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 "wps/wps_i.h"
  16 #include "p2p_i.h"
  17 #include "p2p.h"
  18
  19
  20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  23                                      const u8 *sa, const u8 *data, size_t len,
  24                                      int rx_freq);
  25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  26                                       const u8 *sa, const u8 *data,
  27                                       size_t len);
  28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  30
  31
  32 /*
  33  * p2p_scan recovery timeout
  34  *
  35  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  36  * timeout for this to avoid hitting P2P timeout unnecessarily.
  37  */
  38 #define P2P_SCAN_TIMEOUT 35
  39
  40 /**
  41  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  42  * entries will be removed
  43  */
  44 #define P2P_PEER_EXPIRATION_AGE 300
  45
  46 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  47
  48 static void p2p_expire_peers(struct p2p_data *p2p)
  49 {
  50         struct p2p_device *dev, *n;
  51         struct os_reltime now;
  52         size_t i;
  53
  54         os_get_reltime(&now);
  55         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  56                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  57                         continue;
  58
  59                 if (p2p->cfg->go_connected &&
  60                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  61                                            dev->info.p2p_device_addr)) {
  62                         /*
  63                          * We are connected as a client to a group in which the
  64                          * peer is the GO, so do not expire the peer entry.
  65                          */
  66                         os_get_reltime(&dev->last_seen);
  67                         continue;
  68                 }
  69
  70                 for (i = 0; i < p2p->num_groups; i++) {
  71                         if (p2p_group_is_client_connected(
  72                                     p2p->groups[i], dev->info.p2p_device_addr))
  73                                 break;
  74                 }
  75                 if (i < p2p->num_groups) {
  76                         /*
  77                          * The peer is connected as a client in a group where
  78                          * we are the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_reltime(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  85                         MAC2STR(dev->info.p2p_device_addr));
  86                 dl_list_del(&dev->list);
  87                 p2p_device_free(p2p, dev);
  88         }
  89 }
  90
  91
  92 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
  93 {
  94         struct p2p_data *p2p = eloop_ctx;
  95         p2p_expire_peers(p2p);
  96         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
  97                                p2p_expiration_timeout, p2p, NULL);
  98 }
  99
 100
 101 static const char * p2p_state_txt(int state)
 102 {
 103         switch (state) {
 104         case P2P_IDLE:
 105                 return "IDLE";
 106         case P2P_SEARCH:
 107                 return "SEARCH";
 108         case P2P_CONNECT:
 109                 return "CONNECT";
 110         case P2P_CONNECT_LISTEN:
 111                 return "CONNECT_LISTEN";
 112         case P2P_GO_NEG:
 113                 return "GO_NEG";
 114         case P2P_LISTEN_ONLY:
 115                 return "LISTEN_ONLY";
 116         case P2P_WAIT_PEER_CONNECT:
 117                 return "WAIT_PEER_CONNECT";
 118         case P2P_WAIT_PEER_IDLE:
 119                 return "WAIT_PEER_IDLE";
 120         case P2P_SD_DURING_FIND:
 121                 return "SD_DURING_FIND";
 122         case P2P_PROVISIONING:
 123                 return "PROVISIONING";
 124         case P2P_PD_DURING_FIND:
 125                 return "PD_DURING_FIND";
 126         case P2P_INVITE:
 127                 return "INVITE";
 128         case P2P_INVITE_LISTEN:
 129                 return "INVITE_LISTEN";
 130         case P2P_SEARCH_WHEN_READY:
 131                 return "SEARCH_WHEN_READY";
 132         case P2P_CONTINUE_SEARCH_WHEN_READY:
 133                 return "CONTINUE_SEARCH_WHEN_READY";
 134         default:
 135                 return "?";
 136         }
 137 }
 138
 139
 140 const char * p2p_get_state_txt(struct p2p_data *p2p)
 141 {
 142         return p2p_state_txt(p2p->state);
 143 }
 144
 145
 146 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 147 {
 148         struct p2p_device *dev = NULL;
 149
 150         if (!addr || !p2p)
 151                 return 0;
 152
 153         dev = p2p_get_device(p2p, addr);
 154         if (dev)
 155                 return dev->wps_prov_info;
 156         else
 157                 return 0;
 158 }
 159
 160
 161 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 162 {
 163         struct p2p_device *dev = NULL;
 164
 165         if (!addr || !p2p)
 166                 return;
 167
 168         dev = p2p_get_device(p2p, addr);
 169         if (dev)
 170                 dev->wps_prov_info = 0;
 171 }
 172
 173
 174 void p2p_set_state(struct p2p_data *p2p, int new_state)
 175 {
 176         p2p_dbg(p2p, "State %s -> %s",
 177                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 178         p2p->state = new_state;
 179 }
 180
 181
 182 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 183 {
 184         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 185                 p2p_state_txt(p2p->state), sec, usec);
 186         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 187         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 188 }
 189
 190
 191 void p2p_clear_timeout(struct p2p_data *p2p)
 192 {
 193         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 194         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 195 }
 196
 197
 198 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 199                        int status)
 200 {
 201         struct p2p_go_neg_results res;
 202         p2p_clear_timeout(p2p);
 203         p2p_set_state(p2p, P2P_IDLE);
 204         if (p2p->go_neg_peer) {
 205                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 206                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 207         }
 208         p2p->go_neg_peer = NULL;
 209
 210         os_memset(&res, 0, sizeof(res));
 211         res.status = status;
 212         if (peer) {
 213                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 214                           ETH_ALEN);
 215                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 216                           ETH_ALEN);
 217         }
 218         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 219 }
 220
 221
 222 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 223 {
 224         unsigned int r, tu;
 225         int freq;
 226         struct wpabuf *ies;
 227
 228         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 229                 p2p_state_txt(p2p->state));
 230
 231         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 232         if (freq < 0) {
 233                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 234                 return;
 235         }
 236
 237         os_get_random((u8 *) &r, sizeof(r));
 238         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 239               p2p->min_disc_int) * 100;
 240         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 241                 tu = p2p->max_disc_tu;
 242         if (!dev_disc && tu < 100)
 243                 tu = 100; /* Need to wait in non-device discovery use cases */
 244         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 245                 tu = p2p->cfg->max_listen * 1000 / 1024;
 246
 247         if (tu == 0) {
 248                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 249                 p2p_set_timeout(p2p, 0, 0);
 250                 return;
 251         }
 252
 253         p2p->pending_listen_freq = freq;
 254         p2p->pending_listen_sec = 0;
 255         p2p->pending_listen_usec = 1024 * tu;
 256
 257         ies = p2p_build_probe_resp_ies(p2p);
 258         if (ies == NULL)
 259                 return;
 260
 261         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 262                     ies) < 0) {
 263                 p2p_dbg(p2p, "Failed to start listen mode");
 264                 p2p->pending_listen_freq = 0;
 265         }
 266         wpabuf_free(ies);
 267 }
 268
 269
 270 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 271 {
 272         int freq;
 273         struct wpabuf *ies;
 274
 275         p2p_dbg(p2p, "Going to listen(only) state");
 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 -1;
 281         }
 282
 283         p2p->pending_listen_freq = freq;
 284         p2p->pending_listen_sec = timeout / 1000;
 285         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 286
 287         if (p2p->p2p_scan_running) {
 288                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 289                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 290                         return 0;
 291                 }
 292                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 293                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 294                 return 0;
 295         }
 296
 297         ies = p2p_build_probe_resp_ies(p2p);
 298         if (ies == NULL)
 299                 return -1;
 300
 301         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 302                 p2p_dbg(p2p, "Failed to start listen mode");
 303                 p2p->pending_listen_freq = 0;
 304                 wpabuf_free(ies);
 305                 return -1;
 306         }
 307         wpabuf_free(ies);
 308
 309         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 310
 311         return 0;
 312 }
 313
 314
 315 static void p2p_device_clear_reported(struct p2p_data *p2p)
 316 {
 317         struct p2p_device *dev;
 318         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 319                 dev->flags &= ~P2P_DEV_REPORTED;
 320 }
 321
 322
 323 /**
 324  * p2p_get_device - Fetch a peer entry
 325  * @p2p: P2P module context from p2p_init()
 326  * @addr: P2P Device Address of the peer
 327  * Returns: Pointer to the device entry or %NULL if not found
 328  */
 329 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 330 {
 331         struct p2p_device *dev;
 332         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 333                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 334                         return dev;
 335         }
 336         return NULL;
 337 }
 338
 339
 340 /**
 341  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 342  * @p2p: P2P module context from p2p_init()
 343  * @addr: P2P Interface Address of the peer
 344  * Returns: Pointer to the device entry or %NULL if not found
 345  */
 346 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 347                                              const u8 *addr)
 348 {
 349         struct p2p_device *dev;
 350         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 351                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 352                         return dev;
 353         }
 354         return NULL;
 355 }
 356
 357
 358 /**
 359  * p2p_create_device - Create a peer entry
 360  * @p2p: P2P module context from p2p_init()
 361  * @addr: P2P Device Address of the peer
 362  * Returns: Pointer to the device entry or %NULL on failure
 363  *
 364  * If there is already an entry for the peer, it will be returned instead of
 365  * creating a new one.
 366  */
 367 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 368                                              const u8 *addr)
 369 {
 370         struct p2p_device *dev, *oldest = NULL;
 371         size_t count = 0;
 372
 373         dev = p2p_get_device(p2p, addr);
 374         if (dev)
 375                 return dev;
 376
 377         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 378                 count++;
 379                 if (oldest == NULL ||
 380                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 381                         oldest = dev;
 382         }
 383         if (count + 1 > p2p->cfg->max_peers && oldest) {
 384                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 385                 dl_list_del(&oldest->list);
 386                 p2p_device_free(p2p, oldest);
 387         }
 388
 389         dev = os_zalloc(sizeof(*dev));
 390         if (dev == NULL)
 391                 return NULL;
 392         dl_list_add(&p2p->devices, &dev->list);
 393         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 394
 395         return dev;
 396 }
 397
 398
 399 static void p2p_copy_client_info(struct p2p_device *dev,
 400                                  struct p2p_client_info *cli)
 401 {
 402         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 403         dev->info.device_name[cli->dev_name_len] = '\0';
 404         dev->info.dev_capab = cli->dev_capab;
 405         dev->info.config_methods = cli->config_methods;
 406         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 407         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 408         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 409                   dev->info.wps_sec_dev_type_list_len);
 410 }
 411
 412
 413 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 414                                  const u8 *go_interface_addr, int freq,
 415                                  const u8 *gi, size_t gi_len)
 416 {
 417         struct p2p_group_info info;
 418         size_t c;
 419         struct p2p_device *dev;
 420
 421         if (gi == NULL)
 422                 return 0;
 423
 424         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 425                 return -1;
 426
 427         /*
 428          * Clear old data for this group; if the devices are still in the
 429          * group, the information will be restored in the loop following this.
 430          */
 431         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 432                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 433                               ETH_ALEN) == 0) {
 434                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 435                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 436                 }
 437         }
 438
 439         for (c = 0; c < info.num_clients; c++) {
 440                 struct p2p_client_info *cli = &info.client[c];
 441                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 442                               ETH_ALEN) == 0)
 443                         continue; /* ignore our own entry */
 444                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 445                 if (dev) {
 446                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 447                                           P2P_DEV_PROBE_REQ_ONLY)) {
 448                                 /*
 449                                  * Update information since we have not
 450                                  * received this directly from the client.
 451                                  */
 452                                 p2p_copy_client_info(dev, cli);
 453                         } else {
 454                                 /*
 455                                  * Need to update P2P Client Discoverability
 456                                  * flag since it is valid only in P2P Group
 457                                  * Info attribute.
 458                                  */
 459                                 dev->info.dev_capab &=
 460                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 461                                 dev->info.dev_capab |=
 462                                         cli->dev_capab &
 463                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 464                         }
 465                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 466                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 467                         }
 468                 } else {
 469                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 470                         if (dev == NULL)
 471                                 continue;
 472                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 473                         p2p_copy_client_info(dev, cli);
 474                         dev->oper_freq = freq;
 475                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 476                                             dev->info.p2p_device_addr,
 477                                             &dev->info, 1);
 478                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 479                 }
 480
 481                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 482                           ETH_ALEN);
 483                 os_get_reltime(&dev->last_seen);
 484                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 485                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 486                           ETH_ALEN);
 487         }
 488
 489         return 0;
 490 }
 491
 492
 493 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 494                               int probe_req, const struct p2p_message *msg)
 495 {
 496         os_memcpy(dev->info.device_name, msg->device_name,
 497                   sizeof(dev->info.device_name));
 498
 499         if (msg->manufacturer &&
 500             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 501                 os_memset(dev->info.manufacturer, 0,
 502                           sizeof(dev->info.manufacturer));
 503                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 504                           msg->manufacturer_len);
 505         }
 506
 507         if (msg->model_name &&
 508             msg->model_name_len < sizeof(dev->info.model_name)) {
 509                 os_memset(dev->info.model_name, 0,
 510                           sizeof(dev->info.model_name));
 511                 os_memcpy(dev->info.model_name, msg->model_name,
 512                           msg->model_name_len);
 513         }
 514
 515         if (msg->model_number &&
 516             msg->model_number_len < sizeof(dev->info.model_number)) {
 517                 os_memset(dev->info.model_number, 0,
 518                           sizeof(dev->info.model_number));
 519                 os_memcpy(dev->info.model_number, msg->model_number,
 520                           msg->model_number_len);
 521         }
 522
 523         if (msg->serial_number &&
 524             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 525                 os_memset(dev->info.serial_number, 0,
 526                           sizeof(dev->info.serial_number));
 527                 os_memcpy(dev->info.serial_number, msg->serial_number,
 528                           msg->serial_number_len);
 529         }
 530
 531         if (msg->pri_dev_type)
 532                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 533                           sizeof(dev->info.pri_dev_type));
 534         else if (msg->wps_pri_dev_type)
 535                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 536                           sizeof(dev->info.pri_dev_type));
 537
 538         if (msg->wps_sec_dev_type_list) {
 539                 os_memcpy(dev->info.wps_sec_dev_type_list,
 540                           msg->wps_sec_dev_type_list,
 541                           msg->wps_sec_dev_type_list_len);
 542                 dev->info.wps_sec_dev_type_list_len =
 543                         msg->wps_sec_dev_type_list_len;
 544         }
 545
 546         if (msg->capability) {
 547                 /*
 548                  * P2P Client Discoverability bit is reserved in all frames
 549                  * that use this function, so do not change its value here.
 550                  */
 551                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 552                 dev->info.dev_capab |= msg->capability[0] &
 553                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 554                 dev->info.group_capab = msg->capability[1];
 555         }
 556
 557         if (msg->ext_listen_timing) {
 558                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 559                 dev->ext_listen_interval =
 560                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 561         }
 562
 563         if (!probe_req) {
 564                 u16 new_config_methods;
 565                 new_config_methods = msg->config_methods ?
