src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p_i.h"
  18 #include "p2p.h"
  19
  20
  21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  24                                      const u8 *sa, const u8 *data, size_t len,
  25                                      int rx_freq);
  26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  27                                       const u8 *sa, const u8 *data,
  28                                       size_t len);
  29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  31
  32
  33 /*
  34  * p2p_scan recovery timeout
  35  *
  36  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  37  * timeout for this to avoid hitting P2P timeout unnecessarily.
  38  */
  39 #define P2P_SCAN_TIMEOUT 35
  40
  41 /**
  42  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  43  * entries will be removed
  44  */
  45 #define P2P_PEER_EXPIRATION_AGE 300
  46
  47 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  48
  49 static void p2p_expire_peers(struct p2p_data *p2p)
  50 {
  51         struct p2p_device *dev, *n;
  52         struct os_time now;
  53         size_t i;
  54
  55         os_get_time(&now);
  56         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  57                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  58                         continue;
  59
  60                 if (p2p->cfg->go_connected &&
  61                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  62                                            dev->info.p2p_device_addr)) {
  63                         /*
  64                          * We are connected as a client to a group in which the
  65                          * peer is the GO, so do not expire the peer entry.
  66                          */
  67                         os_get_time(&dev->last_seen);
  68                         continue;
  69                 }
  70
  71                 for (i = 0; i < p2p->num_groups; i++) {
  72                         if (p2p_group_is_client_connected(
  73                                     p2p->groups[i], dev->info.p2p_device_addr))
  74                                 break;
  75                 }
  76                 if (i < p2p->num_groups) {
  77                         /*
  78                          * The peer is connected as a client in a group where
  79                          * we are the GO, so do not expire the peer entry.
  80                          */
  81                         os_get_time(&dev->last_seen);
  82                         continue;
  83                 }
  84
  85                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
  86                         "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
  87                 dl_list_del(&dev->list);
  88                 p2p_device_free(p2p, dev);
  89         }
  90 }
  91
  92
  93 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
  94 {
  95         struct p2p_data *p2p = eloop_ctx;
  96         p2p_expire_peers(p2p);
  97         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
  98                                p2p_expiration_timeout, p2p, NULL);
  99 }
 100
 101
 102 static const char * p2p_state_txt(int state)
 103 {
 104         switch (state) {
 105         case P2P_IDLE:
 106                 return "IDLE";
 107         case P2P_SEARCH:
 108                 return "SEARCH";
 109         case P2P_CONNECT:
 110                 return "CONNECT";
 111         case P2P_CONNECT_LISTEN:
 112                 return "CONNECT_LISTEN";
 113         case P2P_GO_NEG:
 114                 return "GO_NEG";
 115         case P2P_LISTEN_ONLY:
 116                 return "LISTEN_ONLY";
 117         case P2P_WAIT_PEER_CONNECT:
 118                 return "WAIT_PEER_CONNECT";
 119         case P2P_WAIT_PEER_IDLE:
 120                 return "WAIT_PEER_IDLE";
 121         case P2P_SD_DURING_FIND:
 122                 return "SD_DURING_FIND";
 123         case P2P_PROVISIONING:
 124                 return "PROVISIONING";
 125         case P2P_PD_DURING_FIND:
 126                 return "PD_DURING_FIND";
 127         case P2P_INVITE:
 128                 return "INVITE";
 129         case P2P_INVITE_LISTEN:
 130                 return "INVITE_LISTEN";
 131         case P2P_SEARCH_WHEN_READY:
 132                 return "SEARCH_WHEN_READY";
 133         case P2P_CONTINUE_SEARCH_WHEN_READY:
 134                 return "CONTINUE_SEARCH_WHEN_READY";
 135         default:
 136                 return "?";
 137         }
 138 }
 139
 140
 141 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 142 {
 143         struct p2p_device *dev = NULL;
 144
 145         if (!addr || !p2p)
 146                 return 0;
 147
 148         dev = p2p_get_device(p2p, addr);
 149         if (dev)
 150                 return dev->wps_prov_info;
 151         else
 152                 return 0;
 153 }
 154
 155
 156 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 157 {
 158         struct p2p_device *dev = NULL;
 159
 160         if (!addr || !p2p)
 161                 return;
 162
 163         dev = p2p_get_device(p2p, addr);
 164         if (dev)
 165                 dev->wps_prov_info = 0;
 166 }
 167
 168
 169 void p2p_set_state(struct p2p_data *p2p, int new_state)
 170 {
 171         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
 172                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 173         p2p->state = new_state;
 174 }
 175
 176
 177 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 178 {
 179         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 180                 "P2P: Set timeout (state=%s): %u.%06u sec",
 181                 p2p_state_txt(p2p->state), sec, usec);
 182         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 183         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 184 }
 185
 186
 187 void p2p_clear_timeout(struct p2p_data *p2p)
 188 {
 189         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
 190                 p2p_state_txt(p2p->state));
 191         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 192 }
 193
 194
 195 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 196                        int status)
 197 {
 198         struct p2p_go_neg_results res;
 199         p2p_clear_timeout(p2p);
 200         p2p_set_state(p2p, P2P_IDLE);
 201         if (p2p->go_neg_peer)
 202                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 203         p2p->go_neg_peer = NULL;
 204
 205         os_memset(&res, 0, sizeof(res));
 206         res.status = status;
 207         if (peer) {
 208                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 209                           ETH_ALEN);
 210                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 211                           ETH_ALEN);
 212         }
 213         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 214 }
 215
 216
 217 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 218 {
 219         unsigned int r, tu;
 220         int freq;
 221         struct wpabuf *ies;
 222
 223         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 224                 "P2P: Starting short listen state (state=%s)",
 225                 p2p_state_txt(p2p->state));
 226
 227         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 228                                    p2p->cfg->channel);
 229         if (freq < 0) {
 230                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 231                         "P2P: Unknown regulatory class/channel");
 232                 return;
 233         }
 234
 235         os_get_random((u8 *) &r, sizeof(r));
 236         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 237               p2p->min_disc_int) * 100;
 238         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 239                 tu = p2p->max_disc_tu;
 240         if (!dev_disc && tu < 100)
 241                 tu = 100; /* Need to wait in non-device discovery use cases */
 242         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 243                 tu = p2p->cfg->max_listen * 1000 / 1024;
 244
 245         if (tu == 0) {
 246                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip listen state "
 247                         "since duration was 0 TU");
 248                 p2p_set_timeout(p2p, 0, 0);
 249                 return;
 250         }
 251
 252         p2p->pending_listen_freq = freq;
 253         p2p->pending_listen_sec = 0;
 254         p2p->pending_listen_usec = 1024 * tu;
 255
 256         ies = p2p_build_probe_resp_ies(p2p);
 257         if (ies == NULL)
 258                 return;
 259
 260         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 261                     ies) < 0) {
 262                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 263                         "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         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 276                 "P2P: Going to listen(only) state");
 277
 278         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 279                                    p2p->cfg->channel);
 280         if (freq < 0) {
 281                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 282                         "P2P: Unknown regulatory class/channel");
 283                 return -1;
 284         }
 285
 286         p2p->pending_listen_freq = freq;
 287         p2p->pending_listen_sec = timeout / 1000;
 288         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 289
 290         if (p2p->p2p_scan_running) {
 291                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 292                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 293                                 "P2P: p2p_scan running - connect is already "
 294                                 "pending - skip listen");
 295                         return 0;
 296                 }
 297                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 298                         "P2P: p2p_scan running - delay start of listen state");
 299                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 300                 return 0;
 301         }
 302
 303         ies = p2p_build_probe_resp_ies(p2p);
 304         if (ies == NULL)
 305                 return -1;
 306
 307         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 308                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 309                         "P2P: Failed to start listen mode");
 310                 p2p->pending_listen_freq = 0;
 311                 wpabuf_free(ies);
 312                 return -1;
 313         }
 314         wpabuf_free(ies);
 315
 316         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 317
 318         return 0;
 319 }
 320
 321
 322 static void p2p_device_clear_reported(struct p2p_data *p2p)
 323 {
 324         struct p2p_device *dev;
 325         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 326                 dev->flags &= ~P2P_DEV_REPORTED;
 327 }
 328
 329
 330 /**
 331  * p2p_get_device - Fetch a peer entry
 332  * @p2p: P2P module context from p2p_init()
 333  * @addr: P2P Device Address of the peer
 334  * Returns: Pointer to the device entry or %NULL if not found
 335  */
 336 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 337 {
 338         struct p2p_device *dev;
 339         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 340                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 341                         return dev;
 342         }
 343         return NULL;
 344 }
 345
 346
 347 /**
 348  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 349  * @p2p: P2P module context from p2p_init()
 350  * @addr: P2P Interface Address of the peer
 351  * Returns: Pointer to the device entry or %NULL if not found
 352  */
 353 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 354                                              const u8 *addr)
 355 {
 356         struct p2p_device *dev;
 357         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 358                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 359                         return dev;
 360         }
 361         return NULL;
 362 }
 363
 364
 365 /**
 366  * p2p_create_device - Create a peer entry
 367  * @p2p: P2P module context from p2p_init()
 368  * @addr: P2P Device Address of the peer
 369  * Returns: Pointer to the device entry or %NULL on failure
 370  *
 371  * If there is already an entry for the peer, it will be returned instead of
 372  * creating a new one.
 373  */
 374 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 375                                              const u8 *addr)
 376 {
 377         struct p2p_device *dev, *oldest = NULL;
 378         size_t count = 0;
 379
 380         dev = p2p_get_device(p2p, addr);
 381         if (dev)
 382                 return dev;
 383
 384         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 385                 count++;
 386                 if (oldest == NULL ||
 387                     os_time_before(&dev->last_seen, &oldest->last_seen))
 388                         oldest = dev;
 389         }
 390         if (count + 1 > p2p->cfg->max_peers && oldest) {
 391                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 392                         "P2P: Remove oldest peer entry to make room for a new "
 393                         "peer");
 394                 dl_list_del(&oldest->list);
 395                 p2p_device_free(p2p, oldest);
 396         }
 397
 398         dev = os_zalloc(sizeof(*dev));
 399         if (dev == NULL)
 400                 return NULL;
 401         dl_list_add(&p2p->devices, &dev->list);
 402         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 403
 404         return dev;
 405 }
 406
 407
 408 static void p2p_copy_client_info(struct p2p_device *dev,
 409                                  struct p2p_client_info *cli)
 410 {
 411         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 412         dev->info.device_name[cli->dev_name_len] = '\0';
 413         dev->info.dev_capab = cli->dev_capab;
 414         dev->info.config_methods = cli->config_methods;
 415         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 416         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 417         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 418                   dev->info.wps_sec_dev_type_list_len);
 419 }
 420
 421
 422 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 423                                  const u8 *go_interface_addr, int freq,
 424                                  const u8 *gi, size_t gi_len)
 425 {
 426         struct p2p_group_info info;
 427         size_t c;
 428         struct p2p_device *dev;
 429
 430         if (gi == NULL)
 431                 return 0;
 432
 433         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 434                 return -1;
 435
 436         /*
 437          * Clear old data for this group; if the devices are still in the
 438          * group, the information will be restored in the loop following this.
 439          */
 440         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 441                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 442                               ETH_ALEN) == 0) {
 443                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 444                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 445                 }
 446         }
 447
 448         for (c = 0; c < info.num_clients; c++) {
 449                 struct p2p_client_info *cli = &info.client[c];
 450                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 451                               ETH_ALEN) == 0)
 452                         continue; /* ignore our own entry */
 453                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 454                 if (dev) {
 455                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 456                                           P2P_DEV_PROBE_REQ_ONLY)) {
 457                                 /*
 458                                  * Update information since we have not
 459                                  * received this directly from the client.
 460                                  */
 461                                 p2p_copy_client_info(dev, cli);
 462                         } else {
 463                                 /*
 464                                  * Need to update P2P Client Discoverability
 465                                  * flag since it is valid only in P2P Group
 466                                  * Info attribute.
 467                                  */
 468                                 dev->info.dev_capab &=
 469                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 470                                 dev->info.dev_capab |=
 471                                         cli->dev_capab &
 472                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 473                         }
 474                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 475                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 476                         }
 477                 } else {
 478                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 479                         if (dev == NULL)
 480                                 continue;
 481                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 482                         p2p_copy_client_info(dev, cli);
 483                         dev->oper_freq = freq;
 484                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 485                                             dev->info.p2p_device_addr,
 486                                             &dev->info, 1);
 487                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 488                 }
 489
 490                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 491                           ETH_ALEN);
 492                 os_get_time(&dev->last_seen);
 493                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 494                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 495                           ETH_ALEN);
 496         }
 497
 498         return 0;
 499 }
 500
 501
 502 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
 503                               const struct p2p_message *msg)
 504 {
 505         os_memcpy(dev->info.device_name, msg->device_name,
 506                   sizeof(dev->info.device_name));
 507
 508         if (msg->manufacturer &&
 509             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 510                 os_memset(dev->info.manufacturer, 0,
 511                           sizeof(dev->info.manufacturer));
 512                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 513                           msg->manufacturer_len);
 514         }
 515
 516         if (msg->model_name &&
 517             msg->model_name_len < sizeof(dev->info.model_name)) {
 518                 os_memset(dev->info.model_name, 0,
 519                           sizeof(dev->info.model_name));
 520                 os_memcpy(dev->info.model_name, msg->model_name,
 521                           msg->model_name_len);
 522         }
 523
 524         if (msg->model_number &&
 525             msg->model_number_len < sizeof(dev->info.model_number)) {
 526                 os_memset(dev->info.model_number, 0,
 527                           sizeof(dev->info.model_number));
 528                 os_memcpy(dev->info.model_number, msg->model_number,
 529                           msg->model_number_len);
 530         }
 531
 532         if (msg->serial_number &&
 533             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 534                 os_memset(dev->info.serial_number, 0,
 535                           sizeof(dev->info.serial_number));
 536                 os_memcpy(dev->info.serial_number, msg->serial_number,
 537                           msg->serial_number_len);
 538         }
 539
 540         if (msg->pri_dev_type)
 541                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 542                           sizeof(dev->info.pri_dev_type));
 543         else if (msg->wps_pri_dev_type)
 544                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 545                           sizeof(dev->info.pri_dev_type));
 546
 547         if (msg->wps_sec_dev_type_list) {
 548                 os_memcpy(dev->info.wps_sec_dev_type_list,
 549                           msg->wps_sec_dev_type_list,
 550                           msg->wps_sec_dev_type_list_len);
 551                 dev->info.wps_sec_dev_type_list_len =
 552                         msg->wps_sec_dev_type_list_len;
 553         }
 554
 555         if (msg->capability) {
 556                 /*
 557                  * P2P Client Discoverability bit is reserved in all frames
 558                  * that use this function, so do not change its value here.
