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         if (p2p->pending_listen_freq) {
1829                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1830                 p2p->pending_listen_freq = 0;
1831         }
1832         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1833         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1834         p2p_connect_send(p2p, p2p->go_neg_peer);
1835 }
1836
1837
1838 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1839 {
1840         struct p2p_data *p2p = eloop_ctx;
1841         if (p2p->invite_peer == NULL)
1842                 return;
1843         if (p2p->pending_listen_freq) {
1844                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1845                 p2p->pending_listen_freq = 0;
1846         }
1847         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1848         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1849                         p2p->invite_dev_pw_id);
1850 }
1851
1852
1853 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1854                                        const u8 *ie, size_t ie_len)
1855 {
1856         struct p2p_message msg;
1857         struct p2p_device *dev;
1858
1859         os_memset(&msg, 0, sizeof(msg));
1860         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1861         {
1862                 p2p_parse_free(&msg);
1863                 return; /* not a P2P probe */
1864         }
1865
1866         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1867             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1868             != 0) {
1869                 /* The Probe Request is not part of P2P Device Discovery. It is
1870                  * not known whether the source address of the frame is the P2P
1871                  * Device Address or P2P Interface Address. Do not add a new
1872                  * peer entry based on this frames.
1873                  */
1874                 p2p_parse_free(&msg);
1875                 return;
1876         }
1877
1878         dev = p2p_get_device(p2p, addr);
1879         if (dev) {
1880                 if (dev->country[0] == 0 && msg.listen_channel)
1881                         os_memcpy(dev->country, msg.listen_channel, 3);
1882                 os_get_reltime(&dev->last_seen);
1883                 p2p_parse_free(&msg);
1884                 return; /* already known */
1885         }
1886
1887         dev = p2p_create_device(p2p, addr);
1888         if (dev == NULL) {
1889                 p2p_parse_free(&msg);
1890                 return;
1891         }
1892
1893         os_get_reltime(&dev->last_seen);
1894         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1895
1896         if (msg.listen_channel) {
1897                 os_memcpy(dev->country, msg.listen_channel, 3);
1898                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1899                                                        msg.listen_channel[4]);
1900         }
1901
1902         p2p_copy_wps_info(p2p, dev, 1, &msg);
1903
1904         if (msg.wfd_subelems) {
1905                 wpabuf_free(dev->info.wfd_subelems);
1906                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1907         }
1908
1909         p2p_parse_free(&msg);
1910
1911         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1912                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1913                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1914                 dev->info.group_capab, dev->info.device_name,
1915                 dev->listen_freq);
1916 }
1917
1918
1919 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1920                                                 const u8 *addr,
1921                                                 struct p2p_message *msg)
1922 {
1923         struct p2p_device *dev;
1924
1925         dev = p2p_get_device(p2p, addr);
1926         if (dev) {
1927                 os_get_reltime(&dev->last_seen);
1928                 return dev; /* already known */
1929         }
1930
1931         dev = p2p_create_device(p2p, addr);
1932         if (dev == NULL)
1933                 return NULL;
1934
1935         p2p_add_dev_info(p2p, addr, dev, msg);
1936
1937         return dev;
1938 }
1939
1940
1941 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1942 {
1943         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1944                 return 1;
1945         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1946             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1947             WPA_GET_BE16(&req_dev_type[6]) == 0)
1948                 return 1; /* Category match with wildcard OUI/sub-category */
1949         return 0;
1950 }
1951
1952
1953 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1954                         size_t num_req_dev_type)
1955 {
1956         size_t i;
1957         for (i = 0; i < num_req_dev_type; i++) {
1958                 if (dev_type_match(dev_type, req_dev_type[i]))
1959                         return 1;
1960         }
1961         return 0;
1962 }
1963
1964
1965 /**
1966  * p2p_match_dev_type - Match local device type with requested type
1967  * @p2p: P2P module context from p2p_init()
1968  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1969  * Returns: 1 on match, 0 on mismatch
1970  *
1971  * This function can be used to match the Requested Device Type attribute in
1972  * WPS IE with the local device types for deciding whether to reply to a Probe
1973  * Request frame.
1974  */
1975 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1976 {
1977         struct wps_parse_attr attr;
1978         size_t i;
1979
1980         if (wps_parse_msg(wps, &attr))
1981                 return 1; /* assume no Requested Device Type attributes */
1982
1983         if (attr.num_req_dev_type == 0)
1984                 return 1; /* no Requested Device Type attributes -> match */
1985
1986         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1987                                 attr.num_req_dev_type))
1988                 return 1; /* Own Primary Device Type matches */
1989
1990         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1991                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1992                                         attr.req_dev_type,
1993                                         attr.num_req_dev_type))
1994                 return 1; /* Own Secondary Device Type matches */
1995
1996         /* No matching device type found */
1997         return 0;
1998 }
1999
2000
2001 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2002 {
2003         struct wpabuf *buf;
2004         u8 *len;
2005         int pw_id = -1;
2006         size_t extra = 0;
2007
2008 #ifdef CONFIG_WIFI_DISPLAY
2009         if (p2p->wfd_ie_probe_resp)
2010                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2011 #endif /* CONFIG_WIFI_DISPLAY */
2012
2013         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2014                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2015
2016         buf = wpabuf_alloc(1000 + extra);
2017         if (buf == NULL)
2018                 return NULL;
2019
2020         if (p2p->go_neg_peer) {
2021                 /* Advertise immediate availability of WPS credential */
2022                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2023         }
2024
2025         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2026                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2027                 wpabuf_free(buf);
2028                 return NULL;
2029         }
2030
2031 #ifdef CONFIG_WIFI_DISPLAY
2032         if (p2p->wfd_ie_probe_resp)
2033                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2034 #endif /* CONFIG_WIFI_DISPLAY */
2035
2036         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2037                 wpabuf_put_buf(buf,
2038                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2039
2040         /* P2P IE */
2041         len = p2p_buf_add_ie_hdr(buf);
2042         p2p_buf_add_capability(buf, p2p->dev_capab &
2043                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2044         if (p2p->ext_listen_interval)
2045                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2046                                               p2p->ext_listen_interval);
2047         p2p_buf_add_device_info(buf, p2p, NULL);
2048         p2p_buf_update_ie_hdr(buf, len);
2049
2050         return buf;
2051 }
2052
2053
2054 static enum p2p_probe_req_status
2055 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2056                 const u8 *bssid, const u8 *ie, size_t ie_len)
2057 {
2058         struct ieee802_11_elems elems;
2059         struct wpabuf *buf;
2060         struct ieee80211_mgmt *resp;
2061         struct p2p_message msg;
2062         struct wpabuf *ies;
2063
2064         if (!p2p->in_listen || !p2p->drv_in_listen) {
2065                 /* not in Listen state - ignore Probe Request */
2066                 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2067                         p2p->in_listen, p2p->drv_in_listen);
2068                 return P2P_PREQ_NOT_LISTEN;
2069         }
2070
2071         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2072             ParseFailed) {
2073                 /* Ignore invalid Probe Request frames */
2074                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2075                 return P2P_PREQ_MALFORMED;
2076         }
2077
2078         if (elems.p2p == NULL) {
2079                 /* not a P2P probe - ignore it */
2080                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2081                 return P2P_PREQ_NOT_P2P;
2082         }
2083
2084         if (dst && !is_broadcast_ether_addr(dst) &&
2085             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2086                 /* Not sent to the broadcast address or our P2P Device Address
2087                  */
2088                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2089                         MAC2STR(dst));
2090                 return P2P_PREQ_NOT_PROCESSED;
2091         }
2092
2093         if (bssid && !is_broadcast_ether_addr(bssid)) {
2094                 /* Not sent to the Wildcard BSSID */
2095                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2096                         MAC2STR(bssid));
2097                 return P2P_PREQ_NOT_PROCESSED;
2098         }
2099
2100         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2101             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2102             0) {
2103                 /* not using P2P Wildcard SSID - ignore */
2104                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2105                 return P2P_PREQ_NOT_PROCESSED;
2106         }
2107
2108         if (supp_rates_11b_only(&elems)) {
2109                 /* Indicates support for 11b rates only */
2110                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2111                 return P2P_PREQ_NOT_P2P;
2112         }
2113
2114         os_memset(&msg, 0, sizeof(msg));
2115         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2116                 /* Could not parse P2P attributes */
2117                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2118                 return P2P_PREQ_NOT_P2P;
2119         }
2120
2121         if (msg.device_id &&
2122             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2123                 /* Device ID did not match */
2124                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2125                         MAC2STR(msg.device_id));
2126                 p2p_parse_free(&msg);
2127                 return P2P_PREQ_NOT_PROCESSED;
2128         }
2129
2130         /* Check Requested Device Type match */
2131         if (msg.wps_attributes &&
2132             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2133                 /* No match with Requested Device Type */
2134                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2135                 p2p_parse_free(&msg);
2136                 return P2P_PREQ_NOT_PROCESSED;
2137         }
2138         p2p_parse_free(&msg);
2139
2140         if (!p2p->cfg->send_probe_resp) {
2141                 /* Response generated elsewhere */
2142                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2143                 return P2P_PREQ_NOT_PROCESSED;
2144         }
2145
2146         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2147
2148         /*
2149          * We do not really have a specific BSS that this frame is advertising,
2150          * so build a frame that has some information in valid format. This is
2151          * really only used for discovery purposes, not to learn exact BSS
2152          * parameters.
