p2p.c revision a54fa5fb807eaeff45464139b5a7759f060cec68
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 * @age_ms: Age of the information in milliseconds 634 * @ies: IEs from the Beacon or Probe Response frame 635 * @ies_len: Length of ies buffer in octets 636 * @scan_res: Whether this was based on scan results 637 * Returns: 0 on success, -1 on failure 638 * 639 * If the scan result is for a GO, the clients in the group will also be added 640 * to the peer table. This function can also be used with some other frames 641 * like Provision Discovery Request that contains P2P Capability and P2P Device 642 * Info attributes. 643 */ 644int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 645 unsigned int age_ms, int level, const u8 *ies, 646 size_t ies_len, int scan_res) 647{ 648 struct p2p_device *dev; 649 struct p2p_message msg; 650 const u8 *p2p_dev_addr; 651 int i; 652 struct os_time time_now, time_tmp_age, entry_ts; 653 654 os_memset(&msg, 0, sizeof(msg)); 655 if (p2p_parse_ies(ies, ies_len, &msg)) { 656 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 657 "P2P: Failed to parse P2P IE for a device entry"); 658 p2p_parse_free(&msg); 659 return -1; 660 } 661 662 if (msg.p2p_device_addr) 663 p2p_dev_addr = msg.p2p_device_addr; 664 else if (msg.device_id) 665 p2p_dev_addr = msg.device_id; 666 else { 667 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 668 "P2P: Ignore scan data without P2P Device Info or " 669 "P2P Device Id"); 670 p2p_parse_free(&msg); 671 return -1; 672 } 673 674 if (!is_zero_ether_addr(p2p->peer_filter) && 675 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 676 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer " 677 "filter for " MACSTR " due to peer filter", 678 MAC2STR(p2p_dev_addr)); 679 p2p_parse_free(&msg); 680 return 0; 681 } 682 683 dev = p2p_create_device(p2p, p2p_dev_addr); 684 if (dev == NULL) { 685 p2p_parse_free(&msg); 686 return -1; 687 } 688 689 os_get_time(&time_now); 690 time_tmp_age.sec = age_ms / 1000; 691 time_tmp_age.usec = (age_ms % 1000) * 1000; 692 os_time_sub(&time_now, &time_tmp_age, &entry_ts); 693 694 /* 695 * Update the device entry only if the new peer 696 * entry is newer than the one previously stored. 697 */ 698 if (dev->last_seen.usec > 0 && 699 os_time_before(&entry_ts, &dev->last_seen)) { 700 p2p_parse_free(&msg); 701 return -1; 702 } 703 704 os_memcpy(&dev->last_seen, &entry_ts, sizeof(struct os_time)); 705 706 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 707 708 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 709 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 710 if (msg.ssid && 711 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 712 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 713 != 0)) { 714 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 715 dev->oper_ssid_len = msg.ssid[1]; 716 } 717 718 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 719 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 720 int ds_freq; 721 if (*msg.ds_params == 14) 722 ds_freq = 2484; 723 else 724 ds_freq = 2407 + *msg.ds_params * 5; 725 if (freq != ds_freq) { 726 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 727 "P2P: Update Listen frequency based on DS " 728 "Parameter Set IE: %d -> %d MHz", 729 freq, ds_freq); 730 freq = ds_freq; 731 } 732 } 733 734 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 735 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 736 "P2P: Update Listen frequency based on scan " 737 "results (" MACSTR " %d -> %d MHz (DS param %d)", 738 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 739 freq, msg.ds_params ? *msg.ds_params : -1); 740 } 741 if (scan_res) { 742 dev->listen_freq = freq; 743 if (msg.group_info) 744 dev->oper_freq = freq; 745 } 746 dev->info.level = level; 747 748 p2p_copy_wps_info(dev, 0, &msg); 749 750 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 751 wpabuf_free(dev->info.wps_vendor_ext[i]); 752 dev->info.wps_vendor_ext[i] = NULL; 753 } 754 755 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 756 if (msg.wps_vendor_ext[i] == NULL) 757 break; 758 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 759 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 760 if (dev->info.wps_vendor_ext[i] == NULL) 761 break; 762 } 763 764 if (msg.wfd_subelems) { 765 wpabuf_free(dev->info.wfd_subelems); 766 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 767 } 768 769 if (scan_res) { 770 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 771 msg.group_info, msg.group_info_len); 772 } 773 774 p2p_parse_free(&msg); 775 776 if (p2p_pending_sd_req(p2p, dev)) 777 dev->flags |= P2P_DEV_SD_SCHEDULE; 778 779 if (dev->flags & P2P_DEV_REPORTED) 780 return 0; 781 782 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 783 "P2P: Peer found with Listen frequency %d MHz", freq); 784 if (dev->flags & P2P_DEV_USER_REJECTED) { 785 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 786 "P2P: Do not report rejected device"); 787 return 0; 788 } 789 790 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 791 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 792 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 793 794 return 0; 795} 796 797 798static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 799{ 800 int i; 801 802 if (p2p->go_neg_peer == dev) { 803 /* 804 * If GO Negotiation is in progress, report that it has failed. 805 */ 806 p2p_go_neg_failed(p2p, dev, -1); 807 p2p->go_neg_peer = NULL; 808 } 809 if (p2p->invite_peer == dev) 810 p2p->invite_peer = NULL; 811 if (p2p->sd_peer == dev) 812 p2p->sd_peer = NULL; 813 if (p2p->pending_client_disc_go == dev) 814 p2p->pending_client_disc_go = NULL; 815 816 /* dev_lost() device, but only if it was previously dev_found() */ 817 if (dev->flags & P2P_DEV_REPORTED_ONCE) 818 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 819 dev->info.p2p_device_addr); 820 821 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 822 wpabuf_free(dev->info.wps_vendor_ext[i]); 823 dev->info.wps_vendor_ext[i] = NULL; 824 } 825 826 wpabuf_free(dev->info.wfd_subelems); 827 828 os_free(dev); 829} 830 831 832static int p2p_get_next_prog_freq(struct p2p_data *p2p) 833{ 834 struct p2p_channels *c; 835 struct p2p_reg_class *cla; 836 size_t cl, ch; 837 int found = 0; 838 u8 reg_class; 839 u8 channel; 840 int freq; 841 842 c = &p2p->cfg->channels; 843 for (cl = 0; cl < c->reg_classes; cl++) { 844 cla = &c->reg_class[cl]; 845 if (cla->reg_class != p2p->last_prog_scan_class) 846 continue; 847 for (ch = 0; ch < cla->channels; ch++) { 848 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 849 found = 1; 850 break; 851 } 852 } 853 if (found) 854 break; 855 } 856 857 if (!found) { 858 /* Start from beginning */ 859 reg_class = c->reg_class[0].reg_class; 860 channel = c->reg_class[0].channel[0]; 861 } else { 862 /* Pick the next channel */ 863 ch++; 864 if (ch == cla->channels) { 865 cl++; 866 if (cl == c->reg_classes) 867 cl = 0; 868 ch = 0; 869 } 870 reg_class = c->reg_class[cl].reg_class; 871 channel = c->reg_class[cl].channel[ch]; 872 } 873 874 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel); 875 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search " 876 "channel: reg_class %u channel %u -> %d MHz", 877 reg_class, channel, freq); 878 p2p->last_prog_scan_class = reg_class; 879 p2p->last_prog_scan_chan = channel; 880 881 if (freq == 2412 || freq == 2437 || freq == 2462) 882 return 0; /* No need to add social channels */ 883 return freq; 884} 885 886 887static void p2p_search(struct p2p_data *p2p) 888{ 889 int freq = 0; 890 enum p2p_scan_type type; 891 u16 pw_id = DEV_PW_DEFAULT; 892 int res; 893 894 if (p2p->drv_in_listen) { 895 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still " 896 "in Listen state - wait for it to end before " 897 "continuing"); 898 return; 899 } 900 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 901 902 if (p2p->find_type == P2P_FIND_PROGRESSIVE && 903 (freq = p2p_get_next_prog_freq(p2p)) > 0) { 904 type = P2P_SCAN_SOCIAL_PLUS_ONE; 905 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search " 906 "(+ freq %u)", freq); 907 } else { 908 type = P2P_SCAN_SOCIAL; 909 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search"); 910 } 911 912 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 913 p2p->num_req_dev_types, p2p->req_dev_types, 914 p2p->find_dev_id, pw_id); 915 if (res < 0) { 916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 917 "P2P: Scan request failed"); 918 p2p_continue_find(p2p); 919 } else if (res == 1) { 920 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 921 "p2p_scan at this point - will try again after " 922 "previous scan completes"); 923 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY); 924 } else { 925 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 926 p2p->p2p_scan_running = 1; 927 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 928 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 929 p2p, NULL); 930 } 931} 932 933 934static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 935{ 936 struct p2p_data *p2p = eloop_ctx; 937 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop"); 938 p2p_stop_find(p2p); 939} 940 941 942static int p2p_run_after_scan(struct p2p_data *p2p) 943{ 944 struct p2p_device *dev; 945 enum p2p_after_scan op; 946 947 if (p2p->after_scan_tx) { 948 /* TODO: schedule p2p_run_after_scan to be called from TX 949 * status callback(?) */ 950 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending " 951 "Action frame at p2p_scan completion"); 952 p2p->cfg->send_action(p2p->cfg->cb_ctx, 953 p2p->after_scan_tx->freq, 954 p2p->after_scan_tx->dst, 955 p2p->after_scan_tx->src, 956 p2p->after_scan_tx->bssid, 957 (u8 *) (p2p->after_scan_tx + 1), 958 p2p->after_scan_tx->len, 959 p2p->after_scan_tx->wait_time); 960 os_free(p2p->after_scan_tx); 961 p2p->after_scan_tx = NULL; 962#ifdef ANDROID_P2P 963 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan. 964 * At that moment, we will send the SD response from this context. After sending the SD response, 965 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped. 966 */ 967 return 0; 968#else 969 return 1; 970#endif 971 } 972 973 op = p2p->start_after_scan; 974 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 975 switch (op) { 976 case P2P_AFTER_SCAN_NOTHING: 977 break; 978 case P2P_AFTER_SCAN_LISTEN: 979 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 980 "requested Listen state"); 981 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 982 p2p->pending_listen_usec / 1000); 983 return 1; 984 case P2P_AFTER_SCAN_CONNECT: 985 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously " 986 "requested connect with " MACSTR, 987 MAC2STR(p2p->after_scan_peer)); 988 dev = p2p_get_device(p2p, p2p->after_scan_peer); 989 if (dev == NULL) { 990 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not " 991 "known anymore"); 992 break; 993 } 994 p2p_connect_send(p2p, dev); 995 return 1; 996 } 997 998 return 0; 999} 1000 1001 1002static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1003{ 1004 struct p2p_data *p2p = eloop_ctx; 1005 int running; 1006 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout " 1007 "(running=%d)", p2p->p2p_scan_running); 1008 running = p2p->p2p_scan_running; 1009 /* Make sure we recover from missed scan results callback */ 1010 p2p->p2p_scan_running = 0; 1011 1012 if (running) 1013 p2p_run_after_scan(p2p); 1014} 1015 1016 1017static void p2p_free_req_dev_types(struct p2p_data *p2p) 1018{ 1019 p2p->num_req_dev_types = 0; 1020 os_free(p2p->req_dev_types); 1021 p2p->req_dev_types = NULL; 1022} 1023 1024 1025int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1026 enum p2p_discovery_type type, 1027 unsigned int num_req_dev_types, const u8 *req_dev_types, 1028 const u8 *dev_id, unsigned int search_delay) 1029{ 1030 int res; 1031 1032 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)", 1033 type); 1034 if (p2p->p2p_scan_running) { 1035 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is " 1036 "already running"); 1037 } 1038 1039 p2p_free_req_dev_types(p2p); 1040 if (req_dev_types && num_req_dev_types) { 1041 p2p->req_dev_types = os_malloc(num_req_dev_types * 1042 WPS_DEV_TYPE_LEN); 1043 if (p2p->req_dev_types == NULL) 1044 return -1; 1045 os_memcpy(p2p->req_dev_types, req_dev_types, 1046 num_req_dev_types * WPS_DEV_TYPE_LEN); 1047 p2p->num_req_dev_types = num_req_dev_types; 1048 } 1049 1050 if (dev_id) { 1051 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1052 p2p->find_dev_id = p2p->find_dev_id_buf; 1053 } else 1054 p2p->find_dev_id = NULL; 1055 1056 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1057 p2p_clear_timeout(p2p); 1058 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1059 p2p->find_type = type; 1060 p2p_device_clear_reported(p2p); 1061 p2p_set_state(p2p, P2P_SEARCH); 1062 p2p->search_delay = search_delay; 1063 p2p->in_search_delay = 0; 1064 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1065 p2p->last_p2p_find_timeout = timeout; 1066 if (timeout) 1067 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1068 p2p, NULL); 1069 switch (type) { 1070 case P2P_FIND_START_WITH_FULL: 1071 case P2P_FIND_PROGRESSIVE: 1072 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1073 p2p->num_req_dev_types, 1074 p2p->req_dev_types, dev_id, 1075 DEV_PW_DEFAULT); 1076 break; 1077 case P2P_FIND_ONLY_SOCIAL: 1078 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1079 p2p->num_req_dev_types, 1080 p2p->req_dev_types, dev_id, 1081 DEV_PW_DEFAULT); 1082 break; 1083 default: 1084 return -1; 1085 } 1086 1087 if (res == 0) { 1088 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan"); 1089 p2p->p2p_scan_running = 1; 1090 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1091 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1092 p2p, NULL); 1093 } else if (res == 1) { 1094 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start " 1095 "p2p_scan at this point - will try again after " 1096 "previous scan completes"); 1097 res = 