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, NULL, 0);
 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, NULL, 0);
 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                                  struct os_reltime *rx_time)
 473 {
 474         struct p2p_group_info info;
 475         size_t c;
 476         struct p2p_device *dev;
 477
 478         if (gi == NULL)
 479                 return 0;
 480
 481         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 482                 return -1;
 483
 484         /*
 485          * Clear old data for this group; if the devices are still in the
 486          * group, the information will be restored in the loop following this.
 487          */
 488         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 489                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 490                               ETH_ALEN) == 0) {
 491                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 492                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 493                 }
 494         }
 495
 496         for (c = 0; c < info.num_clients; c++) {
 497                 struct p2p_client_info *cli = &info.client[c];
 498                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 499                               ETH_ALEN) == 0)
 500                         continue; /* ignore our own entry */
 501                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 502                 if (dev) {
 503                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 504                                           P2P_DEV_PROBE_REQ_ONLY)) {
 505                                 /*
 506                                  * Update information since we have not
 507                                  * received this directly from the client.
 508                                  */
 509                                 p2p_copy_client_info(dev, cli);
 510                         } else {
 511                                 /*
 512                                  * Need to update P2P Client Discoverability
 513                                  * flag since it is valid only in P2P Group
 514                                  * Info attribute.
 515                                  */
 516                                 dev->info.dev_capab &=
 517                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 518                                 dev->info.dev_capab |=
 519                                         cli->dev_capab &
 520                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 521                         }
 522                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 523                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 524                         }
 525                 } else {
 526                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 527                         if (dev == NULL)
 528                                 continue;
 529                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 530                         p2p_copy_client_info(dev, cli);
 531                         dev->oper_freq = freq;
 532                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 533                                             dev->info.p2p_device_addr,
 534                                             &dev->info, 1);
 535                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 536                 }
 537
 538                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 539                           ETH_ALEN);
 540                 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 541                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 542                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 543                           ETH_ALEN);
 544                 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
 545         }
 546
 547         return 0;
 548 }
 549
 550
 551 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 552                               int probe_req, const struct p2p_message *msg)
 553 {
 554         os_memcpy(dev->info.device_name, msg->device_name,
 555                   sizeof(dev->info.device_name));
 556
 557         if (msg->manufacturer &&
 558             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 559                 os_memset(dev->info.manufacturer, 0,
 560                           sizeof(dev->info.manufacturer));
 561                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 562                           msg->manufacturer_len);
 563         }
 564
 565         if (msg->model_name &&
 566             msg->model_name_len < sizeof(dev->info.model_name)) {
 567                 os_memset(dev->info.model_name, 0,
 568                           sizeof(dev->info.model_name));
 569                 os_memcpy(dev->info.model_name, msg->model_name,
 570                           msg->model_name_len);
 571         }
 572
 573         if (msg->model_number &&
 574             msg->model_number_len < sizeof(dev->info.model_number)) {
 575                 os_memset(dev->info.model_number, 0,
 576                           sizeof(dev->info.model_number));
 577                 os_memcpy(dev->info.model_number, msg->model_number,
 578                           msg->model_number_len);
 579         }
 580
 581         if (msg->serial_number &&
 582             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 583                 os_memset(dev->info.serial_number, 0,
 584                           sizeof(dev->info.serial_number));
 585                 os_memcpy(dev->info.serial_number, msg->serial_number,
 586                           msg->serial_number_len);
 587         }
 588
 589         if (msg->pri_dev_type)
 590                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 591                           sizeof(dev->info.pri_dev_type));
 592         else if (msg->wps_pri_dev_type)
 593                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 594                           sizeof(dev->info.pri_dev_type));
 595
 596         if (msg->wps_sec_dev_type_list) {
 597                 os_memcpy(dev->info.wps_sec_dev_type_list,
 598                           msg->wps_sec_dev_type_list,
 599                           msg->wps_sec_dev_type_list_len);
 600                 dev->info.wps_sec_dev_type_list_len =
 601                         msg->wps_sec_dev_type_list_len;
 602         }
 603
 604         if (msg->capability) {
 605                 /*
 606                  * P2P Client Discoverability bit is reserved in all frames
 607                  * that use this function, so do not change its value here.
 608                  */
 609                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 610                 dev->info.dev_capab |= msg->capability[0] &
 611                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 612                 dev->info.group_capab = msg->capability[1];
 613         }
 614
 615         if (msg->ext_listen_timing) {
 616                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 617                 dev->ext_listen_interval =
 618                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 619         }
 620
 621         if (!probe_req) {
 622                 u16 new_config_methods;
 623                 new_config_methods = msg->config_methods ?
 624                         msg->config_methods : msg->wps_config_methods;
 625                 if (new_config_methods &&
 626                     dev->info.config_methods != new_config_methods) {
 627                         p2p_dbg(p2p, "Update peer " MACSTR
 628                                 " config_methods 0x%x -> 0x%x",
 629                                 MAC2STR(dev->info.p2p_device_addr),
 630                                 dev->info.config_methods,
 631                                 new_config_methods);
 632                         dev->info.config_methods = new_config_methods;
 633                 }
 634         }
 635 }
 636
 637
 638 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 639                                          size_t ies_len)
 640 {
 641         const u8 *pos, *end;
 642         u8 id, len;
 643
 644         wpabuf_free(dev->info.vendor_elems);
 645         dev->info.vendor_elems = NULL;
 646
 647         end = ies + ies_len;
 648
 649         for (pos = ies; pos + 1 < end; pos += len) {
 650                 id = *pos++;
 651                 len = *pos++;
 652
 653                 if (pos + len > end)
 654                         break;
 655
 656                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 657                         continue;
 658
 659                 if (len >= 4) {
 660                         u32 type = WPA_GET_BE32(pos);
 661
 662                         if (type == WPA_IE_VENDOR_TYPE ||
 663                             type == WMM_IE_VENDOR_TYPE ||
 664                             type == WPS_IE_VENDOR_TYPE ||
 665                             type == P2P_IE_VENDOR_TYPE ||
 666                             type == WFD_IE_VENDOR_TYPE)
 667                                 continue;
 668                 }
 669
 670                 /* Unknown vendor element - make raw IE data available */
 671                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 672                         break;
 673                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 674         }
 675 }
 676
 677
 678 static int p2p_compare_wfd_info(struct p2p_device *dev,
 679                               const struct p2p_message *msg)
 680 {
 681         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 682                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 683                         return 1;
 684
 685                 return os_memcmp(dev->info.wfd_subelems->buf,
 686                                  msg->wfd_subelems->buf,
 687                                  dev->info.wfd_subelems->used);
 688         }
 689         if (dev->info.wfd_subelems || msg->wfd_subelems)
 690                 return 1;
 691
 692         return 0;
 693 }
 694
 695
 696 /**
 697  * p2p_add_device - Add peer entries based on scan results or P2P frames
 698  * @p2p: P2P module context from p2p_init()
 699  * @addr: Source address of Beacon or Probe Response frame (may be either
 700  *      P2P Device Address or P2P Interface Address)
 701  * @level: Signal level (signal strength of the received frame from the peer)
 702  * @freq: Frequency on which the Beacon or Probe Response frame was received
 703  * @rx_time: Time when the result was received
 704  * @ies: IEs from the Beacon or Probe Response frame
 705  * @ies_len: Length of ies buffer in octets
 706  * @scan_res: Whether this was based on scan results
 707  * Returns: 0 on success, -1 on failure
 708  *
 709  * If the scan result is for a GO, the clients in the group will also be added
 710  * to the peer table. This function can also be used with some other frames
 711  * like Provision Discovery Request that contains P2P Capability and P2P Device
 712  * Info attributes.
 713  */
 714 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 715                    struct os_reltime *rx_time, int level, const u8 *ies,
 716                    size_t ies_len, int scan_res)
 717 {
 718         struct p2p_device *dev;
 719         struct p2p_message msg;
 720         const u8 *p2p_dev_addr;
 721         int wfd_changed;
 722         int i;
 723         struct os_reltime time_now;
 724
 725         os_memset(&msg, 0, sizeof(msg));
 726         if (p2p_parse_ies(ies, ies_len, &msg)) {
 727                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 728                 p2p_parse_free(&msg);
 729                 return -1;
 730         }
 731
 732         if (msg.p2p_device_addr)
 733                 p2p_dev_addr = msg.p2p_device_addr;
 734         else if (msg.device_id)
 735                 p2p_dev_addr = msg.device_id;
 736         else {
 737                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 738                 p2p_parse_free(&msg);
 739                 return -1;
 740         }
 741
 742         if (!is_zero_ether_addr(p2p->peer_filter) &&
 743             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 744                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 745                         " due to peer filter", MAC2STR(p2p_dev_addr));
 746                 p2p_parse_free(&msg);
 747                 return 0;
 748         }
 749
 750         dev = p2p_create_device(p2p, p2p_dev_addr);
 751         if (dev == NULL) {
 752                 p2p_parse_free(&msg);
 753                 return -1;
 754         }
 755
 756         if (rx_time == NULL) {
 757                 os_get_reltime(&time_now);
 758                 rx_time = &time_now;
 759         }
 760
 761         /*
 762          * Update the device entry only if the new peer
 763          * entry is newer than the one previously stored, or if
 764          * the device was previously seen as a P2P Client in a group
 765          * and the new entry isn't older than a threshold.
 766          */
 767         if (dev->last_seen.sec > 0 &&
 768             os_reltime_before(rx_time, &dev->last_seen) &&
 769             (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
 770              os_reltime_expired(&dev->last_seen, rx_time,
 771                                 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
 772                 p2p_dbg(p2p,
 773                         "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
 774                         (unsigned int) rx_time->sec,
 775                         (unsigned int) rx_time->usec,
 776                         (unsigned int) dev->last_seen.sec,
 777                         (unsigned int) dev->last_seen.usec,
 778                         dev->flags);
 779                 p2p_parse_free(&msg);
 780                 return -1;
 781         }
 782
 783         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 784
 785         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
 786                         P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
 787
 788         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 789                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 790         if (msg.ssid &&
 791             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 792             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 793              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 794              != 0)) {
 795                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 796                 dev->oper_ssid_len = msg.ssid[1];
 797         }
 798
 799         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 800                 wpabuf_free(dev->info.p2ps_instance);
 801                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 802                         msg.adv_service_instance, msg.adv_service_instance_len);
 803         }
 804
 805         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 806             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 807                 int ds_freq;
 808                 if (*msg.ds_params == 14)
 809                         ds_freq = 2484;
 810                 else
 811                         ds_freq = 2407 + *msg.ds_params * 5;
 812                 if (freq != ds_freq) {
 813                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 814                                 freq, ds_freq);
 815                         freq = ds_freq;
 816                 }
 817         }
 818
 819         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 820                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 821                         MACSTR " %d -> %d MHz (DS param %d)",
 822                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 823                         freq, msg.ds_params ? *msg.ds_params : -1);
 824         }
 825         if (scan_res) {
 826                 dev->listen_freq = freq;
 827                 if (msg.group_info)
 828                         dev->oper_freq = freq;
 829         }
 830         dev->info.level = level;
 831
 832         p2p_copy_wps_info(p2p, dev, 0, &msg);
 833
 834         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 835                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 836                 dev->info.wps_vendor_ext[i] = NULL;
 837         }
 838
 839         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 840                 if (msg.wps_vendor_ext[i] == NULL)
 841                         break;
 842                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 843                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 844                 if (dev->info.wps_vendor_ext[i] == NULL)
 845                         break;
 846         }
 847
 848         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 849
 850         if (msg.wfd_subelems) {
 851                 wpabuf_free(dev->info.wfd_subelems);
 852                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 853         }
 854
 855         if (scan_res) {
 856                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 857                                       msg.group_info, msg.group_info_len,
 858                                       rx_time);
 859         }
 860
 861         p2p_parse_free(&msg);
 862
 863         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 864
 865         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 866             (!msg.adv_service_instance ||
 867              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 868                 return 0;
 869
 870         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 871                 freq, (unsigned int) rx_time->sec,
 872                 (unsigned int) rx_time->usec);
 873         if (dev->flags & P2P_DEV_USER_REJECTED) {
 874                 p2p_dbg(p2p, "Do not report rejected device");
 875                 return 0;
 876         }
 877
 878         if (dev->info.config_methods == 0 &&
 879             (freq == 2412 || freq == 2437 || freq == 2462)) {
 880                 /*
 881                  * If we have only seen a Beacon frame from a GO, we do not yet
 882                  * know what WPS config methods it supports. Since some
 883                  * applications use config_methods value from P2P-DEVICE-FOUND
 884                  * events, postpone reporting this peer until we've fully
 885                  * discovered its capabilities.
 886                  *
 887                  * At least for now, do this only if the peer was detected on
 888                  * one of the social channels since that peer can be easily be
 889                  * found again and there are no limitations of having to use
 890                  * passive scan on this channels, so this can be done through
 891                  * Probe Response frame that includes the config_methods
 892                  * information.
 893                  */
 894                 p2p_dbg(p2p, "Do not report peer " MACSTR
 895                         " with unknown config methods", MAC2STR(addr));
 896                 return 0;
 897         }
 898
 899         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 900                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 901         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 902
 903         if (msg.adv_service_instance)
 904                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 905
 906         return 0;
 907 }
 908
 909
 910 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 911 {
 912         int i;
 913
 914         if (p2p->go_neg_peer == dev) {
 915                 /*
 916                  * If GO Negotiation is in progress, report that it has failed.
