src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "crypto/sha256.h"
  17 #include "crypto/crypto.h"
  18 #include "wps/wps_i.h"
  19 #include "p2p_i.h"
  20 #include "p2p.h"
  21
  22
  23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  26                                      const u8 *sa, const u8 *data, size_t len,
  27                                      int rx_freq);
  28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  29                                       const u8 *sa, const u8 *data,
  30                                       size_t len);
  31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  33
  34
  35 /*
  36  * p2p_scan recovery timeout
  37  *
  38  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  39  * timeout for this to avoid hitting P2P timeout unnecessarily.
  40  */
  41 #define P2P_SCAN_TIMEOUT 35
  42
  43 /**
  44  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  45  * entries will be removed
  46  */
  47 #ifndef P2P_PEER_EXPIRATION_AGE
  48 #define P2P_PEER_EXPIRATION_AGE 60
  49 #endif /* P2P_PEER_EXPIRATION_AGE */
  50
  51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  52
  53 static void p2p_expire_peers(struct p2p_data *p2p)
  54 {
  55         struct p2p_device *dev, *n;
  56         struct os_reltime now;
  57         size_t i;
  58
  59         os_get_reltime(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63
  64                 if (dev == p2p->go_neg_peer) {
  65                         /*
  66                          * GO Negotiation is in progress with the peer, so
  67                          * don't expire the peer entry until GO Negotiation
  68                          * fails or times out.
  69                          */
  70                         continue;
  71                 }
  72
  73                 if (p2p->cfg->go_connected &&
  74                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  75                                            dev->info.p2p_device_addr)) {
  76                         /*
  77                          * We are connected as a client to a group in which the
  78                          * peer is the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_reltime(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 for (i = 0; i < p2p->num_groups; i++) {
  85                         if (p2p_group_is_client_connected(
  86                                     p2p->groups[i], dev->info.p2p_device_addr))
  87                                 break;
  88                 }
  89                 if (i < p2p->num_groups) {
  90                         /*
  91                          * The peer is connected as a client in a group where
  92                          * we are the GO, so do not expire the peer entry.
  93                          */
  94                         os_get_reltime(&dev->last_seen);
  95                         continue;
  96                 }
  97
  98                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  99                         MAC2STR(dev->info.p2p_device_addr));
 100                 dl_list_del(&dev->list);
 101                 p2p_device_free(p2p, dev);
 102         }
 103 }
 104
 105
 106 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 107 {
 108         struct p2p_data *p2p = eloop_ctx;
 109         p2p_expire_peers(p2p);
 110         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 111                                p2p_expiration_timeout, p2p, NULL);
 112 }
 113
 114
 115 static const char * p2p_state_txt(int state)
 116 {
 117         switch (state) {
 118         case P2P_IDLE:
 119                 return "IDLE";
 120         case P2P_SEARCH:
 121                 return "SEARCH";
 122         case P2P_CONNECT:
 123                 return "CONNECT";
 124         case P2P_CONNECT_LISTEN:
 125                 return "CONNECT_LISTEN";
 126         case P2P_GO_NEG:
 127                 return "GO_NEG";
 128         case P2P_LISTEN_ONLY:
 129                 return "LISTEN_ONLY";
 130         case P2P_WAIT_PEER_CONNECT:
 131                 return "WAIT_PEER_CONNECT";
 132         case P2P_WAIT_PEER_IDLE:
 133                 return "WAIT_PEER_IDLE";
 134         case P2P_SD_DURING_FIND:
 135                 return "SD_DURING_FIND";
 136         case P2P_PROVISIONING:
 137                 return "PROVISIONING";
 138         case P2P_PD_DURING_FIND:
 139                 return "PD_DURING_FIND";
 140         case P2P_INVITE:
 141                 return "INVITE";
 142         case P2P_INVITE_LISTEN:
 143                 return "INVITE_LISTEN";
 144         default:
 145                 return "?";
 146         }
 147 }
 148
 149
 150 const char * p2p_get_state_txt(struct p2p_data *p2p)
 151 {
 152         return p2p_state_txt(p2p->state);
 153 }
 154
 155
 156 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 157 {
 158         return p2p ? p2p->p2ps_adv_list : NULL;
 159 }
 160
 161
 162 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 163 {
 164         if (p2p && intended_addr)
 165                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 166 }
 167
 168
 169 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 170 {
 171         struct p2p_device *dev = NULL;
 172
 173         if (!addr || !p2p)
 174                 return 0;
 175
 176         dev = p2p_get_device(p2p, addr);
 177         if (dev)
 178                 return dev->wps_prov_info;
 179         else
 180                 return 0;
 181 }
 182
 183
 184 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 185 {
 186         struct p2p_device *dev = NULL;
 187
 188         if (!addr || !p2p)
 189                 return;
 190
 191         dev = p2p_get_device(p2p, addr);
 192         if (dev)
 193                 dev->wps_prov_info = 0;
 194 }
 195
 196
 197 void p2p_set_state(struct p2p_data *p2p, int new_state)
 198 {
 199         p2p_dbg(p2p, "State %s -> %s",
 200                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 201         p2p->state = new_state;
 202
 203         if (new_state == P2P_IDLE && p2p->pending_channel) {
 204                 p2p_dbg(p2p, "Apply change in listen channel");
 205                 p2p->cfg->reg_class = p2p->pending_reg_class;
 206                 p2p->cfg->channel = p2p->pending_channel;
 207                 p2p->pending_reg_class = 0;
 208                 p2p->pending_channel = 0;
 209         }
 210 }
 211
 212
 213 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 214 {
 215         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 216                 p2p_state_txt(p2p->state), sec, usec);
 217         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 218         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 219 }
 220
 221
 222 void p2p_clear_timeout(struct p2p_data *p2p)
 223 {
 224         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 225         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 226 }
 227
 228
 229 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 230 {
 231         struct p2p_go_neg_results res;
 232         struct p2p_device *peer = p2p->go_neg_peer;
 233
 234         if (!peer)
 235                 return;
 236
 237         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 238         if (p2p->state != P2P_SEARCH) {
 239                 /*
 240                  * Clear timeouts related to GO Negotiation if no new p2p_find
 241                  * has been started.
 242                  */
 243                 p2p_clear_timeout(p2p);
 244                 p2p_set_state(p2p, P2P_IDLE);
 245         }
 246
 247         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 248         peer->wps_method = WPS_NOT_READY;
 249         peer->oob_pw_id = 0;
 250         wpabuf_free(peer->go_neg_conf);
 251         peer->go_neg_conf = NULL;
 252         p2p->go_neg_peer = NULL;
 253
 254         os_memset(&res, 0, sizeof(res));
 255         res.status = status;
 256         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 257         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 258         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 259 }
 260
 261
 262 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 263 {
 264         unsigned int r, tu;
 265         int freq;
 266         struct wpabuf *ies;
 267
 268         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 269                 p2p_state_txt(p2p->state));
 270
 271         if (p2p->pending_listen_freq) {
 272                 /* We have a pending p2p_listen request */
 273                 p2p_dbg(p2p, "p2p_listen command pending already");
 274                 return;
 275         }
 276
 277         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 278         if (freq < 0) {
 279                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 280                 return;
 281         }
 282
 283         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 284                 r = 0;
 285         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 286               p2p->min_disc_int) * 100;
 287         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 288                 tu = p2p->max_disc_tu;
 289         if (!dev_disc && tu < 100)
 290                 tu = 100; /* Need to wait in non-device discovery use cases */
 291         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 292                 tu = p2p->cfg->max_listen * 1000 / 1024;
 293
 294         if (tu == 0) {
 295                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 296                 p2p_set_timeout(p2p, 0, 0);
 297                 return;
 298         }
 299
 300         ies = p2p_build_probe_resp_ies(p2p);
 301         if (ies == NULL)
 302                 return;
 303
 304         p2p->pending_listen_freq = freq;
 305         p2p->pending_listen_sec = 0;
 306         p2p->pending_listen_usec = 1024 * tu;
 307
 308         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 309                     ies) < 0) {
 310                 p2p_dbg(p2p, "Failed to start listen mode");
 311                 p2p->pending_listen_freq = 0;
 312         }
 313         wpabuf_free(ies);
 314 }
 315
 316
 317 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 318 {
 319         int freq;
 320         struct wpabuf *ies;
 321
 322         p2p_dbg(p2p, "Going to listen(only) state");
 323
 324         if (p2p->pending_listen_freq) {
 325                 /* We have a pending p2p_listen request */
 326                 p2p_dbg(p2p, "p2p_listen command pending already");
 327                 return -1;
 328         }
 329
 330         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 331         if (freq < 0) {
 332                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 333                 return -1;
 334         }
 335
 336         p2p->pending_listen_sec = timeout / 1000;
 337         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 338
 339         if (p2p->p2p_scan_running) {
 340                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 341                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 342                         return 0;
 343                 }
 344                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 345                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 346                 return 0;
 347         }
 348
 349         ies = p2p_build_probe_resp_ies(p2p);
 350         if (ies == NULL)
 351                 return -1;
 352
 353         p2p->pending_listen_freq = freq;
 354
 355         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 356                 p2p_dbg(p2p, "Failed to start listen mode");
 357                 p2p->pending_listen_freq = 0;
 358                 wpabuf_free(ies);
 359                 return -1;
 360         }
 361         wpabuf_free(ies);
 362
 363         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 364
 365         return 0;
 366 }
 367
 368
 369 static void p2p_device_clear_reported(struct p2p_data *p2p)
 370 {
 371         struct p2p_device *dev;
 372         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 373                 dev->flags &= ~P2P_DEV_REPORTED;
 374                 dev->sd_reqs = 0;
 375         }
 376 }
 377
 378
 379 /**
 380  * p2p_get_device - Fetch a peer entry
 381  * @p2p: P2P module context from p2p_init()
 382  * @addr: P2P Device Address of the peer
 383  * Returns: Pointer to the device entry or %NULL if not found
 384  */
 385 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 386 {
 387         struct p2p_device *dev;
 388         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 389                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 390                         return dev;
 391         }
 392         return NULL;
 393 }
 394
 395
 396 /**
 397  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 398  * @p2p: P2P module context from p2p_init()
 399  * @addr: P2P Interface Address of the peer
 400  * Returns: Pointer to the device entry or %NULL if not found
 401  */
 402 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 403                                              const u8 *addr)
 404 {
 405         struct p2p_device *dev;
 406         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 407                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 408                         return dev;
 409         }
 410         return NULL;
 411 }
 412
 413
 414 /**
 415  * p2p_create_device - Create a peer entry
 416  * @p2p: P2P module context from p2p_init()
 417  * @addr: P2P Device Address of the peer
 418  * Returns: Pointer to the device entry or %NULL on failure
 419  *
 420  * If there is already an entry for the peer, it will be returned instead of
 421  * creating a new one.
 422  */
 423 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 424                                              const u8 *addr)
 425 {
 426         struct p2p_device *dev, *oldest = NULL;
 427         size_t count = 0;
 428
 429         dev = p2p_get_device(p2p, addr);
 430         if (dev)
 431                 return dev;
 432
 433         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 434                 count++;
 435                 if (oldest == NULL ||
 436                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 437                         oldest = dev;
 438         }
 439         if (count + 1 > p2p->cfg->max_peers && oldest) {
 440                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 441                 dl_list_del(&oldest->list);
 442                 p2p_device_free(p2p, oldest);
 443         }
 444
 445         dev = os_zalloc(sizeof(*dev));
 446         if (dev == NULL)
 447                 return NULL;
 448         dl_list_add(&p2p->devices, &dev->list);
 449         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 450
 451         return dev;
 452 }
 453
 454
 455 static void p2p_copy_client_info(struct p2p_device *dev,
 456                                  struct p2p_client_info *cli)
 457 {
 458         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 459         dev->info.device_name[cli->dev_name_len] = '\0';
 460         dev->info.dev_capab = cli->dev_capab;
 461         dev->info.config_methods = cli->config_methods;
 462         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 463         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 464         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 465                   dev->info.wps_sec_dev_type_list_len);
 466 }
 467
 468
 469 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 470                                  const u8 *go_interface_addr, int freq,
 471                                  const u8 *gi, size_t gi_len)
 472 {
 473         struct p2p_group_info info;
 474         size_t c;
 475         struct p2p_device *dev;
 476
 477         if (gi == NULL)
 478                 return 0;
 479
 480         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 481                 return -1;
 482
 483         /*
 484          * Clear old data for this group; if the devices are still in the
 485          * group, the information will be restored in the loop following this.
 486          */
 487         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 488                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 489                               ETH_ALEN) == 0) {
 490                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 491                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 492                 }
 493         }
 494
 495         for (c = 0; c < info.num_clients; c++) {
 496                 struct p2p_client_info *cli = &info.client[c];
 497                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 498                               ETH_ALEN) == 0)
 499                         continue; /* ignore our own entry */
 500                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 501                 if (dev) {
 502                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 503                                           P2P_DEV_PROBE_REQ_ONLY)) {
 504                                 /*
 505                                  * Update information since we have not
 506                                  * received this directly from the client.
 507                                  */
 508                                 p2p_copy_client_info(dev, cli);
 509                         } else {
 510                                 /*
 511                                  * Need to update P2P Client Discoverability
 512                                  * flag since it is valid only in P2P Group
 513                                  * Info attribute.
 514                                  */
 515                                 dev->info.dev_capab &=
 516                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 517                                 dev->info.dev_capab |=
 518                                         cli->dev_capab &
 519                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 520                         }
 521                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 522                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 523                         }
 524                 } else {
 525                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 526                         if (dev == NULL)
 527                                 continue;
 528                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 529                         p2p_copy_client_info(dev, cli);
 530                         dev->oper_freq = freq;
 531                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 532                                             dev->info.p2p_device_addr,
 533                                             &dev->info, 1);
 534                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 535                 }
 536
 537                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 538                           ETH_ALEN);
 539                 os_get_reltime(&dev->last_seen);
 540                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 541                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 542                           ETH_ALEN);
 543         }
 544
 545         return 0;
 546 }
 547
 548
 549 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 550                               int probe_req, const struct p2p_message *msg)
 551 {
 552         os_memcpy(dev->info.device_name, msg->device_name,
 553                   sizeof(dev->info.device_name));
 554
 555         if (msg->manufacturer &&
 556             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 557                 os_memset(dev->info.manufacturer, 0,
 558                           sizeof(dev->info.manufacturer));
 559                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 560                           msg->manufacturer_len);
 561         }
 562
 563         if (msg->model_name &&
 564             msg->model_name_len < sizeof(dev->info.model_name)) {
 565                 os_memset(dev->info.model_name, 0,
 566                           sizeof(dev->info.model_name));
 567                 os_memcpy(dev->info.model_name, msg->model_name,
 568                           msg->model_name_len);
 569         }
 570
 571         if (msg->model_number &&
 572             msg->model_number_len < sizeof(dev->info.model_number)) {
 573                 os_memset(dev->info.model_number, 0,
 574                           sizeof(dev->info.model_number));
 575                 os_memcpy(dev->info.model_number, msg->model_number,
 576                           msg->model_number_len);
 577         }
 578
 579         if (msg->serial_number &&
 580             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 581                 os_memset(dev->info.serial_number, 0,
 582                           sizeof(dev->info.serial_number));
 583                 os_memcpy(dev->info.serial_number, msg->serial_number,
 584                           msg->serial_number_len);
 585         }
 586
 587         if (msg->pri_dev_type)
 588                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 589                           sizeof(dev->info.pri_dev_type));
 590         else if (msg->wps_pri_dev_type)
 591                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 592                           sizeof(dev->info.pri_dev_type));
 593
 594         if (msg->wps_sec_dev_type_list) {
 595                 os_memcpy(dev->info.wps_sec_dev_type_list,
 596                           msg->wps_sec_dev_type_list,
 597                           msg->wps_sec_dev_type_list_len);
 598                 dev->info.wps_sec_dev_type_list_len =
 599                         msg->wps_sec_dev_type_list_len;
 600         }
 601
 602         if (msg->capability) {
 603                 /*
 604                  * P2P Client Discoverability bit is reserved in all frames
 605                  * that use this function, so do not change its value here.
 606                  */
 607                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 608                 dev->info.dev_capab |= msg->capability[0] &
 609                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 610                 dev->info.group_capab = msg->capability[1];
 611         }
 612
 613         if (msg->ext_listen_timing) {
 614                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 615                 dev->ext_listen_interval =
 616                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 617         }
 618
 619         if (!probe_req) {
 620                 u16 new_config_methods;
 621                 new_config_methods = msg->config_methods ?
 622                         msg->config_methods : msg->wps_config_methods;
 623                 if (new_config_methods &&
 624                     dev->info.config_methods != new_config_methods) {
 625                         p2p_dbg(p2p, "Update peer " MACSTR
 626                                 " config_methods 0x%x -> 0x%x",
 627                                 MAC2STR(dev->info.p2p_device_addr),
 628                                 dev->info.config_methods,
 629                                 new_config_methods);
 630                         dev->info.config_methods = new_config_methods;
 631                 }
 632         }
 633 }
 634
 635
 636 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 637                                          size_t ies_len)
 638 {
 639         const u8 *pos, *end;
 640         u8 id, len;
 641
 642         wpabuf_free(dev->info.vendor_elems);
 643         dev->info.vendor_elems = NULL;
 644
 645         end = ies + ies_len;
 646
 647         for (pos = ies; pos + 1 < end; pos += len) {
 648                 id = *pos++;
 649                 len = *pos++;
 650
 651                 if (pos + len > end)
 652                         break;
 653
 654                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 655                         continue;
 656
 657                 if (len >= 4) {
 658                         u32 type = WPA_GET_BE32(pos);
 659
 660                         if (type == WPA_IE_VENDOR_TYPE ||
 661                             type == WMM_IE_VENDOR_TYPE ||
 662                             type == WPS_IE_VENDOR_TYPE ||
 663                             type == P2P_IE_VENDOR_TYPE ||
 664                             type == WFD_IE_VENDOR_TYPE)
 665                                 continue;
 666                 }
 667
 668                 /* Unknown vendor element - make raw IE data available */
 669                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 670                         break;
 671                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 672         }
 673 }
 674
 675
 676 static int p2p_compare_wfd_info(struct p2p_device *dev,
 677                               const struct p2p_message *msg)
 678 {
 679         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 680                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 681                         return 1;
 682
 683                 return os_memcmp(dev->info.wfd_subelems->buf,
 684                                  msg->wfd_subelems->buf,
 685                                  dev->info.wfd_subelems->used);
 686         }
 687         if (dev->info.wfd_subelems || msg->wfd_subelems)
 688                 return 1;
 689
 690         return 0;
 691 }
 692
 693
 694 /**
 695  * p2p_add_device - Add peer entries based on scan results or P2P frames
 696  * @p2p: P2P module context from p2p_init()
 697  * @addr: Source address of Beacon or Probe Response frame (may be either
 698  *      P2P Device Address or P2P Interface Address)
 699  * @level: Signal level (signal strength of the received frame from the peer)
 700  * @freq: Frequency on which the Beacon or Probe Response frame was received
 701  * @rx_time: Time when the result was received
 702  * @ies: IEs from the Beacon or Probe Response frame
 703  * @ies_len: Length of ies buffer in octets
 704  * @scan_res: Whether this was based on scan results
 705  * Returns: 0 on success, -1 on failure
 706  *
 707  * If the scan result is for a GO, the clients in the group will also be added
 708  * to the peer table. This function can also be used with some other frames
 709  * like Provision Discovery Request that contains P2P Capability and P2P Device
 710  * Info attributes.
