libeap/src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/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         wpabuf_free(dev->info.p2ps_instance);
 792         dev->info.p2ps_instance = NULL;
 793         if (msg.adv_service_instance && msg.adv_service_instance_len)
 794                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 795                         msg.adv_service_instance, msg.adv_service_instance_len);
 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 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2238                                     struct wpabuf *ies,
2239                                     const u8 *addr, int rx_freq)
2240 {
2241         struct ieee80211_mgmt *resp;
2242         u8 channel, op_class;
2243
2244         resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2245                                         u.probe_resp.variable));
2246
2247         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2248                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2249         os_memcpy(resp->da, addr, ETH_ALEN);
2250         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2251         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2252         resp->u.probe_resp.beacon_int = host_to_le16(100);
2253         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2254         resp->u.probe_resp.capab_info =
2255             host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2256                      WLAN_CAPABILITY_PRIVACY |
2257                      WLAN_CAPABILITY_SHORT_SLOT_TIME);
2258
2259         wpabuf_put_u8(buf, WLAN_EID_SSID);
2260         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2261         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2262
2263         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2264         wpabuf_put_u8(buf, 8);
2265         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2266         wpabuf_put_u8(buf, 90 / 5);
2267         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2268         wpabuf_put_u8(buf, 180 / 5);
2269         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2270         wpabuf_put_u8(buf, 360 / 5);
2271         wpabuf_put_u8(buf, 480 / 5);
2272         wpabuf_put_u8(buf, 540 / 5);
2273
2274         if (!rx_freq) {
2275                 channel = p2p->cfg->channel;
2276         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2277                 p2p_err(p2p, "Failed to convert freq to channel");
2278                 return -1;
2279         }
2280
2281         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2282         wpabuf_put_u8(buf, 1);
2283         wpabuf_put_u8(buf, channel);
2284
2285         wpabuf_put_buf(buf, ies);
2286
2287         return 0;
2288 }
2289
2290 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2291 {
2292         struct p2ps_advertisement *adv_data;
2293         int any_wfa;
2294
2295         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2296
2297         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2298         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2299
2300         adv_data = p2p->p2ps_adv_list;
2301         while (adv_data) {
2302                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2303                         return 1; /* exact hash match */
2304                 if (any_wfa &&
2305                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2306                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2307                         return 1; /* WFA service match */
2308                 adv_data = adv_data->next;
2309         }
2310
2311         return 0;
2312 }
2313
2314
2315 static enum p2p_probe_req_status
2316 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2317                 const u8 *bssid, const u8 *ie, size_t ie_len,
2318                 unsigned int rx_freq)
2319 {
2320         struct ieee802_11_elems elems;
2321         struct wpabuf *buf;
2322         struct p2p_message msg;
2323         struct wpabuf *ies;
2324
2325         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2326             ParseFailed) {
2327                 /* Ignore invalid Probe Request frames */
2328                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2329                 return P2P_PREQ_MALFORMED;
2330         }
2331
2332         if (elems.p2p == NULL) {
2333                 /* not a P2P probe - ignore it */
2334                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2335                 return P2P_PREQ_NOT_P2P;
2336         }
2337
2338         if (dst && !is_broadcast_ether_addr(dst) &&
2339             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340                 /* Not sent to the broadcast address or our P2P Device Address
2341                  */
2342                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2343                         MAC2STR(dst));
2344                 return P2P_PREQ_NOT_PROCESSED;
2345         }
2346
2347         if (bssid && !is_broadcast_ether_addr(bssid)) {
2348                 /* Not sent to the Wildcard BSSID */
2349                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2350                         MAC2STR(bssid));
2351                 return P2P_PREQ_NOT_PROCESSED;
2352         }
2353
2354         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2355             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2356             0) {
2357                 /* not using P2P Wildcard SSID - ignore */
2358                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2359                 return P2P_PREQ_NOT_PROCESSED;
2360         }
2361
2362         if (supp_rates_11b_only(&elems)) {
2363                 /* Indicates support for 11b rates only */
2364                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2365                 return P2P_PREQ_NOT_P2P;
2366         }
2367
2368         os_memset(&msg, 0, sizeof(msg));
2369         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2370                 /* Could not parse P2P attributes */
2371                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2372                 return P2P_PREQ_NOT_P2P;
2373         }
2374
2375         if (msg.service_hash && msg.service_hash_count) {
2376                 const u8 *hash = msg.service_hash;
2377                 u8 i;
2378                 int p2ps_svc_found = 0;
2379
2380                 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",
2381                         p2p->in_listen, p2p->drv_in_listen, rx_freq,
2382                         p2p->cfg->channel, p2p->pending_listen_freq);
2383
2384                 if (!p2p->in_listen && !p2p->drv_in_listen &&
2385                     p2p->pending_listen_freq && rx_freq &&
2386                     rx_freq != p2p->pending_listen_freq) {
2387                         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",
2388                                 rx_freq, p2p->pending_listen_freq);
2389                         p2p_parse_free(&msg);
2390                         return P2P_PREQ_NOT_LISTEN;
2391                 }
2392
2393                 for (i = 0; i < msg.service_hash_count; i++) {
2394                         if (p2p_service_find_asp(p2p, hash)) {
2395                                 p2p_dbg(p2p, "Service Hash match found: "
2396                                         MACSTR, MAC2STR(hash));
2397                                 p2ps_svc_found = 1;
2398                                 break;
2399                         }
2400                         hash += P2PS_HASH_LEN;
2401                 }
2402
2403                 /* Probed hash unknown */
2404                 if (!p2ps_svc_found) {
2405                         p2p_dbg(p2p, "No Service Hash match found");
2406                         p2p_parse_free(&msg);
2407                         return P2P_PREQ_NOT_PROCESSED;
2408                 }
2409         } else {
2410                 /* This is not a P2PS Probe Request */
2411                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2412
2413                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2414                         /* not in Listen state - ignore Probe Request */
2415                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2416                                 p2p->in_listen, p2p->drv_in_listen);
2417                         p2p_parse_free(&msg);
2418                         return P2P_PREQ_NOT_LISTEN;
2419                 }
2420         }
2421
2422         if (msg.device_id &&
2423             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2424                 /* Device ID did not match */
2425                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2426                         MAC2STR(msg.device_id));
2427                 p2p_parse_free(&msg);
2428                 return P2P_PREQ_NOT_PROCESSED;
2429         }
2430
2431         /* Check Requested Device Type match */
2432         if (msg.wps_attributes &&
2433             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2434                 /* No match with Requested Device Type */
2435                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2436                 p2p_parse_free(&msg);
2437                 return P2P_PREQ_NOT_PROCESSED;
2438         }
2439
2440         if (!p2p->cfg->send_probe_resp) {
2441                 /* Response generated elsewhere */
2442                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2443                 p2p_parse_free(&msg);
2444                 return P2P_PREQ_NOT_PROCESSED;
2445         }
2446
2447         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2448
2449         /*
2450          * We do not really have a specific BSS that this frame is advertising,
2451          * so build a frame that has some information in valid format. This is
2452          * really only used for discovery purposes, not to learn exact BSS
2453          * parameters.
2454          */
2455         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2456                                        msg.service_hash_count);
2457         p2p_parse_free(&msg);
2458         if (ies == NULL)
2459                 return P2P_PREQ_NOT_PROCESSED;
2460
2461         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2462         if (buf == NULL) {
2463                 wpabuf_free(ies);
2464                 return P2P_PREQ_NOT_PROCESSED;
2465         }
2466
2467         if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2468                 wpabuf_free(ies);
2469                 wpabuf_free(buf);
2470                 return P2P_PREQ_NOT_PROCESSED;
2471         }
2472
2473         wpabuf_free(ies);
2474
2475         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2476
2477         wpabuf_free(buf);
2478
2479         return P2P_PREQ_PROCESSED;
2480 }
2481
2482
2483 enum p2p_probe_req_status
2484 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2485                  const u8 *bssid, const u8 *ie, size_t ie_len,
2486                  unsigned int rx_freq, int p2p_lo_started)
2487 {
2488         enum p2p_probe_req_status res;
2489
2490         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2491
2492         if (p2p_lo_started) {
2493                 p2p_dbg(p2p,
2494                         "Probe Response is offloaded, do not reply Probe Request");
2495                 return P2P_PREQ_PROCESSED;
2496         }
2497
2498         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2499         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2500                 return res;
2501
2502         /*
2503          * Activate a pending GO Negotiation/Invite flow if a received Probe
2504          * Request frame is from an expected peer. Some devices may share the
2505          * same address for P2P and non-P2P STA running simultaneously. The
2506          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2507          * return values verified above ensure we are handling a Probe Request
2508          * frame from a P2P peer.