 917                  */
 918                 p2p_go_neg_failed(p2p, -1);
 919         }
 920         if (p2p->invite_peer == dev)
 921                 p2p->invite_peer = NULL;
 922         if (p2p->sd_peer == dev)
 923                 p2p->sd_peer = NULL;
 924         if (p2p->pending_client_disc_go == dev)
 925                 p2p->pending_client_disc_go = NULL;
 926
 927         /* dev_lost() device, but only if it was previously dev_found() */
 928         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 929                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 930                                    dev->info.p2p_device_addr);
 931
 932         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 933                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 934                 dev->info.wps_vendor_ext[i] = NULL;
 935         }
 936
 937         wpabuf_free(dev->info.wfd_subelems);
 938         wpabuf_free(dev->info.vendor_elems);
 939         wpabuf_free(dev->go_neg_conf);
 940         wpabuf_free(dev->info.p2ps_instance);
 941
 942         os_free(dev);
 943 }
 944
 945
 946 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 947 {
 948         struct p2p_channels *c;
 949         struct p2p_reg_class *cla;
 950         size_t cl, ch;
 951         int found = 0;
 952         u8 reg_class;
 953         u8 channel;
 954         int freq;
 955
 956         c = &p2p->cfg->channels;
 957         for (cl = 0; cl < c->reg_classes; cl++) {
 958                 cla = &c->reg_class[cl];
 959                 if (cla->reg_class != p2p->last_prog_scan_class)
 960                         continue;
 961                 for (ch = 0; ch < cla->channels; ch++) {
 962                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 963                                 found = 1;
 964                                 break;
 965                         }
 966                 }
 967                 if (found)
 968                         break;
 969         }
 970
 971         if (!found) {
 972                 /* Start from beginning */
 973                 reg_class = c->reg_class[0].reg_class;
 974                 channel = c->reg_class[0].channel[0];
 975         } else {
 976                 /* Pick the next channel */
 977                 ch++;
 978                 if (ch == cla->channels) {
 979                         cl++;
 980                         if (cl == c->reg_classes)
 981                                 cl = 0;
 982                         ch = 0;
 983                 }
 984                 reg_class = c->reg_class[cl].reg_class;
 985                 channel = c->reg_class[cl].channel[ch];
 986         }
 987
 988         freq = p2p_channel_to_freq(reg_class, channel);
 989         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 990                 reg_class, channel, freq);
 991         p2p->last_prog_scan_class = reg_class;
 992         p2p->last_prog_scan_chan = channel;
 993
 994         if (freq == 2412 || freq == 2437 || freq == 2462)
 995                 return 0; /* No need to add social channels */
 996         return freq;
 997 }
 998
 999
1000 static void p2p_search(struct p2p_data *p2p)
1001 {
1002         int freq = 0;
1003         enum p2p_scan_type type;
1004         u16 pw_id = DEV_PW_DEFAULT;
1005         int res;
1006
1007         if (p2p->drv_in_listen) {
1008                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1009                 return;
1010         }
1011         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1012
1013         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1014             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1015                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1016                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1017         } else {
1018                 type = P2P_SCAN_SOCIAL;
1019                 p2p_dbg(p2p, "Starting search");
1020         }
1021
1022         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1023                                  p2p->num_req_dev_types, p2p->req_dev_types,
1024                                  p2p->find_dev_id, pw_id);
1025         if (res < 0) {
1026                 p2p_dbg(p2p, "Scan request schedule failed");
1027                 p2p_continue_find(p2p);
1028         }
1029 }
1030
1031
1032 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1033 {
1034         struct p2p_data *p2p = eloop_ctx;
1035         p2p_dbg(p2p, "Find timeout -> stop");
1036         p2p_stop_find(p2p);
1037 }
1038
1039
1040 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1041 {
1042         if (status != 0) {
1043                 p2p_dbg(p2p, "Scan request failed");
1044                 /* Do continue find even for the first p2p_find_scan */
1045                 p2p_continue_find(p2p);
1046         } else {
1047                 p2p_dbg(p2p, "Running p2p_scan");
1048                 p2p->p2p_scan_running = 1;
1049                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1050                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1051                                        p2p, NULL);
1052         }
1053 }
1054
1055
1056 static int p2p_run_after_scan(struct p2p_data *p2p)
1057 {
1058         struct p2p_device *dev;
1059         enum p2p_after_scan op;
1060
1061         if (p2p->after_scan_tx) {
1062                 p2p->after_scan_tx_in_progress = 1;
1063                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1064                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1065                                       p2p->after_scan_tx->freq,
1066                                       p2p->after_scan_tx->dst,
1067                                       p2p->after_scan_tx->src,
1068                                       p2p->after_scan_tx->bssid,
1069                                       (u8 *) (p2p->after_scan_tx + 1),
1070                                       p2p->after_scan_tx->len,
1071                                       p2p->after_scan_tx->wait_time);
1072                 os_free(p2p->after_scan_tx);
1073                 p2p->after_scan_tx = NULL;
1074                 return 1;
1075         }
1076
1077         op = p2p->start_after_scan;
1078         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1079         switch (op) {
1080         case P2P_AFTER_SCAN_NOTHING:
1081                 break;
1082         case P2P_AFTER_SCAN_LISTEN:
1083                 p2p_dbg(p2p, "Start previously requested Listen state");
1084                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1085                            p2p->pending_listen_usec / 1000);
1086                 return 1;
1087         case P2P_AFTER_SCAN_CONNECT:
1088                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1089                         MAC2STR(p2p->after_scan_peer));
1090                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1091                 if (dev == NULL) {
1092                         p2p_dbg(p2p, "Peer not known anymore");
1093                         break;
1094                 }
1095                 p2p_connect_send(p2p, dev);
1096                 return 1;
1097         }
1098
1099         return 0;
1100 }
1101
1102
1103 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1104 {
1105         struct p2p_data *p2p = eloop_ctx;
1106         int running;
1107         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1108         running = p2p->p2p_scan_running;
1109         /* Make sure we recover from missed scan results callback */
1110         p2p->p2p_scan_running = 0;
1111
1112         if (running)
1113                 p2p_run_after_scan(p2p);
1114 }
1115
1116
1117 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1118 {
1119         p2p->num_req_dev_types = 0;
1120         os_free(p2p->req_dev_types);
1121         p2p->req_dev_types = NULL;
1122 }
1123
1124
1125 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1126 {
1127         u8 buf[SHA256_MAC_LEN];
1128         char str_buf[256];
1129         const u8 *adv_array;
1130         size_t i, adv_len;
1131
1132         if (!str || !hash)
1133                 return 0;
1134
1135         if (!str[0]) {
1136                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1137                 return 1;
1138         }
1139
1140         adv_array = (u8 *) str_buf;
1141         adv_len = os_strlen(str);
1142         if (adv_len >= sizeof(str_buf))
1143                 return 0;
1144
1145         for (i = 0; str[i] && i < adv_len; i++) {
1146                 if (str[i] >= 'A' && str[i] <= 'Z')
1147                         str_buf[i] = str[i] - 'A' + 'a';
1148                 else
1149                         str_buf[i] = str[i];
1150         }
1151
1152         if (sha256_vector(1, &adv_array, &adv_len, buf))
1153                 return 0;
1154
1155         os_memcpy(hash, buf, P2PS_HASH_LEN);
1156         return 1;
1157 }
1158
1159
1160 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1161              enum p2p_discovery_type type,
1162              unsigned int num_req_dev_types, const u8 *req_dev_types,
1163              const u8 *dev_id, unsigned int search_delay,
1164              u8 seek_count, const char **seek, int freq)
1165 {
1166         int res;
1167
1168         p2p_dbg(p2p, "Starting find (type=%d)", type);
1169         os_get_reltime(&p2p->find_start);
1170         if (p2p->p2p_scan_running) {
1171                 p2p_dbg(p2p, "p2p_scan is already running");
1172         }
1173
1174         p2p_free_req_dev_types(p2p);
1175         if (req_dev_types && num_req_dev_types) {
1176                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1177                                                WPS_DEV_TYPE_LEN);
1178                 if (p2p->req_dev_types == NULL)
1179                         return -1;
1180                 os_memcpy(p2p->req_dev_types, req_dev_types,
1181                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1182                 p2p->num_req_dev_types = num_req_dev_types;
1183         }
1184
1185         if (dev_id) {
1186                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1187                 p2p->find_dev_id = p2p->find_dev_id_buf;
1188         } else
1189                 p2p->find_dev_id = NULL;
1190
1191         if (seek_count == 0 || !seek) {
1192                 /* Not an ASP search */
1193                 p2p->p2ps_seek = 0;
1194         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1195                 /*
1196                  * An empty seek string means no hash values, but still an ASP
1197                  * search.
1198                  */
1199                 p2p_dbg(p2p, "ASP search");
1200                 p2p->p2ps_seek_count = 0;
1201                 p2p->p2ps_seek = 1;
1202         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1203                 u8 buf[P2PS_HASH_LEN];
1204                 int i, count = 0;
1205
1206                 for (i = 0; i < seek_count; i++) {
1207                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1208                                 continue;
1209
1210                         p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1211                                 seek[i], MAC2STR(buf));
1212                         os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1213                                   buf, P2PS_HASH_LEN);
1214                         count++;
1215                 }
1216
1217                 p2p->p2ps_seek_count = count;
1218                 p2p->p2ps_seek = 1;
1219         } else {
1220                 p2p->p2ps_seek_count = 0;
1221                 p2p->p2ps_seek = 1;
1222         }
1223
1224         /* Special case to perform wildcard search */
1225         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1226                 p2p->p2ps_seek_count = 1;
1227                 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1228                           P2PS_HASH_LEN);
1229         }
1230
1231         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1232         p2p_clear_timeout(p2p);
1233         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1234         p2p->find_type = type;
1235         p2p_device_clear_reported(p2p);
1236         p2p_set_state(p2p, P2P_SEARCH);
1237         p2p->search_delay = search_delay;
1238         p2p->in_search_delay = 0;
1239         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1240         p2p->last_p2p_find_timeout = timeout;
1241         if (timeout)
1242                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1243                                        p2p, NULL);
1244         switch (type) {
1245         case P2P_FIND_START_WITH_FULL:
1246                 if (freq > 0) {
1247                         /*
1248                          * Start with the specified channel and then move to
1249                          * social channels only scans.
1250                          */
1251                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1252                                                  P2P_SCAN_SPECIFIC, freq,
1253                                                  p2p->num_req_dev_types,
1254                                                  p2p->req_dev_types, dev_id,
1255                                                  DEV_PW_DEFAULT);
1256                         break;
1257                 }
1258                 /* fall through */
1259         case P2P_FIND_PROGRESSIVE:
1260                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1261                                          p2p->num_req_dev_types,
1262                                          p2p->req_dev_types, dev_id,
1263                                          DEV_PW_DEFAULT);
1264                 break;
1265         case P2P_FIND_ONLY_SOCIAL:
1266                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1267                                          p2p->num_req_dev_types,
1268                                          p2p->req_dev_types, dev_id,
1269                                          DEV_PW_DEFAULT);
1270                 break;
1271         default:
1272                 return -1;
1273         }
1274
1275         if (res != 0 && p2p->p2p_scan_running) {
1276                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1277                 /* wait for the previous p2p_scan to complete */
1278                 res = 0; /* do not report failure */
1279         } else if (res != 0) {
1280                 p2p_dbg(p2p, "Failed to start p2p_scan");
1281                 p2p_set_state(p2p, P2P_IDLE);
1282                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1283         }
1284
1285         return res;
1286 }
1287
1288
1289 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1290 {
1291         p2p_dbg(p2p, "Stopping find");
1292         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1293         p2p_clear_timeout(p2p);
1294         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1295                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1296
1297         p2p->p2ps_seek_count = 0;
1298
1299         p2p_set_state(p2p, P2P_IDLE);
1300         p2p_free_req_dev_types(p2p);
1301         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1302         if (p2p->go_neg_peer)
1303                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1304         p2p->go_neg_peer = NULL;
1305         p2p->sd_peer = NULL;
1306         p2p->invite_peer = NULL;
1307         p2p_stop_listen_for_freq(p2p, freq);
1308         p2p->send_action_in_progress = 0;
1309 }
1310
1311
1312 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1313 {
1314         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1315                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1316                 return;
1317         }
1318         if (p2p->in_listen) {
1319                 p2p->in_listen = 0;
1320                 p2p_clear_timeout(p2p);
1321         }
1322         if (p2p->drv_in_listen) {
1323                 /*
1324                  * The driver may not deliver callback to p2p_listen_end()
1325                  * when the operation gets canceled, so clear the internal
1326                  * variable that is tracking driver state.
1327                  */
1328                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1329                 p2p->drv_in_listen = 0;
1330         }
1331         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1332 }
1333
1334
1335 void p2p_stop_listen(struct p2p_data *p2p)
1336 {
1337         if (p2p->state != P2P_LISTEN_ONLY) {
1338                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1339                 return;
1340         }
1341
1342         p2p_stop_listen_for_freq(p2p, 0);
1343         p2p_set_state(p2p, P2P_IDLE);
1344 }
1345
1346
1347 void p2p_stop_find(struct p2p_data *p2p)
1348 {
1349         p2p->pending_listen_freq = 0;
1350         p2p_stop_find_for_freq(p2p, 0);
1351 }
1352
1353
1354 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1355                                     unsigned int force_freq,
1356                                     unsigned int pref_freq, int go)
1357 {
1358         u8 op_class, op_channel;
1359         unsigned int freq = force_freq ? force_freq : pref_freq;
1360
1361         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1362                 force_freq, pref_freq, go);
1363         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1364                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1365                 return -1;
1366         }
1367
1368         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1369             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1370                                           op_channel))) {
1371                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1372                         freq, op_class, op_channel);
1373                 return -1;
1374         }
1375
1376         p2p->op_reg_class = op_class;
1377         p2p->op_channel = op_channel;
1378
1379         if (force_freq) {
1380                 p2p->channels.reg_classes = 1;
1381                 p2p->channels.reg_class[0].channels = 1;
1382                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1383                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1384         } else {
1385                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1386                           sizeof(struct p2p_channels));
1387         }
1388
1389         return 0;
1390 }
1391
1392
1393 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1394 {
1395         u8 op_class, op_channel;
1396         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1397         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1398         const int op_classes_vht[] = { 128, 0 };
1399
1400         p2p_dbg(p2p, "Prepare channel best");
1401
1402         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1403             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1404             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1405             == 0) {
1406                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1407                 p2p->op_reg_class = op_class;
1408                 p2p->op_channel = op_channel;
1409         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1410                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1411                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1412                    == 0) {
1413                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1414                 p2p->op_reg_class = op_class;
1415                 p2p->op_channel = op_channel;
1416         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1417                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1418                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1419                                        &op_channel) == 0) {
1420                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1421                 p2p->op_reg_class = op_class;
1422                 p2p->op_channel = op_channel;
1423         } else if (p2p->cfg->num_pref_chan > 0 &&
1424                    p2p_channels_includes(&p2p->cfg->channels,
1425                                          p2p->cfg->pref_chan[0].op_class,
1426                                          p2p->cfg->pref_chan[0].chan)) {
1427                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1428                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1429                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1430         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1431                                       &p2p->op_reg_class, &p2p->op_channel) ==
1432                    0) {
1433                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1434                         p2p->op_reg_class, p2p->op_channel);
1435         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1436                                       &p2p->op_reg_class, &p2p->op_channel) ==
1437                    0) {
1438                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1439                         p2p->op_reg_class, p2p->op_channel);
1440         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1441                                       &p2p->op_reg_class, &p2p->op_channel) ==
1442                    0) {
1443                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1444                         p2p->op_reg_class, p2p->op_channel);
1445         } else if (p2p_channels_includes(&p2p->cfg->channels,
1446                                          p2p->cfg->op_reg_class,
1447                                          p2p->cfg->op_channel)) {
1448                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1449                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1450                 p2p->op_channel = p2p->cfg->op_channel;
1451         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1452                                              &p2p->op_reg_class,
1453                                              &p2p->op_channel) == 0) {
1454                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1455                         p2p->op_reg_class, p2p->op_channel);
1456         } else {
1457                 /* Select any random available channel from the first available
1458                  * operating class */
1459                 p2p_channel_select(&p2p->cfg->channels, NULL,
1460                                    &p2p->op_reg_class,
1461                                    &p2p->op_channel);
1462                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1463                         p2p->op_channel, p2p->op_reg_class);
1464         }
1465
1466         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1467                   sizeof(struct p2p_channels));
1468 }
1469
1470
1471 /**
1472  * p2p_prepare_channel - Select operating channel for GO Negotiation
1473  * @p2p: P2P module context from p2p_init()
1474  * @dev: Selected peer device
1475  * @force_freq: Forced frequency in MHz or 0 if not forced
1476  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1477  * @go: Whether the local end will be forced to be GO
1478  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1479  *
1480  * This function is used to do initial operating channel selection for GO
1481  * Negotiation prior to having received peer information. The selected channel
1482  * may be further optimized in p2p_reselect_channel() once the peer information
1483  * is available.
1484  */
1485 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1486                         unsigned int force_freq, unsigned int pref_freq, int go)
1487 {
1488         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1489                 force_freq, pref_freq, go);
1490         if (force_freq || pref_freq) {
1491                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1492                     0)
1493                         return -1;
1494         } else {
1495                 p2p_prepare_channel_best(p2p);
1496         }
1497         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1498         if (go)
1499                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1500         else if (!force_freq)
1501                 p2p_channels_union_inplace(&p2p->channels,
1502                                            &p2p->cfg->cli_channels);
1503         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1504
1505         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1506                 p2p->op_reg_class, p2p->op_channel,
1507                 force_freq ? " (forced)" : "");
1508
1509         if (force_freq)
1510                 dev->flags |= P2P_DEV_FORCE_FREQ;
1511         else
1512                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1513
1514         return 0;
1515 }
1516
1517
1518 static void p2p_set_dev_persistent(struct p2p_device *dev,
1519                                    int persistent_group)
1520 {
1521         switch (persistent_group) {
1522         case 0:
1523                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1524                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1525                 break;
1526         case 1:
1527                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1528                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1529                 break;
1530         case 2:
1531                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1532                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1533                 break;
1534         }
1535 }
1536
1537
1538 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1539                 enum p2p_wps_method wps_method,
1540                 int go_intent, const u8 *own_interface_addr,
1541                 unsigned int force_freq, int persistent_group,
1542                 const u8 *force_ssid, size_t force_ssid_len,
1543                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1544 {
1545         struct p2p_device *dev;
1546
1547         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1548                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1549                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1550                 "oob_pw_id=%u",
1551                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1552                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1553
1554         dev = p2p_get_device(p2p, peer_addr);
1555         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1556                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1557                         MAC2STR(peer_addr));
1558                 return -1;
1559         }
1560
1561         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1562                                 go_intent == 15) < 0)
1563                 return -1;
1564
1565         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1566                 if (!(dev->info.dev_capab &
1567                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1568                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1569                                 " that is in a group and is not discoverable",
1570                                 MAC2STR(peer_addr));
1571                         return -1;
1572                 }
1573                 if (dev->oper_freq <= 0) {
1574                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1575                                 " with incomplete information",
1576                                 MAC2STR(peer_addr));
1577                         return -1;
1578                 }
1579
1580                 /*
1581                  * First, try to connect directly. If the peer does not
1582                  * acknowledge frames, assume it is sleeping and use device
1583                  * discoverability via the GO at that point.
1584                  */
1585         }
1586
1587         p2p->ssid_set = 0;
1588         if (force_ssid) {
1589                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1590                                   force_ssid, force_ssid_len);
1591                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1592                 p2p->ssid_len = force_ssid_len;
1593                 p2p->ssid_set = 1;
1594         }
1595
1596         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1597         dev->flags &= ~P2P_DEV_USER_REJECTED;
1598         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1599         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1600         if (pd_before_go_neg)
1601                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1602         else {
1603                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1604                 /*
1605                  * Assign dialog token and tie breaker here to use the same
1606                  * values in each retry within the same GO Negotiation exchange.
1607                  */
1608                 dev->dialog_token++;
1609                 if (dev->dialog_token == 0)
1610                         dev->dialog_token = 1;
1611                 dev->tie_breaker = p2p->next_tie_breaker;
1612                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1613         }
1614         dev->connect_reqs = 0;
1615         dev->go_neg_req_sent = 0;
1616         dev->go_state = UNKNOWN_GO;
1617         p2p_set_dev_persistent(dev, persistent_group);
1618         p2p->go_intent = go_intent;
1619         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1620
1621         if (p2p->state != P2P_IDLE)
1622                 p2p_stop_find(p2p);
1623
1624         if (p2p->after_scan_tx) {
1625                 /*
1626                  * We need to drop the pending frame to avoid issues with the
1627                  * new GO Negotiation, e.g., when the pending frame was from a
1628                  * previous attempt at starting a GO Negotiation.
