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                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 255                         "P2P: p2p_scan running - delay start of listen state");
 256                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 257                 return 0;
 258         }
 259
 260         ies = p2p_build_probe_resp_ies(p2p);
 261         if (ies == NULL)
 262                 return -1;
 263
 264         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 265                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 266                         "P2P: Failed to start listen mode");
 267                 p2p->pending_listen_freq = 0;
 268                 wpabuf_free(ies);
 269                 return -1;
 270         }
 271         wpabuf_free(ies);
 272
 273         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 274
 275         return 0;
 276 }
 277
 278
 279 static void p2p_device_clear_reported(struct p2p_data *p2p)
 280 {
 281         struct p2p_device *dev;
 282         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 283                 dev->flags &= ~P2P_DEV_REPORTED;
 284 }
 285
 286
 287 /**
 288  * p2p_get_device - Fetch a peer entry
 289  * @p2p: P2P module context from p2p_init()
 290  * @addr: P2P Device Address of the peer
 291  * Returns: Pointer to the device entry or %NULL if not found
 292  */
 293 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 294 {
 295         struct p2p_device *dev;
 296         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 297                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 298                         return dev;
 299         }
 300         return NULL;
 301 }
 302
 303
 304 /**
 305  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 306  * @p2p: P2P module context from p2p_init()
 307  * @addr: P2P Interface Address of the peer
 308  * Returns: Pointer to the device entry or %NULL if not found
 309  */
 310 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 311                                              const u8 *addr)
 312 {
 313         struct p2p_device *dev;
 314         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 315                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 316                         return dev;
 317         }
 318         return NULL;
 319 }
 320
 321
 322 /**
 323  * p2p_create_device - Create a peer entry
 324  * @p2p: P2P module context from p2p_init()
 325  * @addr: P2P Device Address of the peer
 326  * Returns: Pointer to the device entry or %NULL on failure
 327  *
 328  * If there is already an entry for the peer, it will be returned instead of
 329  * creating a new one.
 330  */
 331 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 332                                              const u8 *addr)
 333 {
 334         struct p2p_device *dev, *oldest = NULL;
 335         size_t count = 0;
 336
 337         dev = p2p_get_device(p2p, addr);
 338         if (dev)
 339                 return dev;
 340
 341         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 342                 count++;
 343                 if (oldest == NULL ||
 344                     os_time_before(&dev->last_seen, &oldest->last_seen))
 345                         oldest = dev;
 346         }
 347         if (count + 1 > p2p->cfg->max_peers && oldest) {
 348                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 349                         "P2P: Remove oldest peer entry to make room for a new "
 350                         "peer");
 351                 dl_list_del(&oldest->list);
 352                 p2p_device_free(p2p, oldest);
 353         }
 354
 355         dev = os_zalloc(sizeof(*dev));
 356         if (dev == NULL)
 357                 return NULL;
 358         dl_list_add(&p2p->devices, &dev->list);
 359         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 360
 361         return dev;
 362 }
 363
 364
 365 static void p2p_copy_client_info(struct p2p_device *dev,
 366                                  struct p2p_client_info *cli)
 367 {
 368         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 369         dev->info.device_name[cli->dev_name_len] = '\0';
 370         dev->info.dev_capab = cli->dev_capab;
 371         dev->info.config_methods = cli->config_methods;
 372         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 373         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 374         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 375                   dev->info.wps_sec_dev_type_list_len);
 376 }
 377
 378
 379 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 380                                  const u8 *go_interface_addr, int freq,
 381                                  const u8 *gi, size_t gi_len)
 382 {
 383         struct p2p_group_info info;
 384         size_t c;
 385         struct p2p_device *dev;
 386
 387         if (gi == NULL)
 388                 return 0;
 389
 390         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 391                 return -1;
 392
 393         /*
 394          * Clear old data for this group; if the devices are still in the
 395          * group, the information will be restored in the loop following this.
 396          */
 397         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 398                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 399                               ETH_ALEN) == 0) {
 400                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 401                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 402                 }
 403         }
 404
 405         for (c = 0; c < info.num_clients; c++) {
 406                 struct p2p_client_info *cli = &info.client[c];
 407                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 408                               ETH_ALEN) == 0)
 409                         continue; /* ignore our own entry */
 410                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 411                 if (dev) {
 412                         /*
 413                          * Update information only if we have not received this
 414                          * directly from the client.
 415                          */
 416                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 417                                           P2P_DEV_PROBE_REQ_ONLY))
 418                                 p2p_copy_client_info(dev, cli);
 419                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 420                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 421                         }
 422                 } else {
 423                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 424                         if (dev == NULL)
 425                                 continue;
 426                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 427                         p2p_copy_client_info(dev, cli);
 428                         dev->oper_freq = freq;
 429                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 430                                             dev->info.p2p_device_addr,
 431                                             &dev->info, 1);
 432                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 433                 }
 434
 435                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 436                           ETH_ALEN);
 437                 os_get_time(&dev->last_seen);
 438                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 439                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 440                           ETH_ALEN);
 441         }
 442
 443         return 0;
 444 }
 445
 446
 447 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
 448                               const struct p2p_message *msg)
 449 {
 450         os_memcpy(dev->info.device_name, msg->device_name,
 451                   sizeof(dev->info.device_name));
 452
 453         if (msg->manufacturer &&
 454             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 455                 os_memset(dev->info.manufacturer, 0,
 456                           sizeof(dev->info.manufacturer));
 457                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 458                           msg->manufacturer_len);
 459         }
 460
 461         if (msg->model_name &&
 462             msg->model_name_len < sizeof(dev->info.model_name)) {
 463                 os_memset(dev->info.model_name, 0,
 464                           sizeof(dev->info.model_name));
 465                 os_memcpy(dev->info.model_name, msg->model_name,
 466                           msg->model_name_len);
 467         }
 468
 469         if (msg->model_number &&
 470             msg->model_number_len < sizeof(dev->info.model_number)) {
 471                 os_memset(dev->info.model_number, 0,
 472                           sizeof(dev->info.model_number));
 473                 os_memcpy(dev->info.model_number, msg->model_number,
 474                           msg->model_number_len);
 475         }
 476
 477         if (msg->serial_number &&
 478             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 479                 os_memset(dev->info.serial_number, 0,
 480                           sizeof(dev->info.serial_number));
 481                 os_memcpy(dev->info.serial_number, msg->serial_number,
 482                           msg->serial_number_len);
 483         }
 484
 485         if (msg->pri_dev_type)
 486                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 487                           sizeof(dev->info.pri_dev_type));
 488         else if (msg->wps_pri_dev_type)
 489                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 490                           sizeof(dev->info.pri_dev_type));
 491
 492         if (msg->wps_sec_dev_type_list) {
 493                 os_memcpy(dev->info.wps_sec_dev_type_list,
 494                           msg->wps_sec_dev_type_list,
 495                           msg->wps_sec_dev_type_list_len);
 496                 dev->info.wps_sec_dev_type_list_len =
 497                         msg->wps_sec_dev_type_list_len;
 498         }
 499
 500         if (msg->capability) {
 501                 dev->info.dev_capab = msg->capability[0];
 502                 dev->info.group_capab = msg->capability[1];
 503         }
 504
 505         if (msg->ext_listen_timing) {
 506                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 507                 dev->ext_listen_interval =
 508                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 509         }
 510
 511         if (!probe_req) {
 512                 dev->info.config_methods = msg->config_methods ?
 513                         msg->config_methods : msg->wps_config_methods;
 514         }
 515 }
 516
 517
 518 /**
 519  * p2p_add_device - Add peer entries based on scan results
 520  * @p2p: P2P module context from p2p_init()
 521  * @addr: Source address of Beacon or Probe Response frame (may be either
 522  *      P2P Device Address or P2P Interface Address)
 523  * @level: Signal level (signal strength of the received frame from the peer)
 524  * @freq: Frequency on which the Beacon or Probe Response frame was received
 525  * @ies: IEs from the Beacon or Probe Response frame
 526  * @ies_len: Length of ies buffer in octets
 527  * Returns: 0 on success, -1 on failure
 528  *
 529  * If the scan result is for a GO, the clients in the group will also be added
 530  * to the peer table. This function can also be used with some other frames
 531  * like Provision Discovery Request that contains P2P Capability and P2P Device
 532  * Info attributes.
 533  */
 534 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
 535                    const u8 *ies, size_t ies_len)
 536 {
 537         struct p2p_device *dev;
 538         struct p2p_message msg;
 539         const u8 *p2p_dev_addr;
 540         int i;
 541
 542         os_memset(&msg, 0, sizeof(msg));
 543         if (p2p_parse_ies(ies, ies_len, &msg)) {
 544                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 545                         "P2P: Failed to parse P2P IE for a device entry");
 546                 p2p_parse_free(&msg);
 547                 return -1;
 548         }
 549
 550         if (msg.p2p_device_addr)
 551                 p2p_dev_addr = msg.p2p_device_addr;
 552         else if (msg.device_id)
 553                 p2p_dev_addr = msg.device_id;
 554         else {
 555                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 556                         "P2P: Ignore scan data without P2P Device Info or "
 557                         "P2P Device Id");
 558                 p2p_parse_free(&msg);
 559                 return -1;
 560         }
 561
 562         if (!is_zero_ether_addr(p2p->peer_filter) &&
 563             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 564                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
 565                         "filter for " MACSTR " due to peer filter",
 566                         MAC2STR(p2p_dev_addr));
 567                 return 0;
 568         }
 569
 570         dev = p2p_create_device(p2p, p2p_dev_addr);
 571         if (dev == NULL) {
 572                 p2p_parse_free(&msg);
 573                 return -1;
 574         }
 575         os_get_time(&dev->last_seen);
 576         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 577
 578         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 579                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 580         if (msg.ssid &&
 581             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 582              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 583              != 0)) {
 584                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 585                 dev->oper_ssid_len = msg.ssid[1];
 586         }
 587
 588         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 589             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 590                 int ds_freq;
 591                 if (*msg.ds_params == 14)
 592                         ds_freq = 2484;
 593                 else
 594                         ds_freq = 2407 + *msg.ds_params * 5;
 595                 if (freq != ds_freq) {
 596                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 597                                 "P2P: Update Listen frequency based on DS "
 598                                 "Parameter Set IE: %d -> %d MHz",
 599                                 freq, ds_freq);
 600                         freq = ds_freq;
 601                 }
 602         }
 603
 604         if (dev->listen_freq && dev->listen_freq != freq) {
 605                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 606                         "P2P: Update Listen frequency based on scan "
 607                         "results (" MACSTR " %d -> %d MHz (DS param %d)",
 608                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 609                         freq, msg.ds_params ? *msg.ds_params : -1);
 610         }
 611         dev->listen_freq = freq;
 612         if (msg.group_info)
 613                 dev->oper_freq = freq;
 614         dev->info.level = level;
 615
 616         p2p_copy_wps_info(dev, 0, &msg);
 617
 618         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 619                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 620                 dev->info.wps_vendor_ext[i] = NULL;
 621         }
 622
 623         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 624                 if (msg.wps_vendor_ext[i] == NULL)
 625                         break;
 626                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 627                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 628                 if (dev->info.wps_vendor_ext[i] == NULL)
 629                         break;
 630         }
 631
 632         p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
 633                               msg.group_info_len);
 634
 635         p2p_parse_free(&msg);
 636
 637         if (p2p_pending_sd_req(p2p, dev))
 638                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 639
 640         if (dev->flags & P2P_DEV_REPORTED)
 641                 return 0;
 642
 643         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 644                 "P2P: Peer found with Listen frequency %d MHz", freq);
 645         if (dev->flags & P2P_DEV_USER_REJECTED) {
 646                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 647                         "P2P: Do not report rejected device");
 648                 return 0;
 649         }
 650
 651         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 652                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 653         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 654
 655         return 0;
 656 }
 657
 658
 659 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 660 {
 661         int i;
 662
 663         if (p2p->go_neg_peer == dev) {
 664                 /*
 665                  * If GO Negotiation is in progress, report that it has failed.
