src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p_i.h"
  18 #include "p2p.h"
  19
  20
  21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  24                                      const u8 *sa, const u8 *data, size_t len,
  25                                      int rx_freq);
  26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  27                                       const u8 *sa, const u8 *data,
  28                                       size_t len);
  29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  31
  32
  33 /*
  34  * p2p_scan recovery timeout
  35  *
  36  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  37  * timeout for this to avoid hitting P2P timeout unnecessarily.
  38  */
  39 #define P2P_SCAN_TIMEOUT 35
  40
  41 /**
  42  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  43  * entries will be removed
  44  */
  45 #ifndef P2P_PEER_EXPIRATION_AGE
  46 #define P2P_PEER_EXPIRATION_AGE 60
  47 #endif /* P2P_PEER_EXPIRATION_AGE */
  48
  49 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  50
  51 static void p2p_expire_peers(struct p2p_data *p2p)
  52 {
  53         struct p2p_device *dev, *n;
  54         struct os_reltime now;
  55         size_t i;
  56
  57         os_get_reltime(&now);
  58         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  59                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  60                         continue;
  61
  62                 if (dev == p2p->go_neg_peer) {
  63                         /*
  64                          * GO Negotiation is in progress with the peer, so
  65                          * don't expire the peer entry until GO Negotiation
  66                          * fails or times out.
  67                          */
  68                         continue;
  69                 }
  70
  71                 if (p2p->cfg->go_connected &&
  72                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  73                                            dev->info.p2p_device_addr)) {
  74                         /*
  75                          * We are connected as a client to a group in which the
  76                          * peer is the GO, so do not expire the peer entry.
  77                          */
  78                         os_get_reltime(&dev->last_seen);
  79                         continue;
  80                 }
  81
  82                 for (i = 0; i < p2p->num_groups; i++) {
  83                         if (p2p_group_is_client_connected(
  84                                     p2p->groups[i], dev->info.p2p_device_addr))
  85                                 break;
  86                 }
  87                 if (i < p2p->num_groups) {
  88                         /*
  89                          * The peer is connected as a client in a group where
  90                          * we are the GO, so do not expire the peer entry.
  91                          */
  92                         os_get_reltime(&dev->last_seen);
  93                         continue;
  94                 }
  95
  96                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  97                         MAC2STR(dev->info.p2p_device_addr));
  98                 dl_list_del(&dev->list);
  99                 p2p_device_free(p2p, dev);
 100         }
 101 }
 102
 103
 104 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 105 {
 106         struct p2p_data *p2p = eloop_ctx;
 107         p2p_expire_peers(p2p);
 108         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 109                                p2p_expiration_timeout, p2p, NULL);
 110 }
 111
 112
 113 static const char * p2p_state_txt(int state)
 114 {
 115         switch (state) {
 116         case P2P_IDLE:
 117                 return "IDLE";
 118         case P2P_SEARCH:
 119                 return "SEARCH";
 120         case P2P_CONNECT:
 121                 return "CONNECT";
 122         case P2P_CONNECT_LISTEN:
 123                 return "CONNECT_LISTEN";
 124         case P2P_GO_NEG:
 125                 return "GO_NEG";
 126         case P2P_LISTEN_ONLY:
 127                 return "LISTEN_ONLY";
 128         case P2P_WAIT_PEER_CONNECT:
 129                 return "WAIT_PEER_CONNECT";
 130         case P2P_WAIT_PEER_IDLE:
 131                 return "WAIT_PEER_IDLE";
 132         case P2P_SD_DURING_FIND:
 133                 return "SD_DURING_FIND";
 134         case P2P_PROVISIONING:
 135                 return "PROVISIONING";
 136         case P2P_PD_DURING_FIND:
 137                 return "PD_DURING_FIND";
 138         case P2P_INVITE:
 139                 return "INVITE";
 140         case P2P_INVITE_LISTEN:
 141                 return "INVITE_LISTEN";
 142         default:
 143                 return "?";
 144         }
 145 }
 146
 147
 148 const char * p2p_get_state_txt(struct p2p_data *p2p)
 149 {
 150         return p2p_state_txt(p2p->state);
 151 }
 152
 153
 154 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 155 {
 156         struct p2p_device *dev = NULL;
 157
 158         if (!addr || !p2p)
 159                 return 0;
 160
 161         dev = p2p_get_device(p2p, addr);
 162         if (dev)
 163                 return dev->wps_prov_info;
 164         else
 165                 return 0;
 166 }
 167
 168
 169 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 170 {
 171         struct p2p_device *dev = NULL;
 172
 173         if (!addr || !p2p)
 174                 return;
 175
 176         dev = p2p_get_device(p2p, addr);
 177         if (dev)
 178                 dev->wps_prov_info = 0;
 179 }
 180
 181
 182 void p2p_set_state(struct p2p_data *p2p, int new_state)
 183 {
 184         p2p_dbg(p2p, "State %s -> %s",
 185                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 186         p2p->state = new_state;
 187
 188         if (new_state == P2P_IDLE && p2p->pending_channel) {
 189                 p2p_dbg(p2p, "Apply change in listen channel");
 190                 p2p->cfg->reg_class = p2p->pending_reg_class;
 191                 p2p->cfg->channel = p2p->pending_channel;
 192                 p2p->pending_reg_class = 0;
 193                 p2p->pending_channel = 0;
 194         }
 195 }
 196
 197
 198 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 199 {
 200         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 201                 p2p_state_txt(p2p->state), sec, usec);
 202         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 203         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 204 }
 205
 206
 207 void p2p_clear_timeout(struct p2p_data *p2p)
 208 {
 209         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 210         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 211 }
 212
 213
 214 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 215                        int status)
 216 {
 217         struct p2p_go_neg_results res;
 218         p2p_clear_timeout(p2p);
 219         p2p_set_state(p2p, P2P_IDLE);
 220         if (p2p->go_neg_peer) {
 221                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 222                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 223                 p2p->go_neg_peer->oob_pw_id = 0;
 224         }
 225         p2p->go_neg_peer = NULL;
 226
 227         os_memset(&res, 0, sizeof(res));
 228         res.status = status;
 229         if (peer) {
 230                 wpabuf_free(peer->go_neg_conf);
 231                 peer->go_neg_conf = NULL;
 232                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 233                           ETH_ALEN);
 234                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 235                           ETH_ALEN);
 236         }
 237         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 238 }
 239
 240
 241 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 242 {
 243         unsigned int r, tu;
 244         int freq;
 245         struct wpabuf *ies;
 246
 247         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 248                 p2p_state_txt(p2p->state));
 249
 250         if (p2p->pending_listen_freq) {
 251                 /* We have a pending p2p_listen request */
 252                 p2p_dbg(p2p, "p2p_listen command pending already");
 253                 return;
 254         }
 255
 256         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 257         if (freq < 0) {
 258                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 259                 return;
 260         }
 261
 262         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 263                 r = 0;
 264         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 265               p2p->min_disc_int) * 100;
 266         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 267                 tu = p2p->max_disc_tu;
 268         if (!dev_disc && tu < 100)
 269                 tu = 100; /* Need to wait in non-device discovery use cases */
 270         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 271                 tu = p2p->cfg->max_listen * 1000 / 1024;
 272
 273         if (tu == 0) {
 274                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 275                 p2p_set_timeout(p2p, 0, 0);
 276                 return;
 277         }
 278
 279         ies = p2p_build_probe_resp_ies(p2p);
 280         if (ies == NULL)
 281                 return;
 282
 283         p2p->pending_listen_freq = freq;
 284         p2p->pending_listen_sec = 0;
 285         p2p->pending_listen_usec = 1024 * tu;
 286
 287         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 288                     ies) < 0) {
 289                 p2p_dbg(p2p, "Failed to start listen mode");
 290                 p2p->pending_listen_freq = 0;
 291         }
 292         wpabuf_free(ies);
 293 }
 294
 295
 296 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 297 {
 298         int freq;
 299         struct wpabuf *ies;
 300
 301         p2p_dbg(p2p, "Going to listen(only) state");
 302
 303         if (p2p->pending_listen_freq) {
 304                 /* We have a pending p2p_listen request */
 305                 p2p_dbg(p2p, "p2p_listen command pending already");
 306                 return -1;
 307         }
 308
 309         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 310         if (freq < 0) {
 311                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 312                 return -1;
 313         }
 314
 315         p2p->pending_listen_sec = timeout / 1000;
 316         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 317
 318         if (p2p->p2p_scan_running) {
 319                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 320                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 321                         return 0;
 322                 }
 323                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 324                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 325                 return 0;
 326         }
 327
 328         ies = p2p_build_probe_resp_ies(p2p);
 329         if (ies == NULL)
 330                 return -1;
 331
 332         p2p->pending_listen_freq = freq;
 333
 334         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 335                 p2p_dbg(p2p, "Failed to start listen mode");
 336                 p2p->pending_listen_freq = 0;
 337                 wpabuf_free(ies);
 338                 return -1;
 339         }
 340         wpabuf_free(ies);
 341
 342         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 343
 344         return 0;
 345 }
 346
 347
 348 static void p2p_device_clear_reported(struct p2p_data *p2p)
 349 {
 350         struct p2p_device *dev;
 351         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 352                 dev->flags &= ~P2P_DEV_REPORTED;
 353 }
 354
 355
 356 /**
 357  * p2p_get_device - Fetch a peer entry
 358  * @p2p: P2P module context from p2p_init()
 359  * @addr: P2P Device Address of the peer
 360  * Returns: Pointer to the device entry or %NULL if not found
 361  */
 362 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 363 {
 364         struct p2p_device *dev;
 365         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 366                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 367                         return dev;
 368         }
 369         return NULL;
 370 }
 371
 372
 373 /**
 374  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 375  * @p2p: P2P module context from p2p_init()
 376  * @addr: P2P Interface Address of the peer
 377  * Returns: Pointer to the device entry or %NULL if not found
 378  */
 379 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 380                                              const u8 *addr)
 381 {
 382         struct p2p_device *dev;
 383         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 384                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 385                         return dev;
 386         }
 387         return NULL;
 388 }
 389
 390
 391 /**
 392  * p2p_create_device - Create a peer entry
 393  * @p2p: P2P module context from p2p_init()
 394  * @addr: P2P Device Address of the peer
 395  * Returns: Pointer to the device entry or %NULL on failure
 396  *
 397  * If there is already an entry for the peer, it will be returned instead of
 398  * creating a new one.
 399  */
 400 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 401                                              const u8 *addr)
 402 {
 403         struct p2p_device *dev, *oldest = NULL;
 404         size_t count = 0;
 405
 406         dev = p2p_get_device(p2p, addr);
 407         if (dev)
 408                 return dev;
 409
 410         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 411                 count++;
 412                 if (oldest == NULL ||
 413                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 414                         oldest = dev;
 415         }
 416         if (count + 1 > p2p->cfg->max_peers && oldest) {
 417                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 418                 dl_list_del(&oldest->list);
 419                 p2p_device_free(p2p, oldest);
 420         }
 421
 422         dev = os_zalloc(sizeof(*dev));
 423         if (dev == NULL)
 424                 return NULL;
 425         dl_list_add(&p2p->devices, &dev->list);
 426         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 427
 428         return dev;
 429 }
 430
 431
 432 static void p2p_copy_client_info(struct p2p_device *dev,
 433                                  struct p2p_client_info *cli)
 434 {
 435         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 436         dev->info.device_name[cli->dev_name_len] = '\0';
 437         dev->info.dev_capab = cli->dev_capab;
 438         dev->info.config_methods = cli->config_methods;
 439         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 440         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 441         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 442                   dev->info.wps_sec_dev_type_list_len);
 443 }
 444
 445
 446 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 447                                  const u8 *go_interface_addr, int freq,
 448                                  const u8 *gi, size_t gi_len)
 449 {
 450         struct p2p_group_info info;
 451         size_t c;
 452         struct p2p_device *dev;
 453
 454         if (gi == NULL)
 455                 return 0;
 456
 457         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 458                 return -1;
 459
 460         /*
 461          * Clear old data for this group; if the devices are still in the
 462          * group, the information will be restored in the loop following this.
 463          */
 464         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 465                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 466                               ETH_ALEN) == 0) {
 467                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 468                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 469                 }
 470         }
 471
 472         for (c = 0; c < info.num_clients; c++) {
 473                 struct p2p_client_info *cli = &info.client[c];
 474                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 475                               ETH_ALEN) == 0)
 476                         continue; /* ignore our own entry */
 477                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 478                 if (dev) {
 479                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 480                                           P2P_DEV_PROBE_REQ_ONLY)) {
 481                                 /*
 482                                  * Update information since we have not
 483                                  * received this directly from the client.
 484                                  */
 485                                 p2p_copy_client_info(dev, cli);
 486                         } else {
 487                                 /*
 488                                  * Need to update P2P Client Discoverability
 489                                  * flag since it is valid only in P2P Group
 490                                  * Info attribute.
 491                                  */
 492                                 dev->info.dev_capab &=
 493                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 494                                 dev->info.dev_capab |=
 495                                         cli->dev_capab &
 496                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 497                         }
 498                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 499                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 500                         }
 501                 } else {
 502                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 503                         if (dev == NULL)
 504                                 continue;
 505                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 506                         p2p_copy_client_info(dev, cli);
 507                         dev->oper_freq = freq;
 508                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 509                                             dev->info.p2p_device_addr,
 510                                             &dev->info, 1);
 511                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 512                 }
 513
 514                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 515                           ETH_ALEN);
 516                 os_get_reltime(&dev->last_seen);
 517                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 518                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 519                           ETH_ALEN);
 520         }
 521
 522         return 0;
 523 }
 524
 525
 526 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 527                               int probe_req, const struct p2p_message *msg)
 528 {
 529         os_memcpy(dev->info.device_name, msg->device_name,
 530                   sizeof(dev->info.device_name));
 531
 532         if (msg->manufacturer &&
 533             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 534                 os_memset(dev->info.manufacturer, 0,
 535                           sizeof(dev->info.manufacturer));
 536                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 537                           msg->manufacturer_len);
 538         }
 539
 540         if (msg->model_name &&
 541             msg->model_name_len < sizeof(dev->info.model_name)) {
 542                 os_memset(dev->info.model_name, 0,
 543                           sizeof(dev->info.model_name));
 544                 os_memcpy(dev->info.model_name, msg->model_name,
 545                           msg->model_name_len);
 546         }
 547
 548         if (msg->model_number &&
 549             msg->model_number_len < sizeof(dev->info.model_number)) {
 550                 os_memset(dev->info.model_number, 0,
 551                           sizeof(dev->info.model_number));
 552                 os_memcpy(dev->info.model_number, msg->model_number,
 553                           msg->model_number_len);
 554         }
 555
 556         if (msg->serial_number &&
 557             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 558                 os_memset(dev->info.serial_number, 0,
 559                           sizeof(dev->info.serial_number));
 560                 os_memcpy(dev->info.serial_number, msg->serial_number,
 561                           msg->serial_number_len);
 562         }
 563
 564         if (msg->pri_dev_type)
 565                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 566                           sizeof(dev->info.pri_dev_type));
 567         else if (msg->wps_pri_dev_type)
 568                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 569                           sizeof(dev->info.pri_dev_type));
 570
 571         if (msg->wps_sec_dev_type_list) {
 572                 os_memcpy(dev->info.wps_sec_dev_type_list,
 573                           msg->wps_sec_dev_type_list,
 574                           msg->wps_sec_dev_type_list_len);
 575                 dev->info.wps_sec_dev_type_list_len =
 576                         msg->wps_sec_dev_type_list_len;
 577         }
 578
 579         if (msg->capability) {
 580                 /*
 581                  * P2P Client Discoverability bit is reserved in all frames
 582                  * that use this function, so do not change its value here.
 583                  */
 584                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 585                 dev->info.dev_capab |= msg->capability[0] &
 586                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 587                 dev->info.group_capab = msg->capability[1];
 588         }
 589
 590         if (msg->ext_listen_timing) {
 591                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 592                 dev->ext_listen_interval =
 593                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 594         }
 595
 596         if (!probe_req) {
 597                 u16 new_config_methods;
 598                 new_config_methods = msg->config_methods ?
