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 "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p_i.h"
  18 #include "p2p.h"
  19
  20
  21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  24                                      const u8 *sa, const u8 *data, size_t len,
  25                                      int rx_freq);
  26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  27                                       const u8 *sa, const u8 *data,
  28                                       size_t len);
  29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  31
  32
  33 /*
  34  * p2p_scan recovery timeout
  35  *
  36  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  37  * timeout for this to avoid hitting P2P timeout unnecessarily.
  38  */
  39 #define P2P_SCAN_TIMEOUT 35
  40
  41 /**
  42  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  43  * entries will be removed
  44  */
  45 #ifndef P2P_PEER_EXPIRATION_AGE
  46 #define P2P_PEER_EXPIRATION_AGE 60
  47 #endif /* P2P_PEER_EXPIRATION_AGE */
  48
  49 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  50
  51 static void p2p_expire_peers(struct p2p_data *p2p)
  52 {
  53         struct p2p_device *dev, *n;
  54         struct os_reltime now;
  55         size_t i;
  56
  57         os_get_reltime(&now);
  58         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  59                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  60                         continue;
  61
  62                 if (dev == p2p->go_neg_peer) {
  63                         /*
  64                          * GO Negotiation is in progress with the peer, so
  65                          * don't expire the peer entry until GO Negotiation
  66                          * fails or times out.
  67                          */
  68                         continue;
  69                 }
  70
  71                 if (p2p->cfg->go_connected &&
  72                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  73                                            dev->info.p2p_device_addr)) {
  74                         /*
  75                          * We are connected as a client to a group in which the
  76                          * peer is the GO, so do not expire the peer entry.
  77                          */
  78                         os_get_reltime(&dev->last_seen);
  79                         continue;
  80                 }
  81
  82                 for (i = 0; i < p2p->num_groups; i++) {
  83                         if (p2p_group_is_client_connected(
  84                                     p2p->groups[i], dev->info.p2p_device_addr))
  85                                 break;
  86                 }
  87                 if (i < p2p->num_groups) {
  88                         /*
  89                          * The peer is connected as a client in a group where
  90                          * we are the GO, so do not expire the peer entry.
  91                          */
  92                         os_get_reltime(&dev->last_seen);
  93                         continue;
  94                 }
  95
  96                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  97                         MAC2STR(dev->info.p2p_device_addr));
  98                 dl_list_del(&dev->list);
  99                 p2p_device_free(p2p, dev);
 100         }
 101 }
 102
 103
 104 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 105 {
 106         struct p2p_data *p2p = eloop_ctx;
 107         p2p_expire_peers(p2p);
 108         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 109                                p2p_expiration_timeout, p2p, NULL);
 110 }
 111
 112
 113 static const char * p2p_state_txt(int state)
 114 {
 115         switch (state) {
 116         case P2P_IDLE:
 117                 return "IDLE";
 118         case P2P_SEARCH:
 119                 return "SEARCH";
 120         case P2P_CONNECT:
 121                 return "CONNECT";
 122         case P2P_CONNECT_LISTEN:
 123                 return "CONNECT_LISTEN";
 124         case P2P_GO_NEG:
 125                 return "GO_NEG";
 126         case P2P_LISTEN_ONLY:
 127                 return "LISTEN_ONLY";
 128         case P2P_WAIT_PEER_CONNECT:
 129                 return "WAIT_PEER_CONNECT";
 130         case P2P_WAIT_PEER_IDLE:
 131                 return "WAIT_PEER_IDLE";
 132         case P2P_SD_DURING_FIND:
 133                 return "SD_DURING_FIND";
 134         case P2P_PROVISIONING:
 135                 return "PROVISIONING";
 136         case P2P_PD_DURING_FIND:
 137                 return "PD_DURING_FIND";
 138         case P2P_INVITE:
 139                 return "INVITE";
 140         case P2P_INVITE_LISTEN:
 141                 return "INVITE_LISTEN";
 142         default:
 143                 return "?";
 144         }
 145 }
 146
 147
 148 const char * p2p_get_state_txt(struct p2p_data *p2p)
 149 {
 150         return p2p_state_txt(p2p->state);
 151 }
 152
 153
 154 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 155 {
 156         struct p2p_device *dev = NULL;
 157
 158         if (!addr || !p2p)
 159                 return 0;
 160
 161         dev = p2p_get_device(p2p, addr);
 162         if (dev)
 163                 return dev->wps_prov_info;
 164         else
 165                 return 0;
 166 }
 167
 168
 169 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 170 {
 171         struct p2p_device *dev = NULL;
 172
 173         if (!addr || !p2p)
 174                 return;
 175
 176         dev = p2p_get_device(p2p, addr);
 177         if (dev)
 178                 dev->wps_prov_info = 0;
 179 }
 180
 181
 182 void p2p_set_state(struct p2p_data *p2p, int new_state)
 183 {
 184         p2p_dbg(p2p, "State %s -> %s",
 185                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 186         p2p->state = new_state;
 187
 188         if (new_state == P2P_IDLE && p2p->pending_channel) {
 189                 p2p_dbg(p2p, "Apply change in listen channel");
 190                 p2p->cfg->reg_class = p2p->pending_reg_class;
 191                 p2p->cfg->channel = p2p->pending_channel;
 192                 p2p->pending_reg_class = 0;
 193                 p2p->pending_channel = 0;
 194         }
 195 }
 196
 197
 198 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 199 {
 200         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 201                 p2p_state_txt(p2p->state), sec, usec);
 202         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 203         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 204 }
 205
 206
 207 void p2p_clear_timeout(struct p2p_data *p2p)
 208 {
 209         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 210         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 211 }
 212
 213
 214 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 215                        int status)
 216 {
 217         struct p2p_go_neg_results res;
 218         p2p_clear_timeout(p2p);
 219         p2p_set_state(p2p, P2P_IDLE);
 220         if (p2p->go_neg_peer) {
 221                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 222                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 223                 p2p->go_neg_peer->oob_pw_id = 0;
 224         }
 225         p2p->go_neg_peer = NULL;
 226
 227         os_memset(&res, 0, sizeof(res));
 228         res.status = status;
 229         if (peer) {
 230                 wpabuf_free(peer->go_neg_conf);
 231                 peer->go_neg_conf = NULL;
 232                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 233                           ETH_ALEN);
 234                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 235                           ETH_ALEN);
 236         }
 237         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 238 }
 239
 240
 241 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 242 {
 243         unsigned int r, tu;
 244         int freq;
 245         struct wpabuf *ies;
 246
 247         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 248                 p2p_state_txt(p2p->state));
 249
 250         if (p2p->pending_listen_freq) {
 251                 /* We have a pending p2p_listen request */
 252                 p2p_dbg(p2p, "p2p_listen command pending already");
 253                 return;
 254         }
 255
 256         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 257         if (freq < 0) {
 258                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 259                 return;
 260         }
 261
 262         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 263                 r = 0;
 264         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 265               p2p->min_disc_int) * 100;
 266         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 267                 tu = p2p->max_disc_tu;
 268         if (!dev_disc && tu < 100)
 269                 tu = 100; /* Need to wait in non-device discovery use cases */
 270         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 271                 tu = p2p->cfg->max_listen * 1000 / 1024;
 272
 273         if (tu == 0) {
 274                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 275                 p2p_set_timeout(p2p, 0, 0);
 276                 return;
 277         }
 278
 279         ies = p2p_build_probe_resp_ies(p2p);
 280         if (ies == NULL)
 281                 return;
 282
 283         p2p->pending_listen_freq = freq;
 284         p2p->pending_listen_sec = 0;
 285         p2p->pending_listen_usec = 1024 * tu;
 286
 287         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 288                     ies) < 0) {
 289                 p2p_dbg(p2p, "Failed to start listen mode");
 290                 p2p->pending_listen_freq = 0;
 291         }
 292         wpabuf_free(ies);
 293 }
 294
 295
 296 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 297 {
 298         int freq;
 299         struct wpabuf *ies;
 300
 301         p2p_dbg(p2p, "Going to listen(only) state");
 302
 303         if (p2p->pending_listen_freq) {
 304                 /* We have a pending p2p_listen request */
 305                 p2p_dbg(p2p, "p2p_listen command pending already");
 306                 return -1;
 307         }
 308
 309         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 310         if (freq < 0) {
 311                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 312                 return -1;
 313         }
 314
 315         p2p->pending_listen_sec = timeout / 1000;
 316         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 317
 318         if (p2p->p2p_scan_running) {
 319                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 320                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 321                         return 0;
 322                 }
 323                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 324                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 325                 return 0;
 326         }
 327
 328         ies = p2p_build_probe_resp_ies(p2p);
 329         if (ies == NULL)
 330                 return -1;
 331
 332         p2p->pending_listen_freq = freq;
 333
 334         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 335                 p2p_dbg(p2p, "Failed to start listen mode");
 336                 p2p->pending_listen_freq = 0;
 337                 wpabuf_free(ies);
 338                 return -1;
 339         }
 340         wpabuf_free(ies);
 341
 342         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 343
 344         return 0;
 345 }
 346
 347
 348 static void p2p_device_clear_reported(struct p2p_data *p2p)
 349 {
 350         struct p2p_device *dev;
 351         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 352                 dev->flags &= ~P2P_DEV_REPORTED;
 353 }
 354
 355
 356 /**
 357  * p2p_get_device - Fetch a peer entry
 358  * @p2p: P2P module context from p2p_init()
 359  * @addr: P2P Device Address of the peer
 360  * Returns: Pointer to the device entry or %NULL if not found
 361  */
 362 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 363 {
 364         struct p2p_device *dev;
 365         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 366                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 367                         return dev;
 368         }
 369         return NULL;
 370 }
 371
 372
 373 /**
 374  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 375  * @p2p: P2P module context from p2p_init()
 376  * @addr: P2P Interface Address of the peer
 377  * Returns: Pointer to the device entry or %NULL if not found
 378  */
 379 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 380                                              const u8 *addr)
 381 {
 382         struct p2p_device *dev;
 383         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 384                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 385                         return dev;
 386         }
 387         return NULL;
 388 }
 389
 390
 391 /**
 392  * p2p_create_device - Create a peer entry
 393  * @p2p: P2P module context from p2p_init()
 394  * @addr: P2P Device Address of the peer
 395  * Returns: Pointer to the device entry or %NULL on failure
 396  *
 397  * If there is already an entry for the peer, it will be returned instead of
 398  * creating a new one.
 399  */
 400 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 401                                              const u8 *addr)
 402 {
 403         struct p2p_device *dev, *oldest = NULL;
 404         size_t count = 0;
 405
 406         dev = p2p_get_device(p2p, addr);
 407         if (dev)
 408                 return dev;
 409
 410         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 411                 count++;
 412                 if (oldest == NULL ||
 413                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 414                         oldest = dev;
 415         }
 416         if (count + 1 > p2p->cfg->max_peers && oldest) {
 417                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 418                 dl_list_del(&oldest->list);
 419                 p2p_device_free(p2p, oldest);
 420         }
 421
 422         dev = os_zalloc(sizeof(*dev));
 423         if (dev == NULL)
 424                 return NULL;
 425         dl_list_add(&p2p->devices, &dev->list);
 426         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 427
 428         return dev;
 429 }
 430
 431
 432 static void p2p_copy_client_info(struct p2p_device *dev,
 433                                  struct p2p_client_info *cli)
 434 {
 435         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 436         dev->info.device_name[cli->dev_name_len] = '\0';
 437         dev->info.dev_capab = cli->dev_capab;
 438         dev->info.config_methods = cli->config_methods;
 439         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 440         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 441         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 442                   dev->info.wps_sec_dev_type_list_len);
 443 }
 444
 445
 446 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 447                                  const u8 *go_interface_addr, int freq,
 448                                  const u8 *gi, size_t gi_len)
 449 {
 450         struct p2p_group_info info;
 451         size_t c;
 452         struct p2p_device *dev;
 453
 454         if (gi == NULL)
 455                 return 0;
 456
 457         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 458                 return -1;
 459
 460         /*
 461          * Clear old data for this group; if the devices are still in the
 462          * group, the information will be restored in the loop following this.
 463          */
 464         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 465                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 466                               ETH_ALEN) == 0) {
 467                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 468                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 469                 }
 470         }
 471
 472         for (c = 0; c < info.num_clients; c++) {
 473                 struct p2p_client_info *cli = &info.client[c];
 474                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 475                               ETH_ALEN) == 0)
 476                         continue; /* ignore our own entry */
 477                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 478                 if (dev) {
 479                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 480                                           P2P_DEV_PROBE_REQ_ONLY)) {
 481                                 /*
 482                                  * Update information since we have not
 483                                  * received this directly from the client.
 484                                  */
 485                                 p2p_copy_client_info(dev, cli);
 486                         } else {
 487                                 /*
 488                                  * Need to update P2P Client Discoverability
 489                                  * flag since it is valid only in P2P Group
 490                                  * Info attribute.
 491                                  */
 492                                 dev->info.dev_capab &=
 493                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 494                                 dev->info.dev_capab |=
 495                                         cli->dev_capab &
 496                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 497                         }
 498                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 499                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 500                         }
 501                 } else {
 502                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 503                         if (dev == NULL)
 504                                 continue;
 505                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 506                         p2p_copy_client_info(dev, cli);
 507                         dev->oper_freq = freq;
 508                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 509                                             dev->info.p2p_device_addr,
 510                                             &dev->info, 1);
 511                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 512                 }
 513
 514                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 515                           ETH_ALEN);
 516                 os_get_reltime(&dev->last_seen);
 517                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 518                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 519                           ETH_ALEN);
 520         }
 521
 522         return 0;
 523 }
 524
 525
 526 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 527                               int probe_req, const struct p2p_message *msg)
 528 {
 529         os_memcpy(dev->info.device_name, msg->device_name,
 530                   sizeof(dev->info.device_name));
 531
 532         if (msg->manufacturer &&
 533             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 534                 os_memset(dev->info.manufacturer, 0,
 535                           sizeof(dev->info.manufacturer));
 536                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 537                           msg->manufacturer_len);
 538         }
 539
 540         if (msg->model_name &&
 541             msg->model_name_len < sizeof(dev->info.model_name)) {
 542                 os_memset(dev->info.model_name, 0,
 543                           sizeof(dev->info.model_name));
 544                 os_memcpy(dev->info.model_name, msg->model_name,
 545                           msg->model_name_len);
 546         }
 547
 548         if (msg->model_number &&
 549             msg->model_number_len < sizeof(dev->info.model_number)) {
 550                 os_memset(dev->info.model_number, 0,
 551                           sizeof(dev->info.model_number));
 552                 os_memcpy(dev->info.model_number, msg->model_number,
 553                           msg->model_number_len);
 554         }
 555
 556         if (msg->serial_number &&
 557             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 558                 os_memset(dev->info.serial_number, 0,
 559                           sizeof(dev->info.serial_number));
 560                 os_memcpy(dev->info.serial_number, msg->serial_number,
 561                           msg->serial_number_len);
 562         }
 563
 564         if (msg->pri_dev_type)
 565                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 566                           sizeof(dev->info.pri_dev_type));
 567         else if (msg->wps_pri_dev_type)
 568                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 569                           sizeof(dev->info.pri_dev_type));
 570
 571         if (msg->wps_sec_dev_type_list) {
 572                 os_memcpy(dev->info.wps_sec_dev_type_list,
 573                           msg->wps_sec_dev_type_list,
 574                           msg->wps_sec_dev_type_list_len);
 575                 dev->info.wps_sec_dev_type_list_len =
 576                         msg->wps_sec_dev_type_list_len;
 577         }
 578
 579         if (msg->capability) {
 580                 /*
 581                  * P2P Client Discoverability bit is reserved in all frames
 582                  * that use this function, so do not change its value here.
 583                  */
 584                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 585                 dev->info.dev_capab |= msg->capability[0] &
 586                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 587                 dev->info.group_capab = msg->capability[1];
 588         }
 589
 590         if (msg->ext_listen_timing) {
 591                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 592                 dev->ext_listen_interval =
 593                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 594         }
 595
 596         if (!probe_req) {
 597                 u16 new_config_methods;
 598                 new_config_methods = msg->config_methods ?
