src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "crypto/sha256.h"
  17 #include "crypto/crypto.h"
  18 #include "wps/wps_i.h"
  19 #include "p2p_i.h"
  20 #include "p2p.h"
  21
  22
  23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  26                                      const u8 *sa, const u8 *data, size_t len,
  27                                      int rx_freq);
  28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  29                                       const u8 *sa, const u8 *data,
  30                                       size_t len);
  31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  33
  34
  35 /*
  36  * p2p_scan recovery timeout
  37  *
  38  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  39  * timeout for this to avoid hitting P2P timeout unnecessarily.
  40  */
  41 #define P2P_SCAN_TIMEOUT 35
  42
  43 /**
  44  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  45  * entries will be removed
  46  */
  47 #ifndef P2P_PEER_EXPIRATION_AGE
  48 #define P2P_PEER_EXPIRATION_AGE 60
  49 #endif /* P2P_PEER_EXPIRATION_AGE */
  50
  51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  52
  53 static void p2p_expire_peers(struct p2p_data *p2p)
  54 {
  55         struct p2p_device *dev, *n;
  56         struct os_reltime now;
  57         size_t i;
  58
  59         os_get_reltime(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63
  64                 if (dev == p2p->go_neg_peer) {
  65                         /*
  66                          * GO Negotiation is in progress with the peer, so
  67                          * don't expire the peer entry until GO Negotiation
  68                          * fails or times out.
  69                          */
  70                         continue;
  71                 }
  72
  73                 if (p2p->cfg->go_connected &&
  74                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  75                                            dev->info.p2p_device_addr)) {
  76                         /*
  77                          * We are connected as a client to a group in which the
  78                          * peer is the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_reltime(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 for (i = 0; i < p2p->num_groups; i++) {
  85                         if (p2p_group_is_client_connected(
  86                                     p2p->groups[i], dev->info.p2p_device_addr))
  87                                 break;
  88                 }
  89                 if (i < p2p->num_groups) {
  90                         /*
  91                          * The peer is connected as a client in a group where
  92                          * we are the GO, so do not expire the peer entry.
  93                          */
  94                         os_get_reltime(&dev->last_seen);
  95                         continue;
  96                 }
  97
  98                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  99                         MAC2STR(dev->info.p2p_device_addr));
 100                 dl_list_del(&dev->list);
 101                 p2p_device_free(p2p, dev);
 102         }
 103 }
 104
 105
 106 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 107 {
 108         struct p2p_data *p2p = eloop_ctx;
 109         p2p_expire_peers(p2p);
 110         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 111                                p2p_expiration_timeout, p2p, NULL);
 112 }
 113
 114
 115 static const char * p2p_state_txt(int state)
 116 {
 117         switch (state) {
 118         case P2P_IDLE:
 119                 return "IDLE";
 120         case P2P_SEARCH:
 121                 return "SEARCH";
 122         case P2P_CONNECT:
 123                 return "CONNECT";
 124         case P2P_CONNECT_LISTEN:
 125                 return "CONNECT_LISTEN";
 126         case P2P_GO_NEG:
 127                 return "GO_NEG";
 128         case P2P_LISTEN_ONLY:
 129                 return "LISTEN_ONLY";
 130         case P2P_WAIT_PEER_CONNECT:
 131                 return "WAIT_PEER_CONNECT";
 132         case P2P_WAIT_PEER_IDLE:
 133                 return "WAIT_PEER_IDLE";
 134         case P2P_SD_DURING_FIND:
 135                 return "SD_DURING_FIND";
 136         case P2P_PROVISIONING:
 137                 return "PROVISIONING";
 138         case P2P_PD_DURING_FIND:
 139                 return "PD_DURING_FIND";
 140         case P2P_INVITE:
 141                 return "INVITE";
 142         case P2P_INVITE_LISTEN:
 143                 return "INVITE_LISTEN";
 144         default:
 145                 return "?";
 146         }
 147 }
 148
 149
 150 const char * p2p_get_state_txt(struct p2p_data *p2p)
 151 {
 152         return p2p_state_txt(p2p->state);
 153 }
 154
 155
 156 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 157 {
 158         return p2p ? p2p->p2ps_adv_list : NULL;
 159 }
 160
 161
 162 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 163 {
 164         if (p2p && intended_addr)
 165                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 166 }
 167
 168
 169 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 170 {
 171         struct p2p_device *dev = NULL;
 172
 173         if (!addr || !p2p)
 174                 return 0;
 175
 176         dev = p2p_get_device(p2p, addr);
 177         if (dev)
 178                 return dev->wps_prov_info;
 179         else
 180                 return 0;
 181 }
 182
 183
 184 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 185 {
 186         struct p2p_device *dev = NULL;
 187
 188         if (!addr || !p2p)
 189                 return;
 190
 191         dev = p2p_get_device(p2p, addr);
 192         if (dev)
 193                 dev->wps_prov_info = 0;
 194 }
 195
 196
 197 void p2p_set_state(struct p2p_data *p2p, int new_state)
 198 {
 199         p2p_dbg(p2p, "State %s -> %s",
 200                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 201         p2p->state = new_state;
 202
 203         if (new_state == P2P_IDLE && p2p->pending_channel) {
 204                 p2p_dbg(p2p, "Apply change in listen channel");
 205                 p2p->cfg->reg_class = p2p->pending_reg_class;
 206                 p2p->cfg->channel = p2p->pending_channel;
 207                 p2p->pending_reg_class = 0;
 208                 p2p->pending_channel = 0;
 209         }
 210 }
 211
 212
 213 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 214 {
 215         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 216                 p2p_state_txt(p2p->state), sec, usec);
 217         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 218         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 219 }
 220
 221
 222 void p2p_clear_timeout(struct p2p_data *p2p)
 223 {
 224         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 225         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 226 }
 227
 228
 229 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 230 {
 231         struct p2p_go_neg_results res;
 232         struct p2p_device *peer = p2p->go_neg_peer;
 233
 234         if (!peer)
 235                 return;
 236
 237         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 238         if (p2p->state != P2P_SEARCH) {
 239                 /*
 240                  * Clear timeouts related to GO Negotiation if no new p2p_find
 241                  * has been started.
 242                  */
 243                 p2p_clear_timeout(p2p);
 244                 p2p_set_state(p2p, P2P_IDLE);
 245         }
 246
 247         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 248         peer->wps_method = WPS_NOT_READY;
 249         peer->oob_pw_id = 0;
 250         wpabuf_free(peer->go_neg_conf);
 251         peer->go_neg_conf = NULL;
 252         p2p->go_neg_peer = NULL;
 253
 254         os_memset(&res, 0, sizeof(res));
 255         res.status = status;
 256         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 257         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 258         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 259 }
 260
 261
 262 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 263 {
 264         unsigned int r, tu;
 265         int freq;
 266         struct wpabuf *ies;
 267
 268         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 269                 p2p_state_txt(p2p->state));
 270
 271         if (p2p->pending_listen_freq) {
 272                 /* We have a pending p2p_listen request */
 273                 p2p_dbg(p2p, "p2p_listen command pending already");
 274                 return;
 275         }
 276
 277         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 278         if (freq < 0) {
 279                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 280                 return;
 281         }
 282
 283         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 284                 r = 0;
 285         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 286               p2p->min_disc_int) * 100;
 287         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 288                 tu = p2p->max_disc_tu;
 289         if (!dev_disc && tu < 100)
 290                 tu = 100; /* Need to wait in non-device discovery use cases */
 291         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 292                 tu = p2p->cfg->max_listen * 1000 / 1024;
 293
 294         if (tu == 0) {
 295                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 296                 p2p_set_timeout(p2p, 0, 0);
 297                 return;
 298         }
 299
 300         ies = p2p_build_probe_resp_ies(p2p);
 301         if (ies == NULL)
 302                 return;
 303
 304         p2p->pending_listen_freq = freq;
 305         p2p->pending_listen_sec = 0;
 306         p2p->pending_listen_usec = 1024 * tu;
 307
 308         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 309                     ies) < 0) {
 310                 p2p_dbg(p2p, "Failed to start listen mode");
 311                 p2p->pending_listen_freq = 0;
 312         }
 313         wpabuf_free(ies);
 314 }
 315
 316
 317 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 318 {
 319         int freq;
 320         struct wpabuf *ies;
 321
 322         p2p_dbg(p2p, "Going to listen(only) state");
 323
 324         if (p2p->pending_listen_freq) {
 325                 /* We have a pending p2p_listen request */
 326                 p2p_dbg(p2p, "p2p_listen command pending already");
 327                 return -1;
 328         }
 329
 330         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 331         if (freq < 0) {
 332                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 333                 return -1;
 334         }
 335
 336         p2p->pending_listen_sec = timeout / 1000;
 337         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 338
 339         if (p2p->p2p_scan_running) {
 340                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 341                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 342                         return 0;
 343                 }
 344                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 345                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 346                 return 0;
 347         }
 348
 349         ies = p2p_build_probe_resp_ies(p2p);
 350         if (ies == NULL)
 351                 return -1;
 352
 353         p2p->pending_listen_freq = freq;
 354
 355         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 356                 p2p_dbg(p2p, "Failed to start listen mode");
 357                 p2p->pending_listen_freq = 0;
 358                 wpabuf_free(ies);
 359                 return -1;
 360         }
 361         wpabuf_free(ies);
 362
 363         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 364
 365         return 0;
 366 }
 367
 368
 369 static void p2p_device_clear_reported(struct p2p_data *p2p)
 370 {
 371         struct p2p_device *dev;
 372         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 373                 dev->flags &= ~P2P_DEV_REPORTED;
 374                 dev->sd_reqs = 0;
 375         }
 376 }
 377
 378
 379 /**
 380  * p2p_get_device - Fetch a peer entry
 381  * @p2p: P2P module context from p2p_init()
 382  * @addr: P2P Device Address of the peer
 383  * Returns: Pointer to the device entry or %NULL if not found
 384  */
 385 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 386 {
 387         struct p2p_device *dev;
 388         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 389                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 390                         return dev;
 391         }
 392         return NULL;
 393 }
 394
 395
 396 /**
 397  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 398  * @p2p: P2P module context from p2p_init()
 399  * @addr: P2P Interface Address of the peer
 400  * Returns: Pointer to the device entry or %NULL if not found
 401  */
 402 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 403                                              const u8 *addr)
 404 {
 405         struct p2p_device *dev;
 406         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 407                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 408                         return dev;
 409         }
 410         return NULL;
 411 }
 412
 413
 414 /**
 415  * p2p_create_device - Create a peer entry
 416  * @p2p: P2P module context from p2p_init()
 417  * @addr: P2P Device Address of the peer
 418  * Returns: Pointer to the device entry or %NULL on failure
 419  *
 420  * If there is already an entry for the peer, it will be returned instead of
 421  * creating a new one.
 422  */
 423 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 424                                              const u8 *addr)
 425 {
 426         struct p2p_device *dev, *oldest = NULL;
 427         size_t count = 0;
 428
 429         dev = p2p_get_device(p2p, addr);
 430         if (dev)
 431                 return dev;
 432
 433         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 434                 count++;
 435                 if (oldest == NULL ||
 436                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 437                         oldest = dev;
 438         }
 439         if (count + 1 > p2p->cfg->max_peers && oldest) {
 440                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 441                 dl_list_del(&oldest->list);
 442                 p2p_device_free(p2p, oldest);
 443         }
 444
 445         dev = os_zalloc(sizeof(*dev));
 446         if (dev == NULL)
 447                 return NULL;
 448         dl_list_add(&p2p->devices, &dev->list);
 449         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 450
 451         return dev;
 452 }
 453
 454
 455 static void p2p_copy_client_info(struct p2p_device *dev,
 456                                  struct p2p_client_info *cli)
 457 {
 458         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 459         dev->info.device_name[cli->dev_name_len] = '\0';
 460         dev->info.dev_capab = cli->dev_capab;
 461         dev->info.config_methods = cli->config_methods;
 462         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 463         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 464         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 465                   dev->info.wps_sec_dev_type_list_len);
 466 }
 467
 468
 469 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 470                                  const u8 *go_interface_addr, int freq,
 471                                  const u8 *gi, size_t gi_len,
 472                                  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         }
 545
 546         return 0;
 547 }
 548
 549
 550 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 551                               int probe_req, const struct p2p_message *msg)
 552 {
 553         os_memcpy(dev->info.device_name, msg->device_name,
 554                   sizeof(dev->info.device_name));
 555
 556         if (msg->manufacturer &&
 557             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 558                 os_memset(dev->info.manufacturer, 0,
 559                           sizeof(dev->info.manufacturer));
 560                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 561                           msg->manufacturer_len);
 562         }
 563
 564         if (msg->model_name &&
 565             msg->model_name_len < sizeof(dev->info.model_name)) {
 566                 os_memset(dev->info.model_name, 0,
 567                           sizeof(dev->info.model_name));
 568                 os_memcpy(dev->info.model_name, msg->model_name,
 569                           msg->model_name_len);
 570         }
 571
 572         if (msg->model_number &&
 573             msg->model_number_len < sizeof(dev->info.model_number)) {
 574                 os_memset(dev->info.model_number, 0,
 575                           sizeof(dev->info.model_number));
 576                 os_memcpy(dev->info.model_number, msg->model_number,
 577                           msg->model_number_len);
 578         }
 579
 580         if (msg->serial_number &&
 581             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 582                 os_memset(dev->info.serial_number, 0,
 583                           sizeof(dev->info.serial_number));
 584                 os_memcpy(dev->info.serial_number, msg->serial_number,
 585                           msg->serial_number_len);
 586         }
 587
 588         if (msg->pri_dev_type)
 589                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 590                           sizeof(dev->info.pri_dev_type));
 591         else if (msg->wps_pri_dev_type)
 592                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 593                           sizeof(dev->info.pri_dev_type));
 594
 595         if (msg->wps_sec_dev_type_list) {
 596                 os_memcpy(dev->info.wps_sec_dev_type_list,
 597                           msg->wps_sec_dev_type_list,
 598                           msg->wps_sec_dev_type_list_len);
 599                 dev->info.wps_sec_dev_type_list_len =
 600                         msg->wps_sec_dev_type_list_len;
 601         }
 602
 603         if (msg->capability) {
 604                 /*
 605                  * P2P Client Discoverability bit is reserved in all frames
 606                  * that use this function, so do not change its value here.
 607                  */
 608                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 609                 dev->info.dev_capab |= msg->capability[0] &
 610                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 611                 dev->info.group_capab = msg->capability[1];
 612         }
 613
 614         if (msg->ext_listen_timing) {
 615                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 616                 dev->ext_listen_interval =
 617                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 618         }
 619
 620         if (!probe_req) {
 621                 u16 new_config_methods;
 622                 new_config_methods = msg->config_methods ?
 623                         msg->config_methods : msg->wps_config_methods;
 624                 if (new_config_methods &&
 625                     dev->info.config_methods != new_config_methods) {
 626                         p2p_dbg(p2p, "Update peer " MACSTR
 627                                 " config_methods 0x%x -> 0x%x",
 628                                 MAC2STR(dev->info.p2p_device_addr),
 629                                 dev->info.config_methods,
 630                                 new_config_methods);
 631                         dev->info.config_methods = new_config_methods;
 632                 }
 633         }
 634 }
 635
 636
 637 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 638                                          size_t ies_len)
 639 {
 640         const u8 *pos, *end;
 641         u8 id, len;
 642
 643         wpabuf_free(dev->info.vendor_elems);
 644         dev->info.vendor_elems = NULL;
 645
 646         end = ies + ies_len;
 647
 648         for (pos = ies; pos + 1 < end; pos += len) {
 649                 id = *pos++;
 650                 len = *pos++;
 651
 652                 if (pos + len > end)
 653                         break;
 654
 655                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 656                         continue;
 657
 658                 if (len >= 4) {
 659                         u32 type = WPA_GET_BE32(pos);
 660
 661                         if (type == WPA_IE_VENDOR_TYPE ||
 662                             type == WMM_IE_VENDOR_TYPE ||
 663                             type == WPS_IE_VENDOR_TYPE ||
 664                             type == P2P_IE_VENDOR_TYPE ||
 665                             type == WFD_IE_VENDOR_TYPE)
 666                                 continue;
 667                 }
 668
 669                 /* Unknown vendor element - make raw IE data available */
 670                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 671                         break;
 672                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 673         }
 674 }
 675
 676
 677 static int p2p_compare_wfd_info(struct p2p_device *dev,
 678                               const struct p2p_message *msg)
 679 {
 680         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 681                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 682                         return 1;
 683
 684                 return os_memcmp(dev->info.wfd_subelems->buf,
 685                                  msg->wfd_subelems->buf,
 686                                  dev->info.wfd_subelems->used);
 687         }
 688         if (dev->info.wfd_subelems || msg->wfd_subelems)
 689                 return 1;
 690
 691         return 0;
 692 }
 693
 694
 695 /**
 696  * p2p_add_device - Add peer entries based on scan results or P2P frames
 697  * @p2p: P2P module context from p2p_init()
 698  * @addr: Source address of Beacon or Probe Response frame (may be either
 699  *      P2P Device Address or P2P Interface Address)
 700  * @level: Signal level (signal strength of the received frame from the peer)
 701  * @freq: Frequency on which the Beacon or Probe Response frame was received
 702  * @rx_time: Time when the result was received
 703  * @ies: IEs from the Beacon or Probe Response frame
 704  * @ies_len: Length of ies buffer in octets
 705  * @scan_res: Whether this was based on scan results
 706  * Returns: 0 on success, -1 on failure
 707  *
 708  * If the scan result is for a GO, the clients in the group will also be added
 709  * to the peer table. This function can also be used with some other frames
 710  * like Provision Discovery Request that contains P2P Capability and P2P Device
 711  * Info attributes.