1629                  */
1630                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1631                 os_free(p2p->after_scan_tx);
1632                 p2p->after_scan_tx = NULL;
1633         }
1634
1635         dev->wps_method = wps_method;
1636         dev->oob_pw_id = oob_pw_id;
1637         dev->status = P2P_SC_SUCCESS;
1638
1639         if (p2p->p2p_scan_running) {
1640                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1641                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1642                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1643                 return 0;
1644         }
1645         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1646
1647         return p2p_connect_send(p2p, dev);
1648 }
1649
1650
1651 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1652                   enum p2p_wps_method wps_method,
1653                   int go_intent, const u8 *own_interface_addr,
1654                   unsigned int force_freq, int persistent_group,
1655                   const u8 *force_ssid, size_t force_ssid_len,
1656                   unsigned int pref_freq, u16 oob_pw_id)
1657 {
1658         struct p2p_device *dev;
1659
1660         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1661                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1662                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1663                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1664                 wps_method, persistent_group, oob_pw_id);
1665
1666         dev = p2p_get_device(p2p, peer_addr);
1667         if (dev == NULL) {
1668                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1669                         MAC2STR(peer_addr));
1670                 return -1;
1671         }
1672
1673         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1674                                 15) < 0)
1675                 return -1;
1676
1677         p2p->ssid_set = 0;
1678         if (force_ssid) {
1679                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1680                                   force_ssid, force_ssid_len);
1681                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1682                 p2p->ssid_len = force_ssid_len;
1683                 p2p->ssid_set = 1;
1684         }
1685
1686         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1687         dev->flags &= ~P2P_DEV_USER_REJECTED;
1688         dev->go_neg_req_sent = 0;
1689         dev->go_state = UNKNOWN_GO;
1690         p2p_set_dev_persistent(dev, persistent_group);
1691         p2p->go_intent = go_intent;
1692         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1693
1694         dev->wps_method = wps_method;
1695         dev->oob_pw_id = oob_pw_id;
1696         dev->status = P2P_SC_SUCCESS;
1697
1698         return 0;
1699 }
1700
1701
1702 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1703                       struct p2p_device *dev, struct p2p_message *msg)
1704 {
1705         os_get_reltime(&dev->last_seen);
1706
1707         p2p_copy_wps_info(p2p, dev, 0, msg);
1708
1709         if (msg->listen_channel) {
1710                 int freq;
1711                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1712                                            msg->listen_channel[4]);
1713                 if (freq < 0) {
1714                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1715                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1716                                 msg->listen_channel[0],
1717                                 msg->listen_channel[1],
1718                                 msg->listen_channel[2],
1719                                 msg->listen_channel[3],
1720                                 msg->listen_channel[4]);
1721                 } else {
1722                         p2p_dbg(p2p, "Update peer " MACSTR
1723                                 " Listen channel: %u -> %u MHz",
1724                                 MAC2STR(dev->info.p2p_device_addr),
1725                                 dev->listen_freq, freq);
1726                         dev->listen_freq = freq;
1727                 }
1728         }
1729
1730         if (msg->wfd_subelems) {
1731                 wpabuf_free(dev->info.wfd_subelems);
1732                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1733         }
1734
1735         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1736                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1737                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1738         } else {
1739                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1740                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1741                         "listen_freq=%d",
1742                         MAC2STR(dev->info.p2p_device_addr),
1743                         dev->info.dev_capab, dev->info.group_capab,
1744                         dev->info.device_name, dev->listen_freq);
1745         }
1746
1747         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1748
1749         if (dev->flags & P2P_DEV_USER_REJECTED) {
1750                 p2p_dbg(p2p, "Do not report rejected device");
1751                 return;
1752         }
1753
1754         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1755                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1756         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1757 }
1758
1759
1760 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1761 {
1762         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1763         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1764         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1765                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1766         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1767 }
1768
1769
1770 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1771 {
1772         if (p2p->ssid_set) {
1773                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1774                 params->ssid_len = p2p->ssid_len;
1775         } else {
1776                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1777         }
1778         p2p->ssid_set = 0;
1779
1780         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1781         return 0;
1782 }
1783
1784
1785 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1786 {
1787         struct p2p_go_neg_results res;
1788         int go = peer->go_state == LOCAL_GO;
1789         struct p2p_channels intersection;
1790
1791         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1792                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1793
1794         os_memset(&res, 0, sizeof(res));
1795         res.role_go = go;
1796         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1797         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1798         res.wps_method = peer->wps_method;
1799         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1800                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1801                         res.persistent_group = 2;
1802                 else
1803                         res.persistent_group = 1;
1804         }
1805
1806         if (go) {
1807                 /* Setup AP mode for WPS provisioning */
1808                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1809                                                p2p->op_channel);
1810                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1811                 res.ssid_len = p2p->ssid_len;
1812                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1813         } else {
1814                 res.freq = peer->oper_freq;
1815                 if (p2p->ssid_len) {
1816                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1817                         res.ssid_len = p2p->ssid_len;
1818                 }
1819         }
1820
1821         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1822         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1823         p2p_channels_intersect(&p2p->channels, &peer->channels,
1824                                &intersection);
1825         if (go) {
1826                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1827                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1828                                   &intersection);
1829         }
1830
1831         p2p_channels_to_freqs(&intersection, res.freq_list,
1832                               P2P_MAX_CHANNELS);
1833
1834         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1835
1836         p2p_clear_timeout(p2p);
1837         p2p->ssid_set = 0;
1838         peer->go_neg_req_sent = 0;
1839         peer->wps_method = WPS_NOT_READY;
1840         peer->oob_pw_id = 0;
1841         wpabuf_free(peer->go_neg_conf);
1842         peer->go_neg_conf = NULL;
1843
1844         p2p_set_state(p2p, P2P_PROVISIONING);
1845         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1846 }
1847
1848
1849 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1850                               const u8 *data, size_t len, int rx_freq)
1851 {
1852         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1853         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1854
1855         if (len < 1)
1856                 return;
1857
1858         switch (data[0]) {
1859         case P2P_GO_NEG_REQ:
1860                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1861                 break;
1862         case P2P_GO_NEG_RESP:
1863                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1864                 break;
1865         case P2P_GO_NEG_CONF:
1866                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1867                 break;
1868         case P2P_INVITATION_REQ:
1869                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1870                                            rx_freq);
1871                 break;
1872         case P2P_INVITATION_RESP:
1873                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1874                 break;
1875         case P2P_PROV_DISC_REQ:
1876                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1877                 break;
1878         case P2P_PROV_DISC_RESP:
1879                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1880                 break;
1881         case P2P_DEV_DISC_REQ:
1882                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1883                 break;
1884         case P2P_DEV_DISC_RESP:
1885                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1886                 break;
1887         default:
1888                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1889                         data[0]);
1890                 break;
1891         }
1892 }
1893
1894
1895 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1896                                  const u8 *sa, const u8 *bssid, const u8 *data,
1897                                  size_t len, int freq)
1898 {
1899         if (len < 1)
1900                 return;
1901
1902         switch (data[0]) {
1903         case WLAN_PA_VENDOR_SPECIFIC:
1904                 data++;
1905                 len--;
1906                 if (len < 4)
1907                         return;
1908                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1909                         return;
1910
1911                 data += 4;
1912                 len -= 4;
1913
1914                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1915                 break;
1916         case WLAN_PA_GAS_INITIAL_REQ:
1917                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1918                 break;
1919         case WLAN_PA_GAS_INITIAL_RESP:
1920                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1921                 break;
1922         case WLAN_PA_GAS_COMEBACK_REQ:
1923                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1924                 break;
1925         case WLAN_PA_GAS_COMEBACK_RESP:
1926                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1927                 break;
1928         }
1929 }
1930
1931
1932 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1933                    const u8 *bssid, u8 category,
1934                    const u8 *data, size_t len, int freq)
1935 {
1936         if (category == WLAN_ACTION_PUBLIC) {
1937                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1938                 return;
1939         }
1940
1941         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1942                 return;
1943
1944         if (len < 4)
1945                 return;
1946
1947         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1948                 return;
1949         data += 4;
1950         len -= 4;
1951
1952         /* P2P action frame */
1953         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1954         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1955
1956         if (len < 1)
1957                 return;
1958         switch (data[0]) {
1959         case P2P_NOA:
1960                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1961                 /* TODO */
1962                 break;
1963         case P2P_PRESENCE_REQ:
1964                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1965                 break;
1966         case P2P_PRESENCE_RESP:
1967                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1968                 break;
1969         case P2P_GO_DISC_REQ:
1970                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1971                 break;
1972         default:
1973                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1974                 break;
1975         }
1976 }
1977
1978
1979 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1980 {
1981         struct p2p_data *p2p = eloop_ctx;
1982         if (p2p->go_neg_peer == NULL)
1983                 return;
1984         if (p2p->pending_listen_freq) {
1985                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1986                 p2p->pending_listen_freq = 0;
1987         }
1988         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1989         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1990         /*
1991          * Set new timeout to make sure a previously set one does not expire
1992          * too quickly while waiting for the GO Negotiation to complete.
1993          */
1994         p2p_set_timeout(p2p, 0, 500000);
1995         p2p_connect_send(p2p, p2p->go_neg_peer);
1996 }
1997
1998
1999 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
2000 {
2001         struct p2p_data *p2p = eloop_ctx;
2002         if (p2p->invite_peer == NULL)
2003                 return;
2004         if (p2p->pending_listen_freq) {
2005                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2006                 p2p->pending_listen_freq = 0;
2007         }
2008         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2009         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2010                         p2p->invite_dev_pw_id);
2011 }
2012
2013
2014 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2015                                        const u8 *ie, size_t ie_len)
2016 {
2017         struct p2p_message msg;
2018         struct p2p_device *dev;
2019
2020         os_memset(&msg, 0, sizeof(msg));
2021         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2022         {
2023                 p2p_parse_free(&msg);
2024                 return; /* not a P2P probe */
2025         }
2026
2027         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2028             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2029             != 0) {
2030                 /* The Probe Request is not part of P2P Device Discovery. It is
2031                  * not known whether the source address of the frame is the P2P
2032                  * Device Address or P2P Interface Address. Do not add a new
2033                  * peer entry based on this frames.
2034                  */
2035                 p2p_parse_free(&msg);
2036                 return;
2037         }
2038
2039         dev = p2p_get_device(p2p, addr);
2040         if (dev) {
2041                 if (dev->country[0] == 0 && msg.listen_channel)
2042                         os_memcpy(dev->country, msg.listen_channel, 3);
2043                 os_get_reltime(&dev->last_seen);
2044                 p2p_parse_free(&msg);
2045                 return; /* already known */
2046         }
2047
2048         dev = p2p_create_device(p2p, addr);
2049         if (dev == NULL) {
2050                 p2p_parse_free(&msg);
2051                 return;
2052         }
2053
2054         os_get_reltime(&dev->last_seen);
2055         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2056
2057         if (msg.listen_channel) {
2058                 os_memcpy(dev->country, msg.listen_channel, 3);
2059                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2060                                                        msg.listen_channel[4]);
2061         }
2062
2063         p2p_copy_wps_info(p2p, dev, 1, &msg);
2064
2065         if (msg.wfd_subelems) {
2066                 wpabuf_free(dev->info.wfd_subelems);
2067                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2068         }
2069
2070         p2p_parse_free(&msg);
2071
2072         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2073                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2074                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2075                 dev->info.group_capab, dev->info.device_name,
2076                 dev->listen_freq);
2077 }
2078
2079
2080 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2081                                                 const u8 *addr,
2082                                                 struct p2p_message *msg)
2083 {
2084         struct p2p_device *dev;
2085
2086         dev = p2p_get_device(p2p, addr);
2087         if (dev) {
2088                 os_get_reltime(&dev->last_seen);
2089                 return dev; /* already known */
2090         }
2091
2092         dev = p2p_create_device(p2p, addr);
2093         if (dev == NULL)
2094                 return NULL;
2095
2096         p2p_add_dev_info(p2p, addr, dev, msg);
2097
2098         return dev;
2099 }
2100
2101
2102 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2103 {
2104         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2105                 return 1;
2106         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2107             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2108             WPA_GET_BE16(&req_dev_type[6]) == 0)
2109                 return 1; /* Category match with wildcard OUI/sub-category */
2110         return 0;
2111 }
2112
2113
2114 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2115                         size_t num_req_dev_type)
2116 {
2117         size_t i;
2118         for (i = 0; i < num_req_dev_type; i++) {
2119                 if (dev_type_match(dev_type, req_dev_type[i]))
2120                         return 1;
2121         }
2122         return 0;
2123 }
2124
2125
2126 /**
2127  * p2p_match_dev_type - Match local device type with requested type
2128  * @p2p: P2P module context from p2p_init()
2129  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2130  * Returns: 1 on match, 0 on mismatch
2131  *
2132  * This function can be used to match the Requested Device Type attribute in
2133  * WPS IE with the local device types for deciding whether to reply to a Probe
2134  * Request frame.