 711  */
 712 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 713                    struct os_reltime *rx_time, int level, const u8 *ies,
 714                    size_t ies_len, int scan_res)
 715 {
 716         struct p2p_device *dev;
 717         struct p2p_message msg;
 718         const u8 *p2p_dev_addr;
 719         int wfd_changed;
 720         int i;
 721         struct os_reltime time_now;
 722
 723         os_memset(&msg, 0, sizeof(msg));
 724         if (p2p_parse_ies(ies, ies_len, &msg)) {
 725                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 726                 p2p_parse_free(&msg);
 727                 return -1;
 728         }
 729
 730         if (msg.p2p_device_addr)
 731                 p2p_dev_addr = msg.p2p_device_addr;
 732         else if (msg.device_id)
 733                 p2p_dev_addr = msg.device_id;
 734         else {
 735                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 736                 p2p_parse_free(&msg);
 737                 return -1;
 738         }
 739
 740         if (!is_zero_ether_addr(p2p->peer_filter) &&
 741             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 742                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 743                         " due to peer filter", MAC2STR(p2p_dev_addr));
 744                 p2p_parse_free(&msg);
 745                 return 0;
 746         }
 747
 748         dev = p2p_create_device(p2p, p2p_dev_addr);
 749         if (dev == NULL) {
 750                 p2p_parse_free(&msg);
 751                 return -1;
 752         }
 753
 754         if (rx_time == NULL) {
 755                 os_get_reltime(&time_now);
 756                 rx_time = &time_now;
 757         }
 758
 759         /*
 760          * Update the device entry only if the new peer
 761          * entry is newer than the one previously stored.
 762          */
 763         if (dev->last_seen.sec > 0 &&
 764             os_reltime_before(rx_time, &dev->last_seen)) {
 765                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 766                         (unsigned int) rx_time->sec,
 767                         (unsigned int) rx_time->usec,
 768                         (unsigned int) dev->last_seen.sec,
 769                         (unsigned int) dev->last_seen.usec);
 770                 p2p_parse_free(&msg);
 771                 return -1;
 772         }
 773
 774         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 775
 776         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 777
 778         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 779                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 780         if (msg.ssid &&
 781             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 782             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 783              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 784              != 0)) {
 785                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 786                 dev->oper_ssid_len = msg.ssid[1];
 787         }
 788
 789         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 790                 wpabuf_free(dev->info.p2ps_instance);
 791                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 792                         msg.adv_service_instance, msg.adv_service_instance_len);
 793         }
 794
 795         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 796             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 797                 int ds_freq;
 798                 if (*msg.ds_params == 14)
 799                         ds_freq = 2484;
 800                 else
 801                         ds_freq = 2407 + *msg.ds_params * 5;
 802                 if (freq != ds_freq) {
 803                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 804                                 freq, ds_freq);
 805                         freq = ds_freq;
 806                 }
 807         }
 808
 809         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 810                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 811                         MACSTR " %d -> %d MHz (DS param %d)",
 812                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 813                         freq, msg.ds_params ? *msg.ds_params : -1);
 814         }
 815         if (scan_res) {
 816                 dev->listen_freq = freq;
 817                 if (msg.group_info)
 818                         dev->oper_freq = freq;
 819         }
 820         dev->info.level = level;
 821
 822         p2p_copy_wps_info(p2p, dev, 0, &msg);
 823
 824         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 825                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 826                 dev->info.wps_vendor_ext[i] = NULL;
 827         }
 828
 829         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 830                 if (msg.wps_vendor_ext[i] == NULL)
 831                         break;
 832                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 833                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 834                 if (dev->info.wps_vendor_ext[i] == NULL)
 835                         break;
 836         }
 837
 838         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 839
 840         if (msg.wfd_subelems) {
 841                 wpabuf_free(dev->info.wfd_subelems);
 842                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 843         }
 844
 845         if (scan_res) {
 846                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 847                                       msg.group_info, msg.group_info_len);
 848         }
 849
 850         p2p_parse_free(&msg);
 851
 852         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 853
 854         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 855             (!msg.adv_service_instance ||
 856              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 857                 return 0;
 858
 859         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 860                 freq, (unsigned int) rx_time->sec,
 861                 (unsigned int) rx_time->usec);
 862         if (dev->flags & P2P_DEV_USER_REJECTED) {
 863                 p2p_dbg(p2p, "Do not report rejected device");
 864                 return 0;
 865         }
 866
 867         if (dev->info.config_methods == 0 &&
 868             (freq == 2412 || freq == 2437 || freq == 2462)) {
 869                 /*
 870                  * If we have only seen a Beacon frame from a GO, we do not yet
 871                  * know what WPS config methods it supports. Since some
 872                  * applications use config_methods value from P2P-DEVICE-FOUND
 873                  * events, postpone reporting this peer until we've fully
 874                  * discovered its capabilities.
 875                  *
 876                  * At least for now, do this only if the peer was detected on
 877                  * one of the social channels since that peer can be easily be
 878                  * found again and there are no limitations of having to use
 879                  * passive scan on this channels, so this can be done through
 880                  * Probe Response frame that includes the config_methods
 881                  * information.
 882                  */
 883                 p2p_dbg(p2p, "Do not report peer " MACSTR
 884                         " with unknown config methods", MAC2STR(addr));
 885                 return 0;
 886         }
 887
 888         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 889                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 890         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 891
 892         if (msg.adv_service_instance)
 893                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 894
 895         return 0;
 896 }
 897
 898
 899 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 900 {
 901         int i;
 902
 903         if (p2p->go_neg_peer == dev) {
 904                 /*
 905                  * If GO Negotiation is in progress, report that it has failed.
 906                  */
 907                 p2p_go_neg_failed(p2p, -1);
 908         }
 909         if (p2p->invite_peer == dev)
 910                 p2p->invite_peer = NULL;
 911         if (p2p->sd_peer == dev)
 912                 p2p->sd_peer = NULL;
 913         if (p2p->pending_client_disc_go == dev)
 914                 p2p->pending_client_disc_go = NULL;
 915
 916         /* dev_lost() device, but only if it was previously dev_found() */
 917         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 918                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 919                                    dev->info.p2p_device_addr);
 920
 921         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 922                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 923                 dev->info.wps_vendor_ext[i] = NULL;
 924         }
 925
 926         wpabuf_free(dev->info.wfd_subelems);
 927         wpabuf_free(dev->info.vendor_elems);
 928         wpabuf_free(dev->go_neg_conf);
 929         wpabuf_free(dev->info.p2ps_instance);
 930
 931         os_free(dev);
 932 }
 933
 934
 935 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 936 {
 937         struct p2p_channels *c;
 938         struct p2p_reg_class *cla;
 939         size_t cl, ch;
 940         int found = 0;
 941         u8 reg_class;
 942         u8 channel;
 943         int freq;
 944
 945         c = &p2p->cfg->channels;
 946         for (cl = 0; cl < c->reg_classes; cl++) {
 947                 cla = &c->reg_class[cl];
 948                 if (cla->reg_class != p2p->last_prog_scan_class)
 949                         continue;
 950                 for (ch = 0; ch < cla->channels; ch++) {
 951                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 952                                 found = 1;
 953                                 break;
 954                         }
 955                 }
 956                 if (found)
 957                         break;
 958         }
 959
 960         if (!found) {
 961                 /* Start from beginning */
 962                 reg_class = c->reg_class[0].reg_class;
 963                 channel = c->reg_class[0].channel[0];
 964         } else {
 965                 /* Pick the next channel */
 966                 ch++;
 967                 if (ch == cla->channels) {
 968                         cl++;
 969                         if (cl == c->reg_classes)
 970                                 cl = 0;
 971                         ch = 0;
 972                 }
 973                 reg_class = c->reg_class[cl].reg_class;
 974                 channel = c->reg_class[cl].channel[ch];
 975         }
 976
 977         freq = p2p_channel_to_freq(reg_class, channel);
 978         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 979                 reg_class, channel, freq);
 980         p2p->last_prog_scan_class = reg_class;
 981         p2p->last_prog_scan_chan = channel;
 982
 983         if (freq == 2412 || freq == 2437 || freq == 2462)
 984                 return 0; /* No need to add social channels */
 985         return freq;
 986 }
 987
 988
 989 static void p2p_search(struct p2p_data *p2p)
 990 {
 991         int freq = 0;
 992         enum p2p_scan_type type;
 993         u16 pw_id = DEV_PW_DEFAULT;
 994         int res;
 995
 996         if (p2p->drv_in_listen) {
 997                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 998                 return;
 999         }
1000         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1001
1002         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1003             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1004                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1005                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1006         } else {
1007                 type = P2P_SCAN_SOCIAL;
1008                 p2p_dbg(p2p, "Starting search");
1009         }
1010
1011         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1012                                  p2p->num_req_dev_types, p2p->req_dev_types,
1013                                  p2p->find_dev_id, pw_id);
1014         if (res < 0) {
1015                 p2p_dbg(p2p, "Scan request schedule failed");
1016                 p2p_continue_find(p2p);
1017         }
1018 }
1019
1020
1021 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1022 {
1023         struct p2p_data *p2p = eloop_ctx;
1024         p2p_dbg(p2p, "Find timeout -> stop");
1025         p2p_stop_find(p2p);
1026 }
1027
1028
1029 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1030 {
1031         if (status != 0) {
1032                 p2p_dbg(p2p, "Scan request failed");
1033                 /* Do continue find even for the first p2p_find_scan */
1034                 p2p_continue_find(p2p);
1035         } else {
1036                 p2p_dbg(p2p, "Running p2p_scan");
1037                 p2p->p2p_scan_running = 1;
1038                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1039                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1040                                        p2p, NULL);
1041         }
1042 }
1043
1044
1045 static int p2p_run_after_scan(struct p2p_data *p2p)
1046 {
1047         struct p2p_device *dev;
1048         enum p2p_after_scan op;
1049
1050         if (p2p->after_scan_tx) {
1051                 p2p->after_scan_tx_in_progress = 1;
1052                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1053                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1054                                       p2p->after_scan_tx->freq,
1055                                       p2p->after_scan_tx->dst,
1056                                       p2p->after_scan_tx->src,
1057                                       p2p->after_scan_tx->bssid,
1058                                       (u8 *) (p2p->after_scan_tx + 1),
1059                                       p2p->after_scan_tx->len,
1060                                       p2p->after_scan_tx->wait_time);
1061                 os_free(p2p->after_scan_tx);
1062                 p2p->after_scan_tx = NULL;
1063                 return 1;
1064         }
1065
1066         op = p2p->start_after_scan;
1067         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1068         switch (op) {
1069         case P2P_AFTER_SCAN_NOTHING:
1070                 break;
1071         case P2P_AFTER_SCAN_LISTEN:
1072                 p2p_dbg(p2p, "Start previously requested Listen state");
1073                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1074                            p2p->pending_listen_usec / 1000);
1075                 return 1;
1076         case P2P_AFTER_SCAN_CONNECT:
1077                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1078                         MAC2STR(p2p->after_scan_peer));
1079                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1080                 if (dev == NULL) {
1081                         p2p_dbg(p2p, "Peer not known anymore");
1082                         break;
1083                 }
1084                 p2p_connect_send(p2p, dev);
1085                 return 1;
1086         }
1087
1088         return 0;
1089 }
1090
1091
1092 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1093 {
1094         struct p2p_data *p2p = eloop_ctx;
1095         int running;
1096         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1097         running = p2p->p2p_scan_running;
1098         /* Make sure we recover from missed scan results callback */
1099         p2p->p2p_scan_running = 0;
1100
1101         if (running)
1102                 p2p_run_after_scan(p2p);
1103 }
1104
1105
1106 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1107 {
1108         p2p->num_req_dev_types = 0;
1109         os_free(p2p->req_dev_types);
1110         p2p->req_dev_types = NULL;
1111 }
1112
1113
1114 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1115 {
1116         u8 buf[SHA256_MAC_LEN];
1117         char str_buf[256];
1118         const u8 *adv_array;
1119         size_t i, adv_len;
1120
1121         if (!str || !hash)
1122                 return 0;
1123
1124         if (!str[0]) {
1125                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1126                 return 1;
1127         }
1128
1129         adv_array = (u8 *) str_buf;
1130         adv_len = os_strlen(str);
1131
1132         for (i = 0; str[i] && i < adv_len; i++) {
1133                 if (str[i] >= 'A' && str[i] <= 'Z')
1134                         str_buf[i] = str[i] - 'A' + 'a';
1135                 else
1136                         str_buf[i] = str[i];
1137         }
1138
1139         if (sha256_vector(1, &adv_array, &adv_len, buf))
1140                 return 0;
1141
1142         os_memcpy(hash, buf, P2PS_HASH_LEN);
1143         return 1;
1144 }
1145
1146
1147 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1148              enum p2p_discovery_type type,
1149              unsigned int num_req_dev_types, const u8 *req_dev_types,
1150              const u8 *dev_id, unsigned int search_delay,
1151              u8 seek_count, const char **seek, int freq)
1152 {
1153         int res;
1154
1155         p2p_dbg(p2p, "Starting find (type=%d)", type);
1156         os_get_reltime(&p2p->find_start);
1157         if (p2p->p2p_scan_running) {
1158                 p2p_dbg(p2p, "p2p_scan is already running");
1159         }
1160
1161         p2p_free_req_dev_types(p2p);
1162         if (req_dev_types && num_req_dev_types) {
1163                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1164                                                WPS_DEV_TYPE_LEN);
1165                 if (p2p->req_dev_types == NULL)
1166                         return -1;
1167                 os_memcpy(p2p->req_dev_types, req_dev_types,
1168                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1169                 p2p->num_req_dev_types = num_req_dev_types;
1170         }
1171
1172         if (dev_id) {
1173                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1174                 p2p->find_dev_id = p2p->find_dev_id_buf;
1175         } else
1176                 p2p->find_dev_id = NULL;
1177
1178         if (seek_count == 0 || !seek) {
1179                 /* Not an ASP search */
1180                 p2p->p2ps_seek = 0;
1181         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1182                 /*
1183                  * An empty seek string means no hash values, but still an ASP
1184                  * search.
1185                  */
1186                 p2p->p2ps_seek_count = 0;
1187                 p2p->p2ps_seek = 1;
1188         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1189                 u8 buf[P2PS_HASH_LEN];
1190                 int i;
1191
1192                 p2p->p2ps_seek_count = seek_count;
1193                 for (i = 0; i < seek_count; i++) {
1194                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1195                                 continue;
1196
1197                         /* If asking for wildcard, don't do others */
1198                         if (os_memcmp(buf, p2p->wild_card_hash,
1199                                       P2PS_HASH_LEN) == 0) {
1200                                 p2p->p2ps_seek_count = 0;
1201                                 break;
1202                         }
1203
1204                         os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1205                                   P2PS_HASH_LEN);
1206                 }
1207                 p2p->p2ps_seek = 1;
1208         } else {
1209                 p2p->p2ps_seek_count = 0;
1210                 p2p->p2ps_seek = 1;
1211         }
1212
1213         /* Special case to perform wildcard search */
1214         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1215                 p2p->p2ps_seek_count = 1;
1216                 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1217         }
1218
1219         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1220         p2p_clear_timeout(p2p);
1221         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1222         p2p->find_type = type;
1223         p2p_device_clear_reported(p2p);
1224         p2p_set_state(p2p, P2P_SEARCH);
1225         p2p->search_delay = search_delay;
1226         p2p->in_search_delay = 0;
1227         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1228         p2p->last_p2p_find_timeout = timeout;
1229         if (timeout)
1230                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1231                                        p2p, NULL);
1232         switch (type) {
1233         case P2P_FIND_START_WITH_FULL:
1234                 if (freq > 0) {
1235                         /*
1236                          * Start with the specified channel and then move to
1237                          * social channels only scans.
1238                          */
1239                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1240                                                  P2P_SCAN_SPECIFIC, freq,
1241                                                  p2p->num_req_dev_types,
1242                                                  p2p->req_dev_types, dev_id,
1243                                                  DEV_PW_DEFAULT);
1244                         break;
1245                 }
1246                 /* fall through */
1247         case P2P_FIND_PROGRESSIVE:
1248                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1249                                          p2p->num_req_dev_types,
1250                                          p2p->req_dev_types, dev_id,
1251                                          DEV_PW_DEFAULT);
1252                 break;
1253         case P2P_FIND_ONLY_SOCIAL:
1254                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1255                                          p2p->num_req_dev_types,
1256                                          p2p->req_dev_types, dev_id,
1257                                          DEV_PW_DEFAULT);
1258                 break;
1259         default:
1260                 return -1;
1261         }
1262
1263         if (res != 0 && p2p->p2p_scan_running) {
1264                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1265                 /* wait for the previous p2p_scan to complete */
1266                 res = 0; /* do not report failure */
1267         } else if (res != 0) {
1268                 p2p_dbg(p2p, "Failed to start p2p_scan");
1269                 p2p_set_state(p2p, P2P_IDLE);
1270                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1271         }
1272
1273         return res;
1274 }
1275
1276
1277 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1278 {
1279         p2p_dbg(p2p, "Stopping find");
1280         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1281         p2p_clear_timeout(p2p);
1282         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1283                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1284
1285         p2p->p2ps_seek_count = 0;
1286
1287         p2p_set_state(p2p, P2P_IDLE);
1288         p2p_free_req_dev_types(p2p);
1289         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1290         if (p2p->go_neg_peer)
1291                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1292         p2p->go_neg_peer = NULL;
1293         p2p->sd_peer = NULL;
1294         p2p->invite_peer = NULL;
1295         p2p_stop_listen_for_freq(p2p, freq);
1296         p2p->send_action_in_progress = 0;
1297 }
1298
1299
1300 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1301 {
1302         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1303                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1304                 return;
1305         }
1306         if (p2p->in_listen) {
1307                 p2p->in_listen = 0;
1308                 p2p_clear_timeout(p2p);
1309         }
1310         if (p2p->drv_in_listen) {
1311                 /*
1312                  * The driver may not deliver callback to p2p_listen_end()
1313                  * when the operation gets canceled, so clear the internal
1314                  * variable that is tracking driver state.