 712  */
 713 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 714                    struct os_reltime *rx_time, int level, const u8 *ies,
 715                    size_t ies_len, int scan_res)
 716 {
 717         struct p2p_device *dev;
 718         struct p2p_message msg;
 719         const u8 *p2p_dev_addr;
 720         int wfd_changed;
 721         int i;
 722         struct os_reltime time_now;
 723
 724         os_memset(&msg, 0, sizeof(msg));
 725         if (p2p_parse_ies(ies, ies_len, &msg)) {
 726                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 727                 p2p_parse_free(&msg);
 728                 return -1;
 729         }
 730
 731         if (msg.p2p_device_addr)
 732                 p2p_dev_addr = msg.p2p_device_addr;
 733         else if (msg.device_id)
 734                 p2p_dev_addr = msg.device_id;
 735         else {
 736                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 737                 p2p_parse_free(&msg);
 738                 return -1;
 739         }
 740
 741         if (!is_zero_ether_addr(p2p->peer_filter) &&
 742             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 743                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 744                         " due to peer filter", MAC2STR(p2p_dev_addr));
 745                 p2p_parse_free(&msg);
 746                 return 0;
 747         }
 748
 749         dev = p2p_create_device(p2p, p2p_dev_addr);
 750         if (dev == NULL) {
 751                 p2p_parse_free(&msg);
 752                 return -1;
 753         }
 754
 755         if (rx_time == NULL) {
 756                 os_get_reltime(&time_now);
 757                 rx_time = &time_now;
 758         }
 759
 760         /*
 761          * Update the device entry only if the new peer
 762          * entry is newer than the one previously stored.
 763          */
 764         if (dev->last_seen.sec > 0 &&
 765             os_reltime_before(rx_time, &dev->last_seen)) {
 766                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 767                         (unsigned int) rx_time->sec,
 768                         (unsigned int) rx_time->usec,
 769                         (unsigned int) dev->last_seen.sec,
 770                         (unsigned int) dev->last_seen.usec);
 771                 p2p_parse_free(&msg);
 772                 return -1;
 773         }
 774
 775         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 776
 777         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 778
 779         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 780                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 781         if (msg.ssid &&
 782             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 783             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 784              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 785              != 0)) {
 786                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 787                 dev->oper_ssid_len = msg.ssid[1];
 788         }
 789
 790         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 791                 wpabuf_free(dev->info.p2ps_instance);
 792                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 793                         msg.adv_service_instance, msg.adv_service_instance_len);
 794         }
 795
 796         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 797             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 798                 int ds_freq;
 799                 if (*msg.ds_params == 14)
 800                         ds_freq = 2484;
 801                 else
 802                         ds_freq = 2407 + *msg.ds_params * 5;
 803                 if (freq != ds_freq) {
 804                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 805                                 freq, ds_freq);
 806                         freq = ds_freq;
 807                 }
 808         }
 809
 810         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 811                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 812                         MACSTR " %d -> %d MHz (DS param %d)",
 813                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 814                         freq, msg.ds_params ? *msg.ds_params : -1);
 815         }
 816         if (scan_res) {
 817                 dev->listen_freq = freq;
 818                 if (msg.group_info)
 819                         dev->oper_freq = freq;
 820         }
 821         dev->info.level = level;
 822
 823         p2p_copy_wps_info(p2p, dev, 0, &msg);
 824
 825         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 826                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 827                 dev->info.wps_vendor_ext[i] = NULL;
 828         }
 829
 830         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 831                 if (msg.wps_vendor_ext[i] == NULL)
 832                         break;
 833                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 834                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 835                 if (dev->info.wps_vendor_ext[i] == NULL)
 836                         break;
 837         }
 838
 839         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 840
 841         if (msg.wfd_subelems) {
 842                 wpabuf_free(dev->info.wfd_subelems);
 843                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 844         }
 845
 846         if (scan_res) {
 847                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 848                                       msg.group_info, msg.group_info_len,
 849                                       rx_time);
 850         }
 851
 852         p2p_parse_free(&msg);
 853
 854         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 855
 856         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 857             (!msg.adv_service_instance ||
 858              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 859                 return 0;
 860
 861         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 862                 freq, (unsigned int) rx_time->sec,
 863                 (unsigned int) rx_time->usec);
 864         if (dev->flags & P2P_DEV_USER_REJECTED) {
 865                 p2p_dbg(p2p, "Do not report rejected device");
 866                 return 0;
 867         }
 868
 869         if (dev->info.config_methods == 0 &&
 870             (freq == 2412 || freq == 2437 || freq == 2462)) {
 871                 /*
 872                  * If we have only seen a Beacon frame from a GO, we do not yet
 873                  * know what WPS config methods it supports. Since some
 874                  * applications use config_methods value from P2P-DEVICE-FOUND
 875                  * events, postpone reporting this peer until we've fully
 876                  * discovered its capabilities.
 877                  *
 878                  * At least for now, do this only if the peer was detected on
 879                  * one of the social channels since that peer can be easily be
 880                  * found again and there are no limitations of having to use
 881                  * passive scan on this channels, so this can be done through
 882                  * Probe Response frame that includes the config_methods
 883                  * information.
 884                  */
 885                 p2p_dbg(p2p, "Do not report peer " MACSTR
 886                         " with unknown config methods", MAC2STR(addr));
 887                 return 0;
 888         }
 889
 890         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 891                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 892         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 893
 894         if (msg.adv_service_instance)
 895                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 896
 897         return 0;
 898 }
 899
 900
 901 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 902 {
 903         int i;
 904
 905         if (p2p->go_neg_peer == dev) {
 906                 /*
 907                  * If GO Negotiation is in progress, report that it has failed.
 908                  */
 909                 p2p_go_neg_failed(p2p, -1);
 910         }
 911         if (p2p->invite_peer == dev)
 912                 p2p->invite_peer = NULL;
 913         if (p2p->sd_peer == dev)
 914                 p2p->sd_peer = NULL;
 915         if (p2p->pending_client_disc_go == dev)
 916                 p2p->pending_client_disc_go = NULL;
 917
 918         /* dev_lost() device, but only if it was previously dev_found() */
 919         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 920                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 921                                    dev->info.p2p_device_addr);
 922
 923         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 924                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 925                 dev->info.wps_vendor_ext[i] = NULL;
 926         }
 927
 928         wpabuf_free(dev->info.wfd_subelems);
 929         wpabuf_free(dev->info.vendor_elems);
 930         wpabuf_free(dev->go_neg_conf);
 931         wpabuf_free(dev->info.p2ps_instance);
 932
 933         os_free(dev);
 934 }
 935
 936
 937 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 938 {
 939         struct p2p_channels *c;
 940         struct p2p_reg_class *cla;
 941         size_t cl, ch;
 942         int found = 0;
 943         u8 reg_class;
 944         u8 channel;
 945         int freq;
 946
 947         c = &p2p->cfg->channels;
 948         for (cl = 0; cl < c->reg_classes; cl++) {
 949                 cla = &c->reg_class[cl];
 950                 if (cla->reg_class != p2p->last_prog_scan_class)
 951                         continue;
 952                 for (ch = 0; ch < cla->channels; ch++) {
 953                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 954                                 found = 1;
 955                                 break;
 956                         }
 957                 }
 958                 if (found)
 959                         break;
 960         }
 961
 962         if (!found) {
 963                 /* Start from beginning */
 964                 reg_class = c->reg_class[0].reg_class;
 965                 channel = c->reg_class[0].channel[0];
 966         } else {
 967                 /* Pick the next channel */
 968                 ch++;
 969                 if (ch == cla->channels) {
 970                         cl++;
 971                         if (cl == c->reg_classes)
 972                                 cl = 0;
 973                         ch = 0;
 974                 }
 975                 reg_class = c->reg_class[cl].reg_class;
 976                 channel = c->reg_class[cl].channel[ch];
 977         }
 978
 979         freq = p2p_channel_to_freq(reg_class, channel);
 980         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 981                 reg_class, channel, freq);
 982         p2p->last_prog_scan_class = reg_class;
 983         p2p->last_prog_scan_chan = channel;
 984
 985         if (freq == 2412 || freq == 2437 || freq == 2462)
 986                 return 0; /* No need to add social channels */
 987         return freq;
 988 }
 989
 990
 991 static void p2p_search(struct p2p_data *p2p)
 992 {
 993         int freq = 0;
 994         enum p2p_scan_type type;
 995         u16 pw_id = DEV_PW_DEFAULT;
 996         int res;
 997
 998         if (p2p->drv_in_listen) {
 999                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1000                 return;
1001         }
1002         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1003
1004         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1005             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1006                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1007                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1008         } else {
1009                 type = P2P_SCAN_SOCIAL;
1010                 p2p_dbg(p2p, "Starting search");
1011         }
1012
1013         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1014                                  p2p->num_req_dev_types, p2p->req_dev_types,
1015                                  p2p->find_dev_id, pw_id);
1016         if (res < 0) {
1017                 p2p_dbg(p2p, "Scan request schedule failed");
1018                 p2p_continue_find(p2p);
1019         }
1020 }
1021
1022
1023 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1024 {
1025         struct p2p_data *p2p = eloop_ctx;
1026         p2p_dbg(p2p, "Find timeout -> stop");
1027         p2p_stop_find(p2p);
1028 }
1029
1030
1031 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1032 {
1033         if (status != 0) {
1034                 p2p_dbg(p2p, "Scan request failed");
1035                 /* Do continue find even for the first p2p_find_scan */
1036                 p2p_continue_find(p2p);
1037         } else {
1038                 p2p_dbg(p2p, "Running p2p_scan");
1039                 p2p->p2p_scan_running = 1;
1040                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1041                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1042                                        p2p, NULL);
1043         }
1044 }
1045
1046
1047 static int p2p_run_after_scan(struct p2p_data *p2p)
1048 {
1049         struct p2p_device *dev;
1050         enum p2p_after_scan op;
1051
1052         if (p2p->after_scan_tx) {
1053                 p2p->after_scan_tx_in_progress = 1;
1054                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1055                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1056                                       p2p->after_scan_tx->freq,
1057                                       p2p->after_scan_tx->dst,
1058                                       p2p->after_scan_tx->src,
1059                                       p2p->after_scan_tx->bssid,
1060                                       (u8 *) (p2p->after_scan_tx + 1),
1061                                       p2p->after_scan_tx->len,
1062                                       p2p->after_scan_tx->wait_time);
1063                 os_free(p2p->after_scan_tx);
1064                 p2p->after_scan_tx = NULL;
1065                 return 1;
1066         }
1067
1068         op = p2p->start_after_scan;
1069         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1070         switch (op) {
1071         case P2P_AFTER_SCAN_NOTHING:
1072                 break;
1073         case P2P_AFTER_SCAN_LISTEN:
1074                 p2p_dbg(p2p, "Start previously requested Listen state");
1075                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1076                            p2p->pending_listen_usec / 1000);
1077                 return 1;
1078         case P2P_AFTER_SCAN_CONNECT:
1079                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1080                         MAC2STR(p2p->after_scan_peer));
1081                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1082                 if (dev == NULL) {
1083                         p2p_dbg(p2p, "Peer not known anymore");
1084                         break;
1085                 }
1086                 p2p_connect_send(p2p, dev);
1087                 return 1;
1088         }
1089
1090         return 0;
1091 }
1092
1093
1094 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1095 {
1096         struct p2p_data *p2p = eloop_ctx;
1097         int running;
1098         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1099         running = p2p->p2p_scan_running;
1100         /* Make sure we recover from missed scan results callback */
1101         p2p->p2p_scan_running = 0;
1102
1103         if (running)
1104                 p2p_run_after_scan(p2p);
1105 }
1106
1107
1108 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1109 {
1110         p2p->num_req_dev_types = 0;
1111         os_free(p2p->req_dev_types);
1112         p2p->req_dev_types = NULL;
1113 }
1114
1115
1116 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1117 {
1118         u8 buf[SHA256_MAC_LEN];
1119         char str_buf[256];
1120         const u8 *adv_array;
1121         size_t i, adv_len;
1122
1123         if (!str || !hash)
1124                 return 0;
1125
1126         if (!str[0]) {
1127                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1128                 return 1;
1129         }
1130
1131         adv_array = (u8 *) str_buf;
1132         adv_len = os_strlen(str);
1133
1134         for (i = 0; str[i] && i < adv_len; i++) {
1135                 if (str[i] >= 'A' && str[i] <= 'Z')
1136                         str_buf[i] = str[i] - 'A' + 'a';
1137                 else
1138                         str_buf[i] = str[i];
1139         }
1140
1141         if (sha256_vector(1, &adv_array, &adv_len, buf))
1142                 return 0;
1143
1144         os_memcpy(hash, buf, P2PS_HASH_LEN);
1145         return 1;
1146 }
1147
1148
1149 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1150              enum p2p_discovery_type type,
1151              unsigned int num_req_dev_types, const u8 *req_dev_types,
1152              const u8 *dev_id, unsigned int search_delay,
1153              u8 seek_count, const char **seek, int freq)
1154 {
1155         int res;
1156
1157         p2p_dbg(p2p, "Starting find (type=%d)", type);
1158         os_get_reltime(&p2p->find_start);
1159         if (p2p->p2p_scan_running) {
1160                 p2p_dbg(p2p, "p2p_scan is already running");
1161         }
1162
1163         p2p_free_req_dev_types(p2p);
1164         if (req_dev_types && num_req_dev_types) {
1165                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1166                                                WPS_DEV_TYPE_LEN);
1167                 if (p2p->req_dev_types == NULL)
1168                         return -1;
1169                 os_memcpy(p2p->req_dev_types, req_dev_types,
1170                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1171                 p2p->num_req_dev_types = num_req_dev_types;
1172         }
1173
1174         if (dev_id) {
1175                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1176                 p2p->find_dev_id = p2p->find_dev_id_buf;
1177         } else
1178                 p2p->find_dev_id = NULL;
1179
1180         if (seek_count == 0 || !seek) {
1181                 /* Not an ASP search */
1182                 p2p->p2ps_seek = 0;
1183         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1184                 /*
1185                  * An empty seek string means no hash values, but still an ASP
1186                  * search.
1187                  */
1188                 p2p->p2ps_seek_count = 0;
1189                 p2p->p2ps_seek = 1;
1190         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1191                 u8 buf[P2PS_HASH_LEN];
1192                 int i;
1193
1194                 p2p->p2ps_seek_count = seek_count;
1195                 for (i = 0; i < seek_count; i++) {
1196                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1197                                 continue;
1198
1199                         /* If asking for wildcard, don't do others */
1200                         if (os_memcmp(buf, p2p->wild_card_hash,
1201                                       P2PS_HASH_LEN) == 0) {
1202                                 p2p->p2ps_seek_count = 0;
1203                                 break;
1204                         }
1205
1206                         os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1207                                   P2PS_HASH_LEN);
1208                 }
1209                 p2p->p2ps_seek = 1;
1210         } else {
1211                 p2p->p2ps_seek_count = 0;
1212                 p2p->p2ps_seek = 1;
1213         }
1214
1215         /* Special case to perform wildcard search */
1216         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1217                 p2p->p2ps_seek_count = 1;
1218                 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1219         }
1220
1221         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1222         p2p_clear_timeout(p2p);
1223         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1224         p2p->find_type = type;
1225         p2p_device_clear_reported(p2p);
1226         p2p_set_state(p2p, P2P_SEARCH);
1227         p2p->search_delay = search_delay;
1228         p2p->in_search_delay = 0;
1229         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1230         p2p->last_p2p_find_timeout = timeout;
1231         if (timeout)
1232                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1233                                        p2p, NULL);
1234         switch (type) {
1235         case P2P_FIND_START_WITH_FULL:
1236                 if (freq > 0) {
1237                         /*
1238                          * Start with the specified channel and then move to
1239                          * social channels only scans.
1240                          */
1241                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1242                                                  P2P_SCAN_SPECIFIC, freq,
1243                                                  p2p->num_req_dev_types,
1244                                                  p2p->req_dev_types, dev_id,
1245                                                  DEV_PW_DEFAULT);
1246                         break;
1247                 }
1248                 /* fall through */
1249         case P2P_FIND_PROGRESSIVE:
1250                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1251                                          p2p->num_req_dev_types,
1252                                          p2p->req_dev_types, dev_id,
1253                                          DEV_PW_DEFAULT);
1254                 break;
1255         case P2P_FIND_ONLY_SOCIAL:
1256                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1257                                          p2p->num_req_dev_types,
1258                                          p2p->req_dev_types, dev_id,
1259                                          DEV_PW_DEFAULT);
1260                 break;
1261         default:
1262                 return -1;
1263         }
1264
1265         if (res != 0 && p2p->p2p_scan_running) {
1266                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1267                 /* wait for the previous p2p_scan to complete */
1268                 res = 0; /* do not report failure */
1269         } else if (res != 0) {
1270                 p2p_dbg(p2p, "Failed to start p2p_scan");
1271                 p2p_set_state(p2p, P2P_IDLE);
1272                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1273         }
1274
1275         return res;
1276 }
1277
1278
1279 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1280 {
1281         p2p_dbg(p2p, "Stopping find");
1282         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1283         p2p_clear_timeout(p2p);
1284         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1285                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1286
1287         p2p->p2ps_seek_count = 0;
1288
1289         p2p_set_state(p2p, P2P_IDLE);
1290         p2p_free_req_dev_types(p2p);
1291         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1292         if (p2p->go_neg_peer)
1293                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1294         p2p->go_neg_peer = NULL;
1295         p2p->sd_peer = NULL;
1296         p2p->invite_peer = NULL;
1297         p2p_stop_listen_for_freq(p2p, freq);
1298         p2p->send_action_in_progress = 0;
1299 }
1300
1301
1302 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1303 {
1304         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1305                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1306                 return;
1307         }
1308         if (p2p->in_listen) {
1309                 p2p->in_listen = 0;
1310                 p2p_clear_timeout(p2p);
1311         }
1312         if (p2p->drv_in_listen) {
1313                 /*
1314                  * The driver may not deliver callback to p2p_listen_end()
1315                  * when the operation gets canceled, so clear the internal
1316                  * variable that is tracking driver state.