0; 1098 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY); 1099 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1100 } else { 1101 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 1102 "p2p_scan"); 1103 p2p_set_state(p2p, P2P_IDLE); 1104 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1105 } 1106 1107 return res; 1108} 1109 1110#ifdef ANDROID_P2P 1111int p2p_search_pending(struct p2p_data *p2p) 1112{ 1113 if(p2p == NULL) 1114 return 0; 1115 1116 if(p2p->state == P2P_SEARCH_WHEN_READY) 1117 return 1; 1118 1119 return 0; 1120} 1121#endif 1122 1123int p2p_other_scan_completed(struct p2p_data *p2p) 1124{ 1125 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) { 1126 p2p_set_state(p2p, P2P_SEARCH); 1127 p2p_search(p2p); 1128 return 1; 1129 } 1130 if (p2p->state != P2P_SEARCH_WHEN_READY) 1131 return 0; 1132 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find " 1133 "now that previous scan was completed"); 1134 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type, 1135 p2p->num_req_dev_types, p2p->req_dev_types, 1136 p2p->find_dev_id, p2p->search_delay) < 0) 1137 return 0; 1138 return 1; 1139} 1140 1141 1142void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1143{ 1144 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find"); 1145 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1146 p2p_clear_timeout(p2p); 1147 if (p2p->state == P2P_SEARCH || 1148 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY || 1149 p2p->state == P2P_SEARCH_WHEN_READY) 1150 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1151 p2p_set_state(p2p, P2P_IDLE); 1152 p2p_free_req_dev_types(p2p); 1153 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1154 p2p->go_neg_peer = NULL; 1155 p2p->sd_peer = NULL; 1156 p2p->invite_peer = NULL; 1157 p2p_stop_listen_for_freq(p2p, freq); 1158} 1159 1160 1161void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1162{ 1163 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1164 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen " 1165 "since we are on correct channel for response"); 1166 return; 1167 } 1168 if (p2p->in_listen) { 1169 p2p->in_listen = 0; 1170 p2p_clear_timeout(p2p); 1171 } 1172 if (p2p->drv_in_listen) { 1173 /* 1174 * The driver may not deliver callback to p2p_listen_end() 1175 * when the operation gets canceled, so clear the internal 1176 * variable that is tracking driver state. 1177 */ 1178 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear " 1179 "drv_in_listen (%d)", p2p->drv_in_listen); 1180 p2p->drv_in_listen = 0; 1181 } 1182 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1183} 1184 1185 1186void p2p_stop_find(struct p2p_data *p2p) 1187{ 1188 p2p_stop_find_for_freq(p2p, 0); 1189} 1190 1191 1192static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1193 unsigned int force_freq, 1194 unsigned int pref_freq) 1195{ 1196 u8 op_class, op_channel; 1197 unsigned int freq = force_freq ? force_freq : pref_freq; 1198 1199 if (p2p_freq_to_channel(p2p->cfg->country, freq, 1200 &op_class, &op_channel) < 0) { 1201 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1202 "P2P: Unsupported frequency %u MHz", freq); 1203 return -1; 1204 } 1205 1206 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) { 1207 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1208 "P2P: Frequency %u MHz (oper_class %u channel %u) not " 1209 "allowed for P2P", freq, op_class, op_channel); 1210 return -1; 1211 } 1212 1213 p2p->op_reg_class = op_class; 1214 p2p->op_channel = op_channel; 1215 1216 if (force_freq) { 1217 p2p->channels.reg_classes = 1; 1218 p2p->channels.reg_class[0].channels = 1; 1219 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1220 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1221 } else { 1222 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1223 sizeof(struct p2p_channels)); 1224 } 1225 1226 return 0; 1227} 1228 1229 1230static void p2p_prepare_channel_best(struct p2p_data *p2p) 1231{ 1232 u8 op_class, op_channel; 1233 1234 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1235 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1236 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall, 1237 &op_class, &op_channel) == 0) { 1238 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best " 1239 "overall channel as operating channel preference"); 1240 p2p->op_reg_class = op_class; 1241 p2p->op_channel = op_channel; 1242 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1243 p2p_supported_freq(p2p, p2p->best_freq_5) && 1244 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 1245 &op_class, &op_channel) == 0) { 1246 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz " 1247 "channel as operating channel preference"); 1248 p2p->op_reg_class = op_class; 1249 p2p->op_channel = op_channel; 1250 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1251 p2p_supported_freq(p2p, p2p->best_freq_24) && 1252 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 1253 &op_class, &op_channel) == 0) { 1254 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 " 1255 "GHz channel as operating channel preference"); 1256 p2p->op_reg_class = op_class; 1257 p2p->op_channel = op_channel; 1258 } else { 1259 p2p->op_reg_class = p2p->cfg->op_reg_class; 1260 p2p->op_channel = p2p->cfg->op_channel; 1261 } 1262 1263 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1264 sizeof(struct p2p_channels)); 1265} 1266 1267 1268/** 1269 * p2p_prepare_channel - Select operating channel for GO Negotiation 1270 * @p2p: P2P module context from p2p_init() 1271 * @dev: Selected peer device 1272 * @force_freq: Forced frequency in MHz or 0 if not forced 1273 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1274 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1275 * 1276 * This function is used to do initial operating channel selection for GO 1277 * Negotiation prior to having received peer information. The selected channel 1278 * may be further optimized in p2p_reselect_channel() once the peer information 1279 * is available. 1280 */ 1281static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1282 unsigned int force_freq, unsigned int pref_freq) 1283{ 1284 if (force_freq || pref_freq) { 1285 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0) 1286 return -1; 1287 } else { 1288 p2p_prepare_channel_best(p2p); 1289 } 1290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1291 "P2P: Own preference for operation channel: " 1292 "Operating Class %u Channel %u%s", 1293 p2p->op_reg_class, p2p->op_channel, 1294 force_freq ? " (forced)" : ""); 1295 1296 if (force_freq) 1297 dev->flags |= P2P_DEV_FORCE_FREQ; 1298 else 1299 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1300 1301 return 0; 1302} 1303 1304 1305static void p2p_set_dev_persistent(struct p2p_device *dev, 1306 int persistent_group) 1307{ 1308 switch (persistent_group) { 1309 case 0: 1310 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1311 P2P_DEV_PREFER_PERSISTENT_RECONN); 1312 break; 1313 case 1: 1314 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1315 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1316 break; 1317 case 2: 1318 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1319 P2P_DEV_PREFER_PERSISTENT_RECONN; 1320 break; 1321 } 1322} 1323 1324 1325int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1326 enum p2p_wps_method wps_method, 1327 int go_intent, const u8 *own_interface_addr, 1328 unsigned int force_freq, int persistent_group, 1329 const u8 *force_ssid, size_t force_ssid_len, 1330 int pd_before_go_neg, unsigned int pref_freq) 1331{ 1332 struct p2p_device *dev; 1333 1334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1335 "P2P: Request to start group negotiation - peer=" MACSTR 1336 " GO Intent=%d Intended Interface Address=" MACSTR 1337 " wps_method=%d persistent_group=%d pd_before_go_neg=%d", 1338 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1339 wps_method, persistent_group, pd_before_go_neg); 1340 1341 dev = p2p_get_device(p2p, peer_addr); 1342 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1343 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1344 "P2P: Cannot connect to unknown P2P Device " MACSTR, 1345 MAC2STR(peer_addr)); 1346 return -1; 1347 } 1348 1349 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1350 return -1; 1351 1352 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1353 if (!(dev->info.dev_capab & 1354 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1355 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1356 "P2P: Cannot connect to P2P Device " MACSTR 1357 " that is in a group and is not discoverable", 1358 MAC2STR(peer_addr)); 1359 return -1; 1360 } 1361 if (dev->oper_freq <= 0) { 1362 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1363 "P2P: Cannot connect to P2P Device " MACSTR 1364 " with incomplete information", 1365 MAC2STR(peer_addr)); 1366 return -1; 1367 } 1368 1369 /* 1370 * First, try to connect directly. If the peer does not 1371 * acknowledge frames, assume it is sleeping and use device 1372 * discoverability via the GO at that point. 1373 */ 1374 } 1375 1376 p2p->ssid_set = 0; 1377 if (force_ssid) { 1378 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1379 force_ssid, force_ssid_len); 1380 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1381 p2p->ssid_len = force_ssid_len; 1382 p2p->ssid_set = 1; 1383 } 1384 1385 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1386 dev->flags &= ~P2P_DEV_USER_REJECTED; 1387 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1388 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1389 if (pd_before_go_neg) 1390 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1391 else { 1392 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1393 /* 1394 * Assign dialog token here to use the same value in each 1395 * retry within the same GO Negotiation exchange. 1396 */ 1397 dev->dialog_token++; 1398 if (dev->dialog_token == 0) 1399 dev->dialog_token = 1; 1400 } 1401 dev->connect_reqs = 0; 1402 dev->go_neg_req_sent = 0; 1403 dev->go_state = UNKNOWN_GO; 1404 p2p_set_dev_persistent(dev, persistent_group); 1405 p2p->go_intent = go_intent; 1406 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1407 1408 if (p2p->state != P2P_IDLE) 1409 p2p_stop_find(p2p); 1410 1411 if (p2p->after_scan_tx) { 1412 /* 1413 * We need to drop the pending frame to avoid issues with the 1414 * new GO Negotiation, e.g., when the pending frame was from a 1415 * previous attempt at starting a GO Negotiation. 1416 */ 1417 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 1418 "previous pending Action frame TX that was waiting " 1419 "for p2p_scan completion"); 1420 os_free(p2p->after_scan_tx); 1421 p2p->after_scan_tx = NULL; 1422 } 1423 1424 dev->wps_method = wps_method; 1425 dev->status = P2P_SC_SUCCESS; 1426 1427 if (p2p->p2p_scan_running) { 1428 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1429 "P2P: p2p_scan running - delay connect send"); 1430 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1431 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1432 return 0; 1433 } 1434 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1435 1436 return p2p_connect_send(p2p, dev); 1437} 1438 1439 1440int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1441 enum p2p_wps_method wps_method, 1442 int go_intent, const u8 *own_interface_addr, 1443 unsigned int force_freq, int persistent_group, 1444 const u8 *force_ssid, size_t force_ssid_len, 1445 unsigned int pref_freq) 1446{ 1447 struct p2p_device *dev; 1448 1449 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1450 "P2P: Request to authorize group negotiation - peer=" MACSTR 1451 " GO Intent=%d Intended Interface Address=" MACSTR 1452 " wps_method=%d persistent_group=%d", 1453 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1454 wps_method, persistent_group); 1455 1456 dev = p2p_get_device(p2p, peer_addr); 1457 if (dev == NULL) { 1458 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1459 "P2P: Cannot authorize unknown P2P Device " MACSTR, 1460 MAC2STR(peer_addr)); 1461 return -1; 1462 } 1463 1464 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 1465 return -1; 1466 1467 p2p->ssid_set = 0; 1468 if (force_ssid) { 1469 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1470 force_ssid, force_ssid_len); 1471 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1472 p2p->ssid_len = force_ssid_len; 1473 p2p->ssid_set = 1; 1474 } 1475 1476 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1477 dev->flags &= ~P2P_DEV_USER_REJECTED; 1478 dev->go_neg_req_sent = 0; 1479 dev->go_state = UNKNOWN_GO; 1480 p2p_set_dev_persistent(dev, persistent_group); 1481 p2p->go_intent = go_intent; 1482 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1483 1484 dev->wps_method = wps_method; 1485 dev->status = P2P_SC_SUCCESS; 1486 1487 return 0; 1488} 1489 1490 1491void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1492 struct p2p_device *dev, struct p2p_message *msg) 1493{ 1494 os_get_time(&dev->last_seen); 1495 1496 p2p_copy_wps_info(dev, 0, msg); 1497 1498 if (msg->listen_channel) { 1499 int freq; 1500 freq = p2p_channel_to_freq((char *) msg->listen_channel, 1501 msg->listen_channel[3], 1502 msg->listen_channel[4]); 1503 if (freq < 0) { 1504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1505 "P2P: Unknown peer Listen channel: " 1506 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1507 msg->listen_channel[0], 1508 msg->listen_channel[1], 1509 msg->listen_channel[2], 1510 msg->listen_channel[3], 1511 msg->listen_channel[4]); 1512 } else { 1513 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update " 1514 "peer " MACSTR " Listen channel: %u -> %u MHz", 1515 MAC2STR(dev->info.p2p_device_addr), 1516 dev->listen_freq, freq); 1517 dev->listen_freq = freq; 1518 } 1519 } 1520 1521 if (msg->wfd_subelems) { 1522 wpabuf_free(dev->info.wfd_subelems); 1523 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1524 } 1525 1526 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1527 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1528 