src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "common/ieee802_11_common.h"
  21 #include "wps/wps_i.h"
  22 #include "p2p_i.h"
  23 #include "p2p.h"
  24
  25
  26 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  27 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  28 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  29                                      const u8 *sa, const u8 *data, size_t len,
  30                                      int rx_freq);
  31 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  32                                       const u8 *sa, const u8 *data,
  33                                       size_t len);
  34 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  35 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  36
  37
  38 /*
  39  * p2p_scan recovery timeout
  40  *
  41  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  42  * timeout for this to avoid hitting P2P timeout unnecessarily.
  43  */
  44 #define P2P_SCAN_TIMEOUT 35
  45
  46 /**
  47  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  48  * entries will be removed
  49  */
  50 #define P2P_PEER_EXPIRATION_AGE 300
  51
  52 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  53
  54 static void p2p_expire_peers(struct p2p_data *p2p)
  55 {
  56         struct p2p_device *dev, *n;
  57         struct os_time now;
  58
  59         os_get_time(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
  64                         "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
  65                 dl_list_del(&dev->list);
  66                 p2p_device_free(p2p, dev);
  67         }
  68 }
  69
  70
  71 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
  72 {
  73         struct p2p_data *p2p = eloop_ctx;
  74         p2p_expire_peers(p2p);
  75         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
  76                                p2p_expiration_timeout, p2p, NULL);
  77 }
  78
  79
  80 static const char * p2p_state_txt(int state)
  81 {
  82         switch (state) {
  83         case P2P_IDLE:
  84                 return "IDLE";
  85         case P2P_SEARCH:
  86                 return "SEARCH";
  87         case P2P_CONNECT:
  88                 return "CONNECT";
  89         case P2P_CONNECT_LISTEN:
  90                 return "CONNECT_LISTEN";
  91         case P2P_GO_NEG:
  92                 return "GO_NEG";
  93         case P2P_LISTEN_ONLY:
  94                 return "LISTEN_ONLY";
  95         case P2P_WAIT_PEER_CONNECT:
  96                 return "WAIT_PEER_CONNECT";
  97         case P2P_WAIT_PEER_IDLE:
  98                 return "WAIT_PEER_IDLE";
  99         case P2P_SD_DURING_FIND:
 100                 return "SD_DURING_FIND";
 101         case P2P_PROVISIONING:
 102                 return "PROVISIONING";
 103         case P2P_PD_DURING_FIND:
 104                 return "PD_DURING_FIND";
 105         case P2P_INVITE:
 106                 return "INVITE";
 107         case P2P_INVITE_LISTEN:
 108                 return "INVITE_LISTEN";
 109         case P2P_SEARCH_WHEN_READY:
 110                 return "SEARCH_WHEN_READY";
 111         default:
 112                 return "?";
 113         }
 114 }
 115
 116
 117 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 118 {
 119         struct p2p_device *dev = NULL;
 120
 121         if (!addr || !p2p)
 122                 return 0;
 123
 124         dev = p2p_get_device(p2p, addr);
 125         if (dev)
 126                 return dev->wps_prov_info;
 127         else
 128                 return 0;
 129 }
 130
 131
 132 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *iface_addr)
 133 {
 134         struct p2p_device *dev = NULL;
 135
 136         if (!iface_addr || !p2p)
 137                 return;
 138
 139         dev = p2p_get_device_interface(p2p, iface_addr);
 140         if (dev)
 141                 dev->wps_prov_info = 0;
 142 }
 143
 144
 145 void p2p_set_state(struct p2p_data *p2p, int new_state)
 146 {
 147         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
 148                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 149         p2p->state = new_state;
 150 }
 151
 152
 153 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 154 {
 155         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 156                 "P2P: Set timeout (state=%s): %u.%06u sec",
 157                 p2p_state_txt(p2p->state), sec, usec);
 158         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 159         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 160 }
 161
 162
 163 void p2p_clear_timeout(struct p2p_data *p2p)
 164 {
 165         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
 166                 p2p_state_txt(p2p->state));
 167         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 168 }
 169
 170
 171 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 172                        int status)
 173 {
 174         struct p2p_go_neg_results res;
 175         p2p_clear_timeout(p2p);
 176         p2p_set_state(p2p, P2P_IDLE);
 177         if (p2p->go_neg_peer)
 178                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 179         p2p->go_neg_peer = NULL;
 180
 181         os_memset(&res, 0, sizeof(res));
 182         res.status = status;
 183         if (peer) {
 184                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 185                           ETH_ALEN);
 186                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 187                           ETH_ALEN);
 188         }
 189         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 190 }
 191
 192
 193 static void p2p_listen_in_find(struct p2p_data *p2p)
 194 {
 195         unsigned int r, tu;
 196         int freq;
 197         struct wpabuf *ies;
 198
 199         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 200                 "P2P: Starting short listen state (state=%s)",
 201                 p2p_state_txt(p2p->state));
 202
 203         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 204                                    p2p->cfg->channel);
 205         if (freq < 0) {
 206                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 207                         "P2P: Unknown regulatory class/channel");
 208                 return;
 209         }
 210
 211         os_get_random((u8 *) &r, sizeof(r));
 212         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 213               p2p->min_disc_int) * 100;
 214
 215         p2p->pending_listen_freq = freq;
 216         p2p->pending_listen_sec = 0;
 217         p2p->pending_listen_usec = 1024 * tu;
 218
 219         ies = p2p_build_probe_resp_ies(p2p);
 220         if (ies == NULL)
 221                 return;
 222
 223         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 224                     ies) < 0) {
 225                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 226                         "P2P: Failed to start listen mode");
 227                 p2p->pending_listen_freq = 0;
 228         }
 229         wpabuf_free(ies);
 230 }
 231
 232
 233 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 234 {
 235         int freq;
 236         struct wpabuf *ies;
 237
 238         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 239                 "P2P: Going to listen(only) state");
 240
 241         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 242                                    p2p->cfg->channel);
 243         if (freq < 0) {
 244                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 245                         "P2P: Unknown regulatory class/channel");
 246                 return -1;
 247         }
 248
 249         p2p->pending_listen_freq = freq;
 250         p2p->pending_listen_sec = timeout / 1000;
 251         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 252
 253         if (p2p->p2p_scan_running) {
 254                 if (p2p->start_after_scan == P2P_AFTER_SCAN_NOTHING) {
 255                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 256                                 "P2P: p2p_scan running - connect is already "
 257                                 "pending - skip listen");
 258                         return 0;
 259                 }
 260                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 261                         "P2P: p2p_scan running - delay start of listen state");
 262                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 263                 return 0;
 264         }
 265
 266         ies = p2p_build_probe_resp_ies(p2p);
 267         if (ies == NULL)
 268                 return -1;
 269
 270         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 271                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 272                         "P2P: Failed to start listen mode");
 273                 p2p->pending_listen_freq = 0;
 274                 wpabuf_free(ies);
 275                 return -1;
 276         }
 277         wpabuf_free(ies);
 278
 279         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 280
 281         return 0;
 282 }
 283
 284
 285 static void p2p_device_clear_reported(struct p2p_data *p2p)
 286 {
 287         struct p2p_device *dev;
 288         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 289                 dev->flags &= ~P2P_DEV_REPORTED;
 290 }
 291
 292
 293 /**
 294  * p2p_get_device - Fetch a peer entry
 295  * @p2p: P2P module context from p2p_init()
 296  * @addr: P2P Device Address of the peer
 297  * Returns: Pointer to the device entry or %NULL if not found
 298  */
 299 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 300 {
 301         struct p2p_device *dev;
 302         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 303                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 304                         return dev;
 305         }
 306         return NULL;
 307 }
 308
 309
 310 /**
 311  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 312  * @p2p: P2P module context from p2p_init()
 313  * @addr: P2P Interface Address of the peer
 314  * Returns: Pointer to the device entry or %NULL if not found
 315  */
 316 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 317                                              const u8 *addr)
 318 {
 319         struct p2p_device *dev;
 320         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 321                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 322                         return dev;
 323         }
 324         return NULL;
 325 }
 326
 327
 328 /**
 329  * p2p_create_device - Create a peer entry
 330  * @p2p: P2P module context from p2p_init()
 331  * @addr: P2P Device Address of the peer
 332  * Returns: Pointer to the device entry or %NULL on failure
 333  *
 334  * If there is already an entry for the peer, it will be returned instead of
 335  * creating a new one.
 336  */
 337 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 338                                              const u8 *addr)
 339 {
 340         struct p2p_device *dev, *oldest = NULL;
 341         size_t count = 0;
 342
 343         dev = p2p_get_device(p2p, addr);
 344         if (dev)
 345                 return dev;
 346
 347         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 348                 count++;
 349                 if (oldest == NULL ||
 350                     os_time_before(&dev->last_seen, &oldest->last_seen))
 351                         oldest = dev;
 352         }
 353         if (count + 1 > p2p->cfg->max_peers && oldest) {
 354                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 355                         "P2P: Remove oldest peer entry to make room for a new "
 356                         "peer");
 357                 dl_list_del(&oldest->list);
 358                 p2p_device_free(p2p, oldest);
 359         }
 360
 361         dev = os_zalloc(sizeof(*dev));
 362         if (dev == NULL)
 363                 return NULL;
 364         dl_list_add(&p2p->devices, &dev->list);
 365         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 366
 367         return dev;
 368 }
 369
 370
 371 static void p2p_copy_client_info(struct p2p_device *dev,
 372                                  struct p2p_client_info *cli)
 373 {
 374         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 375         dev->info.device_name[cli->dev_name_len] = '\0';
 376         dev->info.dev_capab = cli->dev_capab;
 377         dev->info.config_methods = cli->config_methods;
 378         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 379         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 380         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 381                   dev->info.wps_sec_dev_type_list_len);
 382 }
 383
 384
 385 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 386                                  const u8 *go_interface_addr, int freq,
 387                                  const u8 *gi, size_t gi_len)
 388 {
 389         struct p2p_group_info info;
 390         size_t c;
 391         struct p2p_device *dev;
 392
 393         if (gi == NULL)
 394                 return 0;
 395
 396         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 397                 return -1;
 398
 399         /*
 400          * Clear old data for this group; if the devices are still in the
 401          * group, the information will be restored in the loop following this.
 402          */
 403         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 404                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 405                               ETH_ALEN) == 0) {
 406                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 407                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 408                 }
 409         }
 410
 411         for (c = 0; c < info.num_clients; c++) {
 412                 struct p2p_client_info *cli = &info.client[c];
 413                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 414                               ETH_ALEN) == 0)
 415                         continue; /* ignore our own entry */
 416                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 417                 if (dev) {
 418                         /*
 419                          * Update information only if we have not received this
 420                          * directly from the client.
 421                          */
 422                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 423                                           P2P_DEV_PROBE_REQ_ONLY))
 424                                 p2p_copy_client_info(dev, cli);
 425                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 426                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 427                         }
 428                 } else {
 429                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 430                         if (dev == NULL)
 431                                 continue;
 432                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 433                         p2p_copy_client_info(dev, cli);
 434                         dev->oper_freq = freq;
 435                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 436                                             dev->info.p2p_device_addr,
 437                                             &dev->info, 1);
 438                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 439                 }
 440
 441                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 442                           ETH_ALEN);
 443                 os_get_time(&dev->last_seen);
 444                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 445                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 446                           ETH_ALEN);
 447         }
 448
 449         return 0;
 450 }
 451
 452
 453 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
 454                               const struct p2p_message *msg)
 455 {
 456         os_memcpy(dev->info.device_name, msg->device_name,
 457                   sizeof(dev->info.device_name));
 458
 459         if (msg->manufacturer &&
 460             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 461                 os_memset(dev->info.manufacturer, 0,
 462                           sizeof(dev->info.manufacturer));
 463                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 464                           msg->manufacturer_len);
 465         }
 466
 467         if (msg->model_name &&
 468             msg->model_name_len < sizeof(dev->info.model_name)) {
 469                 os_memset(dev->info.model_name, 0,
 470                           sizeof(dev->info.model_name));
 471                 os_memcpy(dev->info.model_name, msg->model_name,
 472                           msg->model_name_len);
 473         }
 474
 475         if (msg->model_number &&
 476             msg->model_number_len < sizeof(dev->info.model_number)) {
 477                 os_memset(dev->info.model_number, 0,
 478                           sizeof(dev->info.model_number));
 479                 os_memcpy(dev->info.model_number, msg->model_number,
 480                           msg->model_number_len);
 481         }
 482
 483         if (msg->serial_number &&
 484             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 485                 os_memset(dev->info.serial_number, 0,
 486                           sizeof(dev->info.serial_number));
 487                 os_memcpy(dev->info.serial_number, msg->serial_number,
 488                           msg->serial_number_len);
 489         }
 490
 491         if (msg->pri_dev_type)
 492                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 493                           sizeof(dev->info.pri_dev_type));
 494         else if (msg->wps_pri_dev_type)
 495                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 496                           sizeof(dev->info.pri_dev_type));
 497
 498         if (msg->wps_sec_dev_type_list) {
 499                 os_memcpy(dev->info.wps_sec_dev_type_list,
 500                           msg->wps_sec_dev_type_list,
 501                           msg->wps_sec_dev_type_list_len);
 502                 dev->info.wps_sec_dev_type_list_len =
 503                         msg->wps_sec_dev_type_list_len;
 504         }
 505
 506         if (msg->capability) {
 507                 dev->info.dev_capab = msg->capability[0];
 508                 dev->info.group_capab = msg->capability[1];
 509         }
 510
 511         if (msg->ext_listen_timing) {
 512                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 513                 dev->ext_listen_interval =
 514                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 515         }
 516
 517         if (!probe_req) {
 518                 dev->info.config_methods = msg->config_methods ?