2135  */
2136 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2137 {
2138         struct wps_parse_attr attr;
2139         size_t i;
2140
2141         if (wps_parse_msg(wps, &attr))
2142                 return 1; /* assume no Requested Device Type attributes */
2143
2144         if (attr.num_req_dev_type == 0)
2145                 return 1; /* no Requested Device Type attributes -> match */
2146
2147         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2148                                 attr.num_req_dev_type))
2149                 return 1; /* Own Primary Device Type matches */
2150
2151         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2152                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2153                                         attr.req_dev_type,
2154                                         attr.num_req_dev_type))
2155                         return 1; /* Own Secondary Device Type matches */
2156         }
2157
2158         /* No matching device type found */
2159         return 0;
2160 }
2161
2162
2163 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2164                                          const u8 *query_hash,
2165                                          u8 query_count)
2166 {
2167         struct wpabuf *buf;
2168         u8 *len;
2169         int pw_id = -1;
2170         size_t extra = 0;
2171
2172 #ifdef CONFIG_WIFI_DISPLAY
2173         if (p2p->wfd_ie_probe_resp)
2174                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2175 #endif /* CONFIG_WIFI_DISPLAY */
2176
2177         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2178                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2179
2180         if (query_count)
2181                 extra += MAX_SVC_ADV_IE_LEN;
2182
2183         buf = wpabuf_alloc(1000 + extra);
2184         if (buf == NULL)
2185                 return NULL;
2186
2187         if (p2p->go_neg_peer) {
2188                 /* Advertise immediate availability of WPS credential */
2189                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2190         }
2191
2192         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2193                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2194                 wpabuf_free(buf);
2195                 return NULL;
2196         }
2197
2198 #ifdef CONFIG_WIFI_DISPLAY
2199         if (p2p->wfd_ie_probe_resp)
2200                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2201 #endif /* CONFIG_WIFI_DISPLAY */
2202
2203         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2204                 wpabuf_put_buf(buf,
2205                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2206
2207         /* P2P IE */
2208         len = p2p_buf_add_ie_hdr(buf);
2209         p2p_buf_add_capability(buf, p2p->dev_capab &
2210                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2211         if (p2p->ext_listen_interval)
2212                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2213                                               p2p->ext_listen_interval);
2214         p2p_buf_add_device_info(buf, p2p, NULL);
2215         p2p_buf_update_ie_hdr(buf, len);
2216
2217         if (query_count) {
2218                 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2219                                              p2p->p2ps_adv_list);
2220         }
2221
2222         return buf;
2223 }
2224
2225
2226 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2227 {
2228         struct p2ps_advertisement *adv_data;
2229         int any_wfa;
2230
2231         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2232
2233         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2234         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2235
2236         adv_data = p2p->p2ps_adv_list;
2237         while (adv_data) {
2238                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2239                         return 1; /* exact hash match */
2240                 if (any_wfa &&
2241                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2242                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2243                         return 1; /* WFA service match */
2244                 adv_data = adv_data->next;
2245         }
2246
2247         return 0;
2248 }
2249
2250
2251 static enum p2p_probe_req_status
2252 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2253                 const u8 *bssid, const u8 *ie, size_t ie_len,
2254                 unsigned int rx_freq)
2255 {
2256         struct ieee802_11_elems elems;
2257         struct wpabuf *buf;
2258         struct ieee80211_mgmt *resp;
2259         struct p2p_message msg;
2260         struct wpabuf *ies;
2261         u8 query_hash[P2P_MAX_QUERY_HASH * P2PS_HASH_LEN];
2262         u8 query_count;
2263         u8 channel, op_class;
2264
2265         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2266             ParseFailed) {
2267                 /* Ignore invalid Probe Request frames */
2268                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2269                 return P2P_PREQ_MALFORMED;
2270         }
2271
2272         if (elems.p2p == NULL) {
2273                 /* not a P2P probe - ignore it */
2274                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2275                 return P2P_PREQ_NOT_P2P;
2276         }
2277
2278         if (dst && !is_broadcast_ether_addr(dst) &&
2279             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2280                 /* Not sent to the broadcast address or our P2P Device Address
2281                  */
2282                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2283                         MAC2STR(dst));
2284                 return P2P_PREQ_NOT_PROCESSED;
2285         }
2286
2287         if (bssid && !is_broadcast_ether_addr(bssid)) {
2288                 /* Not sent to the Wildcard BSSID */
2289                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2290                         MAC2STR(bssid));
2291                 return P2P_PREQ_NOT_PROCESSED;
2292         }
2293
2294         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2295             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2296             0) {
2297                 /* not using P2P Wildcard SSID - ignore */
2298                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2299                 return P2P_PREQ_NOT_PROCESSED;
2300         }
2301
2302         if (supp_rates_11b_only(&elems)) {
2303                 /* Indicates support for 11b rates only */
2304                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2305                 return P2P_PREQ_NOT_P2P;
2306         }
2307
2308         os_memset(&msg, 0, sizeof(msg));
2309         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2310                 /* Could not parse P2P attributes */
2311                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2312                 return P2P_PREQ_NOT_P2P;
2313         }
2314
2315         query_count = 0;
2316         if (msg.service_hash && msg.service_hash_count) {
2317                 const u8 *hash = msg.service_hash;
2318                 u8 *dest = query_hash;
2319                 u8 i;
2320                 int p2ps_svc_found = 0;
2321
2322                 for (i = 0; i < msg.service_hash_count; i++) {
2323                         if (p2p_service_find_asp(p2p, hash)) {
2324                                 p2ps_svc_found = 1;
2325
2326                                 if (!os_memcmp(hash, p2p->wild_card_hash,
2327                                                P2PS_HASH_LEN)) {
2328                                         /* We found match(es) but wildcard
2329                                          * will return all */
2330                                         query_count = 1;
2331                                         os_memcpy(query_hash, hash,
2332                                                   P2PS_HASH_LEN);
2333                                         break;
2334                                 }
2335
2336                                 /* Save each matching hash */
2337                                 if (query_count < P2P_MAX_QUERY_HASH) {
2338                                         os_memcpy(dest, hash, P2PS_HASH_LEN);
2339                                         dest += P2PS_HASH_LEN;
2340                                         query_count++;
2341                                 } else {
2342                                         /* We found match(es) but too many to
2343                                          * return all */
2344                                         query_count = 0;
2345                                         break;
2346                                 }
2347                         }
2348                         hash += P2PS_HASH_LEN;
2349                 }
2350
2351                 p2p_dbg(p2p, "ASP adv found: %d", p2ps_svc_found);
2352
2353                 /* Probed hash unknown */
2354                 if (!p2ps_svc_found) {
2355                         p2p_parse_free(&msg);
2356                         return P2P_PREQ_NOT_PROCESSED;
2357                 }
2358         } else {
2359                 /* This is not a P2PS Probe Request */
2360                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2361
2362                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2363                         /* not in Listen state - ignore Probe Request */
2364                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2365                                 p2p->in_listen, p2p->drv_in_listen);
2366                         p2p_parse_free(&msg);
2367                         return P2P_PREQ_NOT_LISTEN;
2368                 }
2369         }
2370
2371         if (msg.device_id &&
2372             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2373                 /* Device ID did not match */
2374                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2375                         MAC2STR(msg.device_id));
2376                 p2p_parse_free(&msg);
2377                 return P2P_PREQ_NOT_PROCESSED;
2378         }
2379
2380         /* Check Requested Device Type match */
2381         if (msg.wps_attributes &&
2382             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2383                 /* No match with Requested Device Type */
2384                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2385                 p2p_parse_free(&msg);
2386                 return P2P_PREQ_NOT_PROCESSED;
2387         }
2388         p2p_parse_free(&msg);
2389
2390         if (!p2p->cfg->send_probe_resp) {
2391                 /* Response generated elsewhere */
2392                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2393                 return P2P_PREQ_NOT_PROCESSED;
2394         }
2395
2396         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2397
2398         /*
2399          * We do not really have a specific BSS that this frame is advertising,
2400          * so build a frame that has some information in valid format. This is
2401          * really only used for discovery purposes, not to learn exact BSS
2402          * parameters.
2403          */
2404         ies = p2p_build_probe_resp_ies(p2p, query_hash, query_count);
2405         if (ies == NULL)
2406                 return P2P_PREQ_NOT_PROCESSED;
2407
2408         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2409         if (buf == NULL) {
2410                 wpabuf_free(ies);
2411                 return P2P_PREQ_NOT_PROCESSED;
2412         }
2413
2414         resp = NULL;
2415         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2416
2417         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2418                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2419         os_memcpy(resp->da, addr, ETH_ALEN);
2420         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2421         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2422         resp->u.probe_resp.beacon_int = host_to_le16(100);
2423         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2424         resp->u.probe_resp.capab_info =
2425                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2426                              WLAN_CAPABILITY_PRIVACY |
2427                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2428
2429         wpabuf_put_u8(buf, WLAN_EID_SSID);
2430         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2431         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2432
2433         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2434         wpabuf_put_u8(buf, 8);
2435         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2436         wpabuf_put_u8(buf, 90 / 5);
2437         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2438         wpabuf_put_u8(buf, 180 / 5);
2439         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2440         wpabuf_put_u8(buf, 360 / 5);
2441         wpabuf_put_u8(buf, 480 / 5);
2442         wpabuf_put_u8(buf, 540 / 5);
2443
2444         if (!rx_freq) {
2445                 channel = p2p->cfg->channel;
2446         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2447                 wpabuf_free(ies);
2448                 wpabuf_free(buf);
2449                 return P2P_PREQ_NOT_PROCESSED;
2450         }
2451
2452         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2453         wpabuf_put_u8(buf, 1);
2454         wpabuf_put_u8(buf, channel);
2455
2456         wpabuf_put_buf(buf, ies);
2457         wpabuf_free(ies);
2458
2459         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2460
2461         wpabuf_free(buf);
2462
2463         return P2P_PREQ_PROCESSED;
2464 }
2465
2466
2467 enum p2p_probe_req_status
2468 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2469                  const u8 *bssid, const u8 *ie, size_t ie_len,
2470                  unsigned int rx_freq)
2471 {
2472         enum p2p_probe_req_status res;
2473
2474         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2475
2476         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2477         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2478                 return res;
2479
2480         /*
2481          * Activate a pending GO Negotiation/Invite flow if a received Probe
2482          * Request frame is from an expected peer. Some devices may share the
2483          * same address for P2P and non-P2P STA running simultaneously. The
2484          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2485          * return values verified above ensure we are handling a Probe Request
2486          * frame from a P2P peer.
2487          */
2488         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2489             p2p->go_neg_peer &&
2490             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2491             == 0 &&
2492             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2493                 /* Received a Probe Request from GO Negotiation peer */
2494                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2495                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2496                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2497                 return res;
2498         }
2499
2500         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2501             p2p->invite_peer &&
2502             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2503             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2504             == 0) {
2505                 /* Received a Probe Request from Invite peer */
2506                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2507                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2508                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2509                 return res;
2510         }
2511
2512         return res;
2513 }
2514
2515
2516 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2517                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2518 {
2519         struct wpabuf *tmp;
2520         u8 *lpos;
2521         size_t tmplen;
2522         int res;
2523         u8 group_capab;
2524         struct p2p_message msg;
2525
2526         if (p2p_ie == NULL)
2527                 return 0; /* WLAN AP is not a P2P manager */
2528
2529         os_memset(&msg, 0, sizeof(msg));
2530         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2531                 return 0;
2532
2533         p2p_dbg(p2p, "BSS P2P manageability %s",
2534                 msg.manageability ? "enabled" : "disabled");
2535
2536         if (!msg.manageability)
2537                 return 0;
2538
2539         /*
2540          * (Re)Association Request - P2P IE
2541          * P2P Capability attribute (shall be present)
2542          * P2P Interface attribute (present if concurrent device and
2543          *      P2P Management is enabled)
2544          */
2545         tmp = wpabuf_alloc(200);
2546         if (tmp == NULL)
2547                 return -1;
2548
2549         lpos = p2p_buf_add_ie_hdr(tmp);
2550         group_capab = 0;
2551         if (p2p->num_groups > 0) {
2552                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2553                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2554                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2555                     p2p->cross_connect)
2556                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2557         }
2558         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2559         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2560             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2561                 p2p_buf_add_p2p_interface(tmp, p2p);
2562         p2p_buf_update_ie_hdr(tmp, lpos);
2563
2564         tmplen = wpabuf_len(tmp);
2565         if (tmplen > len)
2566                 res = -1;
2567         else {
2568                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2569                 res = tmplen;
2570         }
2571         wpabuf_free(tmp);
2572
2573         return res;
2574 }
2575
2576
2577 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2578                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2579 {
2580         struct wpabuf *tmp;
2581         u8 *lpos;
2582         struct p2p_device *peer;
2583         size_t tmplen;
2584         int res;
2585         size_t extra = 0;
2586
2587         if (!p2p_group)
2588                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2589
2590 #ifdef CONFIG_WIFI_DISPLAY
2591         if (p2p->wfd_ie_assoc_req)
2592                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2593 #endif /* CONFIG_WIFI_DISPLAY */
2594
2595         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2596                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2597
2598         /*
2599          * (Re)Association Request - P2P IE
2600          * P2P Capability attribute (shall be present)
2601          * Extended Listen Timing (may be present)
2602          * P2P Device Info attribute (shall be present)
2603          */
2604         tmp = wpabuf_alloc(200 + extra);
2605         if (tmp == NULL)
2606                 return -1;
2607
2608 #ifdef CONFIG_WIFI_DISPLAY
2609         if (p2p->wfd_ie_assoc_req)
2610                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2611 #endif /* CONFIG_WIFI_DISPLAY */
2612
2613         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2614                 wpabuf_put_buf(tmp,
2615                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2616
2617         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2618
2619         lpos = p2p_buf_add_ie_hdr(tmp);
2620         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2621         if (p2p->ext_listen_interval)
2622                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2623                                               p2p->ext_listen_interval);
2624         p2p_buf_add_device_info(tmp, p2p, peer);
2625         p2p_buf_update_ie_hdr(tmp, lpos);
2626
2627         tmplen = wpabuf_len(tmp);
2628         if (tmplen > len)
2629                 res = -1;
2630         else {
2631                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2632                 res = tmplen;
2633         }
2634         wpabuf_free(tmp);
2635
2636         return res;
2637 }
2638
2639
2640 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2641 {
2642         struct wpabuf *p2p_ie;
2643         int ret;
2644
2645         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2646         if (p2p_ie == NULL)
2647                 return 0;
2648
2649         ret = p2p_attr_text(p2p_ie, buf, end);
2650         wpabuf_free(p2p_ie);
2651         return ret;
2652 }
2653
2654
2655 struct p2ps_advertisement *
2656 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2657 {
2658         struct p2ps_advertisement *adv_data;
2659
2660         if (!p2p)
2661                 return NULL;
2662
2663         adv_data = p2p->p2ps_adv_list;
2664         while (adv_data) {
2665                 if (adv_data->id == adv_id)
2666                         return adv_data;
2667                 adv_data = adv_data->next;
2668         }
2669
2670         return NULL;
2671 }
2672
2673
2674 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2675 {
2676         struct p2ps_advertisement *adv_data;
2677         struct p2ps_advertisement **prior;
2678
2679         if (!p2p)
2680                 return -1;
2681
2682         adv_data = p2p->p2ps_adv_list;
2683         prior = &p2p->p2ps_adv_list;
2684         while (adv_data) {
2685                 if (adv_data->id == adv_id) {
2686                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2687                         *prior = adv_data->next;
2688                         os_free(adv_data);
2689                         return 0;
2690                 }
2691                 prior = &adv_data->next;
2692                 adv_data = adv_data->next;
2693         }
2694
2695         return -1;
2696 }
2697
2698
2699 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2700                         const char *adv_str, u8 svc_state, u16 config_methods,
2701                         const char *svc_info)
2702 {
2703         struct p2ps_advertisement *adv_data, *tmp, **prev;
2704         u8 buf[P2PS_HASH_LEN];
2705         size_t adv_data_len, adv_len, info_len = 0;
2706
2707         if (!p2p || !adv_str || !adv_str[0])
2708                 return -1;
2709
2710         if (!(config_methods & p2p->cfg->config_methods)) {
2711                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2712                         config_methods, p2p->cfg->config_methods);
2713                 return -1;
2714         }
2715
2716         if (!p2ps_gen_hash(p2p, adv_str, buf))
2717                 return -1;
2718
2719         if (svc_info)
2720                 info_len = os_strlen(svc_info);
2721         adv_len = os_strlen(adv_str);
2722         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2723                 info_len + 1;
2724
2725         adv_data = os_zalloc(adv_data_len);
2726         if (!adv_data)
2727                 return -1;
2728
2729         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2730         adv_data->id = adv_id;
2731         adv_data->state = svc_state;
2732         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2733         adv_data->auto_accept = (u8) auto_accept;
2734         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2735
2736         if (svc_info && info_len) {
2737                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2738                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2739         }
2740
2741         /*
2742          * Group Advertisements by service string. They do not need to be
2743          * sorted, but groups allow easier Probe Response instance grouping
2744          */
2745         tmp = p2p->p2ps_adv_list;
2746         prev = &p2p->p2ps_adv_list;
2747         while (tmp) {
2748                 if (tmp->id == adv_data->id) {
2749                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2750                                 os_free(adv_data);
2751                                 return -1;
2752                         }
2753                         adv_data->next = tmp->next;
2754                         *prev = adv_data;
2755                         os_free(tmp);
2756                         goto inserted;
2757                 } else {
2758                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2759                                 adv_data->next = tmp->next;
2760                                 tmp->next = adv_data;
2761                                 goto inserted;
2762                         }
2763                 }
2764                 prev = &tmp->next;
2765                 tmp = tmp->next;
2766         }
2767
2768         /* No svc_name match found */
2769         adv_data->next = p2p->p2ps_adv_list;
2770         p2p->p2ps_adv_list = adv_data;
2771
2772 inserted:
2773         p2p_dbg(p2p,
2774                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2775                 adv_id, adv_data->config_methods, svc_state, adv_str);
2776
2777         return 0;
2778 }
2779
2780
2781 void p2p_service_flush_asp(struct p2p_data *p2p)
2782 {
2783         struct p2ps_advertisement *adv, *prev;
2784
2785         if (!p2p)
2786                 return;
2787
2788         adv = p2p->p2ps_adv_list;
2789         while (adv) {
2790                 prev = adv;
2791                 adv = adv->next;
2792                 os_free(prev);
2793         }
2794
2795         p2p->p2ps_adv_list = NULL;
2796         p2p_dbg(p2p, "All ASP advertisements flushed");
2797 }
2798
2799
2800 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2801 {
2802         struct p2p_message msg;
2803
2804         os_memset(&msg, 0, sizeof(msg));
2805         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2806                 return -1;
2807
2808         if (msg.p2p_device_addr) {
