src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "wps/wps_i.h"
  16 #include "p2p_i.h"
  17 #include "p2p.h"
  18
  19
  20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  23                                      const u8 *sa, const u8 *data, size_t len,
  24                                      int rx_freq);
  25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  26                                       const u8 *sa, const u8 *data,
  27                                       size_t len);
  28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  30
  31
  32 /*
  33  * p2p_scan recovery timeout
  34  *
  35  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  36  * timeout for this to avoid hitting P2P timeout unnecessarily.
  37  */
  38 #define P2P_SCAN_TIMEOUT 35
  39
  40 /**
  41  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  42  * entries will be removed
  43  */
  44 #define P2P_PEER_EXPIRATION_AGE 300
  45
  46 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  47
  48 static void p2p_expire_peers(struct p2p_data *p2p)
  49 {
  50         struct p2p_device *dev, *n;
  51         struct os_time now;
  52         size_t i;
  53
  54         os_get_time(&now);
  55         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  56                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  57                         continue;
  58
  59                 if (p2p->cfg->go_connected &&
  60                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  61                                            dev->info.p2p_device_addr)) {
  62                         /*
  63                          * We are connected as a client to a group in which the
  64                          * peer is the GO, so do not expire the peer entry.
  65                          */
  66                         os_get_time(&dev->last_seen);
  67                         continue;
  68                 }
  69
  70                 for (i = 0; i < p2p->num_groups; i++) {
  71                         if (p2p_group_is_client_connected(
  72                                     p2p->groups[i], dev->info.p2p_device_addr))
  73                                 break;
  74                 }
  75                 if (i < p2p->num_groups) {
  76                         /*
  77                          * The peer is connected as a client in a group where
  78                          * we are the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_time(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  85                         MAC2STR(dev->info.p2p_device_addr));
  86                 dl_list_del(&dev->list);
  87                 p2p_device_free(p2p, dev);
  88         }
  89 }
  90
  91
  92 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
  93 {
  94         struct p2p_data *p2p = eloop_ctx;
  95         p2p_expire_peers(p2p);
  96         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
  97                                p2p_expiration_timeout, p2p, NULL);
  98 }
  99
 100
 101 static const char * p2p_state_txt(int state)
 102 {
 103         switch (state) {
 104         case P2P_IDLE:
 105                 return "IDLE";
 106         case P2P_SEARCH:
 107                 return "SEARCH";
 108         case P2P_CONNECT:
 109                 return "CONNECT";
 110         case P2P_CONNECT_LISTEN:
 111                 return "CONNECT_LISTEN";
 112         case P2P_GO_NEG:
 113                 return "GO_NEG";
 114         case P2P_LISTEN_ONLY:
 115                 return "LISTEN_ONLY";
 116         case P2P_WAIT_PEER_CONNECT:
 117                 return "WAIT_PEER_CONNECT";
 118         case P2P_WAIT_PEER_IDLE:
 119                 return "WAIT_PEER_IDLE";
 120         case P2P_SD_DURING_FIND:
 121                 return "SD_DURING_FIND";
 122         case P2P_PROVISIONING:
 123                 return "PROVISIONING";
 124         case P2P_PD_DURING_FIND:
 125                 return "PD_DURING_FIND";
 126         case P2P_INVITE:
 127                 return "INVITE";
 128         case P2P_INVITE_LISTEN:
 129                 return "INVITE_LISTEN";
 130         case P2P_SEARCH_WHEN_READY:
 131                 return "SEARCH_WHEN_READY";
 132         case P2P_CONTINUE_SEARCH_WHEN_READY:
 133                 return "CONTINUE_SEARCH_WHEN_READY";
 134         default:
 135                 return "?";
 136         }
 137 }
 138
 139
 140 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 141 {
 142         struct p2p_device *dev = NULL;
 143
 144         if (!addr || !p2p)
 145                 return 0;
 146
 147         dev = p2p_get_device(p2p, addr);
 148         if (dev)
 149                 return dev->wps_prov_info;
 150         else
 151                 return 0;
 152 }
 153
 154
 155 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 156 {
 157         struct p2p_device *dev = NULL;
 158
 159         if (!addr || !p2p)
 160                 return;
 161
 162         dev = p2p_get_device(p2p, addr);
 163         if (dev)
 164                 dev->wps_prov_info = 0;
 165 }
 166
 167
 168 void p2p_set_state(struct p2p_data *p2p, int new_state)
 169 {
 170         p2p_dbg(p2p, "State %s -> %s",
 171                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 172         p2p->state = new_state;
 173 }
 174
 175
 176 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 177 {
 178         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 179                 p2p_state_txt(p2p->state), sec, usec);
 180         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 181         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 182 }
 183
 184
 185 void p2p_clear_timeout(struct p2p_data *p2p)
 186 {
 187         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 188         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 189 }
 190
 191
 192 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 193                        int status)
 194 {
 195         struct p2p_go_neg_results res;
 196         p2p_clear_timeout(p2p);
 197         p2p_set_state(p2p, P2P_IDLE);
 198         if (p2p->go_neg_peer) {
 199                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 200                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 201         }
 202         p2p->go_neg_peer = NULL;
 203
 204         os_memset(&res, 0, sizeof(res));
 205         res.status = status;
 206         if (peer) {
 207                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 208                           ETH_ALEN);
 209                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 210                           ETH_ALEN);
 211         }
 212         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 213 }
 214
 215
 216 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 217 {
 218         unsigned int r, tu;
 219         int freq;
 220         struct wpabuf *ies;
 221
 222         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 223                 p2p_state_txt(p2p->state));
 224
 225         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 226         if (freq < 0) {
 227                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 228                 return;
 229         }
 230
 231         os_get_random((u8 *) &r, sizeof(r));
 232         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 233               p2p->min_disc_int) * 100;
 234         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 235                 tu = p2p->max_disc_tu;
 236         if (!dev_disc && tu < 100)
 237                 tu = 100; /* Need to wait in non-device discovery use cases */
 238         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 239                 tu = p2p->cfg->max_listen * 1000 / 1024;
 240
 241         if (tu == 0) {
 242                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 243                 p2p_set_timeout(p2p, 0, 0);
 244                 return;
 245         }
 246
 247         p2p->pending_listen_freq = freq;
 248         p2p->pending_listen_sec = 0;
 249         p2p->pending_listen_usec = 1024 * tu;
 250
 251         ies = p2p_build_probe_resp_ies(p2p);
 252         if (ies == NULL)
 253                 return;
 254
 255         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 256                     ies) < 0) {
 257                 p2p_dbg(p2p, "Failed to start listen mode");
 258                 p2p->pending_listen_freq = 0;
 259         }
 260         wpabuf_free(ies);
 261 }
 262
 263
 264 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 265 {
 266         int freq;
 267         struct wpabuf *ies;
 268
 269         p2p_dbg(p2p, "Going to listen(only) state");
 270
 271         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 272         if (freq < 0) {
 273                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 274                 return -1;
 275         }
 276
 277         p2p->pending_listen_freq = freq;
 278         p2p->pending_listen_sec = timeout / 1000;
 279         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 280
 281         if (p2p->p2p_scan_running) {
 282                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 283                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 284                         return 0;
 285                 }
 286                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 287                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 288                 return 0;
 289         }
 290
 291         ies = p2p_build_probe_resp_ies(p2p);
 292         if (ies == NULL)
 293                 return -1;
 294
 295         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 296                 p2p_dbg(p2p, "Failed to start listen mode");
 297                 p2p->pending_listen_freq = 0;
 298                 wpabuf_free(ies);
 299                 return -1;
 300         }
 301         wpabuf_free(ies);
 302
 303         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 304
 305         return 0;
 306 }
 307
 308
 309 static void p2p_device_clear_reported(struct p2p_data *p2p)
 310 {
 311         struct p2p_device *dev;
 312         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 313                 dev->flags &= ~P2P_DEV_REPORTED;
 314 }
 315
 316
 317 /**
 318  * p2p_get_device - Fetch a peer entry
 319  * @p2p: P2P module context from p2p_init()
 320  * @addr: P2P Device Address of the peer
 321  * Returns: Pointer to the device entry or %NULL if not found
 322  */
 323 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 324 {
 325         struct p2p_device *dev;
 326         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 327                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 328                         return dev;
 329         }
 330         return NULL;
 331 }
 332
 333
 334 /**
 335  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 336  * @p2p: P2P module context from p2p_init()
 337  * @addr: P2P Interface Address of the peer
 338  * Returns: Pointer to the device entry or %NULL if not found
 339  */
 340 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 341                                              const u8 *addr)
 342 {
 343         struct p2p_device *dev;
 344         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 345                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 346                         return dev;
 347         }
 348         return NULL;
 349 }
 350
 351
 352 /**
 353  * p2p_create_device - Create a peer entry
 354  * @p2p: P2P module context from p2p_init()
 355  * @addr: P2P Device Address of the peer
 356  * Returns: Pointer to the device entry or %NULL on failure
 357  *
 358  * If there is already an entry for the peer, it will be returned instead of
 359  * creating a new one.
 360  */
 361 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 362                                              const u8 *addr)
 363 {
 364         struct p2p_device *dev, *oldest = NULL;
 365         size_t count = 0;
 366
 367         dev = p2p_get_device(p2p, addr);
 368         if (dev)
 369                 return dev;
 370
 371         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 372                 count++;
 373                 if (oldest == NULL ||
 374                     os_time_before(&dev->last_seen, &oldest->last_seen))
 375                         oldest = dev;
 376         }
 377         if (count + 1 > p2p->cfg->max_peers && oldest) {
 378                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 379                 dl_list_del(&oldest->list);
 380                 p2p_device_free(p2p, oldest);
 381         }
 382
 383         dev = os_zalloc(sizeof(*dev));
 384         if (dev == NULL)
 385                 return NULL;
 386         dl_list_add(&p2p->devices, &dev->list);
 387         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 388
 389         return dev;
 390 }
 391
 392
 393 static void p2p_copy_client_info(struct p2p_device *dev,
 394                                  struct p2p_client_info *cli)
 395 {
 396         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 397         dev->info.device_name[cli->dev_name_len] = '\0';
 398         dev->info.dev_capab = cli->dev_capab;
 399         dev->info.config_methods = cli->config_methods;
 400         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 401         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 402         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 403                   dev->info.wps_sec_dev_type_list_len);
 404 }
 405
 406
 407 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 408                                  const u8 *go_interface_addr, int freq,
 409                                  const u8 *gi, size_t gi_len)
 410 {
 411         struct p2p_group_info info;
 412         size_t c;
 413         struct p2p_device *dev;
 414
 415         if (gi == NULL)
 416                 return 0;
 417
 418         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 419                 return -1;
 420
 421         /*
 422          * Clear old data for this group; if the devices are still in the
 423          * group, the information will be restored in the loop following this.
 424          */
 425         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 426                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 427                               ETH_ALEN) == 0) {
 428                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 429                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 430                 }
 431         }
 432
 433         for (c = 0; c < info.num_clients; c++) {
 434                 struct p2p_client_info *cli = &info.client[c];
 435                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 436                               ETH_ALEN) == 0)
 437                         continue; /* ignore our own entry */
 438                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 439                 if (dev) {
 440                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 441                                           P2P_DEV_PROBE_REQ_ONLY)) {
 442                                 /*
 443                                  * Update information since we have not
 444                                  * received this directly from the client.
 445                                  */
 446                                 p2p_copy_client_info(dev, cli);
 447                         } else {
 448                                 /*
 449                                  * Need to update P2P Client Discoverability
 450                                  * flag since it is valid only in P2P Group
 451                                  * Info attribute.
 452                                  */
 453                                 dev->info.dev_capab &=
 454                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 455                                 dev->info.dev_capab |=
 456                                         cli->dev_capab &
 457                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 458                         }
 459                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 460                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 461                         }
 462                 } else {
 463                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 464                         if (dev == NULL)
 465                                 continue;
 466                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 467                         p2p_copy_client_info(dev, cli);
 468                         dev->oper_freq = freq;
 469                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 470                                             dev->info.p2p_device_addr,
 471                                             &dev->info, 1);
 472                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 473                 }
 474
 475                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 476                           ETH_ALEN);
 477                 os_get_time(&dev->last_seen);
 478                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 479                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 480                           ETH_ALEN);
 481         }
 482
 483         return 0;
 484 }
 485
 486
 487 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 488                               int probe_req, const struct p2p_message *msg)
 489 {
 490         os_memcpy(dev->info.device_name, msg->device_name,
 491                   sizeof(dev->info.device_name));
 492
 493         if (msg->manufacturer &&
 494             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 495                 os_memset(dev->info.manufacturer, 0,
 496                           sizeof(dev->info.manufacturer));
 497                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 498                           msg->manufacturer_len);
 499         }
 500
 501         if (msg->model_name &&
 502             msg->model_name_len < sizeof(dev->info.model_name)) {
 503                 os_memset(dev->info.model_name, 0,
 504                           sizeof(dev->info.model_name));
 505                 os_memcpy(dev->info.model_name, msg->model_name,
 506                           msg->model_name_len);
 507         }
 508
 509         if (msg->model_number &&
 510             msg->model_number_len < sizeof(dev->info.model_number)) {
 511                 os_memset(dev->info.model_number, 0,
 512                           sizeof(dev->info.model_number));
 513                 os_memcpy(dev->info.model_number, msg->model_number,
 514                           msg->model_number_len);
 515         }
 516
 517         if (msg->serial_number &&
 518             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 519                 os_memset(dev->info.serial_number, 0,
 520                           sizeof(dev->info.serial_number));
 521                 os_memcpy(dev->info.serial_number, msg->serial_number,
 522                           msg->serial_number_len);
 523         }
 524
 525         if (msg->pri_dev_type)
 526                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 527                           sizeof(dev->info.pri_dev_type));
 528         else if (msg->wps_pri_dev_type)
 529                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 530                           sizeof(dev->info.pri_dev_type));
 531
 532         if (msg->wps_sec_dev_type_list) {
 533                 os_memcpy(dev->info.wps_sec_dev_type_list,
 534                           msg->wps_sec_dev_type_list,
 535                           msg->wps_sec_dev_type_list_len);
 536                 dev->info.wps_sec_dev_type_list_len =
 537                         msg->wps_sec_dev_type_list_len;
 538         }
 539
 540         if (msg->capability) {
 541                 /*
 542                  * P2P Client Discoverability bit is reserved in all frames
 543                  * that use this function, so do not change its value here.
 544                  */
 545                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 546                 dev->info.dev_capab |= msg->capability[0] &
 547                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 548                 dev->info.group_capab = msg->capability[1];
 549         }
 550
 551         if (msg->ext_listen_timing) {
 552                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 553                 dev->ext_listen_interval =
 554                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 555         }
 556
 557         if (!probe_req) {
 558                 u16 new_config_methods;
 559                 new_config_methods = msg->config_methods ?
