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_time now;
  52         size_t i;
  53
  54         os_get_time(&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_time(&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_time(&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_time_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_time(&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_time *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_time 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_time(&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_time_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_time));
 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_time(&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
1184         p2p_dbg(p2p, "Prepare channel best");
1185
1186         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1187             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1188             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1189             == 0) {
1190                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1191                 p2p->op_reg_class = op_class;
1192                 p2p->op_channel = op_channel;
1193         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1194                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1195                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1196                    == 0) {
1197                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1198                 p2p->op_reg_class = op_class;
1199                 p2p->op_channel = op_channel;
1200         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1201                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1202                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1203                                        &op_channel) == 0) {
1204                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1205                 p2p->op_reg_class = op_class;
1206                 p2p->op_channel = op_channel;
1207         } else if (p2p->cfg->num_pref_chan > 0 &&
1208                    p2p_channels_includes(&p2p->cfg->channels,
1209                                          p2p->cfg->pref_chan[0].op_class,
1210                                          p2p->cfg->pref_chan[0].chan)) {
1211                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1212                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1213                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1214         } else {
1215                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1216                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1217                 p2p->op_channel = p2p->cfg->op_channel;
1218         }
1219
1220         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1221                   sizeof(struct p2p_channels));
1222 }
1223
1224
1225 /**
1226  * p2p_prepare_channel - Select operating channel for GO Negotiation
1227  * @p2p: P2P module context from p2p_init()
1228  * @dev: Selected peer device
1229  * @force_freq: Forced frequency in MHz or 0 if not forced
1230  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1231  * @go: Whether the local end will be forced to be GO
1232  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1233  *
1234  * This function is used to do initial operating channel selection for GO
1235  * Negotiation prior to having received peer information. The selected channel
1236  * may be further optimized in p2p_reselect_channel() once the peer information
1237  * is available.
1238  */
1239 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1240                         unsigned int force_freq, unsigned int pref_freq, int go)
1241 {
1242         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1243                 force_freq, pref_freq, go);
1244         if (force_freq || pref_freq) {
1245                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1246                     0)
1247                         return -1;
1248         } else {
1249                 p2p_prepare_channel_best(p2p);
1250         }
1251         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1252         if (go)
1253                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1254         else if (!force_freq)
1255                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1256                                    &p2p->channels);
1257         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1258
1259         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1260                 p2p->op_reg_class, p2p->op_channel,
1261                 force_freq ? " (forced)" : "");
1262
1263         if (force_freq)
1264                 dev->flags |= P2P_DEV_FORCE_FREQ;
1265         else
1266                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1267
1268         return 0;
1269 }
1270
1271
1272 static void p2p_set_dev_persistent(struct p2p_device *dev,
1273                                    int persistent_group)
1274 {
1275         switch (persistent_group) {
1276         case 0:
1277                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1278                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1279                 break;
1280         case 1:
1281                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1282                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1283                 break;
1284         case 2:
1285                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1286                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1287                 break;
1288         }
1289 }
1290
1291
1292 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1293                 enum p2p_wps_method wps_method,
1294                 int go_intent, const u8 *own_interface_addr,
1295                 unsigned int force_freq, int persistent_group,
1296                 const u8 *force_ssid, size_t force_ssid_len,
1297                 int pd_before_go_neg, unsigned int pref_freq)
1298 {
1299         struct p2p_device *dev;
1300
1301         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1302                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1303                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1304                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1305                 wps_method, persistent_group, pd_before_go_neg);
1306
1307         dev = p2p_get_device(p2p, peer_addr);
1308         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1309                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1310                         MAC2STR(peer_addr));
1311                 return -1;
1312         }
1313
1314         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1315                                 go_intent == 15) < 0)
1316                 return -1;
1317
1318         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1319                 if (!(dev->info.dev_capab &
1320                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1321                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1322                                 " that is in a group and is not discoverable",
1323                                 MAC2STR(peer_addr));
1324                         return -1;
1325                 }
1326                 if (dev->oper_freq <= 0) {
1327                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1328                                 " with incomplete information",
1329                                 MAC2STR(peer_addr));
1330                         return -1;
1331                 }
1332
1333                 /*
1334                  * First, try to connect directly. If the peer does not
1335                  * acknowledge frames, assume it is sleeping and use device
1336                  * discoverability via the GO at that point.
1337                  */
1338         }
1339
1340         p2p->ssid_set = 0;
1341         if (force_ssid) {
1342                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1343                                   force_ssid, force_ssid_len);
1344                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1345                 p2p->ssid_len = force_ssid_len;
1346                 p2p->ssid_set = 1;
1347         }
1348
1349         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1350         dev->flags &= ~P2P_DEV_USER_REJECTED;
1351         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1352         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1353         if (pd_before_go_neg)
1354                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1355         else {
1356                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1357                 /*
1358                  * Assign dialog token and tie breaker here to use the same
1359                  * values in each retry within the same GO Negotiation exchange.
1360                  */
1361                 dev->dialog_token++;
1362                 if (dev->dialog_token == 0)
1363                         dev->dialog_token = 1;
1364                 dev->tie_breaker = p2p->next_tie_breaker;
1365                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1366         }
1367         dev->connect_reqs = 0;
1368         dev->go_neg_req_sent = 0;
1369         dev->go_state = UNKNOWN_GO;
1370         p2p_set_dev_persistent(dev, persistent_group);
1371         p2p->go_intent = go_intent;
1372         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1373
1374         if (p2p->state != P2P_IDLE)
1375                 p2p_stop_find(p2p);
1376
1377         if (p2p->after_scan_tx) {
1378                 /*
1379                  * We need to drop the pending frame to avoid issues with the
1380                  * new GO Negotiation, e.g., when the pending frame was from a
1381                  * previous attempt at starting a GO Negotiation.
1382                  */
1383                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1384                 os_free(p2p->after_scan_tx);
1385                 p2p->after_scan_tx = NULL;
1386         }
1387
1388         dev->wps_method = wps_method;
1389         dev->status = P2P_SC_SUCCESS;
1390
1391         if (p2p->p2p_scan_running) {
1392                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1393                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1394                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1395                 return 0;
1396         }
1397         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1398
1399         return p2p_connect_send(p2p, dev);
1400 }
1401
1402
1403 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1404                   enum p2p_wps_method wps_method,
1405                   int go_intent, const u8 *own_interface_addr,
1406                   unsigned int force_freq, int persistent_group,
1407                   const u8 *force_ssid, size_t force_ssid_len,
1408                   unsigned int pref_freq)
1409 {
1410         struct p2p_device *dev;
1411
1412         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1413                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1414                 " wps_method=%d  persistent_group=%d",
1415                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1416                 wps_method, persistent_group);
1417
1418         dev = p2p_get_device(p2p, peer_addr);
1419         if (dev == NULL) {
1420                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1421                         MAC2STR(peer_addr));
1422                 return -1;
1423         }
1424
1425         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1426                                 15) < 0)
1427                 return -1;
1428
1429         p2p->ssid_set = 0;
1430         if (force_ssid) {
1431                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1432                                   force_ssid, force_ssid_len);
1433                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1434                 p2p->ssid_len = force_ssid_len;
1435                 p2p->ssid_set = 1;
1436         }
1437
1438         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1439         dev->flags &= ~P2P_DEV_USER_REJECTED;
1440         dev->go_neg_req_sent = 0;
1441         dev->go_state = UNKNOWN_GO;
1442         p2p_set_dev_persistent(dev, persistent_group);
1443         p2p->go_intent = go_intent;
1444         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1445
1446         dev->wps_method = wps_method;
1447         dev->status = P2P_SC_SUCCESS;
1448
1449         return 0;
1450 }
1451
1452
1453 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1454                       struct p2p_device *dev, struct p2p_message *msg)
1455 {
1456         os_get_time(&dev->last_seen);
1457
1458         p2p_copy_wps_info(p2p, dev, 0, msg);
1459
1460         if (msg->listen_channel) {
1461                 int freq;
1462                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1463                                            msg->listen_channel[4]);
1464                 if (freq < 0) {
1465                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1466                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1467                                 msg->listen_channel[0],
1468                                 msg->listen_channel[1],
1469                                 msg->listen_channel[2],
1470                                 msg->listen_channel[3],
1471                                 msg->listen_channel[4]);
1472                 } else {
1473                         p2p_dbg(p2p, "Update peer " MACSTR
1474                                 " Listen channel: %u -> %u MHz",
1475                                 MAC2STR(dev->info.p2p_device_addr),
1476                                 dev->listen_freq, freq);
1477                         dev->listen_freq = freq;
1478                 }
1479         }
1480
1481         if (msg->wfd_subelems) {
1482                 wpabuf_free(dev->info.wfd_subelems);
1483                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1484         }
1485
1486         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1487                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1488                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1489         } else {
1490                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1491                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1492                         "listen_freq=%d",
1493                         MAC2STR(dev->info.p2p_device_addr),
1494                         dev->info.dev_capab, dev->info.group_capab,
1495                         dev->info.device_name, dev->listen_freq);
1496         }
1497
1498         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1499
1500         if (dev->flags & P2P_DEV_USER_REJECTED) {
1501                 p2p_dbg(p2p, "Do not report rejected device");
1502                 return;
1503         }
1504
1505         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1506                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1507         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1508 }
1509
1510
1511 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1512 {
1513         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1514         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1515         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1516                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1517         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1518 }
1519
1520
1521 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1522 {
1523         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1524         p2p_random(params->passphrase, 8);
1525         return 0;
1526 }
1527
1528
1529 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1530 {
1531         struct p2p_go_neg_results res;
1532         int go = peer->go_state == LOCAL_GO;
1533         struct p2p_channels intersection;
1534         int freqs;
1535         size_t i, j;
1536
1537         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1538                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1539
1540         os_memset(&res, 0, sizeof(res));
1541         res.role_go = go;
1542         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1543         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1544         res.wps_method = peer->wps_method;
1545         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1546                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1547                         res.persistent_group = 2;
1548                 else
1549                         res.persistent_group = 1;
1550         }
1551
1552         if (go) {
1553                 /* Setup AP mode for WPS provisioning */
1554                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1555                                                p2p->op_channel);
1556                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1557                 res.ssid_len = p2p->ssid_len;
1558                 p2p_random(res.passphrase, 8);
1559         } else {
1560                 res.freq = peer->oper_freq;
1561                 if (p2p->ssid_len) {
1562                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1563                         res.ssid_len = p2p->ssid_len;
1564                 }
1565         }
1566