 599                         msg->config_methods : msg->wps_config_methods;
 600                 if (new_config_methods &&
 601                     dev->info.config_methods != new_config_methods) {
 602                         p2p_dbg(p2p, "Update peer " MACSTR
 603                                 " config_methods 0x%x -> 0x%x",
 604                                 MAC2STR(dev->info.p2p_device_addr),
 605                                 dev->info.config_methods,
 606                                 new_config_methods);
 607                         dev->info.config_methods = new_config_methods;
 608                 }
 609         }
 610 }
 611
 612
 613 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 614                                          size_t ies_len)
 615 {
 616         const u8 *pos, *end;
 617         u8 id, len;
 618
 619         wpabuf_free(dev->info.vendor_elems);
 620         dev->info.vendor_elems = NULL;
 621
 622         end = ies + ies_len;
 623
 624         for (pos = ies; pos + 1 < end; pos += len) {
 625                 id = *pos++;
 626                 len = *pos++;
 627
 628                 if (pos + len > end)
 629                         break;
 630
 631                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 632                         continue;
 633
 634                 if (len >= 4) {
 635                         u32 type = WPA_GET_BE32(pos);
 636
 637                         if (type == WPA_IE_VENDOR_TYPE ||
 638                             type == WMM_IE_VENDOR_TYPE ||
 639                             type == WPS_IE_VENDOR_TYPE ||
 640                             type == P2P_IE_VENDOR_TYPE ||
 641                             type == WFD_IE_VENDOR_TYPE)
 642                                 continue;
 643                 }
 644
 645                 /* Unknown vendor element - make raw IE data available */
 646                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 647                         break;
 648                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 649         }
 650 }
 651
 652
 653 /**
 654  * p2p_add_device - Add peer entries based on scan results or P2P frames
 655  * @p2p: P2P module context from p2p_init()
 656  * @addr: Source address of Beacon or Probe Response frame (may be either
 657  *      P2P Device Address or P2P Interface Address)
 658  * @level: Signal level (signal strength of the received frame from the peer)
 659  * @freq: Frequency on which the Beacon or Probe Response frame was received
 660  * @rx_time: Time when the result was received
 661  * @ies: IEs from the Beacon or Probe Response frame
 662  * @ies_len: Length of ies buffer in octets
 663  * @scan_res: Whether this was based on scan results
 664  * Returns: 0 on success, -1 on failure
 665  *
 666  * If the scan result is for a GO, the clients in the group will also be added
 667  * to the peer table. This function can also be used with some other frames
 668  * like Provision Discovery Request that contains P2P Capability and P2P Device
 669  * Info attributes.
 670  */
 671 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 672                    struct os_reltime *rx_time, int level, const u8 *ies,
 673                    size_t ies_len, int scan_res)
 674 {
 675         struct p2p_device *dev;
 676         struct p2p_message msg;
 677         const u8 *p2p_dev_addr;
 678         int i;
 679         struct os_reltime time_now;
 680
 681         os_memset(&msg, 0, sizeof(msg));
 682         if (p2p_parse_ies(ies, ies_len, &msg)) {
 683                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 684                 p2p_parse_free(&msg);
 685                 return -1;
 686         }
 687
 688         if (msg.p2p_device_addr)
 689                 p2p_dev_addr = msg.p2p_device_addr;
 690         else if (msg.device_id)
 691                 p2p_dev_addr = msg.device_id;
 692         else {
 693                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 694                 p2p_parse_free(&msg);
 695                 return -1;
 696         }
 697
 698         if (!is_zero_ether_addr(p2p->peer_filter) &&
 699             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 700                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 701                         " due to peer filter", MAC2STR(p2p_dev_addr));
 702                 p2p_parse_free(&msg);
 703                 return 0;
 704         }
 705
 706         dev = p2p_create_device(p2p, p2p_dev_addr);
 707         if (dev == NULL) {
 708                 p2p_parse_free(&msg);
 709                 return -1;
 710         }
 711
 712         if (rx_time == NULL) {
 713                 os_get_reltime(&time_now);
 714                 rx_time = &time_now;
 715         }
 716
 717         /*
 718          * Update the device entry only if the new peer
 719          * entry is newer than the one previously stored.
 720          */
 721         if (dev->last_seen.sec > 0 &&
 722             os_reltime_before(rx_time, &dev->last_seen)) {
 723                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 724                         (unsigned int) rx_time->sec,
 725                         (unsigned int) rx_time->usec,
 726                         (unsigned int) dev->last_seen.sec,
 727                         (unsigned int) dev->last_seen.usec);
 728                 p2p_parse_free(&msg);
 729                 return -1;
 730         }
 731
 732         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 733
 734         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 735
 736         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 737                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 738         if (msg.ssid &&
 739             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 740              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 741              != 0)) {
 742                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 743                 dev->oper_ssid_len = msg.ssid[1];
 744         }
 745
 746         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 747             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 748                 int ds_freq;
 749                 if (*msg.ds_params == 14)
 750                         ds_freq = 2484;
 751                 else
 752                         ds_freq = 2407 + *msg.ds_params * 5;
 753                 if (freq != ds_freq) {
 754                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 755                                 freq, ds_freq);
 756                         freq = ds_freq;
 757                 }
 758         }
 759
 760         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 761                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 762                         MACSTR " %d -> %d MHz (DS param %d)",
 763                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 764                         freq, msg.ds_params ? *msg.ds_params : -1);
 765         }
 766         if (scan_res) {
 767                 dev->listen_freq = freq;
 768                 if (msg.group_info)
 769                         dev->oper_freq = freq;
 770         }
 771         dev->info.level = level;
 772
 773         p2p_copy_wps_info(p2p, dev, 0, &msg);
 774
 775         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 776                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 777                 dev->info.wps_vendor_ext[i] = NULL;
 778         }
 779
 780         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 781                 if (msg.wps_vendor_ext[i] == NULL)
 782                         break;
 783                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 784                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 785                 if (dev->info.wps_vendor_ext[i] == NULL)
 786                         break;
 787         }
 788
 789         if (msg.wfd_subelems) {
 790                 wpabuf_free(dev->info.wfd_subelems);
 791                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 792         }
 793
 794         if (scan_res) {
 795                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 796                                       msg.group_info, msg.group_info_len);
 797         }
 798
 799         p2p_parse_free(&msg);
 800
 801         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 802
 803         if (dev->flags & P2P_DEV_REPORTED)
 804                 return 0;
 805
 806         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 807                 freq, (unsigned int) rx_time->sec,
 808                 (unsigned int) rx_time->usec);
 809         if (dev->flags & P2P_DEV_USER_REJECTED) {
 810                 p2p_dbg(p2p, "Do not report rejected device");
 811                 return 0;
 812         }
 813
 814         if (dev->info.config_methods == 0 &&
 815             (freq == 2412 || freq == 2437 || freq == 2462)) {
 816                 /*
 817                  * If we have only seen a Beacon frame from a GO, we do not yet
 818                  * know what WPS config methods it supports. Since some
 819                  * applications use config_methods value from P2P-DEVICE-FOUND
 820                  * events, postpone reporting this peer until we've fully
 821                  * discovered its capabilities.
 822                  *
 823                  * At least for now, do this only if the peer was detected on
 824                  * one of the social channels since that peer can be easily be
 825                  * found again and there are no limitations of having to use
 826                  * passive scan on this channels, so this can be done through
 827                  * Probe Response frame that includes the config_methods
 828                  * information.
 829                  */
 830                 p2p_dbg(p2p, "Do not report peer " MACSTR
 831                         " with unknown config methods", MAC2STR(addr));
 832                 return 0;
 833         }
 834
 835         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 836                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 837         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 838
 839         return 0;
 840 }
 841
 842
 843 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 844 {
 845         int i;
 846
 847         if (p2p->go_neg_peer == dev) {
 848                 /*
 849                  * If GO Negotiation is in progress, report that it has failed.
 850                  */
 851                 p2p_go_neg_failed(p2p, dev, -1);
 852                 p2p->go_neg_peer = NULL;
 853         }
 854         if (p2p->invite_peer == dev)
 855                 p2p->invite_peer = NULL;
 856         if (p2p->sd_peer == dev)
 857                 p2p->sd_peer = NULL;
 858         if (p2p->pending_client_disc_go == dev)
 859                 p2p->pending_client_disc_go = NULL;
 860
 861         /* dev_lost() device, but only if it was previously dev_found() */
 862         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 863                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 864                                    dev->info.p2p_device_addr);
 865
 866         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 867                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 868                 dev->info.wps_vendor_ext[i] = NULL;
 869         }
 870
 871         wpabuf_free(dev->info.wfd_subelems);
 872         wpabuf_free(dev->info.vendor_elems);
 873         wpabuf_free(dev->go_neg_conf);
 874
 875         os_free(dev);
 876 }
 877
 878
 879 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 880 {
 881         struct p2p_channels *c;
 882         struct p2p_reg_class *cla;
 883         size_t cl, ch;
 884         int found = 0;
 885         u8 reg_class;
 886         u8 channel;
 887         int freq;
 888
 889         c = &p2p->cfg->channels;
 890         for (cl = 0; cl < c->reg_classes; cl++) {
 891                 cla = &c->reg_class[cl];
 892                 if (cla->reg_class != p2p->last_prog_scan_class)
 893                         continue;
 894                 for (ch = 0; ch < cla->channels; ch++) {
 895                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 896                                 found = 1;
 897                                 break;
 898                         }
 899                 }
 900                 if (found)
 901                         break;
 902         }
 903
 904         if (!found) {
 905                 /* Start from beginning */
 906                 reg_class = c->reg_class[0].reg_class;
 907                 channel = c->reg_class[0].channel[0];
 908         } else {
 909                 /* Pick the next channel */
 910                 ch++;
 911                 if (ch == cla->channels) {
 912                         cl++;
 913                         if (cl == c->reg_classes)
 914                                 cl = 0;
 915                         ch = 0;
 916                 }
 917                 reg_class = c->reg_class[cl].reg_class;
 918                 channel = c->reg_class[cl].channel[ch];
 919         }
 920
 921         freq = p2p_channel_to_freq(reg_class, channel);
 922         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 923                 reg_class, channel, freq);
 924         p2p->last_prog_scan_class = reg_class;
 925         p2p->last_prog_scan_chan = channel;
 926
 927         if (freq == 2412 || freq == 2437 || freq == 2462)
 928                 return 0; /* No need to add social channels */
 929         return freq;
 930 }
 931
 932
 933 static void p2p_search(struct p2p_data *p2p)
 934 {
 935         int freq = 0;
 936         enum p2p_scan_type type;
 937         u16 pw_id = DEV_PW_DEFAULT;
 938         int res;
 939
 940         if (p2p->drv_in_listen) {
 941                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 942                 return;
 943         }
 944         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 945
 946         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 947             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 948                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 949                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 950         } else {
 951                 type = P2P_SCAN_SOCIAL;
 952                 p2p_dbg(p2p, "Starting search");
 953         }
 954
 955         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 956                                  p2p->num_req_dev_types, p2p->req_dev_types,
 957                                  p2p->find_dev_id, pw_id);
 958         if (res < 0) {
 959                 p2p_dbg(p2p, "Scan request failed");
 960                 p2p_continue_find(p2p);
 961         } else {
 962                 p2p_dbg(p2p, "Running p2p_scan");
 963                 p2p->p2p_scan_running = 1;
 964                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 965                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 966                                        p2p, NULL);
 967         }
 968 }
 969
 970
 971 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 972 {
 973         struct p2p_data *p2p = eloop_ctx;
 974         p2p_dbg(p2p, "Find timeout -> stop");
 975         p2p_stop_find(p2p);
 976 }
 977
 978
 979 static int p2p_run_after_scan(struct p2p_data *p2p)
 980 {
 981         struct p2p_device *dev;
 982         enum p2p_after_scan op;
 983
 984         if (p2p->after_scan_tx) {
 985                 p2p->after_scan_tx_in_progress = 1;
 986                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
 987                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 988                                       p2p->after_scan_tx->freq,
 989                                       p2p->after_scan_tx->dst,
 990                                       p2p->after_scan_tx->src,
 991                                       p2p->after_scan_tx->bssid,
 992                                       (u8 *) (p2p->after_scan_tx + 1),
 993                                       p2p->after_scan_tx->len,
 994                                       p2p->after_scan_tx->wait_time);
 995                 os_free(p2p->after_scan_tx);
 996                 p2p->after_scan_tx = NULL;
 997                 return 1;
 998         }
 999
1000         op = p2p->start_after_scan;
1001         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1002         switch (op) {
1003         case P2P_AFTER_SCAN_NOTHING:
1004                 break;
1005         case P2P_AFTER_SCAN_LISTEN:
1006                 p2p_dbg(p2p, "Start previously requested Listen state");
1007                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1008                            p2p->pending_listen_usec / 1000);
1009                 return 1;
1010         case P2P_AFTER_SCAN_CONNECT:
1011                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1012                         MAC2STR(p2p->after_scan_peer));
1013                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1014                 if (dev == NULL) {
1015                         p2p_dbg(p2p, "Peer not known anymore");
1016                         break;
1017                 }
1018                 p2p_connect_send(p2p, dev);
1019                 return 1;
1020         }
1021
1022         return 0;
1023 }
1024
1025
1026 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1027 {
1028         struct p2p_data *p2p = eloop_ctx;
1029         int running;
1030         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1031         running = p2p->p2p_scan_running;
1032         /* Make sure we recover from missed scan results callback */
1033         p2p->p2p_scan_running = 0;
1034
1035         if (running)
1036                 p2p_run_after_scan(p2p);
1037 }
1038
1039
1040 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1041 {
1042         p2p->num_req_dev_types = 0;
1043         os_free(p2p->req_dev_types);
1044         p2p->req_dev_types = NULL;
1045 }
1046
1047
1048 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1049              enum p2p_discovery_type type,
1050              unsigned int num_req_dev_types, const u8 *req_dev_types,
1051              const u8 *dev_id, unsigned int search_delay)
1052 {
1053         int res;
1054
1055         p2p_dbg(p2p, "Starting find (type=%d)", type);
1056         os_get_reltime(&p2p->find_start);
1057         if (p2p->p2p_scan_running) {
1058                 p2p_dbg(p2p, "p2p_scan is already running");
1059         }
1060
1061         p2p_free_req_dev_types(p2p);
1062         if (req_dev_types && num_req_dev_types) {
1063                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1064                                                WPS_DEV_TYPE_LEN);
1065                 if (p2p->req_dev_types == NULL)
1066                         return -1;
1067                 os_memcpy(p2p->req_dev_types, req_dev_types,
1068                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1069                 p2p->num_req_dev_types = num_req_dev_types;
1070         }
1071
1072         if (dev_id) {
1073                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1074                 p2p->find_dev_id = p2p->find_dev_id_buf;
1075         } else
1076                 p2p->find_dev_id = NULL;
1077
1078         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1079         p2p_clear_timeout(p2p);
1080         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1081         p2p->find_type = type;
1082         p2p_device_clear_reported(p2p);
1083         p2p_set_state(p2p, P2P_SEARCH);
1084         p2p->search_delay = search_delay;
1085         p2p->in_search_delay = 0;
1086         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1087         p2p->last_p2p_find_timeout = timeout;
1088         if (timeout)
1089                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1090                                        p2p, NULL);
1091         switch (type) {
1092         case P2P_FIND_START_WITH_FULL:
1093         case P2P_FIND_PROGRESSIVE:
1094                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1095                                          p2p->num_req_dev_types,
1096                                          p2p->req_dev_types, dev_id,
1097                                          DEV_PW_DEFAULT);
1098                 break;
1099         case P2P_FIND_ONLY_SOCIAL:
1100                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1101                                          p2p->num_req_dev_types,
1102                                          p2p->req_dev_types, dev_id,
1103                                          DEV_PW_DEFAULT);
1104                 break;
1105         default:
1106                 return -1;
1107         }
1108
1109         if (res == 0) {
1110                 p2p_dbg(p2p, "Running p2p_scan");
1111                 p2p->p2p_scan_running = 1;
1112                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1113                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1114                                        p2p, NULL);
1115         } else if (p2p->p2p_scan_running) {
1116                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1117                 /* wait for the previous p2p_scan to complete */
1118                 res = 0; /* do not report failure */
1119         } else {
1120                 p2p_dbg(p2p, "Failed to start p2p_scan");
1121                 p2p_set_state(p2p, P2P_IDLE);
1122                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1123         }
1124
1125         return res;
1126 }
1127
1128
1129 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1130 {
1131         p2p_dbg(p2p, "Stopping find");
1132         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1133         p2p_clear_timeout(p2p);
1134         if (p2p->state == P2P_SEARCH)
1135                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1136         p2p_set_state(p2p, P2P_IDLE);
1137         p2p_free_req_dev_types(p2p);
1138         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1139         if (p2p->go_neg_peer)
1140                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1141         p2p->go_neg_peer = NULL;
1142         p2p->sd_peer = NULL;
1143         p2p->invite_peer = NULL;
1144         p2p_stop_listen_for_freq(p2p, freq);
1145 }
1146
1147
1148 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1149 {
1150         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1151                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1152                 return;
1153         }
1154         if (p2p->in_listen) {
1155                 p2p->in_listen = 0;
1156                 p2p_clear_timeout(p2p);
1157         }
1158         if (p2p->drv_in_listen) {
1159                 /*
1160                  * The driver may not deliver callback to p2p_listen_end()
1161                  * when the operation gets canceled, so clear the internal
1162                  * variable that is tracking driver state.
