src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "common/ieee802_11_common.h"
  21 #include "wps/wps_i.h"
  22 #include "p2p_i.h"
  23 #include "p2p.h"
  24
  25
  26 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  27 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  28 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  29                                      const u8 *sa, const u8 *data, size_t len,
  30                                      int rx_freq);
  31 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  32                                       const u8 *sa, const u8 *data,
  33                                       size_t len);
  34 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  35 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  36
  37
  38 /*
  39  * p2p_scan recovery timeout
  40  *
  41  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  42  * timeout for this to avoid hitting P2P timeout unnecessarily.
  43  */
  44 #define P2P_SCAN_TIMEOUT 35
  45
  46 /**
  47  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  48  * entries will be removed
  49  */
  50 #define P2P_PEER_EXPIRATION_AGE 300
  51
  52 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  53
  54 static void p2p_expire_peers(struct p2p_data *p2p)
  55 {
  56         struct p2p_device *dev, *n;
  57         struct os_time now;
  58
  59         os_get_time(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
  64                         "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
  65                 dl_list_del(&dev->list);
  66                 p2p_device_free(p2p, dev);
  67         }
  68 }
  69
  70
  71 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
  72 {
  73         struct p2p_data *p2p = eloop_ctx;
  74         p2p_expire_peers(p2p);
  75         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
  76                                p2p_expiration_timeout, p2p, NULL);
  77 }
  78
  79
  80 static const char * p2p_state_txt(int state)
  81 {
  82         switch (state) {
  83         case P2P_IDLE:
  84                 return "IDLE";
  85         case P2P_SEARCH:
  86                 return "SEARCH";
  87         case P2P_CONNECT:
  88                 return "CONNECT";
  89         case P2P_CONNECT_LISTEN:
  90                 return "CONNECT_LISTEN";
  91         case P2P_GO_NEG:
  92                 return "GO_NEG";
  93         case P2P_LISTEN_ONLY:
  94                 return "LISTEN_ONLY";
  95         case P2P_WAIT_PEER_CONNECT:
  96                 return "WAIT_PEER_CONNECT";
  97         case P2P_WAIT_PEER_IDLE:
  98                 return "WAIT_PEER_IDLE";
  99         case P2P_SD_DURING_FIND:
 100                 return "SD_DURING_FIND";
 101         case P2P_PROVISIONING:
 102                 return "PROVISIONING";
 103         case P2P_PD_DURING_FIND:
 104                 return "PD_DURING_FIND";
 105         case P2P_INVITE:
 106                 return "INVITE";
 107         case P2P_INVITE_LISTEN:
 108                 return "INVITE_LISTEN";
 109         default:
 110                 return "?";
 111         }
 112 }
 113
 114
 115 void p2p_set_state(struct p2p_data *p2p, int new_state)
 116 {
 117         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
 118                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 119         p2p->state = new_state;
 120 }
 121
 122
 123 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 124 {
 125         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 126                 "P2P: Set timeout (state=%s): %u.%06u sec",
 127                 p2p_state_txt(p2p->state), sec, usec);
 128         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 129         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 130 }
 131
 132
 133 void p2p_clear_timeout(struct p2p_data *p2p)
 134 {
 135         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
 136                 p2p_state_txt(p2p->state));
 137         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 138 }
 139
 140
 141 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 142                        int status)
 143 {
 144         struct p2p_go_neg_results res;
 145         p2p_clear_timeout(p2p);
 146         p2p_set_state(p2p, P2P_IDLE);
 147         p2p->go_neg_peer = NULL;
 148
 149         os_memset(&res, 0, sizeof(res));
 150         res.status = status;
 151         if (peer) {
 152                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 153                           ETH_ALEN);
 154                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 155                           ETH_ALEN);
 156         }
 157         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 158 }
 159
 160
 161 static void p2p_listen_in_find(struct p2p_data *p2p)
 162 {
 163         unsigned int r, tu;
 164         int freq;
 165         struct wpabuf *ies;
 166
 167         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 168                 "P2P: Starting short listen state (state=%s)",
 169                 p2p_state_txt(p2p->state));
 170
 171         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 172                                    p2p->cfg->channel);
 173         if (freq < 0) {
 174                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 175                         "P2P: Unknown regulatory class/channel");
 176                 return;
 177         }
 178
 179         os_get_random((u8 *) &r, sizeof(r));
 180         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 181               p2p->min_disc_int) * 100;
 182
 183         p2p->pending_listen_freq = freq;
 184         p2p->pending_listen_sec = 0;
 185         p2p->pending_listen_usec = 1024 * tu;
 186
 187         ies = p2p_build_probe_resp_ies(p2p);
 188         if (ies == NULL)
 189                 return;
 190
 191         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 192                     ies) < 0) {
 193                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 194                         "P2P: Failed to start listen mode");
 195                 p2p->pending_listen_freq = 0;
 196         }
 197         wpabuf_free(ies);
 198 }
 199
 200
 201 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 202 {
 203         int freq;
 204         struct wpabuf *ies;
 205
 206         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 207                 "P2P: Going to listen(only) state");
 208
 209         freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
 210                                    p2p->cfg->channel);
 211         if (freq < 0) {
 212                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 213                         "P2P: Unknown regulatory class/channel");
 214                 return -1;
 215         }
 216
 217         p2p->pending_listen_freq = freq;
 218         p2p->pending_listen_sec = timeout / 1000;
 219         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 220
 221         if (p2p->p2p_scan_running) {
 222                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 223                         "P2P: p2p_scan running - delay start of listen state");
 224                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 225                 return 0;
 226         }
 227
 228         ies = p2p_build_probe_resp_ies(p2p);
 229         if (ies == NULL)
 230                 return -1;
 231
 232         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 233                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 234                         "P2P: Failed to start listen mode");
 235                 p2p->pending_listen_freq = 0;
 236                 wpabuf_free(ies);
 237                 return -1;
 238         }
 239         wpabuf_free(ies);
 240
 241         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 242
 243         return 0;
 244 }
 245
 246
 247 static void p2p_device_clear_reported(struct p2p_data *p2p)
 248 {
 249         struct p2p_device *dev;
 250         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 251                 dev->flags &= ~P2P_DEV_REPORTED;
 252 }
 253
 254
 255 /**
 256  * p2p_get_device - Fetch a peer entry
 257  * @p2p: P2P module context from p2p_init()
 258  * @addr: P2P Device Address of the peer
 259  * Returns: Pointer to the device entry or %NULL if not found
 260  */
 261 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 262 {
 263         struct p2p_device *dev;
 264         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 265                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 266                         return dev;
 267         }
 268         return NULL;
 269 }
 270
 271
 272 /**
 273  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 274  * @p2p: P2P module context from p2p_init()
 275  * @addr: P2P Interface Address of the peer
 276  * Returns: Pointer to the device entry or %NULL if not found
 277  */
 278 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 279                                              const u8 *addr)
 280 {
 281         struct p2p_device *dev;
 282         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 283                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 284                         return dev;
 285         }
 286         return NULL;
 287 }
 288
 289
 290 /**
 291  * p2p_create_device - Create a peer entry
 292  * @p2p: P2P module context from p2p_init()
 293  * @addr: P2P Device Address of the peer
 294  * Returns: Pointer to the device entry or %NULL on failure
 295  *
 296  * If there is already an entry for the peer, it will be returned instead of
 297  * creating a new one.
 298  */
 299 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 300                                              const u8 *addr)
 301 {
 302         struct p2p_device *dev, *oldest = NULL;
 303         size_t count = 0;
 304
 305         dev = p2p_get_device(p2p, addr);
 306         if (dev)
 307                 return dev;
 308
 309         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 310                 count++;
 311                 if (oldest == NULL ||
 312                     os_time_before(&dev->last_seen, &oldest->last_seen))
 313                         oldest = dev;
 314         }
 315         if (count + 1 > p2p->cfg->max_peers && oldest) {
 316                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 317                         "P2P: Remove oldest peer entry to make room for a new "
 318                         "peer");
 319                 dl_list_del(&oldest->list);
 320                 p2p_device_free(p2p, oldest);
 321         }
 322
 323         dev = os_zalloc(sizeof(*dev));
 324         if (dev == NULL)
 325                 return NULL;
 326         dl_list_add(&p2p->devices, &dev->list);
 327         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 328
 329         return dev;
 330 }
 331
 332
 333 static void p2p_copy_client_info(struct p2p_device *dev,
 334                                  struct p2p_client_info *cli)
 335 {
 336         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 337         dev->info.device_name[cli->dev_name_len] = '\0';
 338         dev->info.dev_capab = cli->dev_capab;
 339         dev->info.config_methods = cli->config_methods;
 340         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 341         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 342         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 343                   dev->info.wps_sec_dev_type_list_len);
 344 }
 345
 346
 347 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 348                                  const u8 *go_interface_addr, int freq,
 349                                  const u8 *gi, size_t gi_len)
 350 {
 351         struct p2p_group_info info;
 352         size_t c;
 353         struct p2p_device *dev;
 354
 355         if (gi == NULL)
 356                 return 0;
 357
 358         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 359                 return -1;
 360
 361         /*
 362          * Clear old data for this group; if the devices are still in the
 363          * group, the information will be restored in the loop following this.
 364          */
 365         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 366                 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
 367                               ETH_ALEN) == 0) {
 368                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 369                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 370                 }
 371         }
 372
 373         for (c = 0; c < info.num_clients; c++) {
 374                 struct p2p_client_info *cli = &info.client[c];
 375                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 376                 if (dev) {
 377                         /*
 378                          * Update information only if we have not received this
 379                          * directly from the client.
 380                          */
 381                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 382                                           P2P_DEV_PROBE_REQ_ONLY))
 383                                 p2p_copy_client_info(dev, cli);
 384                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 385                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 386                         }
 387                 } else {
 388                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 389                         if (dev == NULL)
 390                                 continue;
 391                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 392                         p2p_copy_client_info(dev, cli);
 393                         dev->oper_freq = freq;
 394                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 395                                             dev->info.p2p_device_addr,
 396                                             &dev->info, 1);
 397                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 398                 }
 399
 400                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 401                           ETH_ALEN);
 402                 os_get_time(&dev->last_seen);
 403                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 404                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 405                           ETH_ALEN);
 406         }
 407
 408         return 0;
 409 }
 410
 411
 412 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
 413                               const struct p2p_message *msg)
 414 {
 415         os_memcpy(dev->info.device_name, msg->device_name,
 416                   sizeof(dev->info.device_name));
 417
 418         if (msg->manufacturer &&
 419             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 420                 os_memset(dev->info.manufacturer, 0,
 421                           sizeof(dev->info.manufacturer));
 422                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 423                           msg->manufacturer_len);
 424         }
 425
 426         if (msg->model_name &&
 427             msg->model_name_len < sizeof(dev->info.model_name)) {
 428                 os_memset(dev->info.model_name, 0,
 429                           sizeof(dev->info.model_name));
 430                 os_memcpy(dev->info.model_name, msg->model_name,
 431                           msg->model_name_len);
 432         }
 433
 434         if (msg->model_number &&
 435             msg->model_number_len < sizeof(dev->info.model_number)) {
 436                 os_memset(dev->info.model_number, 0,
 437                           sizeof(dev->info.model_number));
 438                 os_memcpy(dev->info.model_number, msg->model_number,
 439                           msg->model_number_len);
 440         }
 441
 442         if (msg->serial_number &&
 443             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 444                 os_memset(dev->info.serial_number, 0,
 445                           sizeof(dev->info.serial_number));
 446                 os_memcpy(dev->info.serial_number, msg->serial_number,
 447                           msg->serial_number_len);
 448         }
 449
 450         if (msg->pri_dev_type)
 451                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 452                           sizeof(dev->info.pri_dev_type));
 453         else if (msg->wps_pri_dev_type)
 454                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 455                           sizeof(dev->info.pri_dev_type));
 456
 457         if (msg->wps_sec_dev_type_list) {
 458                 os_memcpy(dev->info.wps_sec_dev_type_list,
 459                           msg->wps_sec_dev_type_list,
 460                           msg->wps_sec_dev_type_list_len);
 461                 dev->info.wps_sec_dev_type_list_len =
 462                         msg->wps_sec_dev_type_list_len;
 463         }
 464
 465         if (msg->capability) {
 466                 dev->info.dev_capab = msg->capability[0];
 467                 dev->info.group_capab = msg->capability[1];
 468         }
 469
 470         if (msg->ext_listen_timing) {
 471                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 472                 dev->ext_listen_interval =
 473                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 474         }
 475
 476         if (!probe_req) {
 477                 dev->info.config_methods = msg->config_methods ?