 560                         msg->config_methods : msg->wps_config_methods;
 561                 if (new_config_methods &&
 562                     dev->info.config_methods != new_config_methods) {
 563                         p2p_dbg(p2p, "Update peer " MACSTR
 564                                 " config_methods 0x%x -> 0x%x",
 565                                 MAC2STR(dev->info.p2p_device_addr),
 566                                 dev->info.config_methods,
 567                                 new_config_methods);
 568                         dev->info.config_methods = new_config_methods;
 569                 }
 570         }
 571 }
 572
 573
 574 /**
 575  * p2p_add_device - Add peer entries based on scan results or P2P frames
 576  * @p2p: P2P module context from p2p_init()
 577  * @addr: Source address of Beacon or Probe Response frame (may be either
 578  *      P2P Device Address or P2P Interface Address)
 579  * @level: Signal level (signal strength of the received frame from the peer)
 580  * @freq: Frequency on which the Beacon or Probe Response frame was received
 581  * @rx_time: Time when the result was received
 582  * @ies: IEs from the Beacon or Probe Response frame
 583  * @ies_len: Length of ies buffer in octets
 584  * @scan_res: Whether this was based on scan results
 585  * Returns: 0 on success, -1 on failure
 586  *
 587  * If the scan result is for a GO, the clients in the group will also be added
 588  * to the peer table. This function can also be used with some other frames
 589  * like Provision Discovery Request that contains P2P Capability and P2P Device
 590  * Info attributes.
 591  */
 592 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 593                    struct os_time *rx_time, int level, const u8 *ies,
 594                    size_t ies_len, int scan_res)
 595 {
 596         struct p2p_device *dev;
 597         struct p2p_message msg;
 598         const u8 *p2p_dev_addr;
 599         int i;
 600         struct os_time time_now;
 601
 602         os_memset(&msg, 0, sizeof(msg));
 603         if (p2p_parse_ies(ies, ies_len, &msg)) {
 604                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 605                 p2p_parse_free(&msg);
 606                 return -1;
 607         }
 608
 609         if (msg.p2p_device_addr)
 610                 p2p_dev_addr = msg.p2p_device_addr;
 611         else if (msg.device_id)
 612                 p2p_dev_addr = msg.device_id;
 613         else {
 614                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 615                 p2p_parse_free(&msg);
 616                 return -1;
 617         }
 618
 619         if (!is_zero_ether_addr(p2p->peer_filter) &&
 620             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 621                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 622                         " due to peer filter", MAC2STR(p2p_dev_addr));
 623                 p2p_parse_free(&msg);
 624                 return 0;
 625         }
 626
 627         dev = p2p_create_device(p2p, p2p_dev_addr);
 628         if (dev == NULL) {
 629                 p2p_parse_free(&msg);
 630                 return -1;
 631         }
 632
 633         if (rx_time == NULL) {
 634                 os_get_time(&time_now);
 635                 rx_time = &time_now;
 636         }
 637
 638         /*
 639          * Update the device entry only if the new peer
 640          * entry is newer than the one previously stored.
 641          */
 642         if (dev->last_seen.sec > 0 &&
 643             os_time_before(rx_time, &dev->last_seen)) {
 644                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 645                         (unsigned int) rx_time->sec,
 646                         (unsigned int) rx_time->usec,
 647                         (unsigned int) dev->last_seen.sec,
 648                         (unsigned int) dev->last_seen.usec);
 649                 p2p_parse_free(&msg);
 650                 return -1;
 651         }
 652
 653         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_time));
 654
 655         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 656
 657         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 658                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 659         if (msg.ssid &&
 660             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 661              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 662              != 0)) {
 663                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 664                 dev->oper_ssid_len = msg.ssid[1];
 665         }
 666
 667         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 668             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 669                 int ds_freq;
 670                 if (*msg.ds_params == 14)
 671                         ds_freq = 2484;
 672                 else
 673                         ds_freq = 2407 + *msg.ds_params * 5;
 674                 if (freq != ds_freq) {
 675                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 676                                 freq, ds_freq);
 677                         freq = ds_freq;
 678                 }
 679         }
 680
 681         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 682                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 683                         MACSTR " %d -> %d MHz (DS param %d)",
 684                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 685                         freq, msg.ds_params ? *msg.ds_params : -1);
 686         }
 687         if (scan_res) {
 688                 dev->listen_freq = freq;
 689                 if (msg.group_info)
 690                         dev->oper_freq = freq;
 691         }
 692         dev->info.level = level;
 693
 694         p2p_copy_wps_info(p2p, dev, 0, &msg);
 695
 696         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 697                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 698                 dev->info.wps_vendor_ext[i] = NULL;
 699         }
 700
 701         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 702                 if (msg.wps_vendor_ext[i] == NULL)
 703                         break;
 704                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 705                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 706                 if (dev->info.wps_vendor_ext[i] == NULL)
 707                         break;
 708         }
 709
 710         if (msg.wfd_subelems) {
 711                 wpabuf_free(dev->info.wfd_subelems);
 712                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 713         }
 714
 715         if (scan_res) {
 716                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 717                                       msg.group_info, msg.group_info_len);
 718         }
 719
 720         p2p_parse_free(&msg);
 721
 722         if (p2p_pending_sd_req(p2p, dev))
 723                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 724
 725         if (dev->flags & P2P_DEV_REPORTED)
 726                 return 0;
 727
 728         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 729                 freq, (unsigned int) rx_time->sec,
 730                 (unsigned int) rx_time->usec);
 731         if (dev->flags & P2P_DEV_USER_REJECTED) {
 732                 p2p_dbg(p2p, "Do not report rejected device");
 733                 return 0;
 734         }
 735
 736         if (dev->info.config_methods == 0 &&
 737             (freq == 2412 || freq == 2437 || freq == 2462)) {
 738                 /*
 739                  * If we have only seen a Beacon frame from a GO, we do not yet
 740                  * know what WPS config methods it supports. Since some
 741                  * applications use config_methods value from P2P-DEVICE-FOUND
 742                  * events, postpone reporting this peer until we've fully
 743                  * discovered its capabilities.
 744                  *
 745                  * At least for now, do this only if the peer was detected on
 746                  * one of the social channels since that peer can be easily be
 747                  * found again and there are no limitations of having to use
 748                  * passive scan on this channels, so this can be done through
 749                  * Probe Response frame that includes the config_methods
 750                  * information.
 751                  */
 752                 p2p_dbg(p2p, "Do not report peer " MACSTR
 753                         " with unknown config methods", MAC2STR(addr));
 754                 return 0;
 755         }
 756
 757         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 758                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 759         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 760
 761         return 0;
 762 }
 763
 764
 765 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 766 {
 767         int i;
 768
 769         if (p2p->go_neg_peer == dev) {
 770                 /*
 771                  * If GO Negotiation is in progress, report that it has failed.
 772                  */
 773                 p2p_go_neg_failed(p2p, dev, -1);
 774                 p2p->go_neg_peer = NULL;
 775         }
 776         if (p2p->invite_peer == dev)
 777                 p2p->invite_peer = NULL;
 778         if (p2p->sd_peer == dev)
 779                 p2p->sd_peer = NULL;
 780         if (p2p->pending_client_disc_go == dev)
 781                 p2p->pending_client_disc_go = NULL;
 782
 783         /* dev_lost() device, but only if it was previously dev_found() */
 784         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 785                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 786                                    dev->info.p2p_device_addr);
 787
 788         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 789                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 790                 dev->info.wps_vendor_ext[i] = NULL;
 791         }
 792
 793         wpabuf_free(dev->info.wfd_subelems);
 794
 795         os_free(dev);
 796 }
 797
 798
 799 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 800 {
 801         struct p2p_channels *c;
 802         struct p2p_reg_class *cla;
 803         size_t cl, ch;
 804         int found = 0;
 805         u8 reg_class;
 806         u8 channel;
 807         int freq;
 808
 809         c = &p2p->cfg->channels;
 810         for (cl = 0; cl < c->reg_classes; cl++) {
 811                 cla = &c->reg_class[cl];
 812                 if (cla->reg_class != p2p->last_prog_scan_class)
 813                         continue;
 814                 for (ch = 0; ch < cla->channels; ch++) {
 815                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 816                                 found = 1;
 817                                 break;
 818                         }
 819                 }
 820                 if (found)
 821                         break;
 822         }
 823
 824         if (!found) {
 825                 /* Start from beginning */
 826                 reg_class = c->reg_class[0].reg_class;
 827                 channel = c->reg_class[0].channel[0];
 828         } else {
 829                 /* Pick the next channel */
 830                 ch++;
 831                 if (ch == cla->channels) {
 832                         cl++;
 833                         if (cl == c->reg_classes)
 834                                 cl = 0;
 835                         ch = 0;
 836                 }
 837                 reg_class = c->reg_class[cl].reg_class;
 838                 channel = c->reg_class[cl].channel[ch];
 839         }
 840
 841         freq = p2p_channel_to_freq(reg_class, channel);
 842         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 843                 reg_class, channel, freq);
 844         p2p->last_prog_scan_class = reg_class;
 845         p2p->last_prog_scan_chan = channel;
 846
 847         if (freq == 2412 || freq == 2437 || freq == 2462)
 848                 return 0; /* No need to add social channels */
 849         return freq;
 850 }
 851
 852
 853 static void p2p_search(struct p2p_data *p2p)
 854 {
 855         int freq = 0;
 856         enum p2p_scan_type type;
 857         u16 pw_id = DEV_PW_DEFAULT;
 858         int res;
 859
 860         if (p2p->drv_in_listen) {
 861                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 862                 return;
 863         }
 864         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 865
 866         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 867             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 868                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 869                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 870         } else {
 871                 type = P2P_SCAN_SOCIAL;
 872                 p2p_dbg(p2p, "Starting search");
 873         }
 874
 875         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 876                                  p2p->num_req_dev_types, p2p->req_dev_types,
 877                                  p2p->find_dev_id, pw_id);
 878         if (res < 0) {
 879                 p2p_dbg(p2p, "Scan request failed");
 880                 p2p_continue_find(p2p);
 881         } else if (res == 1) {
 882                 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
 883                 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
 884         } else {
 885                 p2p_dbg(p2p, "Running p2p_scan");
 886                 p2p->p2p_scan_running = 1;
 887                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 888                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 889                                        p2p, NULL);
 890         }
 891 }
 892
 893
 894 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 895 {
 896         struct p2p_data *p2p = eloop_ctx;
 897         p2p_dbg(p2p, "Find timeout -> stop");
 898         p2p_stop_find(p2p);
 899 }
 900
 901
 902 static int p2p_run_after_scan(struct p2p_data *p2p)
 903 {
 904         struct p2p_device *dev;
 905         enum p2p_after_scan op;
 906
 907         if (p2p->after_scan_tx) {
 908                 p2p->after_scan_tx_in_progress = 1;
 909                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
 910                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 911                                       p2p->after_scan_tx->freq,
 912                                       p2p->after_scan_tx->dst,
 913                                       p2p->after_scan_tx->src,
 914                                       p2p->after_scan_tx->bssid,
 915                                       (u8 *) (p2p->after_scan_tx + 1),
 916                                       p2p->after_scan_tx->len,
 917                                       p2p->after_scan_tx->wait_time);
 918                 os_free(p2p->after_scan_tx);
 919                 p2p->after_scan_tx = NULL;
 920                 return 1;
 921         }
 922
 923         op = p2p->start_after_scan;
 924         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 925         switch (op) {
 926         case P2P_AFTER_SCAN_NOTHING:
 927                 break;
 928         case P2P_AFTER_SCAN_LISTEN:
 929                 p2p_dbg(p2p, "Start previously requested Listen state");
 930                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 931                            p2p->pending_listen_usec / 1000);
 932                 return 1;
 933         case P2P_AFTER_SCAN_CONNECT:
 934                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
 935                         MAC2STR(p2p->after_scan_peer));
 936                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 937                 if (dev == NULL) {
 938                         p2p_dbg(p2p, "Peer not known anymore");
 939                         break;
 940                 }
 941                 p2p_connect_send(p2p, dev);
 942                 return 1;
 943         }
 944
 945         return 0;
 946 }
 947
 948
 949 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 950 {
 951         struct p2p_data *p2p = eloop_ctx;
 952         int running;
 953         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
 954         running = p2p->p2p_scan_running;
 955         /* Make sure we recover from missed scan results callback */
 956         p2p->p2p_scan_running = 0;
 957
 958         if (running)
 959                 p2p_run_after_scan(p2p);
 960 }
 961
 962
 963 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 964 {
 965         p2p->num_req_dev_types = 0;
 966         os_free(p2p->req_dev_types);
 967         p2p->req_dev_types = NULL;
 968 }
 969
 970
 971 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 972              enum p2p_discovery_type type,
 973              unsigned int num_req_dev_types, const u8 *req_dev_types,
 974              const u8 *dev_id, unsigned int search_delay)
 975 {
 976         int res;
 977
 978         p2p_dbg(p2p, "Starting find (type=%d)", type);
 979         os_get_time(&p2p->find_start);
 980         if (p2p->p2p_scan_running) {
 981                 p2p_dbg(p2p, "p2p_scan is already running");
 982         }
 983
 984         p2p_free_req_dev_types(p2p);
 985         if (req_dev_types && num_req_dev_types) {
 986                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 987                                                WPS_DEV_TYPE_LEN);
 988                 if (p2p->req_dev_types == NULL)
 989                         return -1;
 990                 os_memcpy(p2p->req_dev_types, req_dev_types,
 991                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 992                 p2p->num_req_dev_types = num_req_dev_types;
 993         }
 994
 995         if (dev_id) {
 996                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
 997                 p2p->find_dev_id = p2p->find_dev_id_buf;
 998         } else
 999                 p2p->find_dev_id = NULL;
1000
1001         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1002         p2p_clear_timeout(p2p);
1003         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1004         p2p->find_type = type;
1005         p2p_device_clear_reported(p2p);
1006         p2p_set_state(p2p, P2P_SEARCH);
1007         p2p->search_delay = search_delay;
1008         p2p->in_search_delay = 0;
1009         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1010         p2p->last_p2p_find_timeout = timeout;
1011         if (timeout)
1012                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1013                                        p2p, NULL);
1014         switch (type) {
1015         case P2P_FIND_START_WITH_FULL:
1016         case P2P_FIND_PROGRESSIVE:
1017                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1018                                          p2p->num_req_dev_types,
1019                                          p2p->req_dev_types, dev_id,
1020                                          DEV_PW_DEFAULT);
1021                 break;
1022         case P2P_FIND_ONLY_SOCIAL:
1023                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1024                                          p2p->num_req_dev_types,
1025                                          p2p->req_dev_types, dev_id,
1026                                          DEV_PW_DEFAULT);
1027                 break;
1028         default:
1029                 return -1;
1030         }
1031
1032         if (res == 0) {
1033                 p2p_dbg(p2p, "Running p2p_scan");
1034                 p2p->p2p_scan_running = 1;
1035                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1036                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1037                                        p2p, NULL);
1038         } else if (res == 1) {
1039                 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
1040                 res = 0;
1041                 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1042                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1043         } else {
1044                 p2p_dbg(p2p, "Failed to start p2p_scan");
1045                 p2p_set_state(p2p, P2P_IDLE);
1046                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1047         }
1048
1049         return res;
1050 }
1051
1052
1053 int p2p_other_scan_completed(struct p2p_data *p2p)
1054 {
1055         if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1056                 p2p_set_state(p2p, P2P_SEARCH);
1057                 p2p_search(p2p);
1058                 return 1;
1059         }
1060         if (p2p->state != P2P_SEARCH_WHEN_READY)
1061                 return 0;
1062         p2p_dbg(p2p, "Starting pending P2P find now that previous scan was completed");
1063         if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1064                      p2p->num_req_dev_types, p2p->req_dev_types,
1065                      p2p->find_dev_id, p2p->search_delay) < 0) {
1066                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1067                 return 0;
1068         }
1069         return 1;
1070 }
1071
1072
1073 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1074 {
1075         p2p_dbg(p2p, "Stopping find");
1076         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1077         p2p_clear_timeout(p2p);
1078         if (p2p->state == P2P_SEARCH ||
1079             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1080             p2p->state == P2P_SEARCH_WHEN_READY)
1081                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1082         p2p_set_state(p2p, P2P_IDLE);
1083         p2p_free_req_dev_types(p2p);
1084         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1085         if (p2p->go_neg_peer)
1086                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1087         p2p->go_neg_peer = NULL;
1088         p2p->sd_peer = NULL;
1089         p2p->invite_peer = NULL;
1090         p2p_stop_listen_for_freq(p2p, freq);
1091 }
1092
1093
1094 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1095 {
1096         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1097                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1098                 return;
1099         }
1100         if (p2p->in_listen) {
1101                 p2p->in_listen = 0;
1102                 p2p_clear_timeout(p2p);
1103         }
1104         if (p2p->drv_in_listen) {
1105                 /*
1106                  * The driver may not deliver callback to p2p_listen_end()
1107                  * when the operation gets canceled, so clear the internal
1108                  * variable that is tracking driver state.