 566                         msg->config_methods : msg->wps_config_methods;
 567                 if (new_config_methods &&
 568                     dev->info.config_methods != new_config_methods) {
 569                         p2p_dbg(p2p, "Update peer " MACSTR
 570                                 " config_methods 0x%x -> 0x%x",
 571                                 MAC2STR(dev->info.p2p_device_addr),
 572                                 dev->info.config_methods,
 573                                 new_config_methods);
 574                         dev->info.config_methods = new_config_methods;
 575                 }
 576         }
 577 }
 578
 579
 580 /**
 581  * p2p_add_device - Add peer entries based on scan results or P2P frames
 582  * @p2p: P2P module context from p2p_init()
 583  * @addr: Source address of Beacon or Probe Response frame (may be either
 584  *      P2P Device Address or P2P Interface Address)
 585  * @level: Signal level (signal strength of the received frame from the peer)
 586  * @freq: Frequency on which the Beacon or Probe Response frame was received
 587  * @rx_time: Time when the result was received
 588  * @ies: IEs from the Beacon or Probe Response frame
 589  * @ies_len: Length of ies buffer in octets
 590  * @scan_res: Whether this was based on scan results
 591  * Returns: 0 on success, -1 on failure
 592  *
 593  * If the scan result is for a GO, the clients in the group will also be added
 594  * to the peer table. This function can also be used with some other frames
 595  * like Provision Discovery Request that contains P2P Capability and P2P Device
 596  * Info attributes.
 597  */
 598 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 599                    struct os_reltime *rx_time, int level, const u8 *ies,
 600                    size_t ies_len, int scan_res)
 601 {
 602         struct p2p_device *dev;
 603         struct p2p_message msg;
 604         const u8 *p2p_dev_addr;
 605         int i;
 606         struct os_reltime time_now;
 607
 608         os_memset(&msg, 0, sizeof(msg));
 609         if (p2p_parse_ies(ies, ies_len, &msg)) {
 610                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 611                 p2p_parse_free(&msg);
 612                 return -1;
 613         }
 614
 615         if (msg.p2p_device_addr)
 616                 p2p_dev_addr = msg.p2p_device_addr;
 617         else if (msg.device_id)
 618                 p2p_dev_addr = msg.device_id;
 619         else {
 620                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 621                 p2p_parse_free(&msg);
 622                 return -1;
 623         }
 624
 625         if (!is_zero_ether_addr(p2p->peer_filter) &&
 626             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 627                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 628                         " due to peer filter", MAC2STR(p2p_dev_addr));
 629                 p2p_parse_free(&msg);
 630                 return 0;
 631         }
 632
 633         dev = p2p_create_device(p2p, p2p_dev_addr);
 634         if (dev == NULL) {
 635                 p2p_parse_free(&msg);
 636                 return -1;
 637         }
 638
 639         if (rx_time == NULL) {
 640                 os_get_reltime(&time_now);
 641                 rx_time = &time_now;
 642         }
 643
 644         /*
 645          * Update the device entry only if the new peer
 646          * entry is newer than the one previously stored.
 647          */
 648         if (dev->last_seen.sec > 0 &&
 649             os_reltime_before(rx_time, &dev->last_seen)) {
 650                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 651                         (unsigned int) rx_time->sec,
 652                         (unsigned int) rx_time->usec,
 653                         (unsigned int) dev->last_seen.sec,
 654                         (unsigned int) dev->last_seen.usec);
 655                 p2p_parse_free(&msg);
 656                 return -1;
 657         }
 658
 659         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 660
 661         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 662
 663         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 664                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 665         if (msg.ssid &&
 666             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 667              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 668              != 0)) {
 669                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 670                 dev->oper_ssid_len = msg.ssid[1];
 671         }
 672
 673         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 674             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 675                 int ds_freq;
 676                 if (*msg.ds_params == 14)
 677                         ds_freq = 2484;
 678                 else
 679                         ds_freq = 2407 + *msg.ds_params * 5;
 680                 if (freq != ds_freq) {
 681                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 682                                 freq, ds_freq);
 683                         freq = ds_freq;
 684                 }
 685         }
 686
 687         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 688                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 689                         MACSTR " %d -> %d MHz (DS param %d)",
 690                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 691                         freq, msg.ds_params ? *msg.ds_params : -1);
 692         }
 693         if (scan_res) {
 694                 dev->listen_freq = freq;
 695                 if (msg.group_info)
 696                         dev->oper_freq = freq;
 697         }
 698         dev->info.level = level;
 699
 700         p2p_copy_wps_info(p2p, dev, 0, &msg);
 701
 702         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 703                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 704                 dev->info.wps_vendor_ext[i] = NULL;
 705         }
 706
 707         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 708                 if (msg.wps_vendor_ext[i] == NULL)
 709                         break;
 710                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 711                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 712                 if (dev->info.wps_vendor_ext[i] == NULL)
 713                         break;
 714         }
 715
 716         if (msg.wfd_subelems) {
 717                 wpabuf_free(dev->info.wfd_subelems);
 718                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 719         }
 720
 721         if (scan_res) {
 722                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 723                                       msg.group_info, msg.group_info_len);
 724         }
 725
 726         p2p_parse_free(&msg);
 727
 728         if (p2p_pending_sd_req(p2p, dev))
 729                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 730
 731         if (dev->flags & P2P_DEV_REPORTED)
 732                 return 0;
 733
 734         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 735                 freq, (unsigned int) rx_time->sec,
 736                 (unsigned int) rx_time->usec);
 737         if (dev->flags & P2P_DEV_USER_REJECTED) {
 738                 p2p_dbg(p2p, "Do not report rejected device");
 739                 return 0;
 740         }
 741
 742         if (dev->info.config_methods == 0 &&
 743             (freq == 2412 || freq == 2437 || freq == 2462)) {
 744                 /*
 745                  * If we have only seen a Beacon frame from a GO, we do not yet
 746                  * know what WPS config methods it supports. Since some
 747                  * applications use config_methods value from P2P-DEVICE-FOUND
 748                  * events, postpone reporting this peer until we've fully
 749                  * discovered its capabilities.
 750                  *
 751                  * At least for now, do this only if the peer was detected on
 752                  * one of the social channels since that peer can be easily be
 753                  * found again and there are no limitations of having to use
 754                  * passive scan on this channels, so this can be done through
 755                  * Probe Response frame that includes the config_methods
 756                  * information.
 757                  */
 758                 p2p_dbg(p2p, "Do not report peer " MACSTR
 759                         " with unknown config methods", MAC2STR(addr));
 760                 return 0;
 761         }
 762
 763         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 764                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 765         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 766
 767         return 0;
 768 }
 769
 770
 771 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 772 {
 773         int i;
 774
 775         if (p2p->go_neg_peer == dev) {
 776                 /*
 777                  * If GO Negotiation is in progress, report that it has failed.
 778                  */
 779                 p2p_go_neg_failed(p2p, dev, -1);
 780                 p2p->go_neg_peer = NULL;
 781         }
 782         if (p2p->invite_peer == dev)
 783                 p2p->invite_peer = NULL;
 784         if (p2p->sd_peer == dev)
 785                 p2p->sd_peer = NULL;
 786         if (p2p->pending_client_disc_go == dev)
 787                 p2p->pending_client_disc_go = NULL;
 788
 789         /* dev_lost() device, but only if it was previously dev_found() */
 790         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 791                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 792                                    dev->info.p2p_device_addr);
 793
 794         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 795                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 796                 dev->info.wps_vendor_ext[i] = NULL;
 797         }
 798
 799         wpabuf_free(dev->info.wfd_subelems);
 800
 801         os_free(dev);
 802 }
 803
 804
 805 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 806 {
 807         struct p2p_channels *c;
 808         struct p2p_reg_class *cla;
 809         size_t cl, ch;
 810         int found = 0;
 811         u8 reg_class;
 812         u8 channel;
 813         int freq;
 814
 815         c = &p2p->cfg->channels;
 816         for (cl = 0; cl < c->reg_classes; cl++) {
 817                 cla = &c->reg_class[cl];
 818                 if (cla->reg_class != p2p->last_prog_scan_class)
 819                         continue;
 820                 for (ch = 0; ch < cla->channels; ch++) {
 821                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 822                                 found = 1;
 823                                 break;
 824                         }
 825                 }
 826                 if (found)
 827                         break;
 828         }
 829
 830         if (!found) {
 831                 /* Start from beginning */
 832                 reg_class = c->reg_class[0].reg_class;
 833                 channel = c->reg_class[0].channel[0];
 834         } else {
 835                 /* Pick the next channel */
 836                 ch++;
 837                 if (ch == cla->channels) {
 838                         cl++;
 839                         if (cl == c->reg_classes)
 840                                 cl = 0;
 841                         ch = 0;
 842                 }
 843                 reg_class = c->reg_class[cl].reg_class;
 844                 channel = c->reg_class[cl].channel[ch];
 845         }
 846
 847         freq = p2p_channel_to_freq(reg_class, channel);
 848         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 849                 reg_class, channel, freq);
 850         p2p->last_prog_scan_class = reg_class;
 851         p2p->last_prog_scan_chan = channel;
 852
 853         if (freq == 2412 || freq == 2437 || freq == 2462)
 854                 return 0; /* No need to add social channels */
 855         return freq;
 856 }
 857
 858
 859 static void p2p_search(struct p2p_data *p2p)
 860 {
 861         int freq = 0;
 862         enum p2p_scan_type type;
 863         u16 pw_id = DEV_PW_DEFAULT;
 864         int res;
 865
 866         if (p2p->drv_in_listen) {
 867                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 868                 return;
 869         }
 870         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 871
 872         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 873             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 874                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 875                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 876         } else {
 877                 type = P2P_SCAN_SOCIAL;
 878                 p2p_dbg(p2p, "Starting search");
 879         }
 880
 881         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 882                                  p2p->num_req_dev_types, p2p->req_dev_types,
 883                                  p2p->find_dev_id, pw_id);
 884         if (res < 0) {
 885                 p2p_dbg(p2p, "Scan request failed");
 886                 p2p_continue_find(p2p);
 887         } else if (res == 1) {
 888                 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
 889                 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
 890         } else {
 891                 p2p_dbg(p2p, "Running p2p_scan");
 892                 p2p->p2p_scan_running = 1;
 893                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 894                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 895                                        p2p, NULL);
 896         }
 897 }
 898
 899
 900 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 901 {
 902         struct p2p_data *p2p = eloop_ctx;
 903         p2p_dbg(p2p, "Find timeout -> stop");
 904         p2p_stop_find(p2p);
 905 }
 906
 907
 908 static int p2p_run_after_scan(struct p2p_data *p2p)
 909 {
 910         struct p2p_device *dev;
 911         enum p2p_after_scan op;
 912
 913         if (p2p->after_scan_tx) {
 914                 p2p->after_scan_tx_in_progress = 1;
 915                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
 916                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 917                                       p2p->after_scan_tx->freq,
 918                                       p2p->after_scan_tx->dst,
 919                                       p2p->after_scan_tx->src,
 920                                       p2p->after_scan_tx->bssid,
 921                                       (u8 *) (p2p->after_scan_tx + 1),
 922                                       p2p->after_scan_tx->len,
 923                                       p2p->after_scan_tx->wait_time);
 924                 os_free(p2p->after_scan_tx);
 925                 p2p->after_scan_tx = NULL;
 926                 return 1;
 927         }
 928
 929         op = p2p->start_after_scan;
 930         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 931         switch (op) {
 932         case P2P_AFTER_SCAN_NOTHING:
 933                 break;
 934         case P2P_AFTER_SCAN_LISTEN:
 935                 p2p_dbg(p2p, "Start previously requested Listen state");
 936                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 937                            p2p->pending_listen_usec / 1000);
 938                 return 1;
 939         case P2P_AFTER_SCAN_CONNECT:
 940                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
 941                         MAC2STR(p2p->after_scan_peer));
 942                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 943                 if (dev == NULL) {
 944                         p2p_dbg(p2p, "Peer not known anymore");
 945                         break;
 946                 }
 947                 p2p_connect_send(p2p, dev);
 948                 return 1;
 949         }
 950
 951         return 0;
 952 }
 953
 954
 955 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 956 {
 957         struct p2p_data *p2p = eloop_ctx;
 958         int running;
 959         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
 960         running = p2p->p2p_scan_running;
 961         /* Make sure we recover from missed scan results callback */
 962         p2p->p2p_scan_running = 0;
 963
 964         if (running)
 965                 p2p_run_after_scan(p2p);
 966 }
 967
 968
 969 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 970 {
 971         p2p->num_req_dev_types = 0;
 972         os_free(p2p->req_dev_types);
 973         p2p->req_dev_types = NULL;
 974 }
 975
 976
 977 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 978              enum p2p_discovery_type type,
 979              unsigned int num_req_dev_types, const u8 *req_dev_types,
 980              const u8 *dev_id, unsigned int search_delay)
 981 {
 982         int res;
 983
 984         p2p_dbg(p2p, "Starting find (type=%d)", type);
 985         os_get_reltime(&p2p->find_start);
 986         if (p2p->p2p_scan_running) {
 987                 p2p_dbg(p2p, "p2p_scan is already running");
 988         }
 989
 990         p2p_free_req_dev_types(p2p);
 991         if (req_dev_types && num_req_dev_types) {
 992                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 993                                                WPS_DEV_TYPE_LEN);
 994                 if (p2p->req_dev_types == NULL)
 995                         return -1;
 996                 os_memcpy(p2p->req_dev_types, req_dev_types,
 997                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 998                 p2p->num_req_dev_types = num_req_dev_types;
 999         }
1000
1001         if (dev_id) {
1002                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1003                 p2p->find_dev_id = p2p->find_dev_id_buf;
1004         } else
1005                 p2p->find_dev_id = NULL;
1006
1007         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1008         p2p_clear_timeout(p2p);
1009         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1010         p2p->find_type = type;
1011         p2p_device_clear_reported(p2p);
1012         p2p_set_state(p2p, P2P_SEARCH);
1013         p2p->search_delay = search_delay;
1014         p2p->in_search_delay = 0;
1015         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1016         p2p->last_p2p_find_timeout = timeout;
1017         if (timeout)
1018                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1019                                        p2p, NULL);
1020         switch (type) {
1021         case P2P_FIND_START_WITH_FULL:
1022         case P2P_FIND_PROGRESSIVE:
1023                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1024                                          p2p->num_req_dev_types,
1025                                          p2p->req_dev_types, dev_id,
1026                                          DEV_PW_DEFAULT);
1027                 break;
1028         case P2P_FIND_ONLY_SOCIAL:
1029                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1030                                          p2p->num_req_dev_types,
1031                                          p2p->req_dev_types, dev_id,
1032                                          DEV_PW_DEFAULT);
1033                 break;
1034         default:
1035                 return -1;
1036         }
1037
1038         if (res == 0) {
1039                 p2p_dbg(p2p, "Running p2p_scan");
1040                 p2p->p2p_scan_running = 1;
1041                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1042                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1043                                        p2p, NULL);
1044         } else if (res == 1) {
1045                 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
1046                 res = 0;
1047                 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1048                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1049         } else {
1050                 p2p_dbg(p2p, "Failed to start p2p_scan");
1051                 p2p_set_state(p2p, P2P_IDLE);
1052                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1053         }
1054
1055         return res;
1056 }
1057
1058
1059 int p2p_other_scan_completed(struct p2p_data *p2p)
1060 {
1061         if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1062                 p2p_set_state(p2p, P2P_SEARCH);
1063                 p2p_search(p2p);
1064                 return 1;
1065         }
1066         if (p2p->state != P2P_SEARCH_WHEN_READY)
1067                 return 0;
1068         p2p_dbg(p2p, "Starting pending P2P find now that previous scan was completed");
1069         if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1070                      p2p->num_req_dev_types, p2p->req_dev_types,
1071                      p2p->find_dev_id, p2p->search_delay) < 0) {
1072                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1073                 return 0;
1074         }
1075         return 1;
1076 }
1077
1078
1079 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1080 {
1081         p2p_dbg(p2p, "Stopping find");
1082         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1083         p2p_clear_timeout(p2p);
1084         if (p2p->state == P2P_SEARCH ||
1085             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1086             p2p->state == P2P_SEARCH_WHEN_READY)
1087                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1088         p2p_set_state(p2p, P2P_IDLE);
1089         p2p_free_req_dev_types(p2p);
1090         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1091         if (p2p->go_neg_peer)
1092                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1093         p2p->go_neg_peer = NULL;
1094         p2p->sd_peer = NULL;
1095         p2p->invite_peer = NULL;
1096         p2p_stop_listen_for_freq(p2p, freq);
1097 }
1098
1099
1100 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1101 {
1102         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1103                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1104                 return;
1105         }
1106         if (p2p->in_listen) {
1107                 p2p->in_listen = 0;
1108                 p2p_clear_timeout(p2p);
1109         }
1110         if (p2p->drv_in_listen) {
1111                 /*
1112                  * The driver may not deliver callback to p2p_listen_end()
1113                  * when the operation gets canceled, so clear the internal
1114                  * variable that is tracking driver state.