 666                  */
 667                 p2p_go_neg_failed(p2p, dev, -1);
 668                 p2p->go_neg_peer = NULL;
 669         }
 670         if (p2p->invite_peer == dev)
 671                 p2p->invite_peer = NULL;
 672         if (p2p->sd_peer == dev)
 673                 p2p->sd_peer = NULL;
 674         if (p2p->pending_client_disc_go == dev)
 675                 p2p->pending_client_disc_go = NULL;
 676
 677         /* dev_lost() device, but only if it was previously dev_found() */
 678         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 679                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 680                                    dev->info.p2p_device_addr);
 681
 682         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 683                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 684                 dev->info.wps_vendor_ext[i] = NULL;
 685         }
 686
 687         os_free(dev);
 688 }
 689
 690
 691 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 692 {
 693         struct p2p_channels *c;
 694         struct p2p_reg_class *cla;
 695         size_t cl, ch;
 696         int found = 0;
 697         u8 reg_class;
 698         u8 channel;
 699         int freq;
 700
 701         c = &p2p->cfg->channels;
 702         for (cl = 0; cl < c->reg_classes; cl++) {
 703                 cla = &c->reg_class[cl];
 704                 if (cla->reg_class != p2p->last_prog_scan_class)
 705                         continue;
 706                 for (ch = 0; ch < cla->channels; ch++) {
 707                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 708                                 found = 1;
 709                                 break;
 710                         }
 711                 }
 712                 if (found)
 713                         break;
 714         }
 715
 716         if (!found) {
 717                 /* Start from beginning */
 718                 reg_class = c->reg_class[0].reg_class;
 719                 channel = c->reg_class[0].channel[0];
 720         } else {
 721                 /* Pick the next channel */
 722                 ch++;
 723                 if (ch == cla->channels) {
 724                         cl++;
 725                         if (cl == c->reg_classes)
 726                                 cl = 0;
 727                         ch = 0;
 728                 }
 729                 reg_class = c->reg_class[cl].reg_class;
 730                 channel = c->reg_class[cl].channel[ch];
 731         }
 732
 733         freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
 734         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
 735                 "channel: reg_class %u channel %u -> %d MHz",
 736                 reg_class, channel, freq);
 737         p2p->last_prog_scan_class = reg_class;
 738         p2p->last_prog_scan_chan = channel;
 739
 740         if (freq == 2412 || freq == 2437 || freq == 2462)
 741                 return 0; /* No need to add social channels */
 742         return freq;
 743 }
 744
 745
 746 static void p2p_search(struct p2p_data *p2p)
 747 {
 748         int freq = 0;
 749         enum p2p_scan_type type;
 750
 751         if (p2p->drv_in_listen) {
 752                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
 753                         "in Listen state - wait for it to end before "
 754                         "continuing");
 755                 return;
 756         }
 757         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 758
 759         if (p2p->go_neg_peer) {
 760                 /*
 761                  * Only scan the known listen frequency of the peer
 762                  * during GO Negotiation start.
 763                  */
 764                 freq = p2p->go_neg_peer->listen_freq;
 765                 if (freq <= 0)
 766                         freq = p2p->go_neg_peer->oper_freq;
 767                 type = P2P_SCAN_SPECIFIC;
 768                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 769                         "for freq %u (GO Neg)", freq);
 770         } else if (p2p->invite_peer) {
 771                 /*
 772                  * Only scan the known listen frequency of the peer
 773                  * during Invite start.
 774                  */
 775                 freq = p2p->invite_peer->listen_freq;
 776                 if (freq <= 0)
 777                         freq = p2p->invite_peer->oper_freq;
 778                 type = P2P_SCAN_SPECIFIC;
 779                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 780                         "for freq %u (Invite)", freq);
 781         } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 782                    (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 783                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 784                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 785                         "(+ freq %u)", freq);
 786         } else {
 787                 type = P2P_SCAN_SOCIAL;
 788                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
 789         }
 790
 791         if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 792                                p2p->num_req_dev_types, p2p->req_dev_types) < 0)
 793         {
 794                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 795                         "P2P: Scan request failed");
 796                 p2p_continue_find(p2p);
 797         } else {
 798                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 799                 p2p->p2p_scan_running = 1;
 800                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 801                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 802                                        p2p, NULL);
 803         }
 804 }
 805
 806
 807 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 808 {
 809         struct p2p_data *p2p = eloop_ctx;
 810         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
 811         p2p_stop_find(p2p);
 812 }
 813
 814
 815 static int p2p_run_after_scan(struct p2p_data *p2p)
 816 {
 817         struct p2p_device *dev;
 818         enum p2p_after_scan op;
 819
 820         if (p2p->after_scan_tx) {
 821                 /* TODO: schedule p2p_run_after_scan to be called from TX
 822                  * status callback(?) */
 823                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
 824                         "Action frame at p2p_scan completion");
 825                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 826                                       p2p->after_scan_tx->freq,
 827                                       p2p->after_scan_tx->dst,
 828                                       p2p->after_scan_tx->src,
 829                                       p2p->after_scan_tx->bssid,
 830                                       (u8 *) (p2p->after_scan_tx + 1),
 831                                       p2p->after_scan_tx->len,
 832                                       p2p->after_scan_tx->wait_time);
 833                 os_free(p2p->after_scan_tx);
 834                 p2p->after_scan_tx = NULL;
 835                 return 1;
 836         }
 837
 838         op = p2p->start_after_scan;
 839         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 840         switch (op) {
 841         case P2P_AFTER_SCAN_NOTHING:
 842                 break;
 843         case P2P_AFTER_SCAN_LISTEN:
 844                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 845                         "requested Listen state");
 846                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 847                            p2p->pending_listen_usec / 1000);
 848                 return 1;
 849         case P2P_AFTER_SCAN_CONNECT:
 850                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 851                         "requested connect with " MACSTR,
 852                         MAC2STR(p2p->after_scan_peer));
 853                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 854                 if (dev == NULL) {
 855                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
 856                                 "known anymore");
 857                         break;
 858                 }
 859                 p2p_connect_send(p2p, dev);
 860                 return 1;
 861         }
 862
 863         return 0;
 864 }
 865
 866
 867 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 868 {
 869         struct p2p_data *p2p = eloop_ctx;
 870         int running;
 871         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
 872                 "(running=%d)", p2p->p2p_scan_running);
 873         running = p2p->p2p_scan_running;
 874         /* Make sure we recover from missed scan results callback */
 875         p2p->p2p_scan_running = 0;
 876
 877         if (running)
 878                 p2p_run_after_scan(p2p);
 879 }
 880
 881
 882 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 883 {
 884         p2p->num_req_dev_types = 0;
 885         os_free(p2p->req_dev_types);
 886         p2p->req_dev_types = NULL;
 887 }
 888
 889
 890 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 891              enum p2p_discovery_type type,
 892              unsigned int num_req_dev_types, const u8 *req_dev_types)
 893 {
 894         int res;
 895
 896         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
 897                 type);
 898         if (p2p->p2p_scan_running) {
 899                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
 900                         "already running");
 901         }
 902
 903         p2p_free_req_dev_types(p2p);
 904         if (req_dev_types && num_req_dev_types) {
 905                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 906                                                WPS_DEV_TYPE_LEN);
 907                 if (p2p->req_dev_types == NULL)
 908                         return -1;
 909                 os_memcpy(p2p->req_dev_types, req_dev_types,
 910                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 911                 p2p->num_req_dev_types = num_req_dev_types;
 912         }
 913
 914         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 915         p2p_clear_timeout(p2p);
 916         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 917         p2p->find_type = type;
 918         p2p_device_clear_reported(p2p);
 919         p2p_set_state(p2p, P2P_SEARCH);
 920         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 921         p2p->last_p2p_find_timeout = timeout;
 922         if (timeout)
 923                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
 924                                        p2p, NULL);
 925         switch (type) {
 926         case P2P_FIND_START_WITH_FULL:
 927         case P2P_FIND_PROGRESSIVE:
 928                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
 929                                          p2p->num_req_dev_types,
 930                                          p2p->req_dev_types);
 931                 break;
 932         case P2P_FIND_ONLY_SOCIAL:
 933                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
 934                                          p2p->num_req_dev_types,
 935                                          p2p->req_dev_types);
 936                 break;
 937         default:
 938                 return -1;
 939         }
 940
 941         if (res == 0) {
 942                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 943                 p2p->p2p_scan_running = 1;
 944                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 945                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 946                                        p2p, NULL);
 947         } else if (res == 1) {
 948                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
 949                         "p2p_scan at this point - will try again after "
 950                         "previous scan completes");
 951                 res = 0;
 952                 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
 953                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 954         } else {
 955                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
 956                         "p2p_scan");
 957                 p2p_set_state(p2p, P2P_IDLE);
 958                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 959         }
 960
 961         return res;
 962 }
 963
 964
 965 int p2p_other_scan_completed(struct p2p_data *p2p)
 966 {
 967         if (p2p->state != P2P_SEARCH_WHEN_READY)
 968                 return 0;
 969         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
 970                 "now that previous scan was completed");
 971         if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
 972                      p2p->num_req_dev_types, p2p->req_dev_types) < 0)
 973                 return 0;
 974         return 1;
 975 }
 976
 977
 978 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
 979 {
 980         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
 981         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 982         p2p_clear_timeout(p2p);
 983         p2p_set_state(p2p, P2P_IDLE);
 984         p2p_free_req_dev_types(p2p);
 985         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 986         p2p->go_neg_peer = NULL;
 987         p2p->sd_peer = NULL;
 988         p2p->invite_peer = NULL;
 989         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
 990                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
 991                         "since we are on correct channel for response");
 992                 return;
 993         }
 994         if (p2p->drv_in_listen) {
 995                 /*
 996                  * The driver may not deliver callback to p2p_listen_end()
 997                  * when the operation gets canceled, so clear the internal
 998                  * variable that is tracking driver state.
 999                  */
1000                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1001                         "drv_in_listen (%d)", p2p->drv_in_listen);
1002                 p2p->drv_in_listen = 0;
1003         }
1004         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1005 }
1006
1007
1008 void p2p_stop_find(struct p2p_data *p2p)
1009 {
1010         p2p_stop_find_for_freq(p2p, 0);
1011 }
1012
1013
1014 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
1015 {
1016         if (force_freq) {
1017                 u8 op_reg_class, op_channel;
1018                 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1019                                         &op_reg_class, &op_channel) < 0) {
1020                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1021                                 "P2P: Unsupported frequency %u MHz",
1022                                 force_freq);
1023                         return -1;
1024                 }
1025                 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
1026                                            op_channel)) {
1027                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1028                                 "P2P: Frequency %u MHz (oper_class %u "
1029                                 "channel %u) not allowed for P2P",
1030                                 force_freq, op_reg_class, op_channel);
1031                         return -1;
1032                 }
1033                 p2p->op_reg_class = op_reg_class;
1034                 p2p->op_channel = op_channel;
1035                 p2p->channels.reg_classes = 1;
1036                 p2p->channels.reg_class[0].channels = 1;
1037                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1038                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1039         } else {
1040                 u8 op_reg_class, op_channel;
1041
1042                 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1043                     p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1044                     p2p_freq_to_channel(p2p->cfg->country,
1045                                         p2p->best_freq_overall,
1046                                         &op_reg_class, &op_channel) == 0) {
1047                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1048                                 "P2P: Select best overall channel as "
1049                                 "operating channel preference");
1050                         p2p->op_reg_class = op_reg_class;
1051                         p2p->op_channel = op_channel;
1052                 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1053                            p2p_supported_freq(p2p, p2p->best_freq_5) &&
1054                            p2p_freq_to_channel(p2p->cfg->country,
1055                                                p2p->best_freq_5,
1056                                                &op_reg_class, &op_channel) ==
1057                            0) {
1058                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1059                                 "P2P: Select best 5 GHz channel as "
1060                                 "operating channel preference");
1061                         p2p->op_reg_class = op_reg_class;
1062                         p2p->op_channel = op_channel;
1063                 } else if (!p2p->cfg->cfg_op_channel &&
1064                            p2p->best_freq_24 > 0 &&
1065                            p2p_supported_freq(p2p, p2p->best_freq_24) &&
1066                            p2p_freq_to_channel(p2p->cfg->country,
1067                                                p2p->best_freq_24,
1068                                                &op_reg_class, &op_channel) ==
1069                            0) {
1070                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1071                                 "P2P: Select best 2.4 GHz channel as "
1072                                 "operating channel preference");
1073                         p2p->op_reg_class = op_reg_class;
1074                         p2p->op_channel = op_channel;
1075                 } else {
1076                         p2p->op_reg_class = p2p->cfg->op_reg_class;
1077                         p2p->op_channel = p2p->cfg->op_channel;
1078                 }
1079
1080                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1081                           sizeof(struct p2p_channels));
1082         }
1083         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1084                 "P2P: Own preference for operation channel: "
1085                 "Operating Class %u Channel %u%s",
1086                 p2p->op_reg_class, p2p->op_channel,
1087                 force_freq ? " (forced)" : "");
1088
1089         return 0;
1090 }
1091
1092
1093 static void p2p_set_dev_persistent(struct p2p_device *dev,
1094                                    int persistent_group)
1095 {
1096         switch (persistent_group) {
1097         case 0:
1098                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1099                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1100                 break;
1101         case 1:
1102                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1103                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1104                 break;
1105         case 2:
1106                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1107                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1108                 break;
1109         }
1110 }
1111
1112
1113 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1114                 enum p2p_wps_method wps_method,
1115                 int go_intent, const u8 *own_interface_addr,
1116                 unsigned int force_freq, int persistent_group)
1117 {
1118         struct p2p_device *dev;
1119
1120         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1121                 "P2P: Request to start group negotiation - peer=" MACSTR
1122                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1123                 " wps_method=%d persistent_group=%d",
1124                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1125                 wps_method, persistent_group);
1126
1127         if (p2p_prepare_channel(p2p, force_freq) < 0)
1128                 return -1;
1129
1130         p2p->ssid_set = 0;
1131         dev = p2p_get_device(p2p, peer_addr);
1132         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1133                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1134                         "P2P: Cannot connect to unknown P2P Device " MACSTR,
1135                         MAC2STR(peer_addr));
1136                 return -1;
1137         }
1138
1139         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1140                 if (!(dev->info.dev_capab &
1141                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1142                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1143                                 "P2P: Cannot connect to P2P Device " MACSTR
1144                                 " that is in a group and is not discoverable",
1145                                 MAC2STR(peer_addr));
1146                         return -1;
1147                 }
1148                 if (dev->oper_freq <= 0) {
1149                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1150                                 "P2P: Cannot connect to P2P Device " MACSTR
1151                                 " with incomplete information",
1152                                 MAC2STR(peer_addr));
1153                         return -1;
1154                 }
1155
1156                 /*
1157                  * First, try to connect directly. If the peer does not
1158                  * acknowledge frames, assume it is sleeping and use device
1159                  * discoverability via the GO at that point.
