p2p.c revision d5e4923d04122f81300fa68fb07d64ede28fd44d
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->wps_method = WPS_NOT_READY; 245 p2p->go_neg_peer = NULL; 246 247 os_memset(&res, 0, sizeof(res)); 248 res.status = status; 249 if (peer) { 250 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, 251 ETH_ALEN); 252 os_memcpy(res.peer_interface_addr, peer->intended_addr, 253 ETH_ALEN); 254 } 255 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 256} 257 258 259static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 260{ 261 unsigned int r, tu; 262 int freq; 263 struct wpabuf *ies; 264 265 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 266 "P2P: Starting short listen state (state=%s)", 267 p2p_state_txt(p2p->state)); 268 269 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 270 p2p->cfg->channel); 271 if (freq < 0) { 272 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 273 "P2P: Unknown regulatory class/channel"); 274 return; 275 } 276 277 os_get_random((u8 *) &r, sizeof(r)); 278 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 279 p2p->min_disc_int) * 100; 280 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 281 tu = p2p->max_disc_tu; 282 if (!dev_disc && tu < 100) 283 tu = 100; /* Need to wait in non-device discovery use cases */ 284 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 285 tu = p2p->cfg->max_listen * 1000 / 1024; 286 287 if (tu == 0) { 288 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip listen state " 289 "since duration was 0 TU"); 290 p2p_set_timeout(p2p, 0, 0); 291 return; 292 } 293 294 p2p->pending_listen_freq = freq; 295 p2p->pending_listen_sec = 0; 296 p2p->pending_listen_usec = 1024 * tu; 297 298 ies = p2p_build_probe_resp_ies(p2p); 299 if (ies == NULL) 300 return; 301 302 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 303 ies) < 0) { 304 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 305 "P2P: Failed to start listen mode"); 306 p2p->pending_listen_freq = 0; 307 } 308 wpabuf_free(ies); 309} 310 311 312int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 313{ 314 int freq; 315 struct wpabuf *ies; 316 317 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 318 "P2P: Going to listen(only) state"); 319 320 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class, 321 p2p->cfg->channel); 322 if (freq < 0) { 323 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 324 "P2P: Unknown regulatory class/channel"); 325 return -1; 326 } 327 328 p2p->pending_listen_freq = freq; 329 p2p->pending_listen_sec = timeout / 1000; 330 p2p->pending_listen_usec = (timeout % 1000) * 1000; 331 332 if (p2p->p2p_scan_running) { 333 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 335 "P2P: p2p_scan running - connect is already " 336 "pending - skip listen"); 337 return 0; 338 } 339 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 340 "P2P: p2p_scan running - delay start of listen state"); 341 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 342 return 0; 343 } 344 345 ies = p2p_build_probe_resp_ies(p2p); 346 if (ies == NULL) 347 return -1; 348 349 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 351 "P2P: Failed to start listen mode"); 352 p2p->pending_listen_freq = 0; 353 wpabuf_free(ies); 354 return -1; 355 } 356 wpabuf_free(ies); 357 358 p2p_set_state(p2p, P2P_LISTEN_ONLY); 359 360 return 0; 361} 362 363 364static void p2p_device_clear_reported(struct p2p_data *p2p) 365{ 366 struct p2p_device *dev; 367 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) 368 dev->flags &= ~P2P_DEV_REPORTED; 369} 370 371 372/** 373 * p2p_get_device - Fetch a peer entry 374 * @p2p: P2P module context from p2p_init() 375 * @addr: P2P Device Address of the peer 376 * Returns: Pointer to the device entry or %NULL if not found 377 */ 378struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 379{ 380 struct p2p_device *dev; 381 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 382 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 383 return dev; 384 } 385 return NULL; 386} 387 388 389/** 390 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 391 * @p2p: P2P module context from p2p_init() 392 * @addr: P2P Interface Address of the peer 393 * Returns: Pointer to the device entry or %NULL if not found 394 */ 395struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 396 const u8 *addr) 397{ 398 struct p2p_device *dev; 399 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 400 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 401 return dev; 402 } 403 return NULL; 404} 405 406 407/** 408 * p2p_create_device - Create a peer entry 409 * @p2p: P2P module context from p2p_init() 410 * @addr: P2P Device Address of the peer 411 * Returns: Pointer to the device entry or %NULL on failure 412 * 413 * If there is already an entry for the peer, it will be returned instead of 414 * creating a new one. 415 */ 416static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 417 const u8 *addr) 418{ 419 struct p2p_device *dev, *oldest = NULL; 420 size_t count = 0; 421 422 dev = p2p_get_device(p2p, addr); 423 if (dev) 424 return dev; 425 426 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 427 count++; 428 if (oldest == NULL || 429 os_time_before(&dev->last_seen, &oldest->last_seen)) 430 oldest = dev; 431 } 432 if (count + 1 > p2p->cfg->max_peers && oldest) { 433 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 434 "P2P: Remove oldest peer entry to make room for a new " 435 "peer"); 436#ifdef ANDROID_P2P 437 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */ 438 if(&oldest->list == p2p->sd_dev_list) 439 p2p->sd_dev_list = oldest->list.next; 440#endif 441 dl_list_del(&oldest->list); 442 p2p_device_free(p2p, oldest); 443 } 444 445 dev = os_zalloc(sizeof(*dev)); 446 if (dev == NULL) 447 return NULL; 448 dl_list_add(&p2p->devices, &dev->list); 449 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 450 451 return dev; 452} 453 454 455static void p2p_copy_client_info(struct p2p_device *dev, 456 struct p2p_client_info *cli) 457{ 458 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len); 459 dev->info.device_name[cli->dev_name_len] = '\0'; 460 dev->info.dev_capab = cli->dev_capab; 461 dev->info.config_methods = cli->config_methods; 462 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 463 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 464 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 465 dev->info.wps_sec_dev_type_list_len); 466} 467 468 469static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 470 const u8 *go_interface_addr, int freq, 471 const u8 *gi, size_t gi_len) 472{ 473 struct p2p_group_info info; 474 size_t c; 475 struct p2p_device *dev; 476 477 if (gi == NULL) 478 return 0; 479 480 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 481 return -1; 482 483 /* 484 * Clear old data for this group; if the devices are still in the 485 * group, the information will be restored in the loop following this. 486 */ 487 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 488 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 489 ETH_ALEN) == 0) { 490 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 491 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 492 } 493 } 494 495 for (c = 0; c < info.num_clients; c++) { 496 struct p2p_client_info *cli = &info.client[c]; 497 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 498 ETH_ALEN) == 0) 499 continue; /* ignore our own entry */ 500 dev = p2p_get_device(p2p, cli->p2p_device_addr); 501 if (dev) { 502 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 503 P2P_DEV_PROBE_REQ_ONLY)) { 504 /* 505 * Update information since we have not 506 * received this directly from the client. 507 */ 508 p2p_copy_client_info(dev, cli); 509 } else { 510 /* 511 * Need to update P2P Client Discoverability 512 * flag since it is valid only in P2P Group 513 * Info attribute. 514 */ 515 dev->info.dev_capab &= 516 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 517 dev->info.dev_capab |= 518 cli->dev_capab & 519 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 520 } 521 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 522 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 523 } 524 } else { 525 dev = p2p_create_device(p2p, cli->p2p_device_addr); 526 if (dev == NULL) 527 continue; 528 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 529 p2p_copy_client_info(dev, cli); 530 dev->oper_freq = freq; 531 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 532 dev->info.p2p_device_addr, 533 &dev->info, 1); 534 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 535 } 536 537 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 538 ETH_ALEN); 539 os_get_time(&dev->last_seen); 540 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 541 os_memcpy(dev->member_in_go_iface, go_interface_addr, 542 ETH_ALEN); 543 } 544 545 return 0; 546} 547 548 549static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req, 550 const struct p2p_message *msg) 551{ 552 os_memcpy(dev->info.device_name, msg->device_name, 553 sizeof(dev->info.device_name)); 554 555 if (msg->manufacturer && 556 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 557 os_memset(dev->info.manufacturer, 0, 558 sizeof(dev->info.manufacturer)); 559 os_memcpy(dev->info.manufacturer, msg->manufacturer, 560 msg->manufacturer_len); 561 } 562 563 if (msg->model_name && 564 msg->model_name_len < sizeof(dev->info.model_name)) { 565 os_memset(dev->info.model_name, 0, 566 sizeof(dev->info.model_name)); 567 os_memcpy(dev->info.model_name, msg->model_name, 568 msg->model_name_len); 569 } 570 571 if (msg->model_number && 572 msg->model_number_len < sizeof(dev->info.model_number)) { 573 os_memset(dev->info.model_number, 0, 574 sizeof(dev->info.model_number)); 575 os_memcpy(dev->info.model_number, msg->model_number, 576 msg->model_number_len); 577 } 578 579 if (msg->serial_number && 580 msg->serial_number_len < sizeof(dev->info.serial_number)) { 581 os_memset(dev->info.serial_number, 0, 582 sizeof(dev->info.serial_number)); 583 os_memcpy(dev->info.serial_number, msg->serial_number, 584 msg->serial_number_len); 585 } 586 587 if (msg->pri_dev_type) 588 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 589 sizeof(dev->info.pri_dev_type)); 590 else if (msg->wps_pri_dev_type) 591 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 592 sizeof(dev->info.pri_dev_type)); 593 594 if (msg->wps_sec_dev_type_list) { 595 os_memcpy(dev->info.wps_sec_dev_type_list, 596 msg->wps_sec_dev_type_list, 597 msg->wps_sec_dev_type_list_len); 598 dev->info.wps_sec_dev_type_list_len = 599 msg->wps_sec_dev_type_list_len; 600 } 601 602 if (msg->capability) { 603 /* 604 * P2P Client Discoverability bit is reserved in all frames 605 * that use this function, so do not change its value here. 606 */ 607 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 608 dev->info.dev_capab |= msg->capability[0] & 609 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 610 dev->info.group_capab = msg->capability[1]; 611 } 612 613 if (msg->ext_listen_timing) { 614 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 615 dev->ext_listen_interval = 616 WPA_GET_LE16(msg->ext_listen_timing + 2); 617 } 618 619 if (!probe_req) { 620 dev->info.config_methods = msg->config_methods ? 621 msg->config_methods : msg->wps_config_methods; 622 } 623} 624 625 626/** 627 * p2p_add_device - Add peer entries based on scan results or P2P frames 628 * @p2p: P2P module context from p2p_init() 629 * @addr: Source address of Beacon or Probe Response frame (may be either 630 * P2P Device Address or P2P Interface Address) 631 * @level: Signal level (signal strength of the received frame from the peer) 632 * @freq: Frequency on which the Beacon or Probe Response frame was received 633 * @ies: IEs from the Beacon or Probe Response frame 634 * @ies_len: Length of ies buffer in octets 635 * @scan_res: Whether this was based on scan results 636 * Returns: 0 on success, -1 on failure 637 * 638 * If the scan result is for a GO, the clients in the group will also be added 639 * to the peer table. This function can also be used with some other frames 640 * like Provision Discovery Request that contains P2P Capability and P2P Device 641 * Info attributes. 642 */ 643int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level, 644 const u8 *ies, size_t ies_len, int scan_res) 645{ 646 struct p2p_device *dev; 647 struct p2p_message msg; 648 const u8 *p2p_dev_addr; 649 int i; 650 651 os_memset(&msg, 0, sizeof(msg)); 652 if (p2p_parse_ies(ies, ies_len, &msg)) { 653 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 654 "P2P: Failed to parse P2P IE for a device entry"); 655 p2p_parse_free(&msg); 656 return -1; 657 } 658 659 if (msg.p2p_device_addr) 660 p2p_dev_addr = msg.p2p_device_addr; 661 else if (msg.device_id) 662 p2p_dev_addr = msg.device_id; 663 else { 664 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 665 "P2P: Ignore scan data without P2P Device Info or " 666 "P2P Device Id"); 667 p2p_parse_free(&msg); 668 return -1; 669 } 670 671 if (!is_zero_ether_addr(p2p->peer_filter) && 672 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 673 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer " 674 "filter for " MACSTR " due to peer filter", 675 MAC2STR(p2p_dev_addr)); 676 return 0; 677 } 678 679 dev = p2p_create_device(p2p, p2p_dev_addr); 680 if (dev == NULL) { 681 p2p_parse_free(&msg); 682 return -1; 683 } 684 os_get_time(&dev->last_seen); 685 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 686 687 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 688 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 689 if (msg.ssid && 690 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 691 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 692 != 0)) { 693 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 694 dev->oper_ssid_len = msg.ssid[1]; 695 } 696 697 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 698 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 699 int ds_freq; 700 if (*msg.ds_params == 14) 701 ds_freq = 2484; 702 else 703 ds_freq = 2407 + *msg.ds_params * 5; 704 if (freq != ds_freq) { 705 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 706 "P2P: Update Listen frequency based on DS " 707 "Parameter Set IE: %d -> %d MHz", 708 freq, ds_freq); 709 freq = ds_freq; 710 } 711 } 712 713 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 715 "P2P: Update Listen frequency based on scan " 716 "results (" MACSTR " %d -> %d MHz (DS param %d)", 717 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 718 freq, msg.ds_params ? *msg.ds_params : -1); 719 } 720 if (scan_res) { 721 dev->listen_freq = freq; 722 if (msg.group_info) 723 dev->oper_freq = freq; 724 } 725 dev->info.level = level; 726 727 p2p_copy_wps_info(dev, 0, &msg); 728 729 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 730 wpabuf_free(dev->info.wps_vendor_ext[i]); 731 dev->info.wps_vendor_ext[i] = NULL; 732 } 733 734 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 735 if (msg.wps_vendor_ext[i] == NULL) 736 break; 737 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 738 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 739 if (dev->info.wps_vendor_ext[i] == NULL) 740 break; 741 } 742 743 if (msg.wfd_subelems) { 744 wpabuf_free(dev->info.wfd_subelems); 745 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 746 } 747 748 if (scan_res) { 749 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 750 msg.group_info, msg.group_info_len); 751 } 752 753 p2p_parse_free(&msg); 754 755 if (p2p_pending_sd_req(p2p, dev)) 756 dev->flags |= P2P_DEV_SD_SCHEDULE; 757 758 if (dev->flags & P2P_DEV_REPORTED) 759 return 0; 760 761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 762 "P2P: Peer found with Listen frequency %d MHz", freq); 763 if (dev->flags & P2P_DEV_USER_REJECTED) { 764 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 765 "P2P: Do not report rejected device"); 766 return 0; 767 } 768 769 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 770 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 771 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 772 773 return 0; 774} 775 776 777static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 778{ 779 int i; 780 781 if (p2p->go_neg_peer == dev) { 782 /* 783 * If GO Negotiation is in progress, report that it has failed. 