1567         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1568         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1569         p2p_channels_intersect(&p2p->channels, &peer->channels,
1570                                &intersection);
1571         if (go) {
1572                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1573                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1574                                   &intersection);
1575         }
1576         freqs = 0;
1577         for (i = 0; i < intersection.reg_classes; i++) {
1578                 struct p2p_reg_class *c = &intersection.reg_class[i];
1579                 if (freqs + 1 == P2P_MAX_CHANNELS)
1580                         break;
1581                 for (j = 0; j < c->channels; j++) {
1582                         int freq;
1583                         if (freqs + 1 == P2P_MAX_CHANNELS)
1584                                 break;
1585                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1586                         if (freq < 0)
1587                                 continue;
1588                         res.freq_list[freqs++] = freq;
1589                 }
1590         }
1591
1592         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1593
1594         p2p_clear_timeout(p2p);
1595         p2p->ssid_set = 0;
1596         peer->go_neg_req_sent = 0;
1597         peer->wps_method = WPS_NOT_READY;
1598
1599         p2p_set_state(p2p, P2P_PROVISIONING);
1600         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1601 }
1602
1603
1604 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1605                               const u8 *data, size_t len, int rx_freq)
1606 {
1607         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1608         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1609
1610         if (len < 1)
1611                 return;
1612
1613         switch (data[0]) {
1614         case P2P_GO_NEG_REQ:
1615                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1616                 break;
1617         case P2P_GO_NEG_RESP:
1618                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1619                 break;
1620         case P2P_GO_NEG_CONF:
1621                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1622                 break;
1623         case P2P_INVITATION_REQ:
1624                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1625                                            rx_freq);
1626                 break;
1627         case P2P_INVITATION_RESP:
1628                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1629                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1630                 break;
1631         case P2P_PROV_DISC_REQ:
1632                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1633                 break;
1634         case P2P_PROV_DISC_RESP:
1635                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1636                 break;
1637         case P2P_DEV_DISC_REQ:
1638                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1639                 break;
1640         case P2P_DEV_DISC_RESP:
1641                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1642                 break;
1643         default:
1644                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1645                         data[0]);
1646                 break;
1647         }
1648 }
1649
1650
1651 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1652                                  const u8 *sa, const u8 *bssid, const u8 *data,
1653                                  size_t len, int freq)
1654 {
1655         if (len < 1)
1656                 return;
1657
1658         switch (data[0]) {
1659         case WLAN_PA_VENDOR_SPECIFIC:
1660                 data++;
1661                 len--;
1662                 if (len < 3)
1663                         return;
1664                 if (WPA_GET_BE24(data) != OUI_WFA)
1665                         return;
1666
1667                 data += 3;
1668                 len -= 3;
1669                 if (len < 1)
1670                         return;
1671
1672                 if (*data != P2P_OUI_TYPE)
1673                         return;
1674
1675                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1676                 break;
1677         case WLAN_PA_GAS_INITIAL_REQ:
1678                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1679                 break;
1680         case WLAN_PA_GAS_INITIAL_RESP:
1681                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1682                 break;
1683         case WLAN_PA_GAS_COMEBACK_REQ:
1684                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1685                 break;
1686         case WLAN_PA_GAS_COMEBACK_RESP:
1687                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1688                 break;
1689         }
1690 }
1691
1692
1693 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1694                    const u8 *bssid, u8 category,
1695                    const u8 *data, size_t len, int freq)
1696 {
1697         if (category == WLAN_ACTION_PUBLIC) {
1698                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1699                 return;
1700         }
1701
1702         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1703                 return;
1704
1705         if (len < 4)
1706                 return;
1707
1708         if (WPA_GET_BE24(data) != OUI_WFA)
1709                 return;
1710         data += 3;
1711         len -= 3;
1712
1713         if (*data != P2P_OUI_TYPE)
1714                 return;
1715         data++;
1716         len--;
1717
1718         /* P2P action frame */
1719         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1720         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1721
1722         if (len < 1)
1723                 return;
1724         switch (data[0]) {
1725         case P2P_NOA:
1726                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1727                 /* TODO */
1728                 break;
1729         case P2P_PRESENCE_REQ:
1730                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1731                 break;
1732         case P2P_PRESENCE_RESP:
1733                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1734                 break;
1735         case P2P_GO_DISC_REQ:
1736                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1737                 break;
1738         default:
1739                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1740                 break;
1741         }
1742 }
1743
1744
1745 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1746 {
1747         struct p2p_data *p2p = eloop_ctx;
1748         if (p2p->go_neg_peer == NULL)
1749                 return;
1750         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1751         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1752         p2p_connect_send(p2p, p2p->go_neg_peer);
1753 }
1754
1755
1756 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1757 {
1758         struct p2p_data *p2p = eloop_ctx;
1759         if (p2p->invite_peer == NULL)
1760                 return;
1761         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1762         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1763 }
1764
1765
1766 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1767                                        const u8 *ie, size_t ie_len)
1768 {
1769         struct p2p_message msg;
1770         struct p2p_device *dev;
1771
1772         os_memset(&msg, 0, sizeof(msg));
1773         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1774         {
1775                 p2p_parse_free(&msg);
1776                 return; /* not a P2P probe */
1777         }
1778
1779         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1780             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1781             != 0) {
1782                 /* The Probe Request is not part of P2P Device Discovery. It is
1783                  * not known whether the source address of the frame is the P2P
1784                  * Device Address or P2P Interface Address. Do not add a new
1785                  * peer entry based on this frames.
1786                  */
1787                 p2p_parse_free(&msg);
1788                 return;
1789         }
1790
1791         dev = p2p_get_device(p2p, addr);
1792         if (dev) {
1793                 if (dev->country[0] == 0 && msg.listen_channel)
1794                         os_memcpy(dev->country, msg.listen_channel, 3);
1795                 os_get_time(&dev->last_seen);
1796                 p2p_parse_free(&msg);
1797                 return; /* already known */
1798         }
1799
1800         dev = p2p_create_device(p2p, addr);
1801         if (dev == NULL) {
1802                 p2p_parse_free(&msg);
1803                 return;
1804         }
1805
1806         os_get_time(&dev->last_seen);
1807         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1808
1809         if (msg.listen_channel) {
1810                 os_memcpy(dev->country, msg.listen_channel, 3);
1811                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1812                                                        msg.listen_channel[4]);
1813         }
1814
1815         p2p_copy_wps_info(p2p, dev, 1, &msg);
1816
1817         if (msg.wfd_subelems) {
1818                 wpabuf_free(dev->info.wfd_subelems);
1819                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1820         }
1821
1822         p2p_parse_free(&msg);
1823
1824         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1825                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1826                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1827                 dev->info.group_capab, dev->info.device_name,
1828                 dev->listen_freq);
1829 }
1830
1831
1832 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1833                                                 const u8 *addr,
1834                                                 struct p2p_message *msg)
1835 {
1836         struct p2p_device *dev;
1837
1838         dev = p2p_get_device(p2p, addr);
1839         if (dev) {
1840                 os_get_time(&dev->last_seen);
1841                 return dev; /* already known */
1842         }
1843
1844         dev = p2p_create_device(p2p, addr);
1845         if (dev == NULL)
1846                 return NULL;
1847
1848         p2p_add_dev_info(p2p, addr, dev, msg);
1849
1850         return dev;
1851 }
1852
1853
1854 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1855 {
1856         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1857                 return 1;
1858         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1859             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1860             WPA_GET_BE16(&req_dev_type[6]) == 0)
1861                 return 1; /* Category match with wildcard OUI/sub-category */
1862         return 0;
1863 }
1864
1865
1866 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1867                         size_t num_req_dev_type)
1868 {
1869         size_t i;
1870         for (i = 0; i < num_req_dev_type; i++) {
1871                 if (dev_type_match(dev_type, req_dev_type[i]))
1872                         return 1;
1873         }
1874         return 0;
1875 }
1876
1877
1878 /**
1879  * p2p_match_dev_type - Match local device type with requested type
1880  * @p2p: P2P module context from p2p_init()
1881  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1882  * Returns: 1 on match, 0 on mismatch
1883  *
1884  * This function can be used to match the Requested Device Type attribute in
1885  * WPS IE with the local device types for deciding whether to reply to a Probe
1886  * Request frame.
1887  */
1888 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1889 {
1890         struct wps_parse_attr attr;
1891         size_t i;
1892
1893         if (wps_parse_msg(wps, &attr))
1894                 return 1; /* assume no Requested Device Type attributes */
1895
1896         if (attr.num_req_dev_type == 0)
1897                 return 1; /* no Requested Device Type attributes -> match */
1898
1899         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1900                                 attr.num_req_dev_type))
1901                 return 1; /* Own Primary Device Type matches */
1902
1903         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1904                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1905                                         attr.req_dev_type,
1906                                         attr.num_req_dev_type))
1907                 return 1; /* Own Secondary Device Type matches */
1908
1909         /* No matching device type found */
1910         return 0;
1911 }
1912
1913
1914 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1915 {
1916         struct wpabuf *buf;
1917         u8 *len;
1918         int pw_id = -1;
1919         size_t extra = 0;
1920
1921 #ifdef CONFIG_WIFI_DISPLAY
1922         if (p2p->wfd_ie_probe_resp)
1923                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1924 #endif /* CONFIG_WIFI_DISPLAY */
1925
1926         buf = wpabuf_alloc(1000 + extra);
1927         if (buf == NULL)
1928                 return NULL;
1929
1930         if (p2p->go_neg_peer) {
1931                 /* Advertise immediate availability of WPS credential */
1932                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1933         }
1934
1935         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1936                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1937                 wpabuf_free(buf);
1938                 return NULL;
1939         }
1940
1941 #ifdef CONFIG_WIFI_DISPLAY
1942         if (p2p->wfd_ie_probe_resp)
1943                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1944 #endif /* CONFIG_WIFI_DISPLAY */
1945
1946         /* P2P IE */
1947         len = p2p_buf_add_ie_hdr(buf);
1948         p2p_buf_add_capability(buf, p2p->dev_capab &
1949                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1950         if (p2p->ext_listen_interval)
1951                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1952                                               p2p->ext_listen_interval);
1953         p2p_buf_add_device_info(buf, p2p, NULL);
1954         p2p_buf_update_ie_hdr(buf, len);
1955
1956         return buf;
1957 }
1958
1959
1960 static enum p2p_probe_req_status
1961 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1962                 const u8 *bssid, const u8 *ie, size_t ie_len)
1963 {
1964         struct ieee802_11_elems elems;
1965         struct wpabuf *buf;
1966         struct ieee80211_mgmt *resp;
1967         struct p2p_message msg;
1968         struct wpabuf *ies;
1969
1970         if (!p2p->in_listen || !p2p->drv_in_listen) {
1971                 /* not in Listen state - ignore Probe Request */
1972                 return P2P_PREQ_NOT_LISTEN;
1973         }
1974
1975         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1976             ParseFailed) {
1977                 /* Ignore invalid Probe Request frames */
1978                 return P2P_PREQ_MALFORMED;
1979         }
1980
1981         if (elems.p2p == NULL) {
1982                 /* not a P2P probe - ignore it */
1983                 return P2P_PREQ_NOT_P2P;
1984         }
1985
1986         if (dst && !is_broadcast_ether_addr(dst) &&
1987             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1988                 /* Not sent to the broadcast address or our P2P Device Address
1989                  */
1990                 return P2P_PREQ_NOT_PROCESSED;
1991         }
1992
1993         if (bssid && !is_broadcast_ether_addr(bssid)) {
1994                 /* Not sent to the Wildcard BSSID */
1995                 return P2P_PREQ_NOT_PROCESSED;
1996         }
1997
1998         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1999             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2000             0) {
2001                 /* not using P2P Wildcard SSID - ignore */
2002                 return P2P_PREQ_NOT_PROCESSED;
2003         }
2004
2005         if (supp_rates_11b_only(&elems)) {
2006                 /* Indicates support for 11b rates only */
2007                 return P2P_PREQ_NOT_P2P;
2008         }
2009
2010         os_memset(&msg, 0, sizeof(msg));
2011         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2012                 /* Could not parse P2P attributes */
2013                 return P2P_PREQ_NOT_P2P;
2014         }
2015
2016         if (msg.device_id &&
2017             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2018                 /* Device ID did not match */
2019                 p2p_parse_free(&msg);
2020                 return P2P_PREQ_NOT_PROCESSED;
2021         }
2022
2023         /* Check Requested Device Type match */
2024         if (msg.wps_attributes &&
2025             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2026                 /* No match with Requested Device Type */
2027                 p2p_parse_free(&msg);
2028                 return P2P_PREQ_NOT_PROCESSED;
2029         }
2030         p2p_parse_free(&msg);
2031
2032         if (!p2p->cfg->send_probe_resp) {
2033                 /* Response generated elsewhere */
2034                 return P2P_PREQ_NOT_PROCESSED;
2035         }
2036
2037         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2038
2039         /*
2040          * We do not really have a specific BSS that this frame is advertising,
2041          * so build a frame that has some information in valid format. This is
2042          * really only used for discovery purposes, not to learn exact BSS
2043          * parameters.