1115                  */
1116                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1117                 p2p->drv_in_listen = 0;
1118         }
1119         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1120 }
1121
1122
1123 void p2p_stop_listen(struct p2p_data *p2p)
1124 {
1125         if (p2p->state != P2P_LISTEN_ONLY) {
1126                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1127                 return;
1128         }
1129
1130         p2p_stop_listen_for_freq(p2p, 0);
1131         p2p_set_state(p2p, P2P_IDLE);
1132 }
1133
1134
1135 void p2p_stop_find(struct p2p_data *p2p)
1136 {
1137         p2p_stop_find_for_freq(p2p, 0);
1138 }
1139
1140
1141 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1142                                     unsigned int force_freq,
1143                                     unsigned int pref_freq, int go)
1144 {
1145         u8 op_class, op_channel;
1146         unsigned int freq = force_freq ? force_freq : pref_freq;
1147
1148         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1149                 force_freq, pref_freq, go);
1150         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1151                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1152                 return -1;
1153         }
1154
1155         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1156             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1157                                           op_channel))) {
1158                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1159                         freq, op_class, op_channel);
1160                 return -1;
1161         }
1162
1163         p2p->op_reg_class = op_class;
1164         p2p->op_channel = op_channel;
1165
1166         if (force_freq) {
1167                 p2p->channels.reg_classes = 1;
1168                 p2p->channels.reg_class[0].channels = 1;
1169                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1170                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1171         } else {
1172                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1173                           sizeof(struct p2p_channels));
1174         }
1175
1176         return 0;
1177 }
1178
1179
1180 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1181 {
1182         u8 op_class, op_channel;
1183         const int op_classes_5ghz[] = { 124, 115, 0 };
1184         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1185         const int op_classes_vht[] = { 128, 0 };
1186
1187         p2p_dbg(p2p, "Prepare channel best");
1188
1189         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1190             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1191             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1192             == 0) {
1193                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1194                 p2p->op_reg_class = op_class;
1195                 p2p->op_channel = op_channel;
1196         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1197                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1198                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1199                    == 0) {
1200                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1201                 p2p->op_reg_class = op_class;
1202                 p2p->op_channel = op_channel;
1203         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1204                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1205                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1206                                        &op_channel) == 0) {
1207                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1208                 p2p->op_reg_class = op_class;
1209                 p2p->op_channel = op_channel;
1210         } else if (p2p->cfg->num_pref_chan > 0 &&
1211                    p2p_channels_includes(&p2p->cfg->channels,
1212                                          p2p->cfg->pref_chan[0].op_class,
1213                                          p2p->cfg->pref_chan[0].chan)) {
1214                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1215                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1216                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1217         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1218                                       &p2p->op_reg_class, &p2p->op_channel) ==
1219                    0) {
1220                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1221                         p2p->op_reg_class, p2p->op_channel);
1222         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1223                                       &p2p->op_reg_class, &p2p->op_channel) ==
1224                    0) {
1225                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1226                         p2p->op_reg_class, p2p->op_channel);
1227         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1228                                       &p2p->op_reg_class, &p2p->op_channel) ==
1229                    0) {
1230                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1231                         p2p->op_reg_class, p2p->op_channel);
1232         } else {
1233                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1234                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1235                 p2p->op_channel = p2p->cfg->op_channel;
1236         }
1237
1238         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1239                   sizeof(struct p2p_channels));
1240 }
1241
1242
1243 /**
1244  * p2p_prepare_channel - Select operating channel for GO Negotiation
1245  * @p2p: P2P module context from p2p_init()
1246  * @dev: Selected peer device
1247  * @force_freq: Forced frequency in MHz or 0 if not forced
1248  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1249  * @go: Whether the local end will be forced to be GO
1250  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1251  *
1252  * This function is used to do initial operating channel selection for GO
1253  * Negotiation prior to having received peer information. The selected channel
1254  * may be further optimized in p2p_reselect_channel() once the peer information
1255  * is available.
1256  */
1257 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1258                         unsigned int force_freq, unsigned int pref_freq, int go)
1259 {
1260         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1261                 force_freq, pref_freq, go);
1262         if (force_freq || pref_freq) {
1263                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1264                     0)
1265                         return -1;
1266         } else {
1267                 p2p_prepare_channel_best(p2p);
1268         }
1269         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1270         if (go)
1271                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1272         else if (!force_freq)
1273                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1274                                    &p2p->channels);
1275         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1276
1277         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1278                 p2p->op_reg_class, p2p->op_channel,
1279                 force_freq ? " (forced)" : "");
1280
1281         if (force_freq)
1282                 dev->flags |= P2P_DEV_FORCE_FREQ;
1283         else
1284                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1285
1286         return 0;
1287 }
1288
1289
1290 static void p2p_set_dev_persistent(struct p2p_device *dev,
1291                                    int persistent_group)
1292 {
1293         switch (persistent_group) {
1294         case 0:
1295                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1296                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1297                 break;
1298         case 1:
1299                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1300                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1301                 break;
1302         case 2:
1303                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1304                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1305                 break;
1306         }
1307 }
1308
1309
1310 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1311                 enum p2p_wps_method wps_method,
1312                 int go_intent, const u8 *own_interface_addr,
1313                 unsigned int force_freq, int persistent_group,
1314                 const u8 *force_ssid, size_t force_ssid_len,
1315                 int pd_before_go_neg, unsigned int pref_freq)
1316 {
1317         struct p2p_device *dev;
1318
1319         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1320                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1321                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1322                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1323                 wps_method, persistent_group, pd_before_go_neg);
1324
1325         dev = p2p_get_device(p2p, peer_addr);
1326         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1327                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1328                         MAC2STR(peer_addr));
1329                 return -1;
1330         }
1331
1332         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1333                                 go_intent == 15) < 0)
1334                 return -1;
1335
1336         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1337                 if (!(dev->info.dev_capab &
1338                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1339                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1340                                 " that is in a group and is not discoverable",
1341                                 MAC2STR(peer_addr));
1342                         return -1;
1343                 }
1344                 if (dev->oper_freq <= 0) {
1345                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1346                                 " with incomplete information",
1347                                 MAC2STR(peer_addr));
1348                         return -1;
1349                 }
1350
1351                 /*
1352                  * First, try to connect directly. If the peer does not
1353                  * acknowledge frames, assume it is sleeping and use device
1354                  * discoverability via the GO at that point.
1355                  */
1356         }
1357
1358         p2p->ssid_set = 0;
1359         if (force_ssid) {
1360                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1361                                   force_ssid, force_ssid_len);
1362                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1363                 p2p->ssid_len = force_ssid_len;
1364                 p2p->ssid_set = 1;
1365         }
1366
1367         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1368         dev->flags &= ~P2P_DEV_USER_REJECTED;
1369         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1370         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1371         if (pd_before_go_neg)
1372                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1373         else {
1374                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1375                 /*
1376                  * Assign dialog token and tie breaker here to use the same
1377                  * values in each retry within the same GO Negotiation exchange.
1378                  */
1379                 dev->dialog_token++;
1380                 if (dev->dialog_token == 0)
1381                         dev->dialog_token = 1;
1382                 dev->tie_breaker = p2p->next_tie_breaker;
1383                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1384         }
1385         dev->connect_reqs = 0;
1386         dev->go_neg_req_sent = 0;
1387         dev->go_state = UNKNOWN_GO;
1388         p2p_set_dev_persistent(dev, persistent_group);
1389         p2p->go_intent = go_intent;
1390         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1391
1392         if (p2p->state != P2P_IDLE)
1393                 p2p_stop_find(p2p);
1394
1395         if (p2p->after_scan_tx) {
1396                 /*
1397                  * We need to drop the pending frame to avoid issues with the
1398                  * new GO Negotiation, e.g., when the pending frame was from a
1399                  * previous attempt at starting a GO Negotiation.
1400                  */
1401                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1402                 os_free(p2p->after_scan_tx);
1403                 p2p->after_scan_tx = NULL;
1404         }
1405
1406         dev->wps_method = wps_method;
1407         dev->status = P2P_SC_SUCCESS;
1408
1409         if (p2p->p2p_scan_running) {
1410                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1411                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1412                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1413                 return 0;
1414         }
1415         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1416
1417         return p2p_connect_send(p2p, dev);
1418 }
1419
1420
1421 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1422                   enum p2p_wps_method wps_method,
1423                   int go_intent, const u8 *own_interface_addr,
1424                   unsigned int force_freq, int persistent_group,
1425                   const u8 *force_ssid, size_t force_ssid_len,
1426                   unsigned int pref_freq)
1427 {
1428         struct p2p_device *dev;
1429
1430         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1431                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1432                 " wps_method=%d  persistent_group=%d",
1433                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1434                 wps_method, persistent_group);
1435
1436         dev = p2p_get_device(p2p, peer_addr);
1437         if (dev == NULL) {
1438                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1439                         MAC2STR(peer_addr));
1440                 return -1;
1441         }
1442
1443         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1444                                 15) < 0)
1445                 return -1;
1446
1447         p2p->ssid_set = 0;
1448         if (force_ssid) {
1449                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1450                                   force_ssid, force_ssid_len);
1451                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1452                 p2p->ssid_len = force_ssid_len;
1453                 p2p->ssid_set = 1;
1454         }
1455
1456         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1457         dev->flags &= ~P2P_DEV_USER_REJECTED;
1458         dev->go_neg_req_sent = 0;
1459         dev->go_state = UNKNOWN_GO;
1460         p2p_set_dev_persistent(dev, persistent_group);
1461         p2p->go_intent = go_intent;
1462         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1463
1464         dev->wps_method = wps_method;
1465         dev->status = P2P_SC_SUCCESS;
1466
1467         return 0;
1468 }
1469
1470
1471 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1472                       struct p2p_device *dev, struct p2p_message *msg)
1473 {
1474         os_get_reltime(&dev->last_seen);
1475
1476         p2p_copy_wps_info(p2p, dev, 0, msg);
1477
1478         if (msg->listen_channel) {
1479                 int freq;
1480                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1481                                            msg->listen_channel[4]);
1482                 if (freq < 0) {
1483                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1484                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1485                                 msg->listen_channel[0],
1486                                 msg->listen_channel[1],
1487                                 msg->listen_channel[2],
1488                                 msg->listen_channel[3],
1489                                 msg->listen_channel[4]);
1490                 } else {
1491                         p2p_dbg(p2p, "Update peer " MACSTR
1492                                 " Listen channel: %u -> %u MHz",
1493                                 MAC2STR(dev->info.p2p_device_addr),
1494                                 dev->listen_freq, freq);
1495                         dev->listen_freq = freq;
1496                 }
1497         }
1498
1499         if (msg->wfd_subelems) {
1500                 wpabuf_free(dev->info.wfd_subelems);
1501                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1502         }
1503
1504         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1505                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1506                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1507         } else {
1508                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1509                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1510                         "listen_freq=%d",
1511                         MAC2STR(dev->info.p2p_device_addr),
1512                         dev->info.dev_capab, dev->info.group_capab,
1513                         dev->info.device_name, dev->listen_freq);
1514         }
1515
1516         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1517
1518         if (dev->flags & P2P_DEV_USER_REJECTED) {
1519                 p2p_dbg(p2p, "Do not report rejected device");
1520                 return;
1521         }
1522
1523         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1524                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1525         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1526 }
1527
1528
1529 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1530 {
1531         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1532         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1533         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1534                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1535         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1536 }
1537
1538
1539 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1540 {
1541         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1542         p2p_random(params->passphrase, 8);
1543         return 0;
1544 }
1545
1546
1547 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1548 {
1549         struct p2p_go_neg_results res;
1550         int go = peer->go_state == LOCAL_GO;
1551         struct p2p_channels intersection;
1552         int freqs;
1553         size_t i, j;
1554
1555         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1556                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1557