1160                  */
1161         }
1162
1163         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1164         dev->flags &= ~P2P_DEV_USER_REJECTED;
1165         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1166         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1167         dev->connect_reqs = 0;
1168         dev->go_neg_req_sent = 0;
1169         dev->go_state = UNKNOWN_GO;
1170         p2p_set_dev_persistent(dev, persistent_group);
1171         p2p->go_intent = go_intent;
1172         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1173
1174         if (p2p->state != P2P_IDLE)
1175                 p2p_stop_find(p2p);
1176
1177         if (p2p->after_scan_tx) {
1178                 /*
1179                  * We need to drop the pending frame to avoid issues with the
1180                  * new GO Negotiation, e.g., when the pending frame was from a
1181                  * previous attempt at starting a GO Negotiation.
1182                  */
1183                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1184                         "previous pending Action frame TX that was waiting "
1185                         "for p2p_scan completion");
1186                 os_free(p2p->after_scan_tx);
1187                 p2p->after_scan_tx = NULL;
1188         }
1189
1190         dev->wps_method = wps_method;
1191         dev->status = P2P_SC_SUCCESS;
1192
1193         if (force_freq)
1194                 dev->flags |= P2P_DEV_FORCE_FREQ;
1195         else
1196                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1197
1198         if (p2p->p2p_scan_running) {
1199                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1200                         "P2P: p2p_scan running - delay connect send");
1201                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1202                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1203                 return 0;
1204         }
1205         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1206
1207         return p2p_connect_send(p2p, dev);
1208 }
1209
1210
1211 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1212                   enum p2p_wps_method wps_method,
1213                   int go_intent, const u8 *own_interface_addr,
1214                   unsigned int force_freq, int persistent_group)
1215 {
1216         struct p2p_device *dev;
1217
1218         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1219                 "P2P: Request to authorize group negotiation - peer=" MACSTR
1220                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1221                 " wps_method=%d  persistent_group=%d",
1222                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1223                 wps_method, persistent_group);
1224
1225         if (p2p_prepare_channel(p2p, force_freq) < 0)
1226                 return -1;
1227
1228         dev = p2p_get_device(p2p, peer_addr);
1229         if (dev == NULL) {
1230                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1231                         "P2P: Cannot authorize unknown P2P Device " MACSTR,
1232                         MAC2STR(peer_addr));
1233                 return -1;
1234         }
1235
1236         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1237         dev->flags &= ~P2P_DEV_USER_REJECTED;
1238         dev->go_neg_req_sent = 0;
1239         dev->go_state = UNKNOWN_GO;
1240         p2p_set_dev_persistent(dev, persistent_group);
1241         p2p->go_intent = go_intent;
1242         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1243
1244         dev->wps_method = wps_method;
1245         dev->status = P2P_SC_SUCCESS;
1246
1247         if (force_freq)
1248                 dev->flags |= P2P_DEV_FORCE_FREQ;
1249         else
1250                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1251
1252         return 0;
1253 }
1254
1255
1256 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1257                       struct p2p_device *dev, struct p2p_message *msg)
1258 {
1259         os_get_time(&dev->last_seen);
1260
1261         p2p_copy_wps_info(dev, 0, msg);
1262
1263         if (msg->listen_channel) {
1264                 int freq;
1265                 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1266                                            msg->listen_channel[3],
1267                                            msg->listen_channel[4]);
1268                 if (freq < 0) {
1269                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1270                                 "P2P: Unknown peer Listen channel: "
1271                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1272                                 msg->listen_channel[0],
1273                                 msg->listen_channel[1],
1274                                 msg->listen_channel[2],
1275                                 msg->listen_channel[3],
1276                                 msg->listen_channel[4]);
1277                 } else {
1278                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1279                                 "peer " MACSTR " Listen channel: %u -> %u MHz",
1280                                 MAC2STR(dev->info.p2p_device_addr),
1281                                 dev->listen_freq, freq);
1282                         dev->listen_freq = freq;
1283                 }
1284         }
1285
1286         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1287                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1288                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1289                         "P2P: Completed device entry based on data from "
1290                         "GO Negotiation Request");
1291         } else {
1292                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1293                         "P2P: Created device entry based on GO Neg Req: "
1294                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1295                         "listen_freq=%d",
1296                         MAC2STR(dev->info.p2p_device_addr),
1297                         dev->info.dev_capab, dev->info.group_capab,
1298                         dev->info.device_name, dev->listen_freq);
1299         }
1300
1301         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1302
1303         if (dev->flags & P2P_DEV_USER_REJECTED) {
1304                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1305                         "P2P: Do not report rejected device");
1306                 return;
1307         }
1308
1309         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1310                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1311         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1312 }
1313
1314
1315 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1316 {
1317         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1318         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1319         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1320                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1321         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1322 }
1323
1324
1325 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1326 {
1327         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1328         p2p_random(params->passphrase, 8);
1329         return 0;
1330 }
1331
1332
1333 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1334 {
1335         struct p2p_go_neg_results res;
1336         int go = peer->go_state == LOCAL_GO;
1337         struct p2p_channels intersection;
1338         int freqs;
1339         size_t i, j;
1340
1341         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1342                 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1343                 "GO)", MAC2STR(peer->info.p2p_device_addr),
1344                 go ? "local end" : "peer");
1345
1346         os_memset(&res, 0, sizeof(res));
1347         res.role_go = go;
1348         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1349         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1350         res.wps_method = peer->wps_method;
1351         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1352                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1353                         res.persistent_group = 2;
1354                 else
1355                         res.persistent_group = 1;
1356         }
1357
1358         if (go) {
1359                 /* Setup AP mode for WPS provisioning */
1360                 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1361                                                p2p->op_reg_class,
1362                                                p2p->op_channel);
1363                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1364                 res.ssid_len = p2p->ssid_len;
1365                 p2p_random(res.passphrase, 8);
1366         } else {
1367                 res.freq = peer->oper_freq;
1368                 if (p2p->ssid_len) {
1369                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1370                         res.ssid_len = p2p->ssid_len;
1371                 }
1372         }
1373
1374         p2p_channels_intersect(&p2p->channels, &peer->channels,
1375                                &intersection);
1376         freqs = 0;
1377         for (i = 0; i < intersection.reg_classes; i++) {
1378                 struct p2p_reg_class *c = &intersection.reg_class[i];
1379                 if (freqs + 1 == P2P_MAX_CHANNELS)
1380                         break;
1381                 for (j = 0; j < c->channels; j++) {
1382                         int freq;
1383                         if (freqs + 1 == P2P_MAX_CHANNELS)
1384                                 break;
1385                         freq = p2p_channel_to_freq(peer->country, c->reg_class,
1386                                                    c->channel[j]);
1387                         if (freq < 0)
1388                                 continue;
1389                         res.freq_list[freqs++] = freq;
1390                 }
1391         }
1392
1393         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1394
1395         p2p_clear_timeout(p2p);
1396         p2p->ssid_set = 0;
1397         peer->go_neg_req_sent = 0;
1398         peer->wps_method = WPS_NOT_READY;
1399
1400         p2p_set_state(p2p, P2P_PROVISIONING);
1401         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1402 }
1403
1404
1405 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1406                               const u8 *data, size_t len, int rx_freq)
1407 {
1408         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1409                 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1410         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1411
1412         if (len < 1)
1413                 return;
1414
1415         switch (data[0]) {
1416         case P2P_GO_NEG_REQ:
1417                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1418                 break;
1419         case P2P_GO_NEG_RESP:
1420                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1421                 break;
1422         case P2P_GO_NEG_CONF:
1423                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1424                 break;
1425         case P2P_INVITATION_REQ:
1426                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1427                                            rx_freq);
1428                 break;
1429         case P2P_INVITATION_RESP:
1430                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1431                 break;
1432         case P2P_PROV_DISC_REQ:
1433                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1434                 break;
1435         case P2P_PROV_DISC_RESP:
1436                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1437                 break;
1438         case P2P_DEV_DISC_REQ:
1439                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1440                 break;
1441         case P2P_DEV_DISC_RESP:
1442                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1443                 break;
1444         default:
1445                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1446                         "P2P: Unsupported P2P Public Action frame type %d",
1447                         data[0]);
1448                 break;
1449         }
1450 }
1451
1452
1453 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1454                                  const u8 *sa, const u8 *bssid, const u8 *data,
1455                                  size_t len, int freq)
1456 {
1457         if (len < 1)
1458                 return;
1459
1460         switch (data[0]) {
1461         case WLAN_PA_VENDOR_SPECIFIC:
1462                 data++;
1463                 len--;
1464                 if (len < 3)
1465                         return;
1466                 if (WPA_GET_BE24(data) != OUI_WFA)
1467                         return;
1468
1469                 data += 3;
1470                 len -= 3;
1471                 if (len < 1)
1472                         return;
1473
1474                 if (*data != P2P_OUI_TYPE)
1475                         return;
1476
1477                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1478                 break;
1479         case WLAN_PA_GAS_INITIAL_REQ:
1480                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1481                 break;
1482         case WLAN_PA_GAS_INITIAL_RESP:
1483                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1484                 break;
1485         case WLAN_PA_GAS_COMEBACK_REQ:
1486                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1487                 break;
1488         case WLAN_PA_GAS_COMEBACK_RESP:
1489                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1490                 break;
1491         }
1492 }
1493
1494
1495 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1496                    const u8 *bssid, u8 category,
1497                    const u8 *data, size_t len, int freq)
1498 {
1499         if (category == WLAN_ACTION_PUBLIC) {
1500                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1501                 return;
1502         }
1503
1504         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1505                 return;
1506
1507         if (len < 4)
1508                 return;
1509
1510         if (WPA_GET_BE24(data) != OUI_WFA)
1511                 return;
1512         data += 3;
1513         len -= 3;
1514
1515         if (*data != P2P_OUI_TYPE)
1516                 return;
1517         data++;
1518         len--;
1519
1520         /* P2P action frame */
1521         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1522                 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1523         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1524
1525         if (len < 1)
1526                 return;
1527         switch (data[0]) {
1528         case P2P_NOA:
1529                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1530                         "P2P: Received P2P Action - Notice of Absence");
1531                 /* TODO */
1532                 break;
1533         case P2P_PRESENCE_REQ:
1534                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1535                 break;
1536         case P2P_PRESENCE_RESP:
1537                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1538                 break;
1539         case P2P_GO_DISC_REQ:
1540                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1541                 break;
1542         default:
1543                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1544                         "P2P: Received P2P Action - unknown type %u", data[0]);
1545                 break;
1546         }
1547 }
1548
1549
1550 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1551 {
1552         struct p2p_data *p2p = eloop_ctx;
1553         if (p2p->go_neg_peer == NULL)
1554                 return;
1555         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1556         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1557         p2p_connect_send(p2p, p2p->go_neg_peer);
1558 }
1559
1560
1561 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1562 {
1563         struct p2p_data *p2p = eloop_ctx;
1564         if (p2p->invite_peer == NULL)
1565                 return;
1566         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1567         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1568 }
1569
1570
1571 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1572                                        const u8 *ie, size_t ie_len)
1573 {
1574         struct p2p_message msg;
1575         struct p2p_device *dev;
1576
1577         os_memset(&msg, 0, sizeof(msg));
1578         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1579         {
1580                 p2p_parse_free(&msg);
1581                 return; /* not a P2P probe */
1582         }
1583
1584         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1585             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1586             != 0) {
1587                 /* The Probe Request is not part of P2P Device Discovery. It is
1588                  * not known whether the source address of the frame is the P2P
1589                  * Device Address or P2P Interface Address. Do not add a new
1590                  * peer entry based on this frames.