2044          */
2045         ies = p2p_build_probe_resp_ies(p2p);
2046         if (ies == NULL)
2047                 return P2P_PREQ_NOT_PROCESSED;
2048
2049         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2050         if (buf == NULL) {
2051                 wpabuf_free(ies);
2052                 return P2P_PREQ_NOT_PROCESSED;
2053         }
2054
2055         resp = NULL;
2056         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2057
2058         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2059                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2060         os_memcpy(resp->da, addr, ETH_ALEN);
2061         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2062         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2063         resp->u.probe_resp.beacon_int = host_to_le16(100);
2064         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2065         resp->u.probe_resp.capab_info =
2066                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2067                              WLAN_CAPABILITY_PRIVACY |
2068                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2069
2070         wpabuf_put_u8(buf, WLAN_EID_SSID);
2071         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2072         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2073
2074         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2075         wpabuf_put_u8(buf, 8);
2076         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2077         wpabuf_put_u8(buf, 90 / 5);
2078         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2079         wpabuf_put_u8(buf, 180 / 5);
2080         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2081         wpabuf_put_u8(buf, 360 / 5);
2082         wpabuf_put_u8(buf, 480 / 5);
2083         wpabuf_put_u8(buf, 540 / 5);
2084
2085         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2086         wpabuf_put_u8(buf, 1);
2087         wpabuf_put_u8(buf, p2p->cfg->channel);
2088
2089         wpabuf_put_buf(buf, ies);
2090         wpabuf_free(ies);
2091
2092         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2093
2094         wpabuf_free(buf);
2095
2096         return P2P_PREQ_NOT_PROCESSED;
2097 }
2098
2099
2100 enum p2p_probe_req_status
2101 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2102                  const u8 *bssid, const u8 *ie, size_t ie_len)
2103 {
2104         enum p2p_probe_req_status res;
2105
2106         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2107
2108         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2109
2110         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2111             p2p->go_neg_peer &&
2112             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2113             == 0 &&
2114             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2115                 /* Received a Probe Request from GO Negotiation peer */
2116                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2117                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2118                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2119                 return P2P_PREQ_PROCESSED;
2120         }
2121
2122         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2123             p2p->invite_peer &&
2124             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2125             == 0) {
2126                 /* Received a Probe Request from Invite peer */
2127                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2128                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2129                 return P2P_PREQ_PROCESSED;
2130         }
2131
2132         return res;
2133 }
2134
2135
2136 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2137                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2138 {
2139         struct wpabuf *tmp;
2140         u8 *lpos;
2141         size_t tmplen;
2142         int res;
2143         u8 group_capab;
2144
2145         if (p2p_ie == NULL)
2146                 return 0; /* WLAN AP is not a P2P manager */
2147
2148         /*
2149          * (Re)Association Request - P2P IE
2150          * P2P Capability attribute (shall be present)
2151          * P2P Interface attribute (present if concurrent device and
2152          *      P2P Management is enabled)
2153          */
2154         tmp = wpabuf_alloc(200);
2155         if (tmp == NULL)
2156                 return -1;
2157
2158         lpos = p2p_buf_add_ie_hdr(tmp);
2159         group_capab = 0;
2160         if (p2p->num_groups > 0) {
2161                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2162                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2163                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2164                     p2p->cross_connect)
2165                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2166         }
2167         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2168         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2169             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2170                 p2p_buf_add_p2p_interface(tmp, p2p);
2171         p2p_buf_update_ie_hdr(tmp, lpos);
2172
2173         tmplen = wpabuf_len(tmp);
2174         if (tmplen > len)
2175                 res = -1;
2176         else {
2177                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2178                 res = tmplen;
2179         }
2180         wpabuf_free(tmp);
2181
2182         return res;
2183 }
2184
2185
2186 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2187                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2188 {
2189         struct wpabuf *tmp;
2190         u8 *lpos;
2191         struct p2p_device *peer;
2192         size_t tmplen;
2193         int res;
2194         size_t extra = 0;
2195
2196         if (!p2p_group)
2197                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2198
2199 #ifdef CONFIG_WIFI_DISPLAY
2200         if (p2p->wfd_ie_assoc_req)
2201                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2202 #endif /* CONFIG_WIFI_DISPLAY */
2203
2204         /*
2205          * (Re)Association Request - P2P IE
2206          * P2P Capability attribute (shall be present)
2207          * Extended Listen Timing (may be present)
2208          * P2P Device Info attribute (shall be present)
2209          */
2210         tmp = wpabuf_alloc(200 + extra);
2211         if (tmp == NULL)
2212                 return -1;
2213
2214 #ifdef CONFIG_WIFI_DISPLAY
2215         if (p2p->wfd_ie_assoc_req)
2216                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2217 #endif /* CONFIG_WIFI_DISPLAY */
2218
2219         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2220
2221         lpos = p2p_buf_add_ie_hdr(tmp);
2222         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2223         if (p2p->ext_listen_interval)
2224                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2225                                               p2p->ext_listen_interval);
2226         p2p_buf_add_device_info(tmp, p2p, peer);
2227         p2p_buf_update_ie_hdr(tmp, lpos);
2228
2229         tmplen = wpabuf_len(tmp);
2230         if (tmplen > len)
2231                 res = -1;
2232         else {
2233                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2234                 res = tmplen;
2235         }
2236         wpabuf_free(tmp);
2237
2238         return res;
2239 }
2240
2241
2242 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2243 {
2244         struct wpabuf *p2p_ie;
2245         int ret;
2246
2247         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2248         if (p2p_ie == NULL)
2249                 return 0;
2250
2251         ret = p2p_attr_text(p2p_ie, buf, end);
2252         wpabuf_free(p2p_ie);
2253         return ret;
2254 }
2255
2256
2257 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2258 {
2259         struct p2p_message msg;
2260
2261         os_memset(&msg, 0, sizeof(msg));
2262         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2263                 return -1;
2264
2265         if (msg.p2p_device_addr) {
2266                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2267                 return 0;
2268         } else if (msg.device_id) {
2269                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2270                 return 0;
2271         }
2272         return -1;
2273 }
2274
2275
2276 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2277 {
2278         struct wpabuf *p2p_ie;
2279         int ret;
2280
2281         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2282                                              P2P_IE_VENDOR_TYPE);
2283         if (p2p_ie == NULL)
2284                 return -1;
2285         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2286         wpabuf_free(p2p_ie);
2287         return ret;
2288 }
2289
2290
2291 static void p2p_clear_go_neg(struct p2p_data *p2p)
2292 {
2293         p2p->go_neg_peer = NULL;
2294         p2p_clear_timeout(p2p);
2295         p2p_set_state(p2p, P2P_IDLE);
2296 }
2297
2298
2299 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2300 {
2301         if (p2p->go_neg_peer == NULL) {
2302                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2303                 return; /* No pending Group Formation */
2304         }
2305
2306         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2307             0) {
2308                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2309                         MACSTR " (GO Negotiation peer " MACSTR ")",
2310                         MAC2STR(mac_addr),
2311                         MAC2STR(p2p->go_neg_peer->intended_addr));
2312                 return; /* Ignore unexpected peer address */
2313         }
2314
2315         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2316                 MAC2STR(mac_addr));
2317
2318         p2p_clear_go_neg(p2p);
2319 }
2320
2321
2322 void p2p_group_formation_failed(struct p2p_data *p2p)
2323 {
2324         if (p2p->go_neg_peer == NULL) {
2325                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2326                 return; /* No pending Group Formation */
2327         }
2328
2329         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2330                 MAC2STR(p2p->go_neg_peer->intended_addr));
2331
2332         p2p_clear_go_neg(p2p);
2333 }
2334
2335
2336 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2337 {
2338         struct p2p_data *p2p;
2339
2340         if (cfg->max_peers < 1)
2341                 return NULL;
2342
2343         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2344         if (p2p == NULL)
2345                 return NULL;
2346         p2p->cfg = (struct p2p_config *) (p2p + 1);
2347         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2348         if (cfg->dev_name)
2349                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2350         if (cfg->manufacturer)
2351                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2352         if (cfg->model_name)
2353                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2354         if (cfg->model_number)
2355                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2356         if (cfg->serial_number)
2357                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2358         if (cfg->pref_chan) {
2359                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2360                                                 sizeof(struct p2p_channel));
2361                 if (p2p->cfg->pref_chan) {
2362                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2363                                   cfg->num_pref_chan *
2364                                   sizeof(struct p2p_channel));
2365                 } else
2366                         p2p->cfg->num_pref_chan = 0;
2367         }
2368
2369         p2p->min_disc_int = 1;
2370         p2p->max_disc_int = 3;
2371         p2p->max_disc_tu = -1;
2372
2373         os_get_random(&p2p->next_tie_breaker, 1);
2374         p2p->next_tie_breaker &= 0x01;
2375         if (cfg->sd_request)
2376                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2377         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2378         if (cfg->concurrent_operations)
2379                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2380         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2381
2382         dl_list_init(&p2p->devices);
2383
2384         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2385                                p2p_expiration_timeout, p2p, NULL);
2386
2387         p2p->go_timeout = 100;
2388         p2p->client_timeout = 20;
2389
2390         p2p_dbg(p2p, "initialized");
2391         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2392         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2393
2394         return p2p;