784 */ 785 p2p_go_neg_failed(p2p, dev, -1); 786 p2p->go_neg_peer = NULL; 787 } 788 if (p2p->invite_peer == dev) 789 p2p->invite_peer = NULL; 790 if (p2p->sd_peer == dev) 791 p2p->sd_peer = NULL; 792 if (p2p->pending_client_disc_go == dev) 793 p2p->pending_client_disc_go = NULL; 794 795 /* dev_lost() device, but only if it was previously dev_found() */ 796 if (dev->flags & P2P_DEV_REPORTED_ONCE) 797 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 798 dev->info.p2p_device_addr); 799 800 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 801 wpabuf_free(dev->info.wps_vendor_ext[i]); 802 dev->info.wps_vendor_ext[i] = NULL; 803 } 804 805 wpabuf_free(dev->info.wfd_subelems); 806 807 os_free(dev); 808} 809 810 811static int p2p_get_next_prog_freq(struct p2p_data *p2p) 812{ 813 struct p2p_channels *c; 814 struct p2p_reg_class *cla; 815 size_t cl, ch; 816 int found = 0; 817 u8 reg_class; 818 u8 channel; 819 int freq; 820 821 c = &p2p->cfg->channels; 822 for (cl = 0; cl < c->reg_classes; cl++) { 823 cla = &c->reg_class[cl]; 824 if (cla->reg_class != p2p->last_prog_scan_class) 825 continue; 826 for (ch = 0; ch < cla->channels; ch++) { 827 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 828 found = 1; 829 break; 830 } 831 } 832 if (found) 833 break; 834 } 835 836 if (!found) { 837 /* Start from beginning */ 838 reg_class = c->reg_class[0].reg_class; 839 channel = c->reg_class[0].channel[0]; 840 } else { 841 /* Pick the next channel */ 842 ch++; 843 if (ch == cla->channels) { 844 cl++; 845 if (cl == c->reg_classes) 846 cl = 0; 847 ch = 0; 848 } 849 reg_class = c->reg_class[cl].reg_class; 850 channel = c->reg_class[cl].channel[ch]; 851 } 852 853 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel); 854 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search " 855 "channel: reg_class %u channel %u -> %d MHz", 856 reg_class, channel, freq); 857 p2p->last_prog_scan_class = reg_class; 858 p2p->last_prog_scan_chan = channel; 859 860 if (freq == 2412 || freq == 2437 || freq == 2462) 861 return 0; /* No need to add social channels */ 862 return freq; 863} 864 865 866static void p2p_search(struct p2p_data *p2p) 867{ 868 int freq = 0; 869 enum p2p_scan_type type; 870 u16 pw_id = DEV_PW_DEFAULT; 871 int res; 872 873 if (p2p->drv_in_listen) { 874 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still " 875 "in Listen state - wait for it to end before " 876 "continuing"); 877 return; 878 } 879 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 880 881 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 882 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 883 type = P2P_SCAN_SOCIAL_PLUS_ONE; 884 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search " 885 "(+ freq %u)", freq); 886 } else { 887 type = P2P_SCAN_SOCIAL; 888 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search"); 889 } 890 891 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 892 p2p->num_req_dev_types, p2p->req_dev_types, 893 p2p->find_dev_id, pw_id); 894 if (res < 0) { 895 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 896 "P2P: Scan request failed"); 897 p2p_continue_find(p2p); 898 } else if (res == 1) { 899 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 900 "p2p_scan at this point - will try again after " 901 "previous scan completes"); 902 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 903 } else { 904 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 905 p2p->p2p_scan_running = 1; 906 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 907 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 908 p2p, NULL); 909 } 910} 911 912 913static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 914{ 915 struct p2p_data *p2p = eloop_ctx; 916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop"); 917 p2p_stop_find(p2p); 918} 919 920 921static int p2p_run_after_scan(struct p2p_data *p2p) 922{ 923 struct p2p_device *dev; 924 enum p2p_after_scan op; 925 926 if (p2p->after_scan_tx) { 927 /* TODO: schedule p2p_run_after_scan to be called from TX 928 * status callback(?) */ 929 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending " 930 "Action frame at p2p_scan completion"); 931 p2p->cfg->send_action(p2p->cfg->cb_ctx, 932 p2p->after_scan_tx->freq, 933 p2p->after_scan_tx->dst, 934 p2p->after_scan_tx->src, 935 p2p->after_scan_tx->bssid, 936 (u8 *) (p2p->after_scan_tx + 1), 937 p2p->after_scan_tx->len, 938 p2p->after_scan_tx->wait_time); 939 os_free(p2p->after_scan_tx); 940 p2p->after_scan_tx = NULL; 941#ifdef ANDROID_P2P 942 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 943 * At that moment, we will send the SD response from this context. After sending the SD response, 944 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 945 */ 946 return 0; 947#else 948 return 1; 949#endif 950 } 951 952 op = p2p->start_after_scan; 953 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 954 switch (op) { 955 case P2P_AFTER_SCAN_NOTHING: 956 break; 957 case P2P_AFTER_SCAN_LISTEN: 958 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 959 "requested Listen state"); 960 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 961 p2p->pending_listen_usec / 1000); 962 return 1; 963 case P2P_AFTER_SCAN_CONNECT: 964 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 965 "requested connect with " MACSTR, 966 MAC2STR(p2p->after_scan_peer)); 967 dev = p2p_get_device(p2p, p2p->after_scan_peer); 968 if (dev == NULL) { 969 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not " 970 "known anymore"); 971 break; 972 } 973 p2p_connect_send(p2p, dev); 974 return 1; 975 } 976 977 return 0; 978} 979 980 981static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 982{ 983 struct p2p_data *p2p = eloop_ctx; 984 int running; 985 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout " 986 "(running=%d)", p2p->p2p_scan_running); 987 running = p2p->p2p_scan_running; 988 /* Make sure we recover from missed scan results callback */ 989 p2p->p2p_scan_running = 0; 990 991 if (running) 992 p2p_run_after_scan(p2p); 993} 994 995 996static void p2p_free_req_dev_types(struct p2p_data *p2p) 997{ 998 p2p->num_req_dev_types = 0; 999 os_free(p2p->req_dev_types); 1000 p2p->req_dev_types = NULL; 1001} 1002 1003 1004int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1005 enum p2p_discovery_type type, 1006 unsigned int num_req_dev_types, const u8 *req_dev_types, 1007 const u8 *dev_id, unsigned int search_delay) 1008{ 1009 int res; 1010 1011 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)", 1012 type); 1013 if (p2p->p2p_scan_running) { 1014 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is " 1015 "already running"); 1016 } 1017 1018 p2p_free_req_dev_types(p2p); 1019 if (req_dev_types && num_req_dev_types) { 1020 p2p->req_dev_types = os_malloc(num_req_dev_types * 1021 WPS_DEV_TYPE_LEN); 1022 if (p2p->req_dev_types == NULL) 1023 return -1; 1024 os_memcpy(p2p->req_dev_types, req_dev_types, 1025 num_req_dev_types * WPS_DEV_TYPE_LEN); 1026 p2p->num_req_dev_types = num_req_dev_types; 1027 } 1028 1029 if (dev_id) { 1030 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1031 p2p->find_dev_id = p2p->find_dev_id_buf; 1032 } else 1033 p2p->find_dev_id = NULL; 1034 1035 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1036 p2p_clear_timeout(p2p); 1037 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1038 p2p->find_type = type; 1039 p2p_device_clear_reported(p2p); 1040 p2p_set_state(p2p, P2P_SEARCH); 1041 p2p->search_delay = search_delay; 1042 p2p->in_search_delay = 0; 1043 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1044 p2p->last_p2p_find_timeout = timeout; 1045 if (timeout) 1046 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1047 p2p, NULL); 1048 switch (type) { 1049 case P2P_FIND_START_WITH_FULL: 1050 case P2P_FIND_PROGRESSIVE: 1051 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1052 p2p->num_req_dev_types, 1053 p2p->req_dev_types, dev_id, 1054 DEV_PW_DEFAULT); 1055 break; 1056 case P2P_FIND_ONLY_SOCIAL: 1057 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1058 p2p->num_req_dev_types, 1059 p2p->req_dev_types, dev_id, 1060 DEV_PW_DEFAULT); 1061 break; 1062 default: 1063 return -1; 1064 } 1065 1066 if (res == 0) { 1067 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 1068 p2p->p2p_scan_running = 1; 1069 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1070 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1071 p2p, NULL); 1072 } else if (res == 1) { 1073 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 1074 "p2p_scan at this point - will try again after " 1075 "previous scan completes"); 1076 res = 0; 1077 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1078 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1079 } else { 1080 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 1081 "p2p_scan"); 1082 p2p_set_state(p2p, P2P_IDLE); 1083 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1084 } 1085 1086 return res; 1087} 1088 1089#ifdef ANDROID_P2P 1090int p2p_search_pending(struct p2p_data *p2p) 1091{ 1092 if(p2p == NULL) 1093 return 0; 1094 1095 if(p2p->state == P2P_SEARCH_WHEN_READY) 1096 return 1; 1097 1098 return 0; 1099} 1100#endif 1101 1102int p2p_other_scan_completed(struct p2p_data *p2p) 1103{ 1104 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1105 p2p_set_state(p2p, P2P_SEARCH); 1106 p2p_search(p2p); 1107 return 1; 1108 } 1109 if (p2p->state != P2P_SEARCH_WHEN_READY) 1110 return 0; 1111 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find " 1112 "now that previous scan was completed"); 1113 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1114 p2p->num_req_dev_types, p2p->req_dev_types, 1115 p2p->find_dev_id, p2p->search_delay) < 0) 1116 return 0; 1117 return 1; 1118} 1119 1120 1121void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1122{ 1123 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find"); 1124 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1125 p2p_clear_timeout(p2p); 1126 if (p2p->state == P2P_SEARCH) 1127 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1128 p2p_set_state(p2p, P2P_IDLE); 1129 p2p_free_req_dev_types(p2p); 1130 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1131 p2p->go_neg_peer = NULL; 1132 p2p->sd_peer = NULL; 1133 p2p->invite_peer = NULL; 1134 p2p_stop_listen_for_freq(p2p, freq); 1135} 1136 1137 1138void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1139{ 1140 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1141 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen " 1142 "since we are on correct channel for response"); 1143 return; 1144 } 1145 if (p2p->in_listen) { 1146 p2p->in_listen = 0; 1147 p2p_clear_timeout(p2p); 1148 } 1149 if (p2p->drv_in_listen) { 1150 /* 1151 * The driver may not deliver callback to p2p_listen_end() 1152 * when the operation gets canceled, so clear the internal 1153 * variable that is tracking driver state. 1154 */ 1155 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear " 1156 "drv_in_listen (%d)", p2p->drv_in_listen); 1157 p2p->drv_in_listen = 0; 1158 } 1159 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1160} 1161 1162 1163void p2p_stop_find(struct p2p_data *p2p) 1164{ 1165 p2p_stop_find_for_freq(p2p, 0); 1166} 1167 1168 1169static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq, 1170 unsigned int pref_freq) 1171{ 1172 if (force_freq || pref_freq) { 1173 u8 op_reg_class, op_channel; 1174 unsigned int freq = force_freq ? force_freq : pref_freq; 1175 if (p2p_freq_to_channel(p2p->cfg->country, freq, 1176 &op_reg_class, &op_channel) < 0) { 1177 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1178 "P2P: Unsupported frequency %u MHz", 1179 freq); 1180 return -1; 1181 } 1182 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class, 1183 op_channel)) { 1184 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1185 "P2P: Frequency %u MHz (oper_class %u " 1186 "channel %u) not allowed for P2P", 1187 freq, op_reg_class, op_channel); 1188 return -1; 1189 } 1190 p2p->op_reg_class = op_reg_class; 1191 p2p->op_channel = op_channel; 1192 if (force_freq) { 1193 p2p->channels.reg_classes = 1; 1194 p2p->channels.reg_class[0].channels = 1; 1195 p2p->channels.reg_class[0].reg_class = 1196 p2p->op_reg_class; 1197 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1198 } else { 1199 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1200 sizeof(struct p2p_channels)); 1201 } 1202 } else { 1203 u8 op_reg_class, op_channel; 1204 1205 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1206 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1207 p2p_freq_to_channel(p2p->cfg->country, 1208 p2p->best_freq_overall, 1209 &op_reg_class, &op_channel) == 0) { 1210 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1211 "P2P: Select best overall channel as " 1212 "operating channel preference"); 1213 p2p->op_reg_class = op_reg_class; 1214 p2p->op_channel = op_channel; 1215 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1216 p2p_supported_freq(p2p, p2p->best_freq_5) && 1217 p2p_freq_to_channel(p2p->cfg->country, 1218 p2p->best_freq_5, 1219 &op_reg_class, &op_channel) == 1220 0) { 1221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1222 "P2P: Select best 5 GHz channel as " 1223 "operating channel preference"); 1224 p2p->op_reg_class = op_reg_class; 1225 p2p->op_channel = op_channel; 1226 } else if (!p2p->cfg->cfg_op_channel && 1227 p2p->best_freq_24 > 0 && 1228 p2p_supported_freq(p2p, p2p->best_freq_24) && 1229 p2p_freq_to_channel(p2p->cfg->country, 1230 p2p->best_freq_24, 1231 &op_reg_class, &op_channel) == 1232 0) { 1233 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1234 "P2P: Select best 2.4 GHz channel as " 1235 "operating channel preference"); 1236 p2p->op_reg_class = op_reg_class; 1237 p2p->op_channel = op_channel; 1238 } else { 1239 p2p->op_reg_class = p2p->cfg->op_reg_class; 1240 p2p->op_channel = p2p->cfg->op_channel; 1241 } 1242 1243 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1244 sizeof(struct p2p_channels)); 1245 } 1246 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1247 "P2P: Own preference for operation channel: " 1248 "Operating Class %u Channel %u%s", 1249 p2p->op_reg_class, p2p->op_channel, 1250 force_freq ? " (forced)" : ""); 1251 1252 return 0; 1253} 1254 1255 1256static void p2p_set_dev_persistent(struct p2p_device *dev, 1257 int persistent_group) 1258{ 1259 switch (persistent_group) { 1260 case 0: 1261 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1262 P2P_DEV_PREFER_PERSISTENT_RECONN); 1263 break; 1264 case 1: 1265 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1266 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1267 break; 1268 case 2: 1269 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1270 P2P_DEV_PREFER_PERSISTENT_RECONN; 1271 break; 1272 } 1273} 1274 1275 1276int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1277 enum p2p_wps_method wps_method, 1278 int go_intent, const u8 *own_interface_addr, 1279 unsigned int force_freq, int persistent_group, 1280 const u8 *force_ssid, size_t force_ssid_len, 1281 int pd_before_go_neg, unsigned int pref_freq) 1282{ 1283 struct p2p_device *dev; 1284 1285 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1286 "P2P: Request to start group negotiation - peer=" MACSTR 1287 " GO Intent=%d Intended Interface Address=" MACSTR 1288 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1289 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1290 wps_method, persistent_group, pd_before_go_neg); 1291 1292 if (p2p_prepare_channel(p2p, force_freq, pref_freq) < 0) 1293 return -1; 1294 1295 dev = p2p_get_device(p2p, peer_addr); 1296 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1297 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1298 "P2P: Cannot connect to unknown P2P Device " MACSTR, 1299 MAC2STR(peer_addr)); 1300 return -1; 1301 } 1302 1303 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1304 if (!