 519                         msg->config_methods : msg->wps_config_methods;
 520         }
 521 }
 522
 523
 524 /**
 525  * p2p_add_device - Add peer entries based on scan results
 526  * @p2p: P2P module context from p2p_init()
 527  * @addr: Source address of Beacon or Probe Response frame (may be either
 528  *      P2P Device Address or P2P Interface Address)
 529  * @level: Signal level (signal strength of the received frame from the peer)
 530  * @freq: Frequency on which the Beacon or Probe Response frame was received
 531  * @ies: IEs from the Beacon or Probe Response frame
 532  * @ies_len: Length of ies buffer in octets
 533  * Returns: 0 on success, -1 on failure
 534  *
 535  * If the scan result is for a GO, the clients in the group will also be added
 536  * to the peer table. This function can also be used with some other frames
 537  * like Provision Discovery Request that contains P2P Capability and P2P Device
 538  * Info attributes.
 539  */
 540 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
 541                    const u8 *ies, size_t ies_len)
 542 {
 543         struct p2p_device *dev;
 544         struct p2p_message msg;
 545         const u8 *p2p_dev_addr;
 546         int i;
 547
 548         os_memset(&msg, 0, sizeof(msg));
 549         if (p2p_parse_ies(ies, ies_len, &msg)) {
 550                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 551                         "P2P: Failed to parse P2P IE for a device entry");
 552                 p2p_parse_free(&msg);
 553                 return -1;
 554         }
 555
 556         if (msg.p2p_device_addr)
 557                 p2p_dev_addr = msg.p2p_device_addr;
 558         else if (msg.device_id)
 559                 p2p_dev_addr = msg.device_id;
 560         else {
 561                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 562                         "P2P: Ignore scan data without P2P Device Info or "
 563                         "P2P Device Id");
 564                 p2p_parse_free(&msg);
 565                 return -1;
 566         }
 567
 568         if (!is_zero_ether_addr(p2p->peer_filter) &&
 569             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 570                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
 571                         "filter for " MACSTR " due to peer filter",
 572                         MAC2STR(p2p_dev_addr));
 573                 return 0;
 574         }
 575
 576         dev = p2p_create_device(p2p, p2p_dev_addr);
 577         if (dev == NULL) {
 578                 p2p_parse_free(&msg);
 579                 return -1;
 580         }
 581         os_get_time(&dev->last_seen);
 582         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 583
 584         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 585                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 586         if (msg.ssid &&
 587             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 588              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 589              != 0)) {
 590                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 591                 dev->oper_ssid_len = msg.ssid[1];
 592         }
 593
 594         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 595             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 596                 int ds_freq;
 597                 if (*msg.ds_params == 14)
 598                         ds_freq = 2484;
 599                 else
 600                         ds_freq = 2407 + *msg.ds_params * 5;
 601                 if (freq != ds_freq) {
 602                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 603                                 "P2P: Update Listen frequency based on DS "
 604                                 "Parameter Set IE: %d -> %d MHz",
 605                                 freq, ds_freq);
 606                         freq = ds_freq;
 607                 }
 608         }
 609
 610         if (dev->listen_freq && dev->listen_freq != freq) {
 611                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 612                         "P2P: Update Listen frequency based on scan "
 613                         "results (" MACSTR " %d -> %d MHz (DS param %d)",
 614                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 615                         freq, msg.ds_params ? *msg.ds_params : -1);
 616         }
 617         dev->listen_freq = freq;
 618         if (msg.group_info)
 619                 dev->oper_freq = freq;
 620         dev->info.level = level;
 621
 622         p2p_copy_wps_info(dev, 0, &msg);
 623
 624         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 625                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 626                 dev->info.wps_vendor_ext[i] = NULL;
 627         }
 628
 629         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 630                 if (msg.wps_vendor_ext[i] == NULL)
 631                         break;
 632                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 633                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 634                 if (dev->info.wps_vendor_ext[i] == NULL)
 635                         break;
 636         }
 637
 638         p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
 639                               msg.group_info_len);
 640
 641         p2p_parse_free(&msg);
 642
 643         if (p2p_pending_sd_req(p2p, dev))
 644                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 645
 646         if (dev->flags & P2P_DEV_REPORTED)
 647                 return 0;
 648
 649         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 650                 "P2P: Peer found with Listen frequency %d MHz", freq);
 651         if (dev->flags & P2P_DEV_USER_REJECTED) {
 652                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 653                         "P2P: Do not report rejected device");
 654                 return 0;
 655         }
 656
 657         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 658                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 659         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 660
 661         return 0;
 662 }
 663
 664
 665 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 666 {
 667         int i;
 668
 669         if (p2p->go_neg_peer == dev) {
 670                 /*
 671                  * If GO Negotiation is in progress, report that it has failed.
 672                  */
 673                 p2p_go_neg_failed(p2p, dev, -1);
 674                 p2p->go_neg_peer = NULL;
 675         }
 676         if (p2p->invite_peer == dev)
 677                 p2p->invite_peer = NULL;
 678         if (p2p->sd_peer == dev)
 679                 p2p->sd_peer = NULL;
 680         if (p2p->pending_client_disc_go == dev)
 681                 p2p->pending_client_disc_go = NULL;
 682
 683         /* dev_lost() device, but only if it was previously dev_found() */
 684         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 685                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 686                                    dev->info.p2p_device_addr);
 687
 688         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 689                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 690                 dev->info.wps_vendor_ext[i] = NULL;
 691         }
 692
 693         os_free(dev);
 694 }
 695
 696
 697 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 698 {
 699         struct p2p_channels *c;
 700         struct p2p_reg_class *cla;
 701         size_t cl, ch;
 702         int found = 0;
 703         u8 reg_class;
 704         u8 channel;
 705         int freq;
 706
 707         c = &p2p->cfg->channels;
 708         for (cl = 0; cl < c->reg_classes; cl++) {
 709                 cla = &c->reg_class[cl];
 710                 if (cla->reg_class != p2p->last_prog_scan_class)
 711                         continue;
 712                 for (ch = 0; ch < cla->channels; ch++) {
 713                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 714                                 found = 1;
 715                                 break;
 716                         }
 717                 }
 718                 if (found)
 719                         break;
 720         }
 721
 722         if (!found) {
 723                 /* Start from beginning */
 724                 reg_class = c->reg_class[0].reg_class;
 725                 channel = c->reg_class[0].channel[0];
 726         } else {
 727                 /* Pick the next channel */
 728                 ch++;
 729                 if (ch == cla->channels) {
 730                         cl++;
 731                         if (cl == c->reg_classes)
 732                                 cl = 0;
 733                         ch = 0;
 734                 }
 735                 reg_class = c->reg_class[cl].reg_class;
 736                 channel = c->reg_class[cl].channel[ch];
 737         }
 738
 739         freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
 740         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
 741                 "channel: reg_class %u channel %u -> %d MHz",
 742                 reg_class, channel, freq);
 743         p2p->last_prog_scan_class = reg_class;
 744         p2p->last_prog_scan_chan = channel;
 745
 746         if (freq == 2412 || freq == 2437 || freq == 2462)
 747                 return 0; /* No need to add social channels */
 748         return freq;
 749 }
 750
 751
 752 static void p2p_search(struct p2p_data *p2p)
 753 {
 754         int freq = 0;
 755         enum p2p_scan_type type;
 756
 757         if (p2p->drv_in_listen) {
 758                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
 759                         "in Listen state - wait for it to end before "
 760                         "continuing");
 761                 return;
 762         }
 763         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 764
 765         if (p2p->go_neg_peer) {
 766                 /*
 767                  * Only scan the known listen frequency of the peer
 768                  * during GO Negotiation start.
 769                  */
 770                 freq = p2p->go_neg_peer->listen_freq;
 771                 if (freq <= 0)
 772                         freq = p2p->go_neg_peer->oper_freq;
 773                 type = P2P_SCAN_SPECIFIC;
 774                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 775                         "for freq %u (GO Neg)", freq);
 776         } else if (p2p->invite_peer) {
 777                 /*
 778                  * Only scan the known listen frequency of the peer
 779                  * during Invite start.
 780                  */
 781                 freq = p2p->invite_peer->listen_freq;
 782                 if (freq <= 0)
 783                         freq = p2p->invite_peer->oper_freq;
 784                 type = P2P_SCAN_SPECIFIC;
 785                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 786                         "for freq %u (Invite)", freq);
 787         } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 788                    (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 789                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 790                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 791                         "(+ freq %u)", freq);
 792         } else {
 793                 type = P2P_SCAN_SOCIAL;
 794                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
 795         }
 796
 797         if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 798                                p2p->num_req_dev_types, p2p->req_dev_types,
 799                                p2p->find_dev_id) < 0) {
 800                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 801                         "P2P: Scan request failed");
 802                 p2p_continue_find(p2p);
 803         } else {
 804                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 805                 p2p->p2p_scan_running = 1;
 806                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 807                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 808                                        p2p, NULL);
 809         }
 810 }
 811
 812
 813 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 814 {
 815         struct p2p_data *p2p = eloop_ctx;
 816         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
 817         p2p_stop_find(p2p);
 818 }
 819
 820
 821 static int p2p_run_after_scan(struct p2p_data *p2p)
 822 {
 823         struct p2p_device *dev;
 824         enum p2p_after_scan op;
 825
 826         if (p2p->after_scan_tx) {
 827                 /* TODO: schedule p2p_run_after_scan to be called from TX
 828                  * status callback(?) */
 829                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
 830                         "Action frame at p2p_scan completion");
 831                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 832                                       p2p->after_scan_tx->freq,
 833                                       p2p->after_scan_tx->dst,
 834                                       p2p->after_scan_tx->src,
 835                                       p2p->after_scan_tx->bssid,
 836                                       (u8 *) (p2p->after_scan_tx + 1),
 837                                       p2p->after_scan_tx->len,
 838                                       p2p->after_scan_tx->wait_time);
 839                 os_free(p2p->after_scan_tx);
 840                 p2p->after_scan_tx = NULL;
 841                 return 1;
 842         }
 843
 844         op = p2p->start_after_scan;
 845         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 846         switch (op) {
 847         case P2P_AFTER_SCAN_NOTHING:
 848                 break;
 849         case P2P_AFTER_SCAN_LISTEN:
 850                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 851                         "requested Listen state");
 852                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 853                            p2p->pending_listen_usec / 1000);
 854                 return 1;
 855         case P2P_AFTER_SCAN_CONNECT:
 856                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 857                         "requested connect with " MACSTR,
 858                         MAC2STR(p2p->after_scan_peer));
 859                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 860                 if (dev == NULL) {
 861                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
 862                                 "known anymore");
 863                         break;
 864                 }
 865                 p2p_connect_send(p2p, dev);
 866                 return 1;
 867         }
 868
 869         return 0;
 870 }
 871
 872
 873 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 874 {
 875         struct p2p_data *p2p = eloop_ctx;
 876         int running;
 877         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
 878                 "(running=%d)", p2p->p2p_scan_running);
 879         running = p2p->p2p_scan_running;
 880         /* Make sure we recover from missed scan results callback */
 881         p2p->p2p_scan_running = 0;
 882
 883         if (running)
 884                 p2p_run_after_scan(p2p);
 885 }
 886
 887
 888 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 889 {
 890         p2p->num_req_dev_types = 0;
 891         os_free(p2p->req_dev_types);
 892         p2p->req_dev_types = NULL;
 893 }
 894
 895
 896 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 897              enum p2p_discovery_type type,
 898              unsigned int num_req_dev_types, const u8 *req_dev_types,
 899              const u8 *dev_id)
 900 {
 901         int res;
 902
 903         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
 904                 type);
 905         if (p2p->p2p_scan_running) {
 906                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
 907                         "already running");
 908         }
 909
 910         p2p_free_req_dev_types(p2p);
 911         if (req_dev_types && num_req_dev_types) {
 912                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 913                                                WPS_DEV_TYPE_LEN);
 914                 if (p2p->req_dev_types == NULL)
 915                         return -1;
 916                 os_memcpy(p2p->req_dev_types, req_dev_types,
 917                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 918                 p2p->num_req_dev_types = num_req_dev_types;
 919         }
 920
 921         if (dev_id) {
 922                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
 923                 p2p->find_dev_id = p2p->find_dev_id_buf;
 924         } else
 925                 p2p->find_dev_id = NULL;
 926
 927         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 928         p2p_clear_timeout(p2p);
 929         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 930         p2p->find_type = type;
 931         p2p_device_clear_reported(p2p);
 932         p2p_set_state(p2p, P2P_SEARCH);
 933         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 934         p2p->last_p2p_find_timeout = timeout;
 935         if (timeout)
 936                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
 937                                        p2p, NULL);
 938         switch (type) {
 939         case P2P_FIND_START_WITH_FULL:
 940         case P2P_FIND_PROGRESSIVE:
 941                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
 942                                          p2p->num_req_dev_types,
 943                                          p2p->req_dev_types, dev_id);
 944                 break;
 945         case P2P_FIND_ONLY_SOCIAL:
 946                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
 947                                          p2p->num_req_dev_types,
 948                                          p2p->req_dev_types, dev_id);
 949                 break;
 950         default:
 951                 return -1;
 952         }
 953
 954         if (res == 0) {
 955                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 956                 p2p->p2p_scan_running = 1;
 957                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 958                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 959                                        p2p, NULL);
 960         } else if (res == 1) {
 961                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
 962                         "p2p_scan at this point - will try again after "
 963                         "previous scan completes");
 964                 res = 0;
 965                 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
 966                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 967         } else {
 968                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
 969                         "p2p_scan");
 970                 p2p_set_state(p2p, P2P_IDLE);
 971                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 972         }
 973
 974         return res;
 975 }
 976
 977
 978 int p2p_other_scan_completed(struct p2p_data *p2p)
 979 {
 980         if (p2p->state != P2P_SEARCH_WHEN_READY)
 981                 return 0;
 982         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
 983                 "now that previous scan was completed");
 984         if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
 985                      p2p->num_req_dev_types, p2p->req_dev_types,
 986                      p2p->find_dev_id) < 0)
 987                 return 0;
 988         return 1;
 989 }
 990
 991
 992 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
 993 {
 994         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
 995         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 996         p2p_clear_timeout(p2p);
 997         p2p_set_state(p2p, P2P_IDLE);
 998         p2p_free_req_dev_types(p2p);
 999         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1000         p2p->go_neg_peer = NULL;
1001         p2p->sd_peer = NULL;
1002         p2p->invite_peer = NULL;
1003         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1004                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1005                         "since we are on correct channel for response");
1006                 return;
1007         }
1008         if (p2p->drv_in_listen) {
1009                 /*
1010                  * The driver may not deliver callback to p2p_listen_end()
1011                  * when the operation gets canceled, so clear the internal
1012                  * variable that is tracking driver state.