1591                  */
1592                 p2p_parse_free(&msg);
1593                 return;
1594         }
1595
1596         dev = p2p_get_device(p2p, addr);
1597         if (dev) {
1598                 if (dev->country[0] == 0 && msg.listen_channel)
1599                         os_memcpy(dev->country, msg.listen_channel, 3);
1600                 os_get_time(&dev->last_seen);
1601                 p2p_parse_free(&msg);
1602                 return; /* already known */
1603         }
1604
1605         dev = p2p_create_device(p2p, addr);
1606         if (dev == NULL) {
1607                 p2p_parse_free(&msg);
1608                 return;
1609         }
1610
1611         os_get_time(&dev->last_seen);
1612         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1613
1614         if (msg.listen_channel) {
1615                 os_memcpy(dev->country, msg.listen_channel, 3);
1616                 dev->listen_freq = p2p_channel_to_freq(dev->country,
1617                                                        msg.listen_channel[3],
1618                                                        msg.listen_channel[4]);
1619         }
1620
1621         p2p_copy_wps_info(dev, 1, &msg);
1622
1623         p2p_parse_free(&msg);
1624
1625         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1626                 "P2P: Created device entry based on Probe Req: " MACSTR
1627                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1628                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1629                 dev->info.group_capab, dev->info.device_name,
1630                 dev->listen_freq);
1631 }
1632
1633
1634 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1635                                                 const u8 *addr,
1636                                                 struct p2p_message *msg)
1637 {
1638         struct p2p_device *dev;
1639
1640         dev = p2p_get_device(p2p, addr);
1641         if (dev) {
1642                 os_get_time(&dev->last_seen);
1643                 return dev; /* already known */
1644         }
1645
1646         dev = p2p_create_device(p2p, addr);
1647         if (dev == NULL)
1648                 return NULL;
1649
1650         p2p_add_dev_info(p2p, addr, dev, msg);
1651
1652         return dev;
1653 }
1654
1655
1656 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1657 {
1658         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1659                 return 1;
1660         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1661             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1662             WPA_GET_BE16(&req_dev_type[6]) == 0)
1663                 return 1; /* Category match with wildcard OUI/sub-category */
1664         return 0;
1665 }
1666
1667
1668 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1669                         size_t num_req_dev_type)
1670 {
1671         size_t i;
1672         for (i = 0; i < num_req_dev_type; i++) {
1673                 if (dev_type_match(dev_type, req_dev_type[i]))
1674                         return 1;
1675         }
1676         return 0;
1677 }
1678
1679
1680 /**
1681  * p2p_match_dev_type - Match local device type with requested type
1682  * @p2p: P2P module context from p2p_init()
1683  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1684  * Returns: 1 on match, 0 on mismatch
1685  *
1686  * This function can be used to match the Requested Device Type attribute in
1687  * WPS IE with the local device types for deciding whether to reply to a Probe
1688  * Request frame.
1689  */
1690 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1691 {
1692         struct wps_parse_attr attr;
1693         size_t i;
1694
1695         if (wps_parse_msg(wps, &attr))
1696                 return 1; /* assume no Requested Device Type attributes */
1697
1698         if (attr.num_req_dev_type == 0)
1699                 return 1; /* no Requested Device Type attributes -> match */
1700
1701         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1702                                 attr.num_req_dev_type))
1703                 return 1; /* Own Primary Device Type matches */
1704
1705         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1706                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1707                                         attr.req_dev_type,
1708                                         attr.num_req_dev_type))
1709                 return 1; /* Own Secondary Device Type matches */
1710
1711         /* No matching device type found */
1712         return 0;
1713 }
1714
1715
1716 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1717 {
1718         struct wpabuf *buf;
1719         u8 *len;
1720
1721         buf = wpabuf_alloc(1000);
1722         if (buf == NULL)
1723                 return NULL;
1724
1725         p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1726
1727         /* P2P IE */
1728         len = p2p_buf_add_ie_hdr(buf);
1729         p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1730         if (p2p->ext_listen_interval)
1731                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1732                                               p2p->ext_listen_interval);
1733         p2p_buf_add_device_info(buf, p2p, NULL);
1734         p2p_buf_update_ie_hdr(buf, len);
1735
1736         return buf;
1737 }
1738
1739
1740 static int is_11b(u8 rate)
1741 {
1742         return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1743 }
1744
1745
1746 static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1747 {
1748         int num_11b = 0, num_others = 0;
1749         int i;
1750
1751         if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1752                 return 0;
1753
1754         for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1755                 if (is_11b(elems->supp_rates[i]))
1756                         num_11b++;
1757                 else
1758                         num_others++;
1759         }
1760
1761         for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1762              i++) {
1763                 if (is_11b(elems->ext_supp_rates[i]))
1764                         num_11b++;
1765                 else
1766                         num_others++;
1767         }
1768
1769         return num_11b > 0 && num_others == 0;
1770 }
1771
1772
1773 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
1774                             const u8 *dst, const u8 *bssid, const u8 *ie,
1775                             size_t ie_len)
1776 {
1777         struct ieee802_11_elems elems;
1778         struct wpabuf *buf;
1779         struct ieee80211_mgmt *resp;
1780         struct p2p_message msg;
1781         struct wpabuf *ies;
1782
1783         if (!p2p->in_listen || !p2p->drv_in_listen) {
1784                 /* not in Listen state - ignore Probe Request */
1785                 return;
1786         }
1787
1788         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1789             ParseFailed) {
1790                 /* Ignore invalid Probe Request frames */
1791                 return;
1792         }
1793
1794         if (elems.p2p == NULL) {
1795                 /* not a P2P probe - ignore it */
1796                 return;
1797         }
1798
1799         if (dst && !is_broadcast_ether_addr(dst) &&
1800             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1801                 /* Not sent to the broadcast address or our P2P Device Address
1802                  */
1803                 return;
1804         }
1805
1806         if (bssid && !is_broadcast_ether_addr(bssid)) {
1807                 /* Not sent to the Wildcard BSSID */
1808                 return;
1809         }
1810
1811         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1812             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1813             0) {
1814                 /* not using P2P Wildcard SSID - ignore */
1815                 return;
1816         }
1817
1818         if (supp_rates_11b_only(&elems)) {
1819                 /* Indicates support for 11b rates only */
1820                 return;
1821         }
1822
1823         os_memset(&msg, 0, sizeof(msg));
1824         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1825                 /* Could not parse P2P attributes */
1826                 return;
1827         }
1828
1829         if (msg.device_id &&
1830             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN != 0)) {
1831                 /* Device ID did not match */
1832                 p2p_parse_free(&msg);
1833                 return;
1834         }
1835
1836         /* Check Requested Device Type match */
1837         if (msg.wps_attributes &&
1838             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
1839                 /* No match with Requested Device Type */
1840                 p2p_parse_free(&msg);
1841                 return;
1842         }
1843         p2p_parse_free(&msg);
1844
1845         if (!p2p->cfg->send_probe_resp)
1846                 return; /* Response generated elsewhere */
1847
1848         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1849                 "P2P: Reply to P2P Probe Request in Listen state");
1850
1851         /*
1852          * We do not really have a specific BSS that this frame is advertising,
1853          * so build a frame that has some information in valid format. This is
1854          * really only used for discovery purposes, not to learn exact BSS
1855          * parameters.
1856          */
1857         ies = p2p_build_probe_resp_ies(p2p);
1858         if (ies == NULL)
1859                 return;
1860
1861         buf = wpabuf_alloc(200 + wpabuf_len(ies));
1862         if (buf == NULL) {
1863                 wpabuf_free(ies);
1864                 return;
1865         }
1866
1867         resp = NULL;
1868         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1869
1870         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1871                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
1872         os_memcpy(resp->da, addr, ETH_ALEN);
1873         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1874         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1875         resp->u.probe_resp.beacon_int = host_to_le16(100);
1876         /* hardware or low-level driver will setup seq_ctrl and timestamp */
1877         resp->u.probe_resp.capab_info =
1878                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1879                              WLAN_CAPABILITY_PRIVACY |
1880                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
1881
1882         wpabuf_put_u8(buf, WLAN_EID_SSID);
1883         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1884         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1885
1886         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1887         wpabuf_put_u8(buf, 8);
1888         wpabuf_put_u8(buf, (60 / 5) | 0x80);
1889         wpabuf_put_u8(buf, 90 / 5);
1890         wpabuf_put_u8(buf, (120 / 5) | 0x80);
1891         wpabuf_put_u8(buf, 180 / 5);
1892         wpabuf_put_u8(buf, (240 / 5) | 0x80);
1893         wpabuf_put_u8(buf, 360 / 5);
1894         wpabuf_put_u8(buf, 480 / 5);
1895         wpabuf_put_u8(buf, 540 / 5);
1896
1897         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1898         wpabuf_put_u8(buf, 1);
1899         wpabuf_put_u8(buf, p2p->cfg->channel);
1900
1901         wpabuf_put_buf(buf, ies);
1902         wpabuf_free(ies);
1903
1904         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1905
1906         wpabuf_free(buf);
1907 }
1908
1909
1910 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1911                      const u8 *bssid, const u8 *ie, size_t ie_len)
1912 {
1913         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1914
1915         p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
1916
1917         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1918             p2p->go_neg_peer &&
1919             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1920             == 0) {
1921                 /* Received a Probe Request from GO Negotiation peer */
1922                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1923                         "P2P: Found GO Negotiation peer - try to start GO "
1924                         "negotiation from timeout");
1925                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1926                 return 1;
1927         }
1928
1929         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1930             p2p->invite_peer &&
1931             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1932             == 0) {
1933                 /* Received a Probe Request from Invite peer */
1934                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1935                         "P2P: Found Invite peer - try to start Invite from "
1936                         "timeout");
1937                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1938                 return 1;
1939         }
1940
1941         return 0;
1942 }
1943
1944
1945 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1946                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
1947 {
1948         struct wpabuf *tmp;
1949         u8 *lpos;
1950         size_t tmplen;
1951         int res;
1952         u8 group_capab;
1953
1954         if (p2p_ie == NULL)
1955                 return 0; /* WLAN AP is not a P2P manager */
1956
1957         /*
1958          * (Re)Association Request - P2P IE
1959          * P2P Capability attribute (shall be present)
1960          * P2P Interface attribute (present if concurrent device and
1961          *      P2P Management is enabled)
1962          */
1963         tmp = wpabuf_alloc(200);
1964         if (tmp == NULL)
1965                 return -1;
1966
1967         lpos = p2p_buf_add_ie_hdr(tmp);
1968         group_capab = 0;
1969         if (p2p->num_groups > 0) {
1970                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1971                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1972                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1973                     p2p->cross_connect)
1974                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1975         }
1976         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1977         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1978             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1979                 p2p_buf_add_p2p_interface(tmp, p2p);
1980         p2p_buf_update_ie_hdr(tmp, lpos);
1981
1982         tmplen = wpabuf_len(tmp);
1983         if (tmplen > len)
1984                 res = -1;
1985         else {
1986                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1987                 res = tmplen;
1988         }
1989         wpabuf_free(tmp);
1990
1991         return res;
1992 }
1993
1994
1995 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1996                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
1997 {
1998         struct wpabuf *tmp;
1999         u8 *lpos;
2000         struct p2p_device *peer;
2001         size_t tmplen;
2002         int res;
2003
2004         if (!p2p_group)
2005                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2006
2007         /*
2008          * (Re)Association Request - P2P IE
2009          * P2P Capability attribute (shall be present)
2010          * Extended Listen Timing (may be present)
2011          * P2P Device Info attribute (shall be present)
2012          */
2013         tmp = wpabuf_alloc(200);
2014         if (tmp == NULL)
2015                 return -1;
2016