 478                         msg->config_methods : msg->wps_config_methods;
 479         }
 480 }
 481
 482
 483 /**
 484  * p2p_add_device - Add peer entries based on scan results
 485  * @p2p: P2P module context from p2p_init()
 486  * @addr: Source address of Beacon or Probe Response frame (may be either
 487  *      P2P Device Address or P2P Interface Address)
 488  * @level: Signal level (signal strength of the received frame from the peer)
 489  * @freq: Frequency on which the Beacon or Probe Response frame was received
 490  * @ies: IEs from the Beacon or Probe Response frame
 491  * @ies_len: Length of ies buffer in octets
 492  * Returns: 0 on success, -1 on failure
 493  *
 494  * If the scan result is for a GO, the clients in the group will also be added
 495  * to the peer table. This function can also be used with some other frames
 496  * like Provision Discovery Request that contains P2P Capability and P2P Device
 497  * Info attributes.
 498  */
 499 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
 500                    const u8 *ies, size_t ies_len)
 501 {
 502         struct p2p_device *dev;
 503         struct p2p_message msg;
 504         const u8 *p2p_dev_addr;
 505         int i;
 506
 507         os_memset(&msg, 0, sizeof(msg));
 508         if (p2p_parse_ies(ies, ies_len, &msg)) {
 509                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 510                         "P2P: Failed to parse P2P IE for a device entry");
 511                 p2p_parse_free(&msg);
 512                 return -1;
 513         }
 514
 515         if (msg.p2p_device_addr)
 516                 p2p_dev_addr = msg.p2p_device_addr;
 517         else if (msg.device_id)
 518                 p2p_dev_addr = msg.device_id;
 519         else {
 520                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 521                         "P2P: Ignore scan data without P2P Device Info or "
 522                         "P2P Device Id");
 523                 p2p_parse_free(&msg);
 524                 return -1;
 525         }
 526
 527         if (!is_zero_ether_addr(p2p->peer_filter) &&
 528             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 529                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
 530                         "filter for " MACSTR " due to peer filter",
 531                         MAC2STR(p2p_dev_addr));
 532                 return 0;
 533         }
 534
 535         dev = p2p_create_device(p2p, p2p_dev_addr);
 536         if (dev == NULL) {
 537                 p2p_parse_free(&msg);
 538                 return -1;
 539         }
 540         os_get_time(&dev->last_seen);
 541         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 542
 543         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 544                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 545         if (msg.ssid &&
 546             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 547              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 548              != 0)) {
 549                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 550                 dev->oper_ssid_len = msg.ssid[1];
 551         }
 552
 553         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 554             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 555                 int ds_freq;
 556                 if (*msg.ds_params == 14)
 557                         ds_freq = 2484;
 558                 else
 559                         ds_freq = 2407 + *msg.ds_params * 5;
 560                 if (freq != ds_freq) {
 561                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 562                                 "P2P: Update Listen frequency based on DS "
 563                                 "Parameter Set IE: %d -> %d MHz",
 564                                 freq, ds_freq);
 565                         freq = ds_freq;
 566                 }
 567         }
 568
 569         if (dev->listen_freq && dev->listen_freq != freq) {
 570                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 571                         "P2P: Update Listen frequency based on scan "
 572                         "results (" MACSTR " %d -> %d MHz (DS param %d)",
 573                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 574                         freq, msg.ds_params ? *msg.ds_params : -1);
 575         }
 576         dev->listen_freq = freq;
 577         if (msg.group_info)
 578                 dev->oper_freq = freq;
 579         dev->info.level = level;
 580
 581         p2p_copy_wps_info(dev, 0, &msg);
 582
 583         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 584                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 585                 dev->info.wps_vendor_ext[i] = NULL;
 586         }
 587
 588         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 589                 if (msg.wps_vendor_ext[i] == NULL)
 590                         break;
 591                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 592                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 593                 if (dev->info.wps_vendor_ext[i] == NULL)
 594                         break;
 595         }
 596
 597         p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
 598                               msg.group_info_len);
 599
 600         p2p_parse_free(&msg);
 601
 602         if (p2p_pending_sd_req(p2p, dev))
 603                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 604
 605         if (dev->flags & P2P_DEV_REPORTED)
 606                 return 0;
 607
 608         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 609                 "P2P: Peer found with Listen frequency %d MHz", freq);
 610         if (dev->flags & P2P_DEV_USER_REJECTED) {
 611                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 612                         "P2P: Do not report rejected device");
 613                 return 0;
 614         }
 615
 616         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 617                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 618         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 619
 620         return 0;
 621 }
 622
 623
 624 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 625 {
 626         int i;
 627
 628         if (p2p->go_neg_peer == dev)
 629                 p2p->go_neg_peer = NULL;
 630         if (p2p->invite_peer == dev)
 631                 p2p->invite_peer = NULL;
 632         if (p2p->sd_peer == dev)
 633                 p2p->sd_peer = NULL;
 634         if (p2p->pending_client_disc_go == dev)
 635                 p2p->pending_client_disc_go = NULL;
 636
 637         /* dev_lost() device, but only if it was previously dev_found() */
 638         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 639                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 640                                    dev->info.p2p_device_addr);
 641
 642         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 643                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 644                 dev->info.wps_vendor_ext[i] = NULL;
 645         }
 646
 647         os_free(dev);
 648 }
 649
 650
 651 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 652 {
 653         struct p2p_channels *c;
 654         struct p2p_reg_class *cla;
 655         size_t cl, ch;
 656         int found = 0;
 657         u8 reg_class;
 658         u8 channel;
 659         int freq;
 660
 661         c = &p2p->cfg->channels;
 662         for (cl = 0; cl < c->reg_classes; cl++) {
 663                 cla = &c->reg_class[cl];
 664                 if (cla->reg_class != p2p->last_prog_scan_class)
 665                         continue;
 666                 for (ch = 0; ch < cla->channels; ch++) {
 667                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 668                                 found = 1;
 669                                 break;
 670                         }
 671                 }
 672                 if (found)
 673                         break;
 674         }
 675
 676         if (!found) {
 677                 /* Start from beginning */
 678                 reg_class = c->reg_class[0].reg_class;
 679                 channel = c->reg_class[0].channel[0];
 680         } else {
 681                 /* Pick the next channel */
 682                 ch++;
 683                 if (ch == cla->channels) {
 684                         cl++;
 685                         if (cl == c->reg_classes)
 686                                 cl = 0;
 687                         ch = 0;
 688                 }
 689                 reg_class = c->reg_class[cl].reg_class;
 690                 channel = c->reg_class[cl].channel[ch];
 691         }
 692
 693         freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
 694         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
 695                 "channel: reg_class %u channel %u -> %d MHz",
 696                 reg_class, channel, freq);
 697         p2p->last_prog_scan_class = reg_class;
 698         p2p->last_prog_scan_chan = channel;
 699
 700         if (freq == 2412 || freq == 2437 || freq == 2462)
 701                 return 0; /* No need to add social channels */
 702         return freq;
 703 }
 704
 705
 706 static void p2p_search(struct p2p_data *p2p)
 707 {
 708         int freq = 0;
 709         enum p2p_scan_type type;
 710
 711         if (p2p->drv_in_listen) {
 712                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
 713                         "in Listen state - wait for it to end before "
 714                         "continuing");
 715                 return;
 716         }
 717         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 718
 719         if (p2p->go_neg_peer) {
 720                 /*
 721                  * Only scan the known listen frequency of the peer
 722                  * during GO Negotiation start.
 723                  */
 724                 freq = p2p->go_neg_peer->listen_freq;
 725                 if (freq <= 0)
 726                         freq = p2p->go_neg_peer->oper_freq;
 727                 type = P2P_SCAN_SPECIFIC;
 728                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 729                         "for freq %u (GO Neg)", freq);
 730         } else if (p2p->invite_peer) {
 731                 /*
 732                  * Only scan the known listen frequency of the peer
 733                  * during Invite start.
 734                  */
 735                 freq = p2p->invite_peer->listen_freq;
 736                 if (freq <= 0)
 737                         freq = p2p->invite_peer->oper_freq;
 738                 type = P2P_SCAN_SPECIFIC;
 739                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 740                         "for freq %u (Invite)", freq);
 741         } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 742                    (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 743                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 744                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 745                         "(+ freq %u)", freq);
 746         } else {
 747                 type = P2P_SCAN_SOCIAL;
 748                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
 749         }
 750
 751         if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 752                                p2p->num_req_dev_types, p2p->req_dev_types) < 0)
 753         {
 754                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 755                         "P2P: Scan request failed");
 756                 p2p_continue_find(p2p);
 757         } else {
 758                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 759                 p2p->p2p_scan_running = 1;
 760                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 761                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 762                                        p2p, NULL);
 763         }
 764 }
 765
 766
 767 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 768 {
 769         struct p2p_data *p2p = eloop_ctx;
 770         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
 771         p2p_stop_find(p2p);
 772 }
 773
 774
 775 static int p2p_run_after_scan(struct p2p_data *p2p)
 776 {
 777         struct p2p_device *dev;
 778         enum p2p_after_scan op;
 779
 780         if (p2p->after_scan_tx) {
 781                 int ret;
 782                 /* TODO: schedule p2p_run_after_scan to be called from TX
 783                  * status callback(?) */
 784                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
 785                         "Action frame at p2p_scan completion");
 786                 ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
 787                                             p2p->after_scan_tx->freq,
 788                                             p2p->after_scan_tx->dst,
 789                                             p2p->after_scan_tx->src,
 790                                             p2p->after_scan_tx->bssid,
 791                                             (u8 *) (p2p->after_scan_tx + 1),
 792                                             p2p->after_scan_tx->len,
 793                                             p2p->after_scan_tx->wait_time);
 794                 os_free(p2p->after_scan_tx);
 795                 p2p->after_scan_tx = NULL;
 796                 return 1;
 797         }
 798
 799         op = p2p->start_after_scan;
 800         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 801         switch (op) {
 802         case P2P_AFTER_SCAN_NOTHING:
 803                 break;
 804         case P2P_AFTER_SCAN_LISTEN:
 805                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 806                         "requested Listen state");
 807                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 808                            p2p->pending_listen_usec / 1000);
 809                 return 1;
 810         case P2P_AFTER_SCAN_CONNECT:
 811                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 812                         "requested connect with " MACSTR,
 813                         MAC2STR(p2p->after_scan_peer));
 814                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 815                 if (dev == NULL) {
 816                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
 817                                 "known anymore");
 818                         break;
 819                 }
 820                 p2p_connect_send(p2p, dev);
 821                 return 1;
 822         }
 823
 824         return 0;
 825 }
 826
 827
 828 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 829 {
 830         struct p2p_data *p2p = eloop_ctx;
 831         int running;
 832         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
 833                 "(running=%d)", p2p->p2p_scan_running);
 834         running = p2p->p2p_scan_running;
 835         /* Make sure we recover from missed scan results callback */
 836         p2p->p2p_scan_running = 0;
 837
 838         if (running)
 839                 p2p_run_after_scan(p2p);
 840 }
 841
 842
 843 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 844 {
 845         p2p->num_req_dev_types = 0;
 846         os_free(p2p->req_dev_types);
 847         p2p->req_dev_types = NULL;
 848 }
 849
 850
 851 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 852              enum p2p_discovery_type type,
 853              unsigned int num_req_dev_types, const u8 *req_dev_types)
 854 {
 855         int res;
 856
 857         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
 858                 type);
 859         if (p2p->p2p_scan_running) {
 860                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
 861                         "already running");
 862         }
 863
 864         p2p_free_req_dev_types(p2p);
 865         if (req_dev_types && num_req_dev_types) {
 866                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 867                                                WPS_DEV_TYPE_LEN);
 868                 if (p2p->req_dev_types == NULL)
 869                         return -1;
 870                 os_memcpy(p2p->req_dev_types, req_dev_types,
 871                           num_req_dev_types * WPS_DEV_TYPE_LEN);
 872                 p2p->num_req_dev_types = num_req_dev_types;
 873         }
 874
 875         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 876         p2p_clear_timeout(p2p);
 877         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 878         p2p->find_type = type;
 879         p2p_device_clear_reported(p2p);
 880         p2p_set_state(p2p, P2P_SEARCH);
 881         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 882         if (timeout)
 883                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
 884                                        p2p, NULL);
 885         switch (type) {
 886         case P2P_FIND_START_WITH_FULL:
 887         case P2P_FIND_PROGRESSIVE:
 888                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
 889                                          p2p->num_req_dev_types,
 890                                          p2p->req_dev_types);
 891                 break;
 892         case P2P_FIND_ONLY_SOCIAL:
 893                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
 894                                          p2p->num_req_dev_types,
 895                                          p2p->req_dev_types);
 896                 break;
 897         default:
 898                 return -1;
 899         }
 900
 901         if (res == 0) {
 902                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 903                 p2p->p2p_scan_running = 1;
 904                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 905                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 906                                        p2p, NULL);
 907         } else {
 908                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
 909                         "p2p_scan");
 910         }
 911
 912         return res;
 913 }
 914
 915
 916 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
 917 {
 918         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
 919         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 920         p2p_clear_timeout(p2p);
 921         p2p_set_state(p2p, P2P_IDLE);
 922         p2p_free_req_dev_types(p2p);
 923         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 924         p2p->go_neg_peer = NULL;
 925         p2p->sd_peer = NULL;
 926         p2p->invite_peer = NULL;
 927         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
 928                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
 929                         "since we are on correct channel for response");
 930                 return;
 931         }
 932         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 933 }
 934
 935
 936 void p2p_stop_find(struct p2p_data *p2p)
 937 {
 938         p2p_stop_find_for_freq(p2p, 0);
 939 }
 940
 941
 942 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
 943 {
 944         if (force_freq) {
 945                 u8 op_reg_class, op_channel;
 946                 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
 947                                         &op_reg_class, &op_channel) < 0) {
 948                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 949                                 "P2P: Unsupported frequency %u MHz",
 950                                 force_freq);
 951                         return -1;
 952                 }
 953                 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
 954                                            op_channel)) {
 955                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 956                                 "P2P: Frequency %u MHz (oper_class %u "
 957                                 "channel %u) not allowed for P2P",
 958                                 force_freq, op_reg_class, op_channel);
 959                         return -1;
 960                 }
 961                 p2p->op_reg_class = op_reg_class;
 962                 p2p->op_channel = op_channel;
 963                 p2p->channels.reg_classes = 1;
 964                 p2p->channels.reg_class[0].channels = 1;
 965                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
 966                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
 967         } else {
 968                 u8 op_reg_class, op_channel;
 969
 970                 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
 971                     p2p_supported_freq(p2p, p2p->best_freq_overall) &&
 972                     p2p_freq_to_channel(p2p->cfg->country,
 973                                         p2p->best_freq_overall,
 974                                         &op_reg_class, &op_channel) == 0) {
 975                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 976                                 "P2P: Select best overall channel as "
 977                                 "operating channel preference");
 978                         p2p->op_reg_class = op_reg_class;
 979                         p2p->op_channel = op_channel;
 980                 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
 981                            p2p_supported_freq(p2p, p2p->best_freq_5) &&
 982                            p2p_freq_to_channel(p2p->cfg->country,
 983                                                p2p->best_freq_5,
 984                                                &op_reg_class, &op_channel) ==
 985                            0) {
 986                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 987                                 "P2P: Select best 5 GHz channel as "
 988                                 "operating channel preference");
 989                         p2p->op_reg_class = op_reg_class;
 990                         p2p->op_channel = op_channel;
 991                 } else if (!p2p->cfg->cfg_op_channel &&
 992                            p2p->best_freq_24 > 0 &&
 993                            p2p_supported_freq(p2p, p2p->best_freq_24) &&
 994                            p2p_freq_to_channel(p2p->cfg->country,
 995                                                p2p->best_freq_24,
 996                                                &op_reg_class, &op_channel) ==
 997                            0) {
 998                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 999                                 "P2P: Select best 2.4 GHz channel as "
1000                                 "operating channel preference");
1001                         p2p->op_reg_class = op_reg_class;
1002                         p2p->op_channel = op_channel;
1003                 } else {
1004                         p2p->op_reg_class = p2p->cfg->op_reg_class;
1005                         p2p->op_channel = p2p->cfg->op_channel;
1006                 }
1007
1008                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1009                           sizeof(struct p2p_channels));
1010         }
1011         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1012                 "P2P: Own preference for operation channel: "
1013                 "Operating Class %u Channel %u%s",
1014                 p2p->op_reg_class, p2p->op_channel,
1015                 force_freq ? " (forced)" : "");
1016
1017         return 0;
1018 }
1019
1020
1021 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1022                 enum p2p_wps_method wps_method,
1023                 int go_intent, const u8 *own_interface_addr,
1024                 unsigned int force_freq, int persistent_group)
1025 {
1026         struct p2p_device *dev;
1027
1028         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1029                 "P2P: Request to start group negotiation - peer=" MACSTR
1030                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1031                 " wps_method=%d persistent_group=%d",
1032                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1033                 wps_method, persistent_group);
1034
1035         if (p2p_prepare_channel(p2p, force_freq) < 0)
1036                 return -1;
1037
1038         dev = p2p_get_device(p2p, peer_addr);
1039         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1040                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1041                         "P2P: Cannot connect to unknown P2P Device " MACSTR,
1042                         MAC2STR(peer_addr));
1043                 return -1;
1044         }
1045
1046         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1047                 if (!(dev->info.dev_capab &
1048                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1049                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1050                                 "P2P: Cannot connect to P2P Device " MACSTR
1051                                 " that is in a group and is not discoverable",
1052                                 MAC2STR(peer_addr));
1053                         return -1;
1054                 }
1055                 if (dev->oper_freq <= 0) {
1056                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1057                                 "P2P: Cannot connect to P2P Device " MACSTR
1058                                 " with incomplete information",
1059                                 MAC2STR(peer_addr));
1060                         return -1;
1061                 }
1062
1063                 /*
1064                  * First, try to connect directly. If the peer does not
1065                  * acknowledge frames, assume it is sleeping and use device
1066                  * discoverability via the GO at that point.
1067                  */
1068         }
1069
1070         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1071         dev->flags &= ~P2P_DEV_USER_REJECTED;
1072         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1073         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1074         dev->connect_reqs = 0;
1075         dev->go_neg_req_sent = 0;
1076         dev->go_state = UNKNOWN_GO;
1077         if (persistent_group)
1078                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1079         else
1080                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1081         p2p->go_intent = go_intent;
1082         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1083
1084         if (p2p->state != P2P_IDLE)
1085                 p2p_stop_find(p2p);
1086
1087         if (p2p->after_scan_tx) {
1088                 /*
1089                  * We need to drop the pending frame to avoid issues with the
1090                  * new GO Negotiation, e.g., when the pending frame was from a
1091                  * previous attempt at starting a GO Negotiation.
1092                  */
1093                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1094                         "previous pending Action frame TX that was waiting "
1095                         "for p2p_scan completion");
1096                 os_free(p2p->after_scan_tx);
1097                 p2p->after_scan_tx = NULL;
1098         }
1099
1100         dev->wps_method = wps_method;
1101         dev->status = P2P_SC_SUCCESS;
1102
1103         if (force_freq)
1104                 dev->flags |= P2P_DEV_FORCE_FREQ;
1105         else
1106                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1107
1108         if (p2p->p2p_scan_running) {
1109                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1110                         "P2P: p2p_scan running - delay connect send");
1111                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1112                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1113                 return 0;
1114         }
1115         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1116
1117         return p2p_connect_send(p2p, dev);
1118 }
1119
1120
1121 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1122                   enum p2p_wps_method wps_method,
1123                   int go_intent, const u8 *own_interface_addr,
1124                   unsigned int force_freq, int persistent_group)
1125 {
1126         struct p2p_device *dev;
1127
1128         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1129                 "P2P: Request to authorize group negotiation - peer=" MACSTR
1130                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1131                 " wps_method=%d  persistent_group=%d",
1132                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1133                 wps_method, persistent_group);
1134
1135         if (p2p_prepare_channel(p2p, force_freq) < 0)
1136                 return -1;
1137
1138         dev = p2p_get_device(p2p, peer_addr);
1139         if (dev == NULL) {
1140                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1141                         "P2P: Cannot authorize unknown P2P Device " MACSTR,
1142                         MAC2STR(peer_addr));
1143                 return -1;
1144         }
1145
1146         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1147         dev->flags &= ~P2P_DEV_USER_REJECTED;
1148         dev->go_neg_req_sent = 0;
1149         dev->go_state = UNKNOWN_GO;
1150         if (persistent_group)
1151                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1152         else
1153                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1154         p2p->go_intent = go_intent;
1155         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1156
1157         dev->wps_method = wps_method;
1158         dev->status = P2P_SC_SUCCESS;
1159
1160         if (force_freq)
1161                 dev->flags |= P2P_DEV_FORCE_FREQ;
1162         else
1163                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1164
1165         return 0;
1166 }
1167
1168
1169 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1170                       struct p2p_device *dev, struct p2p_message *msg)
1171 {
1172         os_get_time(&dev->last_seen);
1173
1174         p2p_copy_wps_info(dev, 0, msg);
1175
1176         if (msg->listen_channel) {
1177                 int freq;
1178                 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1179                                            msg->listen_channel[3],
1180                                            msg->listen_channel[4]);
1181                 if (freq < 0) {
1182                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1183                                 "P2P: Unknown peer Listen channel: "
1184                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1185                                 msg->listen_channel[0],
1186                                 msg->listen_channel[1],
1187                                 msg->listen_channel[2],
1188                                 msg->listen_channel[3],
1189                                 msg->listen_channel[4]);
1190                 } else {
1191                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1192                                 "peer " MACSTR " Listen channel: %u -> %u MHz",
1193                                 MAC2STR(dev->info.p2p_device_addr),
1194                                 dev->listen_freq, freq);
1195                         dev->listen_freq = freq;
1196                 }
1197         }
1198
1199         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1200                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1201                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1202                         "P2P: Completed device entry based on data from "
1203                         "GO Negotiation Request");
1204         } else {
1205                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1206                         "P2P: Created device entry based on GO Neg Req: "
1207                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1208                         "listen_freq=%d",
1209                         MAC2STR(dev->info.p2p_device_addr),
1210                         dev->info.dev_capab, dev->info.group_capab,
1211                         dev->info.device_name, dev->listen_freq);
1212         }
1213
1214         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1215
1216         if (dev->flags & P2P_DEV_USER_REJECTED) {
1217                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1218                         "P2P: Do not report rejected device");
1219                 return;
1220         }
1221
1222         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1223                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1224         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1225 }
1226
1227
1228 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1229 {
1230         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1231         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1232         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1233                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1234         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1235 }
1236
1237
1238 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1239 {
1240         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1241         p2p_random(params->passphrase, 8);
1242         return 0;
1243 }
1244
1245
1246 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1247 {
1248         struct p2p_go_neg_results res;
1249         int go = peer->go_state == LOCAL_GO;
1250         struct p2p_channels intersection;
1251         int freqs;
1252         size_t i, j;
1253
1254         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1255                 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1256                 "GO)", MAC2STR(peer->info.p2p_device_addr),
1257                 go ? "local end" : "peer");
1258
1259         os_memset(&res, 0, sizeof(res));
1260         res.role_go = go;