1109                  */
1110                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1111                 p2p->drv_in_listen = 0;
1112         }
1113         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1114 }
1115
1116
1117 void p2p_stop_find(struct p2p_data *p2p)
1118 {
1119         p2p_stop_find_for_freq(p2p, 0);
1120 }
1121
1122
1123 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1124                                     unsigned int force_freq,
1125                                     unsigned int pref_freq)
1126 {
1127         u8 op_class, op_channel;
1128         unsigned int freq = force_freq ? force_freq : pref_freq;
1129
1130         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1131                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1132                 return -1;
1133         }
1134
1135         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) {
1136                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1137                         freq, op_class, op_channel);
1138                 return -1;
1139         }
1140
1141         p2p->op_reg_class = op_class;
1142         p2p->op_channel = op_channel;
1143
1144         if (force_freq) {
1145                 p2p->channels.reg_classes = 1;
1146                 p2p->channels.reg_class[0].channels = 1;
1147                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1148                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1149         } else {
1150                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1151                           sizeof(struct p2p_channels));
1152         }
1153
1154         return 0;
1155 }
1156
1157
1158 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1159 {
1160         u8 op_class, op_channel;
1161
1162         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1163             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1164             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1165             == 0) {
1166                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1167                 p2p->op_reg_class = op_class;
1168                 p2p->op_channel = op_channel;
1169         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1170                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1171                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1172                    == 0) {
1173                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1174                 p2p->op_reg_class = op_class;
1175                 p2p->op_channel = op_channel;
1176         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1177                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1178                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1179                                        &op_channel) == 0) {
1180                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1181                 p2p->op_reg_class = op_class;
1182                 p2p->op_channel = op_channel;
1183         } else {
1184                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1185                 p2p->op_channel = p2p->cfg->op_channel;
1186         }
1187
1188         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1189                   sizeof(struct p2p_channels));
1190 }
1191
1192
1193 /**
1194  * p2p_prepare_channel - Select operating channel for GO Negotiation
1195  * @p2p: P2P module context from p2p_init()
1196  * @dev: Selected peer device
1197  * @force_freq: Forced frequency in MHz or 0 if not forced
1198  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1199  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1200  *
1201  * This function is used to do initial operating channel selection for GO
1202  * Negotiation prior to having received peer information. The selected channel
1203  * may be further optimized in p2p_reselect_channel() once the peer information
1204  * is available.
1205  */
1206 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1207                         unsigned int force_freq, unsigned int pref_freq)
1208 {
1209         if (force_freq || pref_freq) {
1210                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0)
1211                         return -1;
1212         } else {
1213                 p2p_prepare_channel_best(p2p);
1214         }
1215         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1216                 p2p->op_reg_class, p2p->op_channel,
1217                 force_freq ? " (forced)" : "");
1218
1219         if (force_freq)
1220                 dev->flags |= P2P_DEV_FORCE_FREQ;
1221         else
1222                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1223
1224         return 0;
1225 }
1226
1227
1228 static void p2p_set_dev_persistent(struct p2p_device *dev,
1229                                    int persistent_group)
1230 {
1231         switch (persistent_group) {
1232         case 0:
1233                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1234                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1235                 break;
1236         case 1:
1237                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1238                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1239                 break;
1240         case 2:
1241                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1242                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1243                 break;
1244         }
1245 }
1246
1247
1248 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1249                 enum p2p_wps_method wps_method,
1250                 int go_intent, const u8 *own_interface_addr,
1251                 unsigned int force_freq, int persistent_group,
1252                 const u8 *force_ssid, size_t force_ssid_len,
1253                 int pd_before_go_neg, unsigned int pref_freq)
1254 {
1255         struct p2p_device *dev;
1256
1257         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1258                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1259                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1260                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1261                 wps_method, persistent_group, pd_before_go_neg);
1262
1263         dev = p2p_get_device(p2p, peer_addr);
1264         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1265                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1266                         MAC2STR(peer_addr));
1267                 return -1;
1268         }
1269
1270         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1271                 return -1;
1272
1273         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1274                 if (!(dev->info.dev_capab &
1275                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1276                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1277                                 " that is in a group and is not discoverable",
1278                                 MAC2STR(peer_addr));
1279                         return -1;
1280                 }
1281                 if (dev->oper_freq <= 0) {
1282                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1283                                 " with incomplete information",
1284                                 MAC2STR(peer_addr));
1285                         return -1;
1286                 }
1287
1288                 /*
1289                  * First, try to connect directly. If the peer does not
1290                  * acknowledge frames, assume it is sleeping and use device
1291                  * discoverability via the GO at that point.
1292                  */
1293         }
1294
1295         p2p->ssid_set = 0;
1296         if (force_ssid) {
1297                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1298                                   force_ssid, force_ssid_len);
1299                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1300                 p2p->ssid_len = force_ssid_len;
1301                 p2p->ssid_set = 1;
1302         }
1303
1304         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1305         dev->flags &= ~P2P_DEV_USER_REJECTED;
1306         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1307         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1308         if (pd_before_go_neg)
1309                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1310         else {
1311                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1312                 /*
1313                  * Assign dialog token and tie breaker here to use the same
1314                  * values in each retry within the same GO Negotiation exchange.
1315                  */
1316                 dev->dialog_token++;
1317                 if (dev->dialog_token == 0)
1318                         dev->dialog_token = 1;
1319                 dev->tie_breaker = p2p->next_tie_breaker;
1320                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1321         }
1322         dev->connect_reqs = 0;
1323         dev->go_neg_req_sent = 0;
1324         dev->go_state = UNKNOWN_GO;
1325         p2p_set_dev_persistent(dev, persistent_group);
1326         p2p->go_intent = go_intent;
1327         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1328
1329         if (p2p->state != P2P_IDLE)
1330                 p2p_stop_find(p2p);
1331
1332         if (p2p->after_scan_tx) {
1333                 /*
1334                  * We need to drop the pending frame to avoid issues with the
1335                  * new GO Negotiation, e.g., when the pending frame was from a
1336                  * previous attempt at starting a GO Negotiation.
1337                  */
1338                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1339                 os_free(p2p->after_scan_tx);
1340                 p2p->after_scan_tx = NULL;
1341         }
1342
1343         dev->wps_method = wps_method;
1344         dev->status = P2P_SC_SUCCESS;
1345
1346         if (p2p->p2p_scan_running) {
1347                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1348                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1349                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1350                 return 0;
1351         }
1352         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1353
1354         return p2p_connect_send(p2p, dev);
1355 }
1356
1357
1358 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1359                   enum p2p_wps_method wps_method,
1360                   int go_intent, const u8 *own_interface_addr,
1361                   unsigned int force_freq, int persistent_group,
1362                   const u8 *force_ssid, size_t force_ssid_len,
1363                   unsigned int pref_freq)
1364 {
1365         struct p2p_device *dev;
1366
1367         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1368                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1369                 " wps_method=%d  persistent_group=%d",
1370                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1371                 wps_method, persistent_group);
1372
1373         dev = p2p_get_device(p2p, peer_addr);
1374         if (dev == NULL) {
1375                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1376                         MAC2STR(peer_addr));
1377                 return -1;
1378         }
1379
1380         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1381                 return -1;
1382
1383         p2p->ssid_set = 0;
1384         if (force_ssid) {
1385                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1386                                   force_ssid, force_ssid_len);
1387                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1388                 p2p->ssid_len = force_ssid_len;
1389                 p2p->ssid_set = 1;
1390         }
1391
1392         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1393         dev->flags &= ~P2P_DEV_USER_REJECTED;
1394         dev->go_neg_req_sent = 0;
1395         dev->go_state = UNKNOWN_GO;
1396         p2p_set_dev_persistent(dev, persistent_group);
1397         p2p->go_intent = go_intent;
1398         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1399
1400         dev->wps_method = wps_method;
1401         dev->status = P2P_SC_SUCCESS;
1402
1403         return 0;
1404 }
1405
1406
1407 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1408                       struct p2p_device *dev, struct p2p_message *msg)
1409 {
1410         os_get_time(&dev->last_seen);
1411
1412         p2p_copy_wps_info(p2p, dev, 0, msg);
1413
1414         if (msg->listen_channel) {
1415                 int freq;
1416                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1417                                            msg->listen_channel[4]);
1418                 if (freq < 0) {
1419                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1420                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1421                                 msg->listen_channel[0],
1422                                 msg->listen_channel[1],
1423                                 msg->listen_channel[2],
1424                                 msg->listen_channel[3],
1425                                 msg->listen_channel[4]);
1426                 } else {
1427                         p2p_dbg(p2p, "Update peer " MACSTR
1428                                 " Listen channel: %u -> %u MHz",
1429                                 MAC2STR(dev->info.p2p_device_addr),
1430                                 dev->listen_freq, freq);
1431                         dev->listen_freq = freq;
1432                 }
1433         }
1434
1435         if (msg->wfd_subelems) {
1436                 wpabuf_free(dev->info.wfd_subelems);
1437                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1438         }
1439
1440         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1441                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1442                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1443         } else {
1444                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1445                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1446                         "listen_freq=%d",
1447                         MAC2STR(dev->info.p2p_device_addr),
1448                         dev->info.dev_capab, dev->info.group_capab,
1449                         dev->info.device_name, dev->listen_freq);
1450         }
1451
1452         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1453
1454         if (dev->flags & P2P_DEV_USER_REJECTED) {
1455                 p2p_dbg(p2p, "Do not report rejected device");
1456                 return;
1457         }
1458
1459         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1460                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1461         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1462 }
1463
1464
1465 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1466 {
1467         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1468         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1469         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1470                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1471         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1472 }
1473
1474
1475 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1476 {
1477         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1478         p2p_random(params->passphrase, 8);
1479         return 0;
1480 }
1481
1482
1483 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1484 {
1485         struct p2p_go_neg_results res;
1486         int go = peer->go_state == LOCAL_GO;
1487         struct p2p_channels intersection;
1488         int freqs;
1489         size_t i, j;
1490
1491         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1492                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1493
1494         os_memset(&res, 0, sizeof(res));
1495         res.role_go = go;
1496         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1497         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1498         res.wps_method = peer->wps_method;
1499         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1500                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1501                         res.persistent_group = 2;
1502                 else
1503                         res.persistent_group = 1;
1504         }
1505
1506         if (go) {
1507                 /* Setup AP mode for WPS provisioning */
1508                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1509                                                p2p->op_channel);
1510                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1511                 res.ssid_len = p2p->ssid_len;
1512                 p2p_random(res.passphrase, 8);
1513         } else {
1514                 res.freq = peer->oper_freq;
1515                 if (p2p->ssid_len) {
1516                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1517                         res.ssid_len = p2p->ssid_len;
1518                 }
1519         }
1520
1521         p2p_channels_intersect(&p2p->channels, &peer->channels,
1522                                &intersection);
1523         freqs = 0;
1524         for (i = 0; i < intersection.reg_classes; i++) {
1525                 struct p2p_reg_class *c = &intersection.reg_class[i];
1526                 if (freqs + 1 == P2P_MAX_CHANNELS)
1527                         break;
1528                 for (j = 0; j < c->channels; j++) {
1529                         int freq;
1530                         if (freqs + 1 == P2P_MAX_CHANNELS)
1531                                 break;
1532                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1533                         if (freq < 0)
1534                                 continue;
1535                         res.freq_list[freqs++] = freq;
1536                 }
1537         }
1538
1539         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1540
1541         p2p_clear_timeout(p2p);
1542         p2p->ssid_set = 0;
1543         peer->go_neg_req_sent = 0;
1544         peer->wps_method = WPS_NOT_READY;
1545
1546         p2p_set_state(p2p, P2P_PROVISIONING);
1547         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1548 }
1549
1550
1551 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1552                               const u8 *data, size_t len, int rx_freq)
1553 {
1554         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1555         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1556
1557         if (len < 1)
1558                 return;
1559
1560         switch (data[0]) {
1561         case P2P_GO_NEG_REQ:
1562                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1563                 break;
1564         case P2P_GO_NEG_RESP:
1565                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1566                 break;
1567         case P2P_GO_NEG_CONF:
1568                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1569                 break;
1570         case P2P_INVITATION_REQ:
1571                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1572                                            rx_freq);
1573                 break;
1574         case P2P_INVITATION_RESP:
1575                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1576                 break;
1577         case P2P_PROV_DISC_REQ:
1578                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1579                 break;
1580         case P2P_PROV_DISC_RESP:
1581                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1582                 break;
1583         case P2P_DEV_DISC_REQ:
1584                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1585                 break;
1586         case P2P_DEV_DISC_RESP:
1587                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1588                 break;
1589         default:
1590                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1591                         data[0]);
1592                 break;
1593         }
1594 }
1595
1596
1597 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1598                                  const u8 *sa, const u8 *bssid, const u8 *data,
1599                                  size_t len, int freq)
1600 {
1601         if (len < 1)
1602                 return;
1603
1604         switch (data[0]) {
1605         case WLAN_PA_VENDOR_SPECIFIC:
1606                 data++;
1607                 len--;
1608                 if (len < 3)
1609                         return;
1610                 if (WPA_GET_BE24(data) != OUI_WFA)
1611                         return;
1612
1613                 data += 3;
1614                 len -= 3;
1615                 if (len < 1)
1616                         return;
1617
1618                 if (*data != P2P_OUI_TYPE)
1619                         return;
1620
1621                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1622                 break;
1623         case WLAN_PA_GAS_INITIAL_REQ:
1624                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1625                 break;
1626         case WLAN_PA_GAS_INITIAL_RESP:
1627                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1628                 break;
1629         case WLAN_PA_GAS_COMEBACK_REQ:
1630                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1631                 break;
1632         case WLAN_PA_GAS_COMEBACK_RESP:
1633                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1634                 break;
1635         }
1636 }
1637
1638
1639 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1640                    const u8 *bssid, u8 category,
1641                    const u8 *data, size_t len, int freq)
1642 {
1643         if (category == WLAN_ACTION_PUBLIC) {
1644                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1645                 return;
1646         }
1647
1648         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1649                 return;
1650
1651         if (len < 4)
1652                 return;
1653
1654         if (WPA_GET_BE24(data) != OUI_WFA)
1655                 return;
1656         data += 3;
1657         len -= 3;
1658
1659         if (*data != P2P_OUI_TYPE)
1660                 return;
1661         data++;
1662         len--;
1663
1664         /* P2P action frame */
1665         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1666         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1667
1668         if (len < 1)
1669                 return;
1670         switch (data[0]) {
1671         case P2P_NOA:
1672                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1673                 /* TODO */
1674                 break;
1675         case P2P_PRESENCE_REQ:
1676                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1677                 break;
1678         case P2P_PRESENCE_RESP:
1679                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1680                 break;
1681         case P2P_GO_DISC_REQ:
1682                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1683                 break;
1684         default:
1685                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1686                 break;
1687         }
1688 }
1689
1690
1691 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1692 {
1693         struct p2p_data *p2p = eloop_ctx;
1694         if (p2p->go_neg_peer == NULL)
1695                 return;
1696         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1697         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1698         p2p_connect_send(p2p, p2p->go_neg_peer);
1699 }
1700
1701
1702 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1703 {
1704         struct p2p_data *p2p = eloop_ctx;
1705         if (p2p->invite_peer == NULL)
1706                 return;
1707         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1708         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1709 }
1710
1711
1712 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1713                                        const u8 *ie, size_t ie_len)
1714 {
1715         struct p2p_message msg;
1716         struct p2p_device *dev;
1717
1718         os_memset(&msg, 0, sizeof(msg));
1719         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1720         {
1721                 p2p_parse_free(&msg);
1722                 return; /* not a P2P probe */
1723         }
1724
1725         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1726             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1727             != 0) {
1728                 /* The Probe Request is not part of P2P Device Discovery. It is
1729                  * not known whether the source address of the frame is the P2P
1730                  * Device Address or P2P Interface Address. Do not add a new
1731                  * peer entry based on this frames.