1558         os_memset(&res, 0, sizeof(res));
1559         res.role_go = go;
1560         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1561         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1562         res.wps_method = peer->wps_method;
1563         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1564                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1565                         res.persistent_group = 2;
1566                 else
1567                         res.persistent_group = 1;
1568         }
1569
1570         if (go) {
1571                 /* Setup AP mode for WPS provisioning */
1572                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1573                                                p2p->op_channel);
1574                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1575                 res.ssid_len = p2p->ssid_len;
1576                 p2p_random(res.passphrase, 8);
1577         } else {
1578                 res.freq = peer->oper_freq;
1579                 if (p2p->ssid_len) {
1580                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1581                         res.ssid_len = p2p->ssid_len;
1582                 }
1583         }
1584
1585         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1586         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1587         p2p_channels_intersect(&p2p->channels, &peer->channels,
1588                                &intersection);
1589         if (go) {
1590                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1591                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1592                                   &intersection);
1593         }
1594         freqs = 0;
1595         for (i = 0; i < intersection.reg_classes; i++) {
1596                 struct p2p_reg_class *c = &intersection.reg_class[i];
1597                 if (freqs + 1 == P2P_MAX_CHANNELS)
1598                         break;
1599                 for (j = 0; j < c->channels; j++) {
1600                         int freq;
1601                         if (freqs + 1 == P2P_MAX_CHANNELS)
1602                                 break;
1603                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1604                         if (freq < 0)
1605                                 continue;
1606                         res.freq_list[freqs++] = freq;
1607                 }
1608         }
1609
1610         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1611
1612         p2p_clear_timeout(p2p);
1613         p2p->ssid_set = 0;
1614         peer->go_neg_req_sent = 0;
1615         peer->wps_method = WPS_NOT_READY;
1616
1617         p2p_set_state(p2p, P2P_PROVISIONING);
1618         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1619 }
1620
1621
1622 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1623                               const u8 *data, size_t len, int rx_freq)
1624 {
1625         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1626         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1627
1628         if (len < 1)
1629                 return;
1630
1631         switch (data[0]) {
1632         case P2P_GO_NEG_REQ:
1633                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1634                 break;
1635         case P2P_GO_NEG_RESP:
1636                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1637                 break;
1638         case P2P_GO_NEG_CONF:
1639                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1640                 break;
1641         case P2P_INVITATION_REQ:
1642                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1643                                            rx_freq);
1644                 break;
1645         case P2P_INVITATION_RESP:
1646                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1647                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1648                 break;
1649         case P2P_PROV_DISC_REQ:
1650                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1651                 break;
1652         case P2P_PROV_DISC_RESP:
1653                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1654                 break;
1655         case P2P_DEV_DISC_REQ:
1656                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1657                 break;
1658         case P2P_DEV_DISC_RESP:
1659                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1660                 break;
1661         default:
1662                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1663                         data[0]);
1664                 break;
1665         }
1666 }
1667
1668
1669 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1670                                  const u8 *sa, const u8 *bssid, const u8 *data,
1671                                  size_t len, int freq)
1672 {
1673         if (len < 1)
1674                 return;
1675
1676         switch (data[0]) {
1677         case WLAN_PA_VENDOR_SPECIFIC:
1678                 data++;
1679                 len--;
1680                 if (len < 3)
1681                         return;
1682                 if (WPA_GET_BE24(data) != OUI_WFA)
1683                         return;
1684
1685                 data += 3;
1686                 len -= 3;
1687                 if (len < 1)
1688                         return;
1689
1690                 if (*data != P2P_OUI_TYPE)
1691                         return;
1692
1693                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1694                 break;
1695         case WLAN_PA_GAS_INITIAL_REQ:
1696                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1697                 break;
1698         case WLAN_PA_GAS_INITIAL_RESP:
1699                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1700                 break;
1701         case WLAN_PA_GAS_COMEBACK_REQ:
1702                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1703                 break;
1704         case WLAN_PA_GAS_COMEBACK_RESP:
1705                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1706                 break;
1707         }
1708 }
1709
1710
1711 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1712                    const u8 *bssid, u8 category,
1713                    const u8 *data, size_t len, int freq)
1714 {
1715         if (category == WLAN_ACTION_PUBLIC) {
1716                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1717                 return;
1718         }
1719
1720         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1721                 return;
1722
1723         if (len < 4)
1724                 return;
1725
1726         if (WPA_GET_BE24(data) != OUI_WFA)
1727                 return;
1728         data += 3;
1729         len -= 3;
1730
1731         if (*data != P2P_OUI_TYPE)
1732                 return;
1733         data++;
1734         len--;
1735
1736         /* P2P action frame */
1737         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1738         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1739
1740         if (len < 1)
1741                 return;
1742         switch (data[0]) {
1743         case P2P_NOA:
1744                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1745                 /* TODO */
1746                 break;
1747         case P2P_PRESENCE_REQ:
1748                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1749                 break;
1750         case P2P_PRESENCE_RESP:
1751                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1752                 break;
1753         case P2P_GO_DISC_REQ:
1754                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1755                 break;
1756         default:
1757                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1758                 break;
1759         }
1760 }
1761
1762
1763 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1764 {
1765         struct p2p_data *p2p = eloop_ctx;
1766         if (p2p->go_neg_peer == NULL)
1767                 return;
1768         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1769         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1770         p2p_connect_send(p2p, p2p->go_neg_peer);
1771 }
1772
1773
1774 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1775 {
1776         struct p2p_data *p2p = eloop_ctx;
1777         if (p2p->invite_peer == NULL)
1778                 return;
1779         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1780         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1781 }
1782
1783
1784 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1785                                        const u8 *ie, size_t ie_len)
1786 {
1787         struct p2p_message msg;
1788         struct p2p_device *dev;
1789
1790         os_memset(&msg, 0, sizeof(msg));
1791         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1792         {
1793                 p2p_parse_free(&msg);
1794                 return; /* not a P2P probe */
1795         }
1796
1797         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1798             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1799             != 0) {
1800                 /* The Probe Request is not part of P2P Device Discovery. It is
1801                  * not known whether the source address of the frame is the P2P
1802                  * Device Address or P2P Interface Address. Do not add a new
1803                  * peer entry based on this frames.
1804                  */
1805                 p2p_parse_free(&msg);
1806                 return;
1807         }
1808
1809         dev = p2p_get_device(p2p, addr);
1810         if (dev) {
1811                 if (dev->country[0] == 0 && msg.listen_channel)
1812                         os_memcpy(dev->country, msg.listen_channel, 3);
1813                 os_get_reltime(&dev->last_seen);
1814                 p2p_parse_free(&msg);
1815                 return; /* already known */
1816         }
1817
1818         dev = p2p_create_device(p2p, addr);
1819         if (dev == NULL) {
1820                 p2p_parse_free(&msg);
1821                 return;
1822         }
1823
1824         os_get_reltime(&dev->last_seen);
1825         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1826
1827         if (msg.listen_channel) {
1828                 os_memcpy(dev->country, msg.listen_channel, 3);
1829                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1830                                                        msg.listen_channel[4]);
1831         }
1832
1833         p2p_copy_wps_info(p2p, dev, 1, &msg);
1834
1835         if (msg.wfd_subelems) {
1836                 wpabuf_free(dev->info.wfd_subelems);
1837                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1838         }
1839
1840         p2p_parse_free(&msg);
1841
1842         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1843                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1844                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1845                 dev->info.group_capab, dev->info.device_name,
1846                 dev->listen_freq);
1847 }
1848
1849
1850 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1851                                                 const u8 *addr,
1852                                                 struct p2p_message *msg)
1853 {
1854         struct p2p_device *dev;
1855
1856         dev = p2p_get_device(p2p, addr);
1857         if (dev) {
1858                 os_get_reltime(&dev->last_seen);
1859                 return dev; /* already known */
1860         }
1861
1862         dev = p2p_create_device(p2p, addr);
1863         if (dev == NULL)
1864                 return NULL;
1865
1866         p2p_add_dev_info(p2p, addr, dev, msg);
1867
1868         return dev;
1869 }
1870
1871
1872 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1873 {
1874         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1875                 return 1;
1876         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1877             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1878             WPA_GET_BE16(&req_dev_type[6]) == 0)
1879                 return 1; /* Category match with wildcard OUI/sub-category */
1880         return 0;
1881 }
1882
1883
1884 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1885                         size_t num_req_dev_type)
1886 {
1887         size_t i;
1888         for (i = 0; i < num_req_dev_type; i++) {
1889                 if (dev_type_match(dev_type, req_dev_type[i]))
1890                         return 1;
1891         }
1892         return 0;
1893 }
1894
1895
1896 /**
1897  * p2p_match_dev_type - Match local device type with requested type
1898  * @p2p: P2P module context from p2p_init()
1899  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1900  * Returns: 1 on match, 0 on mismatch
1901  *
1902  * This function can be used to match the Requested Device Type attribute in
1903  * WPS IE with the local device types for deciding whether to reply to a Probe
1904  * Request frame.
1905  */
1906 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1907 {
1908         struct wps_parse_attr attr;
1909         size_t i;
1910
1911         if (wps_parse_msg(wps, &attr))
1912                 return 1; /* assume no Requested Device Type attributes */
1913
1914         if (attr.num_req_dev_type == 0)
1915                 return 1; /* no Requested Device Type attributes -> match */
1916
1917         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1918                                 attr.num_req_dev_type))
1919                 return 1; /* Own Primary Device Type matches */
1920
1921         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1922                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1923                                         attr.req_dev_type,
1924                                         attr.num_req_dev_type))
1925                 return 1; /* Own Secondary Device Type matches */
1926
1927         /* No matching device type found */
1928         return 0;
1929 }
1930
1931
1932 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1933 {
1934         struct wpabuf *buf;
1935         u8 *len;
1936         int pw_id = -1;
1937         size_t extra = 0;
1938
1939 #ifdef CONFIG_WIFI_DISPLAY
1940         if (p2p->wfd_ie_probe_resp)
1941                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1942 #endif /* CONFIG_WIFI_DISPLAY */
1943
1944         buf = wpabuf_alloc(1000 + extra);
1945         if (buf == NULL)
1946                 return NULL;
1947
1948         if (p2p->go_neg_peer) {
1949                 /* Advertise immediate availability of WPS credential */
1950                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1951         }
1952
1953         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1954                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1955                 wpabuf_free(buf);
1956                 return NULL;
1957         }
1958
1959 #ifdef CONFIG_WIFI_DISPLAY
1960         if (p2p->wfd_ie_probe_resp)
1961                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1962 #endif /* CONFIG_WIFI_DISPLAY */
1963
1964         /* P2P IE */
1965         len = p2p_buf_add_ie_hdr(buf);
1966         p2p_buf_add_capability(buf, p2p->dev_capab &
1967                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1968         if (p2p->ext_listen_interval)
1969                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1970                                               p2p->ext_listen_interval);
1971         p2p_buf_add_device_info(buf, p2p, NULL);
1972         p2p_buf_update_ie_hdr(buf, len);
1973
1974         return buf;
1975 }
1976
1977
1978 static enum p2p_probe_req_status
1979 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1980                 const u8 *bssid, const u8 *ie, size_t ie_len)
1981 {
1982         struct ieee802_11_elems elems;
1983         struct wpabuf *buf;
1984         struct ieee80211_mgmt *resp;
1985         struct p2p_message msg;
1986         struct wpabuf *ies;
1987
1988         if (!p2p->in_listen || !p2p->drv_in_listen) {
1989                 /* not in Listen state - ignore Probe Request */
1990                 return P2P_PREQ_NOT_LISTEN;
1991         }
1992
1993         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1994             ParseFailed) {
1995                 /* Ignore invalid Probe Request frames */
1996                 return P2P_PREQ_MALFORMED;
1997         }
1998
1999         if (elems.p2p == NULL) {
2000                 /* not a P2P probe - ignore it */
2001                 return P2P_PREQ_NOT_P2P;
2002         }
2003
2004         if (dst && !is_broadcast_ether_addr(dst) &&
2005             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2006                 /* Not sent to the broadcast address or our P2P Device Address
2007                  */
2008                 return P2P_PREQ_NOT_PROCESSED;
2009         }
2010
2011         if (bssid && !is_broadcast_ether_addr(bssid)) {
2012                 /* Not sent to the Wildcard BSSID */
2013                 return P2P_PREQ_NOT_PROCESSED;
2014         }
2015
2016         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2017             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2018             0) {
2019                 /* not using P2P Wildcard SSID - ignore */
2020                 return P2P_PREQ_NOT_PROCESSED;
2021         }
2022
2023         if (supp_rates_11b_only(&elems)) {
2024                 /* Indicates support for 11b rates only */
2025                 return P2P_PREQ_NOT_P2P;
2026         }
2027
2028         os_memset(&msg, 0, sizeof(msg));
2029         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2030                 /* Could not parse P2P attributes */
2031                 return P2P_PREQ_NOT_P2P;
2032         }
2033
2034         if (msg.device_id &&
2035             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2036                 /* Device ID did not match */
2037                 p2p_parse_free(&msg);
2038                 return P2P_PREQ_NOT_PROCESSED;
2039         }
2040
2041         /* Check Requested Device Type match */
2042         if (msg.wps_attributes &&
2043             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2044                 /* No match with Requested Device Type */
2045                 p2p_parse_free(&msg);
2046                 return P2P_PREQ_NOT_PROCESSED;
2047         }
2048         p2p_parse_free(&msg);
2049
2050         if (!p2p->cfg->send_probe_resp) {
2051                 /* Response generated elsewhere */
2052                 return P2P_PREQ_NOT_PROCESSED;
2053         }
2054
2055         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2056
2057         /*
2058          * We do not really have a specific BSS that this frame is advertising,
2059          * so build a frame that has some information in valid format. This is
2060          * really only used for discovery purposes, not to learn exact BSS
2061          * parameters.