2153          */
2154         ies = p2p_build_probe_resp_ies(p2p);
2155         if (ies == NULL)
2156                 return P2P_PREQ_NOT_PROCESSED;
2157
2158         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2159         if (buf == NULL) {
2160                 wpabuf_free(ies);
2161                 return P2P_PREQ_NOT_PROCESSED;
2162         }
2163
2164         resp = NULL;
2165         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2166
2167         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2168                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2169         os_memcpy(resp->da, addr, ETH_ALEN);
2170         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2171         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2172         resp->u.probe_resp.beacon_int = host_to_le16(100);
2173         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2174         resp->u.probe_resp.capab_info =
2175                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2176                              WLAN_CAPABILITY_PRIVACY |
2177                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2178
2179         wpabuf_put_u8(buf, WLAN_EID_SSID);
2180         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2181         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2182
2183         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2184         wpabuf_put_u8(buf, 8);
2185         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2186         wpabuf_put_u8(buf, 90 / 5);
2187         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2188         wpabuf_put_u8(buf, 180 / 5);
2189         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2190         wpabuf_put_u8(buf, 360 / 5);
2191         wpabuf_put_u8(buf, 480 / 5);
2192         wpabuf_put_u8(buf, 540 / 5);
2193
2194         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2195         wpabuf_put_u8(buf, 1);
2196         wpabuf_put_u8(buf, p2p->cfg->channel);
2197
2198         wpabuf_put_buf(buf, ies);
2199         wpabuf_free(ies);
2200
2201         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2202
2203         wpabuf_free(buf);
2204
2205         return P2P_PREQ_NOT_PROCESSED;
2206 }
2207
2208
2209 enum p2p_probe_req_status
2210 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2211                  const u8 *bssid, const u8 *ie, size_t ie_len)
2212 {
2213         enum p2p_probe_req_status res;
2214
2215         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2216
2217         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2218
2219         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2220             p2p->go_neg_peer &&
2221             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2222             == 0 &&
2223             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2224                 /* Received a Probe Request from GO Negotiation peer */
2225                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2226                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2227                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2228                 return P2P_PREQ_PROCESSED;
2229         }
2230
2231         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2232             p2p->invite_peer &&
2233             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2234             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2235             == 0) {
2236                 /* Received a Probe Request from Invite peer */
2237                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2238                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2239                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2240                 return P2P_PREQ_PROCESSED;
2241         }
2242
2243         return res;
2244 }
2245
2246
2247 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2248                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2249 {
2250         struct wpabuf *tmp;
2251         u8 *lpos;
2252         size_t tmplen;
2253         int res;
2254         u8 group_capab;
2255
2256         if (p2p_ie == NULL)
2257                 return 0; /* WLAN AP is not a P2P manager */
2258
2259         /*
2260          * (Re)Association Request - P2P IE
2261          * P2P Capability attribute (shall be present)
2262          * P2P Interface attribute (present if concurrent device and
2263          *      P2P Management is enabled)
2264          */
2265         tmp = wpabuf_alloc(200);
2266         if (tmp == NULL)
2267                 return -1;
2268
2269         lpos = p2p_buf_add_ie_hdr(tmp);
2270         group_capab = 0;
2271         if (p2p->num_groups > 0) {
2272                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2273                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2274                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2275                     p2p->cross_connect)
2276                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2277         }
2278         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2279         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2280             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2281                 p2p_buf_add_p2p_interface(tmp, p2p);
2282         p2p_buf_update_ie_hdr(tmp, lpos);
2283
2284         tmplen = wpabuf_len(tmp);
2285         if (tmplen > len)
2286                 res = -1;
2287         else {
2288                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2289                 res = tmplen;
2290         }
2291         wpabuf_free(tmp);
2292
2293         return res;
2294 }
2295
2296
2297 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2298                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2299 {
2300         struct wpabuf *tmp;
2301         u8 *lpos;
2302         struct p2p_device *peer;
2303         size_t tmplen;
2304         int res;
2305         size_t extra = 0;
2306
2307         if (!p2p_group)
2308                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2309
2310 #ifdef CONFIG_WIFI_DISPLAY
2311         if (p2p->wfd_ie_assoc_req)
2312                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2313 #endif /* CONFIG_WIFI_DISPLAY */
2314
2315         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2316                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2317
2318         /*
2319          * (Re)Association Request - P2P IE
2320          * P2P Capability attribute (shall be present)
2321          * Extended Listen Timing (may be present)
2322          * P2P Device Info attribute (shall be present)
2323          */
2324         tmp = wpabuf_alloc(200 + extra);
2325         if (tmp == NULL)
2326                 return -1;
2327
2328 #ifdef CONFIG_WIFI_DISPLAY
2329         if (p2p->wfd_ie_assoc_req)
2330                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2331 #endif /* CONFIG_WIFI_DISPLAY */
2332
2333         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2334                 wpabuf_put_buf(tmp,
2335                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2336
2337         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2338
2339         lpos = p2p_buf_add_ie_hdr(tmp);
2340         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2341         if (p2p->ext_listen_interval)
2342                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2343                                               p2p->ext_listen_interval);
2344         p2p_buf_add_device_info(tmp, p2p, peer);
2345         p2p_buf_update_ie_hdr(tmp, lpos);
2346
2347         tmplen = wpabuf_len(tmp);
2348         if (tmplen > len)
2349                 res = -1;
2350         else {
2351                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2352                 res = tmplen;
2353         }
2354         wpabuf_free(tmp);
2355
2356         return res;
2357 }
2358
2359
2360 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2361 {
2362         struct wpabuf *p2p_ie;
2363         int ret;
2364
2365         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2366         if (p2p_ie == NULL)
2367                 return 0;
2368
2369         ret = p2p_attr_text(p2p_ie, buf, end);
2370         wpabuf_free(p2p_ie);
2371         return ret;
2372 }
2373
2374
2375 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2376 {
2377         struct p2p_message msg;
2378
2379         os_memset(&msg, 0, sizeof(msg));
2380         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2381                 return -1;
2382
2383         if (msg.p2p_device_addr) {
2384                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2385                 return 0;
2386         } else if (msg.device_id) {
2387                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2388                 return 0;
2389         }
2390         return -1;
2391 }
2392
2393
2394 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2395 {
2396         struct wpabuf *p2p_ie;
2397         int ret;
2398
2399         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2400                                              P2P_IE_VENDOR_TYPE);
2401         if (p2p_ie == NULL)
2402                 return -1;
2403         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2404         wpabuf_free(p2p_ie);
2405         return ret;
2406 }
2407
2408
2409 static void p2p_clear_go_neg(struct p2p_data *p2p)
2410 {
2411         p2p->go_neg_peer = NULL;
2412         p2p_clear_timeout(p2p);
2413         p2p_set_state(p2p, P2P_IDLE);
2414 }
2415
2416
2417 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2418 {
2419         if (p2p->go_neg_peer == NULL) {
2420                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2421                 return; /* No pending Group Formation */
2422         }
2423
2424         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2425             0) {
2426                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2427                         MACSTR " (GO Negotiation peer " MACSTR ")",
2428                         MAC2STR(mac_addr),
2429                         MAC2STR(p2p->go_neg_peer->intended_addr));
2430                 return; /* Ignore unexpected peer address */
2431         }
2432
2433         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2434                 MAC2STR(mac_addr));
2435
2436         p2p_clear_go_neg(p2p);
2437 }
2438
2439
2440 void p2p_group_formation_failed(struct p2p_data *p2p)
2441 {
2442         if (p2p->go_neg_peer == NULL) {
2443                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2444                 return; /* No pending Group Formation */
2445         }
2446
2447         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2448                 MAC2STR(p2p->go_neg_peer->intended_addr));
2449
2450         p2p_clear_go_neg(p2p);
2451 }
2452
2453
2454 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2455 {
2456         struct p2p_data *p2p;
2457
2458         if (cfg->max_peers < 1 ||
2459             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2460                 return NULL;
2461
2462         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2463         if (p2p == NULL)
2464                 return NULL;
2465         p2p->cfg = (struct p2p_config *) (p2p + 1);
2466         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2467         if (cfg->dev_name)
2468                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2469         if (cfg->manufacturer)
2470                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2471         if (cfg->model_name)
2472                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2473         if (cfg->model_number)
2474                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2475         if (cfg->serial_number)
2476                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2477         if (cfg->pref_chan) {
2478                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2479                                                 sizeof(struct p2p_channel));
2480                 if (p2p->cfg->pref_chan) {
2481                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2482                                   cfg->num_pref_chan *
2483                                   sizeof(struct p2p_channel));
2484                 } else
2485                         p2p->cfg->num_pref_chan = 0;
2486         }
2487
2488         p2p->min_disc_int = 1;
2489         p2p->max_disc_int = 3;
2490         p2p->max_disc_tu = -1;
2491
2492         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2493                 p2p->next_tie_breaker = 0;
2494         p2p->next_tie_breaker &= 0x01;
2495         if (cfg->sd_request)
2496                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2497         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2498         if (cfg->concurrent_operations)
2499                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2500         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2501
2502         dl_list_init(&p2p->devices);
2503
2504         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2505                                p2p_expiration_timeout, p2p, NULL);
2506
2507         p2p->go_timeout = 100;
2508         p2p->client_timeout = 20;
2509         p2p->num_p2p_sd_queries = 0;
2510
2511         p2p_dbg(p2p, "initialized");
2512         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2513         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2514
2515         return p2p;
2516 }
2517
2518
2519 void p2p_deinit(struct p2p_data *p2p)
2520 {
2521 #ifdef CONFIG_WIFI_DISPLAY
2522         wpabuf_free(p2p->wfd_ie_beacon);
2523         wpabuf_free(p2p->wfd_ie_probe_req);
2524         wpabuf_free(p2p->wfd_ie_probe_resp);
2525         wpabuf_free(p2p->wfd_ie_assoc_req);
2526         wpabuf_free(p2p->wfd_ie_invitation);
2527         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2528         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2529         wpabuf_free(p2p->wfd_ie_go_neg);
2530         wpabuf_free(p2p->wfd_dev_info);
2531         wpabuf_free(p2p->wfd_assoc_bssid);
2532         wpabuf_free(p2p->wfd_coupled_sink_info);
2533 #endif /* CONFIG_WIFI_DISPLAY */
2534
2535         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2536         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2537         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2538         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2539         p2p_flush(p2p);
2540         p2p_free_req_dev_types(p2p);
2541         os_free(p2p->cfg->dev_name);
2542         os_free(p2p->cfg->manufacturer);
2543         os_free(p2p->cfg->model_name);
2544         os_free(p2p->cfg->model_number);
2545         os_free(p2p->cfg->serial_number);
2546         os_free(p2p->cfg->pref_chan);
2547         os_free(p2p->groups);
2548         wpabuf_free(p2p->sd_resp);
2549         os_free(p2p->after_scan_tx);
2550         p2p_remove_wps_vendor_extensions(p2p);
2551         os_free(p2p->no_go_freq.range);
2552         os_free(p2p);
2553 }
2554
2555
2556 void p2p_flush(struct p2p_data *p2p)
2557 {
2558         struct p2p_device *dev, *prev;
2559         p2p_stop_find(p2p);
2560         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2561                               list) {
2562                 dl_list_del(&dev->list);