1317                  */
1318                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1319                 p2p->drv_in_listen = 0;
1320         }
1321         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1322 }
1323
1324
1325 void p2p_stop_listen(struct p2p_data *p2p)
1326 {
1327         if (p2p->state != P2P_LISTEN_ONLY) {
1328                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1329                 return;
1330         }
1331
1332         p2p_stop_listen_for_freq(p2p, 0);
1333         p2p_set_state(p2p, P2P_IDLE);
1334 }
1335
1336
1337 void p2p_stop_find(struct p2p_data *p2p)
1338 {
1339         p2p->pending_listen_freq = 0;
1340         p2p_stop_find_for_freq(p2p, 0);
1341 }
1342
1343
1344 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1345                                     unsigned int force_freq,
1346                                     unsigned int pref_freq, int go)
1347 {
1348         u8 op_class, op_channel;
1349         unsigned int freq = force_freq ? force_freq : pref_freq;
1350
1351         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1352                 force_freq, pref_freq, go);
1353         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1354                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1355                 return -1;
1356         }
1357
1358         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1359             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1360                                           op_channel))) {
1361                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1362                         freq, op_class, op_channel);
1363                 return -1;
1364         }
1365
1366         p2p->op_reg_class = op_class;
1367         p2p->op_channel = op_channel;
1368
1369         if (force_freq) {
1370                 p2p->channels.reg_classes = 1;
1371                 p2p->channels.reg_class[0].channels = 1;
1372                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1373                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1374         } else {
1375                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1376                           sizeof(struct p2p_channels));
1377         }
1378
1379         return 0;
1380 }
1381
1382
1383 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1384 {
1385         u8 op_class, op_channel;
1386         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1387         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1388         const int op_classes_vht[] = { 128, 0 };
1389
1390         p2p_dbg(p2p, "Prepare channel best");
1391
1392         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1393             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1394             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1395             == 0) {
1396                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1397                 p2p->op_reg_class = op_class;
1398                 p2p->op_channel = op_channel;
1399         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1400                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1401                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1402                    == 0) {
1403                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1404                 p2p->op_reg_class = op_class;
1405                 p2p->op_channel = op_channel;
1406         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1407                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1408                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1409                                        &op_channel) == 0) {
1410                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1411                 p2p->op_reg_class = op_class;
1412                 p2p->op_channel = op_channel;
1413         } else if (p2p->cfg->num_pref_chan > 0 &&
1414                    p2p_channels_includes(&p2p->cfg->channels,
1415                                          p2p->cfg->pref_chan[0].op_class,
1416                                          p2p->cfg->pref_chan[0].chan)) {
1417                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1418                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1419                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1420         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1421                                       &p2p->op_reg_class, &p2p->op_channel) ==
1422                    0) {
1423                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1424                         p2p->op_reg_class, p2p->op_channel);
1425         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1426                                       &p2p->op_reg_class, &p2p->op_channel) ==
1427                    0) {
1428                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1429                         p2p->op_reg_class, p2p->op_channel);
1430         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1431                                       &p2p->op_reg_class, &p2p->op_channel) ==
1432                    0) {
1433                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1434                         p2p->op_reg_class, p2p->op_channel);
1435         } else if (p2p_channels_includes(&p2p->cfg->channels,
1436                                          p2p->cfg->op_reg_class,
1437                                          p2p->cfg->op_channel)) {
1438                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1439                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1440                 p2p->op_channel = p2p->cfg->op_channel;
1441         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1442                                              &p2p->op_reg_class,
1443                                              &p2p->op_channel) == 0) {
1444                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1445                         p2p->op_reg_class, p2p->op_channel);
1446         } else {
1447                 /* Select any random available channel from the first available
1448                  * operating class */
1449                 p2p_channel_select(&p2p->cfg->channels, NULL,
1450                                    &p2p->op_reg_class,
1451                                    &p2p->op_channel);
1452                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1453                         p2p->op_channel, p2p->op_reg_class);
1454         }
1455
1456         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1457                   sizeof(struct p2p_channels));
1458 }
1459
1460
1461 /**
1462  * p2p_prepare_channel - Select operating channel for GO Negotiation
1463  * @p2p: P2P module context from p2p_init()
1464  * @dev: Selected peer device
1465  * @force_freq: Forced frequency in MHz or 0 if not forced
1466  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1467  * @go: Whether the local end will be forced to be GO
1468  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1469  *
1470  * This function is used to do initial operating channel selection for GO
1471  * Negotiation prior to having received peer information. The selected channel
1472  * may be further optimized in p2p_reselect_channel() once the peer information
1473  * is available.
1474  */
1475 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1476                         unsigned int force_freq, unsigned int pref_freq, int go)
1477 {
1478         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1479                 force_freq, pref_freq, go);
1480         if (force_freq || pref_freq) {
1481                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1482                     0)
1483                         return -1;
1484         } else {
1485                 p2p_prepare_channel_best(p2p);
1486         }
1487         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1488         if (go)
1489                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1490         else if (!force_freq)
1491                 p2p_channels_union_inplace(&p2p->channels,
1492                                            &p2p->cfg->cli_channels);
1493         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1494
1495         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1496                 p2p->op_reg_class, p2p->op_channel,
1497                 force_freq ? " (forced)" : "");
1498
1499         if (force_freq)
1500                 dev->flags |= P2P_DEV_FORCE_FREQ;
1501         else
1502                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1503
1504         return 0;
1505 }
1506
1507
1508 static void p2p_set_dev_persistent(struct p2p_device *dev,
1509                                    int persistent_group)
1510 {
1511         switch (persistent_group) {
1512         case 0:
1513                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1514                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1515                 break;
1516         case 1:
1517                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1518                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1519                 break;
1520         case 2:
1521                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1522                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1523                 break;
1524         }
1525 }
1526
1527
1528 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1529                 enum p2p_wps_method wps_method,
1530                 int go_intent, const u8 *own_interface_addr,
1531                 unsigned int force_freq, int persistent_group,
1532                 const u8 *force_ssid, size_t force_ssid_len,
1533                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1534 {
1535         struct p2p_device *dev;
1536
1537         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1538                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1539                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1540                 "oob_pw_id=%u",
1541                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1542                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1543
1544         dev = p2p_get_device(p2p, peer_addr);
1545         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1546                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1547                         MAC2STR(peer_addr));
1548                 return -1;
1549         }
1550
1551         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1552                                 go_intent == 15) < 0)
1553                 return -1;
1554
1555         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1556                 if (!(dev->info.dev_capab &
1557                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1558                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1559                                 " that is in a group and is not discoverable",
1560                                 MAC2STR(peer_addr));
1561                         return -1;
1562                 }
1563                 if (dev->oper_freq <= 0) {
1564                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1565                                 " with incomplete information",
1566                                 MAC2STR(peer_addr));
1567                         return -1;
1568                 }
1569
1570                 /*
1571                  * First, try to connect directly. If the peer does not
1572                  * acknowledge frames, assume it is sleeping and use device
1573                  * discoverability via the GO at that point.
1574                  */
1575         }
1576
1577         p2p->ssid_set = 0;
1578         if (force_ssid) {
1579                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1580                                   force_ssid, force_ssid_len);
1581                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1582                 p2p->ssid_len = force_ssid_len;
1583                 p2p->ssid_set = 1;
1584         }
1585
1586         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1587         dev->flags &= ~P2P_DEV_USER_REJECTED;
1588         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1589         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1590         if (pd_before_go_neg)
1591                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1592         else {
1593                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1594                 /*
1595                  * Assign dialog token and tie breaker here to use the same
1596                  * values in each retry within the same GO Negotiation exchange.
1597                  */
1598                 dev->dialog_token++;
1599                 if (dev->dialog_token == 0)
1600                         dev->dialog_token = 1;
1601                 dev->tie_breaker = p2p->next_tie_breaker;
1602                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1603         }
1604         dev->connect_reqs = 0;
1605         dev->go_neg_req_sent = 0;
1606         dev->go_state = UNKNOWN_GO;
1607         p2p_set_dev_persistent(dev, persistent_group);
1608         p2p->go_intent = go_intent;
1609         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1610
1611         if (p2p->state != P2P_IDLE)
1612                 p2p_stop_find(p2p);
1613
1614         if (p2p->after_scan_tx) {
1615                 /*
1616                  * We need to drop the pending frame to avoid issues with the
1617                  * new GO Negotiation, e.g., when the pending frame was from a
1618                  * previous attempt at starting a GO Negotiation.
1619                  */
1620                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1621                 os_free(p2p->after_scan_tx);
1622                 p2p->after_scan_tx = NULL;
1623         }
1624
1625         dev->wps_method = wps_method;
1626         dev->oob_pw_id = oob_pw_id;
1627         dev->status = P2P_SC_SUCCESS;
1628
1629         if (p2p->p2p_scan_running) {
1630                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1631                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1632                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1633                 return 0;
1634         }
1635         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1636
1637         return p2p_connect_send(p2p, dev);
1638 }
1639
1640
1641 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1642                   enum p2p_wps_method wps_method,
1643                   int go_intent, const u8 *own_interface_addr,
1644                   unsigned int force_freq, int persistent_group,
1645                   const u8 *force_ssid, size_t force_ssid_len,
1646                   unsigned int pref_freq, u16 oob_pw_id)
1647 {
1648         struct p2p_device *dev;
1649
1650         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1651                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1652                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1653                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1654                 wps_method, persistent_group, oob_pw_id);
1655
1656         dev = p2p_get_device(p2p, peer_addr);
1657         if (dev == NULL) {
1658                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1659                         MAC2STR(peer_addr));
1660                 return -1;
1661         }
1662
1663         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1664                                 15) < 0)
1665                 return -1;
1666
1667         p2p->ssid_set = 0;
1668         if (force_ssid) {
1669                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1670                                   force_ssid, force_ssid_len);
1671                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1672                 p2p->ssid_len = force_ssid_len;
1673                 p2p->ssid_set = 1;
1674         }
1675
1676         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1677         dev->flags &= ~P2P_DEV_USER_REJECTED;
1678         dev->go_neg_req_sent = 0;
1679         dev->go_state = UNKNOWN_GO;
1680         p2p_set_dev_persistent(dev, persistent_group);
1681         p2p->go_intent = go_intent;
1682         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1683
1684         dev->wps_method = wps_method;
1685         dev->oob_pw_id = oob_pw_id;
1686         dev->status = P2P_SC_SUCCESS;
1687
1688         return 0;
1689 }
1690
1691
1692 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1693                       struct p2p_device *dev, struct p2p_message *msg)
1694 {
1695         os_get_reltime(&dev->last_seen);
1696
1697         p2p_copy_wps_info(p2p, dev, 0, msg);
1698
1699         if (msg->listen_channel) {
1700                 int freq;
1701                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1702                                            msg->listen_channel[4]);
1703                 if (freq < 0) {
1704                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1705                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1706                                 msg->listen_channel[0],
1707                                 msg->listen_channel[1],
1708                                 msg->listen_channel[2],
1709                                 msg->listen_channel[3],
1710                                 msg->listen_channel[4]);
1711                 } else {
1712                         p2p_dbg(p2p, "Update peer " MACSTR
1713                                 " Listen channel: %u -> %u MHz",
1714                                 MAC2STR(dev->info.p2p_device_addr),
1715                                 dev->listen_freq, freq);
1716                         dev->listen_freq = freq;
1717                 }
1718         }
1719
1720         if (msg->wfd_subelems) {
1721                 wpabuf_free(dev->info.wfd_subelems);
1722                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1723         }
1724
1725         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1726                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1727                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1728         } else {
1729                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1730                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1731                         "listen_freq=%d",
1732                         MAC2STR(dev->info.p2p_device_addr),
1733                         dev->info.dev_capab, dev->info.group_capab,
1734                         dev->info.device_name, dev->listen_freq);
1735         }
1736
1737         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1738
1739         if (dev->flags & P2P_DEV_USER_REJECTED) {
1740                 p2p_dbg(p2p, "Do not report rejected device");
1741                 return;
1742         }
1743
1744         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1745                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1746         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1747 }
1748
1749
1750 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1751 {
1752         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1753         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1754         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1755                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1756         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1757 }
1758
1759
1760 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1761 {
1762         if (p2p->ssid_set) {
1763                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1764                 params->ssid_len = p2p->ssid_len;
1765         } else {
1766                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1767         }
1768         p2p->ssid_set = 0;
1769
1770         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1771         return 0;
1772 }
1773
1774
1775 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1776 {
1777         struct p2p_go_neg_results res;
1778         int go = peer->go_state == LOCAL_GO;
1779         struct p2p_channels intersection;
1780
1781         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1782                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1783
1784         os_memset(&res, 0, sizeof(res));
1785         res.role_go = go;
1786         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1787         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1788         res.wps_method = peer->wps_method;
1789         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1790                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1791                         res.persistent_group = 2;
1792                 else
1793                         res.persistent_group = 1;
1794         }
1795
1796         if (go) {
1797                 /* Setup AP mode for WPS provisioning */
1798                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1799                                                p2p->op_channel);
1800                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1801                 res.ssid_len = p2p->ssid_len;
1802                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1803         } else {
1804                 res.freq = peer->oper_freq;
1805                 if (p2p->ssid_len) {
1806                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1807                         res.ssid_len = p2p->ssid_len;
1808                 }
1809         }
1810
1811         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1812         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1813         p2p_channels_intersect(&p2p->channels, &peer->channels,
1814                                &intersection);
1815         if (go) {
1816                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1817                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1818                                   &intersection);
1819         }
1820
1821         p2p_channels_to_freqs(&intersection, res.freq_list,
1822                               P2P_MAX_CHANNELS);
1823
1824         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1825
1826         p2p_clear_timeout(p2p);
1827         p2p->ssid_set = 0;
1828         peer->go_neg_req_sent = 0;
1829         peer->wps_method = WPS_NOT_READY;
1830         peer->oob_pw_id = 0;
1831         wpabuf_free(peer->go_neg_conf);
1832         peer->go_neg_conf = NULL;
1833
1834         p2p_set_state(p2p, P2P_PROVISIONING);
1835         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1836 }
1837
1838
1839 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1840                               const u8 *data, size_t len, int rx_freq)
1841 {
1842         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1843         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1844
1845         if (len < 1)
1846                 return;
1847
1848         switch (data[0]) {
1849         case P2P_GO_NEG_REQ:
1850                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1851                 break;
1852         case P2P_GO_NEG_RESP:
1853                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1854                 break;
1855         case P2P_GO_NEG_CONF:
1856                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1857                 break;
1858         case P2P_INVITATION_REQ:
1859                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1860                                            rx_freq);
1861                 break;
1862         case P2P_INVITATION_RESP:
1863                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1864                 break;
1865         case P2P_PROV_DISC_REQ:
1866                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1867                 break;
1868         case P2P_PROV_DISC_RESP:
1869                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1870                 break;
1871         case P2P_DEV_DISC_REQ:
1872                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1873                 break;
1874         case P2P_DEV_DISC_RESP:
1875                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1876                 break;
1877         default:
1878                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1879                         data[0]);
1880                 break;
1881         }
1882 }
1883
1884
1885 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1886                                  const u8 *sa, const u8 *bssid, const u8 *data,
1887                                  size_t len, int freq)
1888 {
1889         if (len < 1)
1890                 return;
1891
1892         switch (data[0]) {
1893         case WLAN_PA_VENDOR_SPECIFIC:
1894                 data++;
1895                 len--;
1896                 if (len < 4)
1897                         return;
1898                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1899                         return;
1900
1901                 data += 4;
1902                 len -= 4;
1903
1904                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1905                 break;
1906         case WLAN_PA_GAS_INITIAL_REQ:
1907                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1908                 break;
1909         case WLAN_PA_GAS_INITIAL_RESP:
1910                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1911                 break;
1912         case WLAN_PA_GAS_COMEBACK_REQ:
1913                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1914                 break;
1915         case WLAN_PA_GAS_COMEBACK_RESP:
1916                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1917                 break;
1918         }
1919 }
1920
1921
1922 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1923                    const u8 *bssid, u8 category,
1924                    const u8 *data, size_t len, int freq)
1925 {
1926         if (category == WLAN_ACTION_PUBLIC) {
1927                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1928                 return;
1929         }
1930
1931         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1932                 return;
1933
1934         if (len < 4)
1935                 return;
1936
1937         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1938                 return;
1939         data += 4;
1940         len -= 4;
1941
1942         /* P2P action frame */
1943         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1944         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1945
1946         if (len < 1)
1947                 return;
1948         switch (data[0]) {
1949         case P2P_NOA:
1950                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1951                 /* TODO */
1952                 break;
1953         case P2P_PRESENCE_REQ:
1954                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1955                 break;
1956         case P2P_PRESENCE_RESP:
1957                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1958                 break;
1959         case P2P_GO_DISC_REQ:
1960                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1961                 break;
1962         default:
1963                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1964                 break;
1965         }
1966 }
1967
1968
1969 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1970 {
1971         struct p2p_data *p2p = eloop_ctx;
1972         if (p2p->go_neg_peer == NULL)
1973                 return;
1974         if (p2p->pending_listen_freq) {
1975                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1976                 p2p->pending_listen_freq = 0;
1977         }
1978         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1979         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1980         /*
1981          * Set new timeout to make sure a previously set one does not expire
1982          * too quickly while waiting for the GO Negotiation to complete.
1983          */
1984         p2p_set_timeout(p2p, 0, 500000);
1985         p2p_connect_send(p2p, p2p->go_neg_peer);
1986 }
1987
1988
1989 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1990 {
1991         struct p2p_data *p2p = eloop_ctx;
1992         if (p2p->invite_peer == NULL)
1993                 return;
1994         if (p2p->pending_listen_freq) {
1995                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1996                 p2p->pending_listen_freq = 0;
1997         }
1998         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1999         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2000                         p2p->invite_dev_pw_id);
2001 }
2002
2003
2004 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2005                                        const u8 *ie, size_t ie_len)
2006 {
2007         struct p2p_message msg;
2008         struct p2p_device *dev;
2009
2010         os_memset(&msg, 0, sizeof(msg));
2011         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2012         {
2013                 p2p_parse_free(&msg);
2014                 return; /* not a P2P probe */
2015         }
2016
2017         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2018             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2019             != 0) {
2020                 /* The Probe Request is not part of P2P Device Discovery. It is
2021                  * not known whether the source address of the frame is the P2P
2022                  * Device Address or P2P Interface Address. Do not add a new
2023                  * peer entry based on this frames.