2017         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2018
2019         lpos = p2p_buf_add_ie_hdr(tmp);
2020         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2021         if (p2p->ext_listen_interval)
2022                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2023                                               p2p->ext_listen_interval);
2024         p2p_buf_add_device_info(tmp, p2p, peer);
2025         p2p_buf_update_ie_hdr(tmp, lpos);
2026
2027         tmplen = wpabuf_len(tmp);
2028         if (tmplen > len)
2029                 res = -1;
2030         else {
2031                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2032                 res = tmplen;
2033         }
2034         wpabuf_free(tmp);
2035
2036         return res;
2037 }
2038
2039
2040 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2041 {
2042         struct wpabuf *p2p_ie;
2043         int ret;
2044
2045         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2046         if (p2p_ie == NULL)
2047                 return 0;
2048
2049         ret = p2p_attr_text(p2p_ie, buf, end);
2050         wpabuf_free(p2p_ie);
2051         return ret;
2052 }
2053
2054
2055 static void p2p_clear_go_neg(struct p2p_data *p2p)
2056 {
2057         p2p->go_neg_peer = NULL;
2058         p2p_clear_timeout(p2p);
2059         p2p_set_state(p2p, P2P_IDLE);
2060 }
2061
2062
2063 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2064 {
2065         if (p2p->go_neg_peer == NULL) {
2066                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2067                         "P2P: No pending Group Formation - "
2068                         "ignore WPS registration success notification");
2069                 return; /* No pending Group Formation */
2070         }
2071
2072         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2073             0) {
2074                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2075                         "P2P: Ignore WPS registration success notification "
2076                         "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2077                         MAC2STR(mac_addr),
2078                         MAC2STR(p2p->go_neg_peer->intended_addr));
2079                 return; /* Ignore unexpected peer address */
2080         }
2081
2082         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2083                 "P2P: Group Formation completed successfully with " MACSTR,
2084                 MAC2STR(mac_addr));
2085
2086         p2p_clear_go_neg(p2p);
2087 }
2088
2089
2090 void p2p_group_formation_failed(struct p2p_data *p2p)
2091 {
2092         if (p2p->go_neg_peer == NULL) {
2093                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2094                         "P2P: No pending Group Formation - "
2095                         "ignore group formation failure notification");
2096                 return; /* No pending Group Formation */
2097         }
2098
2099         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2100                 "P2P: Group Formation failed with " MACSTR,
2101                 MAC2STR(p2p->go_neg_peer->intended_addr));
2102
2103         p2p_clear_go_neg(p2p);
2104 }
2105
2106
2107 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2108 {
2109         struct p2p_data *p2p;
2110
2111         if (cfg->max_peers < 1)
2112                 return NULL;
2113
2114         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2115         if (p2p == NULL)
2116                 return NULL;
2117         p2p->cfg = (struct p2p_config *) (p2p + 1);
2118         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2119         if (cfg->dev_name)
2120                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2121         if (cfg->manufacturer)
2122                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2123         if (cfg->model_name)
2124                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2125         if (cfg->model_number)
2126                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2127         if (cfg->serial_number)
2128                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2129
2130         p2p->min_disc_int = 1;
2131         p2p->max_disc_int = 3;
2132
2133         os_get_random(&p2p->next_tie_breaker, 1);
2134         p2p->next_tie_breaker &= 0x01;
2135         if (cfg->sd_request)
2136                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2137         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2138         if (cfg->concurrent_operations)
2139                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2140         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2141
2142         dl_list_init(&p2p->devices);
2143
2144         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2145                                p2p_expiration_timeout, p2p, NULL);
2146
2147         return p2p;
2148 }
2149
2150
2151 void p2p_deinit(struct p2p_data *p2p)
2152 {
2153         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2154         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2155         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2156         p2p_flush(p2p);
2157         p2p_free_req_dev_types(p2p);
2158         os_free(p2p->cfg->dev_name);
2159         os_free(p2p->cfg->manufacturer);
2160         os_free(p2p->cfg->model_name);
2161         os_free(p2p->cfg->model_number);
2162         os_free(p2p->cfg->serial_number);
2163         os_free(p2p->groups);
2164         wpabuf_free(p2p->sd_resp);
2165         os_free(p2p->after_scan_tx);
2166         p2p_remove_wps_vendor_extensions(p2p);
2167         os_free(p2p);
2168 }
2169
2170
2171 void p2p_flush(struct p2p_data *p2p)
2172 {
2173         struct p2p_device *dev, *prev;
2174         p2p_clear_timeout(p2p);
2175         p2p_set_state(p2p, P2P_IDLE);
2176         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2177         p2p->go_neg_peer = NULL;
2178         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2179         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2180                               list) {
2181                 dl_list_del(&dev->list);
2182                 p2p_device_free(p2p, dev);
2183         }
2184         p2p_free_sd_queries(p2p);
2185         os_free(p2p->after_scan_tx);
2186         p2p->after_scan_tx = NULL;
2187 }
2188
2189
2190 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2191 {
2192         struct p2p_device *dev;
2193
2194         dev = p2p_get_device(p2p, addr);
2195         if (dev == NULL)
2196                 return -1;
2197
2198         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2199                 MAC2STR(addr));
2200
2201         if (p2p->go_neg_peer == dev)
2202                 p2p->go_neg_peer = NULL;
2203
2204         dev->wps_method = WPS_NOT_READY;
2205         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2206         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2207
2208         /* Check if after_scan_tx is for this peer. If so free it */
2209         if (p2p->after_scan_tx &&
2210             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2211                 os_free(p2p->after_scan_tx);
2212                 p2p->after_scan_tx = NULL;
2213         }
2214
2215         return 0;
2216 }
2217
2218
2219 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2220 {
2221         os_free(p2p->cfg->dev_name);
2222         if (dev_name) {
2223                 p2p->cfg->dev_name = os_strdup(dev_name);
2224                 if (p2p->cfg->dev_name == NULL)
2225                         return -1;
2226         } else
2227                 p2p->cfg->dev_name = NULL;
2228         return 0;
2229 }
2230
2231
2232 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2233 {
2234         os_free(p2p->cfg->manufacturer);
2235         p2p->cfg->manufacturer = NULL;
2236         if (manufacturer) {
2237                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2238                 if (p2p->cfg->manufacturer == NULL)
2239                         return -1;
2240         }
2241
2242         return 0;
2243 }
2244
2245
2246 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2247 {
2248         os_free(p2p->cfg->model_name);
2249         p2p->cfg->model_name = NULL;
2250         if (model_name) {
2251                 p2p->cfg->model_name = os_strdup(model_name);
2252                 if (p2p->cfg->model_name == NULL)
2253                         return -1;
2254         }
2255
2256         return 0;
2257 }
2258
2259
2260 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2261 {
2262         os_free(p2p->cfg->model_number);
2263         p2p->cfg->model_number = NULL;
2264         if (model_number) {
2265                 p2p->cfg->model_number = os_strdup(model_number);
2266                 if (p2p->cfg->model_number == NULL)
2267                         return -1;
2268         }
2269
2270         return 0;
2271 }
2272
2273
2274 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2275 {
2276         os_free(p2p->cfg->serial_number);
2277         p2p->cfg->serial_number = NULL;
2278         if (serial_number) {
2279                 p2p->cfg->serial_number = os_strdup(serial_number);
2280                 if (p2p->cfg->serial_number == NULL)
2281                         return -1;
2282         }
2283
2284         return 0;
2285 }
2286
2287
2288 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2289 {
2290         p2p->cfg->config_methods = config_methods;
2291 }
2292
2293
2294 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2295 {
2296         os_memcpy(p2p->cfg->uuid, uuid, 16);
2297 }
2298
2299
2300 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2301 {
2302         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2303         return 0;
2304 }
2305
2306
2307 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2308                           size_t num_dev_types)
2309 {
2310         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2311                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2312         p2p->cfg->num_sec_dev_types = num_dev_types;
2313         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2314         return 0;
2315 }
2316
2317
2318 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2319 {
2320         int i;
2321
2322         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2323                 wpabuf_free(p2p->wps_vendor_ext[i]);
2324                 p2p->wps_vendor_ext[i] = NULL;
2325         }
2326 }
2327
2328
2329 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2330                                  const struct wpabuf *vendor_ext)
2331 {
2332         int i;
2333
2334         if (vendor_ext == NULL)
2335                 return -1;
2336
2337         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2338                 if (p2p->wps_vendor_ext[i] == NULL)
2339                         break;
2340         }
2341         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2342                 return -1;
2343
2344         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2345         if (p2p->wps_vendor_ext[i] == NULL)
2346                 return -1;
2347
2348         return 0;
2349 }
2350
2351
2352 int p2p_set_country(struct p2p_data *p2p, const char *country)
2353 {
2354         os_memcpy(p2p->cfg->country, country, 3);
2355         return 0;
2356 }
2357
2358
2359 void p2p_continue_find(struct p2p_data *p2p)
2360 {
2361         struct p2p_device *dev;
2362         p2p_set_state(p2p, P2P_SEARCH);
2363         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2364                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2365                         if (p2p_start_sd(p2p, dev) == 0)
2366                                 return;
2367                         else
2368                                 break;
2369                 } else if (dev->req_config_methods &&
2370                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2371                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2372                                 "pending Provision Discovery Request to "
2373                                 MACSTR " (config methods 0x%x)",
2374                                 MAC2STR(dev->info.p2p_device_addr),
2375                                 dev->req_config_methods);
2376                         if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2377                                 return;
2378                 }
2379         }
2380
2381         p2p_listen_in_find(p2p);
2382 }
2383
2384
2385 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2386 {
2387         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2388                 "P2P: Service Discovery Query TX callback: success=%d",
2389                 success);
2390         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2391
2392         if (!success) {
2393                 if (p2p->sd_peer) {
2394                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2395                         p2p->sd_peer = NULL;
2396                 }
2397                 p2p_continue_find(p2p);
2398                 return;
2399         }
2400
2401         if (p2p->sd_peer == NULL) {
2402                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2403                         "P2P: No SD peer entry known");
2404                 p2p_continue_find(p2p);
2405                 return;
2406         }
2407
2408         /* Wait for response from the peer */
2409         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2410         p2p_set_timeout(p2p, 0, 200000);
2411 }
2412
2413
2414 /**
2415  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2416  * @p2p: P2P module context from p2p_init()
2417  */
2418 static void p2p_retry_pd(struct p2p_data *p2p)
2419 {
2420         struct p2p_device *dev;
2421
2422         if (p2p->state != P2P_IDLE)
2423                 return;
2424
2425         /*
2426          * Retry the prov disc req attempt only for the peer that the user had
2427          * requested for and provided a join has not been initiated on it
2428          * in the meantime.
2429          */
2430
2431         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2432                 if (os_memcmp(p2p->pending_pd_devaddr,
2433                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2434                         continue;
2435                 if (!dev->req_config_methods)
2436                         continue;
2437                 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2438                         continue;
2439
2440                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2441                         "pending Provision Discovery Request to "
2442                         MACSTR " (config methods 0x%x)",
2443                         MAC2STR(dev->info.p2p_device_addr),
2444                         dev->req_config_methods);
2445                 p2p_send_prov_disc_req(p2p, dev, 0);
2446                 return;
2447         }
2448 }
2449
2450
2451 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2452 {
2453         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2454                 "P2P: Provision Discovery Request TX callback: success=%d",
2455                 success);
2456
2457         /*
2458          * Postpone resetting the pending action state till after we actually
2459          * time out. This allows us to take some action like notifying any
2460          * interested parties about no response to the request.
2461          *
2462          * When the timer (below) goes off we check in IDLE, SEARCH, or
2463          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2464          * requests in, if this was still pending and then raise notification.