2809                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2810                 return 0;
2811         } else if (msg.device_id) {
2812                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2813                 return 0;
2814         }
2815         return -1;
2816 }
2817
2818
2819 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2820 {
2821         struct wpabuf *p2p_ie;
2822         int ret;
2823
2824         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2825                                              P2P_IE_VENDOR_TYPE);
2826         if (p2p_ie == NULL)
2827                 return -1;
2828         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2829         wpabuf_free(p2p_ie);
2830         return ret;
2831 }
2832
2833
2834 static void p2p_clear_go_neg(struct p2p_data *p2p)
2835 {
2836         p2p->go_neg_peer = NULL;
2837         p2p_clear_timeout(p2p);
2838         p2p_set_state(p2p, P2P_IDLE);
2839 }
2840
2841
2842 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2843 {
2844         if (p2p->go_neg_peer == NULL) {
2845                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2846                 return; /* No pending Group Formation */
2847         }
2848
2849         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2850             0) {
2851                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2852                         MACSTR " (GO Negotiation peer " MACSTR ")",
2853                         MAC2STR(mac_addr),
2854                         MAC2STR(p2p->go_neg_peer->intended_addr));
2855                 return; /* Ignore unexpected peer address */
2856         }
2857
2858         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2859                 MAC2STR(mac_addr));
2860
2861         p2p_clear_go_neg(p2p);
2862 }
2863
2864
2865 void p2p_group_formation_failed(struct p2p_data *p2p)
2866 {
2867         if (p2p->go_neg_peer == NULL) {
2868                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2869                 return; /* No pending Group Formation */
2870         }
2871
2872         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2873                 MAC2STR(p2p->go_neg_peer->intended_addr));
2874
2875         p2p_clear_go_neg(p2p);
2876 }
2877
2878
2879 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2880 {
2881         struct p2p_data *p2p;
2882
2883         if (cfg->max_peers < 1 ||
2884             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2885                 return NULL;
2886
2887         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2888         if (p2p == NULL)
2889                 return NULL;
2890         p2p->cfg = (struct p2p_config *) (p2p + 1);
2891         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2892         if (cfg->dev_name)
2893                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2894         if (cfg->manufacturer)
2895                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2896         if (cfg->model_name)
2897                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2898         if (cfg->model_number)
2899                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2900         if (cfg->serial_number)
2901                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2902         if (cfg->pref_chan) {
2903                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2904                                                 sizeof(struct p2p_channel));
2905                 if (p2p->cfg->pref_chan) {
2906                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2907                                   cfg->num_pref_chan *
2908                                   sizeof(struct p2p_channel));
2909                 } else
2910                         p2p->cfg->num_pref_chan = 0;
2911         }
2912
2913         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2914
2915         p2p->min_disc_int = 1;
2916         p2p->max_disc_int = 3;
2917         p2p->max_disc_tu = -1;
2918
2919         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2920                 p2p->next_tie_breaker = 0;
2921         p2p->next_tie_breaker &= 0x01;
2922         if (cfg->sd_request)
2923                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2924         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2925         if (cfg->concurrent_operations)
2926                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2927         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2928
2929         dl_list_init(&p2p->devices);
2930
2931         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2932                                p2p_expiration_timeout, p2p, NULL);
2933
2934         p2p->go_timeout = 100;
2935         p2p->client_timeout = 20;
2936         p2p->num_p2p_sd_queries = 0;
2937
2938         p2p_dbg(p2p, "initialized");
2939         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2940         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2941
2942         return p2p;
2943 }
2944
2945
2946 void p2p_deinit(struct p2p_data *p2p)
2947 {
2948 #ifdef CONFIG_WIFI_DISPLAY
2949         wpabuf_free(p2p->wfd_ie_beacon);
2950         wpabuf_free(p2p->wfd_ie_probe_req);
2951         wpabuf_free(p2p->wfd_ie_probe_resp);
2952         wpabuf_free(p2p->wfd_ie_assoc_req);
2953         wpabuf_free(p2p->wfd_ie_invitation);
2954         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2955         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2956         wpabuf_free(p2p->wfd_ie_go_neg);
2957         wpabuf_free(p2p->wfd_dev_info);
2958         wpabuf_free(p2p->wfd_assoc_bssid);
2959         wpabuf_free(p2p->wfd_coupled_sink_info);
2960 #endif /* CONFIG_WIFI_DISPLAY */
2961
2962         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2963         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2964         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2965         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2966         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2967         p2p_flush(p2p);
2968         p2p_free_req_dev_types(p2p);
2969         os_free(p2p->cfg->dev_name);
2970         os_free(p2p->cfg->manufacturer);
2971         os_free(p2p->cfg->model_name);
2972         os_free(p2p->cfg->model_number);
2973         os_free(p2p->cfg->serial_number);
2974         os_free(p2p->cfg->pref_chan);
2975         os_free(p2p->groups);
2976         p2ps_prov_free(p2p);
2977         wpabuf_free(p2p->sd_resp);
2978         os_free(p2p->after_scan_tx);
2979         p2p_remove_wps_vendor_extensions(p2p);
2980         os_free(p2p->no_go_freq.range);
2981         p2p_service_flush_asp(p2p);
2982
2983         os_free(p2p);
2984 }
2985
2986
2987 void p2p_flush(struct p2p_data *p2p)
2988 {
2989         struct p2p_device *dev, *prev;
2990         p2p_stop_find(p2p);
2991         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2992                               list) {
2993                 dl_list_del(&dev->list);
2994                 p2p_device_free(p2p, dev);
2995         }
2996         p2p_free_sd_queries(p2p);
2997         os_free(p2p->after_scan_tx);
2998         p2p->after_scan_tx = NULL;
2999 }
3000
3001
3002 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3003 {
3004         struct p2p_device *dev;
3005
3006         dev = p2p_get_device(p2p, addr);
3007         if (dev == NULL)
3008                 return -1;
3009
3010         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3011
3012         if (p2p->go_neg_peer == dev) {
3013                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3014                 p2p->go_neg_peer = NULL;
3015         }
3016
3017         dev->wps_method = WPS_NOT_READY;
3018         dev->oob_pw_id = 0;
3019         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3020         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3021
3022         /* Check if after_scan_tx is for this peer. If so free it */
3023         if (p2p->after_scan_tx &&
3024             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3025                 os_free(p2p->after_scan_tx);
3026                 p2p->after_scan_tx = NULL;
3027         }
3028
3029         return 0;
3030 }
3031
3032
3033 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3034 {
3035         os_free(p2p->cfg->dev_name);
3036         if (dev_name) {
3037                 p2p->cfg->dev_name = os_strdup(dev_name);
3038                 if (p2p->cfg->dev_name == NULL)
3039                         return -1;
3040         } else
3041                 p2p->cfg->dev_name = NULL;
3042         return 0;
3043 }
3044
3045
3046 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3047 {
3048         os_free(p2p->cfg->manufacturer);
3049         p2p->cfg->manufacturer = NULL;
3050         if (manufacturer) {
3051                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3052                 if (p2p->cfg->manufacturer == NULL)
3053                         return -1;
3054         }
3055
3056         return 0;
3057 }
3058
3059
3060 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3061 {
3062         os_free(p2p->cfg->model_name);
3063         p2p->cfg->model_name = NULL;
3064         if (model_name) {
3065                 p2p->cfg->model_name = os_strdup(model_name);
3066                 if (p2p->cfg->model_name == NULL)
3067                         return -1;
3068         }
3069
3070         return 0;
3071 }
3072
3073
3074 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3075 {
3076         os_free(p2p->cfg->model_number);
3077         p2p->cfg->model_number = NULL;
3078         if (model_number) {
3079                 p2p->cfg->model_number = os_strdup(model_number);
3080                 if (p2p->cfg->model_number == NULL)
3081                         return -1;
3082         }
3083
3084         return 0;
3085 }
3086
3087
3088 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3089 {
3090         os_free(p2p->cfg->serial_number);
3091         p2p->cfg->serial_number = NULL;
3092         if (serial_number) {
3093                 p2p->cfg->serial_number = os_strdup(serial_number);
3094                 if (p2p->cfg->serial_number == NULL)
3095                         return -1;
3096         }
3097
3098         return 0;
3099 }
3100
3101
3102 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3103 {
3104         p2p->cfg->config_methods = config_methods;
3105 }
3106
3107
3108 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3109 {
3110         os_memcpy(p2p->cfg->uuid, uuid, 16);
3111 }
3112
3113
3114 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3115 {
3116         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3117         return 0;
3118 }
3119
3120
3121 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3122                           size_t num_dev_types)
3123 {
3124         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3125                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3126         p2p->cfg->num_sec_dev_types = num_dev_types;
3127         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3128         return 0;
3129 }
3130
3131
3132 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3133 {
3134         int i;
3135
3136         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3137                 wpabuf_free(p2p->wps_vendor_ext[i]);
3138                 p2p->wps_vendor_ext[i] = NULL;
3139         }
3140 }
3141
3142
3143 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3144                                  const struct wpabuf *vendor_ext)
3145 {
3146         int i;
3147
3148         if (vendor_ext == NULL)
3149                 return -1;
3150
3151         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3152                 if (p2p->wps_vendor_ext[i] == NULL)
3153                         break;
3154         }
3155         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3156                 return -1;
3157
3158         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3159         if (p2p->wps_vendor_ext[i] == NULL)
3160                 return -1;
3161
3162         return 0;
3163 }
3164
3165
3166 int p2p_set_country(struct p2p_data *p2p, const char *country)
3167 {
3168         os_memcpy(p2p->cfg->country, country, 3);
3169         return 0;
3170 }
3171
3172
3173 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3174 {
3175         if (dev->sd_pending_bcast_queries == 0) {
3176                 /* Initialize with total number of registered broadcast
3177                  * SD queries. */
3178                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3179         }
3180
3181         if (p2p_start_sd(p2p, dev) == 0)
3182                 return 1;
3183
3184         if (dev->req_config_methods &&
3185             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3186                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3187                         MACSTR " (config methods 0x%x)",
3188                         MAC2STR(dev->info.p2p_device_addr),
3189                         dev->req_config_methods);
3190                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3191                         return 1;
3192         }
3193
3194         return 0;
3195 }
3196
3197
3198 void p2p_continue_find(struct p2p_data *p2p)
3199 {
3200         struct p2p_device *dev;
3201         int found;
3202
3203         p2p_set_state(p2p, P2P_SEARCH);
3204
3205         /* Continue from the device following the last iteration */
3206         found = 0;
3207         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3208                 if (dev == p2p->last_p2p_find_oper) {
3209                         found = 1;
3210                         continue;
3211                 }
3212                 if (!found)
3213                         continue;
3214                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3215                         p2p->last_p2p_find_oper = dev;
3216                         return;
3217                 }
3218         }
3219
3220         /*
3221          * Wrap around to the beginning of the list and continue until the last
3222          * iteration device.
3223          */
3224         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3225                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3226                         p2p->last_p2p_find_oper = dev;
3227                         return;
3228                 }
3229                 if (dev == p2p->last_p2p_find_oper)
3230                         break;
3231         }
3232
3233         p2p_listen_in_find(p2p, 1);
3234 }
3235
3236
3237 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3238 {
3239         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3240                 success);
3241         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3242
3243         if (!success) {
3244                 if (p2p->sd_peer)
3245                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3246                 p2p->sd_peer = NULL;
3247                 if (p2p->state != P2P_IDLE)
3248                         p2p_continue_find(p2p);
3249                 return;
3250         }
3251
3252         if (p2p->sd_peer == NULL) {
3253                 p2p_dbg(p2p, "No SD peer entry known");
3254                 if (p2p->state != P2P_IDLE)
3255                         p2p_continue_find(p2p);
3256                 return;
3257         }
3258
3259         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3260                 /* Update the pending broadcast SD query count for this device
3261                  */
3262                 p2p->sd_peer->sd_pending_bcast_queries--;
3263
3264                 /*
3265                  * If there are no pending broadcast queries for this device,
3266                  * mark it as done (-1).
3267                  */
3268                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3269                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3270         }
3271
3272         /* Wait for response from the peer */
3273         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3274         p2p_set_timeout(p2p, 0, 200000);
3275 }
3276
3277
3278 /**
3279  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3280  * @p2p: P2P module context from p2p_init()
3281  */
3282 static void p2p_retry_pd(struct p2p_data *p2p)
3283 {
3284         struct p2p_device *dev;
3285
3286         /*
3287          * Retry the prov disc req attempt only for the peer that the user had
3288          * requested.
3289          */
3290
3291         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3292                 if (os_memcmp(p2p->pending_pd_devaddr,
3293                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3294                         continue;
3295                 if (!dev->req_config_methods)
3296                         continue;
3297
3298                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3299                         MACSTR " (config methods 0x%x)",
3300                         MAC2STR(dev->info.p2p_device_addr),
3301                         dev->req_config_methods);
3302                 p2p_send_prov_disc_req(p2p, dev,
3303                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3304                                        p2p->pd_force_freq);
3305                 return;
3306         }
3307 }
3308
3309
3310 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3311 {
3312         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3313                 success);
3314
3315         /*
3316          * Postpone resetting the pending action state till after we actually
3317          * time out. This allows us to take some action like notifying any
3318          * interested parties about no response to the request.
3319          *
3320          * When the timer (below) goes off we check in IDLE, SEARCH, or
3321          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3322          * requests in, if this was still pending and then raise notification.
3323          */
3324
3325         if (!success) {
3326                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3327
3328                 if (p2p->user_initiated_pd &&
3329                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3330                 {
3331                         /* Retry request from timeout to avoid busy loops */
3332                         p2p->pending_action_state = P2P_PENDING_PD;
3333                         p2p_set_timeout(p2p, 0, 50000);
3334                 } else if (p2p->state != P2P_IDLE)
3335                         p2p_continue_find(p2p);
3336                 else if (p2p->user_initiated_pd) {
3337                         p2p->pending_action_state = P2P_PENDING_PD;
3338                         p2p_set_timeout(p2p, 0, 300000);
3339                 }
3340                 return;
3341         }
3342
3343         /*
3344          * This postponing, of resetting pending_action_state, needs to be
3345          * done only for user initiated PD requests and not internal ones.
3346          */
3347         if (p2p->user_initiated_pd)
3348                 p2p->pending_action_state = P2P_PENDING_PD;
3349         else
3350                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3351
3352         /* Wait for response from the peer */
3353         if (p2p->state == P2P_SEARCH)
3354                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3355         p2p_set_timeout(p2p, 0, 200000);
3356 }
3357
3358
3359 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3360 {
3361         if (p2p->after_scan_tx_in_progress) {
3362                 p2p->after_scan_tx_in_progress = 0;
3363                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3364                     p2p_run_after_scan(p2p))
3365                         return 1;
3366                 if (p2p->state == P2P_SEARCH) {
3367                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3368                         p2p_continue_find(p2p);
3369                 }
3370         }
3371
3372         return 0;
3373 }
3374
3375
3376 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3377 {
3378         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3379                 success);
3380
3381         if (p2p->send_action_in_progress) {
3382                 p2p->send_action_in_progress = 0;
3383                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3384         }
3385
3386         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3387
3388         if (!success)
3389                 goto continue_search;
3390
3391         if (!p2p->cfg->prov_disc_resp_cb ||
3392             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3393                 goto continue_search;
3394
3395         p2p_dbg(p2p,
3396                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3397         return;
3398
3399 continue_search:
3400         p2p_check_after_scan_tx_continuation(p2p);
3401 }
3402
3403
3404 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3405                          struct os_reltime *rx_time, int level, const u8 *ies,
3406                          size_t ies_len)
3407 {
3408         if (os_reltime_before(rx_time, &p2p->find_start)) {
3409                 /*
3410                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3411                  * scan results for relatively long time. To avoid reporting
3412                  * stale information, update P2P peers only based on results
3413                  * that have based on frames received after the last p2p_find
3414                  * operation was started.
3415                  */
3416                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3417                         " (rx_time=%u.%06u)",
3418                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3419                         (unsigned int) rx_time->usec);
3420                 return 0;
3421         }
3422
3423         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3424
3425         return 0;
3426 }
3427
3428
3429 void p2p_scan_res_handled(struct p2p_data *p2p)
3430 {
3431         if (!p2p->p2p_scan_running) {
3432                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3433         }
3434         p2p->p2p_scan_running = 0;
3435         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3436
3437         if (p2p_run_after_scan(p2p))
3438                 return;
3439         if (p2p->state == P2P_SEARCH)
3440                 p2p_continue_find(p2p);
3441 }
3442
3443
3444 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3445 {
3446         u8 dev_capab;
3447         u8 *len;
3448
3449 #ifdef CONFIG_WIFI_DISPLAY
3450         if (p2p->wfd_ie_probe_req)
3451                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3452 #endif /* CONFIG_WIFI_DISPLAY */
3453
3454         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3455                 wpabuf_put_buf(ies,
3456                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3457
3458         len = p2p_buf_add_ie_hdr(ies);
3459
3460         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3461
3462         /* P2PS requires Probe Request frames to include SD bit */
3463         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3464                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3465
3466         p2p_buf_add_capability(ies, dev_capab, 0);
3467
3468         if (dev_id)
3469                 p2p_buf_add_device_id(ies, dev_id);
3470         if (p2p->cfg->reg_class && p2p->cfg->channel)
3471                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3472                                            p2p->cfg->reg_class,
3473                                            p2p->cfg->channel);
3474         if (p2p->ext_listen_interval)
3475                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3476                                               p2p->ext_listen_interval);
3477
3478         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3479                 p2p_buf_add_service_hash(ies, p2p);
3480
3481         /* TODO: p2p_buf_add_operating_channel() if GO */
3482         p2p_buf_update_ie_hdr(ies, len);
3483 }
3484
3485
3486 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3487 {
3488         size_t len = 100;
3489
3490 #ifdef CONFIG_WIFI_DISPLAY
3491         if (p2p && p2p->wfd_ie_probe_req)
3492                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3493 #endif /* CONFIG_WIFI_DISPLAY */
3494
3495         if (p2p && p2p->vendor_elem &&
3496             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3497                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3498
3499         return len;
3500 }
3501
3502
3503 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3504 {
3505         return p2p_attr_text(p2p_ie, buf, end);
3506 }
3507
3508
3509 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3510 {
3511         struct p2p_device *dev = p2p->go_neg_peer;
3512         int timeout;
3513
3514         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3515
3516         if (dev == NULL) {
3517                 p2p_dbg(p2p, "No pending GO Negotiation");
3518                 return;
3519         }
3520
3521         if (success) {
3522                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3523                         p2p_set_state(p2p, P2P_IDLE);
3524                         return;
3525                 }
3526         } else if (dev->go_neg_req_sent) {
3527                 /* Cancel the increment from p2p_connect_send() on failure */
3528                 dev->go_neg_req_sent--;
3529         }
3530
3531         if (!success &&
3532             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3533             !is_zero_ether_addr(dev->member_in_go_dev)) {
3534                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3535                         MAC2STR(dev->info.p2p_device_addr));
3536                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3537                 p2p_send_dev_disc_req(p2p, dev);
3538                 return;
3539         }
3540
3541         /*
3542          * Use P2P find, if needed, to find the other device from its listen
3543          * channel.