1261         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1262         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1263         res.wps_method = peer->wps_method;
1264         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1265                 res.persistent_group = 1;
1266
1267         if (go) {
1268                 /* Setup AP mode for WPS provisioning */
1269                 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1270                                                p2p->op_reg_class,
1271                                                p2p->op_channel);
1272                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1273                 res.ssid_len = p2p->ssid_len;
1274                 p2p_random(res.passphrase, 8);
1275         } else {
1276                 res.freq = peer->oper_freq;
1277                 if (p2p->ssid_len) {
1278                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1279                         res.ssid_len = p2p->ssid_len;
1280                 }
1281         }
1282
1283         p2p_channels_intersect(&p2p->channels, &peer->channels,
1284                                &intersection);
1285         freqs = 0;
1286         for (i = 0; i < intersection.reg_classes; i++) {
1287                 struct p2p_reg_class *c = &intersection.reg_class[i];
1288                 if (freqs + 1 == P2P_MAX_CHANNELS)
1289                         break;
1290                 for (j = 0; j < c->channels; j++) {
1291                         int freq;
1292                         if (freqs + 1 == P2P_MAX_CHANNELS)
1293                                 break;
1294                         freq = p2p_channel_to_freq(peer->country, c->reg_class,
1295                                                    c->channel[j]);
1296                         if (freq < 0)
1297                                 continue;
1298                         res.freq_list[freqs++] = freq;
1299                 }
1300         }
1301
1302         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1303
1304         p2p_clear_timeout(p2p);
1305         peer->go_neg_req_sent = 0;
1306         peer->wps_method = WPS_NOT_READY;
1307
1308         p2p_set_state(p2p, P2P_PROVISIONING);
1309         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1310 }
1311
1312
1313 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1314                               const u8 *data, size_t len, int rx_freq)
1315 {
1316         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1317                 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1318         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1319
1320         if (len < 1)
1321                 return;
1322
1323         switch (data[0]) {
1324         case P2P_GO_NEG_REQ:
1325                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1326                 break;
1327         case P2P_GO_NEG_RESP:
1328                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1329                 break;
1330         case P2P_GO_NEG_CONF:
1331                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1332                 break;
1333         case P2P_INVITATION_REQ:
1334                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1335                                            rx_freq);
1336                 break;
1337         case P2P_INVITATION_RESP:
1338                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1339                 break;
1340         case P2P_PROV_DISC_REQ:
1341                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1342                 break;
1343         case P2P_PROV_DISC_RESP:
1344                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1345                 break;
1346         case P2P_DEV_DISC_REQ:
1347                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1348                 break;
1349         case P2P_DEV_DISC_RESP:
1350                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1351                 break;
1352         default:
1353                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1354                         "P2P: Unsupported P2P Public Action frame type %d",
1355                         data[0]);
1356                 break;
1357         }
1358 }
1359
1360
1361 void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1362                           const u8 *bssid, const u8 *data, size_t len,
1363                           int freq)
1364 {
1365         if (len < 1)
1366                 return;
1367
1368         switch (data[0]) {
1369         case WLAN_PA_VENDOR_SPECIFIC:
1370                 data++;
1371                 len--;
1372                 if (len < 3)
1373                         return;
1374                 if (WPA_GET_BE24(data) != OUI_WFA)
1375                         return;
1376
1377                 data += 3;
1378                 len -= 3;
1379                 if (len < 1)
1380                         return;
1381
1382                 if (*data != P2P_OUI_TYPE)
1383                         return;
1384
1385                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1386                 break;
1387         case WLAN_PA_GAS_INITIAL_REQ:
1388                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1389                 break;
1390         case WLAN_PA_GAS_INITIAL_RESP:
1391                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1392                 break;
1393         case WLAN_PA_GAS_COMEBACK_REQ:
1394                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1395                 break;
1396         case WLAN_PA_GAS_COMEBACK_RESP:
1397                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1398                 break;
1399         }
1400 }
1401
1402
1403 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1404                    const u8 *bssid, u8 category,
1405                    const u8 *data, size_t len, int freq)
1406 {
1407         if (category == WLAN_ACTION_PUBLIC) {
1408                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1409                 return;
1410         }
1411
1412         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1413                 return;
1414
1415         if (len < 4)
1416                 return;
1417
1418         if (WPA_GET_BE24(data) != OUI_WFA)
1419                 return;
1420         data += 3;
1421         len -= 3;
1422
1423         if (*data != P2P_OUI_TYPE)
1424                 return;
1425         data++;
1426         len--;
1427
1428         /* P2P action frame */
1429         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1430                 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1431         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1432
1433         if (len < 1)
1434                 return;
1435         switch (data[0]) {
1436         case P2P_NOA:
1437                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1438                         "P2P: Received P2P Action - Notice of Absence");
1439                 /* TODO */
1440                 break;
1441         case P2P_PRESENCE_REQ:
1442                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1443                 break;
1444         case P2P_PRESENCE_RESP:
1445                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1446                 break;
1447         case P2P_GO_DISC_REQ:
1448                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1449                 break;
1450         default:
1451                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1452                         "P2P: Received P2P Action - unknown type %u", data[0]);
1453                 break;
1454         }
1455 }
1456
1457
1458 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1459 {
1460         struct p2p_data *p2p = eloop_ctx;
1461         if (p2p->go_neg_peer == NULL)
1462                 return;
1463         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1464         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1465         p2p_connect_send(p2p, p2p->go_neg_peer);
1466 }
1467
1468
1469 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1470 {
1471         struct p2p_data *p2p = eloop_ctx;
1472         if (p2p->invite_peer == NULL)
1473                 return;
1474         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1475         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1476 }
1477
1478
1479 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1480                                        const u8 *ie, size_t ie_len)
1481 {
1482         struct p2p_message msg;
1483         struct p2p_device *dev;
1484
1485         os_memset(&msg, 0, sizeof(msg));
1486         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1487         {
1488                 p2p_parse_free(&msg);
1489                 return; /* not a P2P probe */
1490         }
1491
1492         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1493             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1494             != 0) {
1495                 /* The Probe Request is not part of P2P Device Discovery. It is
1496                  * not known whether the source address of the frame is the P2P
1497                  * Device Address or P2P Interface Address. Do not add a new
1498                  * peer entry based on this frames.
1499                  */
1500                 p2p_parse_free(&msg);
1501                 return;
1502         }
1503
1504         dev = p2p_get_device(p2p, addr);
1505         if (dev) {
1506                 if (dev->country[0] == 0 && msg.listen_channel)
1507                         os_memcpy(dev->country, msg.listen_channel, 3);
1508                 p2p_parse_free(&msg);
1509                 return; /* already known */
1510         }
1511
1512         dev = p2p_create_device(p2p, addr);
1513         if (dev == NULL) {
1514                 p2p_parse_free(&msg);
1515                 return;
1516         }
1517
1518         os_get_time(&dev->last_seen);
1519         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1520
1521         if (msg.listen_channel) {
1522                 os_memcpy(dev->country, msg.listen_channel, 3);
1523                 dev->listen_freq = p2p_channel_to_freq(dev->country,
1524                                                        msg.listen_channel[3],
1525                                                        msg.listen_channel[4]);
1526         }
1527
1528         p2p_copy_wps_info(dev, 1, &msg);
1529
1530         p2p_parse_free(&msg);
1531
1532         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1533                 "P2P: Created device entry based on Probe Req: " MACSTR
1534                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1535                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1536                 dev->info.group_capab, dev->info.device_name,
1537                 dev->listen_freq);
1538 }
1539
1540
1541 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1542                                                 const u8 *addr,
1543                                                 struct p2p_message *msg)
1544 {
1545         struct p2p_device *dev;
1546
1547         dev = p2p_get_device(p2p, addr);
1548         if (dev) {
1549                 os_get_time(&dev->last_seen);
1550                 return dev; /* already known */
1551         }
1552
1553         dev = p2p_create_device(p2p, addr);
1554         if (dev == NULL)
1555                 return NULL;
1556
1557         p2p_add_dev_info(p2p, addr, dev, msg);
1558
1559         return dev;
1560 }
1561
1562
1563 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1564 {
1565         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1566                 return 1;
1567         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1568             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1569             WPA_GET_BE16(&req_dev_type[6]) == 0)
1570                 return 1; /* Category match with wildcard OUI/sub-category */
1571         return 0;
1572 }
1573
1574
1575 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1576                         size_t num_req_dev_type)
1577 {
1578         size_t i;
1579         for (i = 0; i < num_req_dev_type; i++) {
1580                 if (dev_type_match(dev_type, req_dev_type[i]))
1581                         return 1;
1582         }
1583         return 0;
1584 }
1585
1586
1587 /**
1588  * p2p_match_dev_type - Match local device type with requested type
1589  * @p2p: P2P module context from p2p_init()
1590  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1591  * Returns: 1 on match, 0 on mismatch
1592  *
1593  * This function can be used to match the Requested Device Type attribute in
1594  * WPS IE with the local device types for deciding whether to reply to a Probe
1595  * Request frame.
1596  */
1597 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1598 {
1599         struct wps_parse_attr attr;
1600         size_t i;
1601
1602         if (wps_parse_msg(wps, &attr))
1603                 return 1; /* assume no Requested Device Type attributes */
1604
1605         if (attr.num_req_dev_type == 0)
1606                 return 1; /* no Requested Device Type attributes -> match */
1607
1608         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1609                                 attr.num_req_dev_type))
1610                 return 1; /* Own Primary Device Type matches */
1611
1612         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1613                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1614                                         attr.req_dev_type,
1615                                         attr.num_req_dev_type))
1616                 return 1; /* Own Secondary Device Type matches */
1617
1618         /* No matching device type found */
1619         return 0;
1620 }
1621
1622
1623 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1624 {
1625         struct wpabuf *buf;
1626         u8 *len;
1627
1628         buf = wpabuf_alloc(1000);
1629         if (buf == NULL)
1630                 return NULL;
1631
1632         p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1633
1634         /* P2P IE */
1635         len = p2p_buf_add_ie_hdr(buf);
1636         p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1637         if (p2p->ext_listen_interval)
1638                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1639                                               p2p->ext_listen_interval);
1640         p2p_buf_add_device_info(buf, p2p, NULL);
1641         p2p_buf_update_ie_hdr(buf, len);
1642
1643         return buf;
1644 }
1645
1646
1647 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
1648                             const u8 *dst, const u8 *bssid, const u8 *ie,
1649                             size_t ie_len)
1650 {
1651         struct ieee802_11_elems elems;
1652         struct wpabuf *buf;
1653         struct ieee80211_mgmt *resp;
1654         struct wpabuf *wps;
1655         struct wpabuf *ies;
1656
1657         if (!p2p->in_listen || !p2p->drv_in_listen) {
1658                 /* not in Listen state - ignore Probe Request */
1659                 return;
1660         }
1661
1662         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1663             ParseFailed) {
1664                 /* Ignore invalid Probe Request frames */
1665                 return;
1666         }
1667
1668         if (elems.p2p == NULL) {
1669                 /* not a P2P probe - ignore it */
1670                 return;
1671         }
1672
1673         if (dst && !is_broadcast_ether_addr(dst) &&
1674             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1675                 /* Not sent to the broadcast address or our P2P Device Address
1676                  */
1677                 return;
1678         }
1679
1680         if (bssid && !is_broadcast_ether_addr(bssid)) {
1681                 /* Not sent to the Wildcard BSSID */
1682                 return;
1683         }
1684
1685         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1686             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1687             0) {
1688                 /* not using P2P Wildcard SSID - ignore */
1689                 return;
1690         }
1691
1692         /* Check Requested Device Type match */
1693         wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1694         if (wps && !p2p_match_dev_type(p2p, wps)) {
1695                 wpabuf_free(wps);
1696                 /* No match with Requested Device Type */
1697                 return;
1698         }
1699         wpabuf_free(wps);
1700
1701         if (!p2p->cfg->send_probe_resp)
1702                 return; /* Response generated elsewhere */
1703
1704         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1705                 "P2P: Reply to P2P Probe Request in Listen state");
1706
1707         /*
1708          * We do not really have a specific BSS that this frame is advertising,
1709          * so build a frame that has some information in valid format. This is
1710          * really only used for discovery purposes, not to learn exact BSS
1711          * parameters.
