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 channel, op_class;
2262
2263         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2264             ParseFailed) {
2265                 /* Ignore invalid Probe Request frames */
2266                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2267                 return P2P_PREQ_MALFORMED;
2268         }
2269
2270         if (elems.p2p == NULL) {
2271                 /* not a P2P probe - ignore it */
2272                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2273                 return P2P_PREQ_NOT_P2P;
2274         }
2275
2276         if (dst && !is_broadcast_ether_addr(dst) &&
2277             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2278                 /* Not sent to the broadcast address or our P2P Device Address
2279                  */
2280                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2281                         MAC2STR(dst));
2282                 return P2P_PREQ_NOT_PROCESSED;
2283         }
2284
2285         if (bssid && !is_broadcast_ether_addr(bssid)) {
2286                 /* Not sent to the Wildcard BSSID */
2287                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2288                         MAC2STR(bssid));
2289                 return P2P_PREQ_NOT_PROCESSED;
2290         }
2291
2292         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2293             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2294             0) {
2295                 /* not using P2P Wildcard SSID - ignore */
2296                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2297                 return P2P_PREQ_NOT_PROCESSED;
2298         }
2299
2300         if (supp_rates_11b_only(&elems)) {
2301                 /* Indicates support for 11b rates only */
2302                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2303                 return P2P_PREQ_NOT_P2P;
2304         }
2305
2306         os_memset(&msg, 0, sizeof(msg));
2307         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2308                 /* Could not parse P2P attributes */
2309                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2310                 return P2P_PREQ_NOT_P2P;
2311         }
2312
2313         if (msg.service_hash && msg.service_hash_count) {
2314                 const u8 *hash = msg.service_hash;
2315                 u8 i;
2316                 int p2ps_svc_found = 0;
2317
2318                 for (i = 0; i < msg.service_hash_count; i++) {
2319                         if (p2p_service_find_asp(p2p, hash)) {
2320                                 p2p_dbg(p2p, "Service Hash match found: "
2321                                         MACSTR, MAC2STR(hash));
2322                                 p2ps_svc_found = 1;
2323                                 break;
2324                         }
2325                         hash += P2PS_HASH_LEN;
2326                 }
2327
2328                 /* Probed hash unknown */
2329                 if (!p2ps_svc_found) {
2330                         p2p_dbg(p2p, "No Service Hash match found");
2331                         p2p_parse_free(&msg);
2332                         return P2P_PREQ_NOT_PROCESSED;
2333                 }
2334         } else {
2335                 /* This is not a P2PS Probe Request */
2336                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2337
2338                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2339                         /* not in Listen state - ignore Probe Request */
2340                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2341                                 p2p->in_listen, p2p->drv_in_listen);
2342                         p2p_parse_free(&msg);
2343                         return P2P_PREQ_NOT_LISTEN;
2344                 }
2345         }
2346
2347         if (msg.device_id &&
2348             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2349                 /* Device ID did not match */
2350                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2351                         MAC2STR(msg.device_id));
2352                 p2p_parse_free(&msg);
2353                 return P2P_PREQ_NOT_PROCESSED;
2354         }
2355
2356         /* Check Requested Device Type match */
2357         if (msg.wps_attributes &&
2358             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2359                 /* No match with Requested Device Type */
2360                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2361                 p2p_parse_free(&msg);
2362                 return P2P_PREQ_NOT_PROCESSED;
2363         }
2364
2365         if (!p2p->cfg->send_probe_resp) {
2366                 /* Response generated elsewhere */
2367                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2368                 p2p_parse_free(&msg);
2369                 return P2P_PREQ_NOT_PROCESSED;
2370         }
2371
2372         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2373
2374         /*
2375          * We do not really have a specific BSS that this frame is advertising,
2376          * so build a frame that has some information in valid format. This is
2377          * really only used for discovery purposes, not to learn exact BSS
2378          * parameters.
2379          */
2380         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2381                                        msg.service_hash_count);
2382         p2p_parse_free(&msg);
2383         if (ies == NULL)
2384                 return P2P_PREQ_NOT_PROCESSED;
2385
2386         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2387         if (buf == NULL) {
2388                 wpabuf_free(ies);
2389                 return P2P_PREQ_NOT_PROCESSED;
2390         }
2391
2392         resp = NULL;
2393         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2394
2395         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2396                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2397         os_memcpy(resp->da, addr, ETH_ALEN);
2398         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2399         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2400         resp->u.probe_resp.beacon_int = host_to_le16(100);
2401         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2402         resp->u.probe_resp.capab_info =
2403                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2404                              WLAN_CAPABILITY_PRIVACY |
2405                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2406
2407         wpabuf_put_u8(buf, WLAN_EID_SSID);
2408         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2409         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2410
2411         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2412         wpabuf_put_u8(buf, 8);
2413         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2414         wpabuf_put_u8(buf, 90 / 5);
2415         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2416         wpabuf_put_u8(buf, 180 / 5);
2417         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2418         wpabuf_put_u8(buf, 360 / 5);
2419         wpabuf_put_u8(buf, 480 / 5);
2420         wpabuf_put_u8(buf, 540 / 5);
2421
2422         if (!rx_freq) {
2423                 channel = p2p->cfg->channel;
2424         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2425                 wpabuf_free(ies);
2426                 wpabuf_free(buf);
2427                 return P2P_PREQ_NOT_PROCESSED;
2428         }
2429
2430         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2431         wpabuf_put_u8(buf, 1);
2432         wpabuf_put_u8(buf, channel);
2433
2434         wpabuf_put_buf(buf, ies);
2435         wpabuf_free(ies);
2436
2437         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2438
2439         wpabuf_free(buf);
2440
2441         return P2P_PREQ_PROCESSED;
2442 }
2443
2444
2445 enum p2p_probe_req_status
2446 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2447                  const u8 *bssid, const u8 *ie, size_t ie_len,
2448                  unsigned int rx_freq)
2449 {
2450         enum p2p_probe_req_status res;
2451
2452         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2453
2454         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2455         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2456                 return res;
2457
2458         /*
2459          * Activate a pending GO Negotiation/Invite flow if a received Probe
2460          * Request frame is from an expected peer. Some devices may share the
2461          * same address for P2P and non-P2P STA running simultaneously. The
2462          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2463          * return values verified above ensure we are handling a Probe Request
2464          * frame from a P2P peer.
2465          */
2466         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2467             p2p->go_neg_peer &&
2468             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2469             == 0 &&
2470             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2471                 /* Received a Probe Request from GO Negotiation peer */
2472                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2473                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2474                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2475                 return res;
2476         }
2477
2478         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2479             p2p->invite_peer &&
2480             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2481             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2482             == 0) {
2483                 /* Received a Probe Request from Invite peer */
2484                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2485                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2486                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2487                 return res;
2488         }
2489
2490         return res;
2491 }
2492
2493
2494 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2495                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2496 {
2497         struct wpabuf *tmp;
2498         u8 *lpos;
2499         size_t tmplen;
2500         int res;
2501         u8 group_capab;
2502         struct p2p_message msg;
2503
2504         if (p2p_ie == NULL)
2505                 return 0; /* WLAN AP is not a P2P manager */
2506
2507         os_memset(&msg, 0, sizeof(msg));
2508         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2509                 return 0;
2510
2511         p2p_dbg(p2p, "BSS P2P manageability %s",
2512                 msg.manageability ? "enabled" : "disabled");
2513
2514         if (!msg.manageability)
2515                 return 0;
2516
2517         /*
2518          * (Re)Association Request - P2P IE
2519          * P2P Capability attribute (shall be present)
2520          * P2P Interface attribute (present if concurrent device and
2521          *      P2P Management is enabled)
2522          */
2523         tmp = wpabuf_alloc(200);
2524         if (tmp == NULL)
2525                 return -1;
2526
2527         lpos = p2p_buf_add_ie_hdr(tmp);
2528         group_capab = 0;
2529         if (p2p->num_groups > 0) {
2530                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2531                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2532                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2533                     p2p->cross_connect)
2534                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2535         }
2536         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2537         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2538             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2539                 p2p_buf_add_p2p_interface(tmp, p2p);
2540         p2p_buf_update_ie_hdr(tmp, lpos);
2541
2542         tmplen = wpabuf_len(tmp);
2543         if (tmplen > len)
2544                 res = -1;
2545         else {
2546                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2547                 res = tmplen;
2548         }
2549         wpabuf_free(tmp);
2550
2551         return res;
2552 }
2553
2554
2555 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2556                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2557 {
2558         struct wpabuf *tmp;
2559         u8 *lpos;
2560         struct p2p_device *peer;
2561         size_t tmplen;
2562         int res;
2563         size_t extra = 0;
2564
2565         if (!p2p_group)
2566                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2567
2568 #ifdef CONFIG_WIFI_DISPLAY
2569         if (p2p->wfd_ie_assoc_req)
2570                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2571 #endif /* CONFIG_WIFI_DISPLAY */
2572
2573         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2574                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2575
2576         /*
2577          * (Re)Association Request - P2P IE
2578          * P2P Capability attribute (shall be present)
2579          * Extended Listen Timing (may be present)
2580          * P2P Device Info attribute (shall be present)
2581          */
2582         tmp = wpabuf_alloc(200 + extra);
2583         if (tmp == NULL)
2584                 return -1;
2585
2586 #ifdef CONFIG_WIFI_DISPLAY
2587         if (p2p->wfd_ie_assoc_req)
2588                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2589 #endif /* CONFIG_WIFI_DISPLAY */
2590
2591         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2592                 wpabuf_put_buf(tmp,
2593                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2594
2595         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2596
2597         lpos = p2p_buf_add_ie_hdr(tmp);