1732                  */
1733                 p2p_parse_free(&msg);
1734                 return;
1735         }
1736
1737         dev = p2p_get_device(p2p, addr);
1738         if (dev) {
1739                 if (dev->country[0] == 0 && msg.listen_channel)
1740                         os_memcpy(dev->country, msg.listen_channel, 3);
1741                 os_get_time(&dev->last_seen);
1742                 p2p_parse_free(&msg);
1743                 return; /* already known */
1744         }
1745
1746         dev = p2p_create_device(p2p, addr);
1747         if (dev == NULL) {
1748                 p2p_parse_free(&msg);
1749                 return;
1750         }
1751
1752         os_get_time(&dev->last_seen);
1753         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1754
1755         if (msg.listen_channel) {
1756                 os_memcpy(dev->country, msg.listen_channel, 3);
1757                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1758                                                        msg.listen_channel[4]);
1759         }
1760
1761         p2p_copy_wps_info(p2p, dev, 1, &msg);
1762
1763         if (msg.wfd_subelems) {
1764                 wpabuf_free(dev->info.wfd_subelems);
1765                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1766         }
1767
1768         p2p_parse_free(&msg);
1769
1770         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1771                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1772                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1773                 dev->info.group_capab, dev->info.device_name,
1774                 dev->listen_freq);
1775 }
1776
1777
1778 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1779                                                 const u8 *addr,
1780                                                 struct p2p_message *msg)
1781 {
1782         struct p2p_device *dev;
1783
1784         dev = p2p_get_device(p2p, addr);
1785         if (dev) {
1786                 os_get_time(&dev->last_seen);
1787                 return dev; /* already known */
1788         }
1789
1790         dev = p2p_create_device(p2p, addr);
1791         if (dev == NULL)
1792                 return NULL;
1793
1794         p2p_add_dev_info(p2p, addr, dev, msg);
1795
1796         return dev;
1797 }
1798
1799
1800 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1801 {
1802         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1803                 return 1;
1804         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1805             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1806             WPA_GET_BE16(&req_dev_type[6]) == 0)
1807                 return 1; /* Category match with wildcard OUI/sub-category */
1808         return 0;
1809 }
1810
1811
1812 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1813                         size_t num_req_dev_type)
1814 {
1815         size_t i;
1816         for (i = 0; i < num_req_dev_type; i++) {
1817                 if (dev_type_match(dev_type, req_dev_type[i]))
1818                         return 1;
1819         }
1820         return 0;
1821 }
1822
1823
1824 /**
1825  * p2p_match_dev_type - Match local device type with requested type
1826  * @p2p: P2P module context from p2p_init()
1827  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1828  * Returns: 1 on match, 0 on mismatch
1829  *
1830  * This function can be used to match the Requested Device Type attribute in
1831  * WPS IE with the local device types for deciding whether to reply to a Probe
1832  * Request frame.
1833  */
1834 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1835 {
1836         struct wps_parse_attr attr;
1837         size_t i;
1838
1839         if (wps_parse_msg(wps, &attr))
1840                 return 1; /* assume no Requested Device Type attributes */
1841
1842         if (attr.num_req_dev_type == 0)
1843                 return 1; /* no Requested Device Type attributes -> match */
1844
1845         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1846                                 attr.num_req_dev_type))
1847                 return 1; /* Own Primary Device Type matches */
1848
1849         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1850                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1851                                         attr.req_dev_type,
1852                                         attr.num_req_dev_type))
1853                 return 1; /* Own Secondary Device Type matches */
1854
1855         /* No matching device type found */
1856         return 0;
1857 }
1858
1859
1860 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1861 {
1862         struct wpabuf *buf;
1863         u8 *len;
1864         int pw_id = -1;
1865         size_t extra = 0;
1866
1867 #ifdef CONFIG_WIFI_DISPLAY
1868         if (p2p->wfd_ie_probe_resp)
1869                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1870 #endif /* CONFIG_WIFI_DISPLAY */
1871
1872         buf = wpabuf_alloc(1000 + extra);
1873         if (buf == NULL)
1874                 return NULL;
1875
1876         if (p2p->go_neg_peer) {
1877                 /* Advertise immediate availability of WPS credential */
1878                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1879         }
1880
1881         p2p_build_wps_ie(p2p, buf, pw_id, 1);
1882
1883 #ifdef CONFIG_WIFI_DISPLAY
1884         if (p2p->wfd_ie_probe_resp)
1885                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1886 #endif /* CONFIG_WIFI_DISPLAY */
1887
1888         /* P2P IE */
1889         len = p2p_buf_add_ie_hdr(buf);
1890         p2p_buf_add_capability(buf, p2p->dev_capab &
1891                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1892         if (p2p->ext_listen_interval)
1893                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1894                                               p2p->ext_listen_interval);
1895         p2p_buf_add_device_info(buf, p2p, NULL);
1896         p2p_buf_update_ie_hdr(buf, len);
1897
1898         return buf;
1899 }
1900
1901
1902 static int is_11b(u8 rate)
1903 {
1904         return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1905 }
1906
1907
1908 static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1909 {
1910         int num_11b = 0, num_others = 0;
1911         int i;
1912
1913         if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1914                 return 0;
1915
1916         for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1917                 if (is_11b(elems->supp_rates[i]))
1918                         num_11b++;
1919                 else
1920                         num_others++;
1921         }
1922
1923         for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1924              i++) {
1925                 if (is_11b(elems->ext_supp_rates[i]))
1926                         num_11b++;
1927                 else
1928                         num_others++;
1929         }
1930
1931         return num_11b > 0 && num_others == 0;
1932 }
1933
1934
1935 static enum p2p_probe_req_status
1936 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1937                 const u8 *bssid, const u8 *ie, size_t ie_len)
1938 {
1939         struct ieee802_11_elems elems;
1940         struct wpabuf *buf;
1941         struct ieee80211_mgmt *resp;
1942         struct p2p_message msg;
1943         struct wpabuf *ies;
1944
1945         if (!p2p->in_listen || !p2p->drv_in_listen) {
1946                 /* not in Listen state - ignore Probe Request */
1947                 return P2P_PREQ_NOT_LISTEN;
1948         }
1949
1950         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1951             ParseFailed) {
1952                 /* Ignore invalid Probe Request frames */
1953                 return P2P_PREQ_MALFORMED;
1954         }
1955
1956         if (elems.p2p == NULL) {
1957                 /* not a P2P probe - ignore it */
1958                 return P2P_PREQ_NOT_P2P;
1959         }
1960
1961         if (dst && !is_broadcast_ether_addr(dst) &&
1962             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1963                 /* Not sent to the broadcast address or our P2P Device Address
1964                  */
1965                 return P2P_PREQ_NOT_PROCESSED;
1966         }
1967
1968         if (bssid && !is_broadcast_ether_addr(bssid)) {
1969                 /* Not sent to the Wildcard BSSID */
1970                 return P2P_PREQ_NOT_PROCESSED;
1971         }
1972
1973         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1974             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1975             0) {
1976                 /* not using P2P Wildcard SSID - ignore */
1977                 return P2P_PREQ_NOT_PROCESSED;
1978         }
1979
1980         if (supp_rates_11b_only(&elems)) {
1981                 /* Indicates support for 11b rates only */
1982                 return P2P_PREQ_NOT_P2P;
1983         }
1984
1985         os_memset(&msg, 0, sizeof(msg));
1986         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1987                 /* Could not parse P2P attributes */
1988                 return P2P_PREQ_NOT_P2P;
1989         }
1990
1991         if (msg.device_id &&
1992             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1993                 /* Device ID did not match */
1994                 p2p_parse_free(&msg);
1995                 return P2P_PREQ_NOT_PROCESSED;
1996         }
1997
1998         /* Check Requested Device Type match */
1999         if (msg.wps_attributes &&
2000             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2001                 /* No match with Requested Device Type */
2002                 p2p_parse_free(&msg);
2003                 return P2P_PREQ_NOT_PROCESSED;
2004         }
2005         p2p_parse_free(&msg);
2006
2007         if (!p2p->cfg->send_probe_resp) {
2008                 /* Response generated elsewhere */
2009                 return P2P_PREQ_NOT_PROCESSED;
2010         }
2011
2012         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2013
2014         /*
2015          * We do not really have a specific BSS that this frame is advertising,
2016          * so build a frame that has some information in valid format. This is
2017          * really only used for discovery purposes, not to learn exact BSS
2018          * parameters.
