libeap/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 "crypto/sha256.h"
  17 #include "crypto/crypto.h"
  18 #include "wps/wps_i.h"
  19 #include "p2p_i.h"
  20 #include "p2p.h"
  21
  22
  23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  26                                      const u8 *sa, const u8 *data, size_t len,
  27                                      int rx_freq);
  28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  29                                       const u8 *sa, const u8 *data,
  30                                       size_t len);
  31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  33
  34
  35 /*
  36  * p2p_scan recovery timeout
  37  *
  38  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  39  * timeout for this to avoid hitting P2P timeout unnecessarily.
  40  */
  41 #define P2P_SCAN_TIMEOUT 35
  42
  43 /**
  44  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  45  * entries will be removed
  46  */
  47 #ifndef P2P_PEER_EXPIRATION_AGE
  48 #define P2P_PEER_EXPIRATION_AGE 60
  49 #endif /* P2P_PEER_EXPIRATION_AGE */
  50
  51
  52 void p2p_expire_peers(struct p2p_data *p2p)
  53 {
  54         struct p2p_device *dev, *n;
  55         struct os_reltime now;
  56         size_t i;
  57
  58         os_get_reltime(&now);
  59         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  60                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  61                         continue;
  62
  63                 if (dev == p2p->go_neg_peer) {
  64                         /*
  65                          * GO Negotiation is in progress with the peer, so
  66                          * don't expire the peer entry until GO Negotiation
  67                          * fails or times out.
  68                          */
  69                         continue;
  70                 }
  71
  72                 if (p2p->cfg->go_connected &&
  73                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  74                                            dev->info.p2p_device_addr)) {
  75                         /*
  76                          * We are connected as a client to a group in which the
  77                          * peer is the GO, so do not expire the peer entry.
  78                          */
  79                         os_get_reltime(&dev->last_seen);
  80                         continue;
  81                 }
  82
  83                 for (i = 0; i < p2p->num_groups; i++) {
  84                         if (p2p_group_is_client_connected(
  85                                     p2p->groups[i], dev->info.p2p_device_addr))
  86                                 break;
  87                 }
  88                 if (i < p2p->num_groups) {
  89                         /*
  90                          * The peer is connected as a client in a group where
  91                          * we are the GO, so do not expire the peer entry.
  92                          */
  93                         os_get_reltime(&dev->last_seen);
  94                         continue;
  95                 }
  96
  97                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  98                         MAC2STR(dev->info.p2p_device_addr));
  99                 dl_list_del(&dev->list);
 100                 p2p_device_free(p2p, dev);
 101         }
 102 }
 103
 104
 105 static const char * p2p_state_txt(int state)
 106 {
 107         switch (state) {
 108         case P2P_IDLE:
 109                 return "IDLE";
 110         case P2P_SEARCH:
 111                 return "SEARCH";
 112         case P2P_CONNECT:
 113                 return "CONNECT";
 114         case P2P_CONNECT_LISTEN:
 115                 return "CONNECT_LISTEN";
 116         case P2P_GO_NEG:
 117                 return "GO_NEG";
 118         case P2P_LISTEN_ONLY:
 119                 return "LISTEN_ONLY";
 120         case P2P_WAIT_PEER_CONNECT:
 121                 return "WAIT_PEER_CONNECT";
 122         case P2P_WAIT_PEER_IDLE:
 123                 return "WAIT_PEER_IDLE";
 124         case P2P_SD_DURING_FIND:
 125                 return "SD_DURING_FIND";
 126         case P2P_PROVISIONING:
 127                 return "PROVISIONING";
 128         case P2P_PD_DURING_FIND:
 129                 return "PD_DURING_FIND";
 130         case P2P_INVITE:
 131                 return "INVITE";
 132         case P2P_INVITE_LISTEN:
 133                 return "INVITE_LISTEN";
 134         default:
 135                 return "?";
 136         }
 137 }
 138
 139
 140 const char * p2p_get_state_txt(struct p2p_data *p2p)
 141 {
 142         return p2p_state_txt(p2p->state);
 143 }
 144
 145
 146 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 147 {
 148         return p2p ? p2p->p2ps_adv_list : NULL;
 149 }
 150
 151
 152 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 153 {
 154         if (p2p && intended_addr)
 155                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 156 }
 157
 158
 159 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 160 {
 161         struct p2p_device *dev = NULL;
 162
 163         if (!addr || !p2p)
 164                 return 0;
 165
 166         dev = p2p_get_device(p2p, addr);
 167         if (dev)
 168                 return dev->wps_prov_info;
 169         else
 170                 return 0;
 171 }
 172
 173
 174 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 175 {
 176         struct p2p_device *dev = NULL;
 177
 178         if (!addr || !p2p)
 179                 return;
 180
 181         dev = p2p_get_device(p2p, addr);
 182         if (dev)
 183                 dev->wps_prov_info = 0;
 184 }
 185
 186
 187 void p2p_set_state(struct p2p_data *p2p, int new_state)
 188 {
 189         p2p_dbg(p2p, "State %s -> %s",
 190                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 191         p2p->state = new_state;
 192
 193         if (new_state == P2P_IDLE && p2p->pending_channel) {
 194                 p2p_dbg(p2p, "Apply change in listen channel");
 195                 p2p->cfg->reg_class = p2p->pending_reg_class;
 196                 p2p->cfg->channel = p2p->pending_channel;
 197                 p2p->pending_reg_class = 0;
 198                 p2p->pending_channel = 0;
 199         }
 200 }
 201
 202
 203 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 204 {
 205         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 206                 p2p_state_txt(p2p->state), sec, usec);
 207         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 208         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 209 }
 210
 211
 212 void p2p_clear_timeout(struct p2p_data *p2p)
 213 {
 214         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 215         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 216 }
 217
 218
 219 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 220 {
 221         struct p2p_go_neg_results res;
 222         struct p2p_device *peer = p2p->go_neg_peer;
 223
 224         if (!peer)
 225                 return;
 226
 227         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 228         if (p2p->state != P2P_SEARCH) {
 229                 /*
 230                  * Clear timeouts related to GO Negotiation if no new p2p_find
 231                  * has been started.
 232                  */
 233                 p2p_clear_timeout(p2p);
 234                 p2p_set_state(p2p, P2P_IDLE);
 235         }
 236
 237         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 238         peer->wps_method = WPS_NOT_READY;
 239         peer->oob_pw_id = 0;
 240         wpabuf_free(peer->go_neg_conf);
 241         peer->go_neg_conf = NULL;
 242         p2p->go_neg_peer = NULL;
 243
 244         os_memset(&res, 0, sizeof(res));
 245         res.status = status;
 246         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 247         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 248         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 249 }
 250
 251
 252 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 253 {
 254         unsigned int r, tu;
 255         int freq;
 256         struct wpabuf *ies;
 257
 258         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 259                 p2p_state_txt(p2p->state));
 260
 261         if (p2p->pending_listen_freq) {
 262                 /* We have a pending p2p_listen request */
 263                 p2p_dbg(p2p, "p2p_listen command pending already");
 264                 return;
 265         }
 266
 267         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 268         if (freq < 0) {
 269                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 270                 return;
 271         }
 272
 273         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 274                 r = 0;
 275         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 276               p2p->min_disc_int) * 100;
 277         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 278                 tu = p2p->max_disc_tu;
 279         if (!dev_disc && tu < 100)
 280                 tu = 100; /* Need to wait in non-device discovery use cases */
 281         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 282                 tu = p2p->cfg->max_listen * 1000 / 1024;
 283
 284         if (tu == 0) {
 285                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 286                 p2p_set_timeout(p2p, 0, 0);
 287                 return;
 288         }
 289
 290         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 291         if (ies == NULL)
 292                 return;
 293
 294         p2p->pending_listen_freq = freq;
 295         p2p->pending_listen_sec = 0;
 296         p2p->pending_listen_usec = 1024 * tu;
 297
 298         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 299                     ies) < 0) {
 300                 p2p_dbg(p2p, "Failed to start listen mode");
 301                 p2p->pending_listen_freq = 0;
 302         }
 303         wpabuf_free(ies);
 304 }
 305
 306
 307 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 308 {
 309         int freq;
 310         struct wpabuf *ies;
 311
 312         p2p_dbg(p2p, "Going to listen(only) state");
 313
 314         if (p2p->pending_listen_freq) {
 315                 /* We have a pending p2p_listen request */
 316                 p2p_dbg(p2p, "p2p_listen command pending already");
 317                 return -1;
 318         }
 319
 320         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 321         if (freq < 0) {
 322                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 323                 return -1;
 324         }
 325
 326         p2p->pending_listen_sec = timeout / 1000;
 327         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 328
 329         if (p2p->p2p_scan_running) {
 330                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 331                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 332                         return 0;
 333                 }
 334                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 335                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 336                 return 0;
 337         }
 338
 339         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 340         if (ies == NULL)
 341                 return -1;
 342
 343         p2p->pending_listen_freq = freq;
 344
 345         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 346                 p2p_dbg(p2p, "Failed to start listen mode");
 347                 p2p->pending_listen_freq = 0;
 348                 wpabuf_free(ies);
 349                 return -1;
 350         }
 351         wpabuf_free(ies);
 352
 353         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 354
 355         return 0;
 356 }
 357
 358
 359 static void p2p_device_clear_reported(struct p2p_data *p2p)
 360 {
 361         struct p2p_device *dev;
 362         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 363                 dev->flags &= ~P2P_DEV_REPORTED;
 364                 dev->sd_reqs = 0;
 365         }
 366 }
 367
 368
 369 /**
 370  * p2p_get_device - Fetch a peer entry
 371  * @p2p: P2P module context from p2p_init()
 372  * @addr: P2P Device Address of the peer
 373  * Returns: Pointer to the device entry or %NULL if not found
 374  */
 375 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 376 {
 377         struct p2p_device *dev;
 378         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 379                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 380                         return dev;
 381         }
 382         return NULL;
 383 }
 384
 385
 386 /**
 387  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 388  * @p2p: P2P module context from p2p_init()
 389  * @addr: P2P Interface Address of the peer
 390  * Returns: Pointer to the device entry or %NULL if not found
 391  */
 392 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 393                                              const u8 *addr)
 394 {
 395         struct p2p_device *dev;
 396         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 397                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 398                         return dev;
 399         }
 400         return NULL;
 401 }
 402
 403
 404 /**
 405  * p2p_create_device - Create a peer entry
 406  * @p2p: P2P module context from p2p_init()
 407  * @addr: P2P Device Address of the peer
 408  * Returns: Pointer to the device entry or %NULL on failure
 409  *
 410  * If there is already an entry for the peer, it will be returned instead of
 411  * creating a new one.
 412  */
 413 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 414                                              const u8 *addr)
 415 {
 416         struct p2p_device *dev, *oldest = NULL;
 417         size_t count = 0;
 418
 419         dev = p2p_get_device(p2p, addr);
 420         if (dev)
 421                 return dev;
 422
 423         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 424                 count++;
 425                 if (oldest == NULL ||
 426                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 427                         oldest = dev;
 428         }
 429         if (count + 1 > p2p->cfg->max_peers && oldest) {
 430                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 431                 dl_list_del(&oldest->list);
 432                 p2p_device_free(p2p, oldest);
 433         }
 434
 435         dev = os_zalloc(sizeof(*dev));
 436         if (dev == NULL)
 437                 return NULL;
 438         dl_list_add(&p2p->devices, &dev->list);
 439         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 440
 441         return dev;
 442 }
 443
 444
 445 static void p2p_copy_client_info(struct p2p_device *dev,
 446                                  struct p2p_client_info *cli)
 447 {
 448         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 449         dev->info.device_name[cli->dev_name_len] = '\0';
 450         dev->info.dev_capab = cli->dev_capab;
 451         dev->info.config_methods = cli->config_methods;
 452         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 453         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 454         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 455                   dev->info.wps_sec_dev_type_list_len);
 456 }
 457
 458
 459 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 460                                  const u8 *go_interface_addr, int freq,
 461                                  const u8 *gi, size_t gi_len,
 462                                  struct os_reltime *rx_time)
 463 {
 464         struct p2p_group_info info;
 465         size_t c;
 466         struct p2p_device *dev;
 467
 468         if (gi == NULL)
 469                 return 0;
 470
 471         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 472                 return -1;
 473
 474         /*
 475          * Clear old data for this group; if the devices are still in the
 476          * group, the information will be restored in the loop following this.
 477          */
 478         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 479                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 480                               ETH_ALEN) == 0) {
 481                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 482                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 483                 }
 484         }
 485
 486         for (c = 0; c < info.num_clients; c++) {
 487                 struct p2p_client_info *cli = &info.client[c];
 488                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 489                               ETH_ALEN) == 0)
 490                         continue; /* ignore our own entry */
 491                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 492                 if (dev) {
 493                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 494                                           P2P_DEV_PROBE_REQ_ONLY)) {
 495                                 /*
 496                                  * Update information since we have not
 497                                  * received this directly from the client.
 498                                  */
 499                                 p2p_copy_client_info(dev, cli);
 500                         } else {
 501                                 /*
 502                                  * Need to update P2P Client Discoverability
 503                                  * flag since it is valid only in P2P Group
 504                                  * Info attribute.
 505                                  */
 506                                 dev->info.dev_capab &=
 507                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 508                                 dev->info.dev_capab |=
 509                                         cli->dev_capab &
 510                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 511                         }
 512                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 513                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 514                         }
 515                 } else {
 516                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 517                         if (dev == NULL)
 518                                 continue;
 519                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 520                         p2p_copy_client_info(dev, cli);
 521                         dev->oper_freq = freq;
 522                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 523                                             dev->info.p2p_device_addr,
 524                                             &dev->info, 1);
 525                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 526                 }
 527
 528                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 529                           ETH_ALEN);
 530                 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 531                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 532                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 533                           ETH_ALEN);
 534                 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
 535         }
 536
 537         return 0;
 538 }
 539
 540
 541 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 542                               int probe_req, const struct p2p_message *msg)
 543 {
 544         os_memcpy(dev->info.device_name, msg->device_name,
 545                   sizeof(dev->info.device_name));
 546
 547         if (msg->manufacturer &&
 548             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 549                 os_memset(dev->info.manufacturer, 0,
 550                           sizeof(dev->info.manufacturer));
 551                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 552                           msg->manufacturer_len);
 553         }
 554
 555         if (msg->model_name &&
 556             msg->model_name_len < sizeof(dev->info.model_name)) {
 557                 os_memset(dev->info.model_name, 0,
 558                           sizeof(dev->info.model_name));
 559                 os_memcpy(dev->info.model_name, msg->model_name,
 560                           msg->model_name_len);
 561         }
 562
 563         if (msg->model_number &&
 564             msg->model_number_len < sizeof(dev->info.model_number)) {
 565                 os_memset(dev->info.model_number, 0,
 566                           sizeof(dev->info.model_number));
 567                 os_memcpy(dev->info.model_number, msg->model_number,
 568                           msg->model_number_len);
 569         }
 570
 571         if (msg->serial_number &&
 572             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 573                 os_memset(dev->info.serial_number, 0,
 574                           sizeof(dev->info.serial_number));
 575                 os_memcpy(dev->info.serial_number, msg->serial_number,
 576                           msg->serial_number_len);
 577         }
 578
 579         if (msg->pri_dev_type)
 580                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 581                           sizeof(dev->info.pri_dev_type));
 582         else if (msg->wps_pri_dev_type)
 583                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 584                           sizeof(dev->info.pri_dev_type));
 585
 586         if (msg->wps_sec_dev_type_list) {
 587                 os_memcpy(dev->info.wps_sec_dev_type_list,
 588                           msg->wps_sec_dev_type_list,
 589                           msg->wps_sec_dev_type_list_len);
 590                 dev->info.wps_sec_dev_type_list_len =
 591                         msg->wps_sec_dev_type_list_len;
 592         }
 593
 594         if (msg->capability) {
 595                 /*
 596                  * P2P Client Discoverability bit is reserved in all frames
 597                  * that use this function, so do not change its value here.
 598                  */
 599                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 600                 dev->info.dev_capab |= msg->capability[0] &
 601                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 602                 dev->info.group_capab = msg->capability[1];
 603         }
 604
 605         if (msg->ext_listen_timing) {
 606                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 607                 dev->ext_listen_interval =
 608                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 609         }
 610
 611         if (!probe_req) {
 612                 u16 new_config_methods;
 613                 new_config_methods = msg->config_methods ?
 614                         msg->config_methods : msg->wps_config_methods;
 615                 if (new_config_methods &&
 616                     dev->info.config_methods != new_config_methods) {
 617                         p2p_dbg(p2p, "Update peer " MACSTR
 618                                 " config_methods 0x%x -> 0x%x",
 619                                 MAC2STR(dev->info.p2p_device_addr),
 620                                 dev->info.config_methods,
 621                                 new_config_methods);
 622                         dev->info.config_methods = new_config_methods;
 623                 }
 624         }
 625 }
 626
 627
 628 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 629                                          size_t ies_len)
 630 {
 631         const u8 *pos, *end;
 632         u8 id, len;
 633
 634         wpabuf_free(dev->info.vendor_elems);
 635         dev->info.vendor_elems = NULL;
 636
 637         end = ies + ies_len;
 638
 639         for (pos = ies; pos + 1 < end; pos += len) {
 640                 id = *pos++;
 641                 len = *pos++;
 642
 643                 if (pos + len > end)
 644                         break;
 645
 646                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 647                         continue;
 648
 649                 if (len >= 4) {
 650                         u32 type = WPA_GET_BE32(pos);
 651
 652                         if (type == WPA_IE_VENDOR_TYPE ||
 653                             type == WMM_IE_VENDOR_TYPE ||
 654                             type == WPS_IE_VENDOR_TYPE ||
 655                             type == P2P_IE_VENDOR_TYPE ||
 656                             type == WFD_IE_VENDOR_TYPE)
 657                                 continue;
 658                 }
 659
 660                 /* Unknown vendor element - make raw IE data available */
 661                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 662                         break;
 663                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 664         }
 665 }
 666
 667
 668 static int p2p_compare_wfd_info(struct p2p_device *dev,
 669                               const struct p2p_message *msg)
 670 {
 671         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 672                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 673                         return 1;
 674
 675                 return os_memcmp(dev->info.wfd_subelems->buf,
 676                                  msg->wfd_subelems->buf,
 677                                  dev->info.wfd_subelems->used);
 678         }
 679         if (dev->info.wfd_subelems || msg->wfd_subelems)
 680                 return 1;
 681
 682         return 0;
 683 }
 684
 685
 686 /**
 687  * p2p_add_device - Add peer entries based on scan results or P2P frames
 688  * @p2p: P2P module context from p2p_init()
 689  * @addr: Source address of Beacon or Probe Response frame (may be either
 690  *      P2P Device Address or P2P Interface Address)
 691  * @level: Signal level (signal strength of the received frame from the peer)
 692  * @freq: Frequency on which the Beacon or Probe Response frame was received
 693  * @rx_time: Time when the result was received
 694  * @ies: IEs from the Beacon or Probe Response frame
 695  * @ies_len: Length of ies buffer in octets
 696  * @scan_res: Whether this was based on scan results
 697  * Returns: 0 on success, -1 on failure
 698  *
 699  * If the scan result is for a GO, the clients in the group will also be added
 700  * to the peer table. This function can also be used with some other frames
 701  * like Provision Discovery Request that contains P2P Capability and P2P Device
 702  * Info attributes.