2062          */
2063         ies = p2p_build_probe_resp_ies(p2p);
2064         if (ies == NULL)
2065                 return P2P_PREQ_NOT_PROCESSED;
2066
2067         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2068         if (buf == NULL) {
2069                 wpabuf_free(ies);
2070                 return P2P_PREQ_NOT_PROCESSED;
2071         }
2072
2073         resp = NULL;
2074         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2075
2076         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2077                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2078         os_memcpy(resp->da, addr, ETH_ALEN);
2079         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2080         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2081         resp->u.probe_resp.beacon_int = host_to_le16(100);
2082         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2083         resp->u.probe_resp.capab_info =
2084                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2085                              WLAN_CAPABILITY_PRIVACY |
2086                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2087
2088         wpabuf_put_u8(buf, WLAN_EID_SSID);
2089         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2090         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2091
2092         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2093         wpabuf_put_u8(buf, 8);
2094         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2095         wpabuf_put_u8(buf, 90 / 5);
2096         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2097         wpabuf_put_u8(buf, 180 / 5);
2098         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2099         wpabuf_put_u8(buf, 360 / 5);
2100         wpabuf_put_u8(buf, 480 / 5);
2101         wpabuf_put_u8(buf, 540 / 5);
2102
2103         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2104         wpabuf_put_u8(buf, 1);
2105         wpabuf_put_u8(buf, p2p->cfg->channel);
2106
2107         wpabuf_put_buf(buf, ies);
2108         wpabuf_free(ies);
2109
2110         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2111
2112         wpabuf_free(buf);
2113
2114         return P2P_PREQ_NOT_PROCESSED;
2115 }
2116
2117
2118 enum p2p_probe_req_status
2119 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2120                  const u8 *bssid, const u8 *ie, size_t ie_len)
2121 {
2122         enum p2p_probe_req_status res;
2123
2124         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2125
2126         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2127
2128         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2129             p2p->go_neg_peer &&
2130             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2131             == 0 &&
2132             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2133                 /* Received a Probe Request from GO Negotiation peer */
2134                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2135                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2136                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2137                 return P2P_PREQ_PROCESSED;
2138         }
2139
2140         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2141             p2p->invite_peer &&
2142             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2143             == 0) {
2144                 /* Received a Probe Request from Invite peer */
2145                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2146                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2147                 return P2P_PREQ_PROCESSED;
2148         }
2149
2150         return res;
2151 }
2152
2153
2154 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2155                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2156 {
2157         struct wpabuf *tmp;
2158         u8 *lpos;
2159         size_t tmplen;
2160         int res;
2161         u8 group_capab;
2162
2163         if (p2p_ie == NULL)
2164                 return 0; /* WLAN AP is not a P2P manager */
2165
2166         /*
2167          * (Re)Association Request - P2P IE
2168          * P2P Capability attribute (shall be present)
2169          * P2P Interface attribute (present if concurrent device and
2170          *      P2P Management is enabled)
2171          */
2172         tmp = wpabuf_alloc(200);
2173         if (tmp == NULL)
2174                 return -1;
2175
2176         lpos = p2p_buf_add_ie_hdr(tmp);
2177         group_capab = 0;
2178         if (p2p->num_groups > 0) {
2179                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2180                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2181                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2182                     p2p->cross_connect)
2183                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2184         }
2185         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2186         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2187             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2188                 p2p_buf_add_p2p_interface(tmp, p2p);
2189         p2p_buf_update_ie_hdr(tmp, lpos);
2190
2191         tmplen = wpabuf_len(tmp);
2192         if (tmplen > len)
2193                 res = -1;
2194         else {
2195                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2196                 res = tmplen;
2197         }
2198         wpabuf_free(tmp);
2199
2200         return res;
2201 }
2202
2203
2204 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2205                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2206 {
2207         struct wpabuf *tmp;
2208         u8 *lpos;
2209         struct p2p_device *peer;
2210         size_t tmplen;
2211         int res;
2212         size_t extra = 0;
2213
2214         if (!p2p_group)
2215                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2216
2217 #ifdef CONFIG_WIFI_DISPLAY
2218         if (p2p->wfd_ie_assoc_req)
2219                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2220 #endif /* CONFIG_WIFI_DISPLAY */
2221
2222         /*
2223          * (Re)Association Request - P2P IE
2224          * P2P Capability attribute (shall be present)
2225          * Extended Listen Timing (may be present)
2226          * P2P Device Info attribute (shall be present)
2227          */
2228         tmp = wpabuf_alloc(200 + extra);
2229         if (tmp == NULL)
2230                 return -1;
2231
2232 #ifdef CONFIG_WIFI_DISPLAY
2233         if (p2p->wfd_ie_assoc_req)
2234                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2235 #endif /* CONFIG_WIFI_DISPLAY */
2236
2237         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2238
2239         lpos = p2p_buf_add_ie_hdr(tmp);
2240         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2241         if (p2p->ext_listen_interval)
2242                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2243                                               p2p->ext_listen_interval);
2244         p2p_buf_add_device_info(tmp, p2p, peer);
2245         p2p_buf_update_ie_hdr(tmp, lpos);
2246
2247         tmplen = wpabuf_len(tmp);
2248         if (tmplen > len)
2249                 res = -1;
2250         else {
2251                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2252                 res = tmplen;
2253         }
2254         wpabuf_free(tmp);
2255
2256         return res;
2257 }
2258
2259
2260 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2261 {
2262         struct wpabuf *p2p_ie;
2263         int ret;
2264
2265         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2266         if (p2p_ie == NULL)
2267                 return 0;
2268
2269         ret = p2p_attr_text(p2p_ie, buf, end);
2270         wpabuf_free(p2p_ie);
2271         return ret;
2272 }
2273
2274
2275 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2276 {
2277         struct p2p_message msg;
2278
2279         os_memset(&msg, 0, sizeof(msg));
2280         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2281                 return -1;
2282
2283         if (msg.p2p_device_addr) {
2284                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2285                 return 0;
2286         } else if (msg.device_id) {
2287                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2288                 return 0;
2289         }
2290         return -1;
2291 }
2292
2293
2294 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2295 {
2296         struct wpabuf *p2p_ie;
2297         int ret;
2298
2299         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2300                                              P2P_IE_VENDOR_TYPE);
2301         if (p2p_ie == NULL)
2302                 return -1;
2303         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2304         wpabuf_free(p2p_ie);
2305         return ret;
2306 }
2307
2308
2309 static void p2p_clear_go_neg(struct p2p_data *p2p)
2310 {
2311         p2p->go_neg_peer = NULL;
2312         p2p_clear_timeout(p2p);
2313         p2p_set_state(p2p, P2P_IDLE);
2314 }
2315
2316
2317 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2318 {
2319         if (p2p->go_neg_peer == NULL) {
2320                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2321                 return; /* No pending Group Formation */
2322         }
2323
2324         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2325             0) {
2326                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2327                         MACSTR " (GO Negotiation peer " MACSTR ")",
2328                         MAC2STR(mac_addr),
2329                         MAC2STR(p2p->go_neg_peer->intended_addr));
2330                 return; /* Ignore unexpected peer address */
2331         }
2332
2333         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2334                 MAC2STR(mac_addr));
2335
2336         p2p_clear_go_neg(p2p);
2337 }
2338
2339
2340 void p2p_group_formation_failed(struct p2p_data *p2p)
2341 {
2342         if (p2p->go_neg_peer == NULL) {
2343                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2344                 return; /* No pending Group Formation */
2345         }
2346
2347         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2348                 MAC2STR(p2p->go_neg_peer->intended_addr));
2349
2350         p2p_clear_go_neg(p2p);
2351 }
2352
2353
2354 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2355 {
2356         struct p2p_data *p2p;
2357
2358         if (cfg->max_peers < 1)
2359                 return NULL;
2360
2361         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2362         if (p2p == NULL)
2363                 return NULL;
2364         p2p->cfg = (struct p2p_config *) (p2p + 1);
2365         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2366         if (cfg->dev_name)
2367                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2368         if (cfg->manufacturer)
2369                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2370         if (cfg->model_name)
2371                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2372         if (cfg->model_number)
2373                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2374         if (cfg->serial_number)
2375                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2376         if (cfg->pref_chan) {
2377                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2378                                                 sizeof(struct p2p_channel));
2379                 if (p2p->cfg->pref_chan) {
2380                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2381                                   cfg->num_pref_chan *
2382                                   sizeof(struct p2p_channel));
2383                 } else
2384                         p2p->cfg->num_pref_chan = 0;
2385         }
2386
2387         p2p->min_disc_int = 1;
2388         p2p->max_disc_int = 3;
2389         p2p->max_disc_tu = -1;
2390
2391         os_get_random(&p2p->next_tie_breaker, 1);
2392         p2p->next_tie_breaker &= 0x01;
2393         if (cfg->sd_request)
2394                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2395         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2396         if (cfg->concurrent_operations)
2397                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2398         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2399
2400         dl_list_init(&p2p->devices);
2401
2402         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2403                                p2p_expiration_timeout, p2p, NULL);
2404
2405         p2p->go_timeout = 100;
2406         p2p->client_timeout = 20;
2407
2408         p2p_dbg(p2p, "initialized");
2409         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2410         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2411
2412         return p2p;
2413 }
2414
2415
2416 void p2p_deinit(struct p2p_data *p2p)
2417 {
2418 #ifdef CONFIG_WIFI_DISPLAY
2419         wpabuf_free(p2p->wfd_ie_beacon);
2420         wpabuf_free(p2p->wfd_ie_probe_req);
2421         wpabuf_free(p2p->wfd_ie_probe_resp);
2422         wpabuf_free(p2p->wfd_ie_assoc_req);
2423         wpabuf_free(p2p->wfd_ie_invitation);
2424         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2425         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2426         wpabuf_free(p2p->wfd_ie_go_neg);
2427         wpabuf_free(p2p->wfd_dev_info);
2428         wpabuf_free(p2p->wfd_assoc_bssid);
2429         wpabuf_free(p2p->wfd_coupled_sink_info);
2430 #endif /* CONFIG_WIFI_DISPLAY */
2431
2432         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2433         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2434         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2435         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2436         p2p_flush(p2p);
2437         p2p_free_req_dev_types(p2p);
2438         os_free(p2p->cfg->dev_name);
2439         os_free(p2p->cfg->manufacturer);
2440         os_free(p2p->cfg->model_name);
2441         os_free(p2p->cfg->model_number);
2442         os_free(p2p->cfg->serial_number);
2443         os_free(p2p->cfg->pref_chan);
2444         os_free(p2p->groups);
2445         wpabuf_free(p2p->sd_resp);
2446         os_free(p2p->after_scan_tx);
2447         p2p_remove_wps_vendor_extensions(p2p);
2448         os_free(p2p->no_go_freq.range);
2449         os_free(p2p);
2450 }
2451
2452
2453 void p2p_flush(struct p2p_data *p2p)
2454 {
2455         struct p2p_device *dev, *prev;
2456         p2p_stop_find(p2p);
2457         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2458                               list) {
2459                 dl_list_del(&dev->list);
2460                 p2p_device_free(p2p, dev);
2461         }
2462         p2p_free_sd_queries(p2p);
2463         os_free(p2p->after_scan_tx);
2464         p2p->after_scan_tx = NULL;
2465 }
2466
2467
2468 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2469 {
2470         struct p2p_device *dev;
2471
2472         dev = p2p_get_device(p2p, addr);
2473         if (dev == NULL)
2474                 return -1;
2475
2476         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2477
2478         if (p2p->go_neg_peer == dev)
2479                 p2p->go_neg_peer = NULL;
2480
2481         dev->wps_method = WPS_NOT_READY;
2482         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2483         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2484
2485         /* Check if after_scan_tx is for this peer. If so free it */
2486         if (p2p->after_scan_tx &&
2487             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2488                 os_free(p2p->after_scan_tx);
2489                 p2p->after_scan_tx = NULL;
2490         }
2491
2492         return 0;
2493 }
2494
2495
2496 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2497 {
2498         os_free(p2p->cfg->dev_name);
2499         if (dev_name) {
2500                 p2p->cfg->dev_name = os_strdup(dev_name);
2501                 if (p2p->cfg->dev_name == NULL)
2502                         return -1;
2503         } else
2504                 p2p->cfg->dev_name = NULL;
2505         return 0;
2506 }
2507
2508
2509 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2510 {
2511         os_free(p2p->cfg->manufacturer);
2512         p2p->cfg->manufacturer = NULL;
2513         if (manufacturer) {
2514                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2515                 if (p2p->cfg->manufacturer == NULL)
2516                         return -1;
2517         }
2518
2519         return 0;
2520 }
2521
2522
2523 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2524 {
2525         os_free(p2p->cfg->model_name);
2526         p2p->cfg->model_name = NULL;
2527         if (model_name) {
2528                 p2p->cfg->model_name = os_strdup(model_name);
2529                 if (p2p->cfg->model_name == NULL)
2530                         return -1;
2531         }
2532
2533         return 0;
2534 }
2535
2536
2537 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2538 {
2539         os_free(p2p->cfg->model_number);
2540         p2p->cfg->model_number = NULL;
2541         if (model_number) {
2542                 p2p->cfg->model_number = os_strdup(model_number);
2543                 if (p2p->cfg->model_number == NULL)
2544                         return -1;
2545         }
2546
2547         return 0;
2548 }
2549
2550
2551 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2552 {
2553         os_free(p2p->cfg->serial_number);
2554         p2p->cfg->serial_number = NULL;
2555         if (serial_number) {
2556                 p2p->cfg->serial_number = os_strdup(serial_number);
2557                 if (p2p->cfg->serial_number == NULL)
2558                         return -1;
2559         }
2560
2561         return 0;
2562 }
2563
2564
2565 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2566 {
2567         p2p->cfg->config_methods = config_methods;
2568 }
2569
2570
2571 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2572 {
2573         os_memcpy(p2p->cfg->uuid, uuid, 16);
2574 }
2575
2576
2577 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2578 {
2579         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2580         return 0;
2581 }
2582
2583
2584 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2585                           size_t num_dev_types)
2586 {
2587         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2588                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2589         p2p->cfg->num_sec_dev_types = num_dev_types;
2590         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2591         return 0;
2592 }
2593
2594
2595 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2596 {
2597         int i;
2598
2599         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2600                 wpabuf_free(p2p->wps_vendor_ext[i]);
2601                 p2p->wps_vendor_ext[i] = NULL;
2602         }
2603 }
2604
2605
2606 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2607                                  const struct wpabuf *vendor_ext)
2608 {
2609         int i;
2610
2611         if (vendor_ext == NULL)
2612                 return -1;
2613
2614         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2615                 if (p2p->wps_vendor_ext[i] == NULL)
2616                         break;
2617         }
2618         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2619                 return -1;
2620
2621         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2622         if (p2p->wps_vendor_ext[i] == NULL)
2623                 return -1;
2624
2625         return 0;
2626 }
2627
2628
2629 int p2p_set_country(struct p2p_data *p2p, const char *country)
2630 {
2631         os_memcpy(p2p->cfg->country, country, 3);
2632         return 0;
2633 }
2634
2635
2636 void p2p_continue_find(struct p2p_data *p2p)
2637 {
2638         struct p2p_device *dev;
2639         p2p_set_state(p2p, P2P_SEARCH);
2640         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2641                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2642                         if (p2p_start_sd(p2p, dev) == 0)
2643                                 return;
2644                         else
2645                                 break;
2646                 } else if (dev->req_config_methods &&
2647                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2648                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2649                                 MACSTR " (config methods 0x%x)",
2650                                 MAC2STR(dev->info.p2p_device_addr),
2651                                 dev->req_config_methods);
2652                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2653                                 return;
2654                 }
2655         }
2656
2657         p2p_listen_in_find(p2p, 1);
2658 }
2659
2660
2661 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2662 {
2663         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2664                 success);
2665         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2666
2667         if (!success) {
2668                 if (p2p->sd_peer) {
2669                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2670                         p2p->sd_peer = NULL;
2671                 }
2672                 p2p_continue_find(p2p);
2673                 return;
2674         }
2675
2676         if (p2p->sd_peer == NULL) {
2677                 p2p_dbg(p2p, "No SD peer entry known");
2678                 p2p_continue_find(p2p);
2679                 return;
2680         }
2681
2682         /* Wait for response from the peer */
2683         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2684         p2p_set_timeout(p2p, 0, 200000);
2685 }
2686
2687
2688 /**
2689  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2690  * @p2p: P2P module context from p2p_init()
2691  */
2692 static void p2p_retry_pd(struct p2p_data *p2p)
2693 {
2694         struct p2p_device *dev;
2695
2696         if (p2p->state != P2P_IDLE)
2697                 return;
2698
2699         /*
2700          * Retry the prov disc req attempt only for the peer that the user had
2701          * requested.
2702          */
2703
2704         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2705                 if (os_memcmp(p2p->pending_pd_devaddr,
2706                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2707                         continue;
2708                 if (!dev->req_config_methods)
2709                         continue;
2710
2711                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2712                         MACSTR " (config methods 0x%x)",
2713                         MAC2STR(dev->info.p2p_device_addr),
2714                         dev->req_config_methods);
2715                 p2p_send_prov_disc_req(p2p, dev,
2716                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2717                                        p2p->pd_force_freq);
2718                 return;
2719         }
2720 }
2721
2722
2723 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2724 {
2725         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2726                 success);
2727
2728         /*
2729          * Postpone resetting the pending action state till after we actually
2730          * time out. This allows us to take some action like notifying any
2731          * interested parties about no response to the request.
2732          *
2733          * When the timer (below) goes off we check in IDLE, SEARCH, or
2734          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2735          * requests in, if this was still pending and then raise notification.