1315                  */
1316                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1317                 p2p->drv_in_listen = 0;
1318         }
1319         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1320 }
1321
1322
1323 void p2p_stop_listen(struct p2p_data *p2p)
1324 {
1325         if (p2p->state != P2P_LISTEN_ONLY) {
1326                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1327                 return;
1328         }
1329
1330         p2p_stop_listen_for_freq(p2p, 0);
1331         p2p_set_state(p2p, P2P_IDLE);
1332 }
1333
1334
1335 void p2p_stop_find(struct p2p_data *p2p)
1336 {
1337         p2p->pending_listen_freq = 0;
1338         p2p_stop_find_for_freq(p2p, 0);
1339 }
1340
1341
1342 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1343                                     unsigned int force_freq,
1344                                     unsigned int pref_freq, int go)
1345 {
1346         u8 op_class, op_channel;
1347         unsigned int freq = force_freq ? force_freq : pref_freq;
1348
1349         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1350                 force_freq, pref_freq, go);
1351         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1352                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1353                 return -1;
1354         }
1355
1356         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1357             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1358                                           op_channel))) {
1359                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1360                         freq, op_class, op_channel);
1361                 return -1;
1362         }
1363
1364         p2p->op_reg_class = op_class;
1365         p2p->op_channel = op_channel;
1366
1367         if (force_freq) {
1368                 p2p->channels.reg_classes = 1;
1369                 p2p->channels.reg_class[0].channels = 1;
1370                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1371                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1372         } else {
1373                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1374                           sizeof(struct p2p_channels));
1375         }
1376
1377         return 0;
1378 }
1379
1380
1381 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1382 {
1383         u8 op_class, op_channel;
1384         const int op_classes_5ghz[] = { 124, 115, 0 };
1385         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1386         const int op_classes_vht[] = { 128, 0 };
1387
1388         p2p_dbg(p2p, "Prepare channel best");
1389
1390         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1391             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1392             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1393             == 0) {
1394                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1395                 p2p->op_reg_class = op_class;
1396                 p2p->op_channel = op_channel;
1397         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1398                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1399                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1400                    == 0) {
1401                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1402                 p2p->op_reg_class = op_class;
1403                 p2p->op_channel = op_channel;
1404         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1405                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1406                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1407                                        &op_channel) == 0) {
1408                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1409                 p2p->op_reg_class = op_class;
1410                 p2p->op_channel = op_channel;
1411         } else if (p2p->cfg->num_pref_chan > 0 &&
1412                    p2p_channels_includes(&p2p->cfg->channels,
1413                                          p2p->cfg->pref_chan[0].op_class,
1414                                          p2p->cfg->pref_chan[0].chan)) {
1415                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1416                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1417                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1418         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1419                                       &p2p->op_reg_class, &p2p->op_channel) ==
1420                    0) {
1421                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1422                         p2p->op_reg_class, p2p->op_channel);
1423         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1424                                       &p2p->op_reg_class, &p2p->op_channel) ==
1425                    0) {
1426                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1427                         p2p->op_reg_class, p2p->op_channel);
1428         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1429                                       &p2p->op_reg_class, &p2p->op_channel) ==
1430                    0) {
1431                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1432                         p2p->op_reg_class, p2p->op_channel);
1433         } else if (p2p_channels_includes(&p2p->cfg->channels,
1434                                          p2p->cfg->op_reg_class,
1435                                          p2p->cfg->op_channel)) {
1436                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1437                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1438                 p2p->op_channel = p2p->cfg->op_channel;
1439         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1440                                              &p2p->op_reg_class,
1441                                              &p2p->op_channel) == 0) {
1442                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1443                         p2p->op_reg_class, p2p->op_channel);
1444         } else {
1445                 /* Select any random available channel from the first available
1446                  * operating class */
1447                 p2p_channel_select(&p2p->cfg->channels, NULL,
1448                                    &p2p->op_reg_class,
1449                                    &p2p->op_channel);
1450                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1451                         p2p->op_channel, p2p->op_reg_class);
1452         }
1453
1454         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1455                   sizeof(struct p2p_channels));
1456 }
1457
1458
1459 /**
1460  * p2p_prepare_channel - Select operating channel for GO Negotiation
1461  * @p2p: P2P module context from p2p_init()
1462  * @dev: Selected peer device
1463  * @force_freq: Forced frequency in MHz or 0 if not forced
1464  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1465  * @go: Whether the local end will be forced to be GO
1466  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1467  *
1468  * This function is used to do initial operating channel selection for GO
1469  * Negotiation prior to having received peer information. The selected channel
1470  * may be further optimized in p2p_reselect_channel() once the peer information
1471  * is available.
1472  */
1473 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1474                         unsigned int force_freq, unsigned int pref_freq, int go)
1475 {
1476         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1477                 force_freq, pref_freq, go);
1478         if (force_freq || pref_freq) {
1479                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1480                     0)
1481                         return -1;
1482         } else {
1483                 p2p_prepare_channel_best(p2p);
1484         }
1485         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1486         if (go)
1487                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1488         else if (!force_freq)
1489                 p2p_channels_union_inplace(&p2p->channels,
1490                                            &p2p->cfg->cli_channels);
1491         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1492
1493         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1494                 p2p->op_reg_class, p2p->op_channel,
1495                 force_freq ? " (forced)" : "");
1496
1497         if (force_freq)
1498                 dev->flags |= P2P_DEV_FORCE_FREQ;
1499         else
1500                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1501
1502         return 0;
1503 }
1504
1505
1506 static void p2p_set_dev_persistent(struct p2p_device *dev,
1507                                    int persistent_group)
1508 {
1509         switch (persistent_group) {
1510         case 0:
1511                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1512                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1513                 break;
1514         case 1:
1515                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1516                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1517                 break;
1518         case 2:
1519                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1520                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1521                 break;
1522         }
1523 }
1524
1525
1526 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1527                 enum p2p_wps_method wps_method,
1528                 int go_intent, const u8 *own_interface_addr,
1529                 unsigned int force_freq, int persistent_group,
1530                 const u8 *force_ssid, size_t force_ssid_len,
1531                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1532 {
1533         struct p2p_device *dev;
1534
1535         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1536                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1537                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1538                 "oob_pw_id=%u",
1539                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1540                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1541
1542         dev = p2p_get_device(p2p, peer_addr);
1543         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1544                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1545                         MAC2STR(peer_addr));
1546                 return -1;
1547         }
1548
1549         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1550                                 go_intent == 15) < 0)
1551                 return -1;
1552
1553         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1554                 if (!(dev->info.dev_capab &
1555                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1556                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1557                                 " that is in a group and is not discoverable",
1558                                 MAC2STR(peer_addr));
1559                         return -1;
1560                 }
1561                 if (dev->oper_freq <= 0) {
1562                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1563                                 " with incomplete information",
1564                                 MAC2STR(peer_addr));
1565                         return -1;
1566                 }
1567
1568                 /*
1569                  * First, try to connect directly. If the peer does not
1570                  * acknowledge frames, assume it is sleeping and use device
1571                  * discoverability via the GO at that point.
1572                  */
1573         }
1574
1575         p2p->ssid_set = 0;
1576         if (force_ssid) {
1577                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1578                                   force_ssid, force_ssid_len);
1579                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1580                 p2p->ssid_len = force_ssid_len;
1581                 p2p->ssid_set = 1;
1582         }
1583
1584         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1585         dev->flags &= ~P2P_DEV_USER_REJECTED;
1586         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1587         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1588         if (pd_before_go_neg)
1589                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1590         else {
1591                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1592                 /*
1593                  * Assign dialog token and tie breaker here to use the same
1594                  * values in each retry within the same GO Negotiation exchange.
1595                  */
1596                 dev->dialog_token++;
1597                 if (dev->dialog_token == 0)
1598                         dev->dialog_token = 1;
1599                 dev->tie_breaker = p2p->next_tie_breaker;
1600                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1601         }
1602         dev->connect_reqs = 0;
1603         dev->go_neg_req_sent = 0;
1604         dev->go_state = UNKNOWN_GO;
1605         p2p_set_dev_persistent(dev, persistent_group);
1606         p2p->go_intent = go_intent;
1607         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1608
1609         if (p2p->state != P2P_IDLE)
1610                 p2p_stop_find(p2p);
1611
1612         if (p2p->after_scan_tx) {
1613                 /*
1614                  * We need to drop the pending frame to avoid issues with the
1615                  * new GO Negotiation, e.g., when the pending frame was from a
1616                  * previous attempt at starting a GO Negotiation.
1617                  */
1618                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1619                 os_free(p2p->after_scan_tx);
1620                 p2p->after_scan_tx = NULL;
1621         }
1622
1623         dev->wps_method = wps_method;
1624         dev->oob_pw_id = oob_pw_id;
1625         dev->status = P2P_SC_SUCCESS;
1626
1627         if (p2p->p2p_scan_running) {
1628                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1629                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1630                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1631                 return 0;
1632         }
1633         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1634
1635         return p2p_connect_send(p2p, dev);
1636 }
1637
1638
1639 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1640                   enum p2p_wps_method wps_method,
1641                   int go_intent, const u8 *own_interface_addr,
1642                   unsigned int force_freq, int persistent_group,
1643                   const u8 *force_ssid, size_t force_ssid_len,
1644                   unsigned int pref_freq, u16 oob_pw_id)
1645 {
1646         struct p2p_device *dev;
1647
1648         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1649                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1650                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1651                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1652                 wps_method, persistent_group, oob_pw_id);
1653
1654         dev = p2p_get_device(p2p, peer_addr);
1655         if (dev == NULL) {
1656                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1657                         MAC2STR(peer_addr));
1658                 return -1;
1659         }
1660
1661         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1662                                 15) < 0)
1663                 return -1;
1664
1665         p2p->ssid_set = 0;
1666         if (force_ssid) {
1667                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1668                                   force_ssid, force_ssid_len);
1669                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1670                 p2p->ssid_len = force_ssid_len;
1671                 p2p->ssid_set = 1;
1672         }
1673
1674         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1675         dev->flags &= ~P2P_DEV_USER_REJECTED;
1676         dev->go_neg_req_sent = 0;
1677         dev->go_state = UNKNOWN_GO;
1678         p2p_set_dev_persistent(dev, persistent_group);
1679         p2p->go_intent = go_intent;
1680         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1681
1682         dev->wps_method = wps_method;
1683         dev->oob_pw_id = oob_pw_id;
1684         dev->status = P2P_SC_SUCCESS;
1685
1686         return 0;
1687 }
1688
1689
1690 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1691                       struct p2p_device *dev, struct p2p_message *msg)
1692 {
1693         os_get_reltime(&dev->last_seen);
1694
1695         p2p_copy_wps_info(p2p, dev, 0, msg);
1696
1697         if (msg->listen_channel) {
1698                 int freq;
1699                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1700                                            msg->listen_channel[4]);
1701                 if (freq < 0) {
1702                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1703                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1704                                 msg->listen_channel[0],
1705                                 msg->listen_channel[1],
1706                                 msg->listen_channel[2],
1707                                 msg->listen_channel[3],
1708                                 msg->listen_channel[4]);
1709                 } else {
1710                         p2p_dbg(p2p, "Update peer " MACSTR
1711                                 " Listen channel: %u -> %u MHz",
1712                                 MAC2STR(dev->info.p2p_device_addr),
1713                                 dev->listen_freq, freq);
1714                         dev->listen_freq = freq;
1715                 }
1716         }
1717
1718         if (msg->wfd_subelems) {
1719                 wpabuf_free(dev->info.wfd_subelems);
1720                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1721         }
1722
1723         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1724                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1725                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1726         } else {
1727                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1728                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1729                         "listen_freq=%d",
1730                         MAC2STR(dev->info.p2p_device_addr),
1731                         dev->info.dev_capab, dev->info.group_capab,
1732                         dev->info.device_name, dev->listen_freq);
1733         }
1734
1735         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1736
1737         if (dev->flags & P2P_DEV_USER_REJECTED) {
1738                 p2p_dbg(p2p, "Do not report rejected device");
1739                 return;
1740         }
1741
1742         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1743                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1744         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1745 }
1746
1747
1748 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1749 {
1750         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1751         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1752         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1753                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1754         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1755 }
1756
1757
1758 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1759 {
1760         if (p2p->ssid_set) {
1761                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1762                 params->ssid_len = p2p->ssid_len;
1763         } else {
1764                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1765         }
1766         p2p->ssid_set = 0;
1767
1768         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1769         return 0;
1770 }
1771
1772
1773 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1774 {
1775         struct p2p_go_neg_results res;
1776         int go = peer->go_state == LOCAL_GO;
1777         struct p2p_channels intersection;
1778
1779         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1780                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1781
1782         os_memset(&res, 0, sizeof(res));
1783         res.role_go = go;
1784         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1785         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1786         res.wps_method = peer->wps_method;
1787         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1788                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1789                         res.persistent_group = 2;
1790                 else
1791                         res.persistent_group = 1;
1792         }
1793
1794         if (go) {
1795                 /* Setup AP mode for WPS provisioning */
1796                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1797                                                p2p->op_channel);
1798                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1799                 res.ssid_len = p2p->ssid_len;
1800                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1801         } else {
1802                 res.freq = peer->oper_freq;
1803                 if (p2p->ssid_len) {
1804                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1805                         res.ssid_len = p2p->ssid_len;
1806                 }
1807         }
1808
1809         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1810         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1811         p2p_channels_intersect(&p2p->channels, &peer->channels,
1812                                &intersection);
1813         if (go) {
1814                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1815                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1816                                   &intersection);
1817         }
1818
1819         p2p_channels_to_freqs(&intersection, res.freq_list,
1820                               P2P_MAX_CHANNELS);
1821
1822         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1823
1824         p2p_clear_timeout(p2p);
1825         p2p->ssid_set = 0;
1826         peer->go_neg_req_sent = 0;
1827         peer->wps_method = WPS_NOT_READY;
1828         peer->oob_pw_id = 0;
1829         wpabuf_free(peer->go_neg_conf);
1830         peer->go_neg_conf = NULL;
1831
1832         p2p_set_state(p2p, P2P_PROVISIONING);
1833         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1834 }
1835
1836
1837 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1838                               const u8 *data, size_t len, int rx_freq)
1839 {
1840         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1841         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1842
1843         if (len < 1)
1844                 return;
1845
1846         switch (data[0]) {
1847         case P2P_GO_NEG_REQ:
1848                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1849                 break;
1850         case P2P_GO_NEG_RESP:
1851                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1852                 break;
1853         case P2P_GO_NEG_CONF:
1854                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1855                 break;
1856         case P2P_INVITATION_REQ:
1857                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1858                                            rx_freq);
1859                 break;
1860         case P2P_INVITATION_RESP:
1861                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1862                 break;
1863         case P2P_PROV_DISC_REQ:
1864                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1865                 break;
1866         case P2P_PROV_DISC_RESP:
1867                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1868                 break;
1869         case P2P_DEV_DISC_REQ:
1870                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1871                 break;
1872         case P2P_DEV_DISC_RESP:
1873                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1874                 break;
1875         default:
1876                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1877                         data[0]);
1878                 break;
1879         }
1880 }
1881
1882
1883 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1884                                  const u8 *sa, const u8 *bssid, const u8 *data,
1885                                  size_t len, int freq)
1886 {
1887         if (len < 1)
1888                 return;
1889
1890         switch (data[0]) {
1891         case WLAN_PA_VENDOR_SPECIFIC:
1892                 data++;
1893                 len--;
1894                 if (len < 4)
1895                         return;
1896                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1897                         return;
1898
1899                 data += 4;
1900                 len -= 4;
1901
1902                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1903                 break;
1904         case WLAN_PA_GAS_INITIAL_REQ:
1905                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1906                 break;
1907         case WLAN_PA_GAS_INITIAL_RESP:
1908                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1909                 break;
1910         case WLAN_PA_GAS_COMEBACK_REQ:
1911                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1912                 break;
1913         case WLAN_PA_GAS_COMEBACK_RESP:
1914                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1915                 break;
1916         }
1917 }
1918
1919
1920 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1921                    const u8 *bssid, u8 category,
1922                    const u8 *data, size_t len, int freq)
1923 {
1924         if (category == WLAN_ACTION_PUBLIC) {
1925                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1926                 return;
1927         }
1928
1929         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1930                 return;
1931
1932         if (len < 4)
1933                 return;
1934
1935         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1936                 return;
1937         data += 4;
1938         len -= 4;
1939
1940         /* P2P action frame */
1941         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1942         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1943
1944         if (len < 1)
1945                 return;
1946         switch (data[0]) {
1947         case P2P_NOA:
1948                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1949                 /* TODO */
1950                 break;
1951         case P2P_PRESENCE_REQ:
1952                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1953                 break;
1954         case P2P_PRESENCE_RESP:
1955                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1956                 break;
1957         case P2P_GO_DISC_REQ:
1958                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1959                 break;
1960         default:
1961                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1962                 break;
1963         }
1964 }
1965
1966
1967 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1968 {
1969         struct p2p_data *p2p = eloop_ctx;
1970         if (p2p->go_neg_peer == NULL)
1971                 return;
1972         if (p2p->pending_listen_freq) {
1973                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1974                 p2p->pending_listen_freq = 0;
1975         }
1976         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1977         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1978         /*
1979          * Set new timeout to make sure a previously set one does not expire
1980          * too quickly while waiting for the GO Negotiation to complete.