2395 }
2396
2397
2398 void p2p_deinit(struct p2p_data *p2p)
2399 {
2400 #ifdef CONFIG_WIFI_DISPLAY
2401         wpabuf_free(p2p->wfd_ie_beacon);
2402         wpabuf_free(p2p->wfd_ie_probe_req);
2403         wpabuf_free(p2p->wfd_ie_probe_resp);
2404         wpabuf_free(p2p->wfd_ie_assoc_req);
2405         wpabuf_free(p2p->wfd_ie_invitation);
2406         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2407         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2408         wpabuf_free(p2p->wfd_ie_go_neg);
2409         wpabuf_free(p2p->wfd_dev_info);
2410         wpabuf_free(p2p->wfd_assoc_bssid);
2411         wpabuf_free(p2p->wfd_coupled_sink_info);
2412 #endif /* CONFIG_WIFI_DISPLAY */
2413
2414         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2415         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2416         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2417         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2418         p2p_flush(p2p);
2419         p2p_free_req_dev_types(p2p);
2420         os_free(p2p->cfg->dev_name);
2421         os_free(p2p->cfg->manufacturer);
2422         os_free(p2p->cfg->model_name);
2423         os_free(p2p->cfg->model_number);
2424         os_free(p2p->cfg->serial_number);
2425         os_free(p2p->cfg->pref_chan);
2426         os_free(p2p->groups);
2427         wpabuf_free(p2p->sd_resp);
2428         os_free(p2p->after_scan_tx);
2429         p2p_remove_wps_vendor_extensions(p2p);
2430         os_free(p2p->no_go_freq.range);
2431         os_free(p2p);
2432 }
2433
2434
2435 void p2p_flush(struct p2p_data *p2p)
2436 {
2437         struct p2p_device *dev, *prev;
2438         p2p_stop_find(p2p);
2439         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2440                               list) {
2441                 dl_list_del(&dev->list);
2442                 p2p_device_free(p2p, dev);
2443         }
2444         p2p_free_sd_queries(p2p);
2445         os_free(p2p->after_scan_tx);
2446         p2p->after_scan_tx = NULL;
2447 }
2448
2449
2450 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2451 {
2452         struct p2p_device *dev;
2453
2454         dev = p2p_get_device(p2p, addr);
2455         if (dev == NULL)
2456                 return -1;
2457
2458         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2459
2460         if (p2p->go_neg_peer == dev)
2461                 p2p->go_neg_peer = NULL;
2462
2463         dev->wps_method = WPS_NOT_READY;
2464         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2465         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2466
2467         /* Check if after_scan_tx is for this peer. If so free it */
2468         if (p2p->after_scan_tx &&
2469             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2470                 os_free(p2p->after_scan_tx);
2471                 p2p->after_scan_tx = NULL;
2472         }
2473
2474         return 0;
2475 }
2476
2477
2478 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2479 {
2480         os_free(p2p->cfg->dev_name);
2481         if (dev_name) {
2482                 p2p->cfg->dev_name = os_strdup(dev_name);
2483                 if (p2p->cfg->dev_name == NULL)
2484                         return -1;
2485         } else
2486                 p2p->cfg->dev_name = NULL;
2487         return 0;
2488 }
2489
2490
2491 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2492 {
2493         os_free(p2p->cfg->manufacturer);
2494         p2p->cfg->manufacturer = NULL;
2495         if (manufacturer) {
2496                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2497                 if (p2p->cfg->manufacturer == NULL)
2498                         return -1;
2499         }
2500
2501         return 0;
2502 }
2503
2504
2505 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2506 {
2507         os_free(p2p->cfg->model_name);
2508         p2p->cfg->model_name = NULL;
2509         if (model_name) {
2510                 p2p->cfg->model_name = os_strdup(model_name);
2511                 if (p2p->cfg->model_name == NULL)
2512                         return -1;
2513         }
2514
2515         return 0;
2516 }
2517
2518
2519 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2520 {
2521         os_free(p2p->cfg->model_number);
2522         p2p->cfg->model_number = NULL;
2523         if (model_number) {
2524                 p2p->cfg->model_number = os_strdup(model_number);
2525                 if (p2p->cfg->model_number == NULL)
2526                         return -1;
2527         }
2528
2529         return 0;
2530 }
2531
2532
2533 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2534 {
2535         os_free(p2p->cfg->serial_number);
2536         p2p->cfg->serial_number = NULL;
2537         if (serial_number) {
2538                 p2p->cfg->serial_number = os_strdup(serial_number);
2539                 if (p2p->cfg->serial_number == NULL)
2540                         return -1;
2541         }
2542
2543         return 0;
2544 }
2545
2546
2547 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2548 {
2549         p2p->cfg->config_methods = config_methods;
2550 }
2551
2552
2553 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2554 {
2555         os_memcpy(p2p->cfg->uuid, uuid, 16);
2556 }
2557
2558
2559 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2560 {
2561         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2562         return 0;
2563 }
2564
2565
2566 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2567                           size_t num_dev_types)
2568 {
2569         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2570                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2571         p2p->cfg->num_sec_dev_types = num_dev_types;
2572         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2573         return 0;
2574 }
2575
2576
2577 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2578 {
2579         int i;
2580
2581         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2582                 wpabuf_free(p2p->wps_vendor_ext[i]);
2583                 p2p->wps_vendor_ext[i] = NULL;
2584         }
2585 }
2586
2587
2588 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2589                                  const struct wpabuf *vendor_ext)
2590 {
2591         int i;
2592
2593         if (vendor_ext == NULL)
2594                 return -1;
2595
2596         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2597                 if (p2p->wps_vendor_ext[i] == NULL)
2598                         break;
2599         }
2600         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2601                 return -1;
2602
2603         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2604         if (p2p->wps_vendor_ext[i] == NULL)
2605                 return -1;
2606
2607         return 0;
2608 }
2609
2610
2611 int p2p_set_country(struct p2p_data *p2p, const char *country)
2612 {
2613         os_memcpy(p2p->cfg->country, country, 3);
2614         return 0;
2615 }
2616
2617
2618 void p2p_continue_find(struct p2p_data *p2p)
2619 {
2620         struct p2p_device *dev;
2621         p2p_set_state(p2p, P2P_SEARCH);
2622         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2623                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2624                         if (p2p_start_sd(p2p, dev) == 0)
2625                                 return;
2626                         else
2627                                 break;
2628                 } else if (dev->req_config_methods &&
2629                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2630                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2631                                 MACSTR " (config methods 0x%x)",
2632                                 MAC2STR(dev->info.p2p_device_addr),
2633                                 dev->req_config_methods);
2634                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2635                                 return;
2636                 }
2637         }
2638
2639         p2p_listen_in_find(p2p, 1);
2640 }
2641
2642
2643 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2644 {
2645         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2646                 success);
2647         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2648
2649         if (!success) {
2650                 if (p2p->sd_peer) {
2651                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2652                         p2p->sd_peer = NULL;
2653                 }
2654                 p2p_continue_find(p2p);
2655                 return;
2656         }
2657
2658         if (p2p->sd_peer == NULL) {
2659                 p2p_dbg(p2p, "No SD peer entry known");
2660                 p2p_continue_find(p2p);
2661                 return;
2662         }
2663
2664         /* Wait for response from the peer */
2665         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2666         p2p_set_timeout(p2p, 0, 200000);
2667 }
2668
2669
2670 /**
2671  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2672  * @p2p: P2P module context from p2p_init()
2673  */
2674 static void p2p_retry_pd(struct p2p_data *p2p)
2675 {
2676         struct p2p_device *dev;
2677
2678         if (p2p->state != P2P_IDLE)
2679                 return;
2680
2681         /*
2682          * Retry the prov disc req attempt only for the peer that the user had
2683          * requested.
2684          */
2685
2686         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2687                 if (os_memcmp(p2p->pending_pd_devaddr,
2688                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2689                         continue;
2690                 if (!dev->req_config_methods)
2691                         continue;
2692
2693                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2694                         MACSTR " (config methods 0x%x)",
2695                         MAC2STR(dev->info.p2p_device_addr),
2696                         dev->req_config_methods);
2697                 p2p_send_prov_disc_req(p2p, dev,
2698                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2699                                        p2p->pd_force_freq);
2700                 return;
2701         }
2702 }
2703
2704
2705 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2706 {
2707         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2708                 success);
2709
2710         /*
2711          * Postpone resetting the pending action state till after we actually
2712          * time out. This allows us to take some action like notifying any
2713          * interested parties about no response to the request.
2714          *
2715          * When the timer (below) goes off we check in IDLE, SEARCH, or
2716          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2717          * requests in, if this was still pending and then raise notification.
2718          */
2719
2720         if (!success) {
2721                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2722
2723                 if (p2p->user_initiated_pd &&
2724                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2725                 {
2726                         /* Retry request from timeout to avoid busy loops */
2727                         p2p->pending_action_state = P2P_PENDING_PD;
2728                         p2p_set_timeout(p2p, 0, 50000);
2729                 } else if (p2p->state != P2P_IDLE)
2730                         p2p_continue_find(p2p);
2731                 else if (p2p->user_initiated_pd) {
2732                         p2p->pending_action_state = P2P_PENDING_PD;
2733                         p2p_set_timeout(p2p, 0, 300000);
2734                 }
2735                 return;
2736         }
2737
2738         /*
2739          * This postponing, of resetting pending_action_state, needs to be
2740          * done only for user initiated PD requests and not internal ones.
2741          */
2742         if (p2p->user_initiated_pd)
2743                 p2p->pending_action_state = P2P_PENDING_PD;
2744         else
2745                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2746
2747         /* Wait for response from the peer */
2748         if (p2p->state == P2P_SEARCH)
2749                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2750         p2p_set_timeout(p2p, 0, 200000);
2751 }
2752
2753
2754 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2755                          struct os_time *rx_time, int level, const u8 *ies,
2756                          size_t ies_len)
2757 {
2758         if (os_time_before(rx_time, &p2p->find_start)) {
2759                 /*
2760                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2761                  * scan results for relatively long time. To avoid reporting
2762                  * stale information, update P2P peers only based on results
2763                  * that have based on frames received after the last p2p_find
2764                  * operation was started.