 559                  */
 560                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 561                 dev->info.dev_capab |= msg->capability[0] &
 562                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 563                 dev->info.group_capab = msg->capability[1];
 564         }
 565
 566         if (msg->ext_listen_timing) {
 567                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 568                 dev->ext_listen_interval =
 569                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 570         }
 571
 572         if (!probe_req) {
 573                 dev->info.config_methods = msg->config_methods ?
 574                         msg->config_methods : msg->wps_config_methods;
 575         }
 576 }
 577
 578
 579 /**
 580  * p2p_add_device - Add peer entries based on scan results or P2P frames
 581  * @p2p: P2P module context from p2p_init()
 582  * @addr: Source address of Beacon or Probe Response frame (may be either
 583  *      P2P Device Address or P2P Interface Address)
 584  * @level: Signal level (signal strength of the received frame from the peer)
 585  * @freq: Frequency on which the Beacon or Probe Response frame was received
 586  * @age_ms: Age of the information in milliseconds
 587  * @ies: IEs from the Beacon or Probe Response frame
 588  * @ies_len: Length of ies buffer in octets
 589  * @scan_res: Whether this was based on scan results
 590  * Returns: 0 on success, -1 on failure
 591  *
 592  * If the scan result is for a GO, the clients in the group will also be added
 593  * to the peer table. This function can also be used with some other frames
 594  * like Provision Discovery Request that contains P2P Capability and P2P Device
 595  * Info attributes.
 596  */
 597 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 598                    unsigned int age_ms, int level, const u8 *ies,
 599                    size_t ies_len, int scan_res)
 600 {
 601         struct p2p_device *dev;
 602         struct p2p_message msg;
 603         const u8 *p2p_dev_addr;
 604         int i;
 605         struct os_time time_now, time_tmp_age, entry_ts;
 606
 607         os_memset(&msg, 0, sizeof(msg));
 608         if (p2p_parse_ies(ies, ies_len, &msg)) {
 609                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 610                         "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                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 621                         "P2P: Ignore scan data without P2P Device Info or "
 622                         "P2P Device Id");
 623                 p2p_parse_free(&msg);
 624                 return -1;
 625         }
 626
 627         if (!is_zero_ether_addr(p2p->peer_filter) &&
 628             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 629                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
 630                         "filter for " MACSTR " due to peer filter",
 631                         MAC2STR(p2p_dev_addr));
 632                 return 0;
 633         }
 634
 635         dev = p2p_create_device(p2p, p2p_dev_addr);
 636         if (dev == NULL) {
 637                 p2p_parse_free(&msg);
 638                 return -1;
 639         }
 640
 641         os_get_time(&time_now);
 642         time_tmp_age.sec = age_ms / 1000;
 643         time_tmp_age.usec = (age_ms % 1000) * 1000;
 644         os_time_sub(&time_now, &time_tmp_age, &entry_ts);
 645
 646         /*
 647          * Update the device entry only if the new peer
 648          * entry is newer than the one previously stored.
 649          */
 650         if (dev->last_seen.usec > 0 &&
 651             os_time_before(&entry_ts, &dev->last_seen))
 652                 return -1;
 653
 654         os_memcpy(&dev->last_seen, &entry_ts, sizeof(struct os_time));
 655
 656         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 657
 658         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 659                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 660         if (msg.ssid &&
 661             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 662              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 663              != 0)) {
 664                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 665                 dev->oper_ssid_len = msg.ssid[1];
 666         }
 667
 668         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 669             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 670                 int ds_freq;
 671                 if (*msg.ds_params == 14)
 672                         ds_freq = 2484;
 673                 else
 674                         ds_freq = 2407 + *msg.ds_params * 5;
 675                 if (freq != ds_freq) {
 676                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 677                                 "P2P: Update Listen frequency based on DS "
 678                                 "Parameter Set IE: %d -> %d MHz",
 679                                 freq, ds_freq);
 680                         freq = ds_freq;
 681                 }
 682         }
 683
 684         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 685                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 686                         "P2P: Update Listen frequency based on scan "
 687                         "results (" MACSTR " %d -> %d MHz (DS param %d)",
 688                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 689                         freq, msg.ds_params ? *msg.ds_params : -1);
 690         }
 691         if (scan_res) {
 692                 dev->listen_freq = freq;
 693                 if (msg.group_info)
 694                         dev->oper_freq = freq;
 695         }
 696         dev->info.level = level;
 697
 698         p2p_copy_wps_info(dev, 0, &msg);
 699
 700         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 701                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 702                 dev->info.wps_vendor_ext[i] = NULL;
 703         }
 704
 705         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 706                 if (msg.wps_vendor_ext[i] == NULL)
 707                         break;
 708                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 709                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 710                 if (dev->info.wps_vendor_ext[i] == NULL)
 711                         break;
 712         }
 713
 714         if (msg.wfd_subelems) {
 715                 wpabuf_free(dev->info.wfd_subelems);
 716                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 717         }
 718
 719         if (scan_res) {
 720                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 721                                       msg.group_info, msg.group_info_len);
 722         }
 723
 724         p2p_parse_free(&msg);
 725
 726         if (p2p_pending_sd_req(p2p, dev))
 727                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 728
 729         if (dev->flags & P2P_DEV_REPORTED)
 730                 return 0;
 731
 732         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 733                 "P2P: Peer found with Listen frequency %d MHz", freq);
 734         if (dev->flags & P2P_DEV_USER_REJECTED) {
 735                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 736                         "P2P: Do not report rejected device");
 737                 return 0;
 738         }
 739
 740         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 741                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 742         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 743
 744         return 0;
 745 }
 746
 747
 748 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 749 {
 750         int i;
 751
 752         if (p2p->go_neg_peer == dev) {
 753                 /*
 754                  * If GO Negotiation is in progress, report that it has failed.
 755                  */
 756                 p2p_go_neg_failed(p2p, dev, -1);
 757                 p2p->go_neg_peer = NULL;
 758         }
 759         if (p2p->invite_peer == dev)
 760                 p2p->invite_peer = NULL;
 761         if (p2p->sd_peer == dev)
 762                 p2p->sd_peer = NULL;
 763         if (p2p->pending_client_disc_go == dev)
 764                 p2p->pending_client_disc_go = NULL;
 765
 766         /* dev_lost() device, but only if it was previously dev_found() */
 767         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 768                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 769                                    dev->info.p2p_device_addr);
 770
 771         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 772                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 773                 dev->info.wps_vendor_ext[i] = NULL;
 774         }
 775
 776         wpabuf_free(dev->info.wfd_subelems);
 777
 778         os_free(dev);
 779 }
 780
 781
 782 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 783 {
 784         struct p2p_channels *c;
 785         struct p2p_reg_class *cla;
 786         size_t cl, ch;
 787         int found = 0;
 788         u8 reg_class;
 789         u8 channel;
 790         int freq;
 791
 792         c = &p2p->cfg->channels;
 793         for (cl = 0; cl < c->reg_classes; cl++) {
 794                 cla = &c->reg_class[cl];
 795                 if (cla->reg_class != p2p->last_prog_scan_class)
 796                         continue;
 797                 for (ch = 0; ch < cla->channels; ch++) {
 798                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 799                                 found = 1;
 800                                 break;
 801                         }
 802                 }
 803                 if (found)
 804                         break;
 805         }
 806
 807         if (!found) {
 808                 /* Start from beginning */
 809                 reg_class = c->reg_class[0].reg_class;
 810                 channel = c->reg_class[0].channel[0];
 811         } else {
 812                 /* Pick the next channel */
 813                 ch++;
 814                 if (ch == cla->channels) {
 815                         cl++;
 816                         if (cl == c->reg_classes)
 817                                 cl = 0;
 818                         ch = 0;
 819                 }
 820                 reg_class = c->reg_class[cl].reg_class;
 821                 channel = c->reg_class[cl].channel[ch];
 822         }
 823
 824         freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
 825         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
 826                 "channel: reg_class %u channel %u -> %d MHz",
 827                 reg_class, channel, freq);
 828         p2p->last_prog_scan_class = reg_class;
 829         p2p->last_prog_scan_chan = channel;
 830
 831         if (freq == 2412 || freq == 2437 || freq == 2462)
 832                 return 0; /* No need to add social channels */
 833         return freq;
 834 }
 835
 836
 837 static void p2p_search(struct p2p_data *p2p)
 838 {
 839         int freq = 0;
 840         enum p2p_scan_type type;
 841         u16 pw_id = DEV_PW_DEFAULT;
 842         int res;
 843
 844         if (p2p->drv_in_listen) {
 845                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
 846                         "in Listen state - wait for it to end before "
 847                         "continuing");
 848                 return;
 849         }
 850         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 851
 852         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 853             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 854                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 855                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 856                         "(+ freq %u)", freq);
 857         } else {
 858                 type = P2P_SCAN_SOCIAL;
 859                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
 860         }
 861
 862         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 863                                  p2p->num_req_dev_types, p2p->req_dev_types,
 864                                  p2p->find_dev_id, pw_id);
 865         if (res < 0) {
 866                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 867                         "P2P: Scan request failed");
 868                 p2p_continue_find(p2p);
 869         } else if (res == 1) {
 870                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
 871                         "p2p_scan at this point - will try again after "
 872                         "previous scan completes");
 873                 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
 874         } else {
 875                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 876                 p2p->p2p_scan_running = 1;
 877                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 878                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 879                                        p2p, NULL);
 880         }
 881 }
 882
 883
 884 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 885 {
 886         struct p2p_data *p2p = eloop_ctx;
 887         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
 888         p2p_stop_find(p2p);
 889 }
 890
 891
 892 static int p2p_run_after_scan(struct p2p_data *p2p)
 893 {
 894         struct p2p_device *dev;
 895         enum p2p_after_scan op;
 896
 897         if (p2p->after_scan_tx) {
 898                 /* TODO: schedule p2p_run_after_scan to be called from TX
 899                  * status callback(?) */
 900                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
 901                         "Action frame at p2p_scan completion");
 902                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 903                                       p2p->after_scan_tx->freq,
 904                                       p2p->after_scan_tx->dst,
 905                                       p2p->after_scan_tx->src,
 906                                       p2p->after_scan_tx->bssid,
 907                                       (u8 *) (p2p->after_scan_tx + 1),
 908                                       p2p->after_scan_tx->len,
 909                                       p2p->after_scan_tx->wait_time);
 910                 os_free(p2p->after_scan_tx);
 911                 p2p->after_scan_tx = NULL;
 912                 return 1;
 913         }
 914
 915         op = p2p->start_after_scan;
 916         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 917         switch (op) {
 918         case P2P_AFTER_SCAN_NOTHING:
 919                 break;
 920         case P2P_AFTER_SCAN_LISTEN:
 921                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 922                         "requested Listen state");
 923                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 924                            p2p->pending_listen_usec / 1000);
 925                 return 1;
 926         case P2P_AFTER_SCAN_CONNECT:
 927                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 928                         "requested connect with " MACSTR,
 929                         MAC2STR(p2p->after_scan_peer));
 930                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 931                 if (dev == NULL) {
 932                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
 933                                 "known anymore");
 934                         break;
 935                 }
 936                 p2p_connect_send(p2p, dev);
 937                 return 1;
 938         }
 939
 940         return 0;
 941 }
 942
 943
 944 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 945 {
 946         struct p2p_data *p2p = eloop_ctx;
 947         int running;
 948         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
 949                 "(running=%d)", p2p->p2p_scan_running);
 950         running = p2p->p2p_scan_running;
 951         /* Make sure we recover from missed scan results callback */
 952         p2p->p2p_scan_running = 0;
 953
 954         if (running)
 955                 p2p_run_after_scan(p2p);
 956 }
 957
 958
 959 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 960 {
 961         p2p->num_req_dev_types = 0;
 962         os_free(p2p->req_dev_types);
 963         p2p->req_dev_types = NULL;
 964 }
 965
 966
 967 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 968              enum p2p_discovery_type type,
 969              unsigned int num_req_dev_types, const u8 *req_dev_types,
 970              const u8 *dev_id, unsigned int search_delay)
 971 {
 972         int res;
 973
 974         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
 975                 type);
 976         if (p2p->p2p_scan_running) {
 977                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
 978                         "already running");
 979         }
 980
 981         p2p_free_req_dev_types(p2p);
 982         if (req_dev_types && num_req_dev_types) {
 983                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 984                                                WPS_DEV_TYPE_LEN);
 985                 if (p2p->req_dev_types == NULL)
 986                         return -1;
 987                 os_memcpy(p2p->req_dev_types, req_dev_types,
 988                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 989                 p2p->num_req_dev_types = num_req_dev_types;
 990         }
 991
 992         if (dev_id) {
 993                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
 994                 p2p->find_dev_id = p2p->find_dev_id_buf;
 995         } else
 996                 p2p->find_dev_id = NULL;
 997
 998         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 999         p2p_clear_timeout(p2p);
1000         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1001         p2p->find_type = type;
1002         p2p_device_clear_reported(p2p);
1003         p2p_set_state(p2p, P2P_SEARCH);
1004         p2p->search_delay = search_delay;
1005         p2p->in_search_delay = 0;
1006         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1007         p2p->last_p2p_find_timeout = timeout;
1008         if (timeout)
1009                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1010                                        p2p, NULL);
1011         switch (type) {
1012         case P2P_FIND_START_WITH_FULL:
1013         case P2P_FIND_PROGRESSIVE:
1014                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1015                                          p2p->num_req_dev_types,
1016                                          p2p->req_dev_types, dev_id,
1017                                          DEV_PW_DEFAULT);
1018                 break;
1019         case P2P_FIND_ONLY_SOCIAL:
1020                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1021                                          p2p->num_req_dev_types,
1022                                          p2p->req_dev_types, dev_id,
1023                                          DEV_PW_DEFAULT);
1024                 break;
1025         default:
1026                 return -1;
1027         }
1028
1029         if (res == 0) {
1030                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
1031                 p2p->p2p_scan_running = 1;
1032                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1033                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1034                                        p2p, NULL);
1035         } else if (res == 1) {
1036                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
1037                         "p2p_scan at this point - will try again after "
1038                         "previous scan completes");
1039                 res = 0;
1040                 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1041                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1042         } else {
1043                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
1044                         "p2p_scan");
1045                 p2p_set_state(p2p, P2P_IDLE);
1046                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1047         }
1048
1049         return res;
1050 }
1051
1052
1053 int p2p_other_scan_completed(struct p2p_data *p2p)
1054 {
1055         if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1056                 p2p_set_state(p2p, P2P_SEARCH);
1057                 p2p_search(p2p);
1058                 return 1;
1059         }
1060         if (p2p->state != P2P_SEARCH_WHEN_READY)
1061                 return 0;
1062         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
1063                 "now that previous scan was completed");
1064         if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1065                      p2p->num_req_dev_types, p2p->req_dev_types,
1066                      p2p->find_dev_id, p2p->search_delay) < 0)
1067                 return 0;
1068         return 1;
1069 }
1070
1071
1072 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1073 {
1074         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
1075         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1076         p2p_clear_timeout(p2p);
1077         if (p2p->state == P2P_SEARCH)
1078                 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1079         p2p_set_state(p2p, P2P_IDLE);
1080         p2p_free_req_dev_types(p2p);
1081         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1082         p2p->go_neg_peer = NULL;
1083         p2p->sd_peer = NULL;
1084         p2p->invite_peer = NULL;
1085         p2p_stop_listen_for_freq(p2p, freq);
1086 }
1087
1088
1089 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1090 {
1091         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1092                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1093                         "since we are on correct channel for response");
1094                 return;
1095         }
1096         if (p2p->in_listen) {
1097                 p2p->in_listen = 0;
1098                 p2p_clear_timeout(p2p);
1099         }
1100         if (p2p->drv_in_listen) {
1101                 /*
1102                  * The driver may not deliver callback to p2p_listen_end()
1103                  * when the operation gets canceled, so clear the internal
1104                  * variable that is tracking driver state.
