 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended " 4030 "Listen timeout in active state (%s)", 4031 p2p_state_txt(p2p->state)); 4032 return; 4033 } 4034 4035 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout"); 4036 p2p->ext_listen_only = 1; 4037 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 4038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 4039 "Listen state for Extended Listen Timing"); 4040 p2p->ext_listen_only = 0; 4041 } 4042} 4043 4044 4045int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 4046 unsigned int interval) 4047{ 4048 if (period > 65535 || interval > 65535 || period > interval || 4049 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 4050 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4051 "P2P: Invalid Extended Listen Timing request: " 4052 "period=%u interval=%u", period, interval); 4053 return -1; 4054 } 4055 4056 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 4057 4058 if (interval == 0) { 4059 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4060 "P2P: Disabling Extended Listen Timing"); 4061 p2p->ext_listen_period = 0; 4062 p2p->ext_listen_interval = 0; 4063 return 0; 4064 } 4065 4066 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4067 "P2P: Enabling Extended Listen Timing: period %u msec, " 4068 "interval %u msec", period, interval); 4069 p2p->ext_listen_period = period; 4070 p2p->ext_listen_interval = interval; 4071 p2p->ext_listen_interval_sec = interval / 1000; 4072 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 4073 4074 eloop_register_timeout(p2p->ext_listen_interval_sec, 4075 p2p->ext_listen_interval_usec, 4076 p2p_ext_listen_timeout, p2p, NULL); 4077 4078 return 0; 4079} 4080 4081 4082void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4083 const u8 *ie, size_t ie_len) 4084{ 4085 struct p2p_message msg; 4086 4087 if (bssid == NULL || ie == NULL) 4088 return; 4089 4090 os_memset(&msg, 0, sizeof(msg)); 4091 if (p2p_parse_ies(ie, ie_len, &msg)) 4092 return; 4093 if (msg.minor_reason_code == NULL) 4094 return; 4095 4096 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 4097 "P2P: Deauthentication notification BSSID " MACSTR 4098 " reason_code=%u minor_reason_code=%u", 4099 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4100 4101 p2p_parse_free(&msg); 4102} 4103 4104 4105void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4106 const u8 *ie, size_t ie_len) 4107{ 4108 struct p2p_message msg; 4109 4110 if (bssid == NULL || ie == NULL) 4111 return; 4112 4113 os_memset(&msg, 0, sizeof(msg)); 4114 if (p2p_parse_ies(ie, ie_len, &msg)) 4115 return; 4116 if (msg.minor_reason_code == NULL) 4117 return; 4118 4119 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 4120 "P2P: Disassociation notification BSSID " MACSTR 4121 " reason_code=%u minor_reason_code=%u", 4122 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4123 4124 p2p_parse_free(&msg); 4125} 4126 4127 4128void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 4129{ 4130 if (enabled) { 4131 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4132 "Device operations enabled"); 4133 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4134 } else { 4135 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4136 "Device operations disabled"); 4137 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4138 } 4139} 4140 4141 4142int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 4143{ 4144 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0) 4145 return -1; 4146 4147 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: " 4148 "reg_class %u channel %u", reg_class, channel); 4149 p2p->cfg->reg_class = reg_class; 4150 p2p->cfg->channel = channel; 4151 4152 return 0; 4153} 4154 4155 4156int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4157{ 4158 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len); 4159 if (postfix == NULL) { 4160 p2p->cfg->ssid_postfix_len = 0; 4161 return 0; 4162 } 4163 if (len > sizeof(p2p->cfg->ssid_postfix)) 4164 return -1; 4165 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4166 p2p->cfg->ssid_postfix_len = len; 4167 return 0; 4168} 4169 4170 4171int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4172 int cfg_op_channel) 4173{ 4174 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel) 4175 < 0) 4176 return -1; 4177 4178 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: " 4179 "reg_class %u channel %u", op_reg_class, op_channel); 4180 p2p->cfg->op_reg_class = op_reg_class; 4181 p2p->cfg->op_channel = op_channel; 4182 p2p->cfg->cfg_op_channel = cfg_op_channel; 4183 return 