 599                         msg->config_methods : msg->wps_config_methods;
 600                 if (new_config_methods &&
 601                     dev->info.config_methods != new_config_methods) {
 602                         p2p_dbg(p2p, "Update peer " MACSTR
 603                                 " config_methods 0x%x -> 0x%x",
 604                                 MAC2STR(dev->info.p2p_device_addr),
 605                                 dev->info.config_methods,
 606                                 new_config_methods);
 607                         dev->info.config_methods = new_config_methods;
 608                 }
 609         }
 610 }
 611
 612
 613 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 614                                          size_t ies_len)
 615 {
 616         const u8 *pos, *end;
 617         u8 id, len;
 618
 619         wpabuf_free(dev->info.vendor_elems);
 620         dev->info.vendor_elems = NULL;
 621
 622         end = ies + ies_len;
 623
 624         for (pos = ies; pos + 1 < end; pos += len) {
 625                 id = *pos++;
 626                 len = *pos++;
 627
 628                 if (pos + len > end)
 629                         break;
 630
 631                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 632                         continue;
 633
 634                 if (len >= 4) {
 635                         u32 type = WPA_GET_BE32(pos);
 636
 637                         if (type == WPA_IE_VENDOR_TYPE ||
 638                             type == WMM_IE_VENDOR_TYPE ||
 639                             type == WPS_IE_VENDOR_TYPE ||
 640                             type == P2P_IE_VENDOR_TYPE ||
 641                             type == WFD_IE_VENDOR_TYPE)
 642                                 continue;
 643                 }
 644
 645                 /* Unknown vendor element - make raw IE data available */
 646                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 647                         break;
 648                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 649         }
 650 }
 651
 652
 653 /**
 654  * p2p_add_device - Add peer entries based on scan results or P2P frames
 655  * @p2p: P2P module context from p2p_init()
 656  * @addr: Source address of Beacon or Probe Response frame (may be either
 657  *      P2P Device Address or P2P Interface Address)
 658  * @level: Signal level (signal strength of the received frame from the peer)
 659  * @freq: Frequency on which the Beacon or Probe Response frame was received
 660  * @rx_time: Time when the result was received
 661  * @ies: IEs from the Beacon or Probe Response frame
 662  * @ies_len: Length of ies buffer in octets
 663  * @scan_res: Whether this was based on scan results
 664  * Returns: 0 on success, -1 on failure
 665  *
 666  * If the scan result is for a GO, the clients in the group will also be added
 667  * to the peer table. This function can also be used with some other frames
 668  * like Provision Discovery Request that contains P2P Capability and P2P Device
 669  * Info attributes.
 670  */
 671 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 672                    struct os_reltime *rx_time, int level, const u8 *ies,
 673                    size_t ies_len, int scan_res)
 674 {
 675         struct p2p_device *dev;
 676         struct p2p_message msg;
 677         const u8 *p2p_dev_addr;
 678         int i;
 679         struct os_reltime time_now;
 680
 681         os_memset(&msg, 0, sizeof(msg));
 682         if (p2p_parse_ies(ies, ies_len, &msg)) {
 683                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 684                 p2p_parse_free(&msg);
 685                 return -1;
 686         }
 687
 688         if (msg.p2p_device_addr)
 689                 p2p_dev_addr = msg.p2p_device_addr;
 690         else if (msg.device_id)
 691                 p2p_dev_addr = msg.device_id;
 692         else {
 693                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 694                 p2p_parse_free(&msg);
 695                 return -1;
 696         }
 697
 698         if (!is_zero_ether_addr(p2p->peer_filter) &&
 699             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 700                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 701                         " due to peer filter", MAC2STR(p2p_dev_addr));
 702                 p2p_parse_free(&msg);
 703                 return 0;
 704         }
 705
 706         dev = p2p_create_device(p2p, p2p_dev_addr);
 707         if (dev == NULL) {
 708                 p2p_parse_free(&msg);
 709                 return -1;
 710         }
 711
 712         if (rx_time == NULL) {
 713                 os_get_reltime(&time_now);
 714                 rx_time = &time_now;
 715         }
 716
 717         /*
 718          * Update the device entry only if the new peer
 719          * entry is newer than the one previously stored.
 720          */
 721         if (dev->last_seen.sec > 0 &&
 722             os_reltime_before(rx_time, &dev->last_seen)) {
 723                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 724                         (unsigned int) rx_time->sec,
 725                         (unsigned int) rx_time->usec,
 726                         (unsigned int) dev->last_seen.sec,
 727                         (unsigned int) dev->last_seen.usec);
 728                 p2p_parse_free(&msg);
 729                 return -1;
 730         }
 731
 732         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 733
 734         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 735
 736         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 737                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 738         if (msg.ssid &&
 739             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 740              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 741              != 0)) {
 742                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 743                 dev->oper_ssid_len = msg.ssid[1];
 744         }
 745
 746         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 747             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 748                 int ds_freq;
 749                 if (*msg.ds_params == 14)
 750                         ds_freq = 2484;
 751                 else
 752                         ds_freq = 2407 + *msg.ds_params * 5;
 753                 if (freq != ds_freq) {
 754                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 755                                 freq, ds_freq);
 756                         freq = ds_freq;
 757                 }
 758         }
 759
 760         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 761                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 762                         MACSTR " %d -> %d MHz (DS param %d)",
 763                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 764                         freq, msg.ds_params ? *msg.ds_params : -1);
 765         }
 766         if (scan_res) {
 767                 dev->listen_freq = freq;
 768                 if (msg.group_info)
 769                         dev->oper_freq = freq;
 770         }
 771         dev->info.level = level;
 772
 773         p2p_copy_wps_info(p2p, dev, 0, &msg);
 774
 775         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 776                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 777                 dev->info.wps_vendor_ext[i] = NULL;
 778         }
 779
 780         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 781                 if (msg.wps_vendor_ext[i] == NULL)
 782                         break;
 783                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 784                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 785                 if (dev->info.wps_vendor_ext[i] == NULL)
 786                         break;
 787         }
 788
 789         if (msg.wfd_subelems) {
 790                 wpabuf_free(dev->info.wfd_subelems);
 791                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 792         }
 793
 794         if (scan_res) {
 795                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 796                                       msg.group_info, msg.group_info_len);
 797         }
 798
 799         p2p_parse_free(&msg);
 800
 801         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 802
 803         if (dev->flags & P2P_DEV_REPORTED)
 804                 return 0;
 805
 806         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 807                 freq, (unsigned int) rx_time->sec,
 808                 (unsigned int) rx_time->usec);
 809         if (dev->flags & P2P_DEV_USER_REJECTED) {
 810                 p2p_dbg(p2p, "Do not report rejected device");
 811                 return 0;
 812         }
 813
 814         if (dev->info.config_methods == 0 &&
 815             (freq == 2412 || freq == 2437 || freq == 2462)) {
 816                 /*
 817                  * If we have only seen a Beacon frame from a GO, we do not yet
 818                  * know what WPS config methods it supports. Since some
 819                  * applications use config_methods value from P2P-DEVICE-FOUND
 820                  * events, postpone reporting this peer until we've fully
 821                  * discovered its capabilities.
 822                  *
 823                  * At least for now, do this only if the peer was detected on
 824                  * one of the social channels since that peer can be easily be
 825                  * found again and there are no limitations of having to use
 826                  * passive scan on this channels, so this can be done through
 827                  * Probe Response frame that includes the config_methods
 828                  * information.
 829                  */
 830                 p2p_dbg(p2p, "Do not report peer " MACSTR
 831                         " with unknown config methods", MAC2STR(addr));
 832                 return 0;
 833         }
 834
 835         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 836                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 837         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 838
 839         return 0;
 840 }
 841
 842
 843 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 844 {
 845         int i;
 846
 847         if (p2p->go_neg_peer == dev) {
 848                 /*
 849                  * If GO Negotiation is in progress, report that it has failed.
 850                  */
 851                 p2p_go_neg_failed(p2p, dev, -1);
 852                 p2p->go_neg_peer = NULL;
 853         }
 854         if (p2p->invite_peer == dev)
 855                 p2p->invite_peer = NULL;
 856         if (p2p->sd_peer == dev)
 857                 p2p->sd_peer = NULL;
 858         if (p2p->pending_client_disc_go == dev)
 859                 p2p->pending_client_disc_go = NULL;
 860
 861         /* dev_lost() device, but only if it was previously dev_found() */
 862         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 863                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 864                                    dev->info.p2p_device_addr);
 865
 866         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 867                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 868                 dev->info.wps_vendor_ext[i] = NULL;
 869         }
 870
 871         wpabuf_free(dev->info.wfd_subelems);
 872         wpabuf_free(dev->info.vendor_elems);
 873         wpabuf_free(dev->go_neg_conf);
 874
 875         os_free(dev);
 876 }
 877
 878
 879 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 880 {
 881         struct p2p_channels *c;
 882         struct p2p_reg_class *cla;
 883         size_t cl, ch;
 884         int found = 0;
 885         u8 reg_class;
 886         u8 channel;
 887         int freq;
 888
 889         c = &p2p->cfg->channels;
 890         for (cl = 0; cl < c->reg_classes; cl++) {
 891                 cla = &c->reg_class[cl];
 892                 if (cla->reg_class != p2p->last_prog_scan_class)
 893                         continue;
 894                 for (ch = 0; ch < cla->channels; ch++) {
 895                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 896                                 found = 1;
 897                                 break;
 898                         }
 899                 }
 900                 if (found)
 901                         break;
 902         }
 903
 904         if (!found) {
 905                 /* Start from beginning */
 906                 reg_class = c->reg_class[0].reg_class;
 907                 channel = c->reg_class[0].channel[0];
 908         } else {
 909                 /* Pick the next channel */
 910                 ch++;
 911                 if (ch == cla->channels) {
 912                         cl++;
 913                         if (cl == c->reg_classes)
 914                                 cl = 0;
 915                         ch = 0;
 916                 }
 917                 reg_class = c->reg_class[cl].reg_class;
 918                 channel = c->reg_class[cl].channel[ch];
 919         }
 920
 921         freq = p2p_channel_to_freq(reg_class, channel);
 922         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 923                 reg_class, channel, freq);
 924         p2p->last_prog_scan_class = reg_class;
 925         p2p->last_prog_scan_chan = channel;
 926
 927         if (freq == 2412 || freq == 2437 || freq == 2462)
 928                 return 0; /* No need to add social channels */
 929         return freq;
 930 }
 931
 932
 933 static void p2p_search(struct p2p_data *p2p)
 934 {
 935         int freq = 0;
 936         enum p2p_scan_type type;
 937         u16 pw_id = DEV_PW_DEFAULT;
 938         int res;
 939
 940         if (p2p->drv_in_listen) {
 941                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 942                 return;
 943         }
 944         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 945
 946         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 947             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 948                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 949                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 950         } else {
 951                 type = P2P_SCAN_SOCIAL;
 952                 p2p_dbg(p2p, "Starting search");
 953         }
 954
 955         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 956                                  p2p->num_req_dev_types, p2p->req_dev_types,
 957                                  p2p->find_dev_id, pw_id);
 958         if (res < 0) {
 959                 p2p_dbg(p2p, "Scan request failed");
 960                 p2p_continue_find(p2p);
 961         } else {
 962                 p2p_dbg(p2p, "Running p2p_scan");
 963                 p2p->p2p_scan_running = 1;
 964                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 965                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 966                                        p2p, NULL);
 967         }
 968 }
 969
 970
 971 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 972 {
 973         struct p2p_data *p2p = eloop_ctx;
 974         p2p_dbg(p2p, "Find timeout -> stop");
 975         p2p_stop_find(p2p);
 976 }
 977
 978
 979 static int p2p_run_after_scan(struct p2p_data *p2p)
 980 {
 981         struct p2p_device *dev;
 982         enum p2p_after_scan op;
 983
 984         if (p2p->after_scan_tx) {
 985                 p2p->after_scan_tx_in_progress = 1;
 986                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
 987                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 988                                       p2p->after_scan_tx->freq,
 989                                       p2p->after_scan_tx->dst,
 990                                       p2p->after_scan_tx->src,
 991                                       p2p->after_scan_tx->bssid,
 992                                       (u8 *) (p2p->after_scan_tx + 1),
 993                                       p2p->after_scan_tx->len,
 994                                       p2p->after_scan_tx->wait_time);
 995                 os_free(p2p->after_scan_tx);
 996                 p2p->after_scan_tx = NULL;
 997                 return 1;
 998         }
 999
1000         op = p2p->start_after_scan;
1001         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1002         switch (op) {
1003         case P2P_AFTER_SCAN_NOTHING:
1004                 break;
1005         case P2P_AFTER_SCAN_LISTEN:
1006                 p2p_dbg(p2p, "Start previously requested Listen state");
1007                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1008                            p2p->pending_listen_usec / 1000);
1009                 return 1;
1010         case P2P_AFTER_SCAN_CONNECT:
1011                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1012                         MAC2STR(p2p->after_scan_peer));
1013                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1014                 if (dev == NULL) {
1015                         p2p_dbg(p2p, "Peer not known anymore");
1016                         break;
1017                 }
1018                 p2p_connect_send(p2p, dev);
1019                 return 1;
1020         }
1021
1022         return 0;
1023 }
1024
1025
1026 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1027 {
1028         struct p2p_data *p2p = eloop_ctx;
1029         int running;
1030         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1031         running = p2p->p2p_scan_running;
1032         /* Make sure we recover from missed scan results callback */
1033         p2p->p2p_scan_running = 0;
1034
1035         if (running)
1036                 p2p_run_after_scan(p2p);
1037 }
1038
1039
1040 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1041 {
1042         p2p->num_req_dev_types = 0;
1043         os_free(p2p->req_dev_types);
1044         p2p->req_dev_types = NULL;
1045 }
1046
1047
1048 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1049              enum p2p_discovery_type type,
1050              unsigned int num_req_dev_types, const u8 *req_dev_types,
1051              const u8 *dev_id, unsigned int search_delay)
1052 {
1053         int res;
1054
1055         p2p_dbg(p2p, "Starting find (type=%d)", type);
1056         os_get_reltime(&p2p->find_start);
1057         if (p2p->p2p_scan_running) {
1058                 p2p_dbg(p2p, "p2p_scan is already running");
1059         }
1060
1061         p2p_free_req_dev_types(p2p);
1062         if (req_dev_types && num_req_dev_types) {
1063                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1064                                                WPS_DEV_TYPE_LEN);
1065                 if (p2p->req_dev_types == NULL)
1066                         return -1;
1067                 os_memcpy(p2p->req_dev_types, req_dev_types,
1068                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1069                 p2p->num_req_dev_types = num_req_dev_types;
1070         }
1071
1072         if (dev_id) {
1073                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1074                 p2p->find_dev_id = p2p->find_dev_id_buf;
1075         } else
1076                 p2p->find_dev_id = NULL;
1077
1078         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1079         p2p_clear_timeout(p2p);
1080         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1081         p2p->find_type = type;
1082         p2p_device_clear_reported(p2p);
1083         p2p_set_state(p2p, P2P_SEARCH);
1084         p2p->search_delay = search_delay;
1085         p2p->in_search_delay = 0;
1086         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1087         p2p->last_p2p_find_timeout = timeout;
1088         if (timeout)
1089                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1090                                        p2p, NULL);
1091         switch (type) {
1092         case P2P_FIND_START_WITH_FULL:
1093         case P2P_FIND_PROGRESSIVE:
1094                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1095                                          p2p->num_req_dev_types,
1096                                          p2p->req_dev_types, dev_id,
1097                                          DEV_PW_DEFAULT);
1098                 break;
1099         case P2P_FIND_ONLY_SOCIAL:
1100                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1101                                          p2p->num_req_dev_types,
1102                                          p2p->req_dev_types, dev_id,
1103                                          DEV_PW_DEFAULT);
1104                 break;
1105         default:
1106                 return -1;
1107         }
1108
1109         if (res == 0) {
1110                 p2p_dbg(p2p, "Running p2p_scan");
1111                 p2p->p2p_scan_running = 1;
1112                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1113                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1114                                        p2p, NULL);
1115         } else if (p2p->p2p_scan_running) {
1116                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1117                 /* wait for the previous p2p_scan to complete */
1118                 res = 0; /* do not report failure */
1119         } else {
1120                 p2p_dbg(p2p, "Failed to start p2p_scan");
1121                 p2p_set_state(p2p, P2P_IDLE);
1122                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1123         }
1124
1125         return res;
1126 }
1127
1128
1129 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1130 {
1131         p2p_dbg(p2p, "Stopping find");
1132         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1133         p2p_clear_timeout(p2p);
1134         if (p2p->state == P2P_SEARCH)
1135                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1136         p2p_set_state(p2p, P2P_IDLE);
1137         p2p_free_req_dev_types(p2p);
1138         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1139         if (p2p->go_neg_peer)
1140                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1141         p2p->go_neg_peer = NULL;
1142         p2p->sd_peer = NULL;
1143         p2p->invite_peer = NULL;
1144         p2p_stop_listen_for_freq(p2p, freq);
1145 }
1146
1147
1148 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1149 {
1150         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1151                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1152                 return;
1153         }
1154         if (p2p->in_listen) {
1155                 p2p->in_listen = 0;
1156                 p2p_clear_timeout(p2p);
1157         }
1158         if (p2p->drv_in_listen) {
1159                 /*
1160                  * The driver may not deliver callback to p2p_listen_end()
1161                  * when the operation gets canceled, so clear the internal
1162                  * variable that is tracking driver state.