1981          */
1982         p2p_set_timeout(p2p, 0, 500000);
1983         p2p_connect_send(p2p, p2p->go_neg_peer);
1984 }
1985
1986
1987 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1988 {
1989         struct p2p_data *p2p = eloop_ctx;
1990         if (p2p->invite_peer == NULL)
1991                 return;
1992         if (p2p->pending_listen_freq) {
1993                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1994                 p2p->pending_listen_freq = 0;
1995         }
1996         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1997         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1998                         p2p->invite_dev_pw_id);
1999 }
2000
2001
2002 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2003                                        const u8 *ie, size_t ie_len)
2004 {
2005         struct p2p_message msg;
2006         struct p2p_device *dev;
2007
2008         os_memset(&msg, 0, sizeof(msg));
2009         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2010         {
2011                 p2p_parse_free(&msg);
2012                 return; /* not a P2P probe */
2013         }
2014
2015         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2016             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2017             != 0) {
2018                 /* The Probe Request is not part of P2P Device Discovery. It is
2019                  * not known whether the source address of the frame is the P2P
2020                  * Device Address or P2P Interface Address. Do not add a new
2021                  * peer entry based on this frames.
2022                  */
2023                 p2p_parse_free(&msg);
2024                 return;
2025         }
2026
2027         dev = p2p_get_device(p2p, addr);
2028         if (dev) {
2029                 if (dev->country[0] == 0 && msg.listen_channel)
2030                         os_memcpy(dev->country, msg.listen_channel, 3);
2031                 os_get_reltime(&dev->last_seen);
2032                 p2p_parse_free(&msg);
2033                 return; /* already known */
2034         }
2035
2036         dev = p2p_create_device(p2p, addr);
2037         if (dev == NULL) {
2038                 p2p_parse_free(&msg);
2039                 return;
2040         }
2041
2042         os_get_reltime(&dev->last_seen);
2043         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2044
2045         if (msg.listen_channel) {
2046                 os_memcpy(dev->country, msg.listen_channel, 3);
2047                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2048                                                        msg.listen_channel[4]);
2049         }
2050
2051         p2p_copy_wps_info(p2p, dev, 1, &msg);
2052
2053         if (msg.wfd_subelems) {
2054                 wpabuf_free(dev->info.wfd_subelems);
2055                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2056         }
2057
2058         p2p_parse_free(&msg);
2059
2060         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2061                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2062                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2063                 dev->info.group_capab, dev->info.device_name,
2064                 dev->listen_freq);
2065 }
2066
2067
2068 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2069                                                 const u8 *addr,
2070                                                 struct p2p_message *msg)
2071 {
2072         struct p2p_device *dev;
2073
2074         dev = p2p_get_device(p2p, addr);
2075         if (dev) {
2076                 os_get_reltime(&dev->last_seen);
2077                 return dev; /* already known */
2078         }
2079
2080         dev = p2p_create_device(p2p, addr);
2081         if (dev == NULL)
2082                 return NULL;
2083
2084         p2p_add_dev_info(p2p, addr, dev, msg);
2085
2086         return dev;
2087 }
2088
2089
2090 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2091 {
2092         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2093                 return 1;
2094         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2095             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2096             WPA_GET_BE16(&req_dev_type[6]) == 0)
2097                 return 1; /* Category match with wildcard OUI/sub-category */
2098         return 0;
2099 }
2100
2101
2102 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2103                         size_t num_req_dev_type)
2104 {
2105         size_t i;
2106         for (i = 0; i < num_req_dev_type; i++) {
2107                 if (dev_type_match(dev_type, req_dev_type[i]))
2108                         return 1;
2109         }
2110         return 0;
2111 }
2112
2113
2114 /**
2115  * p2p_match_dev_type - Match local device type with requested type
2116  * @p2p: P2P module context from p2p_init()
2117  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2118  * Returns: 1 on match, 0 on mismatch
2119  *
2120  * This function can be used to match the Requested Device Type attribute in
2121  * WPS IE with the local device types for deciding whether to reply to a Probe
2122  * Request frame.
2123  */
2124 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2125 {
2126         struct wps_parse_attr attr;
2127         size_t i;
2128
2129         if (wps_parse_msg(wps, &attr))
2130                 return 1; /* assume no Requested Device Type attributes */
2131
2132         if (attr.num_req_dev_type == 0)
2133                 return 1; /* no Requested Device Type attributes -> match */
2134
2135         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2136                                 attr.num_req_dev_type))
2137                 return 1; /* Own Primary Device Type matches */
2138
2139         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2140                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2141                                         attr.req_dev_type,
2142                                         attr.num_req_dev_type))
2143                         return 1; /* Own Secondary Device Type matches */
2144         }
2145
2146         /* No matching device type found */
2147         return 0;
2148 }
2149
2150
2151 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2152 {
2153         struct wpabuf *buf;
2154         u8 *len;
2155         int pw_id = -1;
2156         size_t extra = 0;
2157
2158 #ifdef CONFIG_WIFI_DISPLAY
2159         if (p2p->wfd_ie_probe_resp)
2160                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2161 #endif /* CONFIG_WIFI_DISPLAY */
2162
2163         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2164                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2165
2166         if (p2p->query_count)
2167                 extra += MAX_SVC_ADV_IE_LEN;
2168
2169         buf = wpabuf_alloc(1000 + extra);
2170         if (buf == NULL)
2171                 return NULL;
2172
2173         if (p2p->go_neg_peer) {
2174                 /* Advertise immediate availability of WPS credential */
2175                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2176         }
2177
2178         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2179                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2180                 wpabuf_free(buf);
2181                 return NULL;
2182         }
2183
2184 #ifdef CONFIG_WIFI_DISPLAY
2185         if (p2p->wfd_ie_probe_resp)
2186                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2188
2189         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190                 wpabuf_put_buf(buf,
2191                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2192
2193         /* P2P IE */
2194         len = p2p_buf_add_ie_hdr(buf);
2195         p2p_buf_add_capability(buf, p2p->dev_capab &
2196                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2197         if (p2p->ext_listen_interval)
2198                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2199                                               p2p->ext_listen_interval);
2200         p2p_buf_add_device_info(buf, p2p, NULL);
2201         p2p_buf_update_ie_hdr(buf, len);
2202
2203         if (p2p->query_count) {
2204                 p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2205                                              p2p->query_hash,
2206                                              p2p->p2ps_adv_list);
2207         }
2208
2209         return buf;
2210 }
2211
2212
2213 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2214 {
2215         struct p2ps_advertisement *adv_data;
2216
2217         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2218
2219         /* Wildcard always matches if we have actual services */
2220         if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2221                 return p2p->p2ps_adv_list != NULL;
2222
2223         adv_data = p2p->p2ps_adv_list;
2224         while (adv_data) {
2225                 p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2226                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2227                         return 1;
2228                 adv_data = adv_data->next;
2229         }
2230
2231         return 0;
2232 }
2233
2234
2235 static enum p2p_probe_req_status
2236 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2237                 const u8 *bssid, const u8 *ie, size_t ie_len)
2238 {
2239         struct ieee802_11_elems elems;
2240         struct wpabuf *buf;
2241         struct ieee80211_mgmt *resp;
2242         struct p2p_message msg;
2243         struct wpabuf *ies;
2244
2245         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2246             ParseFailed) {
2247                 /* Ignore invalid Probe Request frames */
2248                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2249                 return P2P_PREQ_MALFORMED;
2250         }
2251
2252         if (elems.p2p == NULL) {
2253                 /* not a P2P probe - ignore it */
2254                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2255                 return P2P_PREQ_NOT_P2P;
2256         }
2257
2258         if (dst && !is_broadcast_ether_addr(dst) &&
2259             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2260                 /* Not sent to the broadcast address or our P2P Device Address
2261                  */
2262                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2263                         MAC2STR(dst));
2264                 return P2P_PREQ_NOT_PROCESSED;
2265         }
2266
2267         if (bssid && !is_broadcast_ether_addr(bssid)) {
2268                 /* Not sent to the Wildcard BSSID */
2269                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2270                         MAC2STR(bssid));
2271                 return P2P_PREQ_NOT_PROCESSED;
2272         }
2273
2274         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2275             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2276             0) {
2277                 /* not using P2P Wildcard SSID - ignore */
2278                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2279                 return P2P_PREQ_NOT_PROCESSED;
2280         }
2281
2282         if (supp_rates_11b_only(&elems)) {
2283                 /* Indicates support for 11b rates only */
2284                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2285                 return P2P_PREQ_NOT_P2P;
2286         }
2287
2288         os_memset(&msg, 0, sizeof(msg));
2289         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2290                 /* Could not parse P2P attributes */
2291                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2292                 return P2P_PREQ_NOT_P2P;
2293         }
2294
2295         p2p->p2ps_svc_found = 0;
2296
2297         if (msg.service_hash && msg.service_hash_count) {
2298                 const u8 *hash = msg.service_hash;
2299                 u8 *dest = p2p->query_hash;
2300                 u8 i;
2301
2302                 p2p->query_count = 0;
2303                 for (i = 0; i < msg.service_hash_count; i++) {
2304                         if (p2p_service_find_asp(p2p, hash)) {
2305                                 p2p->p2ps_svc_found = 1;
2306
2307                                 if (!os_memcmp(hash, p2p->wild_card_hash,
2308                                                P2PS_HASH_LEN)) {
2309                                         /* We found match(es) but wildcard
2310                                          * will return all */
2311                                         p2p->query_count = 1;
2312                                         os_memcpy(p2p->query_hash, hash,
2313                                                   P2PS_HASH_LEN);
2314                                         break;
2315                                 }
2316
2317                                 /* Save each matching hash */
2318                                 if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2319                                         os_memcpy(dest, hash, P2PS_HASH_LEN);
2320                                         dest += P2PS_HASH_LEN;
2321                                         p2p->query_count++;
2322                                 } else {
2323                                         /* We found match(es) but too many to
2324                                          * return all */
2325                                         p2p->query_count = 0;
2326                                         break;
2327                                 }
2328                         }
2329                         hash += P2PS_HASH_LEN;
2330                 }
2331
2332                 p2p_dbg(p2p, "ASP adv found: %d", p2p->p2ps_svc_found);
2333
2334                 /* Probed hash unknown */
2335                 if (!p2p->p2ps_svc_found) {
2336                         p2p_parse_free(&msg);
2337                         return P2P_PREQ_NOT_PROCESSED;
2338                 }
2339         } else {
2340                 /* This is not a P2PS Probe Request */
2341                 p2p->query_count = 0;
2342                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2343
2344                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2345                         /* not in Listen state - ignore Probe Request */
2346                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2347                                 p2p->in_listen, p2p->drv_in_listen);
2348                         p2p_parse_free(&msg);
2349                         return P2P_PREQ_NOT_LISTEN;
2350                 }
2351         }
2352
2353         if (msg.device_id &&
2354             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2355                 /* Device ID did not match */
2356                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2357                         MAC2STR(msg.device_id));
2358                 p2p_parse_free(&msg);
2359                 return P2P_PREQ_NOT_PROCESSED;
2360         }
2361
2362         /* Check Requested Device Type match */
2363         if (msg.wps_attributes &&
2364             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2365                 /* No match with Requested Device Type */
2366                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2367                 p2p_parse_free(&msg);
2368                 return P2P_PREQ_NOT_PROCESSED;
2369         }
2370         p2p_parse_free(&msg);
2371
2372         if (!p2p->cfg->send_probe_resp) {
2373                 /* Response generated elsewhere */
2374                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2375                 return P2P_PREQ_NOT_PROCESSED;
2376         }
2377
2378         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2379
2380         /*
2381          * We do not really have a specific BSS that this frame is advertising,
2382          * so build a frame that has some information in valid format. This is
2383          * really only used for discovery purposes, not to learn exact BSS
2384          * parameters.
2385          */
2386         ies = p2p_build_probe_resp_ies(p2p);
2387         if (ies == NULL)
2388                 return P2P_PREQ_NOT_PROCESSED;
2389
2390         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2391         if (buf == NULL) {
2392                 wpabuf_free(ies);
2393                 return P2P_PREQ_NOT_PROCESSED;
2394         }
2395
2396         resp = NULL;
2397         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2398
2399         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2400                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2401         os_memcpy(resp->da, addr, ETH_ALEN);
2402         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2403         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2404         resp->u.probe_resp.beacon_int = host_to_le16(100);
2405         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2406         resp->u.probe_resp.capab_info =
2407                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2408                              WLAN_CAPABILITY_PRIVACY |
2409                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2410
2411         wpabuf_put_u8(buf, WLAN_EID_SSID);
2412         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2413         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2414
2415         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2416         wpabuf_put_u8(buf, 8);
2417         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2418         wpabuf_put_u8(buf, 90 / 5);
2419         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2420         wpabuf_put_u8(buf, 180 / 5);
2421         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2422         wpabuf_put_u8(buf, 360 / 5);
2423         wpabuf_put_u8(buf, 480 / 5);
2424         wpabuf_put_u8(buf, 540 / 5);
2425
2426         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2427         wpabuf_put_u8(buf, 1);
2428         wpabuf_put_u8(buf, p2p->cfg->channel);
2429
2430         wpabuf_put_buf(buf, ies);
2431         wpabuf_free(ies);
2432
2433         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2434
2435         wpabuf_free(buf);
2436
2437         return P2P_PREQ_NOT_PROCESSED;
2438 }
2439
2440
2441 enum p2p_probe_req_status
2442 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2443                  const u8 *bssid, const u8 *ie, size_t ie_len)
2444 {
2445         enum p2p_probe_req_status res;
2446
2447         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2448
2449         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2450         p2p->query_count = 0;
2451
2452         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2453             p2p->go_neg_peer &&
2454             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2455             == 0 &&
2456             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2457                 /* Received a Probe Request from GO Negotiation peer */
2458                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2459                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2460                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2461                 return P2P_PREQ_PROCESSED;
2462         }
2463
2464         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2465             p2p->invite_peer &&
2466             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2467             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2468             == 0) {
2469                 /* Received a Probe Request from Invite peer */
2470                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2471                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2472                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2473                 return P2P_PREQ_PROCESSED;
2474         }
2475
2476         return res;
2477 }
2478
2479
2480 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2481                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2482 {
2483         struct wpabuf *tmp;
2484         u8 *lpos;
2485         size_t tmplen;
2486         int res;
2487         u8 group_capab;
2488
2489         if (p2p_ie == NULL)
2490                 return 0; /* WLAN AP is not a P2P manager */
2491
2492         /*
2493          * (Re)Association Request - P2P IE
2494          * P2P Capability attribute (shall be present)
2495          * P2P Interface attribute (present if concurrent device and
2496          *      P2P Management is enabled)
2497          */
2498         tmp = wpabuf_alloc(200);
2499         if (tmp == NULL)
2500                 return -1;
2501
2502         lpos = p2p_buf_add_ie_hdr(tmp);
2503         group_capab = 0;
2504         if (p2p->num_groups > 0) {
2505                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2506                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2507                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2508                     p2p->cross_connect)
2509                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2510         }
2511         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2512         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2513             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2514                 p2p_buf_add_p2p_interface(tmp, p2p);
2515         p2p_buf_update_ie_hdr(tmp, lpos);
2516
2517         tmplen = wpabuf_len(tmp);
2518         if (tmplen > len)
2519                 res = -1;
2520         else {
2521                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2522                 res = tmplen;
2523         }
2524         wpabuf_free(tmp);
2525
2526         return res;
2527 }
2528
2529
2530 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2531                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2532 {
2533         struct wpabuf *tmp;
2534         u8 *lpos;
2535         struct p2p_device *peer;
2536         size_t tmplen;
2537         int res;
2538         size_t extra = 0;
2539
2540         if (!p2p_group)
2541                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2542
2543 #ifdef CONFIG_WIFI_DISPLAY
2544         if (p2p->wfd_ie_assoc_req)
2545                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2546 #endif /* CONFIG_WIFI_DISPLAY */
2547
2548         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2549                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2550
2551         /*
2552          * (Re)Association Request - P2P IE
2553          * P2P Capability attribute (shall be present)
2554          * Extended Listen Timing (may be present)
2555          * P2P Device Info attribute (shall be present)
2556          */
2557         tmp = wpabuf_alloc(200 + extra);
2558         if (tmp == NULL)
2559                 return -1;
2560
2561 #ifdef CONFIG_WIFI_DISPLAY
2562         if (p2p->wfd_ie_assoc_req)
2563                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2564 #endif /* CONFIG_WIFI_DISPLAY */
2565
2566         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2567                 wpabuf_put_buf(tmp,
2568                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2569
2570         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2571
2572         lpos = p2p_buf_add_ie_hdr(tmp);
2573         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2574         if (p2p->ext_listen_interval)
2575                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2576                                               p2p->ext_listen_interval);
2577         p2p_buf_add_device_info(tmp, p2p, peer);
2578         p2p_buf_update_ie_hdr(tmp, lpos);
2579
2580         tmplen = wpabuf_len(tmp);
2581         if (tmplen > len)
2582                 res = -1;
2583         else {
2584                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2585                 res = tmplen;
2586         }
2587         wpabuf_free(tmp);
2588
2589         return res;
2590 }
2591
2592
2593 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2594 {
2595         struct wpabuf *p2p_ie;
2596         int ret;
2597
2598         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2599         if (p2p_ie == NULL)
2600                 return 0;
2601