1105                  */
1106                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1107                         "drv_in_listen (%d)", p2p->drv_in_listen);
1108                 p2p->drv_in_listen = 0;
1109         }
1110         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1111 }
1112
1113
1114 void p2p_stop_find(struct p2p_data *p2p)
1115 {
1116         p2p_stop_find_for_freq(p2p, 0);
1117 }
1118
1119
1120 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1121                                     unsigned int force_freq,
1122                                     unsigned int pref_freq)
1123 {
1124         u8 op_class, op_channel;
1125         unsigned int freq = force_freq ? force_freq : pref_freq;
1126
1127         if (p2p_freq_to_channel(p2p->cfg->country, freq,
1128                                 &op_class, &op_channel) < 0) {
1129                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1130                         "P2P: Unsupported frequency %u MHz", freq);
1131                 return -1;
1132         }
1133
1134         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) {
1135                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1136                         "P2P: Frequency %u MHz (oper_class %u channel %u) not "
1137                         "allowed for P2P", freq, op_class, op_channel);
1138                 return -1;
1139         }
1140
1141         p2p->op_reg_class = op_class;
1142         p2p->op_channel = op_channel;
1143
1144         if (force_freq) {
1145                 p2p->channels.reg_classes = 1;
1146                 p2p->channels.reg_class[0].channels = 1;
1147                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1148                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1149         } else {
1150                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1151                           sizeof(struct p2p_channels));
1152         }
1153
1154         return 0;
1155 }
1156
1157
1158 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1159 {
1160         u8 op_class, op_channel;
1161
1162         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1163             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1164             p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall,
1165                                 &op_class, &op_channel) == 0) {
1166                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best "
1167                         "overall channel as operating channel preference");
1168                 p2p->op_reg_class = op_class;
1169                 p2p->op_channel = op_channel;
1170         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1171                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1172                    p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5,
1173                                        &op_class, &op_channel) == 0) {
1174                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz "
1175                         "channel as operating channel preference");
1176                 p2p->op_reg_class = op_class;
1177                 p2p->op_channel = op_channel;
1178         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1179                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1180                    p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24,
1181                                        &op_class, &op_channel) == 0) {
1182                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 "
1183                         "GHz channel as operating channel preference");
1184                 p2p->op_reg_class = op_class;
1185                 p2p->op_channel = op_channel;
1186         } else {
1187                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1188                 p2p->op_channel = p2p->cfg->op_channel;
1189         }
1190
1191         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1192                   sizeof(struct p2p_channels));
1193 }
1194
1195
1196 /**
1197  * p2p_prepare_channel - Select operating channel for GO Negotiation
1198  * @p2p: P2P module context from p2p_init()
1199  * @dev: Selected peer device
1200  * @force_freq: Forced frequency in MHz or 0 if not forced
1201  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1202  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1203  *
1204  * This function is used to do initial operating channel selection for GO
1205  * Negotiation prior to having received peer information. The selected channel
1206  * may be further optimized in p2p_reselect_channel() once the peer information
1207  * is available.
1208  */
1209 static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1210                                unsigned int force_freq, unsigned int pref_freq)
1211 {
1212         if (force_freq || pref_freq) {
1213                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0)
1214                         return -1;
1215         } else {
1216                 p2p_prepare_channel_best(p2p);
1217         }
1218         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1219                 "P2P: Own preference for operation channel: "
1220                 "Operating Class %u Channel %u%s",
1221                 p2p->op_reg_class, p2p->op_channel,
1222                 force_freq ? " (forced)" : "");
1223
1224         if (force_freq)
1225                 dev->flags |= P2P_DEV_FORCE_FREQ;
1226         else
1227                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1228
1229         return 0;
1230 }
1231
1232
1233 static void p2p_set_dev_persistent(struct p2p_device *dev,
1234                                    int persistent_group)
1235 {
1236         switch (persistent_group) {
1237         case 0:
1238                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1239                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1240                 break;
1241         case 1:
1242                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1243                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1244                 break;
1245         case 2:
1246                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1247                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1248                 break;
1249         }
1250 }
1251
1252
1253 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1254                 enum p2p_wps_method wps_method,
1255                 int go_intent, const u8 *own_interface_addr,
1256                 unsigned int force_freq, int persistent_group,
1257                 const u8 *force_ssid, size_t force_ssid_len,
1258                 int pd_before_go_neg, unsigned int pref_freq)
1259 {
1260         struct p2p_device *dev;
1261
1262         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1263                 "P2P: Request to start group negotiation - peer=" MACSTR
1264                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1265                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1266                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1267                 wps_method, persistent_group, pd_before_go_neg);
1268
1269         dev = p2p_get_device(p2p, peer_addr);
1270         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1271                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1272                         "P2P: Cannot connect to unknown P2P Device " MACSTR,
1273                         MAC2STR(peer_addr));
1274                 return -1;
1275         }
1276
1277         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1278                 return -1;
1279
1280         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1281                 if (!(dev->info.dev_capab &
1282                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1283                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1284                                 "P2P: Cannot connect to P2P Device " MACSTR
1285                                 " that is in a group and is not discoverable",
1286                                 MAC2STR(peer_addr));
1287                         return -1;
1288                 }
1289                 if (dev->oper_freq <= 0) {
1290                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1291                                 "P2P: Cannot connect to P2P Device " MACSTR
1292                                 " with incomplete information",
1293                                 MAC2STR(peer_addr));
1294                         return -1;
1295                 }
1296
1297                 /*
1298                  * First, try to connect directly. If the peer does not
1299                  * acknowledge frames, assume it is sleeping and use device
1300                  * discoverability via the GO at that point.
1301                  */
1302         }
1303
1304         p2p->ssid_set = 0;
1305         if (force_ssid) {
1306                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1307                                   force_ssid, force_ssid_len);
1308                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1309                 p2p->ssid_len = force_ssid_len;
1310                 p2p->ssid_set = 1;
1311         }
1312
1313         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1314         dev->flags &= ~P2P_DEV_USER_REJECTED;
1315         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1316         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1317         if (pd_before_go_neg)
1318                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1319         else
1320                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1321         dev->connect_reqs = 0;
1322         dev->go_neg_req_sent = 0;
1323         dev->go_state = UNKNOWN_GO;
1324         p2p_set_dev_persistent(dev, persistent_group);
1325         p2p->go_intent = go_intent;
1326         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1327
1328         if (p2p->state != P2P_IDLE)
1329                 p2p_stop_find(p2p);
1330
1331         if (p2p->after_scan_tx) {
1332                 /*
1333                  * We need to drop the pending frame to avoid issues with the
1334                  * new GO Negotiation, e.g., when the pending frame was from a
1335                  * previous attempt at starting a GO Negotiation.
1336                  */
1337                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1338                         "previous pending Action frame TX that was waiting "
1339                         "for p2p_scan completion");
1340                 os_free(p2p->after_scan_tx);
1341                 p2p->after_scan_tx = NULL;
1342         }
1343
1344         dev->wps_method = wps_method;
1345         dev->status = P2P_SC_SUCCESS;
1346
1347         if (p2p->p2p_scan_running) {
1348                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1349                         "P2P: p2p_scan running - delay connect send");
1350                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1351                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1352                 return 0;
1353         }
1354         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1355
1356         return p2p_connect_send(p2p, dev);
1357 }
1358
1359
1360 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1361                   enum p2p_wps_method wps_method,
1362                   int go_intent, const u8 *own_interface_addr,
1363                   unsigned int force_freq, int persistent_group,
1364                   const u8 *force_ssid, size_t force_ssid_len,
1365                   unsigned int pref_freq)
1366 {
1367         struct p2p_device *dev;
1368
1369         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1370                 "P2P: Request to authorize group negotiation - peer=" MACSTR
1371                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1372                 " wps_method=%d  persistent_group=%d",
1373                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1374                 wps_method, persistent_group);
1375
1376         dev = p2p_get_device(p2p, peer_addr);
1377         if (dev == NULL) {
1378                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1379                         "P2P: Cannot authorize unknown P2P Device " MACSTR,
1380                         MAC2STR(peer_addr));
1381                 return -1;
1382         }
1383
1384         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1385                 return -1;
1386
1387         p2p->ssid_set = 0;
1388         if (force_ssid) {
1389                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1390                                   force_ssid, force_ssid_len);
1391                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1392                 p2p->ssid_len = force_ssid_len;
1393                 p2p->ssid_set = 1;
1394         }
1395
1396         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1397         dev->flags &= ~P2P_DEV_USER_REJECTED;
1398         dev->go_neg_req_sent = 0;
1399         dev->go_state = UNKNOWN_GO;
1400         p2p_set_dev_persistent(dev, persistent_group);
1401         p2p->go_intent = go_intent;
1402         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1403
1404         dev->wps_method = wps_method;
1405         dev->status = P2P_SC_SUCCESS;
1406
1407         return 0;
1408 }
1409
1410
1411 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1412                       struct p2p_device *dev, struct p2p_message *msg)
1413 {
1414         os_get_time(&dev->last_seen);
1415
1416         p2p_copy_wps_info(dev, 0, msg);
1417
1418         if (msg->listen_channel) {
1419                 int freq;
1420                 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1421                                            msg->listen_channel[3],
1422                                            msg->listen_channel[4]);
1423                 if (freq < 0) {
1424                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1425                                 "P2P: Unknown peer Listen channel: "
1426                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1427                                 msg->listen_channel[0],
1428                                 msg->listen_channel[1],
1429                                 msg->listen_channel[2],
1430                                 msg->listen_channel[3],
1431                                 msg->listen_channel[4]);
1432                 } else {
1433                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1434                                 "peer " MACSTR " Listen channel: %u -> %u MHz",
1435                                 MAC2STR(dev->info.p2p_device_addr),
1436                                 dev->listen_freq, freq);
1437                         dev->listen_freq = freq;
1438                 }
1439         }
1440
1441         if (msg->wfd_subelems) {
1442                 wpabuf_free(dev->info.wfd_subelems);
1443                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1444         }
1445
1446         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1447                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1448                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1449                         "P2P: Completed device entry based on data from "
1450                         "GO Negotiation Request");
1451         } else {
1452                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1453                         "P2P: Created device entry based on GO Neg Req: "
1454                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1455                         "listen_freq=%d",
1456                         MAC2STR(dev->info.p2p_device_addr),
1457                         dev->info.dev_capab, dev->info.group_capab,
1458                         dev->info.device_name, dev->listen_freq);
1459         }
1460
1461         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1462
1463         if (dev->flags & P2P_DEV_USER_REJECTED) {
1464                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1465                         "P2P: Do not report rejected device");
1466                 return;
1467         }
1468
1469         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1470                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1471         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1472 }
1473
1474
1475 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1476 {
1477         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1478         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1479         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1480                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1481         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1482 }
1483
1484
1485 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1486 {
1487         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1488         p2p_random(params->passphrase, 8);
1489         return 0;
1490 }
1491
1492
1493 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1494 {
1495         struct p2p_go_neg_results res;
1496         int go = peer->go_state == LOCAL_GO;
1497         struct p2p_channels intersection;
1498         int freqs;
1499         size_t i, j;
1500
1501         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1502                 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1503                 "GO)", MAC2STR(peer->info.p2p_device_addr),
1504                 go ? "local end" : "peer");
1505
1506         os_memset(&res, 0, sizeof(res));
1507         res.role_go = go;
1508         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1509         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1510         res.wps_method = peer->wps_method;
1511         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1512                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1513                         res.persistent_group = 2;
1514                 else
1515                         res.persistent_group = 1;
1516         }
1517
1518         if (go) {
1519                 /* Setup AP mode for WPS provisioning */
1520                 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1521                                                p2p->op_reg_class,
1522                                                p2p->op_channel);
1523                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1524                 res.ssid_len = p2p->ssid_len;
1525                 p2p_random(res.passphrase, 8);
1526         } else {
1527                 res.freq = peer->oper_freq;
1528                 if (p2p->ssid_len) {
1529                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1530                         res.ssid_len = p2p->ssid_len;
1531                 }
1532         }
1533
1534         p2p_channels_intersect(&p2p->channels, &peer->channels,
1535                                &intersection);
1536         freqs = 0;
1537         for (i = 0; i < intersection.reg_classes; i++) {
1538                 struct p2p_reg_class *c = &intersection.reg_class[i];
1539                 if (freqs + 1 == P2P_MAX_CHANNELS)
1540                         break;
1541                 for (j = 0; j < c->channels; j++) {
1542                         int freq;
1543                         if (freqs + 1 == P2P_MAX_CHANNELS)
1544                                 break;
1545                         freq = p2p_channel_to_freq(peer->country, c->reg_class,
1546                                                    c->channel[j]);
1547                         if (freq < 0)
1548                                 continue;
1549                         res.freq_list[freqs++] = freq;
1550                 }
1551         }
1552
1553         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1554
1555         p2p_clear_timeout(p2p);
1556         p2p->ssid_set = 0;
1557         peer->go_neg_req_sent = 0;
1558         peer->wps_method = WPS_NOT_READY;
1559
1560         p2p_set_state(p2p, P2P_PROVISIONING);
1561         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1562 }
1563
1564
1565 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1566                               const u8 *data, size_t len, int rx_freq)
1567 {
1568         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1569                 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1570         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1571
1572         if (len < 1)
1573                 return;
1574
1575         switch (data[0]) {
1576         case P2P_GO_NEG_REQ:
1577                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1578                 break;
1579         case P2P_GO_NEG_RESP:
1580                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1581                 break;
1582         case P2P_GO_NEG_CONF:
1583                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1584                 break;
1585         case P2P_INVITATION_REQ:
1586                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1587                                            rx_freq);
1588                 break;
1589         case P2P_INVITATION_RESP:
1590                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1591                 break;
1592         case P2P_PROV_DISC_REQ:
1593                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1594                 break;
1595         case P2P_PROV_DISC_RESP:
1596                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1597                 break;
1598         case P2P_DEV_DISC_REQ:
1599                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1600                 break;
1601         case P2P_DEV_DISC_RESP:
1602                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1603                 break;
1604         default:
1605                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1606                         "P2P: Unsupported P2P Public Action frame type %d",
1607                         data[0]);
1608                 break;
1609         }
1610 }
1611
1612
1613 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1614                                  const u8 *sa, const u8 *bssid, const u8 *data,
1615                                  size_t len, int freq)
1616 {
1617         if (len < 1)
1618                 return;
1619
1620         switch (data[0]) {
1621         case WLAN_PA_VENDOR_SPECIFIC:
1622                 data++;
1623                 len--;
1624                 if (len < 3)
1625                         return;
1626                 if (WPA_GET_BE24(data) != OUI_WFA)
1627                         return;
1628
1629                 data += 3;
1630                 len -= 3;
1631                 if (len < 1)
1632                         return;
1633
1634                 if (*data != P2P_OUI_TYPE)
1635                         return;
1636
1637                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1638                 break;
1639         case WLAN_PA_GAS_INITIAL_REQ:
1640                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1641                 break;
1642         case WLAN_PA_GAS_INITIAL_RESP:
1643                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1644                 break;
1645         case WLAN_PA_GAS_COMEBACK_REQ:
1646                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1647                 break;
1648         case WLAN_PA_GAS_COMEBACK_RESP:
1649                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1650                 break;
1651         }
1652 }
1653
1654
1655 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1656                    const u8 *bssid, u8 category,
1657                    const u8 *data, size_t len, int freq)
1658 {
1659         if (category == WLAN_ACTION_PUBLIC) {
1660                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1661                 return;
1662         }
1663
1664         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1665                 return;
1666
1667         if (len < 4)
1668                 return;
1669
1670         if (WPA_GET_BE24(data) != OUI_WFA)
1671                 return;
1672         data += 3;
1673         len -= 3;
1674
1675         if (*data != P2P_OUI_TYPE)
1676                 return;
1677         data++;
1678         len--;
1679
1680         /* P2P action frame */
1681         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1682                 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1683         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1684
1685         if (len < 1)
1686                 return;
1687         switch (data[0]) {
1688         case P2P_NOA:
1689                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1690                         "P2P: Received P2P Action - Notice of Absence");
1691                 /* TODO */
1692                 break;
1693         case P2P_PRESENCE_REQ:
1694                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1695                 break;
1696         case P2P_PRESENCE_RESP:
1697                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1698                 break;
1699         case P2P_GO_DISC_REQ:
1700                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1701                 break;
1702         default:
1703                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1704                         "P2P: Received P2P Action - unknown type %u", data[0]);
1705                 break;
1706         }
1707 }
1708
1709
1710 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1711 {
1712         struct p2p_data *p2p = eloop_ctx;
1713         if (p2p->go_neg_peer == NULL)
1714                 return;
1715         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1716         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1717         p2p_connect_send(p2p, p2p->go_neg_peer);
1718 }
1719
1720
1721 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1722 {
1723         struct p2p_data *p2p = eloop_ctx;
1724         if (p2p->invite_peer == NULL)
1725                 return;
1726         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1727         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1728 }
1729
1730
1731 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1732                                        const u8 *ie, size_t ie_len)
1733 {
1734         struct p2p_message msg;
1735         struct p2p_device *dev;
1736
1737         os_memset(&msg, 0, sizeof(msg));
1738         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1739         {
1740                 p2p_parse_free(&msg);
1741                 return; /* not a P2P probe */
1742         }
1743
1744         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1745             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1746             != 0) {
1747                 /* The Probe Request is not part of P2P Device Discovery. It is
1748                  * not known whether the source address of the frame is the P2P
1749                  * Device Address or P2P Interface Address. Do not add a new
1750                  * peer entry based on this frames.