1163                  */
1164                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1165                 p2p->drv_in_listen = 0;
1166         }
1167         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1168 }
1169
1170
1171 void p2p_stop_listen(struct p2p_data *p2p)
1172 {
1173         if (p2p->state != P2P_LISTEN_ONLY) {
1174                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1175                 return;
1176         }
1177
1178         p2p_stop_listen_for_freq(p2p, 0);
1179         p2p_set_state(p2p, P2P_IDLE);
1180 }
1181
1182
1183 void p2p_stop_find(struct p2p_data *p2p)
1184 {
1185         p2p->pending_listen_freq = 0;
1186         p2p_stop_find_for_freq(p2p, 0);
1187 }
1188
1189
1190 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1191                                     unsigned int force_freq,
1192                                     unsigned int pref_freq, int go)
1193 {
1194         u8 op_class, op_channel;
1195         unsigned int freq = force_freq ? force_freq : pref_freq;
1196
1197         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1198                 force_freq, pref_freq, go);
1199         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1200                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1201                 return -1;
1202         }
1203
1204         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1205             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1206                                           op_channel))) {
1207                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1208                         freq, op_class, op_channel);
1209                 return -1;
1210         }
1211
1212         p2p->op_reg_class = op_class;
1213         p2p->op_channel = op_channel;
1214
1215         if (force_freq) {
1216                 p2p->channels.reg_classes = 1;
1217                 p2p->channels.reg_class[0].channels = 1;
1218                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1219                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1220         } else {
1221                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1222                           sizeof(struct p2p_channels));
1223         }
1224
1225         return 0;
1226 }
1227
1228
1229 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1230 {
1231         u8 op_class, op_channel;
1232         const int op_classes_5ghz[] = { 124, 115, 0 };
1233         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1234         const int op_classes_vht[] = { 128, 0 };
1235
1236         p2p_dbg(p2p, "Prepare channel best");
1237
1238         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1239             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1240             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1241             == 0) {
1242                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1243                 p2p->op_reg_class = op_class;
1244                 p2p->op_channel = op_channel;
1245         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1246                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1247                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1248                    == 0) {
1249                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1250                 p2p->op_reg_class = op_class;
1251                 p2p->op_channel = op_channel;
1252         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1253                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1254                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1255                                        &op_channel) == 0) {
1256                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1257                 p2p->op_reg_class = op_class;
1258                 p2p->op_channel = op_channel;
1259         } else if (p2p->cfg->num_pref_chan > 0 &&
1260                    p2p_channels_includes(&p2p->cfg->channels,
1261                                          p2p->cfg->pref_chan[0].op_class,
1262                                          p2p->cfg->pref_chan[0].chan)) {
1263                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1264                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1265                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1266         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1267                                       &p2p->op_reg_class, &p2p->op_channel) ==
1268                    0) {
1269                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1270                         p2p->op_reg_class, p2p->op_channel);
1271         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1272                                       &p2p->op_reg_class, &p2p->op_channel) ==
1273                    0) {
1274                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1275                         p2p->op_reg_class, p2p->op_channel);
1276         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1277                                       &p2p->op_reg_class, &p2p->op_channel) ==
1278                    0) {
1279                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1280                         p2p->op_reg_class, p2p->op_channel);
1281         } else if (p2p_channels_includes(&p2p->cfg->channels,
1282                                          p2p->cfg->op_reg_class,
1283                                          p2p->cfg->op_channel)) {
1284                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1285                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1286                 p2p->op_channel = p2p->cfg->op_channel;
1287         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1288                                              &p2p->op_reg_class,
1289                                              &p2p->op_channel) == 0) {
1290                 p2p_dbg(p2p, "Select random available social channel %d from 2.4 GHz band as operating channel preference",
1291                         p2p->op_channel);
1292         } else {
1293                 /* Select any random available channel from the first available
1294                  * operating class */
1295                 p2p_channel_select(&p2p->cfg->channels, NULL,
1296                                    &p2p->op_reg_class,
1297                                    &p2p->op_channel);
1298                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1299                         p2p->op_channel, p2p->op_reg_class);
1300         }
1301
1302         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1303                   sizeof(struct p2p_channels));
1304 }
1305
1306
1307 /**
1308  * p2p_prepare_channel - Select operating channel for GO Negotiation
1309  * @p2p: P2P module context from p2p_init()
1310  * @dev: Selected peer device
1311  * @force_freq: Forced frequency in MHz or 0 if not forced
1312  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1313  * @go: Whether the local end will be forced to be GO
1314  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1315  *
1316  * This function is used to do initial operating channel selection for GO
1317  * Negotiation prior to having received peer information. The selected channel
1318  * may be further optimized in p2p_reselect_channel() once the peer information
1319  * is available.
1320  */
1321 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1322                         unsigned int force_freq, unsigned int pref_freq, int go)
1323 {
1324         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1325                 force_freq, pref_freq, go);
1326         if (force_freq || pref_freq) {
1327                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1328                     0)
1329                         return -1;
1330         } else {
1331                 p2p_prepare_channel_best(p2p);
1332         }
1333         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1334         if (go)
1335                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1336         else if (!force_freq)
1337                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1338                                    &p2p->channels);
1339         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1340
1341         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1342                 p2p->op_reg_class, p2p->op_channel,
1343                 force_freq ? " (forced)" : "");
1344
1345         if (force_freq)
1346                 dev->flags |= P2P_DEV_FORCE_FREQ;
1347         else
1348                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1349
1350         return 0;
1351 }
1352
1353
1354 static void p2p_set_dev_persistent(struct p2p_device *dev,
1355                                    int persistent_group)
1356 {
1357         switch (persistent_group) {
1358         case 0:
1359                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1360                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1361                 break;
1362         case 1:
1363                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1364                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1365                 break;
1366         case 2:
1367                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1368                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1369                 break;
1370         }
1371 }
1372
1373
1374 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1375                 enum p2p_wps_method wps_method,
1376                 int go_intent, const u8 *own_interface_addr,
1377                 unsigned int force_freq, int persistent_group,
1378                 const u8 *force_ssid, size_t force_ssid_len,
1379                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1380 {
1381         struct p2p_device *dev;
1382
1383         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1384                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1385                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1386                 "oob_pw_id=%u",
1387                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1388                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1389
1390         dev = p2p_get_device(p2p, peer_addr);
1391         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1392                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1393                         MAC2STR(peer_addr));
1394                 return -1;
1395         }
1396
1397         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1398                                 go_intent == 15) < 0)
1399                 return -1;
1400
1401         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1402                 if (!(dev->info.dev_capab &
1403                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1404                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1405                                 " that is in a group and is not discoverable",
1406                                 MAC2STR(peer_addr));
1407                         return -1;
1408                 }
1409                 if (dev->oper_freq <= 0) {
1410                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1411                                 " with incomplete information",
1412                                 MAC2STR(peer_addr));
1413                         return -1;
1414                 }
1415
1416                 /*
1417                  * First, try to connect directly. If the peer does not
1418                  * acknowledge frames, assume it is sleeping and use device
1419                  * discoverability via the GO at that point.
1420                  */
1421         }
1422
1423         p2p->ssid_set = 0;
1424         if (force_ssid) {
1425                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1426                                   force_ssid, force_ssid_len);
1427                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1428                 p2p->ssid_len = force_ssid_len;
1429                 p2p->ssid_set = 1;
1430         }
1431
1432         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1433         dev->flags &= ~P2P_DEV_USER_REJECTED;
1434         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1435         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1436         if (pd_before_go_neg)
1437                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1438         else {
1439                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1440                 /*
1441                  * Assign dialog token and tie breaker here to use the same
1442                  * values in each retry within the same GO Negotiation exchange.
1443                  */
1444                 dev->dialog_token++;
1445                 if (dev->dialog_token == 0)
1446                         dev->dialog_token = 1;
1447                 dev->tie_breaker = p2p->next_tie_breaker;
1448                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1449         }
1450         dev->connect_reqs = 0;
1451         dev->go_neg_req_sent = 0;
1452         dev->go_state = UNKNOWN_GO;
1453         p2p_set_dev_persistent(dev, persistent_group);
1454         p2p->go_intent = go_intent;
1455         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1456
1457         if (p2p->state != P2P_IDLE)
1458                 p2p_stop_find(p2p);
1459
1460         if (p2p->after_scan_tx) {
1461                 /*
1462                  * We need to drop the pending frame to avoid issues with the
1463                  * new GO Negotiation, e.g., when the pending frame was from a
1464                  * previous attempt at starting a GO Negotiation.
1465                  */
1466                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1467                 os_free(p2p->after_scan_tx);
1468                 p2p->after_scan_tx = NULL;
1469         }
1470
1471         dev->wps_method = wps_method;
1472         dev->oob_pw_id = oob_pw_id;
1473         dev->status = P2P_SC_SUCCESS;
1474
1475         if (p2p->p2p_scan_running) {
1476                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1477                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1478                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1479                 return 0;
1480         }
1481         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1482
1483         return p2p_connect_send(p2p, dev);
1484 }
1485
1486
1487 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1488                   enum p2p_wps_method wps_method,
1489                   int go_intent, const u8 *own_interface_addr,
1490                   unsigned int force_freq, int persistent_group,
1491                   const u8 *force_ssid, size_t force_ssid_len,
1492                   unsigned int pref_freq, u16 oob_pw_id)
1493 {
1494         struct p2p_device *dev;
1495
1496         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1497                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1498                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1499                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1500                 wps_method, persistent_group, oob_pw_id);
1501
1502         dev = p2p_get_device(p2p, peer_addr);
1503         if (dev == NULL) {
1504                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1505                         MAC2STR(peer_addr));
1506                 return -1;
1507         }
1508
1509         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1510                                 15) < 0)
1511                 return -1;
1512
1513         p2p->ssid_set = 0;
1514         if (force_ssid) {
1515                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1516                                   force_ssid, force_ssid_len);
1517                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1518                 p2p->ssid_len = force_ssid_len;
1519                 p2p->ssid_set = 1;
1520         }
1521
1522         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1523         dev->flags &= ~P2P_DEV_USER_REJECTED;
1524         dev->go_neg_req_sent = 0;
1525         dev->go_state = UNKNOWN_GO;
1526         p2p_set_dev_persistent(dev, persistent_group);
1527         p2p->go_intent = go_intent;
1528         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1529
1530         dev->wps_method = wps_method;
1531         dev->oob_pw_id = oob_pw_id;
1532         dev->status = P2P_SC_SUCCESS;
1533
1534         return 0;
1535 }
1536
1537
1538 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1539                       struct p2p_device *dev, struct p2p_message *msg)
1540 {
1541         os_get_reltime(&dev->last_seen);
1542
1543         p2p_copy_wps_info(p2p, dev, 0, msg);
1544
1545         if (msg->listen_channel) {
1546                 int freq;
1547                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1548                                            msg->listen_channel[4]);
1549                 if (freq < 0) {
1550                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1551                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1552                                 msg->listen_channel[0],
1553                                 msg->listen_channel[1],
1554                                 msg->listen_channel[2],
1555                                 msg->listen_channel[3],
1556                                 msg->listen_channel[4]);
1557                 } else {
1558                         p2p_dbg(p2p, "Update peer " MACSTR
1559                                 " Listen channel: %u -> %u MHz",
1560                                 MAC2STR(dev->info.p2p_device_addr),
1561                                 dev->listen_freq, freq);
1562                         dev->listen_freq = freq;
1563                 }
1564         }
1565
1566         if (msg->wfd_subelems) {
1567                 wpabuf_free(dev->info.wfd_subelems);
1568                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1569         }
1570
1571         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1572                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1573                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1574         } else {
1575                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1576                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1577                         "listen_freq=%d",
1578                         MAC2STR(dev->info.p2p_device_addr),
1579                         dev->info.dev_capab, dev->info.group_capab,
1580                         dev->info.device_name, dev->listen_freq);
1581         }
1582
1583         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1584
1585         if (dev->flags & P2P_DEV_USER_REJECTED) {
1586                 p2p_dbg(p2p, "Do not report rejected device");
1587                 return;
1588         }
1589
1590         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1591                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1592         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1593 }
1594
1595
1596 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1597 {
1598         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1599         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1600         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1601                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1602         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1603 }
1604
1605
1606 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1607 {
1608         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1609         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1610         return 0;
1611 }
1612
1613
1614 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1615 {
1616         struct p2p_go_neg_results res;
1617         int go = peer->go_state == LOCAL_GO;
1618         struct p2p_channels intersection;
1619         int freqs;
1620         size_t i, j;
1621
1622         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1623                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1624
1625         os_memset(&res, 0, sizeof(res));
1626         res.role_go = go;
1627         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1628         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1629         res.wps_method = peer->wps_method;
1630         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1631                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1632                         res.persistent_group = 2;
1633                 else
1634                         res.persistent_group = 1;
1635         }
1636
1637         if (go) {
1638                 /* Setup AP mode for WPS provisioning */
1639                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1640                                                p2p->op_channel);
1641                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1642                 res.ssid_len = p2p->ssid_len;
1643                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1644         } else {
1645                 res.freq = peer->oper_freq;
1646                 if (p2p->ssid_len) {
1647                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1648                         res.ssid_len = p2p->ssid_len;
1649                 }
1650         }
1651
1652         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1653         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1654         p2p_channels_intersect(&p2p->channels, &peer->channels,
1655                                &intersection);
1656         if (go) {
1657                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1658                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1659                                   &intersection);
1660         }
1661         freqs = 0;
1662         for (i = 0; i < intersection.reg_classes; i++) {
1663                 struct p2p_reg_class *c = &intersection.reg_class[i];
1664                 if (freqs + 1 == P2P_MAX_CHANNELS)
1665                         break;
1666                 for (j = 0; j < c->channels; j++) {
1667                         int freq;
1668                         if (freqs + 1 == P2P_MAX_CHANNELS)
1669                                 break;
1670                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1671                         if (freq < 0)
1672                                 continue;
1673                         res.freq_list[freqs++] = freq;
1674                 }
1675         }
1676
1677         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1678
1679         p2p_clear_timeout(p2p);
1680         p2p->ssid_set = 0;
1681         peer->go_neg_req_sent = 0;
1682         peer->wps_method = WPS_NOT_READY;
1683         peer->oob_pw_id = 0;
1684         wpabuf_free(peer->go_neg_conf);
1685         peer->go_neg_conf = NULL;
1686
1687         p2p_set_state(p2p, P2P_PROVISIONING);
1688         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1689 }
1690
1691
1692 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1693                               const u8 *data, size_t len, int rx_freq)
1694 {
1695         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1696         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1697
1698         if (len < 1)
1699                 return;
1700
1701         switch (data[0]) {
1702         case P2P_GO_NEG_REQ:
1703                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1704                 break;
1705         case P2P_GO_NEG_RESP:
1706                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1707                 break;
1708         case P2P_GO_NEG_CONF:
1709                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1710                 break;
1711         case P2P_INVITATION_REQ:
1712                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1713                                            rx_freq);
1714                 break;
1715         case P2P_INVITATION_RESP:
1716                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1717                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1718                 break;
1719         case P2P_PROV_DISC_REQ:
1720                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1721                 break;
1722         case P2P_PROV_DISC_RESP:
1723                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1724                 break;
1725         case P2P_DEV_DISC_REQ:
1726                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1727                 break;
1728         case P2P_DEV_DISC_RESP:
1729                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1730                 break;
1731         default:
1732                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1733                         data[0]);
1734                 break;
1735         }
1736 }
1737
1738
1739 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1740                                  const u8 *sa, const u8 *bssid, const u8 *data,
1741                                  size_t len, int freq)
1742 {
1743         if (len < 1)
1744                 return;
1745
1746         switch (data[0]) {
1747         case WLAN_PA_VENDOR_SPECIFIC:
1748                 data++;
1749                 len--;
1750                 if (len < 4)
1751                         return;
1752                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1753                         return;
1754
1755                 data += 4;
1756                 len -= 4;
1757
1758                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1759                 break;
1760         case WLAN_PA_GAS_INITIAL_REQ:
1761                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1762                 break;
1763         case WLAN_PA_GAS_INITIAL_RESP:
1764                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1765                 break;
1766         case WLAN_PA_GAS_COMEBACK_REQ:
1767                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1768                 break;
1769         case WLAN_PA_GAS_COMEBACK_RESP:
1770                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1771                 break;
1772         }
1773 }
1774
1775
1776 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1777                    const u8 *bssid, u8 category,
1778                    const u8 *data, size_t len, int freq)
1779 {
1780         if (category == WLAN_ACTION_PUBLIC) {
1781                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1782                 return;
1783         }
1784
1785         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1786                 return;
1787
1788         if (len < 4)
1789                 return;
1790
1791         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1792                 return;
1793         data += 4;
1794         len -= 4;
1795
1796         /* P2P action frame */
1797         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1798         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1799
1800         if (len < 1)
1801                 return;
1802         switch (data[0]) {
1803         case P2P_NOA:
1804                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1805                 /* TODO */
1806                 break;
1807         case P2P_PRESENCE_REQ:
1808                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1809                 break;
1810         case P2P_PRESENCE_RESP:
1811                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1812                 break;
1813         case P2P_GO_DISC_REQ:
1814                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1815                 break;
1816         default:
1817                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1818                 break;
1819         }
1820 }
1821
1822
1823 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1824 {
1825         struct p2p_data *p2p = eloop_ctx;
1826         if (p2p->go_neg_peer == NULL)
1827                 return;
1828         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1829         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1830         p2p_connect_send(p2p, p2p->go_neg_peer);
1831 }
1832
1833
1834 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1835 {
1836         struct p2p_data *p2p = eloop_ctx;
1837         if (p2p->invite_peer == NULL)
1838                 return;
1839         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1840         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1841                         p2p->invite_dev_pw_id);
1842 }
1843
1844
1845 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1846                                        const u8 *ie, size_t ie_len)
1847 {
1848         struct p2p_message msg;
1849         struct p2p_device *dev;
1850
1851         os_memset(&msg, 0, sizeof(msg));
1852         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1853         {
1854                 p2p_parse_free(&msg);
1855                 return; /* not a P2P probe */
1856         }
1857
1858         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1859             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1860             != 0) {
1861                 /* The Probe Request is not part of P2P Device Discovery. It is
1862                  * not known whether the source address of the frame is the P2P
1863                  * Device Address or P2P Interface Address. Do not add a new
1864                  * peer entry based on this frames.