0; 4184} 4185 4186 4187int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4188 const struct p2p_channel *pref_chan) 4189{ 4190 struct p2p_channel *n; 4191 4192 if (pref_chan) { 4193 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4194 if (n == NULL) 4195 return -1; 4196 os_memcpy(n, pref_chan, 4197 num_pref_chan * sizeof(struct p2p_channel)); 4198 } else 4199 n = NULL; 4200 4201 os_free(p2p->cfg->pref_chan); 4202 p2p->cfg->pref_chan = n; 4203 p2p->cfg->num_pref_chan = num_pref_chan; 4204 4205 return 0; 4206} 4207 4208 4209int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4210 u8 *iface_addr) 4211{ 4212 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4213 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4214 return -1; 4215 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4216 return 0; 4217} 4218 4219 4220int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4221 u8 *dev_addr) 4222{ 4223 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4224 if (dev == NULL) 4225 return -1; 4226 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4227 return 0; 4228} 4229 4230 4231void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4232{ 4233 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4234 if (is_zero_ether_addr(p2p->peer_filter)) 4235 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer " 4236 "filter"); 4237 else 4238 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer " 4239 "filter for " MACSTR, MAC2STR(p2p->peer_filter)); 4240} 4241 4242 4243void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4244{ 4245 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s", 4246 enabled ? "enabled" : "disabled"); 4247 if (p2p->cross_connect == enabled) 4248 return; 4249 p2p->cross_connect = enabled; 4250 /* TODO: may need to tear down any action group where we are GO(?) */ 4251} 4252 4253 4254int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4255{ 4256 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4257 if (dev == NULL) 4258 return -1; 4259 if (dev->oper_freq <= 0) 4260 return -1; 4261 return dev->oper_freq; 4262} 4263 4264 4265void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4266{ 4267 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s", 4268 enabled ? "enabled" : "disabled"); 4269 p2p->cfg->p2p_intra_bss = enabled; 4270} 4271 4272 4273void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4274{ 4275 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list"); 4276 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4277} 4278 4279 4280int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4281 const u8 *src, const u8 *bssid, const u8 *buf, 4282 size_t len, unsigned int wait_time) 4283{ 4284 if (p2p->p2p_scan_running) { 4285 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action " 4286 "frame TX until p2p_scan completes"); 4287 if (p2p->after_scan_tx) { 4288 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 4289 "previous pending Action frame TX"); 4290 os_free(p2p->after_scan_tx); 4291 } 4292 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4293 len); 4294 if (p2p->after_scan_tx == NULL) 4295 return -1; 4296 p2p->after_scan_tx->freq = freq; 4297 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4298 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4299 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4300 p2p->after_scan_tx->len = len; 4301 p2p->after_scan_tx->wait_time = wait_time; 4302 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4303 return 0; 4304 } 4305 4306 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4307 buf, len, wait_time); 4308} 4309 4310 4311void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4312 int freq_overall) 4313{ 4314 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d," 4315 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall); 4316 p2p->best_freq_24 = freq_24; 4317 p2p->best_freq_5 = freq_5; 4318 p2p->best_freq_overall = freq_overall; 4319} 4320 4321 4322const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4323{ 4324 if (p2p == NULL || p2p->go_neg_peer == NULL) 4325 return NULL; 4326 return p2p->go_neg_peer->info.p2p_device_addr; 4327} 4328 4329 4330const struct p2p_peer_info * 4331p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4332{ 4333 struct p2p_device *dev; 4334 4335 if (addr) { 4336 dev = p2p_get_device(p2p, addr); 4337 if (!dev) 4338 return NULL; 4339 4340 if (!next) { 4341 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4342 return NULL; 4343 4344 return &dev->info; 4345 } else { 4346 do { 4347 dev = dl_list_first(&dev->list, 4348 