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/defs.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/ieee802_11_common.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "crypto/sha256.h"
  18 #include "crypto/crypto.h"
  19 #include "wps/wps_i.h"
  20 #include "p2p_i.h"
  21 #include "p2p.h"
  22
  23
  24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  27                                      const u8 *sa, const u8 *data, size_t len,
  28                                      int rx_freq);
  29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  30                                       const u8 *sa, const u8 *data,
  31                                       size_t len);
  32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  34
  35
  36 /*
  37  * p2p_scan recovery timeout
  38  *
  39  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  40  * timeout for this to avoid hitting P2P timeout unnecessarily.
  41  */
  42 #define P2P_SCAN_TIMEOUT 35
  43
  44 /**
  45  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  46  * entries will be removed
  47  */
  48 #ifndef P2P_PEER_EXPIRATION_AGE
  49 #define P2P_PEER_EXPIRATION_AGE 60
  50 #endif /* P2P_PEER_EXPIRATION_AGE */
  51
  52
  53 void p2p_expire_peers(struct p2p_data *p2p)
  54 {
  55         struct p2p_device *dev, *n;
  56         struct os_reltime now;
  57         size_t i;
  58
  59         os_get_reltime(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63
  64                 if (dev == p2p->go_neg_peer) {
  65                         /*
  66                          * GO Negotiation is in progress with the peer, so
  67                          * don't expire the peer entry until GO Negotiation
  68                          * fails or times out.
  69                          */
  70                         continue;
  71                 }
  72
  73                 if (p2p->cfg->go_connected &&
  74                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  75                                            dev->info.p2p_device_addr)) {
  76                         /*
  77                          * We are connected as a client to a group in which the
  78                          * peer is the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_reltime(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 for (i = 0; i < p2p->num_groups; i++) {
  85                         if (p2p_group_is_client_connected(
  86                                     p2p->groups[i], dev->info.p2p_device_addr))
  87                                 break;
  88                 }
  89                 if (i < p2p->num_groups) {
  90                         /*
  91                          * The peer is connected as a client in a group where
  92                          * we are the GO, so do not expire the peer entry.
  93                          */
  94                         os_get_reltime(&dev->last_seen);
  95                         continue;
  96                 }
  97
  98                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  99                         MAC2STR(dev->info.p2p_device_addr));
 100                 dl_list_del(&dev->list);
 101                 p2p_device_free(p2p, dev);
 102         }
 103 }
 104
 105
 106 static const char * p2p_state_txt(int state)
 107 {
 108         switch (state) {
 109         case P2P_IDLE:
 110                 return "IDLE";
 111         case P2P_SEARCH:
 112                 return "SEARCH";
 113         case P2P_CONNECT:
 114                 return "CONNECT";
 115         case P2P_CONNECT_LISTEN:
 116                 return "CONNECT_LISTEN";
 117         case P2P_GO_NEG:
 118                 return "GO_NEG";
 119         case P2P_LISTEN_ONLY:
 120                 return "LISTEN_ONLY";
 121         case P2P_WAIT_PEER_CONNECT:
 122                 return "WAIT_PEER_CONNECT";
 123         case P2P_WAIT_PEER_IDLE:
 124                 return "WAIT_PEER_IDLE";
 125         case P2P_SD_DURING_FIND:
 126                 return "SD_DURING_FIND";
 127         case P2P_PROVISIONING:
 128                 return "PROVISIONING";
 129         case P2P_PD_DURING_FIND:
 130                 return "PD_DURING_FIND";
 131         case P2P_INVITE:
 132                 return "INVITE";
 133         case P2P_INVITE_LISTEN:
 134                 return "INVITE_LISTEN";
 135         default:
 136                 return "?";
 137         }
 138 }
 139
 140
 141 const char * p2p_get_state_txt(struct p2p_data *p2p)
 142 {
 143         return p2p_state_txt(p2p->state);
 144 }
 145
 146
 147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 148 {
 149         return p2p ? p2p->p2ps_adv_list : NULL;
 150 }
 151
 152
 153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 154 {
 155         if (p2p && intended_addr)
 156                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 157 }
 158
 159
 160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 161 {
 162         struct p2p_device *dev = NULL;
 163
 164         if (!addr || !p2p)
 165                 return 0;
 166
 167         dev = p2p_get_device(p2p, addr);
 168         if (dev)
 169                 return dev->wps_prov_info;
 170         else
 171                 return 0;
 172 }
 173
 174
 175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 176 {
 177         struct p2p_device *dev = NULL;
 178
 179         if (!addr || !p2p)
 180                 return;
 181
 182         dev = p2p_get_device(p2p, addr);
 183         if (dev)
 184                 dev->wps_prov_info = 0;
 185 }
 186
 187
 188 void p2p_set_state(struct p2p_data *p2p, int new_state)
 189 {
 190         p2p_dbg(p2p, "State %s -> %s",
 191                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 192         p2p->state = new_state;
 193
 194         if (new_state == P2P_IDLE && p2p->pending_channel) {
 195                 p2p_dbg(p2p, "Apply change in listen channel");
 196                 p2p->cfg->reg_class = p2p->pending_reg_class;
 197                 p2p->cfg->channel = p2p->pending_channel;
 198                 p2p->pending_reg_class = 0;
 199                 p2p->pending_channel = 0;
 200         }
 201 }
 202
 203
 204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 205 {
 206         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 207                 p2p_state_txt(p2p->state), sec, usec);
 208         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 209         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 210 }
 211
 212
 213 void p2p_clear_timeout(struct p2p_data *p2p)
 214 {
 215         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 216         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 217 }
 218
 219
 220 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 221 {
 222         struct p2p_go_neg_results res;
 223         struct p2p_device *peer = p2p->go_neg_peer;
 224
 225         if (!peer)
 226                 return;
 227
 228         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 229         if (p2p->state != P2P_SEARCH) {
 230                 /*
 231                  * Clear timeouts related to GO Negotiation if no new p2p_find
 232                  * has been started.
 233                  */
 234                 p2p_clear_timeout(p2p);
 235                 p2p_set_state(p2p, P2P_IDLE);
 236         }
 237
 238         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 239         peer->wps_method = WPS_NOT_READY;
 240         peer->oob_pw_id = 0;
 241         wpabuf_free(peer->go_neg_conf);
 242         peer->go_neg_conf = NULL;
 243         p2p->go_neg_peer = NULL;
 244
 245         os_memset(&res, 0, sizeof(res));
 246         res.status = status;
 247         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 248         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 249         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 250 }
 251
 252
 253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 254 {
 255         unsigned int r, tu;
 256         int freq;
 257         struct wpabuf *ies;
 258
 259         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 260                 p2p_state_txt(p2p->state));
 261
 262         if (p2p->pending_listen_freq) {
 263                 /* We have a pending p2p_listen request */
 264                 p2p_dbg(p2p, "p2p_listen command pending already");
 265                 return;
 266         }
 267
 268         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 269         if (freq < 0) {
 270                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 271                 return;
 272         }
 273
 274         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 275                 r = 0;
 276         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 277               p2p->min_disc_int) * 100;
 278         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 279                 tu = p2p->max_disc_tu;
 280         if (!dev_disc && tu < 100)
 281                 tu = 100; /* Need to wait in non-device discovery use cases */
 282         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 283                 tu = p2p->cfg->max_listen * 1000 / 1024;
 284
 285         if (tu == 0) {
 286                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 287                 p2p_set_timeout(p2p, 0, 0);
 288                 return;
 289         }
 290
 291         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 292         if (ies == NULL)
 293                 return;
 294
 295         p2p->pending_listen_freq = freq;
 296         p2p->pending_listen_sec = 0;
 297         p2p->pending_listen_usec = 1024 * tu;
 298
 299         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 300                     ies) < 0) {
 301                 p2p_dbg(p2p, "Failed to start listen mode");
 302                 p2p->pending_listen_freq = 0;
 303         }
 304         wpabuf_free(ies);
 305 }
 306
 307
 308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 309 {
 310         int freq;
 311         struct wpabuf *ies;
 312
 313         p2p_dbg(p2p, "Going to listen(only) state");
 314
 315         if (p2p->pending_listen_freq) {
 316                 /* We have a pending p2p_listen request */
 317                 p2p_dbg(p2p, "p2p_listen command pending already");
 318                 return -1;
 319         }
 320
 321         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 322         if (freq < 0) {
 323                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 324                 return -1;
 325         }
 326
 327         p2p->pending_listen_sec = timeout / 1000;
 328         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 329
 330         if (p2p->p2p_scan_running) {
 331                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 332                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 333                         return 0;
 334                 }
 335                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 336                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 337                 return 0;
 338         }
 339
 340         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 341         if (ies == NULL)
 342                 return -1;
 343
 344         p2p->pending_listen_freq = freq;
 345
 346         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 347                 p2p_dbg(p2p, "Failed to start listen mode");
 348                 p2p->pending_listen_freq = 0;
 349                 wpabuf_free(ies);
 350                 return -1;
 351         }
 352         wpabuf_free(ies);
 353
 354         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 355
 356         return 0;
 357 }
 358
 359
 360 static void p2p_device_clear_reported(struct p2p_data *p2p)
 361 {
 362         struct p2p_device *dev;
 363         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 364                 dev->flags &= ~P2P_DEV_REPORTED;
 365                 dev->sd_reqs = 0;
 366         }
 367 }
 368
 369
 370 /**
 371  * p2p_get_device - Fetch a peer entry
 372  * @p2p: P2P module context from p2p_init()
 373  * @addr: P2P Device Address of the peer
 374  * Returns: Pointer to the device entry or %NULL if not found
 375  */
 376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 377 {
 378         struct p2p_device *dev;
 379         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 380                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 381                         return dev;
 382         }
 383         return NULL;
 384 }
 385
 386
 387 /**
 388  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 389  * @p2p: P2P module context from p2p_init()
 390  * @addr: P2P Interface Address of the peer
 391  * Returns: Pointer to the device entry or %NULL if not found
 392  */
 393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 394                                              const u8 *addr)
 395 {
 396         struct p2p_device *dev;
 397         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 398                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 399                         return dev;
 400         }
 401         return NULL;
 402 }
 403
 404
 405 /**
 406  * p2p_create_device - Create a peer entry
 407  * @p2p: P2P module context from p2p_init()
 408  * @addr: P2P Device Address of the peer
 409  * Returns: Pointer to the device entry or %NULL on failure
 410  *
 411  * If there is already an entry for the peer, it will be returned instead of
 412  * creating a new one.
 413  */
 414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 415                                              const u8 *addr)
 416 {
 417         struct p2p_device *dev, *oldest = NULL;
 418         size_t count = 0;
 419
 420         dev = p2p_get_device(p2p, addr);
 421         if (dev)
 422                 return dev;
 423
 424         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 425                 count++;
 426                 if (oldest == NULL ||
 427                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 428                         oldest = dev;
 429         }
 430         if (count + 1 > p2p->cfg->max_peers && oldest) {
 431                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 432                 dl_list_del(&oldest->list);
 433                 p2p_device_free(p2p, oldest);
 434         }
 435
 436         dev = os_zalloc(sizeof(*dev));
 437         if (dev == NULL)
 438                 return NULL;
 439         dl_list_add(&p2p->devices, &dev->list);
 440         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 441
 442         return dev;
 443 }
 444
 445
 446 static void p2p_copy_client_info(struct p2p_device *dev,
 447                                  struct p2p_client_info *cli)
 448 {
 449         p2p_copy_filter_devname(dev->info.device_name,
 450                                 sizeof(dev->info.device_name),
 451                                 cli->dev_name, cli->dev_name_len);
 452         dev->info.dev_capab = cli->dev_capab;
 453         dev->info.config_methods = cli->config_methods;
 454         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 455         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 456         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 457                   dev->info.wps_sec_dev_type_list_len);
 458 }
 459
 460
 461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 462                                  const u8 *go_interface_addr, int freq,
 463                                  const u8 *gi, size_t gi_len,
 464                                  struct os_reltime *rx_time)
 465 {
 466         struct p2p_group_info info;
 467         size_t c;
 468         struct p2p_device *dev;
 469
 470         if (gi == NULL)
 471                 return 0;
 472
 473         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 474                 return -1;
 475
 476         /*
 477          * Clear old data for this group; if the devices are still in the
 478          * group, the information will be restored in the loop following this.
 479          */
 480         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 481                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 482                               ETH_ALEN) == 0) {
 483                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 484                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 485                 }
 486         }
 487
 488         for (c = 0; c < info.num_clients; c++) {
 489                 struct p2p_client_info *cli = &info.client[c];
 490                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 491                               ETH_ALEN) == 0)
 492                         continue; /* ignore our own entry */
 493                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 494                 if (dev) {
 495                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 496                                           P2P_DEV_PROBE_REQ_ONLY)) {
 497                                 /*
 498                                  * Update information since we have not
 499                                  * received this directly from the client.
 500                                  */
 501                                 p2p_copy_client_info(dev, cli);
 502                         } else {
 503                                 /*
 504                                  * Need to update P2P Client Discoverability
 505                                  * flag since it is valid only in P2P Group
 506                                  * Info attribute.
 507                                  */
 508                                 dev->info.dev_capab &=
 509                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 510                                 dev->info.dev_capab |=
 511                                         cli->dev_capab &
 512                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 513                         }
 514                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 515                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 516                         }
 517                 } else {
 518                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 519                         if (dev == NULL)
 520                                 continue;
 521                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 522                         p2p_copy_client_info(dev, cli);
 523                         dev->oper_freq = freq;
 524                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 525                                             dev->info.p2p_device_addr,
 526                                             &dev->info, 1);
 527                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 528                 }
 529
 530                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 531                           ETH_ALEN);
 532                 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 533                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 534                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 535                           ETH_ALEN);
 536                 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
 537         }
 538
 539         return 0;
 540 }
 541
 542
 543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 544                               int probe_req, const struct p2p_message *msg)
 545 {
 546         os_memcpy(dev->info.device_name, msg->device_name,
 547                   sizeof(dev->info.device_name));
 548
 549         if (msg->manufacturer &&
 550             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 551                 os_memset(dev->info.manufacturer, 0,
 552                           sizeof(dev->info.manufacturer));
 553                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 554                           msg->manufacturer_len);
 555         }
 556
 557         if (msg->model_name &&
 558             msg->model_name_len < sizeof(dev->info.model_name)) {
 559                 os_memset(dev->info.model_name, 0,
 560                           sizeof(dev->info.model_name));
 561                 os_memcpy(dev->info.model_name, msg->model_name,
 562                           msg->model_name_len);
 563         }
 564
 565         if (msg->model_number &&
 566             msg->model_number_len < sizeof(dev->info.model_number)) {
 567                 os_memset(dev->info.model_number, 0,
 568                           sizeof(dev->info.model_number));
 569                 os_memcpy(dev->info.model_number, msg->model_number,
 570                           msg->model_number_len);
 571         }
 572
 573         if (msg->serial_number &&
 574             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 575                 os_memset(dev->info.serial_number, 0,
 576                           sizeof(dev->info.serial_number));
 577                 os_memcpy(dev->info.serial_number, msg->serial_number,
 578                           msg->serial_number_len);
 579         }
 580
 581         if (msg->pri_dev_type)
 582                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 583                           sizeof(dev->info.pri_dev_type));
 584         else if (msg->wps_pri_dev_type)
 585                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 586                           sizeof(dev->info.pri_dev_type));
 587
 588         if (msg->wps_sec_dev_type_list) {
 589                 os_memcpy(dev->info.wps_sec_dev_type_list,
 590                           msg->wps_sec_dev_type_list,
 591                           msg->wps_sec_dev_type_list_len);
 592                 dev->info.wps_sec_dev_type_list_len =
 593                         msg->wps_sec_dev_type_list_len;
 594         }
 595
 596         if (msg->capability) {
 597                 /*
 598                  * P2P Client Discoverability bit is reserved in all frames
 599                  * that use this function, so do not change its value here.
 600                  */
 601                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 602                 dev->info.dev_capab |= msg->capability[0] &
 603                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 604                 dev->info.group_capab = msg->capability[1];
 605         }
 606
 607         if (msg->ext_listen_timing) {
 608                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 609                 dev->ext_listen_interval =
 610                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 611         }
 612
 613         if (!probe_req) {
 614                 u16 new_config_methods;
 615                 new_config_methods = msg->config_methods ?
 616                         msg->config_methods : msg->wps_config_methods;
 617                 if (new_config_methods &&
 618                     dev->info.config_methods != new_config_methods) {
 619                         p2p_dbg(p2p, "Update peer " MACSTR
 620                                 " config_methods 0x%x -> 0x%x",
 621                                 MAC2STR(dev->info.p2p_device_addr),
 622                                 dev->info.config_methods,
 623                                 new_config_methods);
 624                         dev->info.config_methods = new_config_methods;
 625                 }
 626         }
 627 }
 628
 629
 630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 631                                          size_t ies_len)
 632 {
 633         const u8 *pos, *end;
 634         u8 id, len;
 635
 636         wpabuf_free(dev->info.vendor_elems);
 637         dev->info.vendor_elems = NULL;
 638
 639         end = ies + ies_len;
 640
 641         for (pos = ies; end - pos > 1; pos += len) {
 642                 id = *pos++;
 643                 len = *pos++;
 644
 645                 if (len > end - pos)
 646                         break;
 647
 648                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 649                         continue;
 650
 651                 if (len >= 4) {
 652                         u32 type = WPA_GET_BE32(pos);
 653
 654                         if (type == WPA_IE_VENDOR_TYPE ||
 655                             type == WMM_IE_VENDOR_TYPE ||
 656                             type == WPS_IE_VENDOR_TYPE ||
 657                             type == P2P_IE_VENDOR_TYPE ||
 658                             type == WFD_IE_VENDOR_TYPE)
 659                                 continue;
 660                 }
 661
 662                 /* Unknown vendor element - make raw IE data available */
 663                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 664                         break;
 665                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 666         }
 667 }
 668
 669
 670 static int p2p_compare_wfd_info(struct p2p_device *dev,
 671                               const struct p2p_message *msg)
 672 {
 673         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 674                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 675                         return 1;
 676
 677                 return os_memcmp(dev->info.wfd_subelems->buf,
 678                                  msg->wfd_subelems->buf,
 679                                  dev->info.wfd_subelems->used);
 680         }
 681         if (dev->info.wfd_subelems || msg->wfd_subelems)
 682                 return 1;
 683
 684         return 0;
 685 }
 686
 687
 688 /**
 689  * p2p_add_device - Add peer entries based on scan results or P2P frames
 690  * @p2p: P2P module context from p2p_init()
 691  * @addr: Source address of Beacon or Probe Response frame (may be either
 692  *      P2P Device Address or P2P Interface Address)
 693  * @level: Signal level (signal strength of the received frame from the peer)
 694  * @freq: Frequency on which the Beacon or Probe Response frame was received
 695  * @rx_time: Time when the result was received
 696  * @ies: IEs from the Beacon or Probe Response frame
 697  * @ies_len: Length of ies buffer in octets
 698  * @scan_res: Whether this was based on scan results
 699  * Returns: 0 on success, -1 on failure
 700  *
 701  * If the scan result is for a GO, the clients in the group will also be added
 702  * to the peer table. This function can also be used with some other frames
 703  * like Provision Discovery Request that contains P2P Capability and P2P Device
 704  * Info attributes.