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1529 "P2P: Completed device entry based on data from " 1530 "GO Negotiation Request"); 1531 } else { 1532 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1533 "P2P: Created device entry based on GO Neg Req: " 1534 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1535 "listen_freq=%d", 1536 MAC2STR(dev->info.p2p_device_addr), 1537 dev->info.dev_capab, dev->info.group_capab, 1538 dev->info.device_name, dev->listen_freq); 1539 } 1540 1541 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1542 1543 if (dev->flags & P2P_DEV_USER_REJECTED) { 1544 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1545 "P2P: Do not report rejected device"); 1546 return; 1547 } 1548 1549 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1550 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1551 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1552} 1553 1554 1555void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1556{ 1557 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1558 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1559 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1560 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1561 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1562} 1563 1564 1565int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1566{ 1567 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1568 p2p_random(params->passphrase, 8); 1569 return 0; 1570} 1571 1572 1573void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1574{ 1575 struct p2p_go_neg_results res; 1576 int go = peer->go_state == LOCAL_GO; 1577 struct p2p_channels intersection; 1578 int freqs; 1579 size_t i, j; 1580 1581 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1582 "P2P: GO Negotiation with " MACSTR " completed (%s will be " 1583 "GO)", MAC2STR(peer->info.p2p_device_addr), 1584 go ? "local end" : "peer"); 1585 1586 os_memset(&res, 0, sizeof(res)); 1587 res.role_go = go; 1588 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1589 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1590 res.wps_method = peer->wps_method; 1591 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1592 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1593 res.persistent_group = 2; 1594 else 1595 res.persistent_group = 1; 1596 } 1597 1598 if (go) { 1599 /* Setup AP mode for WPS provisioning */ 1600 res.freq = p2p_channel_to_freq(p2p->cfg->country, 1601 p2p->op_reg_class, 1602 p2p->op_channel); 1603 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1604 res.ssid_len = p2p->ssid_len; 1605 p2p_random(res.passphrase, 8); 1606 } else { 1607 res.freq = peer->oper_freq; 1608 if (p2p->ssid_len) { 1609 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1610 res.ssid_len = p2p->ssid_len; 1611 } 1612 } 1613 1614 p2p_channels_intersect(&p2p->channels, &peer->channels, 1615 &intersection); 1616 freqs = 0; 1617 for (i = 0; i < intersection.reg_classes; i++) { 1618 struct p2p_reg_class *c = &intersection.reg_class[i]; 1619 if (freqs + 1 == P2P_MAX_CHANNELS) 1620 break; 1621 for (j = 0; j < c->channels; j++) { 1622 int freq; 1623 if (freqs + 1 == P2P_MAX_CHANNELS) 1624 break; 1625 freq = p2p_channel_to_freq(peer->country, c->reg_class, 1626 c->channel[j]); 1627 if (freq < 0) 1628 continue; 1629 res.freq_list[freqs++] = freq; 1630 } 1631 } 1632 1633 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1634 1635 p2p_clear_timeout(p2p); 1636 p2p->ssid_set = 0; 1637 peer->go_neg_req_sent = 0; 1638 peer->wps_method = WPS_NOT_READY; 1639 1640 p2p_set_state(p2p, P2P_PROVISIONING); 1641 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1642} 1643 1644 1645static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1646 const u8 *data, size_t len, int rx_freq) 1647{ 1648 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1649 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1650 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1651 1652 if (len < 1) 1653 return; 1654 1655 switch (data[0]) { 1656 case P2P_GO_NEG_REQ: 1657 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1658 break; 1659 case P2P_GO_NEG_RESP: 1660 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1661 break; 1662 case P2P_GO_NEG_CONF: 1663 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1664 break; 1665 case P2P_INVITATION_REQ: 1666 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1667 rx_freq); 1668 break; 1669 case P2P_INVITATION_RESP: 1670 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1671 break; 1672 case P2P_PROV_DISC_REQ: 1673 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1674 break; 1675 case P2P_PROV_DISC_RESP: 1676 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1677 break; 1678 case P2P_DEV_DISC_REQ: 1679 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1680 break; 1681 case P2P_DEV_DISC_RESP: 1682 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1683 break; 1684 default: 1685 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1686 "P2P: Unsupported P2P Public Action frame type %d", 1687 data[0]); 1688 break; 1689 } 1690} 1691 1692 1693static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1694 const u8 *sa, const u8 *bssid, const u8 *data, 1695 size_t len, int freq) 1696{ 1697 if (len < 1) 1698 return; 1699 1700 switch (data[0]) { 1701 case WLAN_PA_VENDOR_SPECIFIC: 1702 data++; 1703 len--; 1704 if (len < 3) 1705 return; 1706 if (WPA_GET_BE24(data) != OUI_WFA) 1707 return; 1708 1709 data += 3; 1710 len -= 3; 1711 if (len < 1) 1712 return; 1713 1714 if (*data != P2P_OUI_TYPE) 1715 return; 1716 1717 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq); 1718 break; 1719 case WLAN_PA_GAS_INITIAL_REQ: 1720 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1721 break; 1722 case WLAN_PA_GAS_INITIAL_RESP: 1723 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1724 break; 1725 case WLAN_PA_GAS_COMEBACK_REQ: 1726 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1727 break; 1728 case WLAN_PA_GAS_COMEBACK_RESP: 1729 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1730 break; 1731 } 1732} 1733 1734 1735void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1736 const u8 *bssid, u8 category, 1737 const u8 *data, size_t len, int freq) 1738{ 1739 if (category == WLAN_ACTION_PUBLIC) { 1740 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1741 return; 1742 } 1743 1744 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1745 return; 1746 1747 if (len < 4) 1748 return; 1749 1750 if (WPA_GET_BE24(data) != OUI_WFA) 1751 return; 1752 data += 3; 1753 len -= 3; 1754 1755 if (*data != P2P_OUI_TYPE) 1756 return; 1757 data++; 1758 len--; 1759 1760 /* P2P action frame */ 1761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1762 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa)); 1763 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1764 1765 if (len < 1) 1766 return; 1767 switch (data[0]) { 1768 case P2P_NOA: 1769 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1770 "P2P: Received P2P Action - Notice of Absence"); 1771 /* TODO */ 1772 break; 1773 case P2P_PRESENCE_REQ: 1774 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1775 break; 1776 case P2P_PRESENCE_RESP: 1777 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1778 break; 1779 case P2P_GO_DISC_REQ: 1780 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 1781 break; 1782 default: 1783 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1784 "P2P: Received P2P Action - unknown type %u", data[0]); 1785 break; 1786 } 1787} 1788 1789 1790static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 1791{ 1792 struct p2p_data *p2p = eloop_ctx; 1793 if (p2p->go_neg_peer == NULL) 1794 return; 1795 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1796 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 1797 p2p_connect_send(p2p, p2p->go_neg_peer); 1798} 1799 1800 1801static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 1802{ 1803 struct p2p_data *p2p = eloop_ctx; 1804 if (p2p->invite_peer == NULL) 1805 return; 1806 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1807 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr); 1808} 1809 1810 1811static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 1812 const u8 *ie, size_t ie_len) 1813{ 1814 struct p2p_message msg; 1815 struct p2p_device *dev; 1816 1817 os_memset(&msg, 0, sizeof(msg)); 1818 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 1819 { 1820 p2p_parse_free(&msg); 1821 return; /* not a P2P probe */ 1822 } 1823 1824 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 1825 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 1826 != 0) { 1827 /* The Probe Request is not part of P2P Device Discovery. It is 1828 * not known whether the source address of the frame is the P2P 1829 * Device Address or P2P Interface Address. Do not add a new 1830 * peer entry based on this frames. 1831 */ 1832 p2p_parse_free(&msg); 1833 return; 1834 } 1835 1836 dev = p2p_get_device(p2p, addr); 1837 if (dev) { 1838 if (dev->country[0] == 0 && msg.listen_channel) 1839 os_memcpy(dev->country, msg.listen_channel, 3); 1840 os_get_time(&dev->last_seen); 1841 p2p_parse_free(&msg); 1842 return; /* already known */ 1843 } 1844 1845 dev = p2p_create_device(p2p, addr); 1846 if (dev == NULL) { 1847 p2p_parse_free(&msg); 1848 return; 1849 } 1850 1851 os_get_time(&dev->last_seen); 1852 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 1853 1854 if (msg.listen_channel) { 1855 os_memcpy(dev->country, msg.listen_channel, 3); 1856 dev->listen_freq = p2p_channel_to_freq(dev->country, 1857 msg.listen_channel[3], 1858 msg.listen_channel[4]); 1859 } 1860 1861 p2p_copy_wps_info(dev, 1, &msg); 1862 1863 if (msg.wfd_subelems) { 1864 wpabuf_free(dev->info.wfd_subelems); 1865 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1866 } 1867 1868 p2p_parse_free(&msg); 1869 1870 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 1871 "P2P: Created device entry based on Probe Req: " MACSTR 1872 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 1873 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 1874 dev->info.group_capab, dev->info.device_name, 1875 dev->listen_freq); 1876} 1877 1878 1879struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 1880 const u8 *addr, 1881 struct p2p_message *msg) 1882{ 1883 struct p2p_device *dev; 1884 1885 dev = p2p_get_device(p2p, addr); 1886 if (dev) { 1887 os_get_time(&dev->last_seen); 1888 return dev; /* already known */ 1889 } 1890 1891 dev = p2p_create_device(p2p, addr); 1892 if (dev == NULL) 1893 return NULL; 1894 1895 p2p_add_dev_info(p2p, addr, dev, msg); 1896 1897 return dev; 1898} 1899 1900 1901static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 1902{ 1903 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 1904 return 1; 1905 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 1906 WPA_GET_BE32(&req_dev_type[2]) == 0 && 1907 WPA_GET_BE16(&req_dev_type[6]) == 0) 1908 return 1; /* Category match with wildcard OUI/sub-category */ 1909 return 0; 1910} 1911 1912 1913int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 1914 size_t num_req_dev_type) 1915{ 1916 size_t i; 1917 for (i = 0; i < num_req_dev_type; i++) { 1918 if (dev_type_match(dev_type, req_dev_type[i])) 1919 return 1; 1920 } 1921 return 0; 1922} 1923 1924 1925/** 1926 * p2p_match_dev_type - Match local device type with requested type 1927 * @p2p: P2P module context from p2p_init() 1928 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1929 * Returns: 1 on match, 0 on mismatch 1930 * 1931 * This function can be used to match the Requested Device Type attribute in 1932 * WPS IE with the local device types for deciding whether to reply to a Probe 1933 * Request frame. 1934 */ 1935int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 1936{ 1937 struct wps_parse_attr attr; 1938 size_t i; 1939 1940 if (wps_parse_msg(wps, &attr)) 1941 return 1; /* assume no Requested Device Type attributes */ 1942 1943 if (attr.num_req_dev_type == 0) 1944 return 1; /* no Requested Device Type attributes -> match */ 1945 1946 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 1947 attr.num_req_dev_type)) 1948 return 1; /* Own Primary Device Type matches */ 1949 1950 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) 1951 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 1952 attr.req_dev_type, 1953 attr.num_req_dev_type)) 1954 return 1; /* Own Secondary Device Type matches */ 1955 1956 /* No matching device type found */ 1957 return 0; 1958} 1959 1960 1961struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p) 1962{ 1963 struct wpabuf *buf; 1964 u8 *len; 1965 int pw_id = -1; 1966 size_t extra = 0; 1967 1968#ifdef CONFIG_WIFI_DISPLAY 1969 if (p2p->wfd_ie_probe_resp) 1970 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 1971#endif /* CONFIG_WIFI_DISPLAY */ 1972 1973 buf = wpabuf_alloc(1000 + extra); 1974 if (buf == NULL) 1975 return NULL; 1976 1977 if (p2p->go_neg_peer) { 1978 /* Advertise immediate availability of WPS credential */ 1979 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 1980 } 1981 1982 p2p_build_wps_ie(p2p, buf, pw_id, 1); 1983 1984#ifdef CONFIG_WIFI_DISPLAY 1985 if (p2p->wfd_ie_probe_resp) 1986 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 1987#endif /* CONFIG_WIFI_DISPLAY */ 1988 1989 /* P2P IE */ 1990 len = p2p_buf_add_ie_hdr(buf); 1991 p2p_buf_add_capability(buf, p2p->dev_capab & 1992 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 1993 if (p2p->ext_listen_interval) 1994 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1995 p2p->ext_listen_interval); 1996 p2p_buf_add_device_info(buf, p2p, NULL); 1997 p2p_buf_update_ie_hdr(buf, len); 1998 1999 return buf; 2000} 2001 2002 2003static int is_11b(u8 rate) 2004{ 2005 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16; 2006} 2007 2008 2009static int supp_rates_11b_only(struct ieee802_11_elems *elems) 2010{ 2011 int num_11b = 0, num_others = 0; 2012 int i; 2013 2014 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL) 2015 return 0; 2016 