2598         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2599         if (p2p->ext_listen_interval)
2600                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2601                                               p2p->ext_listen_interval);
2602         p2p_buf_add_device_info(tmp, p2p, peer);
2603         p2p_buf_update_ie_hdr(tmp, lpos);
2604
2605         tmplen = wpabuf_len(tmp);
2606         if (tmplen > len)
2607                 res = -1;
2608         else {
2609                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2610                 res = tmplen;
2611         }
2612         wpabuf_free(tmp);
2613
2614         return res;
2615 }
2616
2617
2618 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2619 {
2620         struct wpabuf *p2p_ie;
2621         int ret;
2622
2623         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2624         if (p2p_ie == NULL)
2625                 return 0;
2626
2627         ret = p2p_attr_text(p2p_ie, buf, end);
2628         wpabuf_free(p2p_ie);
2629         return ret;
2630 }
2631
2632
2633 struct p2ps_advertisement *
2634 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2635 {
2636         struct p2ps_advertisement *adv_data;
2637
2638         if (!p2p)
2639                 return NULL;
2640
2641         adv_data = p2p->p2ps_adv_list;
2642         while (adv_data) {
2643                 if (adv_data->id == adv_id)
2644                         return adv_data;
2645                 adv_data = adv_data->next;
2646         }
2647
2648         return NULL;
2649 }
2650
2651
2652 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2653 {
2654         struct p2ps_advertisement *adv_data;
2655         struct p2ps_advertisement **prior;
2656
2657         if (!p2p)
2658                 return -1;
2659
2660         adv_data = p2p->p2ps_adv_list;
2661         prior = &p2p->p2ps_adv_list;
2662         while (adv_data) {
2663                 if (adv_data->id == adv_id) {
2664                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2665                         *prior = adv_data->next;
2666                         os_free(adv_data);
2667                         return 0;
2668                 }
2669                 prior = &adv_data->next;
2670                 adv_data = adv_data->next;
2671         }
2672
2673         return -1;
2674 }
2675
2676
2677 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2678                         const char *adv_str, u8 svc_state, u16 config_methods,
2679                         const char *svc_info)
2680 {
2681         struct p2ps_advertisement *adv_data, *tmp, **prev;
2682         u8 buf[P2PS_HASH_LEN];
2683         size_t adv_data_len, adv_len, info_len = 0;
2684
2685         if (!p2p || !adv_str || !adv_str[0])
2686                 return -1;
2687
2688         if (!(config_methods & p2p->cfg->config_methods)) {
2689                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2690                         config_methods, p2p->cfg->config_methods);
2691                 return -1;
2692         }
2693
2694         if (!p2ps_gen_hash(p2p, adv_str, buf))
2695                 return -1;
2696
2697         if (svc_info)
2698                 info_len = os_strlen(svc_info);
2699         adv_len = os_strlen(adv_str);
2700         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2701                 info_len + 1;
2702
2703         adv_data = os_zalloc(adv_data_len);
2704         if (!adv_data)
2705                 return -1;
2706
2707         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2708         adv_data->id = adv_id;
2709         adv_data->state = svc_state;
2710         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2711         adv_data->auto_accept = (u8) auto_accept;
2712         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2713
2714         if (svc_info && info_len) {
2715                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2716                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2717         }
2718
2719         /*
2720          * Group Advertisements by service string. They do not need to be
2721          * sorted, but groups allow easier Probe Response instance grouping
2722          */
2723         tmp = p2p->p2ps_adv_list;
2724         prev = &p2p->p2ps_adv_list;
2725         while (tmp) {
2726                 if (tmp->id == adv_data->id) {
2727                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2728                                 os_free(adv_data);
2729                                 return -1;
2730                         }
2731                         adv_data->next = tmp->next;
2732                         *prev = adv_data;
2733                         os_free(tmp);
2734                         goto inserted;
2735                 } else {
2736                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2737                                 adv_data->next = tmp->next;
2738                                 tmp->next = adv_data;
2739                                 goto inserted;
2740                         }
2741                 }
2742                 prev = &tmp->next;
2743                 tmp = tmp->next;
2744         }
2745
2746         /* No svc_name match found */
2747         adv_data->next = p2p->p2ps_adv_list;
2748         p2p->p2ps_adv_list = adv_data;
2749
2750 inserted:
2751         p2p_dbg(p2p,
2752                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2753                 adv_id, adv_data->config_methods, svc_state, adv_str);
2754
2755         return 0;
2756 }
2757
2758
2759 void p2p_service_flush_asp(struct p2p_data *p2p)
2760 {
2761         struct p2ps_advertisement *adv, *prev;
2762
2763         if (!p2p)
2764                 return;
2765
2766         adv = p2p->p2ps_adv_list;
2767         while (adv) {
2768                 prev = adv;
2769                 adv = adv->next;
2770                 os_free(prev);
2771         }
2772
2773         p2p->p2ps_adv_list = NULL;
2774         p2p_dbg(p2p, "All ASP advertisements flushed");
2775 }
2776
2777
2778 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2779 {
2780         struct p2p_message msg;
2781
2782         os_memset(&msg, 0, sizeof(msg));
2783         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2784                 return -1;
2785
2786         if (msg.p2p_device_addr) {
2787                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2788                 return 0;
2789         } else if (msg.device_id) {
2790                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2791                 return 0;
2792         }
2793         return -1;
2794 }
2795
2796
2797 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2798 {
2799         struct wpabuf *p2p_ie;
2800         int ret;
2801
2802         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2803                                              P2P_IE_VENDOR_TYPE);
2804         if (p2p_ie == NULL)
2805                 return -1;
2806         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2807         wpabuf_free(p2p_ie);
2808         return ret;
2809 }
2810
2811
2812 static void p2p_clear_go_neg(struct p2p_data *p2p)
2813 {
2814         p2p->go_neg_peer = NULL;
2815         p2p_clear_timeout(p2p);
2816         p2p_set_state(p2p, P2P_IDLE);
2817 }
2818
2819
2820 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2821 {
2822         if (p2p->go_neg_peer == NULL) {
2823                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2824                 return; /* No pending Group Formation */
2825         }
2826
2827         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2828             0) {
2829                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2830                         MACSTR " (GO Negotiation peer " MACSTR ")",
2831                         MAC2STR(mac_addr),
2832                         MAC2STR(p2p->go_neg_peer->intended_addr));
2833                 return; /* Ignore unexpected peer address */
2834         }
2835
2836         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2837                 MAC2STR(mac_addr));
2838
2839         p2p_clear_go_neg(p2p);
2840 }
2841
2842
2843 void p2p_group_formation_failed(struct p2p_data *p2p)
2844 {
2845         if (p2p->go_neg_peer == NULL) {
2846                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2847                 return; /* No pending Group Formation */
2848         }
2849
2850         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2851                 MAC2STR(p2p->go_neg_peer->intended_addr));
2852
2853         p2p_clear_go_neg(p2p);
2854 }
2855
2856
2857 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2858 {
2859         struct p2p_data *p2p;
2860
2861         if (cfg->max_peers < 1 ||
2862             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2863                 return NULL;
2864
2865         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2866         if (p2p == NULL)
2867                 return NULL;
2868         p2p->cfg = (struct p2p_config *) (p2p + 1);
2869         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2870         if (cfg->dev_name)
2871                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2872         if (cfg->manufacturer)
2873                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2874         if (cfg->model_name)
2875                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2876         if (cfg->model_number)
2877                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2878         if (cfg->serial_number)
2879                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2880         if (cfg->pref_chan) {
2881                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2882                                                 sizeof(struct p2p_channel));
2883                 if (p2p->cfg->pref_chan) {
2884                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2885                                   cfg->num_pref_chan *
2886                                   sizeof(struct p2p_channel));
2887                 } else
2888                         p2p->cfg->num_pref_chan = 0;
2889         }
2890
2891         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2892
2893         p2p->min_disc_int = 1;
2894         p2p->max_disc_int = 3;
2895         p2p->max_disc_tu = -1;
2896
2897         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2898                 p2p->next_tie_breaker = 0;
2899         p2p->next_tie_breaker &= 0x01;
2900         if (cfg->sd_request)
2901                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2902         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2903         if (cfg->concurrent_operations)
2904                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2905         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2906
2907         dl_list_init(&p2p->devices);
2908
2909         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2910                                p2p_expiration_timeout, p2p, NULL);
2911
2912         p2p->go_timeout = 100;
2913         p2p->client_timeout = 20;
2914         p2p->num_p2p_sd_queries = 0;
2915
2916         p2p_dbg(p2p, "initialized");
2917         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2918         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2919
2920         return p2p;
2921 }
2922
2923
2924 void p2p_deinit(struct p2p_data *p2p)
2925 {
2926 #ifdef CONFIG_WIFI_DISPLAY
2927         wpabuf_free(p2p->wfd_ie_beacon);
2928         wpabuf_free(p2p->wfd_ie_probe_req);
2929         wpabuf_free(p2p->wfd_ie_probe_resp);
2930         wpabuf_free(p2p->wfd_ie_assoc_req);
2931         wpabuf_free(p2p->wfd_ie_invitation);
2932         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2933         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2934         wpabuf_free(p2p->wfd_ie_go_neg);
2935         wpabuf_free(p2p->wfd_dev_info);
2936         wpabuf_free(p2p->wfd_assoc_bssid);
2937         wpabuf_free(p2p->wfd_coupled_sink_info);
2938 #endif /* CONFIG_WIFI_DISPLAY */
2939
2940         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2941         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2942         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2943         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2944         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2945         p2p_flush(p2p);
2946         p2p_free_req_dev_types(p2p);
2947         os_free(p2p->cfg->dev_name);
2948         os_free(p2p->cfg->manufacturer);
2949         os_free(p2p->cfg->model_name);
2950         os_free(p2p->cfg->model_number);
2951         os_free(p2p->cfg->serial_number);
2952         os_free(p2p->cfg->pref_chan);
2953         os_free(p2p->groups);
2954         p2ps_prov_free(p2p);
2955         wpabuf_free(p2p->sd_resp);
2956         os_free(p2p->after_scan_tx);
2957         p2p_remove_wps_vendor_extensions(p2p);
2958         os_free(p2p->no_go_freq.range);
2959         p2p_service_flush_asp(p2p);
2960
2961         os_free(p2p);
2962 }
2963
2964
2965 void p2p_flush(struct p2p_data *p2p)
2966 {
2967         struct p2p_device *dev, *prev;
2968         p2p_stop_find(p2p);
2969         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2970                               list) {
2971                 dl_list_del(&dev->list);
2972                 p2p_device_free(p2p, dev);
2973         }
2974         p2p_free_sd_queries(p2p);
2975         os_free(p2p->after_scan_tx);
2976         p2p->after_scan_tx = NULL;
2977 }
2978
2979
2980 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2981 {
2982         struct p2p_device *dev;
2983
2984         dev = p2p_get_device(p2p, addr);
2985         if (dev == NULL)
2986                 return -1;
2987
2988         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2989
2990         if (p2p->go_neg_peer == dev) {
2991                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2992                 p2p->go_neg_peer = NULL;