 705  */
 706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 707                    struct os_reltime *rx_time, int level, const u8 *ies,
 708                    size_t ies_len, int scan_res)
 709 {
 710         struct p2p_device *dev;
 711         struct p2p_message msg;
 712         const u8 *p2p_dev_addr;
 713         int wfd_changed;
 714         int i;
 715         struct os_reltime time_now;
 716
 717         os_memset(&msg, 0, sizeof(msg));
 718         if (p2p_parse_ies(ies, ies_len, &msg)) {
 719                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 720                 p2p_parse_free(&msg);
 721                 return -1;
 722         }
 723
 724         if (msg.p2p_device_addr)
 725                 p2p_dev_addr = msg.p2p_device_addr;
 726         else if (msg.device_id)
 727                 p2p_dev_addr = msg.device_id;
 728         else {
 729                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 730                 p2p_parse_free(&msg);
 731                 return -1;
 732         }
 733
 734         if (!is_zero_ether_addr(p2p->peer_filter) &&
 735             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 736                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 737                         " due to peer filter", MAC2STR(p2p_dev_addr));
 738                 p2p_parse_free(&msg);
 739                 return 0;
 740         }
 741
 742         dev = p2p_create_device(p2p, p2p_dev_addr);
 743         if (dev == NULL) {
 744                 p2p_parse_free(&msg);
 745                 return -1;
 746         }
 747
 748         if (rx_time == NULL) {
 749                 os_get_reltime(&time_now);
 750                 rx_time = &time_now;
 751         }
 752
 753         /*
 754          * Update the device entry only if the new peer
 755          * entry is newer than the one previously stored, or if
 756          * the device was previously seen as a P2P Client in a group
 757          * and the new entry isn't older than a threshold.
 758          */
 759         if (dev->last_seen.sec > 0 &&
 760             os_reltime_before(rx_time, &dev->last_seen) &&
 761             (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
 762              os_reltime_expired(&dev->last_seen, rx_time,
 763                                 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
 764                 p2p_dbg(p2p,
 765                         "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
 766                         (unsigned int) rx_time->sec,
 767                         (unsigned int) rx_time->usec,
 768                         (unsigned int) dev->last_seen.sec,
 769                         (unsigned int) dev->last_seen.usec,
 770                         dev->flags);
 771                 p2p_parse_free(&msg);
 772                 return -1;
 773         }
 774
 775         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 776
 777         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
 778                         P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
 779
 780         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 781                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 782         if (msg.ssid &&
 783             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 784             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 785              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 786              != 0)) {
 787                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 788                 dev->oper_ssid_len = msg.ssid[1];
 789         }
 790
 791         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 792                 wpabuf_free(dev->info.p2ps_instance);
 793                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 794                         msg.adv_service_instance, msg.adv_service_instance_len);
 795         }
 796
 797         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 798             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 799                 int ds_freq;
 800                 if (*msg.ds_params == 14)
 801                         ds_freq = 2484;
 802                 else
 803                         ds_freq = 2407 + *msg.ds_params * 5;
 804                 if (freq != ds_freq) {
 805                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 806                                 freq, ds_freq);
 807                         freq = ds_freq;
 808                 }
 809         }
 810
 811         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 812                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 813                         MACSTR " %d -> %d MHz (DS param %d)",
 814                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 815                         freq, msg.ds_params ? *msg.ds_params : -1);
 816         }
 817         if (scan_res) {
 818                 dev->listen_freq = freq;
 819                 if (msg.group_info)
 820                         dev->oper_freq = freq;
 821         }
 822         dev->info.level = level;
 823
 824         p2p_copy_wps_info(p2p, dev, 0, &msg);
 825
 826         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 827                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 828                 dev->info.wps_vendor_ext[i] = NULL;
 829         }
 830
 831         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 832                 if (msg.wps_vendor_ext[i] == NULL)
 833                         break;
 834                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 835                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 836                 if (dev->info.wps_vendor_ext[i] == NULL)
 837                         break;
 838         }
 839
 840         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 841
 842         if (msg.wfd_subelems) {
 843                 wpabuf_free(dev->info.wfd_subelems);
 844                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 845         }
 846
 847         if (scan_res) {
 848                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 849                                       msg.group_info, msg.group_info_len,
 850                                       rx_time);
 851         }
 852
 853         p2p_parse_free(&msg);
 854
 855         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 856
 857         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 858             (!msg.adv_service_instance ||
 859              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 860                 return 0;
 861
 862         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 863                 freq, (unsigned int) rx_time->sec,
 864                 (unsigned int) rx_time->usec);
 865         if (dev->flags & P2P_DEV_USER_REJECTED) {
 866                 p2p_dbg(p2p, "Do not report rejected device");
 867                 return 0;
 868         }
 869
 870         if (dev->info.config_methods == 0 &&
 871             (freq == 2412 || freq == 2437 || freq == 2462)) {
 872                 /*
 873                  * If we have only seen a Beacon frame from a GO, we do not yet
 874                  * know what WPS config methods it supports. Since some
 875                  * applications use config_methods value from P2P-DEVICE-FOUND
 876                  * events, postpone reporting this peer until we've fully
 877                  * discovered its capabilities.
 878                  *
 879                  * At least for now, do this only if the peer was detected on
 880                  * one of the social channels since that peer can be easily be
 881                  * found again and there are no limitations of having to use
 882                  * passive scan on this channels, so this can be done through
 883                  * Probe Response frame that includes the config_methods
 884                  * information.
 885                  */
 886                 p2p_dbg(p2p, "Do not report peer " MACSTR
 887                         " with unknown config methods", MAC2STR(addr));
 888                 return 0;
 889         }
 890
 891         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 892                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 893         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 894
 895         if (msg.adv_service_instance)
 896                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 897
 898         return 0;
 899 }
 900
 901
 902 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 903 {
 904         int i;
 905
 906         if (p2p->go_neg_peer == dev) {
 907                 /*
 908                  * If GO Negotiation is in progress, report that it has failed.
 909                  */
 910                 p2p_go_neg_failed(p2p, -1);
 911         }
 912         if (p2p->invite_peer == dev)
 913                 p2p->invite_peer = NULL;
 914         if (p2p->sd_peer == dev)
 915                 p2p->sd_peer = NULL;
 916         if (p2p->pending_client_disc_go == dev)
 917                 p2p->pending_client_disc_go = NULL;
 918
 919         /* dev_lost() device, but only if it was previously dev_found() */
 920         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 921                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 922                                    dev->info.p2p_device_addr);
 923
 924         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 925                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 926                 dev->info.wps_vendor_ext[i] = NULL;
 927         }
 928
 929         wpabuf_free(dev->info.wfd_subelems);
 930         wpabuf_free(dev->info.vendor_elems);
 931         wpabuf_free(dev->go_neg_conf);
 932         wpabuf_free(dev->info.p2ps_instance);
 933
 934         os_free(dev);
 935 }
 936
 937
 938 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 939 {
 940         struct p2p_channels *c;
 941         struct p2p_reg_class *cla;
 942         size_t cl, ch;
 943         int found = 0;
 944         u8 reg_class;
 945         u8 channel;
 946         int freq;
 947
 948         c = &p2p->cfg->channels;
 949         for (cl = 0; cl < c->reg_classes; cl++) {
 950                 cla = &c->reg_class[cl];
 951                 if (cla->reg_class != p2p->last_prog_scan_class)
 952                         continue;
 953                 for (ch = 0; ch < cla->channels; ch++) {
 954                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 955                                 found = 1;
 956                                 break;
 957                         }
 958                 }
 959                 if (found)
 960                         break;
 961         }
 962
 963         if (!found) {
 964                 /* Start from beginning */
 965                 reg_class = c->reg_class[0].reg_class;
 966                 channel = c->reg_class[0].channel[0];
 967         } else {
 968                 /* Pick the next channel */
 969                 ch++;
 970                 if (ch == cla->channels) {
 971                         cl++;
 972                         if (cl == c->reg_classes)
 973                                 cl = 0;
 974                         ch = 0;
 975                 }
 976                 reg_class = c->reg_class[cl].reg_class;
 977                 channel = c->reg_class[cl].channel[ch];
 978         }
 979
 980         freq = p2p_channel_to_freq(reg_class, channel);
 981         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 982                 reg_class, channel, freq);
 983         p2p->last_prog_scan_class = reg_class;
 984         p2p->last_prog_scan_chan = channel;
 985
 986         if (freq == 2412 || freq == 2437 || freq == 2462)
 987                 return 0; /* No need to add social channels */
 988         return freq;
 989 }
 990
 991
 992 static void p2p_search(struct p2p_data *p2p)
 993 {
 994         int freq = 0;
 995         enum p2p_scan_type type;
 996         u16 pw_id = DEV_PW_DEFAULT;
 997         int res;
 998
 999         if (p2p->drv_in_listen) {
1000                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1001                 return;
1002         }
1003         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1004
1005         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1006             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1007                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1008                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1009         } else {
1010                 type = P2P_SCAN_SOCIAL;
1011                 p2p_dbg(p2p, "Starting search");
1012         }
1013
1014         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1015                                  p2p->num_req_dev_types, p2p->req_dev_types,
1016                                  p2p->find_dev_id, pw_id);
1017         if (res < 0) {
1018                 p2p_dbg(p2p, "Scan request schedule failed");
1019                 p2p_continue_find(p2p);
1020         }
1021 }
1022
1023
1024 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1025 {
1026         struct p2p_data *p2p = eloop_ctx;
1027         p2p_dbg(p2p, "Find timeout -> stop");
1028         p2p_stop_find(p2p);
1029 }
1030
1031
1032 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1033 {
1034         if (status != 0) {
1035                 p2p_dbg(p2p, "Scan request failed");
1036                 /* Do continue find even for the first p2p_find_scan */
1037                 p2p_continue_find(p2p);
1038         } else {
1039                 p2p_dbg(p2p, "Running p2p_scan");
1040                 p2p->p2p_scan_running = 1;
1041                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1042                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1043                                        p2p, NULL);
1044         }
1045 }
1046
1047
1048 static int p2p_run_after_scan(struct p2p_data *p2p)
1049 {
1050         struct p2p_device *dev;
1051         enum p2p_after_scan op;
1052
1053         if (p2p->after_scan_tx) {
1054                 p2p->after_scan_tx_in_progress = 1;
1055                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1056                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1057                                       p2p->after_scan_tx->freq,
1058                                       p2p->after_scan_tx->dst,
1059                                       p2p->after_scan_tx->src,
1060                                       p2p->after_scan_tx->bssid,
1061                                       (u8 *) (p2p->after_scan_tx + 1),
1062                                       p2p->after_scan_tx->len,
1063                                       p2p->after_scan_tx->wait_time);
1064                 os_free(p2p->after_scan_tx);
1065                 p2p->after_scan_tx = NULL;
1066                 return 1;
1067         }
1068
1069         op = p2p->start_after_scan;
1070         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1071         switch (op) {
1072         case P2P_AFTER_SCAN_NOTHING:
1073                 break;
1074         case P2P_AFTER_SCAN_LISTEN:
1075                 p2p_dbg(p2p, "Start previously requested Listen state");
1076                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1077                            p2p->pending_listen_usec / 1000);
1078                 return 1;
1079         case P2P_AFTER_SCAN_CONNECT:
1080                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1081                         MAC2STR(p2p->after_scan_peer));
1082                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1083                 if (dev == NULL) {
1084                         p2p_dbg(p2p, "Peer not known anymore");
1085                         break;
1086                 }
1087                 p2p_connect_send(p2p, dev);
1088                 return 1;
1089         }
1090
1091         return 0;
1092 }
1093
1094
1095 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1096 {
1097         struct p2p_data *p2p = eloop_ctx;
1098         int running;
1099         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1100         running = p2p->p2p_scan_running;
1101         /* Make sure we recover from missed scan results callback */
1102         p2p->p2p_scan_running = 0;
1103
1104         if (running)
1105                 p2p_run_after_scan(p2p);
1106 }
1107
1108
1109 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1110 {
1111         p2p->num_req_dev_types = 0;
1112         os_free(p2p->req_dev_types);
1113         p2p->req_dev_types = NULL;
1114 }
1115
1116
1117 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1118 {
1119         u8 buf[SHA256_MAC_LEN];
1120         char str_buf[256];
1121         const u8 *adv_array;
1122         size_t i, adv_len;
1123
1124         if (!str || !hash)
1125                 return 0;
1126
1127         if (!str[0]) {
1128                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1129                 return 1;
1130         }
1131
1132         adv_array = (u8 *) str_buf;
1133         adv_len = os_strlen(str);
1134         if (adv_len >= sizeof(str_buf))
1135                 return 0;
1136
1137         for (i = 0; i < adv_len; i++) {
1138                 if (str[i] >= 'A' && str[i] <= 'Z')
1139                         str_buf[i] = str[i] - 'A' + 'a';
1140                 else
1141                         str_buf[i] = str[i];
1142         }
1143
1144         if (sha256_vector(1, &adv_array, &adv_len, buf))
1145                 return 0;
1146
1147         os_memcpy(hash, buf, P2PS_HASH_LEN);
1148         return 1;
1149 }
1150
1151
1152 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1153              enum p2p_discovery_type type,
1154              unsigned int num_req_dev_types, const u8 *req_dev_types,
1155              const u8 *dev_id, unsigned int search_delay,
1156              u8 seek_count, const char **seek, int freq)
1157 {
1158         int res;
1159
1160         p2p_dbg(p2p, "Starting find (type=%d)", type);
1161         os_get_reltime(&p2p->find_start);
1162         if (p2p->p2p_scan_running) {
1163                 p2p_dbg(p2p, "p2p_scan is already running");
1164         }
1165
1166         p2p_free_req_dev_types(p2p);
1167         if (req_dev_types && num_req_dev_types) {
1168                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1169                                                WPS_DEV_TYPE_LEN);
1170                 if (p2p->req_dev_types == NULL)
1171                         return -1;
1172                 os_memcpy(p2p->req_dev_types, req_dev_types,
1173                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1174                 p2p->num_req_dev_types = num_req_dev_types;
1175         }
1176
1177         if (dev_id) {
1178                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1179                 p2p->find_dev_id = p2p->find_dev_id_buf;
1180         } else
1181                 p2p->find_dev_id = NULL;
1182
1183         if (seek_count == 0 || !seek) {
1184                 /* Not an ASP search */
1185                 p2p->p2ps_seek = 0;
1186         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1187                 /*
1188                  * An empty seek string means no hash values, but still an ASP
1189                  * search.
1190                  */
1191                 p2p_dbg(p2p, "ASP search");
1192                 p2p->p2ps_seek_count = 0;
1193                 p2p->p2ps_seek = 1;
1194         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1195                 u8 buf[P2PS_HASH_LEN];
1196                 int i, count = 0;
1197
1198                 for (i = 0; i < seek_count; i++) {
1199                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1200                                 continue;
1201
1202                         p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1203                                 seek[i], MAC2STR(buf));
1204                         os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1205                                   buf, P2PS_HASH_LEN);
1206                         count++;
1207                 }
1208
1209                 p2p->p2ps_seek_count = count;
1210                 p2p->p2ps_seek = 1;
1211         } else {
1212                 p2p->p2ps_seek_count = 0;
1213                 p2p->p2ps_seek = 1;
1214         }
1215
1216         /* Special case to perform wildcard search */
1217         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1218                 p2p->p2ps_seek_count = 1;
1219                 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1220                           P2PS_HASH_LEN);
1221         }
1222
1223         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1224         p2p_clear_timeout(p2p);
1225         if (p2p->pending_listen_freq) {
1226                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1227                 p2p->pending_listen_freq = 0;
1228         }
1229         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1230         p2p->find_type = type;
1231         p2p_device_clear_reported(p2p);
1232         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1233         p2p_set_state(p2p, P2P_SEARCH);
1234         p2p->search_delay = search_delay;
1235         p2p->in_search_delay = 0;
1236         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1237         p2p->last_p2p_find_timeout = timeout;
1238         if (timeout)
1239                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1240                                        p2p, NULL);
1241         switch (type) {
1242         case P2P_FIND_START_WITH_FULL:
1243                 if (freq > 0) {
1244                         /*
1245                          * Start with the specified channel and then move to
1246                          * social channels only scans.
1247                          */
1248                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1249                                                  P2P_SCAN_SPECIFIC, freq,
1250                                                  p2p->num_req_dev_types,
1251                                                  p2p->req_dev_types, dev_id,
1252                                                  DEV_PW_DEFAULT);
1253                         break;
1254                 }
1255                 /* fall through */
1256         case P2P_FIND_PROGRESSIVE:
1257                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1258                                          p2p->num_req_dev_types,
1259                                          p2p->req_dev_types, dev_id,
1260                                          DEV_PW_DEFAULT);
1261                 break;
1262         case P2P_FIND_ONLY_SOCIAL:
1263                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1264                                          p2p->num_req_dev_types,
1265                                          p2p->req_dev_types, dev_id,
1266                                          DEV_PW_DEFAULT);
1267                 break;
1268         default:
1269                 return -1;
1270         }
1271
1272         if (res != 0 && p2p->p2p_scan_running) {
1273                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1274                 /* wait for the previous p2p_scan to complete */
1275                 res = 0; /* do not report failure */
1276         } else if (res != 0) {
1277                 p2p_dbg(p2p, "Failed to start p2p_scan");
1278                 p2p_set_state(p2p, P2P_IDLE);
1279                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1280         }
1281
1282         return res;
1283 }
1284
1285
1286 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1287 {
1288         p2p_dbg(p2p, "Stopping find");
1289         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1290         p2p_clear_timeout(p2p);
1291         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1292                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1293
1294         p2p->p2ps_seek_count = 0;
1295
1296         p2p_set_state(p2p, P2P_IDLE);
1297         p2p_free_req_dev_types(p2p);
1298         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1299         if (p2p->go_neg_peer)
1300                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1301         p2p->go_neg_peer = NULL;
1302         p2p->sd_peer = NULL;
1303         p2p->invite_peer = NULL;
1304         p2p_stop_listen_for_freq(p2p, freq);
1305         p2p->send_action_in_progress = 0;
1306 }
1307
1308
1309 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1310 {
1311         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1312                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1313                 return;
1314         }
1315         if (p2p->in_listen) {
1316                 p2p->in_listen = 0;
1317                 p2p_clear_timeout(p2p);
1318         }
1319         if (p2p->drv_in_listen) {
1320                 /*
1321                  * The driver may not deliver callback to p2p_listen_end()
1322                  * when the operation gets canceled, so clear the internal
1323                  * variable that is tracking driver state.