2019          */
2020         ies = p2p_build_probe_resp_ies(p2p);
2021         if (ies == NULL)
2022                 return P2P_PREQ_NOT_PROCESSED;
2023
2024         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2025         if (buf == NULL) {
2026                 wpabuf_free(ies);
2027                 return P2P_PREQ_NOT_PROCESSED;
2028         }
2029
2030         resp = NULL;
2031         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2032
2033         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2034                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2035         os_memcpy(resp->da, addr, ETH_ALEN);
2036         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2037         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2038         resp->u.probe_resp.beacon_int = host_to_le16(100);
2039         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2040         resp->u.probe_resp.capab_info =
2041                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2042                              WLAN_CAPABILITY_PRIVACY |
2043                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2044
2045         wpabuf_put_u8(buf, WLAN_EID_SSID);
2046         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2047         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2048
2049         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2050         wpabuf_put_u8(buf, 8);
2051         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2052         wpabuf_put_u8(buf, 90 / 5);
2053         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2054         wpabuf_put_u8(buf, 180 / 5);
2055         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2056         wpabuf_put_u8(buf, 360 / 5);
2057         wpabuf_put_u8(buf, 480 / 5);
2058         wpabuf_put_u8(buf, 540 / 5);
2059
2060         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2061         wpabuf_put_u8(buf, 1);
2062         wpabuf_put_u8(buf, p2p->cfg->channel);
2063
2064         wpabuf_put_buf(buf, ies);
2065         wpabuf_free(ies);
2066
2067         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2068
2069         wpabuf_free(buf);
2070
2071         return P2P_PREQ_NOT_PROCESSED;
2072 }
2073
2074
2075 enum p2p_probe_req_status
2076 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2077                  const u8 *bssid, const u8 *ie, size_t ie_len)
2078 {
2079         enum p2p_probe_req_status res;
2080
2081         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2082
2083         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2084
2085         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2086             p2p->go_neg_peer &&
2087             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2088             == 0 &&
2089             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2090                 /* Received a Probe Request from GO Negotiation peer */
2091                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2092                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2093                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2094                 return P2P_PREQ_PROCESSED;
2095         }
2096
2097         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2098             p2p->invite_peer &&
2099             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2100             == 0) {
2101                 /* Received a Probe Request from Invite peer */
2102                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2103                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2104                 return P2P_PREQ_PROCESSED;
2105         }
2106
2107         return res;
2108 }
2109
2110
2111 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2112                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2113 {
2114         struct wpabuf *tmp;
2115         u8 *lpos;
2116         size_t tmplen;
2117         int res;
2118         u8 group_capab;
2119
2120         if (p2p_ie == NULL)
2121                 return 0; /* WLAN AP is not a P2P manager */
2122
2123         /*
2124          * (Re)Association Request - P2P IE
2125          * P2P Capability attribute (shall be present)
2126          * P2P Interface attribute (present if concurrent device and
2127          *      P2P Management is enabled)
2128          */
2129         tmp = wpabuf_alloc(200);
2130         if (tmp == NULL)
2131                 return -1;
2132
2133         lpos = p2p_buf_add_ie_hdr(tmp);
2134         group_capab = 0;
2135         if (p2p->num_groups > 0) {
2136                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2137                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2138                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2139                     p2p->cross_connect)
2140                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2141         }
2142         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2143         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2144             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2145                 p2p_buf_add_p2p_interface(tmp, p2p);
2146         p2p_buf_update_ie_hdr(tmp, lpos);
2147
2148         tmplen = wpabuf_len(tmp);
2149         if (tmplen > len)
2150                 res = -1;
2151         else {
2152                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2153                 res = tmplen;
2154         }
2155         wpabuf_free(tmp);
2156
2157         return res;
2158 }
2159
2160
2161 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2162                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2163 {
2164         struct wpabuf *tmp;
2165         u8 *lpos;
2166         struct p2p_device *peer;
2167         size_t tmplen;
2168         int res;
2169         size_t extra = 0;
2170
2171         if (!p2p_group)
2172                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2173
2174 #ifdef CONFIG_WIFI_DISPLAY
2175         if (p2p->wfd_ie_assoc_req)
2176                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2177 #endif /* CONFIG_WIFI_DISPLAY */
2178
2179         /*
2180          * (Re)Association Request - P2P IE
2181          * P2P Capability attribute (shall be present)
2182          * Extended Listen Timing (may be present)
2183          * P2P Device Info attribute (shall be present)
2184          */
2185         tmp = wpabuf_alloc(200 + extra);
2186         if (tmp == NULL)
2187                 return -1;
2188
2189 #ifdef CONFIG_WIFI_DISPLAY
2190         if (p2p->wfd_ie_assoc_req)
2191                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2192 #endif /* CONFIG_WIFI_DISPLAY */
2193
2194         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2195
2196         lpos = p2p_buf_add_ie_hdr(tmp);
2197         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2198         if (p2p->ext_listen_interval)
2199                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2200                                               p2p->ext_listen_interval);
2201         p2p_buf_add_device_info(tmp, p2p, peer);
2202         p2p_buf_update_ie_hdr(tmp, lpos);
2203
2204         tmplen = wpabuf_len(tmp);
2205         if (tmplen > len)
2206                 res = -1;
2207         else {
2208                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2209                 res = tmplen;
2210         }
2211         wpabuf_free(tmp);
2212
2213         return res;
2214 }
2215
2216
2217 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2218 {
2219         struct wpabuf *p2p_ie;
2220         int ret;
2221
2222         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2223         if (p2p_ie == NULL)
2224                 return 0;
2225
2226         ret = p2p_attr_text(p2p_ie, buf, end);
2227         wpabuf_free(p2p_ie);
2228         return ret;
2229 }
2230
2231
2232 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2233 {
2234         struct p2p_message msg;
2235
2236         os_memset(&msg, 0, sizeof(msg));
2237         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2238                 return -1;
2239
2240         if (msg.p2p_device_addr) {
2241                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2242                 return 0;
2243         } else if (msg.device_id) {
2244                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2245                 return 0;
2246         }
2247         return -1;
2248 }
2249
2250
2251 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2252 {
2253         struct wpabuf *p2p_ie;
2254         int ret;
2255
2256         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2257                                              P2P_IE_VENDOR_TYPE);
2258         if (p2p_ie == NULL)
2259                 return -1;
2260         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2261         wpabuf_free(p2p_ie);
2262         return ret;
2263 }
2264
2265
2266 static void p2p_clear_go_neg(struct p2p_data *p2p)
2267 {
2268         p2p->go_neg_peer = NULL;
2269         p2p_clear_timeout(p2p);
2270         p2p_set_state(p2p, P2P_IDLE);
2271 }
2272
2273
2274 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2275 {
2276         if (p2p->go_neg_peer == NULL) {
2277                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2278                 return; /* No pending Group Formation */
2279         }
2280
2281         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2282             0) {
2283                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2284                         MACSTR " (GO Negotiation peer " MACSTR ")",
2285                         MAC2STR(mac_addr),
2286                         MAC2STR(p2p->go_neg_peer->intended_addr));
2287                 return; /* Ignore unexpected peer address */
2288         }
2289
2290         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2291                 MAC2STR(mac_addr));
2292
2293         p2p_clear_go_neg(p2p);
2294 }
2295
2296
2297 void p2p_group_formation_failed(struct p2p_data *p2p)
2298 {
2299         if (p2p->go_neg_peer == NULL) {
2300                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2301                 return; /* No pending Group Formation */
2302         }
2303
2304         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2305                 MAC2STR(p2p->go_neg_peer->intended_addr));
2306
2307         p2p_clear_go_neg(p2p);
2308 }
2309
2310
2311 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2312 {
2313         struct p2p_data *p2p;
2314
2315         if (cfg->max_peers < 1)
2316                 return NULL;
2317
2318         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2319         if (p2p == NULL)
2320                 return NULL;
2321         p2p->cfg = (struct p2p_config *) (p2p + 1);
2322         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2323         if (cfg->dev_name)
2324                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2325         if (cfg->manufacturer)
2326                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2327         if (cfg->model_name)
2328                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2329         if (cfg->model_number)
2330                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2331         if (cfg->serial_number)
2332                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2333         if (cfg->pref_chan) {
2334                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2335                                                 sizeof(struct p2p_channel));
2336                 if (p2p->cfg->pref_chan) {
2337                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2338                                   cfg->num_pref_chan *
2339                                   sizeof(struct p2p_channel));
2340                 } else
2341                         p2p->cfg->num_pref_chan = 0;
2342         }
2343
2344         p2p->min_disc_int = 1;
2345         p2p->max_disc_int = 3;
2346         p2p->max_disc_tu = -1;
2347
2348         os_get_random(&p2p->next_tie_breaker, 1);
2349         p2p->next_tie_breaker &= 0x01;
2350         if (cfg->sd_request)
2351                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2352         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2353         if (cfg->concurrent_operations)
2354                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2355         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2356
2357         dl_list_init(&p2p->devices);
2358
2359         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2360                                p2p_expiration_timeout, p2p, NULL);
2361
2362         p2p->go_timeout = 100;
2363         p2p->client_timeout = 20;
2364
2365         return p2p;
2366 }
2367
2368
2369 void p2p_deinit(struct p2p_data *p2p)
2370 {
2371 #ifdef CONFIG_WIFI_DISPLAY
2372         wpabuf_free(p2p->wfd_ie_beacon);
2373         wpabuf_free(p2p->wfd_ie_probe_req);
2374         wpabuf_free(p2p->wfd_ie_probe_resp);
2375         wpabuf_free(p2p->wfd_ie_assoc_req);
2376         wpabuf_free(p2p->wfd_ie_invitation);
2377         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2378         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2379         wpabuf_free(p2p->wfd_ie_go_neg);
2380         wpabuf_free(p2p->wfd_dev_info);
2381         wpabuf_free(p2p->wfd_assoc_bssid);
2382         wpabuf_free(p2p->wfd_coupled_sink_info);
2383 #endif /* CONFIG_WIFI_DISPLAY */
2384
2385         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2386         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2387         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2388         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2389         p2p_flush(p2p);
2390         p2p_free_req_dev_types(p2p);
2391         os_free(p2p->cfg->dev_name);
2392         os_free(p2p->cfg->manufacturer);
2393         os_free(p2p->cfg->model_name);
2394         os_free(p2p->cfg->model_number);
2395         os_free(p2p->cfg->serial_number);
2396         os_free(p2p->cfg->pref_chan);
2397         os_free(p2p->groups);
2398         wpabuf_free(p2p->sd_resp);
2399         os_free(p2p->after_scan_tx);
2400         p2p_remove_wps_vendor_extensions(p2p);
2401         os_free(p2p);
2402 }
2403
2404
2405 void p2p_flush(struct p2p_data *p2p)
2406 {
2407         struct p2p_device *dev, *prev;
2408         p2p_stop_find(p2p);
2409         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2410                               list) {
2411                 dl_list_del(&dev->list);
2412                 p2p_device_free(p2p, dev);
2413         }
2414         p2p_free_sd_queries(p2p);
2415         os_free(p2p->after_scan_tx);
2416         p2p->after_scan_tx = NULL;
2417 }
2418
2419
2420 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2421 {
2422         struct p2p_device *dev;
2423
2424         dev = p2p_get_device(p2p, addr);
2425         if (dev == NULL)
2426                 return -1;
2427
2428         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2429
2430         if (p2p->go_neg_peer == dev)
2431                 p2p->go_neg_peer = NULL;
2432
2433         dev->wps_method = WPS_NOT_READY;
2434         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2435         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2436
2437         /* Check if after_scan_tx is for this peer. If so free it */
2438         if (p2p->after_scan_tx &&
2439             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2440                 os_free(p2p->after_scan_tx);
2441                 p2p->after_scan_tx = NULL;
2442         }
2443
2444         return 0;
2445 }
2446
2447
2448 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2449 {
2450         os_free(p2p->cfg->dev_name);
2451         if (dev_name) {
2452                 p2p->cfg->dev_name = os_strdup(dev_name);
2453                 if (p2p->cfg->dev_name == NULL)
2454                         return -1;
2455         } else
2456                 p2p->cfg->dev_name = NULL;
2457         return 0;
2458 }
2459
2460
2461 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2462 {
2463         os_free(p2p->cfg->manufacturer);
2464         p2p->cfg->manufacturer = NULL;
2465         if (manufacturer) {
2466                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2467                 if (p2p->cfg->manufacturer == NULL)
2468                         return -1;
2469         }
2470
2471         return 0;
2472 }
2473
2474
2475 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2476 {
2477         os_free(p2p->cfg->model_name);
2478         p2p->cfg->model_name = NULL;
2479         if (model_name) {
2480                 p2p->cfg->model_name = os_strdup(model_name);
2481                 if (p2p->cfg->model_name == NULL)
2482                         return -1;
2483         }
2484
2485         return 0;
2486 }
2487
2488
2489 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2490 {
2491         os_free(p2p->cfg->model_number);
2492         p2p->cfg->model_number = NULL;
2493         if (model_number) {
2494                 p2p->cfg->model_number = os_strdup(model_number);
2495                 if (p2p->cfg->model_number == NULL)
2496                         return -1;
2497         }
2498
2499         return 0;
2500 }
2501
2502
2503 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2504 {
2505         os_free(p2p->cfg->serial_number);
2506         p2p->cfg->serial_number = NULL;
2507         if (serial_number) {
2508                 p2p->cfg->serial_number = os_strdup(serial_number);
2509                 if (p2p->cfg->serial_number == NULL)
2510                         return -1;
2511         }
2512
2513         return 0;
2514 }
2515
2516
2517 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2518 {
2519         p2p->cfg->config_methods = config_methods;
2520 }
2521
2522
2523 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2524 {
2525         os_memcpy(p2p->cfg->uuid, uuid, 16);
2526 }
2527
2528
2529 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2530 {
2531         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2532         return 0;
2533 }
2534
2535
2536 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2537                           size_t num_dev_types)
2538 {
2539         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2540                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2541         p2p->cfg->num_sec_dev_types = num_dev_types;
2542         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2543         return 0;
2544 }
2545
2546
2547 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2548 {
2549         int i;
2550
2551         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2552                 wpabuf_free(p2p->wps_vendor_ext[i]);
2553                 p2p->wps_vendor_ext[i] = NULL;
2554         }
2555 }
2556
2557
2558 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2559                                  const struct wpabuf *vendor_ext)
2560 {
2561         int i;
2562
2563         if (vendor_ext == NULL)
2564                 return -1;
2565
2566         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2567                 if (p2p->wps_vendor_ext[i] == NULL)
2568                         break;
2569         }
2570         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2571                 return -1;
2572
2573         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2574         if (p2p->wps_vendor_ext[i] == NULL)
2575                 return -1;
2576
2577         return 0;
2578 }
2579
2580
2581 int p2p_set_country(struct p2p_data *p2p, const char *country)
2582 {
2583         os_memcpy(p2p->cfg->country, country, 3);
2584         return 0;
2585 }
2586
2587
2588 void p2p_continue_find(struct p2p_data *p2p)
2589 {
2590         struct p2p_device *dev;
2591         p2p_set_state(p2p, P2P_SEARCH);
2592         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2593                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2594                         if (p2p_start_sd(p2p, dev) == 0)
2595                                 return;
2596                         else
2597                                 break;
2598                 } else if (dev->req_config_methods &&
2599                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2600                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2601                                 MACSTR " (config methods 0x%x)",
2602                                 MAC2STR(dev->info.p2p_device_addr),
2603                                 dev->req_config_methods);
2604                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2605                                 return;
2606                 }
2607         }
2608
2609         p2p_listen_in_find(p2p, 1);
2610 }
2611
2612
2613 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2614 {
2615         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2616                 success);
2617         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2618
2619         if (!success) {
2620                 if (p2p->sd_peer) {
2621                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2622                         p2p->sd_peer = NULL;
2623                 }
2624                 p2p_continue_find(p2p);
2625                 return;
2626         }
2627
2628         if (p2p->sd_peer == NULL) {
2629                 p2p_dbg(p2p, "No SD peer entry known");
2630                 p2p_continue_find(p2p);
2631                 return;
2632         }
2633
2634         /* Wait for response from the peer */
2635         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2636         p2p_set_timeout(p2p, 0, 200000);
2637 }
2638
2639
2640 /**
2641  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2642  * @p2p: P2P module context from p2p_init()
2643  */
2644 static void p2p_retry_pd(struct p2p_data *p2p)
2645 {
2646         struct p2p_device *dev;
2647
2648         if (p2p->state != P2P_IDLE)
2649                 return;
2650
2651         /*
2652          * Retry the prov disc req attempt only for the peer that the user had
2653          * requested.
2654          */
2655
2656         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2657                 if (os_memcmp(p2p->pending_pd_devaddr,
2658                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2659                         continue;
2660                 if (!dev->req_config_methods)
2661                         continue;
2662
2663                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2664                         MACSTR " (config methods 0x%x)",
2665                         MAC2STR(dev->info.p2p_device_addr),
2666                         dev->req_config_methods);
2667                 p2p_send_prov_disc_req(p2p, dev,
2668                                        dev->flags & P2P_DEV_PD_FOR_JOIN, 0);
2669                 return;
2670         }
2671 }
2672
2673
2674 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2675 {
2676         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2677                 success);
2678
2679         /*
2680          * Postpone resetting the pending action state till after we actually
2681          * time out. This allows us to take some action like notifying any
2682          * interested parties about no response to the request.
2683          *
2684          * When the timer (below) goes off we check in IDLE, SEARCH, or
2685          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2686          * requests in, if this was still pending and then raise notification.