2736          */
2737
2738         if (!success) {
2739                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2740
2741                 if (p2p->user_initiated_pd &&
2742                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2743                 {
2744                         /* Retry request from timeout to avoid busy loops */
2745                         p2p->pending_action_state = P2P_PENDING_PD;
2746                         p2p_set_timeout(p2p, 0, 50000);
2747                 } else if (p2p->state != P2P_IDLE)
2748                         p2p_continue_find(p2p);
2749                 else if (p2p->user_initiated_pd) {
2750                         p2p->pending_action_state = P2P_PENDING_PD;
2751                         p2p_set_timeout(p2p, 0, 300000);
2752                 }
2753                 return;
2754         }
2755
2756         /*
2757          * This postponing, of resetting pending_action_state, needs to be
2758          * done only for user initiated PD requests and not internal ones.
2759          */
2760         if (p2p->user_initiated_pd)
2761                 p2p->pending_action_state = P2P_PENDING_PD;
2762         else
2763                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2764
2765         /* Wait for response from the peer */
2766         if (p2p->state == P2P_SEARCH)
2767                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2768         p2p_set_timeout(p2p, 0, 200000);
2769 }
2770
2771
2772 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2773                          struct os_reltime *rx_time, int level, const u8 *ies,
2774                          size_t ies_len)
2775 {
2776         if (os_reltime_before(rx_time, &p2p->find_start)) {
2777                 /*
2778                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2779                  * scan results for relatively long time. To avoid reporting
2780                  * stale information, update P2P peers only based on results
2781                  * that have based on frames received after the last p2p_find
2782                  * operation was started.
2783                  */
2784                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2785                         " (rx_time=%u.%06u)",
2786                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2787                         (unsigned int) rx_time->usec);
2788                 return 0;
2789         }
2790
2791         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2792
2793         return 0;
2794 }
2795
2796
2797 void p2p_scan_res_handled(struct p2p_data *p2p)
2798 {
2799         if (!p2p->p2p_scan_running) {
2800                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2801         }
2802         p2p->p2p_scan_running = 0;
2803         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2804
2805         if (p2p_run_after_scan(p2p))
2806                 return;
2807         if (p2p->state == P2P_SEARCH)
2808                 p2p_continue_find(p2p);
2809 }
2810
2811
2812 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2813 {
2814         u8 *len;
2815
2816 #ifdef CONFIG_WIFI_DISPLAY
2817         if (p2p->wfd_ie_probe_req)
2818                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2819 #endif /* CONFIG_WIFI_DISPLAY */
2820
2821         len = p2p_buf_add_ie_hdr(ies);
2822         p2p_buf_add_capability(ies, p2p->dev_capab &
2823                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2824         if (dev_id)
2825                 p2p_buf_add_device_id(ies, dev_id);
2826         if (p2p->cfg->reg_class && p2p->cfg->channel)
2827                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2828                                            p2p->cfg->reg_class,
2829                                            p2p->cfg->channel);
2830         if (p2p->ext_listen_interval)
2831                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2832                                               p2p->ext_listen_interval);
2833         /* TODO: p2p_buf_add_operating_channel() if GO */
2834         p2p_buf_update_ie_hdr(ies, len);
2835 }
2836
2837
2838 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2839 {
2840         size_t len = 100;
2841
2842 #ifdef CONFIG_WIFI_DISPLAY
2843         if (p2p && p2p->wfd_ie_probe_req)
2844                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2845 #endif /* CONFIG_WIFI_DISPLAY */
2846
2847         return len;
2848 }
2849
2850
2851 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2852 {
2853         return p2p_attr_text(p2p_ie, buf, end);
2854 }
2855
2856
2857 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2858 {
2859         struct p2p_device *dev = p2p->go_neg_peer;
2860         int timeout;
2861
2862         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2863
2864         if (dev == NULL) {
2865                 p2p_dbg(p2p, "No pending GO Negotiation");
2866                 return;
2867         }
2868
2869         if (success) {
2870                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2871                         p2p_set_state(p2p, P2P_IDLE);
2872                         return;
2873                 }
2874         } else if (dev->go_neg_req_sent) {
2875                 /* Cancel the increment from p2p_connect_send() on failure */
2876                 dev->go_neg_req_sent--;
2877         }
2878
2879         if (!success &&
2880             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2881             !is_zero_ether_addr(dev->member_in_go_dev)) {
2882                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2883                         MAC2STR(dev->info.p2p_device_addr));
2884                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2885                 p2p_send_dev_disc_req(p2p, dev);
2886                 return;
2887         }
2888
2889         /*
2890          * Use P2P find, if needed, to find the other device from its listen
2891          * channel.
2892          */
2893         p2p_set_state(p2p, P2P_CONNECT);
2894         timeout = success ? 500000 : 100000;
2895         if (!success && p2p->go_neg_peer &&
2896             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2897                 unsigned int r;
2898                 /*
2899                  * Peer is expected to wait our response and we will skip the
2900                  * listen phase. Add some randomness to the wait time here to
2901                  * make it less likely to hit cases where we could end up in
2902                  * sync with peer not listening.
2903                  */
2904                 os_get_random((u8 *) &r, sizeof(r));
2905                 timeout += r % 100000;
2906         }
2907         p2p_set_timeout(p2p, 0, timeout);
2908 }
2909
2910
2911 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2912 {
2913         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2914                 success);
2915         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2916                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2917                 return;
2918         }
2919         p2p_set_state(p2p, P2P_CONNECT);
2920         p2p_set_timeout(p2p, 0, 500000);
2921 }
2922
2923
2924 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2925                                        const u8 *addr)
2926 {
2927         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2928         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2929                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2930                                   p2p->go_neg_peer->status);
2931         } else if (success) {
2932                 struct p2p_device *dev;
2933                 dev = p2p_get_device(p2p, addr);
2934                 if (dev &&
2935                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2936                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2937         }
2938 }
2939
2940
2941 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2942                                enum p2p_send_action_result result)
2943 {
2944         struct p2p_device *dev;
2945
2946         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2947         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2948         if (result == P2P_SEND_ACTION_FAILED) {
2949                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2950                 return;
2951         }
2952         if (result == P2P_SEND_ACTION_NO_ACK) {
2953                 /*
2954                  * It looks like the TX status for GO Negotiation Confirm is
2955                  * often showing failure even when the peer has actually
2956                  * received the frame. Since the peer may change channels
2957                  * immediately after having received the frame, we may not see
2958                  * an Ack for retries, so just dropping a single frame may
2959                  * trigger this. To allow the group formation to succeed if the
2960                  * peer did indeed receive the frame, continue regardless of
2961                  * the TX status.
2962                  */
2963                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2964         }
2965
2966         dev = p2p->go_neg_peer;
2967         if (dev == NULL)
2968                 return;
2969
2970         p2p_go_complete(p2p, dev);
2971 }
2972
2973
2974 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2975                         const u8 *src, const u8 *bssid,
2976                         enum p2p_send_action_result result)
2977 {
2978         enum p2p_pending_action_state state;
2979         int success;
2980
2981         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2982                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2983                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2984                 MAC2STR(bssid), result);
2985         success = result == P2P_SEND_ACTION_SUCCESS;
2986         state = p2p->pending_action_state;
2987         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2988         switch (state) {
2989         case P2P_NO_PENDING_ACTION:
2990                 if (p2p->after_scan_tx_in_progress) {
2991                         p2p->after_scan_tx_in_progress = 0;
2992                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2993                             p2p_run_after_scan(p2p))
2994                                 break;
2995                         if (p2p->state == P2P_SEARCH) {
2996                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2997                                 p2p_continue_find(p2p);
2998                         }
2999                 }
3000                 break;
3001         case P2P_PENDING_GO_NEG_REQUEST:
3002                 p2p_go_neg_req_cb(p2p, success);
3003                 break;
3004         case P2P_PENDING_GO_NEG_RESPONSE:
3005                 p2p_go_neg_resp_cb(p2p, success);
3006                 break;
3007         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3008                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3009                 break;
3010         case P2P_PENDING_GO_NEG_CONFIRM:
3011                 p2p_go_neg_conf_cb(p2p, result);
3012                 break;
3013         case P2P_PENDING_SD:
3014                 p2p_sd_cb(p2p, success);
3015                 break;
3016         case P2P_PENDING_PD:
3017                 p2p_prov_disc_cb(p2p, success);
3018                 break;
3019         case P2P_PENDING_INVITATION_REQUEST:
3020                 p2p_invitation_req_cb(p2p, success);
3021                 break;
3022         case P2P_PENDING_INVITATION_RESPONSE:
3023                 p2p_invitation_resp_cb(p2p, success);
3024                 break;
3025         case P2P_PENDING_DEV_DISC_REQUEST:
3026                 p2p_dev_disc_req_cb(p2p, success);
3027                 break;
3028         case P2P_PENDING_DEV_DISC_RESPONSE:
3029                 p2p_dev_disc_resp_cb(p2p, success);
3030                 break;
3031         case P2P_PENDING_GO_DISC_REQ:
3032                 p2p_go_disc_req_cb(p2p, success);
3033                 break;
3034         }
3035
3036         p2p->after_scan_tx_in_progress = 0;
3037 }
3038
3039
3040 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3041                    unsigned int duration)
3042 {
3043         if (freq == p2p->pending_client_disc_freq) {
3044                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3045                 p2p->pending_client_disc_freq = 0;
3046                 return;
3047         }
3048
3049         if (freq != p2p->pending_listen_freq) {
3050                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3051                         freq, duration, p2p->pending_listen_freq);
3052                 return;
3053         }
3054
3055         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3056                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3057                 p2p->pending_listen_freq);
3058         p2p->in_listen = 1;
3059         p2p->drv_in_listen = freq;
3060         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3061                 /*
3062                  * Add 20 msec extra wait to avoid race condition with driver
3063                  * remain-on-channel end event, i.e., give driver more time to
3064                  * complete the operation before our timeout expires.
3065                  */
3066                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3067                                 p2p->pending_listen_usec + 20000);
3068         }
3069
3070         p2p->pending_listen_freq = 0;
3071 }
3072
3073
3074 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3075 {
3076         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3077         p2p->drv_in_listen = 0;
3078         if (p2p->in_listen)
3079                 return 0; /* Internal timeout will trigger the next step */
3080
3081         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3082                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3083                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3084                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3085                         return 0;
3086                 }
3087
3088                 p2p_set_state(p2p, P2P_CONNECT);
3089                 p2p_connect_send(p2p, p2p->go_neg_peer);
3090                 return 1;
3091         } else if (p2p->state == P2P_SEARCH) {
3092                 if (p2p->p2p_scan_running) {
3093                          /*
3094                           * Search is already in progress. This can happen if
3095                           * an Action frame RX is reported immediately after
3096                           * the end of a remain-on-channel operation and the
3097                           * response frame to that is sent using an offchannel
3098                           * operation while in p2p_find. Avoid an attempt to
3099                           * restart a scan here.
3100                           */
3101                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3102                         return 1;
3103                 }
3104                 if (p2p->pending_listen_freq) {
3105                         /*
3106                          * Better wait a bit if the driver is unable to start
3107                          * offchannel operation for some reason. p2p_search()
3108                          * will be started from internal timeout.
3109                          */
3110                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3111                         p2p_set_timeout(p2p, 0, 100000);
3112                         return 1;
3113                 }
3114                 if (p2p->search_delay) {
3115                         p2p_dbg(p2p, "Delay search operation by %u ms",
3116                                 p2p->search_delay);
3117                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3118                                         (p2p->search_delay % 1000) * 1000);
3119                         return 1;
3120                 }
3121                 p2p_search(p2p);
3122                 return 1;
3123         }
3124
3125         return 0;
3126 }
3127
3128
3129 static void p2p_timeout_connect(struct p2p_data *p2p)
3130 {
3131         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3132         if (p2p->go_neg_peer &&
3133             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3134                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3135                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3136                 return;
3137         }
3138         if (p2p->go_neg_peer &&
3139             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3140             p2p->go_neg_peer->connect_reqs < 120) {
3141                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3142                 p2p_connect_send(p2p, p2p->go_neg_peer);
3143                 return;
3144         }
3145
3146         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3147         p2p_listen_in_find(p2p, 0);
3148 }
3149
3150
3151 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3152 {
3153         if (p2p->go_neg_peer) {
3154                 if (p2p->drv_in_listen) {
3155                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3156                         return;
3157                 }
3158
3159                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3160                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3161                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3162                         return;
3163                 }
3164
3165                 p2p_set_state(p2p, P2P_CONNECT);
3166                 p2p_connect_send(p2p, p2p->go_neg_peer);
3167         } else
3168                 p2p_set_state(p2p, P2P_IDLE);
3169 }
3170
3171
3172 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3173 {
3174         /*
3175          * TODO: could remain constantly in Listen state for some time if there
3176          * are no other concurrent uses for the radio. For now, go to listen
3177          * state once per second to give other uses a chance to use the radio.
3178          */
3179         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3180         p2p_set_timeout(p2p, 0, 500000);
3181 }
3182
3183
3184 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3185 {
3186         struct p2p_device *dev = p2p->go_neg_peer;
3187
3188         if (dev == NULL) {
3189                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3190                 return;
3191         }
3192
3193         dev->wait_count++;
3194         if (dev->wait_count >= 120) {
3195                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3196                 p2p_go_neg_failed(p2p, dev, -1);
3197                 return;
3198         }
3199
3200         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3201         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3202         p2p_listen_in_find(p2p, 0);
3203 }
3204
3205
3206 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3207 {
3208         p2p_dbg(p2p, "Service Discovery Query timeout");
3209         if (p2p->sd_peer) {
3210                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3211                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3212                 p2p->sd_peer = NULL;
3213         }
3214         p2p_continue_find(p2p);
3215 }
3216
3217
3218 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3219 {
3220         p2p_dbg(p2p, "Provision Discovery Request timeout");
3221         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3222         p2p_continue_find(p2p);
3223 }
3224
3225
3226 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3227 {
3228         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3229
3230         /*
3231          * For user initiated PD requests that we have not gotten any responses
3232          * for while in IDLE state, we retry them a couple of times before
3233          * giving up.
3234          */
3235         if (!p2p->user_initiated_pd)
3236                 return;
3237
3238         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3239
3240         if (p2p->pd_retries) {
3241                 p2p->pd_retries--;
3242                 p2p_retry_pd(p2p);
3243         } else {
3244                 struct p2p_device *dev;
3245                 int for_join = 0;
3246
3247                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3248                         if (os_memcmp(p2p->pending_pd_devaddr,
3249                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3250                                 continue;
3251                         if (dev->req_config_methods &&
3252                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3253                                 for_join = 1;
3254                 }
3255
3256                 if (p2p->cfg->prov_disc_fail)
3257                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3258                                                  p2p->pending_pd_devaddr,
3259                                                  for_join ?
3260                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3261                                                  P2P_PROV_DISC_TIMEOUT);
3262                 p2p_reset_pending_pd(p2p);
3263         }
3264 }
3265
3266
3267 static void p2p_timeout_invite(struct p2p_data *p2p)
3268 {
3269         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3270         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3271         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3272                 /*
3273                  * Better remain on operating channel instead of listen channel
3274                  * when running a group.