2024                  */
2025                 p2p_parse_free(&msg);
2026                 return;
2027         }
2028
2029         dev = p2p_get_device(p2p, addr);
2030         if (dev) {
2031                 if (dev->country[0] == 0 && msg.listen_channel)
2032                         os_memcpy(dev->country, msg.listen_channel, 3);
2033                 os_get_reltime(&dev->last_seen);
2034                 p2p_parse_free(&msg);
2035                 return; /* already known */
2036         }
2037
2038         dev = p2p_create_device(p2p, addr);
2039         if (dev == NULL) {
2040                 p2p_parse_free(&msg);
2041                 return;
2042         }
2043
2044         os_get_reltime(&dev->last_seen);
2045         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2046
2047         if (msg.listen_channel) {
2048                 os_memcpy(dev->country, msg.listen_channel, 3);
2049                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2050                                                        msg.listen_channel[4]);
2051         }
2052
2053         p2p_copy_wps_info(p2p, dev, 1, &msg);
2054
2055         if (msg.wfd_subelems) {
2056                 wpabuf_free(dev->info.wfd_subelems);
2057                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2058         }
2059
2060         p2p_parse_free(&msg);
2061
2062         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2063                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2064                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2065                 dev->info.group_capab, dev->info.device_name,
2066                 dev->listen_freq);
2067 }
2068
2069
2070 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2071                                                 const u8 *addr,
2072                                                 struct p2p_message *msg)
2073 {
2074         struct p2p_device *dev;
2075
2076         dev = p2p_get_device(p2p, addr);
2077         if (dev) {
2078                 os_get_reltime(&dev->last_seen);
2079                 return dev; /* already known */
2080         }
2081
2082         dev = p2p_create_device(p2p, addr);
2083         if (dev == NULL)
2084                 return NULL;
2085
2086         p2p_add_dev_info(p2p, addr, dev, msg);
2087
2088         return dev;
2089 }
2090
2091
2092 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2093 {
2094         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2095                 return 1;
2096         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2097             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2098             WPA_GET_BE16(&req_dev_type[6]) == 0)
2099                 return 1; /* Category match with wildcard OUI/sub-category */
2100         return 0;
2101 }
2102
2103
2104 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2105                         size_t num_req_dev_type)
2106 {
2107         size_t i;
2108         for (i = 0; i < num_req_dev_type; i++) {
2109                 if (dev_type_match(dev_type, req_dev_type[i]))
2110                         return 1;
2111         }
2112         return 0;
2113 }
2114
2115
2116 /**
2117  * p2p_match_dev_type - Match local device type with requested type
2118  * @p2p: P2P module context from p2p_init()
2119  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2120  * Returns: 1 on match, 0 on mismatch
2121  *
2122  * This function can be used to match the Requested Device Type attribute in
2123  * WPS IE with the local device types for deciding whether to reply to a Probe
2124  * Request frame.
2125  */
2126 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2127 {
2128         struct wps_parse_attr attr;
2129         size_t i;
2130
2131         if (wps_parse_msg(wps, &attr))
2132                 return 1; /* assume no Requested Device Type attributes */
2133
2134         if (attr.num_req_dev_type == 0)
2135                 return 1; /* no Requested Device Type attributes -> match */
2136
2137         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2138                                 attr.num_req_dev_type))
2139                 return 1; /* Own Primary Device Type matches */
2140
2141         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2142                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2143                                         attr.req_dev_type,
2144                                         attr.num_req_dev_type))
2145                         return 1; /* Own Secondary Device Type matches */
2146         }
2147
2148         /* No matching device type found */
2149         return 0;
2150 }
2151
2152
2153 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2154 {
2155         struct wpabuf *buf;
2156         u8 *len;
2157         int pw_id = -1;
2158         size_t extra = 0;
2159
2160 #ifdef CONFIG_WIFI_DISPLAY
2161         if (p2p->wfd_ie_probe_resp)
2162                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2163 #endif /* CONFIG_WIFI_DISPLAY */
2164
2165         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2166                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2167
2168         if (p2p->query_count)
2169                 extra += MAX_SVC_ADV_IE_LEN;
2170
2171         buf = wpabuf_alloc(1000 + extra);
2172         if (buf == NULL)
2173                 return NULL;
2174
2175         if (p2p->go_neg_peer) {
2176                 /* Advertise immediate availability of WPS credential */
2177                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2178         }
2179
2180         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2181                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2182                 wpabuf_free(buf);
2183                 return NULL;
2184         }
2185
2186 #ifdef CONFIG_WIFI_DISPLAY
2187         if (p2p->wfd_ie_probe_resp)
2188                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2189 #endif /* CONFIG_WIFI_DISPLAY */
2190
2191         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2192                 wpabuf_put_buf(buf,
2193                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2194
2195         /* P2P IE */
2196         len = p2p_buf_add_ie_hdr(buf);
2197         p2p_buf_add_capability(buf, p2p->dev_capab &
2198                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2199         if (p2p->ext_listen_interval)
2200                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2201                                               p2p->ext_listen_interval);
2202         p2p_buf_add_device_info(buf, p2p, NULL);
2203         p2p_buf_update_ie_hdr(buf, len);
2204
2205         if (p2p->query_count) {
2206                 p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2207                                              p2p->query_hash,
2208                                              p2p->p2ps_adv_list);
2209         }
2210
2211         return buf;
2212 }
2213
2214
2215 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2216 {
2217         struct p2ps_advertisement *adv_data;
2218
2219         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2220
2221         /* Wildcard always matches if we have actual services */
2222         if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2223                 return p2p->p2ps_adv_list != NULL;
2224
2225         adv_data = p2p->p2ps_adv_list;
2226         while (adv_data) {
2227                 p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2228                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2229                         return 1;
2230                 adv_data = adv_data->next;
2231         }
2232
2233         return 0;
2234 }
2235
2236
2237 static enum p2p_probe_req_status
2238 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2239                 const u8 *bssid, const u8 *ie, size_t ie_len,
2240                 unsigned int rx_freq)
2241 {
2242         struct ieee802_11_elems elems;
2243         struct wpabuf *buf;
2244         struct ieee80211_mgmt *resp;
2245         struct p2p_message msg;
2246         struct wpabuf *ies;
2247         u8 channel, op_class;
2248
2249         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2250             ParseFailed) {
2251                 /* Ignore invalid Probe Request frames */
2252                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2253                 return P2P_PREQ_MALFORMED;
2254         }
2255
2256         if (elems.p2p == NULL) {
2257                 /* not a P2P probe - ignore it */
2258                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2259                 return P2P_PREQ_NOT_P2P;
2260         }
2261
2262         if (dst && !is_broadcast_ether_addr(dst) &&
2263             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2264                 /* Not sent to the broadcast address or our P2P Device Address
2265                  */
2266                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2267                         MAC2STR(dst));
2268                 return P2P_PREQ_NOT_PROCESSED;
2269         }
2270
2271         if (bssid && !is_broadcast_ether_addr(bssid)) {
2272                 /* Not sent to the Wildcard BSSID */
2273                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2274                         MAC2STR(bssid));
2275                 return P2P_PREQ_NOT_PROCESSED;
2276         }
2277
2278         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2279             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2280             0) {
2281                 /* not using P2P Wildcard SSID - ignore */
2282                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2283                 return P2P_PREQ_NOT_PROCESSED;
2284         }
2285
2286         if (supp_rates_11b_only(&elems)) {
2287                 /* Indicates support for 11b rates only */
2288                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2289                 return P2P_PREQ_NOT_P2P;
2290         }
2291
2292         os_memset(&msg, 0, sizeof(msg));
2293         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2294                 /* Could not parse P2P attributes */
2295                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2296                 return P2P_PREQ_NOT_P2P;
2297         }
2298
2299         p2p->p2ps_svc_found = 0;
2300
2301         if (msg.service_hash && msg.service_hash_count) {
2302                 const u8 *hash = msg.service_hash;
2303                 u8 *dest = p2p->query_hash;
2304                 u8 i;
2305
2306                 p2p->query_count = 0;
2307                 for (i = 0; i < msg.service_hash_count; i++) {
2308                         if (p2p_service_find_asp(p2p, hash)) {
2309                                 p2p->p2ps_svc_found = 1;
2310
2311                                 if (!os_memcmp(hash, p2p->wild_card_hash,
2312                                                P2PS_HASH_LEN)) {
2313                                         /* We found match(es) but wildcard
2314                                          * will return all */
2315                                         p2p->query_count = 1;
2316                                         os_memcpy(p2p->query_hash, hash,
2317                                                   P2PS_HASH_LEN);
2318                                         break;
2319                                 }
2320
2321                                 /* Save each matching hash */
2322                                 if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2323                                         os_memcpy(dest, hash, P2PS_HASH_LEN);
2324                                         dest += P2PS_HASH_LEN;
2325                                         p2p->query_count++;
2326                                 } else {
2327                                         /* We found match(es) but too many to
2328                                          * return all */
2329                                         p2p->query_count = 0;
2330                                         break;
2331                                 }
2332                         }
2333                         hash += P2PS_HASH_LEN;
2334                 }
2335
2336                 p2p_dbg(p2p, "ASP adv found: %d", p2p->p2ps_svc_found);
2337
2338                 /* Probed hash unknown */
2339                 if (!p2p->p2ps_svc_found) {
2340                         p2p_parse_free(&msg);
2341                         return P2P_PREQ_NOT_PROCESSED;
2342                 }
2343         } else {
2344                 /* This is not a P2PS Probe Request */
2345                 p2p->query_count = 0;
2346                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2347
2348                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2349                         /* not in Listen state - ignore Probe Request */
2350                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2351                                 p2p->in_listen, p2p->drv_in_listen);
2352                         p2p_parse_free(&msg);
2353                         return P2P_PREQ_NOT_LISTEN;
2354                 }
2355         }
2356
2357         if (msg.device_id &&
2358             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2359                 /* Device ID did not match */
2360                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2361                         MAC2STR(msg.device_id));
2362                 p2p_parse_free(&msg);
2363                 return P2P_PREQ_NOT_PROCESSED;
2364         }
2365
2366         /* Check Requested Device Type match */
2367         if (msg.wps_attributes &&
2368             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2369                 /* No match with Requested Device Type */
2370                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2371                 p2p_parse_free(&msg);
2372                 return P2P_PREQ_NOT_PROCESSED;
2373         }
2374         p2p_parse_free(&msg);
2375
2376         if (!p2p->cfg->send_probe_resp) {
2377                 /* Response generated elsewhere */
2378                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2379                 return P2P_PREQ_NOT_PROCESSED;
2380         }
2381
2382         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2383
2384         /*
2385          * We do not really have a specific BSS that this frame is advertising,
2386          * so build a frame that has some information in valid format. This is
2387          * really only used for discovery purposes, not to learn exact BSS
2388          * parameters.
2389          */
2390         ies = p2p_build_probe_resp_ies(p2p);
2391         if (ies == NULL)
2392                 return P2P_PREQ_NOT_PROCESSED;
2393
2394         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2395         if (buf == NULL) {
2396                 wpabuf_free(ies);
2397                 return P2P_PREQ_NOT_PROCESSED;
2398         }
2399
2400         resp = NULL;
2401         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2402
2403         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2404                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2405         os_memcpy(resp->da, addr, ETH_ALEN);
2406         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2407         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2408         resp->u.probe_resp.beacon_int = host_to_le16(100);
2409         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2410         resp->u.probe_resp.capab_info =
2411                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2412                              WLAN_CAPABILITY_PRIVACY |
2413                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2414
2415         wpabuf_put_u8(buf, WLAN_EID_SSID);
2416         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2417         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2418
2419         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2420         wpabuf_put_u8(buf, 8);
2421         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2422         wpabuf_put_u8(buf, 90 / 5);
2423         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2424         wpabuf_put_u8(buf, 180 / 5);
2425         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2426         wpabuf_put_u8(buf, 360 / 5);
2427         wpabuf_put_u8(buf, 480 / 5);
2428         wpabuf_put_u8(buf, 540 / 5);
2429
2430         if (!rx_freq) {
2431                 channel = p2p->cfg->channel;
2432         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2433                 wpabuf_free(ies);
2434                 wpabuf_free(buf);
2435                 return P2P_PREQ_NOT_PROCESSED;
2436         }
2437
2438         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2439         wpabuf_put_u8(buf, 1);
2440         wpabuf_put_u8(buf, channel);
2441
2442         wpabuf_put_buf(buf, ies);
2443         wpabuf_free(ies);
2444
2445         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2446
2447         wpabuf_free(buf);
2448
2449         return P2P_PREQ_PROCESSED;
2450 }
2451
2452
2453 enum p2p_probe_req_status
2454 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2455                  const u8 *bssid, const u8 *ie, size_t ie_len,
2456                  unsigned int rx_freq)
2457 {
2458         enum p2p_probe_req_status res;
2459
2460         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2461
2462         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2463         p2p->query_count = 0;
2464
2465         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2466                 return res;
2467
2468         /*
2469          * Activate a pending GO Negotiation/Invite flow if a received Probe
2470          * Request frame is from an expected peer. Some devices may share the
2471          * same address for P2P and non-P2P STA running simultaneously. The
2472          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2473          * return values verified above ensure we are handling a Probe Request
2474          * frame from a P2P peer.