2509          */
2510         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2511             p2p->go_neg_peer &&
2512             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2513             == 0 &&
2514             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2515                 /* Received a Probe Request from GO Negotiation peer */
2516                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2517                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2518                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2519                 return res;
2520         }
2521
2522         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2523             p2p->invite_peer &&
2524             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2525             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2526             == 0) {
2527                 /* Received a Probe Request from Invite peer */
2528                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2529                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2530                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2531                 return res;
2532         }
2533
2534         return res;
2535 }
2536
2537
2538 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2539                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2540 {
2541         struct wpabuf *tmp;
2542         u8 *lpos;
2543         size_t tmplen;
2544         int res;
2545         u8 group_capab;
2546         struct p2p_message msg;
2547
2548         if (p2p_ie == NULL)
2549                 return 0; /* WLAN AP is not a P2P manager */
2550
2551         os_memset(&msg, 0, sizeof(msg));
2552         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2553                 return 0;
2554
2555         p2p_dbg(p2p, "BSS P2P manageability %s",
2556                 msg.manageability ? "enabled" : "disabled");
2557
2558         if (!msg.manageability)
2559                 return 0;
2560
2561         /*
2562          * (Re)Association Request - P2P IE
2563          * P2P Capability attribute (shall be present)
2564          * P2P Interface attribute (present if concurrent device and
2565          *      P2P Management is enabled)
2566          */
2567         tmp = wpabuf_alloc(200);
2568         if (tmp == NULL)
2569                 return -1;
2570
2571         lpos = p2p_buf_add_ie_hdr(tmp);
2572         group_capab = 0;
2573         if (p2p->num_groups > 0) {
2574                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2575                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2576                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2577                     p2p->cross_connect)
2578                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2579         }
2580         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2581         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2582             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2583                 p2p_buf_add_p2p_interface(tmp, p2p);
2584         p2p_buf_update_ie_hdr(tmp, lpos);
2585
2586         tmplen = wpabuf_len(tmp);
2587         if (tmplen > len)
2588                 res = -1;
2589         else {
2590                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2591                 res = tmplen;
2592         }
2593         wpabuf_free(tmp);
2594
2595         return res;
2596 }
2597
2598
2599 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2600                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2601 {
2602         struct wpabuf *tmp;
2603         u8 *lpos;
2604         struct p2p_device *peer;
2605         size_t tmplen;
2606         int res;
2607         size_t extra = 0;
2608
2609         if (!p2p_group)
2610                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2611
2612 #ifdef CONFIG_WIFI_DISPLAY
2613         if (p2p->wfd_ie_assoc_req)
2614                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2615 #endif /* CONFIG_WIFI_DISPLAY */
2616
2617         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2618                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2619
2620         /*
2621          * (Re)Association Request - P2P IE
2622          * P2P Capability attribute (shall be present)
2623          * Extended Listen Timing (may be present)
2624          * P2P Device Info attribute (shall be present)
2625          */
2626         tmp = wpabuf_alloc(200 + extra);
2627         if (tmp == NULL)
2628                 return -1;
2629
2630 #ifdef CONFIG_WIFI_DISPLAY
2631         if (p2p->wfd_ie_assoc_req)
2632                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2633 #endif /* CONFIG_WIFI_DISPLAY */
2634
2635         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2636                 wpabuf_put_buf(tmp,
2637                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2638
2639         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2640
2641         lpos = p2p_buf_add_ie_hdr(tmp);
2642         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2643         if (p2p->ext_listen_interval)
2644                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2645                                               p2p->ext_listen_interval);
2646         p2p_buf_add_device_info(tmp, p2p, peer);
2647         p2p_buf_update_ie_hdr(tmp, lpos);
2648
2649         tmplen = wpabuf_len(tmp);
2650         if (tmplen > len)
2651                 res = -1;
2652         else {
2653                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2654                 res = tmplen;
2655         }
2656         wpabuf_free(tmp);
2657
2658         return res;
2659 }
2660
2661
2662 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2663 {
2664         struct wpabuf *p2p_ie;
2665         int ret;
2666
2667         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2668         if (p2p_ie == NULL)
2669                 return 0;
2670
2671         ret = p2p_attr_text(p2p_ie, buf, end);
2672         wpabuf_free(p2p_ie);
2673         return ret;
2674 }
2675
2676
2677 struct p2ps_advertisement *
2678 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2679 {
2680         struct p2ps_advertisement *adv_data;
2681
2682         if (!p2p)
2683                 return NULL;
2684
2685         adv_data = p2p->p2ps_adv_list;
2686         while (adv_data) {
2687                 if (adv_data->id == adv_id)
2688                         return adv_data;
2689                 adv_data = adv_data->next;
2690         }
2691
2692         return NULL;
2693 }
2694
2695
2696 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2697 {
2698         struct p2ps_advertisement *adv_data;
2699         struct p2ps_advertisement **prior;
2700
2701         if (!p2p)
2702                 return -1;
2703
2704         adv_data = p2p->p2ps_adv_list;
2705         prior = &p2p->p2ps_adv_list;
2706         while (adv_data) {
2707                 if (adv_data->id == adv_id) {
2708                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2709                         *prior = adv_data->next;
2710                         os_free(adv_data);
2711                         return 0;
2712                 }
2713                 prior = &adv_data->next;
2714                 adv_data = adv_data->next;
2715         }
2716
2717         return -1;
2718 }
2719
2720
2721 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2722                         const char *adv_str, u8 svc_state, u16 config_methods,
2723                         const char *svc_info, const u8 *cpt_priority)
2724 {
2725         struct p2ps_advertisement *adv_data, *tmp, **prev;
2726         u8 buf[P2PS_HASH_LEN];
2727         size_t adv_data_len, adv_len, info_len = 0;
2728         int i;
2729
2730         if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2731                 return -1;
2732
2733         if (!(config_methods & p2p->cfg->config_methods)) {
2734                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2735                         config_methods, p2p->cfg->config_methods);
2736                 return -1;
2737         }
2738
2739         if (!p2ps_gen_hash(p2p, adv_str, buf))
2740                 return -1;
2741
2742         if (svc_info)
2743                 info_len = os_strlen(svc_info);
2744         adv_len = os_strlen(adv_str);
2745         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2746                 info_len + 1;
2747
2748         adv_data = os_zalloc(adv_data_len);
2749         if (!adv_data)
2750                 return -1;
2751
2752         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2753         adv_data->id = adv_id;
2754         adv_data->state = svc_state;
2755         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2756         adv_data->auto_accept = (u8) auto_accept;
2757         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2758
2759         for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2760                 adv_data->cpt_priority[i] = cpt_priority[i];
2761                 adv_data->cpt_mask |= cpt_priority[i];
2762         }
2763
2764         if (svc_info && info_len) {
2765                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2766                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2767         }
2768
2769         /*
2770          * Group Advertisements by service string. They do not need to be
2771          * sorted, but groups allow easier Probe Response instance grouping
2772          */
2773         tmp = p2p->p2ps_adv_list;
2774         prev = &p2p->p2ps_adv_list;
2775         while (tmp) {
2776                 if (tmp->id == adv_data->id) {
2777                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2778                                 os_free(adv_data);
2779                                 return -1;
2780                         }
2781                         adv_data->next = tmp->next;
2782                         *prev = adv_data;
2783                         os_free(tmp);
2784                         goto inserted;
2785                 } else {
2786                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2787                                 adv_data->next = tmp->next;
2788                                 tmp->next = adv_data;
2789                                 goto inserted;
2790                         }
2791                 }
2792                 prev = &tmp->next;
2793                 tmp = tmp->next;
2794         }
2795
2796         /* No svc_name match found */
2797         adv_data->next = p2p->p2ps_adv_list;
2798         p2p->p2ps_adv_list = adv_data;
2799
2800 inserted:
2801         p2p_dbg(p2p,
2802                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2803                 adv_id, adv_data->config_methods, svc_state, adv_str,
2804                 adv_data->cpt_mask);
2805
2806         return 0;
2807 }
2808
2809
2810 void p2p_service_flush_asp(struct p2p_data *p2p)
2811 {
2812         struct p2ps_advertisement *adv, *prev;
2813
2814         if (!p2p)
2815                 return;
2816
2817         adv = p2p->p2ps_adv_list;
2818         while (adv) {
2819                 prev = adv;
2820                 adv = adv->next;
2821                 os_free(prev);
2822         }
2823
2824         p2p->p2ps_adv_list = NULL;
2825         p2p_dbg(p2p, "All ASP advertisements flushed");
2826 }
2827
2828
2829 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2830 {
2831         struct p2p_message msg;
2832
2833         os_memset(&msg, 0, sizeof(msg));
2834         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2835                 return -1;
2836
2837         if (msg.p2p_device_addr) {
2838                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2839                 return 0;
2840         } else if (msg.device_id) {
2841                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2842                 return 0;
2843         }
2844         return -1;
2845 }
2846
2847
2848 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2849 {
2850         struct wpabuf *p2p_ie;
2851         int ret;
2852
2853         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2854                                              P2P_IE_VENDOR_TYPE);
2855         if (p2p_ie == NULL)
2856                 return -1;
2857         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2858         wpabuf_free(p2p_ie);
2859         return ret;
2860 }
2861
2862
2863 static void p2p_clear_go_neg(struct p2p_data *p2p)
2864 {
2865         p2p->go_neg_peer = NULL;
2866         p2p_clear_timeout(p2p);
2867         p2p_set_state(p2p, P2P_IDLE);
2868 }
2869
2870
2871 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2872 {
2873         if (p2p->go_neg_peer == NULL) {
2874                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2875                 return; /* No pending Group Formation */
2876         }
2877
2878         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2879             0) {
2880                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2881                         MACSTR " (GO Negotiation peer " MACSTR ")",
2882                         MAC2STR(mac_addr),
2883                         MAC2STR(p2p->go_neg_peer->intended_addr));
2884                 return; /* Ignore unexpected peer address */
2885         }
2886
2887         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2888                 MAC2STR(mac_addr));
2889
2890         p2p_clear_go_neg(p2p);
2891 }
2892
2893
2894 void p2p_group_formation_failed(struct p2p_data *p2p)
2895 {
2896         if (p2p->go_neg_peer == NULL) {
2897                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2898                 return; /* No pending Group Formation */
2899         }
2900
2901         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2902                 MAC2STR(p2p->go_neg_peer->intended_addr));
2903
2904         p2p_clear_go_neg(p2p);
2905 }
2906
2907
2908 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2909 {
2910         struct p2p_data *p2p;
2911
2912         if (cfg->max_peers < 1 ||
2913             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2914                 return NULL;
2915
2916         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2917         if (p2p == NULL)
2918                 return NULL;
2919         p2p->cfg = (struct p2p_config *) (p2p + 1);
2920         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2921         if (cfg->dev_name)
2922                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2923         if (cfg->manufacturer)
2924                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2925         if (cfg->model_name)
2926                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2927         if (cfg->model_number)
2928                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2929         if (cfg->serial_number)
2930                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2931         if (cfg->pref_chan) {
2932                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2933                                                 sizeof(struct p2p_channel));
2934                 if (p2p->cfg->pref_chan) {
2935                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2936                                   cfg->num_pref_chan *
2937                                   sizeof(struct p2p_channel));
2938                 } else
2939                         p2p->cfg->num_pref_chan = 0;
2940         }
2941
2942         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2943
2944         p2p->min_disc_int = 1;
2945         p2p->max_disc_int = 3;
2946         p2p->max_disc_tu = -1;
2947
2948         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2949                 p2p->next_tie_breaker = 0;
2950         p2p->next_tie_breaker &= 0x01;
2951         if (cfg->sd_request)
2952                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2953         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2954         if (cfg->concurrent_operations)
2955                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2956         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2957
2958         dl_list_init(&p2p->devices);
2959
2960         p2p->go_timeout = 100;
2961         p2p->client_timeout = 20;
2962         p2p->num_p2p_sd_queries = 0;
2963
2964         p2p_dbg(p2p, "initialized");
2965         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2966         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2967
2968         return p2p;