3544          */
3545         p2p_set_state(p2p, P2P_CONNECT);
3546         timeout = success ? 500000 : 100000;
3547         if (!success && p2p->go_neg_peer &&
3548             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3549                 unsigned int r;
3550                 /*
3551                  * Peer is expected to wait our response and we will skip the
3552                  * listen phase. Add some randomness to the wait time here to
3553                  * make it less likely to hit cases where we could end up in
3554                  * sync with peer not listening.
3555                  */
3556                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3557                         r = 0;
3558                 timeout += r % 100000;
3559         }
3560         p2p_set_timeout(p2p, 0, timeout);
3561 }
3562
3563
3564 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3565 {
3566         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3567                 success);
3568         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3569                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3570                 return;
3571         }
3572         p2p_set_state(p2p, P2P_CONNECT);
3573         p2p_set_timeout(p2p, 0, 500000);
3574 }
3575
3576
3577 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3578                                        const u8 *addr)
3579 {
3580         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3581         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3582                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3583                 return;
3584         }
3585
3586         if (success) {
3587                 struct p2p_device *dev;
3588                 dev = p2p_get_device(p2p, addr);
3589                 if (dev &&
3590                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3591                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3592         }
3593
3594         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3595                 p2p_continue_find(p2p);
3596 }
3597
3598
3599 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3600                                enum p2p_send_action_result result)
3601 {
3602         struct p2p_device *dev;
3603
3604         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3605         if (result == P2P_SEND_ACTION_FAILED) {
3606                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3607                 p2p_go_neg_failed(p2p, -1);
3608                 return;
3609         }
3610
3611         dev = p2p->go_neg_peer;
3612
3613         if (result == P2P_SEND_ACTION_NO_ACK) {
3614                 /*
3615                  * Retry GO Negotiation Confirmation
3616                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3617                  * ACK for confirmation.
3618                  */
3619                 if (dev && dev->go_neg_conf &&
3620                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3621                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3622                                 dev->go_neg_conf_sent);
3623                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3624                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3625                                             dev->info.p2p_device_addr,
3626                                             p2p->cfg->dev_addr,
3627                                             dev->info.p2p_device_addr,
3628                                             wpabuf_head(dev->go_neg_conf),
3629                                             wpabuf_len(dev->go_neg_conf), 0) >=
3630                             0) {
3631                                 dev->go_neg_conf_sent++;
3632                                 return;
3633                         }
3634                         p2p_dbg(p2p, "Failed to re-send Action frame");
3635
3636                         /*
3637                          * Continue with the assumption that the first attempt
3638                          * went through and just the ACK frame was lost.
3639                          */
3640                 }
3641
3642                 /*
3643                  * It looks like the TX status for GO Negotiation Confirm is
3644                  * often showing failure even when the peer has actually
3645                  * received the frame. Since the peer may change channels
3646                  * immediately after having received the frame, we may not see
3647                  * an Ack for retries, so just dropping a single frame may
3648                  * trigger this. To allow the group formation to succeed if the
3649                  * peer did indeed receive the frame, continue regardless of
3650                  * the TX status.
3651                  */
3652                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3653         }
3654
3655         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3656
3657         if (dev == NULL)
3658                 return;
3659
3660         p2p_go_complete(p2p, dev);
3661 }
3662
3663
3664 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3665                         const u8 *src, const u8 *bssid,
3666                         enum p2p_send_action_result result)
3667 {
3668         enum p2p_pending_action_state state;
3669         int success;
3670
3671         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3672                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3673                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3674                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3675         success = result == P2P_SEND_ACTION_SUCCESS;
3676         state = p2p->pending_action_state;
3677         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3678         switch (state) {
3679         case P2P_NO_PENDING_ACTION:
3680                 if (p2p->send_action_in_progress) {
3681                         p2p->send_action_in_progress = 0;
3682                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3683                 }
3684                 p2p_check_after_scan_tx_continuation(p2p);
3685                 break;
3686         case P2P_PENDING_GO_NEG_REQUEST:
3687                 p2p_go_neg_req_cb(p2p, success);
3688                 break;
3689         case P2P_PENDING_GO_NEG_RESPONSE:
3690                 p2p_go_neg_resp_cb(p2p, success);
3691                 break;
3692         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3693                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3694                 break;
3695         case P2P_PENDING_GO_NEG_CONFIRM:
3696                 p2p_go_neg_conf_cb(p2p, result);
3697                 break;
3698         case P2P_PENDING_SD:
3699                 p2p_sd_cb(p2p, success);
3700                 break;
3701         case P2P_PENDING_PD:
3702                 p2p_prov_disc_cb(p2p, success);
3703                 break;
3704         case P2P_PENDING_PD_RESPONSE:
3705                 p2p_prov_disc_resp_cb(p2p, success);
3706                 break;
3707         case P2P_PENDING_INVITATION_REQUEST:
3708                 p2p_invitation_req_cb(p2p, success);
3709                 break;
3710         case P2P_PENDING_INVITATION_RESPONSE:
3711                 p2p_invitation_resp_cb(p2p, success);
3712                 break;
3713         case P2P_PENDING_DEV_DISC_REQUEST:
3714                 p2p_dev_disc_req_cb(p2p, success);
3715                 break;
3716         case P2P_PENDING_DEV_DISC_RESPONSE:
3717                 p2p_dev_disc_resp_cb(p2p, success);
3718                 break;
3719         case P2P_PENDING_GO_DISC_REQ:
3720                 p2p_go_disc_req_cb(p2p, success);
3721                 break;
3722         }
3723
3724         p2p->after_scan_tx_in_progress = 0;
3725 }
3726
3727
3728 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3729                    unsigned int duration)
3730 {
3731         if (freq == p2p->pending_client_disc_freq) {
3732                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3733                 p2p->pending_client_disc_freq = 0;
3734                 return;
3735         }
3736
3737         if (freq != p2p->pending_listen_freq) {
3738                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3739                         freq, duration, p2p->pending_listen_freq);
3740                 return;
3741         }
3742
3743         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3744                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3745                 p2p->pending_listen_freq);
3746         p2p->in_listen = 1;
3747         p2p->drv_in_listen = freq;
3748         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3749                 /*
3750                  * Add 20 msec extra wait to avoid race condition with driver
3751                  * remain-on-channel end event, i.e., give driver more time to
3752                  * complete the operation before our timeout expires.
3753                  */
3754                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3755                                 p2p->pending_listen_usec + 20000);
3756         }
3757
3758         p2p->pending_listen_freq = 0;
3759 }
3760
3761
3762 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3763 {
3764         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3765         p2p->drv_in_listen = 0;
3766         if (p2p->in_listen)
3767                 return 0; /* Internal timeout will trigger the next step */
3768
3769         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3770                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3771                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3772                         p2p_go_neg_failed(p2p, -1);
3773                         return 0;
3774                 }
3775
3776                 p2p_set_state(p2p, P2P_CONNECT);
3777                 p2p_connect_send(p2p, p2p->go_neg_peer);
3778                 return 1;
3779         } else if (p2p->state == P2P_SEARCH) {
3780                 if (p2p->p2p_scan_running) {
3781                          /*
3782                           * Search is already in progress. This can happen if
3783                           * an Action frame RX is reported immediately after
3784                           * the end of a remain-on-channel operation and the
3785                           * response frame to that is sent using an offchannel
3786                           * operation while in p2p_find. Avoid an attempt to
3787                           * restart a scan here.
3788                           */
3789                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3790                         return 1;
3791                 }
3792                 if (p2p->pending_listen_freq) {
3793                         /*
3794                          * Better wait a bit if the driver is unable to start
3795                          * offchannel operation for some reason. p2p_search()
3796                          * will be started from internal timeout.
3797                          */
3798                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3799                         p2p_set_timeout(p2p, 0, 100000);
3800                         return 1;
3801                 }
3802                 if (p2p->search_delay) {
3803                         p2p_dbg(p2p, "Delay search operation by %u ms",
3804                                 p2p->search_delay);
3805                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3806                                         (p2p->search_delay % 1000) * 1000);
3807                         return 1;
3808                 }
3809                 p2p_search(p2p);
3810                 return 1;
3811         }
3812
3813         return 0;
3814 }
3815
3816
3817 static void p2p_timeout_connect(struct p2p_data *p2p)
3818 {
3819         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3820         if (p2p->go_neg_peer &&
3821             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3822                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3823                 p2p_go_neg_failed(p2p, -1);
3824                 return;
3825         }
3826         if (p2p->go_neg_peer &&
3827             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3828             p2p->go_neg_peer->connect_reqs < 120) {
3829                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3830                 p2p_connect_send(p2p, p2p->go_neg_peer);
3831                 return;
3832         }
3833         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3834                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3835                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3836                 p2p_set_timeout(p2p, 0, 30000);
3837                 return;
3838         }
3839         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3840         p2p_listen_in_find(p2p, 0);
3841 }
3842
3843
3844 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3845 {
3846         if (p2p->go_neg_peer) {
3847                 if (p2p->drv_in_listen) {
3848                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3849                         return;
3850                 }
3851
3852                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3853                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3854                         p2p_go_neg_failed(p2p, -1);
3855                         return;
3856                 }
3857
3858                 p2p_set_state(p2p, P2P_CONNECT);
3859                 p2p_connect_send(p2p, p2p->go_neg_peer);
3860         } else
3861                 p2p_set_state(p2p, P2P_IDLE);
3862 }
3863
3864
3865 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3866 {
3867         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3868
3869         if (p2p->cfg->is_concurrent_session_active &&
3870             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3871                 p2p_set_timeout(p2p, 0, 500000);
3872         else
3873                 p2p_set_timeout(p2p, 0, 200000);
3874 }
3875
3876
3877 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3878 {
3879         struct p2p_device *dev = p2p->go_neg_peer;
3880
3881         if (dev == NULL) {
3882                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3883                 return;
3884         }
3885
3886         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3887         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3888         p2p_listen_in_find(p2p, 0);
3889 }
3890
3891
3892 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3893 {
3894         p2p_dbg(p2p, "Service Discovery Query timeout");
3895         if (p2p->sd_peer) {
3896                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3897                 p2p->sd_peer = NULL;
3898         }
3899         p2p_continue_find(p2p);
3900 }
3901
3902
3903 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3904 {
3905         p2p_dbg(p2p, "Provision Discovery Request timeout");
3906         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3907         p2p_continue_find(p2p);
3908 }
3909
3910
3911 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3912 {
3913         u32 adv_id = 0;
3914         u8 *adv_mac = NULL;
3915
3916         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3917
3918         /*
3919          * For user initiated PD requests that we have not gotten any responses
3920          * for while in IDLE state, we retry them a couple of times before
3921          * giving up.
3922          */
3923         if (!p2p->user_initiated_pd)
3924                 return;
3925
3926         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3927
3928         if (p2p->pd_retries) {
3929                 p2p->pd_retries--;
3930                 p2p_retry_pd(p2p);
3931         } else {
3932                 struct p2p_device *dev;
3933                 int for_join = 0;
3934
3935                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3936                         if (os_memcmp(p2p->pending_pd_devaddr,
3937                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3938                                 continue;
3939                         if (dev->req_config_methods &&
3940                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3941                                 for_join = 1;
3942                 }
3943
3944                 if (p2p->p2ps_prov) {
3945                         adv_id = p2p->p2ps_prov->adv_id;
3946                         adv_mac = p2p->p2ps_prov->adv_mac;
3947                 }
3948
3949                 if (p2p->cfg->prov_disc_fail)
3950                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3951                                                  p2p->pending_pd_devaddr,
3952                                                  for_join ?
3953                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3954                                                  P2P_PROV_DISC_TIMEOUT,
3955                                                  adv_id, adv_mac, NULL);
3956                 p2p_reset_pending_pd(p2p);
3957         }
3958 }
3959
3960
3961 static void p2p_timeout_invite(struct p2p_data *p2p)
3962 {
3963         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3964         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3965         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3966                 /*
3967                  * Better remain on operating channel instead of listen channel
3968                  * when running a group.
3969                  */
3970                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3971                 p2p_set_timeout(p2p, 0, 100000);
3972                 return;
3973         }
3974         p2p_listen_in_find(p2p, 0);
3975 }
3976
3977
3978 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3979 {
3980         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3981                 p2p_set_state(p2p, P2P_INVITE);
3982                 p2p_invite_send(p2p, p2p->invite_peer,
3983                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3984         } else {
3985                 if (p2p->invite_peer) {
3986                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3987                         if (p2p->cfg->invitation_result)
3988                                 p2p->cfg->invitation_result(
3989                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3990                                         p2p->invite_peer->info.p2p_device_addr,
3991                                         0, 0);
3992                 }
3993                 p2p_set_state(p2p, P2P_IDLE);
3994         }
3995 }
3996
3997
3998 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3999 {
4000         struct p2p_data *p2p = eloop_ctx;
4001
4002         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4003
4004         p2p->in_listen = 0;
4005         if (p2p->drv_in_listen) {
4006                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4007                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4008         }
4009
4010         switch (p2p->state) {
4011         case P2P_IDLE:
4012                 /* Check if we timed out waiting for PD req */
4013                 if (p2p->pending_action_state == P2P_PENDING_PD)
4014                         p2p_timeout_prov_disc_req(p2p);
4015                 break;
4016         case P2P_SEARCH:
4017                 /* Check if we timed out waiting for PD req */
4018                 if (p2p->pending_action_state == P2P_PENDING_PD)
4019                         p2p_timeout_prov_disc_req(p2p);
4020                 if (p2p->search_delay && !p2p->in_search_delay) {
4021                         p2p_dbg(p2p, "Delay search operation by %u ms",
4022                                 p2p->search_delay);
4023                         p2p->in_search_delay = 1;
4024                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4025                                         (p2p->search_delay % 1000) * 1000);
4026                         break;
4027                 }
4028                 p2p->in_search_delay = 0;
4029                 p2p_search(p2p);
4030                 break;
4031         case P2P_CONNECT:
4032                 p2p_timeout_connect(p2p);
4033                 break;
4034         case P2P_CONNECT_LISTEN:
4035                 p2p_timeout_connect_listen(p2p);
4036                 break;
4037         case P2P_GO_NEG:
4038                 break;
4039         case P2P_LISTEN_ONLY:
4040                 /* Check if we timed out waiting for PD req */
4041                 if (p2p->pending_action_state == P2P_PENDING_PD)
4042                         p2p_timeout_prov_disc_req(p2p);
4043
4044                 if (p2p->ext_listen_only) {
4045                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4046                         p2p->ext_listen_only = 0;
4047                         p2p_set_state(p2p, P2P_IDLE);
4048                 }
4049                 break;
4050         case P2P_WAIT_PEER_CONNECT:
4051                 p2p_timeout_wait_peer_connect(p2p);
4052                 break;
4053         case P2P_WAIT_PEER_IDLE:
4054                 p2p_timeout_wait_peer_idle(p2p);
4055                 break;
4056         case P2P_SD_DURING_FIND:
4057                 p2p_timeout_sd_during_find(p2p);
4058                 break;
4059         case P2P_PROVISIONING:
4060                 break;
4061         case P2P_PD_DURING_FIND:
4062                 p2p_timeout_prov_disc_during_find(p2p);
4063                 break;
4064         case P2P_INVITE:
4065                 p2p_timeout_invite(p2p);
4066                 break;
4067         case P2P_INVITE_LISTEN:
4068                 p2p_timeout_invite_listen(p2p);
4069                 break;
4070         }
4071 }
4072
4073
4074 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4075 {
4076         struct p2p_device *dev;
4077
4078         dev = p2p_get_device(p2p, peer_addr);
4079         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4080                 MACSTR, MAC2STR(peer_addr));
4081         if (dev == NULL) {
4082                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4083                 return -1;
4084         }
4085         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4086         dev->flags |= P2P_DEV_USER_REJECTED;
4087         return 0;
4088 }
4089
4090
4091 const char * p2p_wps_method_text(enum p2p_wps_method method)
4092 {
4093         switch (method) {
4094         case WPS_NOT_READY:
4095                 return "not-ready";
4096         case WPS_PIN_DISPLAY:
4097                 return "Display";
4098         case WPS_PIN_KEYPAD:
4099                 return "Keypad";
4100         case WPS_PBC:
4101                 return "PBC";
4102         case WPS_NFC:
4103                 return "NFC";
4104         case WPS_P2PS:
4105                 return "P2PS";
4106         }
4107
4108         return "??";
4109 }
4110
4111
4112 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4113 {
4114         switch (go_state) {
4115         case UNKNOWN_GO:
4116                 return "unknown";
4117         case LOCAL_GO:
4118                 return "local";
4119         case  REMOTE_GO:
4120                 return "remote";
4121         }
4122
4123         return "??";
4124 }
4125
4126
4127 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4128                                                const u8 *addr, int next)
4129 {
4130         struct p2p_device *dev;
4131
4132         if (addr)
4133                 dev = p2p_get_device(p2p, addr);
4134         else
4135                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4136
4137         if (dev && next) {
4138                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4139                 if (&dev->list == &p2p->devices)
4140                         dev = NULL;
4141         }
4142
4143         if (dev == NULL)
4144                 return NULL;
4145
4146         return &dev->info;
4147 }
4148
4149
4150 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4151                           char *buf, size_t buflen)
4152 {
4153         struct p2p_device *dev;
4154         int res;
4155         char *pos, *end;
4156         struct os_reltime now;
4157
4158         if (info == NULL)
4159                 return -1;
4160
4161         dev = (struct p2p_device *) (((u8 *) info) -
4162                                      offsetof(struct p2p_device, info));
4163
4164         pos = buf;
4165         end = buf + buflen;
4166
4167         os_get_reltime(&now);
4168         res = os_snprintf(pos, end - pos,
4169                           "age=%d\n"
4170                           "listen_freq=%d\n"
4171                           "wps_method=%s\n"
4172                           "interface_addr=" MACSTR "\n"
4173                           "member_in_go_dev=" MACSTR "\n"
4174                           "member_in_go_iface=" MACSTR "\n"
4175                           "go_neg_req_sent=%d\n"
4176                           "go_state=%s\n"
4177                           "dialog_token=%u\n"
4178                           "intended_addr=" MACSTR "\n"
4179                           "country=%c%c\n"
4180                           "oper_freq=%d\n"
4181                           "req_config_methods=0x%x\n"
4182                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4183                           "status=%d\n"
4184                           "invitation_reqs=%u\n",
4185                           (int) (now.sec - dev->last_seen.sec),
4186                           dev->listen_freq,
4187                           p2p_wps_method_text(dev->wps_method),
4188                           MAC2STR(dev->interface_addr),
4189                           MAC2STR(dev->member_in_go_dev),
4190                           MAC2STR(dev->member_in_go_iface),
4191                           dev->go_neg_req_sent,
4192                           p2p_go_state_text(dev->go_state),
4193                           dev->dialog_token,
4194                           MAC2STR(dev->intended_addr),
4195                           dev->country[0] ? dev->country[0] : '_',
4196                           dev->country[1] ? dev->country[1] : '_',
4197                           dev->oper_freq,
4198                           dev->req_config_methods,
4199                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4200                           "[PROBE_REQ_ONLY]" : "",
4201                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4202                           dev->flags & P2P_DEV_NOT_YET_READY ?