2475          */
2476         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2477             p2p->go_neg_peer &&
2478             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2479             == 0 &&
2480             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2481                 /* Received a Probe Request from GO Negotiation peer */
2482                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2483                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2484                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2485                 return res;
2486         }
2487
2488         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2489             p2p->invite_peer &&
2490             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2491             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2492             == 0) {
2493                 /* Received a Probe Request from Invite peer */
2494                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2495                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2496                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2497                 return res;
2498         }
2499
2500         return res;
2501 }
2502
2503
2504 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2505                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2506 {
2507         struct wpabuf *tmp;
2508         u8 *lpos;
2509         size_t tmplen;
2510         int res;
2511         u8 group_capab;
2512         struct p2p_message msg;
2513
2514         if (p2p_ie == NULL)
2515                 return 0; /* WLAN AP is not a P2P manager */
2516
2517         os_memset(&msg, 0, sizeof(msg));
2518         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2519                 return 0;
2520
2521         p2p_dbg(p2p, "BSS P2P manageability %s",
2522                 msg.manageability ? "enabled" : "disabled");
2523
2524         if (!msg.manageability)
2525                 return 0;
2526
2527         /*
2528          * (Re)Association Request - P2P IE
2529          * P2P Capability attribute (shall be present)
2530          * P2P Interface attribute (present if concurrent device and
2531          *      P2P Management is enabled)
2532          */
2533         tmp = wpabuf_alloc(200);
2534         if (tmp == NULL)
2535                 return -1;
2536
2537         lpos = p2p_buf_add_ie_hdr(tmp);
2538         group_capab = 0;
2539         if (p2p->num_groups > 0) {
2540                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2541                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2542                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2543                     p2p->cross_connect)
2544                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2545         }
2546         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2547         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2548             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2549                 p2p_buf_add_p2p_interface(tmp, p2p);
2550         p2p_buf_update_ie_hdr(tmp, lpos);
2551
2552         tmplen = wpabuf_len(tmp);
2553         if (tmplen > len)
2554                 res = -1;
2555         else {
2556                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2557                 res = tmplen;
2558         }
2559         wpabuf_free(tmp);
2560
2561         return res;
2562 }
2563
2564
2565 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2566                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2567 {
2568         struct wpabuf *tmp;
2569         u8 *lpos;
2570         struct p2p_device *peer;
2571         size_t tmplen;
2572         int res;
2573         size_t extra = 0;
2574
2575         if (!p2p_group)
2576                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2577
2578 #ifdef CONFIG_WIFI_DISPLAY
2579         if (p2p->wfd_ie_assoc_req)
2580                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2581 #endif /* CONFIG_WIFI_DISPLAY */
2582
2583         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2584                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2585
2586         /*
2587          * (Re)Association Request - P2P IE
2588          * P2P Capability attribute (shall be present)
2589          * Extended Listen Timing (may be present)
2590          * P2P Device Info attribute (shall be present)
2591          */
2592         tmp = wpabuf_alloc(200 + extra);
2593         if (tmp == NULL)
2594                 return -1;
2595
2596 #ifdef CONFIG_WIFI_DISPLAY
2597         if (p2p->wfd_ie_assoc_req)
2598                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2599 #endif /* CONFIG_WIFI_DISPLAY */
2600
2601         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2602                 wpabuf_put_buf(tmp,
2603                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2604
2605         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2606
2607         lpos = p2p_buf_add_ie_hdr(tmp);
2608         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2609         if (p2p->ext_listen_interval)
2610                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2611                                               p2p->ext_listen_interval);
2612         p2p_buf_add_device_info(tmp, p2p, peer);
2613         p2p_buf_update_ie_hdr(tmp, lpos);
2614
2615         tmplen = wpabuf_len(tmp);
2616         if (tmplen > len)
2617                 res = -1;
2618         else {
2619                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2620                 res = tmplen;
2621         }
2622         wpabuf_free(tmp);
2623
2624         return res;
2625 }
2626
2627
2628 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2629 {
2630         struct wpabuf *p2p_ie;
2631         int ret;
2632
2633         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2634         if (p2p_ie == NULL)
2635                 return 0;
2636
2637         ret = p2p_attr_text(p2p_ie, buf, end);
2638         wpabuf_free(p2p_ie);
2639         return ret;
2640 }
2641
2642
2643 struct p2ps_advertisement *
2644 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2645 {
2646         struct p2ps_advertisement *adv_data;
2647
2648         if (!p2p)
2649                 return NULL;
2650
2651         adv_data = p2p->p2ps_adv_list;
2652         while (adv_data) {
2653                 if (adv_data->id == adv_id)
2654                         return adv_data;
2655                 adv_data = adv_data->next;
2656         }
2657
2658         return NULL;
2659 }
2660
2661
2662 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2663 {
2664         struct p2ps_advertisement *adv_data;
2665         struct p2ps_advertisement **prior;
2666
2667         if (!p2p)
2668                 return -1;
2669
2670         adv_data = p2p->p2ps_adv_list;
2671         prior = &p2p->p2ps_adv_list;
2672         while (adv_data) {
2673                 if (adv_data->id == adv_id) {
2674                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2675                         *prior = adv_data->next;
2676                         os_free(adv_data);
2677                         return 0;
2678                 }
2679                 prior = &adv_data->next;
2680                 adv_data = adv_data->next;
2681         }
2682
2683         return -1;
2684 }
2685
2686
2687 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2688                         const char *adv_str, u8 svc_state, u16 config_methods,
2689                         const char *svc_info)
2690 {
2691         struct p2ps_advertisement *adv_data, *tmp, **prev;
2692         u8 buf[P2PS_HASH_LEN];
2693         size_t adv_data_len, adv_len, info_len = 0;
2694
2695         if (!p2p || !adv_str || !adv_str[0])
2696                 return -1;
2697
2698         if (!(config_methods & p2p->cfg->config_methods)) {
2699                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2700                         config_methods, p2p->cfg->config_methods);
2701                 return -1;
2702         }
2703
2704         if (!p2ps_gen_hash(p2p, adv_str, buf))
2705                 return -1;
2706
2707         if (svc_info)
2708                 info_len = os_strlen(svc_info);
2709         adv_len = os_strlen(adv_str);
2710         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2711                 info_len + 1;
2712
2713         adv_data = os_zalloc(adv_data_len);
2714         if (!adv_data)
2715                 return -1;
2716
2717         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2718         adv_data->id = adv_id;
2719         adv_data->state = svc_state;
2720         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2721         adv_data->auto_accept = (u8) auto_accept;
2722         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2723
2724         if (svc_info && info_len) {
2725                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2726                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2727         }
2728
2729         /*
2730          * Group Advertisements by service string. They do not need to be
2731          * sorted, but groups allow easier Probe Response instance grouping
2732          */
2733         tmp = p2p->p2ps_adv_list;
2734         prev = &p2p->p2ps_adv_list;
2735         while (tmp) {
2736                 if (tmp->id == adv_data->id) {
2737                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2738                                 os_free(adv_data);
2739                                 return -1;
2740                         }
2741                         adv_data->next = tmp->next;
2742                         *prev = adv_data;
2743                         os_free(tmp);
2744                         goto inserted;
2745                 } else {
2746                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2747                                 adv_data->next = tmp->next;
2748                                 tmp->next = adv_data;
2749                                 goto inserted;
2750                         }
2751                 }
2752                 prev = &tmp->next;
2753                 tmp = tmp->next;
2754         }
2755
2756         /* No svc_name match found */
2757         adv_data->next = p2p->p2ps_adv_list;
2758         p2p->p2ps_adv_list = adv_data;
2759
2760 inserted:
2761         p2p_dbg(p2p,
2762                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2763                 adv_id, adv_data->config_methods, svc_state, adv_str);
2764
2765         return 0;
2766 }
2767
2768
2769 void p2p_service_flush_asp(struct p2p_data *p2p)
2770 {
2771         struct p2ps_advertisement *adv, *prev;
2772
2773         if (!p2p)
2774                 return;
2775
2776         adv = p2p->p2ps_adv_list;
2777         while (adv) {
2778                 prev = adv;
2779                 adv = adv->next;
2780                 os_free(prev);
2781         }
2782
2783         p2p->p2ps_adv_list = NULL;
2784         p2p_dbg(p2p, "All ASP advertisements flushed");
2785 }
2786
2787
2788 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2789 {
2790         struct p2p_message msg;
2791
2792         os_memset(&msg, 0, sizeof(msg));
2793         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2794                 return -1;
2795
2796         if (msg.p2p_device_addr) {
2797                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2798                 return 0;
2799         } else if (msg.device_id) {
2800                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2801                 return 0;
2802         }
2803         return -1;
2804 }
2805
2806
2807 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2808 {
2809         struct wpabuf *p2p_ie;
2810         int ret;
2811
2812         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2813                                              P2P_IE_VENDOR_TYPE);
2814         if (p2p_ie == NULL)
2815                 return -1;
2816         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2817         wpabuf_free(p2p_ie);
2818         return ret;
2819 }
2820
2821
2822 static void p2p_clear_go_neg(struct p2p_data *p2p)
2823 {
2824         p2p->go_neg_peer = NULL;
2825         p2p_clear_timeout(p2p);
2826         p2p_set_state(p2p, P2P_IDLE);
2827 }
2828
2829
2830 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2831 {
2832         if (p2p->go_neg_peer == NULL) {
2833                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2834                 return; /* No pending Group Formation */
2835         }
2836
2837         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2838             0) {
2839                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2840                         MACSTR " (GO Negotiation peer " MACSTR ")",
2841                         MAC2STR(mac_addr),
2842                         MAC2STR(p2p->go_neg_peer->intended_addr));
2843                 return; /* Ignore unexpected peer address */
2844         }
2845
2846         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2847                 MAC2STR(mac_addr));
2848
2849         p2p_clear_go_neg(p2p);
2850 }
2851
2852
2853 void p2p_group_formation_failed(struct p2p_data *p2p)
2854 {
2855         if (p2p->go_neg_peer == NULL) {
2856                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2857                 return; /* No pending Group Formation */
2858         }
2859
2860         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2861                 MAC2STR(p2p->go_neg_peer->intended_addr));
2862
2863         p2p_clear_go_neg(p2p);
2864 }
2865
2866
2867 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2868 {
2869         struct p2p_data *p2p;
2870
2871         if (cfg->max_peers < 1 ||
2872             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2873                 return NULL;
2874
2875         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2876         if (p2p == NULL)
2877                 return NULL;
2878         p2p->cfg = (struct p2p_config *) (p2p + 1);
2879         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2880         if (cfg->dev_name)
2881                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2882         if (cfg->manufacturer)
2883                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2884         if (cfg->model_name)
2885                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2886         if (cfg->model_number)
2887                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2888         if (cfg->serial_number)
2889                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2890         if (cfg->pref_chan) {
2891                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2892                                                 sizeof(struct p2p_channel));
2893                 if (p2p->cfg->pref_chan) {
2894                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2895                                   cfg->num_pref_chan *
2896                                   sizeof(struct p2p_channel));
2897                 } else
2898                         p2p->cfg->num_pref_chan = 0;
2899         }
2900
2901         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2902
2903         p2p->min_disc_int = 1;
2904         p2p->max_disc_int = 3;
2905         p2p->max_disc_tu = -1;
2906
2907         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2908                 p2p->next_tie_breaker = 0;
2909         p2p->next_tie_breaker &= 0x01;
2910         if (cfg->sd_request)
2911                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2912         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2913         if (cfg->concurrent_operations)
2914                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2915         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2916
2917         dl_list_init(&p2p->devices);
2918
2919         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2920                                p2p_expiration_timeout, p2p, NULL);
2921
2922         p2p->go_timeout = 100;
2923         p2p->client_timeout = 20;
2924         p2p->num_p2p_sd_queries = 0;
2925
2926         p2p_dbg(p2p, "initialized");
2927         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2928         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2929
2930         return p2p;
2931 }
2932
2933
2934 void p2p_deinit(struct p2p_data *p2p)
2935 {
2936 #ifdef CONFIG_WIFI_DISPLAY
2937         wpabuf_free(p2p->wfd_ie_beacon);
2938         wpabuf_free(p2p->wfd_ie_probe_req);
2939         wpabuf_free(p2p->wfd_ie_probe_resp);
2940         wpabuf_free(p2p->wfd_ie_assoc_req);
2941         wpabuf_free(p2p->wfd_ie_invitation);
2942         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2943         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2944         wpabuf_free(p2p->wfd_ie_go_neg);
2945         wpabuf_free(p2p->wfd_dev_info);
2946         wpabuf_free(p2p->wfd_assoc_bssid);
2947         wpabuf_free(p2p->wfd_coupled_sink_info);
2948 #endif /* CONFIG_WIFI_DISPLAY */
2949
2950         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2951         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2952         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2953         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2954         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2955         p2p_flush(p2p);
2956         p2p_free_req_dev_types(p2p);
2957         os_free(p2p->cfg->dev_name);
2958         os_free(p2p->cfg->manufacturer);
2959         os_free(p2p->cfg->model_name);
2960         os_free(p2p->cfg->model_number);
2961         os_free(p2p->cfg->serial_number);
2962         os_free(p2p->cfg->pref_chan);
2963         os_free(p2p->groups);
2964         os_free(p2p->p2ps_prov);
2965         wpabuf_free(p2p->sd_resp);
2966         os_free(p2p->after_scan_tx);
2967         p2p_remove_wps_vendor_extensions(p2p);
2968         os_free(p2p->no_go_freq.range);
2969         p2p_service_flush_asp(p2p);
2970
2971         os_free(p2p);
2972 }
2973
2974
2975 void p2p_flush(struct p2p_data *p2p)
2976 {
2977         struct p2p_device *dev, *prev;
2978         p2p_stop_find(p2p);
2979         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2980                               list) {
2981                 dl_list_del(&dev->list);
2982                 p2p_device_free(p2p, dev);
2983         }
2984         p2p_free_sd_queries(p2p);
2985         os_free(p2p->after_scan_tx);
2986         p2p->after_scan_tx = NULL;
2987 }
2988
2989
2990 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2991 {
2992         struct p2p_device *dev;
2993
2994         dev = p2p_get_device(p2p, addr);
2995         if (dev == NULL)
2996                 return -1;
2997
2998         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2999
3000         if (p2p->go_neg_peer == dev) {
3001                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3002                 p2p->go_neg_peer = NULL;
3003         }
3004
3005         dev->wps_method = WPS_NOT_READY;
3006         dev->oob_pw_id = 0;
3007         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3008         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3009
3010         /* Check if after_scan_tx is for this peer. If so free it */
3011         if (p2p->after_scan_tx &&
3012             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3013                 os_free(p2p->after_scan_tx);
3014                 p2p->after_scan_tx = NULL;
3015         }
3016
3017         return 0;
3018 }
3019
3020
3021 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3022 {
3023         os_free(p2p->cfg->dev_name);
3024         if (dev_name) {
3025                 p2p->cfg->dev_name = os_strdup(dev_name);
3026                 if (p2p->cfg->dev_name == NULL)
3027                         return -1;
3028         } else
3029                 p2p->cfg->dev_name = NULL;
3030         return 0;
3031 }
3032
3033
3034 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3035 {
3036         os_free(p2p->cfg->manufacturer);
3037         p2p->cfg->manufacturer = NULL;
3038         if (manufacturer) {
3039                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3040                 if (p2p->cfg->manufacturer == NULL)
3041                         return -1;
3042         }
3043
3044         return 0;
3045 }
3046
3047
3048 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3049 {
3050         os_free(p2p->cfg->model_name);
3051         p2p->cfg->model_name = NULL;
3052         if (model_name) {
3053                 p2p->cfg->model_name = os_strdup(model_name);
3054                 if (p2p->cfg->model_name == NULL)
3055                         return -1;
3056         }
3057
3058         return 0;
3059 }
3060
3061
3062 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3063 {
3064         os_free(p2p->cfg->model_number);
3065         p2p->cfg->model_number = NULL;
3066         if (model_number) {
3067                 p2p->cfg->model_number = os_strdup(model_number);
3068                 if (p2p->cfg->model_number == NULL)
3069                         return -1;
3070         }
3071
3072         return 0;
3073 }
3074
3075
3076 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3077 {
3078         os_free(p2p->cfg->serial_number);
3079         p2p->cfg->serial_number = NULL;
3080         if (serial_number) {
3081                 p2p->cfg->serial_number = os_strdup(serial_number);
3082                 if (p2p->cfg->serial_number == NULL)
3083                         return -1;
3084         }
3085
3086         return 0;
3087 }
3088
3089
3090 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3091 {
3092         p2p->cfg->config_methods = config_methods;
3093 }
3094
3095
3096 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3097 {
3098         os_memcpy(p2p->cfg->uuid, uuid, 16);
3099 }
3100
3101
3102 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3103 {
3104         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3105         return 0;
3106 }
3107
3108
3109 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3110                           size_t num_dev_types)
3111 {
3112         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3113                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3114         p2p->cfg->num_sec_dev_types = num_dev_types;
3115         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3116         return 0;
3117 }
3118
3119
3120 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3121 {
3122         int i;
3123
3124         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3125                 wpabuf_free(p2p->wps_vendor_ext[i]);
3126                 p2p->wps_vendor_ext[i] = NULL;
3127         }
3128 }
3129
3130
3131 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3132                                  const struct wpabuf *vendor_ext)
3133 {
3134         int i;
3135
3136         if (vendor_ext == NULL)
3137                 return -1;
3138
3139         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3140                 if (p2p->wps_vendor_ext[i] == NULL)
3141                         break;
3142         }
3143         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3144                 return -1;
3145
3146         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3147         if (p2p->wps_vendor_ext[i] == NULL)
3148                 return -1;
3149
3150         return 0;
3151 }
3152
3153
3154 int p2p_set_country(struct p2p_data *p2p, const char *country)
3155 {
3156         os_memcpy(p2p->cfg->country, country, 3);
3157         return 0;
3158 }
3159
3160
3161 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3162 {
3163         if (dev->sd_pending_bcast_queries == 0) {
3164                 /* Initialize with total number of registered broadcast
3165                  * SD queries. */
3166                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3167         }
3168
3169         if (p2p_start_sd(p2p, dev) == 0)
3170                 return 1;
3171
3172         if (dev->req_config_methods &&
3173             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3174                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3175                         MACSTR " (config methods 0x%x)",
3176                         MAC2STR(dev->info.p2p_device_addr),
3177                         dev->req_config_methods);
3178                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3179                         return 1;
3180         }
3181
3182         return 0;
3183 }
3184
3185
3186 void p2p_continue_find(struct p2p_data *p2p)
3187 {
3188         struct p2p_device *dev;
3189         int found;
3190
3191         p2p_set_state(p2p, P2P_SEARCH);
3192
3193         /* Continue from the device following the last iteration */
3194         found = 0;
3195         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3196                 if (dev == p2p->last_p2p_find_oper) {
3197                         found = 1;
3198                         continue;
3199                 }
3200                 if (!found)
3201                         continue;
3202                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3203                         p2p->last_p2p_find_oper = dev;
3204                         return;
3205                 }
3206         }
3207
3208         /*
3209          * Wrap around to the beginning of the list and continue until the last
3210          * iteration device.
3211          */
3212         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3213                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3214                         p2p->last_p2p_find_oper = dev;
3215                         return;
3216                 }
3217                 if (dev == p2p->last_p2p_find_oper)
3218                         break;
3219         }
3220
3221         p2p_listen_in_find(p2p, 1);
3222 }
3223
3224
3225 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3226 {
3227         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3228                 success);
3229         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3230
3231         if (!success) {
3232                 if (p2p->sd_peer)
3233                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3234                 p2p->sd_peer = NULL;
3235                 if (p2p->state != P2P_IDLE)
3236                         p2p_continue_find(p2p);
3237                 return;
3238         }
3239
3240         if (p2p->sd_peer == NULL) {
3241                 p2p_dbg(p2p, "No SD peer entry known");
3242                 if (p2p->state != P2P_IDLE)
3243                         p2p_continue_find(p2p);
3244                 return;
3245         }
3246
3247         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3248                 /* Update the pending broadcast SD query count for this device
3249                  */
3250                 p2p->sd_peer->sd_pending_bcast_queries--;
3251
3252                 /*
3253                  * If there are no pending broadcast queries for this device,
3254                  * mark it as done (-1).
3255                  */
3256                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3257                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3258         }
3259
3260         /* Wait for response from the peer */
3261         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3262         p2p_set_timeout(p2p, 0, 200000);
3263 }
3264
3265
3266 /**
3267  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3268  * @p2p: P2P module context from p2p_init()
3269  */
3270 static void p2p_retry_pd(struct p2p_data *p2p)
3271 {
3272         struct p2p_device *dev;
3273
3274         /*
3275          * Retry the prov disc req attempt only for the peer that the user had
3276          * requested.
3277          */
3278
3279         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3280                 if (os_memcmp(p2p->pending_pd_devaddr,
3281                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3282                         continue;
3283                 if (!dev->req_config_methods)
3284                         continue;
3285
3286                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3287                         MACSTR " (config methods 0x%x)",
3288                         MAC2STR(dev->info.p2p_device_addr),
3289                         dev->req_config_methods);
3290                 p2p_send_prov_disc_req(p2p, dev,
3291                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3292                                        p2p->pd_force_freq);
3293                 return;
3294         }
3295 }
3296
3297
3298 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3299 {
3300         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3301                 success);
3302
3303         /*
3304          * Postpone resetting the pending action state till after we actually
3305          * time out. This allows us to take some action like notifying any
3306          * interested parties about no response to the request.
3307          *
3308          * When the timer (below) goes off we check in IDLE, SEARCH, or
3309          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3310          * requests in, if this was still pending and then raise notification.
3311          */
3312
3313         if (!success) {
3314                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3315
3316                 if (p2p->user_initiated_pd &&
3317                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3318                 {
3319                         /* Retry request from timeout to avoid busy loops */
3320                         p2p->pending_action_state = P2P_PENDING_PD;
3321                         p2p_set_timeout(p2p, 0, 50000);
3322                 } else if (p2p->state != P2P_IDLE)
3323                         p2p_continue_find(p2p);
3324                 else if (p2p->user_initiated_pd) {
3325                         p2p->pending_action_state = P2P_PENDING_PD;
3326                         p2p_set_timeout(p2p, 0, 300000);
3327                 }
3328                 return;
3329         }
3330
3331         /*
3332          * This postponing, of resetting pending_action_state, needs to be
3333          * done only for user initiated PD requests and not internal ones.
3334          */
3335         if (p2p->user_initiated_pd)
3336                 p2p->pending_action_state = P2P_PENDING_PD;
3337         else
3338                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3339
3340         /* Wait for response from the peer */
3341         if (p2p->state == P2P_SEARCH)
3342                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3343         p2p_set_timeout(p2p, 0, 200000);
3344 }
3345
3346
3347 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3348 {
3349         if (p2p->after_scan_tx_in_progress) {
3350                 p2p->after_scan_tx_in_progress = 0;
3351                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3352                     p2p_run_after_scan(p2p))
3353                         return 1;
3354                 if (p2p->state == P2P_SEARCH) {
3355                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3356                         p2p_continue_find(p2p);
3357                 }
3358         }
3359
3360         return 0;
3361 }
3362
3363
3364 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3365 {
3366         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3367                 success);
3368
3369         if (p2p->send_action_in_progress) {
3370                 p2p->send_action_in_progress = 0;
3371                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3372         }
3373
3374         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3375
3376         if (!success)
3377                 goto continue_search;
3378
3379         if (!p2p->cfg->prov_disc_resp_cb ||
3380             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3381                 goto continue_search;
3382
3383         p2p_dbg(p2p,
3384                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3385         return;
3386
3387 continue_search:
3388         p2p_check_after_scan_tx_continuation(p2p);
3389 }
3390
3391
3392 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3393                          struct os_reltime *rx_time, int level, const u8 *ies,
3394                          size_t ies_len)
3395 {
3396         if (os_reltime_before(rx_time, &p2p->find_start)) {
3397                 /*
3398                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3399                  * scan results for relatively long time. To avoid reporting
3400                  * stale information, update P2P peers only based on results
3401                  * that have based on frames received after the last p2p_find
3402                  * operation was started.