2017 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) { 2018 if (is_11b(elems->supp_rates[i])) 2019 num_11b++; 2020 else 2021 num_others++; 2022 } 2023 2024 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len; 2025 i++) { 2026 if (is_11b(elems->ext_supp_rates[i])) 2027 num_11b++; 2028 else 2029 num_others++; 2030 } 2031 2032 return num_11b > 0 && num_others == 0; 2033} 2034 2035 2036static enum p2p_probe_req_status 2037p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2038 const u8 *bssid, const u8 *ie, size_t ie_len) 2039{ 2040 struct ieee802_11_elems elems; 2041 struct wpabuf *buf; 2042 struct ieee80211_mgmt *resp; 2043 struct p2p_message msg; 2044 struct wpabuf *ies; 2045 2046 if (!p2p->in_listen || !p2p->drv_in_listen) { 2047 /* not in Listen state - ignore Probe Request */ 2048 return P2P_PREQ_NOT_LISTEN; 2049 } 2050 2051 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2052 ParseFailed) { 2053 /* Ignore invalid Probe Request frames */ 2054 return P2P_PREQ_MALFORMED; 2055 } 2056 2057 if (elems.p2p == NULL) { 2058 /* not a P2P probe - ignore it */ 2059 return P2P_PREQ_NOT_P2P; 2060 } 2061 2062 if (dst && !is_broadcast_ether_addr(dst) && 2063 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2064 /* Not sent to the broadcast address or our P2P Device Address 2065 */ 2066 return P2P_PREQ_NOT_PROCESSED; 2067 } 2068 2069 if (bssid && !is_broadcast_ether_addr(bssid)) { 2070 /* Not sent to the Wildcard BSSID */ 2071 return P2P_PREQ_NOT_PROCESSED; 2072 } 2073 2074 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2075 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2076 0) { 2077 /* not using P2P Wildcard SSID - ignore */ 2078 return P2P_PREQ_NOT_PROCESSED; 2079 } 2080 2081 if (supp_rates_11b_only(&elems)) { 2082 /* Indicates support for 11b rates only */ 2083 return P2P_PREQ_NOT_P2P; 2084 } 2085 2086 os_memset(&msg, 0, sizeof(msg)); 2087 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2088 /* Could not parse P2P attributes */ 2089 return P2P_PREQ_NOT_P2P; 2090 } 2091 2092 if (msg.device_id && 2093 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2094 /* Device ID did not match */ 2095 p2p_parse_free(&msg); 2096 return P2P_PREQ_NOT_PROCESSED; 2097 } 2098 2099 /* Check Requested Device Type match */ 2100 if (msg.wps_attributes && 2101 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2102 /* No match with Requested Device Type */ 2103 p2p_parse_free(&msg); 2104 return P2P_PREQ_NOT_PROCESSED; 2105 } 2106 p2p_parse_free(&msg); 2107 2108 if (!p2p->cfg->send_probe_resp) { 2109 /* Response generated elsewhere */ 2110 return P2P_PREQ_NOT_PROCESSED; 2111 } 2112 2113 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2114 "P2P: Reply to P2P Probe Request in Listen state"); 2115 2116 /* 2117 * We do not really have a specific BSS that this frame is advertising, 2118 * so build a frame that has some information in valid format. This is 2119 * really only used for discovery purposes, not to learn exact BSS 2120 * parameters. 2121 */ 2122 ies = p2p_build_probe_resp_ies(p2p); 2123 if (ies == NULL) 2124 return P2P_PREQ_NOT_PROCESSED; 2125 2126 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2127 if (buf == NULL) { 2128 wpabuf_free(ies); 2129 return P2P_PREQ_NOT_PROCESSED; 2130 } 2131 2132 resp = NULL; 2133 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp); 2134 2135 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2136 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2137 os_memcpy(resp->da, addr, ETH_ALEN); 2138 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2139 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2140 resp->u.probe_resp.beacon_int = host_to_le16(100); 2141 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2142 resp->u.probe_resp.capab_info = 2143 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2144 WLAN_CAPABILITY_PRIVACY | 2145 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2146 2147 wpabuf_put_u8(buf, WLAN_EID_SSID); 2148 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2149 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2150 2151 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2152 wpabuf_put_u8(buf, 8); 2153 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2154 wpabuf_put_u8(buf, 90 / 5); 2155 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2156 wpabuf_put_u8(buf, 180 / 5); 2157 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2158 wpabuf_put_u8(buf, 360 / 5); 2159 wpabuf_put_u8(buf, 480 / 5); 2160 wpabuf_put_u8(buf, 540 / 5); 2161 2162 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2163 wpabuf_put_u8(buf, 1); 2164 wpabuf_put_u8(buf, p2p->cfg->channel); 2165 2166 wpabuf_put_buf(buf, ies); 2167 wpabuf_free(ies); 2168 2169 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf); 2170 2171 wpabuf_free(buf); 2172 2173 return P2P_PREQ_NOT_PROCESSED; 2174} 2175 2176 2177enum p2p_probe_req_status 2178p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2179 const u8 *bssid, const u8 *ie, size_t ie_len) 2180{ 2181 enum p2p_probe_req_status res; 2182 2183 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2184 2185 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len); 2186 2187 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2188 p2p->go_neg_peer && 2189 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2190 == 0) { 2191 /* Received a Probe Request from GO Negotiation peer */ 2192 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2193 "P2P: Found GO Negotiation peer - try to start GO " 2194 "negotiation from timeout"); 2195 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2196 return P2P_PREQ_PROCESSED; 2197 } 2198 2199 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2200 p2p->invite_peer && 2201 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2202 == 0) { 2203 /* Received a Probe Request from Invite peer */ 2204 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2205 "P2P: Found Invite peer - try to start Invite from " 2206 "timeout"); 2207 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2208 return P2P_PREQ_PROCESSED; 2209 } 2210 2211 return res; 2212} 2213 2214 2215static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2216 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2217{ 2218 struct wpabuf *tmp; 2219 u8 *lpos; 2220 size_t tmplen; 2221 int res; 2222 u8 group_capab; 2223 2224 if (p2p_ie == NULL) 2225 return 0; /* WLAN AP is not a P2P manager */ 2226 2227 /* 2228 * (Re)Association Request - P2P IE 2229 * P2P Capability attribute (shall be present) 2230 * P2P Interface attribute (present if concurrent device and 2231 * P2P Management is enabled) 2232 */ 2233 tmp = wpabuf_alloc(200); 2234 if (tmp == NULL) 2235 return -1; 2236 2237 lpos = p2p_buf_add_ie_hdr(tmp); 2238 group_capab = 0; 2239 if (p2p->num_groups > 0) { 2240 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2241 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2242 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2243 p2p->cross_connect) 2244 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2245 } 2246 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2247 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2248 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2249 p2p_buf_add_p2p_interface(tmp, p2p); 2250 p2p_buf_update_ie_hdr(tmp, lpos); 2251 2252 tmplen = wpabuf_len(tmp); 2253 if (tmplen > len) 2254 res = -1; 2255 else { 2256 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2257 res = tmplen; 2258 } 2259 wpabuf_free(tmp); 2260 2261 return res; 2262} 2263 2264 2265int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2266 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2267{ 2268 struct wpabuf *tmp; 2269 u8 *lpos; 2270 struct p2p_device *peer; 2271 size_t tmplen; 2272 int res; 2273 size_t extra = 0; 2274 2275 if (!p2p_group) 2276 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2277 2278#ifdef CONFIG_WIFI_DISPLAY 2279 if (p2p->wfd_ie_assoc_req) 2280 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2281#endif /* CONFIG_WIFI_DISPLAY */ 2282 2283 /* 2284 * (Re)Association Request - P2P IE 2285 * P2P Capability attribute (shall be present) 2286 * Extended Listen Timing (may be present) 2287 * P2P Device Info attribute (shall be present) 2288 */ 2289 tmp = wpabuf_alloc(200 + extra); 2290 if (tmp == NULL) 2291 return -1; 2292 2293#ifdef CONFIG_WIFI_DISPLAY 2294 if (p2p->wfd_ie_assoc_req) 2295 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2296#endif /* CONFIG_WIFI_DISPLAY */ 2297 2298 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2299 2300 lpos = p2p_buf_add_ie_hdr(tmp); 2301 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2302 if (p2p->ext_listen_interval) 2303 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2304 p2p->ext_listen_interval); 2305 p2p_buf_add_device_info(tmp, p2p, peer); 2306 p2p_buf_update_ie_hdr(tmp, lpos); 2307 2308 tmplen = wpabuf_len(tmp); 2309 if (tmplen > len) 2310 res = -1; 2311 else { 2312 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2313 res = tmplen; 2314 } 2315 wpabuf_free(tmp); 2316 2317 return res; 2318} 2319 2320 2321int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2322{ 2323 struct wpabuf *p2p_ie; 2324 int ret; 2325 2326 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2327 if (p2p_ie == NULL) 2328 return 0; 2329 2330 ret = p2p_attr_text(p2p_ie, buf, end); 2331 wpabuf_free(p2p_ie); 2332 return ret; 2333} 2334 2335 2336int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2337{ 2338 struct p2p_message msg; 2339 2340 os_memset(&msg, 0, sizeof(msg)); 2341 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2342 return -1; 2343 2344 if (msg.p2p_device_addr) { 2345 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2346 return 0; 2347 } else if (msg.device_id) { 2348 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2349 return 0; 2350 } 2351 return -1; 2352} 2353 2354 2355int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2356{ 2357 struct wpabuf *p2p_ie; 2358 int ret; 2359 2360 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2361 P2P_IE_VENDOR_TYPE); 2362 if (p2p_ie == NULL) 2363 return -1; 2364 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2365 wpabuf_free(p2p_ie); 2366 return ret; 2367} 2368 2369 2370static void p2p_clear_go_neg(struct p2p_data *p2p) 2371{ 2372 p2p->go_neg_peer = NULL; 2373 p2p_clear_timeout(p2p); 2374 p2p_set_state(p2p, P2P_IDLE); 2375} 2376 2377 2378void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2379{ 2380 if (p2p->go_neg_peer == NULL) { 2381 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2382 "P2P: No pending Group Formation - " 2383 "ignore WPS registration success notification"); 2384 return; /* No pending Group Formation */ 2385 } 2386 2387 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2388 0) { 2389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2390 "P2P: Ignore WPS registration success notification " 2391 "for " MACSTR " (GO Negotiation peer " MACSTR ")", 2392 MAC2STR(mac_addr), 2393 MAC2STR(p2p->go_neg_peer->intended_addr)); 2394 return; /* Ignore unexpected peer address */ 2395 } 2396 2397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2398 "P2P: Group Formation completed successfully with " MACSTR, 2399 MAC2STR(mac_addr)); 2400 2401 p2p_clear_go_neg(p2p); 2402} 2403 2404 2405void p2p_group_formation_failed(struct p2p_data *p2p) 2406{ 2407 if (p2p->go_neg_peer == NULL) { 2408 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2409 "P2P: No pending Group Formation - " 2410 "ignore group formation failure notification"); 2411 return; /* No pending Group Formation */ 2412 } 2413 2414 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2415 "P2P: Group Formation failed with " MACSTR, 2416 MAC2STR(p2p->go_neg_peer->intended_addr)); 2417 2418 p2p_clear_go_neg(p2p); 2419} 2420 2421 2422struct p2p_data * p2p_init(const struct p2p_config *cfg) 2423{ 2424 struct p2p_data *p2p; 2425 2426 if (cfg->max_peers < 1) 2427 return NULL; 2428 2429 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2430 if (p2p == NULL) 2431 return NULL; 2432 p2p->cfg = (struct p2p_config *) (p2p + 1); 2433 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2434 if (cfg->dev_name) 2435 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2436 if (cfg->manufacturer) 2437 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2438 if (cfg->model_name) 2439 p2p->cfg->model_name = os_strdup(cfg->model_name); 2440 if (cfg->model_number) 2441 p2p->cfg->model_number = os_strdup(cfg->model_number); 2442 if (cfg->serial_number) 2443 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2444 if (cfg->pref_chan) { 2445 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2446 sizeof(struct p2p_channel)); 2447 if (p2p->cfg->pref_chan) { 2448 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2449 cfg->num_pref_chan * 2450 sizeof(struct p2p_channel)); 2451 } else 2452 p2p->cfg->num_pref_chan = 0; 2453 } 2454 2455#ifdef ANDROID_P2P 2456 /* 100ms listen time is too less to receive the response frames in some scenarios 2457 * increasing min listen time to 200ms. 2458 */ 2459 p2p->min_disc_int = 2; 2460 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2461 p2p->sd_dev_list = NULL; 2462#else 2463 p2p->min_disc_int = 1; 2464#endif 2465 p2p->max_disc_int = 3; 2466 p2p->max_disc_tu = -1; 2467 2468 os_get_random(&p2p->next_tie_breaker, 1); 2469 p2p->next_tie_breaker &= 0x01; 2470 if (cfg->sd_request) 2471 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2472 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2473 if (cfg->concurrent_operations) 2474 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2475 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2476 2477 dl_list_init(&p2p->devices); 2478 2479 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0, 2480 p2p_expiration_timeout, p2p, NULL); 2481 2482 p2p->go_timeout = 100; 2483 p2p->client_timeout = 20; 2484 2485 return p2p; 2486} 2487 2488 2489void p2p_deinit(struct p2p_data *p2p) 2490{ 2491#ifdef CONFIG_WIFI_DISPLAY 2492 