2993         }
2994
2995         dev->wps_method = WPS_NOT_READY;
2996         dev->oob_pw_id = 0;
2997         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2998         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2999
3000         /* Check if after_scan_tx is for this peer. If so free it */
3001         if (p2p->after_scan_tx &&
3002             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3003                 os_free(p2p->after_scan_tx);
3004                 p2p->after_scan_tx = NULL;
3005         }
3006
3007         return 0;
3008 }
3009
3010
3011 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3012 {
3013         os_free(p2p->cfg->dev_name);
3014         if (dev_name) {
3015                 p2p->cfg->dev_name = os_strdup(dev_name);
3016                 if (p2p->cfg->dev_name == NULL)
3017                         return -1;
3018         } else
3019                 p2p->cfg->dev_name = NULL;
3020         return 0;
3021 }
3022
3023
3024 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3025 {
3026         os_free(p2p->cfg->manufacturer);
3027         p2p->cfg->manufacturer = NULL;
3028         if (manufacturer) {
3029                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3030                 if (p2p->cfg->manufacturer == NULL)
3031                         return -1;
3032         }
3033
3034         return 0;
3035 }
3036
3037
3038 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3039 {
3040         os_free(p2p->cfg->model_name);
3041         p2p->cfg->model_name = NULL;
3042         if (model_name) {
3043                 p2p->cfg->model_name = os_strdup(model_name);
3044                 if (p2p->cfg->model_name == NULL)
3045                         return -1;
3046         }
3047
3048         return 0;
3049 }
3050
3051
3052 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3053 {
3054         os_free(p2p->cfg->model_number);
3055         p2p->cfg->model_number = NULL;
3056         if (model_number) {
3057                 p2p->cfg->model_number = os_strdup(model_number);
3058                 if (p2p->cfg->model_number == NULL)
3059                         return -1;
3060         }
3061
3062         return 0;
3063 }
3064
3065
3066 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3067 {
3068         os_free(p2p->cfg->serial_number);
3069         p2p->cfg->serial_number = NULL;
3070         if (serial_number) {
3071                 p2p->cfg->serial_number = os_strdup(serial_number);
3072                 if (p2p->cfg->serial_number == NULL)
3073                         return -1;
3074         }
3075
3076         return 0;
3077 }
3078
3079
3080 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3081 {
3082         p2p->cfg->config_methods = config_methods;
3083 }
3084
3085
3086 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3087 {
3088         os_memcpy(p2p->cfg->uuid, uuid, 16);
3089 }
3090
3091
3092 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3093 {
3094         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3095         return 0;
3096 }
3097
3098
3099 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3100                           size_t num_dev_types)
3101 {
3102         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3103                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3104         p2p->cfg->num_sec_dev_types = num_dev_types;
3105         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3106         return 0;
3107 }
3108
3109
3110 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3111 {
3112         int i;
3113
3114         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3115                 wpabuf_free(p2p->wps_vendor_ext[i]);
3116                 p2p->wps_vendor_ext[i] = NULL;
3117         }
3118 }
3119
3120
3121 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3122                                  const struct wpabuf *vendor_ext)
3123 {
3124         int i;
3125
3126         if (vendor_ext == NULL)
3127                 return -1;
3128
3129         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3130                 if (p2p->wps_vendor_ext[i] == NULL)
3131                         break;
3132         }
3133         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3134                 return -1;
3135
3136         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3137         if (p2p->wps_vendor_ext[i] == NULL)
3138                 return -1;
3139
3140         return 0;
3141 }
3142
3143
3144 int p2p_set_country(struct p2p_data *p2p, const char *country)
3145 {
3146         os_memcpy(p2p->cfg->country, country, 3);
3147         return 0;
3148 }
3149
3150
3151 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3152 {
3153         if (dev->sd_pending_bcast_queries == 0) {
3154                 /* Initialize with total number of registered broadcast
3155                  * SD queries. */
3156                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3157         }
3158
3159         if (p2p_start_sd(p2p, dev) == 0)
3160                 return 1;
3161
3162         if (dev->req_config_methods &&
3163             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3164                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3165                         MACSTR " (config methods 0x%x)",
3166                         MAC2STR(dev->info.p2p_device_addr),
3167                         dev->req_config_methods);
3168                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3169                         return 1;
3170         }
3171
3172         return 0;
3173 }
3174
3175
3176 void p2p_continue_find(struct p2p_data *p2p)
3177 {
3178         struct p2p_device *dev;
3179         int found;
3180
3181         p2p_set_state(p2p, P2P_SEARCH);
3182
3183         /* Continue from the device following the last iteration */
3184         found = 0;
3185         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3186                 if (dev == p2p->last_p2p_find_oper) {
3187                         found = 1;
3188                         continue;
3189                 }
3190                 if (!found)
3191                         continue;
3192                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3193                         p2p->last_p2p_find_oper = dev;
3194                         return;
3195                 }
3196         }
3197
3198         /*
3199          * Wrap around to the beginning of the list and continue until the last
3200          * iteration device.
3201          */
3202         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3203                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3204                         p2p->last_p2p_find_oper = dev;
3205                         return;
3206                 }
3207                 if (dev == p2p->last_p2p_find_oper)
3208                         break;
3209         }
3210
3211         p2p_listen_in_find(p2p, 1);
3212 }
3213
3214
3215 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3216 {
3217         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3218                 success);
3219         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3220
3221         if (!success) {
3222                 if (p2p->sd_peer)
3223                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3224                 p2p->sd_peer = NULL;
3225                 if (p2p->state != P2P_IDLE)
3226                         p2p_continue_find(p2p);
3227                 return;
3228         }
3229
3230         if (p2p->sd_peer == NULL) {
3231                 p2p_dbg(p2p, "No SD peer entry known");
3232                 if (p2p->state != P2P_IDLE)
3233                         p2p_continue_find(p2p);
3234                 return;
3235         }
3236
3237         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3238                 /* Update the pending broadcast SD query count for this device
3239                  */
3240                 p2p->sd_peer->sd_pending_bcast_queries--;
3241
3242                 /*
3243                  * If there are no pending broadcast queries for this device,
3244                  * mark it as done (-1).
3245                  */
3246                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3247                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3248         }
3249
3250         /* Wait for response from the peer */
3251         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3252         p2p_set_timeout(p2p, 0, 200000);
3253 }
3254
3255
3256 /**
3257  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3258  * @p2p: P2P module context from p2p_init()
3259  */
3260 static void p2p_retry_pd(struct p2p_data *p2p)
3261 {
3262         struct p2p_device *dev;
3263
3264         /*
3265          * Retry the prov disc req attempt only for the peer that the user had
3266          * requested.
3267          */
3268
3269         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3270                 if (os_memcmp(p2p->pending_pd_devaddr,
3271                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3272                         continue;
3273                 if (!dev->req_config_methods)
3274                         continue;
3275
3276                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3277                         MACSTR " (config methods 0x%x)",
3278                         MAC2STR(dev->info.p2p_device_addr),
3279                         dev->req_config_methods);
3280                 p2p_send_prov_disc_req(p2p, dev,
3281                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3282                                        p2p->pd_force_freq);
3283                 return;
3284         }
3285 }
3286
3287
3288 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3289 {
3290         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3291                 success);
3292
3293         /*
3294          * Postpone resetting the pending action state till after we actually
3295          * time out. This allows us to take some action like notifying any
3296          * interested parties about no response to the request.
3297          *
3298          * When the timer (below) goes off we check in IDLE, SEARCH, or
3299          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3300          * requests in, if this was still pending and then raise notification.
3301          */
3302
3303         if (!success) {
3304                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3305
3306                 if (p2p->user_initiated_pd &&
3307                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3308                 {
3309                         /* Retry request from timeout to avoid busy loops */
3310                         p2p->pending_action_state = P2P_PENDING_PD;
3311                         p2p_set_timeout(p2p, 0, 50000);
3312                 } else if (p2p->state != P2P_IDLE)
3313                         p2p_continue_find(p2p);
3314                 else if (p2p->user_initiated_pd) {
3315                         p2p->pending_action_state = P2P_PENDING_PD;
3316                         p2p_set_timeout(p2p, 0, 300000);
3317                 }
3318                 return;
3319         }
3320
3321         /*
3322          * This postponing, of resetting pending_action_state, needs to be
3323          * done only for user initiated PD requests and not internal ones.
3324          */
3325         if (p2p->user_initiated_pd)
3326                 p2p->pending_action_state = P2P_PENDING_PD;
3327         else
3328                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3329
3330         /* Wait for response from the peer */
3331         if (p2p->state == P2P_SEARCH)
3332                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3333         p2p_set_timeout(p2p, 0, 200000);
3334 }
3335
3336
3337 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3338 {
3339         if (p2p->after_scan_tx_in_progress) {
3340                 p2p->after_scan_tx_in_progress = 0;
3341                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3342                     p2p_run_after_scan(p2p))
3343                         return 1;
3344                 if (p2p->state == P2P_SEARCH) {
3345                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3346                         p2p_continue_find(p2p);
3347                 }
3348         }
3349
3350         return 0;
3351 }
3352
3353
3354 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3355 {
3356         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3357                 success);
3358
3359         if (p2p->send_action_in_progress) {
3360                 p2p->send_action_in_progress = 0;
3361                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3362         }
3363
3364         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3365
3366         if (!success)
3367                 goto continue_search;
3368
3369         if (!p2p->cfg->prov_disc_resp_cb ||
3370             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3371                 goto continue_search;
3372
3373         p2p_dbg(p2p,
3374                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3375         return;
3376
3377 continue_search:
3378         p2p_check_after_scan_tx_continuation(p2p);
3379 }
3380
3381
3382 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3383                          struct os_reltime *rx_time, int level, const u8 *ies,
3384                          size_t ies_len)
3385 {
3386         if (os_reltime_before(rx_time, &p2p->find_start)) {
3387                 /*
3388                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3389                  * scan results for relatively long time. To avoid reporting
3390                  * stale information, update P2P peers only based on results
3391                  * that have based on frames received after the last p2p_find
3392                  * operation was started.