(dev->info.dev_capab & 1305 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1306 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1307 "P2P: Cannot connect to P2P Device " MACSTR 1308 " that is in a group and is not discoverable", 1309 MAC2STR(peer_addr)); 1310 return -1; 1311 } 1312 if (dev->oper_freq <= 0) { 1313 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1314 "P2P: Cannot connect to P2P Device " MACSTR 1315 " with incomplete information", 1316 MAC2STR(peer_addr)); 1317 return -1; 1318 } 1319 1320 /* 1321 * First, try to connect directly. If the peer does not 1322 * acknowledge frames, assume it is sleeping and use device 1323 * discoverability via the GO at that point. 1324 */ 1325 } 1326 1327 p2p->ssid_set = 0; 1328 if (force_ssid) { 1329 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1330 force_ssid, force_ssid_len); 1331 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1332 p2p->ssid_len = force_ssid_len; 1333 p2p->ssid_set = 1; 1334 } 1335 1336 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1337 dev->flags &= ~P2P_DEV_USER_REJECTED; 1338 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1339 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1340 if (pd_before_go_neg) 1341 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1342 else 1343 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1344 dev->connect_reqs = 0; 1345 dev->go_neg_req_sent = 0; 1346 dev->go_state = UNKNOWN_GO; 1347 p2p_set_dev_persistent(dev, persistent_group); 1348 p2p->go_intent = go_intent; 1349 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1350 1351 if (p2p->state != P2P_IDLE) 1352 p2p_stop_find(p2p); 1353 1354 if (p2p->after_scan_tx) { 1355 /* 1356 * We need to drop the pending frame to avoid issues with the 1357 * new GO Negotiation, e.g., when the pending frame was from a 1358 * previous attempt at starting a GO Negotiation. 1359 */ 1360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 1361 "previous pending Action frame TX that was waiting " 1362 "for p2p_scan completion"); 1363 os_free(p2p->after_scan_tx); 1364 p2p->after_scan_tx = NULL; 1365 } 1366 1367 dev->wps_method = wps_method; 1368 dev->status = P2P_SC_SUCCESS; 1369 1370 if (force_freq) 1371 dev->flags |= P2P_DEV_FORCE_FREQ; 1372 else 1373 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1374 1375 if (p2p->p2p_scan_running) { 1376 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1377 "P2P: p2p_scan running - delay connect send"); 1378 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1379 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1380 return 0; 1381 } 1382 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1383 1384 return p2p_connect_send(p2p, dev); 1385} 1386 1387 1388int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1389 enum p2p_wps_method wps_method, 1390 int go_intent, const u8 *own_interface_addr, 1391 unsigned int force_freq, int persistent_group, 1392 const u8 *force_ssid, size_t force_ssid_len, 1393 unsigned int pref_freq) 1394{ 1395 struct p2p_device *dev; 1396 1397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1398 "P2P: Request to authorize group negotiation - peer=" MACSTR 1399 " GO Intent=%d Intended Interface Address=" MACSTR 1400 " wps_method=%d persistent_group=%d", 1401 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1402 wps_method, persistent_group); 1403 1404 if (p2p_prepare_channel(p2p, force_freq, pref_freq) < 0) 1405 return -1; 1406 1407 dev = p2p_get_device(p2p, peer_addr); 1408 if (dev == NULL) { 1409 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1410 "P2P: Cannot authorize unknown P2P Device " MACSTR, 1411 MAC2STR(peer_addr)); 1412 return -1; 1413 } 1414 1415 p2p->ssid_set = 0; 1416 if (force_ssid) { 1417 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1418 force_ssid, force_ssid_len); 1419 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1420 p2p->ssid_len = force_ssid_len; 1421 p2p->ssid_set = 1; 1422 } 1423 1424 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1425 dev->flags &= ~P2P_DEV_USER_REJECTED; 1426 dev->go_neg_req_sent = 0; 1427 dev->go_state = UNKNOWN_GO; 1428 p2p_set_dev_persistent(dev, persistent_group); 1429 p2p->go_intent = go_intent; 1430 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1431 1432 dev->wps_method = wps_method; 1433 dev->status = P2P_SC_SUCCESS; 1434 1435 if (force_freq) 1436 dev->flags |= P2P_DEV_FORCE_FREQ; 1437 else 1438 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1439 1440 return 0; 1441} 1442 1443 1444void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1445 struct p2p_device *dev, struct p2p_message *msg) 1446{ 1447 os_get_time(&dev->last_seen); 1448 1449 p2p_copy_wps_info(dev, 0, msg); 1450 1451 if (msg->listen_channel) { 1452 int freq; 1453 freq = p2p_channel_to_freq((char *) msg->listen_channel, 1454 msg->listen_channel[3], 1455 msg->listen_channel[4]); 1456 if (freq < 0) { 1457 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1458 "P2P: Unknown peer Listen channel: " 1459 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1460 msg->listen_channel[0], 1461 msg->listen_channel[1], 1462 msg->listen_channel[2], 1463 msg->listen_channel[3], 1464 msg->listen_channel[4]); 1465 } else { 1466 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update " 1467 "peer " MACSTR " Listen channel: %u -> %u MHz", 1468 MAC2STR(dev->info.p2p_device_addr), 1469 dev->listen_freq, freq); 1470 dev->listen_freq = freq; 1471 } 1472 } 1473 1474 if (msg->wfd_subelems) { 1475 wpabuf_free(dev->info.wfd_subelems); 1476 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1477 } 1478 1479 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1480 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1481 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1482 "P2P: Completed device entry based on data from " 1483 "GO Negotiation Request"); 1484 } else { 1485 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1486 "P2P: Created device entry based on GO Neg Req: " 1487 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1488 "listen_freq=%d", 1489 MAC2STR(dev->info.p2p_device_addr), 1490 dev->info.dev_capab, dev->info.group_capab, 1491 dev->info.device_name, dev->listen_freq); 1492 } 1493 1494 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1495 1496 if (dev->flags & P2P_DEV_USER_REJECTED) { 1497 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1498 "P2P: Do not report rejected device"); 1499 return; 1500 } 1501 1502 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1503 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1504 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1505} 1506 1507 1508void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1509{ 1510 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1511 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1512 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1513 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1514 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1515} 1516 1517 1518int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1519{ 1520 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1521 p2p_random(params->passphrase, 8); 1522 return 0; 1523} 1524 1525 1526void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1527{ 1528 struct p2p_go_neg_results res; 1529 int go = peer->go_state == LOCAL_GO; 1530 struct p2p_channels intersection; 1531 int freqs; 1532 size_t i, j; 1533 1534 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1535 "P2P: GO Negotiation with " MACSTR " completed (%s will be " 1536 "GO)", MAC2STR(peer->info.p2p_device_addr), 1537 go ? "local end" : "peer"); 1538 1539 os_memset(&res, 0, sizeof(res)); 1540 res.role_go = go; 1541 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1542 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1543 res.wps_method = peer->wps_method; 1544 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1545 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1546 res.persistent_group = 2; 1547 else 1548 res.persistent_group = 1; 1549 } 1550 1551 if (go) { 1552 /* Setup AP mode for WPS provisioning */ 1553 res.freq = p2p_channel_to_freq(p2p->cfg->country, 1554 p2p->op_reg_class, 1555 p2p->op_channel); 1556 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1557 res.ssid_len = p2p->ssid_len; 1558 p2p_random(res.passphrase, 8); 1559 } else { 1560 res.freq = peer->oper_freq; 1561 if (p2p->ssid_len) { 1562 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1563 res.ssid_len = p2p->ssid_len; 1564 } 1565 } 1566 1567 p2p_channels_intersect(&p2p->channels, &peer->channels, 1568 &intersection); 1569 freqs = 0; 1570 for (i = 0; i < intersection.reg_classes; i++) { 1571 struct p2p_reg_class *c = &intersection.reg_class[i]; 1572 if (freqs + 1 == P2P_MAX_CHANNELS) 1573 break; 1574 for (j = 0; j < c->channels; j++) { 1575 int freq; 1576 if (freqs + 1 == P2P_MAX_CHANNELS) 1577 break; 1578 freq = p2p_channel_to_freq(peer->country, c->reg_class, 1579 c->channel[j]); 1580 if (freq < 0) 1581 continue; 1582 res.freq_list[freqs++] = freq; 1583 } 1584 } 1585 1586 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1587 1588 p2p_clear_timeout(p2p); 1589 p2p->ssid_set = 0; 1590 peer->go_neg_req_sent = 0; 1591 peer->wps_method = WPS_NOT_READY; 1592 1593 p2p_set_state(p2p, P2P_PROVISIONING); 1594 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1595} 1596 1597 1598static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1599 const u8 *data, size_t len, int rx_freq) 1600{ 1601 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1602 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1603 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1604 1605 if (len < 1) 1606 return; 1607 1608 switch (data[0]) { 1609 case P2P_GO_NEG_REQ: 1610 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1611 break; 1612 case P2P_GO_NEG_RESP: 1613 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1614 break; 1615 case P2P_GO_NEG_CONF: 1616 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1617 break; 1618 case P2P_INVITATION_REQ: 1619 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1620 rx_freq); 1621 break; 1622 case P2P_INVITATION_RESP: 1623 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1624 break; 1625 case P2P_PROV_DISC_REQ: 1626 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1627 break; 1628 case P2P_PROV_DISC_RESP: 1629 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1630 break; 1631 case P2P_DEV_DISC_REQ: 1632 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1633 break; 1634 case P2P_DEV_DISC_RESP: 1635 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1636 break; 1637 default: 1638 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1639 "P2P: Unsupported P2P Public Action frame type %d", 1640 data[0]); 1641 break; 1642 } 1643} 1644 1645 1646static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1647 const u8 *sa, const u8 *bssid, const u8 *data, 1648 size_t len, int freq) 1649{ 1650 if (len < 1) 1651 return; 1652 1653 switch (data[0]) { 1654 case WLAN_PA_VENDOR_SPECIFIC: 1655 data++; 1656 len--; 1657 if (len < 3) 1658 return; 1659 if (WPA_GET_BE24(data) != OUI_WFA) 1660 return; 1661 1662 data += 3; 1663 len -= 3; 1664 if (len < 1) 1665 return; 1666 1667 if (*data != P2P_OUI_TYPE) 1668 return; 1669 1670 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1671 break; 1672 case WLAN_PA_GAS_INITIAL_REQ: 1673 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1674 break; 1675 case WLAN_PA_GAS_INITIAL_RESP: 1676 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1677 break; 1678 case WLAN_PA_GAS_COMEBACK_REQ: 1679 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1680 break; 1681 case WLAN_PA_GAS_COMEBACK_RESP: 1682 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1683 break; 1684 } 1685} 1686 1687 1688void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1689 const u8 *bssid, u8 category, 1690 const u8 *data, size_t len, int freq) 1691{ 1692 if (category == WLAN_ACTION_PUBLIC) { 1693 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1694 return; 1695 } 1696 1697 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1698 return; 1699 1700 if (len < 4) 1701 return; 1702 1703 if (WPA_GET_BE24(data) != OUI_WFA) 1704 return; 1705 data += 3; 1706 len -= 3; 1707 1708 if (*data != P2P_OUI_TYPE) 1709 return; 1710 data++; 1711 len--; 1712 1713 /* P2P action frame */ 1714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1715 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa)); 1716 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1717 1718 if (len < 1) 1719 return; 1720 switch (data[0]) { 1721 case P2P_NOA: 1722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1723 "P2P: Received P2P Action - Notice of Absence"); 1724 /* TODO */ 1725 break; 1726 case P2P_PRESENCE_REQ: 1727 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1728 break; 1729 case P2P_PRESENCE_RESP: 1730 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1731 break; 1732 case P2P_GO_DISC_REQ: 1733 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1734 break; 1735 default: 1736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1737 "P2P: Received P2P Action - unknown type %u", data[0]); 1738 break; 1739 } 1740} 1741 1742 1743static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1744{ 1745 struct p2p_data *p2p = eloop_ctx; 1746 if (p2p->go_neg_peer == NULL) 1747 return; 1748 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1749 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1750 p2p_connect_send(p2p, p2p->go_neg_peer); 1751} 1752 1753 1754static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1755{ 1756 struct p2p_data *p2p = eloop_ctx; 1757 if (p2p->invite_peer == NULL) 1758 return; 1759 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1760 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1761} 1762 1763 1764static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1765 const u8 *ie, size_t ie_len) 1766{ 1767 struct p2p_message msg; 1768 struct p2p_device *dev; 1769 1770 os_memset(&msg, 0, sizeof(msg)); 1771 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1772 { 1773 p2p_parse_free(&msg); 1774 return; /* not a P2P probe */ 1775 } 1776 1777 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1778 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1779 != 0) { 1780 /* The Probe Request is not part of P2P Device Discovery. It is 1781 * not known whether the source address of the frame is the P2P 1782 * Device Address or P2P Interface Address. Do not add a new 1783 * peer entry based on this frames. 