2969 }
2970
2971
2972 void p2p_deinit(struct p2p_data *p2p)
2973 {
2974 #ifdef CONFIG_WIFI_DISPLAY
2975         wpabuf_free(p2p->wfd_ie_beacon);
2976         wpabuf_free(p2p->wfd_ie_probe_req);
2977         wpabuf_free(p2p->wfd_ie_probe_resp);
2978         wpabuf_free(p2p->wfd_ie_assoc_req);
2979         wpabuf_free(p2p->wfd_ie_invitation);
2980         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2981         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2982         wpabuf_free(p2p->wfd_ie_go_neg);
2983         wpabuf_free(p2p->wfd_dev_info);
2984         wpabuf_free(p2p->wfd_assoc_bssid);
2985         wpabuf_free(p2p->wfd_coupled_sink_info);
2986 #endif /* CONFIG_WIFI_DISPLAY */
2987
2988         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2989         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2990         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2991         p2p_flush(p2p);
2992         p2p_free_req_dev_types(p2p);
2993         os_free(p2p->cfg->dev_name);
2994         os_free(p2p->cfg->manufacturer);
2995         os_free(p2p->cfg->model_name);
2996         os_free(p2p->cfg->model_number);
2997         os_free(p2p->cfg->serial_number);
2998         os_free(p2p->cfg->pref_chan);
2999         os_free(p2p->groups);
3000         p2ps_prov_free(p2p);
3001         wpabuf_free(p2p->sd_resp);
3002         p2p_remove_wps_vendor_extensions(p2p);
3003         os_free(p2p->no_go_freq.range);
3004         p2p_service_flush_asp(p2p);
3005
3006         os_free(p2p);
3007 }
3008
3009
3010 void p2p_flush(struct p2p_data *p2p)
3011 {
3012         struct p2p_device *dev, *prev;
3013
3014         p2p_ext_listen(p2p, 0, 0);
3015         p2p_stop_find(p2p);
3016         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3017                               list) {
3018                 dl_list_del(&dev->list);
3019                 p2p_device_free(p2p, dev);
3020         }
3021         p2p_free_sd_queries(p2p);
3022         os_free(p2p->after_scan_tx);
3023         p2p->after_scan_tx = NULL;
3024         p2p->ssid_set = 0;
3025 }
3026
3027
3028 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3029 {
3030         struct p2p_device *dev;
3031
3032         dev = p2p_get_device(p2p, addr);
3033         if (dev == NULL)
3034                 return -1;
3035
3036         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3037
3038         if (p2p->go_neg_peer == dev) {
3039                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3040                 p2p->go_neg_peer = NULL;
3041         }
3042
3043         dev->wps_method = WPS_NOT_READY;
3044         dev->oob_pw_id = 0;
3045         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3046         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3047
3048         /* Check if after_scan_tx is for this peer. If so free it */
3049         if (p2p->after_scan_tx &&
3050             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3051                 os_free(p2p->after_scan_tx);
3052                 p2p->after_scan_tx = NULL;
3053         }
3054
3055         return 0;
3056 }
3057
3058
3059 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3060 {
3061         os_free(p2p->cfg->dev_name);
3062         if (dev_name) {
3063                 p2p->cfg->dev_name = os_strdup(dev_name);
3064                 if (p2p->cfg->dev_name == NULL)
3065                         return -1;
3066         } else
3067                 p2p->cfg->dev_name = NULL;
3068         return 0;
3069 }
3070
3071
3072 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3073 {
3074         os_free(p2p->cfg->manufacturer);
3075         p2p->cfg->manufacturer = NULL;
3076         if (manufacturer) {
3077                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3078                 if (p2p->cfg->manufacturer == NULL)
3079                         return -1;
3080         }
3081
3082         return 0;
3083 }
3084
3085
3086 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3087 {
3088         os_free(p2p->cfg->model_name);
3089         p2p->cfg->model_name = NULL;
3090         if (model_name) {
3091                 p2p->cfg->model_name = os_strdup(model_name);
3092                 if (p2p->cfg->model_name == NULL)
3093                         return -1;
3094         }
3095
3096         return 0;
3097 }
3098
3099
3100 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3101 {
3102         os_free(p2p->cfg->model_number);
3103         p2p->cfg->model_number = NULL;
3104         if (model_number) {
3105                 p2p->cfg->model_number = os_strdup(model_number);
3106                 if (p2p->cfg->model_number == NULL)
3107                         return -1;
3108         }
3109
3110         return 0;
3111 }
3112
3113
3114 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3115 {
3116         os_free(p2p->cfg->serial_number);
3117         p2p->cfg->serial_number = NULL;
3118         if (serial_number) {
3119                 p2p->cfg->serial_number = os_strdup(serial_number);
3120                 if (p2p->cfg->serial_number == NULL)
3121                         return -1;
3122         }
3123
3124         return 0;
3125 }
3126
3127
3128 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3129 {
3130         p2p->cfg->config_methods = config_methods;
3131 }
3132
3133
3134 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3135 {
3136         os_memcpy(p2p->cfg->uuid, uuid, 16);
3137 }
3138
3139
3140 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3141 {
3142         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3143         return 0;
3144 }
3145
3146
3147 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3148                           size_t num_dev_types)
3149 {
3150         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3151                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3152         p2p->cfg->num_sec_dev_types = num_dev_types;
3153         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3154         return 0;
3155 }
3156
3157
3158 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3159 {
3160         int i;
3161
3162         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3163                 wpabuf_free(p2p->wps_vendor_ext[i]);
3164                 p2p->wps_vendor_ext[i] = NULL;
3165         }
3166 }
3167
3168
3169 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3170                                  const struct wpabuf *vendor_ext)
3171 {
3172         int i;
3173
3174         if (vendor_ext == NULL)
3175                 return -1;
3176
3177         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3178                 if (p2p->wps_vendor_ext[i] == NULL)
3179                         break;
3180         }
3181         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3182                 return -1;
3183
3184         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3185         if (p2p->wps_vendor_ext[i] == NULL)
3186                 return -1;
3187
3188         return 0;
3189 }
3190
3191
3192 int p2p_set_country(struct p2p_data *p2p, const char *country)
3193 {
3194         os_memcpy(p2p->cfg->country, country, 3);
3195         return 0;
3196 }
3197
3198
3199 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3200 {
3201         int res;
3202
3203         if (dev->sd_pending_bcast_queries == 0) {
3204                 /* Initialize with total number of registered broadcast
3205                  * SD queries. */
3206                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3207         }
3208
3209         res = p2p_start_sd(p2p, dev);
3210         if (res == -2)
3211                 return -2;
3212         if (res == 0)
3213                 return 1;
3214
3215         if (dev->req_config_methods &&
3216             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3217                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3218                         MACSTR " (config methods 0x%x)",
3219                         MAC2STR(dev->info.p2p_device_addr),
3220                         dev->req_config_methods);
3221                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3222                         return 1;
3223         }
3224
3225         return 0;
3226 }
3227
3228
3229 void p2p_continue_find(struct p2p_data *p2p)
3230 {
3231         struct p2p_device *dev;
3232         int found, res;
3233
3234         p2p_set_state(p2p, P2P_SEARCH);
3235
3236         /* Continue from the device following the last iteration */
3237         found = 0;
3238         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3239                 if (dev == p2p->last_p2p_find_oper) {
3240                         found = 1;
3241                         continue;
3242                 }
3243                 if (!found)
3244                         continue;
3245                 res = p2p_pre_find_operation(p2p, dev);
3246                 if (res > 0) {
3247                         p2p->last_p2p_find_oper = dev;
3248                         return;
3249                 }
3250                 if (res == -2)
3251                         goto skip_sd;
3252         }
3253
3254         /*
3255          * Wrap around to the beginning of the list and continue until the last
3256          * iteration device.
3257          */
3258         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3259                 res = p2p_pre_find_operation(p2p, dev);
3260                 if (res > 0) {
3261                         p2p->last_p2p_find_oper = dev;
3262                         return;
3263                 }
3264                 if (res == -2)
3265                         goto skip_sd;
3266                 if (dev == p2p->last_p2p_find_oper)
3267                         break;
3268         }
3269
3270 skip_sd:
3271         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3272         p2p_listen_in_find(p2p, 1);
3273 }
3274
3275
3276 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3277 {
3278         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3279                 success);
3280         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3281
3282         if (!success) {
3283                 if (p2p->sd_peer) {
3284                         if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3285                                 os_memcpy(p2p->sd_query_no_ack,
3286                                           p2p->sd_peer->info.p2p_device_addr,
3287                                           ETH_ALEN);
3288                                 p2p_dbg(p2p,
3289                                         "First SD Query no-ACK in this search iteration: "
3290                                         MACSTR, MAC2STR(p2p->sd_query_no_ack));
3291                         }
3292                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3293                 }
3294                 p2p->sd_peer = NULL;
3295                 if (p2p->state != P2P_IDLE)
3296                         p2p_continue_find(p2p);
3297                 return;
3298         }
3299
3300         if (p2p->sd_peer == NULL) {
3301                 p2p_dbg(p2p, "No SD peer entry known");
3302                 if (p2p->state != P2P_IDLE)
3303                         p2p_continue_find(p2p);
3304                 return;
3305         }
3306
3307         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3308                 /* Update the pending broadcast SD query count for this device
3309                  */
3310                 p2p->sd_peer->sd_pending_bcast_queries--;
3311
3312                 /*
3313                  * If there are no pending broadcast queries for this device,
3314                  * mark it as done (-1).
3315                  */
3316                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3317                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3318         }
3319
3320         /* Wait for response from the peer */
3321         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3322         p2p_set_timeout(p2p, 0, 200000);
3323 }
3324
3325
3326 /**
3327  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3328  * @p2p: P2P module context from p2p_init()
3329  */
3330 static void p2p_retry_pd(struct p2p_data *p2p)
3331 {
3332         struct p2p_device *dev;
3333
3334         /*
3335          * Retry the prov disc req attempt only for the peer that the user had
3336          * requested.
3337          */
3338
3339         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3340                 if (os_memcmp(p2p->pending_pd_devaddr,
3341                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3342                         continue;
3343                 if (!dev->req_config_methods)
3344                         continue;
3345
3346                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3347                         MACSTR " (config methods 0x%x)",
3348                         MAC2STR(dev->info.p2p_device_addr),
3349                         dev->req_config_methods);
3350                 p2p_send_prov_disc_req(p2p, dev,
3351                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3352                                        p2p->pd_force_freq);
3353                 return;
3354         }
3355 }
3356
3357
3358 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3359 {
3360         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3361                 success);
3362
3363         /*
3364          * Postpone resetting the pending action state till after we actually
3365          * time out. This allows us to take some action like notifying any
3366          * interested parties about no response to the request.
3367          *
3368          * When the timer (below) goes off we check in IDLE, SEARCH, or
3369          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3370          * requests in, if this was still pending and then raise notification.
3371          */
3372
3373         if (!success) {
3374                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3375
3376                 if (p2p->user_initiated_pd &&
3377                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3378                 {
3379                         /* Retry request from timeout to avoid busy loops */
3380                         p2p->pending_action_state = P2P_PENDING_PD;
3381                         p2p_set_timeout(p2p, 0, 50000);
3382                 } else if (p2p->state != P2P_IDLE)
3383                         p2p_continue_find(p2p);
3384                 else if (p2p->user_initiated_pd) {
3385                         p2p->pending_action_state = P2P_PENDING_PD;
3386                         p2p_set_timeout(p2p, 0, 300000);
3387                 }
3388                 return;
3389         }
3390
3391         /*
3392          * If after PD Request the peer doesn't expect to receive PD Response
3393          * the PD Request ACK indicates a completion of the current PD. This
3394          * happens only on the advertiser side sending the follow-on PD Request
3395          * with the status different than 12 (Success: accepted by user).
3396          */
3397         if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3398             p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3399                 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3400
3401                 if (p2p->send_action_in_progress) {
3402                         p2p->send_action_in_progress = 0;
3403                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3404                 }
3405
3406                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3407
3408                 if (p2p->cfg->p2ps_prov_complete) {
3409                         p2p->cfg->p2ps_prov_complete(
3410                                 p2p->cfg->cb_ctx,
3411                                 p2p->p2ps_prov->status,
3412                                 p2p->p2ps_prov->adv_mac,
3413                                 p2p->p2ps_prov->adv_mac,
3414                                 p2p->p2ps_prov->session_mac,
3415                                 NULL, p2p->p2ps_prov->adv_id,
3416                                 p2p->p2ps_prov->session_id,
3417                                 0, 0, NULL, 0, 0, 0,
3418                                 NULL, NULL, 0, 0, NULL, 0);
3419                 }
3420
3421                 if (p2p->user_initiated_pd)
3422                         p2p_reset_pending_pd(p2p);
3423
3424                 p2ps_prov_free(p2p);
3425                 return;
3426         }
3427
3428         /*
3429          * This postponing, of resetting pending_action_state, needs to be
3430          * done only for user initiated PD requests and not internal ones.