1751                  */
1752                 p2p_parse_free(&msg);
1753                 return;
1754         }
1755
1756         dev = p2p_get_device(p2p, addr);
1757         if (dev) {
1758                 if (dev->country[0] == 0 && msg.listen_channel)
1759                         os_memcpy(dev->country, msg.listen_channel, 3);
1760                 os_get_time(&dev->last_seen);
1761                 p2p_parse_free(&msg);
1762                 return; /* already known */
1763         }
1764
1765         dev = p2p_create_device(p2p, addr);
1766         if (dev == NULL) {
1767                 p2p_parse_free(&msg);
1768                 return;
1769         }
1770
1771         os_get_time(&dev->last_seen);
1772         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1773
1774         if (msg.listen_channel) {
1775                 os_memcpy(dev->country, msg.listen_channel, 3);
1776                 dev->listen_freq = p2p_channel_to_freq(dev->country,
1777                                                        msg.listen_channel[3],
1778                                                        msg.listen_channel[4]);
1779         }
1780
1781         p2p_copy_wps_info(dev, 1, &msg);
1782
1783         if (msg.wfd_subelems) {
1784                 wpabuf_free(dev->info.wfd_subelems);
1785                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1786         }
1787
1788         p2p_parse_free(&msg);
1789
1790         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1791                 "P2P: Created device entry based on Probe Req: " MACSTR
1792                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1793                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1794                 dev->info.group_capab, dev->info.device_name,
1795                 dev->listen_freq);
1796 }
1797
1798
1799 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1800                                                 const u8 *addr,
1801                                                 struct p2p_message *msg)
1802 {
1803         struct p2p_device *dev;
1804
1805         dev = p2p_get_device(p2p, addr);
1806         if (dev) {
1807                 os_get_time(&dev->last_seen);
1808                 return dev; /* already known */
1809         }
1810
1811         dev = p2p_create_device(p2p, addr);
1812         if (dev == NULL)
1813                 return NULL;
1814
1815         p2p_add_dev_info(p2p, addr, dev, msg);
1816
1817         return dev;
1818 }
1819
1820
1821 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1822 {
1823         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1824                 return 1;
1825         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1826             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1827             WPA_GET_BE16(&req_dev_type[6]) == 0)
1828                 return 1; /* Category match with wildcard OUI/sub-category */
1829         return 0;
1830 }
1831
1832
1833 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1834                         size_t num_req_dev_type)
1835 {
1836         size_t i;
1837         for (i = 0; i < num_req_dev_type; i++) {
1838                 if (dev_type_match(dev_type, req_dev_type[i]))
1839                         return 1;
1840         }
1841         return 0;
1842 }
1843
1844
1845 /**
1846  * p2p_match_dev_type - Match local device type with requested type
1847  * @p2p: P2P module context from p2p_init()
1848  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1849  * Returns: 1 on match, 0 on mismatch
1850  *
1851  * This function can be used to match the Requested Device Type attribute in
1852  * WPS IE with the local device types for deciding whether to reply to a Probe
1853  * Request frame.
1854  */
1855 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1856 {
1857         struct wps_parse_attr attr;
1858         size_t i;
1859
1860         if (wps_parse_msg(wps, &attr))
1861                 return 1; /* assume no Requested Device Type attributes */
1862
1863         if (attr.num_req_dev_type == 0)
1864                 return 1; /* no Requested Device Type attributes -> match */
1865
1866         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1867                                 attr.num_req_dev_type))
1868                 return 1; /* Own Primary Device Type matches */
1869
1870         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1871                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1872                                         attr.req_dev_type,
1873                                         attr.num_req_dev_type))
1874                 return 1; /* Own Secondary Device Type matches */
1875
1876         /* No matching device type found */
1877         return 0;
1878 }
1879
1880
1881 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1882 {
1883         struct wpabuf *buf;
1884         u8 *len;
1885         int pw_id = -1;
1886         size_t extra = 0;
1887
1888 #ifdef CONFIG_WIFI_DISPLAY
1889         if (p2p->wfd_ie_probe_resp)
1890                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1891 #endif /* CONFIG_WIFI_DISPLAY */
1892
1893         buf = wpabuf_alloc(1000 + extra);
1894         if (buf == NULL)
1895                 return NULL;
1896
1897         if (p2p->go_neg_peer) {
1898                 /* Advertise immediate availability of WPS credential */
1899                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1900         }
1901
1902         p2p_build_wps_ie(p2p, buf, pw_id, 1);
1903
1904 #ifdef CONFIG_WIFI_DISPLAY
1905         if (p2p->wfd_ie_probe_resp)
1906                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1907 #endif /* CONFIG_WIFI_DISPLAY */
1908
1909         /* P2P IE */
1910         len = p2p_buf_add_ie_hdr(buf);
1911         p2p_buf_add_capability(buf, p2p->dev_capab &
1912                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1913         if (p2p->ext_listen_interval)
1914                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1915                                               p2p->ext_listen_interval);
1916         p2p_buf_add_device_info(buf, p2p, NULL);
1917         p2p_buf_update_ie_hdr(buf, len);
1918
1919         return buf;
1920 }
1921
1922
1923 static int is_11b(u8 rate)
1924 {
1925         return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1926 }
1927
1928
1929 static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1930 {
1931         int num_11b = 0, num_others = 0;
1932         int i;
1933
1934         if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1935                 return 0;
1936
1937         for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1938                 if (is_11b(elems->supp_rates[i]))
1939                         num_11b++;
1940                 else
1941                         num_others++;
1942         }
1943
1944         for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1945              i++) {
1946                 if (is_11b(elems->ext_supp_rates[i]))
1947                         num_11b++;
1948                 else
1949                         num_others++;
1950         }
1951
1952         return num_11b > 0 && num_others == 0;
1953 }
1954
1955
1956 static enum p2p_probe_req_status
1957 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1958                 const u8 *bssid, const u8 *ie, size_t ie_len)
1959 {
1960         struct ieee802_11_elems elems;
1961         struct wpabuf *buf;
1962         struct ieee80211_mgmt *resp;
1963         struct p2p_message msg;
1964         struct wpabuf *ies;
1965
1966         if (!p2p->in_listen || !p2p->drv_in_listen) {
1967                 /* not in Listen state - ignore Probe Request */
1968                 return P2P_PREQ_NOT_LISTEN;
1969         }
1970
1971         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1972             ParseFailed) {
1973                 /* Ignore invalid Probe Request frames */
1974                 return P2P_PREQ_MALFORMED;
1975         }
1976
1977         if (elems.p2p == NULL) {
1978                 /* not a P2P probe - ignore it */
1979                 return P2P_PREQ_NOT_P2P;
1980         }
1981
1982         if (dst && !is_broadcast_ether_addr(dst) &&
1983             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1984                 /* Not sent to the broadcast address or our P2P Device Address
1985                  */
1986                 return P2P_PREQ_NOT_PROCESSED;
1987         }
1988
1989         if (bssid && !is_broadcast_ether_addr(bssid)) {
1990                 /* Not sent to the Wildcard BSSID */
1991                 return P2P_PREQ_NOT_PROCESSED;
1992         }
1993
1994         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1995             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1996             0) {
1997                 /* not using P2P Wildcard SSID - ignore */
1998                 return P2P_PREQ_NOT_PROCESSED;
1999         }
2000
2001         if (supp_rates_11b_only(&elems)) {
2002                 /* Indicates support for 11b rates only */
2003                 return P2P_PREQ_NOT_P2P;
2004         }
2005
2006         os_memset(&msg, 0, sizeof(msg));
2007         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2008                 /* Could not parse P2P attributes */
2009                 return P2P_PREQ_NOT_P2P;
2010         }
2011
2012         if (msg.device_id &&
2013             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2014                 /* Device ID did not match */
2015                 p2p_parse_free(&msg);
2016                 return P2P_PREQ_NOT_PROCESSED;
2017         }
2018
2019         /* Check Requested Device Type match */
2020         if (msg.wps_attributes &&
2021             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2022                 /* No match with Requested Device Type */
2023                 p2p_parse_free(&msg);
2024                 return P2P_PREQ_NOT_PROCESSED;
2025         }
2026         p2p_parse_free(&msg);
2027
2028         if (!p2p->cfg->send_probe_resp) {
2029                 /* Response generated elsewhere */
2030                 return P2P_PREQ_NOT_PROCESSED;
2031         }
2032
2033         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2034                 "P2P: Reply to P2P Probe Request in Listen state");
2035
2036         /*
2037          * We do not really have a specific BSS that this frame is advertising,
2038          * so build a frame that has some information in valid format. This is
2039          * really only used for discovery purposes, not to learn exact BSS
2040          * parameters.