2563                 p2p_device_free(p2p, dev);
2564         }
2565         p2p_free_sd_queries(p2p);
2566         os_free(p2p->after_scan_tx);
2567         p2p->after_scan_tx = NULL;
2568 }
2569
2570
2571 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2572 {
2573         struct p2p_device *dev;
2574
2575         dev = p2p_get_device(p2p, addr);
2576         if (dev == NULL)
2577                 return -1;
2578
2579         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2580
2581         if (p2p->go_neg_peer == dev)
2582                 p2p->go_neg_peer = NULL;
2583
2584         dev->wps_method = WPS_NOT_READY;
2585         dev->oob_pw_id = 0;
2586         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2587         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2588
2589         /* Check if after_scan_tx is for this peer. If so free it */
2590         if (p2p->after_scan_tx &&
2591             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2592                 os_free(p2p->after_scan_tx);
2593                 p2p->after_scan_tx = NULL;
2594         }
2595
2596         return 0;
2597 }
2598
2599
2600 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2601 {
2602         os_free(p2p->cfg->dev_name);
2603         if (dev_name) {
2604                 p2p->cfg->dev_name = os_strdup(dev_name);
2605                 if (p2p->cfg->dev_name == NULL)
2606                         return -1;
2607         } else
2608                 p2p->cfg->dev_name = NULL;
2609         return 0;
2610 }
2611
2612
2613 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2614 {
2615         os_free(p2p->cfg->manufacturer);
2616         p2p->cfg->manufacturer = NULL;
2617         if (manufacturer) {
2618                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2619                 if (p2p->cfg->manufacturer == NULL)
2620                         return -1;
2621         }
2622
2623         return 0;
2624 }
2625
2626
2627 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2628 {
2629         os_free(p2p->cfg->model_name);
2630         p2p->cfg->model_name = NULL;
2631         if (model_name) {
2632                 p2p->cfg->model_name = os_strdup(model_name);
2633                 if (p2p->cfg->model_name == NULL)
2634                         return -1;
2635         }
2636
2637         return 0;
2638 }
2639
2640
2641 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2642 {
2643         os_free(p2p->cfg->model_number);
2644         p2p->cfg->model_number = NULL;
2645         if (model_number) {
2646                 p2p->cfg->model_number = os_strdup(model_number);
2647                 if (p2p->cfg->model_number == NULL)
2648                         return -1;
2649         }
2650
2651         return 0;
2652 }
2653
2654
2655 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2656 {
2657         os_free(p2p->cfg->serial_number);
2658         p2p->cfg->serial_number = NULL;
2659         if (serial_number) {
2660                 p2p->cfg->serial_number = os_strdup(serial_number);
2661                 if (p2p->cfg->serial_number == NULL)
2662                         return -1;
2663         }
2664
2665         return 0;
2666 }
2667
2668
2669 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2670 {
2671         p2p->cfg->config_methods = config_methods;
2672 }
2673
2674
2675 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2676 {
2677         os_memcpy(p2p->cfg->uuid, uuid, 16);
2678 }
2679
2680
2681 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2682 {
2683         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2684         return 0;
2685 }
2686
2687
2688 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2689                           size_t num_dev_types)
2690 {
2691         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2692                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2693         p2p->cfg->num_sec_dev_types = num_dev_types;
2694         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2695         return 0;
2696 }
2697
2698
2699 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2700 {
2701         int i;
2702
2703         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2704                 wpabuf_free(p2p->wps_vendor_ext[i]);
2705                 p2p->wps_vendor_ext[i] = NULL;
2706         }
2707 }
2708
2709
2710 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2711                                  const struct wpabuf *vendor_ext)
2712 {
2713         int i;
2714
2715         if (vendor_ext == NULL)
2716                 return -1;
2717
2718         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2719                 if (p2p->wps_vendor_ext[i] == NULL)
2720                         break;
2721         }
2722         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2723                 return -1;
2724
2725         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2726         if (p2p->wps_vendor_ext[i] == NULL)
2727                 return -1;
2728
2729         return 0;
2730 }
2731
2732
2733 int p2p_set_country(struct p2p_data *p2p, const char *country)
2734 {
2735         os_memcpy(p2p->cfg->country, country, 3);
2736         return 0;
2737 }
2738
2739
2740 void p2p_continue_find(struct p2p_data *p2p)
2741 {
2742         struct p2p_device *dev;
2743         p2p_set_state(p2p, P2P_SEARCH);
2744         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2745                 if (dev->sd_pending_bcast_queries == 0) {
2746                         /* Initialize with total number of registered broadcast
2747                          * SD queries. */
2748                         dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2749                 }
2750
2751                 if (p2p_start_sd(p2p, dev) == 0)
2752                         return;
2753                 if (dev->req_config_methods &&
2754                     !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2755                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2756                                 MACSTR " (config methods 0x%x)",
2757                                 MAC2STR(dev->info.p2p_device_addr),
2758                                 dev->req_config_methods);
2759                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2760                                 return;
2761                 }
2762         }
2763
2764         p2p_listen_in_find(p2p, 1);
2765 }
2766
2767
2768 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2769 {
2770         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2771                 success);
2772         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2773
2774         if (!success) {
2775                 p2p->sd_peer = NULL;
2776                 p2p_continue_find(p2p);
2777                 return;
2778         }
2779
2780         if (p2p->sd_peer == NULL) {
2781                 p2p_dbg(p2p, "No SD peer entry known");
2782                 p2p_continue_find(p2p);
2783                 return;
2784         }
2785
2786         /* Wait for response from the peer */
2787         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2788         p2p_set_timeout(p2p, 0, 200000);
2789 }
2790
2791
2792 /**
2793  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2794  * @p2p: P2P module context from p2p_init()
2795  */
2796 static void p2p_retry_pd(struct p2p_data *p2p)
2797 {
2798         struct p2p_device *dev;
2799
2800         if (p2p->state != P2P_IDLE)
2801                 return;
2802
2803         /*
2804          * Retry the prov disc req attempt only for the peer that the user had
2805          * requested.
2806          */
2807
2808         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2809                 if (os_memcmp(p2p->pending_pd_devaddr,
2810                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2811                         continue;
2812                 if (!dev->req_config_methods)
2813                         continue;
2814
2815                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2816                         MACSTR " (config methods 0x%x)",
2817                         MAC2STR(dev->info.p2p_device_addr),
2818                         dev->req_config_methods);
2819                 p2p_send_prov_disc_req(p2p, dev,
2820                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2821                                        p2p->pd_force_freq);
2822                 return;
2823         }
2824 }
2825
2826
2827 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2828 {
2829         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2830                 success);
2831
2832         /*
2833          * Postpone resetting the pending action state till after we actually
2834          * time out. This allows us to take some action like notifying any
2835          * interested parties about no response to the request.
2836          *
2837          * When the timer (below) goes off we check in IDLE, SEARCH, or
2838          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2839          * requests in, if this was still pending and then raise notification.
2840          */
2841
2842         if (!success) {
2843                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2844
2845                 if (p2p->user_initiated_pd &&
2846                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2847                 {
2848                         /* Retry request from timeout to avoid busy loops */
2849                         p2p->pending_action_state = P2P_PENDING_PD;
2850                         p2p_set_timeout(p2p, 0, 50000);
2851                 } else if (p2p->state != P2P_IDLE)
2852                         p2p_continue_find(p2p);
2853                 else if (p2p->user_initiated_pd) {
2854                         p2p->pending_action_state = P2P_PENDING_PD;
2855                         p2p_set_timeout(p2p, 0, 300000);
2856                 }
2857                 return;
2858         }
2859
2860         /*
2861          * This postponing, of resetting pending_action_state, needs to be
2862          * done only for user initiated PD requests and not internal ones.
2863          */
2864         if (p2p->user_initiated_pd)
2865                 p2p->pending_action_state = P2P_PENDING_PD;
2866         else
2867                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2868
2869         /* Wait for response from the peer */
2870         if (p2p->state == P2P_SEARCH)
2871                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2872         p2p_set_timeout(p2p, 0, 200000);
2873 }
2874
2875
2876 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2877                          struct os_reltime *rx_time, int level, const u8 *ies,
2878                          size_t ies_len)
2879 {
2880         if (os_reltime_before(rx_time, &p2p->find_start)) {
2881                 /*
2882                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2883                  * scan results for relatively long time. To avoid reporting
2884                  * stale information, update P2P peers only based on results
2885                  * that have based on frames received after the last p2p_find
2886                  * operation was started.
2887                  */
2888                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2889                         " (rx_time=%u.%06u)",
2890                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2891                         (unsigned int) rx_time->usec);
2892                 return 0;
2893         }
2894
2895         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2896
2897         return 0;
2898 }
2899
2900
2901 void p2p_scan_res_handled(struct p2p_data *p2p)
2902 {
2903         if (!p2p->p2p_scan_running) {
2904                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2905         }
2906         p2p->p2p_scan_running = 0;
2907         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2908
2909         if (p2p_run_after_scan(p2p))
2910                 return;
2911         if (p2p->state == P2P_SEARCH)
2912                 p2p_continue_find(p2p);
2913 }
2914
2915
2916 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2917 {
2918         u8 *len;
2919
2920 #ifdef CONFIG_WIFI_DISPLAY
2921         if (p2p->wfd_ie_probe_req)
2922                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2923 #endif /* CONFIG_WIFI_DISPLAY */
2924
2925         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2926                 wpabuf_put_buf(ies,
2927                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2928
2929         len = p2p_buf_add_ie_hdr(ies);
2930         p2p_buf_add_capability(ies, p2p->dev_capab &
2931                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2932         if (dev_id)
2933                 p2p_buf_add_device_id(ies, dev_id);
2934         if (p2p->cfg->reg_class && p2p->cfg->channel)
2935                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2936                                            p2p->cfg->reg_class,
2937                                            p2p->cfg->channel);
2938         if (p2p->ext_listen_interval)
2939                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2940                                               p2p->ext_listen_interval);
2941         /* TODO: p2p_buf_add_operating_channel() if GO */
2942         p2p_buf_update_ie_hdr(ies, len);
2943 }
2944
2945
2946 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2947 {
2948         size_t len = 100;
2949
2950 #ifdef CONFIG_WIFI_DISPLAY
2951         if (p2p && p2p->wfd_ie_probe_req)
2952                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2953 #endif /* CONFIG_WIFI_DISPLAY */
2954
2955         if (p2p && p2p->vendor_elem &&
2956             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2957                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2958
2959         return len;
2960 }
2961
2962
2963 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2964 {
2965         return p2p_attr_text(p2p_ie, buf, end);
2966 }
2967
2968
2969 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2970 {
2971         struct p2p_device *dev = p2p->go_neg_peer;
2972         int timeout;
2973
2974         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2975
2976         if (dev == NULL) {
2977                 p2p_dbg(p2p, "No pending GO Negotiation");
2978                 return;
2979         }
2980
2981         if (success) {
2982                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2983                         p2p_set_state(p2p, P2P_IDLE);
2984                         return;
2985                 }
2986         } else if (dev->go_neg_req_sent) {
2987                 /* Cancel the increment from p2p_connect_send() on failure */
2988                 dev->go_neg_req_sent--;
2989         }
2990
2991         if (!success &&
2992             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2993             !is_zero_ether_addr(dev->member_in_go_dev)) {
2994                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2995                         MAC2STR(dev->info.p2p_device_addr));
2996                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2997                 p2p_send_dev_disc_req(p2p, dev);
2998                 return;
2999         }
3000
3001         /*
3002          * Use P2P find, if needed, to find the other device from its listen
3003          * channel.