1784 */ 1785 p2p_parse_free(&msg); 1786 return; 1787 } 1788 1789 dev = p2p_get_device(p2p, addr); 1790 if (dev) { 1791 if (dev->country[0] == 0 && msg.listen_channel) 1792 os_memcpy(dev->country, msg.listen_channel, 3); 1793 os_get_time(&dev->last_seen); 1794 p2p_parse_free(&msg); 1795 return; /* already known */ 1796 } 1797 1798 dev = p2p_create_device(p2p, addr); 1799 if (dev == NULL) { 1800 p2p_parse_free(&msg); 1801 return; 1802 } 1803 1804 os_get_time(&dev->last_seen); 1805 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1806 1807 if (msg.listen_channel) { 1808 os_memcpy(dev->country, msg.listen_channel, 3); 1809 dev->listen_freq = p2p_channel_to_freq(dev->country, 1810 msg.listen_channel[3], 1811 msg.listen_channel[4]); 1812 } 1813 1814 p2p_copy_wps_info(dev, 1, &msg); 1815 1816 if (msg.wfd_subelems) { 1817 wpabuf_free(dev->info.wfd_subelems); 1818 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1819 } 1820 1821 p2p_parse_free(&msg); 1822 1823 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1824 "P2P: Created device entry based on Probe Req: " MACSTR 1825 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1826 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1827 dev->info.group_capab, dev->info.device_name, 1828 dev->listen_freq); 1829} 1830 1831 1832struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1833 const u8 *addr, 1834 struct p2p_message *msg) 1835{ 1836 struct p2p_device *dev; 1837 1838 dev = p2p_get_device(p2p, addr); 1839 if (dev) { 1840 os_get_time(&dev->last_seen); 1841 return dev; /* already known */ 1842 } 1843 1844 dev = p2p_create_device(p2p, addr); 1845 if (dev == NULL) 1846 return NULL; 1847 1848 p2p_add_dev_info(p2p, addr, dev, msg); 1849 1850 return dev; 1851} 1852 1853 1854static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1855{ 1856 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1857 return 1; 1858 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1859 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1860 WPA_GET_BE16(&req_dev_type[6]) == 0) 1861 return 1; /* Category match with wildcard OUI/sub-category */ 1862 return 0; 1863} 1864 1865 1866int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1867 size_t num_req_dev_type) 1868{ 1869 size_t i; 1870 for (i = 0; i < num_req_dev_type; i++) { 1871 if (dev_type_match(dev_type, req_dev_type[i])) 1872 return 1; 1873 } 1874 return 0; 1875} 1876 1877 1878/** 1879 * p2p_match_dev_type - Match local device type with requested type 1880 * @p2p: P2P module context from p2p_init() 1881 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1882 * Returns: 1 on match, 0 on mismatch 1883 * 1884 * This function can be used to match the Requested Device Type attribute in 1885 * WPS IE with the local device types for deciding whether to reply to a Probe 1886 * Request frame. 1887 */ 1888int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1889{ 1890 struct wps_parse_attr attr; 1891 size_t i; 1892 1893 if (wps_parse_msg(wps, &attr)) 1894 return 1; /* assume no Requested Device Type attributes */ 1895 1896 if (attr.num_req_dev_type == 0) 1897 return 1; /* no Requested Device Type attributes -> match */ 1898 1899 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1900 attr.num_req_dev_type)) 1901 return 1; /* Own Primary Device Type matches */ 1902 1903 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1904 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1905 attr.req_dev_type, 1906 attr.num_req_dev_type)) 1907 return 1; /* Own Secondary Device Type matches */ 1908 1909 /* No matching device type found */ 1910 return 0; 1911} 1912 1913 1914struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1915{ 1916 struct wpabuf *buf; 1917 u8 *len; 1918 int pw_id = -1; 1919 size_t extra = 0; 1920 1921#ifdef CONFIG_WIFI_DISPLAY 1922 if (p2p->wfd_ie_probe_resp) 1923 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1924#endif /* CONFIG_WIFI_DISPLAY */ 1925 1926 buf = wpabuf_alloc(1000 + extra); 1927 if (buf == NULL) 1928 return NULL; 1929 1930 if (p2p->go_neg_peer) { 1931 /* Advertise immediate availability of WPS credential */ 1932 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1933 } 1934 1935 p2p_build_wps_ie(p2p, buf, pw_id, 1); 1936 1937#ifdef CONFIG_WIFI_DISPLAY 1938 if (p2p->wfd_ie_probe_resp) 1939 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1940#endif /* CONFIG_WIFI_DISPLAY */ 1941 1942 /* P2P IE */ 1943 len = p2p_buf_add_ie_hdr(buf); 1944 p2p_buf_add_capability(buf, p2p->dev_capab & 1945 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1946 if (p2p->ext_listen_interval) 1947 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1948 p2p->ext_listen_interval); 1949 p2p_buf_add_device_info(buf, p2p, NULL); 1950 p2p_buf_update_ie_hdr(buf, len); 1951 1952 return buf; 1953} 1954 1955 1956static int is_11b(u8 rate) 1957{ 1958 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16; 1959} 1960 1961 1962static int supp_rates_11b_only(struct ieee802_11_elems *elems) 1963{ 1964 int num_11b = 0, num_others = 0; 1965 int i; 1966 1967 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL) 1968 return 0; 1969 1970 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) { 1971 if (is_11b(elems->supp_rates[i])) 1972 num_11b++; 1973 else 1974 num_others++; 1975 } 1976 1977 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len; 1978 i++) { 1979 if (is_11b(elems->ext_supp_rates[i])) 1980 num_11b++; 1981 else 1982 num_others++; 1983 } 1984 1985 return num_11b > 0 && num_others == 0; 1986} 1987 1988 1989static enum p2p_probe_req_status 1990p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1991 const u8 *bssid, const u8 *ie, size_t ie_len) 1992{ 1993 struct ieee802_11_elems elems; 1994 struct wpabuf *buf; 1995 struct ieee80211_mgmt *resp; 1996 struct p2p_message msg; 1997 struct wpabuf *ies; 1998 1999 if (!p2p->in_listen || !p2p->drv_in_listen) { 2000 /* not in Listen state - ignore Probe Request */ 2001 return P2P_PREQ_NOT_LISTEN; 2002 } 2003 2004 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2005 ParseFailed) { 2006 /* Ignore invalid Probe Request frames */ 2007 return P2P_PREQ_MALFORMED; 2008 } 2009 2010 if (elems.p2p == NULL) { 2011 /* not a P2P probe - ignore it */ 2012 return P2P_PREQ_NOT_P2P; 2013 } 2014 2015 if (dst && !is_broadcast_ether_addr(dst) && 2016 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2017 /* Not sent to the broadcast address or our P2P Device Address 2018 */ 2019 return P2P_PREQ_NOT_PROCESSED; 2020 } 2021 2022 if (bssid && !is_broadcast_ether_addr(bssid)) { 2023 /* Not sent to the Wildcard BSSID */ 2024 return P2P_PREQ_NOT_PROCESSED; 2025 } 2026 2027 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2028 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2029 0) { 2030 /* not using P2P Wildcard SSID - ignore */ 2031 return P2P_PREQ_NOT_PROCESSED; 2032 } 2033 2034 if (supp_rates_11b_only(&elems)) { 2035 /* Indicates support for 11b rates only */ 2036 return P2P_PREQ_NOT_P2P; 2037 } 2038 2039 os_memset(&msg, 0, sizeof(msg)); 2040 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2041 /* Could not parse P2P attributes */ 2042 return P2P_PREQ_NOT_P2P; 2043 } 2044 2045 if (msg.device_id && 2046 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2047 /* Device ID did not match */ 2048 p2p_parse_free(&msg); 2049 return P2P_PREQ_NOT_PROCESSED; 2050 } 2051 2052 /* Check Requested Device Type match */ 2053 if (msg.wps_attributes && 2054 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2055 /* No match with Requested Device Type */ 2056 p2p_parse_free(&msg); 2057 return P2P_PREQ_NOT_PROCESSED; 2058 } 2059 p2p_parse_free(&msg); 2060 2061 if (!p2p->cfg->send_probe_resp) { 2062 /* Response generated elsewhere */ 2063 return P2P_PREQ_NOT_PROCESSED; 2064 } 2065 2066 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2067 "P2P: Reply to P2P Probe Request in Listen state"); 2068 2069 /* 2070 * We do not really have a specific BSS that this frame is advertising, 2071 * so build a frame that has some information in valid format. This is 2072 * really only used for discovery purposes, not to learn exact BSS 2073 * parameters. 2074 */ 2075 ies = p2p_build_probe_resp_ies(p2p); 2076 if (ies == NULL) 2077 return P2P_PREQ_NOT_PROCESSED; 2078 2079 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2080 if (buf == NULL) { 2081 wpabuf_free(ies); 2082 return P2P_PREQ_NOT_PROCESSED; 2083 } 2084 2085 resp = NULL; 2086 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2087 2088 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2089 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2090 os_memcpy(resp->da, addr, ETH_ALEN); 2091 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2092 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2093 resp->u.probe_resp.beacon_int = host_to_le16(100); 2094 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2095 resp->u.probe_resp.capab_info = 2096 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2097 WLAN_CAPABILITY_PRIVACY | 2098 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2099 2100 wpabuf_put_u8(buf, WLAN_EID_SSID); 2101 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2102 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2103 2104 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2105 wpabuf_put_u8(buf, 8); 2106 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2107 wpabuf_put_u8(buf, 90 / 5); 2108 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2109 wpabuf_put_u8(buf, 180 / 5); 2110 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2111 wpabuf_put_u8(buf, 360 / 5); 2112 wpabuf_put_u8(buf, 480 / 5); 2113 wpabuf_put_u8(buf, 540 / 5); 2114 2115 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2116 wpabuf_put_u8(buf, 1); 2117 wpabuf_put_u8(buf, p2p->cfg->channel); 2118 2119 wpabuf_put_buf(buf, ies); 2120 wpabuf_free(ies); 2121 2122 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2123 2124 wpabuf_free(buf); 2125 2126 return P2P_PREQ_NOT_PROCESSED; 2127} 2128 2129 2130enum p2p_probe_req_status 2131p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2132 const u8 *bssid, const u8 *ie, size_t ie_len) 2133{ 2134 enum p2p_probe_req_status res; 2135 2136 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2137 2138 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2139 2140 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2141 p2p->go_neg_peer && 2142 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2143 == 0) { 2144 /* Received a Probe Request from GO Negotiation peer */ 2145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2146 "P2P: Found GO Negotiation peer - try to start GO " 2147 "negotiation from timeout"); 2148 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2149 return P2P_PREQ_PROCESSED; 2150 } 2151 2152 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2153 p2p->invite_peer && 2154 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2155 == 0) { 2156 /* Received a Probe Request from Invite peer */ 2157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2158 "P2P: Found Invite peer - try to start Invite from " 2159 "timeout"); 2160 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2161 return P2P_PREQ_PROCESSED; 2162 } 2163 2164 return res; 2165} 2166 2167 2168static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2169 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2170{ 2171 struct wpabuf *tmp; 2172 u8 *lpos; 2173 size_t tmplen; 2174 int res; 2175 u8 group_capab; 2176 2177 if (p2p_ie == NULL) 2178 return 0; /* WLAN AP is not a P2P manager */ 2179 2180 /* 2181 * (Re)Association Request - P2P IE 2182 * P2P Capability attribute (shall be present) 2183 * P2P Interface attribute (present if concurrent device and 2184 * P2P Management is enabled) 2185 */ 2186 tmp = wpabuf_alloc(200); 2187 if (tmp == NULL) 2188 return -1; 2189 2190 lpos = p2p_buf_add_ie_hdr(tmp); 2191 group_capab = 0; 2192 if (p2p->num_groups > 0) { 2193 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2194 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2195 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2196 p2p->cross_connect) 2197 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2198 } 2199 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2200 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2201 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2202 p2p_buf_add_p2p_interface(tmp, p2p); 2203 p2p_buf_update_ie_hdr(tmp, lpos); 2204 2205 tmplen = wpabuf_len(tmp); 2206 if (tmplen > len) 2207 res = -1; 2208 else { 2209 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2210 res = tmplen; 2211 } 2212 wpabuf_free(tmp); 2213 2214 return res; 2215} 2216 2217 2218int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2219 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2220{ 2221 struct wpabuf *tmp; 2222 u8 *lpos; 2223 struct p2p_device *peer; 2224 size_t tmplen; 2225 int res; 2226 size_t extra = 0; 2227 2228 if (!p2p_group) 2229 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2230 2231#ifdef CONFIG_WIFI_DISPLAY 2232 if (p2p->wfd_ie_assoc_req) 2233 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2234#endif /* CONFIG_WIFI_DISPLAY */ 2235 2236 /* 2237 * (Re)Association Request - P2P IE 2238 * P2P Capability attribute (shall be present) 2239 * Extended Listen Timing (may be present) 2240 * P2P Device Info attribute (shall be present) 2241 */ 2242 tmp = wpabuf_alloc(200 + extra); 2243 if (tmp == NULL) 2244 return -1; 2245 2246#ifdef CONFIG_WIFI_DISPLAY 2247 if (p2p->wfd_ie_assoc_req) 2248 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2249#endif /* CONFIG_WIFI_DISPLAY */ 2250 2251 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2252 2253 lpos = p2p_buf_add_ie_hdr(tmp); 2254 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2255 if (p2p->ext_listen_interval) 2256 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2257 p2p->ext_listen_interval); 2258 p2p_buf_add_device_info(tmp, p2p, peer); 2259 p2p_buf_update_ie_hdr(tmp, lpos); 2260 2261 tmplen = wpabuf_len(tmp); 2262 if (tmplen > len) 2263 res = -1; 2264 else { 2265 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2266 res = tmplen; 2267 } 