2041          */
2042         ies = p2p_build_probe_resp_ies(p2p);
2043         if (ies == NULL)
2044                 return P2P_PREQ_NOT_PROCESSED;
2045
2046         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2047         if (buf == NULL) {
2048                 wpabuf_free(ies);
2049                 return P2P_PREQ_NOT_PROCESSED;
2050         }
2051
2052         resp = NULL;
2053         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2054
2055         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2056                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2057         os_memcpy(resp->da, addr, ETH_ALEN);
2058         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2059         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2060         resp->u.probe_resp.beacon_int = host_to_le16(100);
2061         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2062         resp->u.probe_resp.capab_info =
2063                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2064                              WLAN_CAPABILITY_PRIVACY |
2065                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2066
2067         wpabuf_put_u8(buf, WLAN_EID_SSID);
2068         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2069         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2070
2071         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2072         wpabuf_put_u8(buf, 8);
2073         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2074         wpabuf_put_u8(buf, 90 / 5);
2075         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2076         wpabuf_put_u8(buf, 180 / 5);
2077         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2078         wpabuf_put_u8(buf, 360 / 5);
2079         wpabuf_put_u8(buf, 480 / 5);
2080         wpabuf_put_u8(buf, 540 / 5);
2081
2082         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2083         wpabuf_put_u8(buf, 1);
2084         wpabuf_put_u8(buf, p2p->cfg->channel);
2085
2086         wpabuf_put_buf(buf, ies);
2087         wpabuf_free(ies);
2088
2089         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2090
2091         wpabuf_free(buf);
2092
2093         return P2P_PREQ_NOT_PROCESSED;
2094 }
2095
2096
2097 enum p2p_probe_req_status
2098 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2099                  const u8 *bssid, const u8 *ie, size_t ie_len)
2100 {
2101         enum p2p_probe_req_status res;
2102
2103         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2104
2105         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2106
2107         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2108             p2p->go_neg_peer &&
2109             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2110             == 0) {
2111                 /* Received a Probe Request from GO Negotiation peer */
2112                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2113                         "P2P: Found GO Negotiation peer - try to start GO "
2114                         "negotiation from timeout");
2115                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2116                 return P2P_PREQ_PROCESSED;
2117         }
2118
2119         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2120             p2p->invite_peer &&
2121             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2122             == 0) {
2123                 /* Received a Probe Request from Invite peer */
2124                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2125                         "P2P: Found Invite peer - try to start Invite from "
2126                         "timeout");
2127                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2128                 return P2P_PREQ_PROCESSED;
2129         }
2130
2131         return res;
2132 }
2133
2134
2135 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2136                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2137 {
2138         struct wpabuf *tmp;
2139         u8 *lpos;
2140         size_t tmplen;
2141         int res;
2142         u8 group_capab;
2143
2144         if (p2p_ie == NULL)
2145                 return 0; /* WLAN AP is not a P2P manager */
2146
2147         /*
2148          * (Re)Association Request - P2P IE
2149          * P2P Capability attribute (shall be present)
2150          * P2P Interface attribute (present if concurrent device and
2151          *      P2P Management is enabled)
2152          */
2153         tmp = wpabuf_alloc(200);
2154         if (tmp == NULL)
2155                 return -1;
2156
2157         lpos = p2p_buf_add_ie_hdr(tmp);
2158         group_capab = 0;
2159         if (p2p->num_groups > 0) {
2160                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2161                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2162                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2163                     p2p->cross_connect)
2164                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2165         }
2166         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2167         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2168             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2169                 p2p_buf_add_p2p_interface(tmp, p2p);
2170         p2p_buf_update_ie_hdr(tmp, lpos);
2171
2172         tmplen = wpabuf_len(tmp);
2173         if (tmplen > len)
2174                 res = -1;
2175         else {
2176                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2177                 res = tmplen;
2178         }
2179         wpabuf_free(tmp);
2180
2181         return res;
2182 }
2183
2184
2185 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2186                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2187 {
2188         struct wpabuf *tmp;
2189         u8 *lpos;
2190         struct p2p_device *peer;
2191         size_t tmplen;
2192         int res;
2193         size_t extra = 0;
2194
2195         if (!p2p_group)
2196                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2197
2198 #ifdef CONFIG_WIFI_DISPLAY
2199         if (p2p->wfd_ie_assoc_req)
2200                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2201 #endif /* CONFIG_WIFI_DISPLAY */
2202
2203         /*
2204          * (Re)Association Request - P2P IE
2205          * P2P Capability attribute (shall be present)
2206          * Extended Listen Timing (may be present)
2207          * P2P Device Info attribute (shall be present)
2208          */
2209         tmp = wpabuf_alloc(200 + extra);
2210         if (tmp == NULL)
2211                 return -1;
2212
2213 #ifdef CONFIG_WIFI_DISPLAY
2214         if (p2p->wfd_ie_assoc_req)
2215                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2216 #endif /* CONFIG_WIFI_DISPLAY */
2217
2218         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2219
2220         lpos = p2p_buf_add_ie_hdr(tmp);
2221         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2222         if (p2p->ext_listen_interval)
2223                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2224                                               p2p->ext_listen_interval);
2225         p2p_buf_add_device_info(tmp, p2p, peer);
2226         p2p_buf_update_ie_hdr(tmp, lpos);
2227
2228         tmplen = wpabuf_len(tmp);
2229         if (tmplen > len)
2230                 res = -1;
2231         else {
2232                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2233                 res = tmplen;
2234         }
2235         wpabuf_free(tmp);
2236
2237         return res;
2238 }
2239
2240
2241 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2242 {
2243         struct wpabuf *p2p_ie;
2244         int ret;
2245
2246         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2247         if (p2p_ie == NULL)
2248                 return 0;
2249
2250         ret = p2p_attr_text(p2p_ie, buf, end);
2251         wpabuf_free(p2p_ie);
2252         return ret;
2253 }
2254
2255
2256 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2257 {
2258         struct p2p_message msg;
2259
2260         os_memset(&msg, 0, sizeof(msg));
2261         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2262                 return -1;
2263
2264         if (msg.p2p_device_addr) {
2265                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2266                 return 0;
2267         } else if (msg.device_id) {
2268                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2269                 return 0;
2270         }
2271         return -1;
2272 }
2273
2274
2275 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2276 {
2277         struct wpabuf *p2p_ie;
2278         int ret;
2279
2280         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2281                                              P2P_IE_VENDOR_TYPE);
2282         if (p2p_ie == NULL)
2283                 return -1;
2284         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2285         wpabuf_free(p2p_ie);
2286         return ret;
2287 }
2288
2289
2290 static void p2p_clear_go_neg(struct p2p_data *p2p)
2291 {
2292         p2p->go_neg_peer = NULL;
2293         p2p_clear_timeout(p2p);
2294         p2p_set_state(p2p, P2P_IDLE);
2295 }
2296
2297
2298 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2299 {
2300         if (p2p->go_neg_peer == NULL) {
2301                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2302                         "P2P: No pending Group Formation - "
2303                         "ignore WPS registration success notification");
2304                 return; /* No pending Group Formation */
2305         }
2306
2307         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2308             0) {
2309                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2310                         "P2P: Ignore WPS registration success notification "
2311                         "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2312                         MAC2STR(mac_addr),
2313                         MAC2STR(p2p->go_neg_peer->intended_addr));
2314                 return; /* Ignore unexpected peer address */
2315         }
2316
2317         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2318                 "P2P: Group Formation completed successfully with " MACSTR,
2319                 MAC2STR(mac_addr));
2320
2321         p2p_clear_go_neg(p2p);
2322 }
2323
2324
2325 void p2p_group_formation_failed(struct p2p_data *p2p)
2326 {
2327         if (p2p->go_neg_peer == NULL) {
2328                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2329                         "P2P: No pending Group Formation - "
2330                         "ignore group formation failure notification");
2331                 return; /* No pending Group Formation */
2332         }
2333
2334         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2335                 "P2P: Group Formation failed with " MACSTR,
2336                 MAC2STR(p2p->go_neg_peer->intended_addr));
2337
2338         p2p_clear_go_neg(p2p);
2339 }
2340
2341
2342 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2343 {
2344         struct p2p_data *p2p;
2345
2346         if (cfg->max_peers < 1)
2347                 return NULL;
2348
2349         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2350         if (p2p == NULL)
2351                 return NULL;
2352         p2p->cfg = (struct p2p_config *) (p2p + 1);
2353         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2354         if (cfg->dev_name)
2355                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2356         if (cfg->manufacturer)
2357                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2358         if (cfg->model_name)
2359                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2360         if (cfg->model_number)
2361                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2362         if (cfg->serial_number)
2363                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2364         if (cfg->pref_chan) {
2365                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2366                                                 sizeof(struct p2p_channel));
2367                 if (p2p->cfg->pref_chan) {
2368                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2369                                   cfg->num_pref_chan *
2370                                   sizeof(struct p2p_channel));
2371                 } else
2372                         p2p->cfg->num_pref_chan = 0;
2373         }
2374
2375         p2p->min_disc_int = 1;
2376         p2p->max_disc_int = 3;
2377         p2p->max_disc_tu = -1;
2378
2379         os_get_random(&p2p->next_tie_breaker, 1);
2380         p2p->next_tie_breaker &= 0x01;
2381         if (cfg->sd_request)
2382                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2383         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2384         if (cfg->concurrent_operations)
2385                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2386         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2387
2388         dl_list_init(&p2p->devices);
2389
2390         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2391                                p2p_expiration_timeout, p2p, NULL);
2392
2393         p2p->go_timeout = 100;
2394         p2p->client_timeout = 20;
2395
2396         return p2p;
2397 }
2398
2399
2400 void p2p_deinit(struct p2p_data *p2p)
2401 {
2402 #ifdef CONFIG_WIFI_DISPLAY
2403         wpabuf_free(p2p->wfd_ie_beacon);
2404         wpabuf_free(p2p->wfd_ie_probe_req);
2405         wpabuf_free(p2p->wfd_ie_probe_resp);
2406         wpabuf_free(p2p->wfd_ie_assoc_req);
2407         wpabuf_free(p2p->wfd_ie_invitation);
2408         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2409         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2410         wpabuf_free(p2p->wfd_ie_go_neg);
2411         wpabuf_free(p2p->wfd_dev_info);
2412         wpabuf_free(p2p->wfd_assoc_bssid);
2413         wpabuf_free(p2p->wfd_coupled_sink_info);
2414 #endif /* CONFIG_WIFI_DISPLAY */
2415
2416         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2417         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2418         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2419         p2p_flush(p2p);
2420         p2p_free_req_dev_types(p2p);
2421         os_free(p2p->cfg->dev_name);
2422         os_free(p2p->cfg->manufacturer);
2423         os_free(p2p->cfg->model_name);
2424         os_free(p2p->cfg->model_number);
2425         os_free(p2p->cfg->serial_number);
2426         os_free(p2p->cfg->pref_chan);
2427         os_free(p2p->groups);
2428         wpabuf_free(p2p->sd_resp);
2429         os_free(p2p->after_scan_tx);
2430         p2p_remove_wps_vendor_extensions(p2p);
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         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2459                 MAC2STR(addr));
2460
2461         if (p2p->go_neg_peer == dev)
2462                 p2p->go_neg_peer = NULL;
2463
2464         dev->wps_method = WPS_NOT_READY;
2465         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2466         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2467
2468         /* Check if after_scan_tx is for this peer. If so free it */
2469         if (p2p->after_scan_tx &&
2470             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2471                 os_free(p2p->after_scan_tx);
2472                 p2p->after_scan_tx = NULL;
2473         }
2474
2475         return 0;
2476 }
2477
2478
2479 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2480 {
2481         os_free(p2p->cfg->dev_name);
2482         if (dev_name) {
2483                 p2p->cfg->dev_name = os_strdup(dev_name);
2484                 if (p2p->cfg->dev_name == NULL)
2485                         return -1;
2486         } else
2487                 p2p->cfg->dev_name = NULL;
2488         return 0;
2489 }
2490
2491
2492 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2493 {
2494         os_free(p2p->cfg->manufacturer);
2495         p2p->cfg->manufacturer = NULL;
2496         if (manufacturer) {
2497                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2498                 if (p2p->cfg->manufacturer == NULL)
2499                         return -1;
2500         }
2501
2502         return 0;
2503 }
2504
2505
2506 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2507 {
2508         os_free(p2p->cfg->model_name);
2509         p2p->cfg->model_name = NULL;
2510         if (model_name) {
2511                 p2p->cfg->model_name = os_strdup(model_name);
2512                 if (p2p->cfg->model_name == NULL)
2513                         return -1;
2514         }
2515
2516         return 0;
2517 }
2518
2519
2520 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2521 {
2522         os_free(p2p->cfg->model_number);
2523         p2p->cfg->model_number = NULL;
2524         if (model_number) {
2525                 p2p->cfg->model_number = os_strdup(model_number);
2526                 if (p2p->cfg->model_number == NULL)
2527                         return -1;
2528         }
2529
2530         return 0;
2531 }
2532
2533
2534 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2535 {
2536         os_free(p2p->cfg->serial_number);
2537         p2p->cfg->serial_number = NULL;
2538         if (serial_number) {
2539                 p2p->cfg->serial_number = os_strdup(serial_number);
2540                 if (p2p->cfg->serial_number == NULL)
2541                         return -1;
2542         }
2543
2544         return 0;
2545 }
2546
2547
2548 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2549 {
2550         p2p->cfg->config_methods = config_methods;
2551 }
2552
2553
2554 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2555 {
2556         os_memcpy(p2p->cfg->uuid, uuid, 16);
2557 }
2558
2559
2560 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2561 {
2562         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2563         return 0;
2564 }
2565
2566
2567 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2568                           size_t num_dev_types)
2569 {
2570         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2571                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2572         p2p->cfg->num_sec_dev_types = num_dev_types;
2573         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2574         return 0;
2575 }
2576
2577
2578 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2579 {
2580         int i;
2581
2582         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2583                 wpabuf_free(p2p->wps_vendor_ext[i]);
2584                 p2p->wps_vendor_ext[i] = NULL;
2585         }
2586 }
2587
2588
2589 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2590                                  const struct wpabuf *vendor_ext)
2591 {
2592         int i;
2593
2594         if (vendor_ext == NULL)
2595                 return -1;
2596
2597         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2598                 if (p2p->wps_vendor_ext[i] == NULL)
2599                         break;
2600         }
2601         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2602                 return -1;
2603
2604         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2605         if (p2p->wps_vendor_ext[i] == NULL)
2606                 return -1;
2607
2608         return 0;
2609 }
2610
2611
2612 int p2p_set_country(struct p2p_data *p2p, const char *country)
2613 {
2614         os_memcpy(p2p->cfg->country, country, 3);
2615         return 0;
2616 }
2617
2618
2619 void p2p_continue_find(struct p2p_data *p2p)
2620 {
2621         struct p2p_device *dev;
2622         p2p_set_state(p2p, P2P_SEARCH);
2623         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2624                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2625                         if (p2p_start_sd(p2p, dev) == 0)
2626                                 return;
2627                         else
2628                                 break;
2629                 } else if (dev->req_config_methods &&
2630                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2631                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2632                                 "pending Provision Discovery Request to "
2633                                 MACSTR " (config methods 0x%x)",
2634                                 MAC2STR(dev->info.p2p_device_addr),
2635                                 dev->req_config_methods);
2636                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2637                                 return;
2638                 }
2639         }
2640
2641         p2p_listen_in_find(p2p, 1);
2642 }
2643
2644
2645 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2646 {
2647         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2648                 "P2P: Service Discovery Query TX callback: success=%d",
2649                 success);
2650         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2651
2652         if (!success) {
2653                 if (p2p->sd_peer) {
2654                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2655                         p2p->sd_peer = NULL;
2656                 }
2657                 p2p_continue_find(p2p);
2658                 return;
2659         }
2660
2661         if (p2p->sd_peer == NULL) {
2662                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2663                         "P2P: No SD peer entry known");
2664                 p2p_continue_find(p2p);
2665                 return;
2666         }
2667
2668         /* Wait for response from the peer */
2669         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2670         p2p_set_timeout(p2p, 0, 200000);
2671 }
2672
2673
2674 /**
2675  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2676  * @p2p: P2P module context from p2p_init()
2677  */
2678 static void p2p_retry_pd(struct p2p_data *p2p)
2679 {
2680         struct p2p_device *dev;
2681
2682         if (p2p->state != P2P_IDLE)
2683                 return;
2684
2685         /*
2686          * Retry the prov disc req attempt only for the peer that the user had
2687          * requested.
2688          */
2689
2690         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2691                 if (os_memcmp(p2p->pending_pd_devaddr,
2692                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2693                         continue;
2694                 if (!dev->req_config_methods)
2695                         continue;
2696
2697                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2698                         "pending Provision Discovery Request to "
2699                         MACSTR " (config methods 0x%x)",
2700                         MAC2STR(dev->info.p2p_device_addr),
2701                         dev->req_config_methods);
2702                 p2p_send_prov_disc_req(p2p, dev,
2703                                        dev->flags & P2P_DEV_PD_FOR_JOIN, 0);
2704                 return;
2705         }
2706 }
2707
2708
2709 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2710 {
2711         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2712                 "P2P: Provision Discovery Request TX callback: success=%d",
2713                 success);
2714
2715         /*
2716          * Postpone resetting the pending action state till after we actually
2717          * time out. This allows us to take some action like notifying any
2718          * interested parties about no response to the request.