1324                  */
1325                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1326                 p2p->drv_in_listen = 0;
1327         }
1328         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1329 }
1330
1331
1332 void p2p_stop_listen(struct p2p_data *p2p)
1333 {
1334         if (p2p->state != P2P_LISTEN_ONLY) {
1335                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1336                 return;
1337         }
1338
1339         p2p_stop_listen_for_freq(p2p, 0);
1340         p2p_set_state(p2p, P2P_IDLE);
1341 }
1342
1343
1344 void p2p_stop_find(struct p2p_data *p2p)
1345 {
1346         p2p->pending_listen_freq = 0;
1347         p2p_stop_find_for_freq(p2p, 0);
1348 }
1349
1350
1351 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1352                                     unsigned int force_freq,
1353                                     unsigned int pref_freq, int go)
1354 {
1355         u8 op_class, op_channel;
1356         unsigned int freq = force_freq ? force_freq : pref_freq;
1357
1358         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1359                 force_freq, pref_freq, go);
1360         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1361                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1362                 return -1;
1363         }
1364
1365         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1366             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1367                                           op_channel))) {
1368                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1369                         freq, op_class, op_channel);
1370                 return -1;
1371         }
1372
1373         p2p->op_reg_class = op_class;
1374         p2p->op_channel = op_channel;
1375
1376         if (force_freq) {
1377                 p2p->channels.reg_classes = 1;
1378                 p2p->channels.reg_class[0].channels = 1;
1379                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1380                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1381         } else {
1382                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1383                           sizeof(struct p2p_channels));
1384         }
1385
1386         return 0;
1387 }
1388
1389
1390 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1391 {
1392         u8 op_class, op_channel;
1393         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1394         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1395         const int op_classes_vht[] = { 128, 0 };
1396
1397         p2p_dbg(p2p, "Prepare channel best");
1398
1399         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1400             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1401             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1402             == 0) {
1403                 p2p_dbg(p2p, "Select best overall 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_5 > 0 &&
1407                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1408                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1409                    == 0) {
1410                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1411                 p2p->op_reg_class = op_class;
1412                 p2p->op_channel = op_channel;
1413         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1414                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1415                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1416                                        &op_channel) == 0) {
1417                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1418                 p2p->op_reg_class = op_class;
1419                 p2p->op_channel = op_channel;
1420         } else if (p2p->cfg->num_pref_chan > 0 &&
1421                    p2p_channels_includes(&p2p->cfg->channels,
1422                                          p2p->cfg->pref_chan[0].op_class,
1423                                          p2p->cfg->pref_chan[0].chan)) {
1424                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1425                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1426                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1427         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1428                                       &p2p->op_reg_class, &p2p->op_channel) ==
1429                    0) {
1430                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1431                         p2p->op_reg_class, p2p->op_channel);
1432         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1433                                       &p2p->op_reg_class, &p2p->op_channel) ==
1434                    0) {
1435                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1436                         p2p->op_reg_class, p2p->op_channel);
1437         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1438                                       &p2p->op_reg_class, &p2p->op_channel) ==
1439                    0) {
1440                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1441                         p2p->op_reg_class, p2p->op_channel);
1442         } else if (p2p_channels_includes(&p2p->cfg->channels,
1443                                          p2p->cfg->op_reg_class,
1444                                          p2p->cfg->op_channel)) {
1445                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1446                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1447                 p2p->op_channel = p2p->cfg->op_channel;
1448         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1449                                              &p2p->op_reg_class,
1450                                              &p2p->op_channel) == 0) {
1451                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1452                         p2p->op_reg_class, p2p->op_channel);
1453         } else {
1454                 /* Select any random available channel from the first available
1455                  * operating class */
1456                 p2p_channel_select(&p2p->cfg->channels, NULL,
1457                                    &p2p->op_reg_class,
1458                                    &p2p->op_channel);
1459                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1460                         p2p->op_channel, p2p->op_reg_class);
1461         }
1462
1463         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1464                   sizeof(struct p2p_channels));
1465 }
1466
1467
1468 /**
1469  * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1470  * @p2p: P2P module context from p2p_init()
1471  * @dev: Selected peer device
1472  * @force_freq: Forced frequency in MHz or 0 if not forced
1473  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1474  * @go: Whether the local end will be forced to be GO
1475  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1476  *
1477  * This function is used to do initial operating channel selection for GO
1478  * Negotiation prior to having received peer information or for P2PS PD
1479  * signalling. The selected channel may be further optimized in
1480  * p2p_reselect_channel() once the peer information is available.
1481  */
1482 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1483                         unsigned int force_freq, unsigned int pref_freq, int go)
1484 {
1485         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1486                 force_freq, pref_freq, go);
1487         if (force_freq || pref_freq) {
1488                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1489                     0)
1490                         return -1;
1491         } else {
1492                 p2p_prepare_channel_best(p2p);
1493         }
1494         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1495         if (go)
1496                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1497         else if (!force_freq)
1498                 p2p_channels_union_inplace(&p2p->channels,
1499                                            &p2p->cfg->cli_channels);
1500         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1501
1502         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1503                 p2p->op_reg_class, p2p->op_channel,
1504                 force_freq ? " (forced)" : "");
1505
1506         if (force_freq)
1507                 dev->flags |= P2P_DEV_FORCE_FREQ;
1508         else
1509                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1510
1511         return 0;
1512 }
1513
1514
1515 static void p2p_set_dev_persistent(struct p2p_device *dev,
1516                                    int persistent_group)
1517 {
1518         switch (persistent_group) {
1519         case 0:
1520                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1521                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1522                 break;
1523         case 1:
1524                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1525                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1526                 break;
1527         case 2:
1528                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1529                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1530                 break;
1531         }
1532 }
1533
1534
1535 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1536                 enum p2p_wps_method wps_method,
1537                 int go_intent, const u8 *own_interface_addr,
1538                 unsigned int force_freq, int persistent_group,
1539                 const u8 *force_ssid, size_t force_ssid_len,
1540                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1541 {
1542         struct p2p_device *dev;
1543
1544         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1545                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1546                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1547                 "oob_pw_id=%u",
1548                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1549                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1550
1551         dev = p2p_get_device(p2p, peer_addr);
1552         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1553                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1554                         MAC2STR(peer_addr));
1555                 return -1;
1556         }
1557
1558         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1559                                 go_intent == 15) < 0)
1560                 return -1;
1561
1562         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1563                 if (!(dev->info.dev_capab &
1564                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1565                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1566                                 " that is in a group and is not discoverable",
1567                                 MAC2STR(peer_addr));
1568                         return -1;
1569                 }
1570                 if (dev->oper_freq <= 0) {
1571                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1572                                 " with incomplete information",
1573                                 MAC2STR(peer_addr));
1574                         return -1;
1575                 }
1576
1577                 /*
1578                  * First, try to connect directly. If the peer does not
1579                  * acknowledge frames, assume it is sleeping and use device
1580                  * discoverability via the GO at that point.
1581                  */
1582         }
1583
1584         p2p->ssid_set = 0;
1585         if (force_ssid) {
1586                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1587                                   force_ssid, force_ssid_len);
1588                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1589                 p2p->ssid_len = force_ssid_len;
1590                 p2p->ssid_set = 1;
1591         }
1592
1593         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1594         dev->flags &= ~P2P_DEV_USER_REJECTED;
1595         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1596         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1597         if (pd_before_go_neg)
1598                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1599         else {
1600                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1601                 /*
1602                  * Assign dialog token and tie breaker here to use the same
1603                  * values in each retry within the same GO Negotiation exchange.
1604                  */
1605                 dev->dialog_token++;
1606                 if (dev->dialog_token == 0)
1607                         dev->dialog_token = 1;
1608                 dev->tie_breaker = p2p->next_tie_breaker;
1609                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1610         }
1611         dev->connect_reqs = 0;
1612         dev->go_neg_req_sent = 0;
1613         dev->go_state = UNKNOWN_GO;
1614         p2p_set_dev_persistent(dev, persistent_group);
1615         p2p->go_intent = go_intent;
1616         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1617
1618         if (p2p->state != P2P_IDLE)
1619                 p2p_stop_find(p2p);
1620
1621         if (p2p->after_scan_tx) {
1622                 /*
1623                  * We need to drop the pending frame to avoid issues with the
1624                  * new GO Negotiation, e.g., when the pending frame was from a
1625                  * previous attempt at starting a GO Negotiation.
1626                  */
1627                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1628                 os_free(p2p->after_scan_tx);
1629                 p2p->after_scan_tx = NULL;
1630         }
1631
1632         dev->wps_method = wps_method;
1633         dev->oob_pw_id = oob_pw_id;
1634         dev->status = P2P_SC_SUCCESS;
1635
1636         if (p2p->p2p_scan_running) {
1637                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1638                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1639                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1640                 return 0;
1641         }
1642         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1643
1644         return p2p_connect_send(p2p, dev);
1645 }
1646
1647
1648 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1649                   enum p2p_wps_method wps_method,
1650                   int go_intent, const u8 *own_interface_addr,
1651                   unsigned int force_freq, int persistent_group,
1652                   const u8 *force_ssid, size_t force_ssid_len,
1653                   unsigned int pref_freq, u16 oob_pw_id)
1654 {
1655         struct p2p_device *dev;
1656
1657         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1658                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1659                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1660                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1661                 wps_method, persistent_group, oob_pw_id);
1662
1663         dev = p2p_get_device(p2p, peer_addr);
1664         if (dev == NULL) {
1665                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1666                         MAC2STR(peer_addr));
1667                 return -1;
1668         }
1669
1670         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1671                                 15) < 0)
1672                 return -1;
1673
1674         p2p->ssid_set = 0;
1675         if (force_ssid) {
1676                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1677                                   force_ssid, force_ssid_len);
1678                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1679                 p2p->ssid_len = force_ssid_len;
1680                 p2p->ssid_set = 1;
1681         }
1682
1683         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1684         dev->flags &= ~P2P_DEV_USER_REJECTED;
1685         dev->go_neg_req_sent = 0;
1686         dev->go_state = UNKNOWN_GO;
1687         p2p_set_dev_persistent(dev, persistent_group);
1688         p2p->go_intent = go_intent;
1689         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1690
1691         dev->wps_method = wps_method;
1692         dev->oob_pw_id = oob_pw_id;
1693         dev->status = P2P_SC_SUCCESS;
1694
1695         return 0;
1696 }
1697
1698
1699 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1700                       struct p2p_device *dev, struct p2p_message *msg)
1701 {
1702         os_get_reltime(&dev->last_seen);
1703
1704         p2p_copy_wps_info(p2p, dev, 0, msg);
1705
1706         if (msg->listen_channel) {
1707                 int freq;
1708                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1709                                            msg->listen_channel[4]);
1710                 if (freq < 0) {
1711                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1712                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1713                                 msg->listen_channel[0],
1714                                 msg->listen_channel[1],
1715                                 msg->listen_channel[2],
1716                                 msg->listen_channel[3],
1717                                 msg->listen_channel[4]);
1718                 } else {
1719                         p2p_dbg(p2p, "Update peer " MACSTR
1720                                 " Listen channel: %u -> %u MHz",
1721                                 MAC2STR(dev->info.p2p_device_addr),
1722                                 dev->listen_freq, freq);
1723                         dev->listen_freq = freq;
1724                 }
1725         }
1726
1727         if (msg->wfd_subelems) {
1728                 wpabuf_free(dev->info.wfd_subelems);
1729                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1730         }
1731
1732         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1733                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1734                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1735         } else {
1736                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1737                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1738                         "listen_freq=%d",
1739                         MAC2STR(dev->info.p2p_device_addr),
1740                         dev->info.dev_capab, dev->info.group_capab,
1741                         dev->info.device_name, dev->listen_freq);
1742         }
1743
1744         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1745
1746         if (dev->flags & P2P_DEV_USER_REJECTED) {
1747                 p2p_dbg(p2p, "Do not report rejected device");
1748                 return;
1749         }
1750
1751         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1752                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1753         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1754 }
1755
1756
1757 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1758 {
1759         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1760         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1761         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1762                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1763         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1764 }
1765
1766
1767 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1768 {
1769         if (p2p->ssid_set) {
1770                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1771                 params->ssid_len = p2p->ssid_len;
1772         } else {
1773                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1774         }
1775         p2p->ssid_set = 0;
1776
1777         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1778         return 0;
1779 }
1780
1781
1782 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1783 {
1784         struct p2p_go_neg_results res;
1785         int go = peer->go_state == LOCAL_GO;
1786         struct p2p_channels intersection;
1787
1788         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1789                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1790
1791         os_memset(&res, 0, sizeof(res));
1792         res.role_go = go;
1793         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1794         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1795         res.wps_method = peer->wps_method;
1796         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1797                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1798                         res.persistent_group = 2;
1799                 else
1800                         res.persistent_group = 1;
1801         }
1802
1803         if (go) {
1804                 /* Setup AP mode for WPS provisioning */
1805                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1806                                                p2p->op_channel);
1807                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1808                 res.ssid_len = p2p->ssid_len;
1809                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1810         } else {
1811                 res.freq = peer->oper_freq;
1812                 if (p2p->ssid_len) {
1813                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1814                         res.ssid_len = p2p->ssid_len;
1815                 }
1816         }
1817
1818         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1819         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1820         p2p_channels_intersect(&p2p->channels, &peer->channels,
1821                                &intersection);
1822         if (go) {
1823                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1824                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1825                                   &intersection);
1826         }
1827
1828         p2p_channels_to_freqs(&intersection, res.freq_list,
1829                               P2P_MAX_CHANNELS);
1830
1831         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1832
1833         p2p_clear_timeout(p2p);
1834         p2p->ssid_set = 0;
1835         peer->go_neg_req_sent = 0;
1836         peer->wps_method = WPS_NOT_READY;
1837         peer->oob_pw_id = 0;
1838         wpabuf_free(peer->go_neg_conf);
1839         peer->go_neg_conf = NULL;
1840
1841         p2p_set_state(p2p, P2P_PROVISIONING);
1842         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1843 }
1844
1845
1846 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1847                               const u8 *data, size_t len, int rx_freq)
1848 {
1849         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1850         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1851
1852         if (len < 1)
1853                 return;
1854
1855         switch (data[0]) {
1856         case P2P_GO_NEG_REQ:
1857                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1858                 break;
1859         case P2P_GO_NEG_RESP:
1860                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1861                 break;
1862         case P2P_GO_NEG_CONF:
1863                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1864                 break;
1865         case P2P_INVITATION_REQ:
1866                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1867                                            rx_freq);
1868                 break;
1869         case P2P_INVITATION_RESP:
1870                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1871                 break;
1872         case P2P_PROV_DISC_REQ:
1873                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1874                 break;
1875         case P2P_PROV_DISC_RESP:
1876                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1877                 break;
1878         case P2P_DEV_DISC_REQ:
1879                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1880                 break;
1881         case P2P_DEV_DISC_RESP:
1882                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1883                 break;
1884         default:
1885                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1886                         data[0]);
1887                 break;
1888         }
1889 }
1890
1891
1892 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1893                                  const u8 *sa, const u8 *bssid, const u8 *data,
1894                                  size_t len, int freq)
1895 {
1896         if (len < 1)
1897                 return;
1898
1899         switch (data[0]) {
1900         case WLAN_PA_VENDOR_SPECIFIC:
1901                 data++;
1902                 len--;
1903                 if (len < 4)
1904                         return;
1905                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1906                         return;
1907
1908                 data += 4;
1909                 len -= 4;
1910
1911                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1912                 break;
1913         case WLAN_PA_GAS_INITIAL_REQ:
1914                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1915                 break;
1916         case WLAN_PA_GAS_INITIAL_RESP:
1917                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1918                 break;
1919         case WLAN_PA_GAS_COMEBACK_REQ:
1920                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1921                 break;
1922         case WLAN_PA_GAS_COMEBACK_RESP:
1923                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1924                 break;
1925         }
1926 }
1927
1928
1929 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1930                    const u8 *bssid, u8 category,
1931                    const u8 *data, size_t len, int freq)
1932 {
1933         if (category == WLAN_ACTION_PUBLIC) {
1934                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1935                 return;
1936         }
1937
1938         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1939                 return;
1940
1941         if (len < 4)
1942                 return;
1943
1944         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1945                 return;
1946         data += 4;
1947         len -= 4;
1948
1949         /* P2P action frame */
1950         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1951         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1952
1953         if (len < 1)
1954                 return;
1955         switch (data[0]) {
1956         case P2P_NOA:
1957                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1958                 /* TODO */
1959                 break;
1960         case P2P_PRESENCE_REQ:
1961                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1962                 break;
1963         case P2P_PRESENCE_RESP:
1964                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1965                 break;
1966         case P2P_GO_DISC_REQ:
1967                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1968                 break;
1969         default:
1970                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1971                 break;
1972         }
1973 }
1974
1975
1976 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1977 {
1978         struct p2p_data *p2p = eloop_ctx;
1979         if (p2p->go_neg_peer == NULL)
1980                 return;
1981         if (p2p->pending_listen_freq) {
1982                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1983                 p2p->pending_listen_freq = 0;
1984         }
1985         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1986         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1987         /*
1988          * Set new timeout to make sure a previously set one does not expire
1989          * too quickly while waiting for the GO Negotiation to complete.
1990          */
1991         p2p_set_timeout(p2p, 0, 500000);
1992         p2p_connect_send(p2p, p2p->go_neg_peer);
1993 }
1994
1995
1996 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1997 {
1998         struct p2p_data *p2p = eloop_ctx;
1999         if (p2p->invite_peer == NULL)
2000                 return;
2001         if (p2p->pending_listen_freq) {
2002                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2003                 p2p->pending_listen_freq = 0;
2004         }
2005         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2006         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2007                         p2p->invite_dev_pw_id);
2008 }
2009
2010
2011 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2012                                        const u8 *ie, size_t ie_len)
2013 {
2014         struct p2p_message msg;
2015         struct p2p_device *dev;
2016
2017         os_memset(&msg, 0, sizeof(msg));
2018         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2019         {
2020                 p2p_parse_free(&msg);
2021                 return; /* not a P2P probe */
2022         }
2023
2024         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2025             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2026             != 0) {
2027                 /* The Probe Request is not part of P2P Device Discovery. It is
2028                  * not known whether the source address of the frame is the P2P
2029                  * Device Address or P2P Interface Address. Do not add a new
2030                  * peer entry based on this frames.