2687          */
2688
2689         if (!success) {
2690                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2691
2692                 if (p2p->user_initiated_pd &&
2693                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2694                 {
2695                         /* Retry request from timeout to avoid busy loops */
2696                         p2p->pending_action_state = P2P_PENDING_PD;
2697                         p2p_set_timeout(p2p, 0, 50000);
2698                 } else if (p2p->state != P2P_IDLE)
2699                         p2p_continue_find(p2p);
2700                 else if (p2p->user_initiated_pd) {
2701                         p2p->pending_action_state = P2P_PENDING_PD;
2702                         p2p_set_timeout(p2p, 0, 300000);
2703                 }
2704                 return;
2705         }
2706
2707         /*
2708          * This postponing, of resetting pending_action_state, needs to be
2709          * done only for user initiated PD requests and not internal ones.
2710          */
2711         if (p2p->user_initiated_pd)
2712                 p2p->pending_action_state = P2P_PENDING_PD;
2713         else
2714                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2715
2716         /* Wait for response from the peer */
2717         if (p2p->state == P2P_SEARCH)
2718                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2719         p2p_set_timeout(p2p, 0, 200000);
2720 }
2721
2722
2723 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2724                          struct os_time *rx_time, int level, const u8 *ies,
2725                          size_t ies_len)
2726 {
2727         if (os_time_before(rx_time, &p2p->find_start)) {
2728                 /*
2729                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2730                  * scan results for relatively long time. To avoid reporting
2731                  * stale information, update P2P peers only based on results
2732                  * that have based on frames received after the last p2p_find
2733                  * operation was started.
2734                  */
2735                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2736                         " (rx_time=%u.%06u)",
2737                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2738                         (unsigned int) rx_time->usec);
2739                 return 0;
2740         }
2741
2742         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2743
2744         return 0;
2745 }
2746
2747
2748 void p2p_scan_res_handled(struct p2p_data *p2p)
2749 {
2750         if (!p2p->p2p_scan_running) {
2751                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2752         }
2753         p2p->p2p_scan_running = 0;
2754         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2755
2756         if (p2p_run_after_scan(p2p))
2757                 return;
2758         if (p2p->state == P2P_SEARCH)
2759                 p2p_continue_find(p2p);
2760 }
2761
2762
2763 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2764 {
2765         u8 *len;
2766
2767 #ifdef CONFIG_WIFI_DISPLAY
2768         if (p2p->wfd_ie_probe_req)
2769                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2770 #endif /* CONFIG_WIFI_DISPLAY */
2771
2772         len = p2p_buf_add_ie_hdr(ies);
2773         p2p_buf_add_capability(ies, p2p->dev_capab &
2774                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2775         if (dev_id)
2776                 p2p_buf_add_device_id(ies, dev_id);
2777         if (p2p->cfg->reg_class && p2p->cfg->channel)
2778                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2779                                            p2p->cfg->reg_class,
2780                                            p2p->cfg->channel);
2781         if (p2p->ext_listen_interval)
2782                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2783                                               p2p->ext_listen_interval);
2784         /* TODO: p2p_buf_add_operating_channel() if GO */
2785         p2p_buf_update_ie_hdr(ies, len);
2786 }
2787
2788
2789 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2790 {
2791         size_t len = 100;
2792
2793 #ifdef CONFIG_WIFI_DISPLAY
2794         if (p2p && p2p->wfd_ie_probe_req)
2795                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2796 #endif /* CONFIG_WIFI_DISPLAY */
2797
2798         return len;
2799 }
2800
2801
2802 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2803 {
2804         return p2p_attr_text(p2p_ie, buf, end);
2805 }
2806
2807
2808 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2809 {
2810         struct p2p_device *dev = p2p->go_neg_peer;
2811         int timeout;
2812
2813         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2814
2815         if (dev == NULL) {
2816                 p2p_dbg(p2p, "No pending GO Negotiation");
2817                 return;
2818         }
2819
2820         if (success) {
2821                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2822                         p2p_set_state(p2p, P2P_IDLE);
2823                         return;
2824                 }
2825         } else if (dev->go_neg_req_sent) {
2826                 /* Cancel the increment from p2p_connect_send() on failure */
2827                 dev->go_neg_req_sent--;
2828         }
2829
2830         if (!success &&
2831             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2832             !is_zero_ether_addr(dev->member_in_go_dev)) {
2833                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2834                         MAC2STR(dev->info.p2p_device_addr));
2835                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2836                 p2p_send_dev_disc_req(p2p, dev);
2837                 return;
2838         }
2839
2840         /*
2841          * Use P2P find, if needed, to find the other device from its listen
2842          * channel.
2843          */
2844         p2p_set_state(p2p, P2P_CONNECT);
2845         timeout = success ? 500000 : 100000;
2846         if (!success && p2p->go_neg_peer &&
2847             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2848                 unsigned int r;
2849                 /*
2850                  * Peer is expected to wait our response and we will skip the
2851                  * listen phase. Add some randomness to the wait time here to
2852                  * make it less likely to hit cases where we could end up in
2853                  * sync with peer not listening.
2854                  */
2855                 os_get_random((u8 *) &r, sizeof(r));
2856                 timeout += r % 100000;
2857         }
2858         p2p_set_timeout(p2p, 0, timeout);
2859 }
2860
2861
2862 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2863 {
2864         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2865                 success);
2866         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2867                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2868                 return;
2869         }
2870         p2p_set_state(p2p, P2P_CONNECT);
2871         p2p_set_timeout(p2p, 0, 500000);
2872 }
2873
2874
2875 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2876                                        const u8 *addr)
2877 {
2878         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2879         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2880                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2881                                   p2p->go_neg_peer->status);
2882         } else if (success) {
2883                 struct p2p_device *dev;
2884                 dev = p2p_get_device(p2p, addr);
2885                 if (dev &&
2886                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2887                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2888         }
2889 }
2890
2891
2892 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2893                                enum p2p_send_action_result result)
2894 {
2895         struct p2p_device *dev;
2896
2897         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2898         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2899         if (result == P2P_SEND_ACTION_FAILED) {
2900                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2901                 return;
2902         }
2903         if (result == P2P_SEND_ACTION_NO_ACK) {
2904                 /*
2905                  * It looks like the TX status for GO Negotiation Confirm is
2906                  * often showing failure even when the peer has actually
2907                  * received the frame. Since the peer may change channels
2908                  * immediately after having received the frame, we may not see
2909                  * an Ack for retries, so just dropping a single frame may
2910                  * trigger this. To allow the group formation to succeed if the
2911                  * peer did indeed receive the frame, continue regardless of
2912                  * the TX status.
2913                  */
2914                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2915         }
2916
2917         dev = p2p->go_neg_peer;
2918         if (dev == NULL)
2919                 return;
2920
2921         p2p_go_complete(p2p, dev);
2922 }
2923
2924
2925 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2926                         const u8 *src, const u8 *bssid,
2927                         enum p2p_send_action_result result)
2928 {
2929         enum p2p_pending_action_state state;
2930         int success;
2931
2932         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2933                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2934                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2935                 MAC2STR(bssid), result);
2936         success = result == P2P_SEND_ACTION_SUCCESS;
2937         state = p2p->pending_action_state;
2938         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2939         switch (state) {
2940         case P2P_NO_PENDING_ACTION:
2941                 if (p2p->after_scan_tx_in_progress) {
2942                         p2p->after_scan_tx_in_progress = 0;
2943                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2944                             p2p_run_after_scan(p2p))
2945                                 break;
2946                         if (p2p->state == P2P_SEARCH) {
2947                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2948                                 p2p_continue_find(p2p);
2949                         }
2950                 }
2951                 break;
2952         case P2P_PENDING_GO_NEG_REQUEST:
2953                 p2p_go_neg_req_cb(p2p, success);
2954                 break;
2955         case P2P_PENDING_GO_NEG_RESPONSE:
2956                 p2p_go_neg_resp_cb(p2p, success);
2957                 break;
2958         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2959                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2960                 break;
2961         case P2P_PENDING_GO_NEG_CONFIRM:
2962                 p2p_go_neg_conf_cb(p2p, result);
2963                 break;
2964         case P2P_PENDING_SD:
2965                 p2p_sd_cb(p2p, success);
2966                 break;
2967         case P2P_PENDING_PD:
2968                 p2p_prov_disc_cb(p2p, success);
2969                 break;
2970         case P2P_PENDING_INVITATION_REQUEST:
2971                 p2p_invitation_req_cb(p2p, success);
2972                 break;
2973         case P2P_PENDING_INVITATION_RESPONSE:
2974                 p2p_invitation_resp_cb(p2p, success);
2975                 break;
2976         case P2P_PENDING_DEV_DISC_REQUEST:
2977                 p2p_dev_disc_req_cb(p2p, success);
2978                 break;
2979         case P2P_PENDING_DEV_DISC_RESPONSE:
2980                 p2p_dev_disc_resp_cb(p2p, success);
2981                 break;
2982         case P2P_PENDING_GO_DISC_REQ:
2983                 p2p_go_disc_req_cb(p2p, success);
2984                 break;
2985         }
2986
2987         p2p->after_scan_tx_in_progress = 0;
2988 }
2989
2990
2991 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2992                    unsigned int duration)
2993 {
2994         if (freq == p2p->pending_client_disc_freq) {
2995                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
2996                 p2p->pending_client_disc_freq = 0;
2997                 return;
2998         }
2999
3000         if (freq != p2p->pending_listen_freq) {
3001                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3002                         freq, duration, p2p->pending_listen_freq);
3003                 return;
3004         }
3005
3006         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3007                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3008                 p2p->pending_listen_freq);
3009         p2p->in_listen = 1;
3010         p2p->drv_in_listen = freq;
3011         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3012                 /*
3013                  * Add 20 msec extra wait to avoid race condition with driver
3014                  * remain-on-channel end event, i.e., give driver more time to
3015                  * complete the operation before our timeout expires.
3016                  */
3017                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3018                                 p2p->pending_listen_usec + 20000);
3019         }
3020
3021         p2p->pending_listen_freq = 0;
3022 }
3023
3024
3025 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3026 {
3027         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3028         p2p->drv_in_listen = 0;
3029         if (p2p->in_listen)
3030                 return 0; /* Internal timeout will trigger the next step */
3031
3032         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3033                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3034                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3035                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3036                         return 0;
3037                 }
3038
3039                 p2p_set_state(p2p, P2P_CONNECT);
3040                 p2p_connect_send(p2p, p2p->go_neg_peer);
3041                 return 1;
3042         } else if (p2p->state == P2P_SEARCH) {
3043                 if (p2p->p2p_scan_running) {
3044                          /*
3045                           * Search is already in progress. This can happen if
3046                           * an Action frame RX is reported immediately after
3047                           * the end of a remain-on-channel operation and the
3048                           * response frame to that is sent using an offchannel
3049                           * operation while in p2p_find. Avoid an attempt to
3050                           * restart a scan here.
3051                           */
3052                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3053                         return 1;
3054                 }
3055                 if (p2p->pending_listen_freq) {
3056                         /*
3057                          * Better wait a bit if the driver is unable to start
3058                          * offchannel operation for some reason. p2p_search()
3059                          * will be started from internal timeout.
3060                          */
3061                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3062                         p2p_set_timeout(p2p, 0, 100000);
3063                         return 1;
3064                 }
3065                 if (p2p->search_delay) {
3066                         p2p_dbg(p2p, "Delay search operation by %u ms",
3067                                 p2p->search_delay);
3068                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3069                                         (p2p->search_delay % 1000) * 1000);
3070                         return 1;
3071                 }
3072                 p2p_search(p2p);
3073                 return 1;
3074         }
3075
3076         return 0;
3077 }
3078
3079
3080 static void p2p_timeout_connect(struct p2p_data *p2p)
3081 {
3082         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3083         if (p2p->go_neg_peer &&
3084             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3085                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3086                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3087                 return;
3088         }
3089         if (p2p->go_neg_peer &&
3090             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3091             p2p->go_neg_peer->connect_reqs < 120) {
3092                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3093                 p2p_connect_send(p2p, p2p->go_neg_peer);
3094                 return;
3095         }
3096
3097         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3098         p2p_listen_in_find(p2p, 0);
3099 }
3100
3101
3102 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3103 {
3104         if (p2p->go_neg_peer) {
3105                 if (p2p->drv_in_listen) {
3106                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3107                         return;
3108                 }
3109
3110                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3111                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3112                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3113                         return;
3114                 }
3115
3116                 p2p_set_state(p2p, P2P_CONNECT);
3117                 p2p_connect_send(p2p, p2p->go_neg_peer);
3118         } else
3119                 p2p_set_state(p2p, P2P_IDLE);
3120 }
3121
3122
3123 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3124 {
3125         /*
3126          * TODO: could remain constantly in Listen state for some time if there
3127          * are no other concurrent uses for the radio. For now, go to listen
3128          * state once per second to give other uses a chance to use the radio.
3129          */
3130         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3131         p2p_set_timeout(p2p, 0, 500000);
3132 }
3133
3134
3135 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3136 {
3137         struct p2p_device *dev = p2p->go_neg_peer;
3138
3139         if (dev == NULL) {
3140                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3141                 return;
3142         }
3143
3144         dev->wait_count++;
3145         if (dev->wait_count >= 120) {
3146                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3147                 p2p_go_neg_failed(p2p, dev, -1);
3148                 return;
3149         }
3150
3151         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3152         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3153         p2p_listen_in_find(p2p, 0);
3154 }
3155
3156
3157 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3158 {
3159         p2p_dbg(p2p, "Service Discovery Query timeout");
3160         if (p2p->sd_peer) {
3161                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3162                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3163                 p2p->sd_peer = NULL;
3164         }
3165         p2p_continue_find(p2p);
3166 }
3167
3168
3169 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3170 {
3171         p2p_dbg(p2p, "Provision Discovery Request timeout");
3172         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3173         p2p_continue_find(p2p);
3174 }
3175
3176
3177 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3178 {
3179         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3180
3181         /*
3182          * For user initiated PD requests that we have not gotten any responses
3183          * for while in IDLE state, we retry them a couple of times before
3184          * giving up.
3185          */
3186         if (!p2p->user_initiated_pd)
3187                 return;
3188
3189         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3190
3191         if (p2p->pd_retries) {
3192                 p2p->pd_retries--;
3193                 p2p_retry_pd(p2p);
3194         } else {
3195                 struct p2p_device *dev;
3196                 int for_join = 0;
3197
3198                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3199                         if (os_memcmp(p2p->pending_pd_devaddr,
3200                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3201                                 continue;
3202                         if (dev->req_config_methods &&
3203                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3204                                 for_join = 1;
3205                 }
3206
3207                 if (p2p->cfg->prov_disc_fail)
3208                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3209                                                  p2p->pending_pd_devaddr,
3210                                                  for_join ?