2719          *
2720          * When the timer (below) goes off we check in IDLE, SEARCH, or
2721          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2722          * requests in, if this was still pending and then raise notification.
2723          */
2724
2725         if (!success) {
2726                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2727
2728                 if (p2p->user_initiated_pd &&
2729                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2730                 {
2731                         /* Retry request from timeout to avoid busy loops */
2732                         p2p->pending_action_state = P2P_PENDING_PD;
2733                         p2p_set_timeout(p2p, 0, 50000);
2734                 } else if (p2p->state != P2P_IDLE)
2735                         p2p_continue_find(p2p);
2736                 else if (p2p->user_initiated_pd) {
2737                         p2p->pending_action_state = P2P_PENDING_PD;
2738                         p2p_set_timeout(p2p, 0, 300000);
2739                 }
2740                 return;
2741         }
2742
2743         /*
2744          * This postponing, of resetting pending_action_state, needs to be
2745          * done only for user initiated PD requests and not internal ones.
2746          */
2747         if (p2p->user_initiated_pd)
2748                 p2p->pending_action_state = P2P_PENDING_PD;
2749         else
2750                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2751
2752         /* Wait for response from the peer */
2753         if (p2p->state == P2P_SEARCH)
2754                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2755         p2p_set_timeout(p2p, 0, 200000);
2756 }
2757
2758
2759 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2760                          unsigned int age, int level, const u8 *ies,
2761                          size_t ies_len)
2762 {
2763         p2p_add_device(p2p, bssid, freq, age, level, ies, ies_len, 1);
2764
2765         return 0;
2766 }
2767
2768
2769 void p2p_scan_res_handled(struct p2p_data *p2p)
2770 {
2771         if (!p2p->p2p_scan_running) {
2772                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2773                         "running, but scan results received");
2774         }
2775         p2p->p2p_scan_running = 0;
2776         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2777
2778         if (p2p_run_after_scan(p2p))
2779                 return;
2780         if (p2p->state == P2P_SEARCH)
2781                 p2p_continue_find(p2p);
2782 }
2783
2784
2785 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2786 {
2787         u8 *len;
2788
2789 #ifdef CONFIG_WIFI_DISPLAY
2790         if (p2p->wfd_ie_probe_req)
2791                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2792 #endif /* CONFIG_WIFI_DISPLAY */
2793
2794         len = p2p_buf_add_ie_hdr(ies);
2795         p2p_buf_add_capability(ies, p2p->dev_capab &
2796                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2797         if (dev_id)
2798                 p2p_buf_add_device_id(ies, dev_id);
2799         if (p2p->cfg->reg_class && p2p->cfg->channel)
2800                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2801                                            p2p->cfg->reg_class,
2802                                            p2p->cfg->channel);
2803         if (p2p->ext_listen_interval)
2804                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2805                                               p2p->ext_listen_interval);
2806         /* TODO: p2p_buf_add_operating_channel() if GO */
2807         p2p_buf_update_ie_hdr(ies, len);
2808 }
2809
2810
2811 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2812 {
2813         size_t len = 100;
2814
2815 #ifdef CONFIG_WIFI_DISPLAY
2816         if (p2p && p2p->wfd_ie_probe_req)
2817                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2818 #endif /* CONFIG_WIFI_DISPLAY */
2819
2820         return len;
2821 }
2822
2823
2824 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2825 {
2826         return p2p_attr_text(p2p_ie, buf, end);
2827 }
2828
2829
2830 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2831 {
2832         struct p2p_device *dev = p2p->go_neg_peer;
2833
2834         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2835                 "P2P: GO Negotiation Request TX callback: success=%d",
2836                 success);
2837
2838         if (dev == NULL) {
2839                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2840                         "P2P: No pending GO Negotiation");
2841                 return;
2842         }
2843
2844         if (success) {
2845                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2846                         p2p_set_state(p2p, P2P_IDLE);
2847                         return;
2848                 }
2849         } else if (dev->go_neg_req_sent) {
2850                 /* Cancel the increment from p2p_connect_send() on failure */
2851                 dev->go_neg_req_sent--;
2852         }
2853
2854         if (!success &&
2855             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2856             !is_zero_ether_addr(dev->member_in_go_dev)) {
2857                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2858                         "P2P: Peer " MACSTR " did not acknowledge request - "
2859                         "try to use device discoverability through its GO",
2860                         MAC2STR(dev->info.p2p_device_addr));
2861                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2862                 p2p_send_dev_disc_req(p2p, dev);
2863                 return;
2864         }
2865
2866         /*
2867          * Use P2P find, if needed, to find the other device from its listen
2868          * channel.
2869          */
2870         p2p_set_state(p2p, P2P_CONNECT);
2871         p2p_set_timeout(p2p, 0, success ? 200000 : 100000);
2872 }
2873
2874
2875 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2876 {
2877         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2878                 "P2P: GO Negotiation Response TX callback: success=%d",
2879                 success);
2880         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2881                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2882                         "P2P: Ignore TX callback event - GO Negotiation is "
2883                         "not running anymore");
2884                 return;
2885         }
2886         p2p_set_state(p2p, P2P_CONNECT);
2887         p2p_set_timeout(p2p, 0, 250000);
2888 }
2889
2890
2891 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2892 {
2893         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2894                 "P2P: GO Negotiation Response (failure) TX callback: "
2895                 "success=%d", success);
2896         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2897                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2898                                   p2p->go_neg_peer->status);
2899         }
2900 }
2901
2902
2903 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2904                                enum p2p_send_action_result result)
2905 {
2906         struct p2p_device *dev;
2907
2908         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2909                 "P2P: GO Negotiation Confirm TX callback: result=%d",
2910                 result);
2911         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2912         if (result == P2P_SEND_ACTION_FAILED) {
2913                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2914                 return;
2915         }
2916         if (result == P2P_SEND_ACTION_NO_ACK) {
2917                 /*
2918                  * It looks like the TX status for GO Negotiation Confirm is
2919                  * often showing failure even when the peer has actually
2920                  * received the frame. Since the peer may change channels
2921                  * immediately after having received the frame, we may not see
2922                  * an Ack for retries, so just dropping a single frame may
2923                  * trigger this. To allow the group formation to succeed if the
2924                  * peer did indeed receive the frame, continue regardless of
2925                  * the TX status.
2926                  */
2927                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2928                         "P2P: Assume GO Negotiation Confirm TX was actually "
2929                         "received by the peer even though Ack was not "
2930                         "reported");
2931         }
2932
2933         dev = p2p->go_neg_peer;
2934         if (dev == NULL)
2935                 return;
2936
2937         p2p_go_complete(p2p, dev);
2938 }
2939
2940
2941 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2942                         const u8 *src, const u8 *bssid,
2943                         enum p2p_send_action_result result)
2944 {
2945         enum p2p_pending_action_state state;
2946         int success;
2947
2948         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2949                 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2950                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2951                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2952                 MAC2STR(bssid), result);
2953         success = result == P2P_SEND_ACTION_SUCCESS;
2954         state = p2p->pending_action_state;
2955         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2956         switch (state) {
2957         case P2P_NO_PENDING_ACTION:
2958                 break;
2959         case P2P_PENDING_GO_NEG_REQUEST:
2960                 p2p_go_neg_req_cb(p2p, success);
2961                 break;
2962         case P2P_PENDING_GO_NEG_RESPONSE:
2963                 p2p_go_neg_resp_cb(p2p, success);
2964                 break;
2965         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2966                 p2p_go_neg_resp_failure_cb(p2p, success);
2967                 break;
2968         case P2P_PENDING_GO_NEG_CONFIRM:
2969                 p2p_go_neg_conf_cb(p2p, result);
2970                 break;
2971         case P2P_PENDING_SD:
2972                 p2p_sd_cb(p2p, success);
2973                 break;
2974         case P2P_PENDING_PD:
2975                 p2p_prov_disc_cb(p2p, success);
2976                 break;
2977         case P2P_PENDING_INVITATION_REQUEST:
2978                 p2p_invitation_req_cb(p2p, success);
2979                 break;
2980         case P2P_PENDING_INVITATION_RESPONSE:
2981                 p2p_invitation_resp_cb(p2p, success);
2982                 break;
2983         case P2P_PENDING_DEV_DISC_REQUEST:
2984                 p2p_dev_disc_req_cb(p2p, success);
2985                 break;
2986         case P2P_PENDING_DEV_DISC_RESPONSE:
2987                 p2p_dev_disc_resp_cb(p2p, success);
2988                 break;
2989         case P2P_PENDING_GO_DISC_REQ:
2990                 p2p_go_disc_req_cb(p2p, success);
2991                 break;
2992         }
2993 }
2994
2995
2996 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2997                    unsigned int duration)
2998 {
2999         if (freq == p2p->pending_client_disc_freq) {
3000                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3001                         "P2P: Client discoverability remain-awake completed");
3002                 p2p->pending_client_disc_freq = 0;
3003                 return;
3004         }
3005
3006         if (freq != p2p->pending_listen_freq) {
3007                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3008                         "P2P: Unexpected listen callback for freq=%u "
3009                         "duration=%u (pending_listen_freq=%u)",
3010                         freq, duration, p2p->pending_listen_freq);
3011                 return;
3012         }
3013
3014         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3015                 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
3016                 "callback",
3017                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3018                 p2p->pending_listen_freq);
3019         p2p->in_listen = 1;
3020         p2p->drv_in_listen = freq;
3021         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3022                 /*
3023                  * Add 20 msec extra wait to avoid race condition with driver
3024                  * remain-on-channel end event, i.e., give driver more time to
3025                  * complete the operation before our timeout expires.
3026                  */
3027                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3028                                 p2p->pending_listen_usec + 20000);
3029         }
3030
3031         p2p->pending_listen_freq = 0;
3032 }
3033
3034
3035 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3036 {
3037         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
3038                 "state (freq=%u)", freq);
3039         p2p->drv_in_listen = 0;
3040         if (p2p->in_listen)
3041                 return 0; /* Internal timeout will trigger the next step */
3042
3043         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3044                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3045                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3046                                 "P2P: Timeout on sending GO Negotiation "
3047                                 "Request without getting response");
3048                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3049                         return 0;
3050                 }
3051
3052                 p2p_set_state(p2p, P2P_CONNECT);
3053                 p2p_connect_send(p2p, p2p->go_neg_peer);
3054                 return 1;
3055         } else if (p2p->state == P2P_SEARCH) {
3056                 if (p2p->p2p_scan_running) {
3057                          /*
3058                           * Search is already in progress. This can happen if
3059                           * an Action frame RX is reported immediately after
3060                           * the end of a remain-on-channel operation and the
3061                           * response frame to that is sent using an offchannel
3062                           * operation while in p2p_find. Avoid an attempt to
3063                           * restart a scan here.
3064                           */
3065                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan "
3066                                 "already in progress - do not try to start a "
3067                                 "new one");
3068                         return 1;
3069                 }
3070                 if (p2p->pending_listen_freq) {
3071                         /*
3072                          * Better wait a bit if the driver is unable to start
3073                          * offchannel operation for some reason. p2p_search()
3074                          * will be started from internal timeout.
3075                          */
3076                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen "
3077                                 "operation did not seem to start - delay "
3078                                 "search phase to avoid busy loop");
3079                         p2p_set_timeout(p2p, 0, 100000);
3080                         return 1;
3081                 }
3082                 if (p2p->search_delay) {
3083                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3084                                 "search operation by %u ms",
3085                                 p2p->search_delay);
3086                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3087                                         (p2p->search_delay % 1000) * 1000);
3088                         return 1;
3089                 }
3090                 p2p_search(p2p);
3091                 return 1;
3092         }
3093
3094         return 0;
3095 }
3096
3097
3098 static void p2p_timeout_connect(struct p2p_data *p2p)
3099 {
3100         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3101         if (p2p->go_neg_peer &&
3102             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3103                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO "
3104                         "Negotiation Confirm timed out - assume GO "
3105                         "Negotiation failed");
3106                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3107                 return;
3108         }
3109         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3110         p2p_listen_in_find(p2p, 0);
3111 }
3112
3113
3114 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3115 {
3116         if (p2p->go_neg_peer) {
3117                 if (p2p->drv_in_listen) {
3118                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
3119                                 "still in Listen state; wait for it to "
3120                                 "complete");
3121                         return;
3122                 }
3123
3124                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3125                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3126                                 "P2P: Timeout on sending GO Negotiation "
3127                                 "Request without getting response");
3128                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3129                         return;
3130                 }
3131
3132                 p2p_set_state(p2p, P2P_CONNECT);
3133                 p2p_connect_send(p2p, p2p->go_neg_peer);
3134         } else
3135                 p2p_set_state(p2p, P2P_IDLE);
3136 }
3137
3138
3139 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3140 {
3141         /*
3142          * TODO: could remain constantly in Listen state for some time if there
3143          * are no other concurrent uses for the radio. For now, go to listen
3144          * state once per second to give other uses a chance to use the radio.
3145          */
3146         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3147         p2p_set_timeout(p2p, 0, 500000);
3148 }
3149
3150
3151 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3152 {
3153         struct p2p_device *dev = p2p->go_neg_peer;
3154
3155         if (dev == NULL) {
3156                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3157                         "P2P: Unknown GO Neg peer - stop GO Neg wait");
3158                 return;
3159         }
3160
3161         dev->wait_count++;
3162         if (dev->wait_count >= 120) {
3163                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3164                         "P2P: Timeout on waiting peer to become ready for GO "
3165                         "Negotiation");
3166                 p2p_go_neg_failed(p2p, dev, -1);
3167                 return;
3168         }
3169
3170         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3171                 "P2P: Go to Listen state while waiting for the peer to become "
3172                 "ready for GO Negotiation");
3173         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3174         p2p_listen_in_find(p2p, 0);
3175 }
3176
3177
3178 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3179 {
3180         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3181                 "P2P: Service Discovery Query timeout");
3182         if (p2p->sd_peer) {
3183                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3184                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3185                 p2p->sd_peer = NULL;
3186         }
3187         p2p_continue_find(p2p);
3188 }
3189
3190
3191 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3192 {
3193         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3194                 "P2P: Provision Discovery Request timeout");
3195         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3196         p2p_continue_find(p2p);
3197 }
3198
3199
3200 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3201 {
3202         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3203
3204         /*
3205          * For user initiated PD requests that we have not gotten any responses
3206          * for while in IDLE state, we retry them a couple of times before
3207          * giving up.