1013                  */
1014                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1015                         "drv_in_listen (%d)", p2p->drv_in_listen);
1016                 p2p->drv_in_listen = 0;
1017         }
1018         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1019 }
1020
1021
1022 void p2p_stop_find(struct p2p_data *p2p)
1023 {
1024         p2p_stop_find_for_freq(p2p, 0);
1025 }
1026
1027
1028 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
1029 {
1030         if (force_freq) {
1031                 u8 op_reg_class, op_channel;
1032                 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1033                                         &op_reg_class, &op_channel) < 0) {
1034                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1035                                 "P2P: Unsupported frequency %u MHz",
1036                                 force_freq);
1037                         return -1;
1038                 }
1039                 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
1040                                            op_channel)) {
1041                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1042                                 "P2P: Frequency %u MHz (oper_class %u "
1043                                 "channel %u) not allowed for P2P",
1044                                 force_freq, op_reg_class, op_channel);
1045                         return -1;
1046                 }
1047                 p2p->op_reg_class = op_reg_class;
1048                 p2p->op_channel = op_channel;
1049                 p2p->channels.reg_classes = 1;
1050                 p2p->channels.reg_class[0].channels = 1;
1051                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1052                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1053         } else {
1054                 u8 op_reg_class, op_channel;
1055
1056                 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1057                     p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1058                     p2p_freq_to_channel(p2p->cfg->country,
1059                                         p2p->best_freq_overall,
1060                                         &op_reg_class, &op_channel) == 0) {
1061                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1062                                 "P2P: Select best overall channel as "
1063                                 "operating channel preference");
1064                         p2p->op_reg_class = op_reg_class;
1065                         p2p->op_channel = op_channel;
1066                 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1067                            p2p_supported_freq(p2p, p2p->best_freq_5) &&
1068                            p2p_freq_to_channel(p2p->cfg->country,
1069                                                p2p->best_freq_5,
1070                                                &op_reg_class, &op_channel) ==
1071                            0) {
1072                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1073                                 "P2P: Select best 5 GHz channel as "
1074                                 "operating channel preference");
1075                         p2p->op_reg_class = op_reg_class;
1076                         p2p->op_channel = op_channel;
1077                 } else if (!p2p->cfg->cfg_op_channel &&
1078                            p2p->best_freq_24 > 0 &&
1079                            p2p_supported_freq(p2p, p2p->best_freq_24) &&
1080                            p2p_freq_to_channel(p2p->cfg->country,
1081                                                p2p->best_freq_24,
1082                                                &op_reg_class, &op_channel) ==
1083                            0) {
1084                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1085                                 "P2P: Select best 2.4 GHz channel as "
1086                                 "operating channel preference");
1087                         p2p->op_reg_class = op_reg_class;
1088                         p2p->op_channel = op_channel;
1089                 } else {
1090                         p2p->op_reg_class = p2p->cfg->op_reg_class;
1091                         p2p->op_channel = p2p->cfg->op_channel;
1092                 }
1093
1094                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1095                           sizeof(struct p2p_channels));
1096         }
1097         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1098                 "P2P: Own preference for operation channel: "
1099                 "Operating Class %u Channel %u%s",
1100                 p2p->op_reg_class, p2p->op_channel,
1101                 force_freq ? " (forced)" : "");
1102
1103         return 0;
1104 }
1105
1106
1107 static void p2p_set_dev_persistent(struct p2p_device *dev,
1108                                    int persistent_group)
1109 {
1110         switch (persistent_group) {
1111         case 0:
1112                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1113                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1114                 break;
1115         case 1:
1116                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1117                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1118                 break;
1119         case 2:
1120                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1121                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1122                 break;
1123         }
1124 }
1125
1126
1127 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1128                 enum p2p_wps_method wps_method,
1129                 int go_intent, const u8 *own_interface_addr,
1130                 unsigned int force_freq, int persistent_group)
1131 {
1132         struct p2p_device *dev;
1133
1134         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1135                 "P2P: Request to start group negotiation - peer=" MACSTR
1136                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1137                 " wps_method=%d persistent_group=%d",
1138                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1139                 wps_method, persistent_group);
1140
1141         if (p2p_prepare_channel(p2p, force_freq) < 0)
1142                 return -1;
1143
1144         p2p->ssid_set = 0;
1145         dev = p2p_get_device(p2p, peer_addr);
1146         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1147                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1148                         "P2P: Cannot connect to unknown P2P Device " MACSTR,
1149                         MAC2STR(peer_addr));
1150                 return -1;
1151         }
1152
1153         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1154                 if (!(dev->info.dev_capab &
1155                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1156                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1157                                 "P2P: Cannot connect to P2P Device " MACSTR
1158                                 " that is in a group and is not discoverable",
1159                                 MAC2STR(peer_addr));
1160                         return -1;
1161                 }
1162                 if (dev->oper_freq <= 0) {
1163                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1164                                 "P2P: Cannot connect to P2P Device " MACSTR
1165                                 " with incomplete information",
1166                                 MAC2STR(peer_addr));
1167                         return -1;
1168                 }
1169
1170                 /*
1171                  * First, try to connect directly. If the peer does not
1172                  * acknowledge frames, assume it is sleeping and use device
1173                  * discoverability via the GO at that point.
1174                  */
1175         }
1176
1177         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1178         dev->flags &= ~P2P_DEV_USER_REJECTED;
1179         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1180         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1181         dev->connect_reqs = 0;
1182         dev->go_neg_req_sent = 0;
1183         dev->go_state = UNKNOWN_GO;
1184         p2p_set_dev_persistent(dev, persistent_group);
1185         p2p->go_intent = go_intent;
1186         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1187
1188         if (p2p->state != P2P_IDLE)
1189                 p2p_stop_find(p2p);
1190
1191         if (p2p->after_scan_tx) {
1192                 /*
1193                  * We need to drop the pending frame to avoid issues with the
1194                  * new GO Negotiation, e.g., when the pending frame was from a
1195                  * previous attempt at starting a GO Negotiation.
1196                  */
1197                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1198                         "previous pending Action frame TX that was waiting "
1199                         "for p2p_scan completion");
1200                 os_free(p2p->after_scan_tx);
1201                 p2p->after_scan_tx = NULL;
1202         }
1203
1204         dev->wps_method = wps_method;
1205         dev->status = P2P_SC_SUCCESS;
1206
1207         if (force_freq)
1208                 dev->flags |= P2P_DEV_FORCE_FREQ;
1209         else
1210                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1211
1212         if (p2p->p2p_scan_running) {
1213                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1214                         "P2P: p2p_scan running - delay connect send");
1215                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1216                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1217                 return 0;
1218         }
1219         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1220
1221         return p2p_connect_send(p2p, dev);
1222 }
1223
1224
1225 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1226                   enum p2p_wps_method wps_method,
1227                   int go_intent, const u8 *own_interface_addr,
1228                   unsigned int force_freq, int persistent_group)
1229 {
1230         struct p2p_device *dev;
1231
1232         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1233                 "P2P: Request to authorize group negotiation - peer=" MACSTR
1234                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1235                 " wps_method=%d  persistent_group=%d",
1236                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1237                 wps_method, persistent_group);
1238
1239         if (p2p_prepare_channel(p2p, force_freq) < 0)
1240                 return -1;
1241
1242         dev = p2p_get_device(p2p, peer_addr);
1243         if (dev == NULL) {
1244                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1245                         "P2P: Cannot authorize unknown P2P Device " MACSTR,
1246                         MAC2STR(peer_addr));
1247                 return -1;
1248         }
1249
1250         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1251         dev->flags &= ~P2P_DEV_USER_REJECTED;
1252         dev->go_neg_req_sent = 0;
1253         dev->go_state = UNKNOWN_GO;
1254         p2p_set_dev_persistent(dev, persistent_group);
1255         p2p->go_intent = go_intent;
1256         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1257
1258         dev->wps_method = wps_method;
1259         dev->status = P2P_SC_SUCCESS;
1260
1261         if (force_freq)
1262                 dev->flags |= P2P_DEV_FORCE_FREQ;
1263         else
1264                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1265
1266         return 0;
1267 }
1268
1269
1270 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1271                       struct p2p_device *dev, struct p2p_message *msg)
1272 {
1273         os_get_time(&dev->last_seen);
1274
1275         p2p_copy_wps_info(dev, 0, msg);
1276
1277         if (msg->listen_channel) {
1278                 int freq;
1279                 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1280                                            msg->listen_channel[3],
1281                                            msg->listen_channel[4]);
1282                 if (freq < 0) {
1283                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1284                                 "P2P: Unknown peer Listen channel: "
1285                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1286                                 msg->listen_channel[0],
1287                                 msg->listen_channel[1],
1288                                 msg->listen_channel[2],
1289                                 msg->listen_channel[3],
1290                                 msg->listen_channel[4]);
1291                 } else {
1292                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1293                                 "peer " MACSTR " Listen channel: %u -> %u MHz",
1294                                 MAC2STR(dev->info.p2p_device_addr),
1295                                 dev->listen_freq, freq);
1296                         dev->listen_freq = freq;
1297                 }
1298         }
1299
1300         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1301                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1302                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1303                         "P2P: Completed device entry based on data from "
1304                         "GO Negotiation Request");
1305         } else {
1306                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1307                         "P2P: Created device entry based on GO Neg Req: "
1308                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1309                         "listen_freq=%d",
1310                         MAC2STR(dev->info.p2p_device_addr),
1311                         dev->info.dev_capab, dev->info.group_capab,
1312                         dev->info.device_name, dev->listen_freq);
1313         }
1314
1315         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1316
1317         if (dev->flags & P2P_DEV_USER_REJECTED) {
1318                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1319                         "P2P: Do not report rejected device");
1320                 return;
1321         }
1322
1323         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1324                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1325         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1326 }
1327
1328
1329 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1330 {
1331         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1332         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1333         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1334                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1335         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1336 }
1337
1338
1339 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1340 {
1341         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1342         p2p_random(params->passphrase, 8);
1343         return 0;
1344 }
1345
1346
1347 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1348 {
1349         struct p2p_go_neg_results res;
1350         int go = peer->go_state == LOCAL_GO;
1351         struct p2p_channels intersection;
1352         int freqs;
1353         size_t i, j;
1354
1355         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1356                 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1357                 "GO)", MAC2STR(peer->info.p2p_device_addr),
1358                 go ? "local end" : "peer");
1359
1360         os_memset(&res, 0, sizeof(res));
1361         res.role_go = go;
1362         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1363         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1364         res.wps_method = peer->wps_method;
1365         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1366                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1367                         res.persistent_group = 2;
1368                 else
1369                         res.persistent_group = 1;
1370         }
1371
1372         if (go) {
1373                 /* Setup AP mode for WPS provisioning */
1374                 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1375                                                p2p->op_reg_class,
1376                                                p2p->op_channel);
1377                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1378                 res.ssid_len = p2p->ssid_len;
1379                 p2p_random(res.passphrase, 8);
1380         } else {
1381                 res.freq = peer->oper_freq;
1382                 if (p2p->ssid_len) {
1383                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1384                         res.ssid_len = p2p->ssid_len;
1385                 }
1386         }
1387
1388         p2p_channels_intersect(&p2p->channels, &peer->channels,
1389                                &intersection);
1390         freqs = 0;
1391         for (i = 0; i < intersection.reg_classes; i++) {
1392                 struct p2p_reg_class *c = &intersection.reg_class[i];