2602         ret = p2p_attr_text(p2p_ie, buf, end);
2603         wpabuf_free(p2p_ie);
2604         return ret;
2605 }
2606
2607
2608 struct p2ps_advertisement *
2609 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2610 {
2611         struct p2ps_advertisement *adv_data;
2612
2613         if (!p2p)
2614                 return NULL;
2615
2616         adv_data = p2p->p2ps_adv_list;
2617         while (adv_data) {
2618                 if (adv_data->id == adv_id)
2619                         return adv_data;
2620                 adv_data = adv_data->next;
2621         }
2622
2623         return NULL;
2624 }
2625
2626
2627 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2628 {
2629         struct p2ps_advertisement *adv_data;
2630         struct p2ps_advertisement **prior;
2631
2632         if (!p2p)
2633                 return -1;
2634
2635         adv_data = p2p->p2ps_adv_list;
2636         prior = &p2p->p2ps_adv_list;
2637         while (adv_data) {
2638                 if (adv_data->id == adv_id) {
2639                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2640                         *prior = adv_data->next;
2641                         os_free(adv_data);
2642                         return 0;
2643                 }
2644                 prior = &adv_data->next;
2645                 adv_data = adv_data->next;
2646         }
2647
2648         return -1;
2649 }
2650
2651
2652 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2653                         const char *adv_str, u8 svc_state, u16 config_methods,
2654                         const char *svc_info)
2655 {
2656         struct p2ps_advertisement *adv_data, *tmp, **prev;
2657         u8 buf[P2PS_HASH_LEN];
2658         size_t adv_data_len, adv_len, info_len = 0;
2659
2660         if (!p2p || !adv_str || !adv_str[0])
2661                 return -1;
2662
2663         if (!(config_methods & p2p->cfg->config_methods)) {
2664                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2665                         config_methods, p2p->cfg->config_methods);
2666                 return -1;
2667         }
2668
2669         if (!p2ps_gen_hash(p2p, adv_str, buf))
2670                 return -1;
2671
2672         if (svc_info)
2673                 info_len = os_strlen(svc_info);
2674         adv_len = os_strlen(adv_str);
2675         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2676                 info_len + 1;
2677
2678         adv_data = os_zalloc(adv_data_len);
2679         if (!adv_data)
2680                 return -1;
2681
2682         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2683         adv_data->id = adv_id;
2684         adv_data->state = svc_state;
2685         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2686         adv_data->auto_accept = (u8) auto_accept;
2687         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2688
2689         if (svc_info && info_len) {
2690                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2691                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2692         }
2693
2694         /*
2695          * Group Advertisements by service string. They do not need to be
2696          * sorted, but groups allow easier Probe Response instance grouping
2697          */
2698         tmp = p2p->p2ps_adv_list;
2699         prev = &p2p->p2ps_adv_list;
2700         while (tmp) {
2701                 if (tmp->id == adv_data->id) {
2702                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2703                                 os_free(adv_data);
2704                                 return -1;
2705                         }
2706                         adv_data->next = tmp->next;
2707                         *prev = adv_data;
2708                         os_free(tmp);
2709                         goto inserted;
2710                 } else {
2711                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2712                                 adv_data->next = tmp->next;
2713                                 tmp->next = adv_data;
2714                                 goto inserted;
2715                         }
2716                 }
2717                 prev = &tmp->next;
2718                 tmp = tmp->next;
2719         }
2720
2721         /* No svc_name match found */
2722         adv_data->next = p2p->p2ps_adv_list;
2723         p2p->p2ps_adv_list = adv_data;
2724
2725 inserted:
2726         p2p_dbg(p2p,
2727                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2728                 adv_id, adv_data->config_methods, svc_state, adv_str);
2729
2730         return 0;
2731 }
2732
2733
2734 void p2p_service_flush_asp(struct p2p_data *p2p)
2735 {
2736         struct p2ps_advertisement *adv, *prev;
2737
2738         if (!p2p)
2739                 return;
2740
2741         adv = p2p->p2ps_adv_list;
2742         while (adv) {
2743                 prev = adv;
2744                 adv = adv->next;
2745                 os_free(prev);
2746         }
2747
2748         p2p->p2ps_adv_list = NULL;
2749         p2p_dbg(p2p, "All ASP advertisements flushed");
2750 }
2751
2752
2753 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2754 {
2755         struct p2p_message msg;
2756
2757         os_memset(&msg, 0, sizeof(msg));
2758         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2759                 return -1;
2760
2761         if (msg.p2p_device_addr) {
2762                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2763                 return 0;
2764         } else if (msg.device_id) {
2765                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2766                 return 0;
2767         }
2768         return -1;
2769 }
2770
2771
2772 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2773 {
2774         struct wpabuf *p2p_ie;
2775         int ret;
2776
2777         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2778                                              P2P_IE_VENDOR_TYPE);
2779         if (p2p_ie == NULL)
2780                 return -1;
2781         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2782         wpabuf_free(p2p_ie);
2783         return ret;
2784 }
2785
2786
2787 static void p2p_clear_go_neg(struct p2p_data *p2p)
2788 {
2789         p2p->go_neg_peer = NULL;
2790         p2p_clear_timeout(p2p);
2791         p2p_set_state(p2p, P2P_IDLE);
2792 }
2793
2794
2795 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2796 {
2797         if (p2p->go_neg_peer == NULL) {
2798                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2799                 return; /* No pending Group Formation */
2800         }
2801
2802         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2803             0) {
2804                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2805                         MACSTR " (GO Negotiation peer " MACSTR ")",
2806                         MAC2STR(mac_addr),
2807                         MAC2STR(p2p->go_neg_peer->intended_addr));
2808                 return; /* Ignore unexpected peer address */
2809         }
2810
2811         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2812                 MAC2STR(mac_addr));
2813
2814         p2p_clear_go_neg(p2p);
2815 }
2816
2817
2818 void p2p_group_formation_failed(struct p2p_data *p2p)
2819 {
2820         if (p2p->go_neg_peer == NULL) {
2821                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2822                 return; /* No pending Group Formation */
2823         }
2824
2825         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2826                 MAC2STR(p2p->go_neg_peer->intended_addr));
2827
2828         p2p_clear_go_neg(p2p);
2829 }
2830
2831
2832 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2833 {
2834         struct p2p_data *p2p;
2835
2836         if (cfg->max_peers < 1 ||
2837             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2838                 return NULL;
2839
2840         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2841         if (p2p == NULL)
2842                 return NULL;
2843         p2p->cfg = (struct p2p_config *) (p2p + 1);
2844         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2845         if (cfg->dev_name)
2846                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2847         if (cfg->manufacturer)
2848                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2849         if (cfg->model_name)
2850                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2851         if (cfg->model_number)
2852                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2853         if (cfg->serial_number)
2854                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2855         if (cfg->pref_chan) {
2856                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2857                                                 sizeof(struct p2p_channel));
2858                 if (p2p->cfg->pref_chan) {
2859                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2860                                   cfg->num_pref_chan *
2861                                   sizeof(struct p2p_channel));
2862                 } else
2863                         p2p->cfg->num_pref_chan = 0;
2864         }
2865
2866         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2867
2868         p2p->min_disc_int = 1;
2869         p2p->max_disc_int = 3;
2870         p2p->max_disc_tu = -1;
2871
2872         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2873                 p2p->next_tie_breaker = 0;
2874         p2p->next_tie_breaker &= 0x01;
2875         if (cfg->sd_request)
2876                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2877         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2878         if (cfg->concurrent_operations)
2879                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2880         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2881
2882         dl_list_init(&p2p->devices);
2883
2884         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2885                                p2p_expiration_timeout, p2p, NULL);
2886
2887         p2p->go_timeout = 100;
2888         p2p->client_timeout = 20;
2889         p2p->num_p2p_sd_queries = 0;
2890
2891         p2p_dbg(p2p, "initialized");
2892         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2893         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2894
2895         return p2p;
2896 }
2897
2898
2899 void p2p_deinit(struct p2p_data *p2p)
2900 {
2901 #ifdef CONFIG_WIFI_DISPLAY
2902         wpabuf_free(p2p->wfd_ie_beacon);
2903         wpabuf_free(p2p->wfd_ie_probe_req);
2904         wpabuf_free(p2p->wfd_ie_probe_resp);
2905         wpabuf_free(p2p->wfd_ie_assoc_req);
2906         wpabuf_free(p2p->wfd_ie_invitation);
2907         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2908         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2909         wpabuf_free(p2p->wfd_ie_go_neg);
2910         wpabuf_free(p2p->wfd_dev_info);
2911         wpabuf_free(p2p->wfd_assoc_bssid);
2912         wpabuf_free(p2p->wfd_coupled_sink_info);
2913 #endif /* CONFIG_WIFI_DISPLAY */
2914
2915         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2916         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2917         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2918         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2919         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2920         p2p_flush(p2p);
2921         p2p_free_req_dev_types(p2p);
2922         os_free(p2p->cfg->dev_name);
2923         os_free(p2p->cfg->manufacturer);
2924         os_free(p2p->cfg->model_name);
2925         os_free(p2p->cfg->model_number);
2926         os_free(p2p->cfg->serial_number);
2927         os_free(p2p->cfg->pref_chan);
2928         os_free(p2p->groups);
2929         os_free(p2p->p2ps_prov);
2930         wpabuf_free(p2p->sd_resp);
2931         os_free(p2p->after_scan_tx);
2932         p2p_remove_wps_vendor_extensions(p2p);
2933         os_free(p2p->no_go_freq.range);
2934         p2p_service_flush_asp(p2p);
2935
2936         os_free(p2p);
2937 }
2938
2939
2940 void p2p_flush(struct p2p_data *p2p)
2941 {
2942         struct p2p_device *dev, *prev;
2943         p2p_stop_find(p2p);
2944         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2945                               list) {
2946                 dl_list_del(&dev->list);
2947                 p2p_device_free(p2p, dev);
2948         }
2949         p2p_free_sd_queries(p2p);
2950         os_free(p2p->after_scan_tx);
2951         p2p->after_scan_tx = NULL;
2952 }
2953
2954
2955 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2956 {
2957         struct p2p_device *dev;
2958
2959         dev = p2p_get_device(p2p, addr);
2960         if (dev == NULL)
2961                 return -1;
2962
2963         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2964
2965         if (p2p->go_neg_peer == dev) {
2966                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2967                 p2p->go_neg_peer = NULL;
2968         }
2969
2970         dev->wps_method = WPS_NOT_READY;
2971         dev->oob_pw_id = 0;
2972         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2973         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2974
2975         /* Check if after_scan_tx is for this peer. If so free it */
2976         if (p2p->after_scan_tx &&
2977             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2978                 os_free(p2p->after_scan_tx);
2979                 p2p->after_scan_tx = NULL;
2980         }
2981
2982         return 0;
2983 }
2984
2985
2986 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2987 {
2988         os_free(p2p->cfg->dev_name);
2989         if (dev_name) {
2990                 p2p->cfg->dev_name = os_strdup(dev_name);
2991                 if (p2p->cfg->dev_name == NULL)
2992                         return -1;
2993         } else
2994                 p2p->cfg->dev_name = NULL;
2995         return 0;
2996 }
2997
2998
2999 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3000 {
3001         os_free(p2p->cfg->manufacturer);
3002         p2p->cfg->manufacturer = NULL;
3003         if (manufacturer) {
3004                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3005                 if (p2p->cfg->manufacturer == NULL)
3006                         return -1;
3007         }
3008
3009         return 0;
3010 }
3011
3012
3013 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3014 {
3015         os_free(p2p->cfg->model_name);
3016         p2p->cfg->model_name = NULL;
3017         if (model_name) {
3018                 p2p->cfg->model_name = os_strdup(model_name);
3019                 if (p2p->cfg->model_name == NULL)
3020                         return -1;
3021         }
3022
3023         return 0;
3024 }
3025
3026
3027 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3028 {
3029         os_free(p2p->cfg->model_number);
3030         p2p->cfg->model_number = NULL;
3031         if (model_number) {
3032                 p2p->cfg->model_number = os_strdup(model_number);
3033                 if (p2p->cfg->model_number == NULL)
3034                         return -1;
3035         }
3036
3037         return 0;
3038 }
3039
3040
3041 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3042 {
3043         os_free(p2p->cfg->serial_number);
3044         p2p->cfg->serial_number = NULL;
3045         if (serial_number) {
3046                 p2p->cfg->serial_number = os_strdup(serial_number);
3047                 if (p2p->cfg->serial_number == NULL)
3048                         return -1;
3049         }
3050
3051         return 0;
3052 }
3053
3054
3055 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3056 {
3057         p2p->cfg->config_methods = config_methods;
3058 }
3059
3060
3061 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3062 {
3063         os_memcpy(p2p->cfg->uuid, uuid, 16);
3064 }
3065
3066
3067 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3068 {
3069         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3070         return 0;
3071 }
3072
3073
3074 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3075                           size_t num_dev_types)
3076 {
3077         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3078                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3079         p2p->cfg->num_sec_dev_types = num_dev_types;
3080         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3081         return 0;
3082 }
3083
3084
3085 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3086 {
3087         int i;
3088
3089         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3090                 wpabuf_free(p2p->wps_vendor_ext[i]);
3091                 p2p->wps_vendor_ext[i] = NULL;
3092         }
3093 }
3094
3095
3096 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3097                                  const struct wpabuf *vendor_ext)
3098 {
3099         int i;
3100
3101         if (vendor_ext == NULL)
3102                 return -1;
3103
3104         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3105                 if (p2p->wps_vendor_ext[i] == NULL)
3106                         break;
3107         }
3108         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3109                 return -1;
3110
3111         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3112         if (p2p->wps_vendor_ext[i] == NULL)
3113                 return -1;
3114
3115         return 0;
3116 }
3117
3118
3119 int p2p_set_country(struct p2p_data *p2p, const char *country)
3120 {
3121         os_memcpy(p2p->cfg->country, country, 3);
3122         return 0;
3123 }
3124
3125
3126 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3127 {
3128         if (dev->sd_pending_bcast_queries == 0) {
3129                 /* Initialize with total number of registered broadcast
3130                  * SD queries. */
3131                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3132         }
3133
3134         if (p2p_start_sd(p2p, dev) == 0)
3135                 return 1;
3136
3137         if (dev->req_config_methods &&
3138             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3139                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3140                         MACSTR " (config methods 0x%x)",
3141                         MAC2STR(dev->info.p2p_device_addr),
3142                         dev->req_config_methods);
3143                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3144                         return 1;
3145         }
3146
3147         return 0;
3148 }
3149
3150
3151 void p2p_continue_find(struct p2p_data *p2p)
3152 {
3153         struct p2p_device *dev;
3154         int found;
3155
3156         p2p_set_state(p2p, P2P_SEARCH);
3157
3158         /* Continue from the device following the last iteration */
3159         found = 0;
3160         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3161                 if (dev == p2p->last_p2p_find_oper) {
3162                         found = 1;
3163                         continue;
3164                 }
3165                 if (!found)
3166                         continue;
3167                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3168                         p2p->last_p2p_find_oper = dev;
3169                         return;
3170                 }
3171         }
3172
3173         /*
3174          * Wrap around to the beginning of the list and continue until the last
3175          * iteration device.
3176          */
3177         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3178                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3179                         p2p->last_p2p_find_oper = dev;
3180                         return;
3181                 }
3182                 if (dev == p2p->last_p2p_find_oper)
3183                         break;
3184         }
3185
3186         p2p_listen_in_find(p2p, 1);
3187 }
3188
3189
3190 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3191 {
3192         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3193                 success);
3194         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3195
3196         if (!success) {
3197                 if (p2p->sd_peer)
3198                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3199                 p2p->sd_peer = NULL;
3200                 if (p2p->state != P2P_IDLE)
3201                         p2p_continue_find(p2p);
3202                 return;
3203         }
3204
3205         if (p2p->sd_peer == NULL) {
3206                 p2p_dbg(p2p, "No SD peer entry known");
3207                 if (p2p->state != P2P_IDLE)
3208                         p2p_continue_find(p2p);
3209                 return;
3210         }
3211
3212         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3213                 /* Update the pending broadcast SD query count for this device
3214                  */
3215                 p2p->sd_peer->sd_pending_bcast_queries--;
3216
3217                 /*
3218                  * If there are no pending broadcast queries for this device,
3219                  * mark it as done (-1).
3220                  */
3221                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3222                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3223         }
3224
3225         /* Wait for response from the peer */
3226         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3227         p2p_set_timeout(p2p, 0, 200000);
3228 }
3229
3230
3231 /**
3232  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3233  * @p2p: P2P module context from p2p_init()
3234  */
3235 static void p2p_retry_pd(struct p2p_data *p2p)
3236 {
3237         struct p2p_device *dev;
3238
3239         /*
3240          * Retry the prov disc req attempt only for the peer that the user had
3241          * requested.
3242          */
3243
3244         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3245                 if (os_memcmp(p2p->pending_pd_devaddr,
3246                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3247                         continue;
3248                 if (!dev->req_config_methods)
3249                         continue;
3250
3251                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3252                         MACSTR " (config methods 0x%x)",
3253                         MAC2STR(dev->info.p2p_device_addr),
3254                         dev->req_config_methods);
3255                 p2p_send_prov_disc_req(p2p, dev,
3256                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3257                                        p2p->pd_force_freq);
3258                 return;
3259         }
3260 }
3261
3262
3263 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3264 {
3265         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3266                 success);
3267
3268         /*
3269          * Postpone resetting the pending action state till after we actually
3270          * time out. This allows us to take some action like notifying any
3271          * interested parties about no response to the request.
3272          *
3273          * When the timer (below) goes off we check in IDLE, SEARCH, or
3274          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3275          * requests in, if this was still pending and then raise notification.
3276          */
3277
3278         if (!success) {
3279                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3280
3281                 if (p2p->user_initiated_pd &&
3282                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3283                 {
3284                         /* Retry request from timeout to avoid busy loops */
3285                         p2p->pending_action_state = P2P_PENDING_PD;
3286                         p2p_set_timeout(p2p, 0, 50000);
3287                 } else if (p2p->state != P2P_IDLE)
3288                         p2p_continue_find(p2p);
3289                 else if (p2p->user_initiated_pd) {
3290                         p2p->pending_action_state = P2P_PENDING_PD;
3291                         p2p_set_timeout(p2p, 0, 300000);
3292                 }
3293                 return;
3294         }
3295
3296         /*
3297          * This postponing, of resetting pending_action_state, needs to be
3298          * done only for user initiated PD requests and not internal ones.