3004          */
3005         p2p_set_state(p2p, P2P_CONNECT);
3006         timeout = success ? 500000 : 100000;
3007         if (!success && p2p->go_neg_peer &&
3008             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3009                 unsigned int r;
3010                 /*
3011                  * Peer is expected to wait our response and we will skip the
3012                  * listen phase. Add some randomness to the wait time here to
3013                  * make it less likely to hit cases where we could end up in
3014                  * sync with peer not listening.
3015                  */
3016                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3017                         r = 0;
3018                 timeout += r % 100000;
3019         }
3020         p2p_set_timeout(p2p, 0, timeout);
3021 }
3022
3023
3024 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3025 {
3026         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3027                 success);
3028         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3029                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3030                 return;
3031         }
3032         p2p_set_state(p2p, P2P_CONNECT);
3033         p2p_set_timeout(p2p, 0, 500000);
3034 }
3035
3036
3037 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3038                                        const u8 *addr)
3039 {
3040         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3041         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3042                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3043                                   p2p->go_neg_peer->status);
3044         } else if (success) {
3045                 struct p2p_device *dev;
3046                 dev = p2p_get_device(p2p, addr);
3047                 if (dev &&
3048                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3049                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3050         }
3051 }
3052
3053
3054 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3055                                enum p2p_send_action_result result)
3056 {
3057         struct p2p_device *dev;
3058
3059         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3060         if (result == P2P_SEND_ACTION_FAILED) {
3061                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3062                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3063                 return;
3064         }
3065
3066         dev = p2p->go_neg_peer;
3067
3068         if (result == P2P_SEND_ACTION_NO_ACK) {
3069                 /*
3070                  * Retry GO Negotiation Confirmation
3071                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3072                  * ACK for confirmation.
3073                  */
3074                 if (dev && dev->go_neg_conf &&
3075                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3076                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3077                                 dev->go_neg_conf_sent);
3078                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3079                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3080                                             dev->info.p2p_device_addr,
3081                                             p2p->cfg->dev_addr,
3082                                             dev->info.p2p_device_addr,
3083                                             wpabuf_head(dev->go_neg_conf),
3084                                             wpabuf_len(dev->go_neg_conf), 0) >=
3085                             0) {
3086                                 dev->go_neg_conf_sent++;
3087                                 return;
3088                         }
3089                         p2p_dbg(p2p, "Failed to re-send Action frame");
3090
3091                         /*
3092                          * Continue with the assumption that the first attempt
3093                          * went through and just the ACK frame was lost.
3094                          */
3095                 }
3096
3097                 /*
3098                  * It looks like the TX status for GO Negotiation Confirm is
3099                  * often showing failure even when the peer has actually
3100                  * received the frame. Since the peer may change channels
3101                  * immediately after having received the frame, we may not see
3102                  * an Ack for retries, so just dropping a single frame may
3103                  * trigger this. To allow the group formation to succeed if the
3104                  * peer did indeed receive the frame, continue regardless of
3105                  * the TX status.
3106                  */
3107                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3108         }
3109
3110         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3111
3112         if (dev == NULL)
3113                 return;
3114
3115         p2p_go_complete(p2p, dev);
3116 }
3117
3118
3119 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3120                         const u8 *src, const u8 *bssid,
3121                         enum p2p_send_action_result result)
3122 {
3123         enum p2p_pending_action_state state;
3124         int success;
3125
3126         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3127                 " src=" MACSTR " bssid=" MACSTR " result=%d",
3128                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3129                 MAC2STR(bssid), result);
3130         success = result == P2P_SEND_ACTION_SUCCESS;
3131         state = p2p->pending_action_state;
3132         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3133         switch (state) {
3134         case P2P_NO_PENDING_ACTION:
3135                 if (p2p->send_action_in_progress) {
3136                         p2p->send_action_in_progress = 0;
3137                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3138                 }
3139                 if (p2p->after_scan_tx_in_progress) {
3140                         p2p->after_scan_tx_in_progress = 0;
3141                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3142                             p2p_run_after_scan(p2p))
3143                                 break;
3144                         if (p2p->state == P2P_SEARCH) {
3145                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3146                                 p2p_continue_find(p2p);
3147                         }
3148                 }
3149                 break;
3150         case P2P_PENDING_GO_NEG_REQUEST:
3151                 p2p_go_neg_req_cb(p2p, success);
3152                 break;
3153         case P2P_PENDING_GO_NEG_RESPONSE:
3154                 p2p_go_neg_resp_cb(p2p, success);
3155                 break;
3156         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3157                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3158                 break;
3159         case P2P_PENDING_GO_NEG_CONFIRM:
3160                 p2p_go_neg_conf_cb(p2p, result);
3161                 break;
3162         case P2P_PENDING_SD:
3163                 p2p_sd_cb(p2p, success);
3164                 break;
3165         case P2P_PENDING_PD:
3166                 p2p_prov_disc_cb(p2p, success);
3167                 break;
3168         case P2P_PENDING_INVITATION_REQUEST:
3169                 p2p_invitation_req_cb(p2p, success);
3170                 break;
3171         case P2P_PENDING_INVITATION_RESPONSE:
3172                 p2p_invitation_resp_cb(p2p, success);
3173                 break;
3174         case P2P_PENDING_DEV_DISC_REQUEST:
3175                 p2p_dev_disc_req_cb(p2p, success);
3176                 break;
3177         case P2P_PENDING_DEV_DISC_RESPONSE:
3178                 p2p_dev_disc_resp_cb(p2p, success);
3179                 break;
3180         case P2P_PENDING_GO_DISC_REQ:
3181                 p2p_go_disc_req_cb(p2p, success);
3182                 break;
3183         }
3184
3185         p2p->after_scan_tx_in_progress = 0;
3186 }
3187
3188
3189 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3190                    unsigned int duration)
3191 {
3192         if (freq == p2p->pending_client_disc_freq) {
3193                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3194                 p2p->pending_client_disc_freq = 0;
3195                 return;
3196         }
3197
3198         if (freq != p2p->pending_listen_freq) {
3199                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3200                         freq, duration, p2p->pending_listen_freq);
3201                 return;
3202         }
3203
3204         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3205                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3206                 p2p->pending_listen_freq);
3207         p2p->in_listen = 1;
3208         p2p->drv_in_listen = freq;
3209         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3210                 /*
3211                  * Add 20 msec extra wait to avoid race condition with driver
3212                  * remain-on-channel end event, i.e., give driver more time to
3213                  * complete the operation before our timeout expires.
3214                  */
3215                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3216                                 p2p->pending_listen_usec + 20000);
3217         }
3218
3219         p2p->pending_listen_freq = 0;
3220 }
3221
3222
3223 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3224 {
3225         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3226         p2p->drv_in_listen = 0;
3227         if (p2p->in_listen)
3228                 return 0; /* Internal timeout will trigger the next step */
3229
3230         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3231                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3232                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3233                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3234                         return 0;
3235                 }
3236
3237                 p2p_set_state(p2p, P2P_CONNECT);
3238                 p2p_connect_send(p2p, p2p->go_neg_peer);
3239                 return 1;
3240         } else if (p2p->state == P2P_SEARCH) {
3241                 if (p2p->p2p_scan_running) {
3242                          /*
3243                           * Search is already in progress. This can happen if
3244                           * an Action frame RX is reported immediately after
3245                           * the end of a remain-on-channel operation and the
3246                           * response frame to that is sent using an offchannel
3247                           * operation while in p2p_find. Avoid an attempt to
3248                           * restart a scan here.
3249                           */
3250                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3251                         return 1;
3252                 }
3253                 if (p2p->pending_listen_freq) {
3254                         /*
3255                          * Better wait a bit if the driver is unable to start
3256                          * offchannel operation for some reason. p2p_search()
3257                          * will be started from internal timeout.