3403                  */
3404                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3405                         " (rx_time=%u.%06u)",
3406                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3407                         (unsigned int) rx_time->usec);
3408                 return 0;
3409         }
3410
3411         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3412
3413         return 0;
3414 }
3415
3416
3417 void p2p_scan_res_handled(struct p2p_data *p2p)
3418 {
3419         if (!p2p->p2p_scan_running) {
3420                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3421         }
3422         p2p->p2p_scan_running = 0;
3423         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3424
3425         if (p2p_run_after_scan(p2p))
3426                 return;
3427         if (p2p->state == P2P_SEARCH)
3428                 p2p_continue_find(p2p);
3429 }
3430
3431
3432 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3433 {
3434         u8 dev_capab;
3435         u8 *len;
3436
3437 #ifdef CONFIG_WIFI_DISPLAY
3438         if (p2p->wfd_ie_probe_req)
3439                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3440 #endif /* CONFIG_WIFI_DISPLAY */
3441
3442         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3443                 wpabuf_put_buf(ies,
3444                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3445
3446         len = p2p_buf_add_ie_hdr(ies);
3447
3448         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3449
3450         /* P2PS requires Probe Request frames to include SD bit */
3451         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3452                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3453
3454         p2p_buf_add_capability(ies, dev_capab, 0);
3455
3456         if (dev_id)
3457                 p2p_buf_add_device_id(ies, dev_id);
3458         if (p2p->cfg->reg_class && p2p->cfg->channel)
3459                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3460                                            p2p->cfg->reg_class,
3461                                            p2p->cfg->channel);
3462         if (p2p->ext_listen_interval)
3463                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3464                                               p2p->ext_listen_interval);
3465
3466         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3467                 p2p_buf_add_service_hash(ies, p2p);
3468
3469         /* TODO: p2p_buf_add_operating_channel() if GO */
3470         p2p_buf_update_ie_hdr(ies, len);
3471 }
3472
3473
3474 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3475 {
3476         size_t len = 100;
3477
3478 #ifdef CONFIG_WIFI_DISPLAY
3479         if (p2p && p2p->wfd_ie_probe_req)
3480                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3481 #endif /* CONFIG_WIFI_DISPLAY */
3482
3483         if (p2p && p2p->vendor_elem &&
3484             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3485                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3486
3487         return len;
3488 }
3489
3490
3491 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3492 {
3493         return p2p_attr_text(p2p_ie, buf, end);
3494 }
3495
3496
3497 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3498 {
3499         struct p2p_device *dev = p2p->go_neg_peer;
3500         int timeout;
3501
3502         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3503
3504         if (dev == NULL) {
3505                 p2p_dbg(p2p, "No pending GO Negotiation");
3506                 return;
3507         }
3508
3509         if (success) {
3510                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3511                         p2p_set_state(p2p, P2P_IDLE);
3512                         return;
3513                 }
3514         } else if (dev->go_neg_req_sent) {
3515                 /* Cancel the increment from p2p_connect_send() on failure */
3516                 dev->go_neg_req_sent--;
3517         }
3518
3519         if (!success &&
3520             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3521             !is_zero_ether_addr(dev->member_in_go_dev)) {
3522                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3523                         MAC2STR(dev->info.p2p_device_addr));
3524                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3525                 p2p_send_dev_disc_req(p2p, dev);
3526                 return;
3527         }
3528
3529         /*
3530          * Use P2P find, if needed, to find the other device from its listen
3531          * channel.
3532          */
3533         p2p_set_state(p2p, P2P_CONNECT);
3534         timeout = success ? 500000 : 100000;
3535         if (!success && p2p->go_neg_peer &&
3536             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3537                 unsigned int r;
3538                 /*
3539                  * Peer is expected to wait our response and we will skip the
3540                  * listen phase. Add some randomness to the wait time here to
3541                  * make it less likely to hit cases where we could end up in
3542                  * sync with peer not listening.
3543                  */
3544                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3545                         r = 0;
3546                 timeout += r % 100000;
3547         }
3548         p2p_set_timeout(p2p, 0, timeout);
3549 }
3550
3551
3552 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3553 {
3554         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3555                 success);
3556         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3557                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3558                 return;
3559         }
3560         p2p_set_state(p2p, P2P_CONNECT);
3561         p2p_set_timeout(p2p, 0, 500000);
3562 }
3563
3564
3565 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3566                                        const u8 *addr)
3567 {
3568         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3569         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3570                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3571                 return;
3572         }
3573
3574         if (success) {
3575                 struct p2p_device *dev;
3576                 dev = p2p_get_device(p2p, addr);
3577                 if (dev &&
3578                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3579                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3580         }
3581
3582         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3583                 p2p_continue_find(p2p);
3584 }
3585
3586
3587 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3588                                enum p2p_send_action_result result)
3589 {
3590         struct p2p_device *dev;
3591
3592         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3593         if (result == P2P_SEND_ACTION_FAILED) {
3594                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3595                 p2p_go_neg_failed(p2p, -1);
3596                 return;
3597         }
3598
3599         dev = p2p->go_neg_peer;
3600
3601         if (result == P2P_SEND_ACTION_NO_ACK) {
3602                 /*
3603                  * Retry GO Negotiation Confirmation
3604                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3605                  * ACK for confirmation.
3606                  */
3607                 if (dev && dev->go_neg_conf &&
3608                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3609                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3610                                 dev->go_neg_conf_sent);
3611                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3612                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3613                                             dev->info.p2p_device_addr,
3614                                             p2p->cfg->dev_addr,
3615                                             dev->info.p2p_device_addr,
3616                                             wpabuf_head(dev->go_neg_conf),
3617                                             wpabuf_len(dev->go_neg_conf), 0) >=
3618                             0) {
3619                                 dev->go_neg_conf_sent++;
3620                                 return;
3621                         }
3622                         p2p_dbg(p2p, "Failed to re-send Action frame");
3623
3624                         /*
3625                          * Continue with the assumption that the first attempt
3626                          * went through and just the ACK frame was lost.
3627                          */
3628                 }
3629
3630                 /*
3631                  * It looks like the TX status for GO Negotiation Confirm is
3632                  * often showing failure even when the peer has actually
3633                  * received the frame. Since the peer may change channels
3634                  * immediately after having received the frame, we may not see
3635                  * an Ack for retries, so just dropping a single frame may
3636                  * trigger this. To allow the group formation to succeed if the
3637                  * peer did indeed receive the frame, continue regardless of
3638                  * the TX status.
3639                  */
3640                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3641         }
3642
3643         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3644
3645         if (dev == NULL)
3646                 return;
3647
3648         p2p_go_complete(p2p, dev);
3649 }
3650
3651
3652 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3653                         const u8 *src, const u8 *bssid,
3654                         enum p2p_send_action_result result)
3655 {
3656         enum p2p_pending_action_state state;
3657         int success;
3658
3659         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3660                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3661                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3662                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3663         success = result == P2P_SEND_ACTION_SUCCESS;
3664         state = p2p->pending_action_state;
3665         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3666         switch (state) {
3667         case P2P_NO_PENDING_ACTION:
3668                 if (p2p->send_action_in_progress) {
3669                         p2p->send_action_in_progress = 0;
3670                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3671                 }
3672                 p2p_check_after_scan_tx_continuation(p2p);
3673                 break;
3674         case P2P_PENDING_GO_NEG_REQUEST:
3675                 p2p_go_neg_req_cb(p2p, success);
3676                 break;
3677         case P2P_PENDING_GO_NEG_RESPONSE:
3678                 p2p_go_neg_resp_cb(p2p, success);
3679                 break;
3680         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3681                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3682                 break;
3683         case P2P_PENDING_GO_NEG_CONFIRM:
3684                 p2p_go_neg_conf_cb(p2p, result);
3685                 break;
3686         case P2P_PENDING_SD:
3687                 p2p_sd_cb(p2p, success);
3688                 break;
3689         case P2P_PENDING_PD:
3690                 p2p_prov_disc_cb(p2p, success);
3691                 break;
3692         case P2P_PENDING_PD_RESPONSE:
3693                 p2p_prov_disc_resp_cb(p2p, success);
3694                 break;
3695         case P2P_PENDING_INVITATION_REQUEST:
3696                 p2p_invitation_req_cb(p2p, success);
3697                 break;
3698         case P2P_PENDING_INVITATION_RESPONSE:
3699                 p2p_invitation_resp_cb(p2p, success);
3700                 break;
3701         case P2P_PENDING_DEV_DISC_REQUEST:
3702                 p2p_dev_disc_req_cb(p2p, success);
3703                 break;
3704         case P2P_PENDING_DEV_DISC_RESPONSE:
3705                 p2p_dev_disc_resp_cb(p2p, success);
3706                 break;
3707         case P2P_PENDING_GO_DISC_REQ:
3708                 p2p_go_disc_req_cb(p2p, success);
3709                 break;
3710         }
3711
3712         p2p->after_scan_tx_in_progress = 0;
3713 }
3714
3715
3716 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3717                    unsigned int duration)
3718 {
3719         if (freq == p2p->pending_client_disc_freq) {
3720                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3721                 p2p->pending_client_disc_freq = 0;
3722                 return;
3723         }
3724
3725         if (freq != p2p->pending_listen_freq) {
3726                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3727                         freq, duration, p2p->pending_listen_freq);
3728                 return;
3729         }
3730
3731         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3732                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3733                 p2p->pending_listen_freq);
3734         p2p->in_listen = 1;
3735         p2p->drv_in_listen = freq;
3736         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3737                 /*
3738                  * Add 20 msec extra wait to avoid race condition with driver
3739                  * remain-on-channel end event, i.e., give driver more time to
3740                  * complete the operation before our timeout expires.
3741                  */
3742                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3743                                 p2p->pending_listen_usec + 20000);
3744         }
3745
3746         p2p->pending_listen_freq = 0;
3747 }
3748
3749
3750 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3751 {
3752         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3753         p2p->drv_in_listen = 0;
3754         if (p2p->in_listen)
3755                 return 0; /* Internal timeout will trigger the next step */
3756
3757         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3758                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3759                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3760                         p2p_go_neg_failed(p2p, -1);
3761                         return 0;
3762                 }
3763
3764                 p2p_set_state(p2p, P2P_CONNECT);
3765                 p2p_connect_send(p2p, p2p->go_neg_peer);
3766                 return 1;
3767         } else if (p2p->state == P2P_SEARCH) {
3768                 if (p2p->p2p_scan_running) {
3769                          /*
3770                           * Search is already in progress. This can happen if
3771                           * an Action frame RX is reported immediately after
3772                           * the end of a remain-on-channel operation and the
3773                           * response frame to that is sent using an offchannel
3774                           * operation while in p2p_find. Avoid an attempt to
3775                           * restart a scan here.
3776                           */
3777                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3778                         return 1;
3779                 }
3780                 if (p2p->pending_listen_freq) {
3781                         /*
3782                          * Better wait a bit if the driver is unable to start
3783                          * offchannel operation for some reason. p2p_search()
3784                          * will be started from internal timeout.
3785                          */
3786                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3787                         p2p_set_timeout(p2p, 0, 100000);
3788                         return 1;
3789                 }
3790                 if (p2p->search_delay) {
3791                         p2p_dbg(p2p, "Delay search operation by %u ms",
3792                                 p2p->search_delay);
3793                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3794                                         (p2p->search_delay % 1000) * 1000);
3795                         return 1;
3796                 }
3797                 p2p_search(p2p);
3798                 return 1;
3799         }
3800
3801         return 0;
3802 }
3803
3804
3805 static void p2p_timeout_connect(struct p2p_data *p2p)
3806 {
3807         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3808         if (p2p->go_neg_peer &&
3809             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3810                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3811                 p2p_go_neg_failed(p2p, -1);
3812                 return;
3813         }
3814         if (p2p->go_neg_peer &&
3815             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3816             p2p->go_neg_peer->connect_reqs < 120) {
3817                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3818                 p2p_connect_send(p2p, p2p->go_neg_peer);
3819                 return;
3820         }
3821         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3822                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3823                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3824                 p2p_set_timeout(p2p, 0, 30000);
3825                 return;
3826         }
3827         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3828         p2p_listen_in_find(p2p, 0);
3829 }
3830
3831
3832 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3833 {
3834         if (p2p->go_neg_peer) {
3835                 if (p2p->drv_in_listen) {
3836                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3837                         return;
3838                 }
3839
3840                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3841                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3842                         p2p_go_neg_failed(p2p, -1);
3843                         return;
3844                 }
3845
3846                 p2p_set_state(p2p, P2P_CONNECT);
3847                 p2p_connect_send(p2p, p2p->go_neg_peer);
3848         } else
3849                 p2p_set_state(p2p, P2P_IDLE);
3850 }
3851
3852
3853 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3854 {
3855         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3856
3857         if (p2p->cfg->is_concurrent_session_active &&
3858             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3859                 p2p_set_timeout(p2p, 0, 500000);
3860         else
3861                 p2p_set_timeout(p2p, 0, 200000);
3862 }
3863
3864
3865 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3866 {
3867         struct p2p_device *dev = p2p->go_neg_peer;
3868
3869         if (dev == NULL) {
3870                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3871                 return;
3872         }
3873
3874         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3875         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3876         p2p_listen_in_find(p2p, 0);
3877 }
3878
3879
3880 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3881 {
3882         p2p_dbg(p2p, "Service Discovery Query timeout");
3883         if (p2p->sd_peer) {
3884                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3885                 p2p->sd_peer = NULL;
3886         }
3887         p2p_continue_find(p2p);
3888 }
3889
3890
3891 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3892 {
3893         p2p_dbg(p2p, "Provision Discovery Request timeout");
3894         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3895         p2p_continue_find(p2p);
3896 }
3897
3898
3899 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3900 {
3901         u32 adv_id = 0;
3902         u8 *adv_mac = NULL;
3903
3904         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3905
3906         /*
3907          * For user initiated PD requests that we have not gotten any responses
3908          * for while in IDLE state, we retry them a couple of times before
3909          * giving up.
3910          */
3911         if (!p2p->user_initiated_pd)
3912                 return;
3913
3914         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3915
3916         if (p2p->pd_retries) {
3917                 p2p->pd_retries--;
3918                 p2p_retry_pd(p2p);
3919         } else {
3920                 struct p2p_device *dev;
3921                 int for_join = 0;
3922
3923                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3924                         if (os_memcmp(p2p->pending_pd_devaddr,
3925                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3926                                 continue;
3927                         if (dev->req_config_methods &&
3928                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3929                                 for_join = 1;
3930                 }
3931
3932                 if (p2p->p2ps_prov) {
3933                         adv_id = p2p->p2ps_prov->adv_id;
3934                         adv_mac = p2p->p2ps_prov->adv_mac;
3935                 }
3936
3937                 if (p2p->cfg->prov_disc_fail)
3938                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3939                                                  p2p->pending_pd_devaddr,
3940                                                  for_join ?
3941                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3942                                                  P2P_PROV_DISC_TIMEOUT,
3943                                                  adv_id, adv_mac, NULL);
3944                 p2p_reset_pending_pd(p2p);
3945         }
3946 }
3947
3948
3949 static void p2p_timeout_invite(struct p2p_data *p2p)
3950 {
3951         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3952         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3953         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3954                 /*
3955                  * Better remain on operating channel instead of listen channel
3956                  * when running a group.