1865                  */
1866                 p2p_parse_free(&msg);
1867                 return;
1868         }
1869
1870         dev = p2p_get_device(p2p, addr);
1871         if (dev) {
1872                 if (dev->country[0] == 0 && msg.listen_channel)
1873                         os_memcpy(dev->country, msg.listen_channel, 3);
1874                 os_get_reltime(&dev->last_seen);
1875                 p2p_parse_free(&msg);
1876                 return; /* already known */
1877         }
1878
1879         dev = p2p_create_device(p2p, addr);
1880         if (dev == NULL) {
1881                 p2p_parse_free(&msg);
1882                 return;
1883         }
1884
1885         os_get_reltime(&dev->last_seen);
1886         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1887
1888         if (msg.listen_channel) {
1889                 os_memcpy(dev->country, msg.listen_channel, 3);
1890                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1891                                                        msg.listen_channel[4]);
1892         }
1893
1894         p2p_copy_wps_info(p2p, dev, 1, &msg);
1895
1896         if (msg.wfd_subelems) {
1897                 wpabuf_free(dev->info.wfd_subelems);
1898                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1899         }
1900
1901         p2p_parse_free(&msg);
1902
1903         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1904                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1905                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1906                 dev->info.group_capab, dev->info.device_name,
1907                 dev->listen_freq);
1908 }
1909
1910
1911 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1912                                                 const u8 *addr,
1913                                                 struct p2p_message *msg)
1914 {
1915         struct p2p_device *dev;
1916
1917         dev = p2p_get_device(p2p, addr);
1918         if (dev) {
1919                 os_get_reltime(&dev->last_seen);
1920                 return dev; /* already known */
1921         }
1922
1923         dev = p2p_create_device(p2p, addr);
1924         if (dev == NULL)
1925                 return NULL;
1926
1927         p2p_add_dev_info(p2p, addr, dev, msg);
1928
1929         return dev;
1930 }
1931
1932
1933 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1934 {
1935         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1936                 return 1;
1937         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1938             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1939             WPA_GET_BE16(&req_dev_type[6]) == 0)
1940                 return 1; /* Category match with wildcard OUI/sub-category */
1941         return 0;
1942 }
1943
1944
1945 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1946                         size_t num_req_dev_type)
1947 {
1948         size_t i;
1949         for (i = 0; i < num_req_dev_type; i++) {
1950                 if (dev_type_match(dev_type, req_dev_type[i]))
1951                         return 1;
1952         }
1953         return 0;
1954 }
1955
1956
1957 /**
1958  * p2p_match_dev_type - Match local device type with requested type
1959  * @p2p: P2P module context from p2p_init()
1960  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1961  * Returns: 1 on match, 0 on mismatch
1962  *
1963  * This function can be used to match the Requested Device Type attribute in
1964  * WPS IE with the local device types for deciding whether to reply to a Probe
1965  * Request frame.
1966  */
1967 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1968 {
1969         struct wps_parse_attr attr;
1970         size_t i;
1971
1972         if (wps_parse_msg(wps, &attr))
1973                 return 1; /* assume no Requested Device Type attributes */
1974
1975         if (attr.num_req_dev_type == 0)
1976                 return 1; /* no Requested Device Type attributes -> match */
1977
1978         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1979                                 attr.num_req_dev_type))
1980                 return 1; /* Own Primary Device Type matches */
1981
1982         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1983                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1984                                         attr.req_dev_type,
1985                                         attr.num_req_dev_type))
1986                 return 1; /* Own Secondary Device Type matches */
1987
1988         /* No matching device type found */
1989         return 0;
1990 }
1991
1992
1993 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1994 {
1995         struct wpabuf *buf;
1996         u8 *len;
1997         int pw_id = -1;
1998         size_t extra = 0;
1999
2000 #ifdef CONFIG_WIFI_DISPLAY
2001         if (p2p->wfd_ie_probe_resp)
2002                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2003 #endif /* CONFIG_WIFI_DISPLAY */
2004
2005         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2006                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2007
2008         buf = wpabuf_alloc(1000 + extra);
2009         if (buf == NULL)
2010                 return NULL;
2011
2012         if (p2p->go_neg_peer) {
2013                 /* Advertise immediate availability of WPS credential */
2014                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2015         }
2016
2017         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2018                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2019                 wpabuf_free(buf);
2020                 return NULL;
2021         }
2022
2023 #ifdef CONFIG_WIFI_DISPLAY
2024         if (p2p->wfd_ie_probe_resp)
2025                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2026 #endif /* CONFIG_WIFI_DISPLAY */
2027
2028         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2029                 wpabuf_put_buf(buf,
2030                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2031
2032         /* P2P IE */
2033         len = p2p_buf_add_ie_hdr(buf);
2034         p2p_buf_add_capability(buf, p2p->dev_capab &
2035                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2036         if (p2p->ext_listen_interval)
2037                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2038                                               p2p->ext_listen_interval);
2039         p2p_buf_add_device_info(buf, p2p, NULL);
2040         p2p_buf_update_ie_hdr(buf, len);
2041
2042         return buf;
2043 }
2044
2045
2046 static enum p2p_probe_req_status
2047 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2048                 const u8 *bssid, const u8 *ie, size_t ie_len)
2049 {
2050         struct ieee802_11_elems elems;
2051         struct wpabuf *buf;
2052         struct ieee80211_mgmt *resp;
2053         struct p2p_message msg;
2054         struct wpabuf *ies;
2055
2056         if (!p2p->in_listen || !p2p->drv_in_listen) {
2057                 /* not in Listen state - ignore Probe Request */
2058                 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2059                         p2p->in_listen, p2p->drv_in_listen);
2060                 return P2P_PREQ_NOT_LISTEN;
2061         }
2062
2063         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2064             ParseFailed) {
2065                 /* Ignore invalid Probe Request frames */
2066                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2067                 return P2P_PREQ_MALFORMED;
2068         }
2069
2070         if (elems.p2p == NULL) {
2071                 /* not a P2P probe - ignore it */
2072                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2073                 return P2P_PREQ_NOT_P2P;
2074         }
2075
2076         if (dst && !is_broadcast_ether_addr(dst) &&
2077             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2078                 /* Not sent to the broadcast address or our P2P Device Address
2079                  */
2080                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2081                         MAC2STR(dst));
2082                 return P2P_PREQ_NOT_PROCESSED;
2083         }
2084
2085         if (bssid && !is_broadcast_ether_addr(bssid)) {
2086                 /* Not sent to the Wildcard BSSID */
2087                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2088                         MAC2STR(bssid));
2089                 return P2P_PREQ_NOT_PROCESSED;
2090         }
2091
2092         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2093             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2094             0) {
2095                 /* not using P2P Wildcard SSID - ignore */
2096                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2097                 return P2P_PREQ_NOT_PROCESSED;
2098         }
2099
2100         if (supp_rates_11b_only(&elems)) {
2101                 /* Indicates support for 11b rates only */
2102                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2103                 return P2P_PREQ_NOT_P2P;
2104         }
2105
2106         os_memset(&msg, 0, sizeof(msg));
2107         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2108                 /* Could not parse P2P attributes */
2109                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2110                 return P2P_PREQ_NOT_P2P;
2111         }
2112
2113         if (msg.device_id &&
2114             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2115                 /* Device ID did not match */
2116                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2117                         MAC2STR(msg.device_id));
2118                 p2p_parse_free(&msg);
2119                 return P2P_PREQ_NOT_PROCESSED;
2120         }
2121
2122         /* Check Requested Device Type match */
2123         if (msg.wps_attributes &&
2124             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2125                 /* No match with Requested Device Type */
2126                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2127                 p2p_parse_free(&msg);
2128                 return P2P_PREQ_NOT_PROCESSED;
2129         }
2130         p2p_parse_free(&msg);
2131
2132         if (!p2p->cfg->send_probe_resp) {
2133                 /* Response generated elsewhere */
2134                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2135                 return P2P_PREQ_NOT_PROCESSED;
2136         }
2137
2138         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2139
2140         /*
2141          * We do not really have a specific BSS that this frame is advertising,
2142          * so build a frame that has some information in valid format. This is
2143          * really only used for discovery purposes, not to learn exact BSS
2144          * parameters.
2145          */
2146         ies = p2p_build_probe_resp_ies(p2p);
2147         if (ies == NULL)
2148                 return P2P_PREQ_NOT_PROCESSED;
2149
2150         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2151         if (buf == NULL) {
2152                 wpabuf_free(ies);
2153                 return P2P_PREQ_NOT_PROCESSED;
2154         }
2155
2156         resp = NULL;
2157         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2158
2159         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2160                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2161         os_memcpy(resp->da, addr, ETH_ALEN);
2162         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2163         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2164         resp->u.probe_resp.beacon_int = host_to_le16(100);
2165         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2166         resp->u.probe_resp.capab_info =
2167                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2168                              WLAN_CAPABILITY_PRIVACY |
2169                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2170
2171         wpabuf_put_u8(buf, WLAN_EID_SSID);
2172         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2173         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2174
2175         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2176         wpabuf_put_u8(buf, 8);
2177         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2178         wpabuf_put_u8(buf, 90 / 5);
2179         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2180         wpabuf_put_u8(buf, 180 / 5);
2181         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2182         wpabuf_put_u8(buf, 360 / 5);
2183         wpabuf_put_u8(buf, 480 / 5);
2184         wpabuf_put_u8(buf, 540 / 5);
2185
2186         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2187         wpabuf_put_u8(buf, 1);
2188         wpabuf_put_u8(buf, p2p->cfg->channel);
2189
2190         wpabuf_put_buf(buf, ies);
2191         wpabuf_free(ies);
2192
2193         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2194
2195         wpabuf_free(buf);
2196
2197         return P2P_PREQ_NOT_PROCESSED;
2198 }
2199
2200
2201 enum p2p_probe_req_status
2202 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2203                  const u8 *bssid, const u8 *ie, size_t ie_len)
2204 {
2205         enum p2p_probe_req_status res;
2206
2207         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2208
2209         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2210
2211         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2212             p2p->go_neg_peer &&
2213             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2214             == 0 &&
2215             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2216                 /* Received a Probe Request from GO Negotiation peer */
2217                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2218                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2219                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2220                 return P2P_PREQ_PROCESSED;
2221         }
2222
2223         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2224             p2p->invite_peer &&
2225             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2226             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2227             == 0) {
2228                 /* Received a Probe Request from Invite peer */
2229                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2230                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2231                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2232                 return P2P_PREQ_PROCESSED;
2233         }
2234
2235         return res;
2236 }
2237
2238
2239 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2240                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2241 {
2242         struct wpabuf *tmp;
2243         u8 *lpos;
2244         size_t tmplen;
2245         int res;
2246         u8 group_capab;
2247
2248         if (p2p_ie == NULL)
2249                 return 0; /* WLAN AP is not a P2P manager */
2250
2251         /*
2252          * (Re)Association Request - P2P IE
2253          * P2P Capability attribute (shall be present)
2254          * P2P Interface attribute (present if concurrent device and
2255          *      P2P Management is enabled)
2256          */
2257         tmp = wpabuf_alloc(200);
2258         if (tmp == NULL)
2259                 return -1;
2260
2261         lpos = p2p_buf_add_ie_hdr(tmp);
2262         group_capab = 0;
2263         if (p2p->num_groups > 0) {
2264                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2265                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2266                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2267                     p2p->cross_connect)
2268                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2269         }
2270         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2271         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2272             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2273                 p2p_buf_add_p2p_interface(tmp, p2p);
2274         p2p_buf_update_ie_hdr(tmp, lpos);
2275
2276         tmplen = wpabuf_len(tmp);
2277         if (tmplen > len)
2278                 res = -1;
2279         else {
2280                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2281                 res = tmplen;
2282         }
2283         wpabuf_free(tmp);
2284
2285         return res;
2286 }
2287
2288
2289 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2290                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2291 {
2292         struct wpabuf *tmp;
2293         u8 *lpos;
2294         struct p2p_device *peer;
2295         size_t tmplen;
2296         int res;
2297         size_t extra = 0;
2298
2299         if (!p2p_group)
2300                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2301
2302 #ifdef CONFIG_WIFI_DISPLAY
2303         if (p2p->wfd_ie_assoc_req)
2304                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2305 #endif /* CONFIG_WIFI_DISPLAY */
2306
2307         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2308                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2309
2310         /*
2311          * (Re)Association Request - P2P IE
2312          * P2P Capability attribute (shall be present)
2313          * Extended Listen Timing (may be present)
2314          * P2P Device Info attribute (shall be present)
2315          */
2316         tmp = wpabuf_alloc(200 + extra);
2317         if (tmp == NULL)
2318                 return -1;
2319
2320 #ifdef CONFIG_WIFI_DISPLAY
2321         if (p2p->wfd_ie_assoc_req)
2322                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2323 #endif /* CONFIG_WIFI_DISPLAY */
2324
2325         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2326                 wpabuf_put_buf(tmp,
2327                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2328
2329         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2330
2331         lpos = p2p_buf_add_ie_hdr(tmp);
2332         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2333         if (p2p->ext_listen_interval)
2334                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2335                                               p2p->ext_listen_interval);
2336         p2p_buf_add_device_info(tmp, p2p, peer);
2337         p2p_buf_update_ie_hdr(tmp, lpos);
2338
2339         tmplen = wpabuf_len(tmp);
2340         if (tmplen > len)
2341                 res = -1;
2342         else {
2343                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2344                 res = tmplen;
2345         }
2346         wpabuf_free(tmp);
2347
2348         return res;
2349 }
2350
2351
2352 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2353 {
2354         struct wpabuf *p2p_ie;
2355         int ret;
2356
2357         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2358         if (p2p_ie == NULL)
2359                 return 0;
2360
2361         ret = p2p_attr_text(p2p_ie, buf, end);
2362         wpabuf_free(p2p_ie);
2363         return ret;
2364 }
2365
2366
2367 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2368 {
2369         struct p2p_message msg;
2370
2371         os_memset(&msg, 0, sizeof(msg));
2372         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2373                 return -1;
2374
2375         if (msg.p2p_device_addr) {
2376                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2377                 return 0;
2378         } else if (msg.device_id) {
2379                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2380                 return 0;
2381         }
2382         return -1;
2383 }
2384
2385
2386 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2387 {
2388         struct wpabuf *p2p_ie;
2389         int ret;
2390
2391         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2392                                              P2P_IE_VENDOR_TYPE);
2393         if (p2p_ie == NULL)
2394                 return -1;
2395         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2396         wpabuf_free(p2p_ie);
2397         return ret;
2398 }
2399
2400
2401 static void p2p_clear_go_neg(struct p2p_data *p2p)
2402 {
2403         p2p->go_neg_peer = NULL;
2404         p2p_clear_timeout(p2p);
2405         p2p_set_state(p2p, P2P_IDLE);
2406 }
2407
2408
2409 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2410 {
2411         if (p2p->go_neg_peer == NULL) {
2412                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2413                 return; /* No pending Group Formation */
2414         }
2415
2416         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2417             0) {