 703  */
 704 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 705                    struct os_reltime *rx_time, int level, const u8 *ies,
 706                    size_t ies_len, int scan_res)
 707 {
 708         struct p2p_device *dev;
 709         struct p2p_message msg;
 710         const u8 *p2p_dev_addr;
 711         int wfd_changed;
 712         int i;
 713         struct os_reltime time_now;
 714
 715         os_memset(&msg, 0, sizeof(msg));
 716         if (p2p_parse_ies(ies, ies_len, &msg)) {
 717                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 718                 p2p_parse_free(&msg);
 719                 return -1;
 720         }
 721
 722         if (msg.p2p_device_addr)
 723                 p2p_dev_addr = msg.p2p_device_addr;
 724         else if (msg.device_id)
 725                 p2p_dev_addr = msg.device_id;
 726         else {
 727                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 728                 p2p_parse_free(&msg);
 729                 return -1;
 730         }
 731
 732         if (!is_zero_ether_addr(p2p->peer_filter) &&
 733             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 734                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 735                         " due to peer filter", MAC2STR(p2p_dev_addr));
 736                 p2p_parse_free(&msg);
 737                 return 0;
 738         }
 739
 740         dev = p2p_create_device(p2p, p2p_dev_addr);
 741         if (dev == NULL) {
 742                 p2p_parse_free(&msg);
 743                 return -1;
 744         }
 745
 746         if (rx_time == NULL) {
 747                 os_get_reltime(&time_now);
 748                 rx_time = &time_now;
 749         }
 750
 751         /*
 752          * Update the device entry only if the new peer
 753          * entry is newer than the one previously stored, or if
 754          * the device was previously seen as a P2P Client in a group
 755          * and the new entry isn't older than a threshold.
 756          */
 757         if (dev->last_seen.sec > 0 &&
 758             os_reltime_before(rx_time, &dev->last_seen) &&
 759             (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
 760              os_reltime_expired(&dev->last_seen, rx_time,
 761                                 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
 762                 p2p_dbg(p2p,
 763                         "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
 764                         (unsigned int) rx_time->sec,
 765                         (unsigned int) rx_time->usec,
 766                         (unsigned int) dev->last_seen.sec,
 767                         (unsigned int) dev->last_seen.usec,
 768                         dev->flags);
 769                 p2p_parse_free(&msg);
 770                 return -1;
 771         }
 772
 773         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 774
 775         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
 776                         P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
 777
 778         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 779                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 780         if (msg.ssid &&
 781             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 782             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 783              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 784              != 0)) {
 785                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 786                 dev->oper_ssid_len = msg.ssid[1];
 787         }
 788
 789         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 790                 wpabuf_free(dev->info.p2ps_instance);
 791                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 792                         msg.adv_service_instance, msg.adv_service_instance_len);
 793         }
 794
 795         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 796             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 797                 int ds_freq;
 798                 if (*msg.ds_params == 14)
 799                         ds_freq = 2484;
 800                 else
 801                         ds_freq = 2407 + *msg.ds_params * 5;
 802                 if (freq != ds_freq) {
 803                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 804                                 freq, ds_freq);
 805                         freq = ds_freq;
 806                 }
 807         }
 808
 809         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 810                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 811                         MACSTR " %d -> %d MHz (DS param %d)",
 812                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 813                         freq, msg.ds_params ? *msg.ds_params : -1);
 814         }
 815         if (scan_res) {
 816                 dev->listen_freq = freq;
 817                 if (msg.group_info)
 818                         dev->oper_freq = freq;
 819         }
 820         dev->info.level = level;
 821
 822         p2p_copy_wps_info(p2p, dev, 0, &msg);
 823
 824         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 825                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 826                 dev->info.wps_vendor_ext[i] = NULL;
 827         }
 828
 829         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 830                 if (msg.wps_vendor_ext[i] == NULL)
 831                         break;
 832                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 833                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 834                 if (dev->info.wps_vendor_ext[i] == NULL)
 835                         break;
 836         }
 837
 838         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 839
 840         if (msg.wfd_subelems) {
 841                 wpabuf_free(dev->info.wfd_subelems);
 842                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 843         }
 844
 845         if (scan_res) {
 846                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 847                                       msg.group_info, msg.group_info_len,
 848                                       rx_time);
 849         }
 850
 851         p2p_parse_free(&msg);
 852
 853         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 854
 855         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 856             (!msg.adv_service_instance ||
 857              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 858                 return 0;
 859
 860         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 861                 freq, (unsigned int) rx_time->sec,
 862                 (unsigned int) rx_time->usec);
 863         if (dev->flags & P2P_DEV_USER_REJECTED) {
 864                 p2p_dbg(p2p, "Do not report rejected device");
 865                 return 0;
 866         }
 867
 868         if (dev->info.config_methods == 0 &&
 869             (freq == 2412 || freq == 2437 || freq == 2462)) {
 870                 /*
 871                  * If we have only seen a Beacon frame from a GO, we do not yet
 872                  * know what WPS config methods it supports. Since some
 873                  * applications use config_methods value from P2P-DEVICE-FOUND
 874                  * events, postpone reporting this peer until we've fully
 875                  * discovered its capabilities.
 876                  *
 877                  * At least for now, do this only if the peer was detected on
 878                  * one of the social channels since that peer can be easily be
 879                  * found again and there are no limitations of having to use
 880                  * passive scan on this channels, so this can be done through
 881                  * Probe Response frame that includes the config_methods
 882                  * information.
 883                  */
 884                 p2p_dbg(p2p, "Do not report peer " MACSTR
 885                         " with unknown config methods", MAC2STR(addr));
 886                 return 0;
 887         }
 888
 889         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 890                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 891         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 892
 893         if (msg.adv_service_instance)
 894                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 895
 896         return 0;
 897 }
 898
 899
 900 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 901 {
 902         int i;
 903
 904         if (p2p->go_neg_peer == dev) {
 905                 /*
 906                  * If GO Negotiation is in progress, report that it has failed.
 907                  */
 908                 p2p_go_neg_failed(p2p, -1);
 909         }
 910         if (p2p->invite_peer == dev)
 911                 p2p->invite_peer = NULL;
 912         if (p2p->sd_peer == dev)
 913                 p2p->sd_peer = NULL;
 914         if (p2p->pending_client_disc_go == dev)
 915                 p2p->pending_client_disc_go = NULL;
 916
 917         /* dev_lost() device, but only if it was previously dev_found() */
 918         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 919                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 920                                    dev->info.p2p_device_addr);
 921
 922         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 923                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 924                 dev->info.wps_vendor_ext[i] = NULL;
 925         }
 926
 927         wpabuf_free(dev->info.wfd_subelems);
 928         wpabuf_free(dev->info.vendor_elems);
 929         wpabuf_free(dev->go_neg_conf);
 930         wpabuf_free(dev->info.p2ps_instance);
 931
 932         os_free(dev);
 933 }
 934
 935
 936 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 937 {
 938         struct p2p_channels *c;
 939         struct p2p_reg_class *cla;
 940         size_t cl, ch;
 941         int found = 0;
 942         u8 reg_class;
 943         u8 channel;
 944         int freq;
 945
 946         c = &p2p->cfg->channels;
 947         for (cl = 0; cl < c->reg_classes; cl++) {
 948                 cla = &c->reg_class[cl];
 949                 if (cla->reg_class != p2p->last_prog_scan_class)
 950                         continue;
 951                 for (ch = 0; ch < cla->channels; ch++) {
 952                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 953                                 found = 1;
 954                                 break;
 955                         }
 956                 }
 957                 if (found)
 958                         break;
 959         }
 960
 961         if (!found) {
 962                 /* Start from beginning */
 963                 reg_class = c->reg_class[0].reg_class;
 964                 channel = c->reg_class[0].channel[0];
 965         } else {
 966                 /* Pick the next channel */
 967                 ch++;
 968                 if (ch == cla->channels) {
 969                         cl++;
 970                         if (cl == c->reg_classes)
 971                                 cl = 0;
 972                         ch = 0;
 973                 }
 974                 reg_class = c->reg_class[cl].reg_class;
 975                 channel = c->reg_class[cl].channel[ch];
 976         }
 977
 978         freq = p2p_channel_to_freq(reg_class, channel);
 979         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 980                 reg_class, channel, freq);
 981         p2p->last_prog_scan_class = reg_class;
 982         p2p->last_prog_scan_chan = channel;
 983
 984         if (freq == 2412 || freq == 2437 || freq == 2462)
 985                 return 0; /* No need to add social channels */
 986         return freq;
 987 }
 988
 989
 990 static void p2p_search(struct p2p_data *p2p)
 991 {
 992         int freq = 0;
 993         enum p2p_scan_type type;
 994         u16 pw_id = DEV_PW_DEFAULT;
 995         int res;
 996
 997         if (p2p->drv_in_listen) {
 998                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 999                 return;
1000         }
1001         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1002
1003         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1004             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1005                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1006                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1007         } else {
1008                 type = P2P_SCAN_SOCIAL;
1009                 p2p_dbg(p2p, "Starting search");
1010         }
1011
1012         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1013                                  p2p->num_req_dev_types, p2p->req_dev_types,
1014                                  p2p->find_dev_id, pw_id);
1015         if (res < 0) {
1016                 p2p_dbg(p2p, "Scan request schedule failed");
1017                 p2p_continue_find(p2p);
1018         }
1019 }
1020
1021
1022 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1023 {
1024         struct p2p_data *p2p = eloop_ctx;
1025         p2p_dbg(p2p, "Find timeout -> stop");
1026         p2p_stop_find(p2p);
1027 }
1028
1029
1030 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1031 {
1032         if (status != 0) {
1033                 p2p_dbg(p2p, "Scan request failed");
1034                 /* Do continue find even for the first p2p_find_scan */
1035                 p2p_continue_find(p2p);
1036         } else {
1037                 p2p_dbg(p2p, "Running p2p_scan");
1038                 p2p->p2p_scan_running = 1;
1039                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1040                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1041                                        p2p, NULL);
1042         }
1043 }
1044
1045
1046 static int p2p_run_after_scan(struct p2p_data *p2p)
1047 {
1048         struct p2p_device *dev;
1049         enum p2p_after_scan op;
1050
1051         if (p2p->after_scan_tx) {
1052                 p2p->after_scan_tx_in_progress = 1;
1053                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1054                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1055                                       p2p->after_scan_tx->freq,
1056                                       p2p->after_scan_tx->dst,
1057                                       p2p->after_scan_tx->src,
1058                                       p2p->after_scan_tx->bssid,
1059                                       (u8 *) (p2p->after_scan_tx + 1),
1060                                       p2p->after_scan_tx->len,
1061                                       p2p->after_scan_tx->wait_time);
1062                 os_free(p2p->after_scan_tx);
1063                 p2p->after_scan_tx = NULL;
1064                 return 1;
1065         }
1066
1067         op = p2p->start_after_scan;
1068         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1069         switch (op) {
1070         case P2P_AFTER_SCAN_NOTHING:
1071                 break;
1072         case P2P_AFTER_SCAN_LISTEN:
1073                 p2p_dbg(p2p, "Start previously requested Listen state");
1074                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1075                            p2p->pending_listen_usec / 1000);
1076                 return 1;
1077         case P2P_AFTER_SCAN_CONNECT:
1078                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1079                         MAC2STR(p2p->after_scan_peer));
1080                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1081                 if (dev == NULL) {
1082                         p2p_dbg(p2p, "Peer not known anymore");
1083                         break;
1084                 }
1085                 p2p_connect_send(p2p, dev);
1086                 return 1;
1087         }
1088
1089         return 0;
1090 }
1091
1092
1093 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1094 {
1095         struct p2p_data *p2p = eloop_ctx;
1096         int running;
1097         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1098         running = p2p->p2p_scan_running;
1099         /* Make sure we recover from missed scan results callback */
1100         p2p->p2p_scan_running = 0;
1101
1102         if (running)
1103                 p2p_run_after_scan(p2p);
1104 }
1105
1106
1107 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1108 {
1109         p2p->num_req_dev_types = 0;
1110         os_free(p2p->req_dev_types);
1111         p2p->req_dev_types = NULL;
1112 }
1113
1114
1115 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1116 {
1117         u8 buf[SHA256_MAC_LEN];
1118         char str_buf[256];
1119         const u8 *adv_array;
1120         size_t i, adv_len;
1121
1122         if (!str || !hash)
1123                 return 0;
1124
1125         if (!str[0]) {
1126                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1127                 return 1;
1128         }
1129
1130         adv_array = (u8 *) str_buf;
1131         adv_len = os_strlen(str);
1132         if (adv_len >= sizeof(str_buf))
1133                 return 0;
1134
1135         for (i = 0; i < adv_len; i++) {
1136                 if (str[i] >= 'A' && str[i] <= 'Z')
1137                         str_buf[i] = str[i] - 'A' + 'a';
1138                 else
1139                         str_buf[i] = str[i];
1140         }
1141
1142         if (sha256_vector(1, &adv_array, &adv_len, buf))
1143                 return 0;
1144
1145         os_memcpy(hash, buf, P2PS_HASH_LEN);
1146         return 1;
1147 }
1148
1149
1150 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1151              enum p2p_discovery_type type,
1152              unsigned int num_req_dev_types, const u8 *req_dev_types,
1153              const u8 *dev_id, unsigned int search_delay,
1154              u8 seek_count, const char **seek, int freq)
1155 {
1156         int res;
1157
1158         p2p_dbg(p2p, "Starting find (type=%d)", type);
1159         os_get_reltime(&p2p->find_start);
1160         if (p2p->p2p_scan_running) {
1161                 p2p_dbg(p2p, "p2p_scan is already running");
1162         }
1163
1164         p2p_free_req_dev_types(p2p);
1165         if (req_dev_types && num_req_dev_types) {
1166                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1167                                                WPS_DEV_TYPE_LEN);
1168                 if (p2p->req_dev_types == NULL)
1169                         return -1;
1170                 os_memcpy(p2p->req_dev_types, req_dev_types,
1171                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1172                 p2p->num_req_dev_types = num_req_dev_types;
1173         }
1174
1175         if (dev_id) {
1176                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1177                 p2p->find_dev_id = p2p->find_dev_id_buf;
1178         } else
1179                 p2p->find_dev_id = NULL;
1180
1181         if (seek_count == 0 || !seek) {
1182                 /* Not an ASP search */
1183                 p2p->p2ps_seek = 0;
1184         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1185                 /*
1186                  * An empty seek string means no hash values, but still an ASP
1187                  * search.
1188                  */
1189                 p2p_dbg(p2p, "ASP search");
1190                 p2p->p2ps_seek_count = 0;
1191                 p2p->p2ps_seek = 1;
1192         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1193                 u8 buf[P2PS_HASH_LEN];
1194                 int i, count = 0;
1195
1196                 for (i = 0; i < seek_count; i++) {
1197                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1198                                 continue;
1199
1200                         p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1201                                 seek[i], MAC2STR(buf));
1202                         os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1203                                   buf, P2PS_HASH_LEN);
1204                         count++;
1205                 }
1206
1207                 p2p->p2ps_seek_count = count;
1208                 p2p->p2ps_seek = 1;
1209         } else {
1210                 p2p->p2ps_seek_count = 0;
1211                 p2p->p2ps_seek = 1;
1212         }
1213
1214         /* Special case to perform wildcard search */
1215         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1216                 p2p->p2ps_seek_count = 1;
1217                 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1218                           P2PS_HASH_LEN);
1219         }
1220
1221         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1222         p2p_clear_timeout(p2p);
1223         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1224         p2p->find_type = type;
1225         p2p_device_clear_reported(p2p);
1226         p2p_set_state(p2p, P2P_SEARCH);
1227         p2p->search_delay = search_delay;
1228         p2p->in_search_delay = 0;
1229         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1230         p2p->last_p2p_find_timeout = timeout;
1231         if (timeout)
1232                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1233                                        p2p, NULL);
1234         switch (type) {
1235         case P2P_FIND_START_WITH_FULL:
1236                 if (freq > 0) {
1237                         /*
1238                          * Start with the specified channel and then move to
1239                          * social channels only scans.
1240                          */
1241                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1242                                                  P2P_SCAN_SPECIFIC, freq,
1243                                                  p2p->num_req_dev_types,
1244                                                  p2p->req_dev_types, dev_id,
1245                                                  DEV_PW_DEFAULT);
1246                         break;
1247                 }
1248                 /* fall through */
1249         case P2P_FIND_PROGRESSIVE:
1250                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1251                                          p2p->num_req_dev_types,
1252                                          p2p->req_dev_types, dev_id,
1253                                          DEV_PW_DEFAULT);
1254                 break;
1255         case P2P_FIND_ONLY_SOCIAL:
1256                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1257                                          p2p->num_req_dev_types,
1258                                          p2p->req_dev_types, dev_id,
1259                                          DEV_PW_DEFAULT);
1260                 break;
1261         default:
1262                 return -1;
1263         }
1264
1265         if (res != 0 && p2p->p2p_scan_running) {
1266                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1267                 /* wait for the previous p2p_scan to complete */
1268                 res = 0; /* do not report failure */
1269         } else if (res != 0) {
1270                 p2p_dbg(p2p, "Failed to start p2p_scan");
1271                 p2p_set_state(p2p, P2P_IDLE);
1272                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1273         }
1274
1275         return res;
1276 }
1277
1278
1279 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1280 {
1281         p2p_dbg(p2p, "Stopping find");
1282         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1283         p2p_clear_timeout(p2p);
1284         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1285                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1286
1287         p2p->p2ps_seek_count = 0;
1288
1289         p2p_set_state(p2p, P2P_IDLE);
1290         p2p_free_req_dev_types(p2p);
1291         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1292         if (p2p->go_neg_peer)
1293                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1294         p2p->go_neg_peer = NULL;
1295         p2p->sd_peer = NULL;
1296         p2p->invite_peer = NULL;
1297         p2p_stop_listen_for_freq(p2p, freq);
1298         p2p->send_action_in_progress = 0;
1299 }
1300
1301
1302 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1303 {
1304         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1305                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1306                 return;
1307         }
1308         if (p2p->in_listen) {
1309                 p2p->in_listen = 0;
1310                 p2p_clear_timeout(p2p);
1311         }
1312         if (p2p->drv_in_listen) {
1313                 /*
1314                  * The driver may not deliver callback to p2p_listen_end()
1315                  * when the operation gets canceled, so clear the internal
1316                  * variable that is tracking driver state.