3258                          */
3259                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3260                         p2p_set_timeout(p2p, 0, 100000);
3261                         return 1;
3262                 }
3263                 if (p2p->search_delay) {
3264                         p2p_dbg(p2p, "Delay search operation by %u ms",
3265                                 p2p->search_delay);
3266                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3267                                         (p2p->search_delay % 1000) * 1000);
3268                         return 1;
3269                 }
3270                 p2p_search(p2p);
3271                 return 1;
3272         }
3273
3274         return 0;
3275 }
3276
3277
3278 static void p2p_timeout_connect(struct p2p_data *p2p)
3279 {
3280         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3281         if (p2p->go_neg_peer &&
3282             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3283                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3284                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3285                 return;
3286         }
3287         if (p2p->go_neg_peer &&
3288             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3289             p2p->go_neg_peer->connect_reqs < 120) {
3290                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3291                 p2p_connect_send(p2p, p2p->go_neg_peer);
3292                 return;
3293         }
3294         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3295                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3296                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3297                 p2p_set_timeout(p2p, 0, 30000);
3298                 return;
3299         }
3300         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3301         p2p_listen_in_find(p2p, 0);
3302 }
3303
3304
3305 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3306 {
3307         if (p2p->go_neg_peer) {
3308                 if (p2p->drv_in_listen) {
3309                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3310                         return;
3311                 }
3312
3313                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3314                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3315                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3316                         return;
3317                 }
3318
3319                 p2p_set_state(p2p, P2P_CONNECT);
3320                 p2p_connect_send(p2p, p2p->go_neg_peer);
3321         } else
3322                 p2p_set_state(p2p, P2P_IDLE);
3323 }
3324
3325
3326 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3327 {
3328         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3329
3330         if (p2p->cfg->is_concurrent_session_active &&
3331             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3332                 p2p_set_timeout(p2p, 0, 500000);
3333         else
3334                 p2p_set_timeout(p2p, 0, 200000);
3335 }
3336
3337
3338 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3339 {
3340         struct p2p_device *dev = p2p->go_neg_peer;
3341         struct os_reltime now;
3342
3343         if (dev == NULL) {
3344                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3345                 return;
3346         }
3347
3348         os_get_reltime(&now);
3349         if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
3350                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3351                 p2p_go_neg_failed(p2p, dev, -1);
3352                 return;
3353         }
3354
3355         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3356         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3357         p2p_listen_in_find(p2p, 0);
3358 }
3359
3360
3361 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3362 {
3363         p2p_dbg(p2p, "Service Discovery Query timeout");
3364         if (p2p->sd_peer) {
3365                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3366                 p2p->sd_peer = NULL;
3367         }
3368         p2p_continue_find(p2p);
3369 }
3370
3371
3372 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3373 {
3374         p2p_dbg(p2p, "Provision Discovery Request timeout");
3375         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3376         p2p_continue_find(p2p);
3377 }
3378
3379
3380 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3381 {
3382         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3383
3384         /*
3385          * For user initiated PD requests that we have not gotten any responses
3386          * for while in IDLE state, we retry them a couple of times before
3387          * giving up.
3388          */
3389         if (!p2p->user_initiated_pd)
3390                 return;
3391
3392         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3393
3394         if (p2p->pd_retries) {
3395                 p2p->pd_retries--;
3396                 p2p_retry_pd(p2p);
3397         } else {
3398                 struct p2p_device *dev;
3399                 int for_join = 0;
3400
3401                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3402                         if (os_memcmp(p2p->pending_pd_devaddr,
3403                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3404                                 continue;
3405                         if (dev->req_config_methods &&
3406                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3407                                 for_join = 1;
3408                 }
3409
3410                 if (p2p->cfg->prov_disc_fail)
3411                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3412                                                  p2p->pending_pd_devaddr,
3413                                                  for_join ?
3414                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3415                                                  P2P_PROV_DISC_TIMEOUT);
3416                 p2p_reset_pending_pd(p2p);
3417         }
3418 }
3419
3420
3421 static void p2p_timeout_invite(struct p2p_data *p2p)
3422 {
3423         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3424         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3425         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3426                 /*
3427                  * Better remain on operating channel instead of listen channel
3428                  * when running a group.
3429                  */
3430                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3431                 p2p_set_timeout(p2p, 0, 100000);
3432                 return;
3433         }
3434         p2p_listen_in_find(p2p, 0);
3435 }
3436
3437
3438 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3439 {
3440         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3441                 p2p_set_state(p2p, P2P_INVITE);
3442                 p2p_invite_send(p2p, p2p->invite_peer,
3443                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3444         } else {
3445                 if (p2p->invite_peer) {
3446                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3447                         if (p2p->cfg->invitation_result)
3448                                 p2p->cfg->invitation_result(
3449                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3450                                         p2p->invite_peer->info.p2p_device_addr,
3451                                         0, 0);
3452                 }
3453                 p2p_set_state(p2p, P2P_IDLE);
3454         }
3455 }
3456
3457
3458 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3459 {
3460         struct p2p_data *p2p = eloop_ctx;
3461
3462         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3463
3464         p2p->in_listen = 0;
3465
3466         switch (p2p->state) {
3467         case P2P_IDLE:
3468                 /* Check if we timed out waiting for PD req */
3469                 if (p2p->pending_action_state == P2P_PENDING_PD)
3470                         p2p_timeout_prov_disc_req(p2p);
3471                 break;
3472         case P2P_SEARCH:
3473                 /* Check if we timed out waiting for PD req */
3474                 if (p2p->pending_action_state == P2P_PENDING_PD)
3475                         p2p_timeout_prov_disc_req(p2p);
3476                 if (p2p->search_delay && !p2p->in_search_delay) {
3477                         p2p_dbg(p2p, "Delay search operation by %u ms",
3478                                 p2p->search_delay);
3479                         p2p->in_search_delay = 1;
3480                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3481                                         (p2p->search_delay % 1000) * 1000);
3482                         break;
3483                 }
3484                 p2p->in_search_delay = 0;
3485                 p2p_search(p2p);
3486                 break;
3487         case P2P_CONNECT:
3488                 p2p_timeout_connect(p2p);
3489                 break;
3490         case P2P_CONNECT_LISTEN:
3491                 p2p_timeout_connect_listen(p2p);
3492                 break;
3493         case P2P_GO_NEG:
3494                 break;
3495         case P2P_LISTEN_ONLY:
3496                 /* Check if we timed out waiting for PD req */
3497                 if (p2p->pending_action_state == P2P_PENDING_PD)
3498                         p2p_timeout_prov_disc_req(p2p);
3499
3500                 if (p2p->ext_listen_only) {
3501                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3502                         p2p->ext_listen_only = 0;
3503                         p2p_set_state(p2p, P2P_IDLE);
3504                 }
3505                 break;
3506         case P2P_WAIT_PEER_CONNECT:
3507                 p2p_timeout_wait_peer_connect(p2p);
3508                 break;
3509         case P2P_WAIT_PEER_IDLE:
3510                 p2p_timeout_wait_peer_idle(p2p);
3511                 break;
3512         case P2P_SD_DURING_FIND:
3513                 p2p_timeout_sd_during_find(p2p);
3514                 break;
3515         case P2P_PROVISIONING:
3516                 break;
3517         case P2P_PD_DURING_FIND:
3518                 p2p_timeout_prov_disc_during_find(p2p);
3519                 break;
3520         case P2P_INVITE:
3521                 p2p_timeout_invite(p2p);
3522                 break;
3523         case P2P_INVITE_LISTEN:
3524                 p2p_timeout_invite_listen(p2p);
3525                 break;
3526         }
3527 }
3528
3529
3530 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3531 {
3532         struct p2p_device *dev;
3533
3534         dev = p2p_get_device(p2p, peer_addr);
3535         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3536                 MACSTR, MAC2STR(peer_addr));
3537         if (dev == NULL) {
3538                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3539                 return -1;
3540         }
3541         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3542         dev->flags |= P2P_DEV_USER_REJECTED;
3543         return 0;
3544 }
3545
3546
3547 const char * p2p_wps_method_text(enum p2p_wps_method method)
3548 {
3549         switch (method) {
3550         case WPS_NOT_READY:
3551                 return "not-ready";
3552         case WPS_PIN_DISPLAY:
3553                 return "Display";
3554         case WPS_PIN_KEYPAD:
3555                 return "Keypad";
3556         case WPS_PBC:
3557                 return "PBC";
3558         case WPS_NFC:
3559                 return "NFC";
3560         }
3561
3562         return "??";
3563 }
3564
3565
3566 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3567 {
3568         switch (go_state) {
3569         case UNKNOWN_GO:
3570                 return "unknown";
3571         case LOCAL_GO:
3572                 return "local";
3573         case  REMOTE_GO:
3574                 return "remote";
3575         }
3576
3577         return "??";
3578 }
3579
3580
3581 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3582                                                const u8 *addr, int next)
3583 {
3584         struct p2p_device *dev;
3585
3586         if (addr)
3587                 dev = p2p_get_device(p2p, addr);
3588         else
3589                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3590
3591         if (dev && next) {
3592                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3593                 if (&dev->list == &p2p->devices)
3594                         dev = NULL;
3595         }
3596
3597         if (dev == NULL)
3598                 return NULL;
3599
3600         return &dev->info;
3601 }
3602
3603
3604 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3605                           char *buf, size_t buflen)
3606 {
3607         struct p2p_device *dev;
3608         int res;
3609         char *pos, *end;
3610         struct os_reltime now;
3611
3612         if (info == NULL)
3613                 return -1;
3614
3615         dev = (struct p2p_device *) (((u8 *) info) -
3616                                      offsetof(struct p2p_device, info));
3617
3618         pos = buf;
3619         end = buf + buflen;
3620
3621         os_get_reltime(&now);
3622         res = os_snprintf(pos, end - pos,
3623                           "age=%d\n"
3624                           "listen_freq=%d\n"
3625                           "wps_method=%s\n"
3626                           "interface_addr=" MACSTR "\n"
3627                           "member_in_go_dev=" MACSTR "\n"
3628                           "member_in_go_iface=" MACSTR "\n"
3629                           "go_neg_req_sent=%d\n"
3630                           "go_state=%s\n"
3631                           "dialog_token=%u\n"
3632                           "intended_addr=" MACSTR "\n"
3633                           "country=%c%c\n"
3634                           "oper_freq=%d\n"
3635                           "req_config_methods=0x%x\n"
3636                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3637                           "status=%d\n"
3638                           "invitation_reqs=%u\n",
3639                           (int) (now.sec - dev->last_seen.sec),
3640                           dev->listen_freq,
3641                           p2p_wps_method_text(dev->wps_method),
3642                           MAC2STR(dev->interface_addr),
3643                           MAC2STR(dev->member_in_go_dev),
3644                           MAC2STR(dev->member_in_go_iface),
3645                           dev->go_neg_req_sent,
3646                           p2p_go_state_text(dev->go_state),
3647                           dev->dialog_token,
3648                           MAC2STR(dev->intended_addr),
3649                           dev->country[0] ? dev->country[0] : '_',
3650                           dev->country[1] ? dev->country[1] : '_',
3651                           dev->oper_freq,
3652                           dev->req_config_methods,
3653                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3654                           "[PROBE_REQ_ONLY]" : "",
3655                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3656                           dev->flags & P2P_DEV_NOT_YET_READY ?
3657                           "[NOT_YET_READY]" : "",
3658                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3659                           "[PD_PEER_DISPLAY]" : "",
3660                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3661                           "[PD_PEER_KEYPAD]" : "",
3662                           dev->flags & P2P_DEV_USER_REJECTED ?