3275                  */
3276                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3277                 p2p_set_timeout(p2p, 0, 100000);
3278                 return;
3279         }
3280         p2p_listen_in_find(p2p, 0);
3281 }
3282
3283
3284 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3285 {
3286         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3287                 p2p_set_state(p2p, P2P_INVITE);
3288                 p2p_invite_send(p2p, p2p->invite_peer,
3289                                 p2p->invite_go_dev_addr);
3290         } else {
3291                 if (p2p->invite_peer) {
3292                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3293                         if (p2p->cfg->invitation_result)
3294                                 p2p->cfg->invitation_result(
3295                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3296                                         p2p->invite_peer->info.p2p_device_addr,
3297                                         0);
3298                 }
3299                 p2p_set_state(p2p, P2P_IDLE);
3300         }
3301 }
3302
3303
3304 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3305 {
3306         struct p2p_data *p2p = eloop_ctx;
3307
3308         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3309
3310         p2p->in_listen = 0;
3311
3312         switch (p2p->state) {
3313         case P2P_IDLE:
3314                 /* Check if we timed out waiting for PD req */
3315                 if (p2p->pending_action_state == P2P_PENDING_PD)
3316                         p2p_timeout_prov_disc_req(p2p);
3317                 break;
3318         case P2P_SEARCH:
3319                 /* Check if we timed out waiting for PD req */
3320                 if (p2p->pending_action_state == P2P_PENDING_PD)
3321                         p2p_timeout_prov_disc_req(p2p);
3322                 if (p2p->search_delay && !p2p->in_search_delay) {
3323                         p2p_dbg(p2p, "Delay search operation by %u ms",
3324                                 p2p->search_delay);
3325                         p2p->in_search_delay = 1;
3326                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3327                                         (p2p->search_delay % 1000) * 1000);
3328                         break;
3329                 }
3330                 p2p->in_search_delay = 0;
3331                 p2p_search(p2p);
3332                 break;
3333         case P2P_CONNECT:
3334                 p2p_timeout_connect(p2p);
3335                 break;
3336         case P2P_CONNECT_LISTEN:
3337                 p2p_timeout_connect_listen(p2p);
3338                 break;
3339         case P2P_GO_NEG:
3340                 break;
3341         case P2P_LISTEN_ONLY:
3342                 /* Check if we timed out waiting for PD req */
3343                 if (p2p->pending_action_state == P2P_PENDING_PD)
3344                         p2p_timeout_prov_disc_req(p2p);
3345
3346                 if (p2p->ext_listen_only) {
3347                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3348                         p2p->ext_listen_only = 0;
3349                         p2p_set_state(p2p, P2P_IDLE);
3350                 }
3351                 break;
3352         case P2P_WAIT_PEER_CONNECT:
3353                 p2p_timeout_wait_peer_connect(p2p);
3354                 break;
3355         case P2P_WAIT_PEER_IDLE:
3356                 p2p_timeout_wait_peer_idle(p2p);
3357                 break;
3358         case P2P_SD_DURING_FIND:
3359                 p2p_timeout_sd_during_find(p2p);
3360                 break;
3361         case P2P_PROVISIONING:
3362                 break;
3363         case P2P_PD_DURING_FIND:
3364                 p2p_timeout_prov_disc_during_find(p2p);
3365                 break;
3366         case P2P_INVITE:
3367                 p2p_timeout_invite(p2p);
3368                 break;
3369         case P2P_INVITE_LISTEN:
3370                 p2p_timeout_invite_listen(p2p);
3371                 break;
3372         case P2P_SEARCH_WHEN_READY:
3373                 break;
3374         case P2P_CONTINUE_SEARCH_WHEN_READY:
3375                 break;
3376         }
3377 }
3378
3379
3380 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3381 {
3382         struct p2p_device *dev;
3383
3384         dev = p2p_get_device(p2p, peer_addr);
3385         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3386                 MACSTR, MAC2STR(peer_addr));
3387         if (dev == NULL) {
3388                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3389                 return -1;
3390         }
3391         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3392         dev->flags |= P2P_DEV_USER_REJECTED;
3393         return 0;
3394 }
3395
3396
3397 const char * p2p_wps_method_text(enum p2p_wps_method method)
3398 {
3399         switch (method) {
3400         case WPS_NOT_READY:
3401                 return "not-ready";
3402         case WPS_PIN_DISPLAY:
3403                 return "Display";
3404         case WPS_PIN_KEYPAD:
3405                 return "Keypad";
3406         case WPS_PBC:
3407                 return "PBC";
3408         }
3409
3410         return "??";
3411 }
3412
3413
3414 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3415 {
3416         switch (go_state) {
3417         case UNKNOWN_GO:
3418                 return "unknown";
3419         case LOCAL_GO:
3420                 return "local";
3421         case  REMOTE_GO:
3422                 return "remote";
3423         }
3424
3425         return "??";
3426 }
3427
3428
3429 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3430                                                const u8 *addr, int next)
3431 {
3432         struct p2p_device *dev;
3433
3434         if (addr)
3435                 dev = p2p_get_device(p2p, addr);
3436         else
3437                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3438
3439         if (dev && next) {
3440                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3441                 if (&dev->list == &p2p->devices)
3442                         dev = NULL;
3443         }
3444
3445         if (dev == NULL)
3446                 return NULL;
3447
3448         return &dev->info;
3449 }
3450
3451
3452 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3453                           char *buf, size_t buflen)
3454 {
3455         struct p2p_device *dev;
3456         int res;
3457         char *pos, *end;
3458         struct os_reltime now;
3459
3460         if (info == NULL)
3461                 return -1;
3462
3463         dev = (struct p2p_device *) (((u8 *) info) -
3464                                      offsetof(struct p2p_device, info));
3465
3466         pos = buf;
3467         end = buf + buflen;
3468
3469         os_get_reltime(&now);
3470         res = os_snprintf(pos, end - pos,
3471                           "age=%d\n"
3472                           "listen_freq=%d\n"
3473                           "wps_method=%s\n"
3474                           "interface_addr=" MACSTR "\n"
3475                           "member_in_go_dev=" MACSTR "\n"
3476                           "member_in_go_iface=" MACSTR "\n"
3477                           "go_neg_req_sent=%d\n"
3478                           "go_state=%s\n"
3479                           "dialog_token=%u\n"
3480                           "intended_addr=" MACSTR "\n"
3481                           "country=%c%c\n"
3482                           "oper_freq=%d\n"
3483                           "req_config_methods=0x%x\n"
3484                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3485                           "status=%d\n"
3486                           "wait_count=%u\n"
3487                           "invitation_reqs=%u\n",
3488                           (int) (now.sec - dev->last_seen.sec),
3489                           dev->listen_freq,
3490                           p2p_wps_method_text(dev->wps_method),
3491                           MAC2STR(dev->interface_addr),
3492                           MAC2STR(dev->member_in_go_dev),
3493                           MAC2STR(dev->member_in_go_iface),
3494                           dev->go_neg_req_sent,
3495                           p2p_go_state_text(dev->go_state),
3496                           dev->dialog_token,
3497                           MAC2STR(dev->intended_addr),
3498                           dev->country[0] ? dev->country[0] : '_',
3499                           dev->country[1] ? dev->country[1] : '_',
3500                           dev->oper_freq,
3501                           dev->req_config_methods,
3502                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3503                           "[PROBE_REQ_ONLY]" : "",
3504                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3505                           dev->flags & P2P_DEV_NOT_YET_READY ?
3506                           "[NOT_YET_READY]" : "",
3507                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3508                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3509                           "",
3510                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3511                           "[PD_PEER_DISPLAY]" : "",
3512                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3513                           "[PD_PEER_KEYPAD]" : "",
3514                           dev->flags & P2P_DEV_USER_REJECTED ?
3515                           "[USER_REJECTED]" : "",
3516                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3517                           "[PEER_WAITING_RESPONSE]" : "",
3518                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3519                           "[PREFER_PERSISTENT_GROUP]" : "",
3520                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3521                           "[WAIT_GO_NEG_RESPONSE]" : "",
3522                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3523                           "[WAIT_GO_NEG_CONFIRM]" : "",
3524                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3525                           "[GROUP_CLIENT_ONLY]" : "",
3526                           dev->flags & P2P_DEV_FORCE_FREQ ?
3527                           "[FORCE_FREQ]" : "",
3528                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3529                           "[PD_FOR_JOIN]" : "",
3530                           dev->status,
3531                           dev->wait_count,
3532                           dev->invitation_reqs);
3533         if (res < 0 || res >= end - pos)
3534                 return pos - buf;
3535         pos += res;
3536
3537         if (dev->ext_listen_period) {
3538                 res = os_snprintf(pos, end - pos,
3539                                   "ext_listen_period=%u\n"
3540                                   "ext_listen_interval=%u\n",
3541                                   dev->ext_listen_period,
3542                                   dev->ext_listen_interval);
3543                 if (res < 0 || res >= end - pos)
3544                         return pos - buf;
3545                 pos += res;
3546         }
3547
3548         if (dev->oper_ssid_len) {
3549                 res = os_snprintf(pos, end - pos,
3550                                   "oper_ssid=%s\n",
3551                                   wpa_ssid_txt(dev->oper_ssid,
3552                                                dev->oper_ssid_len));
3553                 if (res < 0 || res >= end - pos)
3554                         return pos - buf;
3555                 pos += res;
3556         }
3557
3558 #ifdef CONFIG_WIFI_DISPLAY
3559         if (dev->info.wfd_subelems) {
3560                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3561                 if (res < 0 || res >= end - pos)
3562                         return pos - buf;
3563                 pos += res;
3564
3565                 pos += wpa_snprintf_hex(pos, end - pos,
3566                                         wpabuf_head(dev->info.wfd_subelems),
3567                                         wpabuf_len(dev->info.wfd_subelems));
3568
3569                 res = os_snprintf(pos, end - pos, "\n");
3570                 if (res < 0 || res >= end - pos)
3571                         return pos - buf;
3572                 pos += res;
3573         }
3574 #endif /* CONFIG_WIFI_DISPLAY */
3575
3576         return pos - buf;
3577 }
3578
3579
3580 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3581 {
3582         return p2p_get_device(p2p, addr) != NULL;
3583 }
3584
3585
3586 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3587 {
3588         if (enabled) {
3589                 p2p_dbg(p2p, "Client discoverability enabled");
3590                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3591         } else {
3592                 p2p_dbg(p2p, "Client discoverability disabled");
3593                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3594         }
3595 }
3596
3597
3598 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3599                                               u32 duration2, u32 interval2)
3600 {
3601         struct wpabuf *req;
3602         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3603         u8 *len;
3604
3605         req = wpabuf_alloc(100);
3606         if (req == NULL)
3607                 return NULL;
3608
3609         if (duration1 || interval1) {
3610                 os_memset(&desc1, 0, sizeof(desc1));
3611                 desc1.count_type = 1;
3612                 desc1.duration = duration1;
3613                 desc1.interval = interval1;
3614                 ptr1 = &desc1;
3615
3616                 if (duration2 || interval2) {
3617                         os_memset(&desc2, 0, sizeof(desc2));
3618                         desc2.count_type = 2;
3619                         desc2.duration = duration2;
3620                         desc2.interval = interval2;
3621                         ptr2 = &desc2;
3622                 }
3623         }
3624
3625         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3626         len = p2p_buf_add_ie_hdr(req);
3627         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3628         p2p_buf_update_ie_hdr(req, len);
3629
3630         return req;
3631 }
3632
3633
3634 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3635                      const u8 *own_interface_addr, unsigned int freq,
3636                      u32 duration1, u32 interval1, u32 duration2,
3637                      u32 interval2)
3638 {
3639         struct wpabuf *req;
3640
3641         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3642                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3643                 "dur2=%u int2=%u",
3644                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3645                 freq, duration1, interval1, duration2, interval2);
3646
3647         req = p2p_build_presence_req(duration1, interval1, duration2,
3648                                      interval2);
3649         if (req == NULL)
3650                 return -1;
3651
3652         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3653         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3654                             go_interface_addr,
3655                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3656                 p2p_dbg(p2p, "Failed to send Action frame");
3657         }
3658         wpabuf_free(req);
3659
3660         return 0;
3661 }
3662
3663
3664 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3665                                                size_t noa_len, u8 dialog_token)
3666 {
3667         struct wpabuf *resp;
3668         u8 *len;
3669
3670         resp = wpabuf_alloc(100 + noa_len);
3671         if (resp == NULL)
3672                 return NULL;
3673
3674         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3675         len = p2p_buf_add_ie_hdr(resp);
3676         p2p_buf_add_status(resp, status);
3677         if (noa) {
3678                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3679                 wpabuf_put_le16(resp, noa_len);
3680                 wpabuf_put_data(resp, noa, noa_len);
3681         } else
3682                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3683         p2p_buf_update_ie_hdr(resp, len);
3684
3685         return resp;
3686 }
3687
3688
3689 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3690                                      const u8 *sa, const u8 *data, size_t len,
3691                                      int rx_freq)
3692 {
3693         struct p2p_message msg;
3694         u8 status;
3695         struct wpabuf *resp;
3696         size_t g;
3697         struct p2p_group *group = NULL;
3698         int parsed = 0;
3699         u8 noa[50];
3700         int noa_len;
3701
3702         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3703
3704         for (g = 0; g < p2p->num_groups; g++) {
3705                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3706                               ETH_ALEN) == 0) {
3707                         group = p2p->groups[g];
3708                         break;
3709                 }
3710         }
3711         if (group == NULL) {
3712                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3713                         MACSTR, MAC2STR(da));
3714                 return;
3715         }
3716
3717         if (p2p_parse(data, len, &msg) < 0) {
3718                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3719                 status = P2P_SC_FAIL_INVALID_PARAMS;
3720                 goto fail;
3721         }
3722         parsed = 1;
3723
3724         if (msg.noa == NULL) {
3725                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3726                 status = P2P_SC_FAIL_INVALID_PARAMS;
3727                 goto fail;
3728         }
3729
3730         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3731
3732 fail:
3733         if (p2p->cfg->get_noa)
3734                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3735                                             sizeof(noa));
3736         else
3737                 noa_len = -1;
3738         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3739                                        noa_len > 0 ? noa_len : 0,
3740                                        msg.dialog_token);
3741         if (parsed)
3742                 p2p_parse_free(&msg);
3743         if (resp == NULL)
3744                 return;
3745
3746         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3747         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3748                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3749                 p2p_dbg(p2p, "Failed to send Action frame");
3750         }
3751         wpabuf_free(resp);
3752 }
3753
3754
3755 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3756                                       const u8 *sa, const u8 *data, size_t len)
3757 {
3758         struct p2p_message msg;
3759
3760         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3761
3762         if (p2p_parse(data, len, &msg) < 0) {
3763                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3764                 return;
3765         }
3766
3767         if (msg.status == NULL || msg.noa == NULL) {
3768                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3769                 p2p_parse_free(&msg);
3770                 return;
3771         }
3772
3773         if (*msg.status) {
3774                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3775                         *msg.status);
3776                 p2p_parse_free(&msg);
3777                 return;
3778         }
3779
3780         p2p_dbg(p2p, "P2P Presence Request was accepted");
3781         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3782                     msg.noa, msg.noa_len);
3783         /* TODO: process NoA */
3784         p2p_parse_free(&msg);
3785 }
3786
3787
3788 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3789 {
3790         struct p2p_data *p2p = eloop_ctx;
3791
3792         if (p2p->ext_listen_interval) {
3793                 /* Schedule next extended listen timeout */
3794                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3795                                        p2p->ext_listen_interval_usec,
3796                                        p2p_ext_listen_timeout, p2p, NULL);
3797         }
3798
3799         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3800                 /*
3801                  * This should not really happen, but it looks like the Listen
3802                  * command may fail is something else (e.g., a scan) was
3803                  * running at an inconvenient time. As a workaround, allow new
3804                  * Extended Listen operation to be started.