1163                  */
1164                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1165                 p2p->drv_in_listen = 0;
1166         }
1167         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1168 }
1169
1170
1171 void p2p_stop_listen(struct p2p_data *p2p)
1172 {
1173         if (p2p->state != P2P_LISTEN_ONLY) {
1174                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1175                 return;
1176         }
1177
1178         p2p_stop_listen_for_freq(p2p, 0);
1179         p2p_set_state(p2p, P2P_IDLE);
1180 }
1181
1182
1183 void p2p_stop_find(struct p2p_data *p2p)
1184 {
1185         p2p->pending_listen_freq = 0;
1186         p2p_stop_find_for_freq(p2p, 0);
1187 }
1188
1189
1190 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1191                                     unsigned int force_freq,
1192                                     unsigned int pref_freq, int go)
1193 {
1194         u8 op_class, op_channel;
1195         unsigned int freq = force_freq ? force_freq : pref_freq;
1196
1197         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1198                 force_freq, pref_freq, go);
1199         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1200                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1201                 return -1;
1202         }
1203
1204         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1205             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1206                                           op_channel))) {
1207                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1208                         freq, op_class, op_channel);
1209                 return -1;
1210         }
1211
1212         p2p->op_reg_class = op_class;
1213         p2p->op_channel = op_channel;
1214
1215         if (force_freq) {
1216                 p2p->channels.reg_classes = 1;
1217                 p2p->channels.reg_class[0].channels = 1;
1218                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1219                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1220         } else {
1221                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1222                           sizeof(struct p2p_channels));
1223         }
1224
1225         return 0;
1226 }
1227
1228
1229 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1230 {
1231         u8 op_class, op_channel;
1232         const int op_classes_5ghz[] = { 124, 115, 0 };
1233         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1234         const int op_classes_vht[] = { 128, 0 };
1235
1236         p2p_dbg(p2p, "Prepare channel best");
1237
1238         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1239             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1240             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1241             == 0) {
1242                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1243                 p2p->op_reg_class = op_class;
1244                 p2p->op_channel = op_channel;
1245         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1246                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1247                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1248                    == 0) {
1249                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1250                 p2p->op_reg_class = op_class;
1251                 p2p->op_channel = op_channel;
1252         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1253                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1254                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1255                                        &op_channel) == 0) {
1256                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1257                 p2p->op_reg_class = op_class;
1258                 p2p->op_channel = op_channel;
1259         } else if (p2p->cfg->num_pref_chan > 0 &&
1260                    p2p_channels_includes(&p2p->cfg->channels,
1261                                          p2p->cfg->pref_chan[0].op_class,
1262                                          p2p->cfg->pref_chan[0].chan)) {
1263                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1264                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1265                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1266         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1267                                       &p2p->op_reg_class, &p2p->op_channel) ==
1268                    0) {
1269                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1270                         p2p->op_reg_class, p2p->op_channel);
1271         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1272                                       &p2p->op_reg_class, &p2p->op_channel) ==
1273                    0) {
1274                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1275                         p2p->op_reg_class, p2p->op_channel);
1276         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1277                                       &p2p->op_reg_class, &p2p->op_channel) ==
1278                    0) {
1279                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1280                         p2p->op_reg_class, p2p->op_channel);
1281         } else if (p2p_channels_includes(&p2p->cfg->channels,
1282                                          p2p->cfg->op_reg_class,
1283                                          p2p->cfg->op_channel)) {
1284                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1285                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1286                 p2p->op_channel = p2p->cfg->op_channel;
1287         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1288                                              &p2p->op_reg_class,
1289                                              &p2p->op_channel) == 0) {
1290                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1291                         p2p->op_reg_class, p2p->op_channel);
1292         } else {
1293                 /* Select any random available channel from the first available
1294                  * operating class */
1295                 p2p_channel_select(&p2p->cfg->channels, NULL,
1296                                    &p2p->op_reg_class,
1297                                    &p2p->op_channel);
1298                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1299                         p2p->op_channel, p2p->op_reg_class);
1300         }
1301
1302         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1303                   sizeof(struct p2p_channels));
1304 }
1305
1306
1307 /**
1308  * p2p_prepare_channel - Select operating channel for GO Negotiation
1309  * @p2p: P2P module context from p2p_init()
1310  * @dev: Selected peer device
1311  * @force_freq: Forced frequency in MHz or 0 if not forced
1312  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1313  * @go: Whether the local end will be forced to be GO
1314  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1315  *
1316  * This function is used to do initial operating channel selection for GO
1317  * Negotiation prior to having received peer information. The selected channel
1318  * may be further optimized in p2p_reselect_channel() once the peer information
1319  * is available.
1320  */
1321 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1322                         unsigned int force_freq, unsigned int pref_freq, int go)
1323 {
1324         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1325                 force_freq, pref_freq, go);
1326         if (force_freq || pref_freq) {
1327                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1328                     0)
1329                         return -1;
1330         } else {
1331                 p2p_prepare_channel_best(p2p);
1332         }
1333         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1334         if (go)
1335                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1336         else if (!force_freq)
1337                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1338                                    &p2p->channels);
1339         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1340
1341         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1342                 p2p->op_reg_class, p2p->op_channel,
1343                 force_freq ? " (forced)" : "");
1344
1345         if (force_freq)
1346                 dev->flags |= P2P_DEV_FORCE_FREQ;
1347         else
1348                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1349
1350         return 0;
1351 }
1352
1353
1354 static void p2p_set_dev_persistent(struct p2p_device *dev,
1355                                    int persistent_group)
1356 {
1357         switch (persistent_group) {
1358         case 0:
1359                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1360                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1361                 break;
1362         case 1:
1363                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1364                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1365                 break;
1366         case 2:
1367                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1368                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1369                 break;
1370         }
1371 }
1372
1373
1374 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1375                 enum p2p_wps_method wps_method,
1376                 int go_intent, const u8 *own_interface_addr,
1377                 unsigned int force_freq, int persistent_group,
1378                 const u8 *force_ssid, size_t force_ssid_len,
1379                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1380 {
1381         struct p2p_device *dev;
1382
1383         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1384                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1385                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1386                 "oob_pw_id=%u",
1387                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1388                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1389
1390         dev = p2p_get_device(p2p, peer_addr);
1391         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1392                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1393                         MAC2STR(peer_addr));
1394                 return -1;
1395         }
1396
1397         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1398                                 go_intent == 15) < 0)
1399                 return -1;
1400
1401         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1402                 if (!(dev->info.dev_capab &
1403                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1404                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1405                                 " that is in a group and is not discoverable",
1406                                 MAC2STR(peer_addr));
1407                         return -1;
1408                 }
1409                 if (dev->oper_freq <= 0) {
1410                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1411                                 " with incomplete information",
1412                                 MAC2STR(peer_addr));
1413                         return -1;
1414                 }
1415
1416                 /*
1417                  * First, try to connect directly. If the peer does not
1418                  * acknowledge frames, assume it is sleeping and use device
1419                  * discoverability via the GO at that point.
1420                  */
1421         }
1422
1423         p2p->ssid_set = 0;
1424         if (force_ssid) {
1425                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1426                                   force_ssid, force_ssid_len);
1427                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1428                 p2p->ssid_len = force_ssid_len;
1429                 p2p->ssid_set = 1;
1430         }
1431
1432         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1433         dev->flags &= ~P2P_DEV_USER_REJECTED;
1434         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1435         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1436         if (pd_before_go_neg)
1437                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1438         else {
1439                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1440                 /*
1441                  * Assign dialog token and tie breaker here to use the same
1442                  * values in each retry within the same GO Negotiation exchange.
1443                  */
1444                 dev->dialog_token++;
1445                 if (dev->dialog_token == 0)
1446                         dev->dialog_token = 1;
1447                 dev->tie_breaker = p2p->next_tie_breaker;
1448                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1449         }
1450         dev->connect_reqs = 0;
1451         dev->go_neg_req_sent = 0;
1452         dev->go_state = UNKNOWN_GO;
1453         p2p_set_dev_persistent(dev, persistent_group);
1454         p2p->go_intent = go_intent;
1455         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1456
1457         if (p2p->state != P2P_IDLE)
1458                 p2p_stop_find(p2p);
1459
1460         if (p2p->after_scan_tx) {
1461                 /*
1462                  * We need to drop the pending frame to avoid issues with the
1463                  * new GO Negotiation, e.g., when the pending frame was from a
1464                  * previous attempt at starting a GO Negotiation.
1465                  */
1466                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1467                 os_free(p2p->after_scan_tx);
1468                 p2p->after_scan_tx = NULL;
1469         }
1470
1471         dev->wps_method = wps_method;
1472         dev->oob_pw_id = oob_pw_id;
1473         dev->status = P2P_SC_SUCCESS;
1474
1475         if (p2p->p2p_scan_running) {
1476                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1477                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1478                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1479                 return 0;
1480         }
1481         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1482
1483         return p2p_connect_send(p2p, dev);
1484 }
1485
1486
1487 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1488                   enum p2p_wps_method wps_method,
1489                   int go_intent, const u8 *own_interface_addr,
1490                   unsigned int force_freq, int persistent_group,
1491                   const u8 *force_ssid, size_t force_ssid_len,
1492                   unsigned int pref_freq, u16 oob_pw_id)
1493 {
1494         struct p2p_device *dev;
1495
1496         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1497                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1498                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1499                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1500                 wps_method, persistent_group, oob_pw_id);
1501
1502         dev = p2p_get_device(p2p, peer_addr);
1503         if (dev == NULL) {
1504                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1505                         MAC2STR(peer_addr));
1506                 return -1;
1507         }
1508
1509         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1510                                 15) < 0)
1511                 return -1;
1512
1513         p2p->ssid_set = 0;
1514         if (force_ssid) {
1515                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1516                                   force_ssid, force_ssid_len);
1517                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1518                 p2p->ssid_len = force_ssid_len;
1519                 p2p->ssid_set = 1;
1520         }
1521
1522         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1523         dev->flags &= ~P2P_DEV_USER_REJECTED;
1524         dev->go_neg_req_sent = 0;
1525         dev->go_state = UNKNOWN_GO;
1526         p2p_set_dev_persistent(dev, persistent_group);
1527         p2p->go_intent = go_intent;
1528         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1529
1530         dev->wps_method = wps_method;
1531         dev->oob_pw_id = oob_pw_id;
1532         dev->status = P2P_SC_SUCCESS;
1533
1534         return 0;
1535 }
1536
1537
1538 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1539                       struct p2p_device *dev, struct p2p_message *msg)
1540 {
1541         os_get_reltime(&dev->last_seen);
1542
1543         p2p_copy_wps_info(p2p, dev, 0, msg);
1544
1545         if (msg->listen_channel) {
1546                 int freq;
1547                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1548                                            msg->listen_channel[4]);
1549                 if (freq < 0) {
1550                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1551                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1552                                 msg->listen_channel[0],
1553                                 msg->listen_channel[1],
1554                                 msg->listen_channel[2],
1555                                 msg->listen_channel[3],
1556                                 msg->listen_channel[4]);
1557                 } else {
1558                         p2p_dbg(p2p, "Update peer " MACSTR
1559                                 " Listen channel: %u -> %u MHz",
1560                                 MAC2STR(dev->info.p2p_device_addr),
1561                                 dev->listen_freq, freq);
1562                         dev->listen_freq = freq;
1563                 }
1564         }
1565
1566         if (msg->wfd_subelems) {
1567                 wpabuf_free(dev->info.wfd_subelems);
1568                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1569         }
1570
1571         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1572                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1573                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1574         } else {
1575                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1576                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1577                         "listen_freq=%d",
1578                         MAC2STR(dev->info.p2p_device_addr),
1579                         dev->info.dev_capab, dev->info.group_capab,
1580                         dev->info.device_name, dev->listen_freq);
1581         }
1582
1583         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1584
1585         if (dev->flags & P2P_DEV_USER_REJECTED) {
1586                 p2p_dbg(p2p, "Do not report rejected device");
1587                 return;
1588         }
1589
1590         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1591                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1592         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1593 }
1594
1595
1596 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1597 {
1598         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1599         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1600         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1601                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1602         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1603 }
1604
1605
1606 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1607 {
1608         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1609         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1610         return 0;
1611 }
1612
1613
1614 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1615 {
1616         struct p2p_go_neg_results res;
1617         int go = peer->go_state == LOCAL_GO;
1618         struct p2p_channels intersection;
1619         int freqs;
1620         size_t i, j;
1621
1622         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1623                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1624
1625         os_memset(&res, 0, sizeof(res));
1626         res.role_go = go;
1627         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1628         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1629         res.wps_method = peer->wps_method;
1630         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1631                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1632                         res.persistent_group = 2;
1633                 else
1634                         res.persistent_group = 1;
1635         }
1636
1637         if (go) {
1638                 /* Setup AP mode for WPS provisioning */
1639                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1640                                                p2p->op_channel);
1641                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1642                 res.ssid_len = p2p->ssid_len;
1643                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1644         } else {
1645                 res.freq = peer->oper_freq;
1646                 if (p2p->ssid_len) {
1647                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1648                         res.ssid_len = p2p->ssid_len;
1649                 }
1650         }
1651
1652         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1653         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1654         p2p_channels_intersect(&p2p->channels, &peer->channels,
1655                                &intersection);
1656         if (go) {
1657                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1658                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1659                                   &intersection);
1660         }
1661         freqs = 0;
1662         for (i = 0; i < intersection.reg_classes; i++) {
1663                 struct p2p_reg_class *c = &intersection.reg_class[i];
1664                 if (freqs + 1 == P2P_MAX_CHANNELS)
1665                         break;
1666                 for (j = 0; j < c->channels; j++) {
1667                         int freq;
1668                         if (freqs + 1 == P2P_MAX_CHANNELS)
1669                                 break;
1670                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1671                         if (freq < 0)
1672                                 continue;
1673                         res.freq_list[freqs++] = freq;
1674                 }
1675         }
1676
1677         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1678
1679         p2p_clear_timeout(p2p);
1680         p2p->ssid_set = 0;
1681         peer->go_neg_req_sent = 0;
1682         peer->wps_method = WPS_NOT_READY;
1683         peer->oob_pw_id = 0;
1684         wpabuf_free(peer->go_neg_conf);
1685         peer->go_neg_conf = NULL;
1686
1687         p2p_set_state(p2p, P2P_PROVISIONING);
1688         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1689 }
1690
1691
1692 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1693                               const u8 *data, size_t len, int rx_freq)
1694 {
1695         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1696         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1697
1698         if (len < 1)
1699                 return;
1700
1701         switch (data[0]) {
1702         case P2P_GO_NEG_REQ:
1703                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1704                 break;
1705         case P2P_GO_NEG_RESP:
1706                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1707                 break;
1708         case P2P_GO_NEG_CONF:
1709                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1710                 break;
1711         case P2P_INVITATION_REQ:
1712                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1713                                            rx_freq);
1714                 break;
1715         case P2P_INVITATION_RESP:
1716                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1717                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1718                 break;
1719         case P2P_PROV_DISC_REQ:
1720                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1721                 break;
1722         case P2P_PROV_DISC_RESP:
1723                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1724                 break;
1725         case P2P_DEV_DISC_REQ:
1726                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1727                 break;
1728         case P2P_DEV_DISC_RESP:
1729                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1730                 break;
1731         default:
1732                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1733                         data[0]);
1734                 break;
1735         }
1736 }
1737
1738
1739 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1740                                  const u8 *sa, const u8 *bssid, const u8 *data,
1741                                  size_t len, int freq)
1742 {
1743         if (len < 1)
1744                 return;
1745
1746         switch (data[0]) {
1747         case WLAN_PA_VENDOR_SPECIFIC:
1748                 data++;
1749                 len--;
1750                 if (len < 4)
1751                         return;
1752                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1753                         return;
1754
1755                 data += 4;
1756                 len -= 4;
1757
1758                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1759                 break;
1760         case WLAN_PA_GAS_INITIAL_REQ:
1761                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1762                 break;
1763         case WLAN_PA_GAS_INITIAL_RESP:
1764                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1765                 break;
1766         case WLAN_PA_GAS_COMEBACK_REQ:
1767                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1768                 break;
1769         case WLAN_PA_GAS_COMEBACK_RESP:
1770                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1771                 break;
1772         }
1773 }
1774
1775
1776 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1777                    const u8 *bssid, u8 category,
1778                    const u8 *data, size_t len, int freq)
1779 {
1780         if (category == WLAN_ACTION_PUBLIC) {
1781                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1782                 return;
1783         }
1784
1785         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1786                 return;
1787
1788         if (len < 4)
1789                 return;
1790
1791         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1792                 return;
1793         data += 4;
1794         len -= 4;
1795
1796         /* P2P action frame */
1797         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1798         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1799
1800         if (len < 1)
1801                 return;
1802         switch (data[0]) {
1803         case P2P_NOA:
1804                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1805                 /* TODO */
1806                 break;
1807         case P2P_PRESENCE_REQ:
1808                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1809                 break;
1810         case P2P_PRESENCE_RESP:
1811                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1812                 break;
1813         case P2P_GO_DISC_REQ:
1814                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1815                 break;
1816         default:
1817                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1818                 break;
1819         }
1820 }
1821
1822
1823 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1824 {
1825         struct p2p_data *p2p = eloop_ctx;
1826         if (p2p->go_neg_peer == NULL)
1827                 return;
1828         if (p2p->pending_listen_freq) {
1829                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1830                 p2p->pending_listen_freq = 0;
1831         }
1832         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1833         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1834         /*
1835          * Set new timeout to make sure a previously set one does not expire
1836          * too quickly while waiting for the GO Negotiation to complete.