1712          */
1713         ies = p2p_build_probe_resp_ies(p2p);
1714         if (ies == NULL)
1715                 return;
1716
1717         buf = wpabuf_alloc(200 + wpabuf_len(ies));
1718         if (buf == NULL) {
1719                 wpabuf_free(ies);
1720                 return;
1721         }
1722
1723         resp = NULL;
1724         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1725
1726         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1727                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
1728         os_memcpy(resp->da, addr, ETH_ALEN);
1729         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1730         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1731         resp->u.probe_resp.beacon_int = host_to_le16(100);
1732         /* hardware or low-level driver will setup seq_ctrl and timestamp */
1733         resp->u.probe_resp.capab_info =
1734                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1735                              WLAN_CAPABILITY_PRIVACY |
1736                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
1737
1738         wpabuf_put_u8(buf, WLAN_EID_SSID);
1739         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1740         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1741
1742         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1743         wpabuf_put_u8(buf, 8);
1744         wpabuf_put_u8(buf, (60 / 5) | 0x80);
1745         wpabuf_put_u8(buf, 90 / 5);
1746         wpabuf_put_u8(buf, (120 / 5) | 0x80);
1747         wpabuf_put_u8(buf, 180 / 5);
1748         wpabuf_put_u8(buf, (240 / 5) | 0x80);
1749         wpabuf_put_u8(buf, 360 / 5);
1750         wpabuf_put_u8(buf, 480 / 5);
1751         wpabuf_put_u8(buf, 540 / 5);
1752
1753         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1754         wpabuf_put_u8(buf, 1);
1755         wpabuf_put_u8(buf, p2p->cfg->channel);
1756
1757         wpabuf_put_buf(buf, ies);
1758         wpabuf_free(ies);
1759
1760         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1761
1762         wpabuf_free(buf);
1763 }
1764
1765
1766 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1767                      const u8 *bssid, const u8 *ie, size_t ie_len)
1768 {
1769         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1770
1771         p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
1772
1773         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1774             p2p->go_neg_peer &&
1775             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1776             == 0) {
1777                 /* Received a Probe Request from GO Negotiation peer */
1778                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1779                         "P2P: Found GO Negotiation peer - try to start GO "
1780                         "negotiation from timeout");
1781                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1782                 return 1;
1783         }
1784
1785         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1786             p2p->invite_peer &&
1787             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1788             == 0) {
1789                 /* Received a Probe Request from Invite peer */
1790                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1791                         "P2P: Found Invite peer - try to start Invite from "
1792                         "timeout");
1793                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1794                 return 1;
1795         }
1796
1797         return 0;
1798 }
1799
1800
1801 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1802                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
1803 {
1804         struct wpabuf *tmp;
1805         u8 *lpos;
1806         size_t tmplen;
1807         int res;
1808         u8 group_capab;
1809
1810         if (p2p_ie == NULL)
1811                 return 0; /* WLAN AP is not a P2P manager */
1812
1813         /*
1814          * (Re)Association Request - P2P IE
1815          * P2P Capability attribute (shall be present)
1816          * P2P Interface attribute (present if concurrent device and
1817          *      P2P Management is enabled)
1818          */
1819         tmp = wpabuf_alloc(200);
1820         if (tmp == NULL)
1821                 return -1;
1822
1823         lpos = p2p_buf_add_ie_hdr(tmp);
1824         group_capab = 0;
1825         if (p2p->num_groups > 0) {
1826                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1827                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1828                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1829                     p2p->cross_connect)
1830                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1831         }
1832         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1833         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1834             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1835                 p2p_buf_add_p2p_interface(tmp, p2p);
1836         p2p_buf_update_ie_hdr(tmp, lpos);
1837
1838         tmplen = wpabuf_len(tmp);
1839         if (tmplen > len)
1840                 res = -1;
1841         else {
1842                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1843                 res = tmplen;
1844         }
1845         wpabuf_free(tmp);
1846
1847         return res;
1848 }
1849
1850
1851 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1852                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
1853 {
1854         struct wpabuf *tmp;
1855         u8 *lpos;
1856         struct p2p_device *peer;
1857         size_t tmplen;
1858         int res;
1859
1860         if (!p2p_group)
1861                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
1862
1863         /*
1864          * (Re)Association Request - P2P IE
1865          * P2P Capability attribute (shall be present)
1866          * Extended Listen Timing (may be present)
1867          * P2P Device Info attribute (shall be present)
1868          */
1869         tmp = wpabuf_alloc(200);
1870         if (tmp == NULL)
1871                 return -1;
1872
1873         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1874
1875         lpos = p2p_buf_add_ie_hdr(tmp);
1876         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
1877         if (p2p->ext_listen_interval)
1878                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1879                                               p2p->ext_listen_interval);
1880         p2p_buf_add_device_info(tmp, p2p, peer);
1881         p2p_buf_update_ie_hdr(tmp, lpos);
1882
1883         tmplen = wpabuf_len(tmp);
1884         if (tmplen > len)
1885                 res = -1;
1886         else {
1887                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1888                 res = tmplen;
1889         }
1890         wpabuf_free(tmp);
1891
1892         return res;
1893 }
1894
1895
1896 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1897 {
1898         struct wpabuf *p2p_ie;
1899         int ret;
1900
1901         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1902         if (p2p_ie == NULL)
1903                 return 0;
1904
1905         ret = p2p_attr_text(p2p_ie, buf, end);
1906         wpabuf_free(p2p_ie);
1907         return ret;
1908 }
1909
1910
1911 static void p2p_clear_go_neg(struct p2p_data *p2p)
1912 {
1913         p2p->go_neg_peer = NULL;
1914         p2p_clear_timeout(p2p);
1915         p2p_set_state(p2p, P2P_IDLE);
1916 }
1917
1918
1919 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1920 {
1921         if (p2p->go_neg_peer == NULL) {
1922                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1923                         "P2P: No pending Group Formation - "
1924                         "ignore WPS registration success notification");
1925                 return; /* No pending Group Formation */
1926         }
1927
1928         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1929             0) {
1930                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1931                         "P2P: Ignore WPS registration success notification "
1932                         "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1933                         MAC2STR(mac_addr),
1934                         MAC2STR(p2p->go_neg_peer->intended_addr));
1935                 return; /* Ignore unexpected peer address */
1936         }
1937
1938         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1939                 "P2P: Group Formation completed successfully with " MACSTR,
1940                 MAC2STR(mac_addr));
1941
1942         p2p_clear_go_neg(p2p);
1943 }
1944
1945
1946 void p2p_group_formation_failed(struct p2p_data *p2p)
1947 {
1948         if (p2p->go_neg_peer == NULL) {
1949                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1950                         "P2P: No pending Group Formation - "
1951                         "ignore group formation failure notification");
1952                 return; /* No pending Group Formation */
1953         }
1954
1955         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1956                 "P2P: Group Formation failed with " MACSTR,
1957                 MAC2STR(p2p->go_neg_peer->intended_addr));
1958
1959         p2p_clear_go_neg(p2p);
1960 }
1961
1962
1963 struct p2p_data * p2p_init(const struct p2p_config *cfg)
1964 {
1965         struct p2p_data *p2p;
1966
1967         if (cfg->max_peers < 1)
1968                 return NULL;
1969
1970         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
1971         if (p2p == NULL)
1972                 return NULL;
1973         p2p->cfg = (struct p2p_config *) (p2p + 1);
1974         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
1975         if (cfg->dev_name)
1976                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
1977         if (cfg->manufacturer)
1978                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
1979         if (cfg->model_name)
1980                 p2p->cfg->model_name = os_strdup(cfg->model_name);
1981         if (cfg->model_number)
1982                 p2p->cfg->model_number = os_strdup(cfg->model_number);
1983         if (cfg->serial_number)
1984                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
1985
1986         p2p->min_disc_int = 1;
1987         p2p->max_disc_int = 3;
1988
1989         os_get_random(&p2p->next_tie_breaker, 1);
1990         p2p->next_tie_breaker &= 0x01;
1991         if (cfg->sd_request)
1992                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
1993         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
1994         if (cfg->concurrent_operations)
1995                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
1996         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
1997
1998         dl_list_init(&p2p->devices);
1999
2000         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2001                                p2p_expiration_timeout, p2p, NULL);
2002
2003         return p2p;
2004 }
2005
2006
2007 void p2p_deinit(struct p2p_data *p2p)
2008 {
2009         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2010         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2011         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2012         p2p_flush(p2p);
2013         p2p_free_req_dev_types(p2p);
2014         os_free(p2p->cfg->dev_name);
2015         os_free(p2p->cfg->manufacturer);
2016         os_free(p2p->cfg->model_name);
2017         os_free(p2p->cfg->model_number);
2018         os_free(p2p->cfg->serial_number);
2019         os_free(p2p->groups);
2020         wpabuf_free(p2p->sd_resp);
2021         os_free(p2p->after_scan_tx);
2022         p2p_remove_wps_vendor_extensions(p2p);
2023         os_free(p2p);
2024 }
2025
2026
2027 void p2p_flush(struct p2p_data *p2p)
2028 {
2029         struct p2p_device *dev, *prev;
2030         p2p_clear_timeout(p2p);
2031         p2p_set_state(p2p, P2P_IDLE);
2032         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2033         p2p->go_neg_peer = NULL;
2034         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2035         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2036                               list) {
2037                 dl_list_del(&dev->list);
2038                 p2p_device_free(p2p, dev);
2039         }
2040         p2p_free_sd_queries(p2p);
2041         os_free(p2p->after_scan_tx);
2042         p2p->after_scan_tx = NULL;
2043 }
2044
2045
2046 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2047 {
2048         struct p2p_device *dev;
2049
2050         dev = p2p_get_device(p2p, addr);
2051         if (dev == NULL)
2052                 return -1;
2053
2054         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2055                 MAC2STR(addr));
2056
2057         if (p2p->go_neg_peer == dev)
2058                 p2p->go_neg_peer = NULL;
2059
2060         dev->wps_method = WPS_NOT_READY;
2061         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2062         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2063
2064         /* Check if after_scan_tx is for this peer. If so free it */
2065         if (p2p->after_scan_tx &&
2066             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2067                 os_free(p2p->after_scan_tx);
2068                 p2p->after_scan_tx = NULL;
2069         }
2070
2071         return 0;
2072 }
2073
2074
2075 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2076 {
2077         os_free(p2p->cfg->dev_name);
2078         if (dev_name) {
2079                 p2p->cfg->dev_name = os_strdup(dev_name);
2080                 if (p2p->cfg->dev_name == NULL)
2081                         return -1;
2082         } else
2083                 p2p->cfg->dev_name = NULL;
2084         return 0;
2085 }
2086
2087
2088 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2089 {
2090         os_free(p2p->cfg->manufacturer);
2091         p2p->cfg->manufacturer = NULL;
2092         if (manufacturer) {
2093                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2094                 if (p2p->cfg->manufacturer == NULL)
2095                         return -1;
2096         }
2097
2098         return 0;
2099 }
2100
2101
2102 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2103 {
2104         os_free(p2p->cfg->model_name);
2105         p2p->cfg->model_name = NULL;
2106         if (model_name) {
2107                 p2p->cfg->model_name = os_strdup(model_name);
2108                 if (p2p->cfg->model_name == NULL)
2109                         return -1;
2110         }
2111
2112         return 0;
2113 }
2114
2115
2116 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2117 {
2118         os_free(p2p->cfg->model_number);
2119         p2p->cfg->model_number = NULL;
2120         if (model_number) {
2121                 p2p->cfg->model_number = os_strdup(model_number);
2122                 if (p2p->cfg->model_number == NULL)
2123                         return -1;
2124         }
2125
2126         return 0;
2127 }
2128
2129
2130 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2131 {
2132         os_free(p2p->cfg->serial_number);
2133         p2p->cfg->serial_number = NULL;
2134         if (serial_number) {
2135                 p2p->cfg->serial_number = os_strdup(serial_number);
2136                 if (p2p->cfg->serial_number == NULL)
2137                         return -1;
2138         }
2139
2140         return 0;
2141 }
2142
2143
2144 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2145 {
2146         p2p->cfg->config_methods = config_methods;
2147 }
2148
2149
2150 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2151 {
2152         os_memcpy(p2p->cfg->uuid, uuid, 16);
2153 }
2154
2155
2156 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2157 {
2158         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2159         return 0;
2160 }
2161
2162
2163 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2164                           size_t num_dev_types)
2165 {
2166         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2167                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2168         p2p->cfg->num_sec_dev_types = num_dev_types;
2169         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2170         return 0;
2171 }
2172
2173
2174 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2175 {
2176         int i;
2177
2178         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2179                 wpabuf_free(p2p->wps_vendor_ext[i]);
2180                 p2p->wps_vendor_ext[i] = NULL;
2181         }
2182 }
2183
2184
2185 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2186                                  const struct wpabuf *vendor_ext)
2187 {
2188         int i;
2189
2190         if (vendor_ext == NULL)
2191                 return -1;
2192
2193         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2194                 if (p2p->wps_vendor_ext[i] == NULL)
2195                         break;
2196         }
2197         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2198                 return -1;
2199
2200         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2201         if (p2p->wps_vendor_ext[i] == NULL)
2202                 return -1;
2203
2204         return 0;
2205 }
2206
2207
2208 int p2p_set_country(struct p2p_data *p2p, const char *country)
2209 {
2210         os_memcpy(p2p->cfg->country, country, 3);
2211         return 0;
2212 }
2213
2214
2215 void p2p_continue_find(struct p2p_data *p2p)
2216 {
2217         struct p2p_device *dev;
2218         p2p_set_state(p2p, P2P_SEARCH);
2219         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2220                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2221                         if (p2p_start_sd(p2p, dev) == 0)
2222                                 return;
2223                         else
2224                                 break;
2225                 } else if (dev->req_config_methods &&
2226                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2227                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2228                                 "pending Provisioning Discovery Request to "
2229                                 MACSTR " (config methods 0x%x)",
2230                                 MAC2STR(dev->info.p2p_device_addr),
2231                                 dev->req_config_methods);
2232                         if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2233                                 return;
2234                 }
2235         }
2236
2237         p2p_listen_in_find(p2p);
2238 }
2239
2240
2241 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2242 {
2243         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2244                 "P2P: Service Discovery Query TX callback: success=%d",
2245                 success);
2246         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2247
2248         if (!success) {
2249                 if (p2p->sd_peer) {
2250                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2251                         p2p->sd_peer = NULL;
2252                 }
2253                 p2p_continue_find(p2p);
2254                 return;
2255         }
2256
2257         if (p2p->sd_peer == NULL) {
2258                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2259                         "P2P: No SD peer entry known");
2260                 p2p_continue_find(p2p);
2261                 return;
2262         }
2263
2264         /* Wait for response from the peer */
2265         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2266         p2p_set_timeout(p2p, 0, 200000);
2267 }
2268
2269
2270 /**
2271  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2272  * @p2p: P2P module context from p2p_init()
2273  */
2274 void p2p_retry_pd(struct p2p_data *p2p)
2275 {
2276         struct p2p_device *dev;
2277
2278         if (p2p->state != P2P_IDLE)
2279                 return;
2280
2281         /*
2282          * Retry the prov disc req attempt only for the peer that the user had
2283          * requested for and provided a join has not been initiated on it
2284          * in the meantime.