2031                  */
2032                 p2p_parse_free(&msg);
2033                 return;
2034         }
2035
2036         dev = p2p_get_device(p2p, addr);
2037         if (dev) {
2038                 if (msg.listen_channel) {
2039                         int freq;
2040
2041                         if (dev->country[0] == 0)
2042                                 os_memcpy(dev->country, msg.listen_channel, 3);
2043
2044                         freq = p2p_channel_to_freq(msg.listen_channel[3],
2045                                                    msg.listen_channel[4]);
2046
2047                         if (freq > 0 && dev->listen_freq != freq) {
2048                                 p2p_dbg(p2p,
2049                                         "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2050                                         MAC2STR(addr), dev->listen_freq, freq);
2051                                 dev->listen_freq = freq;
2052                         }
2053                 }
2054
2055                 os_get_reltime(&dev->last_seen);
2056                 p2p_parse_free(&msg);
2057                 return; /* already known */
2058         }
2059
2060         dev = p2p_create_device(p2p, addr);
2061         if (dev == NULL) {
2062                 p2p_parse_free(&msg);
2063                 return;
2064         }
2065
2066         os_get_reltime(&dev->last_seen);
2067         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2068
2069         if (msg.listen_channel) {
2070                 os_memcpy(dev->country, msg.listen_channel, 3);
2071                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2072                                                        msg.listen_channel[4]);
2073         }
2074
2075         p2p_copy_wps_info(p2p, dev, 1, &msg);
2076
2077         if (msg.wfd_subelems) {
2078                 wpabuf_free(dev->info.wfd_subelems);
2079                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2080         }
2081
2082         p2p_parse_free(&msg);
2083
2084         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2085                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2086                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2087                 dev->info.group_capab, dev->info.device_name,
2088                 dev->listen_freq);
2089 }
2090
2091
2092 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2093                                                 const u8 *addr,
2094                                                 struct p2p_message *msg)
2095 {
2096         struct p2p_device *dev;
2097
2098         dev = p2p_get_device(p2p, addr);
2099         if (dev) {
2100                 os_get_reltime(&dev->last_seen);
2101                 return dev; /* already known */
2102         }
2103
2104         dev = p2p_create_device(p2p, addr);
2105         if (dev == NULL)
2106                 return NULL;
2107
2108         p2p_add_dev_info(p2p, addr, dev, msg);
2109
2110         return dev;
2111 }
2112
2113
2114 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2115 {
2116         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2117                 return 1;
2118         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2119             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2120             WPA_GET_BE16(&req_dev_type[6]) == 0)
2121                 return 1; /* Category match with wildcard OUI/sub-category */
2122         return 0;
2123 }
2124
2125
2126 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2127                         size_t num_req_dev_type)
2128 {
2129         size_t i;
2130         for (i = 0; i < num_req_dev_type; i++) {
2131                 if (dev_type_match(dev_type, req_dev_type[i]))
2132                         return 1;
2133         }
2134         return 0;
2135 }
2136
2137
2138 /**
2139  * p2p_match_dev_type - Match local device type with requested type
2140  * @p2p: P2P module context from p2p_init()
2141  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2142  * Returns: 1 on match, 0 on mismatch
2143  *
2144  * This function can be used to match the Requested Device Type attribute in
2145  * WPS IE with the local device types for deciding whether to reply to a Probe
2146  * Request frame.
2147  */
2148 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2149 {
2150         struct wps_parse_attr attr;
2151         size_t i;
2152
2153         if (wps_parse_msg(wps, &attr))
2154                 return 1; /* assume no Requested Device Type attributes */
2155
2156         if (attr.num_req_dev_type == 0)
2157                 return 1; /* no Requested Device Type attributes -> match */
2158
2159         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2160                                 attr.num_req_dev_type))
2161                 return 1; /* Own Primary Device Type matches */
2162
2163         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2164                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2165                                         attr.req_dev_type,
2166                                         attr.num_req_dev_type))
2167                         return 1; /* Own Secondary Device Type matches */
2168         }
2169
2170         /* No matching device type found */
2171         return 0;
2172 }
2173
2174
2175 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2176                                          const u8 *query_hash,
2177                                          u8 query_count)
2178 {
2179         struct wpabuf *buf;
2180         u8 *len;
2181         int pw_id = -1;
2182         size_t extra = 0;
2183
2184 #ifdef CONFIG_WIFI_DISPLAY
2185         if (p2p->wfd_ie_probe_resp)
2186                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2188
2189         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2191
2192         if (query_count)
2193                 extra += MAX_SVC_ADV_IE_LEN;
2194
2195         buf = wpabuf_alloc(1000 + extra);
2196         if (buf == NULL)
2197                 return NULL;
2198
2199         if (p2p->go_neg_peer) {
2200                 /* Advertise immediate availability of WPS credential */
2201                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2202         }
2203
2204         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2205                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2206                 wpabuf_free(buf);
2207                 return NULL;
2208         }
2209
2210 #ifdef CONFIG_WIFI_DISPLAY
2211         if (p2p->wfd_ie_probe_resp)
2212                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2213 #endif /* CONFIG_WIFI_DISPLAY */
2214
2215         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2216                 wpabuf_put_buf(buf,
2217                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2218
2219         /* P2P IE */
2220         len = p2p_buf_add_ie_hdr(buf);
2221         p2p_buf_add_capability(buf, p2p->dev_capab &
2222                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2223         if (p2p->ext_listen_interval)
2224                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2225                                               p2p->ext_listen_interval);
2226         p2p_buf_add_device_info(buf, p2p, NULL);
2227         p2p_buf_update_ie_hdr(buf, len);
2228
2229         if (query_count) {
2230                 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2231                                              p2p->p2ps_adv_list);
2232         }
2233
2234         return buf;
2235 }
2236
2237
2238 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2239 {
2240         struct p2ps_advertisement *adv_data;
2241         int any_wfa;
2242
2243         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2244
2245         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2246         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2247
2248         adv_data = p2p->p2ps_adv_list;
2249         while (adv_data) {
2250                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2251                         return 1; /* exact hash match */
2252                 if (any_wfa &&
2253                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2254                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2255                         return 1; /* WFA service match */
2256                 adv_data = adv_data->next;
2257         }
2258
2259         return 0;
2260 }
2261
2262
2263 static enum p2p_probe_req_status
2264 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2265                 const u8 *bssid, const u8 *ie, size_t ie_len,
2266                 unsigned int rx_freq)
2267 {
2268         struct ieee802_11_elems elems;
2269         struct wpabuf *buf;
2270         struct ieee80211_mgmt *resp;
2271         struct p2p_message msg;
2272         struct wpabuf *ies;
2273         u8 channel, op_class;
2274
2275         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2276             ParseFailed) {
2277                 /* Ignore invalid Probe Request frames */
2278                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2279                 return P2P_PREQ_MALFORMED;
2280         }
2281
2282         if (elems.p2p == NULL) {
2283                 /* not a P2P probe - ignore it */
2284                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2285                 return P2P_PREQ_NOT_P2P;
2286         }
2287
2288         if (dst && !is_broadcast_ether_addr(dst) &&
2289             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2290                 /* Not sent to the broadcast address or our P2P Device Address
2291                  */
2292                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2293                         MAC2STR(dst));
2294                 return P2P_PREQ_NOT_PROCESSED;
2295         }
2296
2297         if (bssid && !is_broadcast_ether_addr(bssid)) {
2298                 /* Not sent to the Wildcard BSSID */
2299                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2300                         MAC2STR(bssid));
2301                 return P2P_PREQ_NOT_PROCESSED;
2302         }
2303
2304         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2305             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2306             0) {
2307                 /* not using P2P Wildcard SSID - ignore */
2308                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2309                 return P2P_PREQ_NOT_PROCESSED;
2310         }
2311
2312         if (supp_rates_11b_only(&elems)) {
2313                 /* Indicates support for 11b rates only */
2314                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2315                 return P2P_PREQ_NOT_P2P;
2316         }
2317
2318         os_memset(&msg, 0, sizeof(msg));
2319         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2320                 /* Could not parse P2P attributes */
2321                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2322                 return P2P_PREQ_NOT_P2P;
2323         }
2324
2325         if (msg.service_hash && msg.service_hash_count) {
2326                 const u8 *hash = msg.service_hash;
2327                 u8 i;
2328                 int p2ps_svc_found = 0;
2329
2330                 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",
2331                         p2p->in_listen, p2p->drv_in_listen, rx_freq,
2332                         p2p->cfg->channel, p2p->pending_listen_freq);
2333
2334                 if (!p2p->in_listen && !p2p->drv_in_listen &&
2335                     p2p->pending_listen_freq && rx_freq &&
2336                     rx_freq != p2p->pending_listen_freq) {
2337                         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",
2338                                 rx_freq, p2p->pending_listen_freq);
2339                         p2p_parse_free(&msg);
2340                         return P2P_PREQ_NOT_LISTEN;
2341                 }
2342
2343                 for (i = 0; i < msg.service_hash_count; i++) {
2344                         if (p2p_service_find_asp(p2p, hash)) {
2345                                 p2p_dbg(p2p, "Service Hash match found: "
2346                                         MACSTR, MAC2STR(hash));
2347                                 p2ps_svc_found = 1;
2348                                 break;
2349                         }
2350                         hash += P2PS_HASH_LEN;
2351                 }
2352
2353                 /* Probed hash unknown */
2354                 if (!p2ps_svc_found) {
2355                         p2p_dbg(p2p, "No Service Hash match found");
2356                         p2p_parse_free(&msg);
2357                         return P2P_PREQ_NOT_PROCESSED;
2358                 }
2359         } else {
2360                 /* This is not a P2PS Probe Request */
2361                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2362
2363                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2364                         /* not in Listen state - ignore Probe Request */
2365                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2366                                 p2p->in_listen, p2p->drv_in_listen);
2367                         p2p_parse_free(&msg);
2368                         return P2P_PREQ_NOT_LISTEN;
2369                 }
2370         }
2371
2372         if (msg.device_id &&
2373             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2374                 /* Device ID did not match */
2375                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2376                         MAC2STR(msg.device_id));
2377                 p2p_parse_free(&msg);
2378                 return P2P_PREQ_NOT_PROCESSED;
2379         }
2380
2381         /* Check Requested Device Type match */
2382         if (msg.wps_attributes &&
2383             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2384                 /* No match with Requested Device Type */
2385                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2386                 p2p_parse_free(&msg);
2387                 return P2P_PREQ_NOT_PROCESSED;
2388         }
2389
2390         if (!p2p->cfg->send_probe_resp) {
2391                 /* Response generated elsewhere */
2392                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2393                 p2p_parse_free(&msg);
2394                 return P2P_PREQ_NOT_PROCESSED;
2395         }
2396
2397         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2398
2399         /*
2400          * We do not really have a specific BSS that this frame is advertising,
2401          * so build a frame that has some information in valid format. This is
2402          * really only used for discovery purposes, not to learn exact BSS
2403          * parameters.
2404          */
2405         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2406                                        msg.service_hash_count);
2407         p2p_parse_free(&msg);
2408         if (ies == NULL)
2409                 return P2P_PREQ_NOT_PROCESSED;
2410
2411         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2412         if (buf == NULL) {
2413                 wpabuf_free(ies);
2414                 return P2P_PREQ_NOT_PROCESSED;
2415         }
2416
2417         resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2418                                         u.probe_resp.variable));
2419
2420         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2421                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2422         os_memcpy(resp->da, addr, ETH_ALEN);
2423         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2424         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2425         resp->u.probe_resp.beacon_int = host_to_le16(100);
2426         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2427         resp->u.probe_resp.capab_info =
2428                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2429                              WLAN_CAPABILITY_PRIVACY |
2430                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2431
2432         wpabuf_put_u8(buf, WLAN_EID_SSID);
2433         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2434         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2435
2436         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2437         wpabuf_put_u8(buf, 8);
2438         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2439         wpabuf_put_u8(buf, 90 / 5);
2440         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2441         wpabuf_put_u8(buf, 180 / 5);
2442         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2443         wpabuf_put_u8(buf, 360 / 5);
2444         wpabuf_put_u8(buf, 480 / 5);
2445         wpabuf_put_u8(buf, 540 / 5);
2446
2447         if (!rx_freq) {
2448                 channel = p2p->cfg->channel;
2449         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2450                 wpabuf_free(ies);
2451                 wpabuf_free(buf);
2452                 return P2P_PREQ_NOT_PROCESSED;
2453         }
2454
2455         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2456         wpabuf_put_u8(buf, 1);
2457         wpabuf_put_u8(buf, channel);
2458
2459         wpabuf_put_buf(buf, ies);
2460         wpabuf_free(ies);
2461
2462         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2463
2464         wpabuf_free(buf);
2465
2466         return P2P_PREQ_PROCESSED;
2467 }
2468
2469
2470 enum p2p_probe_req_status
2471 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2472                  const u8 *bssid, const u8 *ie, size_t ie_len,
2473                  unsigned int rx_freq)
2474 {
2475         enum p2p_probe_req_status res;
2476
2477         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2478
2479         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2480         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2481                 return res;
2482
2483         /*
2484          * Activate a pending GO Negotiation/Invite flow if a received Probe
2485          * Request frame is from an expected peer. Some devices may share the
2486          * same address for P2P and non-P2P STA running simultaneously. The
2487          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2488          * return values verified above ensure we are handling a Probe Request
2489          * frame from a P2P peer.
2490          */
2491         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2492             p2p->go_neg_peer &&
2493             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2494             == 0 &&
2495             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2496                 /* Received a Probe Request from GO Negotiation peer */
2497                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2498                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2499                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2500                 return res;
2501         }
2502
2503         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2504             p2p->invite_peer &&
2505             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2506             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2507             == 0) {
2508                 /* Received a Probe Request from Invite peer */
2509                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2510                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2511                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2512                 return res;
2513         }
2514
2515         return res;
2516 }
2517
2518
2519 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2520                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2521 {
2522         struct wpabuf *tmp;
2523         u8 *lpos;
2524         size_t tmplen;
2525         int res;
2526         u8 group_capab;
2527         struct p2p_message msg;
2528
2529         if (p2p_ie == NULL)
2530                 return 0; /* WLAN AP is not a P2P manager */
2531
2532         os_memset(&msg, 0, sizeof(msg));
2533         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2534                 return 0;
2535
2536         p2p_dbg(p2p, "BSS P2P manageability %s",
2537                 msg.manageability ? "enabled" : "disabled");
2538
2539         if (!msg.manageability)
2540                 return 0;
2541
2542         /*
2543          * (Re)Association Request - P2P IE
2544          * P2P Capability attribute (shall be present)
2545          * P2P Interface attribute (present if concurrent device and
2546          *      P2P Management is enabled)
2547          */
2548         tmp = wpabuf_alloc(200);
2549         if (tmp == NULL)
2550                 return -1;
2551
2552         lpos = p2p_buf_add_ie_hdr(tmp);
2553         group_capab = 0;
2554         if (p2p->num_groups > 0) {
2555                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2556                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2557                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2558                     p2p->cross_connect)
2559                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2560         }
2561         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2562         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2563             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2564                 p2p_buf_add_p2p_interface(tmp, p2p);
2565         p2p_buf_update_ie_hdr(tmp, lpos);
2566
2567         tmplen = wpabuf_len(tmp);
2568         if (tmplen > len)
2569                 res = -1;
2570         else {
2571                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2572                 res = tmplen;
2573         }
2574         wpabuf_free(tmp);
2575
2576         return res;
2577 }
2578
2579
2580 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2581                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2582 {
2583         struct wpabuf *tmp;
2584         u8 *lpos;
2585         struct p2p_device *peer;
2586         size_t tmplen;
2587         int res;
2588         size_t extra = 0;
2589
2590         if (!p2p_group)
2591                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2592
2593 #ifdef CONFIG_WIFI_DISPLAY
2594         if (p2p->wfd_ie_assoc_req)
2595                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2596 #endif /* CONFIG_WIFI_DISPLAY */
2597
2598         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2599                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2600
2601         /*
2602          * (Re)Association Request - P2P IE
2603          * P2P Capability attribute (shall be present)
2604          * Extended Listen Timing (may be present)
2605          * P2P Device Info attribute (shall be present)
2606          */
2607         tmp = wpabuf_alloc(200 + extra);
2608         if (tmp == NULL)
2609                 return -1;
2610
2611 #ifdef CONFIG_WIFI_DISPLAY
2612         if (p2p->wfd_ie_assoc_req)
2613                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2614 #endif /* CONFIG_WIFI_DISPLAY */
2615
2616         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2617                 wpabuf_put_buf(tmp,
2618                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2619
2620         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2621
2622         lpos = p2p_buf_add_ie_hdr(tmp);
2623         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2624         if (p2p->ext_listen_interval)
2625                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2626                                               p2p->ext_listen_interval);
2627         p2p_buf_add_device_info(tmp, p2p, peer);
2628         p2p_buf_update_ie_hdr(tmp, lpos);
2629
2630         tmplen = wpabuf_len(tmp);
2631         if (tmplen > len)
2632                 res = -1;
2633         else {
2634                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2635                 res = tmplen;
2636         }
2637         wpabuf_free(tmp);
2638
2639         return res;
2640 }
2641
2642
2643 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2644 {
2645         struct wpabuf *p2p_ie;
2646         int ret;
2647
2648         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2649         if (p2p_ie == NULL)
2650                 return 0;
2651
2652         ret = p2p_attr_text(p2p_ie, buf, end);
2653         wpabuf_free(p2p_ie);
2654         return ret;
2655 }
2656
2657
2658 struct p2ps_advertisement *
2659 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2660 {
2661         struct p2ps_advertisement *adv_data;
2662
2663         if (!p2p)
2664                 return NULL;
2665
2666         adv_data = p2p->p2ps_adv_list;
2667         while (adv_data) {
2668                 if (adv_data->id == adv_id)
2669                         return adv_data;
2670                 adv_data = adv_data->next;
2671         }
2672
2673         return NULL;
2674 }
2675
2676
2677 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2678 {
2679         struct p2ps_advertisement *adv_data;
2680         struct p2ps_advertisement **prior;
2681
2682         if (!p2p)
2683                 return -1;
2684
2685         adv_data = p2p->p2ps_adv_list;
2686         prior = &p2p->p2ps_adv_list;
2687         while (adv_data) {
2688                 if (adv_data->id == adv_id) {
2689                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2690                         *prior = adv_data->next;
2691                         os_free(adv_data);
2692                         return 0;
2693                 }
2694                 prior = &adv_data->next;
2695                 adv_data = adv_data->next;
2696         }
2697
2698         return -1;
2699 }
2700
2701