1837          */
1838         p2p_set_timeout(p2p, 0, 500000);
1839         p2p_connect_send(p2p, p2p->go_neg_peer);
1840 }
1841
1842
1843 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1844 {
1845         struct p2p_data *p2p = eloop_ctx;
1846         if (p2p->invite_peer == NULL)
1847                 return;
1848         if (p2p->pending_listen_freq) {
1849                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1850                 p2p->pending_listen_freq = 0;
1851         }
1852         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1853         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1854                         p2p->invite_dev_pw_id);
1855 }
1856
1857
1858 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1859                                        const u8 *ie, size_t ie_len)
1860 {
1861         struct p2p_message msg;
1862         struct p2p_device *dev;
1863
1864         os_memset(&msg, 0, sizeof(msg));
1865         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1866         {
1867                 p2p_parse_free(&msg);
1868                 return; /* not a P2P probe */
1869         }
1870
1871         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1872             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1873             != 0) {
1874                 /* The Probe Request is not part of P2P Device Discovery. It is
1875                  * not known whether the source address of the frame is the P2P
1876                  * Device Address or P2P Interface Address. Do not add a new
1877                  * peer entry based on this frames.
1878                  */
1879                 p2p_parse_free(&msg);
1880                 return;
1881         }
1882
1883         dev = p2p_get_device(p2p, addr);
1884         if (dev) {
1885                 if (dev->country[0] == 0 && msg.listen_channel)
1886                         os_memcpy(dev->country, msg.listen_channel, 3);
1887                 os_get_reltime(&dev->last_seen);
1888                 p2p_parse_free(&msg);
1889                 return; /* already known */
1890         }
1891
1892         dev = p2p_create_device(p2p, addr);
1893         if (dev == NULL) {
1894                 p2p_parse_free(&msg);
1895                 return;
1896         }
1897
1898         os_get_reltime(&dev->last_seen);
1899         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1900
1901         if (msg.listen_channel) {
1902                 os_memcpy(dev->country, msg.listen_channel, 3);
1903                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1904                                                        msg.listen_channel[4]);
1905         }
1906
1907         p2p_copy_wps_info(p2p, dev, 1, &msg);
1908
1909         if (msg.wfd_subelems) {
1910                 wpabuf_free(dev->info.wfd_subelems);
1911                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1912         }
1913
1914         p2p_parse_free(&msg);
1915
1916         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1917                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1918                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1919                 dev->info.group_capab, dev->info.device_name,
1920                 dev->listen_freq);
1921 }
1922
1923
1924 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1925                                                 const u8 *addr,
1926                                                 struct p2p_message *msg)
1927 {
1928         struct p2p_device *dev;
1929
1930         dev = p2p_get_device(p2p, addr);
1931         if (dev) {
1932                 os_get_reltime(&dev->last_seen);
1933                 return dev; /* already known */
1934         }
1935
1936         dev = p2p_create_device(p2p, addr);
1937         if (dev == NULL)
1938                 return NULL;
1939
1940         p2p_add_dev_info(p2p, addr, dev, msg);
1941
1942         return dev;
1943 }
1944
1945
1946 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1947 {
1948         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1949                 return 1;
1950         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1951             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1952             WPA_GET_BE16(&req_dev_type[6]) == 0)
1953                 return 1; /* Category match with wildcard OUI/sub-category */
1954         return 0;
1955 }
1956
1957
1958 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1959                         size_t num_req_dev_type)
1960 {
1961         size_t i;
1962         for (i = 0; i < num_req_dev_type; i++) {
1963                 if (dev_type_match(dev_type, req_dev_type[i]))
1964                         return 1;
1965         }
1966         return 0;
1967 }
1968
1969
1970 /**
1971  * p2p_match_dev_type - Match local device type with requested type
1972  * @p2p: P2P module context from p2p_init()
1973  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1974  * Returns: 1 on match, 0 on mismatch
1975  *
1976  * This function can be used to match the Requested Device Type attribute in
1977  * WPS IE with the local device types for deciding whether to reply to a Probe
1978  * Request frame.
1979  */
1980 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1981 {
1982         struct wps_parse_attr attr;
1983         size_t i;
1984
1985         if (wps_parse_msg(wps, &attr))
1986                 return 1; /* assume no Requested Device Type attributes */
1987
1988         if (attr.num_req_dev_type == 0)
1989                 return 1; /* no Requested Device Type attributes -> match */
1990
1991         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1992                                 attr.num_req_dev_type))
1993                 return 1; /* Own Primary Device Type matches */
1994
1995         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1996                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1997                                         attr.req_dev_type,
1998                                         attr.num_req_dev_type))
1999                 return 1; /* Own Secondary Device Type matches */
2000
2001         /* No matching device type found */
2002         return 0;
2003 }
2004
2005
2006 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2007 {
2008         struct wpabuf *buf;
2009         u8 *len;
2010         int pw_id = -1;
2011         size_t extra = 0;
2012
2013 #ifdef CONFIG_WIFI_DISPLAY
2014         if (p2p->wfd_ie_probe_resp)
2015                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2016 #endif /* CONFIG_WIFI_DISPLAY */
2017
2018         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2019                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2020
2021         buf = wpabuf_alloc(1000 + extra);
2022         if (buf == NULL)
2023                 return NULL;
2024
2025         if (p2p->go_neg_peer) {
2026                 /* Advertise immediate availability of WPS credential */
2027                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2028         }
2029
2030         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2031                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2032                 wpabuf_free(buf);
2033                 return NULL;
2034         }
2035
2036 #ifdef CONFIG_WIFI_DISPLAY
2037         if (p2p->wfd_ie_probe_resp)
2038                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2039 #endif /* CONFIG_WIFI_DISPLAY */
2040
2041         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2042                 wpabuf_put_buf(buf,
2043                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2044
2045         /* P2P IE */
2046         len = p2p_buf_add_ie_hdr(buf);
2047         p2p_buf_add_capability(buf, p2p->dev_capab &
2048                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2049         if (p2p->ext_listen_interval)
2050                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2051                                               p2p->ext_listen_interval);
2052         p2p_buf_add_device_info(buf, p2p, NULL);
2053         p2p_buf_update_ie_hdr(buf, len);
2054
2055         return buf;
2056 }
2057
2058
2059 static enum p2p_probe_req_status
2060 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2061                 const u8 *bssid, const u8 *ie, size_t ie_len)
2062 {
2063         struct ieee802_11_elems elems;
2064         struct wpabuf *buf;
2065         struct ieee80211_mgmt *resp;
2066         struct p2p_message msg;
2067         struct wpabuf *ies;
2068
2069         if (!p2p->in_listen || !p2p->drv_in_listen) {
2070                 /* not in Listen state - ignore Probe Request */
2071                 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2072                         p2p->in_listen, p2p->drv_in_listen);
2073                 return P2P_PREQ_NOT_LISTEN;
2074         }
2075
2076         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2077             ParseFailed) {
2078                 /* Ignore invalid Probe Request frames */
2079                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2080                 return P2P_PREQ_MALFORMED;
2081         }
2082
2083         if (elems.p2p == NULL) {
2084                 /* not a P2P probe - ignore it */
2085                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2086                 return P2P_PREQ_NOT_P2P;
2087         }
2088
2089         if (dst && !is_broadcast_ether_addr(dst) &&
2090             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2091                 /* Not sent to the broadcast address or our P2P Device Address
2092                  */
2093                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2094                         MAC2STR(dst));
2095                 return P2P_PREQ_NOT_PROCESSED;
2096         }
2097
2098         if (bssid && !is_broadcast_ether_addr(bssid)) {
2099                 /* Not sent to the Wildcard BSSID */
2100                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2101                         MAC2STR(bssid));
2102                 return P2P_PREQ_NOT_PROCESSED;
2103         }
2104
2105         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2106             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2107             0) {
2108                 /* not using P2P Wildcard SSID - ignore */
2109                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2110                 return P2P_PREQ_NOT_PROCESSED;
2111         }
2112
2113         if (supp_rates_11b_only(&elems)) {
2114                 /* Indicates support for 11b rates only */
2115                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2116                 return P2P_PREQ_NOT_P2P;
2117         }
2118
2119         os_memset(&msg, 0, sizeof(msg));
2120         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2121                 /* Could not parse P2P attributes */
2122                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2123                 return P2P_PREQ_NOT_P2P;
2124         }
2125
2126         if (msg.device_id &&
2127             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2128                 /* Device ID did not match */
2129                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2130                         MAC2STR(msg.device_id));
2131                 p2p_parse_free(&msg);
2132                 return P2P_PREQ_NOT_PROCESSED;
2133         }
2134
2135         /* Check Requested Device Type match */
2136         if (msg.wps_attributes &&
2137             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2138                 /* No match with Requested Device Type */
2139                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2140                 p2p_parse_free(&msg);
2141                 return P2P_PREQ_NOT_PROCESSED;
2142         }
2143         p2p_parse_free(&msg);
2144
2145         if (!p2p->cfg->send_probe_resp) {
2146                 /* Response generated elsewhere */
2147                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2148                 return P2P_PREQ_NOT_PROCESSED;
2149         }
2150
2151         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2152
2153         /*
2154          * We do not really have a specific BSS that this frame is advertising,
2155          * so build a frame that has some information in valid format. This is
2156          * really only used for discovery purposes, not to learn exact BSS
2157          * parameters.
2158          */
2159         ies = p2p_build_probe_resp_ies(p2p);
2160         if (ies == NULL)
2161                 return P2P_PREQ_NOT_PROCESSED;
2162
2163         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2164         if (buf == NULL) {
2165                 wpabuf_free(ies);
2166                 return P2P_PREQ_NOT_PROCESSED;
2167         }
2168
2169         resp = NULL;
2170         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2171
2172         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2173                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2174         os_memcpy(resp->da, addr, ETH_ALEN);
2175         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2176         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2177         resp->u.probe_resp.beacon_int = host_to_le16(100);
2178         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2179         resp->u.probe_resp.capab_info =
2180                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2181                              WLAN_CAPABILITY_PRIVACY |
2182                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2183
2184         wpabuf_put_u8(buf, WLAN_EID_SSID);
2185         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2186         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2187
2188         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2189         wpabuf_put_u8(buf, 8);
2190         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2191         wpabuf_put_u8(buf, 90 / 5);
2192         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2193         wpabuf_put_u8(buf, 180 / 5);
2194         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2195         wpabuf_put_u8(buf, 360 / 5);
2196         wpabuf_put_u8(buf, 480 / 5);
2197         wpabuf_put_u8(buf, 540 / 5);
2198
2199         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2200         wpabuf_put_u8(buf, 1);
2201         wpabuf_put_u8(buf, p2p->cfg->channel);
2202
2203         wpabuf_put_buf(buf, ies);
2204         wpabuf_free(ies);
2205
2206         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2207
2208         wpabuf_free(buf);
2209
2210         return P2P_PREQ_NOT_PROCESSED;
2211 }
2212
2213
2214 enum p2p_probe_req_status
2215 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2216                  const u8 *bssid, const u8 *ie, size_t ie_len)
2217 {
2218         enum p2p_probe_req_status res;
2219
2220         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2221
2222         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2223
2224         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2225             p2p->go_neg_peer &&
2226             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2227             == 0 &&
2228             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2229                 /* Received a Probe Request from GO Negotiation peer */
2230                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2231                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2232                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2233                 return P2P_PREQ_PROCESSED;
2234         }
2235
2236         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2237             p2p->invite_peer &&
2238             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2239             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2240             == 0) {
2241                 /* Received a Probe Request from Invite peer */
2242                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2243                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2244                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2245                 return P2P_PREQ_PROCESSED;
2246         }
2247
2248         return res;
2249 }
2250
2251
2252 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2253                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2254 {
2255         struct wpabuf *tmp;
2256         u8 *lpos;
2257         size_t tmplen;
2258         int res;
2259         u8 group_capab;
2260
2261         if (p2p_ie == NULL)
2262                 return 0; /* WLAN AP is not a P2P manager */
2263
2264         /*
2265          * (Re)Association Request - P2P IE
2266          * P2P Capability attribute (shall be present)
2267          * P2P Interface attribute (present if concurrent device and
2268          *      P2P Management is enabled)
2269          */
2270         tmp = wpabuf_alloc(200);
2271         if (tmp == NULL)
2272                 return -1;
2273
2274         lpos = p2p_buf_add_ie_hdr(tmp);
2275         group_capab = 0;
2276         if (p2p->num_groups > 0) {
2277                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2278                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2279                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2280                     p2p->cross_connect)
2281                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2282         }
2283         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2284         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2285             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2286                 p2p_buf_add_p2p_interface(tmp, p2p);
2287         p2p_buf_update_ie_hdr(tmp, lpos);
2288
2289         tmplen = wpabuf_len(tmp);
2290         if (tmplen > len)
2291                 res = -1;
2292         else {
2293                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2294                 res = tmplen;
2295         }
2296         wpabuf_free(tmp);
2297
2298         return res;
2299 }
2300
2301
2302 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2303                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2304 {
2305         struct wpabuf *tmp;
2306         u8 *lpos;
2307         struct p2p_device *peer;
2308         size_t tmplen;
2309         int res;
2310         size_t extra = 0;
2311
2312         if (!p2p_group)
2313                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2314
2315 #ifdef CONFIG_WIFI_DISPLAY
2316         if (p2p->wfd_ie_assoc_req)
2317                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2318 #endif /* CONFIG_WIFI_DISPLAY */
2319
2320         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2321                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2322
2323         /*
2324          * (Re)Association Request - P2P IE
2325          * P2P Capability attribute (shall be present)
2326          * Extended Listen Timing (may be present)
2327          * P2P Device Info attribute (shall be present)
2328          */
2329         tmp = wpabuf_alloc(200 + extra);
2330         if (tmp == NULL)
2331                 return -1;
2332
2333 #ifdef CONFIG_WIFI_DISPLAY
2334         if (p2p->wfd_ie_assoc_req)
2335                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2336 #endif /* CONFIG_WIFI_DISPLAY */
2337
2338         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2339                 wpabuf_put_buf(tmp,
2340                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2341
2342         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2343
2344         lpos = p2p_buf_add_ie_hdr(tmp);
2345         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2346         if (p2p->ext_listen_interval)
2347                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2348                                               p2p->ext_listen_interval);
2349         p2p_buf_add_device_info(tmp, p2p, peer);
2350         p2p_buf_update_ie_hdr(tmp, lpos);
2351
2352         tmplen = wpabuf_len(tmp);
2353         if (tmplen > len)
2354                 res = -1;
2355         else {
2356                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2357                 res = tmplen;
2358         }
2359         wpabuf_free(tmp);
2360
2361         return res;
2362 }
2363
2364
2365 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2366 {
2367         struct wpabuf *p2p_ie;
2368         int ret;
2369
2370         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2371         if (p2p_ie == NULL)
2372                 return 0;
2373
2374         ret = p2p_attr_text(p2p_ie, buf, end);
2375         wpabuf_free(p2p_ie);
2376         return ret;
2377 }
2378
2379
2380 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2381 {
2382         struct p2p_message msg;
2383
2384         os_memset(&msg, 0, sizeof(msg));
2385         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2386                 return -1;
2387
2388         if (msg.p2p_device_addr) {
2389                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2390                 return 0;
2391         } else if (msg.device_id) {
2392                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2393                 return 0;
2394         }
2395         return -1;
2396 }
2397
2398
2399 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2400 {
2401         struct wpabuf *p2p_ie;
2402         int ret;
2403
2404         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2405                                              P2P_IE_VENDOR_TYPE);
2406         if (p2p_ie == NULL)
2407                 return -1;
2408         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2409         wpabuf_free(p2p_ie);
2410         return ret;
2411 }
2412
2413
2414 static void p2p_clear_go_neg(struct p2p_data *p2p)