1393                 if (freqs + 1 == P2P_MAX_CHANNELS)
1394                         break;
1395                 for (j = 0; j < c->channels; j++) {
1396                         int freq;
1397                         if (freqs + 1 == P2P_MAX_CHANNELS)
1398                                 break;
1399                         freq = p2p_channel_to_freq(peer->country, c->reg_class,
1400                                                    c->channel[j]);
1401                         if (freq < 0)
1402                                 continue;
1403                         res.freq_list[freqs++] = freq;
1404                 }
1405         }
1406
1407         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1408
1409         p2p_clear_timeout(p2p);
1410         p2p->ssid_set = 0;
1411         peer->go_neg_req_sent = 0;
1412         peer->wps_method = WPS_NOT_READY;
1413
1414         p2p_set_state(p2p, P2P_PROVISIONING);
1415         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1416 }
1417
1418
1419 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1420                               const u8 *data, size_t len, int rx_freq)
1421 {
1422         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1423                 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1424         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1425
1426         if (len < 1)
1427                 return;
1428
1429         switch (data[0]) {
1430         case P2P_GO_NEG_REQ:
1431                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1432                 break;
1433         case P2P_GO_NEG_RESP:
1434                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1435                 break;
1436         case P2P_GO_NEG_CONF:
1437                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1438                 break;
1439         case P2P_INVITATION_REQ:
1440                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1441                                            rx_freq);
1442                 break;
1443         case P2P_INVITATION_RESP:
1444                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1445                 break;
1446         case P2P_PROV_DISC_REQ:
1447                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1448                 break;
1449         case P2P_PROV_DISC_RESP:
1450                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1451                 break;
1452         case P2P_DEV_DISC_REQ:
1453                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1454                 break;
1455         case P2P_DEV_DISC_RESP:
1456                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1457                 break;
1458         default:
1459                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1460                         "P2P: Unsupported P2P Public Action frame type %d",
1461                         data[0]);
1462                 break;
1463         }
1464 }
1465
1466
1467 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1468                                  const u8 *sa, const u8 *bssid, const u8 *data,
1469                                  size_t len, int freq)
1470 {
1471         if (len < 1)
1472                 return;
1473
1474         switch (data[0]) {
1475         case WLAN_PA_VENDOR_SPECIFIC:
1476                 data++;
1477                 len--;
1478                 if (len < 3)
1479                         return;
1480                 if (WPA_GET_BE24(data) != OUI_WFA)
1481                         return;
1482
1483                 data += 3;
1484                 len -= 3;
1485                 if (len < 1)
1486                         return;
1487
1488                 if (*data != P2P_OUI_TYPE)
1489                         return;
1490
1491                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1492                 break;
1493         case WLAN_PA_GAS_INITIAL_REQ:
1494                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1495                 break;
1496         case WLAN_PA_GAS_INITIAL_RESP:
1497                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1498                 break;
1499         case WLAN_PA_GAS_COMEBACK_REQ:
1500                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1501                 break;
1502         case WLAN_PA_GAS_COMEBACK_RESP:
1503                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1504                 break;
1505         }
1506 }
1507
1508
1509 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1510                    const u8 *bssid, u8 category,
1511                    const u8 *data, size_t len, int freq)
1512 {
1513         if (category == WLAN_ACTION_PUBLIC) {
1514                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1515                 return;
1516         }
1517
1518         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1519                 return;
1520
1521         if (len < 4)
1522                 return;
1523
1524         if (WPA_GET_BE24(data) != OUI_WFA)
1525                 return;
1526         data += 3;
1527         len -= 3;
1528
1529         if (*data != P2P_OUI_TYPE)
1530                 return;
1531         data++;
1532         len--;
1533
1534         /* P2P action frame */
1535         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1536                 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1537         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1538
1539         if (len < 1)
1540                 return;
1541         switch (data[0]) {
1542         case P2P_NOA:
1543                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1544                         "P2P: Received P2P Action - Notice of Absence");
1545                 /* TODO */
1546                 break;
1547         case P2P_PRESENCE_REQ:
1548                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1549                 break;
1550         case P2P_PRESENCE_RESP:
1551                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1552                 break;
1553         case P2P_GO_DISC_REQ:
1554                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1555                 break;
1556         default:
1557                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1558                         "P2P: Received P2P Action - unknown type %u", data[0]);
1559                 break;
1560         }
1561 }
1562
1563
1564 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1565 {
1566         struct p2p_data *p2p = eloop_ctx;
1567         if (p2p->go_neg_peer == NULL)
1568                 return;
1569         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1570         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1571         p2p_connect_send(p2p, p2p->go_neg_peer);
1572 }
1573
1574
1575 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1576 {
1577         struct p2p_data *p2p = eloop_ctx;
1578         if (p2p->invite_peer == NULL)
1579                 return;
1580         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1581         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1582 }
1583
1584
1585 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1586                                        const u8 *ie, size_t ie_len)
1587 {
1588         struct p2p_message msg;
1589         struct p2p_device *dev;
1590
1591         os_memset(&msg, 0, sizeof(msg));
1592         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1593         {
1594                 p2p_parse_free(&msg);
1595                 return; /* not a P2P probe */
1596         }
1597
1598         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1599             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1600             != 0) {
1601                 /* The Probe Request is not part of P2P Device Discovery. It is
1602                  * not known whether the source address of the frame is the P2P
1603                  * Device Address or P2P Interface Address. Do not add a new
1604                  * peer entry based on this frames.
1605                  */
1606                 p2p_parse_free(&msg);
1607                 return;
1608         }
1609
1610         dev = p2p_get_device(p2p, addr);
1611         if (dev) {
1612                 if (dev->country[0] == 0 && msg.listen_channel)
1613                         os_memcpy(dev->country, msg.listen_channel, 3);
1614                 os_get_time(&dev->last_seen);
1615                 p2p_parse_free(&msg);
1616                 return; /* already known */
1617         }
1618
1619         dev = p2p_create_device(p2p, addr);
1620         if (dev == NULL) {
1621                 p2p_parse_free(&msg);
1622                 return;
1623         }
1624
1625         os_get_time(&dev->last_seen);
1626         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1627
1628         if (msg.listen_channel) {
1629                 os_memcpy(dev->country, msg.listen_channel, 3);
1630                 dev->listen_freq = p2p_channel_to_freq(dev->country,
1631                                                        msg.listen_channel[3],
1632                                                        msg.listen_channel[4]);
1633         }
1634
1635         p2p_copy_wps_info(dev, 1, &msg);
1636
1637         p2p_parse_free(&msg);
1638
1639         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1640                 "P2P: Created device entry based on Probe Req: " MACSTR
1641                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1642                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1643                 dev->info.group_capab, dev->info.device_name,
1644                 dev->listen_freq);
1645 }
1646
1647
1648 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1649                                                 const u8 *addr,
1650                                                 struct p2p_message *msg)
1651 {
1652         struct p2p_device *dev;
1653
1654         dev = p2p_get_device(p2p, addr);
1655         if (dev) {
1656                 os_get_time(&dev->last_seen);
1657                 return dev; /* already known */
1658         }
1659
1660         dev = p2p_create_device(p2p, addr);
1661         if (dev == NULL)
1662                 return NULL;
1663
1664         p2p_add_dev_info(p2p, addr, dev, msg);
1665
1666         return dev;
1667 }
1668
1669
1670 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1671 {
1672         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1673                 return 1;
1674         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1675             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1676             WPA_GET_BE16(&req_dev_type[6]) == 0)
1677                 return 1; /* Category match with wildcard OUI/sub-category */
1678         return 0;
1679 }
1680
1681
1682 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1683                         size_t num_req_dev_type)
1684 {
1685         size_t i;
1686         for (i = 0; i < num_req_dev_type; i++) {
1687                 if (dev_type_match(dev_type, req_dev_type[i]))
1688                         return 1;
1689         }
1690         return 0;
1691 }
1692
1693
1694 /**
1695  * p2p_match_dev_type - Match local device type with requested type
1696  * @p2p: P2P module context from p2p_init()
1697  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1698  * Returns: 1 on match, 0 on mismatch
1699  *
1700  * This function can be used to match the Requested Device Type attribute in
1701  * WPS IE with the local device types for deciding whether to reply to a Probe
1702  * Request frame.
1703  */
1704 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1705 {
1706         struct wps_parse_attr attr;
1707         size_t i;
1708
1709         if (wps_parse_msg(wps, &attr))
1710                 return 1; /* assume no Requested Device Type attributes */
1711
1712         if (attr.num_req_dev_type == 0)
1713                 return 1; /* no Requested Device Type attributes -> match */
1714
1715         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1716                                 attr.num_req_dev_type))
1717                 return 1; /* Own Primary Device Type matches */
1718
1719         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1720                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1721                                         attr.req_dev_type,
1722                                         attr.num_req_dev_type))
1723                 return 1; /* Own Secondary Device Type matches */
1724
1725         /* No matching device type found */
1726         return 0;
1727 }
1728
1729
1730 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1731 {
1732         struct wpabuf *buf;
1733         u8 *len;
1734
1735         buf = wpabuf_alloc(1000);
1736         if (buf == NULL)
1737                 return NULL;
1738
1739         p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1740
1741         /* P2P IE */
1742         len = p2p_buf_add_ie_hdr(buf);
1743         p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1744         if (p2p->ext_listen_interval)
1745                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1746                                               p2p->ext_listen_interval);
1747         p2p_buf_add_device_info(buf, p2p, NULL);
1748         p2p_buf_update_ie_hdr(buf, len);
1749
1750         return buf;
1751 }
1752
1753
1754 static int is_11b(u8 rate)
1755 {
1756         return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1757 }
1758
1759
1760 static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1761 {
1762         int num_11b = 0, num_others = 0;
1763         int i;
1764
1765         if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1766                 return 0;
1767
1768         for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1769                 if (is_11b(elems->supp_rates[i]))
1770                         num_11b++;
1771                 else
1772                         num_others++;
1773         }
1774
1775         for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1776              i++) {
1777                 if (is_11b(elems->ext_supp_rates[i]))
1778                         num_11b++;
1779                 else
1780                         num_others++;
1781         }
1782
1783         return num_11b > 0 && num_others == 0;
1784 }
1785
1786
1787 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
1788                             const u8 *dst, const u8 *bssid, const u8 *ie,
1789                             size_t ie_len)
1790 {
1791         struct ieee802_11_elems elems;
1792         struct wpabuf *buf;
1793         struct ieee80211_mgmt *resp;
1794         struct p2p_message msg;
1795         struct wpabuf *ies;
1796
1797         if (!p2p->in_listen || !p2p->drv_in_listen) {
1798                 /* not in Listen state - ignore Probe Request */
1799                 return;
1800         }
1801
1802         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1803             ParseFailed) {
1804                 /* Ignore invalid Probe Request frames */
1805                 return;
1806         }
1807
1808         if (elems.p2p == NULL) {
1809                 /* not a P2P probe - ignore it */
1810                 return;
1811         }
1812
1813         if (dst && !is_broadcast_ether_addr(dst) &&
1814             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1815                 /* Not sent to the broadcast address or our P2P Device Address
1816                  */
1817                 return;
1818         }
1819
1820         if (bssid && !is_broadcast_ether_addr(bssid)) {
1821                 /* Not sent to the Wildcard BSSID */
1822                 return;
1823         }
1824
1825         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1826             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1827             0) {
1828                 /* not using P2P Wildcard SSID - ignore */
1829                 return;
1830         }
1831
1832         if (supp_rates_11b_only(&elems)) {
1833                 /* Indicates support for 11b rates only */
1834                 return;
1835         }
1836
1837         os_memset(&msg, 0, sizeof(msg));
1838         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1839                 /* Could not parse P2P attributes */
1840                 return;
1841         }
1842
1843         if (msg.device_id &&
1844             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN != 0)) {
1845                 /* Device ID did not match */
1846                 p2p_parse_free(&msg);
1847                 return;
1848         }
1849
1850         /* Check Requested Device Type match */
1851         if (msg.wps_attributes &&
1852             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
1853                 /* No match with Requested Device Type */
1854                 p2p_parse_free(&msg);
1855                 return;
1856         }
1857         p2p_parse_free(&msg);
1858
1859         if (!p2p->cfg->send_probe_resp)
1860                 return; /* Response generated elsewhere */
1861
1862         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1863                 "P2P: Reply to P2P Probe Request in Listen state");
1864
1865         /*
1866          * We do not really have a specific BSS that this frame is advertising,
1867          * so build a frame that has some information in valid format. This is
1868          * really only used for discovery purposes, not to learn exact BSS
1869          * parameters.
