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