2418                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2419                         MACSTR " (GO Negotiation peer " MACSTR ")",
2420                         MAC2STR(mac_addr),
2421                         MAC2STR(p2p->go_neg_peer->intended_addr));
2422                 return; /* Ignore unexpected peer address */
2423         }
2424
2425         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2426                 MAC2STR(mac_addr));
2427
2428         p2p_clear_go_neg(p2p);
2429 }
2430
2431
2432 void p2p_group_formation_failed(struct p2p_data *p2p)
2433 {
2434         if (p2p->go_neg_peer == NULL) {
2435                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2436                 return; /* No pending Group Formation */
2437         }
2438
2439         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2440                 MAC2STR(p2p->go_neg_peer->intended_addr));
2441
2442         p2p_clear_go_neg(p2p);
2443 }
2444
2445
2446 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2447 {
2448         struct p2p_data *p2p;
2449
2450         if (cfg->max_peers < 1 ||
2451             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2452                 return NULL;
2453
2454         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2455         if (p2p == NULL)
2456                 return NULL;
2457         p2p->cfg = (struct p2p_config *) (p2p + 1);
2458         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2459         if (cfg->dev_name)
2460                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2461         if (cfg->manufacturer)
2462                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2463         if (cfg->model_name)
2464                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2465         if (cfg->model_number)
2466                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2467         if (cfg->serial_number)
2468                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2469         if (cfg->pref_chan) {
2470                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2471                                                 sizeof(struct p2p_channel));
2472                 if (p2p->cfg->pref_chan) {
2473                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2474                                   cfg->num_pref_chan *
2475                                   sizeof(struct p2p_channel));
2476                 } else
2477                         p2p->cfg->num_pref_chan = 0;
2478         }
2479
2480         p2p->min_disc_int = 1;
2481         p2p->max_disc_int = 3;
2482         p2p->max_disc_tu = -1;
2483
2484         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2485                 p2p->next_tie_breaker = 0;
2486         p2p->next_tie_breaker &= 0x01;
2487         if (cfg->sd_request)
2488                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2489         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2490         if (cfg->concurrent_operations)
2491                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2492         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2493
2494         dl_list_init(&p2p->devices);
2495
2496         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2497                                p2p_expiration_timeout, p2p, NULL);
2498
2499         p2p->go_timeout = 100;
2500         p2p->client_timeout = 20;
2501         p2p->num_p2p_sd_queries = 0;
2502
2503         p2p_dbg(p2p, "initialized");
2504         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2505         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2506
2507         return p2p;
2508 }
2509
2510
2511 void p2p_deinit(struct p2p_data *p2p)
2512 {
2513 #ifdef CONFIG_WIFI_DISPLAY
2514         wpabuf_free(p2p->wfd_ie_beacon);
2515         wpabuf_free(p2p->wfd_ie_probe_req);
2516         wpabuf_free(p2p->wfd_ie_probe_resp);
2517         wpabuf_free(p2p->wfd_ie_assoc_req);
2518         wpabuf_free(p2p->wfd_ie_invitation);
2519         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2520         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2521         wpabuf_free(p2p->wfd_ie_go_neg);
2522         wpabuf_free(p2p->wfd_dev_info);
2523         wpabuf_free(p2p->wfd_assoc_bssid);
2524         wpabuf_free(p2p->wfd_coupled_sink_info);
2525 #endif /* CONFIG_WIFI_DISPLAY */
2526
2527         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2528         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2529         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2530         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2531         p2p_flush(p2p);
2532         p2p_free_req_dev_types(p2p);
2533         os_free(p2p->cfg->dev_name);
2534         os_free(p2p->cfg->manufacturer);
2535         os_free(p2p->cfg->model_name);
2536         os_free(p2p->cfg->model_number);
2537         os_free(p2p->cfg->serial_number);
2538         os_free(p2p->cfg->pref_chan);
2539         os_free(p2p->groups);
2540         wpabuf_free(p2p->sd_resp);
2541         os_free(p2p->after_scan_tx);
2542         p2p_remove_wps_vendor_extensions(p2p);
2543         os_free(p2p->no_go_freq.range);
2544         os_free(p2p);
2545 }
2546
2547
2548 void p2p_flush(struct p2p_data *p2p)
2549 {
2550         struct p2p_device *dev, *prev;
2551         p2p_stop_find(p2p);
2552         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2553                               list) {
2554                 dl_list_del(&dev->list);
2555                 p2p_device_free(p2p, dev);
2556         }
2557         p2p_free_sd_queries(p2p);
2558         os_free(p2p->after_scan_tx);
2559         p2p->after_scan_tx = NULL;
2560 }
2561
2562
2563 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2564 {
2565         struct p2p_device *dev;
2566
2567         dev = p2p_get_device(p2p, addr);
2568         if (dev == NULL)
2569                 return -1;
2570
2571         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2572
2573         if (p2p->go_neg_peer == dev)
2574                 p2p->go_neg_peer = NULL;
2575
2576         dev->wps_method = WPS_NOT_READY;
2577         dev->oob_pw_id = 0;
2578         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2579         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2580
2581         /* Check if after_scan_tx is for this peer. If so free it */
2582         if (p2p->after_scan_tx &&
2583             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2584                 os_free(p2p->after_scan_tx);
2585                 p2p->after_scan_tx = NULL;
2586         }
2587
2588         return 0;
2589 }
2590
2591
2592 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2593 {
2594         os_free(p2p->cfg->dev_name);
2595         if (dev_name) {
2596                 p2p->cfg->dev_name = os_strdup(dev_name);
2597                 if (p2p->cfg->dev_name == NULL)
2598                         return -1;
2599         } else
2600                 p2p->cfg->dev_name = NULL;
2601         return 0;
2602 }
2603
2604
2605 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2606 {
2607         os_free(p2p->cfg->manufacturer);
2608         p2p->cfg->manufacturer = NULL;
2609         if (manufacturer) {
2610                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2611                 if (p2p->cfg->manufacturer == NULL)
2612                         return -1;
2613         }
2614
2615         return 0;
2616 }
2617
2618
2619 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2620 {
2621         os_free(p2p->cfg->model_name);
2622         p2p->cfg->model_name = NULL;
2623         if (model_name) {
2624                 p2p->cfg->model_name = os_strdup(model_name);
2625                 if (p2p->cfg->model_name == NULL)
2626                         return -1;
2627         }
2628
2629         return 0;
2630 }
2631
2632
2633 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2634 {
2635         os_free(p2p->cfg->model_number);
2636         p2p->cfg->model_number = NULL;
2637         if (model_number) {
2638                 p2p->cfg->model_number = os_strdup(model_number);
2639                 if (p2p->cfg->model_number == NULL)
2640                         return -1;
2641         }
2642
2643         return 0;
2644 }
2645
2646
2647 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2648 {
2649         os_free(p2p->cfg->serial_number);
2650         p2p->cfg->serial_number = NULL;
2651         if (serial_number) {
2652                 p2p->cfg->serial_number = os_strdup(serial_number);
2653                 if (p2p->cfg->serial_number == NULL)
2654                         return -1;
2655         }
2656
2657         return 0;
2658 }
2659
2660
2661 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2662 {
2663         p2p->cfg->config_methods = config_methods;
2664 }
2665
2666
2667 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2668 {
2669         os_memcpy(p2p->cfg->uuid, uuid, 16);
2670 }
2671
2672
2673 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2674 {
2675         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2676         return 0;
2677 }
2678
2679
2680 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2681                           size_t num_dev_types)
2682 {
2683         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2684                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2685         p2p->cfg->num_sec_dev_types = num_dev_types;
2686         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2687         return 0;
2688 }
2689
2690
2691 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2692 {
2693         int i;
2694
2695         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2696                 wpabuf_free(p2p->wps_vendor_ext[i]);
2697                 p2p->wps_vendor_ext[i] = NULL;
2698         }
2699 }
2700
2701
2702 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2703                                  const struct wpabuf *vendor_ext)
2704 {
2705         int i;
2706
2707         if (vendor_ext == NULL)
2708                 return -1;
2709
2710         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2711                 if (p2p->wps_vendor_ext[i] == NULL)
2712                         break;
2713         }
2714         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2715                 return -1;
2716
2717         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2718         if (p2p->wps_vendor_ext[i] == NULL)
2719                 return -1;
2720
2721         return 0;
2722 }
2723
2724
2725 int p2p_set_country(struct p2p_data *p2p, const char *country)
2726 {
2727         os_memcpy(p2p->cfg->country, country, 3);
2728         return 0;
2729 }
2730
2731
2732 void p2p_continue_find(struct p2p_data *p2p)
2733 {
2734         struct p2p_device *dev;
2735         p2p_set_state(p2p, P2P_SEARCH);
2736         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2737                 if (dev->sd_pending_bcast_queries == 0) {
2738                         /* Initialize with total number of registered broadcast
2739                          * SD queries. */
2740                         dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2741                 }
2742
2743                 if (p2p_start_sd(p2p, dev) == 0)
2744                         return;
2745                 if (dev->req_config_methods &&
2746                     !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2747                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2748                                 MACSTR " (config methods 0x%x)",
2749                                 MAC2STR(dev->info.p2p_device_addr),
2750                                 dev->req_config_methods);
2751                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2752                                 return;
2753                 }
2754         }
2755
2756         p2p_listen_in_find(p2p, 1);
2757 }
2758
2759
2760 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2761 {
2762         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2763                 success);
2764         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2765
2766         if (!success) {
2767                 p2p->sd_peer = NULL;
2768                 p2p_continue_find(p2p);
2769                 return;
2770         }
2771
2772         if (p2p->sd_peer == NULL) {
2773                 p2p_dbg(p2p, "No SD peer entry known");
2774                 p2p_continue_find(p2p);
2775                 return;
2776         }
2777
2778         /* Wait for response from the peer */
2779         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2780         p2p_set_timeout(p2p, 0, 200000);
2781 }
2782
2783
2784 /**
2785  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2786  * @p2p: P2P module context from p2p_init()
2787  */
2788 static void p2p_retry_pd(struct p2p_data *p2p)
2789 {
2790         struct p2p_device *dev;
2791
2792         if (p2p->state != P2P_IDLE)
2793                 return;
2794
2795         /*
2796          * Retry the prov disc req attempt only for the peer that the user had
2797          * requested.
2798          */
2799
2800         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2801                 if (os_memcmp(p2p->pending_pd_devaddr,
2802                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2803                         continue;
2804                 if (!dev->req_config_methods)
2805                         continue;
2806
2807                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2808                         MACSTR " (config methods 0x%x)",
2809                         MAC2STR(dev->info.p2p_device_addr),
2810                         dev->req_config_methods);
2811                 p2p_send_prov_disc_req(p2p, dev,
2812                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2813                                        p2p->pd_force_freq);
2814                 return;
2815         }
2816 }
2817
2818
2819 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2820 {
2821         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2822                 success);
2823
2824         /*
2825          * Postpone resetting the pending action state till after we actually
2826          * time out. This allows us to take some action like notifying any
2827          * interested parties about no response to the request.
2828          *
2829          * When the timer (below) goes off we check in IDLE, SEARCH, or
2830          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2831          * requests in, if this was still pending and then raise notification.
2832          */
2833
2834         if (!success) {
2835                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2836
2837                 if (p2p->user_initiated_pd &&
2838                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2839                 {
2840                         /* Retry request from timeout to avoid busy loops */
2841                         p2p->pending_action_state = P2P_PENDING_PD;
2842                         p2p_set_timeout(p2p, 0, 50000);
2843                 } else if (p2p->state != P2P_IDLE)
2844                         p2p_continue_find(p2p);
2845                 else if (p2p->user_initiated_pd) {
2846                         p2p->pending_action_state = P2P_PENDING_PD;
2847                         p2p_set_timeout(p2p, 0, 300000);
2848                 }
2849                 return;
2850         }
2851
2852         /*
2853          * This postponing, of resetting pending_action_state, needs to be
2854          * done only for user initiated PD requests and not internal ones.
2855          */
2856         if (p2p->user_initiated_pd)
2857                 p2p->pending_action_state = P2P_PENDING_PD;
2858         else
2859                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2860
2861         /* Wait for response from the peer */
2862         if (p2p->state == P2P_SEARCH)
2863                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2864         p2p_set_timeout(p2p, 0, 200000);
2865 }
2866
2867
2868 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2869                          struct os_reltime *rx_time, int level, const u8 *ies,
2870                          size_t ies_len)
2871 {
2872         if (os_reltime_before(rx_time, &p2p->find_start)) {
2873                 /*
2874                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2875                  * scan results for relatively long time. To avoid reporting
2876                  * stale information, update P2P peers only based on results
2877                  * that have based on frames received after the last p2p_find
2878                  * operation was started.
2879                  */
2880                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2881                         " (rx_time=%u.%06u)",
2882                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2883                         (unsigned int) rx_time->usec);
2884                 return 0;
2885         }
2886
2887         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2888
2889         return 0;
2890 }
2891
2892
2893 void p2p_scan_res_handled(struct p2p_data *p2p)
2894 {
2895         if (!p2p->p2p_scan_running) {
2896                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2897         }
2898         p2p->p2p_scan_running = 0;
2899         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2900
2901         if (p2p_run_after_scan(p2p))
2902                 return;
2903         if (p2p->state == P2P_SEARCH)
2904                 p2p_continue_find(p2p);
2905 }
2906
2907
2908 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2909 {
2910         u8 *len;
2911
2912 #ifdef CONFIG_WIFI_DISPLAY
2913         if (p2p->wfd_ie_probe_req)
2914                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2915 #endif /* CONFIG_WIFI_DISPLAY */
2916
2917         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2918                 wpabuf_put_buf(ies,
2919                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2920
2921         len = p2p_buf_add_ie_hdr(ies);
2922         p2p_buf_add_capability(ies, p2p->dev_capab &
2923                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2924         if (dev_id)
2925                 p2p_buf_add_device_id(ies, dev_id);
2926         if (p2p->cfg->reg_class && p2p->cfg->channel)
2927                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2928                                            p2p->cfg->reg_class,
2929                                            p2p->cfg->channel);
2930         if (p2p->ext_listen_interval)
2931                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2932                                               p2p->ext_listen_interval);
2933         /* TODO: p2p_buf_add_operating_channel() if GO */
2934         p2p_buf_update_ie_hdr(ies, len);
2935 }
2936
2937
2938 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2939 {
2940         size_t len = 100;
2941
2942 #ifdef CONFIG_WIFI_DISPLAY
2943         if (p2p && p2p->wfd_ie_probe_req)
2944                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2945 #endif /* CONFIG_WIFI_DISPLAY */
2946
2947         if (p2p && p2p->vendor_elem &&
2948             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2949                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2950
2951         return len;
2952 }
2953
2954
2955 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2956 {
2957         return p2p_attr_text(p2p_ie, buf, end);
2958 }
2959
2960
2961 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2962 {
2963         struct p2p_device *dev = p2p->go_neg_peer;
2964         int timeout;
2965
2966         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2967
2968         if (dev == NULL) {
2969                 p2p_dbg(p2p, "No pending GO Negotiation");
2970                 return;
2971         }
2972
2973         if (success) {
2974                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2975                         p2p_set_state(p2p, P2P_IDLE);
2976                         return;
2977                 }
2978         } else if (dev->go_neg_req_sent) {
2979                 /* Cancel the increment from p2p_connect_send() on failure */
2980                 dev->go_neg_req_sent--;
2981         }
2982
2983         if (!success &&
2984             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2985             !is_zero_ether_addr(dev->member_in_go_dev)) {
2986                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2987                         MAC2STR(dev->info.p2p_device_addr));
2988                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2989                 p2p_send_dev_disc_req(p2p, dev);
2990                 return;
2991         }
2992
2993         /*
2994          * Use P2P find, if needed, to find the other device from its listen
2995          * channel.