3208          */
3209         if (!p2p->user_initiated_pd)
3210                 return;
3211
3212         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3213                 "P2P: User initiated Provision Discovery Request timeout");
3214
3215         if (p2p->pd_retries) {
3216                 p2p->pd_retries--;
3217                 p2p_retry_pd(p2p);
3218         } else {
3219                 struct p2p_device *dev;
3220                 int for_join = 0;
3221
3222                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3223                         if (os_memcmp(p2p->pending_pd_devaddr,
3224                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3225                                 continue;
3226                         if (dev->req_config_methods &&
3227                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3228                                 for_join = 1;
3229                 }
3230
3231                 if (p2p->cfg->prov_disc_fail)
3232                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3233                                                  p2p->pending_pd_devaddr,
3234                                                  for_join ?
3235                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3236                                                  P2P_PROV_DISC_TIMEOUT);
3237                 p2p_reset_pending_pd(p2p);
3238         }
3239 }
3240
3241
3242 static void p2p_timeout_invite(struct p2p_data *p2p)
3243 {
3244         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3245         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3246         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3247                 /*
3248                  * Better remain on operating channel instead of listen channel
3249                  * when running a group.
3250                  */
3251                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
3252                         "active GO role - wait on operating channel");
3253                 p2p_set_timeout(p2p, 0, 100000);
3254                 return;
3255         }
3256         p2p_listen_in_find(p2p, 0);
3257 }
3258
3259
3260 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3261 {
3262         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3263                 p2p_set_state(p2p, P2P_INVITE);
3264                 p2p_invite_send(p2p, p2p->invite_peer,
3265                                 p2p->invite_go_dev_addr);
3266         } else {
3267                 if (p2p->invite_peer) {
3268                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3269                                 "P2P: Invitation Request retry limit reached");
3270                         if (p2p->cfg->invitation_result)
3271                                 p2p->cfg->invitation_result(
3272                                         p2p->cfg->cb_ctx, -1, NULL);
3273                 }
3274                 p2p_set_state(p2p, P2P_IDLE);
3275         }
3276 }
3277
3278
3279 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3280 {
3281         struct p2p_data *p2p = eloop_ctx;
3282
3283         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
3284                 p2p_state_txt(p2p->state));
3285
3286         p2p->in_listen = 0;
3287
3288         switch (p2p->state) {
3289         case P2P_IDLE:
3290                 /* Check if we timed out waiting for PD req */
3291                 if (p2p->pending_action_state == P2P_PENDING_PD)
3292                         p2p_timeout_prov_disc_req(p2p);
3293                 break;
3294         case P2P_SEARCH:
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                 if (p2p->search_delay && !p2p->in_search_delay) {
3299                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3300                                 "search operation by %u ms",
3301                                 p2p->search_delay);
3302                         p2p->in_search_delay = 1;
3303                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3304                                         (p2p->search_delay % 1000) * 1000);
3305                         break;
3306                 }
3307                 p2p->in_search_delay = 0;
3308                 p2p_search(p2p);
3309                 break;
3310         case P2P_CONNECT:
3311                 p2p_timeout_connect(p2p);
3312                 break;
3313         case P2P_CONNECT_LISTEN:
3314                 p2p_timeout_connect_listen(p2p);
3315                 break;
3316         case P2P_GO_NEG:
3317                 break;
3318         case P2P_LISTEN_ONLY:
3319                 /* Check if we timed out waiting for PD req */
3320                 if (p2p->pending_action_state == P2P_PENDING_PD)
3321                         p2p_timeout_prov_disc_req(p2p);
3322
3323                 if (p2p->ext_listen_only) {
3324                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3325                                 "P2P: Extended Listen Timing - Listen State "
3326                                 "completed");
3327                         p2p->ext_listen_only = 0;
3328                         p2p_set_state(p2p, P2P_IDLE);
3329                 }
3330                 break;
3331         case P2P_WAIT_PEER_CONNECT:
3332                 p2p_timeout_wait_peer_connect(p2p);
3333                 break;
3334         case P2P_WAIT_PEER_IDLE:
3335                 p2p_timeout_wait_peer_idle(p2p);
3336                 break;
3337         case P2P_SD_DURING_FIND:
3338                 p2p_timeout_sd_during_find(p2p);
3339                 break;
3340         case P2P_PROVISIONING:
3341                 break;
3342         case P2P_PD_DURING_FIND:
3343                 p2p_timeout_prov_disc_during_find(p2p);
3344                 break;
3345         case P2P_INVITE:
3346                 p2p_timeout_invite(p2p);
3347                 break;
3348         case P2P_INVITE_LISTEN:
3349                 p2p_timeout_invite_listen(p2p);
3350                 break;
3351         case P2P_SEARCH_WHEN_READY:
3352                 break;
3353         case P2P_CONTINUE_SEARCH_WHEN_READY:
3354                 break;
3355         }
3356 }
3357
3358
3359 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3360 {
3361         struct p2p_device *dev;
3362
3363         dev = p2p_get_device(p2p, peer_addr);
3364         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3365                 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3366         if (dev == NULL) {
3367                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3368                         " unknown", MAC2STR(peer_addr));
3369                 return -1;
3370         }
3371         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3372         dev->flags |= P2P_DEV_USER_REJECTED;
3373         return 0;
3374 }
3375
3376
3377 const char * p2p_wps_method_text(enum p2p_wps_method method)
3378 {
3379         switch (method) {
3380         case WPS_NOT_READY:
3381                 return "not-ready";
3382         case WPS_PIN_DISPLAY:
3383                 return "Display";
3384         case WPS_PIN_KEYPAD:
3385                 return "Keypad";
3386         case WPS_PBC:
3387                 return "PBC";
3388         }
3389
3390         return "??";
3391 }
3392
3393
3394 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3395 {
3396         switch (go_state) {
3397         case UNKNOWN_GO:
3398                 return "unknown";
3399         case LOCAL_GO:
3400                 return "local";
3401         case  REMOTE_GO:
3402                 return "remote";
3403         }
3404
3405         return "??";
3406 }
3407
3408
3409 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3410                                                const u8 *addr, int next)
3411 {
3412         struct p2p_device *dev;
3413
3414         if (addr)
3415                 dev = p2p_get_device(p2p, addr);
3416         else
3417                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3418
3419         if (dev && next) {
3420                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3421                 if (&dev->list == &p2p->devices)
3422                         dev = NULL;
3423         }
3424
3425         if (dev == NULL)
3426                 return NULL;
3427
3428         return &dev->info;
3429 }
3430
3431
3432 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3433                           char *buf, size_t buflen)
3434 {
3435         struct p2p_device *dev;
3436         int res;
3437         char *pos, *end;
3438         struct os_time now;
3439
3440         if (info == NULL)
3441                 return -1;
3442
3443         dev = (struct p2p_device *) (((u8 *) info) -
3444                                      offsetof(struct p2p_device, info));
3445
3446         pos = buf;
3447         end = buf + buflen;
3448
3449         os_get_time(&now);
3450         res = os_snprintf(pos, end - pos,
3451                           "age=%d\n"
3452                           "listen_freq=%d\n"
3453                           "wps_method=%s\n"
3454                           "interface_addr=" MACSTR "\n"
3455                           "member_in_go_dev=" MACSTR "\n"
3456                           "member_in_go_iface=" MACSTR "\n"
3457                           "go_neg_req_sent=%d\n"
3458                           "go_state=%s\n"
3459                           "dialog_token=%u\n"
3460                           "intended_addr=" MACSTR "\n"
3461                           "country=%c%c\n"
3462                           "oper_freq=%d\n"
3463                           "req_config_methods=0x%x\n"
3464                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3465                           "status=%d\n"
3466                           "wait_count=%u\n"
3467                           "invitation_reqs=%u\n",
3468                           (int) (now.sec - dev->last_seen.sec),
3469                           dev->listen_freq,
3470                           p2p_wps_method_text(dev->wps_method),
3471                           MAC2STR(dev->interface_addr),
3472                           MAC2STR(dev->member_in_go_dev),
3473                           MAC2STR(dev->member_in_go_iface),
3474                           dev->go_neg_req_sent,
3475                           p2p_go_state_text(dev->go_state),
3476                           dev->dialog_token,
3477                           MAC2STR(dev->intended_addr),
3478                           dev->country[0] ? dev->country[0] : '_',
3479                           dev->country[1] ? dev->country[1] : '_',
3480                           dev->oper_freq,
3481                           dev->req_config_methods,
3482                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3483                           "[PROBE_REQ_ONLY]" : "",
3484                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3485                           dev->flags & P2P_DEV_NOT_YET_READY ?
3486                           "[NOT_YET_READY]" : "",
3487                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3488                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3489                           "",
3490                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3491                           "[PD_PEER_DISPLAY]" : "",
3492                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3493                           "[PD_PEER_KEYPAD]" : "",
3494                           dev->flags & P2P_DEV_USER_REJECTED ?
3495                           "[USER_REJECTED]" : "",
3496                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3497                           "[PEER_WAITING_RESPONSE]" : "",
3498                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3499                           "[PREFER_PERSISTENT_GROUP]" : "",
3500                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3501                           "[WAIT_GO_NEG_RESPONSE]" : "",
3502                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3503                           "[WAIT_GO_NEG_CONFIRM]" : "",
3504                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3505                           "[GROUP_CLIENT_ONLY]" : "",
3506                           dev->flags & P2P_DEV_FORCE_FREQ ?
3507                           "[FORCE_FREQ]" : "",
3508                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3509                           "[PD_FOR_JOIN]" : "",
3510                           dev->status,
3511                           dev->wait_count,
3512                           dev->invitation_reqs);
3513         if (res < 0 || res >= end - pos)
3514                 return pos - buf;
3515         pos += res;
3516
3517         if (dev->ext_listen_period) {
3518                 res = os_snprintf(pos, end - pos,
3519                                   "ext_listen_period=%u\n"
3520                                   "ext_listen_interval=%u\n",
3521                                   dev->ext_listen_period,
3522                                   dev->ext_listen_interval);
3523                 if (res < 0 || res >= end - pos)
3524                         return pos - buf;
3525                 pos += res;
3526         }
3527
3528         if (dev->oper_ssid_len) {
3529                 res = os_snprintf(pos, end - pos,
3530                                   "oper_ssid=%s\n",
3531                                   wpa_ssid_txt(dev->oper_ssid,
3532                                                dev->oper_ssid_len));
3533                 if (res < 0 || res >= end - pos)
3534                         return pos - buf;
3535                 pos += res;
3536         }
3537
3538 #ifdef CONFIG_WIFI_DISPLAY
3539         if (dev->info.wfd_subelems) {
3540                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3541                 if (res < 0 || res >= end - pos)
3542                         return pos - buf;
3543                 pos += res;
3544
3545                 pos += wpa_snprintf_hex(pos, end - pos,
3546                                         wpabuf_head(dev->info.wfd_subelems),
3547                                         wpabuf_len(dev->info.wfd_subelems));
3548
3549                 res = os_snprintf(pos, end - pos, "\n");
3550                 if (res < 0 || res >= end - pos)
3551                         return pos - buf;
3552                 pos += res;
3553         }
3554 #endif /* CONFIG_WIFI_DISPLAY */
3555
3556         return pos - buf;
3557 }
3558
3559
3560 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3561 {
3562         return p2p_get_device(p2p, addr) != NULL;
3563 }
3564
3565
3566 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3567 {
3568         if (enabled) {
3569                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3570                         "discoverability enabled");
3571                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3572         } else {
3573                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3574                         "discoverability disabled");
3575                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3576         }
3577 }
3578
3579
3580 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3581                                               u32 duration2, u32 interval2)
3582 {
3583         struct wpabuf *req;
3584         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3585         u8 *len;
3586
3587         req = wpabuf_alloc(100);
3588         if (req == NULL)
3589                 return NULL;
3590
3591         if (duration1 || interval1) {
3592                 os_memset(&desc1, 0, sizeof(desc1));
3593                 desc1.count_type = 1;
3594                 desc1.duration = duration1;
3595                 desc1.interval = interval1;
3596                 ptr1 = &desc1;
3597
3598                 if (duration2 || interval2) {
3599                         os_memset(&desc2, 0, sizeof(desc2));
3600                         desc2.count_type = 2;
3601                         desc2.duration = duration2;
3602                         desc2.interval = interval2;
3603                         ptr2 = &desc2;
3604                 }
3605         }
3606
3607         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3608         len = p2p_buf_add_ie_hdr(req);
3609         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3610         p2p_buf_update_ie_hdr(req, len);
3611
3612         return req;
3613 }
3614
3615
3616 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3617                      const u8 *own_interface_addr, unsigned int freq,
3618                      u32 duration1, u32 interval1, u32 duration2,
3619                      u32 interval2)
3620 {
3621         struct wpabuf *req;
3622
3623         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3624                 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3625                 "int1=%u dur2=%u int2=%u",
3626                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3627                 freq, duration1, interval1, duration2, interval2);
3628
3629         req = p2p_build_presence_req(duration1, interval1, duration2,
3630                                      interval2);
3631         if (req == NULL)
3632                 return -1;
3633
3634         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3635         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3636                             go_interface_addr,
3637                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3638                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3639                         "P2P: Failed to send Action frame");
3640         }
3641         wpabuf_free(req);
3642
3643         return 0;
3644 }
3645
3646
3647 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3648                                                size_t noa_len, u8 dialog_token)
3649 {
3650         struct wpabuf *resp;
3651         u8 *len;
3652
3653         resp = wpabuf_alloc(100 + noa_len);
3654         if (resp == NULL)
3655                 return NULL;
3656
3657         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3658         len = p2p_buf_add_ie_hdr(resp);
3659         p2p_buf_add_status(resp, status);
3660         if (noa) {
3661                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3662                 wpabuf_put_le16(resp, noa_len);
3663                 wpabuf_put_data(resp, noa, noa_len);
3664         } else
3665                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3666         p2p_buf_update_ie_hdr(resp, len);
3667
3668         return resp;
3669 }
3670
3671
3672 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3673                                      const u8 *sa, const u8 *data, size_t len,
3674                                      int rx_freq)
3675 {
3676         struct p2p_message msg;
3677         u8 status;
3678         struct wpabuf *resp;
3679         size_t g;
3680         struct p2p_group *group = NULL;
3681         int parsed = 0;
3682         u8 noa[50];
3683         int noa_len;
3684
3685         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3686                 "P2P: Received P2P Action - P2P Presence Request");
3687
3688         for (g = 0; g < p2p->num_groups; g++) {
3689                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3690                               ETH_ALEN) == 0) {
3691                         group = p2p->groups[g];
3692                         break;
3693                 }
3694         }
3695         if (group == NULL) {
3696                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3697                         "P2P: Ignore P2P Presence Request for unknown group "
3698                         MACSTR, MAC2STR(da));
3699                 return;
3700         }
3701
3702         if (p2p_parse(data, len, &msg) < 0) {
3703                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3704                         "P2P: Failed to parse P2P Presence Request");
3705                 status = P2P_SC_FAIL_INVALID_PARAMS;
3706                 goto fail;
3707         }
3708         parsed = 1;
3709
3710         if (msg.noa == NULL) {
3711                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3712                         "P2P: No NoA attribute in P2P Presence Request");
3713                 status = P2P_SC_FAIL_INVALID_PARAMS;
3714                 goto fail;
3715         }
3716
3717         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3718
3719 fail:
3720         if (p2p->cfg->get_noa)
3721                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3722                                             sizeof(noa));
3723         else
3724                 noa_len = -1;
3725         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3726                                        noa_len > 0 ? noa_len : 0,
3727                                        msg.dialog_token);
3728         if (parsed)
3729                 p2p_parse_free(&msg);
3730         if (resp == NULL)
3731                 return;
3732
3733         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3734         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3735                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3736                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3737                         "P2P: Failed to send Action frame");
3738         }
3739         wpabuf_free(resp);
3740 }
3741
3742
3743 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3744                                       const u8 *sa, const u8 *data, size_t len)
3745 {
3746         struct p2p_message msg;
3747
3748         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3749                 "P2P: Received P2P Action - P2P Presence Response");
3750
3751         if (p2p_parse(data, len, &msg) < 0) {
3752                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3753                         "P2P: Failed to parse P2P Presence Response");
3754                 return;
3755         }
3756
3757         if (msg.status == NULL || msg.noa == NULL) {
3758                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3759                         "P2P: No Status or NoA attribute in P2P Presence "
3760                         "Response");
3761                 p2p_parse_free(&msg);
3762                 return;
3763         }
3764
3765         if (*msg.status) {
3766                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3767                         "P2P: P2P Presence Request was rejected: status %u",
3768                         *msg.status);
3769                 p2p_parse_free(&msg);
3770                 return;
3771         }
3772
3773         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3774                 "P2P: P2P Presence Request was accepted");
3775         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3776                     msg.noa, msg.noa_len);
3777         /* TODO: process NoA */
3778         p2p_parse_free(&msg);
3779 }
3780
3781
3782 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3783 {
3784         struct p2p_data *p2p = eloop_ctx;
3785
3786         if (p2p->ext_listen_interval) {
3787                 /* Schedule next extended listen timeout */
3788                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3789                                        p2p->ext_listen_interval_usec,
3790                                        p2p_ext_listen_timeout, p2p, NULL);
3791         }
3792
3793         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3794                 /*
3795                  * This should not really happen, but it looks like the Listen
3796                  * command may fail is something else (e.g., a scan) was
3797                  * running at an inconvenient time. As a workaround, allow new
3798                  * Extended Listen operation to be started.