3663                           "[USER_REJECTED]" : "",
3664                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3665                           "[PEER_WAITING_RESPONSE]" : "",
3666                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3667                           "[PREFER_PERSISTENT_GROUP]" : "",
3668                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3669                           "[WAIT_GO_NEG_RESPONSE]" : "",
3670                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3671                           "[WAIT_GO_NEG_CONFIRM]" : "",
3672                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3673                           "[GROUP_CLIENT_ONLY]" : "",
3674                           dev->flags & P2P_DEV_FORCE_FREQ ?
3675                           "[FORCE_FREQ]" : "",
3676                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3677                           "[PD_FOR_JOIN]" : "",
3678                           dev->status,
3679                           dev->invitation_reqs);
3680         if (res < 0 || res >= end - pos)
3681                 return pos - buf;
3682         pos += res;
3683
3684         if (dev->ext_listen_period) {
3685                 res = os_snprintf(pos, end - pos,
3686                                   "ext_listen_period=%u\n"
3687                                   "ext_listen_interval=%u\n",
3688                                   dev->ext_listen_period,
3689                                   dev->ext_listen_interval);
3690                 if (res < 0 || res >= end - pos)
3691                         return pos - buf;
3692                 pos += res;
3693         }
3694
3695         if (dev->oper_ssid_len) {
3696                 res = os_snprintf(pos, end - pos,
3697                                   "oper_ssid=%s\n",
3698                                   wpa_ssid_txt(dev->oper_ssid,
3699                                                dev->oper_ssid_len));
3700                 if (res < 0 || res >= end - pos)
3701                         return pos - buf;
3702                 pos += res;
3703         }
3704
3705 #ifdef CONFIG_WIFI_DISPLAY
3706         if (dev->info.wfd_subelems) {
3707                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3708                 if (res < 0 || res >= end - pos)
3709                         return pos - buf;
3710                 pos += res;
3711
3712                 pos += wpa_snprintf_hex(pos, end - pos,
3713                                         wpabuf_head(dev->info.wfd_subelems),
3714                                         wpabuf_len(dev->info.wfd_subelems));
3715
3716                 res = os_snprintf(pos, end - pos, "\n");
3717                 if (res < 0 || res >= end - pos)
3718                         return pos - buf;
3719                 pos += res;
3720         }
3721 #endif /* CONFIG_WIFI_DISPLAY */
3722
3723         return pos - buf;
3724 }
3725
3726
3727 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3728 {
3729         return p2p_get_device(p2p, addr) != NULL;
3730 }
3731
3732
3733 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3734 {
3735         if (enabled) {
3736                 p2p_dbg(p2p, "Client discoverability enabled");
3737                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3738         } else {
3739                 p2p_dbg(p2p, "Client discoverability disabled");
3740                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3741         }
3742 }
3743
3744
3745 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3746                                               u32 duration2, u32 interval2)
3747 {
3748         struct wpabuf *req;
3749         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3750         u8 *len;
3751
3752         req = wpabuf_alloc(100);
3753         if (req == NULL)
3754                 return NULL;
3755
3756         if (duration1 || interval1) {
3757                 os_memset(&desc1, 0, sizeof(desc1));
3758                 desc1.count_type = 1;
3759                 desc1.duration = duration1;
3760                 desc1.interval = interval1;
3761                 ptr1 = &desc1;
3762
3763                 if (duration2 || interval2) {
3764                         os_memset(&desc2, 0, sizeof(desc2));
3765                         desc2.count_type = 2;
3766                         desc2.duration = duration2;
3767                         desc2.interval = interval2;
3768                         ptr2 = &desc2;
3769                 }
3770         }
3771
3772         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3773         len = p2p_buf_add_ie_hdr(req);
3774         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3775         p2p_buf_update_ie_hdr(req, len);
3776
3777         return req;
3778 }
3779
3780
3781 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3782                      const u8 *own_interface_addr, unsigned int freq,
3783                      u32 duration1, u32 interval1, u32 duration2,
3784                      u32 interval2)
3785 {
3786         struct wpabuf *req;
3787
3788         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3789                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3790                 "dur2=%u int2=%u",
3791                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3792                 freq, duration1, interval1, duration2, interval2);
3793
3794         req = p2p_build_presence_req(duration1, interval1, duration2,
3795                                      interval2);
3796         if (req == NULL)
3797                 return -1;
3798
3799         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3800         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3801                             go_interface_addr,
3802                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3803                 p2p_dbg(p2p, "Failed to send Action frame");
3804         }
3805         wpabuf_free(req);
3806
3807         return 0;
3808 }
3809
3810
3811 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3812                                                size_t noa_len, u8 dialog_token)
3813 {
3814         struct wpabuf *resp;
3815         u8 *len;
3816
3817         resp = wpabuf_alloc(100 + noa_len);
3818         if (resp == NULL)
3819                 return NULL;
3820
3821         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3822         len = p2p_buf_add_ie_hdr(resp);
3823         p2p_buf_add_status(resp, status);
3824         if (noa) {
3825                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3826                 wpabuf_put_le16(resp, noa_len);
3827                 wpabuf_put_data(resp, noa, noa_len);
3828         } else
3829                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3830         p2p_buf_update_ie_hdr(resp, len);
3831
3832         return resp;
3833 }
3834
3835
3836 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3837                                      const u8 *sa, const u8 *data, size_t len,
3838                                      int rx_freq)
3839 {
3840         struct p2p_message msg;
3841         u8 status;
3842         struct wpabuf *resp;
3843         size_t g;
3844         struct p2p_group *group = NULL;
3845         int parsed = 0;
3846         u8 noa[50];
3847         int noa_len;
3848
3849         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3850
3851         for (g = 0; g < p2p->num_groups; g++) {
3852                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3853                               ETH_ALEN) == 0) {
3854                         group = p2p->groups[g];
3855                         break;
3856                 }
3857         }
3858         if (group == NULL) {
3859                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3860                         MACSTR, MAC2STR(da));
3861                 return;
3862         }
3863
3864         if (p2p_parse(data, len, &msg) < 0) {
3865                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3866                 status = P2P_SC_FAIL_INVALID_PARAMS;
3867                 goto fail;
3868         }
3869         parsed = 1;
3870
3871         if (msg.noa == NULL) {
3872                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3873                 status = P2P_SC_FAIL_INVALID_PARAMS;
3874                 goto fail;
3875         }
3876
3877         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3878
3879 fail:
3880         if (p2p->cfg->get_noa)
3881                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3882                                             sizeof(noa));
3883         else
3884                 noa_len = -1;
3885         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3886                                        noa_len > 0 ? noa_len : 0,
3887                                        msg.dialog_token);
3888         if (parsed)
3889                 p2p_parse_free(&msg);
3890         if (resp == NULL)
3891                 return;
3892
3893         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3894         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3895                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3896                 p2p_dbg(p2p, "Failed to send Action frame");
3897         }
3898         wpabuf_free(resp);
3899 }
3900
3901
3902 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3903                                       const u8 *sa, const u8 *data, size_t len)
3904 {
3905         struct p2p_message msg;
3906
3907         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3908
3909         if (p2p_parse(data, len, &msg) < 0) {
3910                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3911                 return;
3912         }
3913
3914         if (msg.status == NULL || msg.noa == NULL) {
3915                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3916                 p2p_parse_free(&msg);
3917                 return;
3918         }
3919
3920         if (p2p->cfg->presence_resp) {
3921                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3922                                         msg.noa, msg.noa_len);
3923         }
3924
3925         if (*msg.status) {
3926                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3927                         *msg.status);
3928                 p2p_parse_free(&msg);
3929                 return;
3930         }
3931
3932         p2p_dbg(p2p, "P2P Presence Request was accepted");
3933         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3934                     msg.noa, msg.noa_len);
3935         /* TODO: process NoA */
3936         p2p_parse_free(&msg);
3937 }
3938
3939
3940 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3941 {
3942         struct p2p_data *p2p = eloop_ctx;
3943
3944         if (p2p->ext_listen_interval) {
3945                 /* Schedule next extended listen timeout */
3946                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3947                                        p2p->ext_listen_interval_usec,
3948                                        p2p_ext_listen_timeout, p2p, NULL);
3949         }
3950
3951         if ((p2p->cfg->is_p2p_in_progress &&
3952              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
3953             (p2p->pending_action_state == P2P_PENDING_PD &&
3954              p2p->pd_retries > 0)) {
3955                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
3956                         p2p_state_txt(p2p->state));
3957                 return;
3958         }
3959
3960         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3961                 /*
3962                  * This should not really happen, but it looks like the Listen
3963                  * command may fail is something else (e.g., a scan) was
3964                  * running at an inconvenient time. As a workaround, allow new
3965                  * Extended Listen operation to be started.
3966                  */
3967                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3968                 p2p->ext_listen_only = 0;
3969                 p2p_set_state(p2p, P2P_IDLE);
3970         }
3971
3972         if (p2p->state != P2P_IDLE) {
3973                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3974                 return;
3975         }
3976
3977         p2p_dbg(p2p, "Extended Listen timeout");
3978         p2p->ext_listen_only = 1;
3979         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3980                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3981                 p2p->ext_listen_only = 0;
3982         }
3983 }
3984
3985
3986 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3987                    unsigned int interval)
3988 {
3989         if (period > 65535 || interval > 65535 || period > interval ||
3990             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3991                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3992                         period, interval);
3993                 return -1;
3994         }
3995
3996         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3997
3998         if (interval == 0) {
3999                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4000                 p2p->ext_listen_period = 0;
4001                 p2p->ext_listen_interval = 0;
4002                 return 0;
4003         }
4004
4005         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4006                 period, interval);
4007         p2p->ext_listen_period = period;
4008         p2p->ext_listen_interval = interval;
4009         p2p->ext_listen_interval_sec = interval / 1000;
4010         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4011
4012         eloop_register_timeout(p2p->ext_listen_interval_sec,
4013                                p2p->ext_listen_interval_usec,
4014                                p2p_ext_listen_timeout, p2p, NULL);
4015
4016         return 0;
4017 }
4018
4019
4020 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4021                       const u8 *ie, size_t ie_len)
4022 {
4023         struct p2p_message msg;
4024
4025         if (bssid == NULL || ie == NULL)
4026                 return;
4027
4028         os_memset(&msg, 0, sizeof(msg));
4029         if (p2p_parse_ies(ie, ie_len, &msg))
4030                 return;
4031         if (msg.minor_reason_code == NULL) {
4032                 p2p_parse_free(&msg);
4033                 return;
4034         }
4035
4036         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4037                 " reason_code=%u minor_reason_code=%u",
4038                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4039
4040         p2p_parse_free(&msg);
4041 }
4042
4043
4044 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4045                         const u8 *ie, size_t ie_len)
4046 {
4047         struct p2p_message msg;
4048
4049         if (bssid == NULL || ie == NULL)
4050                 return;
4051
4052         os_memset(&msg, 0, sizeof(msg));
4053         if (p2p_parse_ies(ie, ie_len, &msg))
4054                 return;
4055         if (msg.minor_reason_code == NULL) {
4056                 p2p_parse_free(&msg);
4057                 return;
4058         }
4059
4060         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4061                 " reason_code=%u minor_reason_code=%u",
4062                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4063
4064         p2p_parse_free(&msg);
4065 }
4066
4067
4068 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4069 {
4070         if (enabled) {
4071                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4072                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4073         } else {
4074                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4075                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4076         }
4077 }
4078
4079
4080 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4081                            u8 forced)
4082 {
4083         if (p2p_channel_to_freq(reg_class, channel) < 0)
4084                 return -1;
4085
4086         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4087                 reg_class, channel);
4088
4089         /*
4090          * Listen channel was set in configuration or set by control interface;
4091          * cannot override it.