3299          */
3300         if (p2p->user_initiated_pd)
3301                 p2p->pending_action_state = P2P_PENDING_PD;
3302         else
3303                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3304
3305         /* Wait for response from the peer */
3306         if (p2p->state == P2P_SEARCH)
3307                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3308         p2p_set_timeout(p2p, 0, 200000);
3309 }
3310
3311
3312 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3313 {
3314         if (p2p->after_scan_tx_in_progress) {
3315                 p2p->after_scan_tx_in_progress = 0;
3316                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3317                     p2p_run_after_scan(p2p))
3318                         return 1;
3319                 if (p2p->state == P2P_SEARCH) {
3320                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3321                         p2p_continue_find(p2p);
3322                 }
3323         }
3324
3325         return 0;
3326 }
3327
3328
3329 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3330 {
3331         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3332                 success);
3333
3334         if (p2p->send_action_in_progress) {
3335                 p2p->send_action_in_progress = 0;
3336                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3337         }
3338
3339         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3340
3341         if (!success)
3342                 goto continue_search;
3343
3344         if (!p2p->cfg->prov_disc_resp_cb ||
3345             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3346                 goto continue_search;
3347
3348         p2p_dbg(p2p,
3349                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3350         return;
3351
3352 continue_search:
3353         p2p_check_after_scan_tx_continuation(p2p);
3354 }
3355
3356
3357 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3358                          struct os_reltime *rx_time, int level, const u8 *ies,
3359                          size_t ies_len)
3360 {
3361         if (os_reltime_before(rx_time, &p2p->find_start)) {
3362                 /*
3363                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3364                  * scan results for relatively long time. To avoid reporting
3365                  * stale information, update P2P peers only based on results
3366                  * that have based on frames received after the last p2p_find
3367                  * operation was started.
3368                  */
3369                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3370                         " (rx_time=%u.%06u)",
3371                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3372                         (unsigned int) rx_time->usec);
3373                 return 0;
3374         }
3375
3376         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3377
3378         return 0;
3379 }
3380
3381
3382 void p2p_scan_res_handled(struct p2p_data *p2p)
3383 {
3384         if (!p2p->p2p_scan_running) {
3385                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3386         }
3387         p2p->p2p_scan_running = 0;
3388         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3389
3390         if (p2p_run_after_scan(p2p))
3391                 return;
3392         if (p2p->state == P2P_SEARCH)
3393                 p2p_continue_find(p2p);
3394 }
3395
3396
3397 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3398 {
3399         u8 dev_capab;
3400         u8 *len;
3401
3402 #ifdef CONFIG_WIFI_DISPLAY
3403         if (p2p->wfd_ie_probe_req)
3404                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3405 #endif /* CONFIG_WIFI_DISPLAY */
3406
3407         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3408                 wpabuf_put_buf(ies,
3409                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3410
3411         len = p2p_buf_add_ie_hdr(ies);
3412
3413         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3414
3415         /* P2PS requires Probe Request frames to include SD bit */
3416         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3417                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3418
3419         p2p_buf_add_capability(ies, dev_capab, 0);
3420
3421         if (dev_id)
3422                 p2p_buf_add_device_id(ies, dev_id);
3423         if (p2p->cfg->reg_class && p2p->cfg->channel)
3424                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3425                                            p2p->cfg->reg_class,
3426                                            p2p->cfg->channel);
3427         if (p2p->ext_listen_interval)
3428                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3429                                               p2p->ext_listen_interval);
3430
3431         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3432                 p2p_buf_add_service_hash(ies, p2p);
3433
3434         /* TODO: p2p_buf_add_operating_channel() if GO */
3435         p2p_buf_update_ie_hdr(ies, len);
3436 }
3437
3438
3439 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3440 {
3441         size_t len = 100;
3442
3443 #ifdef CONFIG_WIFI_DISPLAY
3444         if (p2p && p2p->wfd_ie_probe_req)
3445                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3446 #endif /* CONFIG_WIFI_DISPLAY */
3447
3448         if (p2p && p2p->vendor_elem &&
3449             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3450                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3451
3452         return len;
3453 }
3454
3455
3456 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3457 {
3458         return p2p_attr_text(p2p_ie, buf, end);
3459 }
3460
3461
3462 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3463 {
3464         struct p2p_device *dev = p2p->go_neg_peer;
3465         int timeout;
3466
3467         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3468
3469         if (dev == NULL) {
3470                 p2p_dbg(p2p, "No pending GO Negotiation");
3471                 return;
3472         }
3473
3474         if (success) {
3475                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3476                         p2p_set_state(p2p, P2P_IDLE);
3477                         return;
3478                 }
3479         } else if (dev->go_neg_req_sent) {
3480                 /* Cancel the increment from p2p_connect_send() on failure */
3481                 dev->go_neg_req_sent--;
3482         }
3483
3484         if (!success &&
3485             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3486             !is_zero_ether_addr(dev->member_in_go_dev)) {
3487                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3488                         MAC2STR(dev->info.p2p_device_addr));
3489                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3490                 p2p_send_dev_disc_req(p2p, dev);
3491                 return;
3492         }
3493
3494         /*
3495          * Use P2P find, if needed, to find the other device from its listen
3496          * channel.
3497          */
3498         p2p_set_state(p2p, P2P_CONNECT);
3499         timeout = success ? 500000 : 100000;
3500         if (!success && p2p->go_neg_peer &&
3501             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3502                 unsigned int r;
3503                 /*
3504                  * Peer is expected to wait our response and we will skip the
3505                  * listen phase. Add some randomness to the wait time here to
3506                  * make it less likely to hit cases where we could end up in
3507                  * sync with peer not listening.
3508                  */
3509                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3510                         r = 0;
3511                 timeout += r % 100000;
3512         }
3513         p2p_set_timeout(p2p, 0, timeout);
3514 }
3515
3516
3517 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3518 {
3519         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3520                 success);
3521         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3522                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3523                 return;
3524         }
3525         p2p_set_state(p2p, P2P_CONNECT);
3526         p2p_set_timeout(p2p, 0, 500000);
3527 }
3528
3529
3530 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3531                                        const u8 *addr)
3532 {
3533         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3534         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3535                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3536                 return;
3537         }
3538
3539         if (success) {
3540                 struct p2p_device *dev;
3541                 dev = p2p_get_device(p2p, addr);
3542                 if (dev &&
3543                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3544                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3545         }
3546
3547         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3548                 p2p_continue_find(p2p);
3549 }
3550
3551
3552 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3553                                enum p2p_send_action_result result)
3554 {
3555         struct p2p_device *dev;
3556
3557         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3558         if (result == P2P_SEND_ACTION_FAILED) {
3559                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3560                 p2p_go_neg_failed(p2p, -1);
3561                 return;
3562         }
3563
3564         dev = p2p->go_neg_peer;
3565
3566         if (result == P2P_SEND_ACTION_NO_ACK) {
3567                 /*
3568                  * Retry GO Negotiation Confirmation
3569                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3570                  * ACK for confirmation.
3571                  */
3572                 if (dev && dev->go_neg_conf &&
3573                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3574                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3575                                 dev->go_neg_conf_sent);
3576                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3577                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3578                                             dev->info.p2p_device_addr,
3579                                             p2p->cfg->dev_addr,
3580                                             dev->info.p2p_device_addr,
3581                                             wpabuf_head(dev->go_neg_conf),
3582                                             wpabuf_len(dev->go_neg_conf), 0) >=
3583                             0) {
3584                                 dev->go_neg_conf_sent++;
3585                                 return;
3586                         }
3587                         p2p_dbg(p2p, "Failed to re-send Action frame");
3588
3589                         /*
3590                          * Continue with the assumption that the first attempt
3591                          * went through and just the ACK frame was lost.
3592                          */
3593                 }
3594
3595                 /*
3596                  * It looks like the TX status for GO Negotiation Confirm is
3597                  * often showing failure even when the peer has actually
3598                  * received the frame. Since the peer may change channels
3599                  * immediately after having received the frame, we may not see
3600                  * an Ack for retries, so just dropping a single frame may
3601                  * trigger this. To allow the group formation to succeed if the
3602                  * peer did indeed receive the frame, continue regardless of
3603                  * the TX status.
3604                  */
3605                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3606         }
3607
3608         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3609
3610         if (dev == NULL)
3611                 return;
3612
3613         p2p_go_complete(p2p, dev);
3614 }
3615
3616
3617 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3618                         const u8 *src, const u8 *bssid,
3619                         enum p2p_send_action_result result)
3620 {
3621         enum p2p_pending_action_state state;
3622         int success;
3623
3624         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3625                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3626                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3627                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3628         success = result == P2P_SEND_ACTION_SUCCESS;
3629         state = p2p->pending_action_state;
3630         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3631         switch (state) {
3632         case P2P_NO_PENDING_ACTION:
3633                 if (p2p->send_action_in_progress) {
3634                         p2p->send_action_in_progress = 0;
3635                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3636                 }
3637                 p2p_check_after_scan_tx_continuation(p2p);
3638                 break;
3639         case P2P_PENDING_GO_NEG_REQUEST:
3640                 p2p_go_neg_req_cb(p2p, success);
3641                 break;
3642         case P2P_PENDING_GO_NEG_RESPONSE:
3643                 p2p_go_neg_resp_cb(p2p, success);
3644                 break;
3645         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3646                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3647                 break;
3648         case P2P_PENDING_GO_NEG_CONFIRM:
3649                 p2p_go_neg_conf_cb(p2p, result);
3650                 break;
3651         case P2P_PENDING_SD:
3652                 p2p_sd_cb(p2p, success);
3653                 break;
3654         case P2P_PENDING_PD:
3655                 p2p_prov_disc_cb(p2p, success);
3656                 break;
3657         case P2P_PENDING_PD_RESPONSE:
3658                 p2p_prov_disc_resp_cb(p2p, success);
3659                 break;
3660         case P2P_PENDING_INVITATION_REQUEST:
3661                 p2p_invitation_req_cb(p2p, success);
3662                 break;
3663         case P2P_PENDING_INVITATION_RESPONSE:
3664                 p2p_invitation_resp_cb(p2p, success);
3665                 break;
3666         case P2P_PENDING_DEV_DISC_REQUEST:
3667                 p2p_dev_disc_req_cb(p2p, success);
3668                 break;
3669         case P2P_PENDING_DEV_DISC_RESPONSE:
3670                 p2p_dev_disc_resp_cb(p2p, success);
3671                 break;
3672         case P2P_PENDING_GO_DISC_REQ:
3673                 p2p_go_disc_req_cb(p2p, success);
3674                 break;
3675         }
3676
3677         p2p->after_scan_tx_in_progress = 0;
3678 }
3679
3680
3681 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3682                    unsigned int duration)
3683 {
3684         if (freq == p2p->pending_client_disc_freq) {
3685                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3686                 p2p->pending_client_disc_freq = 0;
3687                 return;
3688         }
3689
3690         if (freq != p2p->pending_listen_freq) {
3691                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3692                         freq, duration, p2p->pending_listen_freq);
3693                 return;
3694         }
3695
3696         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3697                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3698                 p2p->pending_listen_freq);
3699         p2p->in_listen = 1;
3700         p2p->drv_in_listen = freq;
3701         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3702                 /*
3703                  * Add 20 msec extra wait to avoid race condition with driver
3704                  * remain-on-channel end event, i.e., give driver more time to
3705                  * complete the operation before our timeout expires.
3706                  */
3707                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3708                                 p2p->pending_listen_usec + 20000);
3709         }
3710
3711         p2p->pending_listen_freq = 0;
3712 }
3713
3714
3715 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3716 {
3717         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3718         p2p->drv_in_listen = 0;
3719         if (p2p->in_listen)
3720                 return 0; /* Internal timeout will trigger the next step */
3721
3722         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3723                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3724                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3725                         p2p_go_neg_failed(p2p, -1);
3726                         return 0;
3727                 }
3728
3729                 p2p_set_state(p2p, P2P_CONNECT);
3730                 p2p_connect_send(p2p, p2p->go_neg_peer);
3731                 return 1;
3732         } else if (p2p->state == P2P_SEARCH) {
3733                 if (p2p->p2p_scan_running) {
3734                          /*
3735                           * Search is already in progress. This can happen if
3736                           * an Action frame RX is reported immediately after
3737                           * the end of a remain-on-channel operation and the
3738                           * response frame to that is sent using an offchannel
3739                           * operation while in p2p_find. Avoid an attempt to
3740                           * restart a scan here.
3741                           */
3742                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3743                         return 1;
3744                 }
3745                 if (p2p->pending_listen_freq) {
3746                         /*
3747                          * Better wait a bit if the driver is unable to start
3748                          * offchannel operation for some reason. p2p_search()
3749                          * will be started from internal timeout.
3750                          */
3751                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3752                         p2p_set_timeout(p2p, 0, 100000);
3753                         return 1;
3754                 }
3755                 if (p2p->search_delay) {
3756                         p2p_dbg(p2p, "Delay search operation by %u ms",
3757                                 p2p->search_delay);
3758                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3759                                         (p2p->search_delay % 1000) * 1000);
3760                         return 1;
3761                 }
3762                 p2p_search(p2p);
3763                 return 1;
3764         }
3765
3766         return 0;
3767 }
3768
3769
3770 static void p2p_timeout_connect(struct p2p_data *p2p)
3771 {
3772         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3773         if (p2p->go_neg_peer &&
3774             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3775                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3776                 p2p_go_neg_failed(p2p, -1);
3777                 return;
3778         }
3779         if (p2p->go_neg_peer &&
3780             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3781             p2p->go_neg_peer->connect_reqs < 120) {
3782                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3783                 p2p_connect_send(p2p, p2p->go_neg_peer);
3784                 return;
3785         }
3786         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3787                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3788                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3789                 p2p_set_timeout(p2p, 0, 30000);
3790                 return;
3791         }
3792         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3793         p2p_listen_in_find(p2p, 0);
3794 }
3795
3796
3797 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3798 {
3799         if (p2p->go_neg_peer) {
3800                 if (p2p->drv_in_listen) {
3801                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3802                         return;
3803                 }
3804
3805                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3806                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3807                         p2p_go_neg_failed(p2p, -1);
3808                         return;
3809                 }
3810
3811                 p2p_set_state(p2p, P2P_CONNECT);
3812                 p2p_connect_send(p2p, p2p->go_neg_peer);
3813         } else
3814                 p2p_set_state(p2p, P2P_IDLE);
3815 }
3816
3817
3818 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3819 {
3820         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3821
3822         if (p2p->cfg->is_concurrent_session_active &&
3823             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3824                 p2p_set_timeout(p2p, 0, 500000);
3825         else
3826                 p2p_set_timeout(p2p, 0, 200000);
3827 }
3828
3829
3830 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3831 {
3832         struct p2p_device *dev = p2p->go_neg_peer;
3833
3834         if (dev == NULL) {
3835                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3836                 return;
3837         }
3838
3839         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3840         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3841         p2p_listen_in_find(p2p, 0);
3842 }
3843
3844
3845 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3846 {
3847         p2p_dbg(p2p, "Service Discovery Query timeout");
3848         if (p2p->sd_peer) {
3849                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3850                 p2p->sd_peer = NULL;
3851         }
3852         p2p_continue_find(p2p);
3853 }
3854
3855
3856 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3857 {
3858         p2p_dbg(p2p, "Provision Discovery Request timeout");
3859         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3860         p2p_continue_find(p2p);
3861 }
3862
3863
3864 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3865 {
3866         u32 adv_id = 0;
3867         u8 *adv_mac = NULL;
3868
3869         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3870
3871         /*
3872          * For user initiated PD requests that we have not gotten any responses
3873          * for while in IDLE state, we retry them a couple of times before
3874          * giving up.
3875          */
3876         if (!p2p->user_initiated_pd)
3877                 return;
3878
3879         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3880
3881         if (p2p->pd_retries) {
3882                 p2p->pd_retries--;
3883                 p2p_retry_pd(p2p);
3884         } else {
3885                 struct p2p_device *dev;
3886                 int for_join = 0;
3887
3888                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3889                         if (os_memcmp(p2p->pending_pd_devaddr,
3890                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3891                                 continue;
3892                         if (dev->req_config_methods &&
3893                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3894                                 for_join = 1;
3895                 }
3896
3897                 if (p2p->p2ps_prov) {
3898                         adv_id = p2p->p2ps_prov->adv_id;
3899                         adv_mac = p2p->p2ps_prov->adv_mac;
3900                 }
3901
3902                 if (p2p->cfg->prov_disc_fail)
3903                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3904                                                  p2p->pending_pd_devaddr,
3905                                                  for_join ?
3906                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3907                                                  P2P_PROV_DISC_TIMEOUT,
3908                                                  adv_id, adv_mac, NULL);
3909                 p2p_reset_pending_pd(p2p);
3910         }
3911 }
3912
3913
3914 static void p2p_timeout_invite(struct p2p_data *p2p)
3915 {
3916         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3917         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3918         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3919                 /*
3920                  * Better remain on operating channel instead of listen channel
3921                  * when running a group.