struct p2p_device, 4349 list); 4350 if (&dev->list == &p2p->devices) 4351 return NULL; 4352 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4353 } 4354 } else { 4355 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4356 if (!dev) 4357 return NULL; 4358 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4359 dev = dl_list_first(&dev->list, 4360 struct p2p_device, 4361 list); 4362 if (&dev->list == &p2p->devices) 4363 return NULL; 4364 } 4365 } 4366 4367 return &dev->info; 4368} 4369 4370#ifdef ANDROID_P2P 4371int p2p_search_in_progress(struct p2p_data *p2p) 4372{ 4373 if (p2p == NULL) 4374 return 0; 4375 4376 return p2p->state == P2P_SEARCH; 4377} 4378#endif 4379 4380int p2p_in_progress(struct p2p_data *p2p) 4381{ 4382 if (p2p == NULL) 4383 return 0; 4384 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4385 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4386 return 2; 4387 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4388} 4389 4390 4391void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4392 u8 client_timeout) 4393{ 4394 if (p2p) { 4395 p2p->go_timeout = go_timeout; 4396 p2p->client_timeout = client_timeout; 4397 } 4398} 4399 4400 4401void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4402{ 4403 if (p2p && p2p->search_delay < delay) 4404 p2p->search_delay = delay; 4405} 4406 4407 4408#ifdef CONFIG_WIFI_DISPLAY 4409 4410static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4411{ 4412 size_t g; 4413 struct p2p_group *group; 4414 4415 for (g = 0; g < p2p->num_groups; g++) { 4416 group = p2p->groups[g]; 4417 p2p_group_update_ies(group); 4418 } 4419} 4420 4421 4422int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4423{ 4424 wpabuf_free(p2p->wfd_ie_beacon); 4425 p2p->wfd_ie_beacon = ie; 4426 p2p_update_wfd_ie_groups(p2p); 4427 return 0; 4428} 4429 4430 4431int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4432{ 4433 wpabuf_free(p2p->wfd_ie_probe_req); 4434 p2p->wfd_ie_probe_req = ie; 4435 return 0; 4436} 4437 4438 4439int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4440{ 4441 wpabuf_free(p2p->wfd_ie_probe_resp); 4442 p2p->wfd_ie_probe_resp = ie; 4443 p2p_update_wfd_ie_groups(p2p); 4444 return 0; 4445} 4446 4447 4448int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4449{ 4450 wpabuf_free(p2p->wfd_ie_assoc_req); 4451 p2p->wfd_ie_assoc_req = ie; 4452 return 0; 4453} 4454 4455 4456int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4457{ 4458 wpabuf_free(p2p->wfd_ie_invitation); 4459 p2p->wfd_ie_invitation = ie; 4460 return 0; 4461} 4462 4463 4464int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4465{ 4466 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4467 p2p->wfd_ie_prov_disc_req = ie; 4468 return 0; 4469} 4470 4471 4472int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4473{ 4474 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4475 p2p->wfd_ie_prov_disc_resp = ie; 4476 return 0; 4477} 4478 4479 4480int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4481{ 4482 wpabuf_free(p2p->wfd_ie_go_neg); 4483 p2p->wfd_ie_go_neg = ie; 4484 return 0; 4485} 4486 4487 4488int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4489{ 4490 wpabuf_free(p2p->wfd_dev_info); 4491 if (elem) { 4492 p2p->wfd_dev_info = wpabuf_dup(elem); 4493 if (p2p->wfd_dev_info == NULL) 4494 return -1; 4495 } else 4496 p2p->wfd_dev_info = NULL; 4497 4498 return 0; 4499} 4500 4501 4502int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4503{ 4504 wpabuf_free(p2p->wfd_assoc_bssid); 4505 if (elem) { 4506 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4507 if (p2p->wfd_assoc_bssid == NULL) 4508 return -1; 4509 } else 4510 p2p->wfd_assoc_bssid = NULL; 4511 4512 return 0; 4513} 4514 4515 4516int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4517 const struct wpabuf *elem) 4518{ 4519 wpabuf_free(p2p->wfd_coupled_sink_info); 4520 if (elem) { 4521 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4522 if (p2p->wfd_coupled_sink_info == NULL) 4523 return -1; 4524 } else 4525 p2p->wfd_coupled_sink_info = NULL; 4526 4527 return 0; 4528} 4529 4530#endif /* CONFIG_WIFI_DISPLAY */ 4531 4532 4533int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4534 int max_disc_tu) 4535{ 4536 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4537 return -1; 4538 4539 p2p->min_disc_int = min_disc_int; 4540 p2p->max_disc_int = max_disc_int; 4541 p2p->max_disc_tu = max_disc_tu; 4542 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: " 4543 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int, 4544 max_disc_tu); 4545 4546 return 0; 4547} 4548