2996          */
2997         p2p_set_state(p2p, P2P_CONNECT);
2998         timeout = success ? 500000 : 100000;
2999         if (!success && p2p->go_neg_peer &&
3000             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3001                 unsigned int r;
3002                 /*
3003                  * Peer is expected to wait our response and we will skip the
3004                  * listen phase. Add some randomness to the wait time here to
3005                  * make it less likely to hit cases where we could end up in
3006                  * sync with peer not listening.
3007                  */
3008                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3009                         r = 0;
3010                 timeout += r % 100000;
3011         }
3012         p2p_set_timeout(p2p, 0, timeout);
3013 }
3014
3015
3016 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3017 {
3018         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3019                 success);
3020         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3021                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3022                 return;
3023         }
3024         p2p_set_state(p2p, P2P_CONNECT);
3025         p2p_set_timeout(p2p, 0, 500000);
3026 }
3027
3028
3029 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3030                                        const u8 *addr)
3031 {
3032         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3033         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3034                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3035                                   p2p->go_neg_peer->status);
3036         } else if (success) {
3037                 struct p2p_device *dev;
3038                 dev = p2p_get_device(p2p, addr);
3039                 if (dev &&
3040                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3041                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3042         }
3043 }
3044
3045
3046 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3047                                enum p2p_send_action_result result)
3048 {
3049         struct p2p_device *dev;
3050
3051         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3052         if (result == P2P_SEND_ACTION_FAILED) {
3053                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3054                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3055                 return;
3056         }
3057
3058         dev = p2p->go_neg_peer;
3059
3060         if (result == P2P_SEND_ACTION_NO_ACK) {
3061                 /*
3062                  * Retry GO Negotiation Confirmation
3063                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3064                  * ACK for confirmation.
3065                  */
3066                 if (dev && dev->go_neg_conf &&
3067                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3068                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3069                                 dev->go_neg_conf_sent);
3070                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3071                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3072                                             dev->info.p2p_device_addr,
3073                                             p2p->cfg->dev_addr,
3074                                             dev->info.p2p_device_addr,
3075                                             wpabuf_head(dev->go_neg_conf),
3076                                             wpabuf_len(dev->go_neg_conf), 0) >=
3077                             0) {
3078                                 dev->go_neg_conf_sent++;
3079                                 return;
3080                         }
3081                         p2p_dbg(p2p, "Failed to re-send Action frame");
3082
3083                         /*
3084                          * Continue with the assumption that the first attempt
3085                          * went through and just the ACK frame was lost.
3086                          */
3087                 }
3088
3089                 /*
3090                  * It looks like the TX status for GO Negotiation Confirm is
3091                  * often showing failure even when the peer has actually
3092                  * received the frame. Since the peer may change channels
3093                  * immediately after having received the frame, we may not see
3094                  * an Ack for retries, so just dropping a single frame may
3095                  * trigger this. To allow the group formation to succeed if the
3096                  * peer did indeed receive the frame, continue regardless of
3097                  * the TX status.
3098                  */
3099                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3100         }
3101
3102         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3103
3104         if (dev == NULL)
3105                 return;
3106
3107         p2p_go_complete(p2p, dev);
3108 }
3109
3110
3111 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3112                         const u8 *src, const u8 *bssid,
3113                         enum p2p_send_action_result result)
3114 {
3115         enum p2p_pending_action_state state;
3116         int success;
3117
3118         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3119                 " src=" MACSTR " bssid=" MACSTR " result=%d",
3120                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3121                 MAC2STR(bssid), result);
3122         success = result == P2P_SEND_ACTION_SUCCESS;
3123         state = p2p->pending_action_state;
3124         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3125         switch (state) {
3126         case P2P_NO_PENDING_ACTION:
3127                 if (p2p->send_action_in_progress) {
3128                         p2p->send_action_in_progress = 0;
3129                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3130                 }
3131                 if (p2p->after_scan_tx_in_progress) {
3132                         p2p->after_scan_tx_in_progress = 0;
3133                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3134                             p2p_run_after_scan(p2p))
3135                                 break;
3136                         if (p2p->state == P2P_SEARCH) {
3137                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3138                                 p2p_continue_find(p2p);
3139                         }
3140                 }
3141                 break;
3142         case P2P_PENDING_GO_NEG_REQUEST:
3143                 p2p_go_neg_req_cb(p2p, success);
3144                 break;
3145         case P2P_PENDING_GO_NEG_RESPONSE:
3146                 p2p_go_neg_resp_cb(p2p, success);
3147                 break;
3148         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3149                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3150                 break;
3151         case P2P_PENDING_GO_NEG_CONFIRM:
3152                 p2p_go_neg_conf_cb(p2p, result);
3153                 break;
3154         case P2P_PENDING_SD:
3155                 p2p_sd_cb(p2p, success);
3156                 break;
3157         case P2P_PENDING_PD:
3158                 p2p_prov_disc_cb(p2p, success);
3159                 break;
3160         case P2P_PENDING_INVITATION_REQUEST:
3161                 p2p_invitation_req_cb(p2p, success);
3162                 break;
3163         case P2P_PENDING_INVITATION_RESPONSE:
3164                 p2p_invitation_resp_cb(p2p, success);
3165                 break;
3166         case P2P_PENDING_DEV_DISC_REQUEST:
3167                 p2p_dev_disc_req_cb(p2p, success);
3168                 break;
3169         case P2P_PENDING_DEV_DISC_RESPONSE:
3170                 p2p_dev_disc_resp_cb(p2p, success);
3171                 break;
3172         case P2P_PENDING_GO_DISC_REQ:
3173                 p2p_go_disc_req_cb(p2p, success);
3174                 break;
3175         }
3176
3177         p2p->after_scan_tx_in_progress = 0;
3178 }
3179
3180
3181 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3182                    unsigned int duration)
3183 {
3184         if (freq == p2p->pending_client_disc_freq) {
3185                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3186                 p2p->pending_client_disc_freq = 0;
3187                 return;
3188         }
3189
3190         if (freq != p2p->pending_listen_freq) {
3191                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3192                         freq, duration, p2p->pending_listen_freq);
3193                 return;
3194         }
3195
3196         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3197                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3198                 p2p->pending_listen_freq);
3199         p2p->in_listen = 1;
3200         p2p->drv_in_listen = freq;
3201         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3202                 /*
3203                  * Add 20 msec extra wait to avoid race condition with driver
3204                  * remain-on-channel end event, i.e., give driver more time to
3205                  * complete the operation before our timeout expires.
3206                  */
3207                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3208                                 p2p->pending_listen_usec + 20000);
3209         }
3210
3211         p2p->pending_listen_freq = 0;
3212 }
3213
3214
3215 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3216 {
3217         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3218         p2p->drv_in_listen = 0;
3219         if (p2p->in_listen)
3220                 return 0; /* Internal timeout will trigger the next step */
3221
3222         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3223                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3224                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3225                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3226                         return 0;
3227                 }
3228
3229                 p2p_set_state(p2p, P2P_CONNECT);
3230                 p2p_connect_send(p2p, p2p->go_neg_peer);
3231                 return 1;
3232         } else if (p2p->state == P2P_SEARCH) {
3233                 if (p2p->p2p_scan_running) {
3234                          /*
3235                           * Search is already in progress. This can happen if
3236                           * an Action frame RX is reported immediately after
3237                           * the end of a remain-on-channel operation and the
3238                           * response frame to that is sent using an offchannel
3239                           * operation while in p2p_find. Avoid an attempt to
3240                           * restart a scan here.
3241                           */
3242                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3243                         return 1;
3244                 }
3245                 if (p2p->pending_listen_freq) {
3246                         /*
3247                          * Better wait a bit if the driver is unable to start
3248                          * offchannel operation for some reason. p2p_search()
3249                          * will be started from internal timeout.
3250                          */
3251                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3252                         p2p_set_timeout(p2p, 0, 100000);
3253                         return 1;
3254                 }
3255                 if (p2p->search_delay) {
3256                         p2p_dbg(p2p, "Delay search operation by %u ms",
3257                                 p2p->search_delay);
3258                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3259                                         (p2p->search_delay % 1000) * 1000);
3260                         return 1;
3261                 }
3262                 p2p_search(p2p);
3263                 return 1;
3264         }
3265
3266         return 0;
3267 }
3268
3269
3270 static void p2p_timeout_connect(struct p2p_data *p2p)
3271 {
3272         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3273         if (p2p->go_neg_peer &&
3274             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3275                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3276                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3277                 return;
3278         }
3279         if (p2p->go_neg_peer &&
3280             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3281             p2p->go_neg_peer->connect_reqs < 120) {
3282                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3283                 p2p_connect_send(p2p, p2p->go_neg_peer);
3284                 return;
3285         }
3286         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3287                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3288                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3289                 p2p_set_timeout(p2p, 0, 30000);
3290                 return;
3291         }
3292         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3293         p2p_listen_in_find(p2p, 0);
3294 }
3295
3296
3297 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3298 {
3299         if (p2p->go_neg_peer) {
3300                 if (p2p->drv_in_listen) {
3301                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3302                         return;
3303                 }
3304
3305                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3306                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3307                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3308                         return;
3309                 }
3310
3311                 p2p_set_state(p2p, P2P_CONNECT);
3312                 p2p_connect_send(p2p, p2p->go_neg_peer);
3313         } else
3314                 p2p_set_state(p2p, P2P_IDLE);
3315 }
3316
3317
3318 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3319 {
3320         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3321
3322         if (p2p->cfg->is_concurrent_session_active &&
3323             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3324                 p2p_set_timeout(p2p, 0, 500000);
3325         else
3326                 p2p_set_timeout(p2p, 0, 200000);
3327 }
3328
3329
3330 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3331 {
3332         struct p2p_device *dev = p2p->go_neg_peer;
3333         struct os_reltime now;
3334
3335         if (dev == NULL) {
3336                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3337                 return;
3338         }
3339
3340         os_get_reltime(&now);
3341         if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
3342                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3343                 p2p_go_neg_failed(p2p, dev, -1);
3344                 return;
3345         }
3346
3347         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3348         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3349         p2p_listen_in_find(p2p, 0);
3350 }
3351
3352
3353 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3354 {
3355         p2p_dbg(p2p, "Service Discovery Query timeout");
3356         if (p2p->sd_peer) {
3357                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3358                 p2p->sd_peer = NULL;
3359         }
3360         p2p_continue_find(p2p);
3361 }
3362
3363
3364 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3365 {
3366         p2p_dbg(p2p, "Provision Discovery Request timeout");
3367         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3368         p2p_continue_find(p2p);
3369 }
3370
3371
3372 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3373 {
3374         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3375
3376         /*
3377          * For user initiated PD requests that we have not gotten any responses
3378          * for while in IDLE state, we retry them a couple of times before
3379          * giving up.
3380          */
3381         if (!p2p->user_initiated_pd)
3382                 return;
3383
3384         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3385
3386         if (p2p->pd_retries) {
3387                 p2p->pd_retries--;
3388                 p2p_retry_pd(p2p);
3389         } else {
3390                 struct p2p_device *dev;
3391                 int for_join = 0;
3392
3393                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3394                         if (os_memcmp(p2p->pending_pd_devaddr,
3395                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3396                                 continue;
3397                         if (dev->req_config_methods &&
3398                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3399                                 for_join = 1;
3400                 }
3401
3402                 if (p2p->cfg->prov_disc_fail)
3403                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3404                                                  p2p->pending_pd_devaddr,
3405                                                  for_join ?
3406                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3407                                                  P2P_PROV_DISC_TIMEOUT);
3408                 p2p_reset_pending_pd(p2p);
3409         }
3410 }
3411
3412
3413 static void p2p_timeout_invite(struct p2p_data *p2p)
3414 {
3415         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3416         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3417         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3418                 /*
3419                  * Better remain on operating channel instead of listen channel
3420                  * when running a group.
3421                  */
3422                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3423                 p2p_set_timeout(p2p, 0, 100000);
3424                 return;
3425         }
3426         p2p_listen_in_find(p2p, 0);
3427 }
3428
3429
3430 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3431 {
3432         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3433                 p2p_set_state(p2p, P2P_INVITE);
3434                 p2p_invite_send(p2p, p2p->invite_peer,
3435                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3436         } else {
3437                 if (p2p->invite_peer) {
3438                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3439                         if (p2p->cfg->invitation_result)
3440                                 p2p->cfg->invitation_result(
3441                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3442                                         p2p->invite_peer->info.p2p_device_addr,
3443                                         0, 0);
3444                 }
3445                 p2p_set_state(p2p, P2P_IDLE);
3446         }
3447 }
3448
3449
3450 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3451 {
3452         struct p2p_data *p2p = eloop_ctx;
3453
3454         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3455
3456         p2p->in_listen = 0;
3457
3458         switch (p2p->state) {
3459         case P2P_IDLE:
3460                 /* Check if we timed out waiting for PD req */
3461                 if (p2p->pending_action_state == P2P_PENDING_PD)
3462                         p2p_timeout_prov_disc_req(p2p);
3463                 break;
3464         case P2P_SEARCH:
3465                 /* Check if we timed out waiting for PD req */
3466                 if (p2p->pending_action_state == P2P_PENDING_PD)
3467                         p2p_timeout_prov_disc_req(p2p);
3468                 if (p2p->search_delay && !p2p->in_search_delay) {
3469                         p2p_dbg(p2p, "Delay search operation by %u ms",
3470                                 p2p->search_delay);
3471                         p2p->in_search_delay = 1;
3472                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3473                                         (p2p->search_delay % 1000) * 1000);
3474                         break;
3475                 }
3476                 p2p->in_search_delay = 0;
3477                 p2p_search(p2p);
3478                 break;
3479         case P2P_CONNECT:
3480                 p2p_timeout_connect(p2p);
3481                 break;
3482         case P2P_CONNECT_LISTEN:
3483                 p2p_timeout_connect_listen(p2p);
3484                 break;
3485         case P2P_GO_NEG:
3486                 break;
3487         case P2P_LISTEN_ONLY:
3488                 /* Check if we timed out waiting for PD req */
3489                 if (p2p->pending_action_state == P2P_PENDING_PD)
3490                         p2p_timeout_prov_disc_req(p2p);
3491
3492                 if (p2p->ext_listen_only) {
3493                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3494                         p2p->ext_listen_only = 0;
3495                         p2p_set_state(p2p, P2P_IDLE);
3496                 }
3497                 break;
3498         case P2P_WAIT_PEER_CONNECT:
3499                 p2p_timeout_wait_peer_connect(p2p);
3500                 break;
3501         case P2P_WAIT_PEER_IDLE:
3502                 p2p_timeout_wait_peer_idle(p2p);
3503                 break;
3504         case P2P_SD_DURING_FIND:
3505                 p2p_timeout_sd_during_find(p2p);
3506                 break;
3507         case P2P_PROVISIONING:
3508                 break;
3509         case P2P_PD_DURING_FIND:
3510                 p2p_timeout_prov_disc_during_find(p2p);
3511                 break;
3512         case P2P_INVITE:
3513                 p2p_timeout_invite(p2p);
3514                 break;
3515         case P2P_INVITE_LISTEN:
3516                 p2p_timeout_invite_listen(p2p);
3517                 break;
3518         }
3519 }
3520
3521
3522 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3523 {
3524         struct p2p_device *dev;
3525
3526         dev = p2p_get_device(p2p, peer_addr);
3527         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3528                 MACSTR, MAC2STR(peer_addr));
3529         if (dev == NULL) {
3530                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3531                 return -1;
3532         }
3533         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3534         dev->flags |= P2P_DEV_USER_REJECTED;
3535         return 0;
3536 }
3537
3538
3539 const char * p2p_wps_method_text(enum p2p_wps_method method)
3540 {
3541         switch (method) {
3542         case WPS_NOT_READY:
3543                 return "not-ready";
3544         case WPS_PIN_DISPLAY:
3545                 return "Display";
3546         case WPS_PIN_KEYPAD:
3547                 return "Keypad";
3548         case WPS_PBC:
3549                 return "PBC";
3550         case WPS_NFC:
3551                 return "NFC";
3552         }
3553
3554         return "??";
3555 }
3556
3557
3558 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3559 {
3560         switch (go_state) {
3561         case UNKNOWN_GO:
3562                 return "unknown";
3563         case LOCAL_GO:
3564                 return "local";
3565         case  REMOTE_GO:
3566                 return "remote";
3567         }
3568
3569         return "??";
3570 }
3571
3572
3573 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3574                                                const u8 *addr, int next)
3575 {
3576         struct p2p_device *dev;
3577
3578         if (addr)
3579                 dev = p2p_get_device(p2p, addr);
3580         else
3581                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3582
3583         if (dev && next) {
3584                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3585                 if (&dev->list == &p2p->devices)
3586                         dev = NULL;
3587         }
3588
3589         if (dev == NULL)
3590                 return NULL;
3591
3592         return &dev->info;
3593 }
3594
3595
3596 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3597                           char *buf, size_t buflen)
3598 {
3599         struct p2p_device *dev;
3600         int res;
3601         char *pos, *end;
3602         struct os_reltime now;
3603
3604         if (info == NULL)
3605                 return -1;
3606
3607         dev = (struct p2p_device *) (((u8 *) info) -
3608                                      offsetof(struct p2p_device, info));
3609
3610         pos = buf;
3611         end = buf + buflen;
3612
3613         os_get_reltime(&now);
3614         res = os_snprintf(pos, end - pos,
3615                           "age=%d\n"
3616                           "listen_freq=%d\n"
3617                           "wps_method=%s\n"
3618                           "interface_addr=" MACSTR "\n"
3619                           "member_in_go_dev=" MACSTR "\n"
3620                           "member_in_go_iface=" MACSTR "\n"
3621                           "go_neg_req_sent=%d\n"
3622                           "go_state=%s\n"
3623                           "dialog_token=%u\n"
3624                           "intended_addr=" MACSTR "\n"
3625                           "country=%c%c\n"
3626                           "oper_freq=%d\n"
3627                           "req_config_methods=0x%x\n"
3628                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3629                           "status=%d\n"
3630                           "invitation_reqs=%u\n",
3631                           (int) (now.sec - dev->last_seen.sec),
3632                           dev->listen_freq,
3633                           p2p_wps_method_text(dev->wps_method),
3634                           MAC2STR(dev->interface_addr),
3635                           MAC2STR(dev->member_in_go_dev),
3636                           MAC2STR(dev->member_in_go_iface),
3637                           dev->go_neg_req_sent,
3638                           p2p_go_state_text(dev->go_state),
3639                           dev->dialog_token,
3640                           MAC2STR(dev->intended_addr),
3641                           dev->country[0] ? dev->country[0] : '_',
3642                           dev->country[1] ? dev->country[1] : '_',
3643                           dev->oper_freq,
3644                           dev->req_config_methods,
3645                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3646                           "[PROBE_REQ_ONLY]" : "",
3647                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3648                           dev->flags & P2P_DEV_NOT_YET_READY ?