3431          */
3432         if (p2p->user_initiated_pd)
3433                 p2p->pending_action_state = P2P_PENDING_PD;
3434         else
3435                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3436
3437         /* Wait for response from the peer */
3438         if (p2p->state == P2P_SEARCH)
3439                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3440         p2p_set_timeout(p2p, 0, 200000);
3441 }
3442
3443
3444 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3445 {
3446         if (p2p->after_scan_tx_in_progress) {
3447                 p2p->after_scan_tx_in_progress = 0;
3448                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3449                     p2p_run_after_scan(p2p))
3450                         return 1;
3451                 if (p2p->state == P2P_SEARCH) {
3452                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3453                         p2p_continue_find(p2p);
3454                 }
3455         }
3456
3457         return 0;
3458 }
3459
3460
3461 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3462 {
3463         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3464                 success);
3465
3466         if (p2p->send_action_in_progress) {
3467                 p2p->send_action_in_progress = 0;
3468                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3469         }
3470
3471         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3472
3473         if (!success)
3474                 goto continue_search;
3475
3476         if (!p2p->cfg->prov_disc_resp_cb ||
3477             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3478                 goto continue_search;
3479
3480         p2p_dbg(p2p,
3481                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3482         return;
3483
3484 continue_search:
3485         p2p_check_after_scan_tx_continuation(p2p);
3486 }
3487
3488
3489 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3490                          struct os_reltime *rx_time, int level, const u8 *ies,
3491                          size_t ies_len)
3492 {
3493         if (os_reltime_before(rx_time, &p2p->find_start)) {
3494                 /*
3495                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3496                  * scan results for relatively long time. To avoid reporting
3497                  * stale information, update P2P peers only based on results
3498                  * that have based on frames received after the last p2p_find
3499                  * operation was started.
3500                  */
3501                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3502                         " (rx_time=%u.%06u find_start=%u.%06u)",
3503                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3504                         (unsigned int) rx_time->usec,
3505                         (unsigned int) p2p->find_start.sec,
3506                         (unsigned int) p2p->find_start.usec);
3507                 return 0;
3508         }
3509
3510         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3511
3512         return 0;
3513 }
3514
3515
3516 void p2p_scan_res_handled(struct p2p_data *p2p)
3517 {
3518         if (!p2p->p2p_scan_running) {
3519                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3520         }
3521         p2p->p2p_scan_running = 0;
3522         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3523
3524         if (p2p_run_after_scan(p2p))
3525                 return;
3526         if (p2p->state == P2P_SEARCH)
3527                 p2p_continue_find(p2p);
3528 }
3529
3530
3531 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3532                  unsigned int bands)
3533 {
3534         u8 dev_capab;
3535         u8 *len;
3536
3537 #ifdef CONFIG_WIFI_DISPLAY
3538         if (p2p->wfd_ie_probe_req)
3539                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3540 #endif /* CONFIG_WIFI_DISPLAY */
3541
3542         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3543                 wpabuf_put_buf(ies,
3544                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3545
3546         len = p2p_buf_add_ie_hdr(ies);
3547
3548         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3549
3550         /* P2PS requires Probe Request frames to include SD bit */
3551         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3552                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3553
3554         p2p_buf_add_capability(ies, dev_capab, 0);
3555
3556         if (dev_id)
3557                 p2p_buf_add_device_id(ies, dev_id);
3558         if (p2p->cfg->reg_class && p2p->cfg->channel)
3559                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3560                                            p2p->cfg->reg_class,
3561                                            p2p->cfg->channel);
3562         if (p2p->ext_listen_interval)
3563                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3564                                               p2p->ext_listen_interval);
3565
3566         if (bands & BAND_60_GHZ)
3567                 p2p_buf_add_device_info(ies, p2p, NULL);
3568
3569         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3570                 p2p_buf_add_service_hash(ies, p2p);
3571
3572         /* TODO: p2p_buf_add_operating_channel() if GO */
3573         p2p_buf_update_ie_hdr(ies, len);
3574 }
3575
3576
3577 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3578 {
3579         size_t len = 100;
3580
3581 #ifdef CONFIG_WIFI_DISPLAY
3582         if (p2p && p2p->wfd_ie_probe_req)
3583                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3584 #endif /* CONFIG_WIFI_DISPLAY */
3585
3586         if (p2p && p2p->vendor_elem &&
3587             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3588                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3589
3590         return len;
3591 }
3592
3593
3594 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3595 {
3596         return p2p_attr_text(p2p_ie, buf, end);
3597 }
3598
3599
3600 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3601 {
3602         struct p2p_device *dev = p2p->go_neg_peer;
3603         int timeout;
3604
3605         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3606
3607         if (dev == NULL) {
3608                 p2p_dbg(p2p, "No pending GO Negotiation");
3609                 return;
3610         }
3611
3612         if (success) {
3613                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3614                         p2p_set_state(p2p, P2P_IDLE);
3615                         return;
3616                 }
3617         } else if (dev->go_neg_req_sent) {
3618                 /* Cancel the increment from p2p_connect_send() on failure */
3619                 dev->go_neg_req_sent--;
3620         }
3621
3622         if (!success &&
3623             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3624             !is_zero_ether_addr(dev->member_in_go_dev)) {
3625                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3626                         MAC2STR(dev->info.p2p_device_addr));
3627                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3628                 p2p_send_dev_disc_req(p2p, dev);
3629                 return;
3630         }
3631
3632         /*
3633          * Use P2P find, if needed, to find the other device from its listen
3634          * channel.
3635          */
3636         p2p_set_state(p2p, P2P_CONNECT);
3637         timeout = success ? 500000 : 100000;
3638         if (!success && p2p->go_neg_peer &&
3639             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3640                 unsigned int r;
3641                 /*
3642                  * Peer is expected to wait our response and we will skip the
3643                  * listen phase. Add some randomness to the wait time here to
3644                  * make it less likely to hit cases where we could end up in
3645                  * sync with peer not listening.
3646                  */
3647                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3648                         r = 0;
3649                 timeout += r % 100000;
3650         }
3651         p2p_set_timeout(p2p, 0, timeout);
3652 }
3653
3654
3655 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3656 {
3657         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3658                 success);
3659         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3660                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3661                 return;
3662         }
3663         p2p_set_state(p2p, P2P_CONNECT);
3664         p2p_set_timeout(p2p, 0, 500000);
3665 }
3666
3667
3668 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3669                                        const u8 *addr)
3670 {
3671         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3672         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3673                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3674                 return;
3675         }
3676
3677         if (success) {
3678                 struct p2p_device *dev;
3679                 dev = p2p_get_device(p2p, addr);
3680                 if (dev &&
3681                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3682                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3683         }
3684
3685         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3686                 p2p_continue_find(p2p);
3687 }
3688
3689
3690 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3691                                enum p2p_send_action_result result)
3692 {
3693         struct p2p_device *dev;
3694
3695         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3696         if (result == P2P_SEND_ACTION_FAILED) {
3697                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3698                 p2p_go_neg_failed(p2p, -1);
3699                 return;
3700         }
3701
3702         dev = p2p->go_neg_peer;
3703
3704         if (result == P2P_SEND_ACTION_NO_ACK) {
3705                 /*
3706                  * Retry GO Negotiation Confirmation
3707                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3708                  * ACK for confirmation.
3709                  */
3710                 if (dev && dev->go_neg_conf &&
3711                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3712                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3713                                 dev->go_neg_conf_sent);
3714                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3715                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3716                                             dev->info.p2p_device_addr,
3717                                             p2p->cfg->dev_addr,
3718                                             dev->info.p2p_device_addr,
3719                                             wpabuf_head(dev->go_neg_conf),
3720                                             wpabuf_len(dev->go_neg_conf), 0) >=
3721                             0) {
3722                                 dev->go_neg_conf_sent++;
3723                                 return;
3724                         }
3725                         p2p_dbg(p2p, "Failed to re-send Action frame");
3726
3727                         /*
3728                          * Continue with the assumption that the first attempt
3729                          * went through and just the ACK frame was lost.
3730                          */
3731                 }
3732
3733                 /*
3734                  * It looks like the TX status for GO Negotiation Confirm is
3735                  * often showing failure even when the peer has actually
3736                  * received the frame. Since the peer may change channels
3737                  * immediately after having received the frame, we may not see
3738                  * an Ack for retries, so just dropping a single frame may
3739                  * trigger this. To allow the group formation to succeed if the
3740                  * peer did indeed receive the frame, continue regardless of
3741                  * the TX status.
3742                  */
3743                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3744         }
3745
3746         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3747
3748         if (dev == NULL)
3749                 return;
3750
3751         p2p_go_complete(p2p, dev);
3752 }
3753
3754
3755 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3756                         const u8 *src, const u8 *bssid,
3757                         enum p2p_send_action_result result)
3758 {
3759         enum p2p_pending_action_state state;
3760         int success;
3761
3762         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3763                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3764                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3765                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3766         success = result == P2P_SEND_ACTION_SUCCESS;
3767         state = p2p->pending_action_state;
3768         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3769         switch (state) {
3770         case P2P_NO_PENDING_ACTION:
3771                 if (p2p->send_action_in_progress) {
3772                         p2p->send_action_in_progress = 0;
3773                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3774                 }
3775                 p2p_check_after_scan_tx_continuation(p2p);
3776                 break;
3777         case P2P_PENDING_GO_NEG_REQUEST:
3778                 p2p_go_neg_req_cb(p2p, success);
3779                 break;
3780         case P2P_PENDING_GO_NEG_RESPONSE:
3781                 p2p_go_neg_resp_cb(p2p, success);
3782                 break;
3783         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3784                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3785                 break;
3786         case P2P_PENDING_GO_NEG_CONFIRM:
3787                 p2p_go_neg_conf_cb(p2p, result);
3788                 break;
3789         case P2P_PENDING_SD:
3790                 p2p_sd_cb(p2p, success);
3791                 break;
3792         case P2P_PENDING_PD:
3793                 p2p_prov_disc_cb(p2p, success);
3794                 break;
3795         case P2P_PENDING_PD_RESPONSE:
3796                 p2p_prov_disc_resp_cb(p2p, success);
3797                 break;
3798         case P2P_PENDING_INVITATION_REQUEST:
3799                 p2p_invitation_req_cb(p2p, success);
3800                 break;
3801         case P2P_PENDING_INVITATION_RESPONSE:
3802                 p2p_invitation_resp_cb(p2p, success);
3803                 if (p2p->inv_status != P2P_SC_SUCCESS)
3804                         p2p_check_after_scan_tx_continuation(p2p);
3805                 break;
3806         case P2P_PENDING_DEV_DISC_REQUEST:
3807                 p2p_dev_disc_req_cb(p2p, success);
3808                 break;
3809         case P2P_PENDING_DEV_DISC_RESPONSE:
3810                 p2p_dev_disc_resp_cb(p2p, success);
3811                 break;
3812         case P2P_PENDING_GO_DISC_REQ:
3813                 p2p_go_disc_req_cb(p2p, success);
3814                 break;
3815         }
3816
3817         p2p->after_scan_tx_in_progress = 0;
3818 }
3819
3820
3821 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3822                    unsigned int duration)
3823 {
3824         if (freq == p2p->pending_client_disc_freq) {
3825                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3826                 p2p->pending_client_disc_freq = 0;
3827                 return;
3828         }
3829
3830         if (freq != p2p->pending_listen_freq) {
3831                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3832                         freq, duration, p2p->pending_listen_freq);
3833                 return;
3834         }
3835
3836         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3837                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3838                 p2p->pending_listen_freq);
3839         p2p->in_listen = 1;
3840         p2p->drv_in_listen = freq;
3841         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3842                 /*
3843                  * Add 20 msec extra wait to avoid race condition with driver
3844                  * remain-on-channel end event, i.e., give driver more time to
3845                  * complete the operation before our timeout expires.