2285          */
2286
2287         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2288                 if (os_memcmp(p2p->pending_pd_devaddr,
2289                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2290                         continue;
2291                 if (!dev->req_config_methods)
2292                         continue;
2293                 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2294                         continue;
2295
2296                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2297                         "pending Provisioning Discovery Request to "
2298                         MACSTR " (config methods 0x%x)",
2299                         MAC2STR(dev->info.p2p_device_addr),
2300                         dev->req_config_methods);
2301                 p2p_send_prov_disc_req(p2p, dev, 0);
2302                 return;
2303         }
2304 }
2305
2306
2307 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2308 {
2309         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2310                 "P2P: Provision Discovery Request TX callback: success=%d",
2311                 success);
2312
2313         /*
2314          * Postpone resetting the pending action state till after we actually
2315          * time out. This allows us to take some action like notifying any
2316          * interested parties about no response to the request.
2317          *
2318          * When the timer (below) goes off we check in IDLE, SEARCH, or
2319          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2320          * requests in, if this was still pending and then raise notification.
2321          */
2322
2323         if (!success) {
2324                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2325
2326                 if (p2p->state != P2P_IDLE)
2327                         p2p_continue_find(p2p);
2328                 else if (p2p->user_initiated_pd) {
2329                         p2p->pending_action_state = P2P_PENDING_PD;
2330                         p2p_set_timeout(p2p, 0, 300000);
2331                 }
2332                 return;
2333         }
2334
2335         /*
2336          * This postponing, of resetting pending_action_state, needs to be
2337          * done only for user initiated PD requests and not internal ones.
2338          */
2339         if (p2p->user_initiated_pd)
2340                 p2p->pending_action_state = P2P_PENDING_PD;
2341         else
2342                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2343
2344         /* Wait for response from the peer */
2345         if (p2p->state == P2P_SEARCH)
2346                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2347         p2p_set_timeout(p2p, 0, 200000);
2348 }
2349
2350
2351 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2352                          int level, const u8 *ies, size_t ies_len)
2353 {
2354         p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2355
2356         if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2357             os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2358             == 0) {
2359                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2360                         "P2P: Found GO Negotiation peer - try to start GO "
2361                         "negotiation");
2362                 p2p_connect_send(p2p, p2p->go_neg_peer);
2363                 return 1;
2364         }
2365
2366         return 0;
2367 }
2368
2369
2370 void p2p_scan_res_handled(struct p2p_data *p2p)
2371 {
2372         if (!p2p->p2p_scan_running) {
2373                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2374                         "running, but scan results received");
2375         }
2376         p2p->p2p_scan_running = 0;
2377         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2378
2379         if (p2p_run_after_scan(p2p))
2380                 return;
2381         if (p2p->state == P2P_SEARCH)
2382                 p2p_continue_find(p2p);
2383 }
2384
2385
2386 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2387 {
2388         u8 *len = p2p_buf_add_ie_hdr(ies);
2389         p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2390         if (p2p->cfg->reg_class && p2p->cfg->channel)
2391                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2392                                            p2p->cfg->reg_class,
2393                                            p2p->cfg->channel);
2394         if (p2p->ext_listen_interval)
2395                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2396                                               p2p->ext_listen_interval);
2397         /* TODO: p2p_buf_add_operating_channel() if GO */
2398         p2p_buf_update_ie_hdr(ies, len);
2399 }
2400
2401
2402 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2403 {
2404         return p2p_attr_text(p2p_ie, buf, end);
2405 }
2406
2407
2408 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2409 {
2410         struct p2p_device *dev = p2p->go_neg_peer;
2411
2412         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2413                 "P2P: GO Negotiation Request TX callback: success=%d",
2414                 success);
2415
2416         if (dev == NULL) {
2417                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2418                         "P2P: No pending GO Negotiation");
2419                 return;
2420         }
2421
2422         if (success) {
2423                 dev->go_neg_req_sent++;
2424                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2425                         p2p_set_state(p2p, P2P_IDLE);
2426                         return;
2427                 }
2428         }
2429
2430         if (!success &&
2431             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2432             !is_zero_ether_addr(dev->member_in_go_dev)) {
2433                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2434                         "P2P: Peer " MACSTR " did not acknowledge request - "
2435                         "try to use device discoverability through its GO",
2436                         MAC2STR(dev->info.p2p_device_addr));
2437                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2438                 p2p_send_dev_disc_req(p2p, dev);
2439                 return;
2440         }
2441
2442         /*
2443          * Use P2P find, if needed, to find the other device from its listen
2444          * channel.
2445          */
2446         p2p_set_state(p2p, P2P_CONNECT);
2447         p2p_set_timeout(p2p, 0, 100000);
2448 }
2449
2450
2451 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2452 {
2453         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2454                 "P2P: GO Negotiation Response TX callback: success=%d",
2455                 success);
2456         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2457                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2458                         "P2P: Ignore TX callback event - GO Negotiation is "
2459                         "not running anymore");
2460                 return;
2461         }
2462         p2p_set_state(p2p, P2P_CONNECT);
2463         p2p_set_timeout(p2p, 0, 100000);
2464 }
2465
2466
2467 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2468 {
2469         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2470                 "P2P: GO Negotiation Response (failure) TX callback: "
2471                 "success=%d", success);
2472         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2473                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2474                                   p2p->go_neg_peer->status);
2475         }
2476 }
2477
2478
2479 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2480                                enum p2p_send_action_result result)
2481 {
2482         struct p2p_device *dev;
2483
2484         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2485                 "P2P: GO Negotiation Confirm TX callback: result=%d",
2486                 result);
2487         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2488         if (result == P2P_SEND_ACTION_FAILED) {
2489                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2490                 return;
2491         }
2492         if (result == P2P_SEND_ACTION_NO_ACK) {
2493                 /*
2494                  * It looks like the TX status for GO Negotiation Confirm is
2495                  * often showing failure even when the peer has actually
2496                  * received the frame. Since the peer may change channels
2497                  * immediately after having received the frame, we may not see
2498                  * an Ack for retries, so just dropping a single frame may
2499                  * trigger this. To allow the group formation to succeed if the
2500                  * peer did indeed receive the frame, continue regardless of
2501                  * the TX status.
2502                  */
2503                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2504                         "P2P: Assume GO Negotiation Confirm TX was actually "
2505                         "received by the peer even though Ack was not "
2506                         "reported");
2507         }
2508
2509         dev = p2p->go_neg_peer;
2510         if (dev == NULL)
2511                 return;
2512
2513         p2p_go_complete(p2p, dev);
2514 }
2515
2516
2517 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2518                         const u8 *src, const u8 *bssid,
2519                         enum p2p_send_action_result result)
2520 {
2521         enum p2p_pending_action_state state;
2522         int success;
2523
2524         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2525                 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2526                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2527                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2528                 MAC2STR(bssid), result);
2529         success = result == P2P_SEND_ACTION_SUCCESS;
2530         state = p2p->pending_action_state;
2531         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2532         switch (state) {
2533         case P2P_NO_PENDING_ACTION:
2534                 break;
2535         case P2P_PENDING_GO_NEG_REQUEST:
2536                 p2p_go_neg_req_cb(p2p, success);
2537                 break;
2538         case P2P_PENDING_GO_NEG_RESPONSE:
2539                 p2p_go_neg_resp_cb(p2p, success);
2540                 break;
2541         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2542                 p2p_go_neg_resp_failure_cb(p2p, success);
2543                 break;
2544         case P2P_PENDING_GO_NEG_CONFIRM:
2545                 p2p_go_neg_conf_cb(p2p, result);
2546                 break;
2547         case P2P_PENDING_SD:
2548                 p2p_sd_cb(p2p, success);
2549                 break;
2550         case P2P_PENDING_PD:
2551                 p2p_prov_disc_cb(p2p, success);
2552                 break;
2553         case P2P_PENDING_INVITATION_REQUEST:
2554                 p2p_invitation_req_cb(p2p, success);
2555                 break;
2556         case P2P_PENDING_INVITATION_RESPONSE:
2557                 p2p_invitation_resp_cb(p2p, success);
2558                 break;
2559         case P2P_PENDING_DEV_DISC_REQUEST:
2560                 p2p_dev_disc_req_cb(p2p, success);
2561                 break;
2562         case P2P_PENDING_DEV_DISC_RESPONSE:
2563                 p2p_dev_disc_resp_cb(p2p, success);
2564                 break;
2565         case P2P_PENDING_GO_DISC_REQ:
2566                 p2p_go_disc_req_cb(p2p, success);
2567                 break;
2568         }
2569 }
2570
2571
2572 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2573                    unsigned int duration)
2574 {
2575         if (freq == p2p->pending_client_disc_freq) {
2576                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2577                         "P2P: Client discoverability remain-awake completed");
2578                 p2p->pending_client_disc_freq = 0;
2579                 return;
2580         }
2581
2582         if (freq != p2p->pending_listen_freq) {
2583                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2584                         "P2P: Unexpected listen callback for freq=%u "
2585                         "duration=%u (pending_listen_freq=%u)",
2586                         freq, duration, p2p->pending_listen_freq);
2587                 return;
2588         }
2589
2590         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2591                 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2592                 "callback",
2593                 p2p->pending_listen_sec, p2p->pending_listen_usec,
2594                 p2p->pending_listen_freq);
2595         p2p->in_listen = 1;
2596         p2p->drv_in_listen = freq;
2597         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2598                 /*
2599                  * Add 20 msec extra wait to avoid race condition with driver
2600                  * remain-on-channel end event, i.e., give driver more time to
2601                  * complete the operation before our timeout expires.
2602                  */
2603                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2604                                 p2p->pending_listen_usec + 20000);
2605         }
2606
2607         p2p->pending_listen_freq = 0;
2608 }
2609
2610
2611 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2612 {
2613         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2614                 "state (freq=%u)", freq);
2615         p2p->drv_in_listen = 0;
2616         if (p2p->in_listen)
2617                 return 0; /* Internal timeout will trigger the next step */
2618
2619         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2620                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2621                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2622                                 "P2P: Timeout on sending GO Negotiation "
2623                                 "Request without getting response");
2624                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2625                         return 0;
2626                 }
2627
2628                 p2p_set_state(p2p, P2P_CONNECT);
2629                 p2p_connect_send(p2p, p2p->go_neg_peer);
2630                 return 1;
2631         } else if (p2p->state == P2P_SEARCH) {
2632                 p2p_search(p2p);
2633                 return 1;
2634         }
2635
2636         return 0;
2637 }
2638
2639
2640 static void p2p_timeout_connect(struct p2p_data *p2p)
2641 {
2642         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2643         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2644         p2p_listen_in_find(p2p);
2645 }
2646
2647
2648 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2649 {
2650         if (p2p->go_neg_peer) {
2651                 if (p2p->drv_in_listen) {
2652                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2653                                 "still in Listen state; wait for it to "
2654                                 "complete");
2655                         return;
2656                 }
2657
2658                 if (p2p->go_neg_peer->connect_reqs >= 120) {
2659                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2660                                 "P2P: Timeout on sending GO Negotiation "
2661                                 "Request without getting response");
2662                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2663                         return;
2664                 }
2665
2666                 p2p_set_state(p2p, P2P_CONNECT);
2667                 p2p_connect_send(p2p, p2p->go_neg_peer);
2668         } else
2669                 p2p_set_state(p2p, P2P_IDLE);
2670 }
2671
2672
2673 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2674 {
2675         /*
2676          * TODO: could remain constantly in Listen state for some time if there
2677          * are no other concurrent uses for the radio. For now, go to listen
2678          * state once per second to give other uses a chance to use the radio.
2679          */
2680         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2681         p2p_set_timeout(p2p, 1, 0);
2682 }
2683
2684
2685 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2686 {
2687         struct p2p_device *dev = p2p->go_neg_peer;
2688
2689         if (dev == NULL) {
2690                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2691                         "P2P: Unknown GO Neg peer - stop GO Neg wait");
2692                 return;
2693         }
2694
2695         dev->wait_count++;
2696         if (dev->wait_count >= 120) {
2697                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2698                         "P2P: Timeout on waiting peer to become ready for GO "
2699                         "Negotiation");
2700                 p2p_go_neg_failed(p2p, dev, -1);
2701                 return;
2702         }
2703
2704         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2705                 "P2P: Go to Listen state while waiting for the peer to become "
2706                 "ready for GO Negotiation");
2707         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2708         p2p_listen_in_find(p2p);
2709 }
2710
2711
2712 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2713 {
2714         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2715                 "P2P: Service Discovery Query timeout");
2716         if (p2p->sd_peer) {
2717                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2718                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2719                 p2p->sd_peer = NULL;
2720         }
2721         p2p_continue_find(p2p);
2722 }
2723
2724
2725 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2726 {
2727         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2728                 "P2P: Provision Discovery Request timeout");
2729         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2730         p2p_continue_find(p2p);
2731 }
2732
2733
2734 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2735 {
2736         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2737
2738         /*
2739          * For user initiated PD requests that we have not gotten any responses
2740          * for while in IDLE state, we retry them a couple of times before
2741          * giving up.