3922                  */
3923                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3924                 p2p_set_timeout(p2p, 0, 100000);
3925                 return;
3926         }
3927         p2p_listen_in_find(p2p, 0);
3928 }
3929
3930
3931 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3932 {
3933         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3934                 p2p_set_state(p2p, P2P_INVITE);
3935                 p2p_invite_send(p2p, p2p->invite_peer,
3936                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3937         } else {
3938                 if (p2p->invite_peer) {
3939                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3940                         if (p2p->cfg->invitation_result)
3941                                 p2p->cfg->invitation_result(
3942                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3943                                         p2p->invite_peer->info.p2p_device_addr,
3944                                         0, 0);
3945                 }
3946                 p2p_set_state(p2p, P2P_IDLE);
3947         }
3948 }
3949
3950
3951 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3952 {
3953         struct p2p_data *p2p = eloop_ctx;
3954
3955         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3956
3957         p2p->in_listen = 0;
3958         if (p2p->drv_in_listen) {
3959                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3960                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3961         }
3962
3963         switch (p2p->state) {
3964         case P2P_IDLE:
3965                 /* Check if we timed out waiting for PD req */
3966                 if (p2p->pending_action_state == P2P_PENDING_PD)
3967                         p2p_timeout_prov_disc_req(p2p);
3968                 break;
3969         case P2P_SEARCH:
3970                 /* Check if we timed out waiting for PD req */
3971                 if (p2p->pending_action_state == P2P_PENDING_PD)
3972                         p2p_timeout_prov_disc_req(p2p);
3973                 if (p2p->search_delay && !p2p->in_search_delay) {
3974                         p2p_dbg(p2p, "Delay search operation by %u ms",
3975                                 p2p->search_delay);
3976                         p2p->in_search_delay = 1;
3977                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3978                                         (p2p->search_delay % 1000) * 1000);
3979                         break;
3980                 }
3981                 p2p->in_search_delay = 0;
3982                 p2p_search(p2p);
3983                 break;
3984         case P2P_CONNECT:
3985                 p2p_timeout_connect(p2p);
3986                 break;
3987         case P2P_CONNECT_LISTEN:
3988                 p2p_timeout_connect_listen(p2p);
3989                 break;
3990         case P2P_GO_NEG:
3991                 break;
3992         case P2P_LISTEN_ONLY:
3993                 /* Check if we timed out waiting for PD req */
3994                 if (p2p->pending_action_state == P2P_PENDING_PD)
3995                         p2p_timeout_prov_disc_req(p2p);
3996
3997                 if (p2p->ext_listen_only) {
3998                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3999                         p2p->ext_listen_only = 0;
4000                         p2p_set_state(p2p, P2P_IDLE);
4001                 }
4002                 break;
4003         case P2P_WAIT_PEER_CONNECT:
4004                 p2p_timeout_wait_peer_connect(p2p);
4005                 break;
4006         case P2P_WAIT_PEER_IDLE:
4007                 p2p_timeout_wait_peer_idle(p2p);
4008                 break;
4009         case P2P_SD_DURING_FIND:
4010                 p2p_timeout_sd_during_find(p2p);
4011                 break;
4012         case P2P_PROVISIONING:
4013                 break;
4014         case P2P_PD_DURING_FIND:
4015                 p2p_timeout_prov_disc_during_find(p2p);
4016                 break;
4017         case P2P_INVITE:
4018                 p2p_timeout_invite(p2p);
4019                 break;
4020         case P2P_INVITE_LISTEN:
4021                 p2p_timeout_invite_listen(p2p);
4022                 break;
4023         }
4024 }
4025
4026
4027 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4028 {
4029         struct p2p_device *dev;
4030
4031         dev = p2p_get_device(p2p, peer_addr);
4032         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4033                 MACSTR, MAC2STR(peer_addr));
4034         if (dev == NULL) {
4035                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4036                 return -1;
4037         }
4038         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4039         dev->flags |= P2P_DEV_USER_REJECTED;
4040         return 0;
4041 }
4042
4043
4044 const char * p2p_wps_method_text(enum p2p_wps_method method)
4045 {
4046         switch (method) {
4047         case WPS_NOT_READY:
4048                 return "not-ready";
4049         case WPS_PIN_DISPLAY:
4050                 return "Display";
4051         case WPS_PIN_KEYPAD:
4052                 return "Keypad";
4053         case WPS_PBC:
4054                 return "PBC";
4055         case WPS_NFC:
4056                 return "NFC";
4057         case WPS_P2PS:
4058                 return "P2PS";
4059         }
4060
4061         return "??";
4062 }
4063
4064
4065 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4066 {
4067         switch (go_state) {
4068         case UNKNOWN_GO:
4069                 return "unknown";
4070         case LOCAL_GO:
4071                 return "local";
4072         case  REMOTE_GO:
4073                 return "remote";
4074         }
4075
4076         return "??";
4077 }
4078
4079
4080 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4081                                                const u8 *addr, int next)
4082 {
4083         struct p2p_device *dev;
4084
4085         if (addr)
4086                 dev = p2p_get_device(p2p, addr);
4087         else
4088                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4089
4090         if (dev && next) {
4091                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4092                 if (&dev->list == &p2p->devices)
4093                         dev = NULL;
4094         }
4095
4096         if (dev == NULL)
4097                 return NULL;
4098
4099         return &dev->info;
4100 }
4101
4102
4103 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4104                           char *buf, size_t buflen)
4105 {
4106         struct p2p_device *dev;
4107         int res;
4108         char *pos, *end;
4109         struct os_reltime now;
4110
4111         if (info == NULL)
4112                 return -1;
4113
4114         dev = (struct p2p_device *) (((u8 *) info) -
4115                                      offsetof(struct p2p_device, info));
4116
4117         pos = buf;
4118         end = buf + buflen;
4119
4120         os_get_reltime(&now);
4121         res = os_snprintf(pos, end - pos,
4122                           "age=%d\n"
4123                           "listen_freq=%d\n"
4124                           "wps_method=%s\n"
4125                           "interface_addr=" MACSTR "\n"
4126                           "member_in_go_dev=" MACSTR "\n"
4127                           "member_in_go_iface=" MACSTR "\n"
4128                           "go_neg_req_sent=%d\n"
4129                           "go_state=%s\n"
4130                           "dialog_token=%u\n"
4131                           "intended_addr=" MACSTR "\n"
4132                           "country=%c%c\n"
4133                           "oper_freq=%d\n"
4134                           "req_config_methods=0x%x\n"
4135                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4136                           "status=%d\n"
4137                           "invitation_reqs=%u\n",
4138                           (int) (now.sec - dev->last_seen.sec),
4139                           dev->listen_freq,
4140                           p2p_wps_method_text(dev->wps_method),
4141                           MAC2STR(dev->interface_addr),
4142                           MAC2STR(dev->member_in_go_dev),
4143                           MAC2STR(dev->member_in_go_iface),
4144                           dev->go_neg_req_sent,
4145                           p2p_go_state_text(dev->go_state),
4146                           dev->dialog_token,
4147                           MAC2STR(dev->intended_addr),
4148                           dev->country[0] ? dev->country[0] : '_',
4149                           dev->country[1] ? dev->country[1] : '_',
4150                           dev->oper_freq,
4151                           dev->req_config_methods,
4152                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4153                           "[PROBE_REQ_ONLY]" : "",
4154                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4155                           dev->flags & P2P_DEV_NOT_YET_READY ?
4156                           "[NOT_YET_READY]" : "",
4157                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4158                           "[PD_PEER_DISPLAY]" : "",
4159                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4160                           "[PD_PEER_KEYPAD]" : "",
4161                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4162                           "[PD_PEER_P2PS]" : "",
4163                           dev->flags & P2P_DEV_USER_REJECTED ?
4164                           "[USER_REJECTED]" : "",
4165                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4166                           "[PEER_WAITING_RESPONSE]" : "",
4167                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4168                           "[PREFER_PERSISTENT_GROUP]" : "",
4169                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4170                           "[WAIT_GO_NEG_RESPONSE]" : "",
4171                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4172                           "[WAIT_GO_NEG_CONFIRM]" : "",
4173                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4174                           "[GROUP_CLIENT_ONLY]" : "",
4175                           dev->flags & P2P_DEV_FORCE_FREQ ?
4176                           "[FORCE_FREQ]" : "",
4177                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4178                           "[PD_FOR_JOIN]" : "",
4179                           dev->status,
4180                           dev->invitation_reqs);
4181         if (os_snprintf_error(end - pos, res))
4182                 return pos - buf;
4183         pos += res;
4184
4185         if (dev->ext_listen_period) {
4186                 res = os_snprintf(pos, end - pos,
4187                                   "ext_listen_period=%u\n"
4188                                   "ext_listen_interval=%u\n",
4189                                   dev->ext_listen_period,
4190                                   dev->ext_listen_interval);
4191                 if (os_snprintf_error(end - pos, res))
4192                         return pos - buf;
4193                 pos += res;
4194         }
4195
4196         if (dev->oper_ssid_len) {
4197                 res = os_snprintf(pos, end - pos,
4198                                   "oper_ssid=%s\n",
4199                                   wpa_ssid_txt(dev->oper_ssid,
4200                                                dev->oper_ssid_len));
4201                 if (os_snprintf_error(end - pos, res))
4202                         return pos - buf;
4203                 pos += res;
4204         }
4205
4206 #ifdef CONFIG_WIFI_DISPLAY
4207         if (dev->info.wfd_subelems) {
4208                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4209                 if (os_snprintf_error(end - pos, res))
4210                         return pos - buf;
4211                 pos += res;
4212
4213                 pos += wpa_snprintf_hex(pos, end - pos,
4214                                         wpabuf_head(dev->info.wfd_subelems),
4215                                         wpabuf_len(dev->info.wfd_subelems));
4216
4217                 res = os_snprintf(pos, end - pos, "\n");
4218                 if (os_snprintf_error(end - pos, res))
4219                         return pos - buf;
4220                 pos += res;
4221         }
4222 #endif /* CONFIG_WIFI_DISPLAY */
4223
4224         return pos - buf;
4225 }
4226
4227
4228 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4229 {
4230         return p2p_get_device(p2p, addr) != NULL;
4231 }
4232
4233
4234 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4235 {
4236         if (enabled) {
4237                 p2p_dbg(p2p, "Client discoverability enabled");
4238                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4239         } else {
4240                 p2p_dbg(p2p, "Client discoverability disabled");
4241                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4242         }
4243 }
4244
4245
4246 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4247                                               u32 duration2, u32 interval2)
4248 {
4249         struct wpabuf *req;
4250         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4251         u8 *len;
4252
4253         req = wpabuf_alloc(100);
4254         if (req == NULL)
4255                 return NULL;
4256
4257         if (duration1 || interval1) {
4258                 os_memset(&desc1, 0, sizeof(desc1));
4259                 desc1.count_type = 1;
4260                 desc1.duration = duration1;
4261                 desc1.interval = interval1;
4262                 ptr1 = &desc1;
4263
4264                 if (duration2 || interval2) {
4265                         os_memset(&desc2, 0, sizeof(desc2));
4266                         desc2.count_type = 2;
4267                         desc2.duration = duration2;
4268                         desc2.interval = interval2;
4269                         ptr2 = &desc2;
4270                 }
4271         }
4272
4273         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4274         len = p2p_buf_add_ie_hdr(req);
4275         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4276         p2p_buf_update_ie_hdr(req, len);
4277
4278         return req;
4279 }
4280
4281
4282 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4283                      const u8 *own_interface_addr, unsigned int freq,
4284                      u32 duration1, u32 interval1, u32 duration2,
4285                      u32 interval2)
4286 {
4287         struct wpabuf *req;
4288
4289         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4290                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4291                 "dur2=%u int2=%u",
4292                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4293                 freq, duration1, interval1, duration2, interval2);
4294
4295         req = p2p_build_presence_req(duration1, interval1, duration2,
4296                                      interval2);
4297         if (req == NULL)
4298                 return -1;
4299
4300         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4301         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4302                             go_interface_addr,
4303                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4304                 p2p_dbg(p2p, "Failed to send Action frame");
4305         }
4306         wpabuf_free(req);
4307
4308         return 0;
4309 }
4310
4311
4312 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4313                                                size_t noa_len, u8 dialog_token)
4314 {
4315         struct wpabuf *resp;
4316         u8 *len;
4317
4318         resp = wpabuf_alloc(100 + noa_len);
4319         if (resp == NULL)
4320                 return NULL;
4321
4322         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4323         len = p2p_buf_add_ie_hdr(resp);
4324         p2p_buf_add_status(resp, status);
4325         if (noa) {
4326                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4327                 wpabuf_put_le16(resp, noa_len);
4328                 wpabuf_put_data(resp, noa, noa_len);
4329         } else
4330                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4331         p2p_buf_update_ie_hdr(resp, len);
4332
4333         return resp;
4334 }
4335
4336
4337 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4338                                      const u8 *sa, const u8 *data, size_t len,
4339                                      int rx_freq)
4340 {
4341         struct p2p_message msg;
4342         u8 status;
4343         struct wpabuf *resp;
4344         size_t g;
4345         struct p2p_group *group = NULL;
4346         int parsed = 0;
4347         u8 noa[50];
4348         int noa_len;
4349
4350         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4351
4352         for (g = 0; g < p2p->num_groups; g++) {
4353                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4354                               ETH_ALEN) == 0) {
4355                         group = p2p->groups[g];
4356                         break;
4357                 }
4358         }
4359         if (group == NULL) {
4360                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4361                         MACSTR, MAC2STR(da));
4362                 return;
4363         }
4364
4365         if (p2p_parse(data, len, &msg) < 0) {
4366                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4367                 status = P2P_SC_FAIL_INVALID_PARAMS;
4368                 goto fail;
4369         }
4370         parsed = 1;
4371
4372         if (msg.noa == NULL) {
4373                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4374                 status = P2P_SC_FAIL_INVALID_PARAMS;
4375                 goto fail;
4376         }
4377
4378         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4379
4380 fail:
4381         if (p2p->cfg->get_noa)
4382                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4383                                             sizeof(noa));
4384         else
4385                 noa_len = -1;
4386         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4387                                        noa_len > 0 ? noa_len : 0,
4388                                        msg.dialog_token);
4389         if (parsed)
4390                 p2p_parse_free(&msg);
4391         if (resp == NULL)
4392                 return;
4393
4394         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4395         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4396                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4397                 p2p_dbg(p2p, "Failed to send Action frame");
4398         }
4399         wpabuf_free(resp);
4400 }
4401
4402
4403 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4404                                       const u8 *sa, const u8 *data, size_t len)
4405 {
4406         struct p2p_message msg;
4407
4408         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4409
4410         if (p2p_parse(data, len, &msg) < 0) {
4411                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4412                 return;
4413         }
4414
4415         if (msg.status == NULL || msg.noa == NULL) {
4416                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4417                 p2p_parse_free(&msg);
4418                 return;
4419         }
4420
4421         if (p2p->cfg->presence_resp) {
4422                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4423                                         msg.noa, msg.noa_len);
4424         }
4425
4426         if (*msg.status) {
4427                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4428                         *msg.status);
4429                 p2p_parse_free(&msg);
4430                 return;
4431         }
4432
4433         p2p_dbg(p2p, "P2P Presence Request was accepted");
4434         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4435                     msg.noa, msg.noa_len);
4436         /* TODO: process NoA */
4437         p2p_parse_free(&msg);
4438 }
4439
4440
4441 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4442 {
4443         struct p2p_data *p2p = eloop_ctx;
4444
4445         if (p2p->ext_listen_interval) {
4446                 /* Schedule next extended listen timeout */
4447                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4448                                        p2p->ext_listen_interval_usec,
4449                                        p2p_ext_listen_timeout, p2p, NULL);
4450         }
4451
4452         if ((p2p->cfg->is_p2p_in_progress &&
4453              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4454             (p2p->pending_action_state == P2P_PENDING_PD &&
4455              p2p->pd_retries > 0)) {
4456                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4457                         p2p_state_txt(p2p->state));
4458                 return;
4459         }
4460
4461         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4462                 /*
4463                  * This should not really happen, but it looks like the Listen
4464                  * command may fail is something else (e.g., a scan) was
4465                  * running at an inconvenient time. As a workaround, allow new
4466                  * Extended Listen operation to be started.
4467                  */
4468                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4469                 p2p->ext_listen_only = 0;
4470                 p2p_set_state(p2p, P2P_IDLE);
4471         }
4472
4473         if (p2p->state != P2P_IDLE) {
4474                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4475                 return;
4476         }
4477
4478         p2p_dbg(p2p, "Extended Listen timeout");
4479         p2p->ext_listen_only = 1;
4480         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4481                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4482                 p2p->ext_listen_only = 0;
4483         }
4484 }
4485
4486
4487 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4488                    unsigned int interval)
4489 {
4490         if (period > 65535 || interval > 65535 || period > interval ||
4491             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4492                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4493                         period, interval);
4494                 return -1;
4495         }
4496
4497         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4498
4499         if (interval == 0) {
4500                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4501                 p2p->ext_listen_period = 0;
4502                 p2p->ext_listen_interval = 0;
4503                 return 0;
4504         }
4505
4506         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4507                 period, interval);
4508         p2p->ext_listen_period = period;
4509         p2p->ext_listen_interval = interval;
4510         p2p->ext_listen_interval_sec = interval / 1000;
4511         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4512
4513         eloop_register_timeout(p2p->ext_listen_interval_sec,
4514                                p2p->ext_listen_interval_usec,
4515                                p2p_ext_listen_timeout, p2p, NULL);
4516
4517         return 0;
4518 }
4519
4520
4521 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4522                       const u8 *ie, size_t ie_len)
4523 {
4524         struct p2p_message msg;
4525
4526         if (bssid == NULL || ie == NULL)
4527                 return;
4528
4529         os_memset(&msg, 0, sizeof(msg));
4530         if (p2p_parse_ies(ie, ie_len, &msg))
4531                 return;
4532         if (msg.minor_reason_code == NULL) {
4533                 p2p_parse_free(&msg);
4534                 return;
4535         }
4536
4537         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4538                 " reason_code=%u minor_reason_code=%u",
4539                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4540
4541         p2p_parse_free(&msg);
4542 }
4543
4544
4545 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4546                         const u8 *ie, size_t ie_len)
4547 {
4548         struct p2p_message msg;
4549
4550         if (bssid == NULL || ie == NULL)
4551                 return;
4552
4553         os_memset(&msg, 0, sizeof(msg));
4554         if (p2p_parse_ies(ie, ie_len, &msg))
4555                 return;
4556         if (msg.minor_reason_code == NULL) {
4557                 p2p_parse_free(&msg);
4558                 return;
4559         }
4560
4561         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4562                 " reason_code=%u minor_reason_code=%u",
4563                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4564
4565         p2p_parse_free(&msg);
4566 }
4567
4568
4569 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4570 {
4571         if (enabled) {
4572                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4573                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4574         } else {
4575                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4576                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4577         }
4578 }
4579
4580
4581 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4582                                  u8 *op_channel)
4583 {
4584         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4585 }
4586
4587
4588 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4589                            u8 forced)
4590 {
4591         if (p2p_channel_to_freq(reg_class, channel) < 0)
4592                 return -1;
4593
4594         /*
4595          * Listen channel was set in configuration or set by control interface;
4596          * cannot override it.