3957                  */
3958                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3959                 p2p_set_timeout(p2p, 0, 100000);
3960                 return;
3961         }
3962         p2p_listen_in_find(p2p, 0);
3963 }
3964
3965
3966 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3967 {
3968         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3969                 p2p_set_state(p2p, P2P_INVITE);
3970                 p2p_invite_send(p2p, p2p->invite_peer,
3971                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3972         } else {
3973                 if (p2p->invite_peer) {
3974                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3975                         if (p2p->cfg->invitation_result)
3976                                 p2p->cfg->invitation_result(
3977                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3978                                         p2p->invite_peer->info.p2p_device_addr,
3979                                         0, 0);
3980                 }
3981                 p2p_set_state(p2p, P2P_IDLE);
3982         }
3983 }
3984
3985
3986 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3987 {
3988         struct p2p_data *p2p = eloop_ctx;
3989
3990         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3991
3992         p2p->in_listen = 0;
3993         if (p2p->drv_in_listen) {
3994                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3995                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3996         }
3997
3998         switch (p2p->state) {
3999         case P2P_IDLE:
4000                 /* Check if we timed out waiting for PD req */
4001                 if (p2p->pending_action_state == P2P_PENDING_PD)
4002                         p2p_timeout_prov_disc_req(p2p);
4003                 break;
4004         case P2P_SEARCH:
4005                 /* Check if we timed out waiting for PD req */
4006                 if (p2p->pending_action_state == P2P_PENDING_PD)
4007                         p2p_timeout_prov_disc_req(p2p);
4008                 if (p2p->search_delay && !p2p->in_search_delay) {
4009                         p2p_dbg(p2p, "Delay search operation by %u ms",
4010                                 p2p->search_delay);
4011                         p2p->in_search_delay = 1;
4012                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4013                                         (p2p->search_delay % 1000) * 1000);
4014                         break;
4015                 }
4016                 p2p->in_search_delay = 0;
4017                 p2p_search(p2p);
4018                 break;
4019         case P2P_CONNECT:
4020                 p2p_timeout_connect(p2p);
4021                 break;
4022         case P2P_CONNECT_LISTEN:
4023                 p2p_timeout_connect_listen(p2p);
4024                 break;
4025         case P2P_GO_NEG:
4026                 break;
4027         case P2P_LISTEN_ONLY:
4028                 /* Check if we timed out waiting for PD req */
4029                 if (p2p->pending_action_state == P2P_PENDING_PD)
4030                         p2p_timeout_prov_disc_req(p2p);
4031
4032                 if (p2p->ext_listen_only) {
4033                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4034                         p2p->ext_listen_only = 0;
4035                         p2p_set_state(p2p, P2P_IDLE);
4036                 }
4037                 break;
4038         case P2P_WAIT_PEER_CONNECT:
4039                 p2p_timeout_wait_peer_connect(p2p);
4040                 break;
4041         case P2P_WAIT_PEER_IDLE:
4042                 p2p_timeout_wait_peer_idle(p2p);
4043                 break;
4044         case P2P_SD_DURING_FIND:
4045                 p2p_timeout_sd_during_find(p2p);
4046                 break;
4047         case P2P_PROVISIONING:
4048                 break;
4049         case P2P_PD_DURING_FIND:
4050                 p2p_timeout_prov_disc_during_find(p2p);
4051                 break;
4052         case P2P_INVITE:
4053                 p2p_timeout_invite(p2p);
4054                 break;
4055         case P2P_INVITE_LISTEN:
4056                 p2p_timeout_invite_listen(p2p);
4057                 break;
4058         }
4059 }
4060
4061
4062 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4063 {
4064         struct p2p_device *dev;
4065
4066         dev = p2p_get_device(p2p, peer_addr);
4067         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4068                 MACSTR, MAC2STR(peer_addr));
4069         if (dev == NULL) {
4070                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4071                 return -1;
4072         }
4073         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4074         dev->flags |= P2P_DEV_USER_REJECTED;
4075         return 0;
4076 }
4077
4078
4079 const char * p2p_wps_method_text(enum p2p_wps_method method)
4080 {
4081         switch (method) {
4082         case WPS_NOT_READY:
4083                 return "not-ready";
4084         case WPS_PIN_DISPLAY:
4085                 return "Display";
4086         case WPS_PIN_KEYPAD:
4087                 return "Keypad";
4088         case WPS_PBC:
4089                 return "PBC";
4090         case WPS_NFC:
4091                 return "NFC";
4092         case WPS_P2PS:
4093                 return "P2PS";
4094         }
4095
4096         return "??";
4097 }
4098
4099
4100 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4101 {
4102         switch (go_state) {
4103         case UNKNOWN_GO:
4104                 return "unknown";
4105         case LOCAL_GO:
4106                 return "local";
4107         case  REMOTE_GO:
4108                 return "remote";
4109         }
4110
4111         return "??";
4112 }
4113
4114
4115 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4116                                                const u8 *addr, int next)
4117 {
4118         struct p2p_device *dev;
4119
4120         if (addr)
4121                 dev = p2p_get_device(p2p, addr);
4122         else
4123                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4124
4125         if (dev && next) {
4126                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4127                 if (&dev->list == &p2p->devices)
4128                         dev = NULL;
4129         }
4130
4131         if (dev == NULL)
4132                 return NULL;
4133
4134         return &dev->info;
4135 }
4136
4137
4138 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4139                           char *buf, size_t buflen)
4140 {
4141         struct p2p_device *dev;
4142         int res;
4143         char *pos, *end;
4144         struct os_reltime now;
4145
4146         if (info == NULL)
4147                 return -1;
4148
4149         dev = (struct p2p_device *) (((u8 *) info) -
4150                                      offsetof(struct p2p_device, info));
4151
4152         pos = buf;
4153         end = buf + buflen;
4154
4155         os_get_reltime(&now);
4156         res = os_snprintf(pos, end - pos,
4157                           "age=%d\n"
4158                           "listen_freq=%d\n"
4159                           "wps_method=%s\n"
4160                           "interface_addr=" MACSTR "\n"
4161                           "member_in_go_dev=" MACSTR "\n"
4162                           "member_in_go_iface=" MACSTR "\n"
4163                           "go_neg_req_sent=%d\n"
4164                           "go_state=%s\n"
4165                           "dialog_token=%u\n"
4166                           "intended_addr=" MACSTR "\n"
4167                           "country=%c%c\n"
4168                           "oper_freq=%d\n"
4169                           "req_config_methods=0x%x\n"
4170                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4171                           "status=%d\n"
4172                           "invitation_reqs=%u\n",
4173                           (int) (now.sec - dev->last_seen.sec),
4174                           dev->listen_freq,
4175                           p2p_wps_method_text(dev->wps_method),
4176                           MAC2STR(dev->interface_addr),
4177                           MAC2STR(dev->member_in_go_dev),
4178                           MAC2STR(dev->member_in_go_iface),
4179                           dev->go_neg_req_sent,
4180                           p2p_go_state_text(dev->go_state),
4181                           dev->dialog_token,
4182                           MAC2STR(dev->intended_addr),
4183                           dev->country[0] ? dev->country[0] : '_',
4184                           dev->country[1] ? dev->country[1] : '_',
4185                           dev->oper_freq,
4186                           dev->req_config_methods,
4187                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4188                           "[PROBE_REQ_ONLY]" : "",
4189                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4190                           dev->flags & P2P_DEV_NOT_YET_READY ?
4191                           "[NOT_YET_READY]" : "",
4192                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4193                           "[PD_PEER_DISPLAY]" : "",
4194                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4195                           "[PD_PEER_KEYPAD]" : "",
4196                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4197                           "[PD_PEER_P2PS]" : "",
4198                           dev->flags & P2P_DEV_USER_REJECTED ?
4199                           "[USER_REJECTED]" : "",
4200                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4201                           "[PEER_WAITING_RESPONSE]" : "",
4202                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4203                           "[PREFER_PERSISTENT_GROUP]" : "",
4204                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4205                           "[WAIT_GO_NEG_RESPONSE]" : "",
4206                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4207                           "[WAIT_GO_NEG_CONFIRM]" : "",
4208                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4209                           "[GROUP_CLIENT_ONLY]" : "",
4210                           dev->flags & P2P_DEV_FORCE_FREQ ?
4211                           "[FORCE_FREQ]" : "",
4212                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4213                           "[PD_FOR_JOIN]" : "",
4214                           dev->status,
4215                           dev->invitation_reqs);
4216         if (os_snprintf_error(end - pos, res))
4217                 return pos - buf;
4218         pos += res;
4219
4220         if (dev->ext_listen_period) {
4221                 res = os_snprintf(pos, end - pos,
4222                                   "ext_listen_period=%u\n"
4223                                   "ext_listen_interval=%u\n",
4224                                   dev->ext_listen_period,
4225                                   dev->ext_listen_interval);
4226                 if (os_snprintf_error(end - pos, res))
4227                         return pos - buf;
4228                 pos += res;
4229         }
4230
4231         if (dev->oper_ssid_len) {
4232                 res = os_snprintf(pos, end - pos,
4233                                   "oper_ssid=%s\n",
4234                                   wpa_ssid_txt(dev->oper_ssid,
4235                                                dev->oper_ssid_len));
4236                 if (os_snprintf_error(end - pos, res))
4237                         return pos - buf;
4238                 pos += res;
4239         }
4240
4241 #ifdef CONFIG_WIFI_DISPLAY
4242         if (dev->info.wfd_subelems) {
4243                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4244                 if (os_snprintf_error(end - pos, res))
4245                         return pos - buf;
4246                 pos += res;
4247
4248                 pos += wpa_snprintf_hex(pos, end - pos,
4249                                         wpabuf_head(dev->info.wfd_subelems),
4250                                         wpabuf_len(dev->info.wfd_subelems));
4251
4252                 res = os_snprintf(pos, end - pos, "\n");
4253                 if (os_snprintf_error(end - pos, res))
4254                         return pos - buf;
4255                 pos += res;
4256         }
4257 #endif /* CONFIG_WIFI_DISPLAY */
4258
4259         return pos - buf;
4260 }
4261
4262
4263 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4264 {
4265         return p2p_get_device(p2p, addr) != NULL;
4266 }
4267
4268
4269 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4270 {
4271         if (enabled) {
4272                 p2p_dbg(p2p, "Client discoverability enabled");
4273                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4274         } else {
4275                 p2p_dbg(p2p, "Client discoverability disabled");
4276                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4277         }
4278 }
4279
4280
4281 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4282                                               u32 duration2, u32 interval2)
4283 {
4284         struct wpabuf *req;
4285         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4286         u8 *len;
4287
4288         req = wpabuf_alloc(100);
4289         if (req == NULL)
4290                 return NULL;
4291
4292         if (duration1 || interval1) {
4293                 os_memset(&desc1, 0, sizeof(desc1));
4294                 desc1.count_type = 1;
4295                 desc1.duration = duration1;
4296                 desc1.interval = interval1;
4297                 ptr1 = &desc1;
4298
4299                 if (duration2 || interval2) {
4300                         os_memset(&desc2, 0, sizeof(desc2));
4301                         desc2.count_type = 2;
4302                         desc2.duration = duration2;
4303                         desc2.interval = interval2;
4304                         ptr2 = &desc2;
4305                 }
4306         }
4307
4308         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4309         len = p2p_buf_add_ie_hdr(req);
4310         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4311         p2p_buf_update_ie_hdr(req, len);
4312
4313         return req;
4314 }
4315
4316
4317 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4318                      const u8 *own_interface_addr, unsigned int freq,
4319                      u32 duration1, u32 interval1, u32 duration2,
4320                      u32 interval2)
4321 {
4322         struct wpabuf *req;
4323
4324         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4325                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4326                 "dur2=%u int2=%u",
4327                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4328                 freq, duration1, interval1, duration2, interval2);
4329
4330         req = p2p_build_presence_req(duration1, interval1, duration2,
4331                                      interval2);
4332         if (req == NULL)
4333                 return -1;
4334
4335         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4336         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4337                             go_interface_addr,
4338                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4339                 p2p_dbg(p2p, "Failed to send Action frame");
4340         }
4341         wpabuf_free(req);
4342
4343         return 0;
4344 }
4345
4346
4347 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4348                                                size_t noa_len, u8 dialog_token)
4349 {
4350         struct wpabuf *resp;
4351         u8 *len;
4352
4353         resp = wpabuf_alloc(100 + noa_len);
4354         if (resp == NULL)
4355                 return NULL;
4356
4357         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4358         len = p2p_buf_add_ie_hdr(resp);
4359         p2p_buf_add_status(resp, status);
4360         if (noa) {
4361                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4362                 wpabuf_put_le16(resp, noa_len);
4363                 wpabuf_put_data(resp, noa, noa_len);
4364         } else
4365                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4366         p2p_buf_update_ie_hdr(resp, len);
4367
4368         return resp;
4369 }
4370
4371
4372 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4373                                      const u8 *sa, const u8 *data, size_t len,
4374                                      int rx_freq)
4375 {
4376         struct p2p_message msg;
4377         u8 status;
4378         struct wpabuf *resp;
4379         size_t g;
4380         struct p2p_group *group = NULL;
4381         int parsed = 0;
4382         u8 noa[50];
4383         int noa_len;
4384
4385         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4386
4387         for (g = 0; g < p2p->num_groups; g++) {
4388                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4389                               ETH_ALEN) == 0) {
4390                         group = p2p->groups[g];
4391                         break;
4392                 }
4393         }
4394         if (group == NULL) {
4395                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4396                         MACSTR, MAC2STR(da));
4397                 return;
4398         }
4399
4400         if (p2p_parse(data, len, &msg) < 0) {
4401                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4402                 status = P2P_SC_FAIL_INVALID_PARAMS;
4403                 goto fail;
4404         }
4405         parsed = 1;
4406
4407         if (msg.noa == NULL) {
4408                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4409                 status = P2P_SC_FAIL_INVALID_PARAMS;
4410                 goto fail;
4411         }
4412
4413         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4414
4415 fail:
4416         if (p2p->cfg->get_noa)
4417                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4418                                             sizeof(noa));
4419         else
4420                 noa_len = -1;
4421         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4422                                        noa_len > 0 ? noa_len : 0,
4423                                        msg.dialog_token);
4424         if (parsed)
4425                 p2p_parse_free(&msg);
4426         if (resp == NULL)
4427                 return;
4428
4429         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4430         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4431                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4432                 p2p_dbg(p2p, "Failed to send Action frame");
4433         }
4434         wpabuf_free(resp);
4435 }
4436
4437
4438 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4439                                       const u8 *sa, const u8 *data, size_t len)
4440 {
4441         struct p2p_message msg;
4442
4443         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4444
4445         if (p2p_parse(data, len, &msg) < 0) {
4446                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4447                 return;
4448         }
4449
4450         if (msg.status == NULL || msg.noa == NULL) {
4451                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4452                 p2p_parse_free(&msg);
4453                 return;
4454         }
4455
4456         if (p2p->cfg->presence_resp) {
4457                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4458                                         msg.noa, msg.noa_len);
4459         }
4460
4461         if (*msg.status) {
4462                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4463                         *msg.status);
4464                 p2p_parse_free(&msg);
4465                 return;
4466         }
4467
4468         p2p_dbg(p2p, "P2P Presence Request was accepted");
4469         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4470                     msg.noa, msg.noa_len);
4471         /* TODO: process NoA */
4472         p2p_parse_free(&msg);
4473 }
4474
4475
4476 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4477 {
4478         struct p2p_data *p2p = eloop_ctx;
4479
4480         if (p2p->ext_listen_interval) {
4481                 /* Schedule next extended listen timeout */
4482                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4483                                        p2p->ext_listen_interval_usec,
4484                                        p2p_ext_listen_timeout, p2p, NULL);
4485         }
4486
4487         if ((p2p->cfg->is_p2p_in_progress &&
4488              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4489             (p2p->pending_action_state == P2P_PENDING_PD &&
4490              p2p->pd_retries > 0)) {
4491                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4492                         p2p_state_txt(p2p->state));
4493                 return;
4494         }
4495
4496         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4497                 /*
4498                  * This should not really happen, but it looks like the Listen
4499                  * command may fail is something else (e.g., a scan) was
4500                  * running at an inconvenient time. As a workaround, allow new
4501                  * Extended Listen operation to be started.
4502                  */
4503                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4504                 p2p->ext_listen_only = 0;
4505                 p2p_set_state(p2p, P2P_IDLE);
4506         }
4507
4508         if (p2p->state != P2P_IDLE) {
4509                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4510                 return;
4511         }
4512
4513         p2p_dbg(p2p, "Extended Listen timeout");
4514         p2p->ext_listen_only = 1;
4515         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4516                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4517                 p2p->ext_listen_only = 0;
4518         }
4519 }
4520
4521
4522 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4523                    unsigned int interval)
4524 {
4525         if (period > 65535 || interval > 65535 || period > interval ||
4526             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4527                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4528                         period, interval);
4529                 return -1;
4530         }
4531
4532         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4533
4534         if (interval == 0) {
4535                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4536                 p2p->ext_listen_period = 0;
4537                 p2p->ext_listen_interval = 0;
4538                 return 0;
4539         }
4540
4541         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4542                 period, interval);
4543         p2p->ext_listen_period = period;
4544         p2p->ext_listen_interval = interval;
4545         p2p->ext_listen_interval_sec = interval / 1000;
4546         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4547
4548         eloop_register_timeout(p2p->ext_listen_interval_sec,
4549                                p2p->ext_listen_interval_usec,
4550                                p2p_ext_listen_timeout, p2p, NULL);
4551
4552         return 0;
4553 }
4554
4555
4556 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4557                       const u8 *ie, size_t ie_len)
4558 {
4559         struct p2p_message msg;
4560
4561         if (bssid == NULL || ie == NULL)
4562                 return;
4563
4564         os_memset(&msg, 0, sizeof(msg));
4565         if (p2p_parse_ies(ie, ie_len, &msg))
4566                 return;
4567         if (msg.minor_reason_code == NULL) {
4568                 p2p_parse_free(&msg);
4569                 return;
4570         }
4571
4572         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4573                 " reason_code=%u minor_reason_code=%u",
4574                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4575
4576         p2p_parse_free(&msg);
4577 }
4578
4579
4580 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4581                         const u8 *ie, size_t ie_len)
4582 {
4583         struct p2p_message msg;
4584
4585         if (bssid == NULL || ie == NULL)
4586                 return;
4587
4588         os_memset(&msg, 0, sizeof(msg));
4589         if (p2p_parse_ies(ie, ie_len, &msg))
4590                 return;
4591         if (msg.minor_reason_code == NULL) {
4592                 p2p_parse_free(&msg);
4593                 return;
4594         }
4595
4596         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4597                 " reason_code=%u minor_reason_code=%u",
4598                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4599
4600         p2p_parse_free(&msg);
4601 }
4602
4603
4604 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4605 {
4606         if (enabled) {
4607                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4608                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4609         } else {
4610                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4611                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4612         }
4613 }
4614
4615
4616 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4617                                  u8 *op_channel)
4618 {
4619         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4620 }
4621
4622
4623 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4624                            u8 forced)
4625 {
4626         if (p2p_channel_to_freq(reg_class, channel) < 0)
4627                 return -1;
4628
4629         /*
4630          * Listen channel was set in configuration or set by control interface;
4631          * cannot override it.