1870          */
1871         ies = p2p_build_probe_resp_ies(p2p);
1872         if (ies == NULL)
1873                 return;
1874
1875         buf = wpabuf_alloc(200 + wpabuf_len(ies));
1876         if (buf == NULL) {
1877                 wpabuf_free(ies);
1878                 return;
1879         }
1880
1881         resp = NULL;
1882         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1883
1884         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1885                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
1886         os_memcpy(resp->da, addr, ETH_ALEN);
1887         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1888         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1889         resp->u.probe_resp.beacon_int = host_to_le16(100);
1890         /* hardware or low-level driver will setup seq_ctrl and timestamp */
1891         resp->u.probe_resp.capab_info =
1892                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1893                              WLAN_CAPABILITY_PRIVACY |
1894                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
1895
1896         wpabuf_put_u8(buf, WLAN_EID_SSID);
1897         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1898         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1899
1900         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1901         wpabuf_put_u8(buf, 8);
1902         wpabuf_put_u8(buf, (60 / 5) | 0x80);
1903         wpabuf_put_u8(buf, 90 / 5);
1904         wpabuf_put_u8(buf, (120 / 5) | 0x80);
1905         wpabuf_put_u8(buf, 180 / 5);
1906         wpabuf_put_u8(buf, (240 / 5) | 0x80);
1907         wpabuf_put_u8(buf, 360 / 5);
1908         wpabuf_put_u8(buf, 480 / 5);
1909         wpabuf_put_u8(buf, 540 / 5);
1910
1911         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1912         wpabuf_put_u8(buf, 1);
1913         wpabuf_put_u8(buf, p2p->cfg->channel);
1914
1915         wpabuf_put_buf(buf, ies);
1916         wpabuf_free(ies);
1917
1918         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1919
1920         wpabuf_free(buf);
1921 }
1922
1923
1924 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1925                      const u8 *bssid, const u8 *ie, size_t ie_len)
1926 {
1927         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1928
1929         p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
1930
1931         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1932             p2p->go_neg_peer &&
1933             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1934             == 0) {
1935                 /* Received a Probe Request from GO Negotiation peer */
1936                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1937                         "P2P: Found GO Negotiation peer - try to start GO "
1938                         "negotiation from timeout");
1939                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1940                 return 1;
1941         }
1942
1943         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1944             p2p->invite_peer &&
1945             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1946             == 0) {
1947                 /* Received a Probe Request from Invite peer */
1948                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1949                         "P2P: Found Invite peer - try to start Invite from "
1950                         "timeout");
1951                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1952                 return 1;
1953         }
1954
1955         return 0;
1956 }
1957
1958
1959 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1960                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
1961 {
1962         struct wpabuf *tmp;
1963         u8 *lpos;
1964         size_t tmplen;
1965         int res;
1966         u8 group_capab;
1967
1968         if (p2p_ie == NULL)
1969                 return 0; /* WLAN AP is not a P2P manager */
1970
1971         /*
1972          * (Re)Association Request - P2P IE
1973          * P2P Capability attribute (shall be present)
1974          * P2P Interface attribute (present if concurrent device and
1975          *      P2P Management is enabled)
1976          */
1977         tmp = wpabuf_alloc(200);
1978         if (tmp == NULL)
1979                 return -1;
1980
1981         lpos = p2p_buf_add_ie_hdr(tmp);
1982         group_capab = 0;
1983         if (p2p->num_groups > 0) {
1984                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1985                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1986                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1987                     p2p->cross_connect)
1988                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1989         }
1990         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1991         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1992             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1993                 p2p_buf_add_p2p_interface(tmp, p2p);
1994         p2p_buf_update_ie_hdr(tmp, lpos);
1995
1996         tmplen = wpabuf_len(tmp);
1997         if (tmplen > len)
1998                 res = -1;
1999         else {
2000                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2001                 res = tmplen;
2002         }
2003         wpabuf_free(tmp);
2004
2005         return res;
2006 }
2007
2008
2009 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2010                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2011 {
2012         struct wpabuf *tmp;
2013         u8 *lpos;
2014         struct p2p_device *peer;
2015         size_t tmplen;
2016         int res;
2017
2018         if (!p2p_group)
2019                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2020
2021         /*
2022          * (Re)Association Request - P2P IE
2023          * P2P Capability attribute (shall be present)
2024          * Extended Listen Timing (may be present)
2025          * P2P Device Info attribute (shall be present)
2026          */
2027         tmp = wpabuf_alloc(200);
2028         if (tmp == NULL)
2029                 return -1;
2030
2031         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2032
2033         lpos = p2p_buf_add_ie_hdr(tmp);
2034         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2035         if (p2p->ext_listen_interval)
2036                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2037                                               p2p->ext_listen_interval);
2038         p2p_buf_add_device_info(tmp, p2p, peer);
2039         p2p_buf_update_ie_hdr(tmp, lpos);
2040
2041         tmplen = wpabuf_len(tmp);
2042         if (tmplen > len)
2043                 res = -1;
2044         else {
2045                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2046                 res = tmplen;
2047         }
2048         wpabuf_free(tmp);
2049
2050         return res;
2051 }
2052
2053
2054 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2055 {
2056         struct wpabuf *p2p_ie;
2057         int ret;
2058
2059         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2060         if (p2p_ie == NULL)
2061                 return 0;
2062
2063         ret = p2p_attr_text(p2p_ie, buf, end);
2064         wpabuf_free(p2p_ie);
2065         return ret;
2066 }
2067
2068
2069 static void p2p_clear_go_neg(struct p2p_data *p2p)
2070 {
2071         p2p->go_neg_peer = NULL;
2072         p2p_clear_timeout(p2p);
2073         p2p_set_state(p2p, P2P_IDLE);
2074 }
2075
2076
2077 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2078 {
2079         if (p2p->go_neg_peer == NULL) {
2080                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2081                         "P2P: No pending Group Formation - "
2082                         "ignore WPS registration success notification");
2083                 return; /* No pending Group Formation */
2084         }
2085
2086         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2087             0) {
2088                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2089                         "P2P: Ignore WPS registration success notification "
2090                         "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2091                         MAC2STR(mac_addr),
2092                         MAC2STR(p2p->go_neg_peer->intended_addr));
2093                 return; /* Ignore unexpected peer address */
2094         }
2095
2096         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2097                 "P2P: Group Formation completed successfully with " MACSTR,
2098                 MAC2STR(mac_addr));
2099
2100         p2p_clear_go_neg(p2p);
2101 }
2102
2103
2104 void p2p_group_formation_failed(struct p2p_data *p2p)
2105 {
2106         if (p2p->go_neg_peer == NULL) {
2107                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2108                         "P2P: No pending Group Formation - "
2109                         "ignore group formation failure notification");
2110                 return; /* No pending Group Formation */
2111         }
2112
2113         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2114                 "P2P: Group Formation failed with " MACSTR,
2115                 MAC2STR(p2p->go_neg_peer->intended_addr));
2116
2117         p2p_clear_go_neg(p2p);
2118 }
2119
2120
2121 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2122 {
2123         struct p2p_data *p2p;
2124
2125         if (cfg->max_peers < 1)
2126                 return NULL;
2127
2128         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2129         if (p2p == NULL)
2130                 return NULL;
2131         p2p->cfg = (struct p2p_config *) (p2p + 1);
2132         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2133         if (cfg->dev_name)
2134                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2135         if (cfg->manufacturer)
2136                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2137         if (cfg->model_name)
2138                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2139         if (cfg->model_number)
2140                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2141         if (cfg->serial_number)
2142                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2143
2144         p2p->min_disc_int = 1;
2145         p2p->max_disc_int = 3;
2146
2147         os_get_random(&p2p->next_tie_breaker, 1);
2148         p2p->next_tie_breaker &= 0x01;
2149         if (cfg->sd_request)
2150                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2151         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2152         if (cfg->concurrent_operations)
2153                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2154         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2155
2156         dl_list_init(&p2p->devices);
2157
2158         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2159                                p2p_expiration_timeout, p2p, NULL);
2160
2161         return p2p;
2162 }
2163
2164
2165 void p2p_deinit(struct p2p_data *p2p)
2166 {
2167         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2168         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2169         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2170         p2p_flush(p2p);
2171         p2p_free_req_dev_types(p2p);
2172         os_free(p2p->cfg->dev_name);
2173         os_free(p2p->cfg->manufacturer);
2174         os_free(p2p->cfg->model_name);
2175         os_free(p2p->cfg->model_number);
2176         os_free(p2p->cfg->serial_number);
2177         os_free(p2p->groups);
2178         wpabuf_free(p2p->sd_resp);
2179         os_free(p2p->after_scan_tx);
2180         p2p_remove_wps_vendor_extensions(p2p);
2181         os_free(p2p);
2182 }
2183
2184
2185 void p2p_flush(struct p2p_data *p2p)
2186 {
2187         struct p2p_device *dev, *prev;
2188         p2p_clear_timeout(p2p);
2189         p2p_set_state(p2p, P2P_IDLE);
2190         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2191         p2p->go_neg_peer = NULL;
2192         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2193         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2194                               list) {
2195                 dl_list_del(&dev->list);
2196                 p2p_device_free(p2p, dev);
2197         }
2198         p2p_free_sd_queries(p2p);
2199         os_free(p2p->after_scan_tx);
2200         p2p->after_scan_tx = NULL;
2201 }
2202
2203
2204 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2205 {
2206         struct p2p_device *dev;
2207
2208         dev = p2p_get_device(p2p, addr);
2209         if (dev == NULL)
2210                 return -1;
2211
2212         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2213                 MAC2STR(addr));
2214
2215         if (p2p->go_neg_peer == dev)
2216                 p2p->go_neg_peer = NULL;
2217
2218         dev->wps_method = WPS_NOT_READY;
2219         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2220         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2221
2222         /* Check if after_scan_tx is for this peer. If so free it */
2223         if (p2p->after_scan_tx &&
2224             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2225                 os_free(p2p->after_scan_tx);
2226                 p2p->after_scan_tx = NULL;
2227         }
2228
2229         return 0;
2230 }
2231
2232
2233 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2234 {
2235         os_free(p2p->cfg->dev_name);
2236         if (dev_name) {
2237                 p2p->cfg->dev_name = os_strdup(dev_name);
2238                 if (p2p->cfg->dev_name == NULL)
2239                         return -1;
2240         } else
2241                 p2p->cfg->dev_name = NULL;
2242         return 0;
2243 }
2244
2245
2246 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2247 {
2248         os_free(p2p->cfg->manufacturer);
2249         p2p->cfg->manufacturer = NULL;
2250         if (manufacturer) {
2251                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2252                 if (p2p->cfg->manufacturer == NULL)
2253                         return -1;
2254         }
2255
2256         return 0;
2257 }
2258
2259
2260 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2261 {
2262         os_free(p2p->cfg->model_name);
2263         p2p->cfg->model_name = NULL;
2264         if (model_name) {
2265                 p2p->cfg->model_name = os_strdup(model_name);
2266                 if (p2p->cfg->model_name == NULL)
2267                         return -1;
2268         }
2269
2270         return 0;
2271 }
2272
2273
2274 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2275 {
2276         os_free(p2p->cfg->model_number);
2277         p2p->cfg->model_number = NULL;
2278         if (model_number) {
2279                 p2p->cfg->model_number = os_strdup(model_number);
2280                 if (p2p->cfg->model_number == NULL)
2281                         return -1;
2282         }
2283
2284         return 0;
2285 }
2286
2287
2288 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2289 {
2290         os_free(p2p->cfg->serial_number);
2291         p2p->cfg->serial_number = NULL;
2292         if (serial_number) {
2293                 p2p->cfg->serial_number = os_strdup(serial_number);
2294                 if (p2p->cfg->serial_number == NULL)
2295                         return -1;
2296         }
2297
2298         return 0;
2299 }
2300
2301
2302 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2303 {
2304         p2p->cfg->config_methods = config_methods;
2305 }
2306
2307
2308 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2309 {
2310         os_memcpy(p2p->cfg->uuid, uuid, 16);
2311 }
2312
2313
2314 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2315 {
2316         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2317         return 0;
2318 }
2319
2320
2321 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2322                           size_t num_dev_types)
2323 {
2324         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2325                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2326         p2p->cfg->num_sec_dev_types = num_dev_types;
2327         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2328         return 0;
2329 }
2330
2331
2332 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2333 {
2334         int i;
2335
2336         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2337                 wpabuf_free(p2p->wps_vendor_ext[i]);
2338                 p2p->wps_vendor_ext[i] = NULL;
2339         }
2340 }
2341
2342
2343 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2344                                  const struct wpabuf *vendor_ext)
2345 {
2346         int i;
2347
2348         if (vendor_ext == NULL)
2349                 return -1;
2350
2351         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2352                 if (p2p->wps_vendor_ext[i] == NULL)
2353                         break;
2354         }
2355         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2356                 return -1;
2357
2358         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2359         if (p2p->wps_vendor_ext[i] == NULL)
2360                 return -1;
2361
2362         return 0;
2363 }
2364
2365
2366 int p2p_set_country(struct p2p_data *p2p, const char *country)
2367 {
2368         os_memcpy(p2p->cfg->country, country, 3);
2369         return 0;
2370 }
2371
2372
2373 void p2p_continue_find(struct p2p_data *p2p)
2374 {
2375         struct p2p_device *dev;
2376         p2p_set_state(p2p, P2P_SEARCH);
2377         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2378                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2379                         if (p2p_start_sd(p2p, dev) == 0)
2380                                 return;
2381                         else
2382                                 break;
2383                 } else if (dev->req_config_methods &&
2384                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2385                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2386                                 "pending Provision Discovery Request to "
2387                                 MACSTR " (config methods 0x%x)",
2388                                 MAC2STR(dev->info.p2p_device_addr),
2389                                 dev->req_config_methods);
2390                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2391                                 return;
2392                 }
2393         }
2394
2395         p2p_listen_in_find(p2p);
2396 }
2397
2398
2399 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2400 {
2401         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2402                 "P2P: Service Discovery Query TX callback: success=%d",
2403                 success);
2404         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2405
2406         if (!success) {
2407                 if (p2p->sd_peer) {
2408                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2409                         p2p->sd_peer = NULL;
2410                 }
2411                 p2p_continue_find(p2p);
2412                 return;
2413         }
2414
2415         if (p2p->sd_peer == NULL) {
2416                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2417                         "P2P: No SD peer entry known");
2418                 p2p_continue_find(p2p);
2419                 return;
2420         }
2421
2422         /* Wait for response from the peer */
2423         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2424         p2p_set_timeout(p2p, 0, 200000);
2425 }
2426
2427
2428 /**
2429  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2430  * @p2p: P2P module context from p2p_init()
2431  */
2432 static void p2p_retry_pd(struct p2p_data *p2p)
2433 {
2434         struct p2p_device *dev;
2435
2436         if (p2p->state != P2P_IDLE)
2437                 return;
2438
2439         /*
2440          * Retry the prov disc req attempt only for the peer that the user had
2441          * requested for and provided a join has not been initiated on it
2442          * in the meantime.