2415 {
2416         p2p->go_neg_peer = NULL;
2417         p2p_clear_timeout(p2p);
2418         p2p_set_state(p2p, P2P_IDLE);
2419 }
2420
2421
2422 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2423 {
2424         if (p2p->go_neg_peer == NULL) {
2425                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2426                 return; /* No pending Group Formation */
2427         }
2428
2429         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2430             0) {
2431                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2432                         MACSTR " (GO Negotiation peer " MACSTR ")",
2433                         MAC2STR(mac_addr),
2434                         MAC2STR(p2p->go_neg_peer->intended_addr));
2435                 return; /* Ignore unexpected peer address */
2436         }
2437
2438         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2439                 MAC2STR(mac_addr));
2440
2441         p2p_clear_go_neg(p2p);
2442 }
2443
2444
2445 void p2p_group_formation_failed(struct p2p_data *p2p)
2446 {
2447         if (p2p->go_neg_peer == NULL) {
2448                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2449                 return; /* No pending Group Formation */
2450         }
2451
2452         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2453                 MAC2STR(p2p->go_neg_peer->intended_addr));
2454
2455         p2p_clear_go_neg(p2p);
2456 }
2457
2458
2459 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2460 {
2461         struct p2p_data *p2p;
2462
2463         if (cfg->max_peers < 1 ||
2464             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2465                 return NULL;
2466
2467         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2468         if (p2p == NULL)
2469                 return NULL;
2470         p2p->cfg = (struct p2p_config *) (p2p + 1);
2471         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2472         if (cfg->dev_name)
2473                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2474         if (cfg->manufacturer)
2475                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2476         if (cfg->model_name)
2477                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2478         if (cfg->model_number)
2479                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2480         if (cfg->serial_number)
2481                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2482         if (cfg->pref_chan) {
2483                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2484                                                 sizeof(struct p2p_channel));
2485                 if (p2p->cfg->pref_chan) {
2486                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2487                                   cfg->num_pref_chan *
2488                                   sizeof(struct p2p_channel));
2489                 } else
2490                         p2p->cfg->num_pref_chan = 0;
2491         }
2492
2493         p2p->min_disc_int = 1;
2494         p2p->max_disc_int = 3;
2495         p2p->max_disc_tu = -1;
2496
2497         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2498                 p2p->next_tie_breaker = 0;
2499         p2p->next_tie_breaker &= 0x01;
2500         if (cfg->sd_request)
2501                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2502         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2503         if (cfg->concurrent_operations)
2504                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2505         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2506
2507         dl_list_init(&p2p->devices);
2508
2509         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2510                                p2p_expiration_timeout, p2p, NULL);
2511
2512         p2p->go_timeout = 100;
2513         p2p->client_timeout = 20;
2514         p2p->num_p2p_sd_queries = 0;
2515
2516         p2p_dbg(p2p, "initialized");
2517         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2518         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2519
2520         return p2p;
2521 }
2522
2523
2524 void p2p_deinit(struct p2p_data *p2p)
2525 {
2526 #ifdef CONFIG_WIFI_DISPLAY
2527         wpabuf_free(p2p->wfd_ie_beacon);
2528         wpabuf_free(p2p->wfd_ie_probe_req);
2529         wpabuf_free(p2p->wfd_ie_probe_resp);
2530         wpabuf_free(p2p->wfd_ie_assoc_req);
2531         wpabuf_free(p2p->wfd_ie_invitation);
2532         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2533         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2534         wpabuf_free(p2p->wfd_ie_go_neg);
2535         wpabuf_free(p2p->wfd_dev_info);
2536         wpabuf_free(p2p->wfd_assoc_bssid);
2537         wpabuf_free(p2p->wfd_coupled_sink_info);
2538 #endif /* CONFIG_WIFI_DISPLAY */
2539
2540         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2541         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2542         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2543         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2544         p2p_flush(p2p);
2545         p2p_free_req_dev_types(p2p);
2546         os_free(p2p->cfg->dev_name);
2547         os_free(p2p->cfg->manufacturer);
2548         os_free(p2p->cfg->model_name);
2549         os_free(p2p->cfg->model_number);
2550         os_free(p2p->cfg->serial_number);
2551         os_free(p2p->cfg->pref_chan);
2552         os_free(p2p->groups);
2553         wpabuf_free(p2p->sd_resp);
2554         os_free(p2p->after_scan_tx);
2555         p2p_remove_wps_vendor_extensions(p2p);
2556         os_free(p2p->no_go_freq.range);
2557         os_free(p2p);
2558 }
2559
2560
2561 void p2p_flush(struct p2p_data *p2p)
2562 {
2563         struct p2p_device *dev, *prev;
2564         p2p_stop_find(p2p);
2565         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2566                               list) {
2567                 dl_list_del(&dev->list);
2568                 p2p_device_free(p2p, dev);
2569         }
2570         p2p_free_sd_queries(p2p);
2571         os_free(p2p->after_scan_tx);
2572         p2p->after_scan_tx = NULL;
2573 }
2574
2575
2576 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2577 {
2578         struct p2p_device *dev;
2579
2580         dev = p2p_get_device(p2p, addr);
2581         if (dev == NULL)
2582                 return -1;
2583
2584         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2585
2586         if (p2p->go_neg_peer == dev)
2587                 p2p->go_neg_peer = NULL;
2588
2589         dev->wps_method = WPS_NOT_READY;
2590         dev->oob_pw_id = 0;
2591         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2592         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2593
2594         /* Check if after_scan_tx is for this peer. If so free it */
2595         if (p2p->after_scan_tx &&
2596             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2597                 os_free(p2p->after_scan_tx);
2598                 p2p->after_scan_tx = NULL;
2599         }
2600
2601         return 0;
2602 }
2603
2604
2605 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2606 {
2607         os_free(p2p->cfg->dev_name);
2608         if (dev_name) {
2609                 p2p->cfg->dev_name = os_strdup(dev_name);
2610                 if (p2p->cfg->dev_name == NULL)
2611                         return -1;
2612         } else
2613                 p2p->cfg->dev_name = NULL;
2614         return 0;
2615 }
2616
2617
2618 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2619 {
2620         os_free(p2p->cfg->manufacturer);
2621         p2p->cfg->manufacturer = NULL;
2622         if (manufacturer) {
2623                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2624                 if (p2p->cfg->manufacturer == NULL)
2625                         return -1;
2626         }
2627
2628         return 0;
2629 }
2630
2631
2632 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2633 {
2634         os_free(p2p->cfg->model_name);
2635         p2p->cfg->model_name = NULL;
2636         if (model_name) {
2637                 p2p->cfg->model_name = os_strdup(model_name);
2638                 if (p2p->cfg->model_name == NULL)
2639                         return -1;
2640         }
2641
2642         return 0;
2643 }
2644
2645
2646 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2647 {
2648         os_free(p2p->cfg->model_number);
2649         p2p->cfg->model_number = NULL;
2650         if (model_number) {
2651                 p2p->cfg->model_number = os_strdup(model_number);
2652                 if (p2p->cfg->model_number == NULL)
2653                         return -1;
2654         }
2655
2656         return 0;
2657 }
2658
2659
2660 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2661 {
2662         os_free(p2p->cfg->serial_number);
2663         p2p->cfg->serial_number = NULL;
2664         if (serial_number) {
2665                 p2p->cfg->serial_number = os_strdup(serial_number);
2666                 if (p2p->cfg->serial_number == NULL)
2667                         return -1;
2668         }
2669
2670         return 0;
2671 }
2672
2673
2674 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2675 {
2676         p2p->cfg->config_methods = config_methods;
2677 }
2678
2679
2680 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2681 {
2682         os_memcpy(p2p->cfg->uuid, uuid, 16);
2683 }
2684
2685
2686 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2687 {
2688         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2689         return 0;
2690 }
2691
2692
2693 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2694                           size_t num_dev_types)
2695 {
2696         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2697                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2698         p2p->cfg->num_sec_dev_types = num_dev_types;
2699         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2700         return 0;
2701 }
2702
2703
2704 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2705 {
2706         int i;
2707
2708         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2709                 wpabuf_free(p2p->wps_vendor_ext[i]);
2710                 p2p->wps_vendor_ext[i] = NULL;
2711         }
2712 }
2713
2714
2715 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2716                                  const struct wpabuf *vendor_ext)
2717 {
2718         int i;
2719
2720         if (vendor_ext == NULL)
2721                 return -1;
2722
2723         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2724                 if (p2p->wps_vendor_ext[i] == NULL)
2725                         break;
2726         }
2727         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2728                 return -1;
2729
2730         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2731         if (p2p->wps_vendor_ext[i] == NULL)
2732                 return -1;
2733
2734         return 0;
2735 }
2736
2737
2738 int p2p_set_country(struct p2p_data *p2p, const char *country)
2739 {
2740         os_memcpy(p2p->cfg->country, country, 3);
2741         return 0;
2742 }
2743
2744
2745 void p2p_continue_find(struct p2p_data *p2p)
2746 {
2747         struct p2p_device *dev;
2748         p2p_set_state(p2p, P2P_SEARCH);
2749         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2750                 if (dev->sd_pending_bcast_queries == 0) {
2751                         /* Initialize with total number of registered broadcast
2752                          * SD queries. */
2753                         dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2754                 }
2755
2756                 if (p2p_start_sd(p2p, dev) == 0)
2757                         return;
2758                 if (dev->req_config_methods &&
2759                     !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2760                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2761                                 MACSTR " (config methods 0x%x)",
2762                                 MAC2STR(dev->info.p2p_device_addr),
2763                                 dev->req_config_methods);
2764                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2765                                 return;
2766                 }
2767         }
2768
2769         p2p_listen_in_find(p2p, 1);
2770 }
2771
2772
2773 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2774 {
2775         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2776                 success);
2777         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2778
2779         if (!success) {
2780                 p2p->sd_peer = NULL;
2781                 p2p_continue_find(p2p);
2782                 return;
2783         }
2784
2785         if (p2p->sd_peer == NULL) {
2786                 p2p_dbg(p2p, "No SD peer entry known");
2787                 p2p_continue_find(p2p);
2788                 return;
2789         }
2790
2791         if (p2p->sd_query->for_all_peers) {
2792                 /* Update the pending broadcast SD query count for this device
2793                  */
2794                 p2p->sd_peer->sd_pending_bcast_queries--;
2795
2796                 /*
2797                  * If there are no pending broadcast queries for this device,
2798                  * mark it as done (-1).
2799                  */
2800                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
2801                         p2p->sd_peer->sd_pending_bcast_queries = -1;
2802         }
2803
2804         /* Wait for response from the peer */
2805         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2806         p2p_set_timeout(p2p, 0, 200000);
2807 }
2808
2809
2810 /**
2811  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2812  * @p2p: P2P module context from p2p_init()
2813  */
2814 static void p2p_retry_pd(struct p2p_data *p2p)
2815 {
2816         struct p2p_device *dev;
2817
2818         if (p2p->state != P2P_IDLE)
2819                 return;
2820
2821         /*
2822          * Retry the prov disc req attempt only for the peer that the user had
2823          * requested.
2824          */
2825
2826         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2827                 if (os_memcmp(p2p->pending_pd_devaddr,
2828                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2829                         continue;
2830                 if (!dev->req_config_methods)
2831                         continue;
2832
2833                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2834                         MACSTR " (config methods 0x%x)",
2835                         MAC2STR(dev->info.p2p_device_addr),
2836                         dev->req_config_methods);
2837                 p2p_send_prov_disc_req(p2p, dev,
2838                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2839                                        p2p->pd_force_freq);
2840                 return;
2841         }
2842 }
2843
2844
2845 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2846 {
2847         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2848                 success);
2849
2850         /*
2851          * Postpone resetting the pending action state till after we actually
2852          * time out. This allows us to take some action like notifying any
2853          * interested parties about no response to the request.
2854          *
2855          * When the timer (below) goes off we check in IDLE, SEARCH, or
2856          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2857          * requests in, if this was still pending and then raise notification.
2858          */
2859
2860         if (!success) {
2861                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2862
2863                 if (p2p->user_initiated_pd &&
2864                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2865                 {
2866                         /* Retry request from timeout to avoid busy loops */
2867                         p2p->pending_action_state = P2P_PENDING_PD;
2868                         p2p_set_timeout(p2p, 0, 50000);
2869                 } else if (p2p->state != P2P_IDLE)
2870                         p2p_continue_find(p2p);
2871                 else if (p2p->user_initiated_pd) {
2872                         p2p->pending_action_state = P2P_PENDING_PD;
2873                         p2p_set_timeout(p2p, 0, 300000);
2874                 }
2875                 return;
2876         }
2877
2878         /*
2879          * This postponing, of resetting pending_action_state, needs to be
2880          * done only for user initiated PD requests and not internal ones.
2881          */
2882         if (p2p->user_initiated_pd)
2883                 p2p->pending_action_state = P2P_PENDING_PD;
2884         else
2885                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2886
2887         /* Wait for response from the peer */
2888         if (p2p->state == P2P_SEARCH)
2889                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2890         p2p_set_timeout(p2p, 0, 200000);
2891 }
2892
2893
2894 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2895                          struct os_reltime *rx_time, int level, const u8 *ies,
2896                          size_t ies_len)
2897 {
2898         if (os_reltime_before(rx_time, &p2p->find_start)) {
2899                 /*
2900                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2901                  * scan results for relatively long time. To avoid reporting
2902                  * stale information, update P2P peers only based on results
2903                  * that have based on frames received after the last p2p_find
2904                  * operation was started.
2905                  */
2906                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2907                         " (rx_time=%u.%06u)",
2908                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2909                         (unsigned int) rx_time->usec);
2910                 return 0;
2911         }
2912
2913         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2914
2915         return 0;
2916 }
2917
2918
2919 void p2p_scan_res_handled(struct p2p_data *p2p)
2920 {
2921         if (!p2p->p2p_scan_running) {
2922                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2923         }
2924         p2p->p2p_scan_running = 0;
2925         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2926
2927         if (p2p_run_after_scan(p2p))
2928                 return;
2929         if (p2p->state == P2P_SEARCH)
2930                 p2p_continue_find(p2p);
2931 }
2932
2933
2934 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2935 {
2936         u8 *len;
2937
2938 #ifdef CONFIG_WIFI_DISPLAY
2939         if (p2p->wfd_ie_probe_req)
2940                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2941 #endif /* CONFIG_WIFI_DISPLAY */
2942
2943         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2944                 wpabuf_put_buf(ies,
2945                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2946
2947         len = p2p_buf_add_ie_hdr(ies);
2948         p2p_buf_add_capability(ies, p2p->dev_capab &
2949                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2950         if (dev_id)
2951                 p2p_buf_add_device_id(ies, dev_id);
2952         if (p2p->cfg->reg_class && p2p->cfg->channel)
2953                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2954                                            p2p->cfg->reg_class,
2955                                            p2p->cfg->channel);
2956         if (p2p->ext_listen_interval)
2957                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2958                                               p2p->ext_listen_interval);
2959         /* TODO: p2p_buf_add_operating_channel() if GO */
2960         p2p_buf_update_ie_hdr(ies, len);
2961 }
2962
2963
2964 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2965 {
2966         size_t len = 100;
2967
2968 #ifdef CONFIG_WIFI_DISPLAY
2969         if (p2p && p2p->wfd_ie_probe_req)
2970                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2971 #endif /* CONFIG_WIFI_DISPLAY */
2972
2973         if (p2p && p2p->vendor_elem &&
2974             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
2975                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
2976
2977         return len;
2978 }
2979
2980
2981 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2982 {
2983         return p2p_attr_text(p2p_ie, buf, end);
2984 }
2985
2986
2987 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2988 {
2989         struct p2p_device *dev = p2p->go_neg_peer;
2990         int timeout;
2991
2992         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2993
2994         if (dev == NULL) {
2995                 p2p_dbg(p2p, "No pending GO Negotiation");
2996                 return;
2997         }
2998
2999         if (success) {
3000                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3001                         p2p_set_state(p2p, P2P_IDLE);
3002                         return;
3003                 }
3004         } else if (dev->go_neg_req_sent) {
3005                 /* Cancel the increment from p2p_connect_send() on failure */
3006                 dev->go_neg_req_sent--;
3007         }
3008
3009         if (!success &&
3010             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3011             !is_zero_ether_addr(dev->member_in_go_dev)) {
3012                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3013                         MAC2STR(dev->info.p2p_device_addr));
3014                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3015                 p2p_send_dev_disc_req(p2p, dev);
3016                 return;
3017         }
3018
3019         /*
3020          * Use P2P find, if needed, to find the other device from its listen
3021          * channel.