wpabuf_free(p2p->wfd_ie_beacon); 2493 wpabuf_free(p2p->wfd_ie_probe_req); 2494 wpabuf_free(p2p->wfd_ie_probe_resp); 2495 wpabuf_free(p2p->wfd_ie_assoc_req); 2496 wpabuf_free(p2p->wfd_ie_invitation); 2497 wpabuf_free(p2p->wfd_ie_prov_disc_req); 2498 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 2499 wpabuf_free(p2p->wfd_ie_go_neg); 2500 wpabuf_free(p2p->wfd_dev_info); 2501 wpabuf_free(p2p->wfd_assoc_bssid); 2502 wpabuf_free(p2p->wfd_coupled_sink_info); 2503#endif /* CONFIG_WIFI_DISPLAY */ 2504 2505 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL); 2506 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 2507 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2508 p2p_flush(p2p); 2509 p2p_free_req_dev_types(p2p); 2510 os_free(p2p->cfg->dev_name); 2511 os_free(p2p->cfg->manufacturer); 2512 os_free(p2p->cfg->model_name); 2513 os_free(p2p->cfg->model_number); 2514 os_free(p2p->cfg->serial_number); 2515 os_free(p2p->cfg->pref_chan); 2516 os_free(p2p->groups); 2517 wpabuf_free(p2p->sd_resp); 2518 os_free(p2p->after_scan_tx); 2519 p2p_remove_wps_vendor_extensions(p2p); 2520 os_free(p2p); 2521} 2522 2523 2524void p2p_flush(struct p2p_data *p2p) 2525{ 2526 struct p2p_device *dev, *prev; 2527 p2p_stop_find(p2p); 2528 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 2529 list) { 2530 dl_list_del(&dev->list); 2531 p2p_device_free(p2p, dev); 2532 } 2533#ifdef ANDROID_P2P 2534 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */ 2535 p2p->sd_dev_list = NULL; 2536#endif 2537 p2p_free_sd_queries(p2p); 2538 os_free(p2p->after_scan_tx); 2539 p2p->after_scan_tx = NULL; 2540} 2541 2542 2543int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 2544{ 2545 struct p2p_device *dev; 2546 2547 dev = p2p_get_device(p2p, addr); 2548 if (dev == NULL) 2549 return -1; 2550 2551 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR, 2552 MAC2STR(addr)); 2553 2554 if (p2p->go_neg_peer == dev) 2555 p2p->go_neg_peer = NULL; 2556 2557 dev->wps_method = WPS_NOT_READY; 2558 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 2559 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 2560 2561 /* Check if after_scan_tx is for this peer. If so free it */ 2562 if (p2p->after_scan_tx && 2563 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 2564 os_free(p2p->after_scan_tx); 2565 p2p->after_scan_tx = NULL; 2566 } 2567 2568 return 0; 2569} 2570 2571 2572int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 2573{ 2574 os_free(p2p->cfg->dev_name); 2575 if (dev_name) { 2576 p2p->cfg->dev_name = os_strdup(dev_name); 2577 if (p2p->cfg->dev_name == NULL) 2578 return -1; 2579 } else 2580 p2p->cfg->dev_name = NULL; 2581 return 0; 2582} 2583 2584 2585int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 2586{ 2587 os_free(p2p->cfg->manufacturer); 2588 p2p->cfg->manufacturer = NULL; 2589 if (manufacturer) { 2590 p2p->cfg->manufacturer = os_strdup(manufacturer); 2591 if (p2p->cfg->manufacturer == NULL) 2592 return -1; 2593 } 2594 2595 return 0; 2596} 2597 2598 2599int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 2600{ 2601 os_free(p2p->cfg->model_name); 2602 p2p->cfg->model_name = NULL; 2603 if (model_name) { 2604 p2p->cfg->model_name = os_strdup(model_name); 2605 if (p2p->cfg->model_name == NULL) 2606 return -1; 2607 } 2608 2609 return 0; 2610} 2611 2612 2613int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 2614{ 2615 os_free(p2p->cfg->model_number); 2616 p2p->cfg->model_number = NULL; 2617 if (model_number) { 2618 p2p->cfg->model_number = os_strdup(model_number); 2619 if (p2p->cfg->model_number == NULL) 2620 return -1; 2621 } 2622 2623 return 0; 2624} 2625 2626 2627int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 2628{ 2629 os_free(p2p->cfg->serial_number); 2630 p2p->cfg->serial_number = NULL; 2631 if (serial_number) { 2632 p2p->cfg->serial_number = os_strdup(serial_number); 2633 if (p2p->cfg->serial_number == NULL) 2634 return -1; 2635 } 2636 2637 return 0; 2638} 2639 2640 2641void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 2642{ 2643 p2p->cfg->config_methods = config_methods; 2644} 2645 2646 2647void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 2648{ 2649 os_memcpy(p2p->cfg->uuid, uuid, 16); 2650} 2651 2652 2653int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 2654{ 2655 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 2656 return 0; 2657} 2658 2659 2660int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 2661 size_t num_dev_types) 2662{ 2663 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 2664 num_dev_types = P2P_SEC_DEVICE_TYPES; 2665 p2p->cfg->num_sec_dev_types = num_dev_types; 2666 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 2667 return 0; 2668} 2669 2670 2671void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 2672{ 2673 int i; 2674 2675 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2676 wpabuf_free(p2p->wps_vendor_ext[i]); 2677 p2p->wps_vendor_ext[i] = NULL; 2678 } 2679} 2680 2681 2682int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2683 const struct wpabuf *vendor_ext) 2684{ 2685 int i; 2686 2687 if (vendor_ext == NULL) 2688 return -1; 2689 2690 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 2691 if (p2p->wps_vendor_ext[i] == NULL) 2692 break; 2693 } 2694 if (i >= P2P_MAX_WPS_VENDOR_EXT) 2695 return -1; 2696 2697 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 2698 if (p2p->wps_vendor_ext[i] == NULL) 2699 return -1; 2700 2701 return 0; 2702} 2703 2704 2705int p2p_set_country(struct p2p_data *p2p, const char *country) 2706{ 2707 os_memcpy(p2p->cfg->country, country, 3); 2708 return 0; 2709} 2710 2711 2712void p2p_continue_find(struct p2p_data *p2p) 2713{ 2714 struct p2p_device *dev; 2715#ifdef ANDROID_P2P 2716 int skip=1; 2717#endif 2718 p2p_set_state(p2p, P2P_SEARCH); 2719 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2720#ifdef ANDROID_P2P 2721 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list 2722 * There may be a scenario, where a particular peer device have 2723 * not registered any query response. When we send a SD request to such device, 2724 * no response will be received. And if we continue to get probe responses from that device, 2725 * and if that device happens to be on top in our device list, 2726 * we will always continue to send SD requests always to that peer only. 2727 * We will not be able to send SD requests to other devices in that case. 2728 * This implementation keeps track of last serviced peer device. 2729 * And then takes the next one from the device list, in the next iteration. 2730 */ 2731 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) { 2732 if(skip) { 2733 if ((&dev->list == p2p->sd_dev_list) ) { 2734 skip = 0; 2735 if (dev->list.next == &p2p->devices) 2736 p2p->sd_dev_list = NULL; 2737 } 2738 continue; 2739 } 2740 } 2741 p2p->sd_dev_list = &dev->list; 2742 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR, 2743 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE", 2744 MAC2STR(dev->info.p2p_device_addr)); 2745#endif 2746 if (dev->flags & P2P_DEV_SD_SCHEDULE) { 2747 if (p2p_start_sd(p2p, dev) == 0) 2748 return; 2749 else 2750 break; 2751 } else if (dev->req_config_methods && 2752 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 2753 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2754 "pending Provision Discovery Request to " 2755 MACSTR " (config methods 0x%x)", 2756 MAC2STR(dev->info.p2p_device_addr), 2757 dev->req_config_methods); 2758 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 2759 return; 2760 } 2761 } 2762 2763 p2p_listen_in_find(p2p, 1); 2764} 2765 2766 2767static void p2p_sd_cb(struct p2p_data *p2p, int success) 2768{ 2769 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2770 "P2P: Service Discovery Query TX callback: success=%d", 2771 success); 2772 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2773 2774 if (!success) { 2775 if (p2p->sd_peer) { 2776 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 2777 p2p->sd_peer = NULL; 2778 } 2779 p2p_continue_find(p2p); 2780 return; 2781 } 2782 2783 if (p2p->sd_peer == NULL) { 2784 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2785 "P2P: No SD peer entry known"); 2786 p2p_continue_find(p2p); 2787 return; 2788 } 2789 2790 /* Wait for response from the peer */ 2791 p2p_set_state(p2p, P2P_SD_DURING_FIND); 2792 p2p_set_timeout(p2p, 0, 200000); 2793} 2794 2795 2796/** 2797 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 2798 * @p2p: P2P module context from p2p_init() 2799 */ 2800static void p2p_retry_pd(struct p2p_data *p2p) 2801{ 2802 struct p2p_device *dev; 2803 2804 if (p2p->state != P2P_IDLE) 2805 return; 2806 2807 /* 2808 * Retry the prov disc req attempt only for the peer that the user had 2809 * requested. 2810 */ 2811 2812 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 2813 if (os_memcmp(p2p->pending_pd_devaddr, 2814 dev->info.p2p_device_addr, ETH_ALEN) != 0) 2815 continue; 2816 if (!dev->req_config_methods) 2817 continue; 2818 2819 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send " 2820 "pending Provision Discovery Request to " 2821 MACSTR " (config methods 0x%x)", 2822 MAC2STR(dev->info.p2p_device_addr), 2823 dev->req_config_methods); 2824 p2p_send_prov_disc_req(p2p, dev, 2825 dev->flags & P2P_DEV_PD_FOR_JOIN, 0); 2826 return; 2827 } 2828} 2829 2830 2831static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 2832{ 2833 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2834 "P2P: Provision Discovery Request TX callback: success=%d", 2835 success); 2836 2837 /* 2838 * Postpone resetting the pending action state till after we actually 2839 * time out. This allows us to take some action like notifying any 2840 * interested parties about no response to the request. 2841 * 2842 * When the timer (below) goes off we check in IDLE, SEARCH, or 2843 * LISTEN_ONLY state, which are the only allowed states to issue a PD 2844 * requests in, if this was still pending and then raise notification. 2845 */ 2846 2847 if (!success) { 2848 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2849 2850 if (p2p->user_initiated_pd && 2851 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 2852 { 2853 /* Retry request from timeout to avoid busy loops */ 2854 p2p->pending_action_state = P2P_PENDING_PD; 2855 p2p_set_timeout(p2p, 0, 50000); 2856 } else if (p2p->state != P2P_IDLE) 2857 p2p_continue_find(p2p); 2858 else if (p2p->user_initiated_pd) { 2859 p2p->pending_action_state = P2P_PENDING_PD; 2860#ifdef ANDROID_P2P 2861 p2p_set_timeout(p2p, 0, 350000); 2862#else 2863 p2p_set_timeout(p2p, 0, 300000); 2864#endif 2865 } 2866 return; 2867 } 2868 2869 /* 2870 * This postponing, of resetting pending_action_state, needs to be 2871 * done only for user initiated PD requests and not internal ones. 2872 */ 2873 if (p2p->user_initiated_pd) 2874 p2p->pending_action_state = P2P_PENDING_PD; 2875 else 2876 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 2877 2878 /* Wait for response from the peer */ 2879 if (p2p->state == P2P_SEARCH) 2880 p2p_set_state(p2p, P2P_PD_DURING_FIND); 2881#ifdef ANDROID_P2P 2882 p2p_set_timeout(p2p, 0, 350000); 2883#else 2884 p2p_set_timeout(p2p, 0, 200000); 2885#endif 2886} 2887 2888 2889int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 2890 unsigned int age, int level, const u8 *ies, 2891 size_t ies_len) 2892{ 2893 p2p_add_device(p2p, bssid, freq, age, level, ies, ies_len, 1); 2894 2895 return 0; 2896} 2897 2898 2899void p2p_scan_res_handled(struct p2p_data *p2p) 2900{ 2901 if (!p2p->p2p_scan_running) { 2902 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not " 2903 "running, but scan results received"); 2904 } 2905 p2p->p2p_scan_running = 0; 2906 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 2907 2908 if (p2p_run_after_scan(p2p)) 2909 return; 2910 if (p2p->state == P2P_SEARCH) 2911 p2p_continue_find(p2p); 2912} 2913 2914 2915void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id) 2916{ 2917 u8 *len; 2918 2919#ifdef CONFIG_WIFI_DISPLAY 2920 if (p2p->wfd_ie_probe_req) 2921 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 2922#endif /* CONFIG_WIFI_DISPLAY */ 2923 2924 len = p2p_buf_add_ie_hdr(ies); 2925 p2p_buf_add_capability(ies, p2p->dev_capab & 2926 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2927 if (dev_id) 2928 p2p_buf_add_device_id(ies, dev_id); 2929 if (p2p->cfg->reg_class && p2p->cfg->channel) 2930 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 2931 p2p->cfg->reg_class, 2932 p2p->cfg->channel); 2933 if (p2p->ext_listen_interval) 2934 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 2935 p2p->ext_listen_interval); 2936 /* TODO: p2p_buf_add_operating_channel() if GO */ 2937 p2p_buf_update_ie_hdr(ies, len); 2938} 2939 2940 2941size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 2942{ 2943 size_t len = 100; 2944 2945#ifdef CONFIG_WIFI_DISPLAY 2946 if (p2p && p2p->wfd_ie_probe_req) 2947 len += wpabuf_len(p2p->wfd_ie_probe_req); 2948#endif /* CONFIG_WIFI_DISPLAY */ 2949 2950 return len; 2951} 2952 2953 2954int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 2955{ 2956 return p2p_attr_text(p2p_ie, buf, end); 2957} 2958 2959 2960static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 2961{ 2962 struct p2p_device *dev = p2p->go_neg_peer; 2963 2964 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2965 "P2P: GO Negotiation Request TX callback: success=%d", 2966 success); 2967 2968 if (dev == NULL) { 2969 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2970 "P2P: No pending GO Negotiation"); 2971 return; 2972 } 2973 2974 if (success) { 2975 if (dev->flags & P2P_DEV_USER_REJECTED) { 2976 p2p_set_state(p2p, P2P_IDLE); 2977 return; 2978 } 2979 } else if (dev->go_neg_req_sent) { 2980 /* Cancel the increment from p2p_connect_send() on failure */ 2981 dev->go_neg_req_sent--; 2982 } 2983 2984 if (!success && 2985 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 2986 !is_zero_ether_addr(dev->member_in_go_dev)) { 2987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2988 "P2P: Peer " MACSTR " did not acknowledge request - " 2989 "try to use device discoverability through its GO", 2990 MAC2STR(dev->info.p2p_device_addr)); 2991 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 2992 p2p_send_dev_disc_req(p2p, dev); 2993 return; 2994 } 2995 2996 /* 2997 * Use P2P find, if needed, to find the other device from its listen 2998 * channel. 