2443          */
2444
2445         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2446                 if (os_memcmp(p2p->pending_pd_devaddr,
2447                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2448                         continue;
2449                 if (!dev->req_config_methods)
2450                         continue;
2451                 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2452                         continue;
2453
2454                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2455                         "pending Provision Discovery Request to "
2456                         MACSTR " (config methods 0x%x)",
2457                         MAC2STR(dev->info.p2p_device_addr),
2458                         dev->req_config_methods);
2459                 p2p_send_prov_disc_req(p2p, dev, 0, 0);
2460                 return;
2461         }
2462 }
2463
2464
2465 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2466 {
2467         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2468                 "P2P: Provision Discovery Request TX callback: success=%d",
2469                 success);
2470
2471         /*
2472          * Postpone resetting the pending action state till after we actually
2473          * time out. This allows us to take some action like notifying any
2474          * interested parties about no response to the request.
2475          *
2476          * When the timer (below) goes off we check in IDLE, SEARCH, or
2477          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2478          * requests in, if this was still pending and then raise notification.
2479          */
2480
2481         if (!success) {
2482                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2483
2484                 if (p2p->state != P2P_IDLE)
2485                         p2p_continue_find(p2p);
2486                 else if (p2p->user_initiated_pd) {
2487                         p2p->pending_action_state = P2P_PENDING_PD;
2488                         p2p_set_timeout(p2p, 0, 300000);
2489                 }
2490                 return;
2491         }
2492
2493         /*
2494          * This postponing, of resetting pending_action_state, needs to be
2495          * done only for user initiated PD requests and not internal ones.
2496          */
2497         if (p2p->user_initiated_pd)
2498                 p2p->pending_action_state = P2P_PENDING_PD;
2499         else
2500                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2501
2502         /* Wait for response from the peer */
2503         if (p2p->state == P2P_SEARCH)
2504                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2505         p2p_set_timeout(p2p, 0, 200000);
2506 }
2507
2508
2509 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2510                          int level, const u8 *ies, size_t ies_len)
2511 {
2512         p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2513
2514         if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2515             os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2516             == 0) {
2517                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2518                         "P2P: Found GO Negotiation peer - try to start GO "
2519                         "negotiation");
2520                 p2p_connect_send(p2p, p2p->go_neg_peer);
2521                 return 1;
2522         }
2523
2524         return 0;
2525 }
2526
2527
2528 void p2p_scan_res_handled(struct p2p_data *p2p)
2529 {
2530         if (!p2p->p2p_scan_running) {
2531                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2532                         "running, but scan results received");
2533         }
2534         p2p->p2p_scan_running = 0;
2535         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2536
2537         if (p2p_run_after_scan(p2p))
2538                 return;
2539         if (p2p->state == P2P_SEARCH)
2540                 p2p_continue_find(p2p);
2541 }
2542
2543
2544 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2545 {
2546         u8 *len = p2p_buf_add_ie_hdr(ies);
2547         p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2548         if (dev_id)
2549                 p2p_buf_add_device_id(ies, dev_id);
2550         if (p2p->cfg->reg_class && p2p->cfg->channel)
2551                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2552                                            p2p->cfg->reg_class,
2553                                            p2p->cfg->channel);
2554         if (p2p->ext_listen_interval)
2555                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2556                                               p2p->ext_listen_interval);
2557         /* TODO: p2p_buf_add_operating_channel() if GO */
2558         p2p_buf_update_ie_hdr(ies, len);
2559 }
2560
2561
2562 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2563 {
2564         return 100;
2565 }
2566
2567
2568 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2569 {
2570         return p2p_attr_text(p2p_ie, buf, end);
2571 }
2572
2573
2574 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2575 {
2576         struct p2p_device *dev = p2p->go_neg_peer;
2577
2578         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2579                 "P2P: GO Negotiation Request TX callback: success=%d",
2580                 success);
2581
2582         if (dev == NULL) {
2583                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2584                         "P2P: No pending GO Negotiation");
2585                 return;
2586         }
2587
2588         if (success) {
2589                 dev->go_neg_req_sent++;
2590                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2591                         p2p_set_state(p2p, P2P_IDLE);
2592                         return;
2593                 }
2594         }
2595
2596         if (!success &&
2597             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2598             !is_zero_ether_addr(dev->member_in_go_dev)) {
2599                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2600                         "P2P: Peer " MACSTR " did not acknowledge request - "
2601                         "try to use device discoverability through its GO",
2602                         MAC2STR(dev->info.p2p_device_addr));
2603                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2604                 p2p_send_dev_disc_req(p2p, dev);
2605                 return;
2606         }
2607
2608         /*
2609          * Use P2P find, if needed, to find the other device from its listen
2610          * channel.
2611          */
2612         p2p_set_state(p2p, P2P_CONNECT);
2613         p2p_set_timeout(p2p, 0, 100000);
2614 }
2615
2616
2617 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2618 {
2619         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2620                 "P2P: GO Negotiation Response TX callback: success=%d",
2621                 success);
2622         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2623                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2624                         "P2P: Ignore TX callback event - GO Negotiation is "
2625                         "not running anymore");
2626                 return;
2627         }
2628         p2p_set_state(p2p, P2P_CONNECT);
2629         p2p_set_timeout(p2p, 0, 100000);
2630 }
2631
2632
2633 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2634 {
2635         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2636                 "P2P: GO Negotiation Response (failure) TX callback: "
2637                 "success=%d", success);
2638         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2639                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2640                                   p2p->go_neg_peer->status);
2641         }
2642 }
2643
2644
2645 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2646                                enum p2p_send_action_result result)
2647 {
2648         struct p2p_device *dev;
2649
2650         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2651                 "P2P: GO Negotiation Confirm TX callback: result=%d",
2652                 result);
2653         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2654         if (result == P2P_SEND_ACTION_FAILED) {
2655                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2656                 return;
2657         }
2658         if (result == P2P_SEND_ACTION_NO_ACK) {
2659                 /*
2660                  * It looks like the TX status for GO Negotiation Confirm is
2661                  * often showing failure even when the peer has actually
2662                  * received the frame. Since the peer may change channels
2663                  * immediately after having received the frame, we may not see
2664                  * an Ack for retries, so just dropping a single frame may
2665                  * trigger this. To allow the group formation to succeed if the
2666                  * peer did indeed receive the frame, continue regardless of
2667                  * the TX status.
2668                  */
2669                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2670                         "P2P: Assume GO Negotiation Confirm TX was actually "
2671                         "received by the peer even though Ack was not "
2672                         "reported");
2673         }
2674
2675         dev = p2p->go_neg_peer;
2676         if (dev == NULL)
2677                 return;
2678
2679         p2p_go_complete(p2p, dev);
2680 }
2681
2682
2683 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2684                         const u8 *src, const u8 *bssid,
2685                         enum p2p_send_action_result result)
2686 {
2687         enum p2p_pending_action_state state;
2688         int success;
2689
2690         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2691                 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2692                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2693                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2694                 MAC2STR(bssid), result);
2695         success = result == P2P_SEND_ACTION_SUCCESS;
2696         state = p2p->pending_action_state;
2697         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2698         switch (state) {
2699         case P2P_NO_PENDING_ACTION:
2700                 break;
2701         case P2P_PENDING_GO_NEG_REQUEST:
2702                 p2p_go_neg_req_cb(p2p, success);
2703                 break;
2704         case P2P_PENDING_GO_NEG_RESPONSE:
2705                 p2p_go_neg_resp_cb(p2p, success);
2706                 break;
2707         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2708                 p2p_go_neg_resp_failure_cb(p2p, success);
2709                 break;
2710         case P2P_PENDING_GO_NEG_CONFIRM:
2711                 p2p_go_neg_conf_cb(p2p, result);
2712                 break;
2713         case P2P_PENDING_SD:
2714                 p2p_sd_cb(p2p, success);
2715                 break;
2716         case P2P_PENDING_PD:
2717                 p2p_prov_disc_cb(p2p, success);
2718                 break;
2719         case P2P_PENDING_INVITATION_REQUEST:
2720                 p2p_invitation_req_cb(p2p, success);
2721                 break;
2722         case P2P_PENDING_INVITATION_RESPONSE:
2723                 p2p_invitation_resp_cb(p2p, success);
2724                 break;
2725         case P2P_PENDING_DEV_DISC_REQUEST:
2726                 p2p_dev_disc_req_cb(p2p, success);
2727                 break;
2728         case P2P_PENDING_DEV_DISC_RESPONSE:
2729                 p2p_dev_disc_resp_cb(p2p, success);
2730                 break;
2731         case P2P_PENDING_GO_DISC_REQ:
2732                 p2p_go_disc_req_cb(p2p, success);
2733                 break;
2734         }
2735 }
2736
2737
2738 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2739                    unsigned int duration)
2740 {
2741         if (freq == p2p->pending_client_disc_freq) {
2742                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2743                         "P2P: Client discoverability remain-awake completed");
2744                 p2p->pending_client_disc_freq = 0;
2745                 return;
2746         }
2747
2748         if (freq != p2p->pending_listen_freq) {
2749                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2750                         "P2P: Unexpected listen callback for freq=%u "
2751                         "duration=%u (pending_listen_freq=%u)",
2752                         freq, duration, p2p->pending_listen_freq);
2753                 return;
2754         }
2755
2756         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2757                 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2758                 "callback",
2759                 p2p->pending_listen_sec, p2p->pending_listen_usec,
2760                 p2p->pending_listen_freq);
2761         p2p->in_listen = 1;
2762         p2p->drv_in_listen = freq;
2763         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2764                 /*
2765                  * Add 20 msec extra wait to avoid race condition with driver
2766                  * remain-on-channel end event, i.e., give driver more time to
2767                  * complete the operation before our timeout expires.
2768                  */
2769                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2770                                 p2p->pending_listen_usec + 20000);
2771         }
2772
2773         p2p->pending_listen_freq = 0;
2774 }
2775
2776
2777 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2778 {
2779         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2780                 "state (freq=%u)", freq);
2781         p2p->drv_in_listen = 0;
2782         if (p2p->in_listen)
2783                 return 0; /* Internal timeout will trigger the next step */
2784
2785         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2786                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2787                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2788                                 "P2P: Timeout on sending GO Negotiation "
2789                                 "Request without getting response");
2790                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2791                         return 0;
2792                 }
2793
2794                 p2p_set_state(p2p, P2P_CONNECT);
2795                 p2p_connect_send(p2p, p2p->go_neg_peer);
2796                 return 1;
2797         } else if (p2p->state == P2P_SEARCH) {
2798                 p2p_search(p2p);
2799                 return 1;
2800         }
2801
2802         return 0;
2803 }
2804
2805
2806 static void p2p_timeout_connect(struct p2p_data *p2p)
2807 {
2808         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2809         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2810         p2p_listen_in_find(p2p);
2811 }
2812
2813
2814 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2815 {
2816         if (p2p->go_neg_peer) {
2817                 if (p2p->drv_in_listen) {
2818                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2819                                 "still in Listen state; wait for it to "
2820                                 "complete");
2821                         return;
2822                 }
2823
2824                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2825                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2826                                 "P2P: Timeout on sending GO Negotiation "
2827                                 "Request without getting response");
2828                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2829                         return;
2830                 }
2831
2832                 p2p_set_state(p2p, P2P_CONNECT);
2833                 p2p_connect_send(p2p, p2p->go_neg_peer);
2834         } else
2835                 p2p_set_state(p2p, P2P_IDLE);
2836 }
2837
2838
2839 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2840 {
2841         /*
2842          * TODO: could remain constantly in Listen state for some time if there
2843          * are no other concurrent uses for the radio. For now, go to listen
2844          * state once per second to give other uses a chance to use the radio.