3022          */
3023         p2p_set_state(p2p, P2P_CONNECT);
3024         timeout = success ? 500000 : 100000;
3025         if (!success && p2p->go_neg_peer &&
3026             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3027                 unsigned int r;
3028                 /*
3029                  * Peer is expected to wait our response and we will skip the
3030                  * listen phase. Add some randomness to the wait time here to
3031                  * make it less likely to hit cases where we could end up in
3032                  * sync with peer not listening.
3033                  */
3034                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3035                         r = 0;
3036                 timeout += r % 100000;
3037         }
3038         p2p_set_timeout(p2p, 0, timeout);
3039 }
3040
3041
3042 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3043 {
3044         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3045                 success);
3046         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3047                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3048                 return;
3049         }
3050         p2p_set_state(p2p, P2P_CONNECT);
3051         p2p_set_timeout(p2p, 0, 500000);
3052 }
3053
3054
3055 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3056                                        const u8 *addr)
3057 {
3058         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3059         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3060                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3061                                   p2p->go_neg_peer->status);
3062         } else if (success) {
3063                 struct p2p_device *dev;
3064                 dev = p2p_get_device(p2p, addr);
3065                 if (dev &&
3066                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3067                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3068         }
3069 }
3070
3071
3072 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3073                                enum p2p_send_action_result result)
3074 {
3075         struct p2p_device *dev;
3076
3077         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3078         if (result == P2P_SEND_ACTION_FAILED) {
3079                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3080                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3081                 return;
3082         }
3083
3084         dev = p2p->go_neg_peer;
3085
3086         if (result == P2P_SEND_ACTION_NO_ACK) {
3087                 /*
3088                  * Retry GO Negotiation Confirmation
3089                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3090                  * ACK for confirmation.
3091                  */
3092                 if (dev && dev->go_neg_conf &&
3093                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3094                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3095                                 dev->go_neg_conf_sent);
3096                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3097                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3098                                             dev->info.p2p_device_addr,
3099                                             p2p->cfg->dev_addr,
3100                                             dev->info.p2p_device_addr,
3101                                             wpabuf_head(dev->go_neg_conf),
3102                                             wpabuf_len(dev->go_neg_conf), 0) >=
3103                             0) {
3104                                 dev->go_neg_conf_sent++;
3105                                 return;
3106                         }
3107                         p2p_dbg(p2p, "Failed to re-send Action frame");
3108
3109                         /*
3110                          * Continue with the assumption that the first attempt
3111                          * went through and just the ACK frame was lost.
3112                          */
3113                 }
3114
3115                 /*
3116                  * It looks like the TX status for GO Negotiation Confirm is
3117                  * often showing failure even when the peer has actually
3118                  * received the frame. Since the peer may change channels
3119                  * immediately after having received the frame, we may not see
3120                  * an Ack for retries, so just dropping a single frame may
3121                  * trigger this. To allow the group formation to succeed if the
3122                  * peer did indeed receive the frame, continue regardless of
3123                  * the TX status.
3124                  */
3125                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3126         }
3127
3128         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3129
3130         if (dev == NULL)
3131                 return;
3132
3133         p2p_go_complete(p2p, dev);
3134 }
3135
3136
3137 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3138                         const u8 *src, const u8 *bssid,
3139                         enum p2p_send_action_result result)
3140 {
3141         enum p2p_pending_action_state state;
3142         int success;
3143
3144         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3145                 " src=" MACSTR " bssid=" MACSTR " result=%d",
3146                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3147                 MAC2STR(bssid), result);
3148         success = result == P2P_SEND_ACTION_SUCCESS;
3149         state = p2p->pending_action_state;
3150         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3151         switch (state) {
3152         case P2P_NO_PENDING_ACTION:
3153                 if (p2p->send_action_in_progress) {
3154                         p2p->send_action_in_progress = 0;
3155                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3156                 }
3157                 if (p2p->after_scan_tx_in_progress) {
3158                         p2p->after_scan_tx_in_progress = 0;
3159                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3160                             p2p_run_after_scan(p2p))
3161                                 break;
3162                         if (p2p->state == P2P_SEARCH) {
3163                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3164                                 p2p_continue_find(p2p);
3165                         }
3166                 }
3167                 break;
3168         case P2P_PENDING_GO_NEG_REQUEST:
3169                 p2p_go_neg_req_cb(p2p, success);
3170                 break;
3171         case P2P_PENDING_GO_NEG_RESPONSE:
3172                 p2p_go_neg_resp_cb(p2p, success);
3173                 break;
3174         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3175                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3176                 break;
3177         case P2P_PENDING_GO_NEG_CONFIRM:
3178                 p2p_go_neg_conf_cb(p2p, result);
3179                 break;
3180         case P2P_PENDING_SD:
3181                 p2p_sd_cb(p2p, success);
3182                 break;
3183         case P2P_PENDING_PD:
3184                 p2p_prov_disc_cb(p2p, success);
3185                 break;
3186         case P2P_PENDING_INVITATION_REQUEST:
3187                 p2p_invitation_req_cb(p2p, success);
3188                 break;
3189         case P2P_PENDING_INVITATION_RESPONSE:
3190                 p2p_invitation_resp_cb(p2p, success);
3191                 break;
3192         case P2P_PENDING_DEV_DISC_REQUEST:
3193                 p2p_dev_disc_req_cb(p2p, success);
3194                 break;
3195         case P2P_PENDING_DEV_DISC_RESPONSE:
3196                 p2p_dev_disc_resp_cb(p2p, success);
3197                 break;
3198         case P2P_PENDING_GO_DISC_REQ:
3199                 p2p_go_disc_req_cb(p2p, success);
3200                 break;
3201         }
3202
3203         p2p->after_scan_tx_in_progress = 0;
3204 }
3205
3206
3207 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3208                    unsigned int duration)
3209 {
3210         if (freq == p2p->pending_client_disc_freq) {
3211                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3212                 p2p->pending_client_disc_freq = 0;
3213                 return;
3214         }
3215
3216         if (freq != p2p->pending_listen_freq) {
3217                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3218                         freq, duration, p2p->pending_listen_freq);
3219                 return;
3220         }
3221
3222         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3223                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3224                 p2p->pending_listen_freq);
3225         p2p->in_listen = 1;
3226         p2p->drv_in_listen = freq;
3227         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3228                 /*
3229                  * Add 20 msec extra wait to avoid race condition with driver
3230                  * remain-on-channel end event, i.e., give driver more time to
3231                  * complete the operation before our timeout expires.
3232                  */
3233                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3234                                 p2p->pending_listen_usec + 20000);
3235         }
3236
3237         p2p->pending_listen_freq = 0;
3238 }
3239
3240
3241 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3242 {
3243         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3244         p2p->drv_in_listen = 0;
3245         if (p2p->in_listen)
3246                 return 0; /* Internal timeout will trigger the next step */
3247
3248         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3249                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3250                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3251                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3252                         return 0;
3253                 }
3254
3255                 p2p_set_state(p2p, P2P_CONNECT);
3256                 p2p_connect_send(p2p, p2p->go_neg_peer);
3257                 return 1;
3258         } else if (p2p->state == P2P_SEARCH) {
3259                 if (p2p->p2p_scan_running) {
3260                          /*
3261                           * Search is already in progress. This can happen if
3262                           * an Action frame RX is reported immediately after
3263                           * the end of a remain-on-channel operation and the
3264                           * response frame to that is sent using an offchannel
3265                           * operation while in p2p_find. Avoid an attempt to
3266                           * restart a scan here.
3267                           */
3268                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3269                         return 1;
3270                 }
3271                 if (p2p->pending_listen_freq) {
3272                         /*
3273                          * Better wait a bit if the driver is unable to start
3274                          * offchannel operation for some reason. p2p_search()
3275                          * will be started from internal timeout.
3276                          */
3277                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3278                         p2p_set_timeout(p2p, 0, 100000);
3279                         return 1;
3280                 }
3281                 if (p2p->search_delay) {
3282                         p2p_dbg(p2p, "Delay search operation by %u ms",
3283                                 p2p->search_delay);
3284                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3285                                         (p2p->search_delay % 1000) * 1000);
3286                         return 1;
3287                 }
3288                 p2p_search(p2p);
3289                 return 1;
3290         }
3291
3292         return 0;
3293 }
3294
3295
3296 static void p2p_timeout_connect(struct p2p_data *p2p)
3297 {
3298         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3299         if (p2p->go_neg_peer &&
3300             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3301                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3302                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3303                 return;
3304         }
3305         if (p2p->go_neg_peer &&
3306             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3307             p2p->go_neg_peer->connect_reqs < 120) {
3308                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3309                 p2p_connect_send(p2p, p2p->go_neg_peer);
3310                 return;
3311         }
3312         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3313                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3314                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3315                 p2p_set_timeout(p2p, 0, 30000);
3316                 return;
3317         }
3318         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3319         p2p_listen_in_find(p2p, 0);
3320 }
3321
3322
3323 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3324 {
3325         if (p2p->go_neg_peer) {
3326                 if (p2p->drv_in_listen) {
3327                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3328                         return;
3329                 }
3330
3331                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3332                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3333                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3334                         return;
3335                 }
3336
3337                 p2p_set_state(p2p, P2P_CONNECT);
3338                 p2p_connect_send(p2p, p2p->go_neg_peer);
3339         } else
3340                 p2p_set_state(p2p, P2P_IDLE);
3341 }
3342
3343
3344 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3345 {
3346         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3347
3348         if (p2p->cfg->is_concurrent_session_active &&
3349             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3350                 p2p_set_timeout(p2p, 0, 500000);
3351         else
3352                 p2p_set_timeout(p2p, 0, 200000);
3353 }
3354
3355
3356 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3357 {
3358         struct p2p_device *dev = p2p->go_neg_peer;
3359         struct os_reltime now;
3360
3361         if (dev == NULL) {
3362                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3363                 return;
3364         }
3365
3366         os_get_reltime(&now);
3367         if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
3368                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3369                 p2p_go_neg_failed(p2p, dev, -1);
3370                 return;
3371         }
3372
3373         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3374         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3375         p2p_listen_in_find(p2p, 0);
3376 }
3377
3378
3379 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3380 {
3381         p2p_dbg(p2p, "Service Discovery Query timeout");
3382         if (p2p->sd_peer) {
3383                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3384                 p2p->sd_peer = NULL;
3385         }
3386         p2p_continue_find(p2p);
3387 }
3388
3389
3390 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3391 {
3392         p2p_dbg(p2p, "Provision Discovery Request timeout");
3393         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3394         p2p_continue_find(p2p);
3395 }
3396
3397
3398 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3399 {
3400         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3401
3402         /*
3403          * For user initiated PD requests that we have not gotten any responses
3404          * for while in IDLE state, we retry them a couple of times before
3405          * giving up.
3406          */
3407         if (!p2p->user_initiated_pd)
3408                 return;
3409
3410         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3411
3412         if (p2p->pd_retries) {
3413                 p2p->pd_retries--;
3414                 p2p_retry_pd(p2p);
3415         } else {
3416                 struct p2p_device *dev;
3417                 int for_join = 0;
3418
3419                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3420                         if (os_memcmp(p2p->pending_pd_devaddr,
3421                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3422                                 continue;
3423                         if (dev->req_config_methods &&
3424                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3425                                 for_join = 1;
3426                 }
3427
3428                 if (p2p->cfg->prov_disc_fail)
3429                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3430                                                  p2p->pending_pd_devaddr,
3431                                                  for_join ?
3432                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3433                                                  P2P_PROV_DISC_TIMEOUT);
3434                 p2p_reset_pending_pd(p2p);
3435         }
3436 }
3437
3438
3439 static void p2p_timeout_invite(struct p2p_data *p2p)
3440 {
3441         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3442         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3443         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3444                 /*
3445                  * Better remain on operating channel instead of listen channel
3446                  * when running a group.
3447                  */
3448                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3449                 p2p_set_timeout(p2p, 0, 100000);
3450                 return;
3451         }
3452         p2p_listen_in_find(p2p, 0);
3453 }
3454
3455
3456 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3457 {
3458         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3459                 p2p_set_state(p2p, P2P_INVITE);
3460                 p2p_invite_send(p2p, p2p->invite_peer,
3461                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3462         } else {
3463                 if (p2p->invite_peer) {
3464                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3465                         if (p2p->cfg->invitation_result)
3466                                 p2p->cfg->invitation_result(
3467                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3468                                         p2p->invite_peer->info.p2p_device_addr,
3469                                         0, 0);
3470                 }
3471                 p2p_set_state(p2p, P2P_IDLE);
3472         }
3473 }
3474
3475
3476 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3477 {
3478         struct p2p_data *p2p = eloop_ctx;
3479
3480         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3481
3482         p2p->in_listen = 0;
3483
3484         switch (p2p->state) {
3485         case P2P_IDLE:
3486                 /* Check if we timed out waiting for PD req */
3487                 if (p2p->pending_action_state == P2P_PENDING_PD)
3488                         p2p_timeout_prov_disc_req(p2p);
3489                 break;
3490         case P2P_SEARCH:
3491                 /* Check if we timed out waiting for PD req */
3492                 if (p2p->pending_action_state == P2P_PENDING_PD)
3493                         p2p_timeout_prov_disc_req(p2p);
3494                 if (p2p->search_delay && !p2p->in_search_delay) {
3495                         p2p_dbg(p2p, "Delay search operation by %u ms",
3496                                 p2p->search_delay);
3497                         p2p->in_search_delay = 1;
3498                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3499                                         (p2p->search_delay % 1000) * 1000);
3500                         break;
3501                 }
3502                 p2p->in_search_delay = 0;
3503                 p2p_search(p2p);
3504                 break;
3505         case P2P_CONNECT:
3506                 p2p_timeout_connect(p2p);
3507                 break;
3508         case P2P_CONNECT_LISTEN:
3509                 p2p_timeout_connect_listen(p2p);
3510                 break;
3511         case P2P_GO_NEG:
3512                 break;
3513         case P2P_LISTEN_ONLY:
3514                 /* Check if we timed out waiting for PD req */
3515                 if (p2p->pending_action_state == P2P_PENDING_PD)
3516                         p2p_timeout_prov_disc_req(p2p);
3517
3518                 if (p2p->ext_listen_only) {
3519                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3520                         p2p->ext_listen_only = 0;
3521                         p2p_set_state(p2p, P2P_IDLE);
3522                 }
3523                 break;
3524         case P2P_WAIT_PEER_CONNECT:
3525                 p2p_timeout_wait_peer_connect(p2p);
3526                 break;
3527         case P2P_WAIT_PEER_IDLE:
3528                 p2p_timeout_wait_peer_idle(p2p);
3529                 break;
3530         case P2P_SD_DURING_FIND:
3531                 p2p_timeout_sd_during_find(p2p);
3532                 break;
3533         case P2P_PROVISIONING:
3534                 break;
3535         case P2P_PD_DURING_FIND:
3536                 p2p_timeout_prov_disc_during_find(p2p);
3537                 break;
3538         case P2P_INVITE:
3539                 p2p_timeout_invite(p2p);
3540                 break;
3541         case P2P_INVITE_LISTEN:
3542                 p2p_timeout_invite_listen(p2p);
3543                 break;
3544         }
3545 }
3546
3547
3548 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3549 {
3550         struct p2p_device *dev;
3551
3552         dev = p2p_get_device(p2p, peer_addr);
3553         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3554                 MACSTR, MAC2STR(peer_addr));
3555         if (dev == NULL) {
3556                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3557                 return -1;
3558         }
3559         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3560         dev->flags |= P2P_DEV_USER_REJECTED;
3561         return 0;
3562 }
3563
3564
3565 const char * p2p_wps_method_text(enum p2p_wps_method method)
3566 {
3567         switch (method) {
3568         case WPS_NOT_READY:
3569                 return "not-ready";
3570         case WPS_PIN_DISPLAY:
3571                 return "Display";
3572         case WPS_PIN_KEYPAD:
3573                 return "Keypad";
3574         case WPS_PBC:
3575                 return "PBC";
3576         case WPS_NFC:
3577                 return "NFC";
3578         }
3579
3580         return "??";
3581 }
3582
3583
3584 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3585 {
3586         switch (go_state) {
3587         case UNKNOWN_GO:
3588                 return "unknown";
3589         case LOCAL_GO:
3590                 return "local";
3591         case  REMOTE_GO:
3592                 return "remote";
3593         }
3594
3595         return "??";
3596 }
3597
3598
3599 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3600                                                const u8 *addr, int next)
3601 {
3602         struct p2p_device *dev;
3603
3604         if (addr)
3605                 dev = p2p_get_device(p2p, addr);
3606         else
3607                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3608
3609         if (dev && next) {
3610                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3611                 if (&dev->list == &p2p->devices)
3612                         dev = NULL;
3613         }
3614
3615         if (dev == NULL)
3616                 return NULL;
3617
3618         return &dev->info;
3619 }
3620
3621
3622 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3623                           char *buf, size_t buflen)
3624 {
3625         struct p2p_device *dev;
3626         int res;
3627         char *pos, *end;
3628         struct os_reltime now;
3629
3630         if (info == NULL)
3631                 return -1;
3632
3633         dev = (struct p2p_device *) (((u8 *) info) -
3634                                      offsetof(struct p2p_device, info));
3635
3636         pos = buf;
3637         end = buf + buflen;
3638
3639         os_get_reltime(&now);
3640         res = os_snprintf(pos, end - pos,
3641                           "age=%d\n"
3642                           "listen_freq=%d\n"
3643                           "wps_method=%s\n"
3644                           "interface_addr=" MACSTR "\n"
3645                           "member_in_go_dev=" MACSTR "\n"
3646                           "member_in_go_iface=" MACSTR "\n"
3647                           "go_neg_req_sent=%d\n"
3648                           "go_state=%s\n"
3649                           "dialog_token=%u\n"
3650                           "intended_addr=" MACSTR "\n"
3651                           "country=%c%c\n"
3652                           "oper_freq=%d\n"
3653                           "req_config_methods=0x%x\n"
3654                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3655                           "status=%d\n"
3656                           "invitation_reqs=%u\n",
3657                           (int) (now.sec - dev->last_seen.sec),
3658                           dev->listen_freq,
3659                           p2p_wps_method_text(dev->wps_method),
3660                           MAC2STR(dev->interface_addr),
3661                           MAC2STR(dev->member_in_go_dev),
3662                           MAC2STR(dev->member_in_go_iface),
3663                           dev->go_neg_req_sent,
3664                           p2p_go_state_text(dev->go_state),
3665                           dev->dialog_token,
3666                           MAC2STR(dev->intended_addr),
3667                           dev->country[0] ? dev->country[0] : '_',
3668                           dev->country[1] ? dev->country[1] : '_',
3669                           dev->oper_freq,
3670                           dev->req_config_methods,
3671                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3672                           "[PROBE_REQ_ONLY]" : "",
3673                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3674                           dev->flags & P2P_DEV_NOT_YET_READY ?