2765                  */
2766                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2767                         " (rx_time=%u.%06u)",
2768                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2769                         (unsigned int) rx_time->usec);
2770                 return 0;
2771         }
2772
2773         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2774
2775         return 0;
2776 }
2777
2778
2779 void p2p_scan_res_handled(struct p2p_data *p2p)
2780 {
2781         if (!p2p->p2p_scan_running) {
2782                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2783         }
2784         p2p->p2p_scan_running = 0;
2785         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2786
2787         if (p2p_run_after_scan(p2p))
2788                 return;
2789         if (p2p->state == P2P_SEARCH)
2790                 p2p_continue_find(p2p);
2791 }
2792
2793
2794 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2795 {
2796         u8 *len;
2797
2798 #ifdef CONFIG_WIFI_DISPLAY
2799         if (p2p->wfd_ie_probe_req)
2800                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2801 #endif /* CONFIG_WIFI_DISPLAY */
2802
2803         len = p2p_buf_add_ie_hdr(ies);
2804         p2p_buf_add_capability(ies, p2p->dev_capab &
2805                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2806         if (dev_id)
2807                 p2p_buf_add_device_id(ies, dev_id);
2808         if (p2p->cfg->reg_class && p2p->cfg->channel)
2809                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2810                                            p2p->cfg->reg_class,
2811                                            p2p->cfg->channel);
2812         if (p2p->ext_listen_interval)
2813                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2814                                               p2p->ext_listen_interval);
2815         /* TODO: p2p_buf_add_operating_channel() if GO */
2816         p2p_buf_update_ie_hdr(ies, len);
2817 }
2818
2819
2820 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2821 {
2822         size_t len = 100;
2823
2824 #ifdef CONFIG_WIFI_DISPLAY
2825         if (p2p && p2p->wfd_ie_probe_req)
2826                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2827 #endif /* CONFIG_WIFI_DISPLAY */
2828
2829         return len;
2830 }
2831
2832
2833 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2834 {
2835         return p2p_attr_text(p2p_ie, buf, end);
2836 }
2837
2838
2839 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2840 {
2841         struct p2p_device *dev = p2p->go_neg_peer;
2842         int timeout;
2843
2844         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2845
2846         if (dev == NULL) {
2847                 p2p_dbg(p2p, "No pending GO Negotiation");
2848                 return;
2849         }
2850
2851         if (success) {
2852                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2853                         p2p_set_state(p2p, P2P_IDLE);
2854                         return;
2855                 }
2856         } else if (dev->go_neg_req_sent) {
2857                 /* Cancel the increment from p2p_connect_send() on failure */
2858                 dev->go_neg_req_sent--;
2859         }
2860
2861         if (!success &&
2862             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2863             !is_zero_ether_addr(dev->member_in_go_dev)) {
2864                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2865                         MAC2STR(dev->info.p2p_device_addr));
2866                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2867                 p2p_send_dev_disc_req(p2p, dev);
2868                 return;
2869         }
2870
2871         /*
2872          * Use P2P find, if needed, to find the other device from its listen
2873          * channel.
2874          */
2875         p2p_set_state(p2p, P2P_CONNECT);
2876         timeout = success ? 500000 : 100000;
2877         if (!success && p2p->go_neg_peer &&
2878             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2879                 unsigned int r;
2880                 /*
2881                  * Peer is expected to wait our response and we will skip the
2882                  * listen phase. Add some randomness to the wait time here to
2883                  * make it less likely to hit cases where we could end up in
2884                  * sync with peer not listening.
2885                  */
2886                 os_get_random((u8 *) &r, sizeof(r));
2887                 timeout += r % 100000;
2888         }
2889         p2p_set_timeout(p2p, 0, timeout);
2890 }
2891
2892
2893 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2894 {
2895         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2896                 success);
2897         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2898                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2899                 return;
2900         }
2901         p2p_set_state(p2p, P2P_CONNECT);
2902         p2p_set_timeout(p2p, 0, 500000);
2903 }
2904
2905
2906 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2907                                        const u8 *addr)
2908 {
2909         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2910         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2911                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2912                                   p2p->go_neg_peer->status);
2913         } else if (success) {
2914                 struct p2p_device *dev;
2915                 dev = p2p_get_device(p2p, addr);
2916                 if (dev &&
2917                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2918                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2919         }
2920 }
2921
2922
2923 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2924                                enum p2p_send_action_result result)
2925 {
2926         struct p2p_device *dev;
2927
2928         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2929         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2930         if (result == P2P_SEND_ACTION_FAILED) {
2931                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2932                 return;
2933         }
2934         if (result == P2P_SEND_ACTION_NO_ACK) {
2935                 /*
2936                  * It looks like the TX status for GO Negotiation Confirm is
2937                  * often showing failure even when the peer has actually
2938                  * received the frame. Since the peer may change channels
2939                  * immediately after having received the frame, we may not see
2940                  * an Ack for retries, so just dropping a single frame may
2941                  * trigger this. To allow the group formation to succeed if the
2942                  * peer did indeed receive the frame, continue regardless of
2943                  * the TX status.
2944                  */
2945                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2946         }
2947
2948         dev = p2p->go_neg_peer;
2949         if (dev == NULL)
2950                 return;
2951
2952         p2p_go_complete(p2p, dev);
2953 }
2954
2955
2956 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2957                         const u8 *src, const u8 *bssid,
2958                         enum p2p_send_action_result result)
2959 {
2960         enum p2p_pending_action_state state;
2961         int success;
2962
2963         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2964                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2965                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2966                 MAC2STR(bssid), result);
2967         success = result == P2P_SEND_ACTION_SUCCESS;
2968         state = p2p->pending_action_state;
2969         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2970         switch (state) {
2971         case P2P_NO_PENDING_ACTION:
2972                 if (p2p->after_scan_tx_in_progress) {
2973                         p2p->after_scan_tx_in_progress = 0;
2974                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2975                             p2p_run_after_scan(p2p))
2976                                 break;
2977                         if (p2p->state == P2P_SEARCH) {
2978                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2979                                 p2p_continue_find(p2p);
2980                         }
2981                 }
2982                 break;
2983         case P2P_PENDING_GO_NEG_REQUEST:
2984                 p2p_go_neg_req_cb(p2p, success);
2985                 break;
2986         case P2P_PENDING_GO_NEG_RESPONSE:
2987                 p2p_go_neg_resp_cb(p2p, success);
2988                 break;
2989         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2990                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2991                 break;
2992         case P2P_PENDING_GO_NEG_CONFIRM:
2993                 p2p_go_neg_conf_cb(p2p, result);
2994                 break;
2995         case P2P_PENDING_SD:
2996                 p2p_sd_cb(p2p, success);
2997                 break;
2998         case P2P_PENDING_PD:
2999                 p2p_prov_disc_cb(p2p, success);
3000                 break;
3001         case P2P_PENDING_INVITATION_REQUEST:
3002                 p2p_invitation_req_cb(p2p, success);
3003                 break;
3004         case P2P_PENDING_INVITATION_RESPONSE:
3005                 p2p_invitation_resp_cb(p2p, success);
3006                 break;
3007         case P2P_PENDING_DEV_DISC_REQUEST:
3008                 p2p_dev_disc_req_cb(p2p, success);
3009                 break;
3010         case P2P_PENDING_DEV_DISC_RESPONSE:
3011                 p2p_dev_disc_resp_cb(p2p, success);
3012                 break;
3013         case P2P_PENDING_GO_DISC_REQ:
3014                 p2p_go_disc_req_cb(p2p, success);
3015                 break;
3016         }
3017
3018         p2p->after_scan_tx_in_progress = 0;
3019 }
3020
3021
3022 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3023                    unsigned int duration)
3024 {
3025         if (freq == p2p->pending_client_disc_freq) {
3026                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3027                 p2p->pending_client_disc_freq = 0;
3028                 return;
3029         }
3030
3031         if (freq != p2p->pending_listen_freq) {
3032                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3033                         freq, duration, p2p->pending_listen_freq);
3034                 return;
3035         }
3036
3037         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3038                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3039                 p2p->pending_listen_freq);
3040         p2p->in_listen = 1;
3041         p2p->drv_in_listen = freq;
3042         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3043                 /*
3044                  * Add 20 msec extra wait to avoid race condition with driver
3045                  * remain-on-channel end event, i.e., give driver more time to
3046                  * complete the operation before our timeout expires.
3047                  */
3048                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3049                                 p2p->pending_listen_usec + 20000);
3050         }
3051
3052         p2p->pending_listen_freq = 0;
3053 }
3054
3055
3056 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3057 {
3058         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3059         p2p->drv_in_listen = 0;
3060         if (p2p->in_listen)
3061                 return 0; /* Internal timeout will trigger the next step */
3062
3063         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3064                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3065                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3066                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3067                         return 0;
3068                 }
3069
3070                 p2p_set_state(p2p, P2P_CONNECT);
3071                 p2p_connect_send(p2p, p2p->go_neg_peer);
3072                 return 1;
3073         } else if (p2p->state == P2P_SEARCH) {
3074                 if (p2p->p2p_scan_running) {
3075                          /*
3076                           * Search is already in progress. This can happen if
3077                           * an Action frame RX is reported immediately after
3078                           * the end of a remain-on-channel operation and the
3079                           * response frame to that is sent using an offchannel
3080                           * operation while in p2p_find. Avoid an attempt to
3081                           * restart a scan here.
3082                           */
3083                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3084                         return 1;
3085                 }
3086                 if (p2p->pending_listen_freq) {
3087                         /*
3088                          * Better wait a bit if the driver is unable to start
3089                          * offchannel operation for some reason. p2p_search()
3090                          * will be started from internal timeout.
3091                          */
3092                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3093                         p2p_set_timeout(p2p, 0, 100000);
3094                         return 1;
3095                 }
3096                 if (p2p->search_delay) {
3097                         p2p_dbg(p2p, "Delay search operation by %u ms",
3098                                 p2p->search_delay);
3099                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3100                                         (p2p->search_delay % 1000) * 1000);
3101                         return 1;
3102                 }
3103                 p2p_search(p2p);
3104                 return 1;
3105         }
3106
3107         return 0;
3108 }
3109
3110
3111 static void p2p_timeout_connect(struct p2p_data *p2p)
3112 {
3113         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3114         if (p2p->go_neg_peer &&
3115             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3116                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3117                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3118                 return;
3119         }
3120         if (p2p->go_neg_peer &&
3121             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3122             p2p->go_neg_peer->connect_reqs < 120) {
3123                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3124                 p2p_connect_send(p2p, p2p->go_neg_peer);
3125                 return;
3126         }
3127
3128         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3129         p2p_listen_in_find(p2p, 0);
3130 }
3131
3132
3133 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3134 {
3135         if (p2p->go_neg_peer) {
3136                 if (p2p->drv_in_listen) {
3137                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3138                         return;
3139                 }
3140
3141                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3142                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3143                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3144                         return;
3145                 }
3146
3147                 p2p_set_state(p2p, P2P_CONNECT);
3148                 p2p_connect_send(p2p, p2p->go_neg_peer);
3149         } else
3150                 p2p_set_state(p2p, P2P_IDLE);
3151 }
3152
3153
3154 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3155 {
3156         /*
3157          * TODO: could remain constantly in Listen state for some time if there
3158          * are no other concurrent uses for the radio. For now, go to listen
3159          * state once per second to give other uses a chance to use the radio.