3846                  */
3847                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3848                                 p2p->pending_listen_usec + 20000);
3849         }
3850
3851         p2p->pending_listen_freq = 0;
3852 }
3853
3854
3855 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3856 {
3857         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3858         p2p->drv_in_listen = 0;
3859         if (p2p->in_listen)
3860                 return 0; /* Internal timeout will trigger the next step */
3861
3862         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3863                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3864                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3865                         p2p_go_neg_failed(p2p, -1);
3866                         return 0;
3867                 }
3868
3869                 p2p_set_state(p2p, P2P_CONNECT);
3870                 p2p_connect_send(p2p, p2p->go_neg_peer);
3871                 return 1;
3872         } else if (p2p->state == P2P_SEARCH) {
3873                 if (p2p->p2p_scan_running) {
3874                          /*
3875                           * Search is already in progress. This can happen if
3876                           * an Action frame RX is reported immediately after
3877                           * the end of a remain-on-channel operation and the
3878                           * response frame to that is sent using an offchannel
3879                           * operation while in p2p_find. Avoid an attempt to
3880                           * restart a scan here.
3881                           */
3882                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3883                         return 1;
3884                 }
3885                 if (p2p->pending_listen_freq) {
3886                         /*
3887                          * Better wait a bit if the driver is unable to start
3888                          * offchannel operation for some reason. p2p_search()
3889                          * will be started from internal timeout.
3890                          */
3891                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3892                         p2p_set_timeout(p2p, 0, 100000);
3893                         return 1;
3894                 }
3895                 if (p2p->search_delay) {
3896                         p2p_dbg(p2p, "Delay search operation by %u ms",
3897                                 p2p->search_delay);
3898                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3899                                         (p2p->search_delay % 1000) * 1000);
3900                         return 1;
3901                 }
3902                 p2p_search(p2p);
3903                 return 1;
3904         }
3905
3906         return 0;
3907 }
3908
3909
3910 static void p2p_timeout_connect(struct p2p_data *p2p)
3911 {
3912         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3913         if (p2p->go_neg_peer &&
3914             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3915                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3916                 p2p_go_neg_failed(p2p, -1);
3917                 return;
3918         }
3919         if (p2p->go_neg_peer &&
3920             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3921             p2p->go_neg_peer->connect_reqs < 120) {
3922                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3923                 p2p_connect_send(p2p, p2p->go_neg_peer);
3924                 return;
3925         }
3926         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3927                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3928                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3929                 p2p_set_timeout(p2p, 0, 30000);
3930                 return;
3931         }
3932         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3933         p2p_listen_in_find(p2p, 0);
3934 }
3935
3936
3937 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3938 {
3939         if (p2p->go_neg_peer) {
3940                 if (p2p->drv_in_listen) {
3941                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3942                         return;
3943                 }
3944
3945                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3946                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3947                         p2p_go_neg_failed(p2p, -1);
3948                         return;
3949                 }
3950
3951                 p2p_set_state(p2p, P2P_CONNECT);
3952                 p2p_connect_send(p2p, p2p->go_neg_peer);
3953         } else
3954                 p2p_set_state(p2p, P2P_IDLE);
3955 }
3956
3957
3958 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3959 {
3960         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3961
3962         if (p2p->cfg->is_concurrent_session_active &&
3963             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3964                 p2p_set_timeout(p2p, 0, 500000);
3965         else
3966                 p2p_set_timeout(p2p, 0, 200000);
3967 }
3968
3969
3970 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3971 {
3972         struct p2p_device *dev = p2p->go_neg_peer;
3973
3974         if (dev == NULL) {
3975                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3976                 return;
3977         }
3978
3979         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3980         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3981         p2p_listen_in_find(p2p, 0);
3982 }
3983
3984
3985 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3986 {
3987         p2p_dbg(p2p, "Service Discovery Query timeout");
3988         if (p2p->sd_peer) {
3989                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3990                 p2p->sd_peer = NULL;
3991         }
3992         p2p_continue_find(p2p);
3993 }
3994
3995
3996 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3997 {
3998         p2p_dbg(p2p, "Provision Discovery Request timeout");
3999         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4000         p2p_continue_find(p2p);
4001 }
4002
4003
4004 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4005 {
4006         u32 adv_id = 0;
4007         u8 *adv_mac = NULL;
4008
4009         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4010
4011         /*
4012          * For user initiated PD requests that we have not gotten any responses
4013          * for while in IDLE state, we retry them a couple of times before
4014          * giving up.
4015          */
4016         if (!p2p->user_initiated_pd)
4017                 return;
4018
4019         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4020
4021         if (p2p->pd_retries) {
4022                 p2p->pd_retries--;
4023                 p2p_retry_pd(p2p);
4024         } else {
4025                 struct p2p_device *dev;
4026                 int for_join = 0;
4027
4028                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4029                         if (os_memcmp(p2p->pending_pd_devaddr,
4030                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
4031                                 continue;
4032                         if (dev->req_config_methods &&
4033                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
4034                                 for_join = 1;
4035                 }
4036
4037                 if (p2p->p2ps_prov) {
4038                         adv_id = p2p->p2ps_prov->adv_id;
4039                         adv_mac = p2p->p2ps_prov->adv_mac;
4040                 }
4041
4042                 if (p2p->cfg->prov_disc_fail)
4043                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4044                                                  p2p->pending_pd_devaddr,
4045                                                  for_join ?
4046                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
4047                                                  P2P_PROV_DISC_TIMEOUT,
4048                                                  adv_id, adv_mac, NULL);
4049                 p2p_reset_pending_pd(p2p);
4050         }
4051 }
4052
4053
4054 static void p2p_timeout_invite(struct p2p_data *p2p)
4055 {
4056         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4057         p2p_set_state(p2p, P2P_INVITE_LISTEN);
4058         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4059                 /*
4060                  * Better remain on operating channel instead of listen channel
4061                  * when running a group.
4062                  */
4063                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4064                 p2p_set_timeout(p2p, 0, 100000);
4065                 return;
4066         }
4067         p2p_listen_in_find(p2p, 0);
4068 }
4069
4070
4071 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4072 {
4073         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4074                 p2p_set_state(p2p, P2P_INVITE);
4075                 p2p_invite_send(p2p, p2p->invite_peer,
4076                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4077         } else {
4078                 if (p2p->invite_peer) {
4079                         p2p_dbg(p2p, "Invitation Request retry limit reached");
4080                         if (p2p->cfg->invitation_result)
4081                                 p2p->cfg->invitation_result(
4082                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
4083                                         p2p->invite_peer->info.p2p_device_addr,
4084                                         0, 0);
4085                 }
4086                 p2p_set_state(p2p, P2P_IDLE);
4087         }
4088 }
4089
4090
4091 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4092 {
4093         struct p2p_data *p2p = eloop_ctx;
4094
4095         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4096
4097         p2p->in_listen = 0;
4098         if (p2p->drv_in_listen) {
4099                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4100                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4101         }
4102
4103         switch (p2p->state) {
4104         case P2P_IDLE:
4105                 /* Check if we timed out waiting for PD req */
4106                 if (p2p->pending_action_state == P2P_PENDING_PD)
4107                         p2p_timeout_prov_disc_req(p2p);
4108                 break;
4109         case P2P_SEARCH:
4110                 /* Check if we timed out waiting for PD req */
4111                 if (p2p->pending_action_state == P2P_PENDING_PD)
4112                         p2p_timeout_prov_disc_req(p2p);
4113                 if (p2p->search_delay && !p2p->in_search_delay) {
4114                         p2p_dbg(p2p, "Delay search operation by %u ms",
4115                                 p2p->search_delay);
4116                         p2p->in_search_delay = 1;
4117                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4118                                         (p2p->search_delay % 1000) * 1000);
4119                         break;
4120                 }
4121                 p2p->in_search_delay = 0;
4122                 p2p_search(p2p);
4123                 break;
4124         case P2P_CONNECT:
4125                 p2p_timeout_connect(p2p);
4126                 break;
4127         case P2P_CONNECT_LISTEN:
4128                 p2p_timeout_connect_listen(p2p);
4129                 break;
4130         case P2P_GO_NEG:
4131                 break;
4132         case P2P_LISTEN_ONLY:
4133                 /* Check if we timed out waiting for PD req */
4134                 if (p2p->pending_action_state == P2P_PENDING_PD)
4135                         p2p_timeout_prov_disc_req(p2p);
4136
4137                 if (p2p->ext_listen_only) {
4138                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4139                         p2p->ext_listen_only = 0;
4140                         p2p_set_state(p2p, P2P_IDLE);
4141                 }
4142                 break;
4143         case P2P_WAIT_PEER_CONNECT:
4144                 p2p_timeout_wait_peer_connect(p2p);
4145                 break;
4146         case P2P_WAIT_PEER_IDLE:
4147                 p2p_timeout_wait_peer_idle(p2p);
4148                 break;
4149         case P2P_SD_DURING_FIND:
4150                 p2p_timeout_sd_during_find(p2p);
4151                 break;
4152         case P2P_PROVISIONING:
4153                 break;
4154         case P2P_PD_DURING_FIND:
4155                 p2p_timeout_prov_disc_during_find(p2p);
4156                 break;
4157         case P2P_INVITE:
4158                 p2p_timeout_invite(p2p);
4159                 break;
4160         case P2P_INVITE_LISTEN:
4161                 p2p_timeout_invite_listen(p2p);
4162                 break;
4163         }
4164 }
4165
4166
4167 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4168 {
4169         struct p2p_device *dev;
4170
4171         dev = p2p_get_device(p2p, peer_addr);
4172         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4173                 MACSTR, MAC2STR(peer_addr));
4174         if (dev == NULL) {
4175                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4176                 return -1;
4177         }
4178         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4179         dev->flags |= P2P_DEV_USER_REJECTED;
4180         return 0;
4181 }
4182
4183
4184 const char * p2p_wps_method_text(enum p2p_wps_method method)
4185 {
4186         switch (method) {
4187         case WPS_NOT_READY:
4188                 return "not-ready";
4189         case WPS_PIN_DISPLAY:
4190                 return "Display";
4191         case WPS_PIN_KEYPAD:
4192                 return "Keypad";
4193         case WPS_PBC:
4194                 return "PBC";
4195         case WPS_NFC:
4196                 return "NFC";
4197         case WPS_P2PS:
4198                 return "P2PS";
4199         }
4200
4201         return "??";
4202 }
4203
4204
4205 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4206 {
4207         switch (go_state) {
4208         case UNKNOWN_GO:
4209                 return "unknown";
4210         case LOCAL_GO:
4211                 return "local";
4212         case  REMOTE_GO:
4213                 return "remote";
4214         }
4215
4216         return "??";
4217 }
4218
4219
4220 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4221                                                const u8 *addr, int next)
4222 {
4223         struct p2p_device *dev;
4224
4225         if (addr)
4226                 dev = p2p_get_device(p2p, addr);
4227         else
4228                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4229
4230         if (dev && next) {
4231                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4232                 if (&dev->list == &p2p->devices)
4233                         dev = NULL;
4234         }
4235
4236         if (dev == NULL)
4237                 return NULL;
4238
4239         return &dev->info;
4240 }
4241
4242
4243 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4244                           char *buf, size_t buflen)
4245 {
4246         struct p2p_device *dev;
4247         int res;
4248         char *pos, *end;
4249         struct os_reltime now;
4250
4251         if (info == NULL)
4252                 return -1;
4253
4254         dev = (struct p2p_device *) (((u8 *) info) -
4255                                      offsetof(struct p2p_device, info));
4256
4257         pos = buf;
4258         end = buf + buflen;
4259
4260         os_get_reltime(&now);
4261         res = os_snprintf(pos, end - pos,
4262                           "age=%d\n"
4263                           "listen_freq=%d\n"
4264                           "wps_method=%s\n"
4265                           "interface_addr=" MACSTR "\n"
4266                           "member_in_go_dev=" MACSTR "\n"
4267                           "member_in_go_iface=" MACSTR "\n"
4268                           "go_neg_req_sent=%d\n"
4269                           "go_state=%s\n"
4270                           "dialog_token=%u\n"
4271                           "intended_addr=" MACSTR "\n"
4272                           "country=%c%c\n"
4273                           "oper_freq=%d\n"
4274                           "req_config_methods=0x%x\n"
4275                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4276                           "status=%d\n"
4277                           "invitation_reqs=%u\n",
4278                           (int) (now.sec - dev->last_seen.sec),
4279                           dev->listen_freq,
4280                           p2p_wps_method_text(dev->wps_method),
4281                           MAC2STR(dev->interface_addr),
4282                           MAC2STR(dev->member_in_go_dev),
4283                           MAC2STR(dev->member_in_go_iface),
4284                           dev->go_neg_req_sent,
4285                           p2p_go_state_text(dev->go_state),
4286                           dev->dialog_token,
4287                           MAC2STR(dev->intended_addr),
4288                           dev->country[0] ? dev->country[0] : '_',
4289                           dev->country[1] ? dev->country[1] : '_',
4290                           dev->oper_freq,
4291                           dev->req_config_methods,
4292                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4293                           "[PROBE_REQ_ONLY]" : "",
4294                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4295                           dev->flags & P2P_DEV_NOT_YET_READY ?