1317                  */
1318                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1319                 p2p->drv_in_listen = 0;
1320         }
1321         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1322 }
1323
1324
1325 void p2p_stop_listen(struct p2p_data *p2p)
1326 {
1327         if (p2p->state != P2P_LISTEN_ONLY) {
1328                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1329                 return;
1330         }
1331
1332         p2p_stop_listen_for_freq(p2p, 0);
1333         p2p_set_state(p2p, P2P_IDLE);
1334 }
1335
1336
1337 void p2p_stop_find(struct p2p_data *p2p)
1338 {
1339         p2p->pending_listen_freq = 0;
1340         p2p_stop_find_for_freq(p2p, 0);
1341 }
1342
1343
1344 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1345                                     unsigned int force_freq,
1346                                     unsigned int pref_freq, int go)
1347 {
1348         u8 op_class, op_channel;
1349         unsigned int freq = force_freq ? force_freq : pref_freq;
1350
1351         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1352                 force_freq, pref_freq, go);
1353         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1354                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1355                 return -1;
1356         }
1357
1358         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1359             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1360                                           op_channel))) {
1361                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1362                         freq, op_class, op_channel);
1363                 return -1;
1364         }
1365
1366         p2p->op_reg_class = op_class;
1367         p2p->op_channel = op_channel;
1368
1369         if (force_freq) {
1370                 p2p->channels.reg_classes = 1;
1371                 p2p->channels.reg_class[0].channels = 1;
1372                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1373                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1374         } else {
1375                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1376                           sizeof(struct p2p_channels));
1377         }
1378
1379         return 0;
1380 }
1381
1382
1383 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1384 {
1385         u8 op_class, op_channel;
1386         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1387         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1388         const int op_classes_vht[] = { 128, 0 };
1389
1390         p2p_dbg(p2p, "Prepare channel best");
1391
1392         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1393             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1394             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1395             == 0) {
1396                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1397                 p2p->op_reg_class = op_class;
1398                 p2p->op_channel = op_channel;
1399         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1400                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1401                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1402                    == 0) {
1403                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1404                 p2p->op_reg_class = op_class;
1405                 p2p->op_channel = op_channel;
1406         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1407                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1408                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1409                                        &op_channel) == 0) {
1410                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1411                 p2p->op_reg_class = op_class;
1412                 p2p->op_channel = op_channel;
1413         } else if (p2p->cfg->num_pref_chan > 0 &&
1414                    p2p_channels_includes(&p2p->cfg->channels,
1415                                          p2p->cfg->pref_chan[0].op_class,
1416                                          p2p->cfg->pref_chan[0].chan)) {
1417                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1418                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1419                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1420         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1421                                       &p2p->op_reg_class, &p2p->op_channel) ==
1422                    0) {
1423                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1424                         p2p->op_reg_class, p2p->op_channel);
1425         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1426                                       &p2p->op_reg_class, &p2p->op_channel) ==
1427                    0) {
1428                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1429                         p2p->op_reg_class, p2p->op_channel);
1430         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1431                                       &p2p->op_reg_class, &p2p->op_channel) ==
1432                    0) {
1433                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1434                         p2p->op_reg_class, p2p->op_channel);
1435         } else if (p2p_channels_includes(&p2p->cfg->channels,
1436                                          p2p->cfg->op_reg_class,
1437                                          p2p->cfg->op_channel)) {
1438                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1439                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1440                 p2p->op_channel = p2p->cfg->op_channel;
1441         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1442                                              &p2p->op_reg_class,
1443                                              &p2p->op_channel) == 0) {
1444                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1445                         p2p->op_reg_class, p2p->op_channel);
1446         } else {
1447                 /* Select any random available channel from the first available
1448                  * operating class */
1449                 p2p_channel_select(&p2p->cfg->channels, NULL,
1450                                    &p2p->op_reg_class,
1451                                    &p2p->op_channel);
1452                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1453                         p2p->op_channel, p2p->op_reg_class);
1454         }
1455
1456         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1457                   sizeof(struct p2p_channels));
1458 }
1459
1460
1461 /**
1462  * p2p_prepare_channel - Select operating channel for GO Negotiation
1463  * @p2p: P2P module context from p2p_init()
1464  * @dev: Selected peer device
1465  * @force_freq: Forced frequency in MHz or 0 if not forced
1466  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1467  * @go: Whether the local end will be forced to be GO
1468  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1469  *
1470  * This function is used to do initial operating channel selection for GO
1471  * Negotiation prior to having received peer information. The selected channel
1472  * may be further optimized in p2p_reselect_channel() once the peer information
1473  * is available.
1474  */
1475 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1476                         unsigned int force_freq, unsigned int pref_freq, int go)
1477 {
1478         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1479                 force_freq, pref_freq, go);
1480         if (force_freq || pref_freq) {
1481                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1482                     0)
1483                         return -1;
1484         } else {
1485                 p2p_prepare_channel_best(p2p);
1486         }
1487         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1488         if (go)
1489                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1490         else if (!force_freq)
1491                 p2p_channels_union_inplace(&p2p->channels,
1492                                            &p2p->cfg->cli_channels);
1493         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1494
1495         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1496                 p2p->op_reg_class, p2p->op_channel,
1497                 force_freq ? " (forced)" : "");
1498
1499         if (force_freq)
1500                 dev->flags |= P2P_DEV_FORCE_FREQ;
1501         else
1502                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1503
1504         return 0;
1505 }
1506
1507
1508 static void p2p_set_dev_persistent(struct p2p_device *dev,
1509                                    int persistent_group)
1510 {
1511         switch (persistent_group) {
1512         case 0:
1513                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1514                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1515                 break;
1516         case 1:
1517                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1518                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1519                 break;
1520         case 2:
1521                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1522                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1523                 break;
1524         }
1525 }
1526
1527
1528 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1529                 enum p2p_wps_method wps_method,
1530                 int go_intent, const u8 *own_interface_addr,
1531                 unsigned int force_freq, int persistent_group,
1532                 const u8 *force_ssid, size_t force_ssid_len,
1533                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1534 {
1535         struct p2p_device *dev;
1536
1537         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1538                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1539                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1540                 "oob_pw_id=%u",
1541                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1542                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1543
1544         dev = p2p_get_device(p2p, peer_addr);
1545         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1546                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1547                         MAC2STR(peer_addr));
1548                 return -1;
1549         }
1550
1551         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1552                                 go_intent == 15) < 0)
1553                 return -1;
1554
1555         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1556                 if (!(dev->info.dev_capab &
1557                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1558                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1559                                 " that is in a group and is not discoverable",
1560                                 MAC2STR(peer_addr));
1561                         return -1;
1562                 }
1563                 if (dev->oper_freq <= 0) {
1564                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1565                                 " with incomplete information",
1566                                 MAC2STR(peer_addr));
1567                         return -1;
1568                 }
1569
1570                 /*
1571                  * First, try to connect directly. If the peer does not
1572                  * acknowledge frames, assume it is sleeping and use device
1573                  * discoverability via the GO at that point.
1574                  */
1575         }
1576
1577         p2p->ssid_set = 0;
1578         if (force_ssid) {
1579                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1580                                   force_ssid, force_ssid_len);
1581                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1582                 p2p->ssid_len = force_ssid_len;
1583                 p2p->ssid_set = 1;
1584         }
1585
1586         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1587         dev->flags &= ~P2P_DEV_USER_REJECTED;
1588         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1589         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1590         if (pd_before_go_neg)
1591                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1592         else {
1593                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1594                 /*
1595                  * Assign dialog token and tie breaker here to use the same
1596                  * values in each retry within the same GO Negotiation exchange.
1597                  */
1598                 dev->dialog_token++;
1599                 if (dev->dialog_token == 0)
1600                         dev->dialog_token = 1;
1601                 dev->tie_breaker = p2p->next_tie_breaker;
1602                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1603         }
1604         dev->connect_reqs = 0;
1605         dev->go_neg_req_sent = 0;
1606         dev->go_state = UNKNOWN_GO;
1607         p2p_set_dev_persistent(dev, persistent_group);
1608         p2p->go_intent = go_intent;
1609         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1610
1611         if (p2p->state != P2P_IDLE)
1612                 p2p_stop_find(p2p);
1613
1614         if (p2p->after_scan_tx) {
1615                 /*
1616                  * We need to drop the pending frame to avoid issues with the
1617                  * new GO Negotiation, e.g., when the pending frame was from a
1618                  * previous attempt at starting a GO Negotiation.
1619                  */
1620                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1621                 os_free(p2p->after_scan_tx);
1622                 p2p->after_scan_tx = NULL;
1623         }
1624
1625         dev->wps_method = wps_method;
1626         dev->oob_pw_id = oob_pw_id;
1627         dev->status = P2P_SC_SUCCESS;
1628
1629         if (p2p->p2p_scan_running) {
1630                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1631                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1632                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1633                 return 0;
1634         }
1635         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1636
1637         return p2p_connect_send(p2p, dev);
1638 }
1639
1640
1641 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1642                   enum p2p_wps_method wps_method,
1643                   int go_intent, const u8 *own_interface_addr,
1644                   unsigned int force_freq, int persistent_group,
1645                   const u8 *force_ssid, size_t force_ssid_len,
1646                   unsigned int pref_freq, u16 oob_pw_id)
1647 {
1648         struct p2p_device *dev;
1649
1650         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1651                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1652                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1653                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1654                 wps_method, persistent_group, oob_pw_id);
1655
1656         dev = p2p_get_device(p2p, peer_addr);
1657         if (dev == NULL) {
1658                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1659                         MAC2STR(peer_addr));
1660                 return -1;
1661         }
1662
1663         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1664                                 15) < 0)
1665                 return -1;
1666
1667         p2p->ssid_set = 0;
1668         if (force_ssid) {
1669                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1670                                   force_ssid, force_ssid_len);
1671                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1672                 p2p->ssid_len = force_ssid_len;
1673                 p2p->ssid_set = 1;
1674         }
1675
1676         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1677         dev->flags &= ~P2P_DEV_USER_REJECTED;
1678         dev->go_neg_req_sent = 0;
1679         dev->go_state = UNKNOWN_GO;
1680         p2p_set_dev_persistent(dev, persistent_group);
1681         p2p->go_intent = go_intent;
1682         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1683
1684         dev->wps_method = wps_method;
1685         dev->oob_pw_id = oob_pw_id;
1686         dev->status = P2P_SC_SUCCESS;
1687
1688         return 0;
1689 }
1690
1691
1692 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1693                       struct p2p_device *dev, struct p2p_message *msg)
1694 {
1695         os_get_reltime(&dev->last_seen);
1696
1697         p2p_copy_wps_info(p2p, dev, 0, msg);
1698
1699         if (msg->listen_channel) {
1700                 int freq;
1701                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1702                                            msg->listen_channel[4]);
1703                 if (freq < 0) {
1704                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1705                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1706                                 msg->listen_channel[0],
1707                                 msg->listen_channel[1],
1708                                 msg->listen_channel[2],
1709                                 msg->listen_channel[3],
1710                                 msg->listen_channel[4]);
1711                 } else {
1712                         p2p_dbg(p2p, "Update peer " MACSTR
1713                                 " Listen channel: %u -> %u MHz",
1714                                 MAC2STR(dev->info.p2p_device_addr),
1715                                 dev->listen_freq, freq);
1716                         dev->listen_freq = freq;
1717                 }
1718         }
1719
1720         if (msg->wfd_subelems) {
1721                 wpabuf_free(dev->info.wfd_subelems);
1722                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1723         }
1724
1725         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1726                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1727                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1728         } else {
1729                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1730                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1731                         "listen_freq=%d",
1732                         MAC2STR(dev->info.p2p_device_addr),
1733                         dev->info.dev_capab, dev->info.group_capab,
1734                         dev->info.device_name, dev->listen_freq);
1735         }
1736
1737         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1738
1739         if (dev->flags & P2P_DEV_USER_REJECTED) {
1740                 p2p_dbg(p2p, "Do not report rejected device");
1741                 return;
1742         }
1743
1744         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1745                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1746         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1747 }
1748
1749
1750 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1751 {
1752         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1753         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1754         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1755                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1756         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1757 }
1758
1759
1760 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1761 {
1762         if (p2p->ssid_set) {
1763                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1764                 params->ssid_len = p2p->ssid_len;
1765         } else {
1766                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1767         }
1768         p2p->ssid_set = 0;
1769
1770         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1771         return 0;
1772 }
1773
1774
1775 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1776 {
1777         struct p2p_go_neg_results res;
1778         int go = peer->go_state == LOCAL_GO;
1779         struct p2p_channels intersection;
1780
1781         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1782                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1783
1784         os_memset(&res, 0, sizeof(res));
1785         res.role_go = go;
1786         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1787         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1788         res.wps_method = peer->wps_method;
1789         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1790                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1791                         res.persistent_group = 2;
1792                 else
1793                         res.persistent_group = 1;
1794         }
1795
1796         if (go) {
1797                 /* Setup AP mode for WPS provisioning */
1798                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1799                                                p2p->op_channel);
1800                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1801                 res.ssid_len = p2p->ssid_len;
1802                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1803         } else {
1804                 res.freq = peer->oper_freq;
1805                 if (p2p->ssid_len) {
1806                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1807                         res.ssid_len = p2p->ssid_len;
1808                 }
1809         }
1810
1811         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1812         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1813         p2p_channels_intersect(&p2p->channels, &peer->channels,
1814                                &intersection);
1815         if (go) {
1816                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1817                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1818                                   &intersection);
1819         }
1820
1821         p2p_channels_to_freqs(&intersection, res.freq_list,
1822                               P2P_MAX_CHANNELS);
1823
1824         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1825
1826         p2p_clear_timeout(p2p);
1827         p2p->ssid_set = 0;
1828         peer->go_neg_req_sent = 0;
1829         peer->wps_method = WPS_NOT_READY;
1830         peer->oob_pw_id = 0;
1831         wpabuf_free(peer->go_neg_conf);
1832         peer->go_neg_conf = NULL;
1833
1834         p2p_set_state(p2p, P2P_PROVISIONING);
1835         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1836 }
1837
1838
1839 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1840                               const u8 *data, size_t len, int rx_freq)
1841 {
1842         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1843         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1844
1845         if (len < 1)
1846                 return;
1847
1848         switch (data[0]) {
1849         case P2P_GO_NEG_REQ:
1850                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1851                 break;
1852         case P2P_GO_NEG_RESP:
1853                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1854                 break;
1855         case P2P_GO_NEG_CONF:
1856                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1857                 break;
1858         case P2P_INVITATION_REQ:
1859                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1860                                            rx_freq);
1861                 break;
1862         case P2P_INVITATION_RESP:
1863                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1864                 break;
1865         case P2P_PROV_DISC_REQ:
1866                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1867                 break;
1868         case P2P_PROV_DISC_RESP:
1869                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1870                 break;
1871         case P2P_DEV_DISC_REQ:
1872                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1873                 break;
1874         case P2P_DEV_DISC_RESP:
1875                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1876                 break;
1877         default:
1878                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1879                         data[0]);
1880                 break;
1881         }
1882 }
1883
1884
1885 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1886                                  const u8 *sa, const u8 *bssid, const u8 *data,
1887                                  size_t len, int freq)
1888 {
1889         if (len < 1)
1890                 return;
1891
1892         switch (data[0]) {
1893         case WLAN_PA_VENDOR_SPECIFIC:
1894                 data++;
1895                 len--;
1896                 if (len < 4)
1897                         return;
1898                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1899                         return;
1900
1901                 data += 4;
1902                 len -= 4;
1903
1904                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1905                 break;
1906         case WLAN_PA_GAS_INITIAL_REQ:
1907                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1908                 break;
1909         case WLAN_PA_GAS_INITIAL_RESP:
1910                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1911                 break;
1912         case WLAN_PA_GAS_COMEBACK_REQ:
1913                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1914                 break;
1915         case WLAN_PA_GAS_COMEBACK_RESP:
1916                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1917                 break;
1918         }
1919 }
1920
1921
1922 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1923                    const u8 *bssid, u8 category,
1924                    const u8 *data, size_t len, int freq)
1925 {
1926         if (category == WLAN_ACTION_PUBLIC) {
1927                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1928                 return;
1929         }
1930
1931         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1932                 return;
1933
1934         if (len < 4)
1935                 return;
1936
1937         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1938                 return;
1939         data += 4;
1940         len -= 4;
1941
1942         /* P2P action frame */
1943         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1944         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1945
1946         if (len < 1)
1947                 return;
1948         switch (data[0]) {
1949         case P2P_NOA:
1950                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1951                 /* TODO */
1952                 break;
1953         case P2P_PRESENCE_REQ:
1954                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1955                 break;
1956         case P2P_PRESENCE_RESP:
1957                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1958                 break;
1959         case P2P_GO_DISC_REQ:
1960                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1961                 break;
1962         default:
1963                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1964                 break;
1965         }
1966 }
1967
1968
1969 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1970 {
1971         struct p2p_data *p2p = eloop_ctx;
1972         if (p2p->go_neg_peer == NULL)
1973                 return;
1974         if (p2p->pending_listen_freq) {
1975                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1976                 p2p->pending_listen_freq = 0;
1977         }
1978         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1979         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1980         /*
1981          * Set new timeout to make sure a previously set one does not expire
1982          * too quickly while waiting for the GO Negotiation to complete.