3649                           "[NOT_YET_READY]" : "",
3650                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3651                           "[PD_PEER_DISPLAY]" : "",
3652                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3653                           "[PD_PEER_KEYPAD]" : "",
3654                           dev->flags & P2P_DEV_USER_REJECTED ?
3655                           "[USER_REJECTED]" : "",
3656                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3657                           "[PEER_WAITING_RESPONSE]" : "",
3658                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3659                           "[PREFER_PERSISTENT_GROUP]" : "",
3660                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3661                           "[WAIT_GO_NEG_RESPONSE]" : "",
3662                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3663                           "[WAIT_GO_NEG_CONFIRM]" : "",
3664                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3665                           "[GROUP_CLIENT_ONLY]" : "",
3666                           dev->flags & P2P_DEV_FORCE_FREQ ?
3667                           "[FORCE_FREQ]" : "",
3668                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3669                           "[PD_FOR_JOIN]" : "",
3670                           dev->status,
3671                           dev->invitation_reqs);
3672         if (res < 0 || res >= end - pos)
3673                 return pos - buf;
3674         pos += res;
3675
3676         if (dev->ext_listen_period) {
3677                 res = os_snprintf(pos, end - pos,
3678                                   "ext_listen_period=%u\n"
3679                                   "ext_listen_interval=%u\n",
3680                                   dev->ext_listen_period,
3681                                   dev->ext_listen_interval);
3682                 if (res < 0 || res >= end - pos)
3683                         return pos - buf;
3684                 pos += res;
3685         }
3686
3687         if (dev->oper_ssid_len) {
3688                 res = os_snprintf(pos, end - pos,
3689                                   "oper_ssid=%s\n",
3690                                   wpa_ssid_txt(dev->oper_ssid,
3691                                                dev->oper_ssid_len));
3692                 if (res < 0 || res >= end - pos)
3693                         return pos - buf;
3694                 pos += res;
3695         }
3696
3697 #ifdef CONFIG_WIFI_DISPLAY
3698         if (dev->info.wfd_subelems) {
3699                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3700                 if (res < 0 || res >= end - pos)
3701                         return pos - buf;
3702                 pos += res;
3703
3704                 pos += wpa_snprintf_hex(pos, end - pos,
3705                                         wpabuf_head(dev->info.wfd_subelems),
3706                                         wpabuf_len(dev->info.wfd_subelems));
3707
3708                 res = os_snprintf(pos, end - pos, "\n");
3709                 if (res < 0 || res >= end - pos)
3710                         return pos - buf;
3711                 pos += res;
3712         }
3713 #endif /* CONFIG_WIFI_DISPLAY */
3714
3715         return pos - buf;
3716 }
3717
3718
3719 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3720 {
3721         return p2p_get_device(p2p, addr) != NULL;
3722 }
3723
3724
3725 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3726 {
3727         if (enabled) {
3728                 p2p_dbg(p2p, "Client discoverability enabled");
3729                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3730         } else {
3731                 p2p_dbg(p2p, "Client discoverability disabled");
3732                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3733         }
3734 }
3735
3736
3737 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3738                                               u32 duration2, u32 interval2)
3739 {
3740         struct wpabuf *req;
3741         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3742         u8 *len;
3743
3744         req = wpabuf_alloc(100);
3745         if (req == NULL)
3746                 return NULL;
3747
3748         if (duration1 || interval1) {
3749                 os_memset(&desc1, 0, sizeof(desc1));
3750                 desc1.count_type = 1;
3751                 desc1.duration = duration1;
3752                 desc1.interval = interval1;
3753                 ptr1 = &desc1;
3754
3755                 if (duration2 || interval2) {
3756                         os_memset(&desc2, 0, sizeof(desc2));
3757                         desc2.count_type = 2;
3758                         desc2.duration = duration2;
3759                         desc2.interval = interval2;
3760                         ptr2 = &desc2;
3761                 }
3762         }
3763
3764         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3765         len = p2p_buf_add_ie_hdr(req);
3766         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3767         p2p_buf_update_ie_hdr(req, len);
3768
3769         return req;
3770 }
3771
3772
3773 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3774                      const u8 *own_interface_addr, unsigned int freq,
3775                      u32 duration1, u32 interval1, u32 duration2,
3776                      u32 interval2)
3777 {
3778         struct wpabuf *req;
3779
3780         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3781                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3782                 "dur2=%u int2=%u",
3783                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3784                 freq, duration1, interval1, duration2, interval2);
3785
3786         req = p2p_build_presence_req(duration1, interval1, duration2,
3787                                      interval2);
3788         if (req == NULL)
3789                 return -1;
3790
3791         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3792         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3793                             go_interface_addr,
3794                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3795                 p2p_dbg(p2p, "Failed to send Action frame");
3796         }
3797         wpabuf_free(req);
3798
3799         return 0;
3800 }
3801
3802
3803 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3804                                                size_t noa_len, u8 dialog_token)
3805 {
3806         struct wpabuf *resp;
3807         u8 *len;
3808
3809         resp = wpabuf_alloc(100 + noa_len);
3810         if (resp == NULL)
3811                 return NULL;
3812
3813         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3814         len = p2p_buf_add_ie_hdr(resp);
3815         p2p_buf_add_status(resp, status);
3816         if (noa) {
3817                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3818                 wpabuf_put_le16(resp, noa_len);
3819                 wpabuf_put_data(resp, noa, noa_len);
3820         } else
3821                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3822         p2p_buf_update_ie_hdr(resp, len);
3823
3824         return resp;
3825 }
3826
3827
3828 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3829                                      const u8 *sa, const u8 *data, size_t len,
3830                                      int rx_freq)
3831 {
3832         struct p2p_message msg;
3833         u8 status;
3834         struct wpabuf *resp;
3835         size_t g;
3836         struct p2p_group *group = NULL;
3837         int parsed = 0;
3838         u8 noa[50];
3839         int noa_len;
3840
3841         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3842
3843         for (g = 0; g < p2p->num_groups; g++) {
3844                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3845                               ETH_ALEN) == 0) {
3846                         group = p2p->groups[g];
3847                         break;
3848                 }
3849         }
3850         if (group == NULL) {
3851                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3852                         MACSTR, MAC2STR(da));
3853                 return;
3854         }
3855
3856         if (p2p_parse(data, len, &msg) < 0) {
3857                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3858                 status = P2P_SC_FAIL_INVALID_PARAMS;
3859                 goto fail;
3860         }
3861         parsed = 1;
3862
3863         if (msg.noa == NULL) {
3864                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3865                 status = P2P_SC_FAIL_INVALID_PARAMS;
3866                 goto fail;
3867         }
3868
3869         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3870
3871 fail:
3872         if (p2p->cfg->get_noa)
3873                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3874                                             sizeof(noa));
3875         else
3876                 noa_len = -1;
3877         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3878                                        noa_len > 0 ? noa_len : 0,
3879                                        msg.dialog_token);
3880         if (parsed)
3881                 p2p_parse_free(&msg);
3882         if (resp == NULL)
3883                 return;
3884
3885         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3886         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3887                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3888                 p2p_dbg(p2p, "Failed to send Action frame");
3889         }
3890         wpabuf_free(resp);
3891 }
3892
3893
3894 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3895                                       const u8 *sa, const u8 *data, size_t len)
3896 {
3897         struct p2p_message msg;
3898
3899         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3900
3901         if (p2p_parse(data, len, &msg) < 0) {
3902                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3903                 return;
3904         }
3905
3906         if (msg.status == NULL || msg.noa == NULL) {
3907                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3908                 p2p_parse_free(&msg);
3909                 return;
3910         }
3911
3912         if (p2p->cfg->presence_resp) {
3913                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3914                                         msg.noa, msg.noa_len);
3915         }
3916
3917         if (*msg.status) {
3918                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3919                         *msg.status);
3920                 p2p_parse_free(&msg);
3921                 return;
3922         }
3923
3924         p2p_dbg(p2p, "P2P Presence Request was accepted");
3925         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3926                     msg.noa, msg.noa_len);
3927         /* TODO: process NoA */
3928         p2p_parse_free(&msg);
3929 }
3930
3931
3932 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3933 {
3934         struct p2p_data *p2p = eloop_ctx;
3935
3936         if (p2p->ext_listen_interval) {
3937                 /* Schedule next extended listen timeout */
3938                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3939                                        p2p->ext_listen_interval_usec,
3940                                        p2p_ext_listen_timeout, p2p, NULL);
3941         }
3942
3943         if ((p2p->cfg->is_p2p_in_progress &&
3944              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
3945             (p2p->pending_action_state == P2P_PENDING_PD &&
3946              p2p->pd_retries > 0)) {
3947                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
3948                         p2p_state_txt(p2p->state));
3949                 return;
3950         }
3951
3952         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3953                 /*
3954                  * This should not really happen, but it looks like the Listen
3955                  * command may fail is something else (e.g., a scan) was
3956                  * running at an inconvenient time. As a workaround, allow new
3957                  * Extended Listen operation to be started.
3958                  */
3959                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3960                 p2p->ext_listen_only = 0;
3961                 p2p_set_state(p2p, P2P_IDLE);
3962         }
3963
3964         if (p2p->state != P2P_IDLE) {
3965                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3966                 return;
3967         }
3968
3969         p2p_dbg(p2p, "Extended Listen timeout");
3970         p2p->ext_listen_only = 1;
3971         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3972                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3973                 p2p->ext_listen_only = 0;
3974         }
3975 }
3976
3977
3978 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3979                    unsigned int interval)
3980 {
3981         if (period > 65535 || interval > 65535 || period > interval ||
3982             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3983                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3984                         period, interval);
3985                 return -1;
3986         }
3987
3988         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3989
3990         if (interval == 0) {
3991                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3992                 p2p->ext_listen_period = 0;
3993                 p2p->ext_listen_interval = 0;
3994                 return 0;
3995         }
3996
3997         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3998                 period, interval);
3999         p2p->ext_listen_period = period;
4000         p2p->ext_listen_interval = interval;
4001         p2p->ext_listen_interval_sec = interval / 1000;
4002         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4003
4004         eloop_register_timeout(p2p->ext_listen_interval_sec,
4005                                p2p->ext_listen_interval_usec,
4006                                p2p_ext_listen_timeout, p2p, NULL);
4007
4008         return 0;
4009 }
4010
4011
4012 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4013                       const u8 *ie, size_t ie_len)
4014 {
4015         struct p2p_message msg;
4016
4017         if (bssid == NULL || ie == NULL)
4018                 return;
4019
4020         os_memset(&msg, 0, sizeof(msg));
4021         if (p2p_parse_ies(ie, ie_len, &msg))
4022                 return;
4023         if (msg.minor_reason_code == NULL) {
4024                 p2p_parse_free(&msg);
4025                 return;
4026         }
4027
4028         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4029                 " reason_code=%u minor_reason_code=%u",
4030                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4031
4032         p2p_parse_free(&msg);
4033 }
4034
4035
4036 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4037                         const u8 *ie, size_t ie_len)
4038 {
4039         struct p2p_message msg;
4040
4041         if (bssid == NULL || ie == NULL)
4042                 return;
4043
4044         os_memset(&msg, 0, sizeof(msg));
4045         if (p2p_parse_ies(ie, ie_len, &msg))
4046                 return;
4047         if (msg.minor_reason_code == NULL) {
4048                 p2p_parse_free(&msg);
4049                 return;
4050         }
4051
4052         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4053                 " reason_code=%u minor_reason_code=%u",
4054                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4055
4056         p2p_parse_free(&msg);
4057 }
4058
4059
4060 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4061 {
4062         if (enabled) {
4063                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4064                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4065         } else {
4066                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4067                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4068         }
4069 }
4070
4071
4072 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4073                            u8 forced)
4074 {
4075         if (p2p_channel_to_freq(reg_class, channel) < 0)
4076                 return -1;
4077
4078         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4079                 reg_class, channel);
4080
4081         /*
4082          * Listen channel was set in configuration or set by control interface;
4083          * cannot override it.