4296                           "[NOT_YET_READY]" : "",
4297                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4298                           "[PD_PEER_DISPLAY]" : "",
4299                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4300                           "[PD_PEER_KEYPAD]" : "",
4301                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4302                           "[PD_PEER_P2PS]" : "",
4303                           dev->flags & P2P_DEV_USER_REJECTED ?
4304                           "[USER_REJECTED]" : "",
4305                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4306                           "[PEER_WAITING_RESPONSE]" : "",
4307                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4308                           "[PREFER_PERSISTENT_GROUP]" : "",
4309                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4310                           "[WAIT_GO_NEG_RESPONSE]" : "",
4311                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4312                           "[WAIT_GO_NEG_CONFIRM]" : "",
4313                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4314                           "[GROUP_CLIENT_ONLY]" : "",
4315                           dev->flags & P2P_DEV_FORCE_FREQ ?
4316                           "[FORCE_FREQ]" : "",
4317                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4318                           "[PD_FOR_JOIN]" : "",
4319                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4320                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4321                           dev->status,
4322                           dev->invitation_reqs);
4323         if (os_snprintf_error(end - pos, res))
4324                 return pos - buf;
4325         pos += res;
4326
4327         if (dev->ext_listen_period) {
4328                 res = os_snprintf(pos, end - pos,
4329                                   "ext_listen_period=%u\n"
4330                                   "ext_listen_interval=%u\n",
4331                                   dev->ext_listen_period,
4332                                   dev->ext_listen_interval);
4333                 if (os_snprintf_error(end - pos, res))
4334                         return pos - buf;
4335                 pos += res;
4336         }
4337
4338         if (dev->oper_ssid_len) {
4339                 res = os_snprintf(pos, end - pos,
4340                                   "oper_ssid=%s\n",
4341                                   wpa_ssid_txt(dev->oper_ssid,
4342                                                dev->oper_ssid_len));
4343                 if (os_snprintf_error(end - pos, res))
4344                         return pos - buf;
4345                 pos += res;
4346         }
4347
4348 #ifdef CONFIG_WIFI_DISPLAY
4349         if (dev->info.wfd_subelems) {
4350                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4351                 if (os_snprintf_error(end - pos, res))
4352                         return pos - buf;
4353                 pos += res;
4354
4355                 pos += wpa_snprintf_hex(pos, end - pos,
4356                                         wpabuf_head(dev->info.wfd_subelems),
4357                                         wpabuf_len(dev->info.wfd_subelems));
4358
4359                 res = os_snprintf(pos, end - pos, "\n");
4360                 if (os_snprintf_error(end - pos, res))
4361                         return pos - buf;
4362                 pos += res;
4363         }
4364 #endif /* CONFIG_WIFI_DISPLAY */
4365
4366         return pos - buf;
4367 }
4368
4369
4370 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4371 {
4372         return p2p_get_device(p2p, addr) != NULL;
4373 }
4374
4375
4376 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4377 {
4378         if (enabled) {
4379                 p2p_dbg(p2p, "Client discoverability enabled");
4380                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4381         } else {
4382                 p2p_dbg(p2p, "Client discoverability disabled");
4383                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4384         }
4385 }
4386
4387
4388 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4389                                               u32 duration2, u32 interval2)
4390 {
4391         struct wpabuf *req;
4392         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4393         u8 *len;
4394
4395         req = wpabuf_alloc(100);
4396         if (req == NULL)
4397                 return NULL;
4398
4399         if (duration1 || interval1) {
4400                 os_memset(&desc1, 0, sizeof(desc1));
4401                 desc1.count_type = 1;
4402                 desc1.duration = duration1;
4403                 desc1.interval = interval1;
4404                 ptr1 = &desc1;
4405
4406                 if (duration2 || interval2) {
4407                         os_memset(&desc2, 0, sizeof(desc2));
4408                         desc2.count_type = 2;
4409                         desc2.duration = duration2;
4410                         desc2.interval = interval2;
4411                         ptr2 = &desc2;
4412                 }
4413         }
4414
4415         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4416         len = p2p_buf_add_ie_hdr(req);
4417         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4418         p2p_buf_update_ie_hdr(req, len);
4419
4420         return req;
4421 }
4422
4423
4424 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4425                      const u8 *own_interface_addr, unsigned int freq,
4426                      u32 duration1, u32 interval1, u32 duration2,
4427                      u32 interval2)
4428 {
4429         struct wpabuf *req;
4430
4431         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4432                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4433                 "dur2=%u int2=%u",
4434                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4435                 freq, duration1, interval1, duration2, interval2);
4436
4437         req = p2p_build_presence_req(duration1, interval1, duration2,
4438                                      interval2);
4439         if (req == NULL)
4440                 return -1;
4441
4442         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4443         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4444                             go_interface_addr,
4445                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4446                 p2p_dbg(p2p, "Failed to send Action frame");
4447         }
4448         wpabuf_free(req);
4449
4450         return 0;
4451 }
4452
4453
4454 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4455                                                size_t noa_len, u8 dialog_token)
4456 {
4457         struct wpabuf *resp;
4458         u8 *len;
4459
4460         resp = wpabuf_alloc(100 + noa_len);
4461         if (resp == NULL)
4462                 return NULL;
4463
4464         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4465         len = p2p_buf_add_ie_hdr(resp);
4466         p2p_buf_add_status(resp, status);
4467         if (noa) {
4468                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4469                 wpabuf_put_le16(resp, noa_len);
4470                 wpabuf_put_data(resp, noa, noa_len);
4471         } else
4472                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4473         p2p_buf_update_ie_hdr(resp, len);
4474
4475         return resp;
4476 }
4477
4478
4479 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4480                                      const u8 *sa, const u8 *data, size_t len,
4481                                      int rx_freq)
4482 {
4483         struct p2p_message msg;
4484         u8 status;
4485         struct wpabuf *resp;
4486         size_t g;
4487         struct p2p_group *group = NULL;
4488         int parsed = 0;
4489         u8 noa[50];
4490         int noa_len;
4491
4492         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4493
4494         for (g = 0; g < p2p->num_groups; g++) {
4495                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4496                               ETH_ALEN) == 0) {
4497                         group = p2p->groups[g];
4498                         break;
4499                 }
4500         }
4501         if (group == NULL) {
4502                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4503                         MACSTR, MAC2STR(da));
4504                 return;
4505         }
4506
4507         if (p2p_parse(data, len, &msg) < 0) {
4508                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4509                 status = P2P_SC_FAIL_INVALID_PARAMS;
4510                 goto fail;
4511         }
4512         parsed = 1;
4513
4514         if (msg.noa == NULL) {
4515                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4516                 status = P2P_SC_FAIL_INVALID_PARAMS;
4517                 goto fail;
4518         }
4519
4520         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4521
4522 fail:
4523         if (p2p->cfg->get_noa)
4524                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4525                                             sizeof(noa));
4526         else
4527                 noa_len = -1;
4528         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4529                                        noa_len > 0 ? noa_len : 0,
4530                                        msg.dialog_token);
4531         if (parsed)
4532                 p2p_parse_free(&msg);
4533         if (resp == NULL)
4534                 return;
4535
4536         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4537         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4538                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4539                 p2p_dbg(p2p, "Failed to send Action frame");
4540         }
4541         wpabuf_free(resp);
4542 }
4543
4544
4545 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4546                                       const u8 *sa, const u8 *data, size_t len)
4547 {
4548         struct p2p_message msg;
4549
4550         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4551
4552         if (p2p_parse(data, len, &msg) < 0) {
4553                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4554                 return;
4555         }
4556
4557         if (msg.status == NULL || msg.noa == NULL) {
4558                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4559                 p2p_parse_free(&msg);
4560                 return;
4561         }
4562
4563         if (p2p->cfg->presence_resp) {
4564                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4565                                         msg.noa, msg.noa_len);
4566         }
4567
4568         if (*msg.status) {
4569                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4570                         *msg.status);
4571                 p2p_parse_free(&msg);
4572                 return;
4573         }
4574
4575         p2p_dbg(p2p, "P2P Presence Request was accepted");
4576         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4577                     msg.noa, msg.noa_len);
4578         /* TODO: process NoA */
4579         p2p_parse_free(&msg);
4580 }
4581
4582
4583 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4584 {
4585         struct p2p_data *p2p = eloop_ctx;
4586
4587         if (p2p->ext_listen_interval) {
4588                 /* Schedule next extended listen timeout */
4589                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4590                                        p2p->ext_listen_interval_usec,
4591                                        p2p_ext_listen_timeout, p2p, NULL);
4592         }
4593
4594         if ((p2p->cfg->is_p2p_in_progress &&
4595              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4596             (p2p->pending_action_state == P2P_PENDING_PD &&
4597              p2p->pd_retries > 0)) {
4598                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4599                         p2p_state_txt(p2p->state));
4600                 return;
4601         }
4602
4603         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4604                 /*
4605                  * This should not really happen, but it looks like the Listen
4606                  * command may fail is something else (e.g., a scan) was
4607                  * running at an inconvenient time. As a workaround, allow new
4608                  * Extended Listen operation to be started.