4203                           "[NOT_YET_READY]" : "",
4204                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4205                           "[PD_PEER_DISPLAY]" : "",
4206                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4207                           "[PD_PEER_KEYPAD]" : "",
4208                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4209                           "[PD_PEER_P2PS]" : "",
4210                           dev->flags & P2P_DEV_USER_REJECTED ?
4211                           "[USER_REJECTED]" : "",
4212                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4213                           "[PEER_WAITING_RESPONSE]" : "",
4214                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4215                           "[PREFER_PERSISTENT_GROUP]" : "",
4216                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4217                           "[WAIT_GO_NEG_RESPONSE]" : "",
4218                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4219                           "[WAIT_GO_NEG_CONFIRM]" : "",
4220                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4221                           "[GROUP_CLIENT_ONLY]" : "",
4222                           dev->flags & P2P_DEV_FORCE_FREQ ?
4223                           "[FORCE_FREQ]" : "",
4224                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4225                           "[PD_FOR_JOIN]" : "",
4226                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4227                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4228                           dev->status,
4229                           dev->invitation_reqs);
4230         if (os_snprintf_error(end - pos, res))
4231                 return pos - buf;
4232         pos += res;
4233
4234         if (dev->ext_listen_period) {
4235                 res = os_snprintf(pos, end - pos,
4236                                   "ext_listen_period=%u\n"
4237                                   "ext_listen_interval=%u\n",
4238                                   dev->ext_listen_period,
4239                                   dev->ext_listen_interval);
4240                 if (os_snprintf_error(end - pos, res))
4241                         return pos - buf;
4242                 pos += res;
4243         }
4244
4245         if (dev->oper_ssid_len) {
4246                 res = os_snprintf(pos, end - pos,
4247                                   "oper_ssid=%s\n",
4248                                   wpa_ssid_txt(dev->oper_ssid,
4249                                                dev->oper_ssid_len));
4250                 if (os_snprintf_error(end - pos, res))
4251                         return pos - buf;
4252                 pos += res;
4253         }
4254
4255 #ifdef CONFIG_WIFI_DISPLAY
4256         if (dev->info.wfd_subelems) {
4257                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4258                 if (os_snprintf_error(end - pos, res))
4259                         return pos - buf;
4260                 pos += res;
4261
4262                 pos += wpa_snprintf_hex(pos, end - pos,
4263                                         wpabuf_head(dev->info.wfd_subelems),
4264                                         wpabuf_len(dev->info.wfd_subelems));
4265
4266                 res = os_snprintf(pos, end - pos, "\n");
4267                 if (os_snprintf_error(end - pos, res))
4268                         return pos - buf;
4269                 pos += res;
4270         }
4271 #endif /* CONFIG_WIFI_DISPLAY */
4272
4273         return pos - buf;
4274 }
4275
4276
4277 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4278 {
4279         return p2p_get_device(p2p, addr) != NULL;
4280 }
4281
4282
4283 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4284 {
4285         if (enabled) {
4286                 p2p_dbg(p2p, "Client discoverability enabled");
4287                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4288         } else {
4289                 p2p_dbg(p2p, "Client discoverability disabled");
4290                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4291         }
4292 }
4293
4294
4295 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4296                                               u32 duration2, u32 interval2)
4297 {
4298         struct wpabuf *req;
4299         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4300         u8 *len;
4301
4302         req = wpabuf_alloc(100);
4303         if (req == NULL)
4304                 return NULL;
4305
4306         if (duration1 || interval1) {
4307                 os_memset(&desc1, 0, sizeof(desc1));
4308                 desc1.count_type = 1;
4309                 desc1.duration = duration1;
4310                 desc1.interval = interval1;
4311                 ptr1 = &desc1;
4312
4313                 if (duration2 || interval2) {
4314                         os_memset(&desc2, 0, sizeof(desc2));
4315                         desc2.count_type = 2;
4316                         desc2.duration = duration2;
4317                         desc2.interval = interval2;
4318                         ptr2 = &desc2;
4319                 }
4320         }
4321
4322         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4323         len = p2p_buf_add_ie_hdr(req);
4324         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4325         p2p_buf_update_ie_hdr(req, len);
4326
4327         return req;
4328 }
4329
4330
4331 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4332                      const u8 *own_interface_addr, unsigned int freq,
4333                      u32 duration1, u32 interval1, u32 duration2,
4334                      u32 interval2)
4335 {
4336         struct wpabuf *req;
4337
4338         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4339                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4340                 "dur2=%u int2=%u",
4341                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4342                 freq, duration1, interval1, duration2, interval2);
4343
4344         req = p2p_build_presence_req(duration1, interval1, duration2,
4345                                      interval2);
4346         if (req == NULL)
4347                 return -1;
4348
4349         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4350         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4351                             go_interface_addr,
4352                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4353                 p2p_dbg(p2p, "Failed to send Action frame");
4354         }
4355         wpabuf_free(req);
4356
4357         return 0;
4358 }
4359
4360
4361 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4362                                                size_t noa_len, u8 dialog_token)
4363 {
4364         struct wpabuf *resp;
4365         u8 *len;
4366
4367         resp = wpabuf_alloc(100 + noa_len);
4368         if (resp == NULL)
4369                 return NULL;
4370
4371         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4372         len = p2p_buf_add_ie_hdr(resp);
4373         p2p_buf_add_status(resp, status);
4374         if (noa) {
4375                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4376                 wpabuf_put_le16(resp, noa_len);
4377                 wpabuf_put_data(resp, noa, noa_len);
4378         } else
4379                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4380         p2p_buf_update_ie_hdr(resp, len);
4381
4382         return resp;
4383 }
4384
4385
4386 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4387                                      const u8 *sa, const u8 *data, size_t len,
4388                                      int rx_freq)
4389 {
4390         struct p2p_message msg;
4391         u8 status;
4392         struct wpabuf *resp;
4393         size_t g;
4394         struct p2p_group *group = NULL;
4395         int parsed = 0;
4396         u8 noa[50];
4397         int noa_len;
4398
4399         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4400
4401         for (g = 0; g < p2p->num_groups; g++) {
4402                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4403                               ETH_ALEN) == 0) {
4404                         group = p2p->groups[g];
4405                         break;
4406                 }
4407         }
4408         if (group == NULL) {
4409                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4410                         MACSTR, MAC2STR(da));
4411                 return;
4412         }
4413
4414         if (p2p_parse(data, len, &msg) < 0) {
4415                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4416                 status = P2P_SC_FAIL_INVALID_PARAMS;
4417                 goto fail;
4418         }
4419         parsed = 1;
4420
4421         if (msg.noa == NULL) {
4422                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4423                 status = P2P_SC_FAIL_INVALID_PARAMS;
4424                 goto fail;
4425         }
4426
4427         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4428
4429 fail:
4430         if (p2p->cfg->get_noa)
4431                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4432                                             sizeof(noa));
4433         else
4434                 noa_len = -1;
4435         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4436                                        noa_len > 0 ? noa_len : 0,
4437                                        msg.dialog_token);
4438         if (parsed)
4439                 p2p_parse_free(&msg);
4440         if (resp == NULL)
4441                 return;
4442
4443         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4444         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4445                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4446                 p2p_dbg(p2p, "Failed to send Action frame");
4447         }
4448         wpabuf_free(resp);
4449 }
4450
4451
4452 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4453                                       const u8 *sa, const u8 *data, size_t len)
4454 {
4455         struct p2p_message msg;
4456
4457         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4458
4459         if (p2p_parse(data, len, &msg) < 0) {
4460                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4461                 return;
4462         }
4463
4464         if (msg.status == NULL || msg.noa == NULL) {
4465                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4466                 p2p_parse_free(&msg);
4467                 return;
4468         }
4469
4470         if (p2p->cfg->presence_resp) {
4471                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4472                                         msg.noa, msg.noa_len);
4473         }
4474
4475         if (*msg.status) {
4476                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4477                         *msg.status);
4478                 p2p_parse_free(&msg);
4479                 return;
4480         }
4481
4482         p2p_dbg(p2p, "P2P Presence Request was accepted");
4483         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4484                     msg.noa, msg.noa_len);
4485         /* TODO: process NoA */
4486         p2p_parse_free(&msg);
4487 }
4488
4489
4490 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4491 {
4492         struct p2p_data *p2p = eloop_ctx;
4493
4494         if (p2p->ext_listen_interval) {
4495                 /* Schedule next extended listen timeout */
4496                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4497                                        p2p->ext_listen_interval_usec,
4498                                        p2p_ext_listen_timeout, p2p, NULL);
4499         }
4500
4501         if ((p2p->cfg->is_p2p_in_progress &&
4502              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4503             (p2p->pending_action_state == P2P_PENDING_PD &&
4504              p2p->pd_retries > 0)) {
4505                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4506                         p2p_state_txt(p2p->state));
4507                 return;
4508         }
4509
4510         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4511                 /*
4512                  * This should not really happen, but it looks like the Listen
4513                  * command may fail is something else (e.g., a scan) was
4514                  * running at an inconvenient time. As a workaround, allow new
4515                  * Extended Listen operation to be started.
4516                  */
4517                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4518                 p2p->ext_listen_only = 0;
4519                 p2p_set_state(p2p, P2P_IDLE);
4520         }
4521
4522         if (p2p->state != P2P_IDLE) {
4523                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4524                 return;
4525         }
4526
4527         p2p_dbg(p2p, "Extended Listen timeout");
4528         p2p->ext_listen_only = 1;
4529         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4530                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4531                 p2p->ext_listen_only = 0;
4532         }
4533 }
4534
4535
4536 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4537                    unsigned int interval)
4538 {
4539         if (period > 65535 || interval > 65535 || period > interval ||
4540             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4541                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4542                         period, interval);
4543                 return -1;
4544         }
4545
4546         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4547
4548         if (interval == 0) {
4549                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4550                 p2p->ext_listen_period = 0;
4551                 p2p->ext_listen_interval = 0;
4552                 return 0;
4553         }
4554
4555         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4556                 period, interval);
4557         p2p->ext_listen_period = period;
4558         p2p->ext_listen_interval = interval;
4559         p2p->ext_listen_interval_sec = interval / 1000;
4560         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4561
4562         eloop_register_timeout(p2p->ext_listen_interval_sec,
4563                                p2p->ext_listen_interval_usec,
4564                                p2p_ext_listen_timeout, p2p, NULL);
4565
4566         return 0;
4567 }
4568
4569
4570 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4571                       const u8 *ie, size_t ie_len)
4572 {
4573         struct p2p_message msg;
4574
4575         if (bssid == NULL || ie == NULL)
4576                 return;
4577
4578         os_memset(&msg, 0, sizeof(msg));
4579         if (p2p_parse_ies(ie, ie_len, &msg))
4580                 return;
4581         if (msg.minor_reason_code == NULL) {
4582                 p2p_parse_free(&msg);
4583                 return;
4584         }
4585
4586         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4587                 " reason_code=%u minor_reason_code=%u",
4588                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4589
4590         p2p_parse_free(&msg);
4591 }
4592
4593
4594 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4595                         const u8 *ie, size_t ie_len)
4596 {
4597         struct p2p_message msg;
4598
4599         if (bssid == NULL || ie == NULL)
4600                 return;
4601
4602         os_memset(&msg, 0, sizeof(msg));
4603         if (p2p_parse_ies(ie, ie_len, &msg))
4604                 return;
4605         if (msg.minor_reason_code == NULL) {
4606                 p2p_parse_free(&msg);
4607                 return;
4608         }
4609
4610         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4611                 " reason_code=%u minor_reason_code=%u",
4612                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4613
4614         p2p_parse_free(&msg);
4615 }
4616
4617
4618 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4619 {
4620         if (enabled) {
4621                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4622                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4623         } else {
4624                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4625                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4626         }
4627 }
4628
4629
4630 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4631                                  u8 *op_channel)
4632 {
4633         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4634 }
4635
4636
4637 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4638                            u8 forced)
4639 {
4640         if (p2p_channel_to_freq(reg_class, channel) < 0)
4641                 return -1;
4642
4643         /*
4644          * Listen channel was set in configuration or set by control interface;
4645          * cannot override it.