1983          */
1984         p2p_set_timeout(p2p, 0, 500000);
1985         p2p_connect_send(p2p, p2p->go_neg_peer);
1986 }
1987
1988
1989 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1990 {
1991         struct p2p_data *p2p = eloop_ctx;
1992         if (p2p->invite_peer == NULL)
1993                 return;
1994         if (p2p->pending_listen_freq) {
1995                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1996                 p2p->pending_listen_freq = 0;
1997         }
1998         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1999         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2000                         p2p->invite_dev_pw_id);
2001 }
2002
2003
2004 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2005                                        const u8 *ie, size_t ie_len)
2006 {
2007         struct p2p_message msg;
2008         struct p2p_device *dev;
2009
2010         os_memset(&msg, 0, sizeof(msg));
2011         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2012         {
2013                 p2p_parse_free(&msg);
2014                 return; /* not a P2P probe */
2015         }
2016
2017         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2018             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2019             != 0) {
2020                 /* The Probe Request is not part of P2P Device Discovery. It is
2021                  * not known whether the source address of the frame is the P2P
2022                  * Device Address or P2P Interface Address. Do not add a new
2023                  * peer entry based on this frames.
2024                  */
2025                 p2p_parse_free(&msg);
2026                 return;
2027         }
2028
2029         dev = p2p_get_device(p2p, addr);
2030         if (dev) {
2031                 if (dev->country[0] == 0 && msg.listen_channel)
2032                         os_memcpy(dev->country, msg.listen_channel, 3);
2033                 os_get_reltime(&dev->last_seen);
2034                 p2p_parse_free(&msg);
2035                 return; /* already known */
2036         }
2037
2038         dev = p2p_create_device(p2p, addr);
2039         if (dev == NULL) {
2040                 p2p_parse_free(&msg);
2041                 return;
2042         }
2043
2044         os_get_reltime(&dev->last_seen);
2045         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2046
2047         if (msg.listen_channel) {
2048                 os_memcpy(dev->country, msg.listen_channel, 3);
2049                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2050                                                        msg.listen_channel[4]);
2051         }
2052
2053         p2p_copy_wps_info(p2p, dev, 1, &msg);
2054
2055         if (msg.wfd_subelems) {
2056                 wpabuf_free(dev->info.wfd_subelems);
2057                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2058         }
2059
2060         p2p_parse_free(&msg);
2061
2062         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2063                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2064                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2065                 dev->info.group_capab, dev->info.device_name,
2066                 dev->listen_freq);
2067 }
2068
2069
2070 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2071                                                 const u8 *addr,
2072                                                 struct p2p_message *msg)
2073 {
2074         struct p2p_device *dev;
2075
2076         dev = p2p_get_device(p2p, addr);
2077         if (dev) {
2078                 os_get_reltime(&dev->last_seen);
2079                 return dev; /* already known */
2080         }
2081
2082         dev = p2p_create_device(p2p, addr);
2083         if (dev == NULL)
2084                 return NULL;
2085
2086         p2p_add_dev_info(p2p, addr, dev, msg);
2087
2088         return dev;
2089 }
2090
2091
2092 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2093 {
2094         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2095                 return 1;
2096         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2097             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2098             WPA_GET_BE16(&req_dev_type[6]) == 0)
2099                 return 1; /* Category match with wildcard OUI/sub-category */
2100         return 0;
2101 }
2102
2103
2104 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2105                         size_t num_req_dev_type)
2106 {
2107         size_t i;
2108         for (i = 0; i < num_req_dev_type; i++) {
2109                 if (dev_type_match(dev_type, req_dev_type[i]))
2110                         return 1;
2111         }
2112         return 0;
2113 }
2114
2115
2116 /**
2117  * p2p_match_dev_type - Match local device type with requested type
2118  * @p2p: P2P module context from p2p_init()
2119  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2120  * Returns: 1 on match, 0 on mismatch
2121  *
2122  * This function can be used to match the Requested Device Type attribute in
2123  * WPS IE with the local device types for deciding whether to reply to a Probe
2124  * Request frame.
2125  */
2126 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2127 {
2128         struct wps_parse_attr attr;
2129         size_t i;
2130
2131         if (wps_parse_msg(wps, &attr))
2132                 return 1; /* assume no Requested Device Type attributes */
2133
2134         if (attr.num_req_dev_type == 0)
2135                 return 1; /* no Requested Device Type attributes -> match */
2136
2137         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2138                                 attr.num_req_dev_type))
2139                 return 1; /* Own Primary Device Type matches */
2140
2141         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2142                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2143                                         attr.req_dev_type,
2144                                         attr.num_req_dev_type))
2145                         return 1; /* Own Secondary Device Type matches */
2146         }
2147
2148         /* No matching device type found */
2149         return 0;
2150 }
2151
2152
2153 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2154                                          const u8 *query_hash,
2155                                          u8 query_count)
2156 {
2157         struct wpabuf *buf;
2158         u8 *len;
2159         int pw_id = -1;
2160         size_t extra = 0;
2161
2162 #ifdef CONFIG_WIFI_DISPLAY
2163         if (p2p->wfd_ie_probe_resp)
2164                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2165 #endif /* CONFIG_WIFI_DISPLAY */
2166
2167         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2168                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2169
2170         if (query_count)
2171                 extra += MAX_SVC_ADV_IE_LEN;
2172
2173         buf = wpabuf_alloc(1000 + extra);
2174         if (buf == NULL)
2175                 return NULL;
2176
2177         if (p2p->go_neg_peer) {
2178                 /* Advertise immediate availability of WPS credential */
2179                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2180         }
2181
2182         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2183                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2184                 wpabuf_free(buf);
2185                 return NULL;
2186         }
2187
2188 #ifdef CONFIG_WIFI_DISPLAY
2189         if (p2p->wfd_ie_probe_resp)
2190                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2191 #endif /* CONFIG_WIFI_DISPLAY */
2192
2193         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2194                 wpabuf_put_buf(buf,
2195                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2196
2197         /* P2P IE */
2198         len = p2p_buf_add_ie_hdr(buf);
2199         p2p_buf_add_capability(buf, p2p->dev_capab &
2200                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2201         if (p2p->ext_listen_interval)
2202                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2203                                               p2p->ext_listen_interval);
2204         p2p_buf_add_device_info(buf, p2p, NULL);
2205         p2p_buf_update_ie_hdr(buf, len);
2206
2207         if (query_count) {
2208                 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2209                                              p2p->p2ps_adv_list);
2210         }
2211
2212         return buf;
2213 }
2214
2215
2216 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2217 {
2218         struct p2ps_advertisement *adv_data;
2219         int any_wfa;
2220
2221         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2222
2223         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2224         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2225
2226         adv_data = p2p->p2ps_adv_list;
2227         while (adv_data) {
2228                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2229                         return 1; /* exact hash match */
2230                 if (any_wfa &&
2231                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2232                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2233                         return 1; /* WFA service match */
2234                 adv_data = adv_data->next;
2235         }
2236
2237         return 0;
2238 }
2239
2240
2241 static enum p2p_probe_req_status
2242 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2243                 const u8 *bssid, const u8 *ie, size_t ie_len,
2244                 unsigned int rx_freq)
2245 {
2246         struct ieee802_11_elems elems;
2247         struct wpabuf *buf;
2248         struct ieee80211_mgmt *resp;
2249         struct p2p_message msg;
2250         struct wpabuf *ies;
2251         u8 channel, op_class;
2252
2253         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2254             ParseFailed) {
2255                 /* Ignore invalid Probe Request frames */
2256                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2257                 return P2P_PREQ_MALFORMED;
2258         }
2259
2260         if (elems.p2p == NULL) {
2261                 /* not a P2P probe - ignore it */
2262                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2263                 return P2P_PREQ_NOT_P2P;
2264         }
2265
2266         if (dst && !is_broadcast_ether_addr(dst) &&
2267             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2268                 /* Not sent to the broadcast address or our P2P Device Address
2269                  */
2270                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2271                         MAC2STR(dst));
2272                 return P2P_PREQ_NOT_PROCESSED;
2273         }
2274
2275         if (bssid && !is_broadcast_ether_addr(bssid)) {
2276                 /* Not sent to the Wildcard BSSID */
2277                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2278                         MAC2STR(bssid));
2279                 return P2P_PREQ_NOT_PROCESSED;
2280         }
2281
2282         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2283             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2284             0) {
2285                 /* not using P2P Wildcard SSID - ignore */
2286                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2287                 return P2P_PREQ_NOT_PROCESSED;
2288         }
2289
2290         if (supp_rates_11b_only(&elems)) {
2291                 /* Indicates support for 11b rates only */
2292                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2293                 return P2P_PREQ_NOT_P2P;
2294         }
2295
2296         os_memset(&msg, 0, sizeof(msg));
2297         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2298                 /* Could not parse P2P attributes */
2299                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2300                 return P2P_PREQ_NOT_P2P;
2301         }
2302
2303         if (msg.service_hash && msg.service_hash_count) {
2304                 const u8 *hash = msg.service_hash;
2305                 u8 i;
2306                 int p2ps_svc_found = 0;
2307
2308                 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz",
2309                         p2p->in_listen, p2p->drv_in_listen, rx_freq,
2310                         p2p->cfg->channel, p2p->pending_listen_freq);
2311
2312                 if (!p2p->in_listen && !p2p->drv_in_listen &&
2313                     p2p->pending_listen_freq && rx_freq &&
2314                     rx_freq != p2p->pending_listen_freq) {
2315                         p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz",
2316                                 rx_freq, p2p->pending_listen_freq);
2317                         p2p_parse_free(&msg);
2318                         return P2P_PREQ_NOT_LISTEN;
2319                 }
2320
2321                 for (i = 0; i < msg.service_hash_count; i++) {
2322                         if (p2p_service_find_asp(p2p, hash)) {
2323                                 p2p_dbg(p2p, "Service Hash match found: "
2324                                         MACSTR, MAC2STR(hash));
2325                                 p2ps_svc_found = 1;
2326                                 break;
2327                         }
2328                         hash += P2PS_HASH_LEN;
2329                 }
2330
2331                 /* Probed hash unknown */
2332                 if (!p2ps_svc_found) {
2333                         p2p_dbg(p2p, "No Service Hash match found");
2334                         p2p_parse_free(&msg);
2335                         return P2P_PREQ_NOT_PROCESSED;
2336                 }
2337         } else {
2338                 /* This is not a P2PS Probe Request */
2339                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2340
2341                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2342                         /* not in Listen state - ignore Probe Request */
2343                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2344                                 p2p->in_listen, p2p->drv_in_listen);
2345                         p2p_parse_free(&msg);
2346                         return P2P_PREQ_NOT_LISTEN;
2347                 }
2348         }
2349
2350         if (msg.device_id &&
2351             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2352                 /* Device ID did not match */
2353                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2354                         MAC2STR(msg.device_id));
2355                 p2p_parse_free(&msg);
2356                 return P2P_PREQ_NOT_PROCESSED;
2357         }
2358
2359         /* Check Requested Device Type match */
2360         if (msg.wps_attributes &&
2361             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2362                 /* No match with Requested Device Type */
2363                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2364                 p2p_parse_free(&msg);
2365                 return P2P_PREQ_NOT_PROCESSED;
2366         }
2367
2368         if (!p2p->cfg->send_probe_resp) {
2369                 /* Response generated elsewhere */
2370                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2371                 p2p_parse_free(&msg);
2372                 return P2P_PREQ_NOT_PROCESSED;
2373         }
2374
2375         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2376
2377         /*
2378          * We do not really have a specific BSS that this frame is advertising,
2379          * so build a frame that has some information in valid format. This is
2380          * really only used for discovery purposes, not to learn exact BSS
2381          * parameters.
2382          */
2383         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2384                                        msg.service_hash_count);
2385         p2p_parse_free(&msg);
2386         if (ies == NULL)
2387                 return P2P_PREQ_NOT_PROCESSED;
2388
2389         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2390         if (buf == NULL) {
2391                 wpabuf_free(ies);
2392                 return P2P_PREQ_NOT_PROCESSED;
2393         }
2394
2395         resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2396                                         u.probe_resp.variable));
2397
2398         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2399                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2400         os_memcpy(resp->da, addr, ETH_ALEN);
2401         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2402         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2403         resp->u.probe_resp.beacon_int = host_to_le16(100);
2404         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2405         resp->u.probe_resp.capab_info =
2406                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2407                              WLAN_CAPABILITY_PRIVACY |
2408                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2409
2410         wpabuf_put_u8(buf, WLAN_EID_SSID);
2411         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2412         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2413
2414         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2415         wpabuf_put_u8(buf, 8);
2416         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2417         wpabuf_put_u8(buf, 90 / 5);
2418         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2419         wpabuf_put_u8(buf, 180 / 5);
2420         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2421         wpabuf_put_u8(buf, 360 / 5);
2422         wpabuf_put_u8(buf, 480 / 5);
2423         wpabuf_put_u8(buf, 540 / 5);
2424
2425         if (!rx_freq) {
2426                 channel = p2p->cfg->channel;
2427         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2428                 wpabuf_free(ies);
2429                 wpabuf_free(buf);
2430                 return P2P_PREQ_NOT_PROCESSED;
2431         }
2432
2433         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2434         wpabuf_put_u8(buf, 1);
2435         wpabuf_put_u8(buf, channel);
2436
2437         wpabuf_put_buf(buf, ies);
2438         wpabuf_free(ies);
2439
2440         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2441
2442         wpabuf_free(buf);
2443
2444         return P2P_PREQ_PROCESSED;
2445 }
2446
2447
2448 enum p2p_probe_req_status
2449 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2450                  const u8 *bssid, const u8 *ie, size_t ie_len,
2451                  unsigned int rx_freq)
2452 {
2453         enum p2p_probe_req_status res;
2454
2455         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2456
2457         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2458         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2459                 return res;
2460
2461         /*
2462          * Activate a pending GO Negotiation/Invite flow if a received Probe
2463          * Request frame is from an expected peer. Some devices may share the
2464          * same address for P2P and non-P2P STA running simultaneously. The
2465          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2466          * return values verified above ensure we are handling a Probe Request
2467          * frame from a P2P peer.