3160          */
3161         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3162         p2p_set_timeout(p2p, 0, 500000);
3163 }
3164
3165
3166 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3167 {
3168         struct p2p_device *dev = p2p->go_neg_peer;
3169
3170         if (dev == NULL) {
3171                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3172                 return;
3173         }
3174
3175         dev->wait_count++;
3176         if (dev->wait_count >= 120) {
3177                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3178                 p2p_go_neg_failed(p2p, dev, -1);
3179                 return;
3180         }
3181
3182         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3183         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3184         p2p_listen_in_find(p2p, 0);
3185 }
3186
3187
3188 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3189 {
3190         p2p_dbg(p2p, "Service Discovery Query timeout");
3191         if (p2p->sd_peer) {
3192                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3193                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3194                 p2p->sd_peer = NULL;
3195         }
3196         p2p_continue_find(p2p);
3197 }
3198
3199
3200 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3201 {
3202         p2p_dbg(p2p, "Provision Discovery Request timeout");
3203         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3204         p2p_continue_find(p2p);
3205 }
3206
3207
3208 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3209 {
3210         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3211
3212         /*
3213          * For user initiated PD requests that we have not gotten any responses
3214          * for while in IDLE state, we retry them a couple of times before
3215          * giving up.
3216          */
3217         if (!p2p->user_initiated_pd)
3218                 return;
3219
3220         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3221
3222         if (p2p->pd_retries) {
3223                 p2p->pd_retries--;
3224                 p2p_retry_pd(p2p);
3225         } else {
3226                 struct p2p_device *dev;
3227                 int for_join = 0;
3228
3229                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3230                         if (os_memcmp(p2p->pending_pd_devaddr,
3231                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3232                                 continue;
3233                         if (dev->req_config_methods &&
3234                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3235                                 for_join = 1;
3236                 }
3237
3238                 if (p2p->cfg->prov_disc_fail)
3239                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3240                                                  p2p->pending_pd_devaddr,
3241                                                  for_join ?
3242                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3243                                                  P2P_PROV_DISC_TIMEOUT);
3244                 p2p_reset_pending_pd(p2p);
3245         }
3246 }
3247
3248
3249 static void p2p_timeout_invite(struct p2p_data *p2p)
3250 {
3251         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3252         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3253         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3254                 /*
3255                  * Better remain on operating channel instead of listen channel
3256                  * when running a group.
3257                  */
3258                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3259                 p2p_set_timeout(p2p, 0, 100000);
3260                 return;
3261         }
3262         p2p_listen_in_find(p2p, 0);
3263 }
3264
3265
3266 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3267 {
3268         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3269                 p2p_set_state(p2p, P2P_INVITE);
3270                 p2p_invite_send(p2p, p2p->invite_peer,
3271                                 p2p->invite_go_dev_addr);
3272         } else {
3273                 if (p2p->invite_peer) {
3274                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3275                         if (p2p->cfg->invitation_result)
3276                                 p2p->cfg->invitation_result(
3277                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3278                                         p2p->invite_peer->info.p2p_device_addr);
3279                 }
3280                 p2p_set_state(p2p, P2P_IDLE);
3281         }
3282 }
3283
3284
3285 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3286 {
3287         struct p2p_data *p2p = eloop_ctx;
3288
3289         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3290
3291         p2p->in_listen = 0;
3292
3293         switch (p2p->state) {
3294         case P2P_IDLE:
3295                 /* Check if we timed out waiting for PD req */
3296                 if (p2p->pending_action_state == P2P_PENDING_PD)
3297                         p2p_timeout_prov_disc_req(p2p);
3298                 break;
3299         case P2P_SEARCH:
3300                 /* Check if we timed out waiting for PD req */
3301                 if (p2p->pending_action_state == P2P_PENDING_PD)
3302                         p2p_timeout_prov_disc_req(p2p);
3303                 if (p2p->search_delay && !p2p->in_search_delay) {
3304                         p2p_dbg(p2p, "Delay search operation by %u ms",
3305                                 p2p->search_delay);
3306                         p2p->in_search_delay = 1;
3307                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3308                                         (p2p->search_delay % 1000) * 1000);
3309                         break;
3310                 }
3311                 p2p->in_search_delay = 0;
3312                 p2p_search(p2p);
3313                 break;
3314         case P2P_CONNECT:
3315                 p2p_timeout_connect(p2p);
3316                 break;
3317         case P2P_CONNECT_LISTEN:
3318                 p2p_timeout_connect_listen(p2p);
3319                 break;
3320         case P2P_GO_NEG:
3321                 break;
3322         case P2P_LISTEN_ONLY:
3323                 /* Check if we timed out waiting for PD req */
3324                 if (p2p->pending_action_state == P2P_PENDING_PD)
3325                         p2p_timeout_prov_disc_req(p2p);
3326
3327                 if (p2p->ext_listen_only) {
3328                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3329                         p2p->ext_listen_only = 0;
3330                         p2p_set_state(p2p, P2P_IDLE);
3331                 }
3332                 break;
3333         case P2P_WAIT_PEER_CONNECT:
3334                 p2p_timeout_wait_peer_connect(p2p);
3335                 break;
3336         case P2P_WAIT_PEER_IDLE:
3337                 p2p_timeout_wait_peer_idle(p2p);
3338                 break;
3339         case P2P_SD_DURING_FIND:
3340                 p2p_timeout_sd_during_find(p2p);
3341                 break;
3342         case P2P_PROVISIONING:
3343                 break;
3344         case P2P_PD_DURING_FIND:
3345                 p2p_timeout_prov_disc_during_find(p2p);
3346                 break;
3347         case P2P_INVITE:
3348                 p2p_timeout_invite(p2p);
3349                 break;
3350         case P2P_INVITE_LISTEN:
3351                 p2p_timeout_invite_listen(p2p);
3352                 break;
3353         case P2P_SEARCH_WHEN_READY:
3354                 break;
3355         case P2P_CONTINUE_SEARCH_WHEN_READY:
3356                 break;
3357         }
3358 }
3359
3360
3361 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3362 {
3363         struct p2p_device *dev;
3364
3365         dev = p2p_get_device(p2p, peer_addr);
3366         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3367                 MACSTR, MAC2STR(peer_addr));
3368         if (dev == NULL) {
3369                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3370                 return -1;
3371         }
3372         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3373         dev->flags |= P2P_DEV_USER_REJECTED;
3374         return 0;
3375 }
3376
3377
3378 const char * p2p_wps_method_text(enum p2p_wps_method method)
3379 {
3380         switch (method) {
3381         case WPS_NOT_READY:
3382                 return "not-ready";
3383         case WPS_PIN_DISPLAY:
3384                 return "Display";
3385         case WPS_PIN_KEYPAD:
3386                 return "Keypad";
3387         case WPS_PBC:
3388                 return "PBC";
3389         }
3390
3391         return "??";
3392 }
3393
3394
3395 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3396 {
3397         switch (go_state) {
3398         case UNKNOWN_GO:
3399                 return "unknown";
3400         case LOCAL_GO:
3401                 return "local";
3402         case  REMOTE_GO:
3403                 return "remote";
3404         }
3405
3406         return "??";
3407 }
3408
3409
3410 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3411                                                const u8 *addr, int next)
3412 {
3413         struct p2p_device *dev;
3414
3415         if (addr)
3416                 dev = p2p_get_device(p2p, addr);
3417         else
3418                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3419
3420         if (dev && next) {
3421                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3422                 if (&dev->list == &p2p->devices)
3423                         dev = NULL;
3424         }
3425
3426         if (dev == NULL)
3427                 return NULL;
3428
3429         return &dev->info;
3430 }
3431
3432
3433 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3434                           char *buf, size_t buflen)
3435 {
3436         struct p2p_device *dev;
3437         int res;
3438         char *pos, *end;
3439         struct os_time now;
3440
3441         if (info == NULL)
3442                 return -1;
3443
3444         dev = (struct p2p_device *) (((u8 *) info) -
3445                                      offsetof(struct p2p_device, info));
3446
3447         pos = buf;
3448         end = buf + buflen;
3449
3450         os_get_time(&now);
3451         res = os_snprintf(pos, end - pos,
3452                           "age=%d\n"
3453                           "listen_freq=%d\n"
3454                           "wps_method=%s\n"
3455                           "interface_addr=" MACSTR "\n"
3456                           "member_in_go_dev=" MACSTR "\n"
3457                           "member_in_go_iface=" MACSTR "\n"
3458                           "go_neg_req_sent=%d\n"
3459                           "go_state=%s\n"
3460                           "dialog_token=%u\n"
3461                           "intended_addr=" MACSTR "\n"
3462                           "country=%c%c\n"
3463                           "oper_freq=%d\n"
3464                           "req_config_methods=0x%x\n"
3465                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3466                           "status=%d\n"
3467                           "wait_count=%u\n"
3468                           "invitation_reqs=%u\n",
3469                           (int) (now.sec - dev->last_seen.sec),
3470                           dev->listen_freq,
3471                           p2p_wps_method_text(dev->wps_method),
3472                           MAC2STR(dev->interface_addr),
3473                           MAC2STR(dev->member_in_go_dev),
3474                           MAC2STR(dev->member_in_go_iface),
3475                           dev->go_neg_req_sent,
3476                           p2p_go_state_text(dev->go_state),
3477                           dev->dialog_token,
3478                           MAC2STR(dev->intended_addr),
3479                           dev->country[0] ? dev->country[0] : '_',
3480                           dev->country[1] ? dev->country[1] : '_',
3481                           dev->oper_freq,
3482                           dev->req_config_methods,
3483                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3484                           "[PROBE_REQ_ONLY]" : "",
3485                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3486                           dev->flags & P2P_DEV_NOT_YET_READY ?
3487                           "[NOT_YET_READY]" : "",
3488                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3489                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3490                           "",
3491                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3492                           "[PD_PEER_DISPLAY]" : "",
3493                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3494                           "[PD_PEER_KEYPAD]" : "",
3495                           dev->flags & P2P_DEV_USER_REJECTED ?
3496                           "[USER_REJECTED]" : "",
3497                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3498                           "[PEER_WAITING_RESPONSE]" : "",
3499                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3500                           "[PREFER_PERSISTENT_GROUP]" : "",
3501                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3502                           "[WAIT_GO_NEG_RESPONSE]" : "",
3503                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3504                           "[WAIT_GO_NEG_CONFIRM]" : "",
3505                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3506                           "[GROUP_CLIENT_ONLY]" : "",
3507                           dev->flags & P2P_DEV_FORCE_FREQ ?