3675                           "[NOT_YET_READY]" : "",
3676                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3677                           "[PD_PEER_DISPLAY]" : "",
3678                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3679                           "[PD_PEER_KEYPAD]" : "",
3680                           dev->flags & P2P_DEV_USER_REJECTED ?
3681                           "[USER_REJECTED]" : "",
3682                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3683                           "[PEER_WAITING_RESPONSE]" : "",
3684                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3685                           "[PREFER_PERSISTENT_GROUP]" : "",
3686                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3687                           "[WAIT_GO_NEG_RESPONSE]" : "",
3688                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3689                           "[WAIT_GO_NEG_CONFIRM]" : "",
3690                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3691                           "[GROUP_CLIENT_ONLY]" : "",
3692                           dev->flags & P2P_DEV_FORCE_FREQ ?
3693                           "[FORCE_FREQ]" : "",
3694                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3695                           "[PD_FOR_JOIN]" : "",
3696                           dev->status,
3697                           dev->invitation_reqs);
3698         if (res < 0 || res >= end - pos)
3699                 return pos - buf;
3700         pos += res;
3701
3702         if (dev->ext_listen_period) {
3703                 res = os_snprintf(pos, end - pos,
3704                                   "ext_listen_period=%u\n"
3705                                   "ext_listen_interval=%u\n",
3706                                   dev->ext_listen_period,
3707                                   dev->ext_listen_interval);
3708                 if (res < 0 || res >= end - pos)
3709                         return pos - buf;
3710                 pos += res;
3711         }
3712
3713         if (dev->oper_ssid_len) {
3714                 res = os_snprintf(pos, end - pos,
3715                                   "oper_ssid=%s\n",
3716                                   wpa_ssid_txt(dev->oper_ssid,
3717                                                dev->oper_ssid_len));
3718                 if (res < 0 || res >= end - pos)
3719                         return pos - buf;
3720                 pos += res;
3721         }
3722
3723 #ifdef CONFIG_WIFI_DISPLAY
3724         if (dev->info.wfd_subelems) {
3725                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3726                 if (res < 0 || res >= end - pos)
3727                         return pos - buf;
3728                 pos += res;
3729
3730                 pos += wpa_snprintf_hex(pos, end - pos,
3731                                         wpabuf_head(dev->info.wfd_subelems),
3732                                         wpabuf_len(dev->info.wfd_subelems));
3733
3734                 res = os_snprintf(pos, end - pos, "\n");
3735                 if (res < 0 || res >= end - pos)
3736                         return pos - buf;
3737                 pos += res;
3738         }
3739 #endif /* CONFIG_WIFI_DISPLAY */
3740
3741         return pos - buf;
3742 }
3743
3744
3745 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3746 {
3747         return p2p_get_device(p2p, addr) != NULL;
3748 }
3749
3750
3751 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3752 {
3753         if (enabled) {
3754                 p2p_dbg(p2p, "Client discoverability enabled");
3755                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3756         } else {
3757                 p2p_dbg(p2p, "Client discoverability disabled");
3758                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3759         }
3760 }
3761
3762
3763 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3764                                               u32 duration2, u32 interval2)
3765 {
3766         struct wpabuf *req;
3767         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3768         u8 *len;
3769
3770         req = wpabuf_alloc(100);
3771         if (req == NULL)
3772                 return NULL;
3773
3774         if (duration1 || interval1) {
3775                 os_memset(&desc1, 0, sizeof(desc1));
3776                 desc1.count_type = 1;
3777                 desc1.duration = duration1;
3778                 desc1.interval = interval1;
3779                 ptr1 = &desc1;
3780
3781                 if (duration2 || interval2) {
3782                         os_memset(&desc2, 0, sizeof(desc2));
3783                         desc2.count_type = 2;
3784                         desc2.duration = duration2;
3785                         desc2.interval = interval2;
3786                         ptr2 = &desc2;
3787                 }
3788         }
3789
3790         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3791         len = p2p_buf_add_ie_hdr(req);
3792         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3793         p2p_buf_update_ie_hdr(req, len);
3794
3795         return req;
3796 }
3797
3798
3799 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3800                      const u8 *own_interface_addr, unsigned int freq,
3801                      u32 duration1, u32 interval1, u32 duration2,
3802                      u32 interval2)
3803 {
3804         struct wpabuf *req;
3805
3806         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3807                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3808                 "dur2=%u int2=%u",
3809                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3810                 freq, duration1, interval1, duration2, interval2);
3811
3812         req = p2p_build_presence_req(duration1, interval1, duration2,
3813                                      interval2);
3814         if (req == NULL)
3815                 return -1;
3816
3817         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3818         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3819                             go_interface_addr,
3820                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3821                 p2p_dbg(p2p, "Failed to send Action frame");
3822         }
3823         wpabuf_free(req);
3824
3825         return 0;
3826 }
3827
3828
3829 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3830                                                size_t noa_len, u8 dialog_token)
3831 {
3832         struct wpabuf *resp;
3833         u8 *len;
3834
3835         resp = wpabuf_alloc(100 + noa_len);
3836         if (resp == NULL)
3837                 return NULL;
3838
3839         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3840         len = p2p_buf_add_ie_hdr(resp);
3841         p2p_buf_add_status(resp, status);
3842         if (noa) {
3843                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3844                 wpabuf_put_le16(resp, noa_len);
3845                 wpabuf_put_data(resp, noa, noa_len);
3846         } else
3847                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3848         p2p_buf_update_ie_hdr(resp, len);
3849
3850         return resp;
3851 }
3852
3853
3854 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3855                                      const u8 *sa, const u8 *data, size_t len,
3856                                      int rx_freq)
3857 {
3858         struct p2p_message msg;
3859         u8 status;
3860         struct wpabuf *resp;
3861         size_t g;
3862         struct p2p_group *group = NULL;
3863         int parsed = 0;
3864         u8 noa[50];
3865         int noa_len;
3866
3867         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3868
3869         for (g = 0; g < p2p->num_groups; g++) {
3870                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3871                               ETH_ALEN) == 0) {
3872                         group = p2p->groups[g];
3873                         break;
3874                 }
3875         }
3876         if (group == NULL) {
3877                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3878                         MACSTR, MAC2STR(da));
3879                 return;
3880         }
3881
3882         if (p2p_parse(data, len, &msg) < 0) {
3883                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3884                 status = P2P_SC_FAIL_INVALID_PARAMS;
3885                 goto fail;
3886         }
3887         parsed = 1;
3888
3889         if (msg.noa == NULL) {
3890                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3891                 status = P2P_SC_FAIL_INVALID_PARAMS;
3892                 goto fail;
3893         }
3894
3895         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3896
3897 fail:
3898         if (p2p->cfg->get_noa)
3899                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3900                                             sizeof(noa));
3901         else
3902                 noa_len = -1;
3903         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3904                                        noa_len > 0 ? noa_len : 0,
3905                                        msg.dialog_token);
3906         if (parsed)
3907                 p2p_parse_free(&msg);
3908         if (resp == NULL)
3909                 return;
3910
3911         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3912         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3913                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3914                 p2p_dbg(p2p, "Failed to send Action frame");
3915         }
3916         wpabuf_free(resp);
3917 }
3918
3919
3920 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3921                                       const u8 *sa, const u8 *data, size_t len)
3922 {
3923         struct p2p_message msg;
3924
3925         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3926
3927         if (p2p_parse(data, len, &msg) < 0) {
3928                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3929                 return;
3930         }
3931
3932         if (msg.status == NULL || msg.noa == NULL) {
3933                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3934                 p2p_parse_free(&msg);
3935                 return;
3936         }
3937
3938         if (p2p->cfg->presence_resp) {
3939                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3940                                         msg.noa, msg.noa_len);
3941         }
3942
3943         if (*msg.status) {
3944                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3945                         *msg.status);
3946                 p2p_parse_free(&msg);
3947                 return;
3948         }
3949
3950         p2p_dbg(p2p, "P2P Presence Request was accepted");
3951         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3952                     msg.noa, msg.noa_len);
3953         /* TODO: process NoA */
3954         p2p_parse_free(&msg);
3955 }
3956
3957
3958 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3959 {
3960         struct p2p_data *p2p = eloop_ctx;
3961
3962         if (p2p->ext_listen_interval) {
3963                 /* Schedule next extended listen timeout */
3964                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3965                                        p2p->ext_listen_interval_usec,
3966                                        p2p_ext_listen_timeout, p2p, NULL);
3967         }
3968
3969         if ((p2p->cfg->is_p2p_in_progress &&
3970              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
3971             (p2p->pending_action_state == P2P_PENDING_PD &&
3972              p2p->pd_retries > 0)) {
3973                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
3974                         p2p_state_txt(p2p->state));
3975                 return;
3976         }
3977
3978         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3979                 /*
3980                  * This should not really happen, but it looks like the Listen
3981                  * command may fail is something else (e.g., a scan) was
3982                  * running at an inconvenient time. As a workaround, allow new
3983                  * Extended Listen operation to be started.
3984                  */
3985                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3986                 p2p->ext_listen_only = 0;
3987                 p2p_set_state(p2p, P2P_IDLE);
3988         }
3989
3990         if (p2p->state != P2P_IDLE) {
3991                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3992                 return;
3993         }
3994
3995         p2p_dbg(p2p, "Extended Listen timeout");
3996         p2p->ext_listen_only = 1;
3997         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3998                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3999                 p2p->ext_listen_only = 0;
4000         }
4001 }
4002
4003
4004 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4005                    unsigned int interval)
4006 {
4007         if (period > 65535 || interval > 65535 || period > interval ||
4008             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4009                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4010                         period, interval);
4011                 return -1;
4012         }
4013
4014         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4015
4016         if (interval == 0) {
4017                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4018                 p2p->ext_listen_period = 0;
4019                 p2p->ext_listen_interval = 0;
4020                 return 0;
4021         }
4022
4023         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4024                 period, interval);
4025         p2p->ext_listen_period = period;
4026         p2p->ext_listen_interval = interval;
4027         p2p->ext_listen_interval_sec = interval / 1000;
4028         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4029
4030         eloop_register_timeout(p2p->ext_listen_interval_sec,
4031                                p2p->ext_listen_interval_usec,
4032                                p2p_ext_listen_timeout, p2p, NULL);
4033
4034         return 0;
4035 }
4036
4037
4038 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4039                       const u8 *ie, size_t ie_len)
4040 {
4041         struct p2p_message msg;
4042
4043         if (bssid == NULL || ie == NULL)
4044                 return;
4045
4046         os_memset(&msg, 0, sizeof(msg));
4047         if (p2p_parse_ies(ie, ie_len, &msg))
4048                 return;
4049         if (msg.minor_reason_code == NULL) {
4050                 p2p_parse_free(&msg);
4051                 return;
4052         }
4053
4054         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4055                 " reason_code=%u minor_reason_code=%u",
4056                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4057
4058         p2p_parse_free(&msg);
4059 }
4060
4061
4062 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4063                         const u8 *ie, size_t ie_len)
4064 {
4065         struct p2p_message msg;
4066
4067         if (bssid == NULL || ie == NULL)
4068                 return;
4069
4070         os_memset(&msg, 0, sizeof(msg));
4071         if (p2p_parse_ies(ie, ie_len, &msg))
4072                 return;
4073         if (msg.minor_reason_code == NULL) {
4074                 p2p_parse_free(&msg);
4075                 return;
4076         }
4077
4078         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4079                 " reason_code=%u minor_reason_code=%u",
4080                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4081
4082         p2p_parse_free(&msg);
4083 }
4084
4085
4086 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4087 {
4088         if (enabled) {
4089                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4090                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4091         } else {
4092                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4093                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4094         }
4095 }
4096
4097
4098 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4099                                  u8 *op_channel)
4100 {
4101         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4102 }
4103
4104
4105 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4106                            u8 forced)
4107 {
4108         if (p2p_channel_to_freq(reg_class, channel) < 0)
4109                 return -1;
4110
4111         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4112                 reg_class, channel);
4113
4114         /*
4115          * Listen channel was set in configuration or set by control interface;
4116          * cannot override it.