2468          */
2469         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2470             p2p->go_neg_peer &&
2471             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2472             == 0 &&
2473             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2474                 /* Received a Probe Request from GO Negotiation peer */
2475                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2476                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2477                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2478                 return res;
2479         }
2480
2481         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2482             p2p->invite_peer &&
2483             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2484             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2485             == 0) {
2486                 /* Received a Probe Request from Invite peer */
2487                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2488                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2489                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2490                 return res;
2491         }
2492
2493         return res;
2494 }
2495
2496
2497 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2498                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2499 {
2500         struct wpabuf *tmp;
2501         u8 *lpos;
2502         size_t tmplen;
2503         int res;
2504         u8 group_capab;
2505         struct p2p_message msg;
2506
2507         if (p2p_ie == NULL)
2508                 return 0; /* WLAN AP is not a P2P manager */
2509
2510         os_memset(&msg, 0, sizeof(msg));
2511         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2512                 return 0;
2513
2514         p2p_dbg(p2p, "BSS P2P manageability %s",
2515                 msg.manageability ? "enabled" : "disabled");
2516
2517         if (!msg.manageability)
2518                 return 0;
2519
2520         /*
2521          * (Re)Association Request - P2P IE
2522          * P2P Capability attribute (shall be present)
2523          * P2P Interface attribute (present if concurrent device and
2524          *      P2P Management is enabled)
2525          */
2526         tmp = wpabuf_alloc(200);
2527         if (tmp == NULL)
2528                 return -1;
2529
2530         lpos = p2p_buf_add_ie_hdr(tmp);
2531         group_capab = 0;
2532         if (p2p->num_groups > 0) {
2533                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2534                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2535                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2536                     p2p->cross_connect)
2537                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2538         }
2539         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2540         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2541             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2542                 p2p_buf_add_p2p_interface(tmp, p2p);
2543         p2p_buf_update_ie_hdr(tmp, lpos);
2544
2545         tmplen = wpabuf_len(tmp);
2546         if (tmplen > len)
2547                 res = -1;
2548         else {
2549                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2550                 res = tmplen;
2551         }
2552         wpabuf_free(tmp);
2553
2554         return res;
2555 }
2556
2557
2558 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2559                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2560 {
2561         struct wpabuf *tmp;
2562         u8 *lpos;
2563         struct p2p_device *peer;
2564         size_t tmplen;
2565         int res;
2566         size_t extra = 0;
2567
2568         if (!p2p_group)
2569                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2570
2571 #ifdef CONFIG_WIFI_DISPLAY
2572         if (p2p->wfd_ie_assoc_req)
2573                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2574 #endif /* CONFIG_WIFI_DISPLAY */
2575
2576         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2577                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2578
2579         /*
2580          * (Re)Association Request - P2P IE
2581          * P2P Capability attribute (shall be present)
2582          * Extended Listen Timing (may be present)
2583          * P2P Device Info attribute (shall be present)
2584          */
2585         tmp = wpabuf_alloc(200 + extra);
2586         if (tmp == NULL)
2587                 return -1;
2588
2589 #ifdef CONFIG_WIFI_DISPLAY
2590         if (p2p->wfd_ie_assoc_req)
2591                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2592 #endif /* CONFIG_WIFI_DISPLAY */
2593
2594         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2595                 wpabuf_put_buf(tmp,
2596                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2597
2598         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2599
2600         lpos = p2p_buf_add_ie_hdr(tmp);
2601         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2602         if (p2p->ext_listen_interval)
2603                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2604                                               p2p->ext_listen_interval);
2605         p2p_buf_add_device_info(tmp, p2p, peer);
2606         p2p_buf_update_ie_hdr(tmp, lpos);
2607
2608         tmplen = wpabuf_len(tmp);
2609         if (tmplen > len)
2610                 res = -1;
2611         else {
2612                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2613                 res = tmplen;
2614         }
2615         wpabuf_free(tmp);
2616
2617         return res;
2618 }
2619
2620
2621 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2622 {
2623         struct wpabuf *p2p_ie;
2624         int ret;
2625
2626         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2627         if (p2p_ie == NULL)
2628                 return 0;
2629
2630         ret = p2p_attr_text(p2p_ie, buf, end);
2631         wpabuf_free(p2p_ie);
2632         return ret;
2633 }
2634
2635
2636 struct p2ps_advertisement *
2637 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2638 {
2639         struct p2ps_advertisement *adv_data;
2640
2641         if (!p2p)
2642                 return NULL;
2643
2644         adv_data = p2p->p2ps_adv_list;
2645         while (adv_data) {
2646                 if (adv_data->id == adv_id)
2647                         return adv_data;
2648                 adv_data = adv_data->next;
2649         }
2650
2651         return NULL;
2652 }
2653
2654
2655 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2656 {
2657         struct p2ps_advertisement *adv_data;
2658         struct p2ps_advertisement **prior;
2659
2660         if (!p2p)
2661                 return -1;
2662
2663         adv_data = p2p->p2ps_adv_list;
2664         prior = &p2p->p2ps_adv_list;
2665         while (adv_data) {
2666                 if (adv_data->id == adv_id) {
2667                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2668                         *prior = adv_data->next;
2669                         os_free(adv_data);
2670                         return 0;
2671                 }
2672                 prior = &adv_data->next;
2673                 adv_data = adv_data->next;
2674         }
2675
2676         return -1;
2677 }
2678
2679
2680 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2681                         const char *adv_str, u8 svc_state, u16 config_methods,
2682                         const char *svc_info, const u8 *cpt_priority)
2683 {
2684         struct p2ps_advertisement *adv_data, *tmp, **prev;
2685         u8 buf[P2PS_HASH_LEN];
2686         size_t adv_data_len, adv_len, info_len = 0;
2687         int i;
2688
2689         if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2690                 return -1;
2691
2692         if (!(config_methods & p2p->cfg->config_methods)) {
2693                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2694                         config_methods, p2p->cfg->config_methods);
2695                 return -1;
2696         }
2697
2698         if (!p2ps_gen_hash(p2p, adv_str, buf))
2699                 return -1;
2700
2701         if (svc_info)
2702                 info_len = os_strlen(svc_info);
2703         adv_len = os_strlen(adv_str);
2704         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2705                 info_len + 1;
2706
2707         adv_data = os_zalloc(adv_data_len);
2708         if (!adv_data)
2709                 return -1;
2710
2711         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2712         adv_data->id = adv_id;
2713         adv_data->state = svc_state;
2714         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2715         adv_data->auto_accept = (u8) auto_accept;
2716         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2717
2718         for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2719                 adv_data->cpt_priority[i] = cpt_priority[i];
2720                 adv_data->cpt_mask |= cpt_priority[i];
2721         }
2722
2723         if (svc_info && info_len) {
2724                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2725                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2726         }
2727
2728         /*
2729          * Group Advertisements by service string. They do not need to be
2730          * sorted, but groups allow easier Probe Response instance grouping
2731          */
2732         tmp = p2p->p2ps_adv_list;
2733         prev = &p2p->p2ps_adv_list;
2734         while (tmp) {
2735                 if (tmp->id == adv_data->id) {
2736                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2737                                 os_free(adv_data);
2738                                 return -1;
2739                         }
2740                         adv_data->next = tmp->next;
2741                         *prev = adv_data;
2742                         os_free(tmp);
2743                         goto inserted;
2744                 } else {
2745                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2746                                 adv_data->next = tmp->next;
2747                                 tmp->next = adv_data;
2748                                 goto inserted;
2749                         }
2750                 }
2751                 prev = &tmp->next;
2752                 tmp = tmp->next;
2753         }
2754
2755         /* No svc_name match found */
2756         adv_data->next = p2p->p2ps_adv_list;
2757         p2p->p2ps_adv_list = adv_data;
2758
2759 inserted:
2760         p2p_dbg(p2p,
2761                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2762                 adv_id, adv_data->config_methods, svc_state, adv_str,
2763                 adv_data->cpt_mask);
2764
2765         return 0;
2766 }
2767
2768
2769 void p2p_service_flush_asp(struct p2p_data *p2p)
2770 {
2771         struct p2ps_advertisement *adv, *prev;
2772
2773         if (!p2p)
2774                 return;
2775
2776         adv = p2p->p2ps_adv_list;
2777         while (adv) {
2778                 prev = adv;
2779                 adv = adv->next;
2780                 os_free(prev);
2781         }
2782
2783         p2p->p2ps_adv_list = NULL;
2784         p2p_dbg(p2p, "All ASP advertisements flushed");
2785 }
2786
2787
2788 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2789 {
2790         struct p2p_message msg;
2791
2792         os_memset(&msg, 0, sizeof(msg));
2793         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2794                 return -1;
2795
2796         if (msg.p2p_device_addr) {
2797                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2798                 return 0;
2799         } else if (msg.device_id) {
2800                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2801                 return 0;
2802         }
2803         return -1;
2804 }
2805
2806
2807 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2808 {
2809         struct wpabuf *p2p_ie;
2810         int ret;
2811
2812         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2813                                              P2P_IE_VENDOR_TYPE);
2814         if (p2p_ie == NULL)
2815                 return -1;
2816         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2817         wpabuf_free(p2p_ie);
2818         return ret;
2819 }
2820
2821
2822 static void p2p_clear_go_neg(struct p2p_data *p2p)
2823 {
2824         p2p->go_neg_peer = NULL;
2825         p2p_clear_timeout(p2p);
2826         p2p_set_state(p2p, P2P_IDLE);
2827 }
2828
2829
2830 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2831 {
2832         if (p2p->go_neg_peer == NULL) {
2833                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2834                 return; /* No pending Group Formation */
2835         }
2836
2837         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2838             0) {
2839                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2840                         MACSTR " (GO Negotiation peer " MACSTR ")",
2841                         MAC2STR(mac_addr),
2842                         MAC2STR(p2p->go_neg_peer->intended_addr));
2843                 return; /* Ignore unexpected peer address */
2844         }
2845
2846         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2847                 MAC2STR(mac_addr));
2848
2849         p2p_clear_go_neg(p2p);
2850 }
2851
2852
2853 void p2p_group_formation_failed(struct p2p_data *p2p)
2854 {
2855         if (p2p->go_neg_peer == NULL) {
2856                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2857                 return; /* No pending Group Formation */
2858         }
2859
2860         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2861                 MAC2STR(p2p->go_neg_peer->intended_addr));
2862
2863         p2p_clear_go_neg(p2p);
2864 }
2865
2866
2867 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2868 {
2869         struct p2p_data *p2p;
2870
2871         if (cfg->max_peers < 1 ||
2872             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2873                 return NULL;
2874
2875         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2876         if (p2p == NULL)
2877                 return NULL;
2878         p2p->cfg = (struct p2p_config *) (p2p + 1);
2879         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2880         if (cfg->dev_name)
2881                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2882         if (cfg->manufacturer)
2883                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2884         if (cfg->model_name)
2885                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2886         if (cfg->model_number)
2887                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2888         if (cfg->serial_number)
2889                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2890         if (cfg->pref_chan) {
2891                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2892                                                 sizeof(struct p2p_channel));
2893                 if (p2p->cfg->pref_chan) {
2894                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2895                                   cfg->num_pref_chan *
2896                                   sizeof(struct p2p_channel));
2897                 } else
2898                         p2p->cfg->num_pref_chan = 0;
2899         }
2900
2901         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2902
2903         p2p->min_disc_int = 1;
2904         p2p->max_disc_int = 3;
2905         p2p->max_disc_tu = -1;
2906
2907         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2908                 p2p->next_tie_breaker = 0;
2909         p2p->next_tie_breaker &= 0x01;
2910         if (cfg->sd_request)
2911                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2912         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2913         if (cfg->concurrent_operations)
2914                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2915         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2916
2917         dl_list_init(&p2p->devices);
2918
2919         p2p->go_timeout = 100;
2920         p2p->client_timeout = 20;
2921         p2p->num_p2p_sd_queries = 0;
2922
2923         p2p_dbg(p2p, "initialized");
2924         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2925         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2926
2927         return p2p;
2928 }
2929
2930
2931 void p2p_deinit(struct p2p_data *p2p)
2932 {
2933 #ifdef CONFIG_WIFI_DISPLAY
2934         wpabuf_free(p2p->wfd_ie_beacon);
2935         wpabuf_free(p2p->wfd_ie_probe_req);
2936         wpabuf_free(p2p->wfd_ie_probe_resp);
2937         wpabuf_free(p2p->wfd_ie_assoc_req);
2938         wpabuf_free(p2p->wfd_ie_invitation);
2939         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2940         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2941         wpabuf_free(p2p->wfd_ie_go_neg);
2942         wpabuf_free(p2p->wfd_dev_info);
2943         wpabuf_free(p2p->wfd_assoc_bssid);
2944         wpabuf_free(p2p->wfd_coupled_sink_info);
2945 #endif /* CONFIG_WIFI_DISPLAY */
2946
2947         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2948         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2949         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2950         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2951         p2p_flush(p2p);
2952         p2p_free_req_dev_types(p2p);
2953         os_free(p2p->cfg->dev_name);
2954         os_free(p2p->cfg->manufacturer);
2955         os_free(p2p->cfg->model_name);
2956         os_free(p2p->cfg->model_number);
2957         os_free(p2p->cfg->serial_number);
2958         os_free(p2p->cfg->pref_chan);
2959         os_free(p2p->groups);
2960         p2ps_prov_free(p2p);
2961         wpabuf_free(p2p->sd_resp);
2962         os_free(p2p->after_scan_tx);
2963         p2p_remove_wps_vendor_extensions(p2p);
2964         os_free(p2p->no_go_freq.range);
2965         p2p_service_flush_asp(p2p);
2966
2967         os_free(p2p);
2968 }
2969
2970
2971 void p2p_flush(struct p2p_data *p2p)
2972 {
2973         struct p2p_device *dev, *prev;
2974         p2p_stop_find(p2p);
2975         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2976                               list) {
2977                 dl_list_del(&dev->list);
2978                 p2p_device_free(p2p, dev);
2979         }
2980         p2p_free_sd_queries(p2p);
2981         os_free(p2p->after_scan_tx);
2982         p2p->after_scan_tx = NULL;
2983         p2p->ssid_set = 0;
2984 }
2985
2986
2987 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2988 {
2989         struct p2p_device *dev;
2990
2991         dev = p2p_get_device(p2p, addr);
2992         if (dev == NULL)
2993                 return -1;
2994
2995         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2996
2997         if (p2p->go_neg_peer == dev) {
2998                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2999                 p2p->go_neg_peer = NULL;
3000         }
3001
3002         dev->wps_method = WPS_NOT_READY;
3003         dev->oob_pw_id = 0;
3004         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3005         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3006
3007         /* Check if after_scan_tx is for this peer. If so free it */
3008         if (p2p->after_scan_tx &&
3009             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3010                 os_free(p2p->after_scan_tx);
3011                 p2p->after_scan_tx = NULL;
3012         }
3013
3014         return 0;
3015 }
3016
3017
3018 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3019 {
3020         os_free(p2p->cfg->dev_name);
3021         if (dev_name) {
3022                 p2p->cfg->dev_name = os_strdup(dev_name);
3023                 if (p2p->cfg->dev_name == NULL)
3024                         return -1;
3025         } else
3026                 p2p->cfg->dev_name = NULL;
3027         return 0;
3028 }
3029
3030
3031 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3032 {
3033         os_free(p2p->cfg->manufacturer);
3034         p2p->cfg->manufacturer = NULL;
3035         if (manufacturer) {
3036                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3037                 if (p2p->cfg->manufacturer == NULL)
3038                         return -1;
3039         }
3040
3041         return 0;
3042 }
3043
3044
3045 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3046 {
3047         os_free(p2p->cfg->model_name);
3048         p2p->cfg->model_name = NULL;
3049         if (model_name) {
3050                 p2p->cfg->model_name = os_strdup(model_name);
3051                 if (p2p->cfg->model_name == NULL)
3052                         return -1;
3053         }
3054
3055         return 0;
3056 }
3057
3058
3059 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3060 {
3061         os_free(p2p->cfg->model_number);
3062         p2p->cfg->model_number = NULL;
3063         if (model_number) {
3064                 p2p->cfg->model_number = os_strdup(model_number);
3065                 if (p2p->cfg->model_number == NULL)
3066                         return -1;
3067         }
3068
3069         return 0;
3070 }
3071
3072
3073 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3074 {
3075         os_free(p2p->cfg->serial_number);
3076         p2p->cfg->serial_number = NULL;
3077         if (serial_number) {
3078                 p2p->cfg->serial_number = os_strdup(serial_number);
3079                 if (p2p->cfg->serial_number == NULL)
3080                         return -1;
3081         }
3082
3083         return 0;
3084 }
3085
3086
3087 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3088 {
3089         p2p->cfg->config_methods = config_methods;
3090 }
3091
3092
3093 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3094 {
3095         os_memcpy(p2p->cfg->uuid, uuid, 16);
3096 }
3097
3098
3099 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3100 {
3101         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3102         return 0;
3103 }
3104
3105
3106 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3107                           size_t num_dev_types)
3108 {
3109         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3110                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3111         p2p->cfg->num_sec_dev_types = num_dev_types;
3112         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3113         return 0;
3114 }
3115
3116
3117 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3118 {
3119         int i;
3120
3121         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3122                 wpabuf_free(p2p->wps_vendor_ext[i]);
3123                 p2p->wps_vendor_ext[i] = NULL;
3124         }
3125 }
3126
3127
3128 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3129                                  const struct wpabuf *vendor_ext)
3130 {
3131         int i;
3132
3133         if (vendor_ext == NULL)
3134                 return -1;
3135
3136         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3137                 if (p2p->wps_vendor_ext[i] == NULL)
3138                         break;
3139         }
3140         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3141                 return -1;
3142
3143         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3144         if (p2p->wps_vendor_ext[i] == NULL)
3145                 return -1;
3146
3147         return 0;
3148 }
3149
3150
3151 int p2p_set_country(struct p2p_data *p2p, const char *country)
3152 {
3153         os_memcpy(p2p->cfg->country, country, 3);
3154         return 0;
3155 }
3156
3157
3158 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3159 {
3160         if (dev->sd_pending_bcast_queries == 0) {
3161                 /* Initialize with total number of registered broadcast
3162                  * SD queries. */
3163                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3164         }
3165
3166         if (p2p_start_sd(p2p, dev) == 0)
3167                 return 1;
3168
3169         if (dev->req_config_methods &&
3170             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3171                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3172                         MACSTR " (config methods 0x%x)",
3173                         MAC2STR(dev->info.p2p_device_addr),
3174                         dev->req_config_methods);
3175                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3176                         return 1;
3177         }
3178
3179         return 0;
3180 }
3181
3182
3183 void p2p_continue_find(struct p2p_data *p2p)
3184 {
3185         struct p2p_device *dev;
3186         int found;
3187
3188         p2p_set_state(p2p, P2P_SEARCH);
3189
3190         /* Continue from the device following the last iteration */
3191         found = 0;
3192         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3193                 if (dev == p2p->last_p2p_find_oper) {
3194                         found = 1;
3195                         continue;
3196                 }
3197                 if (!found)
3198                         continue;
3199                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3200                         p2p->last_p2p_find_oper = dev;
3201                         return;
3202                 }
3203         }
3204
3205         /*
3206          * Wrap around to the beginning of the list and continue until the last
3207          * iteration device.
3208          */
3209         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3210                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3211                         p2p->last_p2p_find_oper = dev;
3212                         return;
3213                 }
3214                 if (dev == p2p->last_p2p_find_oper)
3215                         break;
3216         }
3217
3218         p2p_listen_in_find(p2p, 1);
3219 }
3220
3221
3222 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3223 {
3224         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3225                 success);
3226         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3227
3228         if (!success) {
3229                 if (p2p->sd_peer)
3230                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3231                 p2p->sd_peer = NULL;
3232                 if (p2p->state != P2P_IDLE)
3233                         p2p_continue_find(p2p);
3234                 return;
3235         }
3236
3237         if (p2p->sd_peer == NULL) {
3238                 p2p_dbg(p2p, "No SD peer entry known");
3239                 if (p2p->state != P2P_IDLE)
3240                         p2p_continue_find(p2p);
3241                 return;
3242         }
3243
3244         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3245                 /* Update the pending broadcast SD query count for this device
3246                  */
3247                 p2p->sd_peer->sd_pending_bcast_queries--;
3248
3249                 /*
3250                  * If there are no pending broadcast queries for this device,
3251                  * mark it as done (-1).
3252                  */
3253                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3254                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3255         }
3256
3257         /* Wait for response from the peer */
3258         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3259         p2p_set_timeout(p2p, 0, 200000);
3260 }
3261
3262
3263 /**
3264  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3265  * @p2p: P2P module context from p2p_init()
3266  */
3267 static void p2p_retry_pd(struct p2p_data *p2p)
3268 {
3269         struct p2p_device *dev;
3270
3271         /*
3272          * Retry the prov disc req attempt only for the peer that the user had
3273          * requested.
3274          */
3275
3276         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3277                 if (os_memcmp(p2p->pending_pd_devaddr,
3278                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3279                         continue;
3280                 if (!dev->req_config_methods)
3281                         continue;
3282
3283                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3284                         MACSTR " (config methods 0x%x)",
3285                         MAC2STR(dev->info.p2p_device_addr),
3286                         dev->req_config_methods);
3287                 p2p_send_prov_disc_req(p2p, dev,
3288                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3289                                        p2p->pd_force_freq);
3290                 return;
3291         }
3292 }
3293
3294
3295 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3296 {
3297         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3298                 success);
3299
3300         /*
3301          * Postpone resetting the pending action state till after we actually
3302          * time out. This allows us to take some action like notifying any
3303          * interested parties about no response to the request.
3304          *
3305          * When the timer (below) goes off we check in IDLE, SEARCH, or
3306          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3307          * requests in, if this was still pending and then raise notification.
3308          */
3309
3310         if (!success) {
3311                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3312
3313                 if (p2p->user_initiated_pd &&
3314                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3315                 {
3316                         /* Retry request from timeout to avoid busy loops */
3317                         p2p->pending_action_state = P2P_PENDING_PD;
3318                         p2p_set_timeout(p2p, 0, 50000);
3319                 } else if (p2p->state != P2P_IDLE)
3320                         p2p_continue_find(p2p);
3321                 else if (p2p->user_initiated_pd) {
3322                         p2p->pending_action_state = P2P_PENDING_PD;
3323                         p2p_set_timeout(p2p, 0, 300000);
3324                 }
3325                 return;
3326         }
3327
3328         /*
3329          * This postponing, of resetting pending_action_state, needs to be
3330          * done only for user initiated PD requests and not internal ones.