2268 wpabuf_free(tmp); 2269 2270 return res; 2271} 2272 2273 2274int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2275{ 2276 struct wpabuf *p2p_ie; 2277 int ret; 2278 2279 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2280 if (p2p_ie == NULL) 2281 return 0; 2282 2283 ret = p2p_attr_text(p2p_ie, buf, end); 2284 wpabuf_free(p2p_ie); 2285 return ret; 2286} 2287 2288 2289int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2290{ 2291 struct p2p_message msg; 2292 2293 os_memset(&msg, 0, sizeof(msg)); 2294 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2295 return -1; 2296 2297 if (msg.p2p_device_addr) { 2298 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2299 return 0; 2300 } else if (msg.device_id) { 2301 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2302 return 0; 2303 } 2304 return -1; 2305} 2306 2307 2308int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2309{ 2310 struct wpabuf *p2p_ie; 2311 int ret; 2312 2313 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2314 P2P_IE_VENDOR_TYPE); 2315 if (p2p_ie == NULL) 2316 return -1; 2317 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2318 wpabuf_free(p2p_ie); 2319 return ret; 2320} 2321 2322 2323static void p2p_clear_go_neg(struct p2p_data *p2p) 2324{ 2325 p2p->go_neg_peer = NULL; 2326 p2p_clear_timeout(p2p); 2327 p2p_set_state(p2p, P2P_IDLE); 2328} 2329 2330 2331void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2332{ 2333 if (p2p->go_neg_peer == NULL) { 2334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2335 "P2P: No pending Group Formation - " 2336 "ignore WPS registration success notification"); 2337 return; /* No pending Group Formation */ 2338 } 2339 2340 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2341 0) { 2342 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2343 "P2P: Ignore WPS registration success notification " 2344 "for " MACSTR " (GO Negotiation peer " MACSTR ")", 2345 MAC2STR(mac_addr), 2346 MAC2STR(p2p->go_neg_peer->intended_addr)); 2347 return; /* Ignore unexpected peer address */ 2348 } 2349 2350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2351 "P2P: Group Formation completed successfully with " MACSTR, 2352 MAC2STR(mac_addr)); 2353 2354 p2p_clear_go_neg(p2p); 2355} 2356 2357 2358void p2p_group_formation_failed(struct p2p_data *p2p) 2359{ 2360 if (p2p->go_neg_peer == NULL) { 2361 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2362 "P2P: No pending Group Formation - " 2363 "ignore group formation failure notification"); 2364 return; /* No pending Group Formation */ 2365 } 2366 2367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2368 "P2P: Group Formation failed with " MACSTR, 2369 MAC2STR(p2p->go_neg_peer->intended_addr)); 2370 2371 p2p_clear_go_neg(p2p); 2372} 2373 2374 2375struct p2p_data * p2p_init(const struct p2p_config *cfg) 2376{ 2377 struct p2p_data *p2p; 2378 2379 if (cfg->max_peers < 1) 2380 return NULL; 2381 2382 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2383 if (p2p == NULL) 2384 return NULL; 2385 p2p->cfg = (struct p2p_config *) (p2p + 1); 2386 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2387 if (cfg->dev_name) 2388 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2389 if (cfg->manufacturer) 2390 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2391 if (cfg->model_name) 2392 p2p->cfg->model_name = os_strdup(cfg->model_name); 2393 if (cfg->model_number) 2394 p2p->cfg->model_number = os_strdup(cfg->model_number); 2395 if (cfg->serial_number) 2396 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2397 if (cfg->pref_chan) { 2398 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2399 sizeof(struct p2p_channel)); 2400 if (p2p->cfg->pref_chan) { 2401 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2402 cfg->num_pref_chan * 2403 sizeof(struct p2p_channel)); 2404 } else 2405 p2p->cfg->num_pref_chan = 0; 2406 } 2407 2408#ifdef ANDROID_P2P 2409 /* 100ms listen time is too less to receive the response frames in some scenarios 2410 * increasing min listen time to 200ms. 2411 */ 2412 p2p->min_disc_int = 2; 2413 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2414 p2p->sd_dev_list = NULL; 2415#else 2416 p2p->min_disc_int = 1; 2417#endif 2418 p2p->max_disc_int = 3; 2419 p2p->max_disc_tu = -1; 2420 2421 os_get_random(&p2p->next_tie_breaker, 1); 2422 p2p->next_tie_breaker &= 0x01; 2423 if (cfg->sd_request) 2424 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2425 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2426 if (cfg->concurrent_operations) 2427 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2428 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2429 2430 dl_list_init(&p2p->devices); 2431 2432 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2433 p2p_expiration_timeout, p2p, NULL); 2434 2435 p2p->go_timeout = 100; 2436 p2p->client_timeout = 20; 2437 2438 return p2p; 2439} 2440 2441 2442void p2p_deinit(struct p2p_data *p2p) 2443{ 2444#ifdef CONFIG_WIFI_DISPLAY 2445 wpabuf_free(p2p->wfd_ie_beacon); 2446 wpabuf_free(p2p->wfd_ie_probe_req); 2447 wpabuf_free(p2p->wfd_ie_probe_resp); 2448 wpabuf_free(p2p->wfd_ie_assoc_req); 2449 wpabuf_free(p2p->wfd_ie_invitation); 2450 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2451 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2452 wpabuf_free(p2p->wfd_ie_go_neg); 2453 wpabuf_free(p2p->wfd_dev_info); 2454 wpabuf_free(p2p->wfd_assoc_bssid); 2455 wpabuf_free(p2p->wfd_coupled_sink_info); 2456#endif /* CONFIG_WIFI_DISPLAY */ 2457 2458 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2459 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2460 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2461 p2p_flush(p2p); 2462 p2p_free_req_dev_types(p2p); 2463 os_free(p2p->cfg->dev_name); 2464 os_free(p2p->cfg->manufacturer); 2465 os_free(p2p->cfg->model_name); 2466 os_free(p2p->cfg->model_number); 2467 os_free(p2p->cfg->serial_number); 2468 os_free(p2p->cfg->pref_chan); 2469 os_free(p2p->groups); 2470 wpabuf_free(p2p->sd_resp); 2471 os_free(p2p->after_scan_tx); 2472 p2p_remove_wps_vendor_extensions(p2p); 2473 os_free(p2p); 2474} 2475 2476 2477void p2p_flush(struct p2p_data *p2p) 2478{ 2479 struct p2p_device *dev, *prev; 2480 p2p_stop_find(p2p); 2481 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2482 list) { 2483 dl_list_del(&dev->list); 2484 p2p_device_free(p2p, dev); 2485 } 2486#ifdef ANDROID_P2P 2487 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2488 p2p->sd_dev_list = NULL; 2489#endif 2490 p2p_free_sd_queries(p2p); 2491 os_free(p2p->after_scan_tx); 2492 p2p->after_scan_tx = NULL; 2493} 2494 2495 2496int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2497{ 2498 struct p2p_device *dev; 2499 2500 dev = p2p_get_device(p2p, addr); 2501 if (dev == NULL) 2502 return -1; 2503 2504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR, 2505 MAC2STR(addr)); 2506 2507 if (p2p->go_neg_peer == dev) 2508 p2p->go_neg_peer = NULL; 2509 2510 dev->wps_method = WPS_NOT_READY; 2511 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2512 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2513 2514 /* Check if after_scan_tx is for this peer. If so free it */ 2515 if (p2p->after_scan_tx && 2516 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2517 os_free(p2p->after_scan_tx); 2518 p2p->after_scan_tx = NULL; 2519 } 2520 2521 return 0; 2522} 2523 2524 2525int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2526{ 2527 os_free(p2p->cfg->dev_name); 2528 if (dev_name) { 2529 p2p->cfg->dev_name = os_strdup(dev_name); 2530 if (p2p->cfg->dev_name == NULL) 2531 return -1; 2532 } else 2533 p2p->cfg->dev_name = NULL; 2534 return 0; 2535} 2536 2537 2538int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2539{ 2540 os_free(p2p->cfg->manufacturer); 2541 p2p->cfg->manufacturer = NULL; 2542 if (manufacturer) { 2543 p2p->cfg->manufacturer = os_strdup(manufacturer); 2544 if (p2p->cfg->manufacturer == NULL) 2545 return -1; 2546 } 2547 2548 return 0; 2549} 2550 2551 2552int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2553{ 2554 os_free(p2p->cfg->model_name); 2555 p2p->cfg->model_name = NULL; 2556 if (model_name) { 2557 p2p->cfg->model_name = os_strdup(model_name); 2558 if (p2p->cfg->model_name == NULL) 2559 return -1; 2560 } 2561 2562 return 0; 2563} 2564 2565 2566int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2567{ 2568 os_free(p2p->cfg->model_number); 2569 p2p->cfg->model_number = NULL; 2570 if (model_number) { 2571 p2p->cfg->model_number = os_strdup(model_number); 2572 if (p2p->cfg->model_number == NULL) 2573 return -1; 2574 } 2575 2576 return 0; 2577} 2578 2579 2580int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2581{ 2582 os_free(p2p->cfg->serial_number); 2583 p2p->cfg->serial_number = NULL; 2584 if (serial_number) { 2585 p2p->cfg->serial_number = os_strdup(serial_number); 2586 if (p2p->cfg->serial_number == NULL) 2587 return -1; 2588 } 2589 2590 return 0; 2591} 2592 2593 2594void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2595{ 2596 p2p->cfg->config_methods = config_methods; 2597} 2598 2599 2600void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2601{ 2602 os_memcpy(p2p->cfg->uuid, uuid, 16); 2603} 2604 2605 2606int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2607{ 2608 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2609 return 0; 2610} 2611 2612 2613int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2614 size_t num_dev_types) 2615{ 2616 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2617 num_dev_types = P2P_SEC_DEVICE_TYPES; 2618 p2p->cfg->num_sec_dev_types = num_dev_types; 2619 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2620 return 0; 2621} 2622 2623 2624void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2625{ 2626 int i; 2627 2628 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2629 wpabuf_free(p2p->wps_vendor_ext[i]); 2630 p2p->wps_vendor_ext[i] = NULL; 2631 } 2632} 2633 2634 2635int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2636 const struct wpabuf *vendor_ext) 2637{ 2638 int i; 2639 2640 if (vendor_ext == NULL) 2641 return -1; 2642 2643 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2644 if (p2p->wps_vendor_ext[i] == NULL) 2645 break; 2646 } 2647 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2648 return -1; 2649 2650 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2651 if (p2p->wps_vendor_ext[i] == NULL) 2652 return -1; 2653 2654 return 0; 2655} 2656 2657 2658int p2p_set_country(struct p2p_data *p2p, const char *country) 2659{ 2660 os_memcpy(p2p->cfg->country, country, 3); 2661 return 0; 2662} 2663 2664 2665void p2p_continue_find(struct p2p_data *p2p) 2666{ 2667 struct p2p_device *dev; 2668#ifdef ANDROID_P2P 2669 int skip=1; 2670#endif 2671 p2p_set_state(p2p, P2P_SEARCH); 2672 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2673#ifdef ANDROID_P2P 2674 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2675 * There may be a scenario, where a particular peer device have 2676 * not registered any query response. When we send a SD request to such device, 2677 * no response will be received. And if we continue to get probe responses from that device, 2678 * and if that device happens to be on top in our device list, 2679 * we will always continue to send SD requests always to that peer only. 2680 * We will not be able to send SD requests to other devices in that case. 2681 * This implementation keeps track of last serviced peer device. 2682 * And then takes the next one from the device list, in the next iteration. 2683 */ 2684 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2685 if(skip) { 2686 if ((&dev->list == p2p->sd_dev_list) ) { 2687 skip = 0; 2688 if (dev->list.next == &p2p->devices) 2689 p2p->sd_dev_list = NULL; 2690 } 2691 continue; 2692 } 2693 } 2694 p2p->sd_dev_list = &dev->list; 2695 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2696 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2697 MAC2STR(dev->info.p2p_device_addr)); 2698#endif 2699 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2700 if (p2p_start_sd(p2p, dev) == 0) 2701 return; 2702 else 2703 break; 2704 } else if (dev->req_config_methods && 2705 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2706 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2707 "pending Provision Discovery Request to " 2708 MACSTR " (config methods 0x%x)", 2709 MAC2STR(dev->info.p2p_device_addr), 2710 dev->req_config_methods); 2711 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2712 return; 2713 } 2714 } 2715 2716 p2p_listen_in_find(p2p, 1); 2717} 2718 2719 2720static void p2p_sd_cb(struct p2p_data *p2p, int success) 2721{ 2722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2723 "P2P: Service Discovery Query TX callback: success=%d", 2724 success); 2725 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2726 2727 if (!success) { 2728 if (p2p->sd_peer) { 2729 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2730 p2p->sd_peer = NULL; 2731 } 2732 p2p_continue_find(p2p); 2733 return; 2734 } 2735 2736 if (p2p->sd_peer == NULL) { 2737 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2738 "P2P: No SD peer entry known"); 2739 p2p_continue_find(p2p); 2740 return; 2741 } 2742 2743 /* Wait for response from the peer */ 2744 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2745 p2p_set_timeout(p2p, 0, 200000); 2746} 2747 2748 2749/** 2750 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2751 * @p2p: P2P module context from p2p_init() 2752 */ 2753static void p2p_retry_pd(struct p2p_data *p2p) 2754{ 2755 struct p2p_device *dev; 2756 2757 if (p2p->state != P2P_IDLE) 2758 return; 2759 2760 /* 2761 * Retry the prov disc req attempt only for the peer that the user had 2762 * requested. 2763 */ 2764 2765 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2766 if (os_memcmp(p2p->pending_pd_devaddr, 2767 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2768 continue; 2769 if (!dev->req_config_methods) 2770 continue; 2771 2772 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2773 "pending Provision Discovery Request to " 2774 MACSTR " (config methods 0x%x)", 2775 MAC2STR(dev->info.p2p_device_addr), 2776 dev->req_config_methods); 2777 p2p_send_prov_disc_req(p2p, dev, 2778 dev->flags & P2P_DEV_PD_FOR_JOIN, 0); 2779 return; 2780 } 2781} 2782 2783 2784static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2785{ 2786 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2787 "P2P: Provision Discovery Request TX callback: success=%d", 2788 success); 2789 2790 /* 2791 * Postpone resetting the pending action state till after we actually 2792 * time out. This allows us to take some action like notifying any 2793 * interested parties about no response to the request. 2794 * 2795 * When the timer (below) goes off we check in IDLE, SEARCH, or 2796 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2797 * requests in, if this was still pending and then raise notification. 