4632          */
4633         if (p2p->cfg->channel_forced && forced == 0) {
4634                 p2p_dbg(p2p,
4635                         "Listen channel was previously configured - do not override based on optimization");
4636                 return -1;
4637         }
4638
4639         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4640                 reg_class, channel);
4641
4642         if (p2p->state == P2P_IDLE) {
4643                 p2p->cfg->reg_class = reg_class;
4644                 p2p->cfg->channel = channel;
4645                 p2p->cfg->channel_forced = forced;
4646         } else {
4647                 p2p_dbg(p2p, "Defer setting listen channel");
4648                 p2p->pending_reg_class = reg_class;
4649                 p2p->pending_channel = channel;
4650                 p2p->pending_channel_forced = forced;
4651         }
4652
4653         return 0;
4654 }
4655
4656
4657 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4658 {
4659         return p2p->cfg->channel;
4660 }
4661
4662
4663 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4664 {
4665         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4666         if (postfix == NULL) {
4667                 p2p->cfg->ssid_postfix_len = 0;
4668                 return 0;
4669         }
4670         if (len > sizeof(p2p->cfg->ssid_postfix))
4671                 return -1;
4672         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4673         p2p->cfg->ssid_postfix_len = len;
4674         return 0;
4675 }
4676
4677
4678 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4679                          int cfg_op_channel)
4680 {
4681         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4682                 return -1;
4683
4684         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4685                 op_reg_class, op_channel);
4686         p2p->cfg->op_reg_class = op_reg_class;
4687         p2p->cfg->op_channel = op_channel;
4688         p2p->cfg->cfg_op_channel = cfg_op_channel;
4689         return 0;
4690 }
4691
4692
4693 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4694                       const struct p2p_channel *pref_chan)
4695 {
4696         struct p2p_channel *n;
4697
4698         if (pref_chan) {
4699                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4700                 if (n == NULL)
4701                         return -1;
4702                 os_memcpy(n, pref_chan,
4703                           num_pref_chan * sizeof(struct p2p_channel));
4704         } else
4705                 n = NULL;
4706
4707         os_free(p2p->cfg->pref_chan);
4708         p2p->cfg->pref_chan = n;
4709         p2p->cfg->num_pref_chan = num_pref_chan;
4710
4711         return 0;
4712 }
4713
4714
4715 int p2p_set_no_go_freq(struct p2p_data *p2p,
4716                        const struct wpa_freq_range_list *list)
4717 {
4718         struct wpa_freq_range *tmp;
4719
4720         if (list == NULL || list->num == 0) {
4721                 os_free(p2p->no_go_freq.range);
4722                 p2p->no_go_freq.range = NULL;
4723                 p2p->no_go_freq.num = 0;
4724                 return 0;
4725         }
4726
4727         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4728         if (tmp == NULL)
4729                 return -1;
4730         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4731         os_free(p2p->no_go_freq.range);
4732         p2p->no_go_freq.range = tmp;
4733         p2p->no_go_freq.num = list->num;
4734         p2p_dbg(p2p, "Updated no GO chan list");
4735
4736         return 0;
4737 }
4738
4739
4740 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4741                            u8 *iface_addr)
4742 {
4743         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4744         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4745                 return -1;
4746         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4747         return 0;
4748 }
4749
4750
4751 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4752                            u8 *dev_addr)
4753 {
4754         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4755         if (dev == NULL)
4756                 return -1;
4757         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4758         return 0;
4759 }
4760
4761
4762 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4763 {
4764         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4765         if (is_zero_ether_addr(p2p->peer_filter))
4766                 p2p_dbg(p2p, "Disable peer filter");
4767         else
4768                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4769                         MAC2STR(p2p->peer_filter));
4770 }
4771
4772
4773 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4774 {
4775         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4776         if (p2p->cross_connect == enabled)
4777                 return;
4778         p2p->cross_connect = enabled;
4779         /* TODO: may need to tear down any action group where we are GO(?) */
4780 }
4781
4782
4783 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4784 {
4785         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4786         if (dev == NULL)
4787                 return -1;
4788         if (dev->oper_freq <= 0)
4789                 return -1;
4790         return dev->oper_freq;
4791 }
4792
4793
4794 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4795 {
4796         p2p_dbg(p2p, "Intra BSS distribution %s",
4797                 enabled ? "enabled" : "disabled");
4798         p2p->cfg->p2p_intra_bss = enabled;
4799 }
4800
4801
4802 void p2p_update_channel_list(struct p2p_data *p2p,
4803                              const struct p2p_channels *chan,
4804                              const struct p2p_channels *cli_chan)
4805 {
4806         p2p_dbg(p2p, "Update channel list");
4807         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4808         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4809         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4810                   sizeof(struct p2p_channels));
4811         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4812 }
4813
4814
4815 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4816                     const u8 *src, const u8 *bssid, const u8 *buf,
4817                     size_t len, unsigned int wait_time)
4818 {
4819         if (p2p->p2p_scan_running) {
4820                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4821                 if (p2p->after_scan_tx) {
4822                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4823                         os_free(p2p->after_scan_tx);
4824                 }
4825                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4826                                                len);
4827                 if (p2p->after_scan_tx == NULL)
4828                         return -1;
4829                 p2p->after_scan_tx->freq = freq;
4830                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4831                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4832                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4833                 p2p->after_scan_tx->len = len;
4834                 p2p->after_scan_tx->wait_time = wait_time;
4835                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4836                 return 0;
4837         }
4838
4839         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4840                                      buf, len, wait_time);
4841 }
4842
4843
4844 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4845                            int freq_overall)
4846 {
4847         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4848                 freq_24, freq_5, freq_overall);
4849         p2p->best_freq_24 = freq_24;
4850         p2p->best_freq_5 = freq_5;
4851         p2p->best_freq_overall = freq_overall;
4852 }
4853
4854
4855 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4856 {
4857         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4858         p2p->own_freq_preference = freq;
4859 }
4860
4861
4862 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4863 {
4864         if (p2p == NULL || p2p->go_neg_peer == NULL)
4865                 return NULL;
4866         return p2p->go_neg_peer->info.p2p_device_addr;
4867 }
4868
4869
4870 const struct p2p_peer_info *
4871 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4872 {
4873         struct p2p_device *dev;
4874
4875         if (addr) {
4876                 dev = p2p_get_device(p2p, addr);
4877                 if (!dev)
4878                         return NULL;
4879
4880                 if (!next) {
4881                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4882                                 return NULL;
4883
4884                         return &dev->info;
4885                 } else {
4886                         do {
4887                                 dev = dl_list_first(&dev->list,
4888                                                     struct p2p_device,
4889                                                     list);
4890                                 if (!dev || &dev->list == &p2p->devices)
4891                                         return NULL;
4892                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4893                 }
4894         } else {
4895                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4896                 if (!dev)
4897                         return NULL;
4898                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4899                         dev = dl_list_first(&dev->list,
4900                                             struct p2p_device,
4901                                             list);
4902                         if (!dev || &dev->list == &p2p->devices)
4903                                 return NULL;
4904                 }
4905         }
4906
4907         return &dev->info;
4908 }
4909
4910
4911 int p2p_in_progress(struct p2p_data *p2p)
4912 {
4913         if (p2p == NULL)
4914                 return 0;
4915         if (p2p->state == P2P_SEARCH)
4916                 return 2;
4917         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4918 }
4919
4920
4921 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4922                             u8 client_timeout)
4923 {
4924         if (p2p) {
4925                 p2p->go_timeout = go_timeout;
4926                 p2p->client_timeout = client_timeout;
4927         }
4928 }
4929
4930
4931 #ifdef CONFIG_WIFI_DISPLAY
4932
4933 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4934 {
4935         size_t g;
4936         struct p2p_group *group;
4937
4938         for (g = 0; g < p2p->num_groups; g++) {
4939                 group = p2p->groups[g];
4940                 p2p_group_force_beacon_update_ies(group);
4941         }
4942 }
4943
4944
4945 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4946 {
4947         wpabuf_free(p2p->wfd_ie_beacon);
4948         p2p->wfd_ie_beacon = ie;
4949         p2p_update_wfd_ie_groups(p2p);
4950         return 0;
4951 }
4952
4953
4954 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4955 {
4956         wpabuf_free(p2p->wfd_ie_probe_req);
4957         p2p->wfd_ie_probe_req = ie;
4958         return 0;
4959 }
4960
4961
4962 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4963 {
4964         wpabuf_free(p2p->wfd_ie_probe_resp);
4965         p2p->wfd_ie_probe_resp = ie;
4966         p2p_update_wfd_ie_groups(p2p);
4967         return 0;
4968 }
4969
4970
4971 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4972 {
4973         wpabuf_free(p2p->wfd_ie_assoc_req);
4974         p2p->wfd_ie_assoc_req = ie;
4975         return 0;
4976 }
4977
4978
4979 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4980 {
4981         wpabuf_free(p2p->wfd_ie_invitation);
4982         p2p->wfd_ie_invitation = ie;
4983         return 0;
4984 }
4985
4986
4987 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4988 {
4989         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4990         p2p->wfd_ie_prov_disc_req = ie;
4991         return 0;
4992 }
4993
4994
4995 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4996 {
4997         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4998         p2p->wfd_ie_prov_disc_resp = ie;
4999         return 0;
5000 }
5001
5002
5003 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5004 {
5005         wpabuf_free(p2p->wfd_ie_go_neg);
5006         p2p->wfd_ie_go_neg = ie;
5007         return 0;
5008 }
5009
5010
5011 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5012 {
5013         wpabuf_free(p2p->wfd_dev_info);
5014         if (elem) {
5015                 p2p->wfd_dev_info = wpabuf_dup(elem);
5016                 if (p2p->wfd_dev_info == NULL)
5017                         return -1;
5018         } else
5019                 p2p->wfd_dev_info = NULL;
5020
5021         return 0;
5022 }
5023
5024
5025 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5026 {
5027         wpabuf_free(p2p->wfd_assoc_bssid);
5028         if (elem) {
5029                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5030                 if (p2p->wfd_assoc_bssid == NULL)
5031                         return -1;
5032         } else
5033                 p2p->wfd_assoc_bssid = NULL;
5034
5035         return 0;
5036 }
5037
5038
5039 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5040                                   const struct wpabuf *elem)
5041 {
5042         wpabuf_free(p2p->wfd_coupled_sink_info);
5043         if (elem) {
5044                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5045                 if (p2p->wfd_coupled_sink_info == NULL)
5046                         return -1;
5047         } else
5048                 p2p->wfd_coupled_sink_info = NULL;
5049
5050         return 0;
5051 }
5052
5053 #endif /* CONFIG_WIFI_DISPLAY */
5054
5055
5056 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5057                      int max_disc_tu)
5058 {
5059         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5060                 return -1;
5061
5062         p2p->min_disc_int = min_disc_int;
5063         p2p->max_disc_int = max_disc_int;
5064         p2p->max_disc_tu = max_disc_tu;
5065         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5066                 min_disc_int, max_disc_int, max_disc_tu);
5067
5068         return 0;
5069 }
5070
5071
5072 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5073 {
5074         va_list ap;
5075         char buf[500];
5076
5077         if (!p2p->cfg->debug_print)
5078                 return;
5079
5080         va_start(ap, fmt);
5081         vsnprintf(buf, sizeof(buf), fmt, ap);
5082         buf[sizeof(buf) - 1] = '\0';
5083         va_end(ap);
5084         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5085 }
5086
5087
5088 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5089 {
5090         va_list ap;
5091         char buf[500];
5092
5093         if (!p2p->cfg->debug_print)
5094                 return;
5095
5096         va_start(ap, fmt);
5097         vsnprintf(buf, sizeof(buf), fmt, ap);
5098         buf[sizeof(buf) - 1] = '\0';
5099         va_end(ap);
5100         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5101 }
5102
5103
5104 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5105 {
5106         va_list ap;
5107         char buf[500];
5108
5109         if (!p2p->cfg->debug_print)
5110                 return;
5111
5112         va_start(ap, fmt);
5113         vsnprintf(buf, sizeof(buf), fmt, ap);
5114         buf[sizeof(buf) - 1] = '\0';
5115         va_end(ap);
5116         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5117 }
5118
5119
5120 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5121                              void (*peer_callback)(struct p2p_peer_info *peer,
5122                                                    void *user_data),
5123                              void *user_data)
5124 {
5125         struct p2p_device *dev, *n;
5126
5127         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5128                 peer_callback(&dev->info, user_data);
5129         }
5130 }
5131
5132
5133 #ifdef CONFIG_WPS_NFC
5134
5135 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5136                                               int client_freq,
5137                                               const u8 *go_dev_addr,
5138                                               const u8 *ssid, size_t ssid_len)
5139 {
5140         struct wpabuf *buf;
5141         u8 op_class, channel;
5142         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5143
5144         buf = wpabuf_alloc(1000);
5145         if (buf == NULL)
5146                 return NULL;
5147
5148         op_class = p2p->cfg->reg_class;
5149         channel = p2p->cfg->channel;
5150
5151         p2p_buf_add_capability(buf, p2p->dev_capab &
5152                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5153         p2p_buf_add_device_info(buf, p2p, NULL);
5154
5155         if (p2p->num_groups > 0) {
5156                 int freq = p2p_group_get_freq(p2p->groups[0]);
5157                 role = P2P_GO_IN_A_GROUP;
5158                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5159                         p2p_dbg(p2p,
5160                                 "Unknown GO operating frequency %d MHz for NFC handover",
5161                                 freq);
5162                         wpabuf_free(buf);
5163                         return NULL;
5164                 }
5165         } else if (client_freq > 0) {
5166                 role = P2P_CLIENT_IN_A_GROUP;
5167                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5168                         p2p_dbg(p2p,
5169                                 "Unknown client operating frequency %d MHz for NFC handover",
5170                                 client_freq);
5171                         wpabuf_free(buf);
5172                         return NULL;
5173                 }
5174         }
5175
5176         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5177                                        channel, role);
5178
5179         if (p2p->num_groups > 0) {
5180                 /* Limit number of clients to avoid very long message */
5181                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5182                 p2p_group_buf_add_id(p2p->groups[0], buf);
5183         } else if (client_freq > 0 &&
5184                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5185                    ssid && ssid_len > 0) {
5186                 /*
5187                  * Add the optional P2P Group ID to indicate in which group this
5188                  * device is a P2P Client.
5189                  */
5190                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5191         }
5192
5193         return buf;
5194 }
5195
5196
5197 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5198                                            int client_freq,
5199                                            const u8 *go_dev_addr,
5200                                            const u8 *ssid, size_t ssid_len)
5201 {
5202         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5203                                       ssid_len);
5204 }
5205
5206
5207 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5208                                            int client_freq,
5209                                            const u8 *go_dev_addr,
5210                                            const u8 *ssid, size_t ssid_len)
5211 {
5212         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5213                                       ssid_len);
5214 }
5215
5216
5217 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5218                                         struct p2p_nfc_params *params)
5219 {
5220         struct p2p_message msg;
5221         struct p2p_device *dev;
5222         const u8 *p2p_dev_addr;
5223         int freq;
5224         enum p2p_role_indication role;
5225
5226         params->next_step = NO_ACTION;
5227
5228         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5229                                    params->p2p_attr, params->p2p_len, &msg)) {
5230                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5231                 p2p_parse_free(&msg);
5232                 return -1;
5233         }
5234
5235         if (msg.p2p_device_addr)
5236                 p2p_dev_addr = msg.p2p_device_addr;
5237         else if (msg.device_id)
5238                 p2p_dev_addr = msg.device_id;
5239         else {
5240                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5241                 p2p_parse_free(&msg);
5242                 return -1;
5243         }
5244
5245         if (msg.oob_dev_password) {
5246                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5247                           msg.oob_dev_password_len);
5248                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5249         }
5250
5251         dev = p2p_create_device(p2p, p2p_dev_addr);
5252         if (dev == NULL) {
5253                 p2p_parse_free(&msg);
5254                 return -1;
5255         }
5256
5257         params->peer = &dev->info;
5258
5259         os_get_reltime(&dev->last_seen);
5260         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5261         p2p_copy_wps_info(p2p, dev, 0, &msg);
5262
5263         if (!msg.oob_go_neg_channel) {
5264                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5265                 return -1;
5266         }
5267
5268         if (msg.oob_go_neg_channel[3] == 0 &&
5269             msg.oob_go_neg_channel[4] == 0)
5270                 freq = 0;
5271         else
5272                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5273                                            msg.oob_go_neg_channel[4]);
5274         if (freq < 0) {
5275                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5276                 return -1;
5277         }
5278         role = msg.oob_go_neg_channel[5];
5279
5280         if (role == P2P_GO_IN_A_GROUP) {
5281                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5282                 params->go_freq = freq;
5283         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5284                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5285                         freq);
5286                 params->go_freq = freq;
5287         } else
5288                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5289         dev->oob_go_neg_freq = freq;
5290
5291         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5292                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5293                                            p2p->cfg->channel);
5294                 if (freq < 0) {
5295                         p2p_dbg(p2p, "Own listen channel not known");
5296                         return -1;
5297                 }
5298                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5299                 dev->oob_go_neg_freq = freq;
5300         }
5301
5302         if (msg.group_id) {
5303                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5304                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5305                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5306                           params->go_ssid_len);
5307         }
5308
5309         if (dev->flags & P2P_DEV_USER_REJECTED) {
5310                 p2p_dbg(p2p, "Do not report rejected device");
5311                 p2p_parse_free(&msg);
5312                 return 0;
5313         }
5314
5315         if (!(dev->flags & P2P_DEV_REPORTED)) {
5316                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5317                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5318                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5319         }
5320         p2p_parse_free(&msg);
5321
5322         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5323                 params->next_step = BOTH_GO;
5324         else if (role == P2P_GO_IN_A_GROUP)
5325                 params->next_step = JOIN_GROUP;
5326         else if (role == P2P_CLIENT_IN_A_GROUP) {
5327                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5328                 params->next_step = PEER_CLIENT;
5329         } else if (p2p->num_groups > 0)
5330                 params->next_step = AUTH_JOIN;
5331         else if (params->sel)
5332                 params->next_step = INIT_GO_NEG;
5333         else
5334                 params->next_step = RESP_GO_NEG;
5335
5336         return 0;
5337 }
5338
5339
5340 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5341                                       int go_intent,
5342                                       const u8 *own_interface_addr)
5343 {
5344
5345         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5346         if (dev_pw_id == 0) {
5347                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5348                 return;
5349         }
5350
5351         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5352                 dev_pw_id);
5353
5354         p2p->go_intent = go_intent;
5355         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5356 }
5357
5358 #endif /* CONFIG_WPS_NFC */
5359
5360
5361 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5362 {
5363         if (len < 8 || len > 63)
5364                 return -1;
5365         p2p->cfg->passphrase_len = len;
5366         return 0;
5367 }
5368
5369
5370 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5371 {
5372         p2p->vendor_elem = vendor_elem;
5373 }
5374
5375
5376 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5377 {
5378         struct p2p_data *p2p = eloop_ctx;
5379
5380         p2p_dbg(p2p,
5381                 "Timeout on waiting peer to become ready for GO Negotiation");
5382         p2p_go_neg_failed(p2p, -1);
5383 }