4609                  */
4610                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4611                 p2p->ext_listen_only = 0;
4612                 p2p_set_state(p2p, P2P_IDLE);
4613         }
4614
4615         if (p2p->state != P2P_IDLE) {
4616                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4617                 return;
4618         }
4619
4620         p2p_dbg(p2p, "Extended Listen timeout");
4621         p2p->ext_listen_only = 1;
4622         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4623                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4624                 p2p->ext_listen_only = 0;
4625         }
4626 }
4627
4628
4629 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4630                    unsigned int interval)
4631 {
4632         if (period > 65535 || interval > 65535 || period > interval ||
4633             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4634                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4635                         period, interval);
4636                 return -1;
4637         }
4638
4639         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4640
4641         if (interval == 0) {
4642                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4643                 p2p->ext_listen_period = 0;
4644                 p2p->ext_listen_interval = 0;
4645                 return 0;
4646         }
4647
4648         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4649                 period, interval);
4650         p2p->ext_listen_period = period;
4651         p2p->ext_listen_interval = interval;
4652         p2p->ext_listen_interval_sec = interval / 1000;
4653         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4654
4655         eloop_register_timeout(p2p->ext_listen_interval_sec,
4656                                p2p->ext_listen_interval_usec,
4657                                p2p_ext_listen_timeout, p2p, NULL);
4658
4659         return 0;
4660 }
4661
4662
4663 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4664                       const u8 *ie, size_t ie_len)
4665 {
4666         struct p2p_message msg;
4667
4668         if (bssid == NULL || ie == NULL)
4669                 return;
4670
4671         os_memset(&msg, 0, sizeof(msg));
4672         if (p2p_parse_ies(ie, ie_len, &msg))
4673                 return;
4674         if (msg.minor_reason_code == NULL) {
4675                 p2p_parse_free(&msg);
4676                 return;
4677         }
4678
4679         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4680                 " reason_code=%u minor_reason_code=%u",
4681                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4682
4683         p2p_parse_free(&msg);
4684 }
4685
4686
4687 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4688                         const u8 *ie, size_t ie_len)
4689 {
4690         struct p2p_message msg;
4691
4692         if (bssid == NULL || ie == NULL)
4693                 return;
4694
4695         os_memset(&msg, 0, sizeof(msg));
4696         if (p2p_parse_ies(ie, ie_len, &msg))
4697                 return;
4698         if (msg.minor_reason_code == NULL) {
4699                 p2p_parse_free(&msg);
4700                 return;
4701         }
4702
4703         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4704                 " reason_code=%u minor_reason_code=%u",
4705                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4706
4707         p2p_parse_free(&msg);
4708 }
4709
4710
4711 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4712 {
4713         if (enabled) {
4714                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4715                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4716         } else {
4717                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4718                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4719         }
4720 }
4721
4722
4723 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4724                                  u8 *op_channel)
4725 {
4726         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4727 }
4728
4729
4730 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4731                            u8 forced)
4732 {
4733         if (p2p_channel_to_freq(reg_class, channel) < 0)
4734                 return -1;
4735
4736         /*
4737          * Listen channel was set in configuration or set by control interface;
4738          * cannot override it.
4739          */
4740         if (p2p->cfg->channel_forced && forced == 0) {
4741                 p2p_dbg(p2p,
4742                         "Listen channel was previously configured - do not override based on optimization");
4743                 return -1;
4744         }
4745
4746         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4747                 reg_class, channel);
4748
4749         if (p2p->state == P2P_IDLE) {
4750                 p2p->cfg->reg_class = reg_class;
4751                 p2p->cfg->channel = channel;
4752                 p2p->cfg->channel_forced = forced;
4753         } else {
4754                 p2p_dbg(p2p, "Defer setting listen channel");
4755                 p2p->pending_reg_class = reg_class;
4756                 p2p->pending_channel = channel;
4757                 p2p->pending_channel_forced = forced;
4758         }
4759
4760         return 0;
4761 }
4762
4763
4764 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4765 {
4766         return p2p->cfg->channel;
4767 }
4768
4769
4770 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4771 {
4772         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4773         if (postfix == NULL) {
4774                 p2p->cfg->ssid_postfix_len = 0;
4775                 return 0;
4776         }
4777         if (len > sizeof(p2p->cfg->ssid_postfix))
4778                 return -1;
4779         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4780         p2p->cfg->ssid_postfix_len = len;
4781         return 0;
4782 }
4783
4784
4785 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4786                          int cfg_op_channel)
4787 {
4788         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4789                 return -1;
4790
4791         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4792                 op_reg_class, op_channel);
4793         p2p->cfg->op_reg_class = op_reg_class;
4794         p2p->cfg->op_channel = op_channel;
4795         p2p->cfg->cfg_op_channel = cfg_op_channel;
4796         return 0;
4797 }
4798
4799
4800 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4801                       const struct p2p_channel *pref_chan)
4802 {
4803         struct p2p_channel *n;
4804
4805         if (pref_chan) {
4806                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4807                 if (n == NULL)
4808                         return -1;
4809                 os_memcpy(n, pref_chan,
4810                           num_pref_chan * sizeof(struct p2p_channel));
4811         } else
4812                 n = NULL;
4813
4814         os_free(p2p->cfg->pref_chan);
4815         p2p->cfg->pref_chan = n;
4816         p2p->cfg->num_pref_chan = num_pref_chan;
4817
4818         return 0;
4819 }
4820
4821
4822 int p2p_set_no_go_freq(struct p2p_data *p2p,
4823                        const struct wpa_freq_range_list *list)
4824 {
4825         struct wpa_freq_range *tmp;
4826
4827         if (list == NULL || list->num == 0) {
4828                 os_free(p2p->no_go_freq.range);
4829                 p2p->no_go_freq.range = NULL;
4830                 p2p->no_go_freq.num = 0;
4831                 return 0;
4832         }
4833
4834         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4835         if (tmp == NULL)
4836                 return -1;
4837         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4838         os_free(p2p->no_go_freq.range);
4839         p2p->no_go_freq.range = tmp;
4840         p2p->no_go_freq.num = list->num;
4841         p2p_dbg(p2p, "Updated no GO chan list");
4842
4843         return 0;
4844 }
4845
4846
4847 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4848                            u8 *iface_addr)
4849 {
4850         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4851         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4852                 return -1;
4853         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4854         return 0;
4855 }
4856
4857
4858 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4859                            u8 *dev_addr)
4860 {
4861         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4862         if (dev == NULL)
4863                 return -1;
4864         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4865         return 0;
4866 }
4867
4868
4869 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4870 {
4871         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4872         if (is_zero_ether_addr(p2p->peer_filter))
4873                 p2p_dbg(p2p, "Disable peer filter");
4874         else
4875                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4876                         MAC2STR(p2p->peer_filter));
4877 }
4878
4879
4880 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4881 {
4882         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4883         if (p2p->cross_connect == enabled)
4884                 return;
4885         p2p->cross_connect = enabled;
4886         /* TODO: may need to tear down any action group where we are GO(?) */
4887 }
4888
4889
4890 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4891 {
4892         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4893         if (dev == NULL)
4894                 return -1;
4895         if (dev->oper_freq <= 0)
4896                 return -1;
4897         return dev->oper_freq;
4898 }
4899
4900
4901 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4902 {
4903         p2p_dbg(p2p, "Intra BSS distribution %s",
4904                 enabled ? "enabled" : "disabled");
4905         p2p->cfg->p2p_intra_bss = enabled;
4906 }
4907
4908
4909 void p2p_update_channel_list(struct p2p_data *p2p,
4910                              const struct p2p_channels *chan,
4911                              const struct p2p_channels *cli_chan)
4912 {
4913         p2p_dbg(p2p, "Update channel list");
4914         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4915         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4916         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4917                   sizeof(struct p2p_channels));
4918         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4919 }
4920
4921
4922 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4923                     const u8 *src, const u8 *bssid, const u8 *buf,
4924                     size_t len, unsigned int wait_time)
4925 {
4926         if (p2p->p2p_scan_running) {
4927                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4928                 if (p2p->after_scan_tx) {
4929                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4930                         os_free(p2p->after_scan_tx);
4931                 }
4932                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4933                                                len);
4934                 if (p2p->after_scan_tx == NULL)
4935                         return -1;
4936                 p2p->after_scan_tx->freq = freq;
4937                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4938                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4939                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4940                 p2p->after_scan_tx->len = len;
4941                 p2p->after_scan_tx->wait_time = wait_time;
4942                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4943                 return 0;
4944         }
4945
4946         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4947                                      buf, len, wait_time);
4948 }
4949
4950
4951 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4952                            int freq_overall)
4953 {
4954         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4955                 freq_24, freq_5, freq_overall);
4956         p2p->best_freq_24 = freq_24;
4957         p2p->best_freq_5 = freq_5;
4958         p2p->best_freq_overall = freq_overall;
4959 }
4960
4961
4962 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4963 {
4964         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4965         p2p->own_freq_preference = freq;
4966 }
4967
4968
4969 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4970 {
4971         if (p2p == NULL || p2p->go_neg_peer == NULL)
4972                 return NULL;
4973         return p2p->go_neg_peer->info.p2p_device_addr;
4974 }
4975
4976
4977 const struct p2p_peer_info *
4978 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4979 {
4980         struct p2p_device *dev;
4981
4982         if (addr) {
4983                 dev = p2p_get_device(p2p, addr);
4984                 if (!dev)
4985                         return NULL;
4986
4987                 if (!next) {
4988                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4989                                 return NULL;
4990
4991                         return &dev->info;
4992                 } else {
4993                         do {
4994                                 dev = dl_list_first(&dev->list,
4995                                                     struct p2p_device,
4996                                                     list);
4997                                 if (!dev || &dev->list == &p2p->devices)
4998                                         return NULL;
4999                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5000                 }
5001         } else {
5002                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5003                 if (!dev)
5004                         return NULL;
5005                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5006                         dev = dl_list_first(&dev->list,
5007                                             struct p2p_device,
5008                                             list);
5009                         if (!dev || &dev->list == &p2p->devices)
5010                                 return NULL;
5011                 }
5012         }
5013
5014         return &dev->info;
5015 }
5016
5017
5018 int p2p_in_progress(struct p2p_data *p2p)
5019 {
5020         if (p2p == NULL)
5021                 return 0;
5022         if (p2p->state == P2P_SEARCH)
5023                 return 2;
5024         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5025 }
5026
5027
5028 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5029                             u8 client_timeout)
5030 {
5031         if (p2p) {
5032                 p2p->go_timeout = go_timeout;
5033                 p2p->client_timeout = client_timeout;
5034         }
5035 }
5036
5037
5038 #ifdef CONFIG_WIFI_DISPLAY
5039
5040 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5041 {
5042         size_t g;
5043         struct p2p_group *group;
5044
5045         for (g = 0; g < p2p->num_groups; g++) {
5046                 group = p2p->groups[g];
5047                 p2p_group_force_beacon_update_ies(group);
5048         }
5049 }
5050
5051
5052 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5053 {
5054         wpabuf_free(p2p->wfd_ie_beacon);
5055         p2p->wfd_ie_beacon = ie;
5056         p2p_update_wfd_ie_groups(p2p);
5057         return 0;
5058 }
5059
5060
5061 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5062 {
5063         wpabuf_free(p2p->wfd_ie_probe_req);
5064         p2p->wfd_ie_probe_req = ie;
5065         return 0;
5066 }
5067
5068
5069 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5070 {
5071         wpabuf_free(p2p->wfd_ie_probe_resp);
5072         p2p->wfd_ie_probe_resp = ie;
5073         p2p_update_wfd_ie_groups(p2p);
5074         return 0;
5075 }
5076
5077