2798 */ 2799 2800 if (!success) { 2801 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2802 2803 if (p2p->user_initiated_pd && 2804 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2805 { 2806 /* Retry request from timeout to avoid busy loops */ 2807 p2p->pending_action_state = P2P_PENDING_PD; 2808 p2p_set_timeout(p2p, 0, 50000); 2809 } else if (p2p->state != P2P_IDLE) 2810 p2p_continue_find(p2p); 2811 else if (p2p->user_initiated_pd) { 2812 p2p->pending_action_state = P2P_PENDING_PD; 2813#ifdef ANDROID_P2P 2814 p2p_set_timeout(p2p, 0, 350000); 2815#else 2816 p2p_set_timeout(p2p, 0, 300000); 2817#endif 2818 } 2819 return; 2820 } 2821 2822 /* 2823 * This postponing, of resetting pending_action_state, needs to be 2824 * done only for user initiated PD requests and not internal ones. 2825 */ 2826 if (p2p->user_initiated_pd) 2827 p2p->pending_action_state = P2P_PENDING_PD; 2828 else 2829 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2830 2831 /* Wait for response from the peer */ 2832 if (p2p->state == P2P_SEARCH) 2833 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2834#ifdef ANDROID_P2P 2835 p2p_set_timeout(p2p, 0, 350000); 2836#else 2837 p2p_set_timeout(p2p, 0, 200000); 2838#endif 2839} 2840 2841 2842int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2843 int level, const u8 *ies, size_t ies_len) 2844{ 2845 p2p_add_device(p2p, bssid, freq, level, ies, ies_len, 1); 2846 2847 return 0; 2848} 2849 2850 2851void p2p_scan_res_handled(struct p2p_data *p2p) 2852{ 2853 if (!p2p->p2p_scan_running) { 2854 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not " 2855 "running, but scan results received"); 2856 } 2857 p2p->p2p_scan_running = 0; 2858 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2859 2860 if (p2p_run_after_scan(p2p)) 2861 return; 2862 if (p2p->state == P2P_SEARCH) 2863 p2p_continue_find(p2p); 2864} 2865 2866 2867void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2868{ 2869 u8 *len; 2870 2871#ifdef CONFIG_WIFI_DISPLAY 2872 if (p2p->wfd_ie_probe_req) 2873 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2874#endif /* CONFIG_WIFI_DISPLAY */ 2875 2876 len = p2p_buf_add_ie_hdr(ies); 2877 p2p_buf_add_capability(ies, p2p->dev_capab & 2878 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2879 if (dev_id) 2880 p2p_buf_add_device_id(ies, dev_id); 2881 if (p2p->cfg->reg_class && p2p->cfg->channel) 2882 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2883 p2p->cfg->reg_class, 2884 p2p->cfg->channel); 2885 if (p2p->ext_listen_interval) 2886 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2887 p2p->ext_listen_interval); 2888 /* TODO: p2p_buf_add_operating_channel() if GO */ 2889 p2p_buf_update_ie_hdr(ies, len); 2890} 2891 2892 2893size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2894{ 2895 size_t len = 100; 2896 2897#ifdef CONFIG_WIFI_DISPLAY 2898 if (p2p && p2p->wfd_ie_probe_req) 2899 len += wpabuf_len(p2p->wfd_ie_probe_req); 2900#endif /* CONFIG_WIFI_DISPLAY */ 2901 2902 return len; 2903} 2904 2905 2906int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2907{ 2908 return p2p_attr_text(p2p_ie, buf, end); 2909} 2910 2911 2912static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2913{ 2914 struct p2p_device *dev = p2p->go_neg_peer; 2915 2916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2917 "P2P: GO Negotiation Request TX callback: success=%d", 2918 success); 2919 2920 if (dev == NULL) { 2921 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2922 "P2P: No pending GO Negotiation"); 2923 return; 2924 } 2925 2926 if (success) { 2927 if (dev->flags & P2P_DEV_USER_REJECTED) { 2928 p2p_set_state(p2p, P2P_IDLE); 2929 return; 2930 } 2931 } else if (dev->go_neg_req_sent) { 2932 /* Cancel the increment from p2p_connect_send() on failure */ 2933 dev->go_neg_req_sent--; 2934 } 2935 2936 if (!success && 2937 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2938 !is_zero_ether_addr(dev->member_in_go_dev)) { 2939 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2940 "P2P: Peer " MACSTR " did not acknowledge request - " 2941 "try to use device discoverability through its GO", 2942 MAC2STR(dev->info.p2p_device_addr)); 2943 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2944 p2p_send_dev_disc_req(p2p, dev); 2945 return; 2946 } 2947 2948 /* 2949 * Use P2P find, if needed, to find the other device from its listen 2950 * channel. 2951 */ 2952 p2p_set_state(p2p, P2P_CONNECT); 2953#ifdef ANDROID_P2P 2954 p2p_set_timeout(p2p, 0, 350000); 2955#else 2956 p2p_set_timeout(p2p, 0, success ? 200000 : 100000); 2957#endif 2958} 2959 2960 2961static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 2962{ 2963 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2964 "P2P: GO Negotiation Response TX callback: success=%d", 2965 success); 2966 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 2967 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2968 "P2P: Ignore TX callback event - GO Negotiation is " 2969 "not running anymore"); 2970 return; 2971 } 2972 p2p_set_state(p2p, P2P_CONNECT); 2973#ifdef ANDROID_P2P 2974 p2p_set_timeout(p2p, 0, 350000); 2975#else 2976 p2p_set_timeout(p2p, 0, 250000); 2977#endif 2978} 2979 2980 2981static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success) 2982{ 2983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2984 "P2P: GO Negotiation Response (failure) TX callback: " 2985 "success=%d", success); 2986 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 2987 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 2988 p2p->go_neg_peer->status); 2989 } 2990} 2991 2992 2993static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 2994 enum p2p_send_action_result result) 2995{ 2996 struct p2p_device *dev; 2997 2998 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2999 "P2P: GO Negotiation Confirm TX callback: result=%d", 3000 result); 3001 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3002 if (result == P2P_SEND_ACTION_FAILED) { 3003 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3004 return; 3005 } 3006 if (result == P2P_SEND_ACTION_NO_ACK) { 3007 /* 3008 * It looks like the TX status for GO Negotiation Confirm is 3009 * often showing failure even when the peer has actually 3010 * received the frame. Since the peer may change channels 3011 * immediately after having received the frame, we may not see 3012 * an Ack for retries, so just dropping a single frame may 3013 * trigger this. To allow the group formation to succeed if the 3014 * peer did indeed receive the frame, continue regardless of 3015 * the TX status. 3016 */ 3017 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3018 "P2P: Assume GO Negotiation Confirm TX was actually " 3019 "received by the peer even though Ack was not " 3020 "reported"); 3021 } 3022 3023 dev = p2p->go_neg_peer; 3024 if (dev == NULL) 3025 return; 3026 3027 p2p_go_complete(p2p, dev); 3028} 3029 3030 3031void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3032 const u8 *src, const u8 *bssid, 3033 enum p2p_send_action_result result) 3034{ 3035 enum p2p_pending_action_state state; 3036 int success; 3037 3038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3039 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR 3040 " src=" MACSTR " bssid=" MACSTR " result=%d", 3041 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3042 MAC2STR(bssid), result); 3043 success = result == P2P_SEND_ACTION_SUCCESS; 3044 state = p2p->pending_action_state; 3045 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3046 switch (state) { 3047 case P2P_NO_PENDING_ACTION: 3048 break; 3049 case P2P_PENDING_GO_NEG_REQUEST: 3050 p2p_go_neg_req_cb(p2p, success); 3051 break; 3052 case P2P_PENDING_GO_NEG_RESPONSE: 3053 p2p_go_neg_resp_cb(p2p, success); 3054 break; 3055 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3056 p2p_go_neg_resp_failure_cb(p2p, success); 3057 break; 3058 case P2P_PENDING_GO_NEG_CONFIRM: 3059 p2p_go_neg_conf_cb(p2p, result); 3060 break; 3061 case P2P_PENDING_SD: 3062 p2p_sd_cb(p2p, success); 3063 break; 3064 case P2P_PENDING_PD: 3065 p2p_prov_disc_cb(p2p, success); 3066 break; 3067 case P2P_PENDING_INVITATION_REQUEST: 3068 p2p_invitation_req_cb(p2p, success); 3069 break; 3070 case P2P_PENDING_INVITATION_RESPONSE: 3071 p2p_invitation_resp_cb(p2p, success); 3072 break; 3073 case P2P_PENDING_DEV_DISC_REQUEST: 3074 p2p_dev_disc_req_cb(p2p, success); 3075 break; 3076 case P2P_PENDING_DEV_DISC_RESPONSE: 3077 p2p_dev_disc_resp_cb(p2p, success); 3078 break; 3079 case P2P_PENDING_GO_DISC_REQ: 3080 p2p_go_disc_req_cb(p2p, success); 3081 break; 3082 } 3083} 3084 3085 3086void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3087 unsigned int duration) 3088{ 3089 if (freq == p2p->pending_client_disc_freq) { 3090 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3091 "P2P: Client discoverability remain-awake completed"); 3092 p2p->pending_client_disc_freq = 0; 3093 return; 3094 } 3095 3096 if (freq != p2p->pending_listen_freq) { 3097 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3098 "P2P: Unexpected listen callback for freq=%u " 3099 "duration=%u (pending_listen_freq=%u)", 3100 freq, duration, p2p->pending_listen_freq); 3101 return; 3102 } 3103 3104 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3105 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on " 3106 "callback", 3107 p2p->pending_listen_sec, p2p->pending_listen_usec, 3108 p2p->pending_listen_freq); 3109 p2p->in_listen = 1; 3110 p2p->drv_in_listen = freq; 3111 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3112 /* 3113 * Add 20 msec extra wait to avoid race condition with driver 3114 * remain-on-channel end event, i.e., give driver more time to 3115 * complete the operation before our timeout expires. 3116 */ 3117 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3118 p2p->pending_listen_usec + 20000); 3119 } 3120 3121 p2p->pending_listen_freq = 0; 3122} 3123 3124 3125int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3126{ 3127 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen " 3128 "state (freq=%u)", freq); 3129 p2p->drv_in_listen = 0; 3130 if (p2p->in_listen) 3131 return 0; /* Internal timeout will trigger the next step */ 3132 3133 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3134 if (p2p->go_neg_peer->connect_reqs >= 120) { 3135 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3136 "P2P: Timeout on sending GO Negotiation " 3137 "Request without getting response"); 3138 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3139 return 0; 3140 } 3141 3142 p2p_set_state(p2p, P2P_CONNECT); 3143 p2p_connect_send(p2p, p2p->go_neg_peer); 3144 return 1; 3145 } else if (p2p->state == P2P_SEARCH) { 3146 if (p2p->p2p_scan_running) { 3147 /* 3148 * Search is already in progress. This can happen if 3149 * an Action frame RX is reported immediately after 3150 * the end of a remain-on-channel operation and the 3151 * response frame to that is sent using an offchannel 3152 * operation while in p2p_find. Avoid an attempt to 3153 * restart a scan here. 3154 */ 3155 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan " 3156 "already in progress - do not try to start a " 3157 "new one"); 3158 return 1; 3159 } 3160 if (p2p->pending_listen_freq) { 3161 /* 3162 * Better wait a bit if the driver is unable to start 3163 * offchannel operation for some reason. p2p_search() 3164 * will be started from internal timeout. 3165 */ 3166 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen " 3167 "operation did not seem to start - delay " 3168 "search phase to avoid busy loop"); 3169 p2p_set_timeout(p2p, 0, 100000); 3170 return 1; 3171 } 3172 if (p2p->search_delay) { 3173 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3174 "search operation by %u ms", 3175 p2p->search_delay); 3176 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3177 (p2p->search_delay % 1000) * 1000); 3178 return 1; 3179 } 3180 p2p_search(p2p); 3181 return 1; 3182 } 3183 3184 return 0; 3185} 3186 3187 3188static void p2p_timeout_connect(struct p2p_data *p2p) 3189{ 3190 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3191 if (p2p->go_neg_peer && 3192 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3193 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO " 3194 "Negotiation Confirm timed out - assume GO " 3195 "Negotiation failed"); 3196 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3197 return; 3198 } 3199 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3200 p2p_listen_in_find(p2p, 0); 3201} 3202 3203 3204static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3205{ 3206 if (p2p->go_neg_peer) { 3207 if (p2p->drv_in_listen) { 3208 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is " 3209 "still in Listen state; wait for it to " 3210 "complete"); 3211 return; 3212 } 3213 3214 if (p2p->go_neg_peer->connect_reqs >= 120) { 3215 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3216 "P2P: Timeout on sending GO Negotiation " 3217 "Request without getting response"); 3218 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3219 return; 3220 } 3221 3222 p2p_set_state(p2p, P2P_CONNECT); 3223 p2p_connect_send(p2p, p2p->go_neg_peer); 3224 } else 3225 p2p_set_state(p2p, P2P_IDLE); 3226} 3227 3228 3229static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3230{ 3231 /* 3232 * TODO: could remain constantly in Listen state for some time if there 3233 * are no other concurrent uses for the radio. For now, go to listen 3234 * state once per second to give other uses a chance to use the radio. 3235 */ 3236 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3237 p2p_set_timeout(p2p, 0, 500000); 3238} 3239 3240 3241static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3242{ 3243 struct p2p_device *dev = p2p->go_neg_peer; 3244 3245 if (dev == NULL) { 3246 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3247 "P2P: Unknown GO Neg peer - stop GO Neg wait"); 3248 return; 3249 } 3250 3251 dev->wait_count++; 3252 if (dev->wait_count >= 120) { 3253 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3254 "P2P: Timeout on waiting peer to become ready for GO " 3255 "Negotiation"); 3256 p2p_go_neg_failed(p2p, dev, -1); 3257 return; 3258 } 3259 3260 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3261 "P2P: Go to Listen state while waiting for the peer to become " 3262 "ready for GO Negotiation"); 3263 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3264 p2p_listen_in_find(p2p, 0); 3265} 3266 3267 3268static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3269{ 3270 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3271 "P2P: Service Discovery Query timeout"); 3272 if (p2p->sd_peer) { 3273 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3274 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3275 p2p->sd_peer = NULL; 3276 } 3277 p2p_continue_find(p2p); 3278} 3279 3280 3281static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3282{ 3283 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3284 "P2P: Provision Discovery Request timeout"); 3285 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3286 p2p_continue_find(p2p); 3287} 3288 3289 3290static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3291{ 3292 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3293 3294 /* 3295 * For user initiated PD requests that we have not gotten any responses 3296 * for while in IDLE state, we retry them a couple of times before 3297 * giving up. 3298 */ 3299 if (!p2p->user_initiated_pd) 3300 return; 3301 3302 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3303 "P2P: User initiated Provision Discovery Request timeout"); 3304 3305 if (p2p->pd_retries) { 3306 p2p->pd_retries--; 3307 p2p_retry_pd(p2p); 3308 } else { 3309 struct p2p_device *dev; 3310 int for_join = 0; 3311 3312 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3313 if (os_memcmp(p2p->pending_pd_devaddr, 3314 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3315 continue; 3316 if (dev->req_config_methods && 3317 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3318 for_join = 1; 3319 } 3320 3321 if (p2p->cfg->prov_disc_fail) 3322 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3323 p2p->pending_pd_devaddr, 3324 for_join ? 