3331          */
3332         if (p2p->user_initiated_pd)
3333                 p2p->pending_action_state = P2P_PENDING_PD;
3334         else
3335                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3336
3337         /* Wait for response from the peer */
3338         if (p2p->state == P2P_SEARCH)
3339                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3340         p2p_set_timeout(p2p, 0, 200000);
3341 }
3342
3343
3344 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3345 {
3346         if (p2p->after_scan_tx_in_progress) {
3347                 p2p->after_scan_tx_in_progress = 0;
3348                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3349                     p2p_run_after_scan(p2p))
3350                         return 1;
3351                 if (p2p->state == P2P_SEARCH) {
3352                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3353                         p2p_continue_find(p2p);
3354                 }
3355         }
3356
3357         return 0;
3358 }
3359
3360
3361 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3362 {
3363         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3364                 success);
3365
3366         if (p2p->send_action_in_progress) {
3367                 p2p->send_action_in_progress = 0;
3368                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3369         }
3370
3371         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3372
3373         if (!success)
3374                 goto continue_search;
3375
3376         if (!p2p->cfg->prov_disc_resp_cb ||
3377             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3378                 goto continue_search;
3379
3380         p2p_dbg(p2p,
3381                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3382         return;
3383
3384 continue_search:
3385         p2p_check_after_scan_tx_continuation(p2p);
3386 }
3387
3388
3389 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3390                          struct os_reltime *rx_time, int level, const u8 *ies,
3391                          size_t ies_len)
3392 {
3393         if (os_reltime_before(rx_time, &p2p->find_start)) {
3394                 /*
3395                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3396                  * scan results for relatively long time. To avoid reporting
3397                  * stale information, update P2P peers only based on results
3398                  * that have based on frames received after the last p2p_find
3399                  * operation was started.
3400                  */
3401                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3402                         " (rx_time=%u.%06u)",
3403                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3404                         (unsigned int) rx_time->usec);
3405                 return 0;
3406         }
3407
3408         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3409
3410         return 0;
3411 }
3412
3413
3414 void p2p_scan_res_handled(struct p2p_data *p2p)
3415 {
3416         if (!p2p->p2p_scan_running) {
3417                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3418         }
3419         p2p->p2p_scan_running = 0;
3420         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3421
3422         if (p2p_run_after_scan(p2p))
3423                 return;
3424         if (p2p->state == P2P_SEARCH)
3425                 p2p_continue_find(p2p);
3426 }
3427
3428
3429 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3430 {
3431         u8 dev_capab;
3432         u8 *len;
3433
3434 #ifdef CONFIG_WIFI_DISPLAY
3435         if (p2p->wfd_ie_probe_req)
3436                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3437 #endif /* CONFIG_WIFI_DISPLAY */
3438
3439         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3440                 wpabuf_put_buf(ies,
3441                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3442
3443         len = p2p_buf_add_ie_hdr(ies);
3444
3445         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3446
3447         /* P2PS requires Probe Request frames to include SD bit */
3448         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3449                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3450
3451         p2p_buf_add_capability(ies, dev_capab, 0);
3452
3453         if (dev_id)
3454                 p2p_buf_add_device_id(ies, dev_id);
3455         if (p2p->cfg->reg_class && p2p->cfg->channel)
3456                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3457                                            p2p->cfg->reg_class,
3458                                            p2p->cfg->channel);
3459         if (p2p->ext_listen_interval)
3460                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3461                                               p2p->ext_listen_interval);
3462
3463         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3464                 p2p_buf_add_service_hash(ies, p2p);
3465
3466         /* TODO: p2p_buf_add_operating_channel() if GO */
3467         p2p_buf_update_ie_hdr(ies, len);
3468 }
3469
3470
3471 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3472 {
3473         size_t len = 100;
3474
3475 #ifdef CONFIG_WIFI_DISPLAY
3476         if (p2p && p2p->wfd_ie_probe_req)
3477                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3478 #endif /* CONFIG_WIFI_DISPLAY */
3479
3480         if (p2p && p2p->vendor_elem &&
3481             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3482                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3483
3484         return len;
3485 }
3486
3487
3488 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3489 {
3490         return p2p_attr_text(p2p_ie, buf, end);
3491 }
3492
3493
3494 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3495 {
3496         struct p2p_device *dev = p2p->go_neg_peer;
3497         int timeout;
3498
3499         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3500
3501         if (dev == NULL) {
3502                 p2p_dbg(p2p, "No pending GO Negotiation");
3503                 return;
3504         }
3505
3506         if (success) {
3507                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3508                         p2p_set_state(p2p, P2P_IDLE);
3509                         return;
3510                 }
3511         } else if (dev->go_neg_req_sent) {
3512                 /* Cancel the increment from p2p_connect_send() on failure */
3513                 dev->go_neg_req_sent--;
3514         }
3515
3516         if (!success &&
3517             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3518             !is_zero_ether_addr(dev->member_in_go_dev)) {
3519                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3520                         MAC2STR(dev->info.p2p_device_addr));
3521                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3522                 p2p_send_dev_disc_req(p2p, dev);
3523                 return;
3524         }
3525
3526         /*
3527          * Use P2P find, if needed, to find the other device from its listen
3528          * channel.
3529          */
3530         p2p_set_state(p2p, P2P_CONNECT);
3531         timeout = success ? 500000 : 100000;
3532         if (!success && p2p->go_neg_peer &&
3533             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3534                 unsigned int r;
3535                 /*
3536                  * Peer is expected to wait our response and we will skip the
3537                  * listen phase. Add some randomness to the wait time here to
3538                  * make it less likely to hit cases where we could end up in
3539                  * sync with peer not listening.
3540                  */
3541                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3542                         r = 0;
3543                 timeout += r % 100000;
3544         }
3545         p2p_set_timeout(p2p, 0, timeout);
3546 }
3547
3548
3549 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3550 {
3551         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3552                 success);
3553         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3554                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3555                 return;
3556         }
3557         p2p_set_state(p2p, P2P_CONNECT);
3558         p2p_set_timeout(p2p, 0, 500000);
3559 }
3560
3561
3562 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3563                                        const u8 *addr)
3564 {
3565         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3566         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3567                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3568                 return;
3569         }
3570
3571         if (success) {
3572                 struct p2p_device *dev;
3573                 dev = p2p_get_device(p2p, addr);
3574                 if (dev &&
3575                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3576                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3577         }
3578
3579         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3580                 p2p_continue_find(p2p);
3581 }
3582
3583
3584 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3585                                enum p2p_send_action_result result)
3586 {
3587         struct p2p_device *dev;
3588
3589         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3590         if (result == P2P_SEND_ACTION_FAILED) {
3591                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3592                 p2p_go_neg_failed(p2p, -1);
3593                 return;
3594         }
3595
3596         dev = p2p->go_neg_peer;
3597
3598         if (result == P2P_SEND_ACTION_NO_ACK) {
3599                 /*
3600                  * Retry GO Negotiation Confirmation
3601                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3602                  * ACK for confirmation.
3603                  */
3604                 if (dev && dev->go_neg_conf &&
3605                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3606                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3607                                 dev->go_neg_conf_sent);
3608                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3609                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3610                                             dev->info.p2p_device_addr,
3611                                             p2p->cfg->dev_addr,
3612                                             dev->info.p2p_device_addr,
3613                                             wpabuf_head(dev->go_neg_conf),
3614                                             wpabuf_len(dev->go_neg_conf), 0) >=
3615                             0) {
3616                                 dev->go_neg_conf_sent++;
3617                                 return;
3618                         }
3619                         p2p_dbg(p2p, "Failed to re-send Action frame");
3620
3621                         /*
3622                          * Continue with the assumption that the first attempt
3623                          * went through and just the ACK frame was lost.
3624                          */
3625                 }
3626
3627                 /*
3628                  * It looks like the TX status for GO Negotiation Confirm is
3629                  * often showing failure even when the peer has actually
3630                  * received the frame. Since the peer may change channels
3631                  * immediately after having received the frame, we may not see
3632                  * an Ack for retries, so just dropping a single frame may
3633                  * trigger this. To allow the group formation to succeed if the
3634                  * peer did indeed receive the frame, continue regardless of
3635                  * the TX status.
3636                  */
3637                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3638         }
3639
3640         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3641
3642         if (dev == NULL)
3643                 return;
3644
3645         p2p_go_complete(p2p, dev);
3646 }
3647
3648
3649 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3650                         const u8 *src, const u8 *bssid,
3651                         enum p2p_send_action_result result)
3652 {
3653         enum p2p_pending_action_state state;
3654         int success;
3655
3656         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3657                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3658                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3659                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3660         success = result == P2P_SEND_ACTION_SUCCESS;
3661         state = p2p->pending_action_state;
3662         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3663         switch (state) {
3664         case P2P_NO_PENDING_ACTION:
3665                 if (p2p->send_action_in_progress) {
3666                         p2p->send_action_in_progress = 0;
3667                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3668                 }
3669                 p2p_check_after_scan_tx_continuation(p2p);
3670                 break;
3671         case P2P_PENDING_GO_NEG_REQUEST:
3672                 p2p_go_neg_req_cb(p2p, success);
3673                 break;
3674         case P2P_PENDING_GO_NEG_RESPONSE:
3675                 p2p_go_neg_resp_cb(p2p, success);
3676                 break;
3677         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3678                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3679                 break;
3680         case P2P_PENDING_GO_NEG_CONFIRM:
3681                 p2p_go_neg_conf_cb(p2p, result);
3682                 break;
3683         case P2P_PENDING_SD:
3684                 p2p_sd_cb(p2p, success);
3685                 break;
3686         case P2P_PENDING_PD:
3687                 p2p_prov_disc_cb(p2p, success);
3688                 break;
3689         case P2P_PENDING_PD_RESPONSE:
3690                 p2p_prov_disc_resp_cb(p2p, success);
3691                 break;
3692         case P2P_PENDING_INVITATION_REQUEST:
3693                 p2p_invitation_req_cb(p2p, success);
3694                 break;
3695         case P2P_PENDING_INVITATION_RESPONSE:
3696                 p2p_invitation_resp_cb(p2p, success);
3697                 break;
3698         case P2P_PENDING_DEV_DISC_REQUEST:
3699                 p2p_dev_disc_req_cb(p2p, success);
3700                 break;
3701         case P2P_PENDING_DEV_DISC_RESPONSE:
3702                 p2p_dev_disc_resp_cb(p2p, success);
3703                 break;
3704         case P2P_PENDING_GO_DISC_REQ:
3705                 p2p_go_disc_req_cb(p2p, success);
3706                 break;
3707         }
3708
3709         p2p->after_scan_tx_in_progress = 0;
3710 }
3711
3712
3713 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3714                    unsigned int duration)
3715 {
3716         if (freq == p2p->pending_client_disc_freq) {
3717                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3718                 p2p->pending_client_disc_freq = 0;
3719                 return;
3720         }
3721
3722         if (freq != p2p->pending_listen_freq) {
3723                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3724                         freq, duration, p2p->pending_listen_freq);
3725                 return;
3726         }
3727
3728         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3729                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3730                 p2p->pending_listen_freq);
3731         p2p->in_listen = 1;
3732         p2p->drv_in_listen = freq;
3733         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3734                 /*
3735                  * Add 20 msec extra wait to avoid race condition with driver
3736                  * remain-on-channel end event, i.e., give driver more time to
3737                  * complete the operation before our timeout expires.
3738                  */
3739                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3740                                 p2p->pending_listen_usec + 20000);
3741         }
3742
3743         p2p->pending_listen_freq = 0;
3744 }
3745
3746
3747 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3748 {
3749         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3750         p2p->drv_in_listen = 0;
3751         if (p2p->in_listen)
3752                 return 0; /* Internal timeout will trigger the next step */
3753
3754         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3755                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3756                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3757                         p2p_go_neg_failed(p2p, -1);
3758                         return 0;
3759                 }
3760
3761                 p2p_set_state(p2p, P2P_CONNECT);
3762                 p2p_connect_send(p2p, p2p->go_neg_peer);
3763                 return 1;
3764         } else if (p2p->state == P2P_SEARCH) {
3765                 if (p2p->p2p_scan_running) {
3766                          /*
3767                           * Search is already in progress. This can happen if
3768                           * an Action frame RX is reported immediately after
3769                           * the end of a remain-on-channel operation and the
3770                           * response frame to that is sent using an offchannel
3771                           * operation while in p2p_find. Avoid an attempt to
3772                           * restart a scan here.
3773                           */
3774                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3775                         return 1;
3776                 }
3777                 if (p2p->pending_listen_freq) {
3778                         /*
3779                          * Better wait a bit if the driver is unable to start
3780                          * offchannel operation for some reason. p2p_search()
3781                          * will be started from internal timeout.
3782                          */
3783                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3784                         p2p_set_timeout(p2p, 0, 100000);
3785                         return 1;
3786                 }
3787                 if (p2p->search_delay) {
3788                         p2p_dbg(p2p, "Delay search operation by %u ms",
3789                                 p2p->search_delay);
3790                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3791                                         (p2p->search_delay % 1000) * 1000);
3792                         return 1;
3793                 }
3794                 p2p_search(p2p);
3795                 return 1;
3796         }
3797
3798         return 0;
3799 }
3800
3801
3802 static void p2p_timeout_connect(struct p2p_data *p2p)
3803 {
3804         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3805         if (p2p->go_neg_peer &&
3806             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3807                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3808                 p2p_go_neg_failed(p2p, -1);
3809                 return;
3810         }
3811         if (p2p->go_neg_peer &&
3812             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3813             p2p->go_neg_peer->connect_reqs < 120) {
3814                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3815                 p2p_connect_send(p2p, p2p->go_neg_peer);
3816                 return;
3817         }
3818         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3819                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3820                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3821                 p2p_set_timeout(p2p, 0, 30000);
3822                 return;
3823         }
3824         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3825         p2p_listen_in_find(p2p, 0);
3826 }
3827
3828
3829 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3830 {
3831         if (p2p->go_neg_peer) {
3832                 if (p2p->drv_in_listen) {
3833                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3834                         return;
3835                 }
3836
3837                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3838                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3839                         p2p_go_neg_failed(p2p, -1);
3840                         return;
3841                 }
3842
3843                 p2p_set_state(p2p, P2P_CONNECT);
3844                 p2p_connect_send(p2p, p2p->go_neg_peer);
3845         } else
3846                 p2p_set_state(p2p, P2P_IDLE);
3847 }
3848
3849
3850 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3851 {
3852         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3853
3854         if (p2p->cfg->is_concurrent_session_active &&
3855             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3856                 p2p_set_timeout(p2p, 0, 500000);
3857         else
3858                 p2p_set_timeout(p2p, 0, 200000);
3859 }
3860
3861
3862 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3863 {
3864         struct p2p_device *dev = p2p->go_neg_peer;
3865
3866         if (dev == NULL) {
3867                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3868                 return;
3869         }
3870
3871         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3872         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3873         p2p_listen_in_find(p2p, 0);
3874 }
3875
3876
3877 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3878 {
3879         p2p_dbg(p2p, "Service Discovery Query timeout");
3880         if (p2p->sd_peer) {
3881                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3882                 p2p->sd_peer = NULL;
3883         }
3884         p2p_continue_find(p2p);
3885 }
3886
3887
3888 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3889 {
3890         p2p_dbg(p2p, "Provision Discovery Request timeout");
3891         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3892         p2p_continue_find(p2p);
3893 }
3894
3895
3896 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3897 {
3898         u32 adv_id = 0;
3899         u8 *adv_mac = NULL;
3900
3901         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3902
3903         /*
3904          * For user initiated PD requests that we have not gotten any responses
3905          * for while in IDLE state, we retry them a couple of times before
3906          * giving up.
3907          */
3908         if (!p2p->user_initiated_pd)
3909                 return;
3910
3911         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3912
3913         if (p2p->pd_retries) {
3914                 p2p->pd_retries--;
3915                 p2p_retry_pd(p2p);
3916         } else {
3917                 struct p2p_device *dev;
3918                 int for_join = 0;
3919
3920                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3921                         if (os_memcmp(p2p->pending_pd_devaddr,
3922                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3923                                 continue;
3924                         if (dev->req_config_methods &&
3925                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3926                                 for_join = 1;
3927                 }
3928
3929                 if (p2p->p2ps_prov) {
3930                         adv_id = p2p->p2ps_prov->adv_id;
3931                         adv_mac = p2p->p2ps_prov->adv_mac;
3932                 }
3933
3934                 if (p2p->cfg->prov_disc_fail)
3935                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3936                                                  p2p->pending_pd_devaddr,
3937                                                  for_join ?
3938                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3939                                                  P2P_PROV_DISC_TIMEOUT,
3940                                                  adv_id, adv_mac, NULL);
3941                 p2p_reset_pending_pd(p2p);
3942         }
3943 }
3944
3945
3946 static void p2p_timeout_invite(struct p2p_data *p2p)
3947 {
3948         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3949         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3950         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3951                 /*
3952                  * Better remain on operating channel instead of listen channel
3953                  * when running a group.