3393                  */
3394                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3395                         " (rx_time=%u.%06u)",
3396                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3397                         (unsigned int) rx_time->usec);
3398                 return 0;
3399         }
3400
3401         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3402
3403         return 0;
3404 }
3405
3406
3407 void p2p_scan_res_handled(struct p2p_data *p2p)
3408 {
3409         if (!p2p->p2p_scan_running) {
3410                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3411         }
3412         p2p->p2p_scan_running = 0;
3413         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3414
3415         if (p2p_run_after_scan(p2p))
3416                 return;
3417         if (p2p->state == P2P_SEARCH)
3418                 p2p_continue_find(p2p);
3419 }
3420
3421
3422 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3423 {
3424         u8 dev_capab;
3425         u8 *len;
3426
3427 #ifdef CONFIG_WIFI_DISPLAY
3428         if (p2p->wfd_ie_probe_req)
3429                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3430 #endif /* CONFIG_WIFI_DISPLAY */
3431
3432         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3433                 wpabuf_put_buf(ies,
3434                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3435
3436         len = p2p_buf_add_ie_hdr(ies);
3437
3438         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3439
3440         /* P2PS requires Probe Request frames to include SD bit */
3441         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3442                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3443
3444         p2p_buf_add_capability(ies, dev_capab, 0);
3445
3446         if (dev_id)
3447                 p2p_buf_add_device_id(ies, dev_id);
3448         if (p2p->cfg->reg_class && p2p->cfg->channel)
3449                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3450                                            p2p->cfg->reg_class,
3451                                            p2p->cfg->channel);
3452         if (p2p->ext_listen_interval)
3453                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3454                                               p2p->ext_listen_interval);
3455
3456         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3457                 p2p_buf_add_service_hash(ies, p2p);
3458
3459         /* TODO: p2p_buf_add_operating_channel() if GO */
3460         p2p_buf_update_ie_hdr(ies, len);
3461 }
3462
3463
3464 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3465 {
3466         size_t len = 100;
3467
3468 #ifdef CONFIG_WIFI_DISPLAY
3469         if (p2p && p2p->wfd_ie_probe_req)
3470                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3471 #endif /* CONFIG_WIFI_DISPLAY */
3472
3473         if (p2p && p2p->vendor_elem &&
3474             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3475                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3476
3477         return len;
3478 }
3479
3480
3481 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3482 {
3483         return p2p_attr_text(p2p_ie, buf, end);
3484 }
3485
3486
3487 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3488 {
3489         struct p2p_device *dev = p2p->go_neg_peer;
3490         int timeout;
3491
3492         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3493
3494         if (dev == NULL) {
3495                 p2p_dbg(p2p, "No pending GO Negotiation");
3496                 return;
3497         }
3498
3499         if (success) {
3500                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3501                         p2p_set_state(p2p, P2P_IDLE);
3502                         return;
3503                 }
3504         } else if (dev->go_neg_req_sent) {
3505                 /* Cancel the increment from p2p_connect_send() on failure */
3506                 dev->go_neg_req_sent--;
3507         }
3508
3509         if (!success &&
3510             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3511             !is_zero_ether_addr(dev->member_in_go_dev)) {
3512                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3513                         MAC2STR(dev->info.p2p_device_addr));
3514                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3515                 p2p_send_dev_disc_req(p2p, dev);
3516                 return;
3517         }
3518
3519         /*
3520          * Use P2P find, if needed, to find the other device from its listen
3521          * channel.
3522          */
3523         p2p_set_state(p2p, P2P_CONNECT);
3524         timeout = success ? 500000 : 100000;
3525         if (!success && p2p->go_neg_peer &&
3526             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3527                 unsigned int r;
3528                 /*
3529                  * Peer is expected to wait our response and we will skip the
3530                  * listen phase. Add some randomness to the wait time here to
3531                  * make it less likely to hit cases where we could end up in
3532                  * sync with peer not listening.
3533                  */
3534                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3535                         r = 0;
3536                 timeout += r % 100000;
3537         }
3538         p2p_set_timeout(p2p, 0, timeout);
3539 }
3540
3541
3542 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3543 {
3544         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3545                 success);
3546         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3547                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3548                 return;
3549         }
3550         p2p_set_state(p2p, P2P_CONNECT);
3551         p2p_set_timeout(p2p, 0, 500000);
3552 }
3553
3554
3555 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3556                                        const u8 *addr)
3557 {
3558         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3559         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3560                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3561                 return;
3562         }
3563
3564         if (success) {
3565                 struct p2p_device *dev;
3566                 dev = p2p_get_device(p2p, addr);
3567                 if (dev &&
3568                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3569                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3570         }
3571
3572         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3573                 p2p_continue_find(p2p);
3574 }
3575
3576
3577 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3578                                enum p2p_send_action_result result)
3579 {
3580         struct p2p_device *dev;
3581
3582         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3583         if (result == P2P_SEND_ACTION_FAILED) {
3584                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3585                 p2p_go_neg_failed(p2p, -1);
3586                 return;
3587         }
3588
3589         dev = p2p->go_neg_peer;
3590
3591         if (result == P2P_SEND_ACTION_NO_ACK) {
3592                 /*
3593                  * Retry GO Negotiation Confirmation
3594                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3595                  * ACK for confirmation.
3596                  */
3597                 if (dev && dev->go_neg_conf &&
3598                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3599                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3600                                 dev->go_neg_conf_sent);
3601                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3602                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3603                                             dev->info.p2p_device_addr,
3604                                             p2p->cfg->dev_addr,
3605                                             dev->info.p2p_device_addr,
3606                                             wpabuf_head(dev->go_neg_conf),
3607                                             wpabuf_len(dev->go_neg_conf), 0) >=
3608                             0) {
3609                                 dev->go_neg_conf_sent++;
3610                                 return;
3611                         }
3612                         p2p_dbg(p2p, "Failed to re-send Action frame");
3613
3614                         /*
3615                          * Continue with the assumption that the first attempt
3616                          * went through and just the ACK frame was lost.
3617                          */
3618                 }
3619
3620                 /*
3621                  * It looks like the TX status for GO Negotiation Confirm is
3622                  * often showing failure even when the peer has actually
3623                  * received the frame. Since the peer may change channels
3624                  * immediately after having received the frame, we may not see
3625                  * an Ack for retries, so just dropping a single frame may
3626                  * trigger this. To allow the group formation to succeed if the
3627                  * peer did indeed receive the frame, continue regardless of
3628                  * the TX status.
3629                  */
3630                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3631         }
3632
3633         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3634
3635         if (dev == NULL)
3636                 return;
3637
3638         p2p_go_complete(p2p, dev);
3639 }
3640
3641
3642 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3643                         const u8 *src, const u8 *bssid,
3644                         enum p2p_send_action_result result)
3645 {
3646         enum p2p_pending_action_state state;
3647         int success;
3648
3649         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3650                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3651                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3652                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3653         success = result == P2P_SEND_ACTION_SUCCESS;
3654         state = p2p->pending_action_state;
3655         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3656         switch (state) {
3657         case P2P_NO_PENDING_ACTION:
3658                 if (p2p->send_action_in_progress) {
3659                         p2p->send_action_in_progress = 0;
3660                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3661                 }
3662                 p2p_check_after_scan_tx_continuation(p2p);
3663                 break;
3664         case P2P_PENDING_GO_NEG_REQUEST:
3665                 p2p_go_neg_req_cb(p2p, success);
3666                 break;
3667         case P2P_PENDING_GO_NEG_RESPONSE:
3668                 p2p_go_neg_resp_cb(p2p, success);
3669                 break;
3670         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3671                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3672                 break;
3673         case P2P_PENDING_GO_NEG_CONFIRM:
3674                 p2p_go_neg_conf_cb(p2p, result);
3675                 break;
3676         case P2P_PENDING_SD:
3677                 p2p_sd_cb(p2p, success);
3678                 break;
3679         case P2P_PENDING_PD:
3680                 p2p_prov_disc_cb(p2p, success);
3681                 break;
3682         case P2P_PENDING_PD_RESPONSE:
3683                 p2p_prov_disc_resp_cb(p2p, success);
3684                 break;
3685         case P2P_PENDING_INVITATION_REQUEST:
3686                 p2p_invitation_req_cb(p2p, success);
3687                 break;
3688         case P2P_PENDING_INVITATION_RESPONSE:
3689                 p2p_invitation_resp_cb(p2p, success);
3690                 break;
3691         case P2P_PENDING_DEV_DISC_REQUEST:
3692                 p2p_dev_disc_req_cb(p2p, success);
3693                 break;
3694         case P2P_PENDING_DEV_DISC_RESPONSE:
3695                 p2p_dev_disc_resp_cb(p2p, success);
3696                 break;
3697         case P2P_PENDING_GO_DISC_REQ:
3698                 p2p_go_disc_req_cb(p2p, success);
3699                 break;
3700         }
3701
3702         p2p->after_scan_tx_in_progress = 0;
3703 }
3704
3705
3706 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3707                    unsigned int duration)
3708 {
3709         if (freq == p2p->pending_client_disc_freq) {
3710                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3711                 p2p->pending_client_disc_freq = 0;
3712                 return;
3713         }
3714
3715         if (freq != p2p->pending_listen_freq) {
3716                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3717                         freq, duration, p2p->pending_listen_freq);
3718                 return;
3719         }
3720
3721         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3722                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3723                 p2p->pending_listen_freq);
3724         p2p->in_listen = 1;
3725         p2p->drv_in_listen = freq;
3726         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3727                 /*
3728                  * Add 20 msec extra wait to avoid race condition with driver
3729                  * remain-on-channel end event, i.e., give driver more time to
3730                  * complete the operation before our timeout expires.
3731                  */
3732                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3733                                 p2p->pending_listen_usec + 20000);
3734         }
3735
3736         p2p->pending_listen_freq = 0;
3737 }
3738
3739
3740 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3741 {
3742         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3743         p2p->drv_in_listen = 0;
3744         if (p2p->in_listen)
3745                 return 0; /* Internal timeout will trigger the next step */
3746
3747         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3748                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3749                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3750                         p2p_go_neg_failed(p2p, -1);
3751                         return 0;
3752                 }
3753
3754                 p2p_set_state(p2p, P2P_CONNECT);
3755                 p2p_connect_send(p2p, p2p->go_neg_peer);
3756                 return 1;
3757         } else if (p2p->state == P2P_SEARCH) {
3758                 if (p2p->p2p_scan_running) {
3759                          /*
3760                           * Search is already in progress. This can happen if
3761                           * an Action frame RX is reported immediately after
3762                           * the end of a remain-on-channel operation and the
3763                           * response frame to that is sent using an offchannel
3764                           * operation while in p2p_find. Avoid an attempt to
3765                           * restart a scan here.
3766                           */
3767                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3768                         return 1;
3769                 }
3770                 if (p2p->pending_listen_freq) {
3771                         /*
3772                          * Better wait a bit if the driver is unable to start
3773                          * offchannel operation for some reason. p2p_search()
3774                          * will be started from internal timeout.