3325 P2P_PROV_DISC_TIMEOUT_JOIN : 3326 P2P_PROV_DISC_TIMEOUT); 3327 p2p_reset_pending_pd(p2p); 3328 } 3329} 3330 3331 3332static void p2p_timeout_invite(struct p2p_data *p2p) 3333{ 3334 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3335 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3336 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3337 /* 3338 * Better remain on operating channel instead of listen channel 3339 * when running a group. 3340 */ 3341 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in " 3342 "active GO role - wait on operating channel"); 3343 p2p_set_timeout(p2p, 0, 100000); 3344 return; 3345 } 3346 p2p_listen_in_find(p2p, 0); 3347} 3348 3349 3350static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3351{ 3352 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3353 p2p_set_state(p2p, P2P_INVITE); 3354 p2p_invite_send(p2p, p2p->invite_peer, 3355 p2p->invite_go_dev_addr); 3356 } else { 3357 if (p2p->invite_peer) { 3358 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3359 "P2P: Invitation Request retry limit reached"); 3360 if (p2p->cfg->invitation_result) 3361 p2p->cfg->invitation_result( 3362 p2p->cfg->cb_ctx, -1, NULL); 3363 } 3364 p2p_set_state(p2p, P2P_IDLE); 3365 } 3366} 3367 3368 3369static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3370{ 3371 struct p2p_data *p2p = eloop_ctx; 3372 3373 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)", 3374 p2p_state_txt(p2p->state)); 3375 3376 p2p->in_listen = 0; 3377 3378 switch (p2p->state) { 3379 case P2P_IDLE: 3380 /* Check if we timed out waiting for PD req */ 3381 if (p2p->pending_action_state == P2P_PENDING_PD) 3382 p2p_timeout_prov_disc_req(p2p); 3383 break; 3384 case P2P_SEARCH: 3385 /* Check if we timed out waiting for PD req */ 3386 if (p2p->pending_action_state == P2P_PENDING_PD) 3387 p2p_timeout_prov_disc_req(p2p); 3388 if (p2p->search_delay && !p2p->in_search_delay) { 3389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3390 "search operation by %u ms", 3391 p2p->search_delay); 3392 p2p->in_search_delay = 1; 3393 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3394 (p2p->search_delay % 1000) * 1000); 3395 break; 3396 } 3397 p2p->in_search_delay = 0; 3398 p2p_search(p2p); 3399 break; 3400 case P2P_CONNECT: 3401 p2p_timeout_connect(p2p); 3402 break; 3403 case P2P_CONNECT_LISTEN: 3404 p2p_timeout_connect_listen(p2p); 3405 break; 3406 case P2P_GO_NEG: 3407 break; 3408 case P2P_LISTEN_ONLY: 3409 /* Check if we timed out waiting for PD req */ 3410 if (p2p->pending_action_state == P2P_PENDING_PD) 3411 p2p_timeout_prov_disc_req(p2p); 3412 3413 if (p2p->ext_listen_only) { 3414 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3415 "P2P: Extended Listen Timing - Listen State " 3416 "completed"); 3417 p2p->ext_listen_only = 0; 3418 p2p_set_state(p2p, P2P_IDLE); 3419 } 3420 break; 3421 case P2P_WAIT_PEER_CONNECT: 3422 p2p_timeout_wait_peer_connect(p2p); 3423 break; 3424 case P2P_WAIT_PEER_IDLE: 3425 p2p_timeout_wait_peer_idle(p2p); 3426 break; 3427 case P2P_SD_DURING_FIND: 3428 p2p_timeout_sd_during_find(p2p); 3429 break; 3430 case P2P_PROVISIONING: 3431 break; 3432 case P2P_PD_DURING_FIND: 3433 p2p_timeout_prov_disc_during_find(p2p); 3434 break; 3435 case P2P_INVITE: 3436 p2p_timeout_invite(p2p); 3437 break; 3438 case P2P_INVITE_LISTEN: 3439 p2p_timeout_invite_listen(p2p); 3440 break; 3441 case P2P_SEARCH_WHEN_READY: 3442 break; 3443 case P2P_CONTINUE_SEARCH_WHEN_READY: 3444 break; 3445 } 3446} 3447 3448 3449int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3450{ 3451 struct p2p_device *dev; 3452 3453 dev = p2p_get_device(p2p, peer_addr); 3454 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject " 3455 "connection attempts by peer " MACSTR, MAC2STR(peer_addr)); 3456 if (dev == NULL) { 3457 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR 3458 " unknown", MAC2STR(peer_addr)); 3459 return -1; 3460 } 3461 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3462 dev->flags |= P2P_DEV_USER_REJECTED; 3463 return 0; 3464} 3465 3466 3467const char * p2p_wps_method_text(enum p2p_wps_method method) 3468{ 3469 switch (method) { 3470 case WPS_NOT_READY: 3471 return "not-ready"; 3472 case WPS_PIN_DISPLAY: 3473 return "Display"; 3474 case WPS_PIN_KEYPAD: 3475 return "Keypad"; 3476 case WPS_PBC: 3477 return "PBC"; 3478 } 3479 3480 return "??"; 3481} 3482 3483 3484static const char * p2p_go_state_text(enum p2p_go_state go_state) 3485{ 3486 switch (go_state) { 3487 case UNKNOWN_GO: 3488 return "unknown"; 3489 case LOCAL_GO: 3490 return "local"; 3491 case REMOTE_GO: 3492 return "remote"; 3493 } 3494 3495 return "??"; 3496} 3497 3498 3499const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3500 const u8 *addr, int next) 3501{ 3502 struct p2p_device *dev; 3503 3504 if (addr) 3505 dev = p2p_get_device(p2p, addr); 3506 else 3507 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3508 3509 if (dev && next) { 3510 dev = dl_list_first(&dev->list, struct p2p_device, list); 3511 if (&dev->list == &p2p->devices) 3512 dev = NULL; 3513 } 3514 3515 if (dev == NULL) 3516 return NULL; 3517 3518 return &dev->info; 3519} 3520 3521 3522int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3523 char *buf, size_t buflen) 3524{ 3525 struct p2p_device *dev; 3526 int res; 3527 char *pos, *end; 3528 struct os_time now; 3529 3530 if (info == NULL) 3531 return -1; 3532 3533 dev = (struct p2p_device *) (((u8 *) info) - 3534 offsetof(struct p2p_device, info)); 3535 3536 pos = buf; 3537 end = buf + buflen; 3538 3539 os_get_time(&now); 3540 res = os_snprintf(pos, end - pos, 3541 "age=%d\n" 3542 "listen_freq=%d\n" 3543 "wps_method=%s\n" 3544 "interface_addr=" MACSTR "\n" 3545 "member_in_go_dev=" MACSTR "\n" 3546 "member_in_go_iface=" MACSTR "\n" 3547 "go_neg_req_sent=%d\n" 3548 "go_state=%s\n" 3549 "dialog_token=%u\n" 3550 "intended_addr=" MACSTR "\n" 3551 "country=%c%c\n" 3552 "oper_freq=%d\n" 3553 "req_config_methods=0x%x\n" 3554 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3555 "status=%d\n" 3556 "wait_count=%u\n" 3557 "invitation_reqs=%u\n", 3558 (int) (now.sec - dev->last_seen.sec), 3559 dev->listen_freq, 3560 p2p_wps_method_text(dev->wps_method), 3561 MAC2STR(dev->interface_addr), 3562 MAC2STR(dev->member_in_go_dev), 3563 MAC2STR(dev->member_in_go_iface), 3564 dev->go_neg_req_sent, 3565 p2p_go_state_text(dev->go_state), 3566 dev->dialog_token, 3567 MAC2STR(dev->intended_addr), 3568 dev->country[0] ? dev->country[0] : '_', 3569 dev->country[1] ? dev->country[1] : '_', 3570 dev->oper_freq, 3571 dev->req_config_methods, 3572 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3573 "[PROBE_REQ_ONLY]" : "", 3574 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3575 dev->flags & P2P_DEV_NOT_YET_READY ? 3576 "[NOT_YET_READY]" : "", 3577 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3578 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3579 "", 3580 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3581 "[PD_PEER_DISPLAY]" : "", 3582 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3583 "[PD_PEER_KEYPAD]" : "", 3584 dev->flags & P2P_DEV_USER_REJECTED ? 3585 "[USER_REJECTED]" : "", 3586 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3587 "[PEER_WAITING_RESPONSE]" : "", 3588 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3589 "[PREFER_PERSISTENT_GROUP]" : "", 3590 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3591 "[WAIT_GO_NEG_RESPONSE]" : "", 3592 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3593 "[WAIT_GO_NEG_CONFIRM]" : "", 3594 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3595 "[GROUP_CLIENT_ONLY]" : "", 3596 dev->flags & P2P_DEV_FORCE_FREQ ? 3597 "[FORCE_FREQ]" : "", 3598 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3599 "[PD_FOR_JOIN]" : "", 3600 dev->status, 3601 dev->wait_count, 3602 dev->invitation_reqs); 3603 if (res < 0 || res >= end - pos) 3604 return pos - buf; 3605 pos += res; 3606 3607 if (dev->ext_listen_period) { 3608 res = os_snprintf(pos, end - pos, 3609 "ext_listen_period=%u\n" 3610 "ext_listen_interval=%u\n", 3611 dev->ext_listen_period, 3612 dev->ext_listen_interval); 3613 if (res < 0 || res >= end - pos) 3614 return pos - buf; 3615 pos += res; 3616 } 3617 3618 if (dev->oper_ssid_len) { 3619 res = os_snprintf(pos, end - pos, 3620 "oper_ssid=%s\n", 3621 wpa_ssid_txt(dev->oper_ssid, 3622 dev->oper_ssid_len)); 3623 if (res < 0 || res >= end - pos) 3624 return pos - buf; 3625 pos += res; 3626 } 3627 3628#ifdef CONFIG_WIFI_DISPLAY 3629 if (dev->info.wfd_subelems) { 3630 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3631 if (res < 0 || res >= end - pos) 3632 return pos - buf; 3633 pos += res; 3634 3635 pos += wpa_snprintf_hex(pos, end - pos, 3636 wpabuf_head(dev->info.wfd_subelems), 3637 wpabuf_len(dev->info.wfd_subelems)); 3638 3639 res = os_snprintf(pos, end - pos, "\n"); 3640 if (res < 0 || res >= end - pos) 3641 return pos - buf; 3642 pos += res; 3643 } 3644#endif /* CONFIG_WIFI_DISPLAY */ 3645 3646 return pos - buf; 3647} 3648 3649 3650int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3651{ 3652 return p2p_get_device(p2p, addr) != NULL; 3653} 3654 3655 3656void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3657{ 3658 if (enabled) { 3659 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3660 "discoverability enabled"); 3661 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3662 } else { 3663 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3664 "discoverability disabled"); 3665 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3666 } 3667} 3668 3669 3670static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3671 u32 duration2, u32 interval2) 3672{ 3673 struct wpabuf *req; 3674 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3675 u8 *len; 3676 3677 req = wpabuf_alloc(100); 3678 if (req == NULL) 3679 return NULL; 3680 3681 if (duration1 || interval1) { 3682 os_memset(&desc1, 0, sizeof(desc1)); 3683 desc1.count_type = 1; 3684 desc1.duration = duration1; 3685 desc1.interval = interval1; 3686 ptr1 = &desc1; 3687 3688 if (duration2 || interval2) { 3689 os_memset(&desc2, 0, sizeof(desc2)); 3690 desc2.count_type = 2; 3691 desc2.duration = duration2; 3692 desc2.interval = interval2; 3693 ptr2 = &desc2; 3694 } 3695 } 3696 3697 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3698 len = p2p_buf_add_ie_hdr(req); 3699 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3700 p2p_buf_update_ie_hdr(req, len); 3701 3702 return req; 3703} 3704 3705 3706int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3707 const u8 *own_interface_addr, unsigned int freq, 3708 u32 duration1, u32 interval1, u32 duration2, 3709 u32 interval2) 3710{ 3711 struct wpabuf *req; 3712 3713 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to " 3714 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u " 3715 "int1=%u dur2=%u int2=%u", 3716 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3717 freq, duration1, interval1, duration2, interval2); 3718 3719 req = p2p_build_presence_req(duration1, interval1, duration2, 3720 interval2); 3721 if (req == NULL) 3722 return -1; 3723 3724 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3725 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3726 go_interface_addr, 3727 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3728 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3729 "P2P: Failed to send Action frame"); 3730 } 3731 wpabuf_free(req); 3732 3733 return 0; 3734} 3735 3736 3737static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3738 size_t noa_len, u8 dialog_token) 3739{ 3740 struct wpabuf *resp; 3741 u8 *len; 3742 3743 resp = wpabuf_alloc(100 + noa_len); 3744 if (resp == NULL) 3745 return NULL; 3746 3747 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3748 len = p2p_buf_add_ie_hdr(resp); 3749 p2p_buf_add_status(resp, status); 3750 if (noa) { 3751 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3752 wpabuf_put_le16(resp, noa_len); 3753 wpabuf_put_data(resp, noa, noa_len); 3754 } else 3755 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3756 p2p_buf_update_ie_hdr(resp, len); 3757 3758 return resp; 3759} 3760 3761 3762static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3763 const u8 *sa, const u8 *data, size_t len, 3764 int rx_freq) 3765{ 3766 struct p2p_message msg; 3767 u8 status; 3768 struct wpabuf *resp; 3769 size_t g; 3770 struct p2p_group *group = NULL; 3771 int parsed = 0; 3772 u8 noa[50]; 3773 int noa_len; 3774 3775 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3776 "P2P: Received P2P Action - P2P Presence Request"); 3777 3778 for (g = 0; g < p2p->num_groups; g++) { 3779 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3780 ETH_ALEN) == 0) { 3781 group = p2p->groups[g]; 3782 break; 3783 } 3784 } 3785 if (group == NULL) { 3786 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3787 "P2P: Ignore P2P Presence Request for unknown group " 3788 MACSTR, MAC2STR(da)); 3789 return; 3790 } 3791 3792 if (p2p_parse(data, len, &msg) < 0) { 3793 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3794 "P2P: Failed to parse P2P Presence Request"); 3795 status = P2P_SC_FAIL_INVALID_PARAMS; 3796 goto fail; 3797 } 3798 parsed = 1; 3799 3800 if (msg.noa == NULL) { 3801 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3802 "P2P: No NoA attribute in P2P Presence Request"); 3803 status = P2P_SC_FAIL_INVALID_PARAMS; 3804 goto fail; 3805 } 3806 3807 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3808 3809fail: 3810 if (p2p->cfg->get_noa) 3811 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3812 sizeof(noa)); 3813 else 3814 noa_len = -1; 3815 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3816 noa_len > 0 ? noa_len : 0, 3817 msg.dialog_token); 3818 if (parsed) 3819 p2p_parse_free(&msg); 3820 if (resp == NULL) 3821 return; 3822 3823 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3824 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3825 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3826 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3827 "P2P: Failed to send Action frame"); 3828 } 3829 wpabuf_free(resp); 3830} 3831 3832 3833static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3834 const u8 *sa, const u8 *data, size_t len) 3835{ 3836 struct p2p_message msg; 3837 3838 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3839 "P2P: Received P2P Action - P2P Presence Response"); 3840 3841 if (p2p_parse(data, len, &msg) < 0) { 3842 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3843 "P2P: Failed to parse P2P Presence Response"); 3844 return; 3845 } 3846 3847 if (msg.status == NULL || msg.noa == NULL) { 3848 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3849 "P2P: No Status or NoA attribute in P2P Presence " 3850 "Response"); 3851 p2p_parse_free(&msg); 3852 return; 3853 } 3854 3855 if (*msg.status) { 3856 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3857 "P2P: P2P Presence Request was rejected: status %u", 3858 *msg.status); 3859 p2p_parse_free(&msg); 3860 return; 3861 } 3862 3863 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3864 "P2P: P2P Presence Request was accepted"); 3865 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3866 msg.noa, msg.noa_len); 3867 /* TODO: process NoA */ 3868 p2p_parse_free(&msg); 3869} 3870 3871 3872static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3873{ 3874 struct p2p_data *p2p = eloop_ctx; 3875 3876 if (p2p->ext_listen_interval) { 3877 /* Schedule next extended listen timeout */ 3878 eloop_register_timeout(p2p->ext_listen_interval_sec, 3879 p2p->ext_listen_interval_usec, 3880 p2p_ext_listen_timeout, p2p, NULL); 3881 } 3882 3883 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3884 /* 3885 * This should not really happen, but it looks like the Listen 3886 * command may fail is something else (e.g., a scan) was 3887 * running at an inconvenient time. As a workaround, allow new 3888 * Extended Listen operation to be started. 