3508                           "[FORCE_FREQ]" : "",
3509                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3510                           "[PD_FOR_JOIN]" : "",
3511                           dev->status,
3512                           dev->wait_count,
3513                           dev->invitation_reqs);
3514         if (res < 0 || res >= end - pos)
3515                 return pos - buf;
3516         pos += res;
3517
3518         if (dev->ext_listen_period) {
3519                 res = os_snprintf(pos, end - pos,
3520                                   "ext_listen_period=%u\n"
3521                                   "ext_listen_interval=%u\n",
3522                                   dev->ext_listen_period,
3523                                   dev->ext_listen_interval);
3524                 if (res < 0 || res >= end - pos)
3525                         return pos - buf;
3526                 pos += res;
3527         }
3528
3529         if (dev->oper_ssid_len) {
3530                 res = os_snprintf(pos, end - pos,
3531                                   "oper_ssid=%s\n",
3532                                   wpa_ssid_txt(dev->oper_ssid,
3533                                                dev->oper_ssid_len));
3534                 if (res < 0 || res >= end - pos)
3535                         return pos - buf;
3536                 pos += res;
3537         }
3538
3539 #ifdef CONFIG_WIFI_DISPLAY
3540         if (dev->info.wfd_subelems) {
3541                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3542                 if (res < 0 || res >= end - pos)
3543                         return pos - buf;
3544                 pos += res;
3545
3546                 pos += wpa_snprintf_hex(pos, end - pos,
3547                                         wpabuf_head(dev->info.wfd_subelems),
3548                                         wpabuf_len(dev->info.wfd_subelems));
3549
3550                 res = os_snprintf(pos, end - pos, "\n");
3551                 if (res < 0 || res >= end - pos)
3552                         return pos - buf;
3553                 pos += res;
3554         }
3555 #endif /* CONFIG_WIFI_DISPLAY */
3556
3557         return pos - buf;
3558 }
3559
3560
3561 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3562 {
3563         return p2p_get_device(p2p, addr) != NULL;
3564 }
3565
3566
3567 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3568 {
3569         if (enabled) {
3570                 p2p_dbg(p2p, "Client discoverability enabled");
3571                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3572         } else {
3573                 p2p_dbg(p2p, "Client discoverability disabled");
3574                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3575         }
3576 }
3577
3578
3579 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3580                                               u32 duration2, u32 interval2)
3581 {
3582         struct wpabuf *req;
3583         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3584         u8 *len;
3585
3586         req = wpabuf_alloc(100);
3587         if (req == NULL)
3588                 return NULL;
3589
3590         if (duration1 || interval1) {
3591                 os_memset(&desc1, 0, sizeof(desc1));
3592                 desc1.count_type = 1;
3593                 desc1.duration = duration1;
3594                 desc1.interval = interval1;
3595                 ptr1 = &desc1;
3596
3597                 if (duration2 || interval2) {
3598                         os_memset(&desc2, 0, sizeof(desc2));
3599                         desc2.count_type = 2;
3600                         desc2.duration = duration2;
3601                         desc2.interval = interval2;
3602                         ptr2 = &desc2;
3603                 }
3604         }
3605
3606         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3607         len = p2p_buf_add_ie_hdr(req);
3608         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3609         p2p_buf_update_ie_hdr(req, len);
3610
3611         return req;
3612 }
3613
3614
3615 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3616                      const u8 *own_interface_addr, unsigned int freq,
3617                      u32 duration1, u32 interval1, u32 duration2,
3618                      u32 interval2)
3619 {
3620         struct wpabuf *req;
3621
3622         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3623                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3624                 "dur2=%u int2=%u",
3625                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3626                 freq, duration1, interval1, duration2, interval2);
3627
3628         req = p2p_build_presence_req(duration1, interval1, duration2,
3629                                      interval2);
3630         if (req == NULL)
3631                 return -1;
3632
3633         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3634         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3635                             go_interface_addr,
3636                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3637                 p2p_dbg(p2p, "Failed to send Action frame");
3638         }
3639         wpabuf_free(req);
3640
3641         return 0;
3642 }
3643
3644
3645 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3646                                                size_t noa_len, u8 dialog_token)
3647 {
3648         struct wpabuf *resp;
3649         u8 *len;
3650
3651         resp = wpabuf_alloc(100 + noa_len);
3652         if (resp == NULL)
3653                 return NULL;
3654
3655         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3656         len = p2p_buf_add_ie_hdr(resp);
3657         p2p_buf_add_status(resp, status);
3658         if (noa) {
3659                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3660                 wpabuf_put_le16(resp, noa_len);
3661                 wpabuf_put_data(resp, noa, noa_len);
3662         } else
3663                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3664         p2p_buf_update_ie_hdr(resp, len);
3665
3666         return resp;
3667 }
3668
3669
3670 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3671                                      const u8 *sa, const u8 *data, size_t len,
3672                                      int rx_freq)
3673 {
3674         struct p2p_message msg;
3675         u8 status;
3676         struct wpabuf *resp;
3677         size_t g;
3678         struct p2p_group *group = NULL;
3679         int parsed = 0;
3680         u8 noa[50];
3681         int noa_len;
3682
3683         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3684
3685         for (g = 0; g < p2p->num_groups; g++) {
3686                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3687                               ETH_ALEN) == 0) {
3688                         group = p2p->groups[g];
3689                         break;
3690                 }
3691         }
3692         if (group == NULL) {
3693                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3694                         MACSTR, MAC2STR(da));
3695                 return;
3696         }
3697
3698         if (p2p_parse(data, len, &msg) < 0) {
3699                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3700                 status = P2P_SC_FAIL_INVALID_PARAMS;
3701                 goto fail;
3702         }
3703         parsed = 1;
3704
3705         if (msg.noa == NULL) {
3706                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3707                 status = P2P_SC_FAIL_INVALID_PARAMS;
3708                 goto fail;
3709         }
3710
3711         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3712
3713 fail:
3714         if (p2p->cfg->get_noa)
3715                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3716                                             sizeof(noa));
3717         else
3718                 noa_len = -1;
3719         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3720                                        noa_len > 0 ? noa_len : 0,
3721                                        msg.dialog_token);
3722         if (parsed)
3723                 p2p_parse_free(&msg);
3724         if (resp == NULL)
3725                 return;
3726
3727         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3728         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3729                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3730                 p2p_dbg(p2p, "Failed to send Action frame");
3731         }
3732         wpabuf_free(resp);
3733 }
3734
3735
3736 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3737                                       const u8 *sa, const u8 *data, size_t len)
3738 {
3739         struct p2p_message msg;
3740
3741         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3742
3743         if (p2p_parse(data, len, &msg) < 0) {
3744                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3745                 return;
3746         }
3747
3748         if (msg.status == NULL || msg.noa == NULL) {
3749                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3750                 p2p_parse_free(&msg);
3751                 return;
3752         }
3753
3754         if (*msg.status) {
3755                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3756                         *msg.status);
3757                 p2p_parse_free(&msg);
3758                 return;
3759         }
3760
3761         p2p_dbg(p2p, "P2P Presence Request was accepted");
3762         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3763                     msg.noa, msg.noa_len);
3764         /* TODO: process NoA */
3765         p2p_parse_free(&msg);
3766 }
3767
3768
3769 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3770 {
3771         struct p2p_data *p2p = eloop_ctx;
3772
3773         if (p2p->ext_listen_interval) {
3774                 /* Schedule next extended listen timeout */
3775                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3776                                        p2p->ext_listen_interval_usec,
3777                                        p2p_ext_listen_timeout, p2p, NULL);
3778         }
3779
3780         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3781                 /*
3782                  * This should not really happen, but it looks like the Listen
3783                  * command may fail is something else (e.g., a scan) was
3784                  * running at an inconvenient time. As a workaround, allow new
3785                  * Extended Listen operation to be started.
3786                  */
3787                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3788                 p2p->ext_listen_only = 0;
3789                 p2p_set_state(p2p, P2P_IDLE);
3790         }
3791
3792         if (p2p->state != P2P_IDLE) {
3793                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3794                 return;
3795         }
3796
3797         p2p_dbg(p2p, "Extended Listen timeout");
3798         p2p->ext_listen_only = 1;
3799         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3800                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3801                 p2p->ext_listen_only = 0;
3802         }
3803 }
3804
3805
3806 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3807                    unsigned int interval)
3808 {
3809         if (period > 65535 || interval > 65535 || period > interval ||
3810             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3811                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3812                         period, interval);
3813                 return -1;
3814         }
3815
3816         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3817
3818         if (interval == 0) {
3819                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3820                 p2p->ext_listen_period = 0;
3821                 p2p->ext_listen_interval = 0;
3822                 return 0;
3823         }
3824
3825         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3826                 period, interval);
3827         p2p->ext_listen_period = period;
3828         p2p->ext_listen_interval = interval;
3829         p2p->ext_listen_interval_sec = interval / 1000;
3830         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3831
3832         eloop_register_timeout(p2p->ext_listen_interval_sec,
3833                                p2p->ext_listen_interval_usec,
3834                                p2p_ext_listen_timeout, p2p, NULL);
3835
3836         return 0;
3837 }
3838
3839
3840 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3841                       const u8 *ie, size_t ie_len)
3842 {
3843         struct p2p_message msg;
3844
3845         if (bssid == NULL || ie == NULL)
3846                 return;
3847
3848         os_memset(&msg, 0, sizeof(msg));
3849         if (p2p_parse_ies(ie, ie_len, &msg))
3850                 return;
3851         if (msg.minor_reason_code == NULL)
3852                 return;
3853
3854         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3855                 " reason_code=%u minor_reason_code=%u",
3856                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3857
3858         p2p_parse_free(&msg);
3859 }
3860
3861
3862 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3863                         const u8 *ie, size_t ie_len)
3864 {
3865         struct p2p_message msg;
3866
3867         if (bssid == NULL || ie == NULL)
3868                 return;
3869
3870         os_memset(&msg, 0, sizeof(msg));
3871         if (p2p_parse_ies(ie, ie_len, &msg))
3872                 return;
3873         if (msg.minor_reason_code == NULL)
3874                 return;
3875
3876         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3877                 " reason_code=%u minor_reason_code=%u",
3878                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3879
3880         p2p_parse_free(&msg);
3881 }
3882
3883
3884 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3885 {
3886         if (enabled) {
3887                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3888                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3889         } else {
3890                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3891                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3892         }
3893 }
3894
3895
3896 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3897 {
3898         if (p2p_channel_to_freq(reg_class, channel) < 0)
3899                 return -1;
3900
3901         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3902                 reg_class, channel);
3903         p2p->cfg->reg_class = reg_class;
3904         p2p->cfg->channel = channel;
3905
3906         return 0;
3907 }
3908
3909
3910 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3911 {