3775                          */
3776                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3777                         p2p_set_timeout(p2p, 0, 100000);
3778                         return 1;
3779                 }
3780                 if (p2p->search_delay) {
3781                         p2p_dbg(p2p, "Delay search operation by %u ms",
3782                                 p2p->search_delay);
3783                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3784                                         (p2p->search_delay % 1000) * 1000);
3785                         return 1;
3786                 }
3787                 p2p_search(p2p);
3788                 return 1;
3789         }
3790
3791         return 0;
3792 }
3793
3794
3795 static void p2p_timeout_connect(struct p2p_data *p2p)
3796 {
3797         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3798         if (p2p->go_neg_peer &&
3799             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3800                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3801                 p2p_go_neg_failed(p2p, -1);
3802                 return;
3803         }
3804         if (p2p->go_neg_peer &&
3805             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3806             p2p->go_neg_peer->connect_reqs < 120) {
3807                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3808                 p2p_connect_send(p2p, p2p->go_neg_peer);
3809                 return;
3810         }
3811         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3812                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3813                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3814                 p2p_set_timeout(p2p, 0, 30000);
3815                 return;
3816         }
3817         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3818         p2p_listen_in_find(p2p, 0);
3819 }
3820
3821
3822 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3823 {
3824         if (p2p->go_neg_peer) {
3825                 if (p2p->drv_in_listen) {
3826                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3827                         return;
3828                 }
3829
3830                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3831                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3832                         p2p_go_neg_failed(p2p, -1);
3833                         return;
3834                 }
3835
3836                 p2p_set_state(p2p, P2P_CONNECT);
3837                 p2p_connect_send(p2p, p2p->go_neg_peer);
3838         } else
3839                 p2p_set_state(p2p, P2P_IDLE);
3840 }
3841
3842
3843 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3844 {
3845         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3846
3847         if (p2p->cfg->is_concurrent_session_active &&
3848             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3849                 p2p_set_timeout(p2p, 0, 500000);
3850         else
3851                 p2p_set_timeout(p2p, 0, 200000);
3852 }
3853
3854
3855 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3856 {
3857         struct p2p_device *dev = p2p->go_neg_peer;
3858
3859         if (dev == NULL) {
3860                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3861                 return;
3862         }
3863
3864         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3865         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3866         p2p_listen_in_find(p2p, 0);
3867 }
3868
3869
3870 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3871 {
3872         p2p_dbg(p2p, "Service Discovery Query timeout");
3873         if (p2p->sd_peer) {
3874                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3875                 p2p->sd_peer = NULL;
3876         }
3877         p2p_continue_find(p2p);
3878 }
3879
3880
3881 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3882 {
3883         p2p_dbg(p2p, "Provision Discovery Request timeout");
3884         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3885         p2p_continue_find(p2p);
3886 }
3887
3888
3889 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3890 {
3891         u32 adv_id = 0;
3892         u8 *adv_mac = NULL;
3893
3894         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3895
3896         /*
3897          * For user initiated PD requests that we have not gotten any responses
3898          * for while in IDLE state, we retry them a couple of times before
3899          * giving up.
3900          */
3901         if (!p2p->user_initiated_pd)
3902                 return;
3903
3904         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3905
3906         if (p2p->pd_retries) {
3907                 p2p->pd_retries--;
3908                 p2p_retry_pd(p2p);
3909         } else {
3910                 struct p2p_device *dev;
3911                 int for_join = 0;
3912
3913                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3914                         if (os_memcmp(p2p->pending_pd_devaddr,
3915                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3916                                 continue;
3917                         if (dev->req_config_methods &&
3918                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3919                                 for_join = 1;
3920                 }
3921
3922                 if (p2p->p2ps_prov) {
3923                         adv_id = p2p->p2ps_prov->adv_id;
3924                         adv_mac = p2p->p2ps_prov->adv_mac;
3925                 }
3926
3927                 if (p2p->cfg->prov_disc_fail)
3928                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3929                                                  p2p->pending_pd_devaddr,
3930                                                  for_join ?
3931                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3932                                                  P2P_PROV_DISC_TIMEOUT,
3933                                                  adv_id, adv_mac, NULL);
3934                 p2p_reset_pending_pd(p2p);
3935         }
3936 }
3937
3938
3939 static void p2p_timeout_invite(struct p2p_data *p2p)
3940 {
3941         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3942         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3943         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3944                 /*
3945                  * Better remain on operating channel instead of listen channel
3946                  * when running a group.
3947                  */
3948                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3949                 p2p_set_timeout(p2p, 0, 100000);
3950                 return;
3951         }
3952         p2p_listen_in_find(p2p, 0);
3953 }
3954
3955
3956 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3957 {
3958         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3959                 p2p_set_state(p2p, P2P_INVITE);
3960                 p2p_invite_send(p2p, p2p->invite_peer,
3961                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3962         } else {
3963                 if (p2p->invite_peer) {
3964                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3965                         if (p2p->cfg->invitation_result)
3966                                 p2p->cfg->invitation_result(
3967                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3968                                         p2p->invite_peer->info.p2p_device_addr,
3969                                         0, 0);
3970                 }
3971                 p2p_set_state(p2p, P2P_IDLE);
3972         }
3973 }
3974
3975
3976 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3977 {
3978         struct p2p_data *p2p = eloop_ctx;
3979
3980         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3981
3982         p2p->in_listen = 0;
3983         if (p2p->drv_in_listen) {
3984                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3985                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3986         }
3987
3988         switch (p2p->state) {
3989         case P2P_IDLE:
3990                 /* Check if we timed out waiting for PD req */
3991                 if (p2p->pending_action_state == P2P_PENDING_PD)
3992                         p2p_timeout_prov_disc_req(p2p);
3993                 break;
3994         case P2P_SEARCH:
3995                 /* Check if we timed out waiting for PD req */
3996                 if (p2p->pending_action_state == P2P_PENDING_PD)
3997                         p2p_timeout_prov_disc_req(p2p);
3998                 if (p2p->search_delay && !p2p->in_search_delay) {
3999                         p2p_dbg(p2p, "Delay search operation by %u ms",
4000                                 p2p->search_delay);
4001                         p2p->in_search_delay = 1;
4002                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4003                                         (p2p->search_delay % 1000) * 1000);
4004                         break;
4005                 }
4006                 p2p->in_search_delay = 0;
4007                 p2p_search(p2p);
4008                 break;
4009         case P2P_CONNECT:
4010                 p2p_timeout_connect(p2p);
4011                 break;
4012         case P2P_CONNECT_LISTEN:
4013                 p2p_timeout_connect_listen(p2p);
4014                 break;
4015         case P2P_GO_NEG:
4016                 break;
4017         case P2P_LISTEN_ONLY:
4018                 /* Check if we timed out waiting for PD req */
4019                 if (p2p->pending_action_state == P2P_PENDING_PD)
4020                         p2p_timeout_prov_disc_req(p2p);
4021
4022                 if (p2p->ext_listen_only) {
4023                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4024                         p2p->ext_listen_only = 0;
4025                         p2p_set_state(p2p, P2P_IDLE);
4026                 }
4027                 break;
4028         case P2P_WAIT_PEER_CONNECT:
4029                 p2p_timeout_wait_peer_connect(p2p);
4030                 break;
4031         case P2P_WAIT_PEER_IDLE:
4032                 p2p_timeout_wait_peer_idle(p2p);
4033                 break;
4034         case P2P_SD_DURING_FIND:
4035                 p2p_timeout_sd_during_find(p2p);
4036                 break;
4037         case P2P_PROVISIONING:
4038                 break;
4039         case P2P_PD_DURING_FIND:
4040                 p2p_timeout_prov_disc_during_find(p2p);
4041                 break;
4042         case P2P_INVITE:
4043                 p2p_timeout_invite(p2p);
4044                 break;
4045         case P2P_INVITE_LISTEN:
4046                 p2p_timeout_invite_listen(p2p);
4047                 break;
4048         }
4049 }
4050
4051
4052 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4053 {
4054         struct p2p_device *dev;
4055
4056         dev = p2p_get_device(p2p, peer_addr);
4057         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4058                 MACSTR, MAC2STR(peer_addr));
4059         if (dev == NULL) {
4060                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4061                 return -1;
4062         }
4063         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4064         dev->flags |= P2P_DEV_USER_REJECTED;
4065         return 0;
4066 }
4067
4068
4069 const char * p2p_wps_method_text(enum p2p_wps_method method)
4070 {
4071         switch (method) {
4072         case WPS_NOT_READY:
4073                 return "not-ready";
4074         case WPS_PIN_DISPLAY:
4075                 return "Display";
4076         case WPS_PIN_KEYPAD:
4077                 return "Keypad";
4078         case WPS_PBC:
4079                 return "PBC";
4080         case WPS_NFC:
4081                 return "NFC";
4082         case WPS_P2PS:
4083                 return "P2PS";
4084         }
4085
4086         return "??";
4087 }
4088
4089
4090 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4091 {
4092         switch (go_state) {
4093         case UNKNOWN_GO:
4094                 return "unknown";
4095         case LOCAL_GO:
4096                 return "local";
4097         case  REMOTE_GO:
4098                 return "remote";
4099         }
4100
4101         return "??";
4102 }
4103
4104
4105 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4106                                                const u8 *addr, int next)
4107 {
4108         struct p2p_device *dev;
4109
4110         if (addr)
4111                 dev = p2p_get_device(p2p, addr);
4112         else
4113                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4114
4115         if (dev && next) {
4116                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4117                 if (&dev->list == &p2p->devices)
4118                         dev = NULL;
4119         }
4120
4121         if (dev == NULL)
4122                 return NULL;
4123
4124         return &dev->info;
4125 }
4126
4127
4128 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4129                           char *buf, size_t buflen)
4130 {
4131         struct p2p_device *dev;
4132         int res;
4133         char *pos, *end;
4134         struct os_reltime now;
4135
4136         if (info == NULL)
4137                 return -1;
4138
4139         dev = (struct p2p_device *) (((u8 *) info) -
4140                                      offsetof(struct p2p_device, info));
4141
4142         pos = buf;
4143         end = buf + buflen;
4144
4145         os_get_reltime(&now);
4146         res = os_snprintf(pos, end - pos,
4147                           "age=%d\n"
4148                           "listen_freq=%d\n"
4149                           "wps_method=%s\n"
4150                           "interface_addr=" MACSTR "\n"
4151                           "member_in_go_dev=" MACSTR "\n"
4152                           "member_in_go_iface=" MACSTR "\n"
4153                           "go_neg_req_sent=%d\n"
4154                           "go_state=%s\n"
4155                           "dialog_token=%u\n"
4156                           "intended_addr=" MACSTR "\n"
4157                           "country=%c%c\n"
4158                           "oper_freq=%d\n"
4159                           "req_config_methods=0x%x\n"
4160                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4161                           "status=%d\n"
4162                           "invitation_reqs=%u\n",
4163                           (int) (now.sec - dev->last_seen.sec),
4164                           dev->listen_freq,
4165                           p2p_wps_method_text(dev->wps_method),
4166                           MAC2STR(dev->interface_addr),
4167                           MAC2STR(dev->member_in_go_dev),
4168                           MAC2STR(dev->member_in_go_iface),
4169                           dev->go_neg_req_sent,
4170                           p2p_go_state_text(dev->go_state),
4171                           dev->dialog_token,
4172                           MAC2STR(dev->intended_addr),
4173                           dev->country[0] ? dev->country[0] : '_',
4174                           dev->country[1] ? dev->country[1] : '_',
4175                           dev->oper_freq,
4176                           dev->req_config_methods,
4177                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4178                           "[PROBE_REQ_ONLY]" : "",
4179                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4180                           dev->flags & P2P_DEV_NOT_YET_READY ?