2999 */ 3000 p2p_set_state(p2p, P2P_CONNECT); 3001#ifdef ANDROID_P2P 3002 p2p_set_timeout(p2p, 0, 350000); 3003#else 3004 p2p_set_timeout(p2p, 0, success ? 200000 : 100000); 3005#endif 3006} 3007 3008 3009static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 3010{ 3011 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3012 "P2P: GO Negotiation Response TX callback: success=%d", 3013 success); 3014 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 3015 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3016 "P2P: Ignore TX callback event - GO Negotiation is " 3017 "not running anymore"); 3018 return; 3019 } 3020 p2p_set_state(p2p, P2P_CONNECT); 3021#ifdef ANDROID_P2P 3022 p2p_set_timeout(p2p, 0, 350000); 3023#else 3024 p2p_set_timeout(p2p, 0, 250000); 3025#endif 3026} 3027 3028 3029static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success) 3030{ 3031 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3032 "P2P: GO Negotiation Response (failure) TX callback: " 3033 "success=%d", success); 3034 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 3035 p2p_go_neg_failed(p2p, p2p->go_neg_peer, 3036 p2p->go_neg_peer->status); 3037 } 3038} 3039 3040 3041static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3042 enum p2p_send_action_result result) 3043{ 3044 struct p2p_device *dev; 3045 3046 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3047 "P2P: GO Negotiation Confirm TX callback: result=%d", 3048 result); 3049 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3050 if (result == P2P_SEND_ACTION_FAILED) { 3051 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3052 return; 3053 } 3054 if (result == P2P_SEND_ACTION_NO_ACK) { 3055 /* 3056 * It looks like the TX status for GO Negotiation Confirm is 3057 * often showing failure even when the peer has actually 3058 * received the frame. Since the peer may change channels 3059 * immediately after having received the frame, we may not see 3060 * an Ack for retries, so just dropping a single frame may 3061 * trigger this. To allow the group formation to succeed if the 3062 * peer did indeed receive the frame, continue regardless of 3063 * the TX status. 3064 */ 3065 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3066 "P2P: Assume GO Negotiation Confirm TX was actually " 3067 "received by the peer even though Ack was not " 3068 "reported"); 3069 } 3070 3071 dev = p2p->go_neg_peer; 3072 if (dev == NULL) 3073 return; 3074 3075 p2p_go_complete(p2p, dev); 3076} 3077 3078 3079void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3080 const u8 *src, const u8 *bssid, 3081 enum p2p_send_action_result result) 3082{ 3083 enum p2p_pending_action_state state; 3084 int success; 3085 3086 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3087 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR 3088 " src=" MACSTR " bssid=" MACSTR " result=%d", 3089 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3090 MAC2STR(bssid), result); 3091 success = result == P2P_SEND_ACTION_SUCCESS; 3092 state = p2p->pending_action_state; 3093 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3094 switch (state) { 3095 case P2P_NO_PENDING_ACTION: 3096 break; 3097 case P2P_PENDING_GO_NEG_REQUEST: 3098 p2p_go_neg_req_cb(p2p, success); 3099 break; 3100 case P2P_PENDING_GO_NEG_RESPONSE: 3101 p2p_go_neg_resp_cb(p2p, success); 3102 break; 3103 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3104 p2p_go_neg_resp_failure_cb(p2p, success); 3105 break; 3106 case P2P_PENDING_GO_NEG_CONFIRM: 3107 p2p_go_neg_conf_cb(p2p, result); 3108 break; 3109 case P2P_PENDING_SD: 3110 p2p_sd_cb(p2p, success); 3111 break; 3112 case P2P_PENDING_PD: 3113 p2p_prov_disc_cb(p2p, success); 3114 break; 3115 case P2P_PENDING_INVITATION_REQUEST: 3116 p2p_invitation_req_cb(p2p, success); 3117 break; 3118 case P2P_PENDING_INVITATION_RESPONSE: 3119 p2p_invitation_resp_cb(p2p, success); 3120 break; 3121 case P2P_PENDING_DEV_DISC_REQUEST: 3122 p2p_dev_disc_req_cb(p2p, success); 3123 break; 3124 case P2P_PENDING_DEV_DISC_RESPONSE: 3125 p2p_dev_disc_resp_cb(p2p, success); 3126 break; 3127 case P2P_PENDING_GO_DISC_REQ: 3128 p2p_go_disc_req_cb(p2p, success); 3129 break; 3130 } 3131} 3132 3133 3134void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3135 unsigned int duration) 3136{ 3137 if (freq == p2p->pending_client_disc_freq) { 3138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3139 "P2P: Client discoverability remain-awake completed"); 3140 p2p->pending_client_disc_freq = 0; 3141 return; 3142 } 3143 3144 if (freq != p2p->pending_listen_freq) { 3145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3146 "P2P: Unexpected listen callback for freq=%u " 3147 "duration=%u (pending_listen_freq=%u)", 3148 freq, duration, p2p->pending_listen_freq); 3149 return; 3150 } 3151 3152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3153 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on " 3154 "callback", 3155 p2p->pending_listen_sec, p2p->pending_listen_usec, 3156 p2p->pending_listen_freq); 3157 p2p->in_listen = 1; 3158 p2p->drv_in_listen = freq; 3159 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3160 /* 3161 * Add 20 msec extra wait to avoid race condition with driver 3162 * remain-on-channel end event, i.e., give driver more time to 3163 * complete the operation before our timeout expires. 3164 */ 3165 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3166 p2p->pending_listen_usec + 20000); 3167 } 3168 3169 p2p->pending_listen_freq = 0; 3170} 3171 3172 3173int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3174{ 3175 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen " 3176 "state (freq=%u)", freq); 3177 p2p->drv_in_listen = 0; 3178 if (p2p->in_listen) 3179 return 0; /* Internal timeout will trigger the next step */ 3180 3181 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3182 if (p2p->go_neg_peer->connect_reqs >= 120) { 3183 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3184 "P2P: Timeout on sending GO Negotiation " 3185 "Request without getting response"); 3186 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3187 return 0; 3188 } 3189 3190 p2p_set_state(p2p, P2P_CONNECT); 3191 p2p_connect_send(p2p, p2p->go_neg_peer); 3192 return 1; 3193 } else if (p2p->state == P2P_SEARCH) { 3194 if (p2p->p2p_scan_running) { 3195 /* 3196 * Search is already in progress. This can happen if 3197 * an Action frame RX is reported immediately after 3198 * the end of a remain-on-channel operation and the 3199 * response frame to that is sent using an offchannel 3200 * operation while in p2p_find. Avoid an attempt to 3201 * restart a scan here. 3202 */ 3203 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan " 3204 "already in progress - do not try to start a " 3205 "new one"); 3206 return 1; 3207 } 3208 if (p2p->pending_listen_freq) { 3209 /* 3210 * Better wait a bit if the driver is unable to start 3211 * offchannel operation for some reason. p2p_search() 3212 * will be started from internal timeout. 3213 */ 3214 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen " 3215 "operation did not seem to start - delay " 3216 "search phase to avoid busy loop"); 3217 p2p_set_timeout(p2p, 0, 100000); 3218 return 1; 3219 } 3220 if (p2p->search_delay) { 3221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3222 "search operation by %u ms", 3223 p2p->search_delay); 3224 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3225 (p2p->search_delay % 1000) * 1000); 3226 return 1; 3227 } 3228 p2p_search(p2p); 3229 return 1; 3230 } 3231 3232 return 0; 3233} 3234 3235 3236static void p2p_timeout_connect(struct p2p_data *p2p) 3237{ 3238 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3239 if (p2p->go_neg_peer && 3240 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3241 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO " 3242 "Negotiation Confirm timed out - assume GO " 3243 "Negotiation failed"); 3244 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3245 return; 3246 } 3247 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3248 p2p_listen_in_find(p2p, 0); 3249} 3250 3251 3252static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3253{ 3254 if (p2p->go_neg_peer) { 3255 if (p2p->drv_in_listen) { 3256 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is " 3257 "still in Listen state; wait for it to " 3258 "complete"); 3259 return; 3260 } 3261 3262 if (p2p->go_neg_peer->connect_reqs >= 120) { 3263 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3264 "P2P: Timeout on sending GO Negotiation " 3265 "Request without getting response"); 3266 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1); 3267 return; 3268 } 3269 3270 p2p_set_state(p2p, P2P_CONNECT); 3271 p2p_connect_send(p2p, p2p->go_neg_peer); 3272 } else 3273 p2p_set_state(p2p, P2P_IDLE); 3274} 3275 3276 3277static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 3278{ 3279 /* 3280 * TODO: could remain constantly in Listen state for some time if there 3281 * are no other concurrent uses for the radio. For now, go to listen 3282 * state once per second to give other uses a chance to use the radio. 3283 */ 3284 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 3285 p2p_set_timeout(p2p, 0, 500000); 3286} 3287 3288 3289static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 3290{ 3291 struct p2p_device *dev = p2p->go_neg_peer; 3292 3293 if (dev == NULL) { 3294 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3295 "P2P: Unknown GO Neg peer - stop GO Neg wait"); 3296 return; 3297 } 3298 3299 dev->wait_count++; 3300 if (dev->wait_count >= 120) { 3301 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3302 "P2P: Timeout on waiting peer to become ready for GO " 3303 "Negotiation"); 3304 p2p_go_neg_failed(p2p, dev, -1); 3305 return; 3306 } 3307 3308 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3309 "P2P: Go to Listen state while waiting for the peer to become " 3310 "ready for GO Negotiation"); 3311 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 3312 p2p_listen_in_find(p2p, 0); 3313} 3314 3315 3316static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 3317{ 3318 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3319 "P2P: Service Discovery Query timeout"); 3320 if (p2p->sd_peer) { 3321 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3322 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE; 3323 p2p->sd_peer = NULL; 3324 } 3325 p2p_continue_find(p2p); 3326} 3327 3328 3329static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 3330{ 3331 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3332 "P2P: Provision Discovery Request timeout"); 3333 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3334 p2p_continue_find(p2p); 3335} 3336 3337 3338static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 3339{ 3340 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3341 3342 /* 3343 * For user initiated PD requests that we have not gotten any responses 3344 * for while in IDLE state, we retry them a couple of times before 3345 * giving up. 3346 */ 3347 if (!p2p->user_initiated_pd) 3348 return; 3349 3350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3351 "P2P: User initiated Provision Discovery Request timeout"); 3352 3353 if (p2p->pd_retries) { 3354 p2p->pd_retries--; 3355 p2p_retry_pd(p2p); 3356 } else { 3357 struct p2p_device *dev; 3358 int for_join = 0; 3359 3360 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3361 if (os_memcmp(p2p->pending_pd_devaddr, 3362 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3363 continue; 3364 if (dev->req_config_methods && 3365 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 3366 for_join = 1; 3367 } 3368 3369 if (p2p->cfg->prov_disc_fail) 3370 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 3371 p2p->pending_pd_devaddr, 3372 for_join ? 3373 P2P_PROV_DISC_TIMEOUT_JOIN : 3374 P2P_PROV_DISC_TIMEOUT); 3375 p2p_reset_pending_pd(p2p); 3376 } 3377} 3378 3379 3380static void p2p_timeout_invite(struct p2p_data *p2p) 3381{ 3382 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3383 p2p_set_state(p2p, P2P_INVITE_LISTEN); 3384 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 3385 /* 3386 * Better remain on operating channel instead of listen channel 3387 * when running a group. 