2465          */
2466
2467         if (!success) {
2468                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2469
2470                 if (p2p->state != P2P_IDLE)
2471                         p2p_continue_find(p2p);
2472                 else if (p2p->user_initiated_pd) {
2473                         p2p->pending_action_state = P2P_PENDING_PD;
2474                         p2p_set_timeout(p2p, 0, 300000);
2475                 }
2476                 return;
2477         }
2478
2479         /*
2480          * This postponing, of resetting pending_action_state, needs to be
2481          * done only for user initiated PD requests and not internal ones.
2482          */
2483         if (p2p->user_initiated_pd)
2484                 p2p->pending_action_state = P2P_PENDING_PD;
2485         else
2486                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2487
2488         /* Wait for response from the peer */
2489         if (p2p->state == P2P_SEARCH)
2490                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2491         p2p_set_timeout(p2p, 0, 200000);
2492 }
2493
2494
2495 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2496                          int level, const u8 *ies, size_t ies_len)
2497 {
2498         p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2499
2500         if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2501             os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2502             == 0) {
2503                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2504                         "P2P: Found GO Negotiation peer - try to start GO "
2505                         "negotiation");
2506                 p2p_connect_send(p2p, p2p->go_neg_peer);
2507                 return 1;
2508         }
2509
2510         return 0;
2511 }
2512
2513
2514 void p2p_scan_res_handled(struct p2p_data *p2p)
2515 {
2516         if (!p2p->p2p_scan_running) {
2517                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2518                         "running, but scan results received");
2519         }
2520         p2p->p2p_scan_running = 0;
2521         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2522
2523         if (p2p_run_after_scan(p2p))
2524                 return;
2525         if (p2p->state == P2P_SEARCH)
2526                 p2p_continue_find(p2p);
2527 }
2528
2529
2530 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2531 {
2532         u8 *len = p2p_buf_add_ie_hdr(ies);
2533         p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2534         if (p2p->cfg->reg_class && p2p->cfg->channel)
2535                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2536                                            p2p->cfg->reg_class,
2537                                            p2p->cfg->channel);
2538         if (p2p->ext_listen_interval)
2539                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2540                                               p2p->ext_listen_interval);
2541         /* TODO: p2p_buf_add_operating_channel() if GO */
2542         p2p_buf_update_ie_hdr(ies, len);
2543 }
2544
2545
2546 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2547 {
2548         return 100;
2549 }
2550
2551
2552 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2553 {
2554         return p2p_attr_text(p2p_ie, buf, end);
2555 }
2556
2557
2558 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2559 {
2560         struct p2p_device *dev = p2p->go_neg_peer;
2561
2562         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2563                 "P2P: GO Negotiation Request TX callback: success=%d",
2564                 success);
2565
2566         if (dev == NULL) {
2567                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2568                         "P2P: No pending GO Negotiation");
2569                 return;
2570         }
2571
2572         if (success) {
2573                 dev->go_neg_req_sent++;
2574                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2575                         p2p_set_state(p2p, P2P_IDLE);
2576                         return;
2577                 }
2578         }
2579
2580         if (!success &&
2581             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2582             !is_zero_ether_addr(dev->member_in_go_dev)) {
2583                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2584                         "P2P: Peer " MACSTR " did not acknowledge request - "
2585                         "try to use device discoverability through its GO",
2586                         MAC2STR(dev->info.p2p_device_addr));
2587                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2588                 p2p_send_dev_disc_req(p2p, dev);
2589                 return;
2590         }
2591
2592         /*
2593          * Use P2P find, if needed, to find the other device from its listen
2594          * channel.
2595          */
2596         p2p_set_state(p2p, P2P_CONNECT);
2597         p2p_set_timeout(p2p, 0, 100000);
2598 }
2599
2600
2601 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2602 {
2603         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2604                 "P2P: GO Negotiation Response TX callback: success=%d",
2605                 success);
2606         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2607                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2608                         "P2P: Ignore TX callback event - GO Negotiation is "
2609                         "not running anymore");
2610                 return;
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_failure_cb(struct p2p_data *p2p, int success)
2618 {
2619         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2620                 "P2P: GO Negotiation Response (failure) TX callback: "
2621                 "success=%d", success);
2622         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2623                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2624                                   p2p->go_neg_peer->status);
2625         }
2626 }
2627
2628
2629 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2630                                enum p2p_send_action_result result)
2631 {
2632         struct p2p_device *dev;
2633
2634         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2635                 "P2P: GO Negotiation Confirm TX callback: result=%d",
2636                 result);
2637         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2638         if (result == P2P_SEND_ACTION_FAILED) {
2639                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2640                 return;
2641         }
2642         if (result == P2P_SEND_ACTION_NO_ACK) {
2643                 /*
2644                  * It looks like the TX status for GO Negotiation Confirm is
2645                  * often showing failure even when the peer has actually
2646                  * received the frame. Since the peer may change channels
2647                  * immediately after having received the frame, we may not see
2648                  * an Ack for retries, so just dropping a single frame may
2649                  * trigger this. To allow the group formation to succeed if the
2650                  * peer did indeed receive the frame, continue regardless of
2651                  * the TX status.
2652                  */
2653                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2654                         "P2P: Assume GO Negotiation Confirm TX was actually "
2655                         "received by the peer even though Ack was not "
2656                         "reported");
2657         }
2658
2659         dev = p2p->go_neg_peer;
2660         if (dev == NULL)
2661                 return;
2662
2663         p2p_go_complete(p2p, dev);
2664 }
2665
2666
2667 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2668                         const u8 *src, const u8 *bssid,
2669                         enum p2p_send_action_result result)
2670 {
2671         enum p2p_pending_action_state state;
2672         int success;
2673
2674         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2675                 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2676                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2677                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2678                 MAC2STR(bssid), result);
2679         success = result == P2P_SEND_ACTION_SUCCESS;
2680         state = p2p->pending_action_state;
2681         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2682         switch (state) {
2683         case P2P_NO_PENDING_ACTION:
2684                 break;
2685         case P2P_PENDING_GO_NEG_REQUEST:
2686                 p2p_go_neg_req_cb(p2p, success);
2687                 break;
2688         case P2P_PENDING_GO_NEG_RESPONSE:
2689                 p2p_go_neg_resp_cb(p2p, success);
2690                 break;
2691         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2692                 p2p_go_neg_resp_failure_cb(p2p, success);
2693                 break;
2694         case P2P_PENDING_GO_NEG_CONFIRM:
2695                 p2p_go_neg_conf_cb(p2p, result);
2696                 break;
2697         case P2P_PENDING_SD:
2698                 p2p_sd_cb(p2p, success);
2699                 break;
2700         case P2P_PENDING_PD:
2701                 p2p_prov_disc_cb(p2p, success);
2702                 break;
2703         case P2P_PENDING_INVITATION_REQUEST:
2704                 p2p_invitation_req_cb(p2p, success);
2705                 break;
2706         case P2P_PENDING_INVITATION_RESPONSE:
2707                 p2p_invitation_resp_cb(p2p, success);
2708                 break;
2709         case P2P_PENDING_DEV_DISC_REQUEST:
2710                 p2p_dev_disc_req_cb(p2p, success);
2711                 break;
2712         case P2P_PENDING_DEV_DISC_RESPONSE:
2713                 p2p_dev_disc_resp_cb(p2p, success);
2714                 break;
2715         case P2P_PENDING_GO_DISC_REQ:
2716                 p2p_go_disc_req_cb(p2p, success);
2717                 break;
2718         }
2719 }
2720
2721
2722 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2723                    unsigned int duration)
2724 {
2725         if (freq == p2p->pending_client_disc_freq) {
2726                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2727                         "P2P: Client discoverability remain-awake completed");
2728                 p2p->pending_client_disc_freq = 0;
2729                 return;
2730         }
2731
2732         if (freq != p2p->pending_listen_freq) {
2733                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2734                         "P2P: Unexpected listen callback for freq=%u "
2735                         "duration=%u (pending_listen_freq=%u)",
2736                         freq, duration, p2p->pending_listen_freq);
2737                 return;
2738         }
2739
2740         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2741                 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2742                 "callback",
2743                 p2p->pending_listen_sec, p2p->pending_listen_usec,
2744                 p2p->pending_listen_freq);
2745         p2p->in_listen = 1;
2746         p2p->drv_in_listen = freq;
2747         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2748                 /*
2749                  * Add 20 msec extra wait to avoid race condition with driver
2750                  * remain-on-channel end event, i.e., give driver more time to
2751                  * complete the operation before our timeout expires.
2752                  */
2753                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2754                                 p2p->pending_listen_usec + 20000);
2755         }
2756
2757         p2p->pending_listen_freq = 0;
2758 }
2759
2760
2761 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2762 {
2763         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2764                 "state (freq=%u)", freq);
2765         p2p->drv_in_listen = 0;
2766         if (p2p->in_listen)
2767                 return 0; /* Internal timeout will trigger the next step */
2768
2769         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2770                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2771                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2772                                 "P2P: Timeout on sending GO Negotiation "
2773                                 "Request without getting response");
2774                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2775                         return 0;
2776                 }
2777
2778                 p2p_set_state(p2p, P2P_CONNECT);
2779                 p2p_connect_send(p2p, p2p->go_neg_peer);
2780                 return 1;
2781         } else if (p2p->state == P2P_SEARCH) {
2782                 p2p_search(p2p);
2783                 return 1;
2784         }
2785
2786         return 0;
2787 }
2788
2789
2790 static void p2p_timeout_connect(struct p2p_data *p2p)
2791 {
2792         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2793         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2794         p2p_listen_in_find(p2p);
2795 }
2796
2797
2798 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2799 {
2800         if (p2p->go_neg_peer) {
2801                 if (p2p->drv_in_listen) {
2802                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2803                                 "still in Listen state; wait for it to "
2804                                 "complete");
2805                         return;
2806                 }
2807
2808                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2809                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2810                                 "P2P: Timeout on sending GO Negotiation "
2811                                 "Request without getting response");
2812                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2813                         return;
2814                 }
2815
2816                 p2p_set_state(p2p, P2P_CONNECT);
2817                 p2p_connect_send(p2p, p2p->go_neg_peer);
2818         } else
2819                 p2p_set_state(p2p, P2P_IDLE);
2820 }
2821
2822
2823 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2824 {
2825         /*
2826          * TODO: could remain constantly in Listen state for some time if there
2827          * are no other concurrent uses for the radio. For now, go to listen
2828          * state once per second to give other uses a chance to use the radio.
2829          */
2830         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2831         p2p_set_timeout(p2p, 1, 0);
2832 }
2833
2834
2835 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2836 {
2837         struct p2p_device *dev = p2p->go_neg_peer;
2838
2839         if (dev == NULL) {
2840                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2841                         "P2P: Unknown GO Neg peer - stop GO Neg wait");
2842                 return;
2843         }
2844
2845         dev->wait_count++;
2846         if (dev->wait_count >= 120) {
2847                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2848                         "P2P: Timeout on waiting peer to become ready for GO "
2849                         "Negotiation");
2850                 p2p_go_neg_failed(p2p, dev, -1);
2851                 return;
2852         }
2853
2854         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2855                 "P2P: Go to Listen state while waiting for the peer to become "
2856                 "ready for GO Negotiation");
2857         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2858         p2p_listen_in_find(p2p);
2859 }
2860
2861
2862 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2863 {
2864         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2865                 "P2P: Service Discovery Query timeout");
2866         if (p2p->sd_peer) {
2867                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2868                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2869                 p2p->sd_peer = NULL;
2870         }
2871         p2p_continue_find(p2p);
2872 }
2873
2874
2875 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2876 {
2877         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2878                 "P2P: Provision Discovery Request timeout");
2879         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2880         p2p_continue_find(p2p);
2881 }
2882
2883
2884 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2885 {
2886         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2887
2888         /*
2889          * For user initiated PD requests that we have not gotten any responses
2890          * for while in IDLE state, we retry them a couple of times before
2891          * giving up.
2892          */
2893         if (!p2p->user_initiated_pd)
2894                 return;
2895
2896         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2897                 "P2P: User initiated Provision Discovery Request timeout");
2898
2899         if (p2p->pd_retries) {
2900                 p2p->pd_retries--;
2901                 p2p_retry_pd(p2p);
2902         } else {
2903                 if (p2p->cfg->prov_disc_fail)
2904                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2905                                                  p2p->pending_pd_devaddr,
2906                                                  P2P_PROV_DISC_TIMEOUT);
2907                 p2p_reset_pending_pd(p2p);
2908         }
2909 }
2910
2911
2912 static void p2p_timeout_invite(struct p2p_data *p2p)
2913 {
2914         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2915         p2p_set_state(p2p, P2P_INVITE_LISTEN);
2916         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2917                 /*
2918                  * Better remain on operating channel instead of listen channel
2919                  * when running a group.