2702 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2703                         const char *adv_str, u8 svc_state, u16 config_methods,
2704                         const char *svc_info, const u8 *cpt_priority)
2705 {
2706         struct p2ps_advertisement *adv_data, *tmp, **prev;
2707         u8 buf[P2PS_HASH_LEN];
2708         size_t adv_data_len, adv_len, info_len = 0;
2709         int i;
2710
2711         if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2712                 return -1;
2713
2714         if (!(config_methods & p2p->cfg->config_methods)) {
2715                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2716                         config_methods, p2p->cfg->config_methods);
2717                 return -1;
2718         }
2719
2720         if (!p2ps_gen_hash(p2p, adv_str, buf))
2721                 return -1;
2722
2723         if (svc_info)
2724                 info_len = os_strlen(svc_info);
2725         adv_len = os_strlen(adv_str);
2726         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2727                 info_len + 1;
2728
2729         adv_data = os_zalloc(adv_data_len);
2730         if (!adv_data)
2731                 return -1;
2732
2733         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2734         adv_data->id = adv_id;
2735         adv_data->state = svc_state;
2736         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2737         adv_data->auto_accept = (u8) auto_accept;
2738         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2739
2740         for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2741                 adv_data->cpt_priority[i] = cpt_priority[i];
2742                 adv_data->cpt_mask |= cpt_priority[i];
2743         }
2744
2745         if (svc_info && info_len) {
2746                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2747                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2748         }
2749
2750         /*
2751          * Group Advertisements by service string. They do not need to be
2752          * sorted, but groups allow easier Probe Response instance grouping
2753          */
2754         tmp = p2p->p2ps_adv_list;
2755         prev = &p2p->p2ps_adv_list;
2756         while (tmp) {
2757                 if (tmp->id == adv_data->id) {
2758                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2759                                 os_free(adv_data);
2760                                 return -1;
2761                         }
2762                         adv_data->next = tmp->next;
2763                         *prev = adv_data;
2764                         os_free(tmp);
2765                         goto inserted;
2766                 } else {
2767                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2768                                 adv_data->next = tmp->next;
2769                                 tmp->next = adv_data;
2770                                 goto inserted;
2771                         }
2772                 }
2773                 prev = &tmp->next;
2774                 tmp = tmp->next;
2775         }
2776
2777         /* No svc_name match found */
2778         adv_data->next = p2p->p2ps_adv_list;
2779         p2p->p2ps_adv_list = adv_data;
2780
2781 inserted:
2782         p2p_dbg(p2p,
2783                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2784                 adv_id, adv_data->config_methods, svc_state, adv_str,
2785                 adv_data->cpt_mask);
2786
2787         return 0;
2788 }
2789
2790
2791 void p2p_service_flush_asp(struct p2p_data *p2p)
2792 {
2793         struct p2ps_advertisement *adv, *prev;
2794
2795         if (!p2p)
2796                 return;
2797
2798         adv = p2p->p2ps_adv_list;
2799         while (adv) {
2800                 prev = adv;
2801                 adv = adv->next;
2802                 os_free(prev);
2803         }
2804
2805         p2p->p2ps_adv_list = NULL;
2806         p2p_dbg(p2p, "All ASP advertisements flushed");
2807 }
2808
2809
2810 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2811 {
2812         struct p2p_message msg;
2813
2814         os_memset(&msg, 0, sizeof(msg));
2815         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2816                 return -1;
2817
2818         if (msg.p2p_device_addr) {
2819                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2820                 return 0;
2821         } else if (msg.device_id) {
2822                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2823                 return 0;
2824         }
2825         return -1;
2826 }
2827
2828
2829 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2830 {
2831         struct wpabuf *p2p_ie;
2832         int ret;
2833
2834         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2835                                              P2P_IE_VENDOR_TYPE);
2836         if (p2p_ie == NULL)
2837                 return -1;
2838         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2839         wpabuf_free(p2p_ie);
2840         return ret;
2841 }
2842
2843
2844 static void p2p_clear_go_neg(struct p2p_data *p2p)
2845 {
2846         p2p->go_neg_peer = NULL;
2847         p2p_clear_timeout(p2p);
2848         p2p_set_state(p2p, P2P_IDLE);
2849 }
2850
2851
2852 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2853 {
2854         if (p2p->go_neg_peer == NULL) {
2855                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2856                 return; /* No pending Group Formation */
2857         }
2858
2859         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2860             0) {
2861                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2862                         MACSTR " (GO Negotiation peer " MACSTR ")",
2863                         MAC2STR(mac_addr),
2864                         MAC2STR(p2p->go_neg_peer->intended_addr));
2865                 return; /* Ignore unexpected peer address */
2866         }
2867
2868         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2869                 MAC2STR(mac_addr));
2870
2871         p2p_clear_go_neg(p2p);
2872 }
2873
2874
2875 void p2p_group_formation_failed(struct p2p_data *p2p)
2876 {
2877         if (p2p->go_neg_peer == NULL) {
2878                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2879                 return; /* No pending Group Formation */
2880         }
2881
2882         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2883                 MAC2STR(p2p->go_neg_peer->intended_addr));
2884
2885         p2p_clear_go_neg(p2p);
2886 }
2887
2888
2889 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2890 {
2891         struct p2p_data *p2p;
2892
2893         if (cfg->max_peers < 1 ||
2894             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2895                 return NULL;
2896
2897         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2898         if (p2p == NULL)
2899                 return NULL;
2900         p2p->cfg = (struct p2p_config *) (p2p + 1);
2901         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2902         if (cfg->dev_name)
2903                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2904         if (cfg->manufacturer)
2905                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2906         if (cfg->model_name)
2907                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2908         if (cfg->model_number)
2909                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2910         if (cfg->serial_number)
2911                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2912         if (cfg->pref_chan) {
2913                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2914                                                 sizeof(struct p2p_channel));
2915                 if (p2p->cfg->pref_chan) {
2916                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2917                                   cfg->num_pref_chan *
2918                                   sizeof(struct p2p_channel));
2919                 } else
2920                         p2p->cfg->num_pref_chan = 0;
2921         }
2922
2923         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2924
2925         p2p->min_disc_int = 1;
2926         p2p->max_disc_int = 3;
2927         p2p->max_disc_tu = -1;
2928
2929         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2930                 p2p->next_tie_breaker = 0;
2931         p2p->next_tie_breaker &= 0x01;
2932         if (cfg->sd_request)
2933                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2934         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2935         if (cfg->concurrent_operations)
2936                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2937         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2938
2939         dl_list_init(&p2p->devices);
2940
2941         p2p->go_timeout = 100;
2942         p2p->client_timeout = 20;
2943         p2p->num_p2p_sd_queries = 0;
2944
2945         p2p_dbg(p2p, "initialized");
2946         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2947         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2948
2949         return p2p;
2950 }
2951
2952
2953 void p2p_deinit(struct p2p_data *p2p)
2954 {
2955 #ifdef CONFIG_WIFI_DISPLAY
2956         wpabuf_free(p2p->wfd_ie_beacon);
2957         wpabuf_free(p2p->wfd_ie_probe_req);
2958         wpabuf_free(p2p->wfd_ie_probe_resp);
2959         wpabuf_free(p2p->wfd_ie_assoc_req);
2960         wpabuf_free(p2p->wfd_ie_invitation);
2961         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2962         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2963         wpabuf_free(p2p->wfd_ie_go_neg);
2964         wpabuf_free(p2p->wfd_dev_info);
2965         wpabuf_free(p2p->wfd_assoc_bssid);
2966         wpabuf_free(p2p->wfd_coupled_sink_info);
2967 #endif /* CONFIG_WIFI_DISPLAY */
2968
2969         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2970         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2971         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2972         p2p_flush(p2p);
2973         p2p_free_req_dev_types(p2p);
2974         os_free(p2p->cfg->dev_name);
2975         os_free(p2p->cfg->manufacturer);
2976         os_free(p2p->cfg->model_name);
2977         os_free(p2p->cfg->model_number);
2978         os_free(p2p->cfg->serial_number);
2979         os_free(p2p->cfg->pref_chan);
2980         os_free(p2p->groups);
2981         p2ps_prov_free(p2p);
2982         wpabuf_free(p2p->sd_resp);
2983         os_free(p2p->after_scan_tx);
2984         p2p_remove_wps_vendor_extensions(p2p);
2985         os_free(p2p->no_go_freq.range);
2986         p2p_service_flush_asp(p2p);
2987
2988         os_free(p2p);
2989 }
2990
2991
2992 void p2p_flush(struct p2p_data *p2p)
2993 {
2994         struct p2p_device *dev, *prev;
2995
2996         p2p_ext_listen(p2p, 0, 0);
2997         p2p_stop_find(p2p);
2998         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2999                               list) {
3000                 dl_list_del(&dev->list);
3001                 p2p_device_free(p2p, dev);
3002         }
3003         p2p_free_sd_queries(p2p);
3004         os_free(p2p->after_scan_tx);
3005         p2p->after_scan_tx = NULL;
3006         p2p->ssid_set = 0;
3007 }
3008
3009
3010 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3011 {
3012         struct p2p_device *dev;
3013
3014         dev = p2p_get_device(p2p, addr);
3015         if (dev == NULL)
3016                 return -1;
3017
3018         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3019
3020         if (p2p->go_neg_peer == dev) {
3021                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3022                 p2p->go_neg_peer = NULL;
3023         }
3024
3025         dev->wps_method = WPS_NOT_READY;
3026         dev->oob_pw_id = 0;
3027         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3028         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3029
3030         /* Check if after_scan_tx is for this peer. If so free it */
3031         if (p2p->after_scan_tx &&
3032             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3033                 os_free(p2p->after_scan_tx);
3034                 p2p->after_scan_tx = NULL;
3035         }
3036
3037         return 0;
3038 }
3039
3040
3041 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3042 {
3043         os_free(p2p->cfg->dev_name);
3044         if (dev_name) {
3045                 p2p->cfg->dev_name = os_strdup(dev_name);
3046                 if (p2p->cfg->dev_name == NULL)
3047                         return -1;
3048         } else
3049                 p2p->cfg->dev_name = NULL;
3050         return 0;
3051 }
3052
3053
3054 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3055 {
3056         os_free(p2p->cfg->manufacturer);
3057         p2p->cfg->manufacturer = NULL;
3058         if (manufacturer) {
3059                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3060                 if (p2p->cfg->manufacturer == NULL)
3061                         return -1;
3062         }
3063
3064         return 0;
3065 }
3066
3067
3068 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3069 {
3070         os_free(p2p->cfg->model_name);
3071         p2p->cfg->model_name = NULL;
3072         if (model_name) {
3073                 p2p->cfg->model_name = os_strdup(model_name);
3074                 if (p2p->cfg->model_name == NULL)
3075                         return -1;
3076         }
3077
3078         return 0;
3079 }
3080
3081
3082 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3083 {
3084         os_free(p2p->cfg->model_number);
3085         p2p->cfg->model_number = NULL;
3086         if (model_number) {
3087                 p2p->cfg->model_number = os_strdup(model_number);
3088                 if (p2p->cfg->model_number == NULL)
3089                         return -1;
3090         }
3091
3092         return 0;
3093 }
3094
3095
3096 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3097 {
3098         os_free(p2p->cfg->serial_number);
3099         p2p->cfg->serial_number = NULL;
3100         if (serial_number) {
3101                 p2p->cfg->serial_number = os_strdup(serial_number);
3102                 if (p2p->cfg->serial_number == NULL)
3103                         return -1;
3104         }
3105
3106         return 0;
3107 }
3108
3109
3110 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3111 {
3112         p2p->cfg->config_methods = config_methods;
3113 }
3114
3115
3116 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3117 {
3118         os_memcpy(p2p->cfg->uuid, uuid, 16);
3119 }
3120
3121
3122 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3123 {
3124         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3125         return 0;
3126 }
3127
3128
3129 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3130                           size_t num_dev_types)
3131 {
3132         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3133                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3134         p2p->cfg->num_sec_dev_types = num_dev_types;
3135         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3136         return 0;
3137 }
3138
3139
3140 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3141 {
3142         int i;
3143
3144         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3145                 wpabuf_free(p2p->wps_vendor_ext[i]);
3146                 p2p->wps_vendor_ext[i] = NULL;
3147         }
3148 }
3149
3150
3151 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3152                                  const struct wpabuf *vendor_ext)
3153 {
3154         int i;
3155
3156         if (vendor_ext == NULL)
3157                 return -1;
3158
3159         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3160                 if (p2p->wps_vendor_ext[i] == NULL)
3161                         break;
3162         }
3163         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3164                 return -1;
3165
3166         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3167         if (p2p->wps_vendor_ext[i] == NULL)
3168                 return -1;
3169
3170         return 0;
3171 }
3172
3173
3174 int p2p_set_country(struct p2p_data *p2p, const char *country)
3175 {
3176         os_memcpy(p2p->cfg->country, country, 3);
3177         return 0;
3178 }
3179
3180
3181 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3182 {
3183         int res;
3184
3185         if (dev->sd_pending_bcast_queries == 0) {
3186                 /* Initialize with total number of registered broadcast
3187                  * SD queries. */
3188                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3189         }
3190
3191         res = p2p_start_sd(p2p, dev);
3192         if (res == -2)
3193                 return -2;
3194         if (res == 0)
3195                 return 1;
3196
3197         if (dev->req_config_methods &&
3198             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3199                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3200                         MACSTR " (config methods 0x%x)",
3201                         MAC2STR(dev->info.p2p_device_addr),
3202                         dev->req_config_methods);
3203                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3204                         return 1;
3205         }
3206
3207         return 0;
3208 }
3209
3210
3211 void p2p_continue_find(struct p2p_data *p2p)
3212 {
3213         struct p2p_device *dev;
3214         int found, res;
3215
3216         p2p_set_state(p2p, P2P_SEARCH);
3217
3218         /* Continue from the device following the last iteration */
3219         found = 0;
3220         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3221                 if (dev == p2p->last_p2p_find_oper) {
3222                         found = 1;
3223                         continue;
3224                 }
3225                 if (!found)
3226                         continue;
3227                 res = p2p_pre_find_operation(p2p, dev);
3228                 if (res > 0) {
3229                         p2p->last_p2p_find_oper = dev;
3230                         return;
3231                 }
3232                 if (res == -2)
3233                         goto skip_sd;
3234         }
3235
3236         /*
3237          * Wrap around to the beginning of the list and continue until the last
3238          * iteration device.
3239          */
3240         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3241                 res = p2p_pre_find_operation(p2p, dev);
3242                 if (res > 0) {
3243                         p2p->last_p2p_find_oper = dev;
3244                         return;
3245                 }
3246                 if (res == -2)
3247                         goto skip_sd;
3248                 if (dev == p2p->last_p2p_find_oper)
3249                         break;
3250         }
3251
3252 skip_sd:
3253         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3254         p2p_listen_in_find(p2p, 1);
3255 }
3256
3257
3258 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3259 {
3260         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3261                 success);
3262         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3263
3264         if (!success) {
3265                 if (p2p->sd_peer) {
3266                         if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3267                                 os_memcpy(p2p->sd_query_no_ack,
3268                                           p2p->sd_peer->info.p2p_device_addr,
3269                                           ETH_ALEN);
3270                                 p2p_dbg(p2p,
3271                                         "First SD Query no-ACK in this search iteration: "
3272                                         MACSTR, MAC2STR(p2p->sd_query_no_ack));
3273                         }
3274                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3275                 }
3276                 p2p->sd_peer = NULL;
3277                 if (p2p->state != P2P_IDLE)
3278                         p2p_continue_find(p2p);
3279                 return;
3280         }
3281
3282         if (p2p->sd_peer == NULL) {
3283                 p2p_dbg(p2p, "No SD peer entry known");
3284                 if (p2p->state != P2P_IDLE)
3285                         p2p_continue_find(p2p);
3286                 return;
3287         }
3288
3289         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3290                 /* Update the pending broadcast SD query count for this device
3291                  */
3292                 p2p->sd_peer->sd_pending_bcast_queries--;
3293
3294                 /*
3295                  * If there are no pending broadcast queries for this device,
3296                  * mark it as done (-1).
3297                  */
3298                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3299                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3300         }
3301
3302         /* Wait for response from the peer */
3303         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3304         p2p_set_timeout(p2p, 0, 200000);
3305 }
3306
3307
3308 /**
3309  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3310  * @p2p: P2P module context from p2p_init()
3311  */
3312 static void p2p_retry_pd(struct p2p_data *p2p)
3313 {
3314         struct p2p_device *dev;
3315
3316         /*
3317          * Retry the prov disc req attempt only for the peer that the user had
3318          * requested.
3319          */
3320
3321         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3322                 if (os_memcmp(p2p->pending_pd_devaddr,
3323                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3324                         continue;
3325                 if (!dev->req_config_methods)
3326                         continue;
3327
3328                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3329                         MACSTR " (config methods 0x%x)",
3330                         MAC2STR(dev->info.p2p_device_addr),
3331                         dev->req_config_methods);
3332                 p2p_send_prov_disc_req(p2p, dev,
3333                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3334                                        p2p->pd_force_freq);
3335                 return;
3336         }
3337 }
3338
3339
3340 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3341 {
3342         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3343                 success);
3344
3345         /*
3346          * Postpone resetting the pending action state till after we actually
3347          * time out. This allows us to take some action like notifying any
3348          * interested parties about no response to the request.
3349          *
3350          * When the timer (below) goes off we check in IDLE, SEARCH, or
3351          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3352          * requests in, if this was still pending and then raise notification.
3353          */
3354
3355         if (!success) {
3356                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3357
3358                 if (p2p->user_initiated_pd &&
3359                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3360                 {
3361                         /* Retry request from timeout to avoid busy loops */
3362                         p2p->pending_action_state = P2P_PENDING_PD;
3363                         p2p_set_timeout(p2p, 0, 50000);
3364                 } else if (p2p->state != P2P_IDLE)
3365                         p2p_continue_find(p2p);
3366                 else if (p2p->user_initiated_pd) {
3367                         p2p->pending_action_state = P2P_PENDING_PD;
3368                         p2p_set_timeout(p2p, 0, 300000);
3369                 }
3370                 return;
3371         }
3372
3373         /*
3374          * If after PD Request the peer doesn't expect to receive PD Response
3375          * the PD Request ACK indicates a completion of the current PD. This
3376          * happens only on the advertiser side sending the follow-on PD Request
3377          * with the status different than 12 (Success: accepted by user).
3378          */
3379         if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3380             p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3381                 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3382
3383                 if (p2p->send_action_in_progress) {
3384                         p2p->send_action_in_progress = 0;
3385                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3386                 }
3387
3388                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3389
3390                 if (p2p->cfg->p2ps_prov_complete) {
3391                         p2p->cfg->p2ps_prov_complete(
3392                                 p2p->cfg->cb_ctx,
3393                                 p2p->p2ps_prov->status,
3394                                 p2p->p2ps_prov->adv_mac,
3395                                 p2p->p2ps_prov->adv_mac,
3396                                 p2p->p2ps_prov->session_mac,
3397                                 NULL, p2p->p2ps_prov->adv_id,
3398                                 p2p->p2ps_prov->session_id,
3399                                 0, 0, NULL, 0, 0, 0,
3400                                 NULL, NULL, 0, 0, NULL, 0);
3401                 }
3402
3403                 if (p2p->user_initiated_pd)
3404                         p2p_reset_pending_pd(p2p);
3405
3406                 p2ps_prov_free(p2p);
3407                 return;
3408         }
3409
3410         /*
3411          * This postponing, of resetting pending_action_state, needs to be
3412          * done only for user initiated PD requests and not internal ones.