4092          */
4093         if (p2p->cfg->channel_forced && forced == 0)
4094                 return -1;
4095
4096         if (p2p->state == P2P_IDLE) {
4097                 p2p->cfg->reg_class = reg_class;
4098                 p2p->cfg->channel = channel;
4099                 p2p->cfg->channel_forced = forced;
4100         } else {
4101                 p2p_dbg(p2p, "Defer setting listen channel");
4102                 p2p->pending_reg_class = reg_class;
4103                 p2p->pending_channel = channel;
4104                 p2p->pending_channel_forced = forced;
4105         }
4106
4107         return 0;
4108 }
4109
4110
4111 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4112 {
4113         return p2p->cfg->channel;
4114 }
4115
4116
4117 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4118 {
4119         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4120         if (postfix == NULL) {
4121                 p2p->cfg->ssid_postfix_len = 0;
4122                 return 0;
4123         }
4124         if (len > sizeof(p2p->cfg->ssid_postfix))
4125                 return -1;
4126         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4127         p2p->cfg->ssid_postfix_len = len;
4128         return 0;
4129 }
4130
4131
4132 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4133                          int cfg_op_channel)
4134 {
4135         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4136                 return -1;
4137
4138         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4139                 op_reg_class, op_channel);
4140         p2p->cfg->op_reg_class = op_reg_class;
4141         p2p->cfg->op_channel = op_channel;
4142         p2p->cfg->cfg_op_channel = cfg_op_channel;
4143         return 0;
4144 }
4145
4146
4147 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4148                       const struct p2p_channel *pref_chan)
4149 {
4150         struct p2p_channel *n;
4151
4152         if (pref_chan) {
4153                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4154                 if (n == NULL)
4155                         return -1;
4156                 os_memcpy(n, pref_chan,
4157                           num_pref_chan * sizeof(struct p2p_channel));
4158         } else
4159                 n = NULL;
4160
4161         os_free(p2p->cfg->pref_chan);
4162         p2p->cfg->pref_chan = n;
4163         p2p->cfg->num_pref_chan = num_pref_chan;
4164
4165         return 0;
4166 }
4167
4168
4169 int p2p_set_no_go_freq(struct p2p_data *p2p,
4170                        const struct wpa_freq_range_list *list)
4171 {
4172         struct wpa_freq_range *tmp;
4173
4174         if (list == NULL || list->num == 0) {
4175                 os_free(p2p->no_go_freq.range);
4176                 p2p->no_go_freq.range = NULL;
4177                 p2p->no_go_freq.num = 0;
4178                 return 0;
4179         }
4180
4181         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4182         if (tmp == NULL)
4183                 return -1;
4184         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4185         os_free(p2p->no_go_freq.range);
4186         p2p->no_go_freq.range = tmp;
4187         p2p->no_go_freq.num = list->num;
4188         p2p_dbg(p2p, "Updated no GO chan list");
4189
4190         return 0;
4191 }
4192
4193
4194 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4195                            u8 *iface_addr)
4196 {
4197         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4198         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4199                 return -1;
4200         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4201         return 0;
4202 }
4203
4204
4205 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4206                            u8 *dev_addr)
4207 {
4208         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4209         if (dev == NULL)
4210                 return -1;
4211         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4212         return 0;
4213 }
4214
4215
4216 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4217 {
4218         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4219         if (is_zero_ether_addr(p2p->peer_filter))
4220                 p2p_dbg(p2p, "Disable peer filter");
4221         else
4222                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4223                         MAC2STR(p2p->peer_filter));
4224 }
4225
4226
4227 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4228 {
4229         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4230         if (p2p->cross_connect == enabled)
4231                 return;
4232         p2p->cross_connect = enabled;
4233         /* TODO: may need to tear down any action group where we are GO(?) */
4234 }
4235
4236
4237 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4238 {
4239         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4240         if (dev == NULL)
4241                 return -1;
4242         if (dev->oper_freq <= 0)
4243                 return -1;
4244         return dev->oper_freq;
4245 }
4246
4247
4248 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4249 {
4250         p2p_dbg(p2p, "Intra BSS distribution %s",
4251                 enabled ? "enabled" : "disabled");
4252         p2p->cfg->p2p_intra_bss = enabled;
4253 }
4254
4255
4256 void p2p_update_channel_list(struct p2p_data *p2p,
4257                              const struct p2p_channels *chan,
4258                              const struct p2p_channels *cli_chan)
4259 {
4260         p2p_dbg(p2p, "Update channel list");
4261         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4262         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4263         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4264                   sizeof(struct p2p_channels));
4265         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4266 }
4267
4268
4269 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4270                     const u8 *src, const u8 *bssid, const u8 *buf,
4271                     size_t len, unsigned int wait_time)
4272 {
4273         if (p2p->p2p_scan_running) {
4274                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4275                 if (p2p->after_scan_tx) {
4276                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4277                         os_free(p2p->after_scan_tx);
4278                 }
4279                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4280                                                len);
4281                 if (p2p->after_scan_tx == NULL)
4282                         return -1;
4283                 p2p->after_scan_tx->freq = freq;
4284                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4285                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4286                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4287                 p2p->after_scan_tx->len = len;
4288                 p2p->after_scan_tx->wait_time = wait_time;
4289                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4290                 return 0;
4291         }
4292
4293         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4294                                      buf, len, wait_time);
4295 }
4296
4297
4298 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4299                            int freq_overall)
4300 {
4301         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4302                 freq_24, freq_5, freq_overall);
4303         p2p->best_freq_24 = freq_24;
4304         p2p->best_freq_5 = freq_5;
4305         p2p->best_freq_overall = freq_overall;
4306 }
4307
4308
4309 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4310 {
4311         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4312         p2p->own_freq_preference = freq;
4313 }
4314
4315
4316 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4317 {
4318         if (p2p == NULL || p2p->go_neg_peer == NULL)
4319                 return NULL;
4320         return p2p->go_neg_peer->info.p2p_device_addr;
4321 }
4322
4323
4324 const struct p2p_peer_info *
4325 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4326 {
4327         struct p2p_device *dev;
4328
4329         if (addr) {
4330                 dev = p2p_get_device(p2p, addr);
4331                 if (!dev)
4332                         return NULL;
4333
4334                 if (!next) {
4335                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4336                                 return NULL;
4337
4338                         return &dev->info;
4339                 } else {
4340                         do {
4341                                 dev = dl_list_first(&dev->list,
4342                                                     struct p2p_device,
4343                                                     list);
4344                                 if (!dev || &dev->list == &p2p->devices)
4345                                         return NULL;
4346                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4347                 }
4348         } else {
4349                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4350                 if (!dev)
4351                         return NULL;
4352                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4353                         dev = dl_list_first(&dev->list,
4354                                             struct p2p_device,
4355                                             list);
4356                         if (!dev || &dev->list == &p2p->devices)
4357                                 return NULL;
4358                 }
4359         }
4360
4361         return &dev->info;
4362 }
4363
4364
4365 int p2p_in_progress(struct p2p_data *p2p)
4366 {
4367         if (p2p == NULL)
4368                 return 0;
4369         if (p2p->state == P2P_SEARCH)
4370                 return 2;
4371         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4372 }
4373
4374
4375 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4376                             u8 client_timeout)
4377 {
4378         if (p2p) {
4379                 p2p->go_timeout = go_timeout;
4380                 p2p->client_timeout = client_timeout;
4381         }
4382 }
4383
4384
4385 #ifdef CONFIG_WIFI_DISPLAY
4386
4387 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4388 {
4389         size_t g;
4390         struct p2p_group *group;
4391
4392         for (g = 0; g < p2p->num_groups; g++) {
4393                 group = p2p->groups[g];
4394                 p2p_group_force_beacon_update_ies(group);
4395         }
4396 }
4397
4398
4399 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4400 {
4401         wpabuf_free(p2p->wfd_ie_beacon);
4402         p2p->wfd_ie_beacon = ie;
4403         p2p_update_wfd_ie_groups(p2p);
4404         return 0;
4405 }
4406
4407
4408 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4409 {
4410         wpabuf_free(p2p->wfd_ie_probe_req);
4411         p2p->wfd_ie_probe_req = ie;
4412         return 0;
4413 }
4414
4415
4416 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4417 {
4418         wpabuf_free(p2p->wfd_ie_probe_resp);
4419         p2p->wfd_ie_probe_resp = ie;
4420         p2p_update_wfd_ie_groups(p2p);
4421         return 0;
4422 }
4423
4424
4425 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4426 {
4427         wpabuf_free(p2p->wfd_ie_assoc_req);
4428         p2p->wfd_ie_assoc_req = ie;
4429         return 0;
4430 }
4431
4432
4433 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4434 {
4435         wpabuf_free(p2p->wfd_ie_invitation);
4436         p2p->wfd_ie_invitation = ie;
4437         return 0;
4438 }
4439
4440
4441 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4442 {
4443         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4444         p2p->wfd_ie_prov_disc_req = ie;
4445         return 0;
4446 }
4447
4448
4449 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4450 {
4451         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4452         p2p->wfd_ie_prov_disc_resp = ie;
4453         return 0;
4454 }
4455
4456
4457 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4458 {
4459         wpabuf_free(p2p->wfd_ie_go_neg);
4460         p2p->wfd_ie_go_neg = ie;
4461         return 0;
4462 }
4463
4464
4465 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4466 {
4467         wpabuf_free(p2p->wfd_dev_info);
4468         if (elem) {
4469                 p2p->wfd_dev_info = wpabuf_dup(elem);
4470                 if (p2p->wfd_dev_info == NULL)
4471                         return -1;
4472         } else
4473                 p2p->wfd_dev_info = NULL;
4474
4475         return 0;
4476 }
4477
4478