4181                           "[NOT_YET_READY]" : "",
4182                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4183                           "[PD_PEER_DISPLAY]" : "",
4184                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4185                           "[PD_PEER_KEYPAD]" : "",
4186                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4187                           "[PD_PEER_P2PS]" : "",
4188                           dev->flags & P2P_DEV_USER_REJECTED ?
4189                           "[USER_REJECTED]" : "",
4190                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4191                           "[PEER_WAITING_RESPONSE]" : "",
4192                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4193                           "[PREFER_PERSISTENT_GROUP]" : "",
4194                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4195                           "[WAIT_GO_NEG_RESPONSE]" : "",
4196                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4197                           "[WAIT_GO_NEG_CONFIRM]" : "",
4198                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4199                           "[GROUP_CLIENT_ONLY]" : "",
4200                           dev->flags & P2P_DEV_FORCE_FREQ ?
4201                           "[FORCE_FREQ]" : "",
4202                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4203                           "[PD_FOR_JOIN]" : "",
4204                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4205                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4206                           dev->status,
4207                           dev->invitation_reqs);
4208         if (os_snprintf_error(end - pos, res))
4209                 return pos - buf;
4210         pos += res;
4211
4212         if (dev->ext_listen_period) {
4213                 res = os_snprintf(pos, end - pos,
4214                                   "ext_listen_period=%u\n"
4215                                   "ext_listen_interval=%u\n",
4216                                   dev->ext_listen_period,
4217                                   dev->ext_listen_interval);
4218                 if (os_snprintf_error(end - pos, res))
4219                         return pos - buf;
4220                 pos += res;
4221         }
4222
4223         if (dev->oper_ssid_len) {
4224                 res = os_snprintf(pos, end - pos,
4225                                   "oper_ssid=%s\n",
4226                                   wpa_ssid_txt(dev->oper_ssid,
4227                                                dev->oper_ssid_len));
4228                 if (os_snprintf_error(end - pos, res))
4229                         return pos - buf;
4230                 pos += res;
4231         }
4232
4233 #ifdef CONFIG_WIFI_DISPLAY
4234         if (dev->info.wfd_subelems) {
4235                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4236                 if (os_snprintf_error(end - pos, res))
4237                         return pos - buf;
4238                 pos += res;
4239
4240                 pos += wpa_snprintf_hex(pos, end - pos,
4241                                         wpabuf_head(dev->info.wfd_subelems),
4242                                         wpabuf_len(dev->info.wfd_subelems));
4243
4244                 res = os_snprintf(pos, end - pos, "\n");
4245                 if (os_snprintf_error(end - pos, res))
4246                         return pos - buf;
4247                 pos += res;
4248         }
4249 #endif /* CONFIG_WIFI_DISPLAY */
4250
4251         return pos - buf;
4252 }
4253
4254
4255 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4256 {
4257         return p2p_get_device(p2p, addr) != NULL;
4258 }
4259
4260
4261 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4262 {
4263         if (enabled) {
4264                 p2p_dbg(p2p, "Client discoverability enabled");
4265                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4266         } else {
4267                 p2p_dbg(p2p, "Client discoverability disabled");
4268                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4269         }
4270 }
4271
4272
4273 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4274                                               u32 duration2, u32 interval2)
4275 {
4276         struct wpabuf *req;
4277         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4278         u8 *len;
4279
4280         req = wpabuf_alloc(100);
4281         if (req == NULL)
4282                 return NULL;
4283
4284         if (duration1 || interval1) {
4285                 os_memset(&desc1, 0, sizeof(desc1));
4286                 desc1.count_type = 1;
4287                 desc1.duration = duration1;
4288                 desc1.interval = interval1;
4289                 ptr1 = &desc1;
4290
4291                 if (duration2 || interval2) {
4292                         os_memset(&desc2, 0, sizeof(desc2));
4293                         desc2.count_type = 2;
4294                         desc2.duration = duration2;
4295                         desc2.interval = interval2;
4296                         ptr2 = &desc2;
4297                 }
4298         }
4299
4300         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4301         len = p2p_buf_add_ie_hdr(req);
4302         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4303         p2p_buf_update_ie_hdr(req, len);
4304
4305         return req;
4306 }
4307
4308
4309 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4310                      const u8 *own_interface_addr, unsigned int freq,
4311                      u32 duration1, u32 interval1, u32 duration2,
4312                      u32 interval2)
4313 {
4314         struct wpabuf *req;
4315
4316         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4317                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4318                 "dur2=%u int2=%u",
4319                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4320                 freq, duration1, interval1, duration2, interval2);
4321
4322         req = p2p_build_presence_req(duration1, interval1, duration2,
4323                                      interval2);
4324         if (req == NULL)
4325                 return -1;
4326
4327         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4328         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4329                             go_interface_addr,
4330                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4331                 p2p_dbg(p2p, "Failed to send Action frame");
4332         }
4333         wpabuf_free(req);
4334
4335         return 0;
4336 }
4337
4338
4339 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4340                                                size_t noa_len, u8 dialog_token)
4341 {
4342         struct wpabuf *resp;
4343         u8 *len;
4344
4345         resp = wpabuf_alloc(100 + noa_len);
4346         if (resp == NULL)
4347                 return NULL;
4348
4349         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4350         len = p2p_buf_add_ie_hdr(resp);
4351         p2p_buf_add_status(resp, status);
4352         if (noa) {
4353                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4354                 wpabuf_put_le16(resp, noa_len);
4355                 wpabuf_put_data(resp, noa, noa_len);
4356         } else
4357                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4358         p2p_buf_update_ie_hdr(resp, len);
4359
4360         return resp;
4361 }
4362
4363
4364 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4365                                      const u8 *sa, const u8 *data, size_t len,
4366                                      int rx_freq)
4367 {
4368         struct p2p_message msg;
4369         u8 status;
4370         struct wpabuf *resp;
4371         size_t g;
4372         struct p2p_group *group = NULL;
4373         int parsed = 0;
4374         u8 noa[50];
4375         int noa_len;
4376
4377         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4378
4379         for (g = 0; g < p2p->num_groups; g++) {
4380                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4381                               ETH_ALEN) == 0) {
4382                         group = p2p->groups[g];
4383                         break;
4384                 }
4385         }
4386         if (group == NULL) {
4387                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4388                         MACSTR, MAC2STR(da));
4389                 return;
4390         }
4391
4392         if (p2p_parse(data, len, &msg) < 0) {
4393                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4394                 status = P2P_SC_FAIL_INVALID_PARAMS;
4395                 goto fail;
4396         }
4397         parsed = 1;
4398
4399         if (msg.noa == NULL) {
4400                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4401                 status = P2P_SC_FAIL_INVALID_PARAMS;
4402                 goto fail;
4403         }
4404
4405         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4406
4407 fail:
4408         if (p2p->cfg->get_noa)
4409                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4410                                             sizeof(noa));
4411         else
4412                 noa_len = -1;
4413         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4414                                        noa_len > 0 ? noa_len : 0,
4415                                        msg.dialog_token);
4416         if (parsed)
4417                 p2p_parse_free(&msg);
4418         if (resp == NULL)
4419                 return;
4420
4421         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4422         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4423                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4424                 p2p_dbg(p2p, "Failed to send Action frame");
4425         }
4426         wpabuf_free(resp);
4427 }
4428
4429
4430 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4431                                       const u8 *sa, const u8 *data, size_t len)
4432 {
4433         struct p2p_message msg;
4434
4435         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4436
4437         if (p2p_parse(data, len, &msg) < 0) {
4438                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4439                 return;
4440         }
4441
4442         if (msg.status == NULL || msg.noa == NULL) {
4443                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4444                 p2p_parse_free(&msg);
4445                 return;
4446         }
4447
4448         if (p2p->cfg->presence_resp) {
4449                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4450                                         msg.noa, msg.noa_len);
4451         }
4452
4453         if (*msg.status) {
4454                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4455                         *msg.status);
4456                 p2p_parse_free(&msg);
4457                 return;
4458         }
4459
4460         p2p_dbg(p2p, "P2P Presence Request was accepted");
4461         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4462                     msg.noa, msg.noa_len);
4463         /* TODO: process NoA */
4464         p2p_parse_free(&msg);
4465 }
4466
4467
4468 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4469 {
4470         struct p2p_data *p2p = eloop_ctx;
4471
4472         if (p2p->ext_listen_interval) {
4473                 /* Schedule next extended listen timeout */
4474                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4475                                        p2p->ext_listen_interval_usec,
4476                                        p2p_ext_listen_timeout, p2p, NULL);
4477         }
4478
4479         if ((p2p->cfg->is_p2p_in_progress &&
4480              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4481             (p2p->pending_action_state == P2P_PENDING_PD &&
4482              p2p->pd_retries > 0)) {
4483                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4484                         p2p_state_txt(p2p->state));
4485                 return;
4486         }
4487
4488         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4489                 /*
4490                  * This should not really happen, but it looks like the Listen
4491                  * command may fail is something else (e.g., a scan) was
4492                  * running at an inconvenient time. As a workaround, allow new
4493                  * Extended Listen operation to be started.