3211                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3212                                                  P2P_PROV_DISC_TIMEOUT);
3213                 p2p_reset_pending_pd(p2p);
3214         }
3215 }
3216
3217
3218 static void p2p_timeout_invite(struct p2p_data *p2p)
3219 {
3220         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3221         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3222         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3223                 /*
3224                  * Better remain on operating channel instead of listen channel
3225                  * when running a group.
3226                  */
3227                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3228                 p2p_set_timeout(p2p, 0, 100000);
3229                 return;
3230         }
3231         p2p_listen_in_find(p2p, 0);
3232 }
3233
3234
3235 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3236 {
3237         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3238                 p2p_set_state(p2p, P2P_INVITE);
3239                 p2p_invite_send(p2p, p2p->invite_peer,
3240                                 p2p->invite_go_dev_addr);
3241         } else {
3242                 if (p2p->invite_peer) {
3243                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3244                         if (p2p->cfg->invitation_result)
3245                                 p2p->cfg->invitation_result(
3246                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3247                                         p2p->invite_peer->info.p2p_device_addr);
3248                 }
3249                 p2p_set_state(p2p, P2P_IDLE);
3250         }
3251 }
3252
3253
3254 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3255 {
3256         struct p2p_data *p2p = eloop_ctx;
3257
3258         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3259
3260         p2p->in_listen = 0;
3261
3262         switch (p2p->state) {
3263         case P2P_IDLE:
3264                 /* Check if we timed out waiting for PD req */
3265                 if (p2p->pending_action_state == P2P_PENDING_PD)
3266                         p2p_timeout_prov_disc_req(p2p);
3267                 break;
3268         case P2P_SEARCH:
3269                 /* Check if we timed out waiting for PD req */
3270                 if (p2p->pending_action_state == P2P_PENDING_PD)
3271                         p2p_timeout_prov_disc_req(p2p);
3272                 if (p2p->search_delay && !p2p->in_search_delay) {
3273                         p2p_dbg(p2p, "Delay search operation by %u ms",
3274                                 p2p->search_delay);
3275                         p2p->in_search_delay = 1;
3276                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3277                                         (p2p->search_delay % 1000) * 1000);
3278                         break;
3279                 }
3280                 p2p->in_search_delay = 0;
3281                 p2p_search(p2p);
3282                 break;
3283         case P2P_CONNECT:
3284                 p2p_timeout_connect(p2p);
3285                 break;
3286         case P2P_CONNECT_LISTEN:
3287                 p2p_timeout_connect_listen(p2p);
3288                 break;
3289         case P2P_GO_NEG:
3290                 break;
3291         case P2P_LISTEN_ONLY:
3292                 /* Check if we timed out waiting for PD req */
3293                 if (p2p->pending_action_state == P2P_PENDING_PD)
3294                         p2p_timeout_prov_disc_req(p2p);
3295
3296                 if (p2p->ext_listen_only) {
3297                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3298                         p2p->ext_listen_only = 0;
3299                         p2p_set_state(p2p, P2P_IDLE);
3300                 }
3301                 break;
3302         case P2P_WAIT_PEER_CONNECT:
3303                 p2p_timeout_wait_peer_connect(p2p);
3304                 break;
3305         case P2P_WAIT_PEER_IDLE:
3306                 p2p_timeout_wait_peer_idle(p2p);
3307                 break;
3308         case P2P_SD_DURING_FIND:
3309                 p2p_timeout_sd_during_find(p2p);
3310                 break;
3311         case P2P_PROVISIONING:
3312                 break;
3313         case P2P_PD_DURING_FIND:
3314                 p2p_timeout_prov_disc_during_find(p2p);
3315                 break;
3316         case P2P_INVITE:
3317                 p2p_timeout_invite(p2p);
3318                 break;
3319         case P2P_INVITE_LISTEN:
3320                 p2p_timeout_invite_listen(p2p);
3321                 break;
3322         case P2P_SEARCH_WHEN_READY:
3323                 break;
3324         case P2P_CONTINUE_SEARCH_WHEN_READY:
3325                 break;
3326         }
3327 }
3328
3329
3330 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3331 {
3332         struct p2p_device *dev;
3333
3334         dev = p2p_get_device(p2p, peer_addr);
3335         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3336                 MACSTR, MAC2STR(peer_addr));
3337         if (dev == NULL) {
3338                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3339                 return -1;
3340         }
3341         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3342         dev->flags |= P2P_DEV_USER_REJECTED;
3343         return 0;
3344 }
3345
3346
3347 const char * p2p_wps_method_text(enum p2p_wps_method method)
3348 {
3349         switch (method) {
3350         case WPS_NOT_READY:
3351                 return "not-ready";
3352         case WPS_PIN_DISPLAY:
3353                 return "Display";
3354         case WPS_PIN_KEYPAD:
3355                 return "Keypad";
3356         case WPS_PBC:
3357                 return "PBC";
3358         }
3359
3360         return "??";
3361 }
3362
3363
3364 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3365 {
3366         switch (go_state) {
3367         case UNKNOWN_GO:
3368                 return "unknown";
3369         case LOCAL_GO:
3370                 return "local";
3371         case  REMOTE_GO:
3372                 return "remote";
3373         }
3374
3375         return "??";
3376 }
3377
3378
3379 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3380                                                const u8 *addr, int next)
3381 {
3382         struct p2p_device *dev;
3383
3384         if (addr)
3385                 dev = p2p_get_device(p2p, addr);
3386         else
3387                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3388
3389         if (dev && next) {
3390                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3391                 if (&dev->list == &p2p->devices)
3392                         dev = NULL;
3393         }
3394
3395         if (dev == NULL)
3396                 return NULL;
3397
3398         return &dev->info;
3399 }
3400
3401
3402 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3403                           char *buf, size_t buflen)
3404 {
3405         struct p2p_device *dev;
3406         int res;
3407         char *pos, *end;
3408         struct os_time now;
3409
3410         if (info == NULL)
3411                 return -1;
3412
3413         dev = (struct p2p_device *) (((u8 *) info) -
3414                                      offsetof(struct p2p_device, info));
3415
3416         pos = buf;
3417         end = buf + buflen;
3418
3419         os_get_time(&now);
3420         res = os_snprintf(pos, end - pos,
3421                           "age=%d\n"
3422                           "listen_freq=%d\n"
3423                           "wps_method=%s\n"
3424                           "interface_addr=" MACSTR "\n"
3425                           "member_in_go_dev=" MACSTR "\n"
3426                           "member_in_go_iface=" MACSTR "\n"
3427                           "go_neg_req_sent=%d\n"
3428                           "go_state=%s\n"
3429                           "dialog_token=%u\n"
3430                           "intended_addr=" MACSTR "\n"
3431                           "country=%c%c\n"
3432                           "oper_freq=%d\n"
3433                           "req_config_methods=0x%x\n"
3434                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3435                           "status=%d\n"
3436                           "wait_count=%u\n"
3437                           "invitation_reqs=%u\n",
3438                           (int) (now.sec - dev->last_seen.sec),
3439                           dev->listen_freq,
3440                           p2p_wps_method_text(dev->wps_method),
3441                           MAC2STR(dev->interface_addr),
3442                           MAC2STR(dev->member_in_go_dev),
3443                           MAC2STR(dev->member_in_go_iface),
3444                           dev->go_neg_req_sent,
3445                           p2p_go_state_text(dev->go_state),
3446                           dev->dialog_token,
3447                           MAC2STR(dev->intended_addr),
3448                           dev->country[0] ? dev->country[0] : '_',
3449                           dev->country[1] ? dev->country[1] : '_',
3450                           dev->oper_freq,
3451                           dev->req_config_methods,
3452                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3453                           "[PROBE_REQ_ONLY]" : "",
3454                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3455                           dev->flags & P2P_DEV_NOT_YET_READY ?
3456                           "[NOT_YET_READY]" : "",
3457                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3458                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3459                           "",
3460                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3461                           "[PD_PEER_DISPLAY]" : "",
3462                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3463                           "[PD_PEER_KEYPAD]" : "",
3464                           dev->flags & P2P_DEV_USER_REJECTED ?
3465                           "[USER_REJECTED]" : "",
3466                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3467                           "[PEER_WAITING_RESPONSE]" : "",
3468                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3469                           "[PREFER_PERSISTENT_GROUP]" : "",
3470                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3471                           "[WAIT_GO_NEG_RESPONSE]" : "",
3472                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3473                           "[WAIT_GO_NEG_CONFIRM]" : "",
3474                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3475                           "[GROUP_CLIENT_ONLY]" : "",
3476                           dev->flags & P2P_DEV_FORCE_FREQ ?
3477                           "[FORCE_FREQ]" : "",
3478                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3479                           "[PD_FOR_JOIN]" : "",
3480                           dev->status,
3481                           dev->wait_count,
3482                           dev->invitation_reqs);
3483         if (res < 0 || res >= end - pos)
3484                 return pos - buf;
3485         pos += res;
3486
3487         if (dev->ext_listen_period) {
3488                 res = os_snprintf(pos, end - pos,
3489                                   "ext_listen_period=%u\n"
3490                                   "ext_listen_interval=%u\n",
3491                                   dev->ext_listen_period,
3492                                   dev->ext_listen_interval);
3493                 if (res < 0 || res >= end - pos)
3494                         return pos - buf;
3495                 pos += res;
3496         }
3497
3498         if (dev->oper_ssid_len) {
3499                 res = os_snprintf(pos, end - pos,
3500                                   "oper_ssid=%s\n",
3501                                   wpa_ssid_txt(dev->oper_ssid,
3502                                                dev->oper_ssid_len));
3503                 if (res < 0 || res >= end - pos)
3504                         return pos - buf;
3505                 pos += res;
3506         }
3507
3508 #ifdef CONFIG_WIFI_DISPLAY
3509         if (dev->info.wfd_subelems) {
3510                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3511                 if (res < 0 || res >= end - pos)
3512                         return pos - buf;
3513                 pos += res;
3514
3515                 pos += wpa_snprintf_hex(pos, end - pos,
3516                                         wpabuf_head(dev->info.wfd_subelems),
3517                                         wpabuf_len(dev->info.wfd_subelems));
3518
3519                 res = os_snprintf(pos, end - pos, "\n");
3520                 if (res < 0 || res >= end - pos)
3521                         return pos - buf;
3522                 pos += res;
3523         }
3524 #endif /* CONFIG_WIFI_DISPLAY */
3525
3526         return pos - buf;
3527 }
3528
3529
3530 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3531 {
3532         return p2p_get_device(p2p, addr) != NULL;
3533 }
3534
3535
3536 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3537 {
3538         if (enabled) {
3539                 p2p_dbg(p2p, "Client discoverability enabled");
3540                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3541         } else {
3542                 p2p_dbg(p2p, "Client discoverability disabled");
3543                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3544         }
3545 }
3546
3547
3548 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3549                                               u32 duration2, u32 interval2)
3550 {
3551         struct wpabuf *req;
3552         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3553         u8 *len;
3554
3555         req = wpabuf_alloc(100);
3556         if (req == NULL)
3557                 return NULL;
3558
3559         if (duration1 || interval1) {
3560                 os_memset(&desc1, 0, sizeof(desc1));
3561                 desc1.count_type = 1;
3562                 desc1.duration = duration1;
3563                 desc1.interval = interval1;
3564                 ptr1 = &desc1;
3565
3566                 if (duration2 || interval2) {
3567                         os_memset(&desc2, 0, sizeof(desc2));
3568                         desc2.count_type = 2;
3569                         desc2.duration = duration2;
3570                         desc2.interval = interval2;
3571                         ptr2 = &desc2;
3572                 }
3573         }
3574
3575         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3576         len = p2p_buf_add_ie_hdr(req);
3577         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3578         p2p_buf_update_ie_hdr(req, len);
3579
3580         return req;
3581 }
3582
3583
3584 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3585                      const u8 *own_interface_addr, unsigned int freq,
3586                      u32 duration1, u32 interval1, u32 duration2,
3587                      u32 interval2)
3588 {
3589         struct wpabuf *req;
3590
3591         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3592                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3593                 "dur2=%u int2=%u",
3594                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3595                 freq, duration1, interval1, duration2, interval2);
3596
3597         req = p2p_build_presence_req(duration1, interval1, duration2,
3598                                      interval2);
3599         if (req == NULL)
3600                 return -1;
3601
3602         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3603         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3604                             go_interface_addr,
3605                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3606                 p2p_dbg(p2p, "Failed to send Action frame");
3607         }
3608         wpabuf_free(req);
3609
3610         return 0;
3611 }
3612
3613
3614 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3615                                                size_t noa_len, u8 dialog_token)
3616 {
3617         struct wpabuf *resp;
3618         u8 *len;
3619
3620         resp = wpabuf_alloc(100 + noa_len);
3621         if (resp == NULL)
3622                 return NULL;
3623
3624         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3625         len = p2p_buf_add_ie_hdr(resp);
3626         p2p_buf_add_status(resp, status);
3627         if (noa) {
3628                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3629                 wpabuf_put_le16(resp, noa_len);
3630                 wpabuf_put_data(resp, noa, noa_len);
3631         } else
3632                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3633         p2p_buf_update_ie_hdr(resp, len);
3634
3635         return resp;
3636 }
3637
3638
3639 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3640                                      const u8 *sa, const u8 *data, size_t len,
3641                                      int rx_freq)
3642 {
3643         struct p2p_message msg;
3644         u8 status;
3645         struct wpabuf *resp;
3646         size_t g;
3647         struct p2p_group *group = NULL;
3648         int parsed = 0;
3649         u8 noa[50];
3650         int noa_len;
3651
3652         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3653
3654         for (g = 0; g < p2p->num_groups; g++) {
3655                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3656                               ETH_ALEN) == 0) {
3657                         group = p2p->groups[g];
3658                         break;
3659                 }
3660         }
3661         if (group == NULL) {
3662                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3663                         MACSTR, MAC2STR(da));
3664                 return;
3665         }
3666
3667         if (p2p_parse(data, len, &msg) < 0) {
3668                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3669                 status = P2P_SC_FAIL_INVALID_PARAMS;
3670                 goto fail;
3671         }
3672         parsed = 1;
3673
3674         if (msg.noa == NULL) {
3675                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3676                 status = P2P_SC_FAIL_INVALID_PARAMS;
3677                 goto fail;
3678         }
3679
3680         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3681
3682 fail:
3683         if (p2p->cfg->get_noa)
3684                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3685                                             sizeof(noa));
3686         else
3687                 noa_len = -1;
3688         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3689                                        noa_len > 0 ? noa_len : 0,
3690                                        msg.dialog_token);
3691         if (parsed)
3692                 p2p_parse_free(&msg);
3693         if (resp == NULL)
3694                 return;
3695
3696         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3697         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3698                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3699                 p2p_dbg(p2p, "Failed to send Action frame");
3700         }
3701         wpabuf_free(resp);
3702 }
3703
3704
3705 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3706                                       const u8 *sa, const u8 *data, size_t len)
3707 {
3708         struct p2p_message msg;
3709
3710         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3711
3712         if (p2p_parse(data, len, &msg) < 0) {
3713                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3714                 return;
3715         }
3716
3717         if (msg.status == NULL || msg.noa == NULL) {
3718                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3719                 p2p_parse_free(&msg);
3720                 return;
3721         }
3722
3723         if (*msg.status) {
3724                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3725                         *msg.status);
3726                 p2p_parse_free(&msg);
3727                 return;
3728         }
3729
3730         p2p_dbg(p2p, "P2P Presence Request was accepted");
3731         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3732                     msg.noa, msg.noa_len);
3733         /* TODO: process NoA */
3734         p2p_parse_free(&msg);
3735 }
3736
3737
3738 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3739 {
3740         struct p2p_data *p2p = eloop_ctx;
3741
3742         if (p2p->ext_listen_interval) {
3743                 /* Schedule next extended listen timeout */
3744                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3745                                        p2p->ext_listen_interval_usec,
3746                                        p2p_ext_listen_timeout, p2p, NULL);
3747         }
3748
3749         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3750                 /*
3751                  * This should not really happen, but it looks like the Listen
3752                  * command may fail is something else (e.g., a scan) was
3753                  * running at an inconvenient time. As a workaround, allow new
3754                  * Extended Listen operation to be started.