3388 */ 3389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in " 3390 "active GO role - wait on operating channel"); 3391 p2p_set_timeout(p2p, 0, 100000); 3392 return; 3393 } 3394 p2p_listen_in_find(p2p, 0); 3395} 3396 3397 3398static void p2p_timeout_invite_listen(struct p2p_data *p2p) 3399{ 3400 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 3401 p2p_set_state(p2p, P2P_INVITE); 3402 p2p_invite_send(p2p, p2p->invite_peer, 3403 p2p->invite_go_dev_addr); 3404 } else { 3405 if (p2p->invite_peer) { 3406 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3407 "P2P: Invitation Request retry limit reached"); 3408 if (p2p->cfg->invitation_result) 3409 p2p->cfg->invitation_result( 3410 p2p->cfg->cb_ctx, -1, NULL); 3411 } 3412 p2p_set_state(p2p, P2P_IDLE); 3413 } 3414} 3415 3416 3417static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 3418{ 3419 struct p2p_data *p2p = eloop_ctx; 3420 3421 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)", 3422 p2p_state_txt(p2p->state)); 3423 3424 p2p->in_listen = 0; 3425 3426 switch (p2p->state) { 3427 case P2P_IDLE: 3428 /* Check if we timed out waiting for PD req */ 3429 if (p2p->pending_action_state == P2P_PENDING_PD) 3430 p2p_timeout_prov_disc_req(p2p); 3431 break; 3432 case P2P_SEARCH: 3433 /* Check if we timed out waiting for PD req */ 3434 if (p2p->pending_action_state == P2P_PENDING_PD) 3435 p2p_timeout_prov_disc_req(p2p); 3436 if (p2p->search_delay && !p2p->in_search_delay) { 3437 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay " 3438 "search operation by %u ms", 3439 p2p->search_delay); 3440 p2p->in_search_delay = 1; 3441 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3442 (p2p->search_delay % 1000) * 1000); 3443 break; 3444 } 3445 p2p->in_search_delay = 0; 3446 p2p_search(p2p); 3447 break; 3448 case P2P_CONNECT: 3449 p2p_timeout_connect(p2p); 3450 break; 3451 case P2P_CONNECT_LISTEN: 3452 p2p_timeout_connect_listen(p2p); 3453 break; 3454 case P2P_GO_NEG: 3455 break; 3456 case P2P_LISTEN_ONLY: 3457 /* Check if we timed out waiting for PD req */ 3458 if (p2p->pending_action_state == P2P_PENDING_PD) 3459 p2p_timeout_prov_disc_req(p2p); 3460 3461 if (p2p->ext_listen_only) { 3462 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3463 "P2P: Extended Listen Timing - Listen State " 3464 "completed"); 3465 p2p->ext_listen_only = 0; 3466 p2p_set_state(p2p, P2P_IDLE); 3467 } 3468 break; 3469 case P2P_WAIT_PEER_CONNECT: 3470 p2p_timeout_wait_peer_connect(p2p); 3471 break; 3472 case P2P_WAIT_PEER_IDLE: 3473 p2p_timeout_wait_peer_idle(p2p); 3474 break; 3475 case P2P_SD_DURING_FIND: 3476 p2p_timeout_sd_during_find(p2p); 3477 break; 3478 case P2P_PROVISIONING: 3479 break; 3480 case P2P_PD_DURING_FIND: 3481 p2p_timeout_prov_disc_during_find(p2p); 3482 break; 3483 case P2P_INVITE: 3484 p2p_timeout_invite(p2p); 3485 break; 3486 case P2P_INVITE_LISTEN: 3487 p2p_timeout_invite_listen(p2p); 3488 break; 3489 case P2P_SEARCH_WHEN_READY: 3490 break; 3491 case P2P_CONTINUE_SEARCH_WHEN_READY: 3492 break; 3493 } 3494} 3495 3496 3497int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 3498{ 3499 struct p2p_device *dev; 3500 3501 dev = p2p_get_device(p2p, peer_addr); 3502 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject " 3503 "connection attempts by peer " MACSTR, MAC2STR(peer_addr)); 3504 if (dev == NULL) { 3505 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR 3506 " unknown", MAC2STR(peer_addr)); 3507 return -1; 3508 } 3509 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 3510 dev->flags |= P2P_DEV_USER_REJECTED; 3511 return 0; 3512} 3513 3514 3515const char * p2p_wps_method_text(enum p2p_wps_method method) 3516{ 3517 switch (method) { 3518 case WPS_NOT_READY: 3519 return "not-ready"; 3520 case WPS_PIN_DISPLAY: 3521 return "Display"; 3522 case WPS_PIN_KEYPAD: 3523 return "Keypad"; 3524 case WPS_PBC: 3525 return "PBC"; 3526 } 3527 3528 return "??"; 3529} 3530 3531 3532static const char * p2p_go_state_text(enum p2p_go_state go_state) 3533{ 3534 switch (go_state) { 3535 case UNKNOWN_GO: 3536 return "unknown"; 3537 case LOCAL_GO: 3538 return "local"; 3539 case REMOTE_GO: 3540 return "remote"; 3541 } 3542 3543 return "??"; 3544} 3545 3546 3547const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 3548 const u8 *addr, int next) 3549{ 3550 struct p2p_device *dev; 3551 3552 if (addr) 3553 dev = p2p_get_device(p2p, addr); 3554 else 3555 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 3556 3557 if (dev && next) { 3558 dev = dl_list_first(&dev->list, struct p2p_device, list); 3559 if (&dev->list == &p2p->devices) 3560 dev = NULL; 3561 } 3562 3563 if (dev == NULL) 3564 return NULL; 3565 3566 return &dev->info; 3567} 3568 3569 3570int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 3571 char *buf, size_t buflen) 3572{ 3573 struct p2p_device *dev; 3574 int res; 3575 char *pos, *end; 3576 struct os_time now; 3577 3578 if (info == NULL) 3579 return -1; 3580 3581 dev = (struct p2p_device *) (((u8 *) info) - 3582 offsetof(struct p2p_device, info)); 3583 3584 pos = buf; 3585 end = buf + buflen; 3586 3587 os_get_time(&now); 3588 res = os_snprintf(pos, end - pos, 3589 "age=%d\n" 3590 "listen_freq=%d\n" 3591 "wps_method=%s\n" 3592 "interface_addr=" MACSTR "\n" 3593 "member_in_go_dev=" MACSTR "\n" 3594 "member_in_go_iface=" MACSTR "\n" 3595 "go_neg_req_sent=%d\n" 3596 "go_state=%s\n" 3597 "dialog_token=%u\n" 3598 "intended_addr=" MACSTR "\n" 3599 "country=%c%c\n" 3600 "oper_freq=%d\n" 3601 "req_config_methods=0x%x\n" 3602 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 3603 "status=%d\n" 3604 "wait_count=%u\n" 3605 "invitation_reqs=%u\n", 3606 (int) (now.sec - dev->last_seen.sec), 3607 dev->listen_freq, 3608 p2p_wps_method_text(dev->wps_method), 3609 MAC2STR(dev->interface_addr), 3610 MAC2STR(dev->member_in_go_dev), 3611 MAC2STR(dev->member_in_go_iface), 3612 dev->go_neg_req_sent, 3613 p2p_go_state_text(dev->go_state), 3614 dev->dialog_token, 3615 MAC2STR(dev->intended_addr), 3616 dev->country[0] ? dev->country[0] : '_', 3617 dev->country[1] ? dev->country[1] : '_', 3618 dev->oper_freq, 3619 dev->req_config_methods, 3620 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 3621 "[PROBE_REQ_ONLY]" : "", 3622 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 3623 dev->flags & P2P_DEV_NOT_YET_READY ? 3624 "[NOT_YET_READY]" : "", 3625 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "", 3626 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" : 3627 "", 3628 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 3629 "[PD_PEER_DISPLAY]" : "", 3630 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 3631 "[PD_PEER_KEYPAD]" : "", 3632 dev->flags & P2P_DEV_USER_REJECTED ? 3633 "[USER_REJECTED]" : "", 3634 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 3635 "[PEER_WAITING_RESPONSE]" : "", 3636 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 3637 "[PREFER_PERSISTENT_GROUP]" : "", 3638 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 3639 "[WAIT_GO_NEG_RESPONSE]" : "", 3640 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 3641 "[WAIT_GO_NEG_CONFIRM]" : "", 3642 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 3643 "[GROUP_CLIENT_ONLY]" : "", 3644 dev->flags & P2P_DEV_FORCE_FREQ ? 3645 "[FORCE_FREQ]" : "", 3646 dev->flags & P2P_DEV_PD_FOR_JOIN ? 3647 "[PD_FOR_JOIN]" : "", 3648 dev->status, 3649 dev->wait_count, 3650 dev->invitation_reqs); 3651 if (res < 0 || res >= end - pos) 3652 return pos - buf; 3653 pos += res; 3654 3655 if (dev->ext_listen_period) { 3656 res = os_snprintf(pos, end - pos, 3657 "ext_listen_period=%u\n" 3658 "ext_listen_interval=%u\n", 3659 dev->ext_listen_period, 3660 dev->ext_listen_interval); 3661 if (res < 0 || res >= end - pos) 3662 return pos - buf; 3663 pos += res; 3664 } 3665 3666 if (dev->oper_ssid_len) { 3667 res = os_snprintf(pos, end - pos, 3668 "oper_ssid=%s\n", 3669 wpa_ssid_txt(dev->oper_ssid, 3670 dev->oper_ssid_len)); 3671 if (res < 0 || res >= end - pos) 3672 return pos - buf; 3673 pos += res; 3674 } 3675 3676#ifdef CONFIG_WIFI_DISPLAY 3677 if (dev->info.wfd_subelems) { 3678 res = os_snprintf(pos, end - pos, "wfd_subelems="); 3679 if (res < 0 || res >= end - pos) 3680 return pos - buf; 3681 pos += res; 3682 3683 pos += wpa_snprintf_hex(pos, end - pos, 3684 wpabuf_head(dev->info.wfd_subelems), 3685 wpabuf_len(dev->info.wfd_subelems)); 3686 3687 res = os_snprintf(pos, end - pos, "\n"); 3688 if (res < 0 || res >= end - pos) 3689 return pos - buf; 3690 pos += res; 3691 } 3692#endif /* CONFIG_WIFI_DISPLAY */ 3693 3694 return pos - buf; 3695} 3696 3697 3698int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 3699{ 3700 return p2p_get_device(p2p, addr) != NULL; 3701} 3702 3703 3704void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 3705{ 3706 if (enabled) { 3707 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3708 "discoverability enabled"); 3709 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3710 } else { 3711 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client " 3712 "discoverability disabled"); 3713 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3714 } 3715} 3716 3717 3718static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 3719 u32 duration2, u32 interval2) 3720{ 3721 struct wpabuf *req; 3722 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 3723 u8 *len; 3724 3725 req = wpabuf_alloc(100); 3726 if (req == NULL) 3727 return NULL; 3728 3729 if (duration1 || interval1) { 3730 os_memset(&desc1, 0, sizeof(desc1)); 3731 desc1.count_type = 1; 3732 desc1.duration = duration1; 3733 desc1.interval = interval1; 3734 ptr1 = &desc1; 3735 3736 if (duration2 || interval2) { 3737 os_memset(&desc2, 0, sizeof(desc2)); 3738 desc2.count_type = 2; 3739 desc2.duration = duration2; 3740 desc2.interval = interval2; 3741 ptr2 = &desc2; 3742 } 3743 } 3744 3745 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 3746 len = p2p_buf_add_ie_hdr(req); 3747 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 3748 p2p_buf_update_ie_hdr(req, len); 3749 3750 return req; 3751} 3752 3753 3754int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 3755 const u8 *own_interface_addr, unsigned int freq, 3756 u32 duration1, u32 interval1, u32 duration2, 3757 u32 interval2) 3758{ 3759 struct wpabuf *req; 3760 3761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to " 3762 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u " 3763 "int1=%u dur2=%u int2=%u", 3764 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 3765 freq, duration1, interval1, duration2, interval2); 3766 3767 req = p2p_build_presence_req(duration1, interval1, duration2, 3768 interval2); 3769 if (req == NULL) 3770 return -1; 3771 3772 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3773 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 3774 go_interface_addr, 3775 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 3776 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3777 "P2P: Failed to send Action frame"); 3778 } 3779 wpabuf_free(req); 3780 3781 return 0; 3782} 3783 3784 3785static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 3786 size_t noa_len, u8 dialog_token) 3787{ 3788 struct wpabuf *resp; 3789 u8 *len; 3790 3791 resp = wpabuf_alloc(100 + noa_len); 3792 if (resp == NULL) 3793 return NULL; 3794 3795 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 3796 len = p2p_buf_add_ie_hdr(resp); 3797 p2p_buf_add_status(resp, status); 3798 if (noa) { 3799 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 3800 wpabuf_put_le16(resp, noa_len); 3801 wpabuf_put_data(resp, noa, noa_len); 3802 } else 3803 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 3804 p2p_buf_update_ie_hdr(resp, len); 3805 3806 return resp; 3807} 3808 3809 3810static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 3811 const u8 *sa, const u8 *data, size_t len, 3812 int rx_freq) 3813{ 3814 struct p2p_message msg; 3815 u8 status; 3816 struct wpabuf *resp; 3817 size_t g; 3818 struct p2p_group *group = NULL; 3819 int parsed = 0; 3820 u8 noa[50]; 3821 int noa_len; 3822 3823 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3824 "P2P: Received P2P Action - P2P Presence Request"); 3825 3826 for (g = 0; g < p2p->num_groups; g++) { 3827 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 3828 ETH_ALEN) == 0) { 3829 group = p2p->groups[g]; 3830 break; 3831 } 3832 } 3833 if (group == NULL) { 3834 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3835 "P2P: Ignore P2P Presence Request for unknown group " 3836 MACSTR, MAC2STR(da)); 3837 return; 3838 } 3839 3840 if (p2p_parse(data, len, &msg) < 0) { 3841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3842 "P2P: Failed to parse P2P Presence Request"); 3843 status = P2P_SC_FAIL_INVALID_PARAMS; 3844 goto fail; 3845 } 3846 parsed = 1; 3847 3848 if (msg.noa == NULL) { 3849 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3850 "P2P: No NoA attribute in P2P Presence Request"); 3851 status = P2P_SC_FAIL_INVALID_PARAMS; 3852 goto fail; 3853 } 3854 3855 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 3856 3857fail: 3858 if (p2p->cfg->get_noa) 3859 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 3860 sizeof(noa)); 3861 else 3862 noa_len = -1; 3863 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 3864 noa_len > 0 ? noa_len : 0, 3865 msg.dialog_token); 3866 if (parsed) 3867 p2p_parse_free(&msg); 3868 if (resp == NULL) 3869 return; 3870 3871 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3872 if (p2p_send_action(p2p, rx_freq, sa, da, da, 3873 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 3874 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3875 "P2P: Failed to send Action frame"); 3876 } 3877 wpabuf_free(resp); 3878} 3879 3880 3881static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 3882 const u8 *sa, const u8 *data, size_t len) 3883{ 3884 struct p2p_message msg; 3885 3886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3887 "P2P: Received P2P Action - P2P Presence Response"); 3888 3889 if (p2p_parse(data, len, &msg) < 0) { 3890 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3891 "P2P: Failed to parse P2P Presence Response"); 3892 return; 3893 } 3894 3895 if (msg.status == NULL || msg.noa == NULL) { 3896 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3897 "P2P: No Status or NoA attribute in P2P Presence " 3898 "Response"); 3899 p2p_parse_free(&msg); 3900 return; 3901 } 3902 3903 if (*msg.status) { 3904 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3905 "P2P: P2P Presence Request was rejected: status %u", 3906 *msg.status); 3907 p2p_parse_free(&msg); 3908 return; 3909 } 3910 3911 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3912 "P2P: P2P Presence Request was accepted"); 3913 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 3914 msg.noa, msg.noa_len); 3915 /* TODO: process NoA */ 3916 p2p_parse_free(&msg); 3917} 3918 3919 3920static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3921{ 3922 struct p2p_data *p2p = eloop_ctx; 3923 3924 if (p2p->ext_listen_interval) { 3925 /* Schedule next extended listen timeout */ 3926 eloop_register_timeout(p2p->ext_listen_interval_sec, 3927 p2p->ext_listen_interval_usec, 3928 p2p_ext_listen_timeout, p2p, NULL); 3929 } 3930 3931 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 3932 /* 3933 * This should not really happen, but it looks like the Listen 3934 * command may fail is something else (e.g., a scan) was 3935 * running at an inconvenient time. As a workaround, allow new 3936 * Extended Listen operation to be started. 