2845          */
2846         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2847         p2p_set_timeout(p2p, 0, 500000);
2848 }
2849
2850
2851 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2852 {
2853         struct p2p_device *dev = p2p->go_neg_peer;
2854
2855         if (dev == NULL) {
2856                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2857                         "P2P: Unknown GO Neg peer - stop GO Neg wait");
2858                 return;
2859         }
2860
2861         dev->wait_count++;
2862         if (dev->wait_count >= 120) {
2863                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2864                         "P2P: Timeout on waiting peer to become ready for GO "
2865                         "Negotiation");
2866                 p2p_go_neg_failed(p2p, dev, -1);
2867                 return;
2868         }
2869
2870         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2871                 "P2P: Go to Listen state while waiting for the peer to become "
2872                 "ready for GO Negotiation");
2873         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2874         p2p_listen_in_find(p2p);
2875 }
2876
2877
2878 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2879 {
2880         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2881                 "P2P: Service Discovery Query timeout");
2882         if (p2p->sd_peer) {
2883                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2884                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2885                 p2p->sd_peer = NULL;
2886         }
2887         p2p_continue_find(p2p);
2888 }
2889
2890
2891 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2892 {
2893         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2894                 "P2P: Provision Discovery Request timeout");
2895         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2896         p2p_continue_find(p2p);
2897 }
2898
2899
2900 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2901 {
2902         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2903
2904         /*
2905          * For user initiated PD requests that we have not gotten any responses
2906          * for while in IDLE state, we retry them a couple of times before
2907          * giving up.
2908          */
2909         if (!p2p->user_initiated_pd)
2910                 return;
2911
2912         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2913                 "P2P: User initiated Provision Discovery Request timeout");
2914
2915         if (p2p->pd_retries) {
2916                 p2p->pd_retries--;
2917                 p2p_retry_pd(p2p);
2918         } else {
2919                 if (p2p->cfg->prov_disc_fail)
2920                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2921                                                  p2p->pending_pd_devaddr,
2922                                                  P2P_PROV_DISC_TIMEOUT);
2923                 p2p_reset_pending_pd(p2p);
2924         }
2925 }
2926
2927
2928 static void p2p_timeout_invite(struct p2p_data *p2p)
2929 {
2930         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2931         p2p_set_state(p2p, P2P_INVITE_LISTEN);
2932         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2933                 /*
2934                  * Better remain on operating channel instead of listen channel
2935                  * when running a group.
2936                  */
2937                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2938                         "active GO role - wait on operating channel");
2939                 p2p_set_timeout(p2p, 0, 100000);
2940                 return;
2941         }
2942         p2p_listen_in_find(p2p);
2943 }
2944
2945
2946 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2947 {
2948         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2949                 p2p_set_state(p2p, P2P_INVITE);
2950                 p2p_invite_send(p2p, p2p->invite_peer,
2951                                 p2p->invite_go_dev_addr);
2952         } else {
2953                 if (p2p->invite_peer) {
2954                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2955                                 "P2P: Invitation Request retry limit reached");
2956                         if (p2p->cfg->invitation_result)
2957                                 p2p->cfg->invitation_result(
2958                                         p2p->cfg->cb_ctx, -1, NULL);
2959                 }
2960                 p2p_set_state(p2p, P2P_IDLE);
2961         }
2962 }
2963
2964
2965 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2966 {
2967         struct p2p_data *p2p = eloop_ctx;
2968
2969         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2970                 p2p_state_txt(p2p->state));
2971
2972         p2p->in_listen = 0;
2973
2974         switch (p2p->state) {
2975         case P2P_IDLE:
2976                 /* Check if we timed out waiting for PD req */
2977                 if (p2p->pending_action_state == P2P_PENDING_PD)
2978                         p2p_timeout_prov_disc_req(p2p);
2979                 break;
2980         case P2P_SEARCH:
2981                 /* Check if we timed out waiting for PD req */
2982                 if (p2p->pending_action_state == P2P_PENDING_PD)
2983                         p2p_timeout_prov_disc_req(p2p);
2984                 p2p_search(p2p);
2985                 break;
2986         case P2P_CONNECT:
2987                 p2p_timeout_connect(p2p);
2988                 break;
2989         case P2P_CONNECT_LISTEN:
2990                 p2p_timeout_connect_listen(p2p);
2991                 break;
2992         case P2P_GO_NEG:
2993                 break;
2994         case P2P_LISTEN_ONLY:
2995                 /* Check if we timed out waiting for PD req */
2996                 if (p2p->pending_action_state == P2P_PENDING_PD)
2997                         p2p_timeout_prov_disc_req(p2p);
2998
2999                 if (p2p->ext_listen_only) {
3000                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3001                                 "P2P: Extended Listen Timing - Listen State "
3002                                 "completed");
3003                         p2p->ext_listen_only = 0;
3004                         p2p_set_state(p2p, P2P_IDLE);
3005                 }
3006                 break;
3007         case P2P_WAIT_PEER_CONNECT:
3008                 p2p_timeout_wait_peer_connect(p2p);
3009                 break;
3010         case P2P_WAIT_PEER_IDLE:
3011                 p2p_timeout_wait_peer_idle(p2p);
3012                 break;
3013         case P2P_SD_DURING_FIND:
3014                 p2p_timeout_sd_during_find(p2p);
3015                 break;
3016         case P2P_PROVISIONING:
3017                 break;
3018         case P2P_PD_DURING_FIND:
3019                 p2p_timeout_prov_disc_during_find(p2p);
3020                 break;
3021         case P2P_INVITE:
3022                 p2p_timeout_invite(p2p);
3023                 break;
3024         case P2P_INVITE_LISTEN:
3025                 p2p_timeout_invite_listen(p2p);
3026                 break;
3027         case P2P_SEARCH_WHEN_READY:
3028                 break;
3029         }
3030 }
3031
3032
3033 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3034 {
3035         struct p2p_device *dev;
3036
3037         dev = p2p_get_device(p2p, peer_addr);
3038         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3039                 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3040         if (dev == NULL) {
3041                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3042                         " unknown", MAC2STR(peer_addr));
3043                 return -1;
3044         }
3045         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3046         dev->flags |= P2P_DEV_USER_REJECTED;
3047         return 0;
3048 }
3049
3050
3051 const char * p2p_wps_method_text(enum p2p_wps_method method)
3052 {
3053         switch (method) {
3054         case WPS_NOT_READY:
3055                 return "not-ready";
3056         case WPS_PIN_DISPLAY:
3057                 return "Display";
3058         case WPS_PIN_KEYPAD:
3059                 return "Keypad";
3060         case WPS_PBC:
3061                 return "PBC";
3062         }
3063
3064         return "??";
3065 }
3066
3067
3068 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3069 {
3070         switch (go_state) {
3071         case UNKNOWN_GO:
3072                 return "unknown";
3073         case LOCAL_GO:
3074                 return "local";
3075         case  REMOTE_GO:
3076                 return "remote";
3077         }
3078
3079         return "??";
3080 }
3081
3082
3083 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3084                                                const u8 *addr, int next)
3085 {
3086         struct p2p_device *dev;
3087
3088         if (addr)
3089                 dev = p2p_get_device(p2p, addr);
3090         else
3091                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3092
3093         if (dev && next) {
3094                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3095                 if (&dev->list == &p2p->devices)
3096                         dev = NULL;
3097         }
3098
3099         if (dev == NULL)
3100                 return NULL;
3101
3102         return &dev->info;
3103 }
3104
3105
3106 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3107                           char *buf, size_t buflen)
3108 {
3109         struct p2p_device *dev;
3110         int res;
3111         char *pos, *end;
3112         struct os_time now;
3113
3114         if (info == NULL)
3115                 return -1;
3116
3117         dev = (struct p2p_device *) (((u8 *) info) -
3118                                      offsetof(struct p2p_device, info));
3119
3120         pos = buf;
3121         end = buf + buflen;
3122
3123         os_get_time(&now);
3124         res = os_snprintf(pos, end - pos,
3125                           "age=%d\n"
3126                           "listen_freq=%d\n"
3127                           "wps_method=%s\n"
3128                           "interface_addr=" MACSTR "\n"
3129                           "member_in_go_dev=" MACSTR "\n"
3130                           "member_in_go_iface=" MACSTR "\n"
3131                           "go_neg_req_sent=%d\n"
3132                           "go_state=%s\n"
3133                           "dialog_token=%u\n"
3134                           "intended_addr=" MACSTR "\n"
3135                           "country=%c%c\n"
3136                           "oper_freq=%d\n"
3137                           "req_config_methods=0x%x\n"
3138                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3139                           "status=%d\n"
3140                           "wait_count=%u\n"
3141                           "invitation_reqs=%u\n",
3142                           (int) (now.sec - dev->last_seen.sec),
3143                           dev->listen_freq,
3144                           p2p_wps_method_text(dev->wps_method),
3145                           MAC2STR(dev->interface_addr),
3146                           MAC2STR(dev->member_in_go_dev),
3147                           MAC2STR(dev->member_in_go_iface),
3148                           dev->go_neg_req_sent,
3149                           p2p_go_state_text(dev->go_state),
3150                           dev->dialog_token,
3151                           MAC2STR(dev->intended_addr),
3152                           dev->country[0] ? dev->country[0] : '_',
3153                           dev->country[1] ? dev->country[1] : '_',
3154                           dev->oper_freq,
3155                           dev->req_config_methods,
3156                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3157                           "[PROBE_REQ_ONLY]" : "",
3158                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3159                           dev->flags & P2P_DEV_NOT_YET_READY ?
3160                           "[NOT_YET_READY]" : "",
3161                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3162                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3163                           "",
3164                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3165                           "[PD_PEER_DISPLAY]" : "",
3166                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3167                           "[PD_PEER_KEYPAD]" : "",
3168                           dev->flags & P2P_DEV_USER_REJECTED ?
3169                           "[USER_REJECTED]" : "",
3170                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3171                           "[PEER_WAITING_RESPONSE]" : "",
3172                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3173                           "[PREFER_PERSISTENT_GROUP]" : "",
3174                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3175                           "[WAIT_GO_NEG_RESPONSE]" : "",
3176                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3177                           "[WAIT_GO_NEG_CONFIRM]" : "",
3178                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3179                           "[GROUP_CLIENT_ONLY]" : "",
3180                           dev->flags & P2P_DEV_FORCE_FREQ ?