2920                  */
2921                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2922                         "active GO role - wait on operating channel");
2923                 p2p_set_timeout(p2p, 0, 100000);
2924                 return;
2925         }
2926         p2p_listen_in_find(p2p);
2927 }
2928
2929
2930 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2931 {
2932         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2933                 p2p_set_state(p2p, P2P_INVITE);
2934                 p2p_invite_send(p2p, p2p->invite_peer,
2935                                 p2p->invite_go_dev_addr);
2936         } else {
2937                 if (p2p->invite_peer) {
2938                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2939                                 "P2P: Invitation Request retry limit reached");
2940                         if (p2p->cfg->invitation_result)
2941                                 p2p->cfg->invitation_result(
2942                                         p2p->cfg->cb_ctx, -1, NULL);
2943                 }
2944                 p2p_set_state(p2p, P2P_IDLE);
2945         }
2946 }
2947
2948
2949 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2950 {
2951         struct p2p_data *p2p = eloop_ctx;
2952
2953         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2954                 p2p_state_txt(p2p->state));
2955
2956         p2p->in_listen = 0;
2957
2958         switch (p2p->state) {
2959         case P2P_IDLE:
2960                 /* Check if we timed out waiting for PD req */
2961                 if (p2p->pending_action_state == P2P_PENDING_PD)
2962                         p2p_timeout_prov_disc_req(p2p);
2963                 break;
2964         case P2P_SEARCH:
2965                 /* Check if we timed out waiting for PD req */
2966                 if (p2p->pending_action_state == P2P_PENDING_PD)
2967                         p2p_timeout_prov_disc_req(p2p);
2968                 p2p_search(p2p);
2969                 break;
2970         case P2P_CONNECT:
2971                 p2p_timeout_connect(p2p);
2972                 break;
2973         case P2P_CONNECT_LISTEN:
2974                 p2p_timeout_connect_listen(p2p);
2975                 break;
2976         case P2P_GO_NEG:
2977                 break;
2978         case P2P_LISTEN_ONLY:
2979                 /* Check if we timed out waiting for PD req */
2980                 if (p2p->pending_action_state == P2P_PENDING_PD)
2981                         p2p_timeout_prov_disc_req(p2p);
2982
2983                 if (p2p->ext_listen_only) {
2984                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2985                                 "P2P: Extended Listen Timing - Listen State "
2986                                 "completed");
2987                         p2p->ext_listen_only = 0;
2988                         p2p_set_state(p2p, P2P_IDLE);
2989                 }
2990                 break;
2991         case P2P_WAIT_PEER_CONNECT:
2992                 p2p_timeout_wait_peer_connect(p2p);
2993                 break;
2994         case P2P_WAIT_PEER_IDLE:
2995                 p2p_timeout_wait_peer_idle(p2p);
2996                 break;
2997         case P2P_SD_DURING_FIND:
2998                 p2p_timeout_sd_during_find(p2p);
2999                 break;
3000         case P2P_PROVISIONING:
3001                 break;
3002         case P2P_PD_DURING_FIND:
3003                 p2p_timeout_prov_disc_during_find(p2p);
3004                 break;
3005         case P2P_INVITE:
3006                 p2p_timeout_invite(p2p);
3007                 break;
3008         case P2P_INVITE_LISTEN:
3009                 p2p_timeout_invite_listen(p2p);
3010                 break;
3011         case P2P_SEARCH_WHEN_READY:
3012                 break;
3013         }
3014 }
3015
3016
3017 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3018 {
3019         struct p2p_device *dev;
3020
3021         dev = p2p_get_device(p2p, peer_addr);
3022         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3023                 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3024         if (dev == NULL) {
3025                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3026                         " unknown", MAC2STR(peer_addr));
3027                 return -1;
3028         }
3029         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3030         dev->flags |= P2P_DEV_USER_REJECTED;
3031         return 0;
3032 }
3033
3034
3035 const char * p2p_wps_method_text(enum p2p_wps_method method)
3036 {
3037         switch (method) {
3038         case WPS_NOT_READY:
3039                 return "not-ready";
3040         case WPS_PIN_DISPLAY:
3041                 return "Display";
3042         case WPS_PIN_KEYPAD:
3043                 return "Keypad";
3044         case WPS_PBC:
3045                 return "PBC";
3046         }
3047
3048         return "??";
3049 }
3050
3051
3052 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3053 {
3054         switch (go_state) {
3055         case UNKNOWN_GO:
3056                 return "unknown";
3057         case LOCAL_GO:
3058                 return "local";
3059         case  REMOTE_GO:
3060                 return "remote";
3061         }
3062
3063         return "??";
3064 }
3065
3066
3067 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
3068                       char *buf, size_t buflen)
3069 {
3070         struct p2p_device *dev;
3071         int res;
3072         char *pos, *end;
3073         struct os_time now;
3074         char devtype[WPS_DEV_TYPE_BUFSIZE];
3075
3076         if (addr)
3077                 dev = p2p_get_device(p2p, addr);
3078         else
3079                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3080
3081         if (dev && next) {
3082                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3083                 if (&dev->list == &p2p->devices)
3084                         dev = NULL;
3085         }
3086
3087         if (dev == NULL)
3088                 return -1;
3089
3090         pos = buf;
3091         end = buf + buflen;
3092
3093         res = os_snprintf(pos, end - pos, MACSTR "\n",
3094                           MAC2STR(dev->info.p2p_device_addr));
3095         if (res < 0 || res >= end - pos)
3096                 return pos - buf;
3097         pos += res;
3098
3099         os_get_time(&now);
3100         res = os_snprintf(pos, end - pos,
3101                           "age=%d\n"
3102                           "listen_freq=%d\n"
3103                           "level=%d\n"
3104                           "wps_method=%s\n"
3105                           "interface_addr=" MACSTR "\n"
3106                           "member_in_go_dev=" MACSTR "\n"
3107                           "member_in_go_iface=" MACSTR "\n"
3108                           "pri_dev_type=%s\n"
3109                           "device_name=%s\n"
3110                           "manufacturer=%s\n"
3111                           "model_name=%s\n"
3112                           "model_number=%s\n"
3113                           "serial_number=%s\n"
3114                           "config_methods=0x%x\n"
3115                           "dev_capab=0x%x\n"
3116                           "group_capab=0x%x\n"
3117                           "go_neg_req_sent=%d\n"
3118                           "go_state=%s\n"
3119                           "dialog_token=%u\n"
3120                           "intended_addr=" MACSTR "\n"
3121                           "country=%c%c\n"
3122                           "oper_freq=%d\n"
3123                           "req_config_methods=0x%x\n"
3124                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3125                           "status=%d\n"
3126                           "wait_count=%u\n"
3127                           "invitation_reqs=%u\n",
3128                           (int) (now.sec - dev->last_seen.sec),
3129                           dev->listen_freq,
3130                           dev->info.level,
3131                           p2p_wps_method_text(dev->wps_method),
3132                           MAC2STR(dev->interface_addr),
3133                           MAC2STR(dev->member_in_go_dev),
3134                           MAC2STR(dev->member_in_go_iface),
3135                           wps_dev_type_bin2str(dev->info.pri_dev_type,
3136                                                devtype, sizeof(devtype)),
3137                           dev->info.device_name,
3138                           dev->info.manufacturer,
3139                           dev->info.model_name,
3140                           dev->info.model_number,
3141                           dev->info.serial_number,
3142                           dev->info.config_methods,
3143                           dev->info.dev_capab,
3144                           dev->info.group_capab,
3145                           dev->go_neg_req_sent,
3146                           p2p_go_state_text(dev->go_state),
3147                           dev->dialog_token,
3148                           MAC2STR(dev->intended_addr),
3149                           dev->country[0] ? dev->country[0] : '_',
3150                           dev->country[1] ? dev->country[1] : '_',
3151                           dev->oper_freq,
3152                           dev->req_config_methods,
3153                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3154                           "[PROBE_REQ_ONLY]" : "",
3155                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3156                           dev->flags & P2P_DEV_NOT_YET_READY ?
3157                           "[NOT_YET_READY]" : "",
3158                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3159                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3160                           "",
3161                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3162                           "[PD_PEER_DISPLAY]" : "",
3163                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3164                           "[PD_PEER_KEYPAD]" : "",
3165                           dev->flags & P2P_DEV_USER_REJECTED ?
3166                           "[USER_REJECTED]" : "",
3167                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3168                           "[PEER_WAITING_RESPONSE]" : "",
3169                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3170                           "[PREFER_PERSISTENT_GROUP]" : "",
3171                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3172                           "[WAIT_GO_NEG_RESPONSE]" : "",
3173                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3174                           "[WAIT_GO_NEG_CONFIRM]" : "",
3175                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3176                           "[GROUP_CLIENT_ONLY]" : "",
3177                           dev->flags & P2P_DEV_FORCE_FREQ ?