3413          */
3414         if (p2p->user_initiated_pd)
3415                 p2p->pending_action_state = P2P_PENDING_PD;
3416         else
3417                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3418
3419         /* Wait for response from the peer */
3420         if (p2p->state == P2P_SEARCH)
3421                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3422         p2p_set_timeout(p2p, 0, 200000);
3423 }
3424
3425
3426 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3427 {
3428         if (p2p->after_scan_tx_in_progress) {
3429                 p2p->after_scan_tx_in_progress = 0;
3430                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3431                     p2p_run_after_scan(p2p))
3432                         return 1;
3433                 if (p2p->state == P2P_SEARCH) {
3434                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3435                         p2p_continue_find(p2p);
3436                 }
3437         }
3438
3439         return 0;
3440 }
3441
3442
3443 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3444 {
3445         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3446                 success);
3447
3448         if (p2p->send_action_in_progress) {
3449                 p2p->send_action_in_progress = 0;
3450                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3451         }
3452
3453         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3454
3455         if (!success)
3456                 goto continue_search;
3457
3458         if (!p2p->cfg->prov_disc_resp_cb ||
3459             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3460                 goto continue_search;
3461
3462         p2p_dbg(p2p,
3463                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3464         return;
3465
3466 continue_search:
3467         p2p_check_after_scan_tx_continuation(p2p);
3468 }
3469
3470
3471 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3472                          struct os_reltime *rx_time, int level, const u8 *ies,
3473                          size_t ies_len)
3474 {
3475         if (os_reltime_before(rx_time, &p2p->find_start)) {
3476                 /*
3477                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3478                  * scan results for relatively long time. To avoid reporting
3479                  * stale information, update P2P peers only based on results
3480                  * that have based on frames received after the last p2p_find
3481                  * operation was started.
3482                  */
3483                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3484                         " (rx_time=%u.%06u find_start=%u.%06u)",
3485                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3486                         (unsigned int) rx_time->usec,
3487                         (unsigned int) p2p->find_start.sec,
3488                         (unsigned int) p2p->find_start.usec);
3489                 return 0;
3490         }
3491
3492         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3493
3494         return 0;
3495 }
3496
3497
3498 void p2p_scan_res_handled(struct p2p_data *p2p)
3499 {
3500         if (!p2p->p2p_scan_running) {
3501                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3502         }
3503         p2p->p2p_scan_running = 0;
3504         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3505
3506         if (p2p_run_after_scan(p2p))
3507                 return;
3508         if (p2p->state == P2P_SEARCH)
3509                 p2p_continue_find(p2p);
3510 }
3511
3512
3513 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3514                  unsigned int bands)
3515 {
3516         u8 dev_capab;
3517         u8 *len;
3518
3519 #ifdef CONFIG_WIFI_DISPLAY
3520         if (p2p->wfd_ie_probe_req)
3521                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3522 #endif /* CONFIG_WIFI_DISPLAY */
3523
3524         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3525                 wpabuf_put_buf(ies,
3526                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3527
3528         len = p2p_buf_add_ie_hdr(ies);
3529
3530         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3531
3532         /* P2PS requires Probe Request frames to include SD bit */
3533         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3534                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3535
3536         p2p_buf_add_capability(ies, dev_capab, 0);
3537
3538         if (dev_id)
3539                 p2p_buf_add_device_id(ies, dev_id);
3540         if (p2p->cfg->reg_class && p2p->cfg->channel)
3541                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3542                                            p2p->cfg->reg_class,
3543                                            p2p->cfg->channel);
3544         if (p2p->ext_listen_interval)
3545                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3546                                               p2p->ext_listen_interval);
3547
3548         if (bands & BAND_60_GHZ)
3549                 p2p_buf_add_device_info(ies, p2p, NULL);
3550
3551         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3552                 p2p_buf_add_service_hash(ies, p2p);
3553
3554         /* TODO: p2p_buf_add_operating_channel() if GO */
3555         p2p_buf_update_ie_hdr(ies, len);
3556 }
3557
3558
3559 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3560 {
3561         size_t len = 100;
3562
3563 #ifdef CONFIG_WIFI_DISPLAY
3564         if (p2p && p2p->wfd_ie_probe_req)
3565                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3566 #endif /* CONFIG_WIFI_DISPLAY */
3567
3568         if (p2p && p2p->vendor_elem &&
3569             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3570                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3571
3572         return len;
3573 }
3574
3575
3576 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3577 {
3578         return p2p_attr_text(p2p_ie, buf, end);
3579 }
3580
3581
3582 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3583 {
3584         struct p2p_device *dev = p2p->go_neg_peer;
3585         int timeout;
3586
3587         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3588
3589         if (dev == NULL) {
3590                 p2p_dbg(p2p, "No pending GO Negotiation");
3591                 return;
3592         }
3593
3594         if (success) {
3595                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3596                         p2p_set_state(p2p, P2P_IDLE);
3597                         return;
3598                 }
3599         } else if (dev->go_neg_req_sent) {
3600                 /* Cancel the increment from p2p_connect_send() on failure */
3601                 dev->go_neg_req_sent--;
3602         }
3603
3604         if (!success &&
3605             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3606             !is_zero_ether_addr(dev->member_in_go_dev)) {
3607                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3608                         MAC2STR(dev->info.p2p_device_addr));
3609                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3610                 p2p_send_dev_disc_req(p2p, dev);
3611                 return;
3612         }
3613
3614         /*
3615          * Use P2P find, if needed, to find the other device from its listen
3616          * channel.
3617          */
3618         p2p_set_state(p2p, P2P_CONNECT);
3619         timeout = success ? 500000 : 100000;
3620         if (!success && p2p->go_neg_peer &&
3621             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3622                 unsigned int r;
3623                 /*
3624                  * Peer is expected to wait our response and we will skip the
3625                  * listen phase. Add some randomness to the wait time here to
3626                  * make it less likely to hit cases where we could end up in
3627                  * sync with peer not listening.
3628                  */
3629                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3630                         r = 0;
3631                 timeout += r % 100000;
3632         }
3633         p2p_set_timeout(p2p, 0, timeout);
3634 }
3635
3636
3637 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3638 {
3639         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3640                 success);
3641         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3642                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3643                 return;
3644         }
3645         p2p_set_state(p2p, P2P_CONNECT);
3646         p2p_set_timeout(p2p, 0, 500000);
3647 }
3648
3649
3650 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3651                                        const u8 *addr)
3652 {
3653         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3654         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3655                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3656                 return;
3657         }
3658
3659         if (success) {
3660                 struct p2p_device *dev;
3661                 dev = p2p_get_device(p2p, addr);
3662                 if (dev &&
3663                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3664                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3665         }
3666
3667         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3668                 p2p_continue_find(p2p);
3669 }
3670
3671
3672 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3673                                enum p2p_send_action_result result)
3674 {
3675         struct p2p_device *dev;
3676
3677         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3678         if (result == P2P_SEND_ACTION_FAILED) {
3679                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3680                 p2p_go_neg_failed(p2p, -1);
3681                 return;
3682         }
3683
3684         dev = p2p->go_neg_peer;
3685
3686         if (result == P2P_SEND_ACTION_NO_ACK) {
3687                 /*
3688                  * Retry GO Negotiation Confirmation
3689                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3690                  * ACK for confirmation.
3691                  */
3692                 if (dev && dev->go_neg_conf &&
3693                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3694                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3695                                 dev->go_neg_conf_sent);
3696                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3697                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3698                                             dev->info.p2p_device_addr,
3699                                             p2p->cfg->dev_addr,
3700                                             dev->info.p2p_device_addr,
3701                                             wpabuf_head(dev->go_neg_conf),
3702                                             wpabuf_len(dev->go_neg_conf), 0) >=
3703                             0) {
3704                                 dev->go_neg_conf_sent++;
3705                                 return;
3706                         }
3707                         p2p_dbg(p2p, "Failed to re-send Action frame");
3708
3709                         /*
3710                          * Continue with the assumption that the first attempt
3711                          * went through and just the ACK frame was lost.
3712                          */
3713                 }
3714
3715                 /*
3716                  * It looks like the TX status for GO Negotiation Confirm is
3717                  * often showing failure even when the peer has actually
3718                  * received the frame. Since the peer may change channels
3719                  * immediately after having received the frame, we may not see
3720                  * an Ack for retries, so just dropping a single frame may
3721                  * trigger this. To allow the group formation to succeed if the
3722                  * peer did indeed receive the frame, continue regardless of
3723                  * the TX status.
3724                  */
3725                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3726         }
3727
3728         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3729
3730         if (dev == NULL)
3731                 return;
3732
3733         p2p_go_complete(p2p, dev);
3734 }
3735
3736
3737 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3738                         const u8 *src, const u8 *bssid,
3739                         enum p2p_send_action_result result)
3740 {
3741         enum p2p_pending_action_state state;
3742         int success;
3743
3744         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3745                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3746                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3747                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3748         success = result == P2P_SEND_ACTION_SUCCESS;
3749         state = p2p->pending_action_state;
3750         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3751         switch (state) {
3752         case P2P_NO_PENDING_ACTION:
3753                 if (p2p->send_action_in_progress) {
3754                         p2p->send_action_in_progress = 0;
3755                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3756                 }
3757                 p2p_check_after_scan_tx_continuation(p2p);
3758                 break;
3759         case P2P_PENDING_GO_NEG_REQUEST:
3760                 p2p_go_neg_req_cb(p2p, success);
3761                 break;
3762         case P2P_PENDING_GO_NEG_RESPONSE:
3763                 p2p_go_neg_resp_cb(p2p, success);
3764                 break;
3765         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3766                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3767                 break;
3768         case P2P_PENDING_GO_NEG_CONFIRM:
3769                 p2p_go_neg_conf_cb(p2p, result);
3770                 break;
3771         case P2P_PENDING_SD:
3772                 p2p_sd_cb(p2p, success);
3773                 break;
3774         case P2P_PENDING_PD:
3775                 p2p_prov_disc_cb(p2p, success);
3776                 break;
3777         case P2P_PENDING_PD_RESPONSE:
3778                 p2p_prov_disc_resp_cb(p2p, success);
3779                 break;
3780         case P2P_PENDING_INVITATION_REQUEST:
3781                 p2p_invitation_req_cb(p2p, success);
3782                 break;
3783         case P2P_PENDING_INVITATION_RESPONSE:
3784                 p2p_invitation_resp_cb(p2p, success);
3785                 if (p2p->inv_status != P2P_SC_SUCCESS)
3786                         p2p_check_after_scan_tx_continuation(p2p);
3787                 break;
3788         case P2P_PENDING_DEV_DISC_REQUEST:
3789                 p2p_dev_disc_req_cb(p2p, success);
3790                 break;
3791         case P2P_PENDING_DEV_DISC_RESPONSE:
3792                 p2p_dev_disc_resp_cb(p2p, success);
3793                 break;
3794         case P2P_PENDING_GO_DISC_REQ:
3795                 p2p_go_disc_req_cb(p2p, success);
3796                 break;
3797         }
3798
3799         p2p->after_scan_tx_in_progress = 0;
3800 }
3801
3802
3803 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3804                    unsigned int duration)
3805 {
3806         if (freq == p2p->pending_client_disc_freq) {
3807                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3808                 p2p->pending_client_disc_freq = 0;
3809                 return;
3810         }
3811
3812         if (freq != p2p->pending_listen_freq) {
3813                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3814                         freq, duration, p2p->pending_listen_freq);
3815                 return;
3816         }
3817
3818         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3819                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3820                 p2p->pending_listen_freq);
3821         p2p->in_listen = 1;
3822         p2p->drv_in_listen = freq;
3823         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3824                 /*
3825                  * Add 20 msec extra wait to avoid race condition with driver
3826                  * remain-on-channel end event, i.e., give driver more time to
3827                  * complete the operation before our timeout expires.
3828                  */
3829                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3830                                 p2p->pending_listen_usec + 20000);
3831         }
3832
3833         p2p->pending_listen_freq = 0;
3834 }
3835
3836
3837 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3838 {
3839         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3840         p2p->drv_in_listen = 0;
3841         if (p2p->in_listen)
3842                 return 0; /* Internal timeout will trigger the next step */
3843
3844         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3845                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3846                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3847                         p2p_go_neg_failed(p2p, -1);
3848                         return 0;
3849                 }
3850
3851                 p2p_set_state(p2p, P2P_CONNECT);
3852                 p2p_connect_send(p2p, p2p->go_neg_peer);
3853                 return 1;
3854         } else if (p2p->state == P2P_SEARCH) {
3855                 if (p2p->p2p_scan_running) {
3856                          /*
3857                           * Search is already in progress. This can happen if
3858                           * an Action frame RX is reported immediately after
3859                           * the end of a remain-on-channel operation and the
3860                           * response frame to that is sent using an offchannel
3861                           * operation while in p2p_find. Avoid an attempt to
3862                           * restart a scan here.
3863                           */
3864                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3865                         return 1;
3866                 }
3867                 if (p2p->pending_listen_freq) {
3868                         /*
3869                          * Better wait a bit if the driver is unable to start
3870                          * offchannel operation for some reason. p2p_search()
3871                          * will be started from internal timeout.
3872                          */
3873                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3874                         p2p_set_timeout(p2p, 0, 100000);
3875                         return 1;
3876                 }
3877                 if (p2p->search_delay) {
3878                         p2p_dbg(p2p, "Delay search operation by %u ms",
3879                                 p2p->search_delay);
3880                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3881                                         (p2p->search_delay % 1000) * 1000);
3882                         return 1;
3883                 }
3884                 p2p_search(p2p);
3885                 return 1;
3886         }
3887
3888         return 0;
3889 }
3890
3891
3892 static void p2p_timeout_connect(struct p2p_data *p2p)
3893 {
3894         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3895         if (p2p->go_neg_peer &&
3896             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3897                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3898                 p2p_go_neg_failed(p2p, -1);
3899                 return;
3900         }
3901         if (p2p->go_neg_peer &&
3902             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3903             p2p->go_neg_peer->connect_reqs < 120) {
3904                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3905                 p2p_connect_send(p2p, p2p->go_neg_peer);
3906                 return;
3907         }
3908         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3909                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3910                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3911                 p2p_set_timeout(p2p, 0, 30000);
3912                 return;
3913         }
3914         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3915         p2p_listen_in_find(p2p, 0);
3916 }
3917
3918
3919 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3920 {
3921         if (p2p->go_neg_peer) {
3922                 if (p2p->drv_in_listen) {
3923                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3924                         return;
3925                 }
3926
3927                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3928                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3929                         p2p_go_neg_failed(p2p, -1);
3930                         return;
3931                 }
3932
3933                 p2p_set_state(p2p, P2P_CONNECT);
3934                 p2p_connect_send(p2p, p2p->go_neg_peer);
3935         } else
3936                 p2p_set_state(p2p, P2P_IDLE);
3937 }
3938
3939
3940 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3941 {
3942         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3943
3944         if (p2p->cfg->is_concurrent_session_active &&
3945             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3946                 p2p_set_timeout(p2p, 0, 500000);
3947         else
3948                 p2p_set_timeout(p2p, 0, 200000);
3949 }
3950
3951
3952 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3953 {
3954         struct p2p_device *dev = p2p->go_neg_peer;
3955
3956         if (dev == NULL) {
3957                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3958                 return;
3959         }
3960
3961         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3962         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3963         p2p_listen_in_find(p2p, 0);
3964 }
3965
3966
3967 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3968 {
3969         p2p_dbg(p2p, "Service Discovery Query timeout");
3970         if (p2p->sd_peer) {
3971                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3972                 p2p->sd_peer = NULL;
3973         }
3974         p2p_continue_find(p2p);
3975 }
3976
3977
3978 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3979 {
3980         p2p_dbg(p2p, "Provision Discovery Request timeout");
3981         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3982         p2p_continue_find(p2p);
3983 }
3984
3985
3986 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3987 {
3988         u32 adv_id = 0;
3989         u8 *adv_mac = NULL;
3990
3991         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3992
3993         /*
3994          * For user initiated PD requests that we have not gotten any responses
3995          * for while in IDLE state, we retry them a couple of times before
3996          * giving up.
3997          */
3998         if (!p2p->user_initiated_pd)
3999                 return;
4000
4001         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4002
4003         if (p2p->pd_retries) {
4004                 p2p->pd_retries--;
4005                 p2p_retry_pd(p2p);
4006         } else {
4007                 struct p2p_device *dev;
4008                 int for_join = 0;
4009
4010                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4011                         if (os_memcmp(p2p->pending_pd_devaddr,
4012                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
4013                                 continue;
4014                         if (dev->req_config_methods &&
4015                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
4016                                 for_join = 1;
4017                 }
4018
4019                 if (p2p->p2ps_prov) {
4020                         adv_id = p2p->p2ps_prov->adv_id;
4021                         adv_mac = p2p->p2ps_prov->adv_mac;
4022                 }
4023
4024                 if (p2p->cfg->prov_disc_fail)
4025                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4026                                                  p2p->pending_pd_devaddr,
4027                                                  for_join ?
4028                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
4029                                                  P2P_PROV_DISC_TIMEOUT,
4030                                                  adv_id, adv_mac, NULL);
4031                 p2p_reset_pending_pd(p2p);
4032         }
4033 }
4034
4035
4036 static void p2p_timeout_invite(struct p2p_data *p2p)
4037 {
4038         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4039         p2p_set_state(p2p, P2P_INVITE_LISTEN);
4040         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4041                 /*
4042                  * Better remain on operating channel instead of listen channel
4043                  * when running a group.