2742          */
2743         if (!p2p->user_initiated_pd)
2744                 return;
2745
2746         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2747                 "P2P: User initiated Provision Discovery Request timeout");
2748
2749         if (p2p->pd_retries) {
2750                 p2p->pd_retries--;
2751                 p2p_retry_pd(p2p);
2752         } else {
2753                 if (p2p->cfg->prov_disc_fail)
2754                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2755                                                  p2p->pending_pd_devaddr,
2756                                                  P2P_PROV_DISC_TIMEOUT);
2757                 p2p_reset_pending_pd(p2p);
2758         }
2759 }
2760
2761
2762 static void p2p_timeout_invite(struct p2p_data *p2p)
2763 {
2764         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2765         p2p_set_state(p2p, P2P_INVITE_LISTEN);
2766         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2767                 /*
2768                  * Better remain on operating channel instead of listen channel
2769                  * when running a group.
2770                  */
2771                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2772                         "active GO role - wait on operating channel");
2773                 p2p_set_timeout(p2p, 0, 100000);
2774                 return;
2775         }
2776         p2p_listen_in_find(p2p);
2777 }
2778
2779
2780 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2781 {
2782         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2783                 p2p_set_state(p2p, P2P_INVITE);
2784                 p2p_invite_send(p2p, p2p->invite_peer,
2785                                 p2p->invite_go_dev_addr);
2786         } else {
2787                 if (p2p->invite_peer) {
2788                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2789                                 "P2P: Invitation Request retry limit reached");
2790                         if (p2p->cfg->invitation_result)
2791                                 p2p->cfg->invitation_result(
2792                                         p2p->cfg->cb_ctx, -1, NULL);
2793                 }
2794                 p2p_set_state(p2p, P2P_IDLE);
2795         }
2796 }
2797
2798
2799 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2800 {
2801         struct p2p_data *p2p = eloop_ctx;
2802
2803         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2804                 p2p_state_txt(p2p->state));
2805
2806         p2p->in_listen = 0;
2807
2808         switch (p2p->state) {
2809         case P2P_IDLE:
2810                 /* Check if we timed out waiting for PD req */
2811                 if (p2p->pending_action_state == P2P_PENDING_PD)
2812                         p2p_timeout_prov_disc_req(p2p);
2813                 break;
2814         case P2P_SEARCH:
2815                 /* Check if we timed out waiting for PD req */
2816                 if (p2p->pending_action_state == P2P_PENDING_PD)
2817                         p2p_timeout_prov_disc_req(p2p);
2818                 p2p_search(p2p);
2819                 break;
2820         case P2P_CONNECT:
2821                 p2p_timeout_connect(p2p);
2822                 break;
2823         case P2P_CONNECT_LISTEN:
2824                 p2p_timeout_connect_listen(p2p);
2825                 break;
2826         case P2P_GO_NEG:
2827                 break;
2828         case P2P_LISTEN_ONLY:
2829                 /* Check if we timed out waiting for PD req */
2830                 if (p2p->pending_action_state == P2P_PENDING_PD)
2831                         p2p_timeout_prov_disc_req(p2p);
2832
2833                 if (p2p->ext_listen_only) {
2834                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2835                                 "P2P: Extended Listen Timing - Listen State "
2836                                 "completed");
2837                         p2p->ext_listen_only = 0;
2838                         p2p_set_state(p2p, P2P_IDLE);
2839                 }
2840                 break;
2841         case P2P_WAIT_PEER_CONNECT:
2842                 p2p_timeout_wait_peer_connect(p2p);
2843                 break;
2844         case P2P_WAIT_PEER_IDLE:
2845                 p2p_timeout_wait_peer_idle(p2p);
2846                 break;
2847         case P2P_SD_DURING_FIND:
2848                 p2p_timeout_sd_during_find(p2p);
2849                 break;
2850         case P2P_PROVISIONING:
2851                 break;
2852         case P2P_PD_DURING_FIND:
2853                 p2p_timeout_prov_disc_during_find(p2p);
2854                 break;
2855         case P2P_INVITE:
2856                 p2p_timeout_invite(p2p);
2857                 break;
2858         case P2P_INVITE_LISTEN:
2859                 p2p_timeout_invite_listen(p2p);
2860                 break;
2861         }
2862 }
2863
2864
2865 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2866 {
2867         struct p2p_device *dev;
2868
2869         dev = p2p_get_device(p2p, peer_addr);
2870         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2871                 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2872         if (dev == NULL) {
2873                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2874                         " unknown", MAC2STR(peer_addr));
2875                 return -1;
2876         }
2877         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2878         dev->flags |= P2P_DEV_USER_REJECTED;
2879         return 0;
2880 }
2881
2882
2883 static const char * p2p_wps_method_text(enum p2p_wps_method method)
2884 {
2885         switch (method) {
2886         case WPS_NOT_READY:
2887                 return "not-ready";
2888         case WPS_PIN_LABEL:
2889                 return "Label";
2890         case WPS_PIN_DISPLAY:
2891                 return "Display";
2892         case WPS_PIN_KEYPAD:
2893                 return "Keypad";
2894         case WPS_PBC:
2895                 return "PBC";
2896         }
2897
2898         return "??";
2899 }
2900
2901
2902 static const char * p2p_go_state_text(enum p2p_go_state go_state)
2903 {
2904         switch (go_state) {
2905         case UNKNOWN_GO:
2906                 return "unknown";
2907         case LOCAL_GO:
2908                 return "local";
2909         case  REMOTE_GO:
2910                 return "remote";
2911         }
2912
2913         return "??";
2914 }
2915
2916
2917 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2918                       char *buf, size_t buflen)
2919 {
2920         struct p2p_device *dev;
2921         int res;
2922         char *pos, *end;
2923         struct os_time now;
2924         char devtype[WPS_DEV_TYPE_BUFSIZE];
2925
2926         if (addr)
2927                 dev = p2p_get_device(p2p, addr);
2928         else
2929                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2930
2931         if (dev && next) {
2932                 dev = dl_list_first(&dev->list, struct p2p_device, list);
2933                 if (&dev->list == &p2p->devices)
2934                         dev = NULL;
2935         }
2936
2937         if (dev == NULL)
2938                 return -1;
2939
2940         pos = buf;
2941         end = buf + buflen;
2942
2943         res = os_snprintf(pos, end - pos, MACSTR "\n",
2944                           MAC2STR(dev->info.p2p_device_addr));
2945         if (res < 0 || res >= end - pos)
2946                 return pos - buf;
2947         pos += res;
2948
2949         os_get_time(&now);
2950         res = os_snprintf(pos, end - pos,
2951                           "age=%d\n"
2952                           "listen_freq=%d\n"
2953                           "level=%d\n"
2954                           "wps_method=%s\n"
2955                           "interface_addr=" MACSTR "\n"
2956                           "member_in_go_dev=" MACSTR "\n"
2957                           "member_in_go_iface=" MACSTR "\n"
2958                           "pri_dev_type=%s\n"
2959                           "device_name=%s\n"
2960                           "manufacturer=%s\n"
2961                           "model_name=%s\n"
2962                           "model_number=%s\n"
2963                           "serial_number=%s\n"
2964                           "config_methods=0x%x\n"
2965                           "dev_capab=0x%x\n"
2966                           "group_capab=0x%x\n"
2967                           "go_neg_req_sent=%d\n"
2968                           "go_state=%s\n"
2969                           "dialog_token=%u\n"
2970                           "intended_addr=" MACSTR "\n"
2971                           "country=%c%c\n"
2972                           "oper_freq=%d\n"
2973                           "req_config_methods=0x%x\n"
2974                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
2975                           "status=%d\n"
2976                           "wait_count=%u\n"
2977                           "invitation_reqs=%u\n",
2978                           (int) (now.sec - dev->last_seen.sec),
2979                           dev->listen_freq,
2980                           dev->info.level,
2981                           p2p_wps_method_text(dev->wps_method),
2982                           MAC2STR(dev->interface_addr),
2983                           MAC2STR(dev->member_in_go_dev),
2984                           MAC2STR(dev->member_in_go_iface),
2985                           wps_dev_type_bin2str(dev->info.pri_dev_type,
2986                                                devtype, sizeof(devtype)),
2987                           dev->info.device_name,
2988                           dev->info.manufacturer,
2989                           dev->info.model_name,
2990                           dev->info.model_number,
2991                           dev->info.serial_number,
2992                           dev->info.config_methods,
2993                           dev->info.dev_capab,
2994                           dev->info.group_capab,
2995                           dev->go_neg_req_sent,
2996                           p2p_go_state_text(dev->go_state),
2997                           dev->dialog_token,
2998                           MAC2STR(dev->intended_addr),
2999                           dev->country[0] ? dev->country[0] : '_',
3000                           dev->country[1] ? dev->country[1] : '_',
3001                           dev->oper_freq,
3002                           dev->req_config_methods,
3003                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3004                           "[PROBE_REQ_ONLY]" : "",
3005                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3006                           dev->flags & P2P_DEV_NOT_YET_READY ?
3007                           "[NOT_YET_READY]" : "",
3008                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3009                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3010                           "",
3011                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3012                           "[PD_PEER_DISPLAY]" : "",
3013                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3014                           "[PD_PEER_KEYPAD]" : "",
3015                           dev->flags & P2P_DEV_USER_REJECTED ?
3016                           "[USER_REJECTED]" : "",
3017                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3018                           "[PEER_WAITING_RESPONSE]" : "",
3019                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3020                           "[PREFER_PERSISTENT_GROUP]" : "",
3021                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3022                           "[WAIT_GO_NEG_RESPONSE]" : "",
3023                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3024                           "[WAIT_GO_NEG_CONFIRM]" : "",
3025                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3026                           "[GROUP_CLIENT_ONLY]" : "",
3027                           dev->flags & P2P_DEV_FORCE_FREQ ?