3755                  */
3756                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3757                 p2p->ext_listen_only = 0;
3758                 p2p_set_state(p2p, P2P_IDLE);
3759         }
3760
3761         if (p2p->state != P2P_IDLE) {
3762                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3763                 return;
3764         }
3765
3766         p2p_dbg(p2p, "Extended Listen timeout");
3767         p2p->ext_listen_only = 1;
3768         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3769                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3770                 p2p->ext_listen_only = 0;
3771         }
3772 }
3773
3774
3775 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3776                    unsigned int interval)
3777 {
3778         if (period > 65535 || interval > 65535 || period > interval ||
3779             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3780                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3781                         period, interval);
3782                 return -1;
3783         }
3784
3785         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3786
3787         if (interval == 0) {
3788                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3789                 p2p->ext_listen_period = 0;
3790                 p2p->ext_listen_interval = 0;
3791                 return 0;
3792         }
3793
3794         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3795                 period, interval);
3796         p2p->ext_listen_period = period;
3797         p2p->ext_listen_interval = interval;
3798         p2p->ext_listen_interval_sec = interval / 1000;
3799         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3800
3801         eloop_register_timeout(p2p->ext_listen_interval_sec,
3802                                p2p->ext_listen_interval_usec,
3803                                p2p_ext_listen_timeout, p2p, NULL);
3804
3805         return 0;
3806 }
3807
3808
3809 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3810                       const u8 *ie, size_t ie_len)
3811 {
3812         struct p2p_message msg;
3813
3814         if (bssid == NULL || ie == NULL)
3815                 return;
3816
3817         os_memset(&msg, 0, sizeof(msg));
3818         if (p2p_parse_ies(ie, ie_len, &msg))
3819                 return;
3820         if (msg.minor_reason_code == NULL)
3821                 return;
3822
3823         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3824                 " reason_code=%u minor_reason_code=%u",
3825                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3826
3827         p2p_parse_free(&msg);
3828 }
3829
3830
3831 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3832                         const u8 *ie, size_t ie_len)
3833 {
3834         struct p2p_message msg;
3835
3836         if (bssid == NULL || ie == NULL)
3837                 return;
3838
3839         os_memset(&msg, 0, sizeof(msg));
3840         if (p2p_parse_ies(ie, ie_len, &msg))
3841                 return;
3842         if (msg.minor_reason_code == NULL)
3843                 return;
3844
3845         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3846                 " reason_code=%u minor_reason_code=%u",
3847                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3848
3849         p2p_parse_free(&msg);
3850 }
3851
3852
3853 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3854 {
3855         if (enabled) {
3856                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3857                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3858         } else {
3859                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3860                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3861         }
3862 }
3863
3864
3865 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3866 {
3867         if (p2p_channel_to_freq(reg_class, channel) < 0)
3868                 return -1;
3869
3870         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3871                 reg_class, channel);
3872         p2p->cfg->reg_class = reg_class;
3873         p2p->cfg->channel = channel;
3874
3875         return 0;
3876 }
3877
3878
3879 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3880 {
3881         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3882         if (postfix == NULL) {
3883                 p2p->cfg->ssid_postfix_len = 0;
3884                 return 0;
3885         }
3886         if (len > sizeof(p2p->cfg->ssid_postfix))
3887                 return -1;
3888         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3889         p2p->cfg->ssid_postfix_len = len;
3890         return 0;
3891 }
3892
3893
3894 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3895                          int cfg_op_channel)
3896 {
3897         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3898                 return -1;
3899
3900         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3901                 op_reg_class, op_channel);
3902         p2p->cfg->op_reg_class = op_reg_class;
3903         p2p->cfg->op_channel = op_channel;
3904         p2p->cfg->cfg_op_channel = cfg_op_channel;
3905         return 0;
3906 }
3907
3908
3909 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3910                       const struct p2p_channel *pref_chan)
3911 {
3912         struct p2p_channel *n;
3913
3914         if (pref_chan) {
3915                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3916                 if (n == NULL)
3917                         return -1;
3918                 os_memcpy(n, pref_chan,
3919                           num_pref_chan * sizeof(struct p2p_channel));
3920         } else
3921                 n = NULL;
3922
3923         os_free(p2p->cfg->pref_chan);
3924         p2p->cfg->pref_chan = n;
3925         p2p->cfg->num_pref_chan = num_pref_chan;
3926
3927         return 0;
3928 }
3929
3930
3931 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3932                            u8 *iface_addr)
3933 {
3934         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3935         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3936                 return -1;
3937         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3938         return 0;
3939 }
3940
3941
3942 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3943                            u8 *dev_addr)
3944 {
3945         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3946         if (dev == NULL)
3947                 return -1;
3948         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3949         return 0;
3950 }
3951
3952
3953 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3954 {
3955         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3956         if (is_zero_ether_addr(p2p->peer_filter))
3957                 p2p_dbg(p2p, "Disable peer filter");
3958         else
3959                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
3960                         MAC2STR(p2p->peer_filter));
3961 }
3962
3963
3964 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3965 {
3966         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
3967         if (p2p->cross_connect == enabled)
3968                 return;
3969         p2p->cross_connect = enabled;
3970         /* TODO: may need to tear down any action group where we are GO(?) */
3971 }
3972
3973
3974 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3975 {
3976         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3977         if (dev == NULL)
3978                 return -1;
3979         if (dev->oper_freq <= 0)
3980                 return -1;
3981         return dev->oper_freq;
3982 }
3983
3984
3985 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3986 {
3987         p2p_dbg(p2p, "Intra BSS distribution %s",
3988                 enabled ? "enabled" : "disabled");
3989         p2p->cfg->p2p_intra_bss = enabled;
3990 }
3991
3992
3993 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3994 {
3995         p2p_dbg(p2p, "Update channel list");
3996         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3997 }
3998
3999
4000 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4001                     const u8 *src, const u8 *bssid, const u8 *buf,
4002                     size_t len, unsigned int wait_time)
4003 {
4004         if (p2p->p2p_scan_running) {
4005                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4006                 if (p2p->after_scan_tx) {
4007                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4008                         os_free(p2p->after_scan_tx);
4009                 }
4010                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4011                                                len);
4012                 if (p2p->after_scan_tx == NULL)
4013                         return -1;
4014                 p2p->after_scan_tx->freq = freq;
4015                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4016                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4017                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4018                 p2p->after_scan_tx->len = len;
4019                 p2p->after_scan_tx->wait_time = wait_time;
4020                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4021                 return 0;
4022         }
4023
4024         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4025                                      buf, len, wait_time);
4026 }
4027
4028
4029 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4030                            int freq_overall)
4031 {
4032         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4033                 freq_24, freq_5, freq_overall);
4034         p2p->best_freq_24 = freq_24;
4035         p2p->best_freq_5 = freq_5;
4036         p2p->best_freq_overall = freq_overall;
4037 }
4038
4039
4040 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4041 {
4042         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4043         p2p->own_freq_preference = freq;
4044 }
4045
4046
4047 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4048 {
4049         if (p2p == NULL || p2p->go_neg_peer == NULL)
4050                 return NULL;
4051         return p2p->go_neg_peer->info.p2p_device_addr;
4052 }
4053
4054
4055 const struct p2p_peer_info *
4056 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4057 {
4058         struct p2p_device *dev;
4059
4060         if (addr) {
4061                 dev = p2p_get_device(p2p, addr);
4062                 if (!dev)
4063                         return NULL;
4064
4065                 if (!next) {
4066                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4067                                 return NULL;
4068
4069                         return &dev->info;
4070                 } else {
4071                         do {
4072                                 dev = dl_list_first(&dev->list,
4073                                                     struct p2p_device,
4074                                                     list);
4075                                 if (&dev->list == &p2p->devices)
4076                                         return NULL;
4077                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4078                 }
4079         } else {
4080                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4081                 if (!dev)
4082                         return NULL;
4083                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4084                         dev = dl_list_first(&dev->list,
4085                                             struct p2p_device,
4086                                             list);
4087                         if (&dev->list == &p2p->devices)
4088                                 return NULL;
4089                 }
4090         }
4091
4092         return &dev->info;
4093 }
4094
4095
4096 int p2p_in_progress(struct p2p_data *p2p)
4097 {
4098         if (p2p == NULL)
4099                 return 0;
4100         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4101             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4102                 return 2;
4103         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4104 }
4105
4106
4107 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4108                             u8 client_timeout)
4109 {
4110         if (p2p) {
4111                 p2p->go_timeout = go_timeout;
4112                 p2p->client_timeout = client_timeout;
4113         }
4114 }
4115
4116
4117 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4118 {
4119         if (p2p && p2p->search_delay < delay)
4120                 p2p->search_delay = delay;
4121 }
4122
4123
4124 #ifdef CONFIG_WIFI_DISPLAY
4125
4126 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4127 {
4128         size_t g;
4129         struct p2p_group *group;
4130
4131         for (g = 0; g < p2p->num_groups; g++) {
4132                 group = p2p->groups[g];
4133                 p2p_group_update_ies(group);
4134         }
4135 }
4136
4137
4138 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4139 {
4140         wpabuf_free(p2p->wfd_ie_beacon);
4141         p2p->wfd_ie_beacon = ie;
4142         p2p_update_wfd_ie_groups(p2p);
4143         return 0;
4144 }
4145
4146
4147 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4148 {
4149         wpabuf_free(p2p->wfd_ie_probe_req);
4150         p2p->wfd_ie_probe_req = ie;
4151         return 0;
4152 }
4153
4154
4155 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4156 {
4157         wpabuf_free(p2p->wfd_ie_probe_resp);
4158         p2p->wfd_ie_probe_resp = ie;
4159         p2p_update_wfd_ie_groups(p2p);
4160         return 0;
4161 }
4162
4163
4164 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4165 {
4166         wpabuf_free(p2p->wfd_ie_assoc_req);
4167         p2p->wfd_ie_assoc_req = ie;
4168         return 0;
4169 }
4170
4171
4172 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4173 {
4174         wpabuf_free(p2p->wfd_ie_invitation);
4175         p2p->wfd_ie_invitation = ie;
4176         return 0;
4177 }
4178
4179
4180 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4181 {
4182         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4183         p2p->wfd_ie_prov_disc_req = ie;
4184         return 0;
4185 }
4186
4187
4188 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4189 {
4190         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4191         p2p->wfd_ie_prov_disc_resp = ie;
4192         return 0;
4193 }
4194
4195
4196 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4197 {
4198         wpabuf_free(p2p->wfd_ie_go_neg);
4199         p2p->wfd_ie_go_neg = ie;
4200         return 0;
4201 }
4202
4203
4204 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4205 {
4206         wpabuf_free(p2p->wfd_dev_info);
4207         if (elem) {
4208                 p2p->wfd_dev_info = wpabuf_dup(elem);
4209                 if (p2p->wfd_dev_info == NULL)
4210                         return -1;
4211         } else
4212                 p2p->wfd_dev_info = NULL;
4213
4214         return 0;
4215 }
4216
4217
4218 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4219 {
4220         wpabuf_free(p2p->wfd_assoc_bssid);
4221         if (elem) {
4222                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4223                 if (p2p->wfd_assoc_bssid == NULL)
4224                         return -1;
4225         } else
4226                 p2p->wfd_assoc_bssid = NULL;
4227
4228         return 0;
4229 }
4230
4231
4232 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4233                                   const struct wpabuf *elem)
4234 {
4235         wpabuf_free(p2p->wfd_coupled_sink_info);
4236         if (elem) {
4237                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4238                 if (p2p->wfd_coupled_sink_info == NULL)
4239                         return -1;
4240         } else
4241                 p2p->wfd_coupled_sink_info = NULL;
4242
4243         return 0;
4244 }
4245
4246 #endif /* CONFIG_WIFI_DISPLAY */
4247
4248
4249 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4250                      int max_disc_tu)
4251 {
4252         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4253                 return -1;
4254
4255         p2p->min_disc_int = min_disc_int;
4256         p2p->max_disc_int = max_disc_int;
4257         p2p->max_disc_tu = max_disc_tu;
4258         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4259                 min_disc_int, max_disc_int, max_disc_tu);
4260
4261         return 0;
4262 }
4263
4264
4265 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4266 {
4267         va_list ap;
4268         char buf[500];
4269
4270         if (!p2p->cfg->debug_print)
4271                 return;
4272
4273         va_start(ap, fmt);
4274         vsnprintf(buf, sizeof(buf), fmt, ap);
4275         buf[sizeof(buf) - 1] = '\0';
4276         va_end(ap);
4277         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4278 }
4279
4280
4281 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4282 {
4283         va_list ap;
4284         char buf[500];
4285
4286         if (!p2p->cfg->debug_print)
4287                 return;
4288
4289         va_start(ap, fmt);
4290         vsnprintf(buf, sizeof(buf), fmt, ap);
4291         buf[sizeof(buf) - 1] = '\0';
4292         va_end(ap);
4293         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4294 }
4295
4296
4297 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4298 {
4299         va_list ap;
4300         char buf[500];
4301
4302         if (!p2p->cfg->debug_print)
4303                 return;
4304
4305         va_start(ap, fmt);
4306         vsnprintf(buf, sizeof(buf), fmt, ap);
4307         buf[sizeof(buf) - 1] = '\0';
4308         va_end(ap);
4309         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4310 }