3954                  */
3955                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3956                 p2p_set_timeout(p2p, 0, 100000);
3957                 return;
3958         }
3959         p2p_listen_in_find(p2p, 0);
3960 }
3961
3962
3963 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3964 {
3965         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3966                 p2p_set_state(p2p, P2P_INVITE);
3967                 p2p_invite_send(p2p, p2p->invite_peer,
3968                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3969         } else {
3970                 if (p2p->invite_peer) {
3971                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3972                         if (p2p->cfg->invitation_result)
3973                                 p2p->cfg->invitation_result(
3974                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3975                                         p2p->invite_peer->info.p2p_device_addr,
3976                                         0, 0);
3977                 }
3978                 p2p_set_state(p2p, P2P_IDLE);
3979         }
3980 }
3981
3982
3983 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3984 {
3985         struct p2p_data *p2p = eloop_ctx;
3986
3987         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3988
3989         p2p->in_listen = 0;
3990         if (p2p->drv_in_listen) {
3991                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3992                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3993         }
3994
3995         switch (p2p->state) {
3996         case P2P_IDLE:
3997                 /* Check if we timed out waiting for PD req */
3998                 if (p2p->pending_action_state == P2P_PENDING_PD)
3999                         p2p_timeout_prov_disc_req(p2p);
4000                 break;
4001         case P2P_SEARCH:
4002                 /* Check if we timed out waiting for PD req */
4003                 if (p2p->pending_action_state == P2P_PENDING_PD)
4004                         p2p_timeout_prov_disc_req(p2p);
4005                 if (p2p->search_delay && !p2p->in_search_delay) {
4006                         p2p_dbg(p2p, "Delay search operation by %u ms",
4007                                 p2p->search_delay);
4008                         p2p->in_search_delay = 1;
4009                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4010                                         (p2p->search_delay % 1000) * 1000);
4011                         break;
4012                 }
4013                 p2p->in_search_delay = 0;
4014                 p2p_search(p2p);
4015                 break;
4016         case P2P_CONNECT:
4017                 p2p_timeout_connect(p2p);
4018                 break;
4019         case P2P_CONNECT_LISTEN:
4020                 p2p_timeout_connect_listen(p2p);
4021                 break;
4022         case P2P_GO_NEG:
4023                 break;
4024         case P2P_LISTEN_ONLY:
4025                 /* Check if we timed out waiting for PD req */
4026                 if (p2p->pending_action_state == P2P_PENDING_PD)
4027                         p2p_timeout_prov_disc_req(p2p);
4028
4029                 if (p2p->ext_listen_only) {
4030                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4031                         p2p->ext_listen_only = 0;
4032                         p2p_set_state(p2p, P2P_IDLE);
4033                 }
4034                 break;
4035         case P2P_WAIT_PEER_CONNECT:
4036                 p2p_timeout_wait_peer_connect(p2p);
4037                 break;
4038         case P2P_WAIT_PEER_IDLE:
4039                 p2p_timeout_wait_peer_idle(p2p);
4040                 break;
4041         case P2P_SD_DURING_FIND:
4042                 p2p_timeout_sd_during_find(p2p);
4043                 break;
4044         case P2P_PROVISIONING:
4045                 break;
4046         case P2P_PD_DURING_FIND:
4047                 p2p_timeout_prov_disc_during_find(p2p);
4048                 break;
4049         case P2P_INVITE:
4050                 p2p_timeout_invite(p2p);
4051                 break;
4052         case P2P_INVITE_LISTEN:
4053                 p2p_timeout_invite_listen(p2p);
4054                 break;
4055         }
4056 }
4057
4058
4059 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4060 {
4061         struct p2p_device *dev;
4062
4063         dev = p2p_get_device(p2p, peer_addr);
4064         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4065                 MACSTR, MAC2STR(peer_addr));
4066         if (dev == NULL) {
4067                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4068                 return -1;
4069         }
4070         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4071         dev->flags |= P2P_DEV_USER_REJECTED;
4072         return 0;
4073 }
4074
4075
4076 const char * p2p_wps_method_text(enum p2p_wps_method method)
4077 {
4078         switch (method) {
4079         case WPS_NOT_READY:
4080                 return "not-ready";
4081         case WPS_PIN_DISPLAY:
4082                 return "Display";
4083         case WPS_PIN_KEYPAD:
4084                 return "Keypad";
4085         case WPS_PBC:
4086                 return "PBC";
4087         case WPS_NFC:
4088                 return "NFC";
4089         case WPS_P2PS:
4090                 return "P2PS";
4091         }
4092
4093         return "??";
4094 }
4095
4096
4097 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4098 {
4099         switch (go_state) {
4100         case UNKNOWN_GO:
4101                 return "unknown";
4102         case LOCAL_GO:
4103                 return "local";
4104         case  REMOTE_GO:
4105                 return "remote";
4106         }
4107
4108         return "??";
4109 }
4110
4111
4112 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4113                                                const u8 *addr, int next)
4114 {
4115         struct p2p_device *dev;
4116
4117         if (addr)
4118                 dev = p2p_get_device(p2p, addr);
4119         else
4120                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4121
4122         if (dev && next) {
4123                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4124                 if (&dev->list == &p2p->devices)
4125                         dev = NULL;
4126         }
4127
4128         if (dev == NULL)
4129                 return NULL;
4130
4131         return &dev->info;
4132 }
4133
4134
4135 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4136                           char *buf, size_t buflen)
4137 {
4138         struct p2p_device *dev;
4139         int res;
4140         char *pos, *end;
4141         struct os_reltime now;
4142
4143         if (info == NULL)
4144                 return -1;
4145
4146         dev = (struct p2p_device *) (((u8 *) info) -
4147                                      offsetof(struct p2p_device, info));
4148
4149         pos = buf;
4150         end = buf + buflen;
4151
4152         os_get_reltime(&now);
4153         res = os_snprintf(pos, end - pos,
4154                           "age=%d\n"
4155                           "listen_freq=%d\n"
4156                           "wps_method=%s\n"
4157                           "interface_addr=" MACSTR "\n"
4158                           "member_in_go_dev=" MACSTR "\n"
4159                           "member_in_go_iface=" MACSTR "\n"
4160                           "go_neg_req_sent=%d\n"
4161                           "go_state=%s\n"
4162                           "dialog_token=%u\n"
4163                           "intended_addr=" MACSTR "\n"
4164                           "country=%c%c\n"
4165                           "oper_freq=%d\n"
4166                           "req_config_methods=0x%x\n"
4167                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4168                           "status=%d\n"
4169                           "invitation_reqs=%u\n",
4170                           (int) (now.sec - dev->last_seen.sec),
4171                           dev->listen_freq,
4172                           p2p_wps_method_text(dev->wps_method),
4173                           MAC2STR(dev->interface_addr),
4174                           MAC2STR(dev->member_in_go_dev),
4175                           MAC2STR(dev->member_in_go_iface),
4176                           dev->go_neg_req_sent,
4177                           p2p_go_state_text(dev->go_state),
4178                           dev->dialog_token,
4179                           MAC2STR(dev->intended_addr),
4180                           dev->country[0] ? dev->country[0] : '_',
4181                           dev->country[1] ? dev->country[1] : '_',
4182                           dev->oper_freq,
4183                           dev->req_config_methods,
4184                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4185                           "[PROBE_REQ_ONLY]" : "",
4186                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4187                           dev->flags & P2P_DEV_NOT_YET_READY ?
4188                           "[NOT_YET_READY]" : "",
4189                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4190                           "[PD_PEER_DISPLAY]" : "",
4191                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4192                           "[PD_PEER_KEYPAD]" : "",
4193                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4194                           "[PD_PEER_P2PS]" : "",
4195                           dev->flags & P2P_DEV_USER_REJECTED ?
4196                           "[USER_REJECTED]" : "",
4197                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4198                           "[PEER_WAITING_RESPONSE]" : "",
4199                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4200                           "[PREFER_PERSISTENT_GROUP]" : "",
4201                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4202                           "[WAIT_GO_NEG_RESPONSE]" : "",
4203                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4204                           "[WAIT_GO_NEG_CONFIRM]" : "",
4205                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4206                           "[GROUP_CLIENT_ONLY]" : "",
4207                           dev->flags & P2P_DEV_FORCE_FREQ ?
4208                           "[FORCE_FREQ]" : "",
4209                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4210                           "[PD_FOR_JOIN]" : "",
4211                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4212                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4213                           dev->status,
4214                           dev->invitation_reqs);
4215         if (os_snprintf_error(end - pos, res))
4216                 return pos - buf;
4217         pos += res;
4218
4219         if (dev->ext_listen_period) {
4220                 res = os_snprintf(pos, end - pos,
4221                                   "ext_listen_period=%u\n"
4222                                   "ext_listen_interval=%u\n",
4223                                   dev->ext_listen_period,
4224                                   dev->ext_listen_interval);
4225                 if (os_snprintf_error(end - pos, res))
4226                         return pos - buf;
4227                 pos += res;
4228         }
4229
4230         if (dev->oper_ssid_len) {
4231                 res = os_snprintf(pos, end - pos,
4232                                   "oper_ssid=%s\n",
4233                                   wpa_ssid_txt(dev->oper_ssid,
4234                                                dev->oper_ssid_len));
4235                 if (os_snprintf_error(end - pos, res))
4236                         return pos - buf;
4237                 pos += res;
4238         }
4239
4240 #ifdef CONFIG_WIFI_DISPLAY
4241         if (dev->info.wfd_subelems) {
4242                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4243                 if (os_snprintf_error(end - pos, res))
4244                         return pos - buf;
4245                 pos += res;
4246
4247                 pos += wpa_snprintf_hex(pos, end - pos,
4248                                         wpabuf_head(dev->info.wfd_subelems),
4249                                         wpabuf_len(dev->info.wfd_subelems));
4250
4251                 res = os_snprintf(pos, end - pos, "\n");
4252                 if (os_snprintf_error(end - pos, res))
4253                         return pos - buf;
4254                 pos += res;
4255         }
4256 #endif /* CONFIG_WIFI_DISPLAY */
4257
4258         return pos - buf;
4259 }
4260
4261
4262 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4263 {
4264         return p2p_get_device(p2p, addr) != NULL;
4265 }
4266
4267
4268 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4269 {
4270         if (enabled) {
4271                 p2p_dbg(p2p, "Client discoverability enabled");
4272                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4273         } else {
4274                 p2p_dbg(p2p, "Client discoverability disabled");
4275                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4276         }
4277 }
4278
4279
4280 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4281                                               u32 duration2, u32 interval2)
4282 {
4283         struct wpabuf *req;
4284         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4285         u8 *len;
4286
4287         req = wpabuf_alloc(100);
4288         if (req == NULL)
4289                 return NULL;
4290
4291         if (duration1 || interval1) {
4292                 os_memset(&desc1, 0, sizeof(desc1));
4293                 desc1.count_type = 1;
4294                 desc1.duration = duration1;
4295                 desc1.interval = interval1;
4296                 ptr1 = &desc1;
4297
4298                 if (duration2 || interval2) {
4299                         os_memset(&desc2, 0, sizeof(desc2));
4300                         desc2.count_type = 2;
4301                         desc2.duration = duration2;
4302                         desc2.interval = interval2;
4303                         ptr2 = &desc2;
4304                 }
4305         }
4306
4307         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4308         len = p2p_buf_add_ie_hdr(req);
4309         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4310         p2p_buf_update_ie_hdr(req, len);
4311
4312         return req;
4313 }
4314
4315
4316 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4317                      const u8 *own_interface_addr, unsigned int freq,
4318                      u32 duration1, u32 interval1, u32 duration2,
4319                      u32 interval2)
4320 {
4321         struct wpabuf *req;
4322
4323         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4324                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4325                 "dur2=%u int2=%u",
4326                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4327                 freq, duration1, interval1, duration2, interval2);
4328
4329         req = p2p_build_presence_req(duration1, interval1, duration2,
4330                                      interval2);
4331         if (req == NULL)
4332                 return -1;
4333
4334         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4335         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4336                             go_interface_addr,
4337                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4338                 p2p_dbg(p2p, "Failed to send Action frame");
4339         }
4340         wpabuf_free(req);
4341
4342         return 0;
4343 }
4344
4345
4346 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4347                                                size_t noa_len, u8 dialog_token)
4348 {
4349         struct wpabuf *resp;
4350         u8 *len;
4351
4352         resp = wpabuf_alloc(100 + noa_len);
4353         if (resp == NULL)
4354                 return NULL;
4355
4356         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4357         len = p2p_buf_add_ie_hdr(resp);
4358         p2p_buf_add_status(resp, status);
4359         if (noa) {
4360                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4361                 wpabuf_put_le16(resp, noa_len);
4362                 wpabuf_put_data(resp, noa, noa_len);
4363         } else
4364                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4365         p2p_buf_update_ie_hdr(resp, len);
4366
4367         return resp;
4368 }
4369
4370
4371 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4372                                      const u8 *sa, const u8 *data, size_t len,
4373                                      int rx_freq)
4374 {
4375         struct p2p_message msg;
4376         u8 status;
4377         struct wpabuf *resp;
4378         size_t g;
4379         struct p2p_group *group = NULL;
4380         int parsed = 0;
4381         u8 noa[50];
4382         int noa_len;
4383
4384         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4385
4386         for (g = 0; g < p2p->num_groups; g++) {
4387                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4388                               ETH_ALEN) == 0) {
4389                         group = p2p->groups[g];
4390                         break;
4391                 }
4392         }
4393         if (group == NULL) {
4394                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4395                         MACSTR, MAC2STR(da));
4396                 return;
4397         }
4398
4399         if (p2p_parse(data, len, &msg) < 0) {
4400                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4401                 status = P2P_SC_FAIL_INVALID_PARAMS;
4402                 goto fail;
4403         }
4404         parsed = 1;
4405
4406         if (msg.noa == NULL) {
4407                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4408                 status = P2P_SC_FAIL_INVALID_PARAMS;
4409                 goto fail;
4410         }
4411
4412         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4413
4414 fail:
4415         if (p2p->cfg->get_noa)
4416                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4417                                             sizeof(noa));
4418         else
4419                 noa_len = -1;
4420         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4421                                        noa_len > 0 ? noa_len : 0,
4422                                        msg.dialog_token);
4423         if (parsed)
4424                 p2p_parse_free(&msg);
4425         if (resp == NULL)
4426                 return;
4427
4428         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4429         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4430                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4431                 p2p_dbg(p2p, "Failed to send Action frame");
4432         }
4433         wpabuf_free(resp);
4434 }
4435
4436
4437 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4438                                       const u8 *sa, const u8 *data, size_t len)
4439 {
4440         struct p2p_message msg;
4441
4442         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4443
4444         if (p2p_parse(data, len, &msg) < 0) {
4445                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4446                 return;
4447         }
4448
4449         if (msg.status == NULL || msg.noa == NULL) {
4450                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4451                 p2p_parse_free(&msg);
4452                 return;
4453         }
4454
4455         if (p2p->cfg->presence_resp) {
4456                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4457                                         msg.noa, msg.noa_len);
4458         }
4459
4460         if (*msg.status) {
4461                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4462                         *msg.status);
4463                 p2p_parse_free(&msg);
4464                 return;
4465         }
4466
4467         p2p_dbg(p2p, "P2P Presence Request was accepted");
4468         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4469                     msg.noa, msg.noa_len);
4470         /* TODO: process NoA */
4471         p2p_parse_free(&msg);
4472 }
4473
4474
4475 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4476 {
4477         struct p2p_data *p2p = eloop_ctx;
4478
4479         if (p2p->ext_listen_interval) {
4480                 /* Schedule next extended listen timeout */
4481                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4482                                        p2p->ext_listen_interval_usec,
4483                                        p2p_ext_listen_timeout, p2p, NULL);
4484         }
4485
4486         if ((p2p->cfg->is_p2p_in_progress &&
4487              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4488             (p2p->pending_action_state == P2P_PENDING_PD &&
4489              p2p->pd_retries > 0)) {
4490                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4491                         p2p_state_txt(p2p->state));
4492                 return;
4493         }
4494
4495         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4496                 /*
4497                  * This should not really happen, but it looks like the Listen
4498                  * command may fail is something else (e.g., a scan) was
4499                  * running at an inconvenient time. As a workaround, allow new
4500                  * Extended Listen operation to be started.
4501                  */
4502                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4503                 p2p->ext_listen_only = 0;
4504                 p2p_set_state(p2p, P2P_IDLE);
4505         }
4506
4507         if (p2p->state != P2P_IDLE) {
4508                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4509                 return;
4510         }
4511
4512         p2p_dbg(p2p, "Extended Listen timeout");
4513         p2p->ext_listen_only = 1;
4514         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4515                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4516                 p2p->ext_listen_only = 0;
4517         }
4518 }
4519
4520
4521 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4522                    unsigned int interval)
4523 {
4524         if (period > 65535 || interval > 65535 || period > interval ||
4525             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4526                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4527                         period, interval);
4528                 return -1;
4529         }
4530
4531         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4532
4533         if (interval == 0) {
4534                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4535                 p2p->ext_listen_period = 0;
4536                 p2p->ext_listen_interval = 0;
4537                 return 0;
4538         }
4539
4540         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4541                 period, interval);
4542         p2p->ext_listen_period = period;
4543         p2p->ext_listen_interval = interval;
4544         p2p->ext_listen_interval_sec = interval / 1000;
4545         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4546
4547         eloop_register_timeout(p2p->ext_listen_interval_sec,
4548                                p2p->ext_listen_interval_usec,
4549                                p2p_ext_listen_timeout, p2p, NULL);
4550
4551         return 0;
4552 }
4553
4554
4555 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4556                       const u8 *ie, size_t ie_len)
4557 {
4558         struct p2p_message msg;
4559
4560         if (bssid == NULL || ie == NULL)
4561                 return;
4562
4563         os_memset(&msg, 0, sizeof(msg));
4564         if (p2p_parse_ies(ie, ie_len, &msg))
4565                 return;
4566         if (msg.minor_reason_code == NULL) {
4567                 p2p_parse_free(&msg);
4568                 return;
4569         }
4570
4571         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4572                 " reason_code=%u minor_reason_code=%u",
4573                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4574
4575         p2p_parse_free(&msg);
4576 }
4577
4578
4579 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4580                         const u8 *ie, size_t ie_len)
4581 {
4582         struct p2p_message msg;
4583
4584         if (bssid == NULL || ie == NULL)
4585                 return;
4586
4587         os_memset(&msg, 0, sizeof(msg));
4588         if (p2p_parse_ies(ie, ie_len, &msg))
4589                 return;
4590         if (msg.minor_reason_code == NULL) {
4591                 p2p_parse_free(&msg);
4592                 return;
4593         }
4594
4595         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4596                 " reason_code=%u minor_reason_code=%u",
4597                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4598
4599         p2p_parse_free(&msg);
4600 }
4601
4602
4603 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4604 {
4605         if (enabled) {
4606                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4607                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4608         } else {
4609                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4610                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4611         }
4612 }
4613
4614
4615 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4616                                  u8 *op_channel)
4617 {
4618         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4619 }
4620
4621
4622 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4623                            u8 forced)
4624 {
4625         if (p2p_channel_to_freq(reg_class, channel) < 0)
4626                 return -1;
4627
4628         /*
4629          * Listen channel was set in configuration or set by control interface;
4630          * cannot override it.