4646          */
4647         if (p2p->cfg->channel_forced && forced == 0) {
4648                 p2p_dbg(p2p,
4649                         "Listen channel was previously configured - do not override based on optimization");
4650                 return -1;
4651         }
4652
4653         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4654                 reg_class, channel);
4655
4656         if (p2p->state == P2P_IDLE) {
4657                 p2p->cfg->reg_class = reg_class;
4658                 p2p->cfg->channel = channel;
4659                 p2p->cfg->channel_forced = forced;
4660         } else {
4661                 p2p_dbg(p2p, "Defer setting listen channel");
4662                 p2p->pending_reg_class = reg_class;
4663                 p2p->pending_channel = channel;
4664                 p2p->pending_channel_forced = forced;
4665         }
4666
4667         return 0;
4668 }
4669
4670
4671 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4672 {
4673         return p2p->cfg->channel;
4674 }
4675
4676
4677 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4678 {
4679         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4680         if (postfix == NULL) {
4681                 p2p->cfg->ssid_postfix_len = 0;
4682                 return 0;
4683         }
4684         if (len > sizeof(p2p->cfg->ssid_postfix))
4685                 return -1;
4686         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4687         p2p->cfg->ssid_postfix_len = len;
4688         return 0;
4689 }
4690
4691
4692 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4693                          int cfg_op_channel)
4694 {
4695         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4696                 return -1;
4697
4698         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4699                 op_reg_class, op_channel);
4700         p2p->cfg->op_reg_class = op_reg_class;
4701         p2p->cfg->op_channel = op_channel;
4702         p2p->cfg->cfg_op_channel = cfg_op_channel;
4703         return 0;
4704 }
4705
4706
4707 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4708                       const struct p2p_channel *pref_chan)
4709 {
4710         struct p2p_channel *n;
4711
4712         if (pref_chan) {
4713                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4714                 if (n == NULL)
4715                         return -1;
4716                 os_memcpy(n, pref_chan,
4717                           num_pref_chan * sizeof(struct p2p_channel));
4718         } else
4719                 n = NULL;
4720
4721         os_free(p2p->cfg->pref_chan);
4722         p2p->cfg->pref_chan = n;
4723         p2p->cfg->num_pref_chan = num_pref_chan;
4724
4725         return 0;
4726 }
4727
4728
4729 int p2p_set_no_go_freq(struct p2p_data *p2p,
4730                        const struct wpa_freq_range_list *list)
4731 {
4732         struct wpa_freq_range *tmp;
4733
4734         if (list == NULL || list->num == 0) {
4735                 os_free(p2p->no_go_freq.range);
4736                 p2p->no_go_freq.range = NULL;
4737                 p2p->no_go_freq.num = 0;
4738                 return 0;
4739         }
4740
4741         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4742         if (tmp == NULL)
4743                 return -1;
4744         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4745         os_free(p2p->no_go_freq.range);
4746         p2p->no_go_freq.range = tmp;
4747         p2p->no_go_freq.num = list->num;
4748         p2p_dbg(p2p, "Updated no GO chan list");
4749
4750         return 0;
4751 }
4752
4753
4754 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4755                            u8 *iface_addr)
4756 {
4757         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4758         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4759                 return -1;
4760         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4761         return 0;
4762 }
4763
4764
4765 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4766                            u8 *dev_addr)
4767 {
4768         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4769         if (dev == NULL)
4770                 return -1;
4771         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4772         return 0;
4773 }
4774
4775
4776 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4777 {
4778         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4779         if (is_zero_ether_addr(p2p->peer_filter))
4780                 p2p_dbg(p2p, "Disable peer filter");
4781         else
4782                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4783                         MAC2STR(p2p->peer_filter));
4784 }
4785
4786
4787 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4788 {
4789         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4790         if (p2p->cross_connect == enabled)
4791                 return;
4792         p2p->cross_connect = enabled;
4793         /* TODO: may need to tear down any action group where we are GO(?) */
4794 }
4795
4796
4797 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4798 {
4799         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4800         if (dev == NULL)
4801                 return -1;
4802         if (dev->oper_freq <= 0)
4803                 return -1;
4804         return dev->oper_freq;
4805 }
4806
4807
4808 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4809 {
4810         p2p_dbg(p2p, "Intra BSS distribution %s",
4811                 enabled ? "enabled" : "disabled");
4812         p2p->cfg->p2p_intra_bss = enabled;
4813 }
4814
4815
4816 void p2p_update_channel_list(struct p2p_data *p2p,
4817                              const struct p2p_channels *chan,
4818                              const struct p2p_channels *cli_chan)
4819 {
4820         p2p_dbg(p2p, "Update channel list");
4821         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4822         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4823         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4824                   sizeof(struct p2p_channels));
4825         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4826 }
4827
4828
4829 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4830                     const u8 *src, const u8 *bssid, const u8 *buf,
4831                     size_t len, unsigned int wait_time)
4832 {
4833         if (p2p->p2p_scan_running) {
4834                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4835                 if (p2p->after_scan_tx) {
4836                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4837                         os_free(p2p->after_scan_tx);
4838                 }
4839                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4840                                                len);
4841                 if (p2p->after_scan_tx == NULL)
4842                         return -1;
4843                 p2p->after_scan_tx->freq = freq;
4844                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4845                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4846                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4847                 p2p->after_scan_tx->len = len;
4848                 p2p->after_scan_tx->wait_time = wait_time;
4849                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4850                 return 0;
4851         }
4852
4853         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4854                                      buf, len, wait_time);
4855 }
4856
4857
4858 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4859                            int freq_overall)
4860 {
4861         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4862                 freq_24, freq_5, freq_overall);
4863         p2p->best_freq_24 = freq_24;
4864         p2p->best_freq_5 = freq_5;
4865         p2p->best_freq_overall = freq_overall;
4866 }
4867
4868
4869 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4870 {
4871         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4872         p2p->own_freq_preference = freq;
4873 }
4874
4875
4876 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4877 {
4878         if (p2p == NULL || p2p->go_neg_peer == NULL)
4879                 return NULL;
4880         return p2p->go_neg_peer->info.p2p_device_addr;
4881 }
4882
4883
4884 const struct p2p_peer_info *
4885 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4886 {
4887         struct p2p_device *dev;
4888
4889         if (addr) {
4890                 dev = p2p_get_device(p2p, addr);
4891                 if (!dev)
4892                         return NULL;
4893
4894                 if (!next) {
4895                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4896                                 return NULL;
4897
4898                         return &dev->info;
4899                 } else {
4900                         do {
4901                                 dev = dl_list_first(&dev->list,
4902                                                     struct p2p_device,
4903                                                     list);
4904                                 if (!dev || &dev->list == &p2p->devices)
4905                                         return NULL;
4906                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4907                 }
4908         } else {
4909                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4910                 if (!dev)
4911                         return NULL;
4912                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4913                         dev = dl_list_first(&dev->list,
4914                                             struct p2p_device,
4915                                             list);
4916                         if (!dev || &dev->list == &p2p->devices)
4917                                 return NULL;
4918                 }
4919         }
4920
4921         return &dev->info;
4922 }
4923
4924
4925 int p2p_in_progress(struct p2p_data *p2p)
4926 {
4927         if (p2p == NULL)
4928                 return 0;
4929         if (p2p->state == P2P_SEARCH)
4930                 return 2;
4931         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4932 }
4933
4934
4935 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4936                             u8 client_timeout)
4937 {
4938         if (p2p) {
4939                 p2p->go_timeout = go_timeout;
4940                 p2p->client_timeout = client_timeout;
4941         }
4942 }
4943
4944
4945 #ifdef CONFIG_WIFI_DISPLAY
4946
4947 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4948 {
4949         size_t g;
4950         struct p2p_group *group;
4951
4952         for (g = 0; g < p2p->num_groups; g++) {
4953                 group = p2p->groups[g];
4954                 p2p_group_force_beacon_update_ies(group);
4955         }
4956 }
4957
4958
4959 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4960 {
4961         wpabuf_free(p2p->wfd_ie_beacon);
4962         p2p->wfd_ie_beacon = ie;
4963         p2p_update_wfd_ie_groups(p2p);
4964         return 0;
4965 }
4966
4967
4968 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4969 {
4970         wpabuf_free(p2p->wfd_ie_probe_req);
4971         p2p->wfd_ie_probe_req = ie;
4972         return 0;
4973 }
4974
4975
4976 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4977 {
4978         wpabuf_free(p2p->wfd_ie_probe_resp);
4979         p2p->wfd_ie_probe_resp = ie;
4980         p2p_update_wfd_ie_groups(p2p);
4981         return 0;
4982 }
4983
4984
4985 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4986 {
4987         wpabuf_free(p2p->wfd_ie_assoc_req);
4988         p2p->wfd_ie_assoc_req = ie;
4989         return 0;
4990 }
4991
4992
4993 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4994 {
4995         wpabuf_free(p2p->wfd_ie_invitation);
4996         p2p->wfd_ie_invitation = ie;
4997         return 0;
4998 }
4999
5000
5001 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5002 {
5003         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5004         p2p->wfd_ie_prov_disc_req = ie;
5005         return 0;
5006 }
5007
5008
5009 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5010 {
5011         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5012         p2p->wfd_ie_prov_disc_resp = ie;
5013         return 0;
5014 }
5015
5016
5017 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5018 {
5019         wpabuf_free(p2p->wfd_ie_go_neg);
5020         p2p->wfd_ie_go_neg = ie;
5021         return 0;
5022 }
5023
5024
5025 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5026 {
5027         wpabuf_free(p2p->wfd_dev_info);
5028         if (elem) {
5029                 p2p->wfd_dev_info = wpabuf_dup(elem);
5030                 if (p2p->wfd_dev_info == NULL)
5031                         return -1;
5032         } else
5033                 p2p->wfd_dev_info = NULL;
5034
5035         return 0;
5036 }
5037
5038
5039 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5040 {
5041         wpabuf_free(p2p->wfd_assoc_bssid);
5042         if (elem) {
5043                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5044                 if (p2p->wfd_assoc_bssid == NULL)
5045                         return -1;
5046         } else
5047                 p2p->wfd_assoc_bssid = NULL;
5048
5049         return 0;
5050 }
5051
5052
5053 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5054                                   const struct wpabuf *elem)
5055 {
5056         wpabuf_free(p2p->wfd_coupled_sink_info);
5057         if (elem) {
5058                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5059                 if (p2p->wfd_coupled_sink_info == NULL)
5060                         return -1;
5061         } else
5062                 p2p->wfd_coupled_sink_info = NULL;
5063
5064         return 0;
5065 }
5066
5067 #endif /* CONFIG_WIFI_DISPLAY */
5068
5069
5070 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5071                      int max_disc_tu)
5072 {
5073         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5074                 return -1;
5075
5076         p2p->min_disc_int = min_disc_int;
5077         p2p->max_disc_int = max_disc_int;
5078         p2p->max_disc_tu = max_disc_tu;
5079         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5080                 min_disc_int, max_disc_int, max_disc_tu);
5081
5082         return 0;
5083 }
5084
5085
5086 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5087 {
5088         va_list ap;
5089         char buf[500];
5090
5091         if (!p2p->cfg->debug_print)
5092                 return;
5093
5094         va_start(ap, fmt);
5095         vsnprintf(buf, sizeof(buf), fmt, ap);
5096         buf[sizeof(buf) - 1] = '\0';
5097         va_end(ap);
5098         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5099 }
5100
5101
5102 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5103 {
5104         va_list ap;
5105         char buf[500];
5106
5107         if (!p2p->cfg->debug_print)
5108                 return;
5109
5110         va_start(ap, fmt);
5111         vsnprintf(buf, sizeof(buf), fmt, ap);
5112         buf[sizeof(buf) - 1] = '\0';
5113         va_end(ap);
5114         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5115 }
5116
5117
5118 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5119 {
5120         va_list ap;
5121         char buf[500];
5122
5123         if (!p2p->cfg->debug_print)
5124                 return;
5125
5126         va_start(ap, fmt);
5127         vsnprintf(buf, sizeof(buf), fmt, ap);
5128         buf[sizeof(buf) - 1] = '\0';
5129         va_end(ap);
5130         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5131 }
5132
5133
5134 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5135                              void (*peer_callback)(struct p2p_peer_info *peer,
5136                                                    void *user_data),
5137                              void *user_data)
5138 {
5139         struct p2p_device *dev, *n;
5140
5141         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5142                 peer_callback(&dev->info, user_data);
5143         }
5144 }
5145
5146
5147 #ifdef CONFIG_WPS_NFC
5148
5149 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5150                                               int client_freq,
5151                                               const u8 *go_dev_addr,
5152                                               const u8 *ssid, size_t ssid_len)
5153 {
5154         struct wpabuf *buf;
5155         u8 op_class, channel;
5156         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5157
5158         buf = wpabuf_alloc(1000);
5159         if (buf == NULL)
5160                 return NULL;
5161
5162         op_class = p2p->cfg->reg_class;
5163         channel = p2p->cfg->channel;
5164
5165         p2p_buf_add_capability(buf, p2p->dev_capab &
5166                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5167         p2p_buf_add_device_info(buf, p2p, NULL);
5168
5169         if (p2p->num_groups > 0) {
5170                 int freq = p2p_group_get_freq(p2p->groups[0]);
5171                 role = P2P_GO_IN_A_GROUP;
5172                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5173                         p2p_dbg(p2p,
5174                                 "Unknown GO operating frequency %d MHz for NFC handover",
5175                                 freq);
5176                         wpabuf_free(buf);
5177                         return NULL;
5178                 }
5179         } else if (client_freq > 0) {
5180                 role = P2P_CLIENT_IN_A_GROUP;
5181                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5182                         p2p_dbg(p2p,
5183                                 "Unknown client operating frequency %d MHz for NFC handover",
5184                                 client_freq);
5185                         wpabuf_free(buf);
5186                         return NULL;
5187                 }
5188         }
5189
5190         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5191                                        channel, role);
5192
5193         if (p2p->num_groups > 0) {
5194                 /* Limit number of clients to avoid very long message */
5195                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5196                 p2p_group_buf_add_id(p2p->groups[0], buf);
5197         } else if (client_freq > 0 &&
5198                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5199                    ssid && ssid_len > 0) {
5200                 /*
5201                  * Add the optional P2P Group ID to indicate in which group this
5202                  * device is a P2P Client.
5203                  */
5204                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5205         }
5206
5207         return buf;
5208 }
5209
5210
5211 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5212                                            int client_freq,
5213                                            const u8 *go_dev_addr,
5214                                            const u8 *ssid, size_t ssid_len)
5215 {
5216         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5217                                       ssid_len);
5218 }
5219
5220
5221 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5222                                            int client_freq,
5223                                            const u8 *go_dev_addr,
5224                                            const u8 *ssid, size_t ssid_len)
5225 {
5226         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5227                                       ssid_len);
5228 }
5229
5230
5231 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5232                                         struct p2p_nfc_params *params)
5233 {
5234         struct p2p_message msg;
5235         struct p2p_device *dev;
5236         const u8 *p2p_dev_addr;
5237         int freq;
5238         enum p2p_role_indication role;
5239
5240         params->next_step = NO_ACTION;
5241
5242         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5243                                    params->p2p_attr, params->p2p_len, &msg)) {
5244                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5245                 p2p_parse_free(&msg);
5246                 return -1;
5247         }
5248
5249         if (msg.p2p_device_addr)
5250                 p2p_dev_addr = msg.p2p_device_addr;
5251         else if (msg.device_id)
5252                 p2p_dev_addr = msg.device_id;
5253         else {
5254                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5255                 p2p_parse_free(&msg);
5256                 return -1;
5257         }
5258
5259         if (msg.oob_dev_password) {
5260                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5261                           msg.oob_dev_password_len);
5262                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5263         }
5264
5265         dev = p2p_create_device(p2p, p2p_dev_addr);
5266         if (dev == NULL) {
5267                 p2p_parse_free(&msg);
5268                 return -1;
5269         }
5270
5271         params->peer = &dev->info;
5272
5273         os_get_reltime(&dev->last_seen);
5274         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5275         p2p_copy_wps_info(p2p, dev, 0, &msg);
5276
5277         if (!msg.oob_go_neg_channel) {
5278                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5279                 return -1;
5280         }
5281
5282         if (msg.oob_go_neg_channel[3] == 0 &&
5283             msg.oob_go_neg_channel[4] == 0)
5284                 freq = 0;
5285         else
5286                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5287                                            msg.oob_go_neg_channel[4]);
5288         if (freq < 0) {
5289                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5290                 return -1;
5291         }
5292         role = msg.oob_go_neg_channel[5];
5293
5294         if (role == P2P_GO_IN_A_GROUP) {
5295                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5296                 params->go_freq = freq;
5297         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5298                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5299                         freq);
5300                 params->go_freq = freq;
5301         } else
5302                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5303         dev->oob_go_neg_freq = freq;
5304
5305         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5306                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5307                                            p2p->cfg->channel);
5308                 if (freq < 0) {
5309                         p2p_dbg(p2p, "Own listen channel not known");
5310                         return -1;
5311                 }
5312                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5313                 dev->oob_go_neg_freq = freq;
5314         }
5315
5316         if (msg.group_id) {
5317                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5318                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5319                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5320                           params->go_ssid_len);
5321         }
5322
5323         if (dev->flags & P2P_DEV_USER_REJECTED) {
5324                 p2p_dbg(p2p, "Do not report rejected device");
5325                 p2p_parse_free(&msg);
5326                 return 0;
5327         }
5328
5329         if (!(dev->flags & P2P_DEV_REPORTED)) {
5330                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5331                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5332                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5333         }
5334         p2p_parse_free(&msg);
5335
5336         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5337                 params->next_step = BOTH_GO;
5338         else if (role == P2P_GO_IN_A_GROUP)
5339                 params->next_step = JOIN_GROUP;
5340         else if (role == P2P_CLIENT_IN_A_GROUP) {
5341                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5342                 params->next_step = PEER_CLIENT;
5343         } else if (p2p->num_groups > 0)
5344                 params->next_step = AUTH_JOIN;
5345         else if (params->sel)
5346                 params->next_step = INIT_GO_NEG;
5347         else
5348                 params->next_step = RESP_GO_NEG;
5349
5350         return 0;
5351 }
5352
5353
5354 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5355                                       int go_intent,
5356                                       const u8 *own_interface_addr)
5357 {
5358
5359         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5360         if (dev_pw_id == 0) {
5361                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5362                 return;
5363         }
5364
5365         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5366                 dev_pw_id);
5367
5368         p2p->go_intent = go_intent;
5369         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5370 }
5371
5372 #endif /* CONFIG_WPS_NFC */
5373
5374
5375 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5376 {
5377         if (len < 8 || len > 63)
5378                 return -1;
5379         p2p->cfg->passphrase_len = len;
5380         return 0;
5381 }
5382
5383
5384 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5385 {
5386         p2p->vendor_elem = vendor_elem;
5387 }
5388
5389
5390 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5391 {
5392         struct p2p_data *p2p = eloop_ctx;
5393
5394         p2p_dbg(p2p,
5395                 "Timeout on waiting peer to become ready for GO Negotiation");
5396         p2p_go_neg_failed(p2p, -1);
5397 }