3889 */ 3890 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous " 3891 "Extended Listen operation had not been completed - " 3892 "try again"); 3893 p2p->ext_listen_only = 0; 3894 p2p_set_state(p2p, P2P_IDLE); 3895 } 3896 3897 if (p2p->state != P2P_IDLE) { 3898 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended " 3899 "Listen timeout in active state (%s)", 3900 p2p_state_txt(p2p->state)); 3901 return; 3902 } 3903 3904 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout"); 3905 p2p->ext_listen_only = 1; 3906 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3907 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 3908 "Listen state for Extended Listen Timing"); 3909 p2p->ext_listen_only = 0; 3910 } 3911} 3912 3913 3914int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3915 unsigned int interval) 3916{ 3917 if (period > 65535 || interval > 65535 || period > interval || 3918 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3919 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3920 "P2P: Invalid Extended Listen Timing request: " 3921 "period=%u interval=%u", period, interval); 3922 return -1; 3923 } 3924 3925 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3926 3927 if (interval == 0) { 3928 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3929 "P2P: Disabling Extended Listen Timing"); 3930 p2p->ext_listen_period = 0; 3931 p2p->ext_listen_interval = 0; 3932 return 0; 3933 } 3934 3935 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3936 "P2P: Enabling Extended Listen Timing: period %u msec, " 3937 "interval %u msec", period, interval); 3938 p2p->ext_listen_period = period; 3939 p2p->ext_listen_interval = interval; 3940 p2p->ext_listen_interval_sec = interval / 1000; 3941 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3942 3943 eloop_register_timeout(p2p->ext_listen_interval_sec, 3944 p2p->ext_listen_interval_usec, 3945 p2p_ext_listen_timeout, p2p, NULL); 3946 3947 return 0; 3948} 3949 3950 3951void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3952 const u8 *ie, size_t ie_len) 3953{ 3954 struct p2p_message msg; 3955 3956 if (bssid == NULL || ie == NULL) 3957 return; 3958 3959 os_memset(&msg, 0, sizeof(msg)); 3960 if (p2p_parse_ies(ie, ie_len, &msg)) 3961 return; 3962 if (msg.minor_reason_code == NULL) 3963 return; 3964 3965 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3966 "P2P: Deauthentication notification BSSID " MACSTR 3967 " reason_code=%u minor_reason_code=%u", 3968 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3969 3970 p2p_parse_free(&msg); 3971} 3972 3973 3974void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 3975 const u8 *ie, size_t ie_len) 3976{ 3977 struct p2p_message msg; 3978 3979 if (bssid == NULL || ie == NULL) 3980 return; 3981 3982 os_memset(&msg, 0, sizeof(msg)); 3983 if (p2p_parse_ies(ie, ie_len, &msg)) 3984 return; 3985 if (msg.minor_reason_code == NULL) 3986 return; 3987 3988 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 3989 "P2P: Disassociation notification BSSID " MACSTR 3990 " reason_code=%u minor_reason_code=%u", 3991 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 3992 3993 p2p_parse_free(&msg); 3994} 3995 3996 3997void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 3998{ 3999 if (enabled) { 4000 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4001 "Device operations enabled"); 4002 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4003 } else { 4004 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4005 "Device operations disabled"); 4006 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4007 } 4008} 4009 4010 4011int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 4012{ 4013 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0) 4014 return -1; 4015 4016 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: " 4017 "reg_class %u channel %u", reg_class, channel); 4018 p2p->cfg->reg_class = reg_class; 4019 p2p->cfg->channel = channel; 4020 4021 return 0; 4022} 4023 4024 4025int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4026{ 4027 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len); 4028 if (postfix == NULL) { 4029 p2p->cfg->ssid_postfix_len = 0; 4030 return 0; 4031 } 4032 if (len > sizeof(p2p->cfg->ssid_postfix)) 4033 return -1; 4034 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4035 p2p->cfg->ssid_postfix_len = len; 4036 return 0; 4037} 4038 4039 4040int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4041 int cfg_op_channel) 4042{ 4043 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel) 4044 < 0) 4045 return -1; 4046 4047 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: " 4048 "reg_class %u channel %u", op_reg_class, op_channel); 4049 p2p->cfg->op_reg_class = op_reg_class; 4050 p2p->cfg->op_channel = op_channel; 4051 p2p->cfg->cfg_op_channel = cfg_op_channel; 4052 return 0; 4053} 4054 4055 4056int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4057 const struct p2p_channel *pref_chan) 4058{ 4059 struct p2p_channel *n; 4060 4061 if (pref_chan) { 4062 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4063 if (n == NULL) 4064 return -1; 4065 os_memcpy(n, pref_chan, 4066 num_pref_chan * sizeof(struct p2p_channel)); 4067 } else 4068 n = NULL; 4069 4070 os_free(p2p->cfg->pref_chan); 4071 p2p->cfg->pref_chan = n; 4072 p2p->cfg->num_pref_chan = num_pref_chan; 4073 4074 return 0; 4075} 4076 4077 4078int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4079 u8 *iface_addr) 4080{ 4081 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4082 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4083 return -1; 4084 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4085 return 0; 4086} 4087 4088 4089int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4090 u8 *dev_addr) 4091{ 4092 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4093 if (dev == NULL) 4094 return -1; 4095 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4096 return 0; 4097} 4098 4099 4100void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4101{ 4102 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4103 if (is_zero_ether_addr(p2p->peer_filter)) 4104 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer " 4105 "filter"); 4106 else 4107 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer " 4108 "filter for " MACSTR, MAC2STR(p2p->peer_filter)); 4109} 4110 4111 4112void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4113{ 4114 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s", 4115 enabled ? "enabled" : "disabled"); 4116 if (p2p->cross_connect == enabled) 4117 return; 4118 p2p->cross_connect = enabled; 4119 /* TODO: may need to tear down any action group where we are GO(?) */ 4120} 4121 4122 4123int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4124{ 4125 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4126 if (dev == NULL) 4127 return -1; 4128 if (dev->oper_freq <= 0) 4129 return -1; 4130 return dev->oper_freq; 4131} 4132 4133 4134void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4135{ 4136 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s", 4137 enabled ? "enabled" : "disabled"); 4138 p2p->cfg->p2p_intra_bss = enabled; 4139} 4140 4141 4142void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4143{ 4144 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list"); 4145 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4146} 4147 4148 4149int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4150 const u8 *src, const u8 *bssid, const u8 *buf, 4151 size_t len, unsigned int wait_time) 4152{ 4153 if (p2p->p2p_scan_running) { 4154 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action " 4155 "frame TX until p2p_scan completes"); 4156 if (p2p->after_scan_tx) { 4157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 4158 "previous pending Action frame TX"); 4159 os_free(p2p->after_scan_tx); 4160 } 4161 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4162 len); 4163 if (p2p->after_scan_tx == NULL) 4164 return -1; 4165 p2p->after_scan_tx->freq = freq; 4166 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4167 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4168 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4169 p2p->after_scan_tx->len = len; 4170 p2p->after_scan_tx->wait_time = wait_time; 4171 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4172 return 0; 4173 } 4174 4175 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4176 buf, len, wait_time); 4177} 4178 4179 4180void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4181 int freq_overall) 4182{ 4183 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d," 4184 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall); 4185 p2p->best_freq_24 = freq_24; 4186 p2p->best_freq_5 = freq_5; 4187 p2p->best_freq_overall = freq_overall; 4188} 4189 4190 4191const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4192{ 4193 if (p2p == NULL || p2p->go_neg_peer == NULL) 4194 return NULL; 4195 return p2p->go_neg_peer->info.p2p_device_addr; 4196} 4197 4198 4199const struct p2p_peer_info * 4200p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4201{ 4202 struct p2p_device *dev; 4203 4204 if (addr) { 4205 dev = p2p_get_device(p2p, addr); 4206 if (!dev) 4207 return NULL; 4208 4209 if (!next) { 4210 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4211 return NULL; 4212 4213 return &dev->info; 4214 } else { 4215 do { 4216 dev = dl_list_first(&dev->list, 4217 struct p2p_device, 4218 list); 4219 if (&dev->list == &p2p->devices) 4220 return NULL; 4221 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4222 } 4223 } else { 4224 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4225 if (!dev) 4226 return NULL; 4227 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4228 dev = dl_list_first(&dev->list, 4229 struct p2p_device, 4230 list); 4231 if (&dev->list == &p2p->devices) 4232 return NULL; 4233 } 4234 } 4235 4236 return &dev->info; 4237} 4238 4239#ifdef ANDROID_P2P 4240int p2p_search_in_progress(struct p2p_data *p2p) 4241{ 4242 if (p2p == NULL) 4243 return 0; 4244 4245 return p2p->state == P2P_SEARCH; 4246} 4247#endif 4248 4249int p2p_in_progress(struct p2p_data *p2p) 4250{ 4251 if (p2p == NULL) 4252 return 0; 4253 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4254 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4255 return 2; 4256 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4257} 4258 4259 4260void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4261 u8 client_timeout) 4262{ 4263 if (p2p) { 4264 p2p->go_timeout = go_timeout; 4265 p2p->client_timeout = client_timeout; 4266 } 4267} 4268 4269 4270void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4271{ 4272 if (p2p && p2p->search_delay < delay) 4273 p2p->search_delay = delay; 4274} 4275 4276 4277#ifdef CONFIG_WIFI_DISPLAY 4278 4279static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4280{ 4281 size_t g; 4282 struct p2p_group *group; 4283 4284 for (g = 0; g < p2p->num_groups; g++) { 4285 group = p2p->groups[g]; 4286 p2p_group_update_ies(group); 4287 } 4288} 4289 4290 4291int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4292{ 4293 wpabuf_free(p2p->wfd_ie_beacon); 4294 p2p->wfd_ie_beacon = ie; 4295 p2p_update_wfd_ie_groups(p2p); 4296 return 0; 4297} 4298 4299 4300int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4301{ 4302 wpabuf_free(p2p->wfd_ie_probe_req); 4303 p2p->wfd_ie_probe_req = ie; 4304 return 0; 4305} 4306 4307 4308int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4309{ 4310 wpabuf_free(p2p->wfd_ie_probe_resp); 4311 p2p->wfd_ie_probe_resp = ie; 4312 p2p_update_wfd_ie_groups(p2p); 4313 return 0; 4314} 4315 4316 4317int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4318{ 4319 wpabuf_free(p2p->wfd_ie_assoc_req); 4320 p2p->wfd_ie_assoc_req = ie; 4321 return 0; 4322} 4323 4324 4325int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4326{ 4327 wpabuf_free(p2p->wfd_ie_invitation); 4328 p2p->wfd_ie_invitation = ie; 4329 return 0; 4330} 4331 4332 4333int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4334{ 4335 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4336 p2p->wfd_ie_prov_disc_req = ie; 4337 return 0; 4338} 4339 4340 4341int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4342{ 4343 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4344 p2p->wfd_ie_prov_disc_resp = ie; 4345 return 0; 4346} 4347 4348 4349int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4350{ 4351 wpabuf_free(p2p->wfd_ie_go_neg); 4352 p2p->wfd_ie_go_neg = ie; 4353 return 0; 4354} 4355 4356 4357int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4358{ 4359 wpabuf_free(p2p->wfd_dev_info); 4360 if (elem) { 4361 p2p->wfd_dev_info = wpabuf_dup(elem); 4362 if (p2p->wfd_dev_info == NULL) 4363 return -1; 4364 } else 4365 p2p->wfd_dev_info = NULL; 4366 4367 return 0; 4368} 4369 4370 4371int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4372{ 4373 wpabuf_free(p2p->wfd_assoc_bssid); 4374 if (elem) { 4375 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4376 if (p2p->wfd_assoc_bssid == NULL) 4377 return -1; 4378 } else 4379 p2p->wfd_assoc_bssid = NULL; 4380 4381 return 0; 4382} 4383 4384 4385int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4386 const struct wpabuf *elem) 4387{ 4388 wpabuf_free(p2p->wfd_coupled_sink_info); 4389 if (elem) { 4390 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4391 if (p2p->wfd_coupled_sink_info == NULL) 4392 return -1; 4393 } else 4394 p2p->wfd_coupled_sink_info = NULL; 4395 4396 return 0; 4397} 4398 4399#endif /* CONFIG_WIFI_DISPLAY */ 4400 4401 4402int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4403 int max_disc_tu) 4404{ 4405 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4406 return -1; 4407 4408 p2p->min_disc_int = min_disc_int; 4409 p2p->max_disc_int = max_disc_int; 4410 p2p->max_disc_tu = max_disc_tu; 4411 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: " 4412 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int, 4413 max_disc_tu); 4414 4415 return 0; 4416} 4417