4631          */
4632         if (p2p->cfg->channel_forced && forced == 0) {
4633                 p2p_dbg(p2p,
4634                         "Listen channel was previously configured - do not override based on optimization");
4635                 return -1;
4636         }
4637
4638         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4639                 reg_class, channel);
4640
4641         if (p2p->state == P2P_IDLE) {
4642                 p2p->cfg->reg_class = reg_class;
4643                 p2p->cfg->channel = channel;
4644                 p2p->cfg->channel_forced = forced;
4645         } else {
4646                 p2p_dbg(p2p, "Defer setting listen channel");
4647                 p2p->pending_reg_class = reg_class;
4648                 p2p->pending_channel = channel;
4649                 p2p->pending_channel_forced = forced;
4650         }
4651
4652         return 0;
4653 }
4654
4655
4656 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4657 {
4658         return p2p->cfg->channel;
4659 }
4660
4661
4662 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4663 {
4664         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4665         if (postfix == NULL) {
4666                 p2p->cfg->ssid_postfix_len = 0;
4667                 return 0;
4668         }
4669         if (len > sizeof(p2p->cfg->ssid_postfix))
4670                 return -1;
4671         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4672         p2p->cfg->ssid_postfix_len = len;
4673         return 0;
4674 }
4675
4676
4677 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4678                          int cfg_op_channel)
4679 {
4680         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4681                 return -1;
4682
4683         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4684                 op_reg_class, op_channel);
4685         p2p->cfg->op_reg_class = op_reg_class;
4686         p2p->cfg->op_channel = op_channel;
4687         p2p->cfg->cfg_op_channel = cfg_op_channel;
4688         return 0;
4689 }
4690
4691
4692 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4693                       const struct p2p_channel *pref_chan)
4694 {
4695         struct p2p_channel *n;
4696
4697         if (pref_chan) {
4698                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4699                 if (n == NULL)
4700                         return -1;
4701                 os_memcpy(n, pref_chan,
4702                           num_pref_chan * sizeof(struct p2p_channel));
4703         } else
4704                 n = NULL;
4705
4706         os_free(p2p->cfg->pref_chan);
4707         p2p->cfg->pref_chan = n;
4708         p2p->cfg->num_pref_chan = num_pref_chan;
4709
4710         return 0;
4711 }
4712
4713
4714 int p2p_set_no_go_freq(struct p2p_data *p2p,
4715                        const struct wpa_freq_range_list *list)
4716 {
4717         struct wpa_freq_range *tmp;
4718
4719         if (list == NULL || list->num == 0) {
4720                 os_free(p2p->no_go_freq.range);
4721                 p2p->no_go_freq.range = NULL;
4722                 p2p->no_go_freq.num = 0;
4723                 return 0;
4724         }
4725
4726         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4727         if (tmp == NULL)
4728                 return -1;
4729         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4730         os_free(p2p->no_go_freq.range);
4731         p2p->no_go_freq.range = tmp;
4732         p2p->no_go_freq.num = list->num;
4733         p2p_dbg(p2p, "Updated no GO chan list");
4734
4735         return 0;
4736 }
4737
4738
4739 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4740                            u8 *iface_addr)
4741 {
4742         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4743         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4744                 return -1;
4745         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4746         return 0;
4747 }
4748
4749
4750 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4751                            u8 *dev_addr)
4752 {
4753         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4754         if (dev == NULL)
4755                 return -1;
4756         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4757         return 0;
4758 }
4759
4760
4761 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4762 {
4763         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4764         if (is_zero_ether_addr(p2p->peer_filter))
4765                 p2p_dbg(p2p, "Disable peer filter");
4766         else
4767                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4768                         MAC2STR(p2p->peer_filter));
4769 }
4770
4771
4772 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4773 {
4774         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4775         if (p2p->cross_connect == enabled)
4776                 return;
4777         p2p->cross_connect = enabled;
4778         /* TODO: may need to tear down any action group where we are GO(?) */
4779 }
4780
4781
4782 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4783 {
4784         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4785         if (dev == NULL)
4786                 return -1;
4787         if (dev->oper_freq <= 0)
4788                 return -1;
4789         return dev->oper_freq;
4790 }
4791
4792
4793 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4794 {
4795         p2p_dbg(p2p, "Intra BSS distribution %s",
4796                 enabled ? "enabled" : "disabled");
4797         p2p->cfg->p2p_intra_bss = enabled;
4798 }
4799
4800
4801 void p2p_update_channel_list(struct p2p_data *p2p,
4802                              const struct p2p_channels *chan,
4803                              const struct p2p_channels *cli_chan)
4804 {
4805         p2p_dbg(p2p, "Update channel list");
4806         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4807         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4808         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4809                   sizeof(struct p2p_channels));
4810         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4811 }
4812
4813
4814 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4815                     const u8 *src, const u8 *bssid, const u8 *buf,
4816                     size_t len, unsigned int wait_time)
4817 {
4818         if (p2p->p2p_scan_running) {
4819                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4820                 if (p2p->after_scan_tx) {
4821                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4822                         os_free(p2p->after_scan_tx);
4823                 }
4824                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4825                                                len);
4826                 if (p2p->after_scan_tx == NULL)
4827                         return -1;
4828                 p2p->after_scan_tx->freq = freq;
4829                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4830                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4831                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4832                 p2p->after_scan_tx->len = len;
4833                 p2p->after_scan_tx->wait_time = wait_time;
4834                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4835                 return 0;
4836         }
4837
4838         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4839                                      buf, len, wait_time);
4840 }
4841
4842
4843 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4844                            int freq_overall)
4845 {
4846         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4847                 freq_24, freq_5, freq_overall);
4848         p2p->best_freq_24 = freq_24;
4849         p2p->best_freq_5 = freq_5;
4850         p2p->best_freq_overall = freq_overall;
4851 }
4852
4853
4854 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4855 {
4856         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4857         p2p->own_freq_preference = freq;
4858 }
4859
4860
4861 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4862 {
4863         if (p2p == NULL || p2p->go_neg_peer == NULL)
4864                 return NULL;
4865         return p2p->go_neg_peer->info.p2p_device_addr;
4866 }
4867
4868
4869 const struct p2p_peer_info *
4870 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4871 {
4872         struct p2p_device *dev;
4873
4874         if (addr) {
4875                 dev = p2p_get_device(p2p, addr);
4876                 if (!dev)
4877                         return NULL;
4878
4879                 if (!next) {
4880                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4881                                 return NULL;
4882
4883                         return &dev->info;
4884                 } else {
4885                         do {
4886                                 dev = dl_list_first(&dev->list,
4887                                                     struct p2p_device,
4888                                                     list);
4889                                 if (!dev || &dev->list == &p2p->devices)
4890                                         return NULL;
4891                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4892                 }
4893         } else {
4894                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4895                 if (!dev)
4896                         return NULL;
4897                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4898                         dev = dl_list_first(&dev->list,
4899                                             struct p2p_device,
4900                                             list);
4901                         if (!dev || &dev->list == &p2p->devices)
4902                                 return NULL;
4903                 }
4904         }
4905
4906         return &dev->info;
4907 }
4908
4909
4910 int p2p_in_progress(struct p2p_data *p2p)
4911 {
4912         if (p2p == NULL)
4913                 return 0;
4914         if (p2p->state == P2P_SEARCH)
4915                 return 2;
4916         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4917 }
4918
4919
4920 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4921                             u8 client_timeout)
4922 {
4923         if (p2p) {
4924                 p2p->go_timeout = go_timeout;
4925                 p2p->client_timeout = client_timeout;
4926         }
4927 }
4928
4929
4930 #ifdef CONFIG_WIFI_DISPLAY
4931
4932 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4933 {
4934         size_t g;
4935         struct p2p_group *group;
4936
4937         for (g = 0; g < p2p->num_groups; g++) {
4938                 group = p2p->groups[g];
4939                 p2p_group_force_beacon_update_ies(group);
4940         }
4941 }
4942
4943
4944 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4945 {
4946         wpabuf_free(p2p->wfd_ie_beacon);
4947         p2p->wfd_ie_beacon = ie;
4948         p2p_update_wfd_ie_groups(p2p);
4949         return 0;
4950 }
4951
4952
4953 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4954 {
4955         wpabuf_free(p2p->wfd_ie_probe_req);
4956         p2p->wfd_ie_probe_req = ie;
4957         return 0;
4958 }
4959
4960
4961 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4962 {
4963         wpabuf_free(p2p->wfd_ie_probe_resp);
4964         p2p->wfd_ie_probe_resp = ie;
4965         p2p_update_wfd_ie_groups(p2p);
4966         return 0;
4967 }
4968
4969
4970 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4971 {
4972         wpabuf_free(p2p->wfd_ie_assoc_req);
4973         p2p->wfd_ie_assoc_req = ie;
4974         return 0;
4975 }
4976
4977
4978 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4979 {
4980         wpabuf_free(p2p->wfd_ie_invitation);
4981         p2p->wfd_ie_invitation = ie;
4982         return 0;
4983 }
4984
4985
4986 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4987 {
4988         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4989         p2p->wfd_ie_prov_disc_req = ie;
4990         return 0;
4991 }
4992
4993
4994 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4995 {
4996         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4997         p2p->wfd_ie_prov_disc_resp = ie;
4998         return 0;
4999 }
5000
5001
5002 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5003 {
5004         wpabuf_free(p2p->wfd_ie_go_neg);
5005         p2p->wfd_ie_go_neg = ie;
5006         return 0;
5007 }
5008
5009
5010 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5011 {
5012         wpabuf_free(p2p->wfd_dev_info);
5013         if (elem) {
5014                 p2p->wfd_dev_info = wpabuf_dup(elem);
5015                 if (p2p->wfd_dev_info == NULL)
5016                         return -1;
5017         } else
5018                 p2p->wfd_dev_info = NULL;
5019
5020         return 0;
5021 }
5022
5023
5024 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5025 {
5026         wpabuf_free(p2p->wfd_assoc_bssid);
5027         if (elem) {
5028                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5029                 if (p2p->wfd_assoc_bssid == NULL)
5030                         return -1;
5031         } else
5032                 p2p->wfd_assoc_bssid = NULL;
5033
5034         return 0;
5035 }
5036
5037
5038 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5039                                   const struct wpabuf *elem)
5040 {
5041         wpabuf_free(p2p->wfd_coupled_sink_info);
5042         if (elem) {
5043                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5044                 if (p2p->wfd_coupled_sink_info == NULL)
5045                         return -1;
5046         } else
5047                 p2p->wfd_coupled_sink_info = NULL;
5048
5049         return 0;
5050 }
5051
5052 #endif /* CONFIG_WIFI_DISPLAY */
5053
5054
5055 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5056                      int max_disc_tu)
5057 {
5058         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5059                 return -1;
5060
5061         p2p->min_disc_int = min_disc_int;
5062         p2p->max_disc_int = max_disc_int;
5063         p2p->max_disc_tu = max_disc_tu;
5064         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5065                 min_disc_int, max_disc_int, max_disc_tu);
5066
5067         return 0;
5068 }
5069
5070
5071 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5072 {
5073         va_list ap;
5074         char buf[500];
5075
5076         if (!p2p->cfg->debug_print)
5077                 return;
5078
5079         va_start(ap, fmt);
5080         vsnprintf(buf, sizeof(buf), fmt, ap);
5081         buf[sizeof(buf) - 1] = '\0';
5082         va_end(ap);
5083         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5084 }
5085
5086
5087 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5088 {
5089         va_list ap;
5090         char buf[500];
5091
5092         if (!p2p->cfg->debug_print)
5093                 return;
5094
5095         va_start(ap, fmt);
5096         vsnprintf(buf, sizeof(buf), fmt, ap);
5097         buf[sizeof(buf) - 1] = '\0';
5098         va_end(ap);
5099         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5100 }
5101
5102
5103 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5104 {
5105         va_list ap;
5106         char buf[500];
5107
5108         if (!p2p->cfg->debug_print)
5109                 return;
5110
5111         va_start(ap, fmt);
5112         vsnprintf(buf, sizeof(buf), fmt, ap);
5113         buf[sizeof(buf) - 1] = '\0';
5114         va_end(ap);
5115         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5116 }
5117
5118
5119 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5120                              void (*peer_callback)(struct p2p_peer_info *peer,
5121                                                    void *user_data),
5122                              void *user_data)
5123 {
5124         struct p2p_device *dev, *n;
5125
5126         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5127                 peer_callback(&dev->info, user_data);
5128         }
5129 }
5130
5131
5132 #ifdef CONFIG_WPS_NFC
5133
5134 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5135                                               int client_freq,
5136                                               const u8 *go_dev_addr,
5137                                               const u8 *ssid, size_t ssid_len)
5138 {
5139         struct wpabuf *buf;
5140         u8 op_class, channel;
5141         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5142
5143         buf = wpabuf_alloc(1000);
5144         if (buf == NULL)
5145                 return NULL;
5146
5147         op_class = p2p->cfg->reg_class;
5148         channel = p2p->cfg->channel;
5149
5150         p2p_buf_add_capability(buf, p2p->dev_capab &
5151                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5152         p2p_buf_add_device_info(buf, p2p, NULL);
5153
5154         if (p2p->num_groups > 0) {
5155                 int freq = p2p_group_get_freq(p2p->groups[0]);
5156                 role = P2P_GO_IN_A_GROUP;
5157                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5158                         p2p_dbg(p2p,
5159                                 "Unknown GO operating frequency %d MHz for NFC handover",
5160                                 freq);
5161                         wpabuf_free(buf);
5162                         return NULL;
5163                 }
5164         } else if (client_freq > 0) {
5165                 role = P2P_CLIENT_IN_A_GROUP;
5166                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5167                         p2p_dbg(p2p,
5168                                 "Unknown client operating frequency %d MHz for NFC handover",
5169                                 client_freq);
5170                         wpabuf_free(buf);
5171                         return NULL;
5172                 }
5173         }
5174
5175         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5176                                        channel, role);
5177
5178         if (p2p->num_groups > 0) {
5179                 /* Limit number of clients to avoid very long message */
5180                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5181                 p2p_group_buf_add_id(p2p->groups[0], buf);
5182         } else if (client_freq > 0 &&
5183                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5184                    ssid && ssid_len > 0) {
5185                 /*
5186                  * Add the optional P2P Group ID to indicate in which group this
5187                  * device is a P2P Client.
5188                  */
5189                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5190         }
5191
5192         return buf;
5193 }
5194
5195
5196 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5197                                            int client_freq,
5198                                            const u8 *go_dev_addr,
5199                                            const u8 *ssid, size_t ssid_len)
5200 {
5201         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5202                                       ssid_len);
5203 }
5204
5205
5206 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5207                                            int client_freq,
5208                                            const u8 *go_dev_addr,
5209                                            const u8 *ssid, size_t ssid_len)
5210 {
5211         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5212                                       ssid_len);
5213 }
5214
5215
5216 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5217                                         struct p2p_nfc_params *params)
5218 {
5219         struct p2p_message msg;
5220         struct p2p_device *dev;
5221         const u8 *p2p_dev_addr;
5222         int freq;
5223         enum p2p_role_indication role;
5224
5225         params->next_step = NO_ACTION;
5226
5227         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5228                                    params->p2p_attr, params->p2p_len, &msg)) {
5229                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5230                 p2p_parse_free(&msg);
5231                 return -1;
5232         }
5233
5234         if (msg.p2p_device_addr)
5235                 p2p_dev_addr = msg.p2p_device_addr;
5236         else if (msg.device_id)
5237                 p2p_dev_addr = msg.device_id;
5238         else {
5239                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5240                 p2p_parse_free(&msg);
5241                 return -1;
5242         }
5243
5244         if (msg.oob_dev_password) {
5245                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5246                           msg.oob_dev_password_len);
5247                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5248         }
5249
5250         dev = p2p_create_device(p2p, p2p_dev_addr);
5251         if (dev == NULL) {
5252                 p2p_parse_free(&msg);
5253                 return -1;
5254         }
5255
5256         params->peer = &dev->info;
5257
5258         os_get_reltime(&dev->last_seen);
5259         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5260         p2p_copy_wps_info(p2p, dev, 0, &msg);
5261
5262         if (!msg.oob_go_neg_channel) {
5263                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5264                 p2p_parse_free(&msg);
5265                 return -1;
5266         }
5267
5268         if (msg.oob_go_neg_channel[3] == 0 &&
5269             msg.oob_go_neg_channel[4] == 0)
5270                 freq = 0;
5271         else
5272                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5273                                            msg.oob_go_neg_channel[4]);
5274         if (freq < 0) {
5275                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5276                 p2p_parse_free(&msg);
5277                 return -1;
5278         }
5279         role = msg.oob_go_neg_channel[5];
5280
5281         if (role == P2P_GO_IN_A_GROUP) {
5282                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5283                 params->go_freq = freq;
5284         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5285                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5286                         freq);
5287                 params->go_freq = freq;
5288         } else
5289                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5290         dev->oob_go_neg_freq = freq;
5291
5292         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5293                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5294                                            p2p->cfg->channel);
5295                 if (freq < 0) {
5296                         p2p_dbg(p2p, "Own listen channel not known");
5297                         p2p_parse_free(&msg);
5298                         return -1;
5299                 }
5300                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5301                 dev->oob_go_neg_freq = freq;
5302         }
5303
5304         if (msg.group_id) {
5305                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5306                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5307                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5308                           params->go_ssid_len);
5309         }
5310
5311         if (dev->flags & P2P_DEV_USER_REJECTED) {
5312                 p2p_dbg(p2p, "Do not report rejected device");
5313                 p2p_parse_free(&msg);
5314                 return 0;
5315         }
5316
5317         if (!(dev->flags & P2P_DEV_REPORTED)) {
5318                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5319                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5320                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5321         }
5322         p2p_parse_free(&msg);
5323
5324         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5325                 params->next_step = BOTH_GO;
5326         else if (role == P2P_GO_IN_A_GROUP)
5327                 params->next_step = JOIN_GROUP;
5328         else if (role == P2P_CLIENT_IN_A_GROUP) {
5329                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5330                 params->next_step = PEER_CLIENT;
5331         } else if (p2p->num_groups > 0)
5332                 params->next_step = AUTH_JOIN;
5333         else if (params->sel)
5334                 params->next_step = INIT_GO_NEG;
5335         else
5336                 params->next_step = RESP_GO_NEG;
5337
5338         return 0;
5339 }
5340
5341
5342 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5343                                       int go_intent,
5344                                       const u8 *own_interface_addr)
5345 {
5346
5347         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5348         if (dev_pw_id == 0) {
5349                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5350                 return;
5351         }
5352
5353         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5354                 dev_pw_id);
5355
5356         p2p->go_intent = go_intent;
5357         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5358 }
5359
5360 #endif /* CONFIG_WPS_NFC */
5361
5362
5363 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5364 {
5365         if (len < 8 || len > 63)
5366                 return -1;
5367         p2p->cfg->passphrase_len = len;
5368         return 0;
5369 }
5370
5371
5372 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5373 {
5374         p2p->vendor_elem = vendor_elem;
5375 }
5376
5377
5378 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5379 {
5380         struct p2p_data *p2p = eloop_ctx;
5381
5382         p2p_dbg(p2p,
5383                 "Timeout on waiting peer to become ready for GO Negotiation");
5384         p2p_go_neg_failed(p2p, -1);
5385 }
5386
5387
5388 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5389                                 const unsigned int *pref_freq_list,
5390                                 unsigned int size)
5391 {
5392         unsigned int i;
5393
5394         if (size > P2P_MAX_PREF_CHANNELS)
5395                 size = P2P_MAX_PREF_CHANNELS;
5396         p2p->num_pref_freq = size;
5397         for (i = 0; i < size; i++) {
5398                 p2p->pref_freq_list[i] = pref_freq_list[i];
5399                 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5400                         i, p2p->pref_freq_list[i]);
5401         }
5402 }