4597          */
4598         if (p2p->cfg->channel_forced && forced == 0) {
4599                 p2p_dbg(p2p,
4600                         "Listen channel was previously configured - do not override based on optimization");
4601                 return -1;
4602         }
4603
4604         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4605                 reg_class, channel);
4606
4607         if (p2p->state == P2P_IDLE) {
4608                 p2p->cfg->reg_class = reg_class;
4609                 p2p->cfg->channel = channel;
4610                 p2p->cfg->channel_forced = forced;
4611         } else {
4612                 p2p_dbg(p2p, "Defer setting listen channel");
4613                 p2p->pending_reg_class = reg_class;
4614                 p2p->pending_channel = channel;
4615                 p2p->pending_channel_forced = forced;
4616         }
4617
4618         return 0;
4619 }
4620
4621
4622 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4623 {
4624         return p2p->cfg->channel;
4625 }
4626
4627
4628 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4629 {
4630         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4631         if (postfix == NULL) {
4632                 p2p->cfg->ssid_postfix_len = 0;
4633                 return 0;
4634         }
4635         if (len > sizeof(p2p->cfg->ssid_postfix))
4636                 return -1;
4637         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4638         p2p->cfg->ssid_postfix_len = len;
4639         return 0;
4640 }
4641
4642
4643 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4644                          int cfg_op_channel)
4645 {
4646         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4647                 return -1;
4648
4649         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4650                 op_reg_class, op_channel);
4651         p2p->cfg->op_reg_class = op_reg_class;
4652         p2p->cfg->op_channel = op_channel;
4653         p2p->cfg->cfg_op_channel = cfg_op_channel;
4654         return 0;
4655 }
4656
4657
4658 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4659                       const struct p2p_channel *pref_chan)
4660 {
4661         struct p2p_channel *n;
4662
4663         if (pref_chan) {
4664                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4665                 if (n == NULL)
4666                         return -1;
4667                 os_memcpy(n, pref_chan,
4668                           num_pref_chan * sizeof(struct p2p_channel));
4669         } else
4670                 n = NULL;
4671
4672         os_free(p2p->cfg->pref_chan);
4673         p2p->cfg->pref_chan = n;
4674         p2p->cfg->num_pref_chan = num_pref_chan;
4675
4676         return 0;
4677 }
4678
4679
4680 int p2p_set_no_go_freq(struct p2p_data *p2p,
4681                        const struct wpa_freq_range_list *list)
4682 {
4683         struct wpa_freq_range *tmp;
4684
4685         if (list == NULL || list->num == 0) {
4686                 os_free(p2p->no_go_freq.range);
4687                 p2p->no_go_freq.range = NULL;
4688                 p2p->no_go_freq.num = 0;
4689                 return 0;
4690         }
4691
4692         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4693         if (tmp == NULL)
4694                 return -1;
4695         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4696         os_free(p2p->no_go_freq.range);
4697         p2p->no_go_freq.range = tmp;
4698         p2p->no_go_freq.num = list->num;
4699         p2p_dbg(p2p, "Updated no GO chan list");
4700
4701         return 0;
4702 }
4703
4704
4705 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4706                            u8 *iface_addr)
4707 {
4708         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4709         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4710                 return -1;
4711         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4712         return 0;
4713 }
4714
4715
4716 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4717                            u8 *dev_addr)
4718 {
4719         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4720         if (dev == NULL)
4721                 return -1;
4722         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4723         return 0;
4724 }
4725
4726
4727 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4728 {
4729         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4730         if (is_zero_ether_addr(p2p->peer_filter))
4731                 p2p_dbg(p2p, "Disable peer filter");
4732         else
4733                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4734                         MAC2STR(p2p->peer_filter));
4735 }
4736
4737
4738 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4739 {
4740         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4741         if (p2p->cross_connect == enabled)
4742                 return;
4743         p2p->cross_connect = enabled;
4744         /* TODO: may need to tear down any action group where we are GO(?) */
4745 }
4746
4747
4748 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4749 {
4750         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4751         if (dev == NULL)
4752                 return -1;
4753         if (dev->oper_freq <= 0)
4754                 return -1;
4755         return dev->oper_freq;
4756 }
4757
4758
4759 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4760 {
4761         p2p_dbg(p2p, "Intra BSS distribution %s",
4762                 enabled ? "enabled" : "disabled");
4763         p2p->cfg->p2p_intra_bss = enabled;
4764 }
4765
4766
4767 void p2p_update_channel_list(struct p2p_data *p2p,
4768                              const struct p2p_channels *chan,
4769                              const struct p2p_channels *cli_chan)
4770 {
4771         p2p_dbg(p2p, "Update channel list");
4772         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4773         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4774         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4775                   sizeof(struct p2p_channels));
4776         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4777 }
4778
4779
4780 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4781                     const u8 *src, const u8 *bssid, const u8 *buf,
4782                     size_t len, unsigned int wait_time)
4783 {
4784         if (p2p->p2p_scan_running) {
4785                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4786                 if (p2p->after_scan_tx) {
4787                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4788                         os_free(p2p->after_scan_tx);
4789                 }
4790                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4791                                                len);
4792                 if (p2p->after_scan_tx == NULL)
4793                         return -1;
4794                 p2p->after_scan_tx->freq = freq;
4795                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4796                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4797                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4798                 p2p->after_scan_tx->len = len;
4799                 p2p->after_scan_tx->wait_time = wait_time;
4800                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4801                 return 0;
4802         }
4803
4804         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4805                                      buf, len, wait_time);
4806 }
4807
4808
4809 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4810                            int freq_overall)
4811 {
4812         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4813                 freq_24, freq_5, freq_overall);
4814         p2p->best_freq_24 = freq_24;
4815         p2p->best_freq_5 = freq_5;
4816         p2p->best_freq_overall = freq_overall;
4817 }
4818
4819
4820 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4821 {
4822         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4823         p2p->own_freq_preference = freq;
4824 }
4825
4826
4827 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4828 {
4829         if (p2p == NULL || p2p->go_neg_peer == NULL)
4830                 return NULL;
4831         return p2p->go_neg_peer->info.p2p_device_addr;
4832 }
4833
4834
4835 const struct p2p_peer_info *
4836 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4837 {
4838         struct p2p_device *dev;
4839
4840         if (addr) {
4841                 dev = p2p_get_device(p2p, addr);
4842                 if (!dev)
4843                         return NULL;
4844
4845                 if (!next) {
4846                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4847                                 return NULL;
4848
4849                         return &dev->info;
4850                 } else {
4851                         do {
4852                                 dev = dl_list_first(&dev->list,
4853                                                     struct p2p_device,
4854                                                     list);
4855                                 if (!dev || &dev->list == &p2p->devices)
4856                                         return NULL;
4857                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4858                 }
4859         } else {
4860                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4861                 if (!dev)
4862                         return NULL;
4863                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4864                         dev = dl_list_first(&dev->list,
4865                                             struct p2p_device,
4866                                             list);
4867                         if (!dev || &dev->list == &p2p->devices)
4868                                 return NULL;
4869                 }
4870         }
4871
4872         return &dev->info;
4873 }
4874
4875
4876 int p2p_in_progress(struct p2p_data *p2p)
4877 {
4878         if (p2p == NULL)
4879                 return 0;
4880         if (p2p->state == P2P_SEARCH)
4881                 return 2;
4882         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4883 }
4884
4885
4886 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4887                             u8 client_timeout)
4888 {
4889         if (p2p) {
4890                 p2p->go_timeout = go_timeout;
4891                 p2p->client_timeout = client_timeout;
4892         }
4893 }
4894
4895
4896 #ifdef CONFIG_WIFI_DISPLAY
4897
4898 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4899 {
4900         size_t g;
4901         struct p2p_group *group;
4902
4903         for (g = 0; g < p2p->num_groups; g++) {
4904                 group = p2p->groups[g];
4905                 p2p_group_force_beacon_update_ies(group);
4906         }
4907 }
4908
4909
4910 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4911 {
4912         wpabuf_free(p2p->wfd_ie_beacon);
4913         p2p->wfd_ie_beacon = ie;
4914         p2p_update_wfd_ie_groups(p2p);
4915         return 0;
4916 }
4917
4918
4919 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4920 {
4921         wpabuf_free(p2p->wfd_ie_probe_req);
4922         p2p->wfd_ie_probe_req = ie;
4923         return 0;
4924 }
4925
4926
4927 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4928 {
4929         wpabuf_free(p2p->wfd_ie_probe_resp);
4930         p2p->wfd_ie_probe_resp = ie;
4931         p2p_update_wfd_ie_groups(p2p);
4932         return 0;
4933 }
4934
4935
4936 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4937 {
4938         wpabuf_free(p2p->wfd_ie_assoc_req);
4939         p2p->wfd_ie_assoc_req = ie;
4940         return 0;
4941 }
4942
4943
4944 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4945 {
4946         wpabuf_free(p2p->wfd_ie_invitation);
4947         p2p->wfd_ie_invitation = ie;
4948         return 0;
4949 }
4950
4951
4952 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4953 {
4954         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4955         p2p->wfd_ie_prov_disc_req = ie;
4956         return 0;
4957 }
4958
4959
4960 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4961 {
4962         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4963         p2p->wfd_ie_prov_disc_resp = ie;
4964         return 0;
4965 }
4966
4967
4968 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4969 {
4970         wpabuf_free(p2p->wfd_ie_go_neg);
4971         p2p->wfd_ie_go_neg = ie;
4972         return 0;
4973 }
4974
4975
4976 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4977 {
4978         wpabuf_free(p2p->wfd_dev_info);
4979         if (elem) {
4980                 p2p->wfd_dev_info = wpabuf_dup(elem);
4981                 if (p2p->wfd_dev_info == NULL)
4982                         return -1;
4983         } else
4984                 p2p->wfd_dev_info = NULL;
4985
4986         return 0;
4987 }
4988
4989
4990 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4991 {
4992         wpabuf_free(p2p->wfd_assoc_bssid);
4993         if (elem) {
4994                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4995                 if (p2p->wfd_assoc_bssid == NULL)
4996                         return -1;
4997         } else
4998                 p2p->wfd_assoc_bssid = NULL;
4999
5000         return 0;
5001 }
5002
5003
5004 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5005                                   const struct wpabuf *elem)
5006 {
5007         wpabuf_free(p2p->wfd_coupled_sink_info);
5008         if (elem) {
5009                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5010                 if (p2p->wfd_coupled_sink_info == NULL)
5011                         return -1;
5012         } else
5013                 p2p->wfd_coupled_sink_info = NULL;
5014
5015         return 0;
5016 }
5017
5018 #endif /* CONFIG_WIFI_DISPLAY */
5019
5020
5021 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5022                      int max_disc_tu)
5023 {
5024         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5025                 return -1;
5026
5027         p2p->min_disc_int = min_disc_int;
5028         p2p->max_disc_int = max_disc_int;
5029         p2p->max_disc_tu = max_disc_tu;
5030         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5031                 min_disc_int, max_disc_int, max_disc_tu);
5032
5033         return 0;
5034 }
5035
5036
5037 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5038 {
5039         va_list ap;
5040         char buf[500];
5041
5042         if (!p2p->cfg->debug_print)
5043                 return;
5044
5045         va_start(ap, fmt);
5046         vsnprintf(buf, sizeof(buf), fmt, ap);
5047         buf[sizeof(buf) - 1] = '\0';
5048         va_end(ap);
5049         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5050 }
5051
5052
5053 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5054 {
5055         va_list ap;
5056         char buf[500];
5057
5058         if (!p2p->cfg->debug_print)
5059                 return;
5060
5061         va_start(ap, fmt);
5062         vsnprintf(buf, sizeof(buf), fmt, ap);
5063         buf[sizeof(buf) - 1] = '\0';
5064         va_end(ap);
5065         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5066 }
5067
5068
5069 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5070 {
5071         va_list ap;
5072         char buf[500];
5073
5074         if (!p2p->cfg->debug_print)
5075                 return;
5076
5077         va_start(ap, fmt);
5078         vsnprintf(buf, sizeof(buf), fmt, ap);
5079         buf[sizeof(buf) - 1] = '\0';
5080         va_end(ap);
5081         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5082 }
5083
5084
5085 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5086                              void (*peer_callback)(struct p2p_peer_info *peer,
5087                                                    void *user_data),
5088                              void *user_data)
5089 {
5090         struct p2p_device *dev, *n;
5091
5092         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5093                 peer_callback(&dev->info, user_data);
5094         }
5095 }
5096
5097
5098 #ifdef CONFIG_WPS_NFC
5099
5100 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5101                                               int client_freq,
5102                                               const u8 *go_dev_addr,
5103                                               const u8 *ssid, size_t ssid_len)
5104 {
5105         struct wpabuf *buf;
5106         u8 op_class, channel;
5107         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5108
5109         buf = wpabuf_alloc(1000);
5110         if (buf == NULL)
5111                 return NULL;
5112
5113         op_class = p2p->cfg->reg_class;
5114         channel = p2p->cfg->channel;
5115
5116         p2p_buf_add_capability(buf, p2p->dev_capab &
5117                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5118         p2p_buf_add_device_info(buf, p2p, NULL);
5119
5120         if (p2p->num_groups > 0) {
5121                 int freq = p2p_group_get_freq(p2p->groups[0]);
5122                 role = P2P_GO_IN_A_GROUP;
5123                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5124                         p2p_dbg(p2p,
5125                                 "Unknown GO operating frequency %d MHz for NFC handover",
5126                                 freq);
5127                         wpabuf_free(buf);
5128                         return NULL;
5129                 }
5130         } else if (client_freq > 0) {
5131                 role = P2P_CLIENT_IN_A_GROUP;
5132                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5133                         p2p_dbg(p2p,
5134                                 "Unknown client operating frequency %d MHz for NFC handover",
5135                                 client_freq);
5136                         wpabuf_free(buf);
5137                         return NULL;
5138                 }
5139         }
5140
5141         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5142                                        channel, role);
5143
5144         if (p2p->num_groups > 0) {
5145                 /* Limit number of clients to avoid very long message */
5146                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5147                 p2p_group_buf_add_id(p2p->groups[0], buf);
5148         } else if (client_freq > 0 &&
5149                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5150                    ssid && ssid_len > 0) {
5151                 /*
5152                  * Add the optional P2P Group ID to indicate in which group this
5153                  * device is a P2P Client.
5154                  */
5155                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5156         }
5157
5158         return buf;
5159 }
5160
5161
5162 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5163                                            int client_freq,
5164                                            const u8 *go_dev_addr,
5165                                            const u8 *ssid, size_t ssid_len)
5166 {
5167         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5168                                       ssid_len);
5169 }
5170
5171
5172 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5173                                            int client_freq,
5174                                            const u8 *go_dev_addr,
5175                                            const u8 *ssid, size_t ssid_len)
5176 {
5177         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5178                                       ssid_len);
5179 }
5180
5181
5182 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5183                                         struct p2p_nfc_params *params)
5184 {
5185         struct p2p_message msg;
5186         struct p2p_device *dev;
5187         const u8 *p2p_dev_addr;
5188         int freq;
5189         enum p2p_role_indication role;
5190
5191         params->next_step = NO_ACTION;
5192
5193         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5194                                    params->p2p_attr, params->p2p_len, &msg)) {
5195                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5196                 p2p_parse_free(&msg);
5197                 return -1;
5198         }
5199
5200         if (msg.p2p_device_addr)
5201                 p2p_dev_addr = msg.p2p_device_addr;
5202         else if (msg.device_id)
5203                 p2p_dev_addr = msg.device_id;
5204         else {
5205                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5206                 p2p_parse_free(&msg);
5207                 return -1;
5208         }
5209
5210         if (msg.oob_dev_password) {
5211                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5212                           msg.oob_dev_password_len);
5213                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5214         }
5215
5216         dev = p2p_create_device(p2p, p2p_dev_addr);
5217         if (dev == NULL) {
5218                 p2p_parse_free(&msg);
5219                 return -1;
5220         }
5221
5222         params->peer = &dev->info;
5223
5224         os_get_reltime(&dev->last_seen);
5225         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5226         p2p_copy_wps_info(p2p, dev, 0, &msg);
5227
5228         if (!msg.oob_go_neg_channel) {
5229                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5230                 return -1;
5231         }
5232
5233         if (msg.oob_go_neg_channel[3] == 0 &&
5234             msg.oob_go_neg_channel[4] == 0)
5235                 freq = 0;
5236         else
5237                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5238                                            msg.oob_go_neg_channel[4]);
5239         if (freq < 0) {
5240                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5241                 return -1;
5242         }
5243         role = msg.oob_go_neg_channel[5];
5244
5245         if (role == P2P_GO_IN_A_GROUP) {
5246                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5247                 params->go_freq = freq;
5248         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5249                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5250                         freq);
5251                 params->go_freq = freq;
5252         } else
5253                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5254         dev->oob_go_neg_freq = freq;
5255
5256         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5257                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5258                                            p2p->cfg->channel);
5259                 if (freq < 0) {
5260                         p2p_dbg(p2p, "Own listen channel not known");
5261                         return -1;
5262                 }
5263                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5264                 dev->oob_go_neg_freq = freq;
5265         }
5266
5267         if (msg.group_id) {
5268                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5269                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5270                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5271                           params->go_ssid_len);
5272         }
5273
5274         if (dev->flags & P2P_DEV_USER_REJECTED) {
5275                 p2p_dbg(p2p, "Do not report rejected device");
5276                 p2p_parse_free(&msg);
5277                 return 0;
5278         }
5279
5280         if (!(dev->flags & P2P_DEV_REPORTED)) {
5281                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5282                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5283                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5284         }
5285         p2p_parse_free(&msg);
5286
5287         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5288                 params->next_step = BOTH_GO;
5289         else if (role == P2P_GO_IN_A_GROUP)
5290                 params->next_step = JOIN_GROUP;
5291         else if (role == P2P_CLIENT_IN_A_GROUP) {
5292                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5293                 params->next_step = PEER_CLIENT;
5294         } else if (p2p->num_groups > 0)
5295                 params->next_step = AUTH_JOIN;
5296         else if (params->sel)
5297                 params->next_step = INIT_GO_NEG;
5298         else
5299                 params->next_step = RESP_GO_NEG;
5300
5301         return 0;
5302 }
5303
5304
5305 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5306                                       int go_intent,
5307                                       const u8 *own_interface_addr)
5308 {
5309
5310         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5311         if (dev_pw_id == 0) {
5312                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5313                 return;
5314         }
5315
5316         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5317                 dev_pw_id);
5318
5319         p2p->go_intent = go_intent;
5320         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5321 }
5322
5323 #endif /* CONFIG_WPS_NFC */
5324
5325
5326 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5327 {
5328         if (len < 8 || len > 63)
5329                 return -1;
5330         p2p->cfg->passphrase_len = len;
5331         return 0;
5332 }
5333
5334
5335 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5336 {
5337         p2p->vendor_elem = vendor_elem;
5338 }
5339
5340
5341 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5342 {
5343         struct p2p_data *p2p = eloop_ctx;
5344
5345         p2p_dbg(p2p,
5346                 "Timeout on waiting peer to become ready for GO Negotiation");
5347         p2p_go_neg_failed(p2p, -1);
5348 }