3799                  */
3800                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3801                         "Extended Listen operation had not been completed - "
3802                         "try again");
3803                 p2p->ext_listen_only = 0;
3804                 p2p_set_state(p2p, P2P_IDLE);
3805         }
3806
3807         if (p2p->state != P2P_IDLE) {
3808                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3809                         "Listen timeout in active state (%s)",
3810                         p2p_state_txt(p2p->state));
3811                 return;
3812         }
3813
3814         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3815         p2p->ext_listen_only = 1;
3816         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3817                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3818                         "Listen state for Extended Listen Timing");
3819                 p2p->ext_listen_only = 0;
3820         }
3821 }
3822
3823
3824 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3825                    unsigned int interval)
3826 {
3827         if (period > 65535 || interval > 65535 || period > interval ||
3828             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3829                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3830                         "P2P: Invalid Extended Listen Timing request: "
3831                         "period=%u interval=%u", period, interval);
3832                 return -1;
3833         }
3834
3835         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3836
3837         if (interval == 0) {
3838                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3839                         "P2P: Disabling Extended Listen Timing");
3840                 p2p->ext_listen_period = 0;
3841                 p2p->ext_listen_interval = 0;
3842                 return 0;
3843         }
3844
3845         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3846                 "P2P: Enabling Extended Listen Timing: period %u msec, "
3847                 "interval %u msec", period, interval);
3848         p2p->ext_listen_period = period;
3849         p2p->ext_listen_interval = interval;
3850         p2p->ext_listen_interval_sec = interval / 1000;
3851         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3852
3853         eloop_register_timeout(p2p->ext_listen_interval_sec,
3854                                p2p->ext_listen_interval_usec,
3855                                p2p_ext_listen_timeout, p2p, NULL);
3856
3857         return 0;
3858 }
3859
3860
3861 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3862                       const u8 *ie, size_t ie_len)
3863 {
3864         struct p2p_message msg;
3865
3866         if (bssid == NULL || ie == NULL)
3867                 return;
3868
3869         os_memset(&msg, 0, sizeof(msg));
3870         if (p2p_parse_ies(ie, ie_len, &msg))
3871                 return;
3872         if (msg.minor_reason_code == NULL)
3873                 return;
3874
3875         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3876                 "P2P: Deauthentication 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_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3885                         const u8 *ie, size_t ie_len)
3886 {
3887         struct p2p_message msg;
3888
3889         if (bssid == NULL || ie == NULL)
3890                 return;
3891
3892         os_memset(&msg, 0, sizeof(msg));
3893         if (p2p_parse_ies(ie, ie_len, &msg))
3894                 return;
3895         if (msg.minor_reason_code == NULL)
3896                 return;
3897
3898         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3899                 "P2P: Disassociation notification BSSID " MACSTR
3900                 " reason_code=%u minor_reason_code=%u",
3901                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3902
3903         p2p_parse_free(&msg);
3904 }
3905
3906
3907 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3908 {
3909         if (enabled) {
3910                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3911                         "Device operations enabled");
3912                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3913         } else {
3914                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3915                         "Device operations disabled");
3916                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3917         }
3918 }
3919
3920
3921 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3922 {
3923         if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3924                 return -1;
3925
3926         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3927                 "reg_class %u channel %u", reg_class, channel);
3928         p2p->cfg->reg_class = reg_class;
3929         p2p->cfg->channel = channel;
3930
3931         return 0;
3932 }
3933
3934
3935 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3936 {
3937         wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3938         if (postfix == NULL) {
3939                 p2p->cfg->ssid_postfix_len = 0;
3940                 return 0;
3941         }
3942         if (len > sizeof(p2p->cfg->ssid_postfix))
3943                 return -1;
3944         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3945         p2p->cfg->ssid_postfix_len = len;
3946         return 0;
3947 }
3948
3949
3950 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3951                          int cfg_op_channel)
3952 {
3953         if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3954             < 0)
3955                 return -1;
3956
3957         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3958                 "reg_class %u channel %u", op_reg_class, op_channel);
3959         p2p->cfg->op_reg_class = op_reg_class;
3960         p2p->cfg->op_channel = op_channel;
3961         p2p->cfg->cfg_op_channel = cfg_op_channel;
3962         return 0;
3963 }
3964
3965
3966 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3967                       const struct p2p_channel *pref_chan)
3968 {
3969         struct p2p_channel *n;
3970
3971         if (pref_chan) {
3972                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3973                 if (n == NULL)
3974                         return -1;
3975                 os_memcpy(n, pref_chan,
3976                           num_pref_chan * sizeof(struct p2p_channel));
3977         } else
3978                 n = NULL;
3979
3980         os_free(p2p->cfg->pref_chan);
3981         p2p->cfg->pref_chan = n;
3982         p2p->cfg->num_pref_chan = num_pref_chan;
3983
3984         return 0;
3985 }
3986
3987
3988 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3989                            u8 *iface_addr)
3990 {
3991         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3992         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3993                 return -1;
3994         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3995         return 0;
3996 }
3997
3998
3999 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4000                            u8 *dev_addr)
4001 {
4002         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4003         if (dev == NULL)
4004                 return -1;
4005         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4006         return 0;
4007 }
4008
4009
4010 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4011 {
4012         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4013         if (is_zero_ether_addr(p2p->peer_filter))
4014                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
4015                         "filter");
4016         else
4017                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
4018                         "filter for " MACSTR, MAC2STR(p2p->peer_filter));
4019 }
4020
4021
4022 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4023 {
4024         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
4025                 enabled ? "enabled" : "disabled");
4026         if (p2p->cross_connect == enabled)
4027                 return;
4028         p2p->cross_connect = enabled;
4029         /* TODO: may need to tear down any action group where we are GO(?) */
4030 }
4031
4032
4033 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4034 {
4035         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4036         if (dev == NULL)
4037                 return -1;
4038         if (dev->oper_freq <= 0)
4039                 return -1;
4040         return dev->oper_freq;
4041 }
4042
4043
4044 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4045 {
4046         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
4047                 enabled ? "enabled" : "disabled");
4048         p2p->cfg->p2p_intra_bss = enabled;
4049 }
4050
4051
4052 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
4053 {
4054         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
4055         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4056 }
4057
4058
4059 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4060                     const u8 *src, const u8 *bssid, const u8 *buf,
4061                     size_t len, unsigned int wait_time)
4062 {
4063         if (p2p->p2p_scan_running) {
4064                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
4065                         "frame TX until p2p_scan completes");
4066                 if (p2p->after_scan_tx) {
4067                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
4068                                 "previous pending Action frame TX");
4069                         os_free(p2p->after_scan_tx);
4070                 }
4071                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4072                                                len);
4073                 if (p2p->after_scan_tx == NULL)
4074                         return -1;
4075                 p2p->after_scan_tx->freq = freq;
4076                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4077                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4078                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4079                 p2p->after_scan_tx->len = len;
4080                 p2p->after_scan_tx->wait_time = wait_time;
4081                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4082                 return 0;
4083         }
4084
4085         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4086                                      buf, len, wait_time);
4087 }
4088
4089
4090 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4091                            int freq_overall)
4092 {
4093         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
4094                 "  5 GHz: %d,  overall: %d", freq_24, freq_5, freq_overall);
4095         p2p->best_freq_24 = freq_24;
4096         p2p->best_freq_5 = freq_5;
4097         p2p->best_freq_overall = freq_overall;
4098 }
4099
4100
4101 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4102 {
4103         if (p2p == NULL || p2p->go_neg_peer == NULL)
4104                 return NULL;
4105         return p2p->go_neg_peer->info.p2p_device_addr;
4106 }
4107
4108
4109 const struct p2p_peer_info *
4110 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4111 {
4112         struct p2p_device *dev;
4113
4114         if (addr) {
4115                 dev = p2p_get_device(p2p, addr);
4116                 if (!dev)
4117                         return NULL;
4118
4119                 if (!next) {
4120                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4121                                 return NULL;
4122
4123                         return &dev->info;
4124                 } else {
4125                         do {
4126                                 dev = dl_list_first(&dev->list,
4127                                                     struct p2p_device,
4128                                                     list);
4129                                 if (&dev->list == &p2p->devices)
4130                                         return NULL;
4131                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4132                 }
4133         } else {
4134                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4135                 if (!dev)
4136                         return NULL;
4137                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4138                         dev = dl_list_first(&dev->list,
4139                                             struct p2p_device,
4140                                             list);
4141                         if (&dev->list == &p2p->devices)
4142                                 return NULL;
4143                 }
4144         }
4145
4146         return &dev->info;
4147 }
4148
4149
4150 int p2p_in_progress(struct p2p_data *p2p)
4151 {
4152         if (p2p == NULL)
4153                 return 0;
4154         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4155             p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4156                 return 2;
4157         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4158 }
4159
4160
4161 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4162                             u8 client_timeout)
4163 {
4164         if (p2p) {
4165                 p2p->go_timeout = go_timeout;
4166                 p2p->client_timeout = client_timeout;
4167         }
4168 }
4169
4170
4171 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4172 {
4173         if (p2p && p2p->search_delay < delay)
4174                 p2p->search_delay = delay;
4175 }
4176
4177
4178 #ifdef CONFIG_WIFI_DISPLAY
4179
4180 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4181 {
4182         size_t g;
4183         struct p2p_group *group;
4184
4185         for (g = 0; g < p2p->num_groups; g++) {
4186                 group = p2p->groups[g];
4187                 p2p_group_update_ies(group);
4188         }
4189 }
4190
4191
4192 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4193 {
4194         wpabuf_free(p2p->wfd_ie_beacon);
4195         p2p->wfd_ie_beacon = ie;
4196         p2p_update_wfd_ie_groups(p2p);
4197         return 0;
4198 }
4199
4200
4201 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4202 {
4203         wpabuf_free(p2p->wfd_ie_probe_req);
4204         p2p->wfd_ie_probe_req = ie;
4205         return 0;
4206 }
4207
4208
4209 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4210 {
4211         wpabuf_free(p2p->wfd_ie_probe_resp);
4212         p2p->wfd_ie_probe_resp = ie;
4213         p2p_update_wfd_ie_groups(p2p);
4214         return 0;
4215 }
4216
4217
4218 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4219 {
4220         wpabuf_free(p2p->wfd_ie_assoc_req);
4221         p2p->wfd_ie_assoc_req = ie;
4222         return 0;
4223 }
4224
4225
4226 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4227 {
4228         wpabuf_free(p2p->wfd_ie_invitation);
4229         p2p->wfd_ie_invitation = ie;
4230         return 0;
4231 }
4232
4233
4234 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4235 {
4236         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4237         p2p->wfd_ie_prov_disc_req = ie;
4238         return 0;
4239 }
4240
4241
4242 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4243 {
4244         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4245         p2p->wfd_ie_prov_disc_resp = ie;
4246         return 0;
4247 }
4248
4249
4250 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4251 {
4252         wpabuf_free(p2p->wfd_ie_go_neg);
4253         p2p->wfd_ie_go_neg = ie;
4254         return 0;
4255 }
4256
4257
4258 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4259 {
4260         wpabuf_free(p2p->wfd_dev_info);
4261         if (elem) {
4262                 p2p->wfd_dev_info = wpabuf_dup(elem);
4263                 if (p2p->wfd_dev_info == NULL)
4264                         return -1;
4265         } else
4266                 p2p->wfd_dev_info = NULL;
4267
4268         return 0;
4269 }
4270
4271
4272 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4273 {
4274         wpabuf_free(p2p->wfd_assoc_bssid);
4275         if (elem) {
4276                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4277                 if (p2p->wfd_assoc_bssid == NULL)
4278                         return -1;
4279         } else
4280                 p2p->wfd_assoc_bssid = NULL;
4281
4282         return 0;
4283 }
4284
4285
4286 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4287                                   const struct wpabuf *elem)
4288 {
4289         wpabuf_free(p2p->wfd_coupled_sink_info);
4290         if (elem) {
4291                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4292                 if (p2p->wfd_coupled_sink_info == NULL)
4293                         return -1;
4294         } else
4295                 p2p->wfd_coupled_sink_info = NULL;
4296
4297         return 0;
4298 }
4299
4300 #endif /* CONFIG_WIFI_DISPLAY */
4301
4302
4303 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4304                      int max_disc_tu)
4305 {
4306         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4307                 return -1;
4308
4309         p2p->min_disc_int = min_disc_int;
4310         p2p->max_disc_int = max_disc_int;
4311         p2p->max_disc_tu = max_disc_tu;
4312         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: "
4313                 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int,
4314                 max_disc_tu);
4315
4316         return 0;
4317 }