4494                  */
4495                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4496                 p2p->ext_listen_only = 0;
4497                 p2p_set_state(p2p, P2P_IDLE);
4498         }
4499
4500         if (p2p->state != P2P_IDLE) {
4501                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4502                 return;
4503         }
4504
4505         p2p_dbg(p2p, "Extended Listen timeout");
4506         p2p->ext_listen_only = 1;
4507         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4508                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4509                 p2p->ext_listen_only = 0;
4510         }
4511 }
4512
4513
4514 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4515                    unsigned int interval)
4516 {
4517         if (period > 65535 || interval > 65535 || period > interval ||
4518             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4519                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4520                         period, interval);
4521                 return -1;
4522         }
4523
4524         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4525
4526         if (interval == 0) {
4527                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4528                 p2p->ext_listen_period = 0;
4529                 p2p->ext_listen_interval = 0;
4530                 return 0;
4531         }
4532
4533         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4534                 period, interval);
4535         p2p->ext_listen_period = period;
4536         p2p->ext_listen_interval = interval;
4537         p2p->ext_listen_interval_sec = interval / 1000;
4538         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4539
4540         eloop_register_timeout(p2p->ext_listen_interval_sec,
4541                                p2p->ext_listen_interval_usec,
4542                                p2p_ext_listen_timeout, p2p, NULL);
4543
4544         return 0;
4545 }
4546
4547
4548 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4549                       const u8 *ie, size_t ie_len)
4550 {
4551         struct p2p_message msg;
4552
4553         if (bssid == NULL || ie == NULL)
4554                 return;
4555
4556         os_memset(&msg, 0, sizeof(msg));
4557         if (p2p_parse_ies(ie, ie_len, &msg))
4558                 return;
4559         if (msg.minor_reason_code == NULL) {
4560                 p2p_parse_free(&msg);
4561                 return;
4562         }
4563
4564         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4565                 " reason_code=%u minor_reason_code=%u",
4566                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4567
4568         p2p_parse_free(&msg);
4569 }
4570
4571
4572 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4573                         const u8 *ie, size_t ie_len)
4574 {
4575         struct p2p_message msg;
4576
4577         if (bssid == NULL || ie == NULL)
4578                 return;
4579
4580         os_memset(&msg, 0, sizeof(msg));
4581         if (p2p_parse_ies(ie, ie_len, &msg))
4582                 return;
4583         if (msg.minor_reason_code == NULL) {
4584                 p2p_parse_free(&msg);
4585                 return;
4586         }
4587
4588         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4589                 " reason_code=%u minor_reason_code=%u",
4590                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4591
4592         p2p_parse_free(&msg);
4593 }
4594
4595
4596 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4597 {
4598         if (enabled) {
4599                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4600                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4601         } else {
4602                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4603                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4604         }
4605 }
4606
4607
4608 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4609                                  u8 *op_channel)
4610 {
4611         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4612 }
4613
4614
4615 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4616                            u8 forced)
4617 {
4618         if (p2p_channel_to_freq(reg_class, channel) < 0)
4619                 return -1;
4620
4621         /*
4622          * Listen channel was set in configuration or set by control interface;
4623          * cannot override it.
4624          */
4625         if (p2p->cfg->channel_forced && forced == 0) {
4626                 p2p_dbg(p2p,
4627                         "Listen channel was previously configured - do not override based on optimization");
4628                 return -1;
4629         }
4630
4631         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4632                 reg_class, channel);
4633
4634         if (p2p->state == P2P_IDLE) {
4635                 p2p->cfg->reg_class = reg_class;
4636                 p2p->cfg->channel = channel;
4637                 p2p->cfg->channel_forced = forced;
4638         } else {
4639                 p2p_dbg(p2p, "Defer setting listen channel");
4640                 p2p->pending_reg_class = reg_class;
4641                 p2p->pending_channel = channel;
4642                 p2p->pending_channel_forced = forced;
4643         }
4644
4645         return 0;
4646 }
4647
4648
4649 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4650 {
4651         return p2p->cfg->channel;
4652 }
4653
4654
4655 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4656 {
4657         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4658         if (postfix == NULL) {
4659                 p2p->cfg->ssid_postfix_len = 0;
4660                 return 0;
4661         }
4662         if (len > sizeof(p2p->cfg->ssid_postfix))
4663                 return -1;
4664         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4665         p2p->cfg->ssid_postfix_len = len;
4666         return 0;
4667 }
4668
4669
4670 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4671                          int cfg_op_channel)
4672 {
4673         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4674                 return -1;
4675
4676         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4677                 op_reg_class, op_channel);
4678         p2p->cfg->op_reg_class = op_reg_class;
4679         p2p->cfg->op_channel = op_channel;
4680         p2p->cfg->cfg_op_channel = cfg_op_channel;
4681         return 0;
4682 }
4683
4684
4685 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4686                       const struct p2p_channel *pref_chan)
4687 {
4688         struct p2p_channel *n;
4689
4690         if (pref_chan) {
4691                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4692                 if (n == NULL)
4693                         return -1;
4694                 os_memcpy(n, pref_chan,
4695                           num_pref_chan * sizeof(struct p2p_channel));
4696         } else
4697                 n = NULL;
4698
4699         os_free(p2p->cfg->pref_chan);
4700         p2p->cfg->pref_chan = n;
4701         p2p->cfg->num_pref_chan = num_pref_chan;
4702
4703         return 0;
4704 }
4705
4706
4707 int p2p_set_no_go_freq(struct p2p_data *p2p,
4708                        const struct wpa_freq_range_list *list)
4709 {
4710         struct wpa_freq_range *tmp;
4711
4712         if (list == NULL || list->num == 0) {
4713                 os_free(p2p->no_go_freq.range);
4714                 p2p->no_go_freq.range = NULL;
4715                 p2p->no_go_freq.num = 0;
4716                 return 0;
4717         }
4718
4719         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4720         if (tmp == NULL)
4721                 return -1;
4722         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4723         os_free(p2p->no_go_freq.range);
4724         p2p->no_go_freq.range = tmp;
4725         p2p->no_go_freq.num = list->num;
4726         p2p_dbg(p2p, "Updated no GO chan list");
4727
4728         return 0;
4729 }
4730
4731
4732 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4733                            u8 *iface_addr)
4734 {
4735         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4736         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4737                 return -1;
4738         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4739         return 0;
4740 }
4741
4742
4743 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4744                            u8 *dev_addr)
4745 {
4746         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4747         if (dev == NULL)
4748                 return -1;
4749         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4750         return 0;
4751 }
4752
4753
4754 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4755 {
4756         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4757         if (is_zero_ether_addr(p2p->peer_filter))
4758                 p2p_dbg(p2p, "Disable peer filter");
4759         else
4760                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4761                         MAC2STR(p2p->peer_filter));
4762 }
4763
4764
4765 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4766 {
4767         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4768         if (p2p->cross_connect == enabled)
4769                 return;
4770         p2p->cross_connect = enabled;
4771         /* TODO: may need to tear down any action group where we are GO(?) */
4772 }
4773
4774
4775 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4776 {
4777         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4778         if (dev == NULL)
4779                 return -1;
4780         if (dev->oper_freq <= 0)
4781                 return -1;
4782         return dev->oper_freq;
4783 }
4784
4785
4786 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4787 {
4788         p2p_dbg(p2p, "Intra BSS distribution %s",
4789                 enabled ? "enabled" : "disabled");
4790         p2p->cfg->p2p_intra_bss = enabled;
4791 }
4792
4793
4794 void p2p_update_channel_list(struct p2p_data *p2p,
4795                              const struct p2p_channels *chan,
4796                              const struct p2p_channels *cli_chan)
4797 {
4798         p2p_dbg(p2p, "Update channel list");
4799         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4800         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4801         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4802                   sizeof(struct p2p_channels));
4803         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4804 }
4805
4806
4807 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4808                     const u8 *src, const u8 *bssid, const u8 *buf,
4809                     size_t len, unsigned int wait_time)
4810 {
4811         if (p2p->p2p_scan_running) {
4812                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4813                 if (p2p->after_scan_tx) {
4814                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4815                         os_free(p2p->after_scan_tx);
4816                 }
4817                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4818                                                len);
4819                 if (p2p->after_scan_tx == NULL)
4820                         return -1;
4821                 p2p->after_scan_tx->freq = freq;
4822                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4823                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4824                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4825                 p2p->after_scan_tx->len = len;
4826                 p2p->after_scan_tx->wait_time = wait_time;
4827                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4828                 return 0;
4829         }
4830
4831         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4832                                      buf, len, wait_time);
4833 }
4834
4835
4836 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4837                            int freq_overall)
4838 {
4839         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4840                 freq_24, freq_5, freq_overall);
4841         p2p->best_freq_24 = freq_24;
4842         p2p->best_freq_5 = freq_5;
4843         p2p->best_freq_overall = freq_overall;
4844 }
4845
4846
4847 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4848 {
4849         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4850         p2p->own_freq_preference = freq;
4851 }
4852
4853
4854 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4855 {
4856         if (p2p == NULL || p2p->go_neg_peer == NULL)
4857                 return NULL;
4858         return p2p->go_neg_peer->info.p2p_device_addr;
4859 }
4860
4861
4862 const struct p2p_peer_info *
4863 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4864 {
4865         struct p2p_device *dev;
4866
4867         if (addr) {
4868                 dev = p2p_get_device(p2p, addr);
4869                 if (!dev)
4870                         return NULL;
4871
4872                 if (!next) {
4873                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4874                                 return NULL;
4875
4876                         return &dev->info;
4877                 } else {
4878                         do {
4879                                 dev = dl_list_first(&dev->list,
4880                                                     struct p2p_device,
4881                                                     list);
4882                                 if (!dev || &dev->list == &p2p->devices)
4883                                         return NULL;
4884                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4885                 }
4886         } else {
4887                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4888                 if (!dev)
4889                         return NULL;
4890                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4891                         dev = dl_list_first(&dev->list,
4892                                             struct p2p_device,
4893                                             list);
4894                         if (!dev || &dev->list == &p2p->devices)
4895                                 return NULL;
4896                 }
4897         }
4898
4899         return &dev->info;
4900 }
4901
4902
4903 int p2p_in_progress(struct p2p_data *p2p)
4904 {
4905         if (p2p == NULL)
4906                 return 0;
4907         if (p2p->state == P2P_SEARCH)
4908                 return 2;
4909         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4910 }
4911
4912
4913 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4914                             u8 client_timeout)
4915 {
4916         if (p2p) {
4917                 p2p->go_timeout = go_timeout;
4918                 p2p->client_timeout = client_timeout;
4919         }
4920 }
4921
4922
4923 #ifdef CONFIG_WIFI_DISPLAY
4924
4925 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4926 {
4927         size_t g;
4928         struct p2p_group *group;
4929