3028                           "[FORCE_FREQ]" : "",
3029                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3030                           "[PD_FOR_JOIN]" : "",
3031                           dev->status,
3032                           dev->wait_count,
3033                           dev->invitation_reqs);
3034         if (res < 0 || res >= end - pos)
3035                 return pos - buf;
3036         pos += res;
3037
3038         if (dev->ext_listen_period) {
3039                 res = os_snprintf(pos, end - pos,
3040                                   "ext_listen_period=%u\n"
3041                                   "ext_listen_interval=%u\n",
3042                                   dev->ext_listen_period,
3043                                   dev->ext_listen_interval);
3044                 if (res < 0 || res >= end - pos)
3045                         return pos - buf;
3046                 pos += res;
3047         }
3048
3049         if (dev->oper_ssid_len) {
3050                 res = os_snprintf(pos, end - pos,
3051                                   "oper_ssid=%s\n",
3052                                   wpa_ssid_txt(dev->oper_ssid,
3053                                                dev->oper_ssid_len));
3054                 if (res < 0 || res >= end - pos)
3055                         return pos - buf;
3056                 pos += res;
3057         }
3058
3059         return pos - buf;
3060 }
3061
3062
3063 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3064 {
3065         if (enabled) {
3066                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3067                         "discoverability enabled");
3068                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3069         } else {
3070                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3071                         "discoverability disabled");
3072                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3073         }
3074 }
3075
3076
3077 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3078                                               u32 duration2, u32 interval2)
3079 {
3080         struct wpabuf *req;
3081         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3082         u8 *len;
3083
3084         req = wpabuf_alloc(100);
3085         if (req == NULL)
3086                 return NULL;
3087
3088         if (duration1 || interval1) {
3089                 os_memset(&desc1, 0, sizeof(desc1));
3090                 desc1.count_type = 1;
3091                 desc1.duration = duration1;
3092                 desc1.interval = interval1;
3093                 ptr1 = &desc1;
3094
3095                 if (duration2 || interval2) {
3096                         os_memset(&desc2, 0, sizeof(desc2));
3097                         desc2.count_type = 2;
3098                         desc2.duration = duration2;
3099                         desc2.interval = interval2;
3100                         ptr2 = &desc2;
3101                 }
3102         }
3103
3104         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3105         len = p2p_buf_add_ie_hdr(req);
3106         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3107         p2p_buf_update_ie_hdr(req, len);
3108
3109         return req;
3110 }
3111
3112
3113 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3114                      const u8 *own_interface_addr, unsigned int freq,
3115                      u32 duration1, u32 interval1, u32 duration2,
3116                      u32 interval2)
3117 {
3118         struct wpabuf *req;
3119
3120         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3121                 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3122                 "int1=%u dur2=%u int2=%u",
3123                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3124                 freq, duration1, interval1, duration2, interval2);
3125
3126         req = p2p_build_presence_req(duration1, interval1, duration2,
3127                                      interval2);
3128         if (req == NULL)
3129                 return -1;
3130
3131         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3132         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3133                             go_interface_addr,
3134                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3135                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3136                         "P2P: Failed to send Action frame");
3137         }
3138         wpabuf_free(req);
3139
3140         return 0;
3141 }
3142
3143
3144 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3145                                                size_t noa_len, u8 dialog_token)
3146 {
3147         struct wpabuf *resp;
3148         u8 *len;
3149
3150         resp = wpabuf_alloc(100 + noa_len);
3151         if (resp == NULL)
3152                 return NULL;
3153
3154         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3155         len = p2p_buf_add_ie_hdr(resp);
3156         p2p_buf_add_status(resp, status);
3157         if (noa) {
3158                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3159                 wpabuf_put_le16(resp, noa_len);
3160                 wpabuf_put_data(resp, noa, noa_len);
3161         } else
3162                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3163         p2p_buf_update_ie_hdr(resp, len);
3164
3165         return resp;
3166 }
3167
3168
3169 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3170                                      const u8 *sa, const u8 *data, size_t len,
3171                                      int rx_freq)
3172 {
3173         struct p2p_message msg;
3174         u8 status;
3175         struct wpabuf *resp;
3176         size_t g;
3177         struct p2p_group *group = NULL;
3178         int parsed = 0;
3179         u8 noa[50];
3180         int noa_len;
3181
3182         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3183                 "P2P: Received P2P Action - P2P Presence Request");
3184
3185         for (g = 0; g < p2p->num_groups; g++) {
3186                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3187                               ETH_ALEN) == 0) {
3188                         group = p2p->groups[g];
3189                         break;
3190                 }
3191         }
3192         if (group == NULL) {
3193                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3194                         "P2P: Ignore P2P Presence Request for unknown group "
3195                         MACSTR, MAC2STR(da));
3196                 return;
3197         }
3198
3199         if (p2p_parse(data, len, &msg) < 0) {
3200                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3201                         "P2P: Failed to parse P2P Presence Request");
3202                 status = P2P_SC_FAIL_INVALID_PARAMS;
3203                 goto fail;
3204         }
3205         parsed = 1;
3206
3207         if (msg.noa == NULL) {
3208                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3209                         "P2P: No NoA attribute in P2P Presence Request");
3210                 status = P2P_SC_FAIL_INVALID_PARAMS;
3211                 goto fail;
3212         }
3213
3214         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3215
3216 fail:
3217         if (p2p->cfg->get_noa)
3218                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3219                                             sizeof(noa));
3220         else
3221                 noa_len = -1;
3222         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3223                                        noa_len > 0 ? noa_len : 0,
3224                                        msg.dialog_token);
3225         if (parsed)
3226                 p2p_parse_free(&msg);
3227         if (resp == NULL)
3228                 return;
3229
3230         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3231         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3232                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3233                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3234                         "P2P: Failed to send Action frame");
3235         }
3236         wpabuf_free(resp);
3237 }
3238
3239
3240 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3241                                       const u8 *sa, const u8 *data, size_t len)
3242 {
3243         struct p2p_message msg;
3244
3245         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3246                 "P2P: Received P2P Action - P2P Presence Response");
3247
3248         if (p2p_parse(data, len, &msg) < 0) {
3249                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3250                         "P2P: Failed to parse P2P Presence Response");
3251                 return;
3252         }
3253
3254         if (msg.status == NULL || msg.noa == NULL) {
3255                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3256                         "P2P: No Status or NoA attribute in P2P Presence "
3257                         "Response");
3258                 p2p_parse_free(&msg);
3259                 return;
3260         }
3261
3262         if (*msg.status) {
3263                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3264                         "P2P: P2P Presence Request was rejected: status %u",
3265                         *msg.status);
3266                 p2p_parse_free(&msg);
3267                 return;
3268         }
3269
3270         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3271                 "P2P: P2P Presence Request was accepted");
3272         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3273                     msg.noa, msg.noa_len);
3274         /* TODO: process NoA */
3275         p2p_parse_free(&msg);
3276 }
3277
3278
3279 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3280 {
3281         struct p2p_data *p2p = eloop_ctx;
3282
3283         if (p2p->ext_listen_interval) {
3284                 /* Schedule next extended listen timeout */
3285                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3286                                        p2p->ext_listen_interval_usec,
3287                                        p2p_ext_listen_timeout, p2p, NULL);
3288         }
3289
3290         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3291                 /*
3292                  * This should not really happen, but it looks like the Listen
3293                  * command may fail is something else (e.g., a scan) was
3294                  * running at an inconvenient time. As a workaround, allow new
3295                  * Extended Listen operation to be started.
3296                  */
3297                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3298                         "Extended Listen operation had not been completed - "
3299                         "try again");
3300                 p2p->ext_listen_only = 0;
3301                 p2p_set_state(p2p, P2P_IDLE);
3302         }
3303
3304         if (p2p->state != P2P_IDLE) {
3305                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3306                         "Listen timeout in active state (%s)",
3307                         p2p_state_txt(p2p->state));
3308                 return;
3309         }
3310
3311         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3312         p2p->ext_listen_only = 1;
3313         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3314                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3315                         "Listen state for Extended Listen Timing");
3316                 p2p->ext_listen_only = 0;
3317         }
3318 }
3319
3320
3321 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3322                    unsigned int interval)
3323 {
3324         if (period > 65535 || interval > 65535 || period > interval ||
3325             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3326                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3327                         "P2P: Invalid Extended Listen Timing request: "
3328                         "period=%u interval=%u", period, interval);
3329                 return -1;
3330         }
3331
3332         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3333
3334         if (interval == 0) {
3335                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3336                         "P2P: Disabling Extended Listen Timing");
3337                 p2p->ext_listen_period = 0;
3338                 p2p->ext_listen_interval = 0;
3339                 return 0;
3340         }
3341
3342         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3343                 "P2P: Enabling Extended Listen Timing: period %u msec, "
3344                 "interval %u msec", period, interval);
3345         p2p->ext_listen_period = period;
3346         p2p->ext_listen_interval = interval;
3347         p2p->ext_listen_interval_sec = interval / 1000;
3348         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3349
3350         eloop_register_timeout(p2p->ext_listen_interval_sec,
3351                                p2p->ext_listen_interval_usec,
3352                                p2p_ext_listen_timeout, p2p, NULL);
3353
3354         return 0;
3355 }
3356
3357
3358 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3359                       const u8 *ie, size_t ie_len)
3360 {
3361         struct p2p_message msg;
3362
3363         if (bssid == NULL || ie == NULL)
3364                 return;
3365
3366         os_memset(&msg, 0, sizeof(msg));
3367         if (p2p_parse_ies(ie, ie_len, &msg))
3368                 return;
3369         if (msg.minor_reason_code == NULL)
3370                 return;
3371
3372         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3373                 "P2P: Deauthentication notification BSSID " MACSTR
3374                 " reason_code=%u minor_reason_code=%u",
3375                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3376
3377         p2p_parse_free(&msg);
3378 }
3379
3380
3381 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3382                         const u8 *ie, size_t ie_len)
3383 {
3384         struct p2p_message msg;
3385
3386         if (bssid == NULL || ie == NULL)
3387                 return;
3388
3389         os_memset(&msg, 0, sizeof(msg));
3390         if (p2p_parse_ies(ie, ie_len, &msg))
3391                 return;
3392         if (msg.minor_reason_code == NULL)
3393                 return;
3394
3395         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3396                 "P2P: Disassociation notification BSSID " MACSTR
3397                 " reason_code=%u minor_reason_code=%u",
3398                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3399
3400         p2p_parse_free(&msg);
3401 }
3402
3403
3404 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3405 {
3406         if (enabled) {
3407                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3408                         "Device operations enabled");
3409                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3410         } else {
3411                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3412                         "Device operations disabled");
3413                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3414         }
3415 }
3416
3417
3418 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3419 {
3420         if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3421                 return -1;
3422
3423         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3424                 "reg_class %u channel %u", reg_class, channel);
3425         p2p->cfg->reg_class = reg_class;
3426         p2p->cfg->channel = channel;
3427
3428         return 0;
3429 }
3430
3431
3432 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3433 {
3434         wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3435         if (postfix == NULL) {
3436                 p2p->cfg->ssid_postfix_len = 0;
3437                 return 0;
3438         }
3439         if (len > sizeof(p2p->cfg->ssid_postfix))
3440                 return -1;
3441         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3442         p2p->cfg->ssid_postfix_len = len;
3443         return 0;
3444 }
3445
3446
3447 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3448                          int cfg_op_channel)
3449 {
3450         if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3451             < 0)
3452                 return -1;
3453
3454         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3455                 "reg_class %u channel %u", op_reg_class, op_channel);
3456         p2p->cfg->op_reg_class = op_reg_class;
3457         p2p->cfg->op_channel = op_channel;
3458         p2p->cfg->cfg_op_channel = cfg_op_channel;
3459         return 0;
3460 }
3461
3462
3463 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3464                            u8 *iface_addr)
3465 {
3466         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3467         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3468                 return -1;
3469         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3470         return 0;
3471 }
3472
3473
3474 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3475                            u8 *dev_addr)
3476 {
3477         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3478         if (dev == NULL)
3479                 return -1;
3480         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3481         return 0;
3482 }
3483
3484
3485 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3486 {
3487         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3488         if (is_zero_ether_addr(p2p->peer_filter))
3489                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3490                         "filter");
3491         else
3492                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3493                         "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3494 }
3495
3496
3497 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3498 {
3499         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3500                 enabled ? "enabled" : "disabled");
3501         if (p2p->cross_connect == enabled)
3502                 return;
3503         p2p->cross_connect = enabled;
3504         /* TODO: may need to tear down any action group where we are GO(?) */
3505 }
3506
3507
3508 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3509 {
3510         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3511         if (dev == NULL)
3512                 return -1;
3513         if (dev->oper_freq <= 0)
3514                 return -1;
3515         return dev->oper_freq;
3516 }
3517
3518
3519 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3520 {
3521         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3522                 enabled ? "enabled" : "disabled");
3523         p2p->cfg->p2p_intra_bss = enabled;
3524 }
3525
3526
3527 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3528 {
3529         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3530         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3531 }
3532
3533
3534 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3535                     const u8 *src, const u8 *bssid, const u8 *buf,
3536                     size_t len, unsigned int wait_time)
3537 {
3538         if (p2p->p2p_scan_running) {
3539                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3540                         "frame TX until p2p_scan completes");
3541                 if (p2p->after_scan_tx) {
3542                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3543                                 "previous pending Action frame TX");
3544                         os_free(p2p->after_scan_tx);
3545                 }
3546                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3547                                                len);
3548                 if (p2p->after_scan_tx == NULL)
3549                         return -1;
3550                 p2p->after_scan_tx->freq = freq;
3551                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3552                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3553                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3554                 p2p->after_scan_tx->len = len;
3555                 p2p->after_scan_tx->wait_time = wait_time;
3556                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3557                 return 0;
3558         }
3559
3560         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3561                                      buf, len, wait_time);
3562 }
3563
3564
3565 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3566                            int freq_overall)
3567 {
3568         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3569                 "  5 GHz: %d,  overall: %d", freq_24, freq_5, freq_overall);
3570         p2p->best_freq_24 = freq_24;
3571         p2p->best_freq_5 = freq_5;
3572         p2p->best_freq_overall = freq_overall;
3573 }
3574
3575
3576 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3577 {
3578         if (p2p == NULL || p2p->go_neg_peer == NULL)
3579                 return NULL;
3580         return p2p->go_neg_peer->info.p2p_device_addr;
3581 }
3582
3583
3584 const struct p2p_peer_info *
3585 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3586 {
3587         struct p2p_device *dev;
3588
3589         if (addr) {
3590                 dev = p2p_get_device(p2p, addr);
3591                 if (!dev)
3592                         return NULL;
3593
3594                 if (!next) {
3595                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3596                                 return NULL;
3597
3598                         return &dev->info;
3599                 } else {
3600                         do {
3601                                 dev = dl_list_first(&dev->list,
3602                                                     struct p2p_device,
3603                                                     list);
3604                                 if (&dev->list == &p2p->devices)
3605                                         return NULL;
3606                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3607                 }
3608         } else {
3609                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3610                 if (!dev)
3611                         return NULL;
3612                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3613                         dev = dl_list_first(&dev->list,
3614                                             struct p2p_device,
3615                                             list);
3616                         if (&dev->list == &p2p->devices)
3617                                 return NULL;
3618                 }
3619         }
3620
3621         return &dev->info;
3622 }