3912         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3913         if (postfix == NULL) {
3914                 p2p->cfg->ssid_postfix_len = 0;
3915                 return 0;
3916         }
3917         if (len > sizeof(p2p->cfg->ssid_postfix))
3918                 return -1;
3919         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3920         p2p->cfg->ssid_postfix_len = len;
3921         return 0;
3922 }
3923
3924
3925 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3926                          int cfg_op_channel)
3927 {
3928         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3929                 return -1;
3930
3931         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3932                 op_reg_class, op_channel);
3933         p2p->cfg->op_reg_class = op_reg_class;
3934         p2p->cfg->op_channel = op_channel;
3935         p2p->cfg->cfg_op_channel = cfg_op_channel;
3936         return 0;
3937 }
3938
3939
3940 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3941                       const struct p2p_channel *pref_chan)
3942 {
3943         struct p2p_channel *n;
3944
3945         if (pref_chan) {
3946                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3947                 if (n == NULL)
3948                         return -1;
3949                 os_memcpy(n, pref_chan,
3950                           num_pref_chan * sizeof(struct p2p_channel));
3951         } else
3952                 n = NULL;
3953
3954         os_free(p2p->cfg->pref_chan);
3955         p2p->cfg->pref_chan = n;
3956         p2p->cfg->num_pref_chan = num_pref_chan;
3957
3958         return 0;
3959 }
3960
3961
3962 int p2p_set_no_go_freq(struct p2p_data *p2p,
3963                        const struct wpa_freq_range_list *list)
3964 {
3965         struct wpa_freq_range *tmp;
3966
3967         if (list == NULL || list->num == 0) {
3968                 os_free(p2p->no_go_freq.range);
3969                 p2p->no_go_freq.range = NULL;
3970                 p2p->no_go_freq.num = 0;
3971                 return 0;
3972         }
3973
3974         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3975         if (tmp == NULL)
3976                 return -1;
3977         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3978         os_free(p2p->no_go_freq.range);
3979         p2p->no_go_freq.range = tmp;
3980         p2p->no_go_freq.num = list->num;
3981         p2p_dbg(p2p, "Updated no GO chan list");
3982
3983         return 0;
3984 }
3985
3986
3987 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3988                            u8 *iface_addr)
3989 {
3990         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3991         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3992                 return -1;
3993         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3994         return 0;
3995 }
3996
3997
3998 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3999                            u8 *dev_addr)
4000 {
4001         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4002         if (dev == NULL)
4003                 return -1;
4004         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4005         return 0;
4006 }
4007
4008
4009 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4010 {
4011         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4012         if (is_zero_ether_addr(p2p->peer_filter))
4013                 p2p_dbg(p2p, "Disable peer filter");
4014         else
4015                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4016                         MAC2STR(p2p->peer_filter));
4017 }
4018
4019
4020 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4021 {
4022         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4023         if (p2p->cross_connect == enabled)
4024                 return;
4025         p2p->cross_connect = enabled;
4026         /* TODO: may need to tear down any action group where we are GO(?) */
4027 }
4028
4029
4030 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4031 {
4032         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4033         if (dev == NULL)
4034                 return -1;
4035         if (dev->oper_freq <= 0)
4036                 return -1;
4037         return dev->oper_freq;
4038 }
4039
4040
4041 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4042 {
4043         p2p_dbg(p2p, "Intra BSS distribution %s",
4044                 enabled ? "enabled" : "disabled");
4045         p2p->cfg->p2p_intra_bss = enabled;
4046 }
4047
4048
4049 void p2p_update_channel_list(struct p2p_data *p2p,
4050                              const struct p2p_channels *chan,
4051                              const struct p2p_channels *cli_chan)
4052 {
4053         p2p_dbg(p2p, "Update channel list");
4054         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4055         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4056         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4057                   sizeof(struct p2p_channels));
4058         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4059 }
4060
4061
4062 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4063                     const u8 *src, const u8 *bssid, const u8 *buf,
4064                     size_t len, unsigned int wait_time)
4065 {
4066         if (p2p->p2p_scan_running) {
4067                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4068                 if (p2p->after_scan_tx) {
4069                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4070                         os_free(p2p->after_scan_tx);
4071                 }
4072                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4073                                                len);
4074                 if (p2p->after_scan_tx == NULL)
4075                         return -1;
4076                 p2p->after_scan_tx->freq = freq;
4077                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4078                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4079                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4080                 p2p->after_scan_tx->len = len;
4081                 p2p->after_scan_tx->wait_time = wait_time;
4082                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4083                 return 0;
4084         }
4085
4086         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4087                                      buf, len, wait_time);
4088 }
4089
4090
4091 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4092                            int freq_overall)
4093 {
4094         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4095                 freq_24, freq_5, freq_overall);
4096         p2p->best_freq_24 = freq_24;
4097         p2p->best_freq_5 = freq_5;
4098         p2p->best_freq_overall = freq_overall;
4099 }
4100
4101
4102 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4103 {
4104         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4105         p2p->own_freq_preference = freq;
4106 }
4107
4108
4109 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4110 {
4111         if (p2p == NULL || p2p->go_neg_peer == NULL)
4112                 return NULL;
4113         return p2p->go_neg_peer->info.p2p_device_addr;
4114 }
4115
4116
4117 const struct p2p_peer_info *
4118 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4119 {
4120         struct p2p_device *dev;
4121
4122         if (addr) {
4123                 dev = p2p_get_device(p2p, addr);
4124                 if (!dev)
4125                         return NULL;
4126
4127                 if (!next) {
4128                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4129                                 return NULL;
4130
4131                         return &dev->info;
4132                 } else {
4133                         do {
4134                                 dev = dl_list_first(&dev->list,
4135                                                     struct p2p_device,
4136                                                     list);
4137                                 if (&dev->list == &p2p->devices)
4138                                         return NULL;
4139                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4140                 }
4141         } else {
4142                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4143                 if (!dev)
4144                         return NULL;
4145                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4146                         dev = dl_list_first(&dev->list,
4147                                             struct p2p_device,
4148                                             list);
4149                         if (&dev->list == &p2p->devices)
4150                                 return NULL;
4151                 }
4152         }
4153
4154         return &dev->info;
4155 }
4156
4157
4158 int p2p_in_progress(struct p2p_data *p2p)
4159 {
4160         if (p2p == NULL)
4161                 return 0;
4162         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4163             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4164                 return 2;
4165         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4166 }
4167
4168
4169 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4170                             u8 client_timeout)
4171 {
4172         if (p2p) {
4173                 p2p->go_timeout = go_timeout;
4174                 p2p->client_timeout = client_timeout;
4175         }
4176 }
4177
4178
4179 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4180 {
4181         if (p2p && p2p->search_delay < delay)
4182                 p2p->search_delay = delay;
4183 }
4184
4185
4186 #ifdef CONFIG_WIFI_DISPLAY
4187
4188 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4189 {
4190         size_t g;
4191         struct p2p_group *group;
4192
4193         for (g = 0; g < p2p->num_groups; g++) {
4194                 group = p2p->groups[g];
4195                 p2p_group_update_ies(group);
4196         }
4197 }
4198
4199
4200 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4201 {
4202         wpabuf_free(p2p->wfd_ie_beacon);
4203         p2p->wfd_ie_beacon = ie;
4204         p2p_update_wfd_ie_groups(p2p);
4205         return 0;
4206 }
4207
4208
4209 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4210 {
4211         wpabuf_free(p2p->wfd_ie_probe_req);
4212         p2p->wfd_ie_probe_req = ie;
4213         return 0;
4214 }
4215
4216
4217 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4218 {
4219         wpabuf_free(p2p->wfd_ie_probe_resp);
4220         p2p->wfd_ie_probe_resp = ie;
4221         p2p_update_wfd_ie_groups(p2p);
4222         return 0;
4223 }
4224
4225
4226 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4227 {
4228         wpabuf_free(p2p->wfd_ie_assoc_req);
4229         p2p->wfd_ie_assoc_req = ie;
4230         return 0;
4231 }
4232
4233
4234 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4235 {
4236         wpabuf_free(p2p->wfd_ie_invitation);
4237         p2p->wfd_ie_invitation = ie;
4238         return 0;
4239 }
4240
4241
4242 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4243 {
4244         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4245         p2p->wfd_ie_prov_disc_req = ie;
4246         return 0;
4247 }
4248
4249
4250 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4251 {
4252         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4253         p2p->wfd_ie_prov_disc_resp = ie;
4254         return 0;
4255 }
4256
4257
4258 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4259 {
4260         wpabuf_free(p2p->wfd_ie_go_neg);
4261         p2p->wfd_ie_go_neg = ie;
4262         return 0;
4263 }
4264
4265
4266 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4267 {
4268         wpabuf_free(p2p->wfd_dev_info);
4269         if (elem) {
4270                 p2p->wfd_dev_info = wpabuf_dup(elem);
4271                 if (p2p->wfd_dev_info == NULL)
4272                         return -1;
4273         } else
4274                 p2p->wfd_dev_info = NULL;
4275
4276         return 0;
4277 }
4278
4279
4280 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4281 {
4282         wpabuf_free(p2p->wfd_assoc_bssid);
4283         if (elem) {
4284                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4285                 if (p2p->wfd_assoc_bssid == NULL)
4286                         return -1;
4287         } else
4288                 p2p->wfd_assoc_bssid = NULL;
4289
4290         return 0;
4291 }
4292
4293
4294 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4295                                   const struct wpabuf *elem)
4296 {
4297         wpabuf_free(p2p->wfd_coupled_sink_info);
4298         if (elem) {
4299                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4300                 if (p2p->wfd_coupled_sink_info == NULL)
4301                         return -1;
4302         } else
4303                 p2p->wfd_coupled_sink_info = NULL;
4304
4305         return 0;
4306 }
4307
4308 #endif /* CONFIG_WIFI_DISPLAY */
4309
4310
4311 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4312                      int max_disc_tu)
4313 {
4314         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4315                 return -1;
4316
4317         p2p->min_disc_int = min_disc_int;
4318         p2p->max_disc_int = max_disc_int;
4319         p2p->max_disc_tu = max_disc_tu;
4320         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4321                 min_disc_int, max_disc_int, max_disc_tu);
4322
4323         return 0;
4324 }
4325
4326
4327 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4328 {
4329         va_list ap;
4330         char buf[500];
4331
4332         if (!p2p->cfg->debug_print)
4333                 return;
4334
4335         va_start(ap, fmt);
4336         vsnprintf(buf, sizeof(buf), fmt, ap);
4337         buf[sizeof(buf) - 1] = '\0';
4338         va_end(ap);
4339         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4340 }
4341
4342
4343 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4344 {
4345         va_list ap;
4346         char buf[500];
4347
4348         if (!p2p->cfg->debug_print)
4349                 return;
4350
4351         va_start(ap, fmt);
4352         vsnprintf(buf, sizeof(buf), fmt, ap);
4353         buf[sizeof(buf) - 1] = '\0';
4354         va_end(ap);
4355         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4356 }
4357
4358
4359 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4360 {
4361         va_list ap;
4362         char buf[500];
4363
4364         if (!p2p->cfg->debug_print)
4365                 return;
4366
4367         va_start(ap, fmt);
4368         vsnprintf(buf, sizeof(buf), fmt, ap);
4369         buf[sizeof(buf) - 1] = '\0';
4370         va_end(ap);
4371         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4372 }