4044                  */
4045                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4046                 p2p_set_timeout(p2p, 0, 100000);
4047                 return;
4048         }
4049         p2p_listen_in_find(p2p, 0);
4050 }
4051
4052
4053 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4054 {
4055         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4056                 p2p_set_state(p2p, P2P_INVITE);
4057                 p2p_invite_send(p2p, p2p->invite_peer,
4058                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4059         } else {
4060                 if (p2p->invite_peer) {
4061                         p2p_dbg(p2p, "Invitation Request retry limit reached");
4062                         if (p2p->cfg->invitation_result)
4063                                 p2p->cfg->invitation_result(
4064                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
4065                                         p2p->invite_peer->info.p2p_device_addr,
4066                                         0, 0);
4067                 }
4068                 p2p_set_state(p2p, P2P_IDLE);
4069         }
4070 }
4071
4072
4073 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4074 {
4075         struct p2p_data *p2p = eloop_ctx;
4076
4077         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4078
4079         p2p->in_listen = 0;
4080         if (p2p->drv_in_listen) {
4081                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4082                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4083         }
4084
4085         switch (p2p->state) {
4086         case P2P_IDLE:
4087                 /* Check if we timed out waiting for PD req */
4088                 if (p2p->pending_action_state == P2P_PENDING_PD)
4089                         p2p_timeout_prov_disc_req(p2p);
4090                 break;
4091         case P2P_SEARCH:
4092                 /* Check if we timed out waiting for PD req */
4093                 if (p2p->pending_action_state == P2P_PENDING_PD)
4094                         p2p_timeout_prov_disc_req(p2p);
4095                 if (p2p->search_delay && !p2p->in_search_delay) {
4096                         p2p_dbg(p2p, "Delay search operation by %u ms",
4097                                 p2p->search_delay);
4098                         p2p->in_search_delay = 1;
4099                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4100                                         (p2p->search_delay % 1000) * 1000);
4101                         break;
4102                 }
4103                 p2p->in_search_delay = 0;
4104                 p2p_search(p2p);
4105                 break;
4106         case P2P_CONNECT:
4107                 p2p_timeout_connect(p2p);
4108                 break;
4109         case P2P_CONNECT_LISTEN:
4110                 p2p_timeout_connect_listen(p2p);
4111                 break;
4112         case P2P_GO_NEG:
4113                 break;
4114         case P2P_LISTEN_ONLY:
4115                 /* Check if we timed out waiting for PD req */
4116                 if (p2p->pending_action_state == P2P_PENDING_PD)
4117                         p2p_timeout_prov_disc_req(p2p);
4118
4119                 if (p2p->ext_listen_only) {
4120                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4121                         p2p->ext_listen_only = 0;
4122                         p2p_set_state(p2p, P2P_IDLE);
4123                 }
4124                 break;
4125         case P2P_WAIT_PEER_CONNECT:
4126                 p2p_timeout_wait_peer_connect(p2p);
4127                 break;
4128         case P2P_WAIT_PEER_IDLE:
4129                 p2p_timeout_wait_peer_idle(p2p);
4130                 break;
4131         case P2P_SD_DURING_FIND:
4132                 p2p_timeout_sd_during_find(p2p);
4133                 break;
4134         case P2P_PROVISIONING:
4135                 break;
4136         case P2P_PD_DURING_FIND:
4137                 p2p_timeout_prov_disc_during_find(p2p);
4138                 break;
4139         case P2P_INVITE:
4140                 p2p_timeout_invite(p2p);
4141                 break;
4142         case P2P_INVITE_LISTEN:
4143                 p2p_timeout_invite_listen(p2p);
4144                 break;
4145         }
4146 }
4147
4148
4149 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4150 {
4151         struct p2p_device *dev;
4152
4153         dev = p2p_get_device(p2p, peer_addr);
4154         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4155                 MACSTR, MAC2STR(peer_addr));
4156         if (dev == NULL) {
4157                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4158                 return -1;
4159         }
4160         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4161         dev->flags |= P2P_DEV_USER_REJECTED;
4162         return 0;
4163 }
4164
4165
4166 const char * p2p_wps_method_text(enum p2p_wps_method method)
4167 {
4168         switch (method) {
4169         case WPS_NOT_READY:
4170                 return "not-ready";
4171         case WPS_PIN_DISPLAY:
4172                 return "Display";
4173         case WPS_PIN_KEYPAD:
4174                 return "Keypad";
4175         case WPS_PBC:
4176                 return "PBC";
4177         case WPS_NFC:
4178                 return "NFC";
4179         case WPS_P2PS:
4180                 return "P2PS";
4181         }
4182
4183         return "??";
4184 }
4185
4186
4187 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4188 {
4189         switch (go_state) {
4190         case UNKNOWN_GO:
4191                 return "unknown";
4192         case LOCAL_GO:
4193                 return "local";
4194         case  REMOTE_GO:
4195                 return "remote";
4196         }
4197
4198         return "??";
4199 }
4200
4201
4202 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4203                                                const u8 *addr, int next)
4204 {
4205         struct p2p_device *dev;
4206
4207         if (addr)
4208                 dev = p2p_get_device(p2p, addr);
4209         else
4210                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4211
4212         if (dev && next) {
4213                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4214                 if (&dev->list == &p2p->devices)
4215                         dev = NULL;
4216         }
4217
4218         if (dev == NULL)
4219                 return NULL;
4220
4221         return &dev->info;
4222 }
4223
4224
4225 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4226                           char *buf, size_t buflen)
4227 {
4228         struct p2p_device *dev;
4229         int res;
4230         char *pos, *end;
4231         struct os_reltime now;
4232
4233         if (info == NULL)
4234                 return -1;
4235
4236         dev = (struct p2p_device *) (((u8 *) info) -
4237                                      offsetof(struct p2p_device, info));
4238
4239         pos = buf;
4240         end = buf + buflen;
4241
4242         os_get_reltime(&now);
4243         res = os_snprintf(pos, end - pos,
4244                           "age=%d\n"
4245                           "listen_freq=%d\n"
4246                           "wps_method=%s\n"
4247                           "interface_addr=" MACSTR "\n"
4248                           "member_in_go_dev=" MACSTR "\n"
4249                           "member_in_go_iface=" MACSTR "\n"
4250                           "go_neg_req_sent=%d\n"
4251                           "go_state=%s\n"
4252                           "dialog_token=%u\n"
4253                           "intended_addr=" MACSTR "\n"
4254                           "country=%c%c\n"
4255                           "oper_freq=%d\n"
4256                           "req_config_methods=0x%x\n"
4257                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4258                           "status=%d\n"
4259                           "invitation_reqs=%u\n",
4260                           (int) (now.sec - dev->last_seen.sec),
4261                           dev->listen_freq,
4262                           p2p_wps_method_text(dev->wps_method),
4263                           MAC2STR(dev->interface_addr),
4264                           MAC2STR(dev->member_in_go_dev),
4265                           MAC2STR(dev->member_in_go_iface),
4266                           dev->go_neg_req_sent,
4267                           p2p_go_state_text(dev->go_state),
4268                           dev->dialog_token,
4269                           MAC2STR(dev->intended_addr),
4270                           dev->country[0] ? dev->country[0] : '_',
4271                           dev->country[1] ? dev->country[1] : '_',
4272                           dev->oper_freq,
4273                           dev->req_config_methods,
4274                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4275                           "[PROBE_REQ_ONLY]" : "",
4276                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4277                           dev->flags & P2P_DEV_NOT_YET_READY ?
4278                           "[NOT_YET_READY]" : "",
4279                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4280                           "[PD_PEER_DISPLAY]" : "",
4281                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4282                           "[PD_PEER_KEYPAD]" : "",
4283                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4284                           "[PD_PEER_P2PS]" : "",
4285                           dev->flags & P2P_DEV_USER_REJECTED ?
4286                           "[USER_REJECTED]" : "",
4287                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4288                           "[PEER_WAITING_RESPONSE]" : "",
4289                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4290                           "[PREFER_PERSISTENT_GROUP]" : "",
4291                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4292                           "[WAIT_GO_NEG_RESPONSE]" : "",
4293                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4294                           "[WAIT_GO_NEG_CONFIRM]" : "",
4295                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4296                           "[GROUP_CLIENT_ONLY]" : "",
4297                           dev->flags & P2P_DEV_FORCE_FREQ ?
4298                           "[FORCE_FREQ]" : "",
4299                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4300                           "[PD_FOR_JOIN]" : "",
4301                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4302                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4303                           dev->status,
4304                           dev->invitation_reqs);
4305         if (os_snprintf_error(end - pos, res))
4306                 return pos - buf;
4307         pos += res;
4308
4309         if (dev->ext_listen_period) {
4310                 res = os_snprintf(pos, end - pos,
4311                                   "ext_listen_period=%u\n"
4312                                   "ext_listen_interval=%u\n",
4313                                   dev->ext_listen_period,
4314                                   dev->ext_listen_interval);
4315                 if (os_snprintf_error(end - pos, res))
4316                         return pos - buf;
4317                 pos += res;
4318         }
4319
4320         if (dev->oper_ssid_len) {
4321                 res = os_snprintf(pos, end - pos,
4322                                   "oper_ssid=%s\n",
4323                                   wpa_ssid_txt(dev->oper_ssid,
4324                                                dev->oper_ssid_len));
4325                 if (os_snprintf_error(end - pos, res))
4326                         return pos - buf;
4327                 pos += res;
4328         }
4329
4330 #ifdef CONFIG_WIFI_DISPLAY
4331         if (dev->info.wfd_subelems) {
4332                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4333                 if (os_snprintf_error(end - pos, res))
4334                         return pos - buf;
4335                 pos += res;
4336
4337                 pos += wpa_snprintf_hex(pos, end - pos,
4338                                         wpabuf_head(dev->info.wfd_subelems),
4339                                         wpabuf_len(dev->info.wfd_subelems));
4340
4341                 res = os_snprintf(pos, end - pos, "\n");
4342                 if (os_snprintf_error(end - pos, res))
4343                         return pos - buf;
4344                 pos += res;
4345         }
4346 #endif /* CONFIG_WIFI_DISPLAY */
4347
4348         return pos - buf;
4349 }
4350
4351
4352 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4353 {
4354         return p2p_get_device(p2p, addr) != NULL;
4355 }
4356
4357
4358 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4359 {
4360         if (enabled) {
4361                 p2p_dbg(p2p, "Client discoverability enabled");
4362                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4363         } else {
4364                 p2p_dbg(p2p, "Client discoverability disabled");
4365                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4366         }
4367 }
4368
4369
4370 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4371                                               u32 duration2, u32 interval2)
4372 {
4373         struct wpabuf *req;
4374         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4375         u8 *len;
4376
4377         req = wpabuf_alloc(100);
4378         if (req == NULL)
4379                 return NULL;
4380
4381         if (duration1 || interval1) {
4382                 os_memset(&desc1, 0, sizeof(desc1));
4383                 desc1.count_type = 1;
4384                 desc1.duration = duration1;
4385                 desc1.interval = interval1;
4386                 ptr1 = &desc1;
4387
4388                 if (duration2 || interval2) {
4389                         os_memset(&desc2, 0, sizeof(desc2));
4390                         desc2.count_type = 2;
4391                         desc2.duration = duration2;
4392                         desc2.interval = interval2;
4393                         ptr2 = &desc2;
4394                 }
4395         }
4396
4397         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4398         len = p2p_buf_add_ie_hdr(req);
4399         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4400         p2p_buf_update_ie_hdr(req, len);
4401
4402         return req;
4403 }
4404
4405
4406 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4407                      const u8 *own_interface_addr, unsigned int freq,
4408                      u32 duration1, u32 interval1, u32 duration2,
4409                      u32 interval2)
4410 {
4411         struct wpabuf *req;
4412
4413         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4414                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4415                 "dur2=%u int2=%u",
4416                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4417                 freq, duration1, interval1, duration2, interval2);
4418
4419         req = p2p_build_presence_req(duration1, interval1, duration2,
4420                                      interval2);
4421         if (req == NULL)
4422                 return -1;
4423
4424         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4425         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4426                             go_interface_addr,
4427                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4428                 p2p_dbg(p2p, "Failed to send Action frame");
4429         }
4430         wpabuf_free(req);
4431
4432         return 0;
4433 }
4434
4435
4436 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4437                                                size_t noa_len, u8 dialog_token)
4438 {
4439         struct wpabuf *resp;
4440         u8 *len;
4441
4442         resp = wpabuf_alloc(100 + noa_len);
4443         if (resp == NULL)
4444                 return NULL;
4445
4446         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4447         len = p2p_buf_add_ie_hdr(resp);
4448         p2p_buf_add_status(resp, status);
4449         if (noa) {
4450                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4451                 wpabuf_put_le16(resp, noa_len);
4452                 wpabuf_put_data(resp, noa, noa_len);
4453         } else
4454                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4455         p2p_buf_update_ie_hdr(resp, len);
4456
4457         return resp;
4458 }
4459
4460
4461 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4462                                      const u8 *sa, const u8 *data, size_t len,
4463                                      int rx_freq)
4464 {
4465         struct p2p_message msg;
4466         u8 status;
4467         struct wpabuf *resp;
4468         size_t g;
4469         struct p2p_group *group = NULL;
4470         int parsed = 0;
4471         u8 noa[50];
4472         int noa_len;
4473
4474         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4475
4476         for (g = 0; g < p2p->num_groups; g++) {
4477                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4478                               ETH_ALEN) == 0) {
4479                         group = p2p->groups[g];
4480                         break;
4481                 }
4482         }
4483         if (group == NULL) {
4484                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4485                         MACSTR, MAC2STR(da));
4486                 return;
4487         }
4488
4489         if (p2p_parse(data, len, &msg) < 0) {
4490                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4491                 status = P2P_SC_FAIL_INVALID_PARAMS;
4492                 goto fail;
4493         }
4494         parsed = 1;
4495
4496         if (msg.noa == NULL) {
4497                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4498                 status = P2P_SC_FAIL_INVALID_PARAMS;
4499                 goto fail;
4500         }
4501
4502         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4503
4504 fail:
4505         if (p2p->cfg->get_noa)
4506                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4507                                             sizeof(noa));
4508         else
4509                 noa_len = -1;
4510         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4511                                        noa_len > 0 ? noa_len : 0,
4512                                        msg.dialog_token);
4513         if (parsed)
4514                 p2p_parse_free(&msg);
4515         if (resp == NULL)
4516                 return;
4517
4518         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4519         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4520                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4521                 p2p_dbg(p2p, "Failed to send Action frame");
4522         }
4523         wpabuf_free(resp);
4524 }
4525
4526
4527 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4528                                       const u8 *sa, const u8 *data, size_t len)
4529 {
4530         struct p2p_message msg;
4531
4532         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4533
4534         if (p2p_parse(data, len, &msg) < 0) {
4535                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4536                 return;
4537         }
4538
4539         if (msg.status == NULL || msg.noa == NULL) {
4540                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4541                 p2p_parse_free(&msg);
4542                 return;
4543         }
4544
4545         if (p2p->cfg->presence_resp) {
4546                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4547                                         msg.noa, msg.noa_len);
4548         }
4549
4550         if (*msg.status) {
4551                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4552                         *msg.status);
4553                 p2p_parse_free(&msg);
4554                 return;
4555         }
4556
4557         p2p_dbg(p2p, "P2P Presence Request was accepted");
4558         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4559                     msg.noa, msg.noa_len);
4560         /* TODO: process NoA */
4561         p2p_parse_free(&msg);
4562 }
4563
4564
4565 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4566 {
4567         struct p2p_data *p2p = eloop_ctx;
4568
4569         if (p2p->ext_listen_interval) {
4570                 /* Schedule next extended listen timeout */
4571                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4572                                        p2p->ext_listen_interval_usec,
4573                                        p2p_ext_listen_timeout, p2p, NULL);
4574         }
4575
4576         if ((p2p->cfg->is_p2p_in_progress &&
4577              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4578             (p2p->pending_action_state == P2P_PENDING_PD &&
4579              p2p->pd_retries > 0)) {
4580                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4581                         p2p_state_txt(p2p->state));
4582                 return;
4583         }
4584
4585         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4586                 /*
4587                  * This should not really happen, but it looks like the Listen
4588                  * command may fail is something else (e.g., a scan) was
4589                  * running at an inconvenient time. As a workaround, allow new
4590                  * Extended Listen operation to be started.
4591                  */
4592                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4593                 p2p->ext_listen_only = 0;
4594                 p2p_set_state(p2p, P2P_IDLE);
4595         }
4596
4597         if (p2p->state != P2P_IDLE) {
4598                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4599                 return;
4600         }
4601
4602         p2p_dbg(p2p, "Extended Listen timeout");
4603         p2p->ext_listen_only = 1;
4604         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4605                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4606                 p2p->ext_listen_only = 0;
4607         }
4608 }
4609
4610
4611 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4612                    unsigned int interval)
4613 {
4614         if (period > 65535 || interval > 65535 || period > interval ||
4615             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4616                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4617                         period, interval);
4618                 return -1;
4619         }
4620
4621         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4622
4623         if (interval == 0) {
4624                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4625                 p2p->ext_listen_period = 0;
4626                 p2p->ext_listen_interval = 0;
4627                 return 0;
4628         }
4629
4630         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4631                 period, interval);
4632         p2p->ext_listen_period = period;
4633         p2p->ext_listen_interval = interval;
4634         p2p->ext_listen_interval_sec = interval / 1000;
4635         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4636
4637         eloop_register_timeout(p2p->ext_listen_interval_sec,
4638                                p2p->ext_listen_interval_usec,
4639                                p2p_ext_listen_timeout, p2p, NULL);
4640
4641         return 0;
4642 }
4643
4644
4645 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4646                       const u8 *ie, size_t ie_len)
4647 {
4648         struct p2p_message msg;
4649
4650         if (bssid == NULL || ie == NULL)
4651                 return;
4652
4653         os_memset(&msg, 0, sizeof(msg));
4654         if (p2p_parse_ies(ie, ie_len, &msg))
4655                 return;
4656         if (msg.minor_reason_code == NULL) {
4657                 p2p_parse_free(&msg);
4658                 return;
4659         }
4660
4661         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4662                 " reason_code=%u minor_reason_code=%u",
4663                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4664
4665         p2p_parse_free(&msg);
4666 }
4667
4668
4669 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4670                         const u8 *ie, size_t ie_len)
4671 {
4672         struct p2p_message msg;
4673
4674         if (bssid == NULL || ie == NULL)
4675                 return;
4676
4677         os_memset(&msg, 0, sizeof(msg));
4678         if (p2p_parse_ies(ie, ie_len, &msg))
4679                 return;
4680         if (msg.minor_reason_code == NULL) {
4681                 p2p_parse_free(&msg);
4682                 return;
4683         }
4684
4685         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4686                 " reason_code=%u minor_reason_code=%u",
4687                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4688
4689         p2p_parse_free(&msg);
4690 }
4691
4692
4693 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4694 {
4695         if (enabled) {
4696                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4697                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4698         } else {
4699                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4700                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4701         }
4702 }
4703
4704
4705 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4706                                  u8 *op_channel)
4707 {
4708         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4709 }
4710
4711
4712 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4713                            u8 forced)
4714 {
4715         if (p2p_channel_to_freq(reg_class, channel) < 0)
4716                 return -1;
4717
4718         /*
4719          * Listen channel was set in configuration or set by control interface;
4720          * cannot override it.