3178                           "[FORCE_FREQ]" : "",
3179                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3180                           "[PD_FOR_JOIN]" : "",
3181                           dev->status,
3182                           dev->wait_count,
3183                           dev->invitation_reqs);
3184         if (res < 0 || res >= end - pos)
3185                 return pos - buf;
3186         pos += res;
3187
3188         if (dev->ext_listen_period) {
3189                 res = os_snprintf(pos, end - pos,
3190                                   "ext_listen_period=%u\n"
3191                                   "ext_listen_interval=%u\n",
3192                                   dev->ext_listen_period,
3193                                   dev->ext_listen_interval);
3194                 if (res < 0 || res >= end - pos)
3195                         return pos - buf;
3196                 pos += res;
3197         }
3198
3199         if (dev->oper_ssid_len) {
3200                 res = os_snprintf(pos, end - pos,
3201                                   "oper_ssid=%s\n",
3202                                   wpa_ssid_txt(dev->oper_ssid,
3203                                                dev->oper_ssid_len));
3204                 if (res < 0 || res >= end - pos)
3205                         return pos - buf;
3206                 pos += res;
3207         }
3208
3209         return pos - buf;
3210 }
3211
3212
3213 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3214 {
3215         if (enabled) {
3216                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3217                         "discoverability enabled");
3218                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3219         } else {
3220                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3221                         "discoverability disabled");
3222                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3223         }
3224 }
3225
3226
3227 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3228                                               u32 duration2, u32 interval2)
3229 {
3230         struct wpabuf *req;
3231         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3232         u8 *len;
3233
3234         req = wpabuf_alloc(100);
3235         if (req == NULL)
3236                 return NULL;
3237
3238         if (duration1 || interval1) {
3239                 os_memset(&desc1, 0, sizeof(desc1));
3240                 desc1.count_type = 1;
3241                 desc1.duration = duration1;
3242                 desc1.interval = interval1;
3243                 ptr1 = &desc1;
3244
3245                 if (duration2 || interval2) {
3246                         os_memset(&desc2, 0, sizeof(desc2));
3247                         desc2.count_type = 2;
3248                         desc2.duration = duration2;
3249                         desc2.interval = interval2;
3250                         ptr2 = &desc2;
3251                 }
3252         }
3253
3254         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3255         len = p2p_buf_add_ie_hdr(req);
3256         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3257         p2p_buf_update_ie_hdr(req, len);
3258
3259         return req;
3260 }
3261
3262
3263 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3264                      const u8 *own_interface_addr, unsigned int freq,
3265                      u32 duration1, u32 interval1, u32 duration2,
3266                      u32 interval2)
3267 {
3268         struct wpabuf *req;
3269
3270         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3271                 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3272                 "int1=%u dur2=%u int2=%u",
3273                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3274                 freq, duration1, interval1, duration2, interval2);
3275
3276         req = p2p_build_presence_req(duration1, interval1, duration2,
3277                                      interval2);
3278         if (req == NULL)
3279                 return -1;
3280
3281         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3282         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3283                             go_interface_addr,
3284                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3285                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3286                         "P2P: Failed to send Action frame");
3287         }
3288         wpabuf_free(req);
3289
3290         return 0;
3291 }
3292
3293
3294 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3295                                                size_t noa_len, u8 dialog_token)
3296 {
3297         struct wpabuf *resp;
3298         u8 *len;
3299
3300         resp = wpabuf_alloc(100 + noa_len);
3301         if (resp == NULL)
3302                 return NULL;
3303
3304         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3305         len = p2p_buf_add_ie_hdr(resp);
3306         p2p_buf_add_status(resp, status);
3307         if (noa) {
3308                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3309                 wpabuf_put_le16(resp, noa_len);
3310                 wpabuf_put_data(resp, noa, noa_len);
3311         } else
3312                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3313         p2p_buf_update_ie_hdr(resp, len);
3314
3315         return resp;
3316 }
3317
3318
3319 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3320                                      const u8 *sa, const u8 *data, size_t len,
3321                                      int rx_freq)
3322 {
3323         struct p2p_message msg;
3324         u8 status;
3325         struct wpabuf *resp;
3326         size_t g;
3327         struct p2p_group *group = NULL;
3328         int parsed = 0;
3329         u8 noa[50];
3330         int noa_len;
3331
3332         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3333                 "P2P: Received P2P Action - P2P Presence Request");
3334
3335         for (g = 0; g < p2p->num_groups; g++) {
3336                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3337                               ETH_ALEN) == 0) {
3338                         group = p2p->groups[g];
3339                         break;
3340                 }
3341         }
3342         if (group == NULL) {
3343                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3344                         "P2P: Ignore P2P Presence Request for unknown group "
3345                         MACSTR, MAC2STR(da));
3346                 return;
3347         }
3348
3349         if (p2p_parse(data, len, &msg) < 0) {
3350                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3351                         "P2P: Failed to parse P2P Presence Request");
3352                 status = P2P_SC_FAIL_INVALID_PARAMS;
3353                 goto fail;
3354         }
3355         parsed = 1;
3356
3357         if (msg.noa == NULL) {
3358                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3359                         "P2P: No NoA attribute in P2P Presence Request");
3360                 status = P2P_SC_FAIL_INVALID_PARAMS;
3361                 goto fail;
3362         }
3363
3364         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3365
3366 fail:
3367         if (p2p->cfg->get_noa)
3368                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3369                                             sizeof(noa));
3370         else
3371                 noa_len = -1;
3372         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3373                                        noa_len > 0 ? noa_len : 0,
3374                                        msg.dialog_token);
3375         if (parsed)
3376                 p2p_parse_free(&msg);
3377         if (resp == NULL)
3378                 return;
3379
3380         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3381         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3382                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3383                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3384                         "P2P: Failed to send Action frame");
3385         }
3386         wpabuf_free(resp);
3387 }
3388
3389
3390 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3391                                       const u8 *sa, const u8 *data, size_t len)
3392 {
3393         struct p2p_message msg;
3394
3395         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3396                 "P2P: Received P2P Action - P2P Presence Response");
3397
3398         if (p2p_parse(data, len, &msg) < 0) {
3399                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3400                         "P2P: Failed to parse P2P Presence Response");
3401                 return;
3402         }
3403
3404         if (msg.status == NULL || msg.noa == NULL) {
3405                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3406                         "P2P: No Status or NoA attribute in P2P Presence "
3407                         "Response");
3408                 p2p_parse_free(&msg);
3409                 return;
3410         }
3411
3412         if (*msg.status) {
3413                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3414                         "P2P: P2P Presence Request was rejected: status %u",
3415                         *msg.status);
3416                 p2p_parse_free(&msg);
3417                 return;
3418         }
3419
3420         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3421                 "P2P: P2P Presence Request was accepted");
3422         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3423                     msg.noa, msg.noa_len);
3424         /* TODO: process NoA */
3425         p2p_parse_free(&msg);
3426 }
3427
3428
3429 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3430 {
3431         struct p2p_data *p2p = eloop_ctx;
3432
3433         if (p2p->ext_listen_interval) {
3434                 /* Schedule next extended listen timeout */
3435                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3436                                        p2p->ext_listen_interval_usec,
3437                                        p2p_ext_listen_timeout, p2p, NULL);
3438         }
3439
3440         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3441                 /*
3442                  * This should not really happen, but it looks like the Listen
3443                  * command may fail is something else (e.g., a scan) was
3444                  * running at an inconvenient time. As a workaround, allow new
3445                  * Extended Listen operation to be started.
3446                  */
3447                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3448                         "Extended Listen operation had not been completed - "
3449                         "try again");
3450                 p2p->ext_listen_only = 0;
3451                 p2p_set_state(p2p, P2P_IDLE);
3452         }
3453
3454         if (p2p->state != P2P_IDLE) {
3455                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3456                         "Listen timeout in active state (%s)",
3457                         p2p_state_txt(p2p->state));
3458                 return;
3459         }
3460
3461         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3462         p2p->ext_listen_only = 1;
3463         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3464                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3465                         "Listen state for Extended Listen Timing");
3466                 p2p->ext_listen_only = 0;
3467         }
3468 }
3469
3470
3471 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3472                    unsigned int interval)
3473 {
3474         if (period > 65535 || interval > 65535 || period > interval ||
3475             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3476                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3477                         "P2P: Invalid Extended Listen Timing request: "
3478                         "period=%u interval=%u", period, interval);
3479                 return -1;
3480         }
3481
3482         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3483
3484         if (interval == 0) {
3485                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3486                         "P2P: Disabling Extended Listen Timing");
3487                 p2p->ext_listen_period = 0;
3488                 p2p->ext_listen_interval = 0;
3489                 return 0;
3490         }
3491
3492         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3493                 "P2P: Enabling Extended Listen Timing: period %u msec, "
3494                 "interval %u msec", period, interval);
3495         p2p->ext_listen_period = period;
3496         p2p->ext_listen_interval = interval;
3497         p2p->ext_listen_interval_sec = interval / 1000;
3498         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3499
3500         eloop_register_timeout(p2p->ext_listen_interval_sec,
3501                                p2p->ext_listen_interval_usec,
3502                                p2p_ext_listen_timeout, p2p, NULL);
3503
3504         return 0;
3505 }
3506
3507
3508 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3509                       const u8 *ie, size_t ie_len)
3510 {
3511         struct p2p_message msg;
3512
3513         if (bssid == NULL || ie == NULL)
3514                 return;
3515
3516         os_memset(&msg, 0, sizeof(msg));
3517         if (p2p_parse_ies(ie, ie_len, &msg))
3518                 return;
3519         if (msg.minor_reason_code == NULL)
3520                 return;
3521
3522         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3523                 "P2P: Deauthentication notification BSSID " MACSTR
3524                 " reason_code=%u minor_reason_code=%u",
3525                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3526
3527         p2p_parse_free(&msg);
3528 }
3529
3530
3531 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3532                         const u8 *ie, size_t ie_len)
3533 {
3534         struct p2p_message msg;
3535
3536         if (bssid == NULL || ie == NULL)
3537                 return;
3538
3539         os_memset(&msg, 0, sizeof(msg));
3540         if (p2p_parse_ies(ie, ie_len, &msg))
3541                 return;
3542         if (msg.minor_reason_code == NULL)
3543                 return;
3544
3545         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3546                 "P2P: Disassociation notification BSSID " MACSTR
3547                 " reason_code=%u minor_reason_code=%u",
3548                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3549
3550         p2p_parse_free(&msg);
3551 }
3552
3553
3554 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3555 {
3556         if (enabled) {
3557                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3558                         "Device operations enabled");
3559                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3560         } else {
3561                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3562                         "Device operations disabled");
3563                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3564         }
3565 }
3566
3567
3568 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3569 {
3570         if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3571                 return -1;
3572
3573         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3574                 "reg_class %u channel %u", reg_class, channel);
3575         p2p->cfg->reg_class = reg_class;
3576         p2p->cfg->channel = channel;
3577
3578         return 0;
3579 }
3580
3581
3582 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3583 {
3584         wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3585         if (postfix == NULL) {
3586                 p2p->cfg->ssid_postfix_len = 0;
3587                 return 0;
3588         }
3589         if (len > sizeof(p2p->cfg->ssid_postfix))
3590                 return -1;
3591         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3592         p2p->cfg->ssid_postfix_len = len;
3593         return 0;
3594 }
3595
3596
3597 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3598                          int cfg_op_channel)
3599 {
3600         if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3601             < 0)
3602                 return -1;
3603
3604         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3605                 "reg_class %u channel %u", op_reg_class, op_channel);
3606         p2p->cfg->op_reg_class = op_reg_class;
3607         p2p->cfg->op_channel = op_channel;
3608         p2p->cfg->cfg_op_channel = cfg_op_channel;
3609         return 0;
3610 }
3611
3612
3613 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3614                            u8 *iface_addr)
3615 {
3616         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3617         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3618                 return -1;
3619         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3620         return 0;
3621 }
3622
3623
3624 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3625                            u8 *dev_addr)
3626 {
3627         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3628         if (dev == NULL)
3629                 return -1;
3630         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3631         return 0;
3632 }
3633
3634
3635 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3636 {
3637         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3638         if (is_zero_ether_addr(p2p->peer_filter))
3639                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3640                         "filter");
3641         else
3642                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3643                         "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3644 }
3645
3646
3647 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3648 {
3649         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3650                 enabled ? "enabled" : "disabled");
3651         if (p2p->cross_connect == enabled)
3652                 return;
3653         p2p->cross_connect = enabled;
3654         /* TODO: may need to tear down any action group where we are GO(?) */
3655 }
3656
3657
3658 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3659 {
3660         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3661         if (dev == NULL)
3662                 return -1;
3663         if (dev->oper_freq <= 0)
3664                 return -1;
3665         return dev->oper_freq;
3666 }
3667
3668
3669 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3670 {
3671         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3672                 enabled ? "enabled" : "disabled");
3673         p2p->cfg->p2p_intra_bss = enabled;
3674 }
3675
3676
3677 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3678 {
3679         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3680         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3681 }
3682
3683
3684 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3685                     const u8 *src, const u8 *bssid, const u8 *buf,
3686                     size_t len, unsigned int wait_time)
3687 {
3688         if (p2p->p2p_scan_running) {
3689                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3690                         "frame TX until p2p_scan completes");
3691                 if (p2p->after_scan_tx) {
3692                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3693                                 "previous pending Action frame TX");
3694                         os_free(p2p->after_scan_tx);
3695                 }
3696                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3697                                                len);
3698                 if (p2p->after_scan_tx == NULL)
3699                         return -1;
3700                 p2p->after_scan_tx->freq = freq;
3701                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3702                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3703                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3704                 p2p->after_scan_tx->len = len;
3705                 p2p->after_scan_tx->wait_time = wait_time;
3706                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3707                 return 0;
3708         }
3709
3710         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3711                                      buf, len, wait_time);
3712 }
3713
3714
3715 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3716                            int freq_overall)
3717 {
3718         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3719                 "  5 GHz: %d,  overall: %d", freq_24, freq_5, freq_overall);
3720         p2p->best_freq_24 = freq_24;
3721         p2p->best_freq_5 = freq_5;
3722         p2p->best_freq_overall = freq_overall;
3723 }
3724
3725
3726 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3727 {
3728         if (p2p == NULL || p2p->go_neg_peer == NULL)
3729                 return NULL;
3730         return p2p->go_neg_peer->info.p2p_device_addr;
3731 }
3732
3733
3734 const struct p2p_peer_info *
3735 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3736 {
3737         struct p2p_device *dev;
3738
3739         if (addr) {
3740                 dev = p2p_get_device(p2p, addr);
3741                 if (!dev)
3742                         return NULL;
3743
3744                 if (!next) {
3745                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3746                                 return NULL;
3747
3748                         return &dev->info;
3749                 } else {
3750                         do {
3751                                 dev = dl_list_first(&dev->list,
3752                                                     struct p2p_device,
3753                                                     list);
3754                                 if (&dev->list == &p2p->devices)
3755                                         return NULL;
3756                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3757                 }
3758         } else {
3759                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3760                 if (!dev)
3761                         return NULL;
3762                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3763                         dev = dl_list_first(&dev->list,
3764                                             struct p2p_device,
3765                                             list);
3766                         if (&dev->list == &p2p->devices)
3767                                 return NULL;
3768                 }
3769         }
3770
3771         return &dev->info;
3772 }
3773
3774
3775 int p2p_in_progress(struct p2p_data *p2p)
3776 {
3777         if (p2p == NULL)
3778                 return 0;
3779         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
3780 }