4479 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4480 {
4481         wpabuf_free(p2p->wfd_assoc_bssid);
4482         if (elem) {
4483                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4484                 if (p2p->wfd_assoc_bssid == NULL)
4485                         return -1;
4486         } else
4487                 p2p->wfd_assoc_bssid = NULL;
4488
4489         return 0;
4490 }
4491
4492
4493 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4494                                   const struct wpabuf *elem)
4495 {
4496         wpabuf_free(p2p->wfd_coupled_sink_info);
4497         if (elem) {
4498                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4499                 if (p2p->wfd_coupled_sink_info == NULL)
4500                         return -1;
4501         } else
4502                 p2p->wfd_coupled_sink_info = NULL;
4503
4504         return 0;
4505 }
4506
4507 #endif /* CONFIG_WIFI_DISPLAY */
4508
4509
4510 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4511                      int max_disc_tu)
4512 {
4513         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4514                 return -1;
4515
4516         p2p->min_disc_int = min_disc_int;
4517         p2p->max_disc_int = max_disc_int;
4518         p2p->max_disc_tu = max_disc_tu;
4519         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4520                 min_disc_int, max_disc_int, max_disc_tu);
4521
4522         return 0;
4523 }
4524
4525
4526 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4527 {
4528         va_list ap;
4529         char buf[500];
4530
4531         if (!p2p->cfg->debug_print)
4532                 return;
4533
4534         va_start(ap, fmt);
4535         vsnprintf(buf, sizeof(buf), fmt, ap);
4536         buf[sizeof(buf) - 1] = '\0';
4537         va_end(ap);
4538         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4539 }
4540
4541
4542 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4543 {
4544         va_list ap;
4545         char buf[500];
4546
4547         if (!p2p->cfg->debug_print)
4548                 return;
4549
4550         va_start(ap, fmt);
4551         vsnprintf(buf, sizeof(buf), fmt, ap);
4552         buf[sizeof(buf) - 1] = '\0';
4553         va_end(ap);
4554         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4555 }
4556
4557
4558 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4559 {
4560         va_list ap;
4561         char buf[500];
4562
4563         if (!p2p->cfg->debug_print)
4564                 return;
4565
4566         va_start(ap, fmt);
4567         vsnprintf(buf, sizeof(buf), fmt, ap);
4568         buf[sizeof(buf) - 1] = '\0';
4569         va_end(ap);
4570         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4571 }
4572
4573
4574 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4575                              void (*peer_callback)(struct p2p_peer_info *peer,
4576                                                    void *user_data),
4577                              void *user_data)
4578 {
4579         struct p2p_device *dev, *n;
4580
4581         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4582                 peer_callback(&dev->info, user_data);
4583         }
4584 }
4585
4586
4587 #ifdef CONFIG_WPS_NFC
4588
4589 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4590                                               int client_freq,
4591                                               const u8 *go_dev_addr,
4592                                               const u8 *ssid, size_t ssid_len)
4593 {
4594         struct wpabuf *buf;
4595         u8 op_class, channel;
4596         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4597
4598         buf = wpabuf_alloc(1000);
4599         if (buf == NULL)
4600                 return NULL;
4601
4602         op_class = p2p->cfg->reg_class;
4603         channel = p2p->cfg->channel;
4604
4605         p2p_buf_add_capability(buf, p2p->dev_capab &
4606                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4607         p2p_buf_add_device_info(buf, p2p, NULL);
4608
4609         if (p2p->num_groups > 0) {
4610                 int freq = p2p_group_get_freq(p2p->groups[0]);
4611                 role = P2P_GO_IN_A_GROUP;
4612                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4613                         p2p_dbg(p2p,
4614                                 "Unknown GO operating frequency %d MHz for NFC handover",
4615                                 freq);
4616                         wpabuf_free(buf);
4617                         return NULL;
4618                 }
4619         } else if (client_freq > 0) {
4620                 role = P2P_CLIENT_IN_A_GROUP;
4621                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4622                         p2p_dbg(p2p,
4623                                 "Unknown client operating frequency %d MHz for NFC handover",
4624                                 client_freq);
4625                         wpabuf_free(buf);
4626                         return NULL;
4627                 }
4628         }
4629
4630         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4631                                        channel, role);
4632
4633         if (p2p->num_groups > 0) {
4634                 /* Limit number of clients to avoid very long message */
4635                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4636                 p2p_group_buf_add_id(p2p->groups[0], buf);
4637         } else if (client_freq > 0 &&
4638                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4639                    ssid && ssid_len > 0) {
4640                 /*
4641                  * Add the optional P2P Group ID to indicate in which group this
4642                  * device is a P2P Client.
4643                  */
4644                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4645         }
4646
4647         return buf;
4648 }
4649
4650
4651 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4652                                            int client_freq,
4653                                            const u8 *go_dev_addr,
4654                                            const u8 *ssid, size_t ssid_len)
4655 {
4656         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4657                                       ssid_len);
4658 }
4659
4660
4661 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4662                                            int client_freq,
4663                                            const u8 *go_dev_addr,
4664                                            const u8 *ssid, size_t ssid_len)
4665 {
4666         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4667                                       ssid_len);
4668 }
4669
4670
4671 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4672                                         struct p2p_nfc_params *params)
4673 {
4674         struct p2p_message msg;
4675         struct p2p_device *dev;
4676         const u8 *p2p_dev_addr;
4677         int freq;
4678         enum p2p_role_indication role;
4679
4680         params->next_step = NO_ACTION;
4681
4682         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4683                                    params->p2p_attr, params->p2p_len, &msg)) {
4684                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4685                 p2p_parse_free(&msg);
4686                 return -1;
4687         }
4688
4689         if (msg.p2p_device_addr)
4690                 p2p_dev_addr = msg.p2p_device_addr;
4691         else if (msg.device_id)
4692                 p2p_dev_addr = msg.device_id;
4693         else {
4694                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4695                 p2p_parse_free(&msg);
4696                 return -1;
4697         }
4698
4699         if (msg.oob_dev_password) {
4700                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4701                           msg.oob_dev_password_len);
4702                 params->oob_dev_pw_len = msg.oob_dev_password_len;
4703         }
4704
4705         dev = p2p_create_device(p2p, p2p_dev_addr);
4706         if (dev == NULL) {
4707                 p2p_parse_free(&msg);
4708                 return -1;
4709         }
4710
4711         params->peer = &dev->info;
4712
4713         os_get_reltime(&dev->last_seen);
4714         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4715         p2p_copy_wps_info(p2p, dev, 0, &msg);
4716
4717         if (!msg.oob_go_neg_channel) {
4718                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4719                 return -1;
4720         }
4721
4722         if (msg.oob_go_neg_channel[3] == 0 &&
4723             msg.oob_go_neg_channel[4] == 0)
4724                 freq = 0;
4725         else
4726                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4727                                            msg.oob_go_neg_channel[4]);
4728         if (freq < 0) {
4729                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4730                 return -1;
4731         }
4732         role = msg.oob_go_neg_channel[5];
4733
4734         if (role == P2P_GO_IN_A_GROUP) {
4735                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4736                 params->go_freq = freq;
4737         } else if (role == P2P_CLIENT_IN_A_GROUP) {
4738                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4739                         freq);
4740                 params->go_freq = freq;
4741         } else
4742                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4743         dev->oob_go_neg_freq = freq;
4744
4745         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4746                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4747                                            p2p->cfg->channel);
4748                 if (freq < 0) {
4749                         p2p_dbg(p2p, "Own listen channel not known");
4750                         return -1;
4751                 }
4752                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4753                 dev->oob_go_neg_freq = freq;
4754         }
4755
4756         if (msg.group_id) {
4757                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4758                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4759                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4760                           params->go_ssid_len);
4761         }
4762
4763         if (dev->flags & P2P_DEV_USER_REJECTED) {
4764                 p2p_dbg(p2p, "Do not report rejected device");
4765                 p2p_parse_free(&msg);
4766                 return 0;
4767         }
4768
4769         if (!(dev->flags & P2P_DEV_REPORTED)) {
4770                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4771                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
4772                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4773         }
4774         p2p_parse_free(&msg);
4775
4776         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4777                 params->next_step = BOTH_GO;
4778         else if (role == P2P_GO_IN_A_GROUP)
4779                 params->next_step = JOIN_GROUP;
4780         else if (role == P2P_CLIENT_IN_A_GROUP) {
4781                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4782                 params->next_step = PEER_CLIENT;
4783         } else if (p2p->num_groups > 0)
4784                 params->next_step = AUTH_JOIN;
4785         else if (params->sel)
4786                 params->next_step = INIT_GO_NEG;
4787         else
4788                 params->next_step = RESP_GO_NEG;
4789
4790         return 0;
4791 }
4792
4793
4794 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4795                                       int go_intent,
4796                                       const u8 *own_interface_addr)
4797 {
4798
4799         p2p->authorized_oob_dev_pw_id = dev_pw_id;
4800         if (dev_pw_id == 0) {
4801                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4802                 return;
4803         }
4804
4805         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4806                 dev_pw_id);
4807
4808         p2p->go_intent = go_intent;
4809         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4810 }
4811
4812 #endif /* CONFIG_WPS_NFC */
4813
4814
4815 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4816 {
4817         if (len < 8 || len > 63)
4818                 return -1;
4819         p2p->cfg->passphrase_len = len;
4820         return 0;
4821 }
4822
4823
4824 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4825 {
4826         p2p->vendor_elem = vendor_elem;
4827 }