4721          */
4722         if (p2p->cfg->channel_forced && forced == 0) {
4723                 p2p_dbg(p2p,
4724                         "Listen channel was previously configured - do not override based on optimization");
4725                 return -1;
4726         }
4727
4728         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4729                 reg_class, channel);
4730
4731         if (p2p->state == P2P_IDLE) {
4732                 p2p->cfg->reg_class = reg_class;
4733                 p2p->cfg->channel = channel;
4734                 p2p->cfg->channel_forced = forced;
4735         } else {
4736                 p2p_dbg(p2p, "Defer setting listen channel");
4737                 p2p->pending_reg_class = reg_class;
4738                 p2p->pending_channel = channel;
4739                 p2p->pending_channel_forced = forced;
4740         }
4741
4742         return 0;
4743 }
4744
4745
4746 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4747 {
4748         return p2p->cfg->channel;
4749 }
4750
4751
4752 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4753 {
4754         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4755         if (postfix == NULL) {
4756                 p2p->cfg->ssid_postfix_len = 0;
4757                 return 0;
4758         }
4759         if (len > sizeof(p2p->cfg->ssid_postfix))
4760                 return -1;
4761         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4762         p2p->cfg->ssid_postfix_len = len;
4763         return 0;
4764 }
4765
4766
4767 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4768                          int cfg_op_channel)
4769 {
4770         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4771                 return -1;
4772
4773         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4774                 op_reg_class, op_channel);
4775         p2p->cfg->op_reg_class = op_reg_class;
4776         p2p->cfg->op_channel = op_channel;
4777         p2p->cfg->cfg_op_channel = cfg_op_channel;
4778         return 0;
4779 }
4780
4781
4782 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4783                       const struct p2p_channel *pref_chan)
4784 {
4785         struct p2p_channel *n;
4786
4787         if (pref_chan) {
4788                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4789                 if (n == NULL)
4790                         return -1;
4791                 os_memcpy(n, pref_chan,
4792                           num_pref_chan * sizeof(struct p2p_channel));
4793         } else
4794                 n = NULL;
4795
4796         os_free(p2p->cfg->pref_chan);
4797         p2p->cfg->pref_chan = n;
4798         p2p->cfg->num_pref_chan = num_pref_chan;
4799
4800         return 0;
4801 }
4802
4803
4804 int p2p_set_no_go_freq(struct p2p_data *p2p,
4805                        const struct wpa_freq_range_list *list)
4806 {
4807         struct wpa_freq_range *tmp;
4808
4809         if (list == NULL || list->num == 0) {
4810                 os_free(p2p->no_go_freq.range);
4811                 p2p->no_go_freq.range = NULL;
4812                 p2p->no_go_freq.num = 0;
4813                 return 0;
4814         }
4815
4816         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4817         if (tmp == NULL)
4818                 return -1;
4819         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4820         os_free(p2p->no_go_freq.range);
4821         p2p->no_go_freq.range = tmp;
4822         p2p->no_go_freq.num = list->num;
4823         p2p_dbg(p2p, "Updated no GO chan list");
4824
4825         return 0;
4826 }
4827
4828
4829 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4830                            u8 *iface_addr)
4831 {
4832         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4833         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4834                 return -1;
4835         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4836         return 0;
4837 }
4838
4839
4840 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4841                            u8 *dev_addr)
4842 {
4843         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4844         if (dev == NULL)
4845                 return -1;
4846         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4847         return 0;
4848 }
4849
4850
4851 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4852 {
4853         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4854         if (is_zero_ether_addr(p2p->peer_filter))
4855                 p2p_dbg(p2p, "Disable peer filter");
4856         else
4857                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4858                         MAC2STR(p2p->peer_filter));
4859 }
4860
4861
4862 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4863 {
4864         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4865         if (p2p->cross_connect == enabled)
4866                 return;
4867         p2p->cross_connect = enabled;
4868         /* TODO: may need to tear down any action group where we are GO(?) */
4869 }
4870
4871
4872 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4873 {
4874         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4875         if (dev == NULL)
4876                 return -1;
4877         if (dev->oper_freq <= 0)
4878                 return -1;
4879         return dev->oper_freq;
4880 }
4881
4882
4883 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4884 {
4885         p2p_dbg(p2p, "Intra BSS distribution %s",
4886                 enabled ? "enabled" : "disabled");
4887         p2p->cfg->p2p_intra_bss = enabled;
4888 }
4889
4890
4891 void p2p_update_channel_list(struct p2p_data *p2p,
4892                              const struct p2p_channels *chan,
4893                              const struct p2p_channels *cli_chan)
4894 {
4895         p2p_dbg(p2p, "Update channel list");
4896         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4897         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4898         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4899                   sizeof(struct p2p_channels));
4900         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4901 }
4902
4903
4904 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4905                     const u8 *src, const u8 *bssid, const u8 *buf,
4906                     size_t len, unsigned int wait_time)
4907 {
4908         if (p2p->p2p_scan_running) {
4909                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4910                 if (p2p->after_scan_tx) {
4911                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4912                         os_free(p2p->after_scan_tx);
4913                 }
4914                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4915                                                len);
4916                 if (p2p->after_scan_tx == NULL)
4917                         return -1;
4918                 p2p->after_scan_tx->freq = freq;
4919                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4920                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4921                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4922                 p2p->after_scan_tx->len = len;
4923                 p2p->after_scan_tx->wait_time = wait_time;
4924                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4925                 return 0;
4926         }
4927
4928         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4929                                      buf, len, wait_time);
4930 }
4931
4932
4933 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4934                            int freq_overall)
4935 {
4936         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4937                 freq_24, freq_5, freq_overall);
4938         p2p->best_freq_24 = freq_24;
4939         p2p->best_freq_5 = freq_5;
4940         p2p->best_freq_overall = freq_overall;
4941 }
4942
4943
4944 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4945 {
4946         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4947         p2p->own_freq_preference = freq;
4948 }
4949
4950
4951 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4952 {
4953         if (p2p == NULL || p2p->go_neg_peer == NULL)
4954                 return NULL;
4955         return p2p->go_neg_peer->info.p2p_device_addr;
4956 }
4957
4958
4959 const struct p2p_peer_info *
4960 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4961 {
4962         struct p2p_device *dev;
4963
4964         if (addr) {
4965                 dev = p2p_get_device(p2p, addr);
4966                 if (!dev)
4967                         return NULL;
4968
4969                 if (!next) {
4970                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4971                                 return NULL;
4972
4973                         return &dev->info;
4974                 } else {
4975                         do {
4976                                 dev = dl_list_first(&dev->list,
4977                                                     struct p2p_device,
4978                                                     list);
4979                                 if (!dev || &dev->list == &p2p->devices)
4980                                         return NULL;
4981                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4982                 }
4983         } else {
4984                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4985                 if (!dev)
4986                         return NULL;
4987                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4988                         dev = dl_list_first(&dev->list,
4989                                             struct p2p_device,
4990                                             list);
4991                         if (!dev || &dev->list == &p2p->devices)
4992                                 return NULL;
4993                 }
4994         }
4995
4996         return &dev->info;
4997 }
4998
4999
5000 int p2p_in_progress(struct p2p_data *p2p)
5001 {
5002         if (p2p == NULL)
5003                 return 0;
5004         if (p2p->state == P2P_SEARCH)
5005                 return 2;
5006         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5007 }
5008
5009
5010 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5011                             u8 client_timeout)
5012 {
5013         if (p2p) {
5014                 p2p->go_timeout = go_timeout;
5015                 p2p->client_timeout = client_timeout;
5016         }
5017 }
5018
5019
5020 #ifdef CONFIG_WIFI_DISPLAY
5021
5022 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5023 {
5024         size_t g;
5025         struct p2p_group *group;
5026
5027         for (g = 0; g < p2p->num_groups; g++) {
5028                 group = p2p->groups[g];
5029                 p2p_group_force_beacon_update_ies(group);
5030         }
5031 }
5032
5033
5034 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5035 {
5036         wpabuf_free(p2p->wfd_ie_beacon);
5037         p2p->wfd_ie_beacon = ie;
5038         p2p_update_wfd_ie_groups(p2p);
5039         return 0;
5040 }
5041
5042
5043 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5044 {
5045         wpabuf_free(p2p->wfd_ie_probe_req);
5046         p2p->wfd_ie_probe_req = ie;
5047         return 0;
5048 }
5049
5050
5051 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5052 {
5053         wpabuf_free(p2p->wfd_ie_probe_resp);
5054         p2p->wfd_ie_probe_resp = ie;
5055         p2p_update_wfd_ie_groups(p2p);
5056         return 0;
5057 }
5058
5059
5060 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5061 {
5062         wpabuf_free(p2p->wfd_ie_assoc_req);
5063         p2p->wfd_ie_assoc_req = ie;
5064         return 0;
5065 }
5066
5067
5068 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5069 {
5070         wpabuf_free(p2p->wfd_ie_invitation);
5071         p2p->wfd_ie_invitation = ie;
5072         return 0;
5073 }
5074
5075
5076 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5077 {
5078         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5079         p2p->wfd_ie_prov_disc_req = ie;
5080         return 0;
5081 }
5082
5083
5084 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5085 {
5086         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5087         p2p->wfd_ie_prov_disc_resp = ie;
5088         return 0;
5089 }
5090
5091
5092 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5093 {
5094         wpabuf_free(p2p->wfd_ie_go_neg);
5095         p2p->wfd_ie_go_neg = ie;
5096         return 0;
5097 }
5098
5099
5100 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5101 {
5102         wpabuf_free(p2p->wfd_dev_info);
5103         if (elem) {
5104                 p2p->wfd_dev_info = wpabuf_dup(elem);
5105                 if (p2p->wfd_dev_info == NULL)
5106                         return -1;
5107         } else
5108                 p2p->wfd_dev_info = NULL;
5109
5110         return 0;
5111 }
5112
5113
5114 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5115 {
5116         wpabuf_free(p2p->wfd_assoc_bssid);
5117         if (elem) {
5118                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5119                 if (p2p->wfd_assoc_bssid == NULL)
5120                         return -1;
5121         } else
5122                 p2p->wfd_assoc_bssid = NULL;
5123
5124         return 0;
5125 }
5126
5127
5128 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5129                                   const struct wpabuf *elem)
5130 {
5131         wpabuf_free(p2p->wfd_coupled_sink_info);
5132         if (elem) {
5133                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5134                 if (p2p->wfd_coupled_sink_info == NULL)
5135                         return -1;
5136         } else
5137                 p2p->wfd_coupled_sink_info = NULL;
5138
5139         return 0;
5140 }
5141
5142 #endif /* CONFIG_WIFI_DISPLAY */
5143
5144
5145 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5146                      int max_disc_tu)
5147 {
5148         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5149                 return -1;
5150
5151         p2p->min_disc_int = min_disc_int;
5152         p2p->max_disc_int = max_disc_int;
5153         p2p->max_disc_tu = max_disc_tu;
5154         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5155                 min_disc_int, max_disc_int, max_disc_tu);
5156
5157         return 0;
5158 }
5159
5160
5161 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5162 {
5163         va_list ap;
5164         char buf[500];
5165
5166         if (!p2p->cfg->debug_print)
5167                 return;
5168
5169         va_start(ap, fmt);
5170         vsnprintf(buf, sizeof(buf), fmt, ap);
5171         buf[sizeof(buf) - 1] = '\0';
5172         va_end(ap);
5173         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5174 }
5175
5176
5177 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5178 {
5179         va_list ap;
5180         char buf[500];
5181
5182         if (!p2p->cfg->debug_print)
5183                 return;
5184
5185         va_start(ap, fmt);
5186         vsnprintf(buf, sizeof(buf), fmt, ap);
5187         buf[sizeof(buf) - 1] = '\0';
5188         va_end(ap);
5189         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5190 }
5191
5192
5193 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5194 {
5195         va_list ap;
5196         char buf[500];
5197
5198         if (!p2p->cfg->debug_print)
5199                 return;
5200
5201         va_start(ap, fmt);
5202         vsnprintf(buf, sizeof(buf), fmt, ap);
5203         buf[sizeof(buf) - 1] = '\0';
5204         va_end(ap);
5205         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5206 }
5207
5208
5209 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5210                              void (*peer_callback)(struct p2p_peer_info *peer,
5211                                                    void *user_data),
5212                              void *user_data)
5213 {
5214         struct p2p_device *dev, *n;
5215
5216         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5217                 peer_callback(&dev->info, user_data);
5218         }
5219 }
5220
5221
5222 #ifdef CONFIG_WPS_NFC
5223
5224 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5225                                               int client_freq,
5226                                               const u8 *go_dev_addr,
5227                                               const u8 *ssid, size_t ssid_len)
5228 {
5229         struct wpabuf *buf;
5230         u8 op_class, channel;
5231         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5232
5233         buf = wpabuf_alloc(1000);
5234         if (buf == NULL)
5235                 return NULL;
5236
5237         op_class = p2p->cfg->reg_class;
5238         channel = p2p->cfg->channel;
5239
5240         p2p_buf_add_capability(buf, p2p->dev_capab &
5241                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5242         p2p_buf_add_device_info(buf, p2p, NULL);
5243
5244         if (p2p->num_groups > 0) {
5245                 int freq = p2p_group_get_freq(p2p->groups[0]);
5246                 role = P2P_GO_IN_A_GROUP;
5247                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5248                         p2p_dbg(p2p,
5249                                 "Unknown GO operating frequency %d MHz for NFC handover",
5250                                 freq);
5251                         wpabuf_free(buf);
5252                         return NULL;
5253                 }
5254         } else if (client_freq > 0) {
5255                 role = P2P_CLIENT_IN_A_GROUP;
5256                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5257                         p2p_dbg(p2p,
5258                                 "Unknown client operating frequency %d MHz for NFC handover",
5259                                 client_freq);
5260                         wpabuf_free(buf);
5261                         return NULL;
5262                 }
5263         }
5264
5265         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5266                                        channel, role);
5267
5268         if (p2p->num_groups > 0) {
5269                 /* Limit number of clients to avoid very long message */
5270                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5271                 p2p_group_buf_add_id(p2p->groups[0], buf);
5272         } else if (client_freq > 0 &&
5273                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5274                    ssid && ssid_len > 0) {
5275                 /*
5276                  * Add the optional P2P Group ID to indicate in which group this
5277                  * device is a P2P Client.
5278                  */
5279                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5280         }
5281
5282         return buf;
5283 }
5284
5285
5286 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5287                                            int client_freq,
5288                                            const u8 *go_dev_addr,
5289                                            const u8 *ssid, size_t ssid_len)
5290 {
5291         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5292                                       ssid_len);
5293 }
5294
5295
5296 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5297                                            int client_freq,
5298                                            const u8 *go_dev_addr,
5299                                            const u8 *ssid, size_t ssid_len)
5300 {
5301         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5302                                       ssid_len);
5303 }
5304
5305
5306 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5307                                         struct p2p_nfc_params *params)
5308 {
5309         struct p2p_message msg;
5310         struct p2p_device *dev;
5311         const u8 *p2p_dev_addr;
5312         int freq;
5313         enum p2p_role_indication role;
5314
5315         params->next_step = NO_ACTION;
5316
5317         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5318                                    params->p2p_attr, params->p2p_len, &msg)) {
5319                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5320                 p2p_parse_free(&msg);
5321                 return -1;
5322         }
5323
5324         if (msg.p2p_device_addr)
5325                 p2p_dev_addr = msg.p2p_device_addr;
5326         else if (msg.device_id)
5327                 p2p_dev_addr = msg.device_id;
5328         else {
5329                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5330                 p2p_parse_free(&msg);
5331                 return -1;
5332         }
5333
5334         if (msg.oob_dev_password) {
5335                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5336                           msg.oob_dev_password_len);
5337                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5338         }
5339
5340         dev = p2p_create_device(p2p, p2p_dev_addr);
5341         if (dev == NULL) {
5342                 p2p_parse_free(&msg);
5343                 return -1;
5344         }
5345
5346         params->peer = &dev->info;
5347
5348         os_get_reltime(&dev->last_seen);
5349         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5350         p2p_copy_wps_info(p2p, dev, 0, &msg);
5351
5352         if (!msg.oob_go_neg_channel) {
5353                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5354                 p2p_parse_free(&msg);
5355                 return -1;
5356         }
5357
5358         if (msg.oob_go_neg_channel[3] == 0 &&
5359             msg.oob_go_neg_channel[4] == 0)
5360                 freq = 0;
5361         else
5362                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5363                                            msg.oob_go_neg_channel[4]);
5364         if (freq < 0) {
5365                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5366                 p2p_parse_free(&msg);
5367                 return -1;
5368         }
5369         role = msg.oob_go_neg_channel[5];
5370
5371         if (role == P2P_GO_IN_A_GROUP) {
5372                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5373                 params->go_freq = freq;
5374         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5375                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5376                         freq);
5377                 params->go_freq = freq;
5378         } else
5379                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5380         dev->oob_go_neg_freq = freq;
5381
5382         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5383                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5384                                            p2p->cfg->channel);
5385                 if (freq < 0) {
5386                         p2p_dbg(p2p, "Own listen channel not known");
5387                         p2p_parse_free(&msg);
5388                         return -1;
5389                 }
5390                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5391                 dev->oob_go_neg_freq = freq;
5392         }
5393
5394         if (msg.group_id) {
5395                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5396                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5397                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5398                           params->go_ssid_len);
5399         }
5400
5401         if (dev->flags & P2P_DEV_USER_REJECTED) {
5402                 p2p_dbg(p2p, "Do not report rejected device");
5403                 p2p_parse_free(&msg);
5404                 return 0;
5405         }
5406
5407         if (!(dev->flags & P2P_DEV_REPORTED)) {
5408                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5409                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5410                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5411         }
5412         p2p_parse_free(&msg);
5413
5414         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5415                 params->next_step = BOTH_GO;
5416         else if (role == P2P_GO_IN_A_GROUP)
5417                 params->next_step = JOIN_GROUP;
5418         else if (role == P2P_CLIENT_IN_A_GROUP) {
5419                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5420                 params->next_step = PEER_CLIENT;
5421         } else if (p2p->num_groups > 0)
5422                 params->next_step = AUTH_JOIN;
5423         else if (params->sel)
5424                 params->next_step = INIT_GO_NEG;
5425         else
5426                 params->next_step = RESP_GO_NEG;
5427
5428         return 0;
5429 }
5430
5431
5432 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5433                                       int go_intent,
5434                                       const u8 *own_interface_addr)
5435 {
5436
5437         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5438         if (dev_pw_id == 0) {
5439                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5440                 return;
5441         }
5442
5443         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5444                 dev_pw_id);
5445
5446         p2p->go_intent = go_intent;
5447         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5448 }
5449
5450 #endif /* CONFIG_WPS_NFC */
5451
5452
5453 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5454 {
5455         if (len < 8 || len > 63)
5456                 return -1;
5457         p2p->cfg->passphrase_len = len;
5458         return 0;
5459 }
5460
5461
5462 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5463 {
5464         p2p->vendor_elem = vendor_elem;
5465 }
5466
5467
5468 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5469 {
5470         struct p2p_data *p2p = eloop_ctx;
5471
5472         p2p_dbg(p2p,
5473                 "Timeout on waiting peer to become ready for GO Negotiation");
5474         p2p_go_neg_failed(p2p, -1);
5475 }
5476
5477
5478 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5479                                 const unsigned int *pref_freq_list,
5480                                 unsigned int size)
5481 {
5482         unsigned int i;
5483
5484         if (size > P2P_MAX_PREF_CHANNELS)
5485                 size = P2P_MAX_PREF_CHANNELS;
5486         p2p->num_pref_freq = size;
5487         for (i = 0; i < size; i++) {
5488                 p2p->pref_freq_list[i] = pref_freq_list[i];
5489                 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5490                         i, p2p->pref_freq_list[i]);
5491         }
5492 }