3805                  */
3806                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3807                 p2p->ext_listen_only = 0;
3808                 p2p_set_state(p2p, P2P_IDLE);
3809         }
3810
3811         if (p2p->state != P2P_IDLE) {
3812                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3813                 return;
3814         }
3815
3816         p2p_dbg(p2p, "Extended Listen timeout");
3817         p2p->ext_listen_only = 1;
3818         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3819                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3820                 p2p->ext_listen_only = 0;
3821         }
3822 }
3823
3824
3825 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3826                    unsigned int interval)
3827 {
3828         if (period > 65535 || interval > 65535 || period > interval ||
3829             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3830                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3831                         period, interval);
3832                 return -1;
3833         }
3834
3835         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3836
3837         if (interval == 0) {
3838                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3839                 p2p->ext_listen_period = 0;
3840                 p2p->ext_listen_interval = 0;
3841                 return 0;
3842         }
3843
3844         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3845                 period, interval);
3846         p2p->ext_listen_period = period;
3847         p2p->ext_listen_interval = interval;
3848         p2p->ext_listen_interval_sec = interval / 1000;
3849         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3850
3851         eloop_register_timeout(p2p->ext_listen_interval_sec,
3852                                p2p->ext_listen_interval_usec,
3853                                p2p_ext_listen_timeout, p2p, NULL);
3854
3855         return 0;
3856 }
3857
3858
3859 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3860                       const u8 *ie, size_t ie_len)
3861 {
3862         struct p2p_message msg;
3863
3864         if (bssid == NULL || ie == NULL)
3865                 return;
3866
3867         os_memset(&msg, 0, sizeof(msg));
3868         if (p2p_parse_ies(ie, ie_len, &msg))
3869                 return;
3870         if (msg.minor_reason_code == NULL)
3871                 return;
3872
3873         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3874                 " reason_code=%u minor_reason_code=%u",
3875                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3876
3877         p2p_parse_free(&msg);
3878 }
3879
3880
3881 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3882                         const u8 *ie, size_t ie_len)
3883 {
3884         struct p2p_message msg;
3885
3886         if (bssid == NULL || ie == NULL)
3887                 return;
3888
3889         os_memset(&msg, 0, sizeof(msg));
3890         if (p2p_parse_ies(ie, ie_len, &msg))
3891                 return;
3892         if (msg.minor_reason_code == NULL)
3893                 return;
3894
3895         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3896                 " reason_code=%u minor_reason_code=%u",
3897                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3898
3899         p2p_parse_free(&msg);
3900 }
3901
3902
3903 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3904 {
3905         if (enabled) {
3906                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3907                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3908         } else {
3909                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3910                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3911         }
3912 }
3913
3914
3915 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3916 {
3917         if (p2p_channel_to_freq(reg_class, channel) < 0)
3918                 return -1;
3919
3920         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3921                 reg_class, channel);
3922         p2p->cfg->reg_class = reg_class;
3923         p2p->cfg->channel = channel;
3924
3925         return 0;
3926 }
3927
3928
3929 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3930 {
3931         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3932         if (postfix == NULL) {
3933                 p2p->cfg->ssid_postfix_len = 0;
3934                 return 0;
3935         }
3936         if (len > sizeof(p2p->cfg->ssid_postfix))
3937                 return -1;
3938         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3939         p2p->cfg->ssid_postfix_len = len;
3940         return 0;
3941 }
3942
3943
3944 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3945                          int cfg_op_channel)
3946 {
3947         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3948                 return -1;
3949
3950         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3951                 op_reg_class, op_channel);
3952         p2p->cfg->op_reg_class = op_reg_class;
3953         p2p->cfg->op_channel = op_channel;
3954         p2p->cfg->cfg_op_channel = cfg_op_channel;
3955         return 0;
3956 }
3957
3958
3959 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3960                       const struct p2p_channel *pref_chan)
3961 {
3962         struct p2p_channel *n;
3963
3964         if (pref_chan) {
3965                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3966                 if (n == NULL)
3967                         return -1;
3968                 os_memcpy(n, pref_chan,
3969                           num_pref_chan * sizeof(struct p2p_channel));
3970         } else
3971                 n = NULL;
3972
3973         os_free(p2p->cfg->pref_chan);
3974         p2p->cfg->pref_chan = n;
3975         p2p->cfg->num_pref_chan = num_pref_chan;
3976
3977         return 0;
3978 }
3979
3980
3981 int p2p_set_no_go_freq(struct p2p_data *p2p,
3982                        const struct wpa_freq_range_list *list)
3983 {
3984         struct wpa_freq_range *tmp;
3985
3986         if (list == NULL || list->num == 0) {
3987                 os_free(p2p->no_go_freq.range);
3988                 p2p->no_go_freq.range = NULL;
3989                 p2p->no_go_freq.num = 0;
3990                 return 0;
3991         }
3992
3993         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3994         if (tmp == NULL)
3995                 return -1;
3996         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3997         os_free(p2p->no_go_freq.range);
3998         p2p->no_go_freq.range = tmp;
3999         p2p->no_go_freq.num = list->num;
4000         p2p_dbg(p2p, "Updated no GO chan list");
4001
4002         return 0;
4003 }
4004
4005
4006 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4007                            u8 *iface_addr)
4008 {
4009         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4010         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4011                 return -1;
4012         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4013         return 0;
4014 }
4015
4016
4017 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4018                            u8 *dev_addr)
4019 {
4020         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4021         if (dev == NULL)
4022                 return -1;
4023         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4024         return 0;
4025 }
4026
4027
4028 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4029 {
4030         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4031         if (is_zero_ether_addr(p2p->peer_filter))
4032                 p2p_dbg(p2p, "Disable peer filter");
4033         else
4034                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4035                         MAC2STR(p2p->peer_filter));
4036 }
4037
4038
4039 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4040 {
4041         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4042         if (p2p->cross_connect == enabled)
4043                 return;
4044         p2p->cross_connect = enabled;
4045         /* TODO: may need to tear down any action group where we are GO(?) */
4046 }
4047
4048
4049 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4050 {
4051         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4052         if (dev == NULL)
4053                 return -1;
4054         if (dev->oper_freq <= 0)
4055                 return -1;
4056         return dev->oper_freq;
4057 }
4058
4059
4060 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4061 {
4062         p2p_dbg(p2p, "Intra BSS distribution %s",
4063                 enabled ? "enabled" : "disabled");
4064         p2p->cfg->p2p_intra_bss = enabled;
4065 }
4066
4067
4068 void p2p_update_channel_list(struct p2p_data *p2p,
4069                              const struct p2p_channels *chan,
4070                              const struct p2p_channels *cli_chan)
4071 {
4072         p2p_dbg(p2p, "Update channel list");
4073         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4074         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4075         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4076                   sizeof(struct p2p_channels));
4077         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4078 }
4079
4080
4081 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4082                     const u8 *src, const u8 *bssid, const u8 *buf,
4083                     size_t len, unsigned int wait_time)
4084 {
4085         if (p2p->p2p_scan_running) {
4086                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4087                 if (p2p->after_scan_tx) {
4088                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4089                         os_free(p2p->after_scan_tx);
4090                 }
4091                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4092                                                len);
4093                 if (p2p->after_scan_tx == NULL)
4094                         return -1;
4095                 p2p->after_scan_tx->freq = freq;
4096                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4097                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4098                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4099                 p2p->after_scan_tx->len = len;
4100                 p2p->after_scan_tx->wait_time = wait_time;
4101                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4102                 return 0;
4103         }
4104
4105         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4106                                      buf, len, wait_time);
4107 }
4108
4109
4110 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4111                            int freq_overall)
4112 {
4113         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4114                 freq_24, freq_5, freq_overall);
4115         p2p->best_freq_24 = freq_24;
4116         p2p->best_freq_5 = freq_5;
4117         p2p->best_freq_overall = freq_overall;
4118 }
4119
4120
4121 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4122 {
4123         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4124         p2p->own_freq_preference = freq;
4125 }
4126
4127
4128 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4129 {
4130         if (p2p == NULL || p2p->go_neg_peer == NULL)
4131                 return NULL;
4132         return p2p->go_neg_peer->info.p2p_device_addr;
4133 }
4134
4135
4136 const struct p2p_peer_info *
4137 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4138 {
4139         struct p2p_device *dev;
4140
4141         if (addr) {
4142                 dev = p2p_get_device(p2p, addr);
4143                 if (!dev)
4144                         return NULL;
4145
4146                 if (!next) {
4147                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4148                                 return NULL;
4149
4150                         return &dev->info;
4151                 } else {
4152                         do {
4153                                 dev = dl_list_first(&dev->list,
4154                                                     struct p2p_device,
4155                                                     list);
4156                                 if (&dev->list == &p2p->devices)
4157                                         return NULL;
4158                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4159                 }
4160         } else {
4161                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4162                 if (!dev)
4163                         return NULL;
4164                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4165                         dev = dl_list_first(&dev->list,
4166                                             struct p2p_device,
4167                                             list);
4168                         if (&dev->list == &p2p->devices)
4169                                 return NULL;
4170                 }
4171         }
4172
4173         return &dev->info;
4174 }
4175
4176
4177 int p2p_in_progress(struct p2p_data *p2p)
4178 {
4179         if (p2p == NULL)
4180                 return 0;
4181         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4182             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4183                 return 2;
4184         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4185 }
4186
4187
4188 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4189                             u8 client_timeout)
4190 {
4191         if (p2p) {
4192                 p2p->go_timeout = go_timeout;
4193                 p2p->client_timeout = client_timeout;
4194         }
4195 }
4196
4197
4198 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4199 {
4200         if (p2p && p2p->search_delay < delay)
4201                 p2p->search_delay = delay;
4202 }
4203
4204
4205 #ifdef CONFIG_WIFI_DISPLAY
4206
4207 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4208 {
4209         size_t g;
4210         struct p2p_group *group;
4211
4212         for (g = 0; g < p2p->num_groups; g++) {
4213                 group = p2p->groups[g];
4214                 p2p_group_force_beacon_update_ies(group);
4215         }
4216 }
4217
4218
4219 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4220 {
4221         wpabuf_free(p2p->wfd_ie_beacon);
4222         p2p->wfd_ie_beacon = ie;
4223         p2p_update_wfd_ie_groups(p2p);
4224         return 0;
4225 }
4226
4227
4228 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4229 {
4230         wpabuf_free(p2p->wfd_ie_probe_req);
4231         p2p->wfd_ie_probe_req = ie;
4232         return 0;
4233 }
4234
4235
4236 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4237 {
4238         wpabuf_free(p2p->wfd_ie_probe_resp);
4239         p2p->wfd_ie_probe_resp = ie;
4240         p2p_update_wfd_ie_groups(p2p);
4241         return 0;
4242 }
4243
4244
4245 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4246 {
4247         wpabuf_free(p2p->wfd_ie_assoc_req);
4248         p2p->wfd_ie_assoc_req = ie;
4249         return 0;
4250 }
4251
4252
4253 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4254 {
4255         wpabuf_free(p2p->wfd_ie_invitation);
4256         p2p->wfd_ie_invitation = ie;
4257         return 0;
4258 }
4259
4260
4261 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4262 {
4263         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4264         p2p->wfd_ie_prov_disc_req = ie;
4265         return 0;
4266 }
4267
4268
4269 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4270 {
4271         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4272         p2p->wfd_ie_prov_disc_resp = ie;
4273         return 0;
4274 }
4275
4276
4277 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4278 {
4279         wpabuf_free(p2p->wfd_ie_go_neg);
4280         p2p->wfd_ie_go_neg = ie;
4281         return 0;
4282 }
4283
4284
4285 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4286 {
4287         wpabuf_free(p2p->wfd_dev_info);
4288         if (elem) {
4289                 p2p->wfd_dev_info = wpabuf_dup(elem);
4290                 if (p2p->wfd_dev_info == NULL)
4291                         return -1;
4292         } else
4293                 p2p->wfd_dev_info = NULL;
4294
4295         return 0;
4296 }
4297
4298
4299 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4300 {
4301         wpabuf_free(p2p->wfd_assoc_bssid);
4302         if (elem) {
4303                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4304                 if (p2p->wfd_assoc_bssid == NULL)
4305                         return -1;
4306         } else
4307                 p2p->wfd_assoc_bssid = NULL;
4308
4309         return 0;
4310 }
4311
4312
4313 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4314                                   const struct wpabuf *elem)
4315 {
4316         wpabuf_free(p2p->wfd_coupled_sink_info);
4317         if (elem) {
4318                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4319                 if (p2p->wfd_coupled_sink_info == NULL)
4320                         return -1;
4321         } else
4322                 p2p->wfd_coupled_sink_info = NULL;
4323
4324         return 0;
4325 }
4326
4327 #endif /* CONFIG_WIFI_DISPLAY */
4328
4329
4330 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4331                      int max_disc_tu)
4332 {
4333         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4334                 return -1;
4335
4336         p2p->min_disc_int = min_disc_int;
4337         p2p->max_disc_int = max_disc_int;
4338         p2p->max_disc_tu = max_disc_tu;
4339         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4340                 min_disc_int, max_disc_int, max_disc_tu);
4341
4342         return 0;
4343 }
4344
4345
4346 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4347 {
4348         va_list ap;
4349         char buf[500];
4350
4351         if (!p2p->cfg->debug_print)
4352                 return;
4353
4354         va_start(ap, fmt);
4355         vsnprintf(buf, sizeof(buf), fmt, ap);
4356         buf[sizeof(buf) - 1] = '\0';
4357         va_end(ap);
4358         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4359 }
4360
4361
4362 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4363 {
4364         va_list ap;
4365         char buf[500];
4366
4367         if (!p2p->cfg->debug_print)
4368                 return;
4369
4370         va_start(ap, fmt);
4371         vsnprintf(buf, sizeof(buf), fmt, ap);
4372         buf[sizeof(buf) - 1] = '\0';
4373         va_end(ap);
4374         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4375 }
4376
4377
4378 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4379 {
4380         va_list ap;
4381         char buf[500];
4382
4383         if (!p2p->cfg->debug_print)
4384                 return;
4385
4386         va_start(ap, fmt);
4387         vsnprintf(buf, sizeof(buf), fmt, ap);
4388         buf[sizeof(buf) - 1] = '\0';
4389         va_end(ap);
4390         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4391 }