4084          */
4085         if (p2p->cfg->channel_forced && forced == 0)
4086                 return -1;
4087
4088         if (p2p->state == P2P_IDLE) {
4089                 p2p->cfg->reg_class = reg_class;
4090                 p2p->cfg->channel = channel;
4091                 p2p->cfg->channel_forced = forced;
4092         } else {
4093                 p2p_dbg(p2p, "Defer setting listen channel");
4094                 p2p->pending_reg_class = reg_class;
4095                 p2p->pending_channel = channel;
4096                 p2p->pending_channel_forced = forced;
4097         }
4098
4099         return 0;
4100 }
4101
4102
4103 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4104 {
4105         return p2p->cfg->channel;
4106 }
4107
4108
4109 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4110 {
4111         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4112         if (postfix == NULL) {
4113                 p2p->cfg->ssid_postfix_len = 0;
4114                 return 0;
4115         }
4116         if (len > sizeof(p2p->cfg->ssid_postfix))
4117                 return -1;
4118         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4119         p2p->cfg->ssid_postfix_len = len;
4120         return 0;
4121 }
4122
4123
4124 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4125                          int cfg_op_channel)
4126 {
4127         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4128                 return -1;
4129
4130         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4131                 op_reg_class, op_channel);
4132         p2p->cfg->op_reg_class = op_reg_class;
4133         p2p->cfg->op_channel = op_channel;
4134         p2p->cfg->cfg_op_channel = cfg_op_channel;
4135         return 0;
4136 }
4137
4138
4139 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4140                       const struct p2p_channel *pref_chan)
4141 {
4142         struct p2p_channel *n;
4143
4144         if (pref_chan) {
4145                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4146                 if (n == NULL)
4147                         return -1;
4148                 os_memcpy(n, pref_chan,
4149                           num_pref_chan * sizeof(struct p2p_channel));
4150         } else
4151                 n = NULL;
4152
4153         os_free(p2p->cfg->pref_chan);
4154         p2p->cfg->pref_chan = n;
4155         p2p->cfg->num_pref_chan = num_pref_chan;
4156
4157         return 0;
4158 }
4159
4160
4161 int p2p_set_no_go_freq(struct p2p_data *p2p,
4162                        const struct wpa_freq_range_list *list)
4163 {
4164         struct wpa_freq_range *tmp;
4165
4166         if (list == NULL || list->num == 0) {
4167                 os_free(p2p->no_go_freq.range);
4168                 p2p->no_go_freq.range = NULL;
4169                 p2p->no_go_freq.num = 0;
4170                 return 0;
4171         }
4172
4173         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4174         if (tmp == NULL)
4175                 return -1;
4176         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4177         os_free(p2p->no_go_freq.range);
4178         p2p->no_go_freq.range = tmp;
4179         p2p->no_go_freq.num = list->num;
4180         p2p_dbg(p2p, "Updated no GO chan list");
4181
4182         return 0;
4183 }
4184
4185
4186 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4187                            u8 *iface_addr)
4188 {
4189         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4190         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4191                 return -1;
4192         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4193         return 0;
4194 }
4195
4196
4197 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4198                            u8 *dev_addr)
4199 {
4200         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4201         if (dev == NULL)
4202                 return -1;
4203         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4204         return 0;
4205 }
4206
4207
4208 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4209 {
4210         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4211         if (is_zero_ether_addr(p2p->peer_filter))
4212                 p2p_dbg(p2p, "Disable peer filter");
4213         else
4214                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4215                         MAC2STR(p2p->peer_filter));
4216 }
4217
4218
4219 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4220 {
4221         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4222         if (p2p->cross_connect == enabled)
4223                 return;
4224         p2p->cross_connect = enabled;
4225         /* TODO: may need to tear down any action group where we are GO(?) */
4226 }
4227
4228
4229 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4230 {
4231         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4232         if (dev == NULL)
4233                 return -1;
4234         if (dev->oper_freq <= 0)
4235                 return -1;
4236         return dev->oper_freq;
4237 }
4238
4239
4240 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4241 {
4242         p2p_dbg(p2p, "Intra BSS distribution %s",
4243                 enabled ? "enabled" : "disabled");
4244         p2p->cfg->p2p_intra_bss = enabled;
4245 }
4246
4247
4248 void p2p_update_channel_list(struct p2p_data *p2p,
4249                              const struct p2p_channels *chan,
4250                              const struct p2p_channels *cli_chan)
4251 {
4252         p2p_dbg(p2p, "Update channel list");
4253         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4254         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4255         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4256                   sizeof(struct p2p_channels));
4257         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4258 }
4259
4260
4261 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4262                     const u8 *src, const u8 *bssid, const u8 *buf,
4263                     size_t len, unsigned int wait_time)
4264 {
4265         if (p2p->p2p_scan_running) {
4266                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4267                 if (p2p->after_scan_tx) {
4268                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4269                         os_free(p2p->after_scan_tx);
4270                 }
4271                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4272                                                len);
4273                 if (p2p->after_scan_tx == NULL)
4274                         return -1;
4275                 p2p->after_scan_tx->freq = freq;
4276                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4277                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4278                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4279                 p2p->after_scan_tx->len = len;
4280                 p2p->after_scan_tx->wait_time = wait_time;
4281                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4282                 return 0;
4283         }
4284
4285         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4286                                      buf, len, wait_time);
4287 }
4288
4289
4290 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4291                            int freq_overall)
4292 {
4293         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4294                 freq_24, freq_5, freq_overall);
4295         p2p->best_freq_24 = freq_24;
4296         p2p->best_freq_5 = freq_5;
4297         p2p->best_freq_overall = freq_overall;
4298 }
4299
4300
4301 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4302 {
4303         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4304         p2p->own_freq_preference = freq;
4305 }
4306
4307
4308 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4309 {
4310         if (p2p == NULL || p2p->go_neg_peer == NULL)
4311                 return NULL;
4312         return p2p->go_neg_peer->info.p2p_device_addr;
4313 }
4314
4315
4316 const struct p2p_peer_info *
4317 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4318 {
4319         struct p2p_device *dev;
4320
4321         if (addr) {
4322                 dev = p2p_get_device(p2p, addr);
4323                 if (!dev)
4324                         return NULL;
4325
4326                 if (!next) {
4327                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4328                                 return NULL;
4329
4330                         return &dev->info;
4331                 } else {
4332                         do {
4333                                 dev = dl_list_first(&dev->list,
4334                                                     struct p2p_device,
4335                                                     list);
4336                                 if (!dev || &dev->list == &p2p->devices)
4337                                         return NULL;
4338                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4339                 }
4340         } else {
4341                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4342                 if (!dev)
4343                         return NULL;
4344                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4345                         dev = dl_list_first(&dev->list,
4346                                             struct p2p_device,
4347                                             list);
4348                         if (!dev || &dev->list == &p2p->devices)
4349                                 return NULL;
4350                 }
4351         }
4352
4353         return &dev->info;
4354 }
4355
4356
4357 int p2p_in_progress(struct p2p_data *p2p)
4358 {
4359         if (p2p == NULL)
4360                 return 0;
4361         if (p2p->state == P2P_SEARCH)
4362                 return 2;
4363         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4364 }
4365
4366
4367 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4368                             u8 client_timeout)
4369 {
4370         if (p2p) {
4371                 p2p->go_timeout = go_timeout;
4372                 p2p->client_timeout = client_timeout;
4373         }
4374 }
4375
4376
4377 #ifdef CONFIG_WIFI_DISPLAY
4378
4379 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4380 {
4381         size_t g;
4382         struct p2p_group *group;
4383
4384         for (g = 0; g < p2p->num_groups; g++) {
4385                 group = p2p->groups[g];
4386                 p2p_group_force_beacon_update_ies(group);
4387         }
4388 }
4389
4390
4391 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4392 {
4393         wpabuf_free(p2p->wfd_ie_beacon);
4394         p2p->wfd_ie_beacon = ie;
4395         p2p_update_wfd_ie_groups(p2p);
4396         return 0;
4397 }
4398
4399
4400 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4401 {
4402         wpabuf_free(p2p->wfd_ie_probe_req);
4403         p2p->wfd_ie_probe_req = ie;
4404         return 0;
4405 }
4406
4407
4408 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4409 {
4410         wpabuf_free(p2p->wfd_ie_probe_resp);
4411         p2p->wfd_ie_probe_resp = ie;
4412         p2p_update_wfd_ie_groups(p2p);
4413         return 0;
4414 }
4415
4416
4417 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4418 {
4419         wpabuf_free(p2p->wfd_ie_assoc_req);
4420         p2p->wfd_ie_assoc_req = ie;
4421         return 0;
4422 }
4423
4424
4425 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4426 {
4427         wpabuf_free(p2p->wfd_ie_invitation);
4428         p2p->wfd_ie_invitation = ie;
4429         return 0;
4430 }
4431
4432
4433 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4434 {
4435         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4436         p2p->wfd_ie_prov_disc_req = ie;
4437         return 0;
4438 }
4439
4440
4441 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4442 {
4443         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4444         p2p->wfd_ie_prov_disc_resp = ie;
4445         return 0;
4446 }
4447
4448
4449 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4450 {
4451         wpabuf_free(p2p->wfd_ie_go_neg);
4452         p2p->wfd_ie_go_neg = ie;
4453         return 0;
4454 }
4455
4456
4457 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4458 {
4459         wpabuf_free(p2p->wfd_dev_info);
4460         if (elem) {
4461                 p2p->wfd_dev_info = wpabuf_dup(elem);
4462                 if (p2p->wfd_dev_info == NULL)
4463                         return -1;
4464         } else
4465                 p2p->wfd_dev_info = NULL;
4466
4467         return 0;
4468 }
4469
4470
4471 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4472 {
4473         wpabuf_free(p2p->wfd_assoc_bssid);
4474         if (elem) {
4475                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4476                 if (p2p->wfd_assoc_bssid == NULL)
4477                         return -1;
4478         } else
4479                 p2p->wfd_assoc_bssid = NULL;
4480
4481         return 0;
4482 }
4483
4484
4485 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4486                                   const struct wpabuf *elem)
4487 {
4488         wpabuf_free(p2p->wfd_coupled_sink_info);
4489         if (elem) {
4490                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4491                 if (p2p->wfd_coupled_sink_info == NULL)
4492                         return -1;
4493         } else
4494                 p2p->wfd_coupled_sink_info = NULL;
4495
4496         return 0;
4497 }
4498
4499 #endif /* CONFIG_WIFI_DISPLAY */
4500
4501
4502 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4503                      int max_disc_tu)
4504 {
4505         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4506                 return -1;
4507
4508         p2p->min_disc_int = min_disc_int;
4509         p2p->max_disc_int = max_disc_int;
4510         p2p->max_disc_tu = max_disc_tu;
4511         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4512                 min_disc_int, max_disc_int, max_disc_tu);
4513
4514         return 0;
4515 }
4516
4517
4518 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4519 {
4520         va_list ap;
4521         char buf[500];
4522
4523         if (!p2p->cfg->debug_print)
4524                 return;
4525
4526         va_start(ap, fmt);
4527         vsnprintf(buf, sizeof(buf), fmt, ap);
4528         buf[sizeof(buf) - 1] = '\0';
4529         va_end(ap);
4530         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4531 }
4532
4533
4534 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4535 {
4536         va_list ap;
4537         char buf[500];
4538
4539         if (!p2p->cfg->debug_print)
4540                 return;
4541
4542         va_start(ap, fmt);
4543         vsnprintf(buf, sizeof(buf), fmt, ap);
4544         buf[sizeof(buf) - 1] = '\0';
4545         va_end(ap);
4546         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4547 }
4548
4549
4550 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4551 {
4552         va_list ap;
4553         char buf[500];
4554
4555         if (!p2p->cfg->debug_print)
4556                 return;
4557
4558         va_start(ap, fmt);
4559         vsnprintf(buf, sizeof(buf), fmt, ap);
4560         buf[sizeof(buf) - 1] = '\0';
4561         va_end(ap);
4562         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4563 }
4564
4565
4566 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4567                              void (*peer_callback)(struct p2p_peer_info *peer,
4568                                                    void *user_data),
4569                              void *user_data)
4570 {
4571         struct p2p_device *dev, *n;
4572
4573         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4574                 peer_callback(&dev->info, user_data);
4575         }
4576 }
4577
4578
4579 #ifdef CONFIG_WPS_NFC
4580
4581 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4582                                               int client_freq,
4583                                               const u8 *go_dev_addr,
4584                                               const u8 *ssid, size_t ssid_len)
4585 {
4586         struct wpabuf *buf;
4587         u8 op_class, channel;
4588         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4589
4590         buf = wpabuf_alloc(1000);
4591         if (buf == NULL)
4592                 return NULL;
4593
4594         op_class = p2p->cfg->reg_class;
4595         channel = p2p->cfg->channel;
4596
4597         p2p_buf_add_capability(buf, p2p->dev_capab &
4598                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4599         p2p_buf_add_device_info(buf, p2p, NULL);
4600
4601         if (p2p->num_groups > 0) {
4602                 int freq = p2p_group_get_freq(p2p->groups[0]);
4603                 role = P2P_GO_IN_A_GROUP;
4604                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4605                         p2p_dbg(p2p,
4606                                 "Unknown GO operating frequency %d MHz for NFC handover",
4607                                 freq);
4608                         wpabuf_free(buf);
4609                         return NULL;
4610                 }
4611         } else if (client_freq > 0) {
4612                 role = P2P_CLIENT_IN_A_GROUP;
4613                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4614                         p2p_dbg(p2p,
4615                                 "Unknown client operating frequency %d MHz for NFC handover",
4616                                 client_freq);
4617                         wpabuf_free(buf);
4618                         return NULL;
4619                 }
4620         }
4621
4622         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4623                                        channel, role);
4624
4625         if (p2p->num_groups > 0) {
4626                 /* Limit number of clients to avoid very long message */
4627                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4628                 p2p_group_buf_add_id(p2p->groups[0], buf);
4629         } else if (client_freq > 0 &&
4630                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4631                    ssid && ssid_len > 0) {
4632                 /*
4633                  * Add the optional P2P Group ID to indicate in which group this
4634                  * device is a P2P Client.
4635                  */
4636                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4637         }
4638
4639         return buf;
4640 }
4641
4642
4643 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4644                                            int client_freq,
4645                                            const u8 *go_dev_addr,
4646                                            const u8 *ssid, size_t ssid_len)
4647 {
4648         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4649                                       ssid_len);
4650 }
4651
4652
4653 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4654                                            int client_freq,
4655                                            const u8 *go_dev_addr,
4656                                            const u8 *ssid, size_t ssid_len)
4657 {
4658         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4659                                       ssid_len);
4660 }
4661
4662
4663 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4664                                         struct p2p_nfc_params *params)
4665 {
4666         struct p2p_message msg;
4667         struct p2p_device *dev;
4668         const u8 *p2p_dev_addr;
4669         int freq;
4670         enum p2p_role_indication role;
4671
4672         params->next_step = NO_ACTION;
4673
4674         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4675                                    params->p2p_attr, params->p2p_len, &msg)) {
4676                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4677                 p2p_parse_free(&msg);
4678                 return -1;
4679         }
4680
4681         if (msg.p2p_device_addr)
4682                 p2p_dev_addr = msg.p2p_device_addr;
4683         else if (msg.device_id)
4684                 p2p_dev_addr = msg.device_id;
4685         else {
4686                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4687                 p2p_parse_free(&msg);
4688                 return -1;
4689         }
4690
4691         if (msg.oob_dev_password) {
4692                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4693                           msg.oob_dev_password_len);
4694                 params->oob_dev_pw_len = msg.oob_dev_password_len;
4695         }
4696
4697         dev = p2p_create_device(p2p, p2p_dev_addr);
4698         if (dev == NULL) {
4699                 p2p_parse_free(&msg);
4700                 return -1;
4701         }
4702
4703         params->peer = &dev->info;
4704
4705         os_get_reltime(&dev->last_seen);
4706         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4707         p2p_copy_wps_info(p2p, dev, 0, &msg);
4708
4709         if (!msg.oob_go_neg_channel) {
4710                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4711                 return -1;
4712         }
4713
4714         if (msg.oob_go_neg_channel[3] == 0 &&
4715             msg.oob_go_neg_channel[4] == 0)
4716                 freq = 0;
4717         else
4718                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4719                                            msg.oob_go_neg_channel[4]);
4720         if (freq < 0) {
4721                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4722                 return -1;
4723         }
4724         role = msg.oob_go_neg_channel[5];
4725
4726         if (role == P2P_GO_IN_A_GROUP) {
4727                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4728                 params->go_freq = freq;
4729         } else if (role == P2P_CLIENT_IN_A_GROUP) {
4730                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4731                         freq);
4732                 params->go_freq = freq;
4733         } else
4734                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4735         dev->oob_go_neg_freq = freq;
4736
4737         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4738                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4739                                            p2p->cfg->channel);
4740                 if (freq < 0) {
4741                         p2p_dbg(p2p, "Own listen channel not known");
4742                         return -1;
4743                 }
4744                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4745                 dev->oob_go_neg_freq = freq;
4746         }
4747
4748         if (msg.group_id) {
4749                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4750                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4751                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4752                           params->go_ssid_len);
4753         }
4754
4755         if (dev->flags & P2P_DEV_USER_REJECTED) {
4756                 p2p_dbg(p2p, "Do not report rejected device");
4757                 p2p_parse_free(&msg);
4758                 return 0;
4759         }
4760
4761         if (!(dev->flags & P2P_DEV_REPORTED)) {
4762                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4763                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
4764                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4765         }
4766         p2p_parse_free(&msg);
4767
4768         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4769                 params->next_step = BOTH_GO;
4770         else if (role == P2P_GO_IN_A_GROUP)
4771                 params->next_step = JOIN_GROUP;
4772         else if (role == P2P_CLIENT_IN_A_GROUP) {
4773                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4774                 params->next_step = PEER_CLIENT;
4775         } else if (p2p->num_groups > 0)
4776                 params->next_step = AUTH_JOIN;
4777         else if (params->sel)
4778                 params->next_step = INIT_GO_NEG;
4779         else
4780                 params->next_step = RESP_GO_NEG;
4781
4782         return 0;
4783 }
4784
4785
4786 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4787                                       int go_intent,
4788                                       const u8 *own_interface_addr)
4789 {
4790
4791         p2p->authorized_oob_dev_pw_id = dev_pw_id;
4792         if (dev_pw_id == 0) {
4793                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4794                 return;
4795         }
4796
4797         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4798                 dev_pw_id);
4799
4800         p2p->go_intent = go_intent;
4801         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4802 }
4803
4804 #endif /* CONFIG_WPS_NFC */
4805
4806
4807 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4808 {
4809         if (len < 8 || len > 63)
4810                 return -1;
4811         p2p->cfg->passphrase_len = len;
4812         return 0;
4813 }
4814
4815
4816 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4817 {
4818         p2p->vendor_elem = vendor_elem;
4819 }