3181                           "[FORCE_FREQ]" : "",
3182                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3183                           "[PD_FOR_JOIN]" : "",
3184                           dev->status,
3185                           dev->wait_count,
3186                           dev->invitation_reqs);
3187         if (res < 0 || res >= end - pos)
3188                 return pos - buf;
3189         pos += res;
3190
3191         if (dev->ext_listen_period) {
3192                 res = os_snprintf(pos, end - pos,
3193                                   "ext_listen_period=%u\n"
3194                                   "ext_listen_interval=%u\n",
3195                                   dev->ext_listen_period,
3196                                   dev->ext_listen_interval);
3197                 if (res < 0 || res >= end - pos)
3198                         return pos - buf;
3199                 pos += res;
3200         }
3201
3202         if (dev->oper_ssid_len) {
3203                 res = os_snprintf(pos, end - pos,
3204                                   "oper_ssid=%s\n",
3205                                   wpa_ssid_txt(dev->oper_ssid,
3206                                                dev->oper_ssid_len));
3207                 if (res < 0 || res >= end - pos)
3208                         return pos - buf;
3209                 pos += res;
3210         }
3211
3212         return pos - buf;
3213 }
3214
3215
3216 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3217 {
3218         return p2p_get_device(p2p, addr) != NULL;
3219 }
3220
3221
3222 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3223 {
3224         if (enabled) {
3225                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3226                         "discoverability enabled");
3227                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3228         } else {
3229                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3230                         "discoverability disabled");
3231                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3232         }
3233 }
3234
3235
3236 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3237                                               u32 duration2, u32 interval2)
3238 {
3239         struct wpabuf *req;
3240         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3241         u8 *len;
3242
3243         req = wpabuf_alloc(100);
3244         if (req == NULL)
3245                 return NULL;
3246
3247         if (duration1 || interval1) {
3248                 os_memset(&desc1, 0, sizeof(desc1));
3249                 desc1.count_type = 1;
3250                 desc1.duration = duration1;
3251                 desc1.interval = interval1;
3252                 ptr1 = &desc1;
3253
3254                 if (duration2 || interval2) {
3255                         os_memset(&desc2, 0, sizeof(desc2));
3256                         desc2.count_type = 2;
3257                         desc2.duration = duration2;
3258                         desc2.interval = interval2;
3259                         ptr2 = &desc2;
3260                 }
3261         }
3262
3263         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3264         len = p2p_buf_add_ie_hdr(req);
3265         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3266         p2p_buf_update_ie_hdr(req, len);
3267
3268         return req;
3269 }
3270
3271
3272 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3273                      const u8 *own_interface_addr, unsigned int freq,
3274                      u32 duration1, u32 interval1, u32 duration2,
3275                      u32 interval2)
3276 {
3277         struct wpabuf *req;
3278
3279         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3280                 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3281                 "int1=%u dur2=%u int2=%u",
3282                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3283                 freq, duration1, interval1, duration2, interval2);
3284
3285         req = p2p_build_presence_req(duration1, interval1, duration2,
3286                                      interval2);
3287         if (req == NULL)
3288                 return -1;
3289
3290         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3291         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3292                             go_interface_addr,
3293                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3294                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3295                         "P2P: Failed to send Action frame");
3296         }
3297         wpabuf_free(req);
3298
3299         return 0;
3300 }
3301
3302
3303 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3304                                                size_t noa_len, u8 dialog_token)
3305 {
3306         struct wpabuf *resp;
3307         u8 *len;
3308
3309         resp = wpabuf_alloc(100 + noa_len);
3310         if (resp == NULL)
3311                 return NULL;
3312
3313         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3314         len = p2p_buf_add_ie_hdr(resp);
3315         p2p_buf_add_status(resp, status);
3316         if (noa) {
3317                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3318                 wpabuf_put_le16(resp, noa_len);
3319                 wpabuf_put_data(resp, noa, noa_len);
3320         } else
3321                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3322         p2p_buf_update_ie_hdr(resp, len);
3323
3324         return resp;
3325 }
3326
3327
3328 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3329                                      const u8 *sa, const u8 *data, size_t len,
3330                                      int rx_freq)
3331 {
3332         struct p2p_message msg;
3333         u8 status;
3334         struct wpabuf *resp;
3335         size_t g;
3336         struct p2p_group *group = NULL;
3337         int parsed = 0;
3338         u8 noa[50];
3339         int noa_len;
3340
3341         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3342                 "P2P: Received P2P Action - P2P Presence Request");
3343
3344         for (g = 0; g < p2p->num_groups; g++) {
3345                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3346                               ETH_ALEN) == 0) {
3347                         group = p2p->groups[g];
3348                         break;
3349                 }
3350         }
3351         if (group == NULL) {
3352                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3353                         "P2P: Ignore P2P Presence Request for unknown group "
3354                         MACSTR, MAC2STR(da));
3355                 return;
3356         }
3357
3358         if (p2p_parse(data, len, &msg) < 0) {
3359                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3360                         "P2P: Failed to parse P2P Presence Request");
3361                 status = P2P_SC_FAIL_INVALID_PARAMS;
3362                 goto fail;
3363         }
3364         parsed = 1;
3365
3366         if (msg.noa == NULL) {
3367                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3368                         "P2P: No NoA attribute in P2P Presence Request");
3369                 status = P2P_SC_FAIL_INVALID_PARAMS;
3370                 goto fail;
3371         }
3372
3373         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3374
3375 fail:
3376         if (p2p->cfg->get_noa)
3377                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3378                                             sizeof(noa));
3379         else
3380                 noa_len = -1;
3381         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3382                                        noa_len > 0 ? noa_len : 0,
3383                                        msg.dialog_token);
3384         if (parsed)
3385                 p2p_parse_free(&msg);
3386         if (resp == NULL)
3387                 return;
3388
3389         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3390         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3391                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3392                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3393                         "P2P: Failed to send Action frame");
3394         }
3395         wpabuf_free(resp);
3396 }
3397
3398
3399 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3400                                       const u8 *sa, const u8 *data, size_t len)
3401 {
3402         struct p2p_message msg;
3403
3404         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3405                 "P2P: Received P2P Action - P2P Presence Response");
3406
3407         if (p2p_parse(data, len, &msg) < 0) {
3408                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3409                         "P2P: Failed to parse P2P Presence Response");
3410                 return;
3411         }
3412
3413         if (msg.status == NULL || msg.noa == NULL) {
3414                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3415                         "P2P: No Status or NoA attribute in P2P Presence "
3416                         "Response");
3417                 p2p_parse_free(&msg);
3418                 return;
3419         }
3420
3421         if (*msg.status) {
3422                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3423                         "P2P: P2P Presence Request was rejected: status %u",
3424                         *msg.status);
3425                 p2p_parse_free(&msg);
3426                 return;
3427         }
3428
3429         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3430                 "P2P: P2P Presence Request was accepted");
3431         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3432                     msg.noa, msg.noa_len);
3433         /* TODO: process NoA */
3434         p2p_parse_free(&msg);
3435 }
3436
3437
3438 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3439 {
3440         struct p2p_data *p2p = eloop_ctx;
3441
3442         if (p2p->ext_listen_interval) {
3443                 /* Schedule next extended listen timeout */
3444                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3445                                        p2p->ext_listen_interval_usec,
3446                                        p2p_ext_listen_timeout, p2p, NULL);
3447         }
3448
3449         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3450                 /*
3451                  * This should not really happen, but it looks like the Listen
3452                  * command may fail is something else (e.g., a scan) was
3453                  * running at an inconvenient time. As a workaround, allow new
3454                  * Extended Listen operation to be started.
3455                  */
3456                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3457                         "Extended Listen operation had not been completed - "
3458                         "try again");
3459                 p2p->ext_listen_only = 0;
3460                 p2p_set_state(p2p, P2P_IDLE);
3461         }
3462
3463         if (p2p->state != P2P_IDLE) {
3464                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3465                         "Listen timeout in active state (%s)",
3466                         p2p_state_txt(p2p->state));
3467                 return;
3468         }
3469
3470         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3471         p2p->ext_listen_only = 1;
3472         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3473                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3474                         "Listen state for Extended Listen Timing");
3475                 p2p->ext_listen_only = 0;
3476         }
3477 }
3478
3479
3480 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3481                    unsigned int interval)
3482 {
3483         if (period > 65535 || interval > 65535 || period > interval ||
3484             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3485                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3486                         "P2P: Invalid Extended Listen Timing request: "
3487                         "period=%u interval=%u", period, interval);
3488                 return -1;
3489         }
3490
3491         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3492
3493         if (interval == 0) {
3494                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3495                         "P2P: Disabling Extended Listen Timing");
3496                 p2p->ext_listen_period = 0;
3497                 p2p->ext_listen_interval = 0;
3498                 return 0;
3499         }
3500
3501         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3502                 "P2P: Enabling Extended Listen Timing: period %u msec, "
3503                 "interval %u msec", period, interval);
3504         p2p->ext_listen_period = period;
3505         p2p->ext_listen_interval = interval;
3506         p2p->ext_listen_interval_sec = interval / 1000;
3507         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3508
3509         eloop_register_timeout(p2p->ext_listen_interval_sec,
3510                                p2p->ext_listen_interval_usec,
3511                                p2p_ext_listen_timeout, p2p, NULL);
3512
3513         return 0;
3514 }
3515
3516
3517 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3518                       const u8 *ie, size_t ie_len)
3519 {
3520         struct p2p_message msg;
3521
3522         if (bssid == NULL || ie == NULL)
3523                 return;
3524
3525         os_memset(&msg, 0, sizeof(msg));
3526         if (p2p_parse_ies(ie, ie_len, &msg))
3527                 return;
3528         if (msg.minor_reason_code == NULL)
3529                 return;
3530
3531         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3532                 "P2P: Deauthentication notification BSSID " MACSTR
3533                 " reason_code=%u minor_reason_code=%u",
3534                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3535
3536         p2p_parse_free(&msg);
3537 }
3538
3539
3540 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3541                         const u8 *ie, size_t ie_len)
3542 {
3543         struct p2p_message msg;
3544
3545         if (bssid == NULL || ie == NULL)
3546                 return;
3547
3548         os_memset(&msg, 0, sizeof(msg));
3549         if (p2p_parse_ies(ie, ie_len, &msg))
3550                 return;
3551         if (msg.minor_reason_code == NULL)
3552                 return;
3553
3554         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3555                 "P2P: Disassociation notification BSSID " MACSTR
3556                 " reason_code=%u minor_reason_code=%u",
3557                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3558
3559         p2p_parse_free(&msg);
3560 }
3561
3562
3563 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3564 {
3565         if (enabled) {
3566                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3567                         "Device operations enabled");
3568                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3569         } else {
3570                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3571                         "Device operations disabled");
3572                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3573         }
3574 }
3575
3576
3577 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3578 {
3579         if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3580                 return -1;
3581
3582         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3583                 "reg_class %u channel %u", reg_class, channel);
3584         p2p->cfg->reg_class = reg_class;
3585         p2p->cfg->channel = channel;
3586
3587         return 0;
3588 }
3589
3590
3591 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3592 {
3593         wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3594         if (postfix == NULL) {
3595                 p2p->cfg->ssid_postfix_len = 0;
3596                 return 0;
3597         }
3598         if (len > sizeof(p2p->cfg->ssid_postfix))
3599                 return -1;
3600         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3601         p2p->cfg->ssid_postfix_len = len;
3602         return 0;
3603 }
3604
3605
3606 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3607                          int cfg_op_channel)
3608 {
3609         if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3610             < 0)
3611                 return -1;
3612
3613         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3614                 "reg_class %u channel %u", op_reg_class, op_channel);
3615         p2p->cfg->op_reg_class = op_reg_class;
3616         p2p->cfg->op_channel = op_channel;
3617         p2p->cfg->cfg_op_channel = cfg_op_channel;
3618         return 0;
3619 }
3620
3621
3622 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3623                            u8 *iface_addr)
3624 {
3625         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3626         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3627                 return -1;
3628         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3629         return 0;
3630 }
3631
3632
3633 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3634                            u8 *dev_addr)
3635 {
3636         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3637         if (dev == NULL)
3638                 return -1;
3639         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3640         return 0;
3641 }
3642
3643
3644 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3645 {
3646         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3647         if (is_zero_ether_addr(p2p->peer_filter))
3648                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3649                         "filter");
3650         else
3651                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3652                         "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3653 }
3654
3655
3656 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3657 {
3658         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3659                 enabled ? "enabled" : "disabled");
3660         if (p2p->cross_connect == enabled)
3661                 return;
3662         p2p->cross_connect = enabled;
3663         /* TODO: may need to tear down any action group where we are GO(?) */
3664 }
3665
3666
3667 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3668 {
3669         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3670         if (dev == NULL)
3671                 return -1;
3672         if (dev->oper_freq <= 0)
3673                 return -1;
3674         return dev->oper_freq;
3675 }
3676
3677
3678 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3679 {
3680         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3681                 enabled ? "enabled" : "disabled");
3682         p2p->cfg->p2p_intra_bss = enabled;
3683 }
3684
3685
3686 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3687 {
3688         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3689         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3690 }
3691
3692
3693 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3694                     const u8 *src, const u8 *bssid, const u8 *buf,
3695                     size_t len, unsigned int wait_time)
3696 {
3697         if (p2p->p2p_scan_running) {
3698                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3699                         "frame TX until p2p_scan completes");
3700                 if (p2p->after_scan_tx) {
3701                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3702                                 "previous pending Action frame TX");
3703                         os_free(p2p->after_scan_tx);
3704                 }
3705                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3706                                                len);
3707                 if (p2p->after_scan_tx == NULL)
3708                         return -1;
3709                 p2p->after_scan_tx->freq = freq;
3710                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3711                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3712                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3713                 p2p->after_scan_tx->len = len;
3714                 p2p->after_scan_tx->wait_time = wait_time;
3715                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3716                 return 0;
3717         }
3718
3719         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3720                                      buf, len, wait_time);
3721 }
3722
3723
3724 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3725                            int freq_overall)
3726 {
3727         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3728                 "  5 GHz: %d,  overall: %d", freq_24, freq_5, freq_overall);
3729         p2p->best_freq_24 = freq_24;
3730         p2p->best_freq_5 = freq_5;
3731         p2p->best_freq_overall = freq_overall;
3732 }
3733
3734
3735 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3736 {
3737         if (p2p == NULL || p2p->go_neg_peer == NULL)
3738                 return NULL;
3739         return p2p->go_neg_peer->info.p2p_device_addr;
3740 }
3741
3742
3743 const struct p2p_peer_info *
3744 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3745 {
3746         struct p2p_device *dev;
3747
3748         if (addr) {
3749                 dev = p2p_get_device(p2p, addr);
3750                 if (!dev)
3751                         return NULL;
3752
3753                 if (!next) {
3754                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3755                                 return NULL;
3756
3757                         return &dev->info;
3758                 } else {
3759                         do {
3760                                 dev = dl_list_first(&dev->list,
3761                                                     struct p2p_device,
3762                                                     list);
3763                                 if (&dev->list == &p2p->devices)
3764                                         return NULL;
3765                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3766                 }
3767         } else {
3768                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3769                 if (!dev)
3770                         return NULL;
3771                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3772                         dev = dl_list_first(&dev->list,
3773                                             struct p2p_device,
3774                                             list);
3775                         if (&dev->list == &p2p->devices)
3776                                 return NULL;
3777                 }
3778         }
3779
3780         return &dev->info;
3781 }
3782
3783
3784 int p2p_in_progress(struct p2p_data *p2p)
3785 {
3786         if (p2p == NULL)
3787                 return 0;
3788         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
3789 }