5078 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5079 {
5080         wpabuf_free(p2p->wfd_ie_assoc_req);
5081         p2p->wfd_ie_assoc_req = ie;
5082         return 0;
5083 }
5084
5085
5086 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5087 {
5088         wpabuf_free(p2p->wfd_ie_invitation);
5089         p2p->wfd_ie_invitation = ie;
5090         return 0;
5091 }
5092
5093
5094 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5095 {
5096         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5097         p2p->wfd_ie_prov_disc_req = ie;
5098         return 0;
5099 }
5100
5101
5102 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5103 {
5104         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5105         p2p->wfd_ie_prov_disc_resp = ie;
5106         return 0;
5107 }
5108
5109
5110 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5111 {
5112         wpabuf_free(p2p->wfd_ie_go_neg);
5113         p2p->wfd_ie_go_neg = ie;
5114         return 0;
5115 }
5116
5117
5118 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5119 {
5120         wpabuf_free(p2p->wfd_dev_info);
5121         if (elem) {
5122                 p2p->wfd_dev_info = wpabuf_dup(elem);
5123                 if (p2p->wfd_dev_info == NULL)
5124                         return -1;
5125         } else
5126                 p2p->wfd_dev_info = NULL;
5127
5128         return 0;
5129 }
5130
5131
5132 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5133 {
5134         wpabuf_free(p2p->wfd_assoc_bssid);
5135         if (elem) {
5136                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5137                 if (p2p->wfd_assoc_bssid == NULL)
5138                         return -1;
5139         } else
5140                 p2p->wfd_assoc_bssid = NULL;
5141
5142         return 0;
5143 }
5144
5145
5146 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5147                                   const struct wpabuf *elem)
5148 {
5149         wpabuf_free(p2p->wfd_coupled_sink_info);
5150         if (elem) {
5151                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5152                 if (p2p->wfd_coupled_sink_info == NULL)
5153                         return -1;
5154         } else
5155                 p2p->wfd_coupled_sink_info = NULL;
5156
5157         return 0;
5158 }
5159
5160 #endif /* CONFIG_WIFI_DISPLAY */
5161
5162
5163 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5164                      int max_disc_tu)
5165 {
5166         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5167                 return -1;
5168
5169         p2p->min_disc_int = min_disc_int;
5170         p2p->max_disc_int = max_disc_int;
5171         p2p->max_disc_tu = max_disc_tu;
5172         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5173                 min_disc_int, max_disc_int, max_disc_tu);
5174
5175         return 0;
5176 }
5177
5178
5179 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5180 {
5181         va_list ap;
5182         char buf[500];
5183
5184         if (!p2p->cfg->debug_print)
5185                 return;
5186
5187         va_start(ap, fmt);
5188         vsnprintf(buf, sizeof(buf), fmt, ap);
5189         buf[sizeof(buf) - 1] = '\0';
5190         va_end(ap);
5191         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5192 }
5193
5194
5195 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5196 {
5197         va_list ap;
5198         char buf[500];
5199
5200         if (!p2p->cfg->debug_print)
5201                 return;
5202
5203         va_start(ap, fmt);
5204         vsnprintf(buf, sizeof(buf), fmt, ap);
5205         buf[sizeof(buf) - 1] = '\0';
5206         va_end(ap);
5207         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5208 }
5209
5210
5211 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5212 {
5213         va_list ap;
5214         char buf[500];
5215
5216         if (!p2p->cfg->debug_print)
5217                 return;
5218
5219         va_start(ap, fmt);
5220         vsnprintf(buf, sizeof(buf), fmt, ap);
5221         buf[sizeof(buf) - 1] = '\0';
5222         va_end(ap);
5223         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5224 }
5225
5226
5227 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5228                              void (*peer_callback)(struct p2p_peer_info *peer,
5229                                                    void *user_data),
5230                              void *user_data)
5231 {
5232         struct p2p_device *dev, *n;
5233
5234         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5235                 peer_callback(&dev->info, user_data);
5236         }
5237 }
5238
5239
5240 #ifdef CONFIG_WPS_NFC
5241
5242 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5243                                               int client_freq,
5244                                               const u8 *go_dev_addr,
5245                                               const u8 *ssid, size_t ssid_len)
5246 {
5247         struct wpabuf *buf;
5248         u8 op_class, channel;
5249         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5250
5251         buf = wpabuf_alloc(1000);
5252         if (buf == NULL)
5253                 return NULL;
5254
5255         op_class = p2p->cfg->reg_class;
5256         channel = p2p->cfg->channel;
5257
5258         p2p_buf_add_capability(buf, p2p->dev_capab &
5259                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5260         p2p_buf_add_device_info(buf, p2p, NULL);
5261
5262         if (p2p->num_groups > 0) {
5263                 int freq = p2p_group_get_freq(p2p->groups[0]);
5264                 role = P2P_GO_IN_A_GROUP;
5265                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5266                         p2p_dbg(p2p,
5267                                 "Unknown GO operating frequency %d MHz for NFC handover",
5268                                 freq);
5269                         wpabuf_free(buf);
5270                         return NULL;
5271                 }
5272         } else if (client_freq > 0) {
5273                 role = P2P_CLIENT_IN_A_GROUP;
5274                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5275                         p2p_dbg(p2p,
5276                                 "Unknown client operating frequency %d MHz for NFC handover",
5277                                 client_freq);
5278                         wpabuf_free(buf);
5279                         return NULL;
5280                 }
5281         }
5282
5283         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5284                                        channel, role);
5285
5286         if (p2p->num_groups > 0) {
5287                 /* Limit number of clients to avoid very long message */
5288                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5289                 p2p_group_buf_add_id(p2p->groups[0], buf);
5290         } else if (client_freq > 0 &&
5291                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5292                    ssid && ssid_len > 0) {
5293                 /*
5294                  * Add the optional P2P Group ID to indicate in which group this
5295                  * device is a P2P Client.
5296                  */
5297                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5298         }
5299
5300         return buf;
5301 }
5302
5303
5304 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5305                                            int client_freq,
5306                                            const u8 *go_dev_addr,
5307                                            const u8 *ssid, size_t ssid_len)
5308 {
5309         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5310                                       ssid_len);
5311 }
5312
5313
5314 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5315                                            int client_freq,
5316                                            const u8 *go_dev_addr,
5317                                            const u8 *ssid, size_t ssid_len)
5318 {
5319         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5320                                       ssid_len);
5321 }
5322
5323
5324 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5325                                         struct p2p_nfc_params *params)
5326 {
5327         struct p2p_message msg;
5328         struct p2p_device *dev;
5329         const u8 *p2p_dev_addr;
5330         int freq;
5331         enum p2p_role_indication role;
5332
5333         params->next_step = NO_ACTION;
5334
5335         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5336                                    params->p2p_attr, params->p2p_len, &msg)) {
5337                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5338                 p2p_parse_free(&msg);
5339                 return -1;
5340         }
5341
5342         if (msg.p2p_device_addr)
5343                 p2p_dev_addr = msg.p2p_device_addr;
5344         else if (msg.device_id)
5345                 p2p_dev_addr = msg.device_id;
5346         else {
5347                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5348                 p2p_parse_free(&msg);
5349                 return -1;
5350         }
5351
5352         if (msg.oob_dev_password) {
5353                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5354                           msg.oob_dev_password_len);
5355                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5356         }
5357
5358         dev = p2p_create_device(p2p, p2p_dev_addr);
5359         if (dev == NULL) {
5360                 p2p_parse_free(&msg);
5361                 return -1;
5362         }
5363
5364         params->peer = &dev->info;
5365
5366         os_get_reltime(&dev->last_seen);
5367         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5368         p2p_copy_wps_info(p2p, dev, 0, &msg);
5369
5370         if (!msg.oob_go_neg_channel) {
5371                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5372                 p2p_parse_free(&msg);
5373                 return -1;
5374         }
5375
5376         if (msg.oob_go_neg_channel[3] == 0 &&
5377             msg.oob_go_neg_channel[4] == 0)
5378                 freq = 0;
5379         else
5380                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5381                                            msg.oob_go_neg_channel[4]);
5382         if (freq < 0) {
5383                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5384                 p2p_parse_free(&msg);
5385                 return -1;
5386         }
5387         role = msg.oob_go_neg_channel[5];
5388
5389         if (role == P2P_GO_IN_A_GROUP) {
5390                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5391                 params->go_freq = freq;
5392         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5393                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5394                         freq);
5395                 params->go_freq = freq;
5396         } else
5397                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5398         dev->oob_go_neg_freq = freq;
5399
5400         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5401                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5402                                            p2p->cfg->channel);
5403                 if (freq < 0) {
5404                         p2p_dbg(p2p, "Own listen channel not known");
5405                         p2p_parse_free(&msg);
5406                         return -1;
5407                 }
5408                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5409                 dev->oob_go_neg_freq = freq;
5410         }
5411
5412         if (msg.group_id) {
5413                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5414                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5415                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5416                           params->go_ssid_len);
5417         }
5418
5419         if (dev->flags & P2P_DEV_USER_REJECTED) {
5420                 p2p_dbg(p2p, "Do not report rejected device");
5421                 p2p_parse_free(&msg);
5422                 return 0;
5423         }
5424
5425         if (!(dev->flags & P2P_DEV_REPORTED)) {
5426                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5427                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5428                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5429         }
5430         p2p_parse_free(&msg);
5431
5432         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5433                 params->next_step = BOTH_GO;
5434         else if (role == P2P_GO_IN_A_GROUP)
5435                 params->next_step = JOIN_GROUP;
5436         else if (role == P2P_CLIENT_IN_A_GROUP) {
5437                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5438                 params->next_step = PEER_CLIENT;
5439         } else if (p2p->num_groups > 0)
5440                 params->next_step = AUTH_JOIN;
5441         else if (params->sel)
5442                 params->next_step = INIT_GO_NEG;
5443         else
5444                 params->next_step = RESP_GO_NEG;
5445
5446         return 0;
5447 }
5448
5449
5450 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5451                                       int go_intent,
5452                                       const u8 *own_interface_addr)
5453 {
5454
5455         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5456         if (dev_pw_id == 0) {
5457                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5458                 return;
5459         }
5460
5461         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5462                 dev_pw_id);
5463
5464         p2p->go_intent = go_intent;
5465         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5466 }
5467
5468 #endif /* CONFIG_WPS_NFC */
5469
5470
5471 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5472 {
5473         if (len < 8 || len > 63)
5474                 return -1;
5475         p2p->cfg->passphrase_len = len;
5476         return 0;
5477 }
5478
5479
5480 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5481 {
5482         p2p->vendor_elem = vendor_elem;
5483 }
5484
5485
5486 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5487 {
5488         struct p2p_data *p2p = eloop_ctx;
5489
5490         p2p_dbg(p2p,
5491                 "Timeout on waiting peer to become ready for GO Negotiation");
5492         p2p_go_neg_failed(p2p, -1);
5493 }
5494
5495
5496 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5497                                 const unsigned int *pref_freq_list,
5498                                 unsigned int size)
5499 {
5500         unsigned int i;
5501
5502         if (size > P2P_MAX_PREF_CHANNELS)
5503                 size = P2P_MAX_PREF_CHANNELS;
5504         p2p->num_pref_freq = size;
5505         for (i = 0; i < size; i++) {
5506                 p2p->pref_freq_list[i] = pref_freq_list[i];
5507                 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5508                         i, p2p->pref_freq_list[i]);
5509         }
5510 }
5511
5512
5513 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5514                                               unsigned int freq)
5515 {
5516         struct wpabuf *ies, *buf;
5517         u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5518         int ret;
5519
5520         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5521         if (!ies) {
5522                 wpa_printf(MSG_ERROR,
5523                            "CTRL: Failed to build Probe Response IEs");
5524                 return NULL;
5525         }
5526
5527         buf = wpabuf_alloc(200 + wpabuf_len(ies));
5528         if (!buf) {
5529                 wpabuf_free(ies);
5530                 return NULL;
5531         }
5532
5533         ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5534         wpabuf_free(ies);
5535         if (ret) {
5536                 wpabuf_free(buf);
5537                 return NULL;
5538         }
5539
5540         return buf;
5541 }