4930         for (g = 0; g < p2p->num_groups; g++) {
4931                 group = p2p->groups[g];
4932                 p2p_group_force_beacon_update_ies(group);
4933         }
4934 }
4935
4936
4937 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4938 {
4939         wpabuf_free(p2p->wfd_ie_beacon);
4940         p2p->wfd_ie_beacon = ie;
4941         p2p_update_wfd_ie_groups(p2p);
4942         return 0;
4943 }
4944
4945
4946 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4947 {
4948         wpabuf_free(p2p->wfd_ie_probe_req);
4949         p2p->wfd_ie_probe_req = ie;
4950         return 0;
4951 }
4952
4953
4954 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4955 {
4956         wpabuf_free(p2p->wfd_ie_probe_resp);
4957         p2p->wfd_ie_probe_resp = ie;
4958         p2p_update_wfd_ie_groups(p2p);
4959         return 0;
4960 }
4961
4962
4963 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4964 {
4965         wpabuf_free(p2p->wfd_ie_assoc_req);
4966         p2p->wfd_ie_assoc_req = ie;
4967         return 0;
4968 }
4969
4970
4971 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4972 {
4973         wpabuf_free(p2p->wfd_ie_invitation);
4974         p2p->wfd_ie_invitation = ie;
4975         return 0;
4976 }
4977
4978
4979 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4980 {
4981         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4982         p2p->wfd_ie_prov_disc_req = ie;
4983         return 0;
4984 }
4985
4986
4987 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4988 {
4989         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4990         p2p->wfd_ie_prov_disc_resp = ie;
4991         return 0;
4992 }
4993
4994
4995 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4996 {
4997         wpabuf_free(p2p->wfd_ie_go_neg);
4998         p2p->wfd_ie_go_neg = ie;
4999         return 0;
5000 }
5001
5002
5003 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5004 {
5005         wpabuf_free(p2p->wfd_dev_info);
5006         if (elem) {
5007                 p2p->wfd_dev_info = wpabuf_dup(elem);
5008                 if (p2p->wfd_dev_info == NULL)
5009                         return -1;
5010         } else
5011                 p2p->wfd_dev_info = NULL;
5012
5013         return 0;
5014 }
5015
5016
5017 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5018 {
5019         wpabuf_free(p2p->wfd_assoc_bssid);
5020         if (elem) {
5021                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5022                 if (p2p->wfd_assoc_bssid == NULL)
5023                         return -1;
5024         } else
5025                 p2p->wfd_assoc_bssid = NULL;
5026
5027         return 0;
5028 }
5029
5030
5031 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5032                                   const struct wpabuf *elem)
5033 {
5034         wpabuf_free(p2p->wfd_coupled_sink_info);
5035         if (elem) {
5036                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5037                 if (p2p->wfd_coupled_sink_info == NULL)
5038                         return -1;
5039         } else
5040                 p2p->wfd_coupled_sink_info = NULL;
5041
5042         return 0;
5043 }
5044
5045 #endif /* CONFIG_WIFI_DISPLAY */
5046
5047
5048 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5049                      int max_disc_tu)
5050 {
5051         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5052                 return -1;
5053
5054         p2p->min_disc_int = min_disc_int;
5055         p2p->max_disc_int = max_disc_int;
5056         p2p->max_disc_tu = max_disc_tu;
5057         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5058                 min_disc_int, max_disc_int, max_disc_tu);
5059
5060         return 0;
5061 }
5062
5063
5064 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5065 {
5066         va_list ap;
5067         char buf[500];
5068
5069         if (!p2p->cfg->debug_print)
5070                 return;
5071
5072         va_start(ap, fmt);
5073         vsnprintf(buf, sizeof(buf), fmt, ap);
5074         buf[sizeof(buf) - 1] = '\0';
5075         va_end(ap);
5076         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5077 }
5078
5079
5080 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5081 {
5082         va_list ap;
5083         char buf[500];
5084
5085         if (!p2p->cfg->debug_print)
5086                 return;
5087
5088         va_start(ap, fmt);
5089         vsnprintf(buf, sizeof(buf), fmt, ap);
5090         buf[sizeof(buf) - 1] = '\0';
5091         va_end(ap);
5092         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5093 }
5094
5095
5096 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5097 {
5098         va_list ap;
5099         char buf[500];
5100
5101         if (!p2p->cfg->debug_print)
5102                 return;
5103
5104         va_start(ap, fmt);
5105         vsnprintf(buf, sizeof(buf), fmt, ap);
5106         buf[sizeof(buf) - 1] = '\0';
5107         va_end(ap);
5108         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5109 }
5110
5111
5112 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5113                              void (*peer_callback)(struct p2p_peer_info *peer,
5114                                                    void *user_data),
5115                              void *user_data)
5116 {
5117         struct p2p_device *dev, *n;
5118
5119         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5120                 peer_callback(&dev->info, user_data);
5121         }
5122 }
5123
5124
5125 #ifdef CONFIG_WPS_NFC
5126
5127 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5128                                               int client_freq,
5129                                               const u8 *go_dev_addr,
5130                                               const u8 *ssid, size_t ssid_len)
5131 {
5132         struct wpabuf *buf;
5133         u8 op_class, channel;
5134         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5135
5136         buf = wpabuf_alloc(1000);
5137         if (buf == NULL)
5138                 return NULL;
5139
5140         op_class = p2p->cfg->reg_class;
5141         channel = p2p->cfg->channel;
5142
5143         p2p_buf_add_capability(buf, p2p->dev_capab &
5144                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5145         p2p_buf_add_device_info(buf, p2p, NULL);
5146
5147         if (p2p->num_groups > 0) {
5148                 int freq = p2p_group_get_freq(p2p->groups[0]);
5149                 role = P2P_GO_IN_A_GROUP;
5150                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5151                         p2p_dbg(p2p,
5152                                 "Unknown GO operating frequency %d MHz for NFC handover",
5153                                 freq);
5154                         wpabuf_free(buf);
5155                         return NULL;
5156                 }
5157         } else if (client_freq > 0) {
5158                 role = P2P_CLIENT_IN_A_GROUP;
5159                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5160                         p2p_dbg(p2p,
5161                                 "Unknown client operating frequency %d MHz for NFC handover",
5162                                 client_freq);
5163                         wpabuf_free(buf);
5164                         return NULL;
5165                 }
5166         }
5167
5168         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5169                                        channel, role);
5170
5171         if (p2p->num_groups > 0) {
5172                 /* Limit number of clients to avoid very long message */
5173                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5174                 p2p_group_buf_add_id(p2p->groups[0], buf);
5175         } else if (client_freq > 0 &&
5176                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5177                    ssid && ssid_len > 0) {
5178                 /*
5179                  * Add the optional P2P Group ID to indicate in which group this
5180                  * device is a P2P Client.
5181                  */
5182                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5183         }
5184
5185         return buf;
5186 }
5187
5188
5189 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5190                                            int client_freq,
5191                                            const u8 *go_dev_addr,
5192                                            const u8 *ssid, size_t ssid_len)
5193 {
5194         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5195                                       ssid_len);
5196 }
5197
5198
5199 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5200                                            int client_freq,
5201                                            const u8 *go_dev_addr,
5202                                            const u8 *ssid, size_t ssid_len)
5203 {
5204         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5205                                       ssid_len);
5206 }
5207
5208
5209 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5210                                         struct p2p_nfc_params *params)
5211 {
5212         struct p2p_message msg;
5213         struct p2p_device *dev;
5214         const u8 *p2p_dev_addr;
5215         int freq;
5216         enum p2p_role_indication role;
5217
5218         params->next_step = NO_ACTION;
5219
5220         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5221                                    params->p2p_attr, params->p2p_len, &msg)) {
5222                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5223                 p2p_parse_free(&msg);
5224                 return -1;
5225         }
5226
5227         if (msg.p2p_device_addr)
5228                 p2p_dev_addr = msg.p2p_device_addr;
5229         else if (msg.device_id)
5230                 p2p_dev_addr = msg.device_id;
5231         else {
5232                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5233                 p2p_parse_free(&msg);
5234                 return -1;
5235         }
5236
5237         if (msg.oob_dev_password) {
5238                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5239                           msg.oob_dev_password_len);
5240                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5241         }
5242
5243         dev = p2p_create_device(p2p, p2p_dev_addr);
5244         if (dev == NULL) {
5245                 p2p_parse_free(&msg);
5246                 return -1;
5247         }
5248
5249         params->peer = &dev->info;
5250
5251         os_get_reltime(&dev->last_seen);
5252         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5253         p2p_copy_wps_info(p2p, dev, 0, &msg);
5254
5255         if (!msg.oob_go_neg_channel) {
5256                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5257                 return -1;
5258         }
5259
5260         if (msg.oob_go_neg_channel[3] == 0 &&
5261             msg.oob_go_neg_channel[4] == 0)
5262                 freq = 0;
5263         else
5264                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5265                                            msg.oob_go_neg_channel[4]);
5266         if (freq < 0) {
5267                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5268                 return -1;
5269         }
5270         role = msg.oob_go_neg_channel[5];
5271
5272         if (role == P2P_GO_IN_A_GROUP) {
5273                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5274                 params->go_freq = freq;
5275         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5276                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5277                         freq);
5278                 params->go_freq = freq;
5279         } else
5280                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5281         dev->oob_go_neg_freq = freq;
5282
5283         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5284                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5285                                            p2p->cfg->channel);
5286                 if (freq < 0) {
5287                         p2p_dbg(p2p, "Own listen channel not known");
5288                         return -1;
5289                 }
5290                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5291                 dev->oob_go_neg_freq = freq;
5292         }
5293
5294         if (msg.group_id) {
5295                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5296                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5297                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5298                           params->go_ssid_len);
5299         }
5300
5301         if (dev->flags & P2P_DEV_USER_REJECTED) {
5302                 p2p_dbg(p2p, "Do not report rejected device");
5303                 p2p_parse_free(&msg);
5304                 return 0;
5305         }
5306
5307         if (!(dev->flags & P2P_DEV_REPORTED)) {
5308                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5309                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5310                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5311         }
5312         p2p_parse_free(&msg);
5313
5314         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5315                 params->next_step = BOTH_GO;
5316         else if (role == P2P_GO_IN_A_GROUP)
5317                 params->next_step = JOIN_GROUP;
5318         else if (role == P2P_CLIENT_IN_A_GROUP) {
5319                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5320                 params->next_step = PEER_CLIENT;
5321         } else if (p2p->num_groups > 0)
5322                 params->next_step = AUTH_JOIN;
5323         else if (params->sel)
5324                 params->next_step = INIT_GO_NEG;
5325         else
5326                 params->next_step = RESP_GO_NEG;
5327
5328         return 0;
5329 }
5330
5331
5332 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5333                                       int go_intent,
5334                                       const u8 *own_interface_addr)
5335 {
5336
5337         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5338         if (dev_pw_id == 0) {
5339                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5340                 return;
5341         }
5342
5343         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5344                 dev_pw_id);
5345
5346         p2p->go_intent = go_intent;
5347         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5348 }
5349
5350 #endif /* CONFIG_WPS_NFC */
5351
5352
5353 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5354 {
5355         if (len < 8 || len > 63)
5356                 return -1;
5357         p2p->cfg->passphrase_len = len;
5358         return 0;
5359 }
5360
5361
5362 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5363 {
5364         p2p->vendor_elem = vendor_elem;
5365 }
5366
5367
5368 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5369 {
5370         struct p2p_data *p2p = eloop_ctx;
5371
5372         p2p_dbg(p2p,
5373                 "Timeout on waiting peer to become ready for GO Negotiation");
5374         p2p_go_neg_failed(p2p, -1);
5375 }