4117          */
4118         if (p2p->cfg->channel_forced && forced == 0)
4119                 return -1;
4120
4121         if (p2p->state == P2P_IDLE) {
4122                 p2p->cfg->reg_class = reg_class;
4123                 p2p->cfg->channel = channel;
4124                 p2p->cfg->channel_forced = forced;
4125         } else {
4126                 p2p_dbg(p2p, "Defer setting listen channel");
4127                 p2p->pending_reg_class = reg_class;
4128                 p2p->pending_channel = channel;
4129                 p2p->pending_channel_forced = forced;
4130         }
4131
4132         return 0;
4133 }
4134
4135
4136 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4137 {
4138         return p2p->cfg->channel;
4139 }
4140
4141
4142 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4143 {
4144         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4145         if (postfix == NULL) {
4146                 p2p->cfg->ssid_postfix_len = 0;
4147                 return 0;
4148         }
4149         if (len > sizeof(p2p->cfg->ssid_postfix))
4150                 return -1;
4151         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4152         p2p->cfg->ssid_postfix_len = len;
4153         return 0;
4154 }
4155
4156
4157 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4158                          int cfg_op_channel)
4159 {
4160         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4161                 return -1;
4162
4163         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4164                 op_reg_class, op_channel);
4165         p2p->cfg->op_reg_class = op_reg_class;
4166         p2p->cfg->op_channel = op_channel;
4167         p2p->cfg->cfg_op_channel = cfg_op_channel;
4168         return 0;
4169 }
4170
4171
4172 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4173                       const struct p2p_channel *pref_chan)
4174 {
4175         struct p2p_channel *n;
4176
4177         if (pref_chan) {
4178                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4179                 if (n == NULL)
4180                         return -1;
4181                 os_memcpy(n, pref_chan,
4182                           num_pref_chan * sizeof(struct p2p_channel));
4183         } else
4184                 n = NULL;
4185
4186         os_free(p2p->cfg->pref_chan);
4187         p2p->cfg->pref_chan = n;
4188         p2p->cfg->num_pref_chan = num_pref_chan;
4189
4190         return 0;
4191 }
4192
4193
4194 int p2p_set_no_go_freq(struct p2p_data *p2p,
4195                        const struct wpa_freq_range_list *list)
4196 {
4197         struct wpa_freq_range *tmp;
4198
4199         if (list == NULL || list->num == 0) {
4200                 os_free(p2p->no_go_freq.range);
4201                 p2p->no_go_freq.range = NULL;
4202                 p2p->no_go_freq.num = 0;
4203                 return 0;
4204         }
4205
4206         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4207         if (tmp == NULL)
4208                 return -1;
4209         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4210         os_free(p2p->no_go_freq.range);
4211         p2p->no_go_freq.range = tmp;
4212         p2p->no_go_freq.num = list->num;
4213         p2p_dbg(p2p, "Updated no GO chan list");
4214
4215         return 0;
4216 }
4217
4218
4219 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4220                            u8 *iface_addr)
4221 {
4222         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4223         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4224                 return -1;
4225         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4226         return 0;
4227 }
4228
4229
4230 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4231                            u8 *dev_addr)
4232 {
4233         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4234         if (dev == NULL)
4235                 return -1;
4236         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4237         return 0;
4238 }
4239
4240
4241 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4242 {
4243         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4244         if (is_zero_ether_addr(p2p->peer_filter))
4245                 p2p_dbg(p2p, "Disable peer filter");
4246         else
4247                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4248                         MAC2STR(p2p->peer_filter));
4249 }
4250
4251
4252 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4253 {
4254         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4255         if (p2p->cross_connect == enabled)
4256                 return;
4257         p2p->cross_connect = enabled;
4258         /* TODO: may need to tear down any action group where we are GO(?) */
4259 }
4260
4261
4262 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4263 {
4264         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4265         if (dev == NULL)
4266                 return -1;
4267         if (dev->oper_freq <= 0)
4268                 return -1;
4269         return dev->oper_freq;
4270 }
4271
4272
4273 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4274 {
4275         p2p_dbg(p2p, "Intra BSS distribution %s",
4276                 enabled ? "enabled" : "disabled");
4277         p2p->cfg->p2p_intra_bss = enabled;
4278 }
4279
4280
4281 void p2p_update_channel_list(struct p2p_data *p2p,
4282                              const struct p2p_channels *chan,
4283                              const struct p2p_channels *cli_chan)
4284 {
4285         p2p_dbg(p2p, "Update channel list");
4286         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4287         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4288         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4289                   sizeof(struct p2p_channels));
4290         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4291 }
4292
4293
4294 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4295                     const u8 *src, const u8 *bssid, const u8 *buf,
4296                     size_t len, unsigned int wait_time)
4297 {
4298         if (p2p->p2p_scan_running) {
4299                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4300                 if (p2p->after_scan_tx) {
4301                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4302                         os_free(p2p->after_scan_tx);
4303                 }
4304                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4305                                                len);
4306                 if (p2p->after_scan_tx == NULL)
4307                         return -1;
4308                 p2p->after_scan_tx->freq = freq;
4309                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4310                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4311                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4312                 p2p->after_scan_tx->len = len;
4313                 p2p->after_scan_tx->wait_time = wait_time;
4314                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4315                 return 0;
4316         }
4317
4318         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4319                                      buf, len, wait_time);
4320 }
4321
4322
4323 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4324                            int freq_overall)
4325 {
4326         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4327                 freq_24, freq_5, freq_overall);
4328         p2p->best_freq_24 = freq_24;
4329         p2p->best_freq_5 = freq_5;
4330         p2p->best_freq_overall = freq_overall;
4331 }
4332
4333
4334 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4335 {
4336         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4337         p2p->own_freq_preference = freq;
4338 }
4339
4340
4341 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4342 {
4343         if (p2p == NULL || p2p->go_neg_peer == NULL)
4344                 return NULL;
4345         return p2p->go_neg_peer->info.p2p_device_addr;
4346 }
4347
4348
4349 const struct p2p_peer_info *
4350 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4351 {
4352         struct p2p_device *dev;
4353
4354         if (addr) {
4355                 dev = p2p_get_device(p2p, addr);
4356                 if (!dev)
4357                         return NULL;
4358
4359                 if (!next) {
4360                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4361                                 return NULL;
4362
4363                         return &dev->info;
4364                 } else {
4365                         do {
4366                                 dev = dl_list_first(&dev->list,
4367                                                     struct p2p_device,
4368                                                     list);
4369                                 if (!dev || &dev->list == &p2p->devices)
4370                                         return NULL;
4371                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4372                 }
4373         } else {
4374                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4375                 if (!dev)
4376                         return NULL;
4377                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4378                         dev = dl_list_first(&dev->list,
4379                                             struct p2p_device,
4380                                             list);
4381                         if (!dev || &dev->list == &p2p->devices)
4382                                 return NULL;
4383                 }
4384         }
4385
4386         return &dev->info;
4387 }
4388
4389
4390 int p2p_in_progress(struct p2p_data *p2p)
4391 {
4392         if (p2p == NULL)
4393                 return 0;
4394         if (p2p->state == P2P_SEARCH)
4395                 return 2;
4396         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4397 }
4398
4399
4400 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4401                             u8 client_timeout)
4402 {
4403         if (p2p) {
4404                 p2p->go_timeout = go_timeout;
4405                 p2p->client_timeout = client_timeout;
4406         }
4407 }
4408
4409
4410 #ifdef CONFIG_WIFI_DISPLAY
4411
4412 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4413 {
4414         size_t g;
4415         struct p2p_group *group;
4416
4417         for (g = 0; g < p2p->num_groups; g++) {
4418                 group = p2p->groups[g];
4419                 p2p_group_force_beacon_update_ies(group);
4420         }
4421 }
4422
4423
4424 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4425 {
4426         wpabuf_free(p2p->wfd_ie_beacon);
4427         p2p->wfd_ie_beacon = ie;
4428         p2p_update_wfd_ie_groups(p2p);
4429         return 0;
4430 }
4431
4432
4433 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4434 {
4435         wpabuf_free(p2p->wfd_ie_probe_req);
4436         p2p->wfd_ie_probe_req = ie;
4437         return 0;
4438 }
4439
4440
4441 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4442 {
4443         wpabuf_free(p2p->wfd_ie_probe_resp);
4444         p2p->wfd_ie_probe_resp = ie;
4445         p2p_update_wfd_ie_groups(p2p);
4446         return 0;
4447 }
4448
4449
4450 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4451 {
4452         wpabuf_free(p2p->wfd_ie_assoc_req);
4453         p2p->wfd_ie_assoc_req = ie;
4454         return 0;
4455 }
4456
4457
4458 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4459 {
4460         wpabuf_free(p2p->wfd_ie_invitation);
4461         p2p->wfd_ie_invitation = ie;
4462         return 0;
4463 }
4464
4465
4466 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4467 {
4468         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4469         p2p->wfd_ie_prov_disc_req = ie;
4470         return 0;
4471 }
4472
4473
4474 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4475 {
4476         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4477         p2p->wfd_ie_prov_disc_resp = ie;
4478         return 0;
4479 }
4480
4481
4482 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4483 {
4484         wpabuf_free(p2p->wfd_ie_go_neg);
4485         p2p->wfd_ie_go_neg = ie;
4486         return 0;
4487 }
4488
4489
4490 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4491 {
4492         wpabuf_free(p2p->wfd_dev_info);
4493         if (elem) {
4494                 p2p->wfd_dev_info = wpabuf_dup(elem);
4495                 if (p2p->wfd_dev_info == NULL)
4496                         return -1;
4497         } else
4498                 p2p->wfd_dev_info = NULL;
4499
4500         return 0;
4501 }
4502
4503
4504 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4505 {
4506         wpabuf_free(p2p->wfd_assoc_bssid);
4507         if (elem) {
4508                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4509                 if (p2p->wfd_assoc_bssid == NULL)
4510                         return -1;
4511         } else
4512                 p2p->wfd_assoc_bssid = NULL;
4513
4514         return 0;
4515 }
4516
4517
4518 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4519                                   const struct wpabuf *elem)
4520 {
4521         wpabuf_free(p2p->wfd_coupled_sink_info);
4522         if (elem) {
4523                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4524                 if (p2p->wfd_coupled_sink_info == NULL)
4525                         return -1;
4526         } else
4527                 p2p->wfd_coupled_sink_info = NULL;
4528
4529         return 0;
4530 }
4531
4532 #endif /* CONFIG_WIFI_DISPLAY */
4533
4534
4535 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4536                      int max_disc_tu)
4537 {
4538         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4539                 return -1;
4540
4541         p2p->min_disc_int = min_disc_int;
4542         p2p->max_disc_int = max_disc_int;
4543         p2p->max_disc_tu = max_disc_tu;
4544         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4545                 min_disc_int, max_disc_int, max_disc_tu);
4546
4547         return 0;
4548 }
4549
4550
4551 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4552 {
4553         va_list ap;
4554         char buf[500];
4555
4556         if (!p2p->cfg->debug_print)
4557                 return;
4558
4559         va_start(ap, fmt);
4560         vsnprintf(buf, sizeof(buf), fmt, ap);
4561         buf[sizeof(buf) - 1] = '\0';
4562         va_end(ap);
4563         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4564 }
4565
4566
4567 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4568 {
4569         va_list ap;
4570         char buf[500];
4571
4572         if (!p2p->cfg->debug_print)
4573                 return;
4574
4575         va_start(ap, fmt);
4576         vsnprintf(buf, sizeof(buf), fmt, ap);
4577         buf[sizeof(buf) - 1] = '\0';
4578         va_end(ap);
4579         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4580 }
4581
4582
4583 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4584 {
4585         va_list ap;
4586         char buf[500];
4587
4588         if (!p2p->cfg->debug_print)
4589                 return;
4590
4591         va_start(ap, fmt);
4592         vsnprintf(buf, sizeof(buf), fmt, ap);
4593         buf[sizeof(buf) - 1] = '\0';
4594         va_end(ap);
4595         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4596 }
4597
4598
4599 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4600                              void (*peer_callback)(struct p2p_peer_info *peer,
4601                                                    void *user_data),
4602                              void *user_data)
4603 {
4604         struct p2p_device *dev, *n;
4605
4606         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4607                 peer_callback(&dev->info, user_data);
4608         }
4609 }
4610
4611
4612 #ifdef CONFIG_WPS_NFC
4613
4614 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4615                                               int client_freq,
4616                                               const u8 *go_dev_addr,
4617                                               const u8 *ssid, size_t ssid_len)
4618 {
4619         struct wpabuf *buf;
4620         u8 op_class, channel;
4621         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4622
4623         buf = wpabuf_alloc(1000);
4624         if (buf == NULL)
4625                 return NULL;
4626
4627         op_class = p2p->cfg->reg_class;
4628         channel = p2p->cfg->channel;
4629
4630         p2p_buf_add_capability(buf, p2p->dev_capab &
4631                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4632         p2p_buf_add_device_info(buf, p2p, NULL);
4633
4634         if (p2p->num_groups > 0) {
4635                 int freq = p2p_group_get_freq(p2p->groups[0]);
4636                 role = P2P_GO_IN_A_GROUP;
4637                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4638                         p2p_dbg(p2p,
4639                                 "Unknown GO operating frequency %d MHz for NFC handover",
4640                                 freq);
4641                         wpabuf_free(buf);
4642                         return NULL;
4643                 }
4644         } else if (client_freq > 0) {
4645                 role = P2P_CLIENT_IN_A_GROUP;
4646                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4647                         p2p_dbg(p2p,
4648                                 "Unknown client operating frequency %d MHz for NFC handover",
4649                                 client_freq);
4650                         wpabuf_free(buf);
4651                         return NULL;
4652                 }
4653         }
4654
4655         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4656                                        channel, role);
4657
4658         if (p2p->num_groups > 0) {
4659                 /* Limit number of clients to avoid very long message */
4660                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4661                 p2p_group_buf_add_id(p2p->groups[0], buf);
4662         } else if (client_freq > 0 &&
4663                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4664                    ssid && ssid_len > 0) {
4665                 /*
4666                  * Add the optional P2P Group ID to indicate in which group this
4667                  * device is a P2P Client.
4668                  */
4669                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4670         }
4671
4672         return buf;
4673 }
4674
4675
4676 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4677                                            int client_freq,
4678                                            const u8 *go_dev_addr,
4679                                            const u8 *ssid, size_t ssid_len)
4680 {
4681         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4682                                       ssid_len);
4683 }
4684
4685
4686 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4687                                            int client_freq,
4688                                            const u8 *go_dev_addr,
4689                                            const u8 *ssid, size_t ssid_len)
4690 {
4691         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4692                                       ssid_len);
4693 }
4694
4695
4696 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4697                                         struct p2p_nfc_params *params)
4698 {
4699         struct p2p_message msg;
4700         struct p2p_device *dev;
4701         const u8 *p2p_dev_addr;
4702         int freq;
4703         enum p2p_role_indication role;
4704
4705         params->next_step = NO_ACTION;
4706
4707         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4708                                    params->p2p_attr, params->p2p_len, &msg)) {
4709                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4710                 p2p_parse_free(&msg);
4711                 return -1;
4712         }
4713
4714         if (msg.p2p_device_addr)
4715                 p2p_dev_addr = msg.p2p_device_addr;
4716         else if (msg.device_id)
4717                 p2p_dev_addr = msg.device_id;
4718         else {
4719                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4720                 p2p_parse_free(&msg);
4721                 return -1;
4722         }
4723
4724         if (msg.oob_dev_password) {
4725                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4726                           msg.oob_dev_password_len);
4727                 params->oob_dev_pw_len = msg.oob_dev_password_len;
4728         }
4729
4730         dev = p2p_create_device(p2p, p2p_dev_addr);
4731         if (dev == NULL) {
4732                 p2p_parse_free(&msg);
4733                 return -1;
4734         }
4735
4736         params->peer = &dev->info;
4737
4738         os_get_reltime(&dev->last_seen);
4739         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4740         p2p_copy_wps_info(p2p, dev, 0, &msg);
4741
4742         if (!msg.oob_go_neg_channel) {
4743                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4744                 return -1;
4745         }
4746
4747         if (msg.oob_go_neg_channel[3] == 0 &&
4748             msg.oob_go_neg_channel[4] == 0)
4749                 freq = 0;
4750         else
4751                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4752                                            msg.oob_go_neg_channel[4]);
4753         if (freq < 0) {
4754                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4755                 return -1;
4756         }
4757         role = msg.oob_go_neg_channel[5];
4758
4759         if (role == P2P_GO_IN_A_GROUP) {
4760                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4761                 params->go_freq = freq;
4762         } else if (role == P2P_CLIENT_IN_A_GROUP) {
4763                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4764                         freq);
4765                 params->go_freq = freq;
4766         } else
4767                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4768         dev->oob_go_neg_freq = freq;
4769
4770         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4771                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4772                                            p2p->cfg->channel);
4773                 if (freq < 0) {
4774                         p2p_dbg(p2p, "Own listen channel not known");
4775                         return -1;
4776                 }
4777                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4778                 dev->oob_go_neg_freq = freq;
4779         }
4780
4781         if (msg.group_id) {
4782                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4783                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4784                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4785                           params->go_ssid_len);
4786         }
4787
4788         if (dev->flags & P2P_DEV_USER_REJECTED) {
4789                 p2p_dbg(p2p, "Do not report rejected device");
4790                 p2p_parse_free(&msg);
4791                 return 0;
4792         }
4793
4794         if (!(dev->flags & P2P_DEV_REPORTED)) {
4795                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4796                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
4797                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4798         }
4799         p2p_parse_free(&msg);
4800
4801         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4802                 params->next_step = BOTH_GO;
4803         else if (role == P2P_GO_IN_A_GROUP)
4804                 params->next_step = JOIN_GROUP;
4805         else if (role == P2P_CLIENT_IN_A_GROUP) {
4806                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4807                 params->next_step = PEER_CLIENT;
4808         } else if (p2p->num_groups > 0)
4809                 params->next_step = AUTH_JOIN;
4810         else if (params->sel)
4811                 params->next_step = INIT_GO_NEG;
4812         else
4813                 params->next_step = RESP_GO_NEG;
4814
4815         return 0;
4816 }
4817
4818
4819 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4820                                       int go_intent,
4821                                       const u8 *own_interface_addr)
4822 {
4823
4824         p2p->authorized_oob_dev_pw_id = dev_pw_id;
4825         if (dev_pw_id == 0) {
4826                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4827                 return;
4828         }
4829
4830         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4831                 dev_pw_id);
4832
4833         p2p->go_intent = go_intent;
4834         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4835 }
4836
4837 #endif /* CONFIG_WPS_NFC */
4838
4839
4840 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4841 {
4842         if (len < 8 || len > 63)
4843                 return -1;
4844         p2p->cfg->passphrase_len = len;
4845         return 0;
4846 }
4847
4848
4849 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4850 {
4851         p2p->vendor_elem = vendor_elem;
4852 }