3937 */ 3938 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous " 3939 "Extended Listen operation had not been completed - " 3940 "try again"); 3941 p2p->ext_listen_only = 0; 3942 p2p_set_state(p2p, P2P_IDLE); 3943 } 3944 3945 if (p2p->state != P2P_IDLE) { 3946 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended " 3947 "Listen timeout in active state (%s)", 3948 p2p_state_txt(p2p->state)); 3949 return; 3950 } 3951 3952 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout"); 3953 p2p->ext_listen_only = 1; 3954 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 3955 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start " 3956 "Listen state for Extended Listen Timing"); 3957 p2p->ext_listen_only = 0; 3958 } 3959} 3960 3961 3962int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 3963 unsigned int interval) 3964{ 3965 if (period > 65535 || interval > 65535 || period > interval || 3966 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 3967 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3968 "P2P: Invalid Extended Listen Timing request: " 3969 "period=%u interval=%u", period, interval); 3970 return -1; 3971 } 3972 3973 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 3974 3975 if (interval == 0) { 3976 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3977 "P2P: Disabling Extended Listen Timing"); 3978 p2p->ext_listen_period = 0; 3979 p2p->ext_listen_interval = 0; 3980 return 0; 3981 } 3982 3983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3984 "P2P: Enabling Extended Listen Timing: period %u msec, " 3985 "interval %u msec", period, interval); 3986 p2p->ext_listen_period = period; 3987 p2p->ext_listen_interval = interval; 3988 p2p->ext_listen_interval_sec = interval / 1000; 3989 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 3990 3991 eloop_register_timeout(p2p->ext_listen_interval_sec, 3992 p2p->ext_listen_interval_usec, 3993 p2p_ext_listen_timeout, p2p, NULL); 3994 3995 return 0; 3996} 3997 3998 3999void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4000 const u8 *ie, size_t ie_len) 4001{ 4002 struct p2p_message msg; 4003 4004 if (bssid == NULL || ie == NULL) 4005 return; 4006 4007 os_memset(&msg, 0, sizeof(msg)); 4008 if (p2p_parse_ies(ie, ie_len, &msg)) 4009 return; 4010 if (msg.minor_reason_code == NULL) 4011 return; 4012 4013 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 4014 "P2P: Deauthentication notification BSSID " MACSTR 4015 " reason_code=%u minor_reason_code=%u", 4016 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4017 4018 p2p_parse_free(&msg); 4019} 4020 4021 4022void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4023 const u8 *ie, size_t ie_len) 4024{ 4025 struct p2p_message msg; 4026 4027 if (bssid == NULL || ie == NULL) 4028 return; 4029 4030 os_memset(&msg, 0, sizeof(msg)); 4031 if (p2p_parse_ies(ie, ie_len, &msg)) 4032 return; 4033 if (msg.minor_reason_code == NULL) 4034 return; 4035 4036 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 4037 "P2P: Disassociation notification BSSID " MACSTR 4038 " reason_code=%u minor_reason_code=%u", 4039 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4040 4041 p2p_parse_free(&msg); 4042} 4043 4044 4045void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 4046{ 4047 if (enabled) { 4048 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4049 "Device operations enabled"); 4050 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4051 } else { 4052 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P " 4053 "Device operations disabled"); 4054 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4055 } 4056} 4057 4058 4059int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel) 4060{ 4061 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0) 4062 return -1; 4063 4064 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: " 4065 "reg_class %u channel %u", reg_class, channel); 4066 p2p->cfg->reg_class = reg_class; 4067 p2p->cfg->channel = channel; 4068 4069 return 0; 4070} 4071 4072 4073int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4074{ 4075 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len); 4076 if (postfix == NULL) { 4077 p2p->cfg->ssid_postfix_len = 0; 4078 return 0; 4079 } 4080 if (len > sizeof(p2p->cfg->ssid_postfix)) 4081 return -1; 4082 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4083 p2p->cfg->ssid_postfix_len = len; 4084 return 0; 4085} 4086 4087 4088int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4089 int cfg_op_channel) 4090{ 4091 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel) 4092 < 0) 4093 return -1; 4094 4095 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: " 4096 "reg_class %u channel %u", op_reg_class, op_channel); 4097 p2p->cfg->op_reg_class = op_reg_class; 4098 p2p->cfg->op_channel = op_channel; 4099 p2p->cfg->cfg_op_channel = cfg_op_channel; 4100 return 0; 4101} 4102 4103 4104int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4105 const struct p2p_channel *pref_chan) 4106{ 4107 struct p2p_channel *n; 4108 4109 if (pref_chan) { 4110 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel)); 4111 if (n == NULL) 4112 return -1; 4113 os_memcpy(n, pref_chan, 4114 num_pref_chan * sizeof(struct p2p_channel)); 4115 } else 4116 n = NULL; 4117 4118 os_free(p2p->cfg->pref_chan); 4119 p2p->cfg->pref_chan = n; 4120 p2p->cfg->num_pref_chan = num_pref_chan; 4121 4122 return 0; 4123} 4124 4125 4126int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4127 u8 *iface_addr) 4128{ 4129 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4130 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4131 return -1; 4132 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4133 return 0; 4134} 4135 4136 4137int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4138 u8 *dev_addr) 4139{ 4140 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4141 if (dev == NULL) 4142 return -1; 4143 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4144 return 0; 4145} 4146 4147 4148void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4149{ 4150 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4151 if (is_zero_ether_addr(p2p->peer_filter)) 4152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer " 4153 "filter"); 4154 else 4155 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer " 4156 "filter for " MACSTR, MAC2STR(p2p->peer_filter)); 4157} 4158 4159 4160void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4161{ 4162 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s", 4163 enabled ? "enabled" : "disabled"); 4164 if (p2p->cross_connect == enabled) 4165 return; 4166 p2p->cross_connect = enabled; 4167 /* TODO: may need to tear down any action group where we are GO(?) */ 4168} 4169 4170 4171int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4172{ 4173 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4174 if (dev == NULL) 4175 return -1; 4176 if (dev->oper_freq <= 0) 4177 return -1; 4178 return dev->oper_freq; 4179} 4180 4181 4182void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4183{ 4184 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s", 4185 enabled ? "enabled" : "disabled"); 4186 p2p->cfg->p2p_intra_bss = enabled; 4187} 4188 4189 4190void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan) 4191{ 4192 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list"); 4193 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4194} 4195 4196 4197int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4198 const u8 *src, const u8 *bssid, const u8 *buf, 4199 size_t len, unsigned int wait_time) 4200{ 4201 if (p2p->p2p_scan_running) { 4202 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action " 4203 "frame TX until p2p_scan completes"); 4204 if (p2p->after_scan_tx) { 4205 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped " 4206 "previous pending Action frame TX"); 4207 os_free(p2p->after_scan_tx); 4208 } 4209 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4210 len); 4211 if (p2p->after_scan_tx == NULL) 4212 return -1; 4213 p2p->after_scan_tx->freq = freq; 4214 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4215 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4216 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4217 p2p->after_scan_tx->len = len; 4218 p2p->after_scan_tx->wait_time = wait_time; 4219 os_memcpy(p2p->after_scan_tx + 1, buf, len); 4220 return 0; 4221 } 4222 4223 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 4224 buf, len, wait_time); 4225} 4226 4227 4228void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 4229 int freq_overall) 4230{ 4231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d," 4232 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall); 4233 p2p->best_freq_24 = freq_24; 4234 p2p->best_freq_5 = freq_5; 4235 p2p->best_freq_overall = freq_overall; 4236} 4237 4238 4239const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 4240{ 4241 if (p2p == NULL || p2p->go_neg_peer == NULL) 4242 return NULL; 4243 return p2p->go_neg_peer->info.p2p_device_addr; 4244} 4245 4246 4247const struct p2p_peer_info * 4248p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 4249{ 4250 struct p2p_device *dev; 4251 4252 if (addr) { 4253 dev = p2p_get_device(p2p, addr); 4254 if (!dev) 4255 return NULL; 4256 4257 if (!next) { 4258 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4259 return NULL; 4260 4261 return &dev->info; 4262 } else { 4263 do { 4264 dev = dl_list_first(&dev->list, 4265 struct p2p_device, 4266 list); 4267 if (&dev->list == &p2p->devices) 4268 return NULL; 4269 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 4270 } 4271 } else { 4272 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4273 if (!dev) 4274 return NULL; 4275 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 4276 dev = dl_list_first(&dev->list, 4277 struct p2p_device, 4278 list); 4279 if (&dev->list == &p2p->devices) 4280 return NULL; 4281 } 4282 } 4283 4284 return &dev->info; 4285} 4286 4287#ifdef ANDROID_P2P 4288int p2p_search_in_progress(struct p2p_data *p2p) 4289{ 4290 if (p2p == NULL) 4291 return 0; 4292 4293 return p2p->state == P2P_SEARCH; 4294} 4295#endif 4296 4297int p2p_in_progress(struct p2p_data *p2p) 4298{ 4299 if (p2p == NULL) 4300 return 0; 4301 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY || 4302 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) 4303 return 2; 4304 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 4305} 4306 4307 4308void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 4309 u8 client_timeout) 4310{ 4311 if (p2p) { 4312 p2p->go_timeout = go_timeout; 4313 p2p->client_timeout = client_timeout; 4314 } 4315} 4316 4317 4318void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay) 4319{ 4320 if (p2p && p2p->search_delay < delay) 4321 p2p->search_delay = delay; 4322} 4323 4324 4325#ifdef CONFIG_WIFI_DISPLAY 4326 4327static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 4328{ 4329 size_t g; 4330 struct p2p_group *group; 4331 4332 for (g = 0; g < p2p->num_groups; g++) { 4333 group = p2p->groups[g]; 4334 p2p_group_update_ies(group); 4335 } 4336} 4337 4338 4339int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 4340{ 4341 wpabuf_free(p2p->wfd_ie_beacon); 4342 p2p->wfd_ie_beacon = ie; 4343 p2p_update_wfd_ie_groups(p2p); 4344 return 0; 4345} 4346 4347 4348int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 4349{ 4350 wpabuf_free(p2p->wfd_ie_probe_req); 4351 p2p->wfd_ie_probe_req = ie; 4352 return 0; 4353} 4354 4355 4356int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 4357{ 4358 wpabuf_free(p2p->wfd_ie_probe_resp); 4359 p2p->wfd_ie_probe_resp = ie; 4360 p2p_update_wfd_ie_groups(p2p); 4361 return 0; 4362} 4363 4364 4365int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 4366{ 4367 wpabuf_free(p2p->wfd_ie_assoc_req); 4368 p2p->wfd_ie_assoc_req = ie; 4369 return 0; 4370} 4371 4372 4373int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 4374{ 4375 wpabuf_free(p2p->wfd_ie_invitation); 4376 p2p->wfd_ie_invitation = ie; 4377 return 0; 4378} 4379 4380 4381int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 4382{ 4383 wpabuf_free(p2p->wfd_ie_prov_disc_req); 4384 p2p->wfd_ie_prov_disc_req = ie; 4385 return 0; 4386} 4387 4388 4389int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 4390{ 4391 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 4392 p2p->wfd_ie_prov_disc_resp = ie; 4393 return 0; 4394} 4395 4396 4397int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 4398{ 4399 wpabuf_free(p2p->wfd_ie_go_neg); 4400 p2p->wfd_ie_go_neg = ie; 4401 return 0; 4402} 4403 4404 4405int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 4406{ 4407 wpabuf_free(p2p->wfd_dev_info); 4408 if (elem) { 4409 p2p->wfd_dev_info = wpabuf_dup(elem); 4410 if (p2p->wfd_dev_info == NULL) 4411 return -1; 4412 } else 4413 p2p->wfd_dev_info = NULL; 4414 4415 return 0; 4416} 4417 4418 4419int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 4420{ 4421 wpabuf_free(p2p->wfd_assoc_bssid); 4422 if (elem) { 4423 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 4424 if (p2p->wfd_assoc_bssid == NULL) 4425 return -1; 4426 } else 4427 p2p->wfd_assoc_bssid = NULL; 4428 4429 return 0; 4430} 4431 4432 4433int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 4434 const struct wpabuf *elem) 4435{ 4436 wpabuf_free(p2p->wfd_coupled_sink_info); 4437 if (elem) { 4438 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 4439 if (p2p->wfd_coupled_sink_info == NULL) 4440 return -1; 4441 } else 4442 p2p->wfd_coupled_sink_info = NULL; 4443 4444 return 0; 4445} 4446 4447#endif /* CONFIG_WIFI_DISPLAY */ 4448 4449 4450int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 4451 int max_disc_tu) 4452{ 4453 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 4454 return -1; 4455 4456 p2p->min_disc_int = min_disc_int; 4457 p2p->max_disc_int = max_disc_int; 4458 p2p->max_disc_tu = max_disc_tu; 4459 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: " 4460 